Navigation Links
'Nurse cells' make life and death decisions for infection-fighting cells

"Nurse cells" play an important role in deciding which developing infection-fighting cells, called T cells, live and which die, according to research funded by the National Science Foundation (NSF) and reported in the June issue of the journal Experimental Biology and Medicine.

The infection-fighting cells, known as thymocytes or T cells, live in the thymus, an organ in the upper portion of the chest. Loss of the thymus results in severe immunodeficiency and increased susceptibility to infection. The function of T cells produced by the thymus is to recognize harmful invaders. Once invaders have been identified, T cells then attempt to eliminate disease-infected cells.

"In early studies, it was suggested that thymic nurse cells only removed non-functional thymocytes," said Eve Barak, program director in NSF's Division of Molecular and Cellular Biology. "This research shows that nurse cells are performing a much bigger role in the thymus than we thought."

Thymic nurse cells were given their name because of their close relationship with thymocytes. These nurse cells have been reported to take up as many as 50 destined-to-die thymocytes into their own cell bodies.

Thymic nurse cells were discovered in 1980. Their existence was debated because many scientists found it difficult to believe that a cell could internalize another cell, said Jerry Guyden, a biologist at the City College of New York and lead researcher.

The thymus is present in most vertebrates, with a similar structure and function as the human thymus. Animal thymic tissue sold in butcher shops or at meat counters is known as sweetbread.
'"/>

Source:National Science Foundation


Page: 1

Related biology news :

1. Two chemicals boost immune cells ability to fight HIV without gene therapy
2. Once given no respect, cells tiny RNAS take drivers seat
3. How HIV disables the cells call for help
4. Stem cells electric abilities might help their safe clinical use
5. Scientists discover the molecular switch for nerve cells insulating jelly rolls
6. New insight into machinery of immune cells tentacles
7. Failure of scout cells may lead to cancer in transplant patients
8. Allergy cells can aggravate cancer and psoriasis
9. A key antibody, IgG, links cells capture and disposal of germs
10. Combination therapy boosts effectiveness of telomere-directed cancer cell death
11. Enzyme allows B cells to resist death, leading to leukemia
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Nurse cells make life and death decisions for infection fighting cells

(Date:9/30/2014)... reefs face a suite of perilous threats in ... development and climate change, fragile coral ecosystems are ... this trend, some species of corals surrounding the ... natural protector in their tropical environment: coral guard-crabs. ... History,s Smithsonian Marine Station scientist Seabird McKeon and ...
(Date:9/29/2014)... study confirms that the exposure to tar tended to ... regular cigarettes. Similarly, exposure to nicotine tended to ... type of cigarette in several countries around the world. ... toxic chemicals in the smoke of these cigarettes are ... levels of chemicals in the smoke are not necessarily ...
(Date:9/29/2014)... pizza in school? According to a new Food and ... chef-made meals can increase participation in the National School ... consumption of vegetables by 16%! , Chefs Move to ... campaign, pairs chefs with schools in order to provide ... school food service workers. , A CMTS event was ...
Breaking Biology News(10 mins):Smithsonian scientists discover coral's best defender against an army of sea stars 2Slim cigarette smokers not exposed to more harmful chemicals 2Chefs move to schools can increase school meal participation and vegetable intake among students 2
... Scientists aboard the Royal Research Ship James Cook have discovered ... waters of the Southern Ocean. The discovery is the ... suggests that deep-sea vents may be more common in our ... the researchers saw slender mineral spires three metres tall, with ...
... and Education (CARE) Unit ( www.bumc.bu.edu/CARE ) in the ... awarded a $1,886,087 renewal grant from the National ... to become sophisticated implementers of substance use screening, assessment ... renewal from the national institute on Drug Abuse to ...
... The more humanity acidifies and warms the world,s oceans ... to save our coral reefs. That,s the blunt message ... which finds that ocean acidification and global warming will combine ... the world,s coral reefs right when they are struggling to ...
Cached Biology News:More deep-sea vents discovered 2Acid oceans demand greater reef care 2
(Date:10/1/2014)... -- This report analyzes the worldwide markets ... the following Product Segments: Proteases, Polymerases, Carbohydrases, ... also analyzed are Pharmaceuticals & Diagnostics, Research/Biotechnology, ... separate comprehensive analytics for the US, Canada, ... America. Annual estimates and forecasts are provided ...
(Date:9/30/2014)... release is available in German . ... Technische Universitt Mnchen (TUM) have demonstrated a new kind ... show that future computer chips could be based on ... the main enabling technology of the semiconductor industry ... the TUM researchers and collaborators at the University of ...
(Date:9/30/2014)... Shimadzu Scientific Instruments has released ... highly precise tool for measuring displacement in rubber ... 1000-mm maximum movement distance, the DSES-1000 can measure ... length of 10 mm. In addition, it achieves ... stroke and within +/- 100 µm below 50-mm ...
(Date:9/30/2014)... 2014 Follow us on LinkedIn ... type of cholesterol carrier or lipoprotein in the blood. ... cholesterol levels in the body, especially along the walls ... attack and other cardiovascular disorders. Cardiovascular Diseases (CVD) is ... cholesterol levels on a regular basis, to assess an ...
Breaking Biology Technology:Global Specialty Enzymes Industry 2Global Specialty Enzymes Industry 3Global Specialty Enzymes Industry 4Global Specialty Enzymes Industry 5Global Specialty Enzymes Industry 6Global Specialty Enzymes Industry 7Global Specialty Enzymes Industry 8Global Specialty Enzymes Industry 9Global Specialty Enzymes Industry 10Global Specialty Enzymes Industry 11Global Specialty Enzymes Industry 12Global Specialty Enzymes Industry 13Global Specialty Enzymes Industry 14Global Specialty Enzymes Industry 15Global Specialty Enzymes Industry 16Global Specialty Enzymes Industry 17Global Specialty Enzymes Industry 18Global Specialty Enzymes Industry 19Global Specialty Enzymes Industry 20Global Specialty Enzymes Industry 21Global Specialty Enzymes Industry 22Global Specialty Enzymes Industry 23Global Specialty Enzymes Industry 24Global Specialty Enzymes Industry 25Global Specialty Enzymes Industry 26A new dimension for integrated circuits: 3-D nanomagnetic logic 2A new dimension for integrated circuits: 3-D nanomagnetic logic 3Shimadzu’s New Long-Travel Extensometer Increases Precision for Soft Material Testing 2Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 2Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 3Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 4
... N.Y., May 14, 2012  More than one billion people worldwide ... decrease in the ability of the lens in the eye ... all seen others struggle with trying to read menus and ... To combat this change in vision, which often begins around ...
... In its ongoing effort to help patients, ... detailed information about its NovoTTF™ therapy for recurrent ... Website, found at www.novottftherapy.com . ... the NovoTTF™-100A, a wearable device that ...
... Inc. (NYSE Amex: PTN ) a biopharmaceutical ... of diseases with significant unmet medical need and commercial ... March 31, 2012.  Palatin reported a net loss of ... for the quarter ended March 31, 2012, compared to ...
Cached Biology Technology:New Daily Disposable Multifocal Contact Lenses from CooperVision Offer Comfort, Performance, Health, and Convenience to Fit Your Life 2New Daily Disposable Multifocal Contact Lenses from CooperVision Offer Comfort, Performance, Health, and Convenience to Fit Your Life 3Novocure Announces Launch of Recurrent Glioblastoma Product Website 2Novocure Announces Launch of Recurrent Glioblastoma Product Website 3Palatin Technologies, Inc. Reports Third Quarter Fiscal Year 2012 Results; Teleconference and Webcast to be held on May 14, 2012 2Palatin Technologies, Inc. Reports Third Quarter Fiscal Year 2012 Results; Teleconference and Webcast to be held on May 14, 2012 3Palatin Technologies, Inc. Reports Third Quarter Fiscal Year 2012 Results; Teleconference and Webcast to be held on May 14, 2012 4Palatin Technologies, Inc. Reports Third Quarter Fiscal Year 2012 Results; Teleconference and Webcast to be held on May 14, 2012 5
Recombinant Mouse Wnt-3a...
... at least 20 structurally and functionally related ... superfamily. BMPs were originally identified as protein ... are also involved in embryogenesis and morphogenesis ... the growth, differentiation, chemotaxis and apoptosis of ...
RABBIT ANTI HUMAN TRRAP (CT) Immunogen: Recombinant C-terminal kinase-related domain of human TRRAP....
RABBIT ANTI HUMAN CHYMOTRYPSIN...
Biology Products: