Abstract
Human pluripotent stem cells (hPSCs) have great potential for use in regenerative medicine and cell replacement therapies; however, prior to clinical application, cultured cell populations need to be screened to ensure the quality of the culture, as well as the capacity of these pluripotent cells to differentiate into desired cell types. Flow cytometry, utilizing antibodies recognizing targets restricted to the hPSC surfaceome, offers an invaluable tool for high-throughput validation of hPSC lines. Here we describe the immunophenotyping of live human embryonic stem cell (hESC, H9) and human induced pluripotent stem cell (hiPSC, KB3) lines by flow cytometry using a panel of antibodies identified as either stem cell reference markers (CD90, EpCam) or reported as being prevalent or restricted (c-Kit, HPI-1, Integrin α6, Semaphorin-6A) to these cells. The protocols described here with hPSCs are also applicable to differentiated hPSC progeny and should be instrumental in the immunophenotyping and isolation of well-defined homogeneous cell populations useful in regenerative medicine.
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