Self-regulation ethics

Embryonic stem cells (ESCs) are cells isolated from the inner mass of blastocysts." The mechanisms by which ESCs maintain self-renewal and pluripotency are still not yet fully understood. Many reports highlight the involvement of miRNAs as crucial players in ESCs regulation and ESCs development. In fact ESCs lose their self-renewal differentiation capacity, following alterations in the machineiy involved in miRNAs processing, maintenance and activity. Potential clinical applications of ES cells raise many practical and ethical concerns. Many nations currently have moratoria on either ES cell research or the production of new ES cell lines. Because of their combined abilities of unlimited expansion and pluripotency, embiyonic stem cells remain a theoretically potential source for regenerative medicine and tissue replacement after injuiy or disease. 

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