An RNA tool kit to study the status of mouse ES cells: Sex determination and stemness
2013
Jay, F. | Ciaudo, C.
Mouse embryonic stem cells (mESCs) are pluripotent stem cells derived from the inner cell mass of the blastocyst. They can be maintained under controlled culture conditions in a pluripotent state, or be induced to differentiate into all derivatives of the three primary germ layers: ectoderm, endoderm and mesoderm. Several studies have characterised the coding and non-coding (nc) RNA repertoires of mESCs, uncovering highly dynamic variations during the process of differentiation, but also qualitative differences pertaining to sex. For example, up-regulation of the long non-coding RNA Xist on the X chromosome induces gene silencing and X inactivation exclusively during female mESC differentiation. In contrast, specific small RNAs have been shown to be up-regulated during male mESC differentiation. Here, we illustrate how a small set of key coding and ncRNAs can be exploited as dynamic and sensitive markers of the stemness and/or the differentiation status of male or female mESC lines. We describe adapted techniques for the extended characterization and analysis of mESCs from as little material as that cultured in a single 75cm2 flask.
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