PMID- 30534157 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1687-966X (Print) IS - 1687-9678 (Electronic) VI - 2018 DP - 2018 TI - Pyroptosis of MCF7 Cells Induced by the Secreted Factors of hUCMSCs. PG - 5912194 LID - 10.1155/2018/5912194 [doi] LID - 5912194 AB - Human umbilical cord mesenchymal stem cells (hUCMSCs) are superior to other sources of mesenchymal stem/stromal cells (MSCs), and they are used as a novel tool for cell-based cancer therapy. However, the mechanism underlying hUCMSC-induced cancer cell death is not clear. In the present study, we aimed to evaluate the effect of secreted factors of hUCMSCs on the breast cancer cell line MCF7 by exposing them to the conditioned medium (CM) of hUCMSCs. We evaluated the morphological changes, cell viability, cell cycle, apoptosis, DNA fragmentation, and interleukin-1beta (IL-1beta) secretion of CM-exposed MCF7 cells. The results showed that the secreted factors of hUCMSCs could cause MCF7 cell death by inducing pyroptosis. We also sequenced the total RNA, and the differentially expressed genes (DEGs) were subjected to the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. A total of 2597 (1822 upregulated and 775 downregulated) genes were identified and 14 pathways were significantly enriched. The results showed that the expression of the pyroptosis-related genes NLRP1 and CASP4 and the inflammation-related pathways changed significantly in MCF7 cells exposed to the CM. To the best of our knowledge, this study is the first to report that the secreted factors of hUCMSCs can cause MCF7 cell pyroptosis. Furthermore, it is the first to examine the global gene expression in MCF7 cells exposed to CM. These results will provide valuable information for further studies on the mechanism of MCF7 cell pyroptosis induced by the secreted factors of hUCMSCs. It will also help understand the effect of hUCMSCs on cell-based breast cancer therapy. FAU - Jiao, Yang AU - Jiao Y AD - School of Medicine, Yunnan University, Kunming, 650091 Yunnan, China. AD - Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Molecular and Clinical medicine, Kunming Medical University, Kunming, 650500 Yunnan, China. FAU - Zhao, Hongbo AU - Zhao H AD - Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Molecular and Clinical medicine, Kunming Medical University, Kunming, 650500 Yunnan, China. FAU - Chen, Guodong AU - Chen G AD - School of Medicine, Yunnan University, Kunming, 650091 Yunnan, China. FAU - Sang, Xiongbo AU - Sang X AD - School of Medicine, Yunnan University, Kunming, 650091 Yunnan, China. FAU - Yang, Luhan AU - Yang L AD - School of Medicine, Yunnan University, Kunming, 650091 Yunnan, China. FAU - Hou, Zongliu AU - Hou Z AUID- ORCID: 0000-0003-3536-7550 AD - Yan'an Hospital of Kunming City, Kunming, 650051 Yunnan, China. FAU - Si, Wei AU - Si W AUID- ORCID: 0000-0003-0861-0682 AD - Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, 650500 Yunnan, China. FAU - Zheng, Bingrong AU - Zheng B AUID- ORCID: 0000-0001-9620-286X AD - School of Medicine, Yunnan University, Kunming, 650091 Yunnan, China. LA - eng PT - Journal Article DEP - 20181111 PL - United States TA - Stem Cells Int JT - Stem cells international JID - 101535822 PMC - PMC6252231 EDAT- 2018/12/12 06:00 MHDA- 2018/12/12 06:01 PMCR- 2018/11/11 CRDT- 2018/12/12 06:00 PHST- 2018/06/14 00:00 [received] PHST- 2018/08/22 00:00 [revised] PHST- 2018/09/16 00:00 [accepted] PHST- 2018/12/12 06:00 [entrez] PHST- 2018/12/12 06:00 [pubmed] PHST- 2018/12/12 06:01 [medline] PHST- 2018/11/11 00:00 [pmc-release] AID - 10.1155/2018/5912194 [doi] PST - epublish SO - Stem Cells Int. 2018 Nov 11;2018:5912194. doi: 10.1155/2018/5912194. eCollection 2018.