Navigation Links
Insights gained from growing cold-causing virus on sinus tissue
Date:4/10/2011

MADISON - Using sinus tissue removed during surgery at University of Wisconsin Hospital and Clinics, researchers at the University of Wisconsin-Madison have managed to grow a recently discovered species of human rhinovirus (HRV), the most frequent cause of the common cold, in culture.

The researchers found that the virus, which is associated with up to half of all HRV infections in children, has reproductive properties that differ from those of other members of the HRV family.

The accomplishments, reported in Nature Medicine on April 11, should allow antiviral compounds to be screened to see if they stop the virus from growing.

The report sheds light on HRV-C, a new member of the HRV family that also includes the well-known HRV-A and HRV-B. Discovered five years ago, HRV-C has been notoriously difficult to grow in standard cell cultures and, therefore, impossible to study.

"We now have evidence that there may be new approaches to treating or preventing HRV-C infections," says senior author James Gern, professor of medicine at the UW-Madison School of Medicine and Public Health and an asthma expert at American Family Children's Hospital.

Future drugs could be especially useful for children and adults who have asthma and other lung problems, Gern says.

Recent studies have shown that in addition to its major role in the common cold, HRV-C is responsible for between 50 percent and 80 percent of asthma attacks. HRV-C is a frequent cause of wheezing illnesses in infants and may be especially likely to cause asthma attacks in children. HRV infections of all kinds also can greatly worsen chronic lung diseases such as cystic fibrosis and chronic obstructive pulmonary disease.

Like other scientists, Yury Bochkov, a virologist in Gern's lab, was unable to grow HRV-C in standard cell lines. So he turned to nasal tissue he collected following sinus surgeryand was surprised to find success. He grew significant amounts of two forms of HRV-C, then sequenced the complete virus genome and engineered an identical copy of it in a plasmid vector.

Studying the reproduction of the living, growing virus, he found that HRV-C replication appeared to occur in specific kinds of cells localized in nasal epithelium tissue.

"We also found that HRV-C does not attach to the two receptors that HRV-A and HRV-B use," Bochkov says. "HRV-C uses a distinct, yet unknown, receptor that is absent or under-expressed in many cell lines."

HRV-C also responded differently to antibodies that block receptor binding.

"Antibodies that normally keep HRV-A and HRV-B from binding to their receptors did not prevent HRV-C from binding to them," Bochkov says.

The findings suggest that new approaches are needed to treat HRV-C, says Gern.

"Previous drug candidates for the common cold were tested only against HRV-A and HRV-B," he says. "For more effective medications, we need to also target HRV-C."

Bochkov will continue to use the organ culture system to study details of HRV-C biology.

"It's now clear that these viruses have unique growth requirements," he says.


'/>"/>

Contact: Toni Morrissey
tmorrissey@uwhealth.org
608-263-3223
University of Wisconsin-Madison
Source:Eurekalert

Related medicine news :

1. Bird embryo provides unique insights into development related to cancer and wound healing
2. New insights into cancer treatment
3. Scientists reveal new insights into tendon injury
4. First Look at Prostate Cancer Genome Yields Insights
5. New Insights on Who Should Take Erbitux for Colon Cancer
6. Sodium MRI gives new insights into detecting osteoarthritis, NYU researchers find
7. Snake venom studies yield insights for development of therapies for heart disease and cancer
8. Cell symposia meeting, Influenza: Translating basic insights, to be held Dec. 2-4, 2010
9. From head to toe: Deep insights from whole body MRI
10. Emerald Express International to be Featured on ‘Insights' with Hugh Downs this Spring in a Segment that Spotlights Glutathione and Anti-Aging
11. Expert Insights on Health Data Sharing, Collaboration, Quality and Meaningful Use Featured in Latest Carefx Position Paper
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... October 13, 2017 , ... ... viewers the lowdown on sciatica in a new episode of "Success Files," which ... current events and innovation and investigates each subject in-depth with passion and integrity. ...
(Date:10/13/2017)... ... ... On The Brink”: the Christian history of the United States and the loss of ... William Nowers. Captain Nowers and his wife, Millie, have six children, ten grandchildren, ... Navy. Following his career as a naval aviator and carrier pilot, he spent ...
(Date:10/12/2017)... ... October 12, 2017 , ... Planet Fitness, one of the largest ... its plans to open a flagship location in Covington, LA at 401 N. U.S. ... Go store next to Office Depot in the Holiday Square shopping center. Its location ...
(Date:10/12/2017)... ... 2017 , ... The American College of Medical Informatics (ACMI) will present the ... Opening Session of AMIA’s Annual Symposium in Washington, D.C. AMIA’s Annual Symposium ... a pioneer in the field of medical informatics, this prestigious award is presented to ...
(Date:10/12/2017)... ANGELES (PRWEB) , ... October 12, 2017 , ... ... Parsa Mohebi Hair Restoration, has recently contributed a medical article to the newly ... on cosmetictown.com. Dr. Mohebi’s article spotlights the hair transplant procedure known as ...
Breaking Medicine News(10 mins):
(Date:10/11/2017)... Holdings, Inc. ("Hill-Rom") (NYSE: HRC), today provided an update ... Puerto Rico , where the company manufactures ... Following a comprehensive onsite assessment, the ... temporary loss of power and minimal water damage due ... have resumed, and the company expects to return to ...
(Date:10/10/2017)... --  West Pharmaceutical Services, Inc. (NYSE: WST), a ... today shared the results of a study highlighting the ... administration of polio vaccines. The study results were presented ... by Dr. Ondrej Mach , Clinical Trials and ... and recently published in the journal Vaccine. i ...
(Date:10/5/2017)...  In response to the nationwide opioid epidemic, ... (AAOMS) released prescribing recommendations that urge ibuprofen – ... a first-line therapy to manage a patient,s acute ... Recognizing the value and importance of the ... Acute and Postoperative Pain Management" stresses that practitioners ...
Breaking Medicine Technology: