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Zhao YX, Cui Y, Li XH, Yang WH, An SX, Cui JX, Zhang MY, Lu JK, Zhang X, Wang XM, Bao LL, Zhao PW. Human β-defensin-1 affects the mammalian target of rapamycin pathway and autophagy in colon cancer cells through long non-coding RNA TCONS_00014506. World J Gastrointest Oncol 2024; 16:1465-1478. [PMID: 38660658 PMCID: PMC11037056 DOI: 10.4251/wjgo.v16.i4.1465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/15/2024] [Accepted: 02/18/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND Colorectal cancer has a low 5-year survival rate and high mortality. Human β-defensin-1 (hBD-1) may play an integral function in the innate immune system, contributing to the recognition and destruction of cancer cells. Long non-coding RNAs (lncRNAs) are involved in the process of cell differentiation and growth. AIM To investigate the effect of hBD-1 on the mammalian target of rapamycin (mTOR) pathway and autophagy in human colon cancer SW620 cells. METHODS CCK8 assay was utilized for the detection of cell proliferation and determination of the optimal drug concentration. Colony formation assay was employed to assess the effect of hBD-1 on SW620 cell proliferation. Bioinformatics was used to screen potentially biologically significant lncRNAs related to the mTOR pathway. Additionally, p-mTOR (Ser2448), Beclin1, and LC3II/I expression levels in SW620 cells were assessed through Western blot analysis. RESULTS hBD-1 inhibited the proliferative ability of SW620 cells, as evidenced by the reduction in the colony formation capacity of SW620 cells upon exposure to hBD-1. hBD-1 decreased the expression of p-mTOR (Ser2448) protein and increased the expression of Beclin1 and LC3II/I protein. Furthermore, bioinformatics analysis identified seven lncRNAs (2 upregulated and 5 downregulated) related to the mTOR pathway. The lncRNA TCONS_00014506 was ultimately selected. Following the inhibition of the lncRNA TCONS_00014506, exposure to hBD-1 inhibited p-mTOR (Ser2448) and promoted Beclin1 and LC3II/I protein expression. CONCLUSION hBD-1 inhibits the mTOR pathway and promotes autophagy by upregulating the expression of the lncRNA TCONS_00014506 in SW620 cells.
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Affiliation(s)
- Yu-Xin Zhao
- Department of Anesthesiology, Inner Mongolia Chest Hospital, The Fourth Hospital, Hohhot 010035, Inner Mongolia Autonomous Region, China
| | - Yan Cui
- College of Humanities and Education, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
| | - Xin-Hong Li
- Department of Radiotherapy, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
| | - Wen-Hong Yang
- School of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
| | - Shi-Xiang An
- School of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
| | - Jia-Xian Cui
- School of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
| | - Min-Yu Zhang
- School of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
| | - Jing-Kun Lu
- School of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
| | - Xuan Zhang
- School of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
| | - Xiu-Mei Wang
- Department of Medical Oncology, The Affiliated Cancer Hospital of Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China
| | - Li-Li Bao
- School of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
| | - Peng-Wei Zhao
- School of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
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