Stem Cells

Genetics as it applies to evolution, molecular biology, and medical aspects.

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ngfok
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Stem Cells

Post by ngfok » Sun Apr 02, 2006 3:59 pm

Why does using embyronic stem cells results in the destruction of the embryo?

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Poison
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Post by Poison » Sun Apr 02, 2006 5:04 pm

How to use stem cells without killing?
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LilKim
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Post by LilKim » Sun Apr 02, 2006 6:25 pm

embryonic stem cells are created by "dissociating" the cell of VERY early embryo to establish a cell culture... once the cells are dissociated.. they cannot re-associate... and thus the original embry is destroyed

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Post by atypical10 » Mon Jun 05, 2006 11:49 pm

Yes it does, potential fetuses are thought as cures for MS. To prevent the embryo from being destroyed they could use blood from the babies umbillical cord after birth.

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LilKim
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Post by LilKim » Tue Jun 06, 2006 5:03 am

Stem cells derived from umbilical blood are not totipotent (they cannot differentiate into ALL cell types found in the body) THey are merely pluripotent ...

the only way to get totipotent stem cells (the ones needed for stem cell research) is by dissociating early embryos.

check this site for definitions: http://en.wikipedia.org/wiki/Totipotent

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victor
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Post by victor » Tue Jun 06, 2006 6:20 am

Why killing? because an embryo is consist of blastocoel, inner cell mass and throphoblasts...the cecll which is used for stem cecll is the inner cell mass, so, we've to take out the inner cell mass out from throphoblasts.
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