Cientistas criam embrião usando célula humana adulta .Feito é inédito no meio científico, mas células-tronco resultantes da experiência não servem para tratamentos de doenças.
Autor: Desvendando celulas tronco | Publicado: 2011-10-10T18:38:00-07:00

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Cientistas americanos anunciaram um feito inédito. Eles reprogramaram uma célula humana adulta para criar um embrião em um estágio inicial. Com isso, conseguiram células-tronco embrionárias, que têm supostamente a capacidade de se transformar em vários tecidos do corpo.
Mas o estudo, publicado nesta quarta-feira (05) na revista Nature, revela um obstáculo considerado grande pelos próprios pesquisadores: as células-tronco resultantes da experiência são anormais. Elas têm mais material genético do que uma célula humana comum, por isso não servem no tratamento de doenças ou na clonagem de um ser humano.

Mesmo assim, os cientistas acham que a experiência poderá ajudar a desenvolver uma técnica que permita a clonagem de células-tronco personalizadas para cada paciente.
&nbsp;( Portal G1)