Navigation Links
Mount Sinai discovers bone marrow plays critical role in enhancing immune response to viruses
Date:5/24/2010

Researchers at Mount Sinai School of Medicine for the first time have determined that bone marrow cells play a critical role in fighting respiratory viruses, making the bone marrow a potential therapeutic target, especially in people with compromised immune systems. They have found that during infections of the respiratory tract, cells produced by the bone marrow are instructed by proteins to migrate to the lungs to help fight infection. The data are published in the current issue of Cell Host & Microbe.

Led by Carolina Lopez, PhD, Assistant Professor of Microbiology at Mount Sinai School of Medicine, the research team evaluated the immune response to influenza infection in the lung and blood of mice. The team found that in the days following infection the lung became inflamed and produced interferons, or infection-fighting proteins, a message that alerted bone marrow cells of the presence of the virus and signaled them to prepare to fight the infection. The researchers determined that many new cells generated in the bone marrow enter the infected lung to help fight infection.

Previous studies of the immune response against respiratory viruses focused on the regulation of specific immune cells that acquire a specific function in the lymph nodes of the infected animals. These adaptive cells develop relatively late during infection, but are important for the clearance of the virus and for protection against reinfection with the same virus. This study is the first to show that the immune response also involves the earlier activation of cells in the bone marrow, and that this earlier response is also critical for the efficient clearance of the virus.

"Our research shows that in addition to the regulation of the development of cells, the immune response is regulated at a much earlier stage by influencing cells in the distal bone marrow and that this regulation of what is known as the innate immune response is important for the efficient clearance of the infection," said Dr. Lopez. "Very limited research has been done to evaluate bone marrow's response to a virus infection. Our study is the first to determine the pivotal role bone marrow cells play in fighting a respiratory infection. This discovery has broad-reaching implications in boosting protection against viruses."

After the mice were infected, researchers analyzed the inflammatory response daily by measuring the level of immune cells present in the lung, blood and bone marrow. They noticed that interferons, or anti-viral proteins, and cytokines, a type of immune cell, were produced exclusively by the infected lung but cells in the bone marrow responded to the infection with the expression of a number of anti-viral proteins known to be induced by interferons. Further analysis showed that cells from the bone marrow of infected mice were protected from the virus and were able to produce higher levels of cytokines upon exposure to a virus. The analysis showed that the bone marrow supplies the lung with infection-fighting cells, and that acute infection of the lung is sensed by bone marrow cells, cuing them to be prepared to fight the virus.

"The findings may be especially significant for people with compromised immune systems, including transplant and HIV patients," said Dr. Lopez. "These patients are treated with anti-viral drugs to help them avoid infection or reactivation of chronic viruses, as these types of infections are especially dangerous and could become systemic in people with suppressed immune systems. This new discovery may open new avenues for prevention and treatment of lethal infections."


'/>"/>
Contact: Mount Sinai Press Office
newsnow@mountsinai.org
212-241-9200
The Mount Sinai Hospital / Mount Sinai School of Medicine
Source:Eurekalert

Related medicine news :

1. Mount Sinai School of Medicine Commencement Honors Leaders in Genetics and Global Health
2. Mount Sinai Medical Center and ENT & Allergy Associates, LLP Create First-Of-Its-Kind Physician Portal
3. Jeffrey Gottfurcht Children's Arthritis Foundation Launches With Mount Everest Climb
4. The Mount Sinai Hospital Earns Highest Ratings in New York State Report on Coronary Angioplasty
5. Mount Sinai School of Medicine Ranked in the Top 20 Best Medical Schools by US News & World Report
6. WhiteDove Herbals Re-Launches Online Store Rocky Mountain Herbals
7. Recent Studies Show MAstertuck℠ Technique Removes Large Amounts of Body Fat without Tummy Tuck Surgery
8. Mount Sinai study finds only a weak link between fruit and vegetable and reduced risk of cancer
9. New Study Reveals National IT Security Challenges Mounting; Growing Sophistication of Cyber Attacks Pose Greatest Risk to U.S. Infrastructure
10. BOTOX Cosmetic & Wrinkle Filler Specialist Hosts Advanced Training Event at Ageless Beauty in Mountain Home, ID
11. Rutgers University Offers Fundamentals of Finance and Accounting Workshop at Mount Laurel, New Jersey Location Aimed at Non-Financial Managers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... October 13, 2017 , ... ... communities in the greater Dallas, Miami, and Raleigh regions, is organizing an extended ... overcome a rare and deadly chromosome abnormality. , After struggling since birth with ...
(Date:10/13/2017)... , ... October 13, 2017 , ... ... the certification process to promote standards of excellence for the field of eating ... for March 22 – 25, 2018 in Orlando, Florida at the Omni Resort ...
(Date:10/13/2017)... LUIS OBISPO, Calif. (PRWEB) , ... October 13, 2017 , ... ... Alzheimer’s or dementia. However, many long-term care insurance companies have a waiver for care ... is the 90-day elimination period, when the family pays for care, is often waived, ...
(Date:10/13/2017)... ... October 13, 2017 , ... Talented host, actor Rob ... sciatica in a new episode of "Success Files," which is an award-winning educational ... and investigates each subject in-depth with passion and integrity. , Sciatica occurs when ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... are now treating sleep apnea using cutting-edge Oventus O2Vent technology. As ... serious sleep disorder characterized by frequent cessation in breathing. Oral appliances can offer ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... Oct. 2, 2017  Eli Lilly and Company (NYSE: ... for the third quarter of 2017 on Tuesday, October ... on that day with the investment community and media ... The conference call will begin at 9 a.m. Eastern ... a live webcast of the conference call through a ...
(Date:9/28/2017)... -- Cohen Veterans Bioscience and Early Signal Foundation announce ... home sensors for real-time monitoring of patients with trauma-related ... organization focused on disruptive health solutions for rare disorders ... to record and integrate behavioral, cognitive, physiological and contextual ... ...
(Date:9/23/2017)... -- Janssen Biotech, Inc. (Janssen) announced today that it ... Food and Drug Administration (FDA) for the Biologics License ... of moderately to severely active rheumatoid arthritis (RA). The ... to further evaluate the safety of sirukumab in the ... "We are disappointed by ...
Breaking Medicine Technology: