Journal of Practical Oncology ›› 2021, Vol. 35 ›› Issue (4): 370-375.doi: 10.11904/j.issn.1002-3070.2021.04.014

• Review • Previous Articles     Next Articles

Clinical research status of programmed cell death protein-1 and its ligand in colorectal cancer

LIU Wen, QIAO Wenbo   

  1. Department of Abdominal Radiotherapy,Harbin Medical University Cancer Hospital,Harbin 150081,China
  • Received:2020-10-12 Revised:2021-01-12 Published:2021-08-24

Abstract: Programmed cell death protein-1(PD-1)plays a negative role in regulating immune response by interacting with programmed cell death protein ligand-1(PD-L1),which promotes tumor cell immune escape.Immunotherapy targeting PD-1/PD-L1 has become a new model of tumor therapy.At present,surgery and radiotherapy and chemotherapy are still the main treatment for colorectal cancer,but the survival rate has not been significantly improved.Studies have shown that PD-1/PD-L1 inhibitors alone or combined with radiotherapy,chemotherapy and surgery have achieved considerable results in colorectal cancer,and related clinical trials are ongoing.This article reviews the molecular biological mechanism of PD-1/PD-L1 signaling pathway and the relationship between the expression of PD-L1 and the chemoradiotherapy and prognosis of colorectal cancer,and introduces the clinical research progress of PD-1/PD-L1 inhibitors in colorectal cancer.

Key words: Programmed cell death protein-1/Programmed cell death protein ligand-1(PD-1/PD-L1), Colorectal cancer, Radiotherapy and chemotherapy, Prognosis

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