Name: three-dimensional, serum-free culture system for lacrimal gland stem cells
Uploaded: 2022-06-02T13:00:00
Description: Watch this Scientific Journal Video about Three-Dimensional, Serum-Free Culture System for Lacrimal Gland Stem Cells at JoVE.com

Dette arbejde blev støttet af et tilskud fra National Natural Science Foundation of China (nr. 31871413) og to programmer for Guangdong Science and Technology (2017B020230002 og 2016B030231001). Vi er virkelig taknemmelige for de forskere, der har hjulpet os under undersøgelsen og for de medarbejdere, der arbejder i dyrecentret for deres støtte i dyrepleje.

Alle eksperimenterne i denne protokol fulgte retningslinjerne for dyrepleje fra Den Etiske Komité for Dyreforsøg ved Sun Yat-sen University. Alle cellerelaterede operationer skal udføres på det ultrarengørende arbejdsbord i celleoperationsrummet. Alle operationer med xylen skal udføres i røghætter.
1. LGSC primær kultur
<ol><li>LG isolation<ol>
<li>Få en 6-8 uger gammel BALB/c hanmus, og skær huden bag øret for at udsætte LG og bindevævet omkring det. Skræl bi...

<ol>
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L., Avidan, O., Miyasaki, D., Zoukhri, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Isolation+and+propagation+of+mesenchymal+stem+cells+from+the+lacrimal+gland.">Isolation and propagation of mesenchymal stem cells from the lacrimal gland.</a> Investigative Ophthalmology &amp; Visual Science. 52 (5), 2087-2094 (2011).</li><li>Ackermann, 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=Isolation+and+investigation+of+presumptive+murine+lacrimal+gland+stem+cells.">Isolation and investigation of presumptive murine lacrimal gland stem cells.</a> Investigative Ophthalmology &amp; Visual Science. 56 (8), 4350-4363 (2015).</li><li>Sato, 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=Single+Lgr5+stem+cells+build+crypt-villus+structures+in+vitro+without+a+mesenchymal+niche.">Single Lgr5 stem cells build crypt-villus structures in vitro without a mesenchymal niche.</a> Nature. 459 (7244), 262-265 (2009).</li><li>Lugli, N., 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=R-spondin+1+and+noggin+facilitate+expansion+of+resident+stem+cells+from+non-damaged+gallbladders.">R-spondin 1 and noggin facilitate expansion of resident stem cells from non-damaged gallbladders.</a> EMBO Reports. 17 (5), 769-779 (2016).</li><li>Huch, 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=Long-term+culture+of+genome-stable+bipotent+stem+cells+from+adult+human+liver.">Long-term culture of genome-stable bipotent stem cells from adult human liver.</a> Cell. 160 (1), 299-312 (2015).</li><li>Boj, S. 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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=Quantification+of+regenerative+potential+in+primary+human+mammary+epithelial+cells.">Quantification of regenerative potential in primary human mammary epithelial cells.</a> Development. 142 (18), 3239-3251 (2015).</li><li>Rock, 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=Basal+cells+as+stem+cells+of+the+mouse+trachea+and+human+airway+epithelium.">Basal cells as stem cells of the mouse trachea and human airway epithelium.</a> Proceedings of the National Academy of Sciences of the United States of America. 106 (31), 12771-12775 (2009).</li><li>Chua, C. 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=Single+luminal+epithelial+progenitors+can+generate+prostate+organoids+in+culture.">Single luminal epithelial progenitors can generate prostate organoids in culture.</a> Nature Cell Biology. 16 (1), 951-961 (2014).</li><li>Maimets, 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=Long-term+in+vitro+expansion+of+salivary+gland+stem+cells+driven+by+Wnt+signals.">Long-term in vitro expansion of salivary gland stem cells driven by Wnt signals.</a> Stem Cell Reports. 6 (1), 150-162 (2016).</li><li>Xiao, S., Zhang, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Establishment+of+long-term+serum-free+culture+for+lacrimal+gland+stem+cells+aiming+at+lacrimal+gland+repair.">Establishment of long-term serum-free culture for lacrimal gland stem cells aiming at lacrimal gland repair.</a> Stem Cell Research &amp; Therapy. 11 (1), 20 (2020).</li><li>Shatos, M. A., Haugaard-Kedstrom, L., Hodges, R. R., Dartt, D. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Isolation+and+characterization+of+progenitor+cells+in+uninjured,+adult+rat+lacrimal+gland.">Isolation and characterization of progenitor cells in uninjured, adult rat lacrimal gland.</a> Investigative Ophthalmology &amp; Visual Science. 53 (6), 2749-2759 (2012).</li><li>Mishima, 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=Transplantation+of+side+population+cells+restores+the+function+of+damaged+exocrine+glands+through+clusterin.">Transplantation of side population cells restores the function of damaged exocrine glands through clusterin.</a> Stem Cells. 30 (9), 1925-1937 (2012).</li><li>Aluri, H. 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=Delivery+of+bone+marrow-derived+mesenchymal+stem+cells+improves+tear+production+in+a+mouse+model+of+sj&#246;gren's+syndrome.">Delivery of bone marrow-derived mesenchymal stem cells improves tear production in a mouse model of sj&#246;gren's syndrome.</a> Stem Cells International. 2017, 1-10 (2017).</li><li>Dietrich, J., Schrader, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Towards+lacrimal+gland+regeneration:+current+concepts+and+experimental+approaches.">Towards lacrimal gland regeneration: current concepts and experimental approaches.</a> Current Eye Research. 45 (3), 230-240 (2020).</li><li>Sato, T., Clevers, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=SnapShot:+growing+organoids+from+stem+cells.">SnapShot: growing organoids from stem cells.</a> Cell. 161 (7), 1700 (2015).</li><li>Kleinman, H. K., Martin, G. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Matrigel:+basement+membrane+matrix+with+biological+activity.">Matrigel: basement membrane matrix with biological activity.</a> Seminars in Cancer Biology. 15 (5), 378-386 (2005).</li><li>Arnaoutova, I., George, J., Kleinman, H. K., Benton, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Basement+membrane+matrix+(BME)+has+multiple+uses+with+stem+cells.">Basement membrane matrix (BME) has multiple uses with stem cells.</a> Stem Cell Reviews and Reports. 8 (1), 163-169 (2012).</li></ol>

Der er veletablerede metoder til isolering og in vitro-dyrkning af lacrimal stamceller til lacrimal stamcellekultur og LG skade reparation. Shatos et al.17 og Ackermannet al. 6 succesfuldt dyrkede og subkulturerede lacrimale stamceller fra henholdsvis rotter og mus ved hjælp af henholdsvis 2D-dyrkningsmetoder, hvilket gør det muligt at transplantere lacrimale stamceller til behandling af ADDED. Undersøgelser af stamceller18 og me...

Lacrimal kirtel stamceller (LGSC'er) opretholde lacrimal kirtel (LG) cellefornyelse og er kilden til acinar og duktal celler. Derfor betragtes LGSC-transplantation som en alternativ tilgang til behandling af alvorlig inflammatorisk skade og vandig-mangelfuld tør øjensygdom (TILFØJET)1,2,3. Tiwari et al. adskilte og dyrkede primære LG-celler ved hjælp af kollagen I og matrixgel suppleret med flere vækstfaktorer; LG-cellerne kunne dog ikke kontinuerligt dyrkes4. Ved hjælp af todimensionel (2D) kultur blev mus LG-afledte stamceller isoleret af You et al.5 og Ackermann et al. 6, fundet at udtrykke stam-/stamcellemarkørgenerne, Oct4, Sox2, Nanog og nestin, og kunne subkultureres. Der er imidlertid ingen klar indikation af, at disse celler kan differentiere sig til acinar- eller duktale celler, og der er ikke noget transplantationseksperiment for at verificere differentieringspotentialet in vivo.
For nylig blev c-kit + dim / EpCAM + / Sca1-/ CD34-/ CD45-celler isoleret fra muse-LP'er ved flowcytometri, fundet at udtrykke LG-stamcellemarkører, såsom Pax6 og Runx1, og differentieret i kanaler og acini in vitro. Hos mus med ADDED kan ortopisk injektion med disse celler reparere beskadigede LC'er og genoprette SEK'ernes sekretoriskefunktion. Antallet af stamceller isoleret ved denne metode var imidlertid lille, og der er ingen egnede kulturbetingelser for udvidelse af de isolerede LGSC'er. Sammenfattende skal der etableres et passende kultursystem til effektivt at isolere og dyrke voksne LGSC'er med stabil og kontinuerlig ekspansion til undersøgelse af LGSC'er i behandlingen af ADDED.
Organoider afledt af stamceller eller pluripotente stamceller er en gruppe celler, der histologisk ligner de beslægtede organer og kan opretholde deres egen fornyelse. Efter at musens tarmorganoid med succes blev dyrket af Sato et al. i 20097, blev organoider fra andre organer dyrket efter hinanden baseret på Satos kultursystem, såsom galdeblære8, lever9, bugspytkirtel10, mave11, bryst12, lunge13, prostata14 og spytkirtel15 . På grund af den høje andel af voksne stamceller før celledifferentiering i organoidkultur betragtes den tredimensionelle (3D) organoidkulturmetode som optimal til isolering og dyrkning af voksne stamceller fra LG.
Et LGSC-dyrkningssystem for voksne mus blev etableret i denne undersøgelse ved at optimere 3D, serumfri dyrkningsmetode. Det er bevist, at LGSC'erne dyrket fra både normale og TILFØJEDE mus viste en stabil kapacitet til selvfornyelse og spredning. Efter transplantation i ADDED-muse-LP'erne koloniserede LGSC'er de svækkede LC'er og forbedrede tåreproduktionen. Derudover blev røde fluorescerende LGSC'er isoleret fra ROSA26mT / mG mus og dyrket. Dette arbejde giver en pålidelig reference for LGSC berigelse in vitro og LGSC autograft i klinisk anvendelse til ADDED terapi.

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr>
			<td>Animal(Mouse)</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Bal B/C</td>
			<td>Model Animal Research Center of Nanjing University</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>C57 BL/6J</td>
			<td>Laboratory Animal Center of Sun Yat-sen University</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>NOD/ShiLtJ</td>
			<td>Model Animal Research Center of Nanjing University</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>ROSA26mT/mG</td>
			<td>Model Animal Research Center of Nanjing University</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Equipment</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Analytical balance</td>
			<td>Sartorius</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Automatic dehydrator</td>
			<td>Thermo</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Blood counting chamber</td>
			<td>BLAU</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Cell Counter</td>
			<td>CountStar</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>CO2 constant temperature incubator</td>
			<td>Thermo</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>ECL Gel imaging system</td>
			<td>GE healthcare</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Electric bath for water bath</td>
			<td>Yiheng Technology</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Electrophoresis apparatus</td>
			<td>BioRad</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Fluorescence quantitative PCR instrument</td>
			<td>Roche</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Frozen tissue slicer</td>
			<td>Lecia</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Horizontal centrifuge</td>
			<td>CENCE</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Inverted fluorescence microscope</td>
			<td>Nikon</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Inverted microscope</td>
			<td>Olympus</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Laser lamellar scanning micrograph</td>
			<td>Carl Zeiss</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Liquid nitrogen container</td>
			<td>Thermo</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Low temperature high speed centrifuge</td>
			<td>Eppendorf</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Micropipettor</td>
			<td>Gilson</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Microwave oven</td>
			<td>Panasonic</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Nanodrop ultraviolet spectrophotometer</td>
			<td>Thermo</td>
			<td>measure RNA concentration</td>
			<td></td>
		</tr>
		<tr>
			<td>Paraffin slicing machine</td>
			<td>Thermo</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>PCR Amplifier</td>
			<td>Eppendorf</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>pH value tester</td>
			<td>Sartorius</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>4 &#176;C Refrigerator</td>
			<td>Haier</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Thermostatic culture oscillator</td>
			<td>ZHICHENG</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Tissue paraffin embedding instrument</td>
			<td>Thermo</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>&#160;-80&#176;C Ultra-low temperature refrigerator</td>
			<td>Thermo</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>&#160;-20&#176;C Ultra-low temperature refrigerator</td>
			<td>Thermo</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Ultra pure water purification system</td>
			<td>ELGA</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Reagent</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Animal Experiment</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>HCG</td>
			<td>Sigma</td>
			<td>9002-61-3</td>
			<td></td>
		</tr>
		<tr>
			<td>PMSG</td>
			<td>Sigma</td>
			<td>14158-65-7</td>
			<td></td>
		</tr>
		<tr>
			<td>Pentobarbital Sodium</td>
			<td>Sigma</td>
			<td>57-33-0</td>
			<td></td>
		</tr>
		<tr>
			<td>Cell Culture</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>B27</td>
			<td>Gibco</td>
			<td>17504044</td>
			<td></td>
		</tr>
		<tr>
			<td>Collagenase I</td>
			<td>Gibco</td>
			<td>17018029</td>
			<td></td>
		</tr>
		<tr>
			<td>Dispase</td>
			<td>BD</td>
			<td>354235</td>
			<td></td>
		</tr>
		<tr>
			<td>DMEM</td>
			<td>Sigma</td>
			<td>D6429</td>
			<td></td>
		</tr>
		<tr>
			<td>DMEM/F12</td>
			<td>Sigma</td>
			<td>D0697</td>
			<td></td>
		</tr>
		<tr>
			<td>DMSO</td>
			<td>Sigma</td>
			<td>67-68-5</td>
			<td></td>
		</tr>
		<tr>
			<td>EDTA</td>
			<td>Sangon Biotech</td>
			<td>A500895</td>
			<td></td>
		</tr>
		<tr>
			<td>Foetal Bovine Serum</td>
			<td>Gibco</td>
			<td>04-001-1ACS</td>
			<td></td>
		</tr>
		<tr>
			<td>GlutaMax</td>
			<td>Gibco</td>
			<td>35050087</td>
			<td></td>
		</tr>
		<tr>
			<td>Human FGF10</td>
			<td>PeproTech</td>
			<td>100-26</td>
			<td></td>
		</tr>
		<tr>
			<td>Matrigel (Matrix gel)</td>
			<td>BD</td>
			<td>356231</td>
			<td></td>
		</tr>
		<tr>
			<td>Murine Noggin</td>
			<td>PeproTech</td>
			<td>250-38</td>
			<td></td>
		</tr>
		<tr>
			<td>Murine Wnt3A</td>
			<td>PeproTech</td>
			<td>315-20</td>
			<td></td>
		</tr>
		<tr>
			<td>Murine EGF</td>
			<td>PeproTech</td>
			<td>315-09</td>
			<td></td>
		</tr>
		<tr>
			<td>NEAA</td>
			<td>Gibco</td>
			<td>11140050</td>
			<td></td>
		</tr>
		<tr>
			<td>N2</td>
			<td>Gibco</td>
			<td>17502048</td>
			<td></td>
		</tr>
		<tr>
			<td>R-spondin 1</td>
			<td>PeproTech</td>
			<td>120-38</td>
			<td></td>
		</tr>
		<tr>
			<td>Trypsin Inhibitor (TI)</td>
			<td>Sigma</td>
			<td>T6522</td>
			<td>Derived from Glycine max; can inhibit trypsin, chymotrypsin, and plasminase to a lesser extent. One mg will inhibit 1.0-3.0 mg of trypsin.</td>
		</tr>
		<tr>
			<td>Trypsin</td>
			<td>Sigma</td>
			<td>&#160;T4799</td>
			<td></td>
		</tr>
		<tr>
			<td>Y-27632</td>
			<td>Selleck</td>
			<td>S1049</td>
			<td></td>
		</tr>
		<tr>
			<td>HE staining &#38; Immunostaining</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Alexa Fluor 488 donkey anti-Mouse IgG</td>
			<td>Thermo</td>
			<td>A-21202</td>
			<td>Used dilution: IHC) 2 &#956;g/mL, (IF) 0.2 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Alexa Fluor 488 donkey anti-Rabbit IgG</td>
			<td>Thermo</td>
			<td>A-21206</td>
			<td>Used dilution: (IHC) 2 &#956;g/mL, (IF) 2 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Alexa Fluor 568 donkey anti-Mouse IgG</td>
			<td>Thermo</td>
			<td>A-10037</td>
			<td>Used dilution: (IHC) 2 &#956;g/mL, (IF) 2 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Alexa Fluor 568 donkey anti-Rabbit IgG</td>
			<td>Thermo</td>
			<td>A-10042</td>
			<td>Used dilution: (IHC) 2 &#956;g/mL, (IF) 4 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Anti-AQP5 rabbit antibody</td>
			<td>Abcam</td>
			<td>ab104751</td>
			<td>Used dilution: (IHC) 1 &#956;g/mL, (IF) 0.1 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Anti-E-cadherin Rat antibody</td>
			<td>Abcam</td>
			<td>ab11512</td>
			<td>Used dilution: (IF)&#160; 5 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Anti-Keratin14 rabbit antibody</td>
			<td>Abcam</td>
			<td>ab181595</td>
			<td>Used dilution: (IHC) 1 &#956;g/mL, (IF) 2 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Anti-Ki67 rabbit antibody</td>
			<td>Abcam</td>
			<td>ab15580</td>
			<td>Used dilution: (IHC) 1 &#956;g/mL, (IF) 1 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Anti-mCherry mouse antibody</td>
			<td>Abcam</td>
			<td>ab125096</td>
			<td>Used dilution: (IHC) 2 &#956;g/mL, (IF) 2 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Anti-mCherry rabbit antibody</td>
			<td>Abcam</td>
			<td>ab167453</td>
			<td>Used dilution: (IF)&#160; 2 &#956;g/mL</td>
		</tr>
		<tr>
			<td>C6H8O7</td>
			<td>Sangon Biotech</td>
			<td>A501702-0500</td>
			<td></td>
		</tr>
		<tr>
			<td>Citric Acid</td>
			<td>Sangon Biotech</td>
			<td>201-069-1</td>
			<td></td>
		</tr>
		<tr>
			<td>DAB Kit (20x)</td>
			<td>CWBIO</td>
			<td>CW0125</td>
			<td></td>
		</tr>
		<tr>
			<td>DAPI</td>
			<td>Thermo</td>
			<td>62248</td>
			<td></td>
		</tr>
		<tr>
			<td>Eosin</td>
			<td>BASO</td>
			<td>68115</td>
			<td></td>
		</tr>
		<tr>
			<td>Fluorescent Mounting Medium</td>
			<td>Dako</td>
			<td>S3023</td>
			<td></td>
		</tr>
		<tr>
			<td>Formalin</td>
			<td>Sangon Biotech</td>
			<td>A501912-0500</td>
			<td></td>
		</tr>
		<tr>
			<td>Goat anti-Mouse IgG antibody (HRP)</td>
			<td>Abcam</td>
			<td>ab6789</td>
			<td>Used dilution: 2 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Goat anti-Rabbit IgG antibody(HRP)</td>
			<td>Abcam</td>
			<td>ab6721</td>
			<td>Used dilution: 2 &#956;g/mL</td>
		</tr>
		<tr>
			<td>Hematoxylin</td>
			<td>BASO</td>
			<td>517-28-2</td>
			<td></td>
		</tr>
		<tr>
			<td>Histogel (Embedding hydrogel)</td>
			<td>Thermo</td>
			<td>HG-400-012</td>
			<td></td>
		</tr>
		<tr>
			<td>30% H2O2</td>
			<td>Guangzhou Chemistry</td>
			<td>KD10</td>
			<td></td>
		</tr>
		<tr>
			<td>30% Hydrogen Peroxide Solution</td>
			<td>Guangzhou Chemistry</td>
			<td>7722-84-1</td>
			<td></td>
		</tr>
		<tr>
			<td>Methanol</td>
			<td>Guangzhou Chemistry</td>
			<td>67-56-1</td>
			<td></td>
		</tr>
		<tr>
			<td>Na3C6H5O7.2H2O</td>
			<td>Sangon Biotech</td>
			<td>A501293-0500</td>
			<td></td>
		</tr>
		<tr>
			<td>Neutral balsam</td>
			<td>SHANGHAI YIYANG</td>
			<td>YY-Neutral balsam</td>
			<td></td>
		</tr>
		<tr>
			<td>Non-immunized Goat Serum</td>
			<td>BOSTER</td>
			<td>AR0009</td>
			<td></td>
		</tr>
		<tr>
			<td>Paraffin</td>
			<td>Sangon Biotech</td>
			<td>A601891-0500</td>
			<td></td>
		</tr>
		<tr>
			<td>Paraformaldehyde</td>
			<td>DAMAO</td>
			<td>200-001-8</td>
			<td></td>
		</tr>
		<tr>
			<td>Saccharose</td>
			<td>Guangzhou Chemistry</td>
			<td>57-50-1</td>
			<td></td>
		</tr>
		<tr>
			<td>Sodium citrate tribasic dihydrate</td>
			<td>Sangon Biotech</td>
			<td>200-675-3</td>
			<td></td>
		</tr>
		<tr>
			<td>Sucrose</td>
			<td>Guangzhou Chemistry</td>
			<td>IB11-AR-500G</td>
			<td></td>
		</tr>
		<tr>
			<td>Tissue-Tek O.T.C. Compound</td>
			<td>SAKURA</td>
			<td>SAKURA.4583</td>
			<td></td>
		</tr>
		<tr>
			<td>Triton X-100</td>
			<td>DINGGUO</td>
			<td>9002-93-1</td>
			<td></td>
		</tr>
		<tr>
			<td>Xylene</td>
			<td>Guangzhou Chemistry</td>
			<td>128686-03-3</td>
			<td></td>
		</tr>
		<tr>
			<td>RT-PCR &#38; qRT-PCR</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Agarose</td>
			<td>Sigma</td>
			<td>9012-36-6</td>
			<td></td>
		</tr>
		<tr>
			<td>Alcohol</td>
			<td>Guangzhou Chemistry</td>
			<td>64-17-5</td>
			<td></td>
		</tr>
		<tr>
			<td>Chloroform</td>
			<td>Guangzhou Chemistry</td>
			<td>865-49-6</td>
			<td></td>
		</tr>
		<tr>
			<td>Ethidium Bromide</td>
			<td>Sangon Biotech</td>
			<td>214-984-6</td>
			<td></td>
		</tr>
		<tr>
			<td>Isopropyl Alcohol</td>
			<td>Guangzhou Chemistry</td>
			<td>67-63-0</td>
			<td></td>
		</tr>
		<tr>
			<td>LightCycler 480 SYBR Green I Master Mix</td>
			<td>Roche</td>
			<td>488735200H</td>
			<td></td>
		</tr>
		<tr>
			<td>ReverTra Ace qPCR RT Master Mix</td>
			<td>TOYOBO</td>
			<td>-</td>
			<td></td>
		</tr>
		<tr>
			<td>Taq DNA Polymerase</td>
			<td>TAKARA</td>
			<td>R10T1</td>
			<td></td>
		</tr>
		<tr>
			<td>Goldview (nucleic acid stain)</td>
			<td>BioSharp</td>
			<td>BS357A</td>
			<td></td>
		</tr>
		<tr>
			<td>TRIzol</td>
			<td>Magen</td>
			<td>R4801-02</td>
			<td></td>
		</tr>
		<tr>
			<td>Vector Construction &#38; Cell Transfection</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Agar</td>
			<td>OXID</td>
			<td>-</td>
			<td></td>
		</tr>
		<tr>
			<td>Ampicillin</td>
			<td>Sigma</td>
			<td>69-52-3</td>
			<td></td>
		</tr>
		<tr>
			<td>Chloramphenicol</td>
			<td>Sigma</td>
			<td>56-75-7</td>
			<td></td>
		</tr>
		<tr>
			<td>Endotoxin-free Plasmid Extraction Kit</td>
			<td>Thermo</td>
			<td>A36227</td>
			<td></td>
		</tr>
		<tr>
			<td>Kanamycin</td>
			<td>Sigma</td>
			<td>25389-94-0</td>
			<td></td>
		</tr>
		<tr>
			<td>Lipo3000 Plasmid Transfection Kit</td>
			<td>Thermo</td>
			<td>L3000015</td>
			<td></td>
		</tr>
		<tr>
			<td>LR Reaction Kit</td>
			<td>Thermo</td>
			<td>11791019</td>
			<td></td>
		</tr>
		<tr>
			<td>Plasmid Extraction Kit</td>
			<td>TIANGEN</td>
			<td>DP103</td>
			<td></td>
		</tr>
		<tr>
			<td>Trans5&#945; Chemically Competent Cell</td>
			<td>TRANSGEN</td>
			<td>CD201-01</td>
			<td></td>
		</tr>
		<tr>
			<td>Trytone</td>
			<td>OXID</td>
			<td>-</td>
			<td></td>
		</tr>
		<tr>
			<td>Yeast Extract</td>
			<td>OXID</td>
			<td>-</td>
			<td></td>
		</tr>
		<tr>
			<td>Primers and Sequence</td>
			<td>Company</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Primer: AQP5 
			Sequence: 
			F: CATGAACCCAGCCCGATCTT 
			R: CTTCTGCTCCCATCCCATCC</td>
			<td>Synbio Tech</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Primer: &#946;-actin 
			Sequence: 
			F: AGATCAAGATCATTGCTCCTCCT 
			R: AGATCAAGATCATTGCTCCTCCT</td>
			<td>Synbio Tech</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Primer: Epcam 
			Sequence: 
			F: CATTTGCTCCAAACTGGCGT 
			R: TGTCCTTGTCGGTTCTTCGG</td>
			<td>Synbio Tech</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Primer: Krt5 
			Sequence: 
			F: AGCAATGGCGTTCTGGAGG 
			R: GCTGAAGGTCAGGTAGAGCC</td>
			<td>Synbio Tech</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Primer: Krt14 
			Sequence: 
			F: CGGACCAAGTTTGAGACGGA 
			R: GCCACCTCCTCGTGGTTC</td>
			<td>Synbio Tech</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Primer: Krt19 
			Sequence: 
			F: TCTTTGAAAAACACTGAACCCTG 
			R: TGGCTCCTCAGGGCAGTAAT</td>
			<td>Synbio Tech</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Primer: Ltf 
			Sequence: 
			F: CACATGCTGTCGTATCCCGA 
			R: CGATGCCCTGATGGACGA</td>
			<td>Synbio Tech</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Primer: Nestin 
			Sequence: 
			F: GGGGCTACAGGAGTGGAAAC 
			R: GACCTCTAGGGTTCCCGTCT</td>
			<td>Synbio Tech</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Primer: P63 
			Sequence: 
			F: TCCTATCACGGGAAGGCAGA 
			R: GTACCATCGCCGTTCTTTGC</td>
			<td>Synbio Tech</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Vector</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>pLX302 lentivirus no-load vector</td>
			<td>Addgene</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>pENRTY-mCherry</td>
			<td>Xiaofeng Qin laboratory, Sun Yat-sen University</td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

three-dimensional, serum-free culture system for lacrimal gland stem cells

Lacrimal kirtel (LG) stamcellebaseret terapi er en lovende strategi for lacrimal kirtel sygdomme. Manglen på en pålidelig, serumfri dyrkningsmetode til opnåelse af et tilstrækkeligt antal LG-stamceller (LGSC'er) er imidlertid en hindring for yderligere forskning og anvendelse. Den tredimensionelle (3D), serumfri dyrkningsmetode til lgsc'er med voksne mus er veletableret og vist her. LGSC'erne kunne kontinuerligt passeres og induceres til at differentiere til acinar eller duktallignende celler.
For LGSC primærkulturen blev LP'erne fra 6-8 uger gamle mus fordøjet med dispase, collagenase I og trypsin-EDTA. I alt 1 × 104 enkeltceller blev podet i 80 μL matrix gel-lacrimal kirtel stamcelle medium (LGSCM) matrix i hver brønd af en 24-brønd plade, forbelagt med 20 μL matrix gel-LGSCM matrix. Blandingen blev størknet efter inkubation i 20 minutter ved 37 °C, og der blev tilsat 600 μL LGSCM.
Til LGSC-vedligeholdelse blev LGSC'er dyrket i 7 dage opdelt i enkeltceller ved dispase og trypsin-EDTA. Enkeltcellerne blev implanteret og dyrket i henhold til den metode, der blev anvendt i LGSC primærkulturen. LGSC'er kunne passeres over 40 gange og kontinuerligt udtrykke stam- / stamcellemarkører Krt14, Krt5, P63 og nestin. LGSC'er dyrket i LGSCM har selvfornyelseskapacitet og kan differentiere sig til acinar- eller duktallignende celler in vitro og in vivo.

Etabler 3D, serumfrit kultursystem I denne undersøgelse blev LGSCM indeholdende EGF, Wnt3A, FGF10 og Y-27632 til LGSC'er til mus udviklet, og LGSC'er blev med succes isoleret og dyrket ved en 3D-dyrkningsmetode (figur 1A). Et vellykket 3D, serumfrit dyrkningssystem af LGSC'er fra C57BL/6-mus, NOD/ShiLtJ-mus, BALB/c-mus og ROSA26mT/mG-mus er blevet etableret ved hjælp af denne metode16. For en hanmus blev 1,5-2 × 106 celler ...

Watch this Scientific Journal Video about Three-Dimensional, Serum-Free Culture System for Lacrimal Gland Stem Cells at JoVE.com

Three-Dimensional, Serum-Free Culture System for Lacrimal Gland Stem Cells

Den tredimensionelle, serumfri dyrkningsmetode til voksne lacrimal kirtel (LG) stamceller er veletableret til induktion af LG organoiddannelse og differentiering i acinar eller duktallignende celler.

Tredimensionelt, serumfrit kultursystem til stamceller fra lacrimalkirtlen

Lacrimal gland (LG) stem cell-based therapy is a promising strategy for lacrimal gland diseases. However, the lack of a reliable, serum-free culture ...

Denne protokol giver en fordelagtig strategi til berigelse af lacrimal kirtel stamceller til regenerering og rekonstruktion af lacrimal kirtel. Lacrimal kirtel stamceller viser langsigtet ekspansionskapacitet og potentialet for differentiering. Den største fordel ved denne teknik er, at dyrkningsmediet til lacrimal kirtel stamceller er serumfri, hvilket viser den enorme værdi for lacrimal kirtel reparation Begynd med at få en aflivet seks til otte uger gammel BALB / c mandlig mus og skære huden bag øret for at udsætte lacrimal kirtel og bindevæv omkring det.Skræl bindevævet af ved stump dissektion ved hjælp af pincet og fjern lacrimalkirtlen. Dyp lacrimalkirtlerne i en seks centimeter skål med fire milliliter 75% ethanol i 10 sekunder og skyll straks med 10-millimolar PBS-opløsning to gange. Skær lacrimalkirtlerne i små fragmenter på ca. en millimeter kubet.Overfør dem til et sterilt 15-milliliter centrifugerør og behandl vævene med 500 mikroliter på 25 enheder pr. milliliter dispase og 500 mikroliter 0,1% collagenase I i en time ved 37 grader Celsius. Behandl lacrimalkirtelfragmenterne med en milliliter 0,05% trypsin EDTA i 10 minutter ved 37 grader Celsius og dissocier fragmenterne i enkeltceller ved pipettering gentagne gange. Suspensionen filtreres gennem et 70 mikrometer filter, opsamles filteret i et sterilt 15 ml centrifugerør og centrifugeres ved 150 gange G i fem minutter.Efter centrifugering fjernes supernatanten, tilsættes 10 ml 10-millimolar PBS-opløsning for at vaske cellepellet og centrifugeres suspensionen ved 150 gange G i fem minutter. Gentag vask af cellepellet. Fjern derefter supernatanten og tilsæt en milliliter af et 1: 1-forhold mellem Dulbecco's Modified Eagles Medium og Ham's F-12 for at genoplive cellepillerne.Tilsæt 20 mikroliter matrix gel lacrimal kirtel stamcelle medium matrix i midten af brønden af en 24-brønd plade. Brug en pipettespids til at udvide den til en cirkel med en diameter på ca. seks til otte millimeter, og inkuber blandingen i 20 minutter ved 37 grader Celsius for at overtænge brønden. Brug en celletæller til at bestemme antallet af celler og tilsæt 40 mikroliter lacrimal kirtel stamcelle medium eller LGSCM med i alt 10.000 celler i 40 mikroliter af matrixgelen.Bland dem forsigtigt med en pipette. Brug en pipette til forsigtigt at tabe 80 mikroliter af blandingen over det forbelagte område i hver brønd på 24-brøndpladen. Inkuber blandingen i 20 minutter ved 37 grader Celsius og tilsæt 600 mikroliter LGSCM.Skift kulturmediet i hver brønd en gang hver anden dag. Efter syv dages kultur skal du kigge efter LGSC-kugler, der er 100 til 300 mikrometer i diameter under det omvendte mikroskop. Brug denne protokol til at isolere og dyrke primære lacrimal kirtel stamceller af Rosa26 og NOD mus.Efter syv dages kultur skal du fjerne kulturmediet fra kuglekulturen godt. Opdel LGSC-kuglerne ved inkubation i 20 mikroliter på 10 enheder pr. milliliter dispase og 100 mikroliter 10-millimolar PBS i 30 minutter ved 37 grader Celsius. Overfør suspensionen til et 15 ml centrifugerør og centrifuger ved 150 gange G i fire minutter.Fjern supernatanten. Behandl kuglerne med en milliliter 0,05% trypsin EDTA i fem minutter ved 37 grader Celsius Tilsæt en milliliter 0,05% trypsinhæmmer og pipette gentagne gange for at neutralisere trypsin og dissociere kuglerne i enkeltceller. Centrifuger ved 150 gange G i fem minutter, og fjern supernatanten for at pelletere LGSC'erne.Tilsæt en milliliter LGSCM for at resuspendere lacrimal kirtel stamcelle pellet og plade cellerne som tidligere demonstreret. Hvis du udfører procedure et, skal du forlænge LGSC'ernes kulturtid fra syv til 14 dage med lacrimal kirtel stamcellekultursystemet for tilfældig differentiering. Til procedure to ændres forholdet mellem matrixgelen og LGSCM fra 1: 1 til 1: 2 i begyndelsen af lacrimal kirtelstamcellekulturen til differentiering af duktalceller.Frø lacrimal kirtel stamceller i matrixen til induktion i 14 dage. Til procedure tre skal LGSCM efter passage erstattes med LGSCM 10% FBS til differentiering af acinarceller. Inducer differentiering i 14 dage.Efter en uges kultur blev Kr14 og Ki67 udtrykt i alle kugler dannet af lacrimal kirtel stamceller. Kuglerne nåede en diameter på 100 mikrometer. Hæmatoxylin og eosinfarvning viste cellularitet på dag syv.Berigelsesfaktorerne for lacrimal kirtel stamceller opnået efter syv dages primær kultur og subkultur indikerede, at cellerne beriget ved denne metode havde en stærk proliferativ evne. I dette system kunne lacrimal kirtel stamceller passeres over 40 gange og stadig opretholde stamcelleegenskaber. Lacrimal kirtel stamceller blev induceret til at danne flere knopper af føtal bovin serum og en lav andel af matrix gel.Hæmatoxylin- og eosinfarvning indikerede, at føtalt bovint serum kunne få kuglerne til at producere mere kaviterende strukturer. Efter ortopisk injektion af Rosa lacrimal kirtel stamceller i NOD mus, nye lacrimal lobules blev dannet ved siden af lacrimalkirtlerne. De fleste af lobulerne var sammensat af modne acinarceller med høj ekspression af AQP5, og der var intralobulær kanaldannelse med lav AQP5-ekspression.Mængden af tåresekretion på Rosa lacrimal kirtel stamceller injektionsside var højere end på kontrolsiden, men lavere end i vildtype mus Matrix gelen og dens relaterede blanding skal altid opbevares på is før brug, og mikrocentrifugerøret og spidserne i kontakt med matrix gel skal forkøles. Systemet giver en ideel model til yderligere undersøgelse af lacrimal kirtel stamceller, lacrimal kirtel reparation, og lægemiddel screening for lacrimal kirtel sygdomme.

Research

JoVE Journal

Biology

Chip-based Three-dimensional Cell Culture in Perfused Micro-bioreactors

We have developed a chip-based cell culture system for the three-dimensional cultivation of cells. The chip is typically manufactured from ...

Microfabrication of Chip-sized Scaffolds for Three-dimensional Cell cultivation

Using microfabrication technologies is a prerequisite to create scaffolds of reproducible geometry and constant quality for three-dimensional cell ...

Preparation of Pooled Human Platelet Lysate (pHPL) as an Efficient Supplement for Animal Serum-Free Human Stem Cell Cultures

Preparation of Pooled Human Platelet Lysate pHPL as an Efficient Supplement for Animal Serum-Free Human Stem Cell Cultures

Platelet derived growth factors have been shown to stimulate cell proliferation efficiently in vivo1,2 and in vitro. This effect has been reported for ...

Isolation and Animal Serum Free Expansion of Human Umbilical Cord Derived Mesenchymal Stromal Cells (MSCs) and Endothelial Colony Forming Progenitor Cells (ECFCs)

Isolation and Animal Serum Free Expansion of Human Umbilical Cord Derived Mesenchymal Stromal Cells MSCs and Endothelial Colony Forming Progenitor Cells ECFCs

The umbilical cord is a rich source for progenitor cells with high proliferative potential including mesenchymal stromal cells (also termed mesenchymal ...

Isolation of Mouse Salivary Gland Stem Cells

Mature salivary glands of both human and mouse origin comprise a minimum of five cell types, each of which facilitates the production and excretion of ...

Isolation of Mammary Epithelial Cells from Three-dimensional Mixed-cell Spheroid Co-culture

Isolering af brystepitelceller celler fra tre-dimensionel Blandet-celle klumpformet Co-kultur

While enormous efforts have gone into identifying signaling pathways and molecules involved in normal and malignant cell behaviors1-2, much of this work ...

Mouse Embryonic Development in a Serum-free Whole Embryo Culture System

Mus embryonale udvikling i et serum-frit Hele Embryo Culture System

Mid-gestation stage mouse embryos were cultured utilizing a serum-free culture medium prepared from commercially available stem cell media supplements in ...

Mouse Fetal Whole Intestine Culture System for Ex Vivo Manipulation of Signaling Pathways and Three-dimensional Live Imaging of Villus Development

Mouse Fetal Whole Intestine Culture System for Ex Vivo Manipulation of Signaling Pathways and Three-dimensional Live Imaging of Villus Development

Mus Føtal Hele Tarm Kultur System for<em&gt; Ex vivo</em&gt; Manipulation af signaleringsforløb og Tre-dimensionel Live-Imaging af Villus Udvikling

Most morphogenetic processes in the fetal intestine have been inferred from thin sections of fixed tissues, providing snapshots of changes over ...

Non-enzymatic, Serum-free Tissue Culture of Pre-invasive Breast Lesions for Spontaneous Generation of Mammospheres

Ikke-enzymatisk, Serumfrit Tissue Culture of Pre-invasive brystlæsioner til spontane generation af Mammospheres

Breast ductal carcinoma in situ (DCIS), by definition, is proliferation of neoplastic epithelial cells within the confines of the breast duct, without ...

Manipulating the Murine Lacrimal Gland

Manipulere Murine tårekirtlen

The lacrimal gland (LG) secretes aqueous tears necessary for maintaining the structure and function of the cornea, a transparent tissue essential for ...