Tianjin Med J ›› 2015, Vol. 43 ›› Issue (9): 1085-1088.doi: 10.11958/j.issn.0253-9896.2015.09.036

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The research progress of PD-1 channel inhibition in tumor treatment

CHEN Lu, TAN Chao△   

  1. The First Clinical Medical College, China Three Gorges University, Yichang 443002, China
  • Received:2014-11-24 Revised:2015-03-10 Published:2015-09-15 Online:2015-09-15
  • Contact: △Corresponding Author E-mail: yczxyytanchao@sina.com E-mail:yczxyytanchao@sina.com

Abstract: Abstract: Programmed death1 (PD-1) is mainly expressed on the surface of activated T cell. The combination between PD-1 and its legends PD-L1/PD-L2 activate downstream signaling pathways and negatively regulate T cell activation. Ab⁃ normal increase expression of PD-L1 on tumor cell surface mediates the tumor immune escape. Inhibition of PD-1 signaling pathway contributes to antitumor effect of T cells. The development of this pathway inhibitors has become a hot spot for tu⁃ mor immunotherapy. This article expounds the progress about antitumor effects mediated by PD-1 pathway inhibition from experiments in vivo or in vitro and clinical development of PD-1 pathway inhibitors, providing a new target for cancer immu⁃ notherapy and theoretical and clinical basis for the clinical application of immunotherapy with traditional therapy methods.

Key words: neoplasms, immunotherapy, review, programmed death 1, PD-1 ligand