Name: enrichment for chemoresistant ovarian cancer stem cells from human cell lines
Uploaded: 2014-09-10T15:00:00
Description: Watch this Scientific Journal Video about Enrichment for Chemoresistant Ovarian Cancer Stem Cells from Human Cell Lines at JoVE.com

Serene Samyesudhas and Dr. Lynn Roy assisted in preparing samples for filming.

1 Cell Culture och Fluorescerande märkning av äggstockscancer cellinjer <ol><li> Förbered SKOV3 media: McCoy-medium kompletterat med 10% fetalt bovint serum (FBS), 0,1 mM L-glutamin, 50 U / ml penicillin och 50 | ig / ml streptomycin. Bibehåll OVCA429 celler i minimalt essentiellt medium (MEM) kompletterat med 10% FBS, 1 mM natriumpyruvat, 0,1 mM L-glutamin, 50 U / ml penicillin och 50 | ig / ml streptomycin. </li><li> Föröka SKOV3 och OVCA429 cellinjer i en fuktad inkubator vid 37 ° C med 5% CO2. Od...

<ol>
	<li>Pennington, K., Pulaski, H., Pennington, M., Liu, J. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Too+Much+of+a+Good+Thing:+Suicide+Prevention+Promotes+Chemoresistance+in+Ovarian+Carcinoma.">Too Much of a Good Thing: Suicide Prevention Promotes Chemoresistance in Ovarian Carcinoma.</a> Curr Cancer Drug Targets. 10, 575-583 (2010).</li><li>Thigpen, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+rational+approach+to+the+management+of+recurrent+or+persistent+ovarian+carcinoma.">A rational approach to the management of recurrent or persistent ovarian carcinoma.</a> Clin Obstet Gynecol. 55, 114-130 (2012).</li><li>Burgos-Ojeda, D., Rueda, B. R., Buckanovich, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ovarian+cancer+stem+cell+markers:+prognostic+and+therapeutic+implications.">Ovarian cancer stem cell markers: prognostic and therapeutic implications.</a> Cancer letters. 322, 1-7 (2012).</li><li>Ma, L., Lai, D., Liu, T., Cheng, W., Guo, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cancer+stem-like+cells+can+be+isolated+with+drug+selection+in+human+ovarian+cancer+cell+line+SKOV3.">Cancer stem-like cells can be isolated with drug selection in human ovarian cancer cell line SKOV3.</a> Acta Biochim Biophys Sin (Shanghai). 42, 593-602 (2010).</li><li>Bonnet, D., Dick, J. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+acute+myeloid+leukemia+is+organized+as+a+hierarchy+that+originates+from+a+primitive+hematopoietic+cell.">Human acute myeloid leukemia is organized as a hierarchy that originates from a primitive hematopoietic cell.</a> Nature Medicine. 3, 730-737 (1997).</li><li>Alison, M. R., Lim, S. M., Nicholson, 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=Cancer+stem+cells:+problems+for+therapy.">Cancer stem cells: problems for therapy.</a> The Journal of pathology. 223, 147-161 (2011).</li><li>Luo, X., Dong, Z., Chen, Y., Yang, L., Lai, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Enrichment+of+ovarian+cancer+stem-like+cells+is+associated+with+epithelial+to+mesenchymal+transition+through+an+miRNA-activated+AKT+pathway.">Enrichment of ovarian cancer stem-like cells is associated with epithelial to mesenchymal transition through an miRNA-activated AKT pathway.</a> Cell proliferation. 46, 436-446 (2013).</li><li>Wang, L., Mezencev, R., Bowen, N. J., Matyunina, L. V., McDonald, J. F. <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+stem-like+cells+from+a+human+ovarian+cancer+cell+line.">Isolation and characterization of stem-like cells from a human ovarian cancer cell line.</a> Molecular and cellular biochemistry. 363, 257-268 (2012).</li><li>Abubaker, 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=Short-term+single+treatment+of+chemotherapy+results+in+the+enrichment+of+ovarian+cancer+stem+cell-like+cells+leading+to+an+increased+tumor+burden.">Short-term single treatment of chemotherapy results in the enrichment of ovarian cancer stem cell-like cells leading to an increased tumor burden.</a> Molecular cancer. 12, 24 (2013).</li><li>Conic, I., Dimov, I., Tasic-Dimov, D., Djordjevic, B., Stefanovic, V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ovarian+epithelial+cancer+stem+cells.">Ovarian epithelial cancer stem cells.</a> ScientificWorldJournal. 11, 1243-1269 (2011).</li><li>Liu, K. 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=Ovarian+cancer+stem-like+cells+show+induced+translineage-differentiation+capacity+and+are+suppressed+by+alkaline+phosphatase+inhibitor.">Ovarian cancer stem-like cells show induced translineage-differentiation capacity and are suppressed by alkaline phosphatase inhibitor.</a> Oncotarget. 4 (12), 2366-2382 (2013).</li><li>Liu, T., Cheng, W., Lai, D., Huang, Y., Guo, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Characterization+of+primary+ovarian+cancer+cells+in+different+culture+systems.">Characterization of primary ovarian cancer cells in different culture systems.</a> Oncology reports. 23, 1277-1284 (2010).</li></ol>

CSCs som är resistenta mot behandling kan vara ansvarig för återfall efter behandling av primärtumör. Karakterisering av CSCs kan leda till förbättrade behandlingsmetoder för äggstockscancer. De kritiska parametrarna i upprättandet av kemoterapiresistent CSCs använder ovanstående protokoll är tidslängden behandling med kemoterapi och koncentrationen av kemoterapi. Vid användning av protokollet i Ma et al. Det visade sig att efter 7 dagars behandling med cisplatin och paklitaxel, inga livsdugliga ...

Resistance to chemotherapy is a major impediment to the treatment and cure of cancer. Ovarian cancer is the 5th leading cause of cancer-related deaths among women in the United States (American Cancer Society Facts and Figures 2013). Patients initially respond well to chemotherapy, but most patients relapse1. After relapse patients are treated with a variety of additional chemotherapy agents with very little benefit2. General properties of CSCs include unlimited proliferative capabilities, retention of an undifferentiated state, resistance to drug treatment, efficient DNA repair, and ability to generate malignant tumor cells with different phenotypes3. CSCs frequently exhibit expression of stem cell genes such as Nanog, Oct4, Sox2, Nestin, CD133, and CD117. CSCs often express elevated levels of ABCG2, and ALDH genes that may contribute to drug efflux and metabolism3,4. 
The first definitive evidence for CSCs was demonstrated by isolating acute myeloid leukemia-initiating cells that were capable of self-renewal and tumor generation5. These leukemic stem cells expressed surface CD34 and generated leukemia in NOD/SCID (immunocompromised) mice5. Since then CSCs have been identified in many cancer types including leukemias/lymphomas, breast, bladder, colorectal, endometrial, sarcomas, hepatocellular carcinoma, melanomas, gliomas, ovarian, pancreatic, prostate, squamous cell carcinoma, and lung6. Therefore, being able to study this subtype of cancer cell is advantageous.
The goal of this study is to create a protocol for the selection and isolation of chemoresistant CSCs. Several methods have been reported for the isolation of CSCs from ovarian cancer cell lines. Non-adherent spheroids isolated from OVCAR-3, SKOV3, or HO8910 cultures demonstrate stem-like properties7,8. Isolation of CD133+ cells from OVCAR-3 cultures also yields CSCs. CSCs have also been selected in culture by treatment with chemotherapeutic agents. Treating tumor cell lines (OVCA433, Hey, and SKOV3 cells) with cisplatin and paclitaxel allows for the expansion and isolation of CSCs4,9. While culture of some cell types in CSC media leads to isolation of CSCs, SKOV3 cells did not survive culture in serum-free media or form sphere cells4. Therefore, treatment of cells with cisplatin and paclitaxel aided the expansion or isolation of this population4.
Using a modification of the procedure presented by Ma and colleagues4 we developed a method to isolate CSCs from the ovarian cancer cell lines. Our protocol is advantageous as it yields more viable cells while using less toxic chemotherapeutic agents. Cells are treated with cisplatin and subsequently grown in serum-free media supplemented with growth factors (stem cell media). We isolate the resulting non-adherent sphere cells and assay them for their expression of stem cell markers. This model enables the study of CSC properties and response to drug therapy.

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enrichment for chemoresistant ovarian cancer stem cells from human cell lines

Cancer stamceller (CSCS) definieras som en delmängd av långsam cykling och odifferentierade celler som delar sig asymmetriskt för att alstra starkt proliferativa, invasiva, och kemoterapiresistenta tumörceller. Därför CSCs är en attraktiv population av celler för att rikta terapeutiskt. CSCs förutspås att bidra till ett antal olika typer av maligniteter inklusive de i blod, hjärna, lungor, mag-tarmkanalen, prostata, och äggstock. Isolera och berika en tumörcellpopulation för CSCs kommer det möjligt för forskare att studera egenskaper, genetik, och terapeutisk respons CSCs. Vi genererade ett protokoll som reproducerbart berikar för äggstockscancer CSCs från äggstockscancercellinjer (SKOV3 och OVCA429). Cellinjer är behandlade med 20 ^ iM cisplatin för 3 dagar. Överlevande celler isoleras och odlas i ett serumfritt stamcellmedium innehållande cytokiner och tillväxtfaktorer. Vi visar en anrikning av dessa renade CSCs genom att analysera de isolerade celler för kNown stamcellsmarkörer Oct4, Nanog och Prom1 (CD133) och cellytan uttryck av CD177 och CD133. Den CSCs uppvisar ökad chemoresistance. Denna metod för isolering av CSCs är ett användbart verktyg för att studera rollen av CSCs i chemoresistance och tumör återfall.

För att visa att vi isolerade CSCs från äggstockscancer cellinjer med hjälp av cisplatinbehandling, först köpte vi bilder av cellinjer före behandling och efter valet. Vi använde ljusmikroskop för att ta bilder av vidhäftande (obehandlad) SKOV3 och OVCA429 celler och SKOV3 och OVCA429 CSCs (Figur 1). CSCs visas runt och inte är knutna till de vävnadsodlingsplattor (figur 1 och 2). Vi visar vidare att SKOV3-celler transducerade med RFP behåller sin fluoresce...

Watch this Scientific Journal Video about Enrichment for Chemoresistant Ovarian Cancer Stem Cells from Human Cell Lines at JoVE.com

Enrichment for Chemoresistant Ovarian Cancer Stem Cells from Human Cell Lines

Cancer stamceller (CSCs) påverkar tumör återfall på grund av chemoresistance. Vi har optimerat ett protokoll för urval och expansion av CSCs från äggstockscancer cellinjer. Genom att behandla celler med kemoterapeutiska cisplatin och odling i en stamcell främja mediernas vi berikar för icke-vidhäftande CSC kulturer.

Anrikning för kemoterapiresistent Ovarian cancerstamceller från humana cellinjer

Cancer stem cells (CSCs) are defined as a subset of slow cycling and undifferentiated cells that divide asymmetrically to generate highly proliferative, ...

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