Navigation Links
Prozac's target revealed

Researchers at Cold Spring Harbor Laboratory on Long Island have identified which among several different kinds of cells in the brain is the chief target of the widely prescribed antidepressant Prozac. This discovery might enable a new generation of more specific treatments for depression, with fewer side effects, to be developed.

The findings also lay the foundation for many studies of the factors that control how, when, and where new neurons are generated from stem cells in the brain. Such work could eventually lead to cell replacement therapies for neurodegenerative and other brain disorders including Alzheimer's and Parkinson's disease.

It has been known for some years that Prozac (fluoxetine) is likely to relieve the symptoms of depression by somehow causing more neurons to be present in a particular region of the brain (the "dentate gyrus"). But the origins of these neurons, and how Prozac promotes their existence, have been a mystery until now.

By profiling the telltale marker proteins produced by different kinds of cells in the brains of adult mice, the researchers first defined discrete steps in the complex process, called neurogenesis, that converts unspecialized stem cells into mature, specialized neurons.

Next, knowing that Prozac treatment somehow increases the number of neurons in the brain, the researchers tested which step in the neurogenesis pathway might be stimulated by Prozac. They found that Prozac treatment specifically stimulates the generation of a kind of cells they dubbed "amplifying neural progenitors" or ANPs--the second step in the neurogenesis pathway from stem cells to mature neurons. (Illustration available on request)

The study is published in the published in the Proceedings of the National Academy of Sciences (advance on-line this week, in print on May 23). It was led by Grigori Enikolopov and spearheaded by postdoctoral fellow Juan Manuel Encinas.

To address the controversy surroundin g the use of Prozac in children and in pregnant women, Enikolopov's group is currently testing the effects of the drug on brain neurogenesis in juvenile and pregnant mice. The results of those experiments may provide valuable information for assessing the possible effects of Prozac and related drugs on fetal and adolescent brain development.

The researchers are currently using the approach and tools they've developed to explore whether other treatments for depression--including other drugs and deep brain stimulation--act in the same way as Prozac or in different ways. In addition, the scientists are screening for new drugs that expand the production of brain neurons by stimulating ANP cells to multiply.

In collaboration with NASA researchers, experiments are also under way at Cold Spring Harbor Laboratory to assess how neurogenesis in the adult brain might be influenced by long-term, Mission-to-Mars levels of exposure to a particular kind of damaging radiation that's prevalent in space.


'"/>

Source:Cold Spring Harbor Laboratory


Related biology news :

1. New binding target for oncogenic viral protein
2. Ancient olfaction protein is shared by many bugs, offering new pest control target
3. A bacterial genome reveals new targets to combat infectious disease
4. Muscle-targeted gene therapy reverses rare muscular dystrophy in mice
5. Researchers identify target for cancer drugs
6. Study reveals candidate targets for anti-retroviral therapeutics
7. MUHC researchers make cancer target breakthrough
8. Future diabetes drugs may target new protein interaction
9. Smart drug targets deadly brain cancer
10. NHGRI targets 12 more organisms for genome sequencing
11. While on trail of dioxin, scientists pinpoint cancer target of green tea
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/13/2017)... March 13, 2017 Future of security: Biometric Face Matching ... ... DERMALOGs Face Matching enables to match face pictures against each ... to identify individuals. (PRNewsFoto/Dermalog Identification Systems) ... DERMALOG,s "Face Matching" is the fastest software for biometric Face Matching on ...
(Date:3/9/2017)... and MOUNTAIN VIEW, Calif. , ... Well Made Simple," and 23andMe , the leading ... better food choices.  Zipongo can now provide customers with ... preferences, health goals and biometrics, but also genetic markers ... choices. Zipongo,s personalized food decision support platform ...
(Date:3/7/2017)... LAKE CITY , March 7, 2017   ... that help top global companies identify the best talent, ... as Chief Sales Officer (CSO) and Diana ... Kucer,s appointments round out a seasoned executive team poised to ... and beyond, building on a year of record bookings ...
Breaking Biology News(10 mins):
(Date:3/29/2017)... Washington, PA (PRWEB) , ... March 29, 2017 ... ... largest non-profit, voluntary, health organization dedicated to finding cures for inflammatory bowel diseases ... healthcare professionals, have partnered to deliver exclusive content to ReachMD learners. , ...
(Date:3/29/2017)... Inc. (NASDAQ: VRML), a bio-analytical solutions company focused ... the fourth quarter and full year ended December ... year for us with our first clinical utility ... reimbursement progress with Medicare, positive medical policy coverage ... cleared our 2 nd generation product Overa ...
(Date:3/29/2017)... YORK , March 29, 2017 "Surging ... programs deployed by the government are expected to drive ... The gesture recognition market is expected to ... a CAGR of 29.63% between 2017 and 2022. The ... 15.27 billion by 2022, growing at a CAGR of ...
(Date:3/29/2017)... March 29, 2017 WuXi Biologics, a ... dedicated to biologics and a WuXi AppTec Affiliate, ... Asia-Pacific Best Bioprocessing Excellence Award from IMAPAC, a ... Awards aims to recognize outstanding leaders and trend-setters ... top bioprocessing and biomanufacturing experts in the industry, ...
Breaking Biology Technology: