Cancer cell‑expressed B7‑H3 regulates the differentiation of tumor‑associated macrophages in human colorectal carcinoma

  • Authors:
    • Yong Mao
    • Lujun Chen
    • Fengming Wang
    • Dawei Zhu
    • Xiaosong Ge
    • Dong Hua
    • Jing Sun
  • View Affiliations

  • Published online on: September 14, 2017     https://doi.org/10.3892/ol.2017.6935
  • Pages: 6177-6183
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Abstract

Co‑stimulatory molecule B7 homolog 3 protein (B7‑H3) has been described as an important tumor antigen in various human tumors. The exact role of B7‑H3 in tumor progression and its receptor are still ambiguous. The phenotype and the function of tumor‑associated macrophages (TAMs) in human solid tumors are complicated and could contribute to the shaping of the tumor microenvironment. In the present study, B7‑H3 expression and lymphocyte infiltration were investigated by immunohistochemistry in 117 colorectal carcinoma (CRC) patients. B7‑H3 expression was positively associated with the infiltrating density of macrophage in CRC tissues, and B7‑H3 expression and the infiltrating density of macrophages were negatively associated with the overall survival rate of patients. The putative B7‑H3 receptor was found on activated monocytes and macrophages, indicating the direct function of B7‑H3 signal on macrophages. Additional results revealed that during the differentiation of TAMs, B7‑H3 promoted the polarization of type 2 macrophages (M2s) and switch of the M1 phenotype to the M2 phenotype. Thus, B7‑H3 signaling promotes M2 differentiation via the putative receptor on monocytes and macrophages. Targeting the manipulation of TAMs through the B7‑H3 pathway may be valuable for the development of novel immunotherapeutic strategies against human CRC.
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November-2017
Volume 14 Issue 5

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Mao Y, Chen L, Wang F, Zhu D, Ge X, Hua D and Sun J: Cancer cell‑expressed B7‑H3 regulates the differentiation of tumor‑associated macrophages in human colorectal carcinoma. Oncol Lett 14: 6177-6183, 2017
APA
Mao, Y., Chen, L., Wang, F., Zhu, D., Ge, X., Hua, D., & Sun, J. (2017). Cancer cell‑expressed B7‑H3 regulates the differentiation of tumor‑associated macrophages in human colorectal carcinoma. Oncology Letters, 14, 6177-6183. https://doi.org/10.3892/ol.2017.6935
MLA
Mao, Y., Chen, L., Wang, F., Zhu, D., Ge, X., Hua, D., Sun, J."Cancer cell‑expressed B7‑H3 regulates the differentiation of tumor‑associated macrophages in human colorectal carcinoma". Oncology Letters 14.5 (2017): 6177-6183.
Chicago
Mao, Y., Chen, L., Wang, F., Zhu, D., Ge, X., Hua, D., Sun, J."Cancer cell‑expressed B7‑H3 regulates the differentiation of tumor‑associated macrophages in human colorectal carcinoma". Oncology Letters 14, no. 5 (2017): 6177-6183. https://doi.org/10.3892/ol.2017.6935