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LncRNA PTCSC3 Inhibits Tumor Growth and Cancer Cell Stemness in Gastric Cancer by Interacting with lncRNA Linc-pint

Authors Hong L, Wang H, Wang J, Wei S, Zhang F, Han J, Liu Y, Ma M, Liu C, Xu Y, Jiang D

Received 17 September 2019

Accepted for publication 26 October 2019

Published 11 December 2019 Volume 2019:11 Pages 10393—10399


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Eileen O'Reilly

Lei Hong,1 Haijuan Wang,2 Junyan Wang,1 Suju Wei,1 Fan Zhang,1 Jing Han,1 Yan Liu,1 Minting Ma,1 Chengyuan Liu,1 Yu Xu,1 Da Jiang1

1Department of Medical Oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, People’s Republic of China; 2Examination and Training Center Health and Family Planning Commission of Hebei, Shijiazhuang, Hebei 050051, People’s Republic of China

Correspondence: Da Jiang
Department of Medical Oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, People’s Republic of China
Tel +86 311 8609 5672

Background: The tumor suppressor role of lncRNA PTCSC3 has been reported in papillary thyroid carcinoma, our study aimed to investigate its involvement in gastric cancer.
Methods: Tumor tissues and adjacent healthy tissues were collected from gastric cancer patients. Expression of PTCSC3 and lncRNA Linc-pint in these tissues was analyzed by RT-qPCR. The interaction between PTCSC3 and Linc-pint was analyzed by overexpression experiments. Cell proliferation and stemness were analyzed by CCK-8 assay and cell stemness assay, respectively.
Results: PTCSC3 and lncRNA Linc-pint were both downregulated in tumor tissues than in adjacent healthy tissues of gastric cancer patients. Low levels of PTCSC3 and Linc-pint were closely correlated with poor survival. PTCSC3 and Linc-pint overexpression inhibited tumor growth and cancer cell stemness, while Linc-pint knockdown played an opposite role an attenuated the effects of PTCSC3 overexpression. Expression levels of PTCSC3 and Linc-pint were significantly correlated in tumor tissues but not in adjacent healthy tissues. Overexpression of PTCSC3 and Linc-pint upregulated the expression of each other.
Conclusion: PTCSC3 inhibits tumor growth and cancer cell stemness in gastric cancer by interacting with lncRNA Linc-pint.

Keywords: gastric cancer, lncRNA PTCSC3, lncRNA Linc-pint, growth, stemness

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