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Researchers have identified a novel immunological mechanism of great importance for vaccine developm
Date:2/23/2014

Researchers have discovered the presence of a novel subtype of innate lymphoid cells in human spleen essential for the production of antibodies. This discovery, published in the prestigious journal Nature Immunology, clears the path to the identification of novel strategies to develop more efficient vaccines against encapsulated bacteria, considered highly virulent.

This work was done by the B cell Biology research group at IMIM (Institut Hospital del Mar d'Investigacions Mediques) in Barcelona, directed by Dr. Andrea Cerutti, ICREA research professor and leader in the field of B lymphocyte biology. Amongst the collaborators of the group are researchers from Icahn School of Medicine of Mount Sinai in New York and Riken Research Center for Integrative Medicine in Japan.

Innate lymphoid cells were recently described by the scientific community and represent the first line of immunological defence on our body surfaces, which are constantly exposed to bacteria, such as the intestine or skin. "For the first time it has been described both their presence and function in human spleen. We have discovered how these cells regulate the innate immune response of a subset of splenic B lymphocytes that are responsible to fight against encapsulated bacteria, causative agents of meningitis or pneumonia", says Dr. Giuliana Magri, member of the research group of B Cell Biology at IMIM and first author in the paper. This new finding improves our understanding on how the immune system protects us against infections.

"The current available vaccines against encapsulated bacteria confer only a limited protection in immunodeficient patients, and are too expensive to be implemented in developing countries. At the same time, we lack information on the underlying mechanisms that regulate B lymphocytes, which has been a major hurdle in the development of novel vaccine strategies. This makes the current discovery key in the design of novel more efficient and well-oriente
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Contact: Marta Calsina
mcalsina@imim.es
34-933-160-680
IMIM (Hospital del Mar Medical Research Institute)
Source:Eurekalert

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