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Protein LEM promotes CD8+ T cell immunity to virii and cancer

lem cd38 immunity virus cancer

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#1 Logic

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Posted 20 April 2015 - 10:55 PM


Scientists discover protein that boosts immunity to viruses and cancer

Dr Claudio Mauro, who led the research from the Centre for Biochemical Pharmacology, based within Queen Mary University of London’s William Harvey Research Institute, said: 

“This study has identified the novel protein LEM and unlocked an unexpected way of enhancing the ability of our immune system to fight viruses or cancers. This is based on the ability of the protein LEM to regulate specific energy circuits, and particularly mitochondrial respiration, in a subset of white blood cells known as cytotoxic T cells. This discovery has immediate consequences for the delivery of innovative therapeutic approaches to cancer. Its ramifications, however, are far greater as they can help explaining the biological mechanisms of widespread human diseases involving altered immune and inflammatory responses. These include chronic inflammatory and autoimmune disorders, such as atherosclerosis and rheumatoid arthritis.”

http://www3.imperial...4-2015-14-51-47

 

The protein LEM promotes CD8+ T cell immunity through effects on mitochondrial respiration

Protective CD8+ T cell–mediated immunity requires a massive expansion in cell number and the development of long-lived memory cells. Using forward genetics in mice, we identified an orphan protein named Lymphocyte Expansion Molecule (LEM) that promoted antigen-dependent CD8+ T cell proliferation, effector function, and memory cell generation in response to infection with lymphocytic choriomeningitis virus. Generation of LEM-deficient mice confirmed these results. Through interaction with CR6 interacting factor (CRIF1), LEM controlled the levels of oxidative phosphorylation (OXPHOS) complexes and respiration resulting in the production of pro-proliferative mitochondrial Reactive Oxygen Species (mROS). LEM provides a link between immune activation and the expansion of protective CD8+ T cells driven by OXPHOS and represents a pathway for the restoration of long-term protective immunity based on metabolically modified CTL.

http://www.sciencema...aa7516.abstract

 


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#2 Kalliste

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Posted 21 April 2015 - 08:18 PM

Interesting find.

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#3 Logic

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Posted 24 April 2015 - 11:53 PM

Interesting find.

 

Thx.

 

I wonder if the protein LEM can be injected or if the white blood cells have to produce it.

I must have a look at the whole study sometime.

Maybe this is something that can be produced and injected when reqd.



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#4 Kalliste

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Posted 25 April 2015 - 03:58 AM

It feels like there are so many little tidbits like this coming in all the time. A shame the area is so underfunded.







Also tagged with one or more of these keywords: lem, cd38, immunity, virus, cancer

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