Finnish research group discovers a new immune system regulator
These are test tubes. Photo: Hanna Oksanen, University of Turku
Regulatory T cells are critical controllers of the immune response. The majority of T cells boost the immune response enhancing the ability to destroy cancer cells, viruses and bacteria.
In contrast, regulatory T cells can sometimes suppress the immune system's ability to attack cancer cells, allowing cancer to grow and spread.
In these instances, inhibiting or braking the regulatory T cell activity would be needed.
-We discovered that a protein called 'Hypermethylated In Cancer 1', or HIC1, serves as the key regulator of regulatory T cells controlling the expression of a large set of genes contributing to T cell function, says Academy Professor Riitta Lahesmaa.
– In addition, with genome-wide methods we show that HIC1 binds to sites in the nucleus that often contain genetic variations associated with immune-mediated diseases. This gives us completely new insights into molecular mechanisms that regulate T cell function and immune response in general, continues Lahesmaa.
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The study was published in the Cell Reports journal on 20 February 2018.
Transcriptional Repressor HIC1 Contributes to Suppressive Function of Human Induced Regulatory T Cells, available online: http://www.
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