1
|
Ding Y, Ge Y, Wang D, Liu Q, Sun S, Hua L, Deng J, Luan S, Cheng H, Xie Q, Gong Y, Zhang T. LncRNA-IMAT1 Promotes Invasion of Meningiomas by Suppressing KLF4/ hsa-miR22-3p/Snai1 Pathway. Mol Cells 2022; 45:388-402. [PMID: 35680373 PMCID: PMC9200663 DOI: 10.14348/molcells.2022.2232] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 12/18/2021] [Accepted: 12/26/2021] [Indexed: 11/27/2022] Open
Abstract
Malignant meningiomas often show invasive growth that makes complete tumor resection challenging, and they are more prone to recur after radical resection. Invasive meningioma associated transcript 1 (IMAT1) is a long noncoding RNA located on Homo sapiens chromosome 17 that was identified by our team based on absolute expression differences in invasive and non-invasive meningiomas. Our studies indicated that IMAT1 was highly expressed in invasive meningiomas compared with non-invasive meningiomas. In vitro studies showed that IMAT1 promoted meningioma cell invasion through the inactivation of the Krüppel-like factor 4 (KLF4)/hsa-miR22-3p/Snai1 pathway by acting as a sponge for hsa-miR22-3p, and IMAT1 knockdown effectively restored the tumor suppressive properties of KLF4 by preserving its tumor suppressor pathway. In vivo experiments confirmed that IMAT1 silencing could significantly inhibit the growth of subcutaneous tumors and prolong the survival period of tumor-bearing mice. Our findings demonstrated that the high expression of IMAT1 is the inherent reason for the loss of the tumor suppressive properties of KLF4 during meningioma progression. Therefore, we believe that IMAT1 may be a potential biological marker and treatment target for meningiomas.
Collapse
Affiliation(s)
- Yaodong Ding
- Department of Laboratory Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Yu Ge
- Department of Laboratory Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Daijun Wang
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Qin Liu
- Department of Laboratory Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Shuchen Sun
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Lingyang Hua
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Jiaojiao Deng
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Shihai Luan
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Haixia Cheng
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Qing Xie
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Ye Gong
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Tao Zhang
- Department of Laboratory Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| |
Collapse
|