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. Zellkultur und Fluoreszenzmarkierung von Eierstockkrebszelllinien <ol><li> Vorbereitung SKOV3 Medien: McCoy Medium mit 10% fötalem Rinderserum (FBS) ergänzt, 0,1 mM L-Glutamin, 50 U / ml Penicillin und 50 ug / ml Streptomycin. Aufrechterhaltung OVCA429 Zellen in minimalem essentiellen Medium (MEM) mit 10% FBS, 1 mM Natriumpyruvat, 0,1 mM L-Glutamin, 50 U / ml Penicillin und 50 ug / ml Streptomycin. </li><li> Ausbreiten SKOV3 und OVCA429 Zelllinien in einem befeuchteten Inkubator bei 37 ° C mit 5% CO 2.</sub...

<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, die therapieresistent sind, können nach der Behandlung des Primärtumors verantwortlich für den Rückfall sein. Charakterisierung von CSCs zu verbesserten Therapien für Eierstockkrebs führen. Die kritischen Parameter in der Einrichtung chemoresistentem KSZ Verwendung des obigen Protokolls sind Zeit die Länge der Behandlung mit Chemotherapie und die Konzentration der Chemotherapie. Wenn unter Verwendung des Protokolls in Ma et al. es wurde festgestellt, daß nach 7 Tagen der Behandlung mit Cisplatin u...

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

Krebsstammzellen (CSCs) als Teilmenge von langsamen Radfahren und undifferenzierte Zellen, die asymmetrisch zu teilen, um hoch proliferativen, invasive erzeugen und chemoresistenten Tumorzellen definiert. Daher sind KSZ eine attraktive Population von Zellen therapeutisch zu zielen. KSZ wird vorhergesagt, zu einer Anzahl von Arten von Malignitäten einschließlich derjenigen im Blut, Gehirn, Lunge, Magen, Darm, Prostata und des Eierstocks bei. Isolierung und Anreicherung einer Tumorzellpopulation für CSCs ermöglichen es den Forschern, die Eigenschaften, Genetik und therapeutische Reaktion von CSCs studieren. Wir erzielten ein Protokoll, das reproduzierbar bereichert für Eierstockkrebs Eierstockkrebs von CSCs Zelllinien (SKOV3 und OVCA429). Zelllinien werden mit 20 uM Cisplatin für 3 Tage behandelt. Überlebende Zellen werden isoliert und kultiviert in serumfreiem Medium, das Stammzell Zytokinen und Wachstumsfaktoren. Wir zeigen eine Anreicherung dieser gereinigten CSCs durch die Analyse der isolierten Zellen für known Stammzellmarker Oct4, Nanog und PROM1 (CD133) und Zelloberflächenexpression von CD177 und CD133. Die CSCs eine erhöhte Chemoresistenz. Diese Methode zur Isolierung von CSCs ist ein nützliches Werkzeug für die Untersuchung der Rolle von CSCs in Chemoresistenz und Tumorrückfall.

Um zu zeigen, dass wir isoliert KSZ von epithelialen Eierstockkrebszelllinien unter Verwendung von Cisplatin-Behandlung wir zunächst aufgenommenen Bildern der Zelllinien vor der Behandlung und nach der Selektion. Wir haben die Lichtmikroskopie, um Bilder von adhärenten (unbehandelt) und SKOV3 OVCA429 Zellen und SKOV3 und OVCA429 CSCs (Abbildung 1) zu erfassen. CSCs rund und nicht erscheinen, um die Gewebekulturplatten befestigt (Abbildungen 1 und 2). Wir zeigen weiter...

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

Krebsstammzellen (CSCs) in Tumorrückfall durch Chemoresistenz beteiligt ist. Wir haben ein Protokoll für die Auswahl und den Ausbau von CSCs von Eierstock-Krebszelllinien optimiert. Durch die Behandlung mit dem Chemo Zellen Cisplatin und Kultivierung in einer Stammzelle Förderung der Medien bereichern wir für nicht haft CSC Kulturen.

Bereicherung für chemoresistenten Eierstockkrebs Stammzellen aus menschlichen Zelllinien

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