Survivors of 1918 flu pandemic protected with a lifetime immunit... ( New research has discovered that inf...)

Survivors of 1918 flu pandemic protected with a lifetime immunity to virus

Date:8/17/2008

New research has discovered that infection and natural exposure to the 1918 influenza virus made survivors immune to the disease for the remaining of their lives. Antibodies produced by cells isolated from these survivors served as an effective therapy to protect mice from the highly lethal 1918 infection. The study entitled "Neutralizing antibodies derived from the B cells of 1918 influenza pandemic survivors," was released for advanced online publication by the journal Nature. Researchers at Mount Sinai School of Medicine's Department of Microbiology contributed to the research findings. An estimated 50 million people were killed by the 1918 flu pandemic worldwide.

"Ninety years after survivors encountered the 1918 pandemic influenza virus, we collected antibody-producing B cells from them, and successfully isolated B cells that produce antibodies that block the viral infection," said contributing author Dr. Christopher Basler, PhD, Associate Professor of Microbiology at Mount Sinai School of Medicine. "The antibodies produced by these cells demonstrated remarkable power to block 1918 flu virus infection in mice, proving that, even nine decades after infection with this virus, survivors retain protection from it."

"The fact that you can isolate these anti-1918 memory B cells so long after infection will hopefully provide the impetus to further study the mechanisms behind long lived immunity," said Dr. Osvaldo Martinez, post-doctoral fellow at Mount Sinai School of Medicine.

For this study, 32 individuals who were born before 1918 and lived through the influenza pandemic were recruited by Dr. Eric Altschuler at the University of Medicine and Dentistry of New Jersey to donate blood which was tested by Dr. Basler's lab for the presence of antibodies that recognize the 1918 virus. Dr. James Crowe and colleagues at Vanderbilt University produced antibodies from these individuals' blood cells and provided these to Dr. Basler's lab whe
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Contact: Mount Sinai Newsroom
newsmedia@mssm.edu
212-241-9200
The Mount Sinai Hospital / Mount Sinai School of Medicine
Source:Eurekalert

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