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Matsumoto F, Yokogami K, Yamada A, Moritake H, Watanabe T, Yamashita S, Sato Y, Takeshima H. Targeting cholesterol biosynthesis for AT/RT: comprehensive expression analysis and validation in newly established AT/RT cell line. Hum Cell 2024; 37:523-530. [PMID: 38329694 DOI: 10.1007/s13577-023-01022-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 12/16/2023] [Indexed: 02/09/2024]
Abstract
Atypical teratoid/rhabdoid (AT/RT) is a rare and highly malignant tumor of the central nervous system (CNS). It is most commonly found in children less than 5 years of age and is associated with inactivation of loss of function of SMARCB1/INI1. An experimental model for AT/RT is necessary to develop new and effective therapies. We established a patient-derived new cell line (MZ611ATRT), which showed loss of BAF-47. MZ611ATRT genetically features somatic heterozygous deletion of SMARCB1 and single nucleotide deletion of the residual allele, exon 5 ([c.541delC]), resulting in a stop codon at codon 954 by frameshift. We assessed the RNA-sequencing data of the other two AT/RT cell lines with forced expression of SMARCB1 available from public databases. We found SMARCB1 overexpression significantly down-regulates the expression of a group of enzymes related to cholesterol biosynthesis. Simvastatin was highly sensitive against MZ611ATRT cells and induced apoptosis (IC50 was 3.098 µM for MZ611ATRT, 41.88uM for U-87 MG, 23.34uM for IOMM-Lee, and 18.12uM for U-251 MG.). Pathways involved in cholesterol biosynthesis may be new targets for adjuvant therapy of AT/RT.
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Affiliation(s)
- Fumitaka Matsumoto
- Department of Neurosurgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan.
| | - Kiyotaka Yokogami
- Department of Neurosurgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Ai Yamada
- Division of Pediatrics, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Hiroshi Moritake
- Division of Pediatrics, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Takashi Watanabe
- Department of Neurosurgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Shinji Yamashita
- Department of Neurosurgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Yuichiro Sato
- Division of Pediatrics, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
- Department of Diagnostic Pathology, University of Miyazaki Hospital, University of Miyazaki, Miyazaki, Japan
| | - Hideo Takeshima
- Department of Neurosurgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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