Tumor Biology

, Volume 37, Issue 3, pp 2805–2810 | Cite as

Fusobacterium nucleatum, inflammation, and immunity: the fire within human gut

  • Arif Bashir
  • Abid Yousuf Miskeen
  • Younis Mohammad Hazari
  • Syed Asrafuzzaman
  • Khalid Majid FaziliEmail author


Fusobacterium nucleatum is an identified proinflammatory autochthonous bacterium implicated in human colorectal cancer. It is also abundantly found in patients suffering from chronic gut inflammation (inflammatory bowel disease), consequently contributing to the pathogenesis of colorectal cancer. Majority of the studies have reported that colorectal tumors/colorectal adenocarcinomas are highly enriched with F. nucleatum compared to noninvolved adjacent colonic tissue. During the course of multistep development of colorectal cancer, tumors have evolved many mechanisms to resist the antitumor immune response. One of such favorite ploy is providing access to pathogenic bacteria, especially F. nucleatum in the colorectal tumor microenvironment, wherein both (colorectal tumors and F. nucleatum) exert profound effect on each other, consequently attracting tumor-permissive myeloid-derived suppressor cells, suppressing cytotoxic CD8+ T cells and inhibiting NK cell-mediated cancer cell killing. In this review, we have primarily focused on how this bug modulates the immune response, consequently rendering the antitumor immune cells inactive.


Fusobacterium nucleatum (F. nucleatumInflammatory bowel disease (IBD) Crohn’s disease (CD) Ulcerative colitis (UC) T cell immunoglobulin and ITIM (TIGIT) domain 



The authors gratefully acknowledge the support provided by University of Kashmir, Srinagar. The contributions made by Mudassir Habib, Samirul Bashir, and Nazia Hilal from the Department of Biotechnology, University of Kashmir are acknowledged.

Compliance with ethical standards

Conflicts of interest



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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Arif Bashir
    • 1
  • Abid Yousuf Miskeen
    • 2
  • Younis Mohammad Hazari
    • 1
  • Syed Asrafuzzaman
    • 3
  • Khalid Majid Fazili
    • 1
    Email author
  1. 1.Department of BiotechnologyUniversity of KashmirSrinagarIndia
  2. 2.Department of Human GeneticsPunjabi UniversityPatialaIndia
  3. 3.Department of ZoologyNorth Orissa UniversityOrissaIndia

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