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:4/26/2016)... , April 27, 2016 ... the  "Global Multi-modal Biometrics Market 2016-2020"  report to ... ) , The analysts forecast the ... CAGR of 15.49% during the period 2016-2020.  ... number of sectors such as the healthcare, BFSI, ...
(Date:4/13/2016)... April 13, 2016  IMPOWER physicians supporting Medicaid patients ... a new clinical standard in telehealth thanks to a ... the higi platform, IMPOWER patients can routinely track key ... body mass index, and, when they opt in, share ... visit to a local retail location at no cost. ...
(Date:3/22/2016)... March 22, 2016 ... Sensors Market for Consumer Industry by Type (Image, ... Application (Communication & IT, Entertainment, Home Appliances, ... Forecast to 2022", published by MarketsandMarkets, the ... to reach USD 26.76 Billion by 2022, ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... CLEVELAND , June 27, 2016  Global ... average 4.6 percent through 2020 to $7.2 billion.  ... (food and beverages, cleaning products, biofuel production, animal ... and biotechnology, diagnostics, and biocatalysts). Food and beverages ... gains driven by increasing consumption of products containing ...
(Date:6/27/2016)... (PRWEB) , ... June 27, 2016 , ... ... to bring innovative medical technologies, services and solutions to the healthcare market. The ... implementation of various distribution, manufacturing, sales and marketing strategies that are necessary to ...
(Date:6/24/2016)... , June 24, 2016 Epic Sciences ... detects cancers susceptible to PARP inhibitors by targeting ... cells (CTCs). The new test has already been ... in multiple cancer types. Over 230 ... damage response pathways, including PARP, ATM, ATR, DNA-PK ...
(Date:6/23/2016)... CAMBRIDGE, Mass. , June 23, 2016 /PRNewswire/ ... the development of novel compounds designed to target ... compound, napabucasin, has been granted Orphan Drug Designation ... in the treatment of gastric cancer, including gastroesophageal ... cancer stemness inhibitor designed to inhibit cancer stemness ...
Breaking Biology Technology:
Cached News: