Tumor Biology

, Volume 37, Issue 12, pp 15883–15891 | Cite as

IL-17A produced by peritoneal macrophages promote the accumulation and function of granulocytic myeloid-derived suppressor cells in the development of colitis-associated cancer

  • Yue Zhang
  • Juan Wang
  • Wenxin Wang
  • Jie Tian
  • Kai Yin
  • Xinyi Tang
  • Jie Ma
  • Huaxi Xu
  • Shengjun Wang
Original Article


It is widely acknowledged that a close relationship is between inflammation and colon cancer. Interleukin (IL)-17A and myeloid-derived suppressor cells (MDSCs) play an important role in the development of colitis-associated cancer (CAC). However, the precise changes of IL-17, MDSCs, and Th17 cells during the CAC progression have not been observed in the colorectal chronic inflammation-dependent tumor. In this study, we found the level of IL-17 was increased in pathogenic colon site during the early stage of CAC model. Further experiments showed the increased IL-17 was probably secreted by peritoneal macrophages when exposed to dextran sulfate sodium (DSS). In vitro, we found that IL-17 could enhance survival and suppressive function of granulocytic (G)-MDSCs, the subset associated with inflammation. With the development of CAC, the proportions of MDSCs and Th17 cells were continuously increased by the high level of IL-17 produced by macrophages. However, the increase of MDSCs was earlier and acuter than that of Th17 cells. Selective depletion of MDSCs not only slowed down CAC process but also significantly reduce Th17 cells in vivo. Thereafter, we demonstrated that in the development of CAC, IL-17 secreted by peritoneal macrophages could promote the accumulation of G-MDSCs, then the proportion of Th17 cells was increased, and finally promote the development of CAC.


IL-17  Th17 cells Granulocytic myeloid-derived suppressor cells Colitis-associated cancer 



This work was supported by the Specialized Project for Clinical Medicine of Jiangsu Province (Grant No. BL2014065), Natural Science Foundation of Jiangsu (Grant No. BK20150533), National Natural Science Foundation of China (Grant No. 31170849, 31470881, 81601424), Project funded by China Postdoctoral Science Foundation (Grant No. 2016M590423), Science and Technology Support Program (Social Development) of Zhenjiang (Grant No. SH2014039), Jiangsu Province “333” Project (Grant No. BRA2015197), Summit of the Six Top Talents Program of Jiangsu Province (Grant No. 2015-WSN-116), Jiangsu University Science Foundation (Grant Nos. 11JDG093, FCJJ2015022, 15JDG070), Jiangsu Key Laboratory of Laboratory Medicine Foundation (Grant No. JSKLM-2014-013), Medical Science and Technology Foundation of Jiangsu University (Grant No. JLY20140004), and Priority Academic Program Development of Jiangsu Higher Education Institutions.

Compliance with ethical standards

Conflicts of interest



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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2016

Authors and Affiliations

  • Yue Zhang
    • 1
  • Juan Wang
    • 2
  • Wenxin Wang
    • 2
  • Jie Tian
    • 2
  • Kai Yin
    • 3
  • Xinyi Tang
    • 1
  • Jie Ma
    • 2
  • Huaxi Xu
    • 2
  • Shengjun Wang
    • 1
    • 2
  1. 1.Department of Laboratory Medicine, The Affiliated People’s HospitalJiangsu UniversityZhenjiangChina
  2. 2.Institute of Laboratory Medicine, Jiangsu Key Laboratory of Laboratory MedicineJiangsu UniversityZhenjiangChina
  3. 3.Department of General Surgery, The Affiliated HospitalJiangsu UniversityZhenjiangChina

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