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Luo JS, Zhai WH, Ding LL, Zhang XJ, Han J, Ning JQ, Chen XM, Jiang WC, Yan RY, Chen MJ. MAMs and Mitochondrial Quality Control: Overview and Their Role in Alzheimer's Disease. Neurochem Res 2024:10.1007/s11064-024-04205-w. [PMID: 39002091 DOI: 10.1007/s11064-024-04205-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/20/2024] [Accepted: 07/02/2024] [Indexed: 07/15/2024]
Abstract
Alzheimer's disease (AD) represents the most widespread neurodegenerative disorder, distinguished by a gradual onset and slow progression, presenting a substantial challenge to global public health. The mitochondrial-associated membrane (MAMs) functions as a crucial center for signal transduction and material transport between mitochondria and the endoplasmic reticulum, playing a pivotal role in various pathological mechanisms of AD. The dysregulation of mitochondrial quality control systems is considered a fundamental factor in the development of AD, leading to mitochondrial dysfunction and subsequent neurodegenerative events. Recent studies have emphasized the role of MAMs in regulating mitochondrial quality control. This review will delve into the molecular mechanisms underlying the imbalance in mitochondrial quality control in AD and provide a comprehensive overview of the role of MAMs in regulating mitochondrial quality control.
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Affiliation(s)
- Jian-Sheng Luo
- Department of Anesthesiology, Deyang People's Hospital, Deyang, 618000, China
| | - Wen-Hu Zhai
- Department of Anesthesiology, Deyang People's Hospital, Deyang, 618000, China
| | - Ling-Ling Ding
- Department of Anesthesiology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China.
| | - Xian-Jie Zhang
- Department of Anesthesiology, Deyang People's Hospital, Deyang, 618000, China
| | - Jia Han
- Department of Anesthesiology, Deyang People's Hospital, Deyang, 618000, China
| | - Jia-Qi Ning
- Department of Anesthesiology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Xue-Meng Chen
- Department of Anesthesiology, Deyang People's Hospital, Deyang, 618000, China
| | - Wen-Cai Jiang
- Department of Anesthesiology, Deyang People's Hospital, Deyang, 618000, China
| | - Ru-Yu Yan
- Department of Anesthesiology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Meng-Jie Chen
- Department of Anesthesiology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
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Li R, Yao S, Wei F, Chen M, Zhong Y, Zou C, Chen L, Wei L, Yang C, Zhang X, Liu Y. Downregulation of miR-181c-5p in Alzheimer's disease weakens the response of microglia to Aβ phagocytosis. Sci Rep 2024; 14:11487. [PMID: 38769091 PMCID: PMC11106282 DOI: 10.1038/s41598-024-62347-x] [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: 02/27/2024] [Accepted: 05/15/2024] [Indexed: 05/22/2024] Open
Abstract
Alzheimer's disease (AD) is an age-associated neurodegenerative disease. Recently, studies have demonstrated the potential involvement of microRNA-181c-5p (miR-181c-5p) in AD. However, the mechanism through which miR-181c-5p is responsible for the onset and progression of this disease remains unclear, and our study aimed to explore this problem. Differential expression analysis of the AD dataset was performed to identify dysregulated genes. Based on hypergeometric analysis, AD differential the upstream regulation genes miR-181c-5p was found. We constructed a model where SH-SY5Y and BV2 cells were exposed to Aβ1-42 to simulate AD. Levels of tumor necrosis factor-alpha, interleukin-6, and IL-1β were determined using enzyme-linked immunosorbent assay or reverse transcription quantitative polymerase chain reaction. Phosphorylation levels of p-P38 and P38 were detected by Western blot. The level of apoptosis in BV2 cells under Aβ1-42 stress was exacerbated by miR-181c-5p mimic. Downregulated miR-181c-5p impaired the phagocytosis and degradation of Aβ by BV2 cells. The release of proinflammatory cytokines in BV2 cells with Aβ1-42 stress was alleviated by miR-181c-5p upregulation. Additionally, miR-181c-5p downregulation alleviated the phosphorylation of P38 in Aβ1-42-induced SH-SY5Y cells. In conclusion, miR-181c-5p improves the phagocytosis of Aβ by microglial cells in AD patients, thereby reducing neuroinflammation.
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Affiliation(s)
- Rongjie Li
- Department of Geriatrics, The Fifth Affiliated Hospital of Guangxi Medical University, No.89 Qixing Road, Nanning, 530021, China
- Department of Geriatrics, The First People's Hospital of Nanning, Nanning, China
| | - Shanshan Yao
- Department of Geriatrics, The Fifth Affiliated Hospital of Guangxi Medical University, No.89 Qixing Road, Nanning, 530021, China
- Department of Geriatrics, The First People's Hospital of Nanning, Nanning, China
| | - Feijie Wei
- Department of Geriatrics, The Fifth Affiliated Hospital of Guangxi Medical University, No.89 Qixing Road, Nanning, 530021, China
- Department of Geriatrics, The First People's Hospital of Nanning, Nanning, China
| | - Meixiang Chen
- Department of Geriatrics, The Fifth Affiliated Hospital of Guangxi Medical University, No.89 Qixing Road, Nanning, 530021, China
- Department of Geriatrics, The First People's Hospital of Nanning, Nanning, China
| | - Yuanli Zhong
- Department of Neurology, The First People's Hospital of Nanning, Nanning, China
| | - Chun Zou
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Liechun Chen
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Lichun Wei
- Department of Geriatrics, The Fifth Affiliated Hospital of Guangxi Medical University, No.89 Qixing Road, Nanning, 530021, China
- Department of Geriatrics, The First People's Hospital of Nanning, Nanning, China
| | - Chunxia Yang
- Department of Geriatrics, The Fifth Affiliated Hospital of Guangxi Medical University, No.89 Qixing Road, Nanning, 530021, China
- Department of Geriatrics, The First People's Hospital of Nanning, Nanning, China
| | - Xiyuan Zhang
- Department of Geriatrics, The Fifth Affiliated Hospital of Guangxi Medical University, No.89 Qixing Road, Nanning, 530021, China.
- Department of Geriatrics, The First People's Hospital of Nanning, Nanning, China.
| | - Ying Liu
- Department of Geriatrics, The Fifth Affiliated Hospital of Guangxi Medical University, No.89 Qixing Road, Nanning, 530021, China.
- Department of Geriatrics, The First People's Hospital of Nanning, Nanning, China.
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Wang X, Hu M, Chen J, Lou X, Zhang H, Li M, Cheng J, Ma T, Xiong J, Gao R, Chen X, Wang J. Key roles of autophagosome/endosome maturation mediated by Syntaxin17 in methamphetamine-induced neuronal damage in mice. Mol Med 2024; 30:4. [PMID: 38172666 PMCID: PMC10765725 DOI: 10.1186/s10020-023-00765-9] [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: 06/20/2023] [Accepted: 12/01/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Autophagic defects are involved in Methamphetamine (Meth)-induced neurotoxicity. Syntaxin 17 (Stx17), a member of the SNARE protein family, participating in several stages of autophagy, including autophagosome-late endosome/lysosome fusion. However, the role of Stx17 and potential mechanisms in autophagic defects induced by Meth remain poorly understood. METHODS To address the mechanism of Meth-induced cognitive impairment, the adenovirus (AV) and adeno-associated virus (AAV) were injected into the hippocampus for stereotaxis to overexpress Stx17 in vivo to examine the cognitive ability via morris water maze and novel object recognition. In molecular level, the synaptic injury and autophagic defects were evaluated. To address the Meth induced neuronal damage, the epidermal growth factor receptor (EGFR) degradation assay was performed to evaluate the degradability of the "cargos" mediated by Meth, and mechanistically, the maturation of the vesicles, including autophagosomes and endosomes, were validated by the Co-IP and the GTP-agarose affinity isolation assays. RESULTS Overexpression of Stx17 in the hippocampus markedly rescued the Meth-induced cognitive impairment and synaptic loss. For endosomes, Meth exposure upregulated Rab5 expression and its guanine-nucleotide exchange factor (GEF) (immature endosome), with a commensurate decreased active form of Rab7 (Rab7-GTP) and impeded the binding of Rab7 to CCZ1 (mature endosome); for autophagosomes, Meth treatment elicited a dramatic reduction in the overlap between Stx17 and autophagosomes but increased the colocalization of ATG5 and autophagosomes (immature autophagosomes). After Stx17 overexpression, the Rab7-GTP levels in purified late endosomes were substantially increased in parallel with the elevated mature autophagosomes, facilitating cargo (Aβ42, p-tau, and EGFR) degradation in the vesicles, which finally ameliorated Meth-induced synaptic loss and memory deficits in mice. CONCLUSION Stx17 decrease mediated by Meth contributes to vesicle fusion defects which may ascribe to the immature autophagosomes and endosomes, leading to autophagic dysfunction and finalizes neuronal damage and cognitive impairments. Therefore, targeting Stx17 may be a novel therapeutic strategy for Meth-induced neuronal injury.
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Affiliation(s)
- Xi Wang
- Key Lab of Modern Toxicology (NJMU), Department of Toxicology, School of Public Health, Ministry of Education, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China
| | - Miaoyang Hu
- Key Lab of Modern Toxicology (NJMU), Department of Toxicology, School of Public Health, Ministry of Education, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China
| | - Jingrong Chen
- Key Lab of Modern Toxicology (NJMU), Department of Toxicology, School of Public Health, Ministry of Education, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China
| | - Xinyu Lou
- Key Lab of Modern Toxicology (NJMU), Department of Toxicology, School of Public Health, Ministry of Education, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China
| | - Hongchao Zhang
- Key Lab of Modern Toxicology (NJMU), Department of Toxicology, School of Public Health, Ministry of Education, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China
| | - Muhan Li
- Key Lab of Modern Toxicology (NJMU), Department of Toxicology, School of Public Health, Ministry of Education, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China
| | - Jie Cheng
- Key Lab of Modern Toxicology (NJMU), Department of Toxicology, School of Public Health, Ministry of Education, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China
| | - Tengfei Ma
- School of Pharmacy, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China
| | - Jianping Xiong
- Key Lab of Modern Toxicology (NJMU), Department of Toxicology, School of Public Health, Ministry of Education, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China
| | - Rong Gao
- Department of Hygienic Analysis and Detection, Key Laboratory of Modern Toxicology, School of Public Health, Ministry of Education, Nanjing Medical University, Nanjing, China.
| | - Xufeng Chen
- Department of Emergency Medicine, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, 210029, China.
| | - Jun Wang
- Key Lab of Modern Toxicology (NJMU), Department of Toxicology, School of Public Health, Ministry of Education, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China.
- China International Cooperation Center for Environment and Human Health, Nanjing Medical University, 101 Longmian Street, Nanjing, Jiangsu, 211166, China.
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Kim S, Hyun DG, Nam Y, Shin SJ, Im D, Kim HS, Leem SH, Park HH, Kim BH, Park YH, Cho E, Goddard WA, Kim DH, Kim HI, Moon M. Genipin and pyrogallol: Two natural small molecules targeting the modulation of disordered proteins in Alzheimer's disease. Biomed Pharmacother 2023; 168:115770. [PMID: 37865990 DOI: 10.1016/j.biopha.2023.115770] [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: 07/17/2023] [Revised: 10/03/2023] [Accepted: 10/18/2023] [Indexed: 10/24/2023] Open
Abstract
Alzheimer's disease (AD) is characterized by the aggregation of disordered proteins, such as amyloid beta (Aβ) and tau, leading to neurotoxicity and disease progression. Despite numerous efforts, effective inhibitors of Aβ and tau aggregates have not been developed. Thus, we aimed to screen natural small molecules from crude extracts that target various pathologies and are prescribed for patients with neurological diseases. In this study, we screened 162 natural small molecules prescribed for neurological diseases and identified genipin and pyrogallol as hit compounds capable of simultaneously regulating the aggregation of Aβ and tau K18. Moreover, we confirmed the dual modulatory effects of these compounds on the reduction of amyloid-mediated neurotoxicity in vitro and the disassembly of preformed Aβ42 and tau K18 fibrils. Furthermore, we observed the alleviatory effects of genipin and pyrogallol against AD-related pathologies in triple transgenic AD mice. Molecular dynamics and docking simulations revealed the molecular interaction dynamics of genipin and pyrogallol with Aβ42 and tau K18, providing insights into their suppression of aggregation. Our findings suggest the therapeutic potential of genipin and pyrogallol as dual modulators for the treatment of AD by inhibiting aggregation or promoting dissociation of Aβ and tau.
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Affiliation(s)
- Sujin Kim
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, the Republic of Korea; Research Institute for Dementia Science, Konyang University, Daejeon 35365, the Republic of Korea
| | - Da Gyeong Hyun
- Department of Chemistry, Korea University, Seoul 02841, the Republic of Korea; Center for Proteogenome Research, Korea University, Seoul 02841, the Republic of Korea; Single Cell Analysis Laboratory, Korea University, Seoul 02841, the Republic of Korea; Division of Chemistry and Chemical Engineering and Materials Process and Simulation Center, California Institute of Technology, Pasadena, CA 91125, United States
| | - Yunkwon Nam
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, the Republic of Korea
| | - Soo Jung Shin
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, the Republic of Korea
| | - Dongjoon Im
- Department of Chemistry, Korea University, Seoul 02841, the Republic of Korea; Center for Proteogenome Research, Korea University, Seoul 02841, the Republic of Korea; Single Cell Analysis Laboratory, Korea University, Seoul 02841, the Republic of Korea; Division of Chemistry and Chemical Engineering and Materials Process and Simulation Center, California Institute of Technology, Pasadena, CA 91125, United States
| | - Hyeon Soo Kim
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, the Republic of Korea
| | - Seol Hwa Leem
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, the Republic of Korea
| | - Hyun Ha Park
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, the Republic of Korea
| | - Byeong-Hyeon Kim
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, the Republic of Korea
| | - Yong Ho Park
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, the Republic of Korea
| | - Eunbi Cho
- Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, the Republic of Korea
| | - William A Goddard
- Division of Chemistry and Chemical Engineering and Materials Process and Simulation Center, California Institute of Technology, Pasadena, CA 91125, United States
| | - Dong Hyun Kim
- Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, the Republic of Korea.
| | - Hugh I Kim
- Department of Chemistry, Korea University, Seoul 02841, the Republic of Korea; Center for Proteogenome Research, Korea University, Seoul 02841, the Republic of Korea; Single Cell Analysis Laboratory, Korea University, Seoul 02841, the Republic of Korea; Division of Chemistry and Chemical Engineering and Materials Process and Simulation Center, California Institute of Technology, Pasadena, CA 91125, United States.
| | - Minho Moon
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, the Republic of Korea; Research Institute for Dementia Science, Konyang University, Daejeon 35365, the Republic of Korea.
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Pilski A, Graves SM. Repeated Methamphetamine Administration Results in Axon Loss Prior to Somatic Loss of Substantia Nigra Pars Compacta and Locus Coeruleus Neurons in Male but Not Female Mice. Int J Mol Sci 2023; 24:13039. [PMID: 37685846 PMCID: PMC10487759 DOI: 10.3390/ijms241713039] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/17/2023] [Accepted: 08/19/2023] [Indexed: 09/10/2023] Open
Abstract
Methamphetamine (meth) is a neurotoxic psychostimulant that increases monoamine oxidase (MAO)-dependent mitochondrial oxidant stress in axonal but not somatic compartments of substantia nigra pars compacta (SNc) and locus coeruleus (LC) neurons. Chronic meth administration results in the degeneration of SNc and LC neurons in male mice, and MAO inhibition is neuroprotective, suggesting that the deleterious effects of chronic meth begin in axons before advancing to the soma of SNc and LC neurons. To test this hypothesis, mice were administered meth (5 mg/kg) for 14, 21, or 28 days, and SNc and LC axonal lengths and numbers of neurons were quantified. In male mice, the SNc and LC axon lengths decreased with 14, 21, and 28 days of meth, whereas somatic loss was only observed after 28 days of meth; MAO inhibition (phenelzine; 20 mg/kg) prevented axonal and somatic loss of SNc and LC neurons. In contrast, chronic (28-day) meth had no effect on the axon length or numbers of SNc or LC neurons in female mice. The results demonstrate that repeated exposure to meth produces SNc and LC axonal deficits prior to somatic loss in male subjects, consistent with a dying-back pattern of degeneration, whereas female mice are resistant to chronic meth-induced degeneration.
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Affiliation(s)
| | - Steven M. Graves
- Department of Pharmacology, University of Minnesota, Minneapolis, MN 55455, USA;
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Yao S, Zhu Q, Zhang Q, Cai Y, Liu S, Pang L, Jing Y, Yin X, Cheng H. Managing Cancer and Living Meaningfully (CALM) alleviates chemotherapy related cognitive impairment (CRCI) in breast cancer survivors: A pilot study based on resting-state fMRI. Cancer Med 2023; 12:16231-16242. [PMID: 37409628 PMCID: PMC10469649 DOI: 10.1002/cam4.6285] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 07/07/2023] Open
Abstract
BACKGROUND Chemotherapy related cognitive impairment (CRCI) is a type of memory and cognitive impairment induced by chemotherapy and has become a growing clinical problem. Breast cancer survivors (BCs) refer to patients from the moment of breast cancer diagnosis to the end of their lives. Managing Cancer and Living Meaningfully (CALM) is a convenient and easy-to-apply psychological intervention that has been proven to improve quality of life and alleviate CRCI in BCs. However, the underlying neurobiological mechanisms remain unclear. Resting-state functional magnetic resonance imaging (rs-fMRI) has become an effective method for understanding the neurobiological mechanisms of brain networks in CRCI. The fractional amplitude of low-frequency fluctuations (fALFF) and ALFF have often been used in analyzing the power and intensity of spontaneous regional resting state neural activity. METHODS The recruited BCs were randomly divided into the CALM group and the care as usual (CAU) group. All BCs were evaluated by the Functional Assessment of Cancer Therapy Cognitive Function (FACT-Cog) before and after CALM or CAU. The rs-fMRI imaging was acquired before and after CALM intervention in CALM group BCs. The BCs were defined as before CALM intervention (BCI) group and after CALM intervention (ACI) group. RESULTS There were 32 BCs in CALM group and 35 BCs in CAU group completed the overall study. There were significant differences between the BCI group and the ACI group in the FACT-Cog-PCI scores. Compared with the BCI group, the ACI group showed lower fALFF signal in the left medial frontal gyrus and right sub-gyral and higher fALFF in the left occipital_sup and middle occipital gyrus. There was a significant positive correlation between hippocampal ALFF value and FACT-Cog-PCI scores. CONCLUSIONS CALM intervention may have an effective function in alleviating CRCI of BCs. The altered local synchronization and regional brain activity may be correlated with the improved cognitive function of BCs who received the CALM intervention. The ALFF value of hippocampus seems to be an important factor in reflect cognitive function in BCs with CRCI and the neural network mechanism of CALM intervention deserves further exploration to promote its application.
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Affiliation(s)
- Senbang Yao
- Department of OncologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
- Cancer and Cognition LaboratoryAnhui Medical UniversityHefeiChina
| | - Qinqin Zhu
- Department of RadiologyQuzhou People's HospitalQuzhouChina
| | - Qianqian Zhang
- Department of OncologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
- Cancer and Cognition LaboratoryAnhui Medical UniversityHefeiChina
| | - Yinlian Cai
- Department of OncologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
- Cancer and Cognition LaboratoryAnhui Medical UniversityHefeiChina
| | - Shaochun Liu
- Department of OncologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
- Cancer and Cognition LaboratoryAnhui Medical UniversityHefeiChina
| | - Lulian Pang
- Department of OncologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
- Cancer and Cognition LaboratoryAnhui Medical UniversityHefeiChina
| | - Yanyan Jing
- Department of OncologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
- Cancer and Cognition LaboratoryAnhui Medical UniversityHefeiChina
| | - Xiangxiang Yin
- Department of OncologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
- Cancer and Cognition LaboratoryAnhui Medical UniversityHefeiChina
| | - Huaidong Cheng
- Department of OncologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
- Shenzhen Clinical Medical School of Southern Medical UniversityShenzhenChina
- Department of OncologyShenzhen Hospital of Southern Medical UniversityShenzhenChina
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