poly-gamma glutamic acid

A water-soluble and biodegradable polymer naturally synthesized by various strains of Bacillus and composed of D- and L-glutamic acid polymerized via gamma-amide linkages, with potential antineoplastic activity. Upon administration, poly-gamma glutamic acid may augment the immune response by increasing the production of interferon-gamma (IFN-gamma) and tumor necrosis factor-alpha (TNF-alpha) and inducing the activation of macrophage and natural killer (NK) cells. In addition to its tumor control properties, IFN-gamma is a major mediator of innate and adaptive immunity against viral and intracellular bacterial infections. TNF-alpha is a cytokine involved in systemic inflammation, which is capable of inducing apoptotic cell death and exhibits anti-tumoral effects. Check for active clinical trials using this agent. (NCI Thesaurus)

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