Navigation Links
Mast Cells Suppress Immune System

Researchers at the Dartmouth Medical School have discovered a vital link that reveals how the immune system works. Their study is published online on August 20 in the journal// Nature. The researchers found that mast cells, which are involved in allergic reactions, are involved in immune system suppression.

'Our finding is a complete surprise. We were studying transplant tolerance and what's required to protect a graft from rejection,' says Randolph Noelle, professor of microbiology and immunology at Dartmouth Medical School. 'When we went looking to see what genes were responsible in a successful graft, we found high levels of mast cell gene products, which made the connection between regulatory T cells and mast cell recruitment. The fact that mast cells may be instrumental in orchestrating regulatory T cell tolerance was new, unanticipated, and surprising.'

In their study, the researchers determined that mast cells are crucial for sustaining immune suppression in transplanted skin on mice, which means longer acceptance or tolerance of the transplant. Mice that were mast cell deficient rejected the skin graft. Furthermore, the researchers found that IL-9, a protein already known for playing a role in mast cell activation and recruitment, was discovered to be produced by regulatory T cells. As such, the other key discovery in this study was that Il-9 appears to be an essential ingredient in the success of transplanted skin.

'Because of this study, mast cells are now the new cellular target in understanding immune suppression,' says Noelle, who is co-director of the Immunotherapy Program of the Norris Cotton Cancer Center at Dartmouth-Hitchcock Medical Center. 'We now have a whole new set of cellular, and eventually molecular, interactions to study.'

According to Noelle, the findings might also impact some cancer treatments as mast cells are known to promote growth in some tumors. Future research might look into suppres sing mast cells to boost the immune system, which could lead to tumor rejection.

'It is only because of the extremely high quality of the graduate students in Dartmouth's Molecular and Cell Biology Program and the hard work of post-docs and colleagues that this new paradigm of cellular interactions in immunology was discovered,' says Noelle.

Source: Eurekalert
'"/>




Related medicine news :

1. Blood Cells Capable of Regenerating Liver
2. White Cells Count Can Predict Heart Attack Death Risk
3. Gene Therapy Destroys Pancreatic Cancer Cells
4. Stem Cells Have Few Mutations
5. Heart may pull Cells from Body to Self-repair
6. Cells critical for asthma development found
7. Vitamin D Wipes out Cancer Cells
8. Bone Marrow Cells Help Heart Attack Patients
9. Islet Cells May Lead to Diabetes CureChildren
10. Stem Cells Found To Offer Promise For Hair Growth
11. Bone Marrow Cells Could Yield A New Lease of Life
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/26/2016)... (PRWEB) , ... June 27, 2016 , ... Quality metrics ... yet in many ways they remain in the eye of the beholder, according to ... a publication of The American Journal of Managed Care. For the full issue, ...
(Date:6/26/2016)... ... ... legally blind and certified personal trainer is helping to develop a weight loss fitness plan ... fix the two major problems leading the fitness industry today:, , ... They don’t eliminate all the reasons people quit their exercise program ...
(Date:6/25/2016)... (PRWEB) , ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library ... City Observer , brings up a new, often overlooked aspect of head lice: the parasite’s ... for fumigation is not a common occurrence, but a necessary one in the event that ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... non-athletes recover from injury. Recently, he has implemented orthobiologic procedures as a method ... —Johnson is one of the first doctors to perform the treatment. Orthobiologics are ...
(Date:6/24/2016)... ... June 24, 2016 , ... Those who have experienced traumatic events may suffer ... unhealthy avenues, such as drug or alcohol abuse, as a coping mechanism. To avoid ... healthy coping following a traumatic event. , Trauma sufferers tend to feel a range ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016 Research and ... Market for Companion Diagnostic Tests" report to their offering. ... for Companion Diagnostics The World Market for ... personalized medicine diagnostics. Market analysis in the report includes the ... Market (In Vitro Diagnostic Kits) by Region (N. America, EU, ...
(Date:6/24/2016)... , Belgium , June 24, ... VNRX), today announced the appointment of Dr. ... Directors as a Non-Executive Director, effective June 23, ... Audit, Compensation and Nominations and Governance Committees.  As ... Futcher will provide independent expertise and strategic counsel ...
(Date:6/23/2016)... June 23, 2016 Research and Markets ... Market - Forecast to 2022" report to their offering. ... method for the patients with kidney failure, it replaces the ... from the patient,s blood and thus the treatment helps to ... chloride in balance. Increasing number of ESRD ...
Breaking Medicine Technology: