Promoting effect of Bifidobacterium pseudocatenulatum W112 on immune checkpoint blockade therapy

  • LYU Mengxin ,
  • WU Jiangtao ,
  • ZHAO Jingqi ,
  • JIA Longgang ,
  • WANG Yanping ,
  • GENG Weitao
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  • (College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China)

Received date: 2022-05-20

  Revised date: 2022-06-10

  Online published: 2023-04-14

Abstract

In this study, we analyzed the promoting effect of Bifidobacterium pseudocatenulatum W112 on PD-1 antibody immunotherapy. The melanoma mouse model was established by subcutaneous injection of B16-F10 melanoma cells into the back of mice. Then the tumor bearing mice were treated with PD-1 antibody, intragastric administration of B. pseudocatenulatum W112 and their combination. Results showed that intragastric administration of B. pseudocatenulatum W112 increased the tumor inhibition rate in PD-1 antibody treatment, including the increasing of survival rate of mice, infiltration of CD8+T cells in tumor tissues, and the enrichment of interleukin-12 (IL-12) and interferon-γ (IFN-γ) in tumor tissues. The metagenome sequencing analysis of the microbiota in mice feces showed that intragastric administration of B. pseudocatenulatum W112 increased the diversity of mouse intestinal flora, promoted the enrichment of beneficial bacteria and reduced the enrichment of harmful bacteria. This study shows that B. pseudocatenulatum W112 has potential application in promoting immune checkpoint therapy.

Cite this article

LYU Mengxin , WU Jiangtao , ZHAO Jingqi , JIA Longgang , WANG Yanping , GENG Weitao . Promoting effect of Bifidobacterium pseudocatenulatum W112 on immune checkpoint blockade therapy[J]. Food and Fermentation Industries, 2023 , 49(6) : 10 -17 . DOI: 10.13995/j.cnki.11-1802/ts.032391

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