Cancer-associated adipocytes exhibit distinct phenotypes and facilitate tumor progression in pancreatic cancer

被引:49
作者
Cai, Zhiwei [1 ,2 ]
Liang, Yun [1 ,2 ]
Xing, Chun [3 ]
Wang, Hongwei [1 ,2 ]
Hu, Pengfei [1 ,2 ]
Li, Jialin [1 ,2 ]
Huang, Haiyan [3 ]
Wang, Wei [1 ,2 ]
Jiang, Chongyi [1 ,2 ]
机构
[1] Fudan Univ, Huadong Hosp, Dept Gen Surg, 221 West Yanan Rd, Shanghai 200040, Peoples R China
[2] Shanghai Key Lab Clin Geriatr Med, 221 West Yanan Rd, Shanghai 200040, Peoples R China
[3] Fudan Univ, Chinese Minist Educ, Key Lab Metab & Mol Med, Shanghai 200032, Peoples R China
关键词
pancreatic cancer; adipocyte; tumor microenvironment; delipidation; dedifferentiation; transcriptome; ADIPOSE-TISSUE; FIBROBLASTS; DEDIFFERENTIATION; DESMOPLASIA; OBESITY; MECHANISMS; CONTRIBUTE; CROSSTALK; ISOFORM; PATHWAY;
D O I
10.3892/or.2019.7365
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Adipocyte infiltration in pancreatic cancer (PC) has been demonstrated to be independently associated with PC risk and an active contributor to tumor progression. However, to date, little is known about these unique pancreatic tumor-surrounding adipocytes, or their response to cancer cells. The present study utilized an in vitro indirect coculture model in which the phenotypic changes of adipocytes following exposure to PC cells were directly observed. RNA-sequencing was performed on 3T3-L1 adipocytes cultured with or without Panc-1 cancer cells, and significant changes were identified at the transcriptional level. In terms of delipidation and the impaired function of glucose and lipid metabolism, coculture with tumor cells resulted in an altered metabolic phenotype in mature adipocytes. In co-cultured adipocytes, the appearance of fibroblast-like cells was observed, and the mesenchymal cell differentiation pathway was enriched following the integrated analysis into the transcriptome. In addition, reverse transcription-quantitative PCR analyses of co-cultured adipocytes revealed a loss in gene expression of mature adipocyte markers, and a gain in gene expression of fibroblast-specific markers. It was also confirmed that newly generated cancer-associated adipocytes could facilitate the invasive capacities of the tumor, and may contribute to PC stromal remodeling. The present study supports a novel concept that reprogramming of stromal adipocytes orchestrated by PC cells may generate cancer-associated adipocytes with activated phenotypes, which may ultimately drive pancreatic tumor progression.
引用
收藏
页码:2537 / 2549
页数:13
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