Abstract
Background
Cancer-associated fibroblasts (CAFs), one of the main members of stromal cells in tumor microenvironment are proposed to play a central role in promoting tumor metastasis. It is unclear whether and how CAFs mediates tumor metastasis or chemoresistance in human ovarian cancer.
Methods
CAFs were extracted from human ovarian cancer tissues (OCs) of patients with different kinds of histological types.
Results
We found that CAFs showed more aggressive potency than those tumor cells, both of which were isolated from the same ovarian cancer specimen. Moreover, when co-cultured with CAFs, cell migration abilities of ovarian cancer cells (SKOV3, OVCAR3 and HEY) were significantly increased. Next, we preliminarily detected a higher CAFs density in sections of metastatic lesions than those in primary tumor site of primary OCs clinically. However, no significant difference of stromal derived factors-1α (SDF-1α) production from CAFs was found between primary and metastatic lesions. Additionally, in contrast with tumor cells, CAFs exhibited obvious apoptosis resistance when treated with cisplatin. Furthermore, we found that cisplatin-induced cytotoxicity and apoptosis were significantly inhibited by co-cultured with recombinant human SDF-1α in SKOV3 in a time and dose-dependent manner, and this effect was suppressed by the CXCR4 antagonist AMD3100.
Conclusions
CAFs might be involved in the malignant metastasis in human ovarian cancer through promoting cell migration in tumor cells. And their resistance to cytotoxic agents might be mediated by paracrine SDF-1α/CXCR4 signaling in ovarian cancer.
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Data availability
The data generated or analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported by a grant from the National Natural Science Foundation of China (NSFC NO. 81072120), Chongqing Science and Technology Commission Project (cstc2017jcyjAX0194), Hospital-level Incubation Project of The Fifth People's Hospital of Shanghai, Fudan University (2019WYFY05).
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by JD and KS. The first draft of the manuscript was written by JD and revised by LY. All authors read and approved the final manuscript.
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This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Ethics Committee of Chongqing Medical University.
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Dai, Jm., Sun, K., Li, C. et al. Cancer-associated fibroblasts contribute to cancer metastasis and apoptosis resistance in human ovarian cancer via paracrine SDF-1α. Clin Transl Oncol 25, 1606–1616 (2023). https://doi.org/10.1007/s12094-022-03054-9
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DOI: https://doi.org/10.1007/s12094-022-03054-9