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Li Z, Li Y, Chu X, Du K, Tang Y, Xie Z, Yu M, Deng J, Lv H, Zhang W, Wang Z, Meng L, Yuan Y. Novel mutations in FLVCR1 cause tremors, sensory neuropathy with retinitis pigmentosa. Neuropathology 2024; 44:87-95. [PMID: 37469134 DOI: 10.1111/neup.12936] [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: 12/28/2022] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/21/2023]
Abstract
The mutations of the feline leukemia virus subgroup C receptor-related protein 1 (FLVCR1) cause ataxia with retinitis pigmentosa. Recent studies indicated a large variation in the phenotype of FLVCR1-associated diseases. In this report, we describe an adult male who manifested first with tremors in his third decade, followed by retinitis pigmentosa, sensory ataxia, and sensory neuropathy in his fourth decade. While retinitis pigmentosa and sensory ataxia are well-recognized features of FLVCR1-associated disease, tremor is rarely described. Whole-exome sequencing revealed novel compound heterozygous pathogenic FLVCR1 variants: c.498 G > A; p.(Trp166*) and c.369 T > G; p.(Phe123Leu). In addition, we have highlighted the ultrastructural abnormalities of the sural biopsy in this patient.
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Affiliation(s)
- Zhenyu Li
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Yize Li
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Xujun Chu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Kang Du
- Department of Neurology, Qujing First People's Hospital, Qujing, China
| | - Yuwei Tang
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Zhiying Xie
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Meng Yu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Jianwen Deng
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - He Lv
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Wei Zhang
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory for Neurovascular Disease Discovery, Peking University First Hospital, Beijing, China
- Key Laboratory for Neuroscience, National Health Commission of the People's Republic of China, Peking University, Beijing, China
| | - Lingchao Meng
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory for Neurovascular Disease Discovery, Peking University First Hospital, Beijing, China
- Key Laboratory for Neuroscience, National Health Commission of the People's Republic of China, Peking University, Beijing, China
| | - Yun Yuan
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory for Neurovascular Disease Discovery, Peking University First Hospital, Beijing, China
- Key Laboratory for Neuroscience, National Health Commission of the People's Republic of China, Peking University, Beijing, China
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Liu XY, Wang YH, Wang J, Quan JK, Li XD, Guan KP. The role of CSE1L silencing in the regulation of proliferation and apoptosis via the AMPK/mTOR signaling pathway in chronic myeloid leukemia. HEMATOLOGY (AMSTERDAM, NETHERLANDS) 2023; 28:1-9. [PMID: 36652402 DOI: 10.1080/16078454.2022.2161201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVES Chromosome segregation 1-like (CSE1L) is abundant and strongly expressed in solid tumors. However, the expression and role of CSE1L in chronic myeloid leukemia(CML) remain largely unknown. MATERIALS AND METHODS The relative expression levels of CSE1L in bone marrow granulocytes from patients with primary CML and non-hematologic controls were measured by flow cytometry. Cell counting kit-8 analysis, DNA Content Quantitation Assay, and Annexin V-PE/7-AAD staining were applied to assess the effects of CSE1L knockdown on cell proliferation, cell cycle progression, and apoptosis. RESULTS Elevated expression of CSE1L was detected in bone marrow granulocytes of patients with primary CML. In the CML cell line K562 cells, CSE1L knockdown impaired cell proliferation blocked the cell cycle shift from G0/G1 phase to the S phase, and promoted apoptosis. Knockdown of CSE1L reduced Bcl-2 protein expression and increased Bax protein expression. Meanwhile, knockdown of CSE1L enhanced the expression of phospho-AMPK protein and decreased the expression of phospho-mTOR protein. The expression of total AMPK and mTOR proteins was not affected. In addition, CSE1L expression levels were decreased in imatinib-treated K562 cells. CONCLUSIONS CSE1L plays a pivotal role in K562 cell survival and growth. These functions may be partially dependent on the AMPK/mTOR signaling pathway to achieve. In addition, CSE1L may have had a future impact on the treatment of CML patients.
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Affiliation(s)
- Xiao-Yu Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Yong-Hong Wang
- Laboratory Department, The Second Hospital of Shanxi Medical University, Taiyuan, People's Republic of China
| | - Jing Wang
- Shanxi Medical University, Taiyuan, People's Republic of China
| | - Ji-Kun Quan
- Shanxi Medical University, Taiyuan, People's Republic of China
| | - Xu-Dong Li
- Shanxi Medical University, Taiyuan, People's Republic of China
| | - Kun-Ping Guan
- Laboratory Department, The Second Hospital of Shanxi Medical University, Taiyuan, People's Republic of China
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Roles of oncogenes in esophageal squamous cell carcinoma and their therapeutic potentials. Clin Transl Oncol 2023; 25:578-591. [PMID: 36315334 DOI: 10.1007/s12094-022-02981-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 10/10/2022] [Indexed: 11/05/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) is the most common type of esophageal cancer (EC) in Asia. It is a malignant digestive tract tumor with abundant gene mutations. Due to the lack of specific diagnostic markers and early cancer screening markers, most patients are diagnosed at an advanced stage. Genetic and epigenetic changes are closely related to the occurrence and development of ESCC. Here, We review the activation of proto-oncogenes into oncogenes through gene mutation and gene amplification in ESCC from a genetic and epigenetic genome perspective, We also discuss the specific regulatory mechanisms through which these oncogenes mainly affect the biological function and occurrence and development of ESCC through specific regulatory mechanisms. In addition, we summarize the clinical application value of these oncogenes is summarized, and it provides a feasible direction for clinical use as potential therapeutic and diagnostic markers.
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