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Molecular mechanism underlying the tumor-promoting functions of carcinoma-associated fibroblasts

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Tumor Biology

Abstract

Tumor microenvironment is composed of all the untransformed elements in the vicinity of tumor, mainly including a large number of stromal cells and extracellular matrix proteins, which play an active role in most solid tumor initiation and progression. Carcinoma-associated fibroblasts (CAFs), one of the most common stromal cell types in the tumor microenvironment, have been demonstrated to be involved in tumor growth, invasion, and metastasis. Therefore, they are becoming a promising target for anti-cancer therapies. In this review, we firstly summarize the current understandings of CAFs’ molecular biology, including the heterogeneous cellular origins and molecular markers, and then, we focus on reviewing their various tumor-promoting phenotypes involved in complex mechanisms, which can be summarized to the CAF-conveyed paracrine signals in tumor cells, cancer stem cells, and metastasis-initiating cancer cells, as well as the CAF-enhanced extrinsic tumor-promoting processes including angiogenesis, extracellular matrix remodeling, and tumor-related inflammation; finally, we describe the available directions of CAF-based target therapy and suggest research areas which need to be further explored so as to deepen the understanding of tumor evolution and provide new therapeutic targets for cancer treatment.

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Acknowledgments

This work was supported by grants from the National Natural Science Foundation of China (81402299, 81372334).

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  1. Department of Oncology, Jinan Central Hospital, Shandong University, Jinan, 250013, Shandong, China

    Yali Han, Yanwen Zhang & Yuping Sun

  2. Department of Surgery, Jinan Central Hospital, Shandong University, Jinan, 250013, Shandong, China

    Tanghong Jia

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  1. Yali Han
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Correspondence to Tanghong Jia or Yuping Sun.

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Han, Y., Zhang, Y., Jia, T. et al. Molecular mechanism underlying the tumor-promoting functions of carcinoma-associated fibroblasts. Tumor Biol. 36, 1385–1394 (2015). https://doi.org/10.1007/s13277-015-3230-8

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