HOME >> BIOLOGY >> NEWS
Self-correcting embryos could be an ethically acceptable source of embryonic stem cells

normalised cultures, and more are being developed. So far no stem cells from completely abnormal embryos have been developed.

Although the mechanism by which the embryos self-corrected their abnormalities was not clear, Dr Munn believed that it probably happened when a trisomic embryo (one with three of a particular chromosome instead of the usual two) lost the third chromosome somewhere between the time that the fertilised egg first started to divide and the blastocyst stage. "However, not all the embryos were trisomic. Some had other abnormalities, namely chaotic mosaics, with all the cells abnormal but each one different from the others. These did not produce stem cells," said Dr Munn. "It is impossible to tell at this stage which embryos are capable of self-correcting and which are not."

Dr Munn's findings offer researchers an opportunity to research early embryonic development and stem cells without embryos needing to be specially created for the purpose. The embryos he used would have been discarded by couples seeking fertility treatment, after PGD showed that there were abnormalities that meant the embryos would either fail to implant, or spontaneously abort at some point in the pregnancy, or would result in the birth of a child with one of the defects that the couple were trying to avoid by having PGD in the first place.

"The use of human embryos or their purposeful creation for stem cell research has been controversial, and a ban on research using government funds has been in effect in the USA since 2001. These findings offer scientists the chance to continue their research in this important field, without having to create embryos especially for the purpose," said Dr Munn.


'"/>

Contact: Mary Rice
mary@mrcommunication.org
European Society for Human Reproduction and Embryology
20-Jun-2005


Page: 1 2

Related biology news :

1. Germanys embryo protection law is killing embryos rather than protecting them
2. Time-lapse recordings reveal why IVF embryos are more likely to develop into twins
3. Study: Donated embryos could result in more than 2,000 new embryonic stem cell lines
4. Changes in chromosomal constitution of preimplantation embryos suggest caution in genetic screening
5. Cold Spring Harbor Protocols features methods to understand embryos, clones, stem cells
6. Many couples choose to donate surplus embryos for stem cell research
7. In early embryos, cilia get the message across
8. Successful transplantation from pig embryos to mice
9. How IVF could be causing genetic errors in embryos
10. Researchers report technique for freezing and preserving genetically enhanced pig embryos
11. Forsyth scientists gain greater understanding of how embryos differentiate left from right

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/22/2016)... -- On Monday, the Department of Homeland Security (DHS) ... for the Biometric Exit Program. The Request for Information ... explains that CBP intends to add biometrics to confirm ... States , in order to deter visa overstays, ... Logo - http://photos.prnewswire.com/prnh/20160622/382209LOGO ...
(Date:6/16/2016)... The global Biometric ... USD 1.83 billion by 2024, according to a ... proliferation and increasing demand in commercial buildings, consumer ... the market growth.      (Logo: ... of advanced multimodal techniques for biometric authentication and ...
(Date:6/9/2016)... Paris Police Prefecture ... solution to ensure the safety of people and operations in ... major tournament Teleste, an international technology group specialised ... today that its video security solution will be utilised by ... public safety across the country. The system roll-out is scheduled ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... June 24, 2016 , ... While the majority of commercial spectrophotometers ... 5000 and the 6000i models are higher end machines that use the more unconventional ... spectrophotometer’s light beam from the bottom of the cuvette holder. , FireflySci has ...
(Date:6/23/2016)... TORONTO , June 23, 2016 /PRNewswire/ - ... Ontario biotechnology company, Propellon ... the development and commercialization of a portfolio of ... cancers. Epigenetic targets such as WDR5 represent an ... contribute significantly in precision medicine for cancer patients. ...
(Date:6/23/2016)... , June, 23, 2016  The Biodesign Challenge (BDC), ... new ways to harness living systems and biotechnology, announced ... (MoMA) in New York City . ... participating students, showcased projects at MoMA,s Celeste Bartos Theater ... Antonelli , MoMA,s senior curator of architecture and design, ...
(Date:6/23/2016)... LOUISVILLE, Ky. , June 23, 2016 /PRNewswire/ ... from two Phase 1 clinical trials of its ... double-blind, placebo-controlled, single and multiple ascending dose studies ... and pharmacodynamics (PD) of subcutaneous injection in healthy ... APL-2 subcutaneously (SC) either as a single dose ...
Breaking Biology Technology:
Cached News: