Name: efficient generation of pancreas/duodenum homeobox protein 1+ posterior foregut/pancreatic progenitors from hpscs in adhesion cultures
Uploaded: 2019-03-27T12:30:00
Description: Watch this Scientific Journal Video about Efficient Generation of Pancreas/Duodenum Homeobox Protein 1+ Posterior Foregut/Pancreatic Progenitors from hPSCs in Adhesion Cultures at JoVE.com

Dette arbeidet var støttes delvis av finansiering fra Japan Society for det fremme av vitenskap (JSPER) gjennom Scientific Research (C) (Javaserver KAKENHI Grant Number15K09385 og 18 K 08510) T.T. og Grant-in-Aid for stipendiater for JSP (Javaserver KAKENHI bevilgning nummer 17J07622) AK og Japan Direktoratet for medisinsk forskning og utvikling (AMED) gjennom sin forskning gi "Core Center for iPS forskning, Research Center nettverk for realisering av regenerativ medisin" K.O. Forfatterne takker Dr. Peter Karagiannis for å lese manuskriptet.

Eksperimenter ved hjelp av hPSCs ble godkjent av den etiske komiteen av Institutt for indremedisin og Graduate School of Medicine, Kyoto University.
1. forberedelse av materialer
Merk: Forberede all media og reagenser cellekultur i et sterilt miljø. Varm opp base kultur medier til romtemperatur (RT) før bruk. Medium for differensiering brukes innen 6 h RT. detaljer om reagenser er oppført i Tabellen for materiale.<...

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	<li>D'Amour, K. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Production+of+pancreatic+hormone-expressing+endocrine+cells+from+human+embryonic+stem+cells.">Production of pancreatic hormone-expressing endocrine cells from human embryonic stem cells.</a> Nature Biotechnology. 24 (11), 1392-1401 (2006).</li><li>Pagliuca, F. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Generation+of+functional+human+pancreatic+beta+cells+in+vitro.">Generation of functional human pancreatic beta cells in vitro.</a> Cell. 159 (2), 428-439 (2014).</li><li>Rezania, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Reversal+of+diabetes+with+insulin-producing+cells+derived+in+vitro+from+human+pluripotent+stem+cells.">Reversal of diabetes with insulin-producing cells derived in vitro from human pluripotent stem cells.</a> Nature Biotechnology. 32 (11), 1121-1133 (2014).</li><li>Kondo, Y., Toyoda, T., Inagaki, N., Osafune, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=iPSC+technology-based+regenerative+therapy+for+diabetes.">iPSC technology-based regenerative therapy for diabetes.</a> Journal of Diabetes Investigation. 9 (2), 234-243 (2017).</li><li>Millman, J. R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Generation+of+stem+cell-derived+beta-cells+from+patients+with+type+1+diabetes.">Generation of stem cell-derived beta-cells from patients with type 1 diabetes.</a> Nature Communications. 7, 11463 (2016).</li><li>Zeng, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=An+Isogenic+Human+ESC+Platform+for+Functional+Evaluation+of+Genome-wide-Association-Study-Identified+Diabetes+Genes+and+Drug+Discovery.">An Isogenic Human ESC Platform for Functional Evaluation of Genome-wide-Association-Study-Identified Diabetes Genes and Drug Discovery.</a> Cell Stem Cell. 19 (3), 326-340 (2016).</li><li>Hosokawa, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Insulin-producing+cells+derived+from+'induced+pluripotent+stem+cells'+of+patients+with+fulminant+type+1+diabetes:+Vulnerability+to+cytokine+insults+and+increased+expression+of+apoptosis-related+genes.">Insulin-producing cells derived from 'induced pluripotent stem cells' of patients with fulminant type 1 diabetes: Vulnerability to cytokine insults and increased expression of apoptosis-related genes.</a> Journal of Diabetes Investigation. , (2017).</li><li>Jennings, R. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Development+of+the+human+pancreas+from+foregut+to+endocrine+commitment.">Development of the human pancreas from foregut to endocrine commitment.</a> Diabetes. 62 (10), 3514-3522 (2013).</li><li>Jorgensen, M. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=An+illustrated+review+of+early+pancreas+development+in+the+mouse.">An illustrated review of early pancreas development in the mouse.</a> Endocrine Reviews. 28 (6), 685-705 (2007).</li><li>Jensen, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gene+regulatory+factors+in+pancreatic+development.">Gene regulatory factors in pancreatic development.</a> Developmental Dynamics. 229 (1), 176-200 (2004).</li><li>Hald, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Generation+and+characterization+of+Ptf1a+antiserum+and+localization+of+Ptf1a+in+relation+to+Nkx6.1+and+Pdx1+during+the+earliest+stages+of+mouse+pancreas+development.">Generation and characterization of Ptf1a antiserum and localization of Ptf1a in relation to Nkx6.1 and Pdx1 during the earliest stages of mouse pancreas development.</a> Journal of Histochemistry and Cytochemistry. 56 (6), 587-595 (2008).</li><li>Villasenor, A., Chong, D. C., Henkemeyer, M., Cleaver, O. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Epithelial+dynamics+of+pancreatic+branching+morphogenesis.">Epithelial dynamics of pancreatic branching morphogenesis.</a> Development. 137 (24), 4295-4305 (2010).</li><li>Serup, P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+homeodomain+protein+IPF-1/STF-1+is+expressed+in+a+subset+of+islet+cells+and+promotes+rat+insulin+1+gene+expression+dependent+on+an+intact+E1+helix-loop-helix+factor+binding+site.">The homeodomain protein IPF-1/STF-1 is expressed in a subset of islet cells and promotes rat insulin 1 gene expression dependent on an intact E1 helix-loop-helix factor binding site.</a> Biochemical Journal. 310 (Pt 3), 997-1003 (1995).</li><li>Riedel, M. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Immunohistochemical+characterisation+of+cells+co-producing+insulin+and+glucagon+in+the+developing+human+pancreas.">Immunohistochemical characterisation of cells co-producing insulin and glucagon in the developing human pancreas.</a> Diabetologia. 55 (2), 372-381 (2012).</li><li>Mae, S. I., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Monitoring+and+robust+induction+of+nephrogenic+intermediate+mesoderm+from+human+pluripotent+stem+cells.">Monitoring and robust induction of nephrogenic intermediate mesoderm from human pluripotent stem cells.</a> Nature Communications. 4, 1367 (2013).</li><li>Toyoda, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cell+aggregation+optimizes+the+differentiation+of+human+ESCs+and+iPSCs+into+pancreatic+bud-like+progenitor+cells.">Cell aggregation optimizes the differentiation of human ESCs and iPSCs into pancreatic bud-like progenitor cells.</a> Stem Cell Research. 14 (2), 185-197 (2015).</li><li>Toyoda, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Rho-Associated+Kinases+and+Non-muscle+Myosin+IIs+Inhibit+the+Differentiation+of+Human+iPSCs+to+Pancreatic+Endoderm.">Rho-Associated Kinases and Non-muscle Myosin IIs Inhibit the Differentiation of Human iPSCs to Pancreatic Endoderm.</a> Stem Cell Reports. 9 (2), 419-428 (2017).</li><li>Chen, K. G., Mallon, B. S., McKay, R. D., Robey, P. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+pluripotent+stem+cell+culture:+considerations+for+maintenance,+expansion,+and+therapeutics.">Human pluripotent stem cell culture: considerations for maintenance, expansion, and therapeutics.</a> Cell Stem Cell. 14 (1), 13-26 (2014).</li><li>Bauwens, C. L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Control+of+human+embryonic+stem+cell+colony+and+aggregate+size+heterogeneity+influences+differentiation+trajectories.">Control of human embryonic stem cell colony and aggregate size heterogeneity influences differentiation trajectories.</a> Stem Cells. 26 (9), 2300-2310 (2008).</li><li>Nguyen, Q. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Single-cell+RNA-seq+of+human+induced+pluripotent+stem+cells+reveals+cellular+heterogeneity+and+cell+state+transitions+between+subpopulations.">Single-cell RNA-seq of human induced pluripotent stem cells reveals cellular heterogeneity and cell state transitions between subpopulations.</a> Genome Research. 28 (7), 1053-1066 (2018).</li><li>Narsinh, K. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Single+cell+transcriptional+profiling+reveals+heterogeneity+of+human+induced+pluripotent+stem+cells.">Single cell transcriptional profiling reveals heterogeneity of human induced pluripotent stem cells.</a> Journal of Clinical Investigation. 121 (3), 1217-1221 (2011).</li><li>Rosowski, K. A., Mertz, A. F., Norcross, S., Dufresne, E. R., Horsley, V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Edges+of+human+embryonic+stem+cell+colonies+display+distinct+mechanical+properties+and+differentiation+potential.">Edges of human embryonic stem cell colonies display distinct mechanical properties and differentiation potential.</a> Scientific Reports. 5, 14218 (2015).</li><li>Torres-Padilla, M. E., Chambers, I. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transcription+factor+heterogeneity+in+pluripotent+stem+cells:+a+stochastic+advantage.">Transcription factor heterogeneity in pluripotent stem cells: a stochastic advantage.</a> Development. 141 (11), 2173-2181 (2014).</li><li>Cahan, P., Daley, G. Q. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Origins+and+implications+of+pluripotent+stem+cell+variability+and+heterogeneity.">Origins and implications of pluripotent stem cell variability and heterogeneity.</a> Nature Reviews Molecular and Cell Biology. 14 (6), 357-368 (2013).</li><li>Chetty, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+simple+tool+to+improve+pluripotent+stem+cell+differentiation.">A simple tool to improve pluripotent stem cell differentiation.</a> Nature Methods. 10 (6), 553-556 (2013).</li><li>Kimura, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Small+molecule+AT7867+proliferates+PDX1-expressing+pancreatic+progenitor+cells+derived+from+human+pluripotent+stem+cells.">Small molecule AT7867 proliferates PDX1-expressing pancreatic progenitor cells derived from human pluripotent stem cells.</a> Stem Cell Research. 24, 61-68 (2017).</li><li>Bhattacharya, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=High+efficiency+differentiation+of+human+pluripotent+stem+cells+to+cardiomyocytes+and+characterization+by+flow+cytometry.">High efficiency differentiation of human pluripotent stem cells to cardiomyocytes and characterization by flow cytometry.</a> Journal of Visualized Experiments. (91), e52010 (2014).</li><li>Honvo-Houeto, E., Truchet, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Indirect+Immunofluorescence+on+Frozen+Sections+of+Mouse+Mammary+Gland.">Indirect Immunofluorescence on Frozen Sections of Mouse Mammary Gland.</a> Journal of Visualized Experiments. (106), (2015).</li><li>Okita, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+more+efficient+method+to+generate+integration-free+human+iPS+cells.">A more efficient method to generate integration-free human iPS cells.</a> Nature Methods. 8 (5), 409-412 (2011).</li><li>Kajiwara, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Donor-dependent+variations+in+hepatic+differentiation+from+human-induced+pluripotent+stem+cells.">Donor-dependent variations in hepatic differentiation from human-induced pluripotent stem cells.</a> Proceedings of the National Academy of Science U S A. 109 (31), 12538-12543 (2012).</li><li>Kikuchi, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+iPS+cell-derived+dopaminergic+neurons+function+in+a+primate+Parkinson's+disease+model.">Human iPS cell-derived dopaminergic neurons function in a primate Parkinson's disease model.</a> Nature. 548 (7669), 592-596 (2017).</li><li>Suemori, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+establishment+of+human+embryonic+stem+cell+lines+and+long-term+maintenance+with+stable+karyotype+by+enzymatic+bulk+passage.">Efficient establishment of human embryonic stem cell lines and long-term maintenance with stable karyotype by enzymatic bulk passage.</a> Biochemical and Biophysical Research Communication. 345 (3), 926-932 (2006).</li><li>Gage, B. K., Webber, T. D., Kieffer, T. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Initial+cell+seeding+density+influences+pancreatic+endocrine+development+during+in+vitro+differentiation+of+human+embryonic+stem+cells.">Initial cell seeding density influences pancreatic endocrine development during in vitro differentiation of human embryonic stem cells.</a> PLoS One. 8 (12), e82076 (2013).</li><li>Nostro, M. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+generation+of+NKX6-1++pancreatic+progenitors+from+multiple+human+pluripotent+stem+cell+lines.">Efficient generation of NKX6-1+ pancreatic progenitors from multiple human pluripotent stem cell lines.</a> Stem Cell Reports. 4 (4), 591-604 (2015).</li><li>Jonsson, J., Carlsson, L., Edlund, T., Edlund, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Insulin-promoter-factor+1+is+required+for+pancreas+development+in+mice.">Insulin-promoter-factor 1 is required for pancreas development in mice.</a> Nature. 371 (6498), 606-609 (1994).</li><li>Kelly, O. G., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cell-surface+markers+for+the+isolation+of+pancreatic+cell+types+derived+from+human+embryonic+stem+cells.">Cell-surface markers for the isolation of pancreatic cell types derived from human embryonic stem cells.</a> Nature Biotechnology. 29 (8), 750-756 (2011).</li><li>Hohwieler, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+pluripotent+stem+cell-derived+acinar/ductal+organoids+generate+human+pancreas+upon+orthotopic+transplantation+and+allow+disease+modelling.">Human pluripotent stem cell-derived acinar/ductal organoids generate human pancreas upon orthotopic transplantation and allow disease modelling.</a> Gut. 66 (3), 473-486 (2017).</li><li>Takeuchi, H., Nakatsuji, N., Suemori, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Endodermal+differentiation+of+human+pluripotent+stem+cells+to+insulin-producing+cells+in+3D+culture.">Endodermal differentiation of human pluripotent stem cells to insulin-producing cells in 3D culture.</a> Scientific Reports. 4, 4488 (2014).</li></ol>

Generering av PDX1+ celler består av flere trinn; Derfor er det avgjørende å behandle celler på riktig tidspunkt. Blant trinnene, induksjon effektiviteten definitive endoderm i stor grad påvirker siste induksjon effektiviteten, muligens av interferens fra andre forurensende avstamning celler (dvs. mesoderm og ektoderm), som kan spre og/eller skiller faktorer som forstyrre bestemt differensiering. Hvis andelen SOX17+ celler er lavere enn 80% på dag 4 (trinn 1B), en effektiv induksjon til PDX1<s...

Bukspyttkjertelen består hovedsakelig av exocrine og endokrine celler, og dens dysfunksjon eller overbelastning fører flere sykdommer, for eksempel pankreatitt, diabetes og kreft i bukspyttkjertelen. For å klargjøre pathogeny av pancreatopathy, er det nødvendig å analysere utviklingsprosess og funksjon av bukspyttkjertelen celler. I tillegg er en stabil celle forsyning med robuste kvalitet nødvendig å etablere cellen/vev kosttilskudd terapi. Menneskelige pluripotent stilk cellen (hPSC)-avledede bukspyttkjertelen celler er en lovende celle-kilde til disse formålene, og differensiering protokollen mot bukspyttkjertelen celler har vært intenst studerte1,2,3, 4. Nylige fremskritt i bukspyttkjertelen β celler i vitro generasjon etterligne generering av β celler i voksen menneskelige og disse cellene Vis terapeutiske effekten på implantasjon i diabetiker modell mus2,3. I tillegg avdekket analyse av β celler generert fra indusert pluripotent stamceller (iPSCs) av sunn og type 1 diabetes pasient givere ingen funksjonell forskjell inkludert når under stress5. Videre har sykdom fenotyper blitt delvis gjengitt i indusert bukspyttkjertelen celler med pasient-avledede iPSCs eller hPSCs skjuler genetiske mutasjoner i samme område som pasienter6,7.
Vil generere bukspyttkjertelen celler fra hPSCs, brukes gradvis rettet differensiering som viser utviklingsprosesser. Bukspyttkjertelen er avledet fra endoderm laget av tidlig embryoet, som uttrykker sex bestemme regionen Y-boksen 17 (SOX17) og forkhead for A2 (FOXA2)8. Basert på undersøkelsene vi musen, danner det endodermal laget primitive gut røret, som er preget av uttrykk for hepatocyte kjernefysiske faktor 1-beta (Hnf1β) og hepatocyte kjernefysiske faktor 4-alpha (Hnf4α). Den primitive gut elongates og utvikler i luftveiene apparater, fordøyelseskanal og organer. Etter elongation, bakre foregut området blir presumptive bukspyttkjertelen regionen, som preget av uttrykk for transcriptional faktor bukspyttkjertelen/tolvfingertarmen homeobox protein 1 (PDX1)8,9,10. Rygg- og ventrale deler av PDX1+ gut tube tykne til skjemaet bukspyttkjertelen knopper, som er preget av co uttrykk for bukspyttkjertelen transkripsjon faktor 1 delenhet alpha (PTF1A) og NK6 homeobox 1 (NKX6.1)8,11. Denne uttrykket markerer morfologiske starten av bukspyttkjertelen organogenesen. Bukspyttkjertelen endoderm celler, som er komponenter av bukspyttkjertelen knopper, danner et forgrenet rørformede nettverk epithelial strukturer12 og til slutt skille ut exocrine og endokrine cellene, inkludert insulin sekresjon β-celler og glukagon-sekresjon α-celler. Uttrykk for PDX1 er oppdaget først på presumptive bukspyttkjertelen regionen, som deretter observeres under hele bukspyttkjertelen utviklingen, og viser lokaliseringen å β - og ses-celler9,13,14. Selv om Pdx1+ celle området som ikke uttrykker Ptf1a eller Nkx6.1 skiller den gastriske antrum, tolvfingertarmen, extrahepatic galle duct og noen intestinal celler på midten sent Stadium i utviklingen i mus9PDX1+ celler anses progenitors av bukspyttkjertelen på det tidlige utviklingen scenen hos mennesker.
Her presenterer vi en detaljert protokoll for å skille hPSCs i PDX1+ celler for generering av bukspyttkjertelen overleveringslinjer. Protokollen starter differensiering av seeding dissosiert enkeltceller15,16,17. Vanligvis vedlikeholdes udifferensierte hPSCs som kolonier eller cellen aggregater i suspensjon eller vedheft. Som et resultat, starte de fleste protokollene differensiering etter passaging. Men i delstaten colonies eller aggregater, celler er utsatt for romlige og transcriptional heterogeneities18,19,20,21,22, som kan hemme den første differensiering skritt mot definitive endoderm etterfulgt av ineffektiv differensiering til PDX1+ celler. Nåværende protokollen kan tilby enkel håndtering for å forbedre og stabilisere differensiering effektiviteten av noen hPSC linjer som tidligere ble funnet for å skille ineffektivt å endodermal linjene og PDX1+ celler23, 24 , 25.

<table border="0" cellpadding="0" cellspacing="0" style="width:617px;" width="616">
	<tbody>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">3-Keto-N-aminoethyl-N&#8242;-aminocaproyldihydrocinnamoyl cyclopamine</td>
			<td style="width:100px;">Toronto Research Chemicals</td>
			<td style="width:123px;">K171000</td>
			<td style="width:172px;">CYC</td>
		</tr>
		<tr height="84">
			<td height="84" style="height:84px;width:223px;">4-[(E)-2-(5,6,7,8-Tetrahydro-5,5,8,8-tetramethyl-2-naphthalenyl)-1-propenyl]-benzoic acid</td>
			<td style="width:100px;">Santa Cruz Biotechnology</td>
			<td style="width:123px;">SC-203303</td>
			<td style="width:172px;">TTNPB</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">50 mL Conical Sterile Polypropylene Centrifuge Tubes</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;">339652</td>
			<td style="width:172px;"></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Anti-CDX2 antibody [EPR2764Y]</td>
			<td style="width:100px;">Abcam</td>
			<td style="width:123px;">Ab76541</td>
			<td style="width:172px;">Anti-CDX2, &#215; 1/1000 dilution</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">B-27 Supplement (50 &#215;)</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;">17504-044</td>
			<td style="width:172px;">Serum-free supplement</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">BD FACSAria II Cell Sorter</td>
			<td style="width:100px;">BD Biosciences</td>
			<td style="width:123px;"></td>
			<td style="width:172px;">For flow cytometry</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Biomedical freezer</td>
			<td style="width:100px;">SANYO</td>
			<td style="width:123px;">MDF-U538</td>
			<td>For -30 &#176;C storing</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">Cell Counting Slides for TC10/TC20 Cell Counter, Dual-Chamber</td>
			<td style="width:100px;">BIO-RAD</td>
			<td style="width:123px;">1450011</td>
			<td style="width:172px;">Counting slide glass</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">CELL CULTURE MULTIWELL PLATE, 6 WELL, PS, CLEAR</td>
			<td style="width:100px;">Greiner bio-one</td>
			<td style="width:123px;">657165</td>
			<td style="width:172px;">For differentiation culture/6-well plate</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Centrifuge</td>
			<td style="width:100px;">TOMY</td>
			<td style="width:123px;">AX-310</td>
			<td style="width:172px;">For cell culturing</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Centrifuge</td>
			<td style="width:100px;">TOMY</td>
			<td style="width:123px;">MX-305</td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">CHIR99021</td>
			<td style="width:100px;">Axon Medchem</td>
			<td style="width:123px;">Axon 1386</td>
			<td style="width:172px;"></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">CLEAN BENCH</td>
			<td style="width:100px;">SHOWA KAGAKU&#160;</td>
			<td style="width:123px;">S-1601PRV</td>
			<td style="width:172px;">Clean bench</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Corning CellBIND 6-well plate</td>
			<td style="width:100px;">Corning</td>
			<td style="width:123px;">3335</td>
			<td style="width:172px;">For feeder-free culture of hPSCs/6-well plate</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">Corning Matrigel Basement Membrane Matrix Growth Factor Reduced</td>
			<td style="width:100px;">Corning</td>
			<td style="width:123px;">354230</td>
			<td style="width:172px;">Basement membrane matrix</td>
		</tr>
		<tr height="84">
			<td height="84" style="height:84px;width:223px;">Corning Synthemax II-SC Substrate</td>
			<td style="width:100px;">Corning</td>
			<td style="width:123px;">3535</td>
			<td style="width:172px;">For feeder-free culture of hPSCs/synthetic surface material for hPSCs</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Cryostat</td>
			<td style="width:100px;">Leica</td>
			<td style="width:123px;">Leica CM1510 S</td>
			<td style="width:172px;">For immunostaining of aggregates.</td>
		</tr>
		<tr height="126">
			<td height="126" style="height:126px;width:223px;">Cytofix/Cytoperm Kit</td>
			<td style="width:100px;">Becton Dickinson</td>
			<td style="width:123px;">554714</td>
			<td style="width:172px;">Perm/Wash buffer is&#160; Permeabilization/Wash buffer. Cytofix/Cytoperm buffer is fixation and permeabilization buffer.</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Dako pen</td>
			<td style="width:100px;">Dako</td>
			<td style="width:123px;">S2002</td>
			<td style="width:172px;">For immunostaining of aggregates</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">dNTP mix (10 mM)</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td>18427-088</td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">Donkey anti-Goat IgG (H+L) Cross-Adsorbed Secondary Antibody, Alexa Fluor 488</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;">A11055</td>
			<td style="width:172px;">Secondary antibody, &#215; 1/500 dilution</td>
		</tr>
		<tr height="84">
			<td height="84" style="height:84px;width:223px;">Donkey anti-Mouse IgG (H+L) Highly Cross-Adsorbed Secondary Antibody, Alexa Fluor 546</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;">A10036</td>
			<td style="width:172px;">Secondary antibody, &#215; 1/500 dilution</td>
		</tr>
		<tr height="84">
			<td height="84" style="height:84px;width:223px;">Donkey anti-Rabbit IgG (H+L) Highly Cross-Adsorbed Secondary Antibody, Alexa Fluor 546</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;">A10040</td>
			<td style="width:172px;">Secondary antibody, &#215; 1/500 dilution</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Donkey Serum</td>
			<td style="width:100px;">Merck Millipore</td>
			<td style="width:123px;">S30</td>
			<td style="width:172px;">Donkey serum</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">D-PBS(-) without Ca or Mg</td>
			<td style="width:100px;">Nacalai tesque</td>
			<td style="width:123px;">14249-95</td>
			<td style="width:172px;">DPBS</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">Essential 8 Medium</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;">A1517001</td>
			<td style="width:172px;">For feeder-free culture of hPSCs/hPSC maintenance medium</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">Falcon 5mL Round Bottom Polystyrene Test Tube, with Cell Strainer Snap Cap</td>
			<td style="width:100px;">Corning</td>
			<td style="width:123px;">352235</td>
			<td style="width:172px;">5 mL round bottom polystyrene tube with cell strainer</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Filter Tip, 1000 &#181;L</td>
			<td style="width:100px;">Watoson</td>
			<td style="width:123px;">124-1000S</td>
			<td style="width:172px;">Use together with pipettes</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Filter Tip, 20 &#181;L</td>
			<td style="width:100px;">Watoson</td>
			<td style="width:123px;">124-P20S</td>
			<td style="width:172px;">Use together with pipettes</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Filter Tip, 200 &#181;L</td>
			<td style="width:100px;">Watoson</td>
			<td style="width:123px;">124-P200S</td>
			<td style="width:172px;">Use together with pipettes</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Fluorescence Microscope</td>
			<td style="width:100px;">Keyence</td>
			<td style="width:123px;">BZ-X700</td>
			<td style="width:172px;">For immunostaining</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">Forma Steri-Cycle CO2 incubator</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;">370A</td>
			<td style="width:172px;">Incubator</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">HNF-1&#946; Antibody (C-20)</td>
			<td style="width:100px;">Santa Cruz Biotechnology</td>
			<td style="width:123px;">sc-7411</td>
			<td style="width:172px;">Anti-HNF1&#946;, &#215; 1/200 dilution</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">HNF-4&#945; Antibody (H-171)</td>
			<td style="width:100px;">Santa Cruz Biotechnology</td>
			<td style="width:123px;">sc-8987</td>
			<td style="width:172px;">Anti-HNF4&#945;, &#215; 1/200 dilution</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">Hoechst 33342</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;">H3570</td>
			<td style="width:172px;">For nucleus staining, &#215; 1/200 dilution</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Human Pancreas Total RNA</td>
			<td style="width:100px;">Ambion</td>
			<td style="width:123px;">AM7954</td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Human PDX-1/IPF1 Antibody</td>
			<td style="width:100px;">R&#38;D Systems</td>
			<td style="width:123px;">AF2419</td>
			<td style="width:172px;">Anti-PDX1, goat IgG, &#215; 1/200 dilution</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Human SOX17 Antibody</td>
			<td style="width:100px;">R&#38;D Systems</td>
			<td style="width:123px;">AF1924</td>
			<td style="width:172px;">Anti-SOX17, &#215; 1/200 dilution</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">Improved MEM Zinc Option medium</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;">10373-017</td>
			<td style="width:172px;">iMEM</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Incubation chamber</td>
			<td style="width:100px;">Cosmo Bio</td>
			<td style="width:123px;">10DO</td>
			<td style="width:172px;">For immunostaining of aggregates</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Latex Examination Gloves</td>
			<td style="width:100px;">Adachi</td>
			<td style="width:123px;"></td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">MAS coated slide glass</td>
			<td style="width:100px;">Matsunami Glass</td>
			<td>83-1881</td>
			<td style="width:172px;">For immunostaining of aggregates</td>
		</tr>
		<tr height="84">
			<td height="84" style="height:84px;width:223px;">MicroAmp Fast 96-well Reaction Plate</td>
			<td style="width:100px;">Applied Biosystems/Thermo Fisher Scientific</td>
			<td style="width:123px;">4346907</td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Microscope</td>
			<td style="width:100px;">Olympus</td>
			<td style="width:123px;">CKX41N-31PHP</td>
			<td style="width:172px;">For cell culturing</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Microtube</td>
			<td style="width:100px;">Watoson</td>
			<td style="width:123px;">131-515CS</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Monoclonal Anti-&#945;-Fetoprotein</td>
			<td style="width:100px;">SIGMA</td>
			<td style="width:123px;">A8452</td>
			<td style="width:172px;">Anti-AFP, &#215; 1/200 dilution</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">Nanodeop 8000</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;"></td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="84">
			<td height="84" style="height:84px;">Oligo dT</td>
			<td style="width:100px;">FASMAC</td>
			<td style="width:123px;">Custom made Oligo&#160;</td>
			<td style="width:172px;">For RT-qPCR of sequence is &#34;TTTTTTTTTTTTTTTTTTTT&#34;</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Paraformaldehyde, powder</td>
			<td style="width:100px;">Nacalai tesque</td>
			<td style="width:123px;">26126-54</td>
			<td style="width:172px;">PFA, fixative, diluted in DPBS</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Pharmaceutical refrigerator</td>
			<td style="width:100px;">SANYO</td>
			<td style="width:123px;">MPR-514</td>
			<td>For 4 &#176;C storing</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">PIPETMAN P&#160;</td>
			<td style="width:100px;">GILSON</td>
			<td style="width:123px;"></td>
			<td style="width:172px;">Pipette</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Recombinant Human KGF/FGF-7</td>
			<td style="width:100px;">R&#38;D Systems</td>
			<td style="width:123px;">251-KG</td>
			<td style="width:172px;">KGF</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Recombinant Human Noggin</td>
			<td style="width:100px;">PeproTech</td>
			<td style="width:123px;">120-10C</td>
			<td style="width:172px;">NOGGIN</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Recombinant Human/Mouse/Rat Activin A</td>
			<td style="width:100px;">R&#38;D Systems</td>
			<td style="width:123px;">338-AC</td>
			<td style="width:172px;">Activin A</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">ReverTra Ace (100 U/&#956;L)</td>
			<td style="width:100px;">TOYOBO</td>
			<td style="width:123px;">TRT-101</td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Rnase-Free Dnase Set (50)</td>
			<td style="width:100px;">QIAGEN</td>
			<td style="width:123px;">79254</td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Rneasy Mini Kit</td>
			<td style="width:100px;">QIAGEN</td>
			<td style="width:123px;">74104</td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">RPMI 1640 with L-Gln</td>
			<td style="width:100px;">Nacalai tesque</td>
			<td style="width:123px;">30264-85</td>
			<td style="width:172px;">RPMI 1640</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">Sealing Film for Real Time</td>
			<td style="width:100px;">Takara</td>
			<td style="width:123px;">NJ500</td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;">Serological pipettes 10 mL</td>
			<td style="width:100px;">Costar/Corning</td>
			<td style="width:123px;">4488</td>
			<td style="width:172px;">For cell culturing</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;">Serological pipettes 25 mL</td>
			<td style="width:100px;">Costar/Corning</td>
			<td>4489</td>
			<td style="width:172px;">For cell culturing</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;">Serological pipettes 5 mL</td>
			<td style="width:100px;">Costar/Corning</td>
			<td style="width:123px;">4487</td>
			<td style="width:172px;">For cell culturing</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Sox2 (D6D9) XP Rabbit mAb</td>
			<td style="width:100px;">Cell signaling</td>
			<td style="width:123px;">3579S</td>
			<td style="width:172px;">Anti-SOX2, &#215; 1/200 dilution</td>
		</tr>
		<tr height="84">
			<td height="84" style="height:84px;width:223px;">StepOnePlus</td>
			<td style="width:100px;">Applied Biosystems/Thermo Fisher Scientific</td>
			<td style="width:123px;"></td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Sucrose</td>
			<td style="width:100px;">Nacalai tesque</td>
			<td>30406-25</td>
			<td style="width:172px;">For immunostaining of aggregates</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">TB Green 
			Premix Ex Taq II&#160;</td>
			<td style="width:100px;">Takara</td>
			<td>RR820B</td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">TC20 Automated Cell Counter</td>
			<td style="width:100px;">BIO-RAD</td>
			<td style="width:123px;">1450101J1</td>
			<td style="width:172px;">Automatic cell counter</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Tissue-Tek OCT compound 4583&#160;</td>
			<td style="width:100px;">Sakura Finetechnical</td>
			<td>4583</td>
			<td style="width:172px;">For immunostaining of aggregates</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Tissue-Tek Cryomold Molds/Adapters</td>
			<td style="width:100px;">Sakura Finetechnical</td>
			<td>4566</td>
			<td style="width:172px;">For immunostaining of aggregates</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:223px;">Triton X-100</td>
			<td style="width:100px;">Nacalai tesque</td>
			<td style="width:123px;">35501-15</td>
			<td style="width:172px;"></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Trypan Blue</td>
			<td style="width:100px;">BIO-RAD</td>
			<td style="width:123px;">1450021</td>
			<td style="width:172px;"></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Ultracold freezer</td>
			<td style="width:100px;">SANYO</td>
			<td style="width:123px;">MDF-U33V</td>
			<td>For -80 &#176;C storing</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:223px;">UltraPure 0.5M EDTA, pH 8.0</td>
			<td style="width:100px;">Thermo Fisher Scientific</td>
			<td style="width:123px;">15575-038</td>
			<td style="width:172px;">Dilute with DPBS to prepare 0.5 mM EDTA</td>
		</tr>
		<tr height="84">
			<td height="84" style="height:84px;width:223px;">Veriti Thermal Cycler</td>
			<td style="width:100px;">Applied Biosystems/Thermo Fisher Scientific</td>
			<td style="width:123px;"></td>
			<td style="width:172px;">For RT-qPCR</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:223px;">Y-27632</td>
			<td style="width:100px;">Wako</td>
			<td style="width:123px;">251-00514</td>
			<td style="width:172px;"></td>
		</tr>
	</tbody>
</table>

efficient generation of pancreas/duodenum homeobox protein 1+ posterior foregut/pancreatic progenitors from hpscs in adhesion cultures

Menneskelige pluripotent stilk cellen (hPSC)-avledede bukspyttkjertelen celler er en lovende celle kilde for regenerativ medisin og en plattform å studere human utviklingsprosesser. Trinnvis rettet differensiering som viser utviklingsprosesser er en av de viktigste måtene å generere bukspyttkjertelen celler inkludert bukspyttkjertelen/tolvfingertarmen homeobox protein 1+ (PDX1+) bukspyttkjertelen progenitor celler. Konvensjonelle protokoller starte differensiering med små kolonier kort tid etter passering. Men i delstaten colonies eller aggregater, celler er utsatt for heterogeneities, som kan hemme differensiering å PDX1+ celler. Her presenterer vi en detaljert protokoll for å skille hPSCs i PDX1+ celler. Protokollen består av fire trinnene og starter differensiering av seeding dissosiert enkeltceller. Induksjon av SOX17+ definitive endoderm celler ble etterfulgt av uttrykk for to primitive gut tube markører, HNF1β og HNF4α og eventuell differensiering inn PDX1+ celler. Nåværende protokollen gir enkel håndtering og kan forbedre og stabilisere differensiering effektiviteten av noen hPSC linjer som tidligere ble funnet for å skille ineffektivt endodermal linjene eller PDX1+ celler.

Overfører hiPSCs (585A129,30) er kondensert og danner en homogen monolayer (figur 1B) som passer for differensiering. Udifferensierte hiPSCs (scenen 0) er atskilt og re seeded som enkeltceller på lav celle tettheter (1-1,5 x 105 celler/cm2). Innen 1 h, cellene er knyttet til plate og begynne å vise protrusion. På dag 1, er cellene proliferated og godt fordelt for å dekke 80-90% av arealet. Under trinn 1B vi...

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Efficient Generation of Pancreas/Duodenum Homeobox Protein 1+ Posterior Foregut/Pancreatic Progenitors from hPSCs in Adhesion Cultures

Her presenterer vi en detaljert protokoll for å skille menneskelig pluripotent stamceller (hPSCs) i bukspyttkjertelen/tolvfingertarmen homeobox protein 1+ (PDX1+) celler for generering av bukspyttkjertelen overleveringslinjer basert på ikke-kolonien type monolayer av dissosiert enkeltceller. Denne metoden er egnet for produksjon av homogene hPSC-avledet celler, genetisk manipulasjon og screening.

Effektiv generasjon av bukspyttkjertelen/tolvfingertarmen Homeobox Protein 1+ bakre Foregut/Pancreatic Progenitors fra hPSCs i vedheft kulturer

Human pluripotent stem cell (hPSC)-derived pancreatic cells are a promising cell source for regenerative medicine and a platform to study human ...

Den største fordelen med denne teknikken er at før stimulering, blir cellene spredt jevnt og deretter stimulert jevnt i tandemcelle vedheft. Å demonstrere prosedyren vil være Azuma Kimura, en utdannet student fra laboratoriet vårt. For å starte denne prosedyren, overfør seks milliliter RPMI 1640 til et rør avkjølt til fire grader Celsius på is.Ved hjelp av avkjølte en milliliter pipette tips, tilsett to milligram kjeller membran matrise. Bland godt ved skånsom pipettering for å gjøre den til en kjellermembranmatrise med en konsentrasjon på 0,33 milligram per milliliter. Deretter bruker du en pipette til å overføre to milliliter av den fortynnede kjellermembranmatrisen til hver brønn av en seksbrønns cellekulturplate.Inkuber platen ved 37 grader Celsius i 60 til 90 minutter. Etter dette, hold platen ved romtemperatur i opptil tre timer, til den er klar til bruk. Først aspirerer du det brukte mediet og bruker en pipette til å legge til to milliliter edta på 0,5 millimolar til hver brønn for å vaske hPCSs dyrket i seksbrønnplaten.Deretter aspirerer EDTA fra brønnene og legger til to milliliter frisk 0,5 millimolar EDTA til hver brønn. Inkuber platen ved 37 grader Celsius i fem minutter. Etter dette, aspirere EDTA fra hver brønn.Tilsett en milliliter hPSC vedlikeholdsmedium ved romtemperatur, supplert med 10 mikromos Y27632 til hver brønn. Pipette forsiktig, men raskt for å blåse av de vedlagte cellene på platen og å dissosiere noen klumpete celler i enkeltceller. Overfør cellefjæringen i et 50 milliliter sentrifugerør som inneholder fire milliliter hPSC vedlikeholdsmedium supplert med 10 mikromos Y27632 per brønn og bland ved pipettering.Bland deretter 15 mikroliter cellefjæring med 15 mikroliter trypanblå i røret. Bruk en 10 mikroliter pipette til å overføre 10 mikroliter av den fortynnede cellesuspensjonen til celletellingslysbildene i duplikat. Bruk en automatisert celleteller til å telle cellenummeret og beregne celletettheten i cellesuspensjonen.Tildel cellesuspensjonen i et 50 milliliter rør med en tetthet på en til en og en halv million celler for hver brønn som skal brukes. Sentrifuger røret ved 200 ganger G og ved romtemperatur i fem minutter. Etter dette, bruk en pipette til å aspirere supernatant og re-suspendere cellene ved hjelp av en milliliter stadium 1A medium per brønn.Pipette cellefjæringen forsiktig og tilsett deretter en annen milliliter stadium 1A medium per brønn. Bruk en 1000 mikroliter pipette, aspirer den fortynnede kjellermembranmatrisen fra brønnene til den tidligere tilberedte cellekulturplaten. Rør umiddelbart suspensjonen i røret forsiktig og overfør to milliliter til hver brønn av en seksbrønns plate.Dekk platen med aluminiumsfolie for å beskytte den mot lys og plasser platen på en ren benk ved romtemperatur i 10 til 15 minutter. Etter dette, forsiktig overføre platen til en inkubator ved 37 grader Celsius med 5% karbondioksid og en fuktet atmosfære i 24 timer. Først rister du platen forsiktig og bruker en pipette til å aspirere det brukte mediet.Deretter legger du til to milliliter DPBS til hver brønn. Rist platen forsiktig igjen og aspirer den brukte DPBS. Tilsett fire milliliter av stadium 1B medium, forvarmet til 37 grader Celsius, til hver brønn.Overfør platen forsiktig til en inkubator ved 37 grader Celsius med 5% karbondioksid og en fuktet atmosfære til kultur i 48 timer. Etter dette rister du forsiktig platen og aspirerer det brukte mediet. Legg til to milliliter DPBS til hver brønn.Gjenta denne ambisjonen og tillegg av DPBS en ekstra gang. Rist platen forsiktig og aspirer den brukte DPBS. Tilsett fire milliliter av stadium 1B medium, forvarmet til 37 grader Celsius, til hver brønn.Overfør platen forsiktig til en inkubator, ved 37 grader Celsius med 5% karbondioksid og en fuktet atmosfære til kultur i 24 timer. Først rister du platen forsiktig og aspirerer det brukte mediet. Tilsett to milliliter DPBS til hver brønn av seksbrønnsplaten.Deretter rister du forsiktig platen og aspirerer den brukte DPBS. Tilsett fire milliliter av trinn to medium, forhåndsoppvarmet til 37 grader Celsius, til hver brønn. Overfør platen forsiktig til en inkubator ved 37 grader Celsius med 5% karbondioksid og en fuktet atmosfære til kultur i fire dager.Rist platen forsiktig og aspirer det brukte mediet. Legg til to milliliter DPBS til hver brønn. Gjenta denne prosessen med å aspirere og legge til DPPS igjen.Etter dette rister du forsiktig platen og aspirerer de brukte DPBS. Tilsett fire milliliter av trinn tre medium, forhåndsoppvarmet til 37 grader Celsius, til hver brønn. Overfør platen forsiktig til en inkubator ved 37 grader Celsius med 5% karbondioksid og en fuktet atmosfære til kultur i tre dager.I denne studien kondenseres forplantede hIPSE og danner et homogent monolag som er egnet for differensiering. Udifferentierte hIPSE er dissosiert og reseeded som enkeltceller ved lav celle tettheter. Innen en time er cellene festet til platen og begynner å vise fremspring.På dag én blir cellene spredt og godt fordelt til å dekke 80 til 90% av overflatearealet. På dag tre og fire danner cellene et homogent monolayerark som kan beskrives som et brosteinsutseende. På dette punktet slutter de fleste celler å uttrykke SOX2, som er en markør for udifferensierte celler, og uttrykker i stedet en definitiv endoderm markør, SOX17, på mer enn 90% De fleste SOX17-positive celler uttrykker FOXA2.Deretter begynner cellene å uttrykke de primitive goptupe markører, HNF1-beta og HNF4-alfa, og til slutt uttrykke en bakre foregrate pankreas stamcellemarkør, PDX1, på mer enn 90%PDX1-positiv celleinduksjon er reproduserbar i en annen hIPSE linje, 1231A3, og en HMS linje, KhES-3. QRTPCR-resultatene av MRNA-uttrykket for scenemarkører er konsistente med immunstaining, og MRNA-uttrykket for PDX1 er tydelig på trinn tre og øker betydelig etterpå. Siden udifferentierte ESIPS-celler dyrkes som kolonier, er individuelle celler lokalt i en annen tilstand.Denne protokollen gir en måte å stimulere celler jevnt for den valgte differensieringen.

Research

JoVE Journal

Developmental Biology

Efficient Generation of Pancreas/Duodenum Homeobox Protein 1+ Posterior Foregut/Pancreatic Progenitors from hPSCs in Adhesion Cultures

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Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells

Rettet differensiering av Primitive og Definitive blodkreft Progenitors fra menneskelige Pluripotent stamceller

One of the major goals for regenerative medicine is the generation and maintenance of hematopoietic stem cells (HSCs) derived from human pluripotent stem ...

Efficient Differentiation of Pluripotent Stem Cells to NKX6-1+ Pancreatic Progenitors

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Pluripotent stem cells have the ability to self renew and differentiate to multiple lineages, making them an attractive source for the generation of ...

Isolation, Culture, and Differentiation of Bone Marrow Stromal Cells and Osteoclast Progenitors from Mice

Isolasjon, kultur og differensiering av benmarg Stromal celler og Osteoclast Progenitors fra mus

Bone marrow stromal cells (BMSCs) constitute a cell population routinely used as a representation of mesenchymal stem cells in vitro. They reside within ...

Generation of Scaffold-free, Three-dimensional Insulin Expressing Pancreatoids from Mouse Pancreatic Progenitors In Vitro

Generation of Scaffold-free, Three-dimensional Insulin Expressing Pancreatoids from Mouse Pancreatic Progenitors In Vitro

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The pancreas is a complex organ composed of many different cell types that work together to regulate blood glucose homeostasis and digestion. These cell ...

Generation of First Heart Field-like Cardiac Progenitors and Ventricular-like Cardiomyocytes from Human Pluripotent Stem Cells

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The generation of large amounts of functional human pluripotent stem cells-derived cardiac progenitors and cardiomyocytes of defined heart field origin is ...

In Vitro Generation of Somite Derivatives from Human Induced Pluripotent Stem Cells

I Vitro generasjon av Somite derivater fra menneske indusert stamceller Pluripotent

In response to signals such as WNTs, bone morphogenetic proteins (BMPs), and sonic hedgehog (SHH) secreted from surrounding tissues, somites (SMs) give ...

Differentiation and Characterization of Neural Progenitors and Neurons from Mouse Embryonic Stem Cells

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We describe the step-by-step procedure for culturing and differentiating mouse embryonic stem cells into neuronal lineages, followed by a series of assays ...