Name: primary cell cultures from the mouse retinal pigment epithelium
Uploaded: 2018-03-16T13:30:00
Description: Watch this Scientific Journal Video about Primary Cell Cultures from the Mouse Retinal Pigment Epithelium at JoVE.com

Denne studien var delvis finansiert av BrightFocus stiftelsen (som DS).

Prosedyrer som involverer dyr fag er godkjent av institusjonelle Animal Care og bruk Committee (IACUC) ved University of Pittsburgh
1. klargjør løsninger
<ol><li>Forberede vekst medium ved supplere Dulbecco endret Eagle Medium (DMEM), høy glukose med 10% fosterets bovin serum (FBS), 1% penicillin/streptomycin, 2,5 L-glutamin og 1 x MEM unødvendige aminosyrer. Forvarm media i 37 ° C inkubator før bruk.</li>
	<li>Forbered 2% (wt/vol) dispase II arbeidsoppløsning:<ol>
<li>Forbered en lag...

<ol>
	<li>Mart&#237;nez-Morales, J. R., Rodrigo, I., Bovolenta, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Eye+development:+a+view+from+the+retina+pigmented+epithelium.">Eye development: a view from the retina pigmented epithelium.</a> Bioessays. 26, 766-777 (2004).</li><li>Lehmann, G. L., Benedicto, I., Philp, N. J., Rodriguez-Boulan, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Plasma+membrane+protein+polarity+and+trafficking+in+RPE+cells:+past,+present+and+future.">Plasma membrane protein polarity and trafficking in RPE cells: past, present and future.</a> Exp Eye Res. 126, 5-15 (2014).</li><li>Fronk, A. H., Vargis, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Methods+for+culturing+retinal+pigment+epithelial+cells:+a+review+of+current+protocols+and+future+recommendations.">Methods for culturing retinal pigment epithelial cells: a review of current protocols and future recommendations.</a> J Tissue Eng. 7, (2016).</li><li>Rizzolo, L. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Barrier+properties+of+cultured+retinal+pigment+epithelium.">Barrier properties of cultured retinal pigment epithelium.</a> Exp Eye Res. 126, 16-26 (2014).</li><li>Lu, F., Yan, D., Zhou, X., Hu, D. N., Qu, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Expression+of+melanin-related+genes+in+cultured+adult+human+retinal+pigment+epithelium+and+uveal+melanoma+cells.">Expression of melanin-related genes in cultured adult human retinal pigment epithelium and uveal melanoma cells.</a> Mol Vis. 13, 2066-2072 (2007).</li><li>Boulton, M. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Studying+melanin+and+lipofuscin+in+RPE+cell+culture+models.">Studying melanin and lipofuscin in RPE cell culture models.</a> Exp Eye Res. 126, 61-67 (2014).</li><li>Saini, J. S., Temple, S., Stern, J. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+Retinal+Pigment+Epithelium+Stem+Cell+(RPESC).">Human Retinal Pigment Epithelium Stem Cell (RPESC).</a> Adv Exp Med Biol. 854, 557-562 (2016).</li><li>Akrami, 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=Retinal+pigment+epithelium+culture;a+potential+source+of+retinal+stem+cells.">Retinal pigment epithelium culture;a potential source of retinal stem cells.</a> J Ophthalmic Vis Res. 4, 134-141 (2009).</li><li>Hu, J., Bok, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+use+of+cultured+human+fetal+retinal+pigment+epithelium+in+studies+of+the+classical+retinoid+visual+cycle+and+retinoid-based+disease+processes.">The use of cultured human fetal retinal pigment epithelium in studies of the classical retinoid visual cycle and retinoid-based disease processes.</a> Exp Eye Res. , 46-50 (2014).</li><li>Mazzoni, F., Safa, H., Finnemann, S. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Understanding+photoreceptor+outer+segment+phagocytosis:+use+and+utility+of+RPE+cells+in+culture.">Understanding photoreceptor outer segment phagocytosis: use and utility of RPE cells in culture.</a> Exp Eye Res. 126, 51-60 (2014).</li><li>Reichhart, N., Strauss, O. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ion+channels+and+transporters+of+the+retinal+pigment+epithelium.">Ion channels and transporters of the retinal pigment epithelium.</a> Exp Eye Res. 126, 27-37 (2014).</li><li>Valapala, 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=Lysosomal-mediated+waste+clearance+in+retinal+pigment+epithelial+cells+is+regulated+by+CRYBA1/&#946;A3/A1-crystallin+via+V-ATPase-MTORC1+signaling.">Lysosomal-mediated waste clearance in retinal pigment epithelial cells is regulated by CRYBA1/&#946;A3/A1-crystallin via V-ATPase-MTORC1 signaling.</a> Autophagy. 10, 480-496 (2014).</li><li>Shang, 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+amino+acid+transporter+SLC36A4+regulates+the+amino+acid+pool+in+retinal+pigmented+epithelial+cells+and+mediates+the+mechanistic+target+of+rapamycin,+complex+1+signaling.">The amino acid transporter SLC36A4 regulates the amino acid pool in retinal pigmented epithelial cells and mediates the mechanistic target of rapamycin, complex 1 signaling.</a> Aging Cell. , (2017).</li><li>Fernandez-Godino, R., Garland, D. L., Pierce, E. 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,+culture+and+characterization+of+primary+mouse+RPE+cells.">Isolation, culture and characterization of primary mouse RPE cells.</a> Nat Protoc. 11, 1206-1218 (2016).</li><li>Pfeffer, B. A., Philp, N. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cell+culture+of+retinal+pigment+epithelium:+Special+Issue.">Cell culture of retinal pigment epithelium: Special Issue.</a> Exp Eye Res. 126, 1-4 (2014).</li><li>Singh, S., Woerly, S., McLaughlin, B. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Natural+and+artificial+substrates+for+retinal+pigment+epithelial+monolayer+transplantation.">Natural and artificial substrates for retinal pigment epithelial monolayer transplantation.</a> Biomaterials. 22, 3337-3343 (2001).</li><li>Sonoda, 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+protocol+for+the+culture+and+differentiation+of+highly+polarized+human+retinal+pigment+epithelial+cells.">A protocol for the culture and differentiation of highly polarized human retinal pigment epithelial cells.</a> Nat Protoc. 4, 662-673 (2009).</li><li>Ho, T. C., Del Priore, L. V., Kaplan, H. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tissue+culture+of+retinal+pigment+epithelium+following+isolation+with+a+gelatin+matrix+technique.">Tissue culture of retinal pigment epithelium following isolation with a gelatin matrix technique.</a> Experimental eye research. 64, 133-139 (1997).</li><li>Toops, K. A., Tan, L. X., Lakkaraju, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+detailed+three-step+protocol+for+live+imaging+of+intracellular+traffic+in+polarized+primary+porcine+RPE+monolayers.">A detailed three-step protocol for live imaging of intracellular traffic in polarized primary porcine RPE monolayers.</a> Exp Eye Res. , 74-85 (2014).</li><li>Gibbs, D., Kitamoto, J., Williams, D. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Abnormal+phagocytosis+by+retinal+pigmented+epithelium+that+lacks+myosin+VIIa,+the+Usher+syndrome+1B+protein.">Abnormal phagocytosis by retinal pigmented epithelium that lacks myosin VIIa, the Usher syndrome 1B protein.</a> Proc Natl Acad Sci USA. 100, 6481-6486 (2003).</li><li>Gibbs, D., Williams, D. S. <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+culture+of+primary+mouse+retinal+pigmented+epithelial+cells.">Isolation and culture of primary mouse retinal pigmented epithelial cells.</a> Adv Exp Med Biol. 533, 347-352 (2003).</li><li>Pitk&#228;nen, L., Ranta, V. P., Moilanen, H., Urtti, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Permeability+of+retinal+pigment+epithelium:+effects+of+permeant+molecular+weight+and+lipophilicity.">Permeability of retinal pigment epithelium: effects of permeant molecular weight and lipophilicity.</a> Invest Ophthalmol Vis Sci. 46, 641-646 (2005).</li><li>Mao, Y., Finnemann, S. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Analysis+of+photoreceptor+outer+segment+phagocytosis+by+RPE+cells+in+culture.">Analysis of photoreceptor outer segment phagocytosis by RPE cells in culture.</a> Methods Mol Biol. 935, 285-295 (2013).</li></ol>

Presenteres detaljert protokollen kan pålitelig etablering av musen primære RPE kulturer som nå confluency etter 1 uke og presentere RPE hovedegenskapene som Sekskantet form og pigmentering etter 2 uker. Innhentet RPE cellene kan brukes til en rekke nedstrøms programmer som vitamin A metabolisme9, fagocytose photoreceptor ytre segmenter10 og ion transport11, tarmepitelet polaritet2lysosomale homeostase, og autophagy<sup cl...

Netthinnens pigment epitel (RPE) er en enkelt lag av polarisert epitelceller som ligger mellom neural netthinnen og akkord av øyet. Funksjonaliteten til RPE cellene og integriteten til den RPE monolayer er avgjørende for visjon fordi RPE spiller en stor rolle i flere prosesser som opprettholde ytre blod-retinal barrieren, vann og ioner mellom netthinnen og choroid, lys absorpsjon, beskyttelse mot oksidativt stress, kontroll av retinoid metabolisme og fagocytose av de ytre delene av fotoreseptorer1,2. Plasseringen av RPE på baksiden av øyet, samt barriere funksjonen forhindrer narkotika administrert systemisk fra passerer fra blodet til glasslegemet humor, gjør det vanskelig å studere kompleksiteten av RPE funksjonen i vivo. Derfor finnes det et stort behov for etablering av RPE cellekulturer å studere RPE cellene i en fleksibel, kontrollert miljø3,4.
Etablerte RPE cellen linjer finnes, gir en enkel og praktisk måte å skaffe og lagring i celler. men har passaged celler noen ulemper i forhold til primære celler2,3,4. Først, de er ofte preget av endringer i celle morfologi. For eksempel ble ingen av de eksisterende linjene funnet for å være egnet for en pålitelig studie av RPE barriereegenskaper tap av cellen polaritet fenotypen og delvis forsvinningen av tett veikryss4. I tillegg til tapet av polaritet og riktig celle til celle forbindelser mister RPE celle linjene raskt sin pigmentering på grunn av fravær av nøkkelen melanogenesis enzymer i voksen RPE5. Pigmentering kan gjenopprettes, men omfattende analyse av mekanismen av re-pigmentering som inkluderer en kombinasjon av overføring elektronmikroskop, gene expression analyse og kjemiske analyser å bekrefte tilstedeværelse av melanin har aldri vært utført6. En mer begrensning er at de RPE linjene har utvidet celle liv (noen ganger - udødelighet) og under visse betingelser kan forvandle selv fornyende multipotent stamceller som kobler substrat og skjemaet flytende kolonier7, 8. denne begrensningen gjør det umulig å bruke celle linjene for transplantasjon eksperimenter3.
Vurderer ulempene med de etablerte RPE linjene, primære RPE cellekulturer fra friskt vev kan tjene som mer biologisk relevante modell å studere i RPE. Primære RPE cellene har blitt brukt ikke bare å studere RPE-spesifikke funksjoner som vitamin A metabolisme9, fagocytose photoreceptor ytre segmenter10 og ion transportere11, men også å studere grunnleggende cellebiologi som epithelial celle polaritet2 og lysosomale homeostase autophagy12,13.
I de siste par årene har det vært en rekke publikasjoner om å etablere primære RPE kulturer, viser en økende interesse i dette området av forskning3,14,15. Flere protokoller for menneskelige RPE celler og ikke-menneskelige RPE celler som storfe og svin RPE celler ble publisert16,17,18,19. Men er det vanskeligere å håndtere musen RPE celler på grunn av deres mye mindre størrelse. Selv om ganske mange publikasjoner har beskrevet for å isolere RPE celler fra musen14,20,21, er det fortsatt mange forskere sliter med å isolere RPE celler uten forurensning av choroid celler eller celler fra neural netthinnen rusk. Her presenterer vi protokollen for å etablere hovedknappen på musen RPE cellekultur, inkludert å få øynene fra mus, Disseksjon av øynene og isolasjon av RPE ark til cellene for dyrking. Denne video protokollen ville være spesielt nyttig for forskerne som begynner å arbeide med musen primære RPE kulturer og trenger veiledning på disseksjon teknikker.

<table border="0" cellpadding="0" cellspacing="0" width="980">
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			<td height="20" style="height:20px;width:347px;">animals</td>
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			<td style="width:388px;"></td>
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		<tr height="20">
			<td height="20" style="height:20px;width:347px;">2~3-week old wildtype mice</td>
			<td style="width:123px;"></td>
			<td style="width:123px;"></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">Name</td>
			<td style="width:123px;">Company</td>
			<td style="width:123px;">Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">reagents</td>
			<td style="width:123px;"></td>
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			<td></td>
		</tr>
		<tr height="35">
			<td height="35" style="height:35px;width:347px;">Dulbecco&#39;s Modified Eagle&#39;s Medium (DMEM), high glucose</td>
			<td style="width:123px;">GIBCO</td>
			<td style="width:123px;">11965092</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">Dispase II</td>
			<td style="width:123px;">Sigma</td>
			<td style="width:123px;">D4693</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">Fetal Bovine Serum (FBS)</td>
			<td style="width:123px;">Sigma</td>
			<td style="width:123px;">F4135</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">Penicillin-Streptomycin (10,000 U/mL)</td>
			<td style="width:123px;">GIBCO</td>
			<td style="width:123px;">15140122</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">MEM Non-Essential Amino Acids Solution (100X)</td>
			<td style="width:123px;">GIBCO</td>
			<td style="width:123px;">11140050</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">Phosphate-buffered saline (PBS), 1X, pH 7.4</td>
			<td style="width:123px;">GIBCO</td>
			<td style="width:123px;">10010023</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">HEPES</td>
			<td style="width:123px;">Cellgro</td>
			<td style="width:123px;">61-034</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:347px;">KOH</td>
			<td style="width:123px;">Sigma-Aldrich</td>
			<td style="width:123px;">1310-58-3</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:347px;">NaCl</td>
			<td style="width:123px;">Ambion</td>
			<td style="width:123px;">AM9759</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:347px;">L-Glutamine (200 mM)</td>
			<td style="width:123px;">GIBCO</td>
			<td style="width:123px;">25030-081</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:347px;">Ethyl Alcohol</td>
			<td style="width:123px;">Fisher Scientific</td>
			<td style="width:123px;">111000200</td>
			<td></td>
		</tr>
		<tr height="37">
			<td height="37" style="height:38px;width:347px;">RPE65 antibody</td>
			<td style="width:123px;">A gift from Dr. Michael Redmond</td>
			<td style="width:123px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:347px;">Fluorescein Phalloidin&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</td>
			<td style="width:123px;">Invitrogen</td>
			<td style="width:123px;">F432</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:347px;">Goat anti-Rabbit IgG (H+L), Alexa Flour 568&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</td>
			<td style="width:123px;">Invitrogen</td>
			<td style="width:123px;">A11011&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:347px;">Goat serum</td>
			<td style="width:123px;">Sigma-Aldrich</td>
			<td style="width:123px;">G9023</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:347px;">DAPI</td>
			<td style="width:123px;">Invitrogen</td>
			<td style="width:123px;">D1306</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:347px;">Paraformaldehyde (PFA)</td>
			<td style="width:123px;">Polysciences, Inc</td>
			<td style="width:123px;">00380</td>
			<td></td>
		</tr>
		<tr height="37">
			<td height="37" style="height:38px;width:347px;">ZO-1 Polyclonal Antibody</td>
			<td style="width:123px;">ThermoFisher Scientific</td>
			<td style="width:123px;">40-2200</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">Name</td>
			<td style="width:123px;">Company</td>
			<td style="width:123px;">Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:347px;">instruments and equipments</td>
			<td style="width:123px;"></td>
			<td style="width:123px;"></td>
			<td></td>
		</tr>
		<tr height="34">
			<td height="34" style="height:34px;width:347px;">Laminar flow cabinet</td>
			<td style="width:123px;">Baker</td>
			<td style="width:123px;">SterilGARD SG403A</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">Dissecting microscope (Zoom stereomicroscope)</td>
			<td style="width:123px;">Nikon</td>
			<td style="width:123px;">SMZ1500</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">CO2 incubator with hot air sterilization</td>
			<td style="width:123px;">Binder</td>
			<td style="width:123px;">C150</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">Centrifuge</td>
			<td style="width:123px;">Eppendorf</td>
			<td style="width:123px;">5702</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:347px;">Petri dishes</td>
			<td style="width:123px;">Fisher Scientific</td>
			<td style="width:123px;">0875712</td>
			<td></td>
		</tr>
		<tr height="35">
			<td height="35" style="height:35px;width:347px;">12 mm Polyester Membrane Inserts Pre-Loaded in 12-Well Culture Plates, Pore Size: 0.4 &#181;m, Sterile</td>
			<td style="width:123px;">Corning Incorporated</td>
			<td style="width:123px;">COR-3460</td>
			<td></td>
		</tr>
		<tr height="35">
			<td height="35" style="height:35px;width:347px;">Westcott tenotomy scissors, std blades, sharp</td>
			<td style="width:123px;">STEPHENS instruments</td>
			<td style="width:123px;">S7-1320</td>
			<td></td>
		</tr>
		<tr height="35">
			<td height="35" style="height:35px;width:347px;">Castroviejo suturing forceps 0.12mm</td>
			<td style="width:123px;">Stroz Ophthalmic Instruments</td>
			<td style="width:123px;">E1796</td>
			<td></td>
		</tr>
		<tr height="35">
			<td height="35" style="height:35px;width:347px;">Crescent straight knife</td>
			<td style="width:123px;">Beaver-Visitec International</td>
			<td style="width:123px;">373808</td>
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			<td height="35" style="height:35px;width:347px;">Dumont Tweezers #5, 11 cm, Straight, 0.1x0.06 mm Tips, Dumostar</td>
			<td style="width:123px;">World Precision Instruments</td>
			<td style="width:123px;">500233</td>
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			<td height="35" style="height:35px;width:347px;">Vannas Scissors, 8 cm, 45&#176; Angle, Standard</td>
			<td style="width:123px;">World Precision Instruments</td>
			<td style="width:123px;">500260</td>
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			<td height="20" style="height:20px;width:347px;">Millex-GS Syringe Filter Unit, 0.22 &#181;m</td>
			<td style="width:123px;">Millipore</td>
			<td style="width:123px;">SLGL0250S</td>
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		<tr height="20">
			<td height="20" style="height:20px;width:347px;">Syringe, 5 mL</td>
			<td style="width:123px;">BD</td>
			<td style="width:123px;">309632</td>
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			<td height="20" style="height:20px;width:347px;">Inverted Laboratory Microscope&#160;Leica DM IL LED</td>
			<td style="width:123px;">&#160;Leica&#160;</td>
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		<tr height="21">
			<td height="21" style="height:21px;width:347px;">Pipette</td>
			<td style="width:123px;">Gilson</td>
			<td style="width:123px;"></td>
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		<tr height="21">
			<td height="21" style="height:21px;width:347px;">Barrier and non-filtered pipette tips</td>
			<td style="width:123px;">Thermo Scientific</td>
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primary cell cultures from the mouse retinal pigment epithelium

Netthinnens pigment epitel (RPE) er et svært polarisert multifunksjonelle epitel som ligger mellom neural netthinnen og akkord av øyet. Det er ett ark pigmentert celler som er hexagonally pakket og forbundet med stramme veikryss. Hovedfunksjonene til RPE inkluderer absorpsjon av lys, fagocytose skur photoreceptor ytre segmenter, romlig bufring av ioner, transport av næringsstoffer, ioner og vann i tillegg til aktiv deltakelse i visuelle syklus. Med slike viktige og ulike funksjoner er det kritisk viktig å studere biologi av RPE celler. RPE cellen linjer er etablert; men er passaged og udødeliggjort celler kjent for å raskt miste noen morfologiske og fysiologiske kjennetegner naturlig RPE celler. Dermed er primære celler mer egnet for å studere ulike aspekter av RPE cellebiologi og funksjon. Musen primære RPE cellekultur er svært nyttig for forskerne siden musen modeller er mye brukt i biologiske studier, men samle RPE celler fra musen er også svært utfordrende på grunn av sin lille størrelse. Her presenterer vi en protokoll for å etablere hovedknappen på musen RPE cellekulturer som inkluderer enucleation og Disseksjon av øynene og isolasjon av RPE ark til cellene for dyrking. Denne metoden gjør det mulig for effektiv celle utvinning. RPE cellene fra to mus kan nå confluency på en 12 mm polyester membran setter forhåndsinstallert i kultur plate etter en uke av kultur og vise noen av den opprinnelige egenskapene til bona fide RPE celler som Sekskantet form og pigmentering etter to uker kultur.

Musen primære RPE kulturen etablert fra 2 mus i 12 mm polyester membran sett inn når 90-95% confluency etter 1 uke i kultur. Etter 2 uker med kultur, cellene nådd 100% confluency og begynte å danne en mosaikk av cellene Sekskantet, pigmentert og bi-nucleated. 3 uker av kultur, cellene fortsatte å danne formen og pigmentering, men fikk etter 4 uker en del celler hyperpigmentert (figur 2).
Renhet...

Watch this Scientific Journal Video about Primary Cell Cultures from the Mouse Retinal Pigment Epithelium at JoVE.com

Primary Cell Cultures from the Mouse Retinal Pigment Epithelium

Netthinnens pigment epitel (RPE) er en multi-funksjonell epitel i øyet. Her presenterer vi en protokoll for å etablere primært cellekulturer fra murine RPE.

Primært cellekulturer fra musen netthinnens Pigment epitel

The retinal pigment epithelium (RPE) is a highly polarized multi-functional epithelium that is located between the neural retina and the choroid of the ...

The overall goal of this procedure is to demonstrate a feasible way to obtain retinal pigment epithelium cells from mouse eyes, and to culture them in vitro while retaining their original properties. This method will help RPE researchers to obtain dissection skills that are required for establishing of mouse RPE cell cultures, and to demonstrate how to do that in an easy way. The main advantage of this procedure is that it is simple and feasible.The only thing required is practice, and the visual demonstration of RPE isolation and the microscopy literally demonstrates how to obtain the required skills. To isolate the mouse eyeballs, first euthanize two mice using any approved method, and wearing gloves place it on an absorbent pad. Position a thumb and index finger around the eye and gently push the skin to bulge out the eyeball.Once the eyeball is protruded, tuck the tip of a pair of angled scissors between the skin and the eyeball and carefully cut the tissue around the eye until it is released. Then, briefly dip the isolated eye in the 70%ethanol and submerge it in PBS in a Petri dish. After collecting both eyes from each of the mice, proceed with the dissection.Under the dissecting microscope, carefully remove the majority of connective tissue from around the eye. It is not necessary to keep the eye submerged during this step. To do so, use suturing forceps to lift the connective tissues from the eyeball, and cut them out using Vannas scissors.Do not cut the sclera because it is practically impossible to obtain the intact posterior eye cups if the sclera gets cut. After cleaning off the connective tissue, submerge the eyeballs in PBS, and switch to working in a laminar flow cabinet under sterile conditions. Now, use forceps to transfer the eyes into a dish of warm DMEM containing a high concentration of glucose.After 20 to 30 seconds, replace the wash solution using aspiration for a second wash. Transfer eyeballs to warmed 2%Dispase II working solution in 15 mL tubes and let the eyes incubate at 37 degrees celsius for 45 minutes to dissociate. After the incubation, the eyeballs should be soft.Next, wash the eyes two times in the same vessel with warmed growth medium. After the second wash, replace the growth medium with fresh medium, and transfer the eyeballs and the medium to a new dish to continue the dissection. Continue working in a clean bench with the help of a dissection microscope.Start the dissection by securing the eye with forceps and make an incision around the ora serrata using Vannas scissors. Keeping the eyeball in the solution, carefully remove the anterior cornea by extending the cut around the ora serrata circumference. After completing the cut, pull off the anterior cornea.Next, remove the lens capsule and associated iris pigmented epithelium by gently pulling it out of the eye cup using toothed forceps. Then, repeat the dissection on the remaining eyes and incubate the posterior eye cups in growth medium for 20 minutes at 37 degrees celsius to facilitate separation of the neural retina from the RPE. After 20 minutes, cut the posterior eye cups into four petals.Make the cuts long enough to flatten the eye cup, but short enough to keep the petals connected. Next, flatten the eye cup to remove the neural retina. Secure the remaining RPE choroid sclera complex with the non-dominant hand and very gently tug away the retina from the edges.Once the neural retina is removed, transfer the quartered RPE choroid sclera complex into a new sterile culture dish filled with warm growth medium. In the Petri dish, secure one petal of the quartered RPE choroid sclera complex with super fine forceps, and using a microsurgical crescent knife, gently peel off the intact sheets of RPE from the underlying basement membrane. The brownish RPE should be clearly distinguishable from the dark, sticky, fluffy choroid.Then, wet a p200 micropipette tip with growth medium and use the tip to transfer the RPE sheets into the new dish containing warmed growth medium. Now, wash the RPE sheets three times in warmed growth medium. After each wash step, carefully collect the RPE sheets while avoiding other tissues, such as the debris from the retina or choroid.After the last wash, transfer the RPE sheets to a 1.5 mL tube, and allow them to sediment by gravity. Then, in the laminar flow cabinet remove the extra growth medium and re-suspend the cells in freshly made warm growth medium. Now, gently triturate the tissue using a p200 micropipette without making bubbles.Triturate between 40 and 50 times, just enough to make a single cell suspension. Be careful as too much trituration can be lethal. Now, plate the RPE cells collected from both mice in one 12 mL polyester membrane insert in the well of a 12 well culture plate.A high cell density is desired so that the RPE cells retain their hexagonal shape and pigmentation. A mouse primary RPE culture established from two mice in a 12 mm polyester membrane insert reached 90 to 95%confluency after one week in culture. After two weeks in culture, the cells were 100%confluent and started to form a mosaic of hexagonal pigmented and bi-nucleated cells.By week three, the cells continued to change in shape and pigmentation. However, after four weeks a portion of the cells became hyperpigmented. The purity of the primary RPE cell culture was assessed using the RPE65 antibody, which labels retinoid isomerohydrolase, an enzyme critical to the vertebrate visual cycle.The integrity of the cell to cell junctions and hexagonal cell shape was demonstrated by staining with phalloidin. Tight junctions were visualized by analysis of ZO-1 protein expression, which could be visualized using an amino stain and validated by western blotting. Overall, the cultures are able to proliferate, retain pigmentation and their hexagonal shape while forming tight junctions and expressing functional markers, such as RPE65.After watching this video, you should have a good understanding of how to isolate RPE cells from the mouse eyes and culture them properly in vitro. Once mastered, this technique can be done in three hours if it is performed properly. While attempting this procedure, it is important to remember to always keep the eyes wet and try to operate as fast as you can.

primary-cell-cultures-from-the-mouse-retinal-pigment-epithelium

Research

JoVE Journal

Biology

Primary Neuronal Cultures from the Brains of Late Stage Drosophila Pupae

In this video, we demonstrate the preparation of primary neuronal cultures from the brains of late stage Drosophila pupae. The procedure begins with the removal of brains from animals at 70-78 hrs after puparium formation. The isolated brains are shown after brief incubation in papain followed by several washes in serum-free growth medium. The process of mechanical dissociation of each brain in a 5 ul drop of media on a coverslip is illustrated. The axons and dendrites of the post-mitotic neurons are sheered off near the soma during dissociation but the neurons begin to regenerate processes within a few hours of plating. Images show live cultures at 2 days. Neurons continue to elaborate processes during the first week in culture. Specific neuronal populations can be identified in culture using GAL4 lines to drive tissue specific expression of fluorescent markers such as  GFP or RFP. Whole cell recordings have demonstrated the cultured neurons form functional, spontaneously active cholinergic and GABAergic synapses. A short video segment illustrates calcium dynamics in the cultured neurons using Fura-2 as a calcium indicator dye to monitor spontaneous calcium transients and nicotine evoked calcium responses in a dish of cultured neurons. These pupal brain cultures are a useful model system in which genetic and pharmacological tools can be used to identify intrinsic and extrinsic factors that influence formation and function of central synapses.

This video demonstrates the preparation of primary neuronal cultures from the brains of late stage Drosophila pupae. Views of live cultures show neurite outgrowth and imaging of calcium levels using Fura-2.

In this video, we demonstrate the preparation of primary neuronal cultures from the brains of late stage Drosophila pupae. The procedure begins with the ...

Primary Dissociated Midbrain Dopamine Cell Cultures from Rodent Neonates

The ability to create primary cell cultures of dopamine neurons allows for the study of the presynaptic characteristics of dopamine neurons in isolation from systemic input from elsewhere in the brain. In our lab, we use these neurons to assess dopamine release kinetics using carbon fiber amperometry, as well as expression levels of dopamine related genes and proteins using quantitative PCR and immunocytochemistry. In this video, we show you how we generate these cultures from rodent neonates.
The process involves several steps, including the plating of cortical glial astrocytes, the conditioning of neuronal cell culture media by the glial substrate, the dissection of the midbrain in neonates, the digestion, extraction and plating of dopamine neurons and the addition of neurotrophic factors to ensure cell survival.
The applications suitable for such a preparation include electrophysiology, immunocytochemistry, quantitative PCR, video microscopy (i.e., of real-time vesicular fusion with the plasma membrane), cell viability assays and other toxicological screens.

Primary dissociated midbrain dopamine cell cultures allow for the study of presynaptic characteristics of dopamine neurons. They can be used to monitor real-time dopamine release kinetics and protein/mRNA levels of regulators of dopamine exocytosis. Here, we show you how to generate these cultures from rodent neonates.

The ability to create primary cell cultures of dopamine neurons allows for the study of the presynaptic characteristics of dopamine neurons in isolation ...

The Preparation of Primary Hematopoietic Cell Cultures From Murine Bone Marrow for Electroporation

It is becoming increasingly apparent that electroporation is the most effective way to introduce plasmid DNA or siRNA into primary cells. The Gene Pulser MXcell  electroporation system and Gene Pulser  electroporation buffer were specifically developed to transfect nucleic acids into mammalian cells and difficult-to-transfect cells, such as primary and stem cells.This video demonstrates how to establish primary hematopoietic cell cultures from murine bone marrow, and then prepare them for electroporation in the MXcell system. We begin by isolating femur and tibia. Bone marrow from both femur and tibia are then harvested and cultures are established. Cultured bone marrow cells are then transfected and analyzed.

This procedure describes how to establish primary hematopoietic cell cultures from murine bone marrow and is followed by transfection using the Gene Pulser MXCell electroporation system.

It is becoming increasingly apparent that electroporation is the most effective way to introduce plasmid DNA or siRNA into primary cells. The Gene Pulser ...

Primary Cell Cultures from Drosophila Gastrula Embryos

Here we describe a method for preparing and culturing primary cells dissociated from Drosophila gastrula embryos. In brief, a large amount of staged embryos from young and healthy flies are collected, sterilized, and then physically dissociated into a single cell suspension using a glass homogenizer. After being plated on culture plates or chamber slides at an appropriate density in culture medium, these cells can further differentiate into several morphologically-distinct cell types, which can be identified by their specific cell markers. Furthermore, we present conditions for treating these cells with double stranded (ds) RNAs to elicit gene knockdown. Efficient RNAi in Drosophila primary cells is accomplished by simply bathing the cells in dsRNA-containing culture medium. The ability to carry out effective RNAi perturbation, together with other molecular, biochemical, cell imaging analyses, will allow a variety of questions to be answered in Drosophila primary cells, especially those related to differentiated muscle and neuronal cells.

Primary Cell Cultures from Drosophila Gastrula Embryos

We provide a detailed protocol for preparing primary cells dissociated from Drosophila embryos. The ability to carry out the effective RNAi perturbation, together with other molecular, biochemical and cell imaging methods will allow a variety of questions to be addressed in Drosophila primary cells.

Here we describe a method for preparing and culturing primary cells dissociated from Drosophila gastrula embryos.   In brief, a large amount of staged ...

MicroRNA Expression Profiles of Human iPS Cells, Retinal Pigment Epithelium Derived From iPS, and Fetal Retinal Pigment Epithelium

The objective of this report is to describe the protocols for comparing the microRNA (miRNA) profiles of human induced-pluripotent stem (iPS) cells, retinal pigment epithelium (RPE) derived from human iPS cells (iPS-RPE), and fetal RPE. The protocols include collection of RNA for analysis by microarray, and the analysis of microarray data to identify miRNAs that are differentially expressed among three cell types. The methods for culture of iPS cells and fetal RPE are explained. The protocol used for differentiation of RPE from human iPS is also described. The RNA extraction technique we describe was selected to allow maximal recovery of very small RNA for use in a miRNA microarray. Finally, cellular pathway and network analysis of microarray data is explained. These techniques will facilitate the comparison of the miRNA profiles of three different cell types.

The microRNA (miRNA) profiles of human induced-pluripotent stem (iPS) cells, retinal pigment epithelium (RPE) derived from human induced-pluripotent stem (iPS) cells (iPS-RPE), and fetal RPE, were compared.

MikroRNA uttrykk profiler av menneskelige iPS celler, retinal pigment epitelet avledet fra iPS, og Fetal Netthinne Pigment Epitel

The objective of this report is to describe the protocols for comparing the microRNA (miRNA) profiles of human induced-pluripotent stem (iPS) cells, ...

Efficient Dissection and Culture of Primary Mouse Retinal Pigment Epithelial Cells

Eye disorders affect millions of people worldwide, but the limited availability of human tissues hinders their study. Mouse models are powerful tools to understand the pathophysiology of ocular diseases because of their similarities with human anatomy and physiology. Alterations in the retinal pigment epithelium (RPE), including changes in morphology and function, are common features shared by many ocular disorders. However, successful isolation and culture of primary mouse RPE cells is very challenging. This paper is an updated audiovisual version of the protocol previously published by Fernandez-Godino et al. in 2016 to efficiently isolate and culture primary mouse RPE cells. This method is highly reproducible and results in robust cultures of highly polarized and pigmented RPE monolayers that can be maintained for several weeks on Transwells. This model opens new avenues for the study of the molecular and cellular mechanisms underlying eye diseases. Moreover, it provides a platform to test therapeutic approaches that can be used to treat important eye diseases with unmet medical needs, including inherited retinal disorders and macular degenerations.

This protocol, which was originally reported by Fernandez-Godino et al. in 20161, describes a method to efficiently isolate and culture mouse RPE cells, which form a functional and polarized RPE monolayer within one week on Transwell plates. The procedure takes approximately 3 hours.

Effektiv disseksjon og kultur av primære mus retinal pigment epitelceller

Eye disorders affect millions of people worldwide, but the limited availability of human tissues hinders their study. Mouse models are powerful tools to ...

Primary Culture of Porcine Retinal Pigment Epithelial Cells

The retinal pigment epithelium (RPE) is a monolayer of polarized pigmented epithelial cells, located between the choroid and neuroretina in the retina. Multiple functions, including phagocytosis, nutrient/metabolite transportation, vitamin A metabolism, etc., are conducted by the RPE on a daily basis. RPE cells are terminally differentiated epithelial cells with little or no regenerative capacity. Loss of RPE cells results in multiple eye diseases leading to visual impairment, such as age-related macular degeneration. Therefore, the establishment of an in vitro culture model of primary RPE cells, which more closely resembles the RPE in vivo than cell lines, is critical for the characteristic and mechanistic studies of RPE cells. Considering the fact that the source of human eyeballs is limited, we create a protocol to culture primary porcine RPE cells. By using this protocol, RPE cells can be easily dissociated from adult porcine eyeballs. Subsequently, these dissociated cells attach to culture dishes/inserts, proliferate to form a confluent monolayer, and quickly re-establish key features of epithelial tissue in vivo within 2 wks. By qRT-PCR, it is demonstrated that primary porcine RPE cells express multiple signature genes at comparable levels with native RPE tissue, while the expressions of most of these genes are lost/highly reduced in human RPE-like cells, ARPE-19. Moreover, the immunofluorescence staining shows the distribution of tight junction, tissue polarity, and cytoskeleton proteins, as well as the presence of RPE65, an isomerase critical for vitamin A metabolism, in cultured primary cells. Altogether, we have developed an easy-to-follow approach to culture primary porcine RPE cells with high purity and native RPE features, which could serve as a good model to understand RPE physiology, study cell toxicities, and facilitate drug screenings.

Here, an easy-to-follow method to culture primary porcine retinal pigment epithelial cells in vitro is presented.

Primær kultur av svin retinal pigment epitelceller

The retinal pigment epithelium (RPE) is a monolayer of polarized pigmented epithelial cells, located between the choroid and neuroretina in the retina. ...

Isolation of Primary Mouse Retinal Pigmented Epithelium Cells

The retinal pigmented epithelium (RPE) layer lies immediately behind the photoreceptors and harbors a complex metabolic system that plays several critical roles in maintaining the photoreceptors' function. Thus, the RPE structure and function are essential to sustain normal vision. This manuscript presents an established protocol for primary mouse RPE cell isolation. RPE isolation is a great tool to investigate the molecular mechanisms underlying RPE pathology in the different mouse models of ocular disorders. Furthermore, RPE isolation can help in comparing primary mouse RPE cells isolated from wild-type and genetically modified mice, as well as testing drugs that can accelerate the development of therapy for visual disorders. The manuscript presents a step-by-step RPE isolation protocol; the entire procedure, from enucleation to seeding, takes approximately 4 hours. The media shouldn't be changed for 5-7 days after seeding, to allow the growth of the isolated cells without disturbance. This process is followed by the characterization of morphology, pigmentation, and specific markers in the cells via immunofluorescence. Cells can be passaged a maximum of three or four times.

This manuscript describes a simplified protocol for the isolation of retinal pigmented epithelium (RPE) cells from mouse eyes in a stepwise manner. The protocol includes the enucleation and dissection of mouse eyes, followed by the isolation, seeding, and culturing of RPE cells.

Isolering av primære retinale retinale pigmenterte epitelceller

The retinal pigmented epithelium (RPE) layer lies immediately behind the photoreceptors and harbors a complex metabolic system that plays several critical ...

Efficient and Consistent Generation of Retinal Pigment Epithelium/Choroid Flatmounts from Human Eyes for Histological Analysis

The retinal pigment epithelium (RPE) and retina are functionally and structurally connected tissues that work together to regulate light perception and vision. Proteins on the RPE apical surface are tightly associated with proteins on the photoreceptor outer segment surface, making it difficult to consistently separate the RPE from the photoreceptors/retina. We developed a method to efficiently separate the retina from the RPE of human eyes to generate complete RPE/choroid and retina flatmounts for separate cellular analysis of the photoreceptors and RPE cells. An intravitreal injection of a high-osmolarity solution of D-mannitol, a sugar not transported by the RPE, induced the separation of the RPE and retina across the entire posterior chamber without causing damage to the RPE cell junctions. No RPE patches were observed attached to the retina. Phalloidin labeling of actin showed RPE shape preservation and allowed morphometric analysis of the entire epithelium. An artificial intelligence (AI)-based software was developed to accurately recognize and segment the RPE cell borders and quantify 30 different shape metrics. This dissection method is highly reproducible and can be easily extended to other animal models.

We describe a method to efficiently separate retinal pigment epithelium (RPE) from the retina in human eyes and generate whole RPE/choroid flatmounts for histological and morphometric analyses of the RPE.

Effektiv og konsistent generering av retinal pigmentepitel / choroid flatmounts fra Human Eyes for histologisk analyse

The retinal pigment epithelium (RPE) and retina are functionally and structurally connected tissues that work together to regulate light perception and ...

Staining of Sub-Retinal Pigment Epithelium (RPE) Deposits

To begin, dissolve Nile Red powder in acetone at three milligrams per milliliter concentration. Incubate the solution for 15 minutes at room temperature with periodic mixing. Filter the solution using a 0.22-micrometer filter once or twice depending on the amount of precipitate remaining in the solution.Then prepare the working solution by diluting the stock solution at a one-to-500 ratio in DPBS. Add 200 microliters of the working solution to the paraformaldehyde-fixed RPE cells and incubate for 30 minutes at room temperature on a shaker protecting from light. After incubation, wash the samples twice with DPBS, then add 200 microliters of DPBS, and store them at four degrees Celsius.For BODIPY staining, prepare a 3.8-millimolar stock concentration by dissolving BODIPY in anhydrous DMSO. Then prepare the working solution by diluting the stock solution at a one-to-300 ratio in DPBS. Add 200 microliters of the working solution of BODIPY to paraformaldehyde-fixed RPE cells and incubate overnight on a rocker at room temperature.The next day, wash the cells twice with DPBS and add 200 microliters of DPBS before storing them at four degrees Celsius. For APOE immunostaining, prepare a buffer solution by combining DPBS with 1%BSA, 0.5%Tween 20, and 0.5%Triton X-100. Block and permeabilize the paraformaldehyde-fixed RPE cells in 200 microliters of buffer solution for one hour.After incubation, add APPLE primary antibody diluted at one-to-100 in the buffer solution and incubate overnight at room temperature. The following day, wash the samples twice with DPBS. Then add 200 microliters of secondary antibody solution diluted at one-to-1000 for one hour at room temperature.After incubation, wash the cells twice with DPBS and add 200 microliters of DPBS before storing them at four degrees Celsius.