Science : début de l'immortalité ? ou de l'immoralité ?

Commenter

La technologie décrite dans certains livres de SF pour se procurer une certaine forme d'immortalité est de plus en plus maitrisé.
Ci dessous l'abstract d'un travavil où un taureau est "ressucité" à partir d'un corps mort congelé pendant dix ans.

Reste juste cette petite question de la conservation de l'esprit et c'est bon.

Faudra aussi penser à régler quelques petits soucis de moralité, bioéthiques etc...





Citation:

PLoS ONE. 2009;4(1):e4142. Epub 2009 Jan 8.

Resurrection of a bull by cloning from organs frozen without cryoprotectant in a -80 degrees c freezer for a decade.

Hoshino Y, Hayashi N, Taniguchi S, Kobayashi N, Sakai K, Otani T, Iritani A, Saeki K.

Gifu Prefectural Livestock Research Institute, Takayama, Gifu, Japan.

Frozen animal tissues without cryoprotectant have been thought to be inappropriate for use as a nuclear donor for somatic cell nuclear transfer (SCNT). We report the cloning of a bull using cells retrieved from testicles that had been taken from a dead animal and frozen without cryoprotectant in a -80 degrees C freezer for 10 years. We obtained live cells from defrosted pieces of the spermatic cords of frozen testicles. The cells proliferated actively in culture and were apparently normal. We transferred 16 SCNT embryos from these cells into 16 synchronized recipient animals. We obtained five pregnancies and four cloned calves developed to term. Our results indicate that complete genome sets are maintained in mammalian organs even after long-term frozen-storage without cryoprotectant, and that live clones can be produced from the recovered cells.

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