Navigation Links
Discovery may lead to new treatments for allergic diseases
Date:11/11/2013

A collaboration among researchers in Israel and the United States has resulted in the discovery of a new pathway that has broad implications for treating allergic diseases particularly eosinophil-associated disorders.

The researchers from Tel Aviv University and Cincinnati Children's Hospital Medical Center have discovered how this pathway kills eosinophils before they can cause havoc. Eosinophils are normal cellular components of the blood, but when the body produces too many eosinophils they can cause a variety of eosinophilic disorders. These are disorders involving chronic inflammation resulting in tissue damage, often in the gastrointestinal system.

The study is published online in the journal Nature Immunology.

"The fundamental knowledge we have gained may one day yield new therapies to treat devastating eosinophilic disorders," says Ariel Munitz, PhD, a researcher at the department of Clinical Microbiology and Immunology at the Sackler School of Medicine at Tel Aviv University and corresponding author of the study.

Eosinophils are regulated by interleukin 5 (IL-5), a protein that triggers eosinophils to leave the bone marrow and enter the bloodstream, where they can reach various organs. Dr. Munitz and Marc Rothenberg, MD, PhD, director of Allergy and Immunology at Cincinnati Children's, have identified a pathway for counterbalancing what happens when IL-5 triggers eosinophils. The newly identified pathway involves a key checkpoint controlled by a pair of proteins, PIR-A and PIR-B, which the researchers now show have a critical role in eosinophil development.

PIR-A induces eosinophils to die and thus is in a perpetual tug-of-war with survival and growth signals driven by IL-5. The researchers discovered that PIR-A is dominant in this battle but that cell death doesn't occur because PIR-B inhibits its actions. For PIR-A to win the battle and cause cells to die, PIR-B must be shut down.

The researchers studied asthmatic mice and discovered that asthmatic mice without PIR-B had little expansion of eosinophils in their blood and lungs and less asthmatic inflammation in their lungs than normal mice. The lack of PIR-B kept eosinophils from reaching harmful levels. The researchers hope that scientists can now target PIR-A to enhance its ability to kill eosinophils or weaken PIR-B so that it inhibits PIR-A to a lesser extent.


'/>"/>

Contact: Nick Miller
nicholas.miller@cchmc.org
513-803-6035
Cincinnati Children's Hospital Medical Center
Source:Eurekalert

Related biology news :

1. International collaboration finds 11 new Alzheimers genes to target for drug discovery
2. McGill discovery should save wheat farmers millions of dollars
3. New genetic discovery could reduce the guesswork in drug dosing
4. Decades on, bacteriums discovery feted as paragon of basic science
5. Discovery of cell division master controller may improve understanding and treatment of cancer
6. Discovery about DNA repair could lead to improved cancer treatments
7. Discovery helps to unlock brains speech-learning mechanism
8. University of Hawaii Cancer Center researchers discovery
9. 4 projects awarded Discovery Transformation Grant funding by Minnesota Partnership
10. NOAA reports discovery of table coral, Acropora cytherea, off Oahu
11. UK researcher earns 2013 Discovery Award
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... , Apr. 11, 2017 Research and Markets ... 2017-2021" report to their offering. ... The global eye tracking market to grow at a CAGR ... Global Eye Tracking Market 2017-2021, has been prepared based on an ... the market landscape and its growth prospects over the coming years. ...
(Date:4/5/2017)... April 5, 2017  The Allen Institute for Cell ... Explorer: a one-of-a-kind portal and dynamic digital window into ... data, the first application of deep learning to create ... cell lines and a growing suite of powerful tools. ... these and future publicly available resources created and shared ...
(Date:4/3/2017)... , April 3, 2017  Data captured ... engineering platform, detected a statistically significant association ... prior to treatment and objective response of ... potential to predict whether cancer patients will ... treatment, as well as to improve both pre-infusion ...
Breaking Biology News(10 mins):
(Date:8/16/2017)... ... 2017 , ... Tunnell Consulting announced today that four of the ... Meeting and Expo , to be held October 29 through November 1 in San ... to advance patient therapies.” , The ISPE Annual Meeting and Expo will feature several ...
(Date:8/16/2017)... ... August 16, 2017 , ... ... a different cell type. Many treatments for specific cancers, such as breast, prostate, ... targeted treatment is androgen deprivation therapy for advanced prostate cancer. , This ...
(Date:8/16/2017)... ... August 16, 2017 , ... Today, ... announced it has secured $2M in funding from an impressive group of investors, ... and SVG Thrive Fund. With this investment, 3Bar is broadening availability of its ...
(Date:8/16/2017)... edition of the Inc. 5000 features a now-familiar name: BioPoint ( http://biopointinc.com/ ... list for the third year in a row. Now in its 36th ... a set of quantitative metrics. In addition, BioPoint was also named to ... Bay State . ... ...
Breaking Biology Technology: