Navigation Links
Researchers pinpoint key stem cells for eating and sex

WASHINGTON New research, published in the journal Development, by Dr. Anthony-Samuel LaMantia, professor of Pharmacology & Physiology and director of the newly formed GW Institute for Neuroscience, and his colleagues have identified the stem cells that generate three critical classes of nerve cells olfactory receptors (ORNs), vomeronasal (VRNs) and gonadotropin releasing hormone (GnRH) neurons that are responsible for enabling animals and humans, to eat, interact socially and reproduce.

This research is the first evidence identfying these stem cells. By studying mice at the earliest stages of embryonic development, LaMantia and his colleagues were able to identify the location of these cells, confirm that they divide slowly and symmetricallythus making more stem cells, have a distinct molecular identity, and give rise to all cell types in the tissueincluding ORNs, VRNs and GnRH neurons. These embryonic olfactory stem cells also are ultimately responsible for generating stem cells that remain in the lining of the nose throughout life and make new ORNs and VRNs. Thus these stem cells are also essential to enable a rare example of nervous system regeneration that continues throughout life.

"By identifying these stems cells, our research will help physicians understand why people have certain genetic, neurological, and mental disabilities. Olfaction is often compromised early in the course of a number of serious diseases including autism, schizophrenia, and Alzheimer's disease, and GnRH deficiency is important in many cases of infertility. It is my hope that in the future, we will combine this sort of cell and molecular biology with clinical practice to develop better treatments for patients with these disorders," said Dr. LaMantia.

To identify the early olfactory stem cell, Dr. LaMantia and his colleagues used multiple methods to define the identity and potential of dividing cells in the embryonic tissue that eventually becomes the nasal epitheliumthe sheet of nerve cells that lines the nasal cavity. The researchers studied these tissues using molecular markers to distinguish different classes of cells and recombinant DNA technology as well as mutant mice to assess how several key genes define olfactory stem cell identity. They found a subset of cells that divide slowly and symmetricallysuggesting that these were indeed, the stem cells. They also showed that these cells were self renewinganother essential characteristic of stem cells. They defined several molecules that influence whether these stem cells remain as stem cells or divide terminally to make olfactory, vomeronasal and GnRH neurons. Finally, they showed that these stem cells uniquely give rise to ORNs, VRNs, and GnRH neurons.


Contact: Anne Banner
George Washington University Medical Center

Related medicine news :

1. BUSPH researchers link widely used chemicals to ADHD in children
2. Researchers Use Ecstasy to Treat PTSD
3. UC San Diego researchers find cause of metabolic disease -- and possible cure
4. Researchers cut years from drug development with nanoscopic bead technology
5. Researchers study relationship of oral cancers and periodontal disease
6. HIV care providers and researchers applaud release of national HIV/AIDS strategy
7. Researchers envision better disease surveillance to improve public health
8. U-M researchers identify gene mutation that causes rare form of deafness
9. MIT researchers find that Sirtuin1 may boost memory and learning ability
10. Researchers identify factors behind blood-making stem cells
11. Parkinsons Transplant Mystery Solved, Researchers Say
Post Your Comments:
(Date:12/1/2015)... ... December 01, 2015 , ... TCS Healthcare Technologies (TCS), ... population health arenas, is pleased to announce that VIP Care Services, a Caprock ... implemented the ACUITY Complete Care™ Management to back their collaborative catastrophic case management ...
(Date:12/1/2015)... (PRWEB) , ... December 01, 2015 , ... Nurotron Biotechnology ... in its largest order to date. , The order will be from the ... Nurotron’s Venus Cochlear Implant System is an effective solution for children and adults suffering ...
(Date:11/30/2015)... (PRWEB) , ... November 30, 2015 , ... ... Amanda Beard and Brooke Bennett are collaborating with brands across various categories through ... four influential figures make up an elite group of Gold Medal Moms who ...
(Date:11/30/2015)... Garden City, NY (PRWEB) , ... December 01, ... ... (NAPW) honors Dale Jones as a 2015-2016 inductee into its ... for leadership in education. NAPW is the nation’s leading networking organization exclusively for ...
(Date:11/30/2015)... VA (PRWEB) , ... November 30, 2015 , ... ... Research Foundation (Meso Foundation) released information for caregivers and held two webinars on ... are available on demand free of charge at . , With ...
Breaking Medicine News(10 mins):
(Date:11/30/2015)... Nov. 30, 2015  The fee-for-service reimbursement ... U.S. medical imaging is on its way ... care payer-provider contracts are set to phase ... wake, alter provider-vendor relationships. The shift to ... forward new purchasing frameworks in the medical ...
(Date:11/30/2015)... WOODCLIFF LAKE, N.J. and SAN ... Inc. and Arena Pharmaceuticals, Inc. (NASDAQ: ARNA ) ... (FDA) has accepted for filing the New Drug Application ... approved, the extended release formulation will offer patients a ... ® ) is currently approved as ...
(Date:11/30/2015)... and ST. LOUIS , Nov. ... (NASDAQ: ESRX ) today announced an early renewal ... which began in 1999, will now extend through at ... --> After evaluating pharmacy benefit manager capabilities during ... Express Scripts continues to offer the best health plan ...
Breaking Medicine Technology: