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Zhao B, Zhang H, Liu Y, Zu G, Zhang Y, Hu J, Liu S, You L. Forebrain excitatory neuron-specific loss of Brpf1 attenuates excitatory synaptic transmission and impairs spatial and fear memory. Neural Regen Res 2024; 19:1133-1141. [PMID: 37862219 PMCID: PMC10749587 DOI: 10.4103/1673-5374.385307] [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: 02/06/2023] [Revised: 06/10/2023] [Accepted: 07/19/2023] [Indexed: 10/22/2023] Open
Abstract
Bromodomain and plant homeodomain (PHD) finger containing protein 1 (Brpf1) is an activator and scaffold protein of a multiunit complex that includes other components involving lysine acetyltransferase (KAT) 6A/6B/7. Brpf1, KAT6A, and KAT6B mutations were identified as the causal genes of neurodevelopmental disorders leading to intellectual disability. Our previous work revealed strong and specific expression of Brpf1 in both the postnatal and adult forebrain, especially the hippocampus, which has essential roles in learning and memory. Here, we hypothesized that Brpf1 plays critical roles in the function of forebrain excitatory neurons, and that its deficiency leads to learning and memory deficits. To test this, we knocked out Brpf1 in forebrain excitatory neurons using CaMKIIa-Cre. We found that Brpf1 deficiency reduced the frequency of miniature excitatory postsynaptic currents and downregulated the expression of genes Pcdhgb1, Slc16a7, Robo3, and Rho, which are related to neural development, synapse function, and memory, thereby damaging spatial and fear memory in mice. These findings help explain the mechanisms of intellectual impairment in patients with BRPF1 mutation.
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Affiliation(s)
- Baicheng Zhao
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Hang Zhang
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Ying Liu
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Gaoyu Zu
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Yuxiao Zhang
- Shanghai Key Laboratory of Brain Functional Genomics (Ministry of Education), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai, China
- Shanghai Changning Mental Health Center, Shanghai, China
- NYU-ECNU Institute of Brain and Cognitive Science at NYU Shanghai, Shanghai, China
| | - Jiayi Hu
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Shuai Liu
- Shanghai Key Laboratory of Brain Functional Genomics (Ministry of Education), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai, China
- Shanghai Changning Mental Health Center, Shanghai, China
- NYU-ECNU Institute of Brain and Cognitive Science at NYU Shanghai, Shanghai, China
| | - Linya You
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai, China
- Key Laboratory of Medical Imaging Computing and Computer Assisted Intervention of Shanghai, Shanghai, China
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Cevatemre B, Bulut I, Dedeoglu B, Isiklar A, Syed H, Bayram OY, Bagci-Onder T, Acilan C. Exploiting epigenetic targets to overcome taxane resistance in prostate cancer. Cell Death Dis 2024; 15:132. [PMID: 38346967 PMCID: PMC10861560 DOI: 10.1038/s41419-024-06422-1] [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: 09/13/2023] [Revised: 12/15/2023] [Accepted: 01/02/2024] [Indexed: 02/15/2024]
Abstract
The development of taxane resistance remains a major challenge for castration resistant prostate cancer (CR-PCa), despite the effectiveness of taxanes in prolonging patient survival. To uncover novel targets, we performed an epigenetic drug screen on taxane (docetaxel and cabazitaxel) resistant CR-PCa cells. We identified BRPF reader proteins, along with several epigenetic groups (CBP/p300, Menin-MLL, PRMT5 and SIRT1) that act as targets effectively reversing the resistance mediated by ABCB1. Targeting BRPFs specifically resulted in the resensitization of resistant cells, while no such effect was observed on the sensitive compartment. These cells were successfully arrested at the G2/M phase of cell cycle and underwent apoptosis upon BRPF inhibition, confirming the restoration of taxane susceptibility. Pharmacological inhibition of BRPFs reduced ABCB1 activity, indicating that BRPFs may be involved in an efflux-related mechanism. Indeed, ChIP-qPCR analysis confirmed binding of BRPF1 to the ABCB1 promoter suggesting direct regulation of the ABCB1 gene at the transcriptional level. RNA-seq analysis revealed that BRPF1 knockdown affects the genes enriched in mTORC1 and UPR signaling pathways, revealing potential mechanisms underlying its functional impact, which is further supported by the enhancement of taxane response through the combined inhibition of ABCB1 and mTOR pathways, providing evidence for the involvement of multiple BRPF1-regulated pathways. Beyond clinical attributes (Gleason score, tumor stage, therapy outcome, recurrence), metastatic PCa databases further supported the significance of BRPF1 in taxane resistance, as evidenced by its upregulation in taxane-exposed PCa patients.
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Affiliation(s)
- Buse Cevatemre
- Koc University Research Center for Translational Medicine, Istanbul, Turkey
| | - Ipek Bulut
- Koc University Graduate School of Health Sciences, Istanbul, Turkey
| | - Beyza Dedeoglu
- Koc University Graduate School of Science and Engineering, Istanbul, Turkey
| | - Arda Isiklar
- Koc University Graduate School of Health Sciences, Istanbul, Turkey
| | - Hamzah Syed
- Koc University Research Center for Translational Medicine, Istanbul, Turkey
- Koc University School of Medicine, Sariyer, Turkey
| | | | - Tugba Bagci-Onder
- Koc University Research Center for Translational Medicine, Istanbul, Turkey
- Koc University School of Medicine, Sariyer, Turkey
| | - Ceyda Acilan
- Koc University Research Center for Translational Medicine, Istanbul, Turkey.
- Koc University School of Medicine, Sariyer, Turkey.
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Huang X, Zhao J, Wang Q, Yan T, Gou S, Zhu X, Yang L, Ye F, Zhang J, Wang Y, Yang S, Le W, Xiang Y. Association between plasma CTRPs with cognitive impairment and neurodegeneration of Alzheimer's disease. CNS Neurosci Ther 2024; 30:e14606. [PMID: 38334009 PMCID: PMC10853890 DOI: 10.1111/cns.14606] [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: 08/07/2023] [Revised: 12/21/2023] [Accepted: 01/06/2024] [Indexed: 02/10/2024] Open
Abstract
AIMS Recent evidence indicated the biological basis of complement 1q (C1q)/tumor necrosis factor (TNF)-related protein (CTRP) 3, 4, and 14 for affecting brain structure and cognitive function. Thus, we aimed to investigate the association between plasma CTRPs with Alzheimer's disease (AD). METHODS A multicenter, cross-sectional study recruited patients with AD (n = 137) and cognitively normal (CN) controls (n = 140). After the data collection of demographic characteristics, lifestyle risk factors, and medical history, plasma levels of tau phosphorylated at threonine 217 (pT217), pT181, neurofilament light (NfL), CTRP3, 4, and 14 were examined and compared. Multivariate logistic regression analysis was applied to determine associations of plasma CTPRs with the presence of AD. The correlation analysis was used to explore correlations between plasma CTPRs with scores of Mini-Mental State Examination (MMSE), Montreal Cognitive Assessment (MoCA), Activities of Daily Living (ADL) scale, and Clinical Dementia Rating Sum of Boxes (CDR-SB), and levels of plasma pT217, pT181, and NfL. Receiver-operating characteristic (ROC) analysis and Delong's test were used to determine the diagnostic power of plasma CTPRs. RESULTS Plasma levels of CTRP3, 4, and 14 were higher in AD group than those in CN group. After adjusting for conventional risk factors, CTRP3, CTRP4, and CTRP14 were associated with the presence of AD. In AD patients, CTRP3 was negatively correlated with scores of MMSE and MoCA, while positively correlated with ADL score, CDR-SB score, pT217, and pT181; CTRP4 was positively correlated with CDR-SB score, pT181, and NfL; CTRP14 was negatively correlated with MMSE score, while positively correlated with CDR-SB score, pT217, and NfL. An independent addition of CTRP3 and 4 to the basic model combining age, sex, years of education, APOE4 status, BMI, TG, and HDL-C led to a significant improvement in diagnostic power for AD, respectively. CONCLUSIONS All the findings preliminarily uncovered associations between plasma CTRPs and AD and suggested the potential of CTRPs as a blood-derived biomarker for AD.
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Affiliation(s)
- Xiao Huang
- Institute of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
| | - Jialing Zhao
- Institute of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
- Department of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
- Department of NeurologyYunyang County People's HospitalChongqingChina
| | - Qinghua Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping HospitalThird Military Medical UniversityChongqingChina
- Chongqing Key Laboratory of Ageing and Brain DiseasesChongqingChina
| | - Tingqi Yan
- Department of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
| | - Shu Gou
- Department of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
| | - Xiaofeng Zhu
- Department of NeurologyChengdu Eighth People's HospitalChengduChina
| | - Liu Yang
- Department of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
| | - Fang Ye
- Department of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
| | - Jie Zhang
- Institute of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
- Department of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
| | - Yanjiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping HospitalThird Military Medical UniversityChongqingChina
- Chongqing Key Laboratory of Ageing and Brain DiseasesChongqingChina
| | - Shaojie Yang
- Department of NeurologyChengdu Eighth People's HospitalChengduChina
| | - Weidong Le
- Institute of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
| | - Yang Xiang
- Institute of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
- Department of Neurology, Sichuan Provincial People's Hospital, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina
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Peña Palomino PA, Black KC, Ressl S. Pleiotropy of C1QL proteins across physiological systems and their emerging role in synapse homeostasis. Biochem Soc Trans 2023:233015. [PMID: 37140354 DOI: 10.1042/bst20220439] [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: 12/03/2022] [Revised: 04/10/2023] [Accepted: 04/18/2023] [Indexed: 05/05/2023]
Abstract
The C1q/TNF superfamily of proteins engages in a pleiotropy of physiological functions associated with various diseases. C1QL proteins demonstrate important protective and regulatory roles in the endocrine, immune, cardiovascular, and nervous systems in both human and rodent studies. Studies in the central nervous system (CNS), adipose, and muscle tissue reveal several C1QL protein and receptor pathways altering multiple cellular responses, including cell fusion, morphology, and adhesion. This review examines C1QL proteins across these systems, summarizing functional and disease associations and highlighting cellular responses based on in vitro and in vivo data, receptor interaction partners, and C1QL-associated protein signaling pathways. We highlight the functions of C1QL proteins in organizing CNS synapses, regulating synapse homeostasis, maintaining excitatory synapses, and mediating signaling and trans-synaptic connections. Yet, while these associations are known, present studies provide insufficient insight into the underlying molecular mechanism of their pleiotropy, including specific protein interactions and functional pathways. Thus, we suggest several areas for more in-depth and interdisciplinary hypothesis testing.
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Affiliation(s)
- Perla A Peña Palomino
- Department of Neuroscience, The University of Texas at Austin, Austin, Texas 208047, U.S.A
| | - Kylie C Black
- Department of Neuroscience, The University of Texas at Austin, Austin, Texas 208047, U.S.A
| | - Susanne Ressl
- Department of Neuroscience, The University of Texas at Austin, Austin, Texas 208047, U.S.A
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C1QL1/CTRP14 Is Largely Dispensable for Atherosclerosis Formation in Apolipoprotein-E-Deficient Mice. J Cardiovasc Dev Dis 2022; 9:jcdd9100341. [PMID: 36286293 PMCID: PMC9604636 DOI: 10.3390/jcdd9100341] [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: 08/10/2022] [Revised: 09/13/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
The purpose of this study was to investigate the influence of C1QL1 on atherosclerosis as well as the transcriptomic alteration of the aorta. While complement C1ql-like 1 (C1QL1) is one of the C1q/tumor-necrosis-factor-related protein (CTRP) family members, also known as CTRP14, and is synthesized and secreted mainly by the brain and adipose tissues, the functional properties of the C1QL1/CTRP14 protein outside the brain and adipocytes remain, however, unknown. In this regard, apolipoprotein E (ApoE) knockout (KO) mice were fed a Western diet and injected with adenovirus (Ad) green fluorescent protein or Ad-C1QL1 through the tail vein for 12 weeks. In contrast with the control cohort, the area of atherosclerotic plaque in ApoE KO mice overexpressing C1QL1 showed no significant difference, and the RNA sequence revealed that there were only 111 differentially expressed genes (DEGs) enriched in 26 signaling pathways of the mRNA profile in the aortic atherosclerosis lesions. This analysis also revealed the expression of several genes related to metabolism, organismal system, and human diseases such as type II diabetes, which are not associated with the formation of atherosclerosis in the aorta. These findings illustrate that C1QL1 is largely dispensable for atherosclerosis formation in ApoE-deficient mice and does not improve atherosclerotic plaque formation in the aorta.
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Zu G, Liu Y, Cao J, Zhao B, Zhang H, You L. BRPF1-KAT6A/KAT6B Complex: Molecular Structure, Biological Function and Human Disease. Cancers (Basel) 2022; 14:cancers14174068. [PMID: 36077605 PMCID: PMC9454415 DOI: 10.3390/cancers14174068] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 11/16/2022] Open
Abstract
The bromodomain and PHD finger–containing protein1 (BRPF1) is a member of family IV of the bromodomain-containing proteins that participate in the post-translational modification of histones. It functions in the form of a tetrameric complex with a monocytic leukemia zinc finger protein (MOZ or KAT6A), MOZ-related factor (MORF or KAT6B) or HAT bound to ORC1 (HBO1 or KAT7) and two small non-catalytic proteins, the inhibitor of growth 5 (ING5) or the paralog ING4 and MYST/Esa1-associated factor 6 (MEAF6). Mounting studies have demonstrated that all the four core subunits play crucial roles in different biological processes across diverse species, such as embryonic development, forebrain development, skeletal patterning and hematopoiesis. BRPF1, KAT6A and KAT6B mutations were identified as the cause of neurodevelopmental disorders, leukemia, medulloblastoma and other types of cancer, with germline mutations associated with neurodevelopmental disorders displaying intellectual disability, and somatic variants associated with leukemia, medulloblastoma and other cancers. In this paper, we depict the molecular structures and biological functions of the BRPF1-KAT6A/KAT6B complex, summarize the variants of the complex related to neurodevelopmental disorders and cancers and discuss future research directions and therapeutic potentials.
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Affiliation(s)
- Gaoyu Zu
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Ying Liu
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Jingli Cao
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Baicheng Zhao
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Hang Zhang
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Linya You
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
- Shanghai Key Laboratory of Medical Imaging Computing and Computer Assisted Intervention, Fudan University, Shanghai 200040, China
- Correspondence:
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