Introduction:What they say:
A recent study from Cell Signalling Section, Division of Immunology, Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK shows that “Glycogen Synthase Kinase 3 Inactivation Drives T-bet-Mediated Downregulation of Co-receptor PD-1 to Enhance CD8(+) Cytolytic T Cell Responses.” This study was published in the 16 February 2016 issue of Immunity (one of the best journals in Immunology with an impact factor of 20+) by Prof Rudd CE, Taylor A and others.
What we say:
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On the foundation of this interesting finding, Dr L Boominathan PhD, Director-cum-chief Scientist of GBMD, reports that: Natural product-derived PD-1 pathway blockade for Human cancer therapy: Persimmon tannin extract decreases the activity of Glycogen synthase kinase-3β, increases transcription factor T-bet expression, decreases the abundance of co-inhibitory receptor PD-1 on the cell surface of Cytotoxic-T-cells, increases Cytotoxic T lymphocyte function and augments anti-tumor activity, via up-regulation of its target gene
What is known?
It has recently been shown that blocking PD-1 with antibodies one could make tumors shrink. This work, relating to Cancer immunotherapy, has been chosen as Science’s breakthrough of the year.
Research Findings:
This study suggests a natural product-based Human cancer therapy. Persimmon tannin extract, by increasing the expression of its target gene, it may suppress the expression of Glycogen synthase kinase 3-β (figure 1).
Thereby, it may: (a) increase transcription factor T-bet expression; (b) inhibit co-inhibitory receptor PD-1 expression; (c) increase CD8(+) cytotoxic T lymphocyte function; (d) augment anti-tumor activity; & (e) inhibit metastatic cancer progression.
Therapeutic opportunity:
Thus, pharmacological formulations encompassing “Persimmon tannin extract or an active compound isolated from it“ may be used to inhibit the progression of tumors.
Details of the research findings:
Idea Proposed/Formulated (with experimental evidence) by: Dr L Boominathan Ph.D.
Terms & Conditions apply http://genomediscovery.org/registration/terms-and-conditions/
Amount: $50
Undisclosed information: How does Persimmon tannin extract suppress the expression of PD-1 to promote anti-tumor immunity?
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References:
Citation: Boominathan, L., Natural product-derived PD-1 pathway blockade for Human cancer therapy: Persimmon tannin extract decreases the activity of Glycogen synthase kinase-3β, increases transcription factor T-bet expression, decreases the abundance of co-inhibitory receptor PD-1 on the cell surface of Cytotoxic-T-cells, increases cytotoxic T lymphocyte function and augments anti-tumor activity, via up-regulation of its target gene, 13/December/2016, 11.45 pm, Genome-2-Bio-Medicine Discovery center (GBMD), http://genomediscovery.org
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