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2 years ago in Biology , Stem Cell Biology By Rachna M
How can side populations of stem cells be enriched and maintained in culture?
The "Side Population" (SP) phenotype, identified by Hoechst dye efflux via ABC transporters, is associated with stem/progenitor cells. This technical question requires a protocol outline. The answer should detail the steps: cell staining, fluorescence-activated cell sorting (FACS) to isolate the SP fraction, and subsequent culture conditions using specific media and matrices to maintain their undifferentiated state.
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By Madhu B Answered 1 year ago
Side populations (SP) of stem cells, identified by dye efflux properties, are often scarce and lose stemness during culture. Enrichment requires optimized flow cytometry sorting, selective media, and growth factor supplementation. Techniques include Hoechst dye staining with verapamil inhibition and low oxygen tension culture to maintain pluripotency. Monitoring differentiation markers ensures stemness is preserved. Understanding these methods allows researchers to study stem cell biology, regenerative medicine applications, and cellular therapies while overcoming challenges of isolation and long-term maintenance.
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