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Yao H, Zhao H, Du Y, Zhang Y, Li Y, Zhu H. Sex-related differences in SIRT3-mediated mitochondrial dynamics in renal ischemia/reperfusion injury. Transl Res 2024; 270:1-12. [PMID: 38556109 DOI: 10.1016/j.trsl.2024.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 03/05/2024] [Accepted: 03/14/2024] [Indexed: 04/02/2024]
Abstract
The prevalence of renal ischemia/reperfusion injury (IRI) in premenopausal women is considerably lower than that in age-matched men. This suggests that sex-related differences in mitochondrial function and homeostasis may contribute to sexual dimorphism in renal injury, though the mechanism remains unclear. Mouse model of unilateral left renal IRI with contralateral kidney enucleation, Ovariectomy in female mice, and a human embryonic kidney (HEK) cell model of hypoxia-reoxygenation were used to study how estrogen affects the sexual dimorphism of renal IRI through SIRT3 in vitro and in vivo, respectively. Here, we demonstrate differential expression of renal SIRT3 may induce sexual dimorphism in IRI using the renal IRI model. Higher SIRT3 level in female mice was associated with E2-induced protection of renal tubular epithelium, reduced mitochondrial reactive oxygen species (ROS), and IRI resistance. In hypoxia-reoxygenated HEK cells, SIRT3 knockdown increased oxidative stress, shifted the interconnected mitochondrial network toward fission, exacerbated hypoxia/reoxygenation-induced endoplasmic reticulum stress (ERS), and abolished the protective effects of E2 on IRI. Mechanistically, the SIRT3 level is E2-dependent and that E2 increases the SIRT3 protein level via estrogen receptor. SIRT3 targeted an i-AAA protease, yeast mitochondrial AAA metalloprotease (YME1L1), and hydrolyzed long optic atrophy 1 (L-OPA) to short-OPA1 (S-OPA1) by deacetylating YME1L1, regulating mitochondrial dynamics toward fusion to reduce oxidative stress and ERS. These findings explored the mechanism by how estrogen alleviates renal IRI and providing a basis for potential therapeutic interventions targeting SIRT3.
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Affiliation(s)
- Hanlin Yao
- Zhongnan Hospital, Wuhan University, Wuhan 430060, Hubei, China
| | - Hongchao Zhao
- Department of Urology, Renmin Hospital, Wuhan University, Wuhan 430060, Hubei, China
| | - Yang Du
- Department of Urology, Renmin Hospital, Wuhan University, Wuhan 430060, Hubei, China
| | - Ye Zhang
- Department of Urology, Renmin Hospital, Wuhan University, Wuhan 430060, Hubei, China
| | - Yanze Li
- Department of Urology, Renmin Hospital, Wuhan University, Wuhan 430060, Hubei, China
| | - Hengcheng Zhu
- Department of Urology, Renmin Hospital, Wuhan University, Wuhan 430060, Hubei, China; Institute of Urologic Disease, Renmin Hospital, Wuhan University, Wuhan 430060, Hubei, China.
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2
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Wang JM, Zhang FH, Liu ZX, Tang YJ, Li JF, Xie LP. Cancer on motors: How kinesins drive prostate cancer progression? Biochem Pharmacol 2024; 224:116229. [PMID: 38643904 DOI: 10.1016/j.bcp.2024.116229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 04/02/2024] [Accepted: 04/18/2024] [Indexed: 04/23/2024]
Abstract
Prostate cancer causes numerous male deaths annually. Although great progress has been made in the diagnosis and treatment of prostate cancer during the past several decades, much about this disease remains unknown, especially its pathobiology. The kinesin superfamily is a pivotal group of motor proteins, that contains a microtubule-based motor domain and features an adenosine triphosphatase activity and motility characteristics. Large-scale sequencing analyses based on clinical samples and animal models have shown that several members of the kinesin family are dysregulated in prostate cancer. Abnormal expression of kinesins could be linked to uncontrolled cell growth, inhibited apoptosis and increased metastasis ability. Additionally, kinesins may be implicated in chemotherapy resistance and escape immunologic cytotoxicity, which creates a barrier to cancer treatment. Here we cover the recent advances in understanding how kinesins may drive prostate cancer progression and how targeting their function may be a therapeutic strategy. A better understanding of kinesins in prostate cancer tumorigenesis may be pivotal for improving disease outcomes in prostate cancer patients.
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Affiliation(s)
- Jia-Ming Wang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Feng-Hao Zhang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Zi-Xiang Liu
- Department of Urology, The First Affiliated Hospital of Ningbo University, Ningbo, People's Republic of China
| | - Yi-Jie Tang
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Jiang-Feng Li
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China.
| | - Li-Ping Xie
- Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China.
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Dai C, Cui X, Wang J, Dong B, Gao H, Cheng M, Jiang F. CX‑5461 potentiates imatinib‑induced apoptosis in K562 cells by stimulating KIF1B expression. Exp Ther Med 2024; 27:107. [PMID: 38356673 PMCID: PMC10865453 DOI: 10.3892/etm.2024.12395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 11/29/2023] [Indexed: 02/16/2024] Open
Abstract
The selective RNA polymerase I inhibitor CX-5461 has been shown to be effective in treating some types of leukemic disorders. Emerging evidence suggests that combined treatments with CX-5461 and other chemotherapeutic agents may achieve enhanced effectiveness as compared with monotherapies. Currently, pharmacodynamic properties of the combination of CX-5461 with tyrosine kinase inhibitors remain to be explored. The present study tested whether CX-5461 could potentiate the effect of imatinib in the human chronic myeloid leukemia cell line K562, which is p53-deficient. It was demonstrated that CX-5461 at 100 nM, which was non-cytotoxic in K562 cells, potentiated the pro-apoptotic effect of imatinib. Mechanistically, the present study identified that the upregulated expression of kinesin family member 1B (KIF1B) gene might be involved in mediating the pro-apoptotic effect of imatinib/CX-5461 combination. Under the present experimental settings, however, neither CX-5461 nor imatinib alone exhibited a significant effect on KIF1B expression. Moreover, using other leukemic cell lines, it was demonstrated that regulation of KIF1B expression by imatinib/CX-5461 was not a ubiquitous phenomenon in leukemic cells and should be studied in a cell type-specific manner. In conclusion, the results suggested that the synergistic interaction between CX-5461 and imatinib may be of potential clinical value for the treatment of tyrosine kinase inhibitor-resistant chronic myeloid leukemia.
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Affiliation(s)
- Chaochao Dai
- Shandong Key Laboratory of Cardiovascular Proteomics and Department of Geriatric Medicine, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Xiaopei Cui
- Shandong Key Laboratory of Cardiovascular Proteomics and Department of Geriatric Medicine, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Jie Wang
- Shandong Key Laboratory of Cardiovascular Proteomics and Department of Geriatric Medicine, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Bo Dong
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
| | - Haiqing Gao
- Shandong Key Laboratory of Cardiovascular Proteomics and Department of Geriatric Medicine, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Mei Cheng
- Shandong Key Laboratory of Cardiovascular Proteomics and Department of Geriatric Medicine, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Fan Jiang
- Shandong Key Laboratory of Cardiovascular Proteomics and Department of Geriatric Medicine, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
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Jiang Q, Wang H, Qiao Z, Hou Y, Sui Z, Zhao B, Liang Z, Jiang B, Zhang Y, Zhang L. Metal organic layers enabled cell surface engineering coupling biomembrane fusion for dynamic membrane proteome profiling. Chem Sci 2023; 14:11727-11736. [PMID: 37920345 PMCID: PMC10619618 DOI: 10.1039/d3sc03725h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/30/2023] [Indexed: 11/04/2023] Open
Abstract
Systematically dissecting the highly dynamic and tightly communicating membrane proteome of living cells is essential for the system-level understanding of fundamental cellular processes and intricate relationship between membrane-bound organelles constructed through membrane traffic. While extensive efforts have been made to enrich membrane proteins, their comprehensive analysis with high selectivity and deep coverage remains a challenge, especially at the living cell state. To address this problem, we developed the cell surface engineering coupling biomembrane fusion method to map the whole membrane proteome from the plasma membrane to various organelle membranes taking advantage of the exquisite interaction between two-dimensional metal-organic layers and phospholipid bilayers on the membrane. This approach, which bypassed conventional biochemical fractionation and ultracentrifugation, facilitated the enrichment of membrane proteins in their native phospholipid bilayer environment, helping to map the membrane proteome with a specificity of 77% and realizing the deep coverage of the HeLa membrane proteome (5087 membrane proteins). Furthermore, membrane N-phosphoproteome was profiled by integrating the N-phosphoproteome analysis strategy, and the dynamic membrane proteome during apoptosis was deciphered in combination with quantitative proteomics. The features of membrane protein N-phosphorylation modifications and many differential proteins during apoptosis associated with mitochondrial dynamics and ER homeostasis were found. The method provided a simple and robust strategy for efficient analysis of membrane proteome, offered a reliable platform for research on membrane-related cell dynamic events and expanded the application of metal-organic layers.
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Affiliation(s)
- Qianqian Jiang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - He Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Zichun Qiao
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yutong Hou
- Dalian Medical University Dalian 116044 China
| | - Zhigang Sui
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Baofeng Zhao
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Zhen Liang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Bo Jiang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Yukui Zhang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Lihua Zhang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
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Zhang J, Qiao W, Luo Y. Mitochondrial quality control proteases and their modulation for cancer therapy. Med Res Rev 2023; 43:399-436. [PMID: 36208112 DOI: 10.1002/med.21929] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 09/04/2022] [Accepted: 09/26/2022] [Indexed: 02/05/2023]
Abstract
Mitochondria, the main provider of energy in eukaryotic cells, contains more than 1000 different proteins and is closely related to the development of cells. However, damaged proteins impair mitochondrial function, further contributing to several human diseases. Evidence shows mitochondrial proteases are critically important for protein maintenance. Most importantly, quality control enzymes exert a crucial role in the modulation of mitochondrial functions by degrading misfolded, aged, or superfluous proteins. Interestingly, cancer cells thrive under stress conditions that damage proteins, so targeting mitochondrial quality control proteases serves as a novel regulator for cancer cells. Not only that, mitochondrial quality control proteases have been shown to affect mitochondrial dynamics by regulating the morphology of optic atrophy 1 (OPA1), which is closely related to the occurrence and progression of cancer. In this review, we introduce mitochondrial quality control proteases as promising targets and related modulators in cancer therapy with a focus on caseinolytic protease P (ClpP), Lon protease (LonP1), high-temperature requirement protein A2 (HrtA2), and OMA-1. Further, we summarize our current knowledge of the advances in clinical trials for modulators of mitochondrial quality control proteases. Overall, the content proposed above serves to suggest directions for the development of novel antitumor drugs.
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Affiliation(s)
- Jiangnan Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Wenliang Qiao
- Lung Cancer Center, Laboratory of Lung Cancer, Western China Hospital of Sichuan University, Chengdu, China
| | - Youfu Luo
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
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Kim S, Nam Y, Kim MJ, Kwon SH, Jeon J, Shin SJ, Park S, Chang S, Kim HU, Lee YY, Kim HS, Moon M. Proteomic analysis for the effects of non-saponin fraction with rich polysaccharide from Korean Red Ginseng on Alzheimer's disease in a mouse model. J Ginseng Res 2023; 47:302-310. [PMID: 36926613 PMCID: PMC10014184 DOI: 10.1016/j.jgr.2022.09.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 08/25/2022] [Accepted: 09/27/2022] [Indexed: 11/07/2022] Open
Abstract
Background The most common type of dementia, Alzheimer's disease (AD), is marked by the formation of extracellular amyloid beta (Aβ) plaques. The impairments of axons and synapses appear in the process of Aβ plaques formation, and this damage could cause neurodegeneration. We previously reported that non-saponin fraction with rich polysaccharide (NFP) from Korean Red Ginseng (KRG) showed neuroprotective effects in AD. However, precise molecular mechanism of the therapeutic effects of NFP from KRG in AD still remains elusive. Methods To investigate the therapeutic mechanisms of NFP from KRG on AD, we conducted proteomic analysis for frontal cortex from vehicle-treated wild-type, vehicle-treated 5XFAD mice, and NFP-treated 5XFAD mice by using nano-LC-ESI-MS/MS. Metabolic network analysis was additionally performed as the effects of NFP appeared to be associated with metabolism according to the proteome analysis. Results Starting from 5,470 proteins, 2,636 proteins were selected for hierarchical clustering analysis, and finally 111 proteins were further selected for protein-protein interaction network analysis. A series of these analyses revealed that proteins associated with synapse and mitochondria might be linked to the therapeutic mechanism of NFP. Subsequent metabolic network analysis via genome-scale metabolic models that represent the three mouse groups showed that there were significant changes in metabolic fluxes of mitochondrial carnitine shuttle pathway and mitochondrial beta-oxidation of polyunsaturated fatty acids. Conclusion Our results suggested that the therapeutic effects of NFP on AD were associated with synaptic- and mitochondrial-related pathways, and they provided targets for further rigorous studies on precise understanding of the molecular mechanism of NFP.
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Affiliation(s)
- Sujin Kim
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon, Republic of Korea.,Research Institute for Dementia Science, Konyang University, Daejeon, Republic of Korea
| | - Yunkwon Nam
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon, Republic of Korea
| | - Min-Jeong Kim
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon, Republic of Korea
| | - Seung-Hyun Kwon
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Junhyeok Jeon
- Department of Chemical and Biomolecular Engineering (BK21 four), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Soo Jung Shin
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon, Republic of Korea
| | - Soyoon Park
- Department of Microbiology and Molecular Genetics, College of Biological Sciences, University of California, California, United States
| | - Sungjae Chang
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon, Republic of Korea
| | - Hyun Uk Kim
- Department of Chemical and Biomolecular Engineering (BK21 four), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Yong Yook Lee
- The Korean Ginseng Research Institute, Korea Ginseng Corporation, Daejeon, Republic of Korea
| | - Hak Su Kim
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Minho Moon
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon, Republic of Korea.,Research Institute for Dementia Science, Konyang University, Daejeon, Republic of Korea
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Fan J, Shi S, Qiu Y, Liu M, Shu Q. Analysis of signature genes and association with immune cells infiltration in pediatric septic shock. Front Immunol 2022; 13:1056750. [PMID: 36439140 PMCID: PMC9686439 DOI: 10.3389/fimmu.2022.1056750] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 10/26/2022] [Indexed: 08/02/2023] Open
Abstract
Background Early diagnosis of septic shock in children is critical for prognosis. This study committed to investigate the signature genes and their connection with immune cells in pediatric septic shock. Methods We screened a dataset of children with septic shock from the GEO database and analyzed differentially expressed genes (DEGs). Functional enrichment analysis was performed for these DEGs. Weighted gene co-expression network analysis (WCGNA) was used to screen the key modules. Least absolute shrinkage and selection operator (LASSO) and random forest analysis were finally applied to identify the signature genes. Then gene set enrichment analysis (GSEA) was exerted to explore the signaling pathways related to the hub genes. And the immune cells infiltration was subsequently classified via using CIBERSORT. Results A total of 534 DEGs were screened from GSE26440. The data then was clustered into 17 modules via WGCNA, which MEgrey module was significantly related to pediatric septic shock (cor=-0.62, p<0.0001). LASSO and random forest algorithms were applied to select the signature genes, containing UPP1, S100A9, KIF1B, S100A12, SLC26A8. The receiver operating characteristic curve (ROC) of these signature genes was 0.965, 0.977, 0.984, 0.991 and 0.989, respectively, which were verified in the external dataset from GSE13904. GSEA analysis showed these signature genes involve in positively correlated fructose and mannose metabolism and starch and sucrose metabolism signaling pathway. CIBERSORT suggested these signature genes may participate in immune cells infiltration. Conclusion UPP1, S100A9, KIF1B, S100A12, SLC26A8 emerge remarkable diagnostic performance in pediatric septic shock and involved in immune cells infiltration.
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Affiliation(s)
- Jiajie Fan
- Department of Cardiac Intensive Care Unit, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Shanshan Shi
- Department of Cardiac Intensive Care Unit, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Yunxiang Qiu
- Department of Cardiac Intensive Care Unit, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Mingnan Liu
- Department of Cardiac Intensive Care Unit, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Qiang Shu
- Department of Cardiac Surgery, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
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Zeng C, Xing H, Chen M, Chen L, Li P, Wu X, Li L. Circ_0049472 regulates the damage of Aβ-induced SK-N-SH and CHP-212 cells by mediating the miR-107/KIF1B axis. Exp Brain Res 2022; 240:2299-2309. [PMID: 35881155 DOI: 10.1007/s00221-022-06401-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 06/14/2022] [Indexed: 11/04/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease that seriously affects the life and health of the elderly. Studies have found that circular RNAs (circRNAs) are associated with human diseases, including AD. Hsa_circ_0049472 has been uncovered to be overexpressed in AD, but the role of circ_0049472 remains unclear. AD patients were recruited to collect cerebrospinal fluid (CSF) and serum samples. Amyloid beta (Aβ)-induced SK-N-SH and CHP-212 cells were used as the AD cell models in vitro. Quantitative real-time PCR (qRT-PCR) was used to assess the expression of circ_0049472, microRNA-107 (miR-107) and kinesin family member 1B (KIF1B). Cell counting kit-8 assay tested the cell viability, and flow cytometry measured cell apoptosis. The levels of proliferating cell nuclear antigen (PCNA), BCL2 Associated X (Bax) and kinesin family member 1B (KIF1B) protein were examined by western blot. In addition, the relative inflammatory cytokines (TNF-α, IL-6 and IL-1β) were detected by enzyme-linked immunosorbent assay (ELISA). The malondialdehyde (MDA) level and superoxide dismutase (SOD) activity were measured by relative kits. Dual-luciferase reporter assays and RNA pull-down assay verified the relationship between miR-107 and circ_0049472 or KIF1B. Circ_0049472 and KIF1B were overexpressed in AD patient-derived cerebrospinal fluid (CSF) and serum samples, as well as Aβ-induced SK-N-SH and CHP-212 cells. Silencing circ_0049472 promoted cell proliferation, and inhibited cell apoptosis in Aβ-induced SK-N-SH and CHP-212 cells. MiR-107 was a target of circ_0049472. MiR-107 silencing abolished the cell viability and apoptosis affected by down-regulation of circ_0049472 in Aβ-induced SK-N-SH and CHP-212 cells. Besides, miR-107 targeted KIF1B, and overexpressed KIF1B reverted miR-107 elevation-mediated effects on cell apoptosis, inflammation, and oxidative stress of Aβ-induced SK-N-SH and CHP-212 cells. Circ_0049472 modulated KIF1B by serving as a miR-107 decoy, thereby mediating Aβ-induced neurotoxicity, suggesting that circ_0049472 may be involved in AD pathogenesis.
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Affiliation(s)
- Chaosheng Zeng
- Department of Neurology, The Second Affiliated Hospital of Hainan Medical University, No. 48, Baishuitang Road, Longhua District, Haikou City, 570311, Hainan Province, China
| | - Huaijie Xing
- Department of Neurology, The Second Affiliated Hospital of Hainan Medical University, No. 48, Baishuitang Road, Longhua District, Haikou City, 570311, Hainan Province, China
| | - Min Chen
- Department of Neurology, The Second Affiliated Hospital of Hainan Medical University, No. 48, Baishuitang Road, Longhua District, Haikou City, 570311, Hainan Province, China
| | - Lin Chen
- Department of Neurology, The Second Affiliated Hospital of Hainan Medical University, No. 48, Baishuitang Road, Longhua District, Haikou City, 570311, Hainan Province, China
| | - Pengxiang Li
- Department of Neurology, The Second Affiliated Hospital of Hainan Medical University, No. 48, Baishuitang Road, Longhua District, Haikou City, 570311, Hainan Province, China
| | - Xiaowen Wu
- Department of Neurology, The Second Affiliated Hospital of Hainan Medical University, No. 48, Baishuitang Road, Longhua District, Haikou City, 570311, Hainan Province, China
| | - Li Li
- Department of Neurology, The Second Affiliated Hospital of Hainan Medical University, No. 48, Baishuitang Road, Longhua District, Haikou City, 570311, Hainan Province, China.
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9
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Fan Y, Han Q, Li J, Ye G, Zhang X, Xu T, Li H. Revealing potential diagnostic gene biomarkers of septic shock based on machine learning analysis. BMC Infect Dis 2022; 22:65. [PMID: 35045818 PMCID: PMC8772133 DOI: 10.1186/s12879-022-07056-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 01/07/2022] [Indexed: 12/26/2022] Open
Abstract
Background Sepsis is an inflammatory response caused by infection with pathogenic microorganisms. The body shock caused by it is called septic shock. In view of this, we aimed to identify potential diagnostic gene biomarkers of the disease. Material and methods Firstly, mRNAs expression data sets of septic shock were retrieved and downloaded from the GEO (Gene Expression Omnibus) database for differential expression analysis. Functional enrichment analysis was then used to identify the biological function of DEmRNAs (differentially expressed mRNAs). Machine learning analysis was used to determine the diagnostic gene biomarkers for septic shock. Thirdly, RT-PCR (real-time polymerase chain reaction) verification was performed. Lastly, GSE65682 data set was utilized to further perform diagnostic and prognostic analysis of identified superlative diagnostic gene biomarkers. Results A total of 843 DEmRNAs, including 458 up-regulated and 385 down-regulated DEmRNAs were obtained in septic shock. 15 superlative diagnostic gene biomarkers (such as RAB13, KIF1B, CLEC5A, FCER1A, CACNA2D3, DUSP3, HMGN3, MGST1 and ARHGEF18) for septic shock were identified by machine learning analysis. RF (random forests), SVM (support vector machine) and DT (decision tree) models were used to construct classification models. The accuracy of the DT, SVM and RF models were very high. Interestingly, the RF model had the highest accuracy. It is worth mentioning that ARHGEF18 and FCER1A were related to survival. CACNA2D3 and DUSP3 participated in MAPK signaling pathway to regulate septic shock. Conclusion Identified diagnostic gene biomarkers may be helpful in the diagnosis and therapy of patients with septic shock. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07056-4.
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Clarke LE, Cook A, Mathavarajah S, Bera A, Salsman J, Habib E, Van Iderstine C, Bydoun M, Lewis SM, Dellaire G. Haploinsufficient tumor suppressor PRP4K is negatively regulated during epithelial-to-mesenchymal transition. FASEB J 2021; 35:e22001. [PMID: 34674320 PMCID: PMC9298446 DOI: 10.1096/fj.202001063r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/23/2021] [Accepted: 10/05/2021] [Indexed: 01/28/2023]
Abstract
The pre‐mRNA processing factor 4 kinase (PRP4K, also known as PRPF4B) is an essential gene. However, reduced PRP4K expression is associated with aggressive breast and ovarian cancer phenotypes including taxane therapy resistance, increased cell migration and invasion in vitro, and cancer metastasis in mice. These results are consistent with PRP4K being a haploinsufficient tumor suppressor. Increased cell migration and invasion is associated with epithelial‐to‐mesenchymal transition (EMT), but how reduced PRP4K levels affect normal epithelial cell migration or EMT has not been studied. Depletion of PRP4K by small hairpin RNA (shRNA) in non‐transformed mammary epithelial cell lines (MCF10A, HMLE) reduced or had no effect on 2D migration in the scratch assay but resulted in greater invasive potential in 3D transwell assays. Depletion of PRP4K in mesenchymal triple‐negative breast cancer cells (MDA‐MB‐231) resulted in both enhanced 2D migration and 3D invasion, with 3D invasion correlated with higher fibronectin levels in both MDA‐MB‐231 and MCF10A cells and without changes in E‐cadherin. Induction of EMT in MCF10A cells, by treatment with WNT‐5a and TGF‐β1, or depletion of eukaryotic translation initiation factor 3e (eIF3e) by shRNA, resulted in significantly reduced PRP4K expression. Mechanistically, induction of EMT by WNT‐5a/TGF‐β1 reduced PRP4K transcript levels, whereas eIF3e depletion led to reduced PRP4K translation. Finally, reduced PRP4K levels after eIF3e depletion correlated with increased YAP activity and nuclear localization, both of which are reversed by overexpression of exogenous PRP4K. Thus, PRP4K is a haploinsufficient tumor suppressor negatively regulated by EMT, that when depleted in normal mammary cells can increase cell invasion without inducing full EMT.
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Affiliation(s)
- Livia E Clarke
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Allyson Cook
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | - Amit Bera
- Atlantic Cancer Research Institute, Moncton, New Brunswick, Canada
| | - Jayme Salsman
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Elias Habib
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | - Moamen Bydoun
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Stephen M Lewis
- Atlantic Cancer Research Institute, Moncton, New Brunswick, Canada.,Department of Chemistry & Biochemistry, Université de Moncton, Moncton, New Brunswick, Canada.,Beatrice Hunter Cancer Research Institute, Halifax, Nova Scotia, Canada
| | - Graham Dellaire
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada.,Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada.,Beatrice Hunter Cancer Research Institute, Halifax, Nova Scotia, Canada
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11
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Revisiting Ehrlichia ruminantium Replication Cycle Using Proteomics: The Host and the Bacterium Perspectives. Microorganisms 2021; 9:microorganisms9061144. [PMID: 34073568 PMCID: PMC8229282 DOI: 10.3390/microorganisms9061144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/28/2021] [Accepted: 05/07/2021] [Indexed: 12/16/2022] Open
Abstract
The Rickettsiales Ehrlichia ruminantium, the causal agent of the fatal tick-borne disease Heartwater, induces severe damage to the vascular endothelium in ruminants. Nevertheless, E. ruminantium-induced pathobiology remains largely unknown. Our work paves the way for understanding this phenomenon by using quantitative proteomic analyses (2D-DIGE-MS/MS, 1DE-nanoLC-MS/MS and biotin-nanoUPLC-MS/MS) of host bovine aorta endothelial cells (BAE) during the in vitro bacterium intracellular replication cycle. We detect 265 bacterial proteins (including virulence factors), at all time-points of the E. ruminantium replication cycle, highlighting a dynamic bacterium–host interaction. We show that E. ruminantium infection modulates the expression of 433 host proteins: 98 being over-expressed, 161 under-expressed, 140 detected only in infected BAE cells and 34 exclusively detected in non-infected cells. Cystoscape integrated data analysis shows that these proteins lead to major changes in host cell immune responses, host cell metabolism and vesicle trafficking, with a clear involvement of inflammation-related proteins in this process. Our findings led to the first model of E. ruminantium infection in host cells in vitro, and we highlight potential biomarkers of E. ruminantium infection in endothelial cells (such as ROCK1, TMEM16K, Albumin and PTPN1), which may be important to further combat Heartwater, namely by developing non-antibiotic-based strategies.
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12
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Abstract
Mitochondria are multifunctional organelles that not only produce energy for the cell, but are also important for cell signalling, apoptosis and many biosynthetic pathways. In most cell types, they form highly dynamic networks that are constantly remodelled through fission and fusion events, repositioned by motor-dependent transport and degraded when they become dysfunctional. Motor proteins and their tracks are key regulators of mitochondrial homeostasis, and in this Review, we discuss the diverse functions of the three classes of motor proteins associated with mitochondria - the actin-based myosins, as well as the microtubule-based kinesins and dynein. In addition, Miro and TRAK proteins act as adaptors that link kinesin-1 and dynein, as well as myosin of class XIX (MYO19), to mitochondria and coordinate microtubule- and actin-based motor activities. Here, we highlight the roles of motor proteins and motor-linked track dynamics in the transporting and docking of mitochondria, and emphasize their adaptations in specialized cells. Finally, we discuss how motor-cargo complexes mediate changes in mitochondrial morphology through fission and fusion, and how they modulate the turnover of damaged organelles via quality control pathways, such as mitophagy. Understanding the importance of motor proteins for mitochondrial homeostasis will help to elucidate the molecular basis of a number of human diseases.
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Affiliation(s)
- Antonina J Kruppa
- Cambridge Institute for Medical Research, Department of Clinical Biochemistry, University of Cambridge, Cambridge Biomedical Campus, The Keith Peters Building, Hills Road, Cambridge CB2 0XY, UK
| | - Folma Buss
- Cambridge Institute for Medical Research, Department of Clinical Biochemistry, University of Cambridge, Cambridge Biomedical Campus, The Keith Peters Building, Hills Road, Cambridge CB2 0XY, UK
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13
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Papathomas TG, Suurd DPD, Pacak K, Tischler AS, Vriens MR, Lam AK, de Krijger RR. What Have We Learned from Molecular Biology of Paragangliomas and Pheochromocytomas? Endocr Pathol 2021; 32:134-153. [PMID: 33433885 DOI: 10.1007/s12022-020-09658-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/09/2020] [Indexed: 12/13/2022]
Abstract
Recent advances in molecular genetics and genomics have led to increased understanding of the aetiopathogenesis of pheochromocytomas and paragangliomas (PPGLs). Thus, pan-genomic studies now provide a comprehensive integrated genomic analysis of PPGLs into distinct molecularly defined subtypes concordant with tumour genotypes. In addition, new embryological discoveries have refined the concept of how normal paraganglia develop, potentially establishing a developmental basis for genotype-phenotype correlations for PPGLs. The challenge for modern pathology is to translate these scientific discoveries into routine practice, which will be based largely on histopathology for the foreseeable future. Here, we review recent progress concerning the cell of origin and molecular pathogenesis of PPGLs, including pathogenetic mechanisms, genetic susceptibility and molecular classification. The current roles and tools of pathologists are considered from a histopathological perspective, including differential diagnoses, genotype-phenotype correlations and the use of immunohistochemistry in identifying hereditary predisposition and validating genetic variants of unknown significance. Current and potential molecular prognosticators are also presented with the hope that predictive molecular biomarkers will be integrated into risk stratification scoring systems to assess the metastatic potential of these intriguing neoplasms and identify potential drug targets.
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Affiliation(s)
- Thomas G Papathomas
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
- Gloucestershire Cellular Pathology Laboratory, Cheltenham General Hospital, Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, UK
| | - Diederik P D Suurd
- Department of Surgical Oncology and Endocrine Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Karel Pacak
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Arthur S Tischler
- Department of Pathology and Laboratory Medicine, Tufts Medical Center, Boston Massachusetts, USA
| | - Menno R Vriens
- Department of Surgical Oncology and Endocrine Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Alfred K Lam
- School of Medicine, Griffith University, Gold Coast, QLD, Australia.
- Pathology Queensland, Gold Coast University Hospital, Gold Coast, QLD, Australia.
- Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia.
| | - Ronald R de Krijger
- Princess Maxima Center for Pediatric Oncology, Utrecht, The Netherlands.
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands.
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14
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Audano M, Pedretti S, Ligorio S, Crestani M, Caruso D, De Fabiani E, Mitro N. "The Loss of Golden Touch": Mitochondria-Organelle Interactions, Metabolism, and Cancer. Cells 2020; 9:cells9112519. [PMID: 33233365 PMCID: PMC7700504 DOI: 10.3390/cells9112519] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 02/06/2023] Open
Abstract
Mitochondria represent the energy hub of cells and their function is under the constant influence of their tethering with other subcellular organelles. Mitochondria interact with the endoplasmic reticulum, lysosomes, cytoskeleton, peroxisomes, and nucleus in several ways, ranging from signal transduction, vesicle transport, and membrane contact sites, to regulate energy metabolism, biosynthetic processes, apoptosis, and cell turnover. Tumorigenesis is often associated with mitochondrial dysfunction, which could likely be the result of an altered interaction with different cell organelles or structures. The purpose of the present review is to provide an updated overview of the links between inter-organellar communications and interactions and metabolism in cancer cells, with a focus on mitochondria. The very recent publication of several reviews on these aspects testifies the great interest in the area. Here, we aim at (1) summarizing recent evidence supporting that the metabolic rewiring and adaptation observed in tumors deeply affect organelle dynamics and cellular functions and vice versa; (2) discussing insights on the underlying mechanisms, when available; and (3) critically presenting the gaps in the field that need to be filled, for a comprehensive understanding of tumor cells’ biology. Chemo-resistance and druggable vulnerabilities of cancer cells related to the aspects mentioned above is also outlined.
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Affiliation(s)
| | | | | | | | | | - Emma De Fabiani
- Correspondence: (E.D.F.); (N.M.); Tel.: +39-02-503-18329 (E.D.F.); +39-02-503-18253 (N.M.)
| | - Nico Mitro
- Correspondence: (E.D.F.); (N.M.); Tel.: +39-02-503-18329 (E.D.F.); +39-02-503-18253 (N.M.)
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15
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De Filpo G, Contini E, Serio V, Valeri A, Chetta M, Guasti D, Bani D, Mannelli M, Rapizzi E, Luconi M, Maggi M, Ercolino T, Canu L. Germline Mutation in KIF1Bβ Gene Associated with Loss of Heterozygosity: Usefulness of Next-Generation Sequencing in the Genetic Screening of Patients with Pheochromocytoma. Int J Endocrinol 2020; 2020:3671396. [PMID: 32565791 PMCID: PMC7277055 DOI: 10.1155/2020/3671396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 05/09/2020] [Indexed: 11/30/2022] Open
Abstract
The genetic approach of pheochromocytomas and paragangliomas has changed in the last two decades. Nowadays, we know that more than 40% of patients have a germline mutation in one of the susceptibility genes identified to date. Our aim is to underline how genetic diagnosis by next-generation sequencing (NGS) can improve the management of patients affected by pheochromocytomas and paragangliomas in our routine diagnostic screening. We reported a case presentation and next-generation sequencing analysis supported by in silico studies and evaluation of mitochondrial status in KIF1Bβ tissue. A 46-year-old male affected by a left secreting pheochromocytoma underwent surgery in 2017. After surgery, the normetanephrine levels decreased very slowly and a suspected abdominal lymph node was detected. We found a novel germline KIF1Bβ gene mutation, c.4052C > T, p. Pro1351Leu associated with tumor loss of heterozygosity, and resulted likely-pathogenetic by in silico studies. This mutation was also associated with an increased number of mitochondria through the electron microscopy compared with wild-type tissues as suggestive for mitochondria neoformation compensatory to the mitochondrial autophagic figures observed. Our results underline the usefulness of next-generation sequencing in the presence of multiple tumor predisposition genes and how, at the same time, its use may result challenging for the clinicians. To date, performing the genetic analysis according to the latest Consensus Statement is mandatory in patients affected by PHEO/PGL.
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Affiliation(s)
- Giuseppina De Filpo
- Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
- Endocrinology Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Elisa Contini
- Center of Research and Innovation of Myeloproliferative Neoplasms, AOU Careggi, University of Florence, Florence, Italy
| | - Viola Serio
- Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Andrea Valeri
- General and Surgical Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | | | - Daniele Guasti
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Daniele Bani
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Massimo Mannelli
- Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
- Endocrinology Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Elena Rapizzi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Michaela Luconi
- Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
- Endocrinology Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Mario Maggi
- Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
- Endocrinology Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Tonino Ercolino
- Endocrinology Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Letizia Canu
- Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
- Endocrinology Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
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16
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Cortés-Gutiérrez EI, García-Vielma C, Dávila-Rodríguez MI, Sánchez-Dávila H, Fernández JL, Gosálvez J. 1p36 is a chromosomal site of genomic instability in cervical intraepithelial neoplasia. Biotech Histochem 2019; 95:137-144. [DOI: 10.1080/10520295.2019.1652344] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
| | - C. García-Vielma
- Department of Genetics, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social (IMSS), Monterrey, México
| | - M. I. Dávila-Rodríguez
- Department of Genetics, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social (IMSS), Monterrey, México
| | - H. Sánchez-Dávila
- High Specialty Medical Unit No. 23. Hospital of Obstetrics and Gynecology, Dr. Ignacio Morones Prieto of Instituto Mexicano del Seguro Social
| | - J. L. Fernández
- Genetics Unit, Complejo Hospitalario Universitario A Coruña-INIBIC, La Coruña, Spain
| | - J. Gosálvez
- Department of Biology, Genetic Unit, Universidad Autónoma de Madrid (UAM), Madrid, Spain
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17
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Ando K, Yokochi T, Mukai A, Wei G, Li Y, Kramer S, Ozaki T, Maehara Y, Nakagawara A. Tumor suppressor KIF1Bβ regulates mitochondrial apoptosis in collaboration with YME1L1. Mol Carcinog 2019; 58:1134-1144. [PMID: 30859632 PMCID: PMC6593999 DOI: 10.1002/mc.22997] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 02/06/2019] [Accepted: 02/18/2019] [Indexed: 01/29/2023]
Abstract
KIF1Bβ, a member of the kinesin superfamily of motor proteins, is a haploinsufficient tumor suppressor mapped to chromosome 1p36.2, which is frequently deleted in neural crest–derived tumors, including neuroblastoma and pheochromocytoma. While KIF1Bβ acts downstream of the nerve growth factor (NGF) pathway to induce apoptosis, further molecular functions of this gene product have largely been unexplored. In this study, we report that KIF1Bβ destabilizes the morphological structure of mitochondria, which is critical for cell survival and apoptosis. We identified YME1L1, a mitochondrial metalloprotease responsible for the cleavage of the mitochondrial GTPase OPA1, as a physical interacting partner of KIF1Bβ. KIF1Bβ interacted with YME1L1 through its death‐inducing region, as initiated the protease activity of YME1L1 to cleave the long forms of OPA1, resulting in mitochondrial fragmentation. Overexpression of YME1L1 promoted apoptosis, while knockdown of YME1L1 promoted cell growth. High YME1L1 expression was significantly associated with a better prognosis in neuroblastoma. Furthermore, in NGF‐deprived PC12 cells, KIF1Bβ and YME1L1 were upregulated, accompanied by mitochondrial fragmentation and apoptotic cell death. Small interfering RNA–mediated knockdown of either protein alone, however, remarkably inhibited the NGF depletion–induced apoptosis. Our findings indicate that tumor suppressor KIF1Bβ plays an important role in intrinsic mitochondria–mediated apoptosis through the regulation of structural and functional dynamics of mitochondria in collaboration with YME1L1. Dysfunction of the KIF1Bβ/YME1L1/OPA1 mechanism may be involved in malignant biological features of neural crest–derived tumors as well as the initiation and progression of neurodegenerative diseases.
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Affiliation(s)
- Koji Ando
- Division of Biochemistry and Innovative Cancer Therapeutics, Chiba Cancer Center Research Institute, Chiba, Japan.,Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomoki Yokochi
- Division of Biochemistry and Innovative Cancer Therapeutics, Chiba Cancer Center Research Institute, Chiba, Japan
| | - Akira Mukai
- Division of Biochemistry and Innovative Cancer Therapeutics, Chiba Cancer Center Research Institute, Chiba, Japan
| | - Gao Wei
- Division of Biochemistry and Innovative Cancer Therapeutics, Chiba Cancer Center Research Institute, Chiba, Japan
| | - Yuanyuan Li
- Division of Biochemistry and Innovative Cancer Therapeutics, Chiba Cancer Center Research Institute, Chiba, Japan.,Division of Molecular Medicine, Life Science Research Institute, Saga Medical Center Koseikan, Saga, Japan
| | - Sonja Kramer
- Division of Biochemistry and Innovative Cancer Therapeutics, Chiba Cancer Center Research Institute, Chiba, Japan
| | - Toshinori Ozaki
- Division of Anti-Tumor Research, Chiba Cancer Center Research Institute, Chiba, Japan
| | - Yoshihiko Maehara
- Director of Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Akira Nakagawara
- Division of Biochemistry and Innovative Cancer Therapeutics, Chiba Cancer Center Research Institute, Chiba, Japan.,Division of Molecular Medicine, Life Science Research Institute, Saga Medical Center Koseikan, Saga, Japan.,SAGA HIMAT Foundation, Saga, Japan
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