Blog | HemaCare

Cells May Cooperate to Treat Cancers

Oct 22, 2018 10:30:00 AM / by Stacy Matthews Branch, DVM, PhD posted in cancer treatment, Immunotherapy, T Cells, Natural Killer Cells, NK Cells

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Recent research reveals T cells and Natural Killer (NK) cells may respond to cancer cells differently and could ultimately provide more cancer treatment options.

A leading immunotherapeutic approach to treating cancer involves the use of checkpoint inhibitors. Immune checkpoints are proteins expressed on T cells and are essential for the self-tolerance needed to prevent autoimmunity. When T-cell checkpoint molecules bind to its ligand on cells, the targeted cell is not harmed. These checkpoints are often exploited by tumor cells by possessing checkpoint molecules such as PD-L1 and impeding the immune system’s ability to initiate and carry out an immune attack on the tumor.

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Expansion of Antitumor Natural Killer Cells Using Anti-CD16 Antibody and Irradiated Autologous Peripheral Blood Mononuclear Cells

Nov 20, 2017 8:00:37 AM / by Stacy Matthews Branch, DVM, PhD posted in Peripheral Blood Mononuclear Cell, peripheral blood mononuclear cells, Natural Killer Cells, NK Cells

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Natural killer (NK) cells are lymphocytes of the innate immune system and are important in controlling tumors and infections without depending on the recognition of specific antigens. The activation of NK cells occur via NK cell receptor interactions, including the CD 16 (Fc-gamma) receptors that bind antibodies (eg. IgG) attached to pathogens and infected cells. The CD16 receptor is involved in antibody-dependent cellular cytotoxicity, a process associated with the effectiveness of antibody-based cancer immunotherapies.

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