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- W2126800860 abstract "Spontaneous differentiation of human embryonic stem cell (hESC) cultures is a major concern in stem cell research. Physical removal of differentiated areas in a stem cell colony is the current approach used to keep the cultures in a pluripotent state for a prolonged period of time. All hESCs available for research require unidentified soluble factors secreted from feeder layers to maintain the undifferentiated state and pluripotency. Under experimental conditions, stem cells are grown on various matrices, the most commonly used being Matrigel.We propose an alternative method to prevent spontaneous differentiation of hESCs grown on Matrigel that uses low amounts of recombinant noggin. We make use of the porosity of Matrigel to serve as a matrix that traps noggin and gradually releases it into the culture to antagonize bone morphogenetic proteins (BMP). BMPs are known to initiate differentiation of hESCs and are either present in the conditioned medium or are secreted by hESCs themselves.hESCs grown on Matrigel supplemented with noggin in conditioned medium from feeder layers (irradiated mouse embryonic fibroblasts) retained both normal karyotype and markers of hESC pluripotency for 14 days. In addition, these cultures were found to have increased cell proliferation of stem cells as compared to hESCs grown on Matrigel alone.Noggin can be utilized for short term prevention of spontaneous differentiation of stem cells grown on Matrigel." @default.
- W2126800860 created "2016-06-24" @default.
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- W2126800860 date "2009-08-01" @default.
- W2126800860 modified "2023-10-16" @default.
- W2126800860 title "Noggin maintains pluripotency of human embryonic stem cells grown on Matrigel" @default.
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- W2126800860 doi "https://doi.org/10.1111/j.1365-2184.2009.00616.x" @default.
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