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Wang L, Yang X, Xie Y, Xu C, Dai X, Wang M, Liu Y. Nanoparticle-Protein Corona-Based Tissue Proteomics for the Aging Mouse Proteome Atlas. Anal Chem 2024; 96:14363-14371. [PMID: 39192740 DOI: 10.1021/acs.analchem.4c00932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Highly abundant proteins present in biological fluids and tissues significantly interfere with low-abundance protein identification by mass spectrometry (MS), limiting proteomic depth and hindering protein biomarker discovery. Herein, to enhance the coverage of tissue proteomics, we developed a nanoparticle-protein corona (NP-PC)-based method for the aging mouse proteome atlas. Based on this method, we investigated the complexity of life process of 5 major organs, including the heart, liver, spleen, lungs, and kidneys, from 4 groups of mice at different ages. Compared with the conventional strategy, NP-PC-based proteomics significantly increased the number of identified protein groups in the heart (from 3007 to 3927; increase of 30.6%), liver (from 2982 to 4610; increase of 54.6%), spleen (from 5047 to 7351; increase of 45.7%), lungs (from 4984 to 6903; increase of 38.5%), and kidneys (from 3550 to 5739; increase of 61.7%), and we identified a total of 10 104 protein groups. The overall data indicated that 3-week-old mice showed more differences compared with the other three age groups. The proteins of amino acid-related metabolism were increased in aged mice compared with those in the 3-week-old mice. Protein-related infections were increased in the spleen of the aged mice. Interestingly, the spliceosome-related pathway significantly changed from youth to elders in the liver, spleen, and lungs, indicating the vital role of the spliceosome during the aging process. Our established aging mouse organ proteome atlas provides comprehensive insights into understanding the aging process, and it may help in prevention and treatment of age-related diseases.
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Affiliation(s)
- Lichao Wang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
| | - Xu Yang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
| | - Yueli Xie
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Chenlu Xu
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
- Academy of Medical Engineering and Translational Medicine, Medical College, Tianjin University, Tianjin 300072, China
| | - Xin Dai
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
| | - Mengjie Wang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Yuan Liu
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
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Shi JJ, Liu HF, Hu T, Gao X, Zhang YB, Li WR, Wang Q, Zhang SJ, Tang D, Chen YB. Danggui-Shaoyao-San improves cognitive impairment through inhibiting O-GlcNAc-modification of estrogen α receptor in female db/db mice. JOURNAL OF ETHNOPHARMACOLOGY 2021; 281:114562. [PMID: 34438027 DOI: 10.1016/j.jep.2021.114562] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/29/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The traditional Chinese medicine formula Danggui-Shaoyao-San (DSS) has been reported to show therapeutic effect on dementia. AIM OF THE STUDY The present study aims to investigate whether DSS treatment could alleviate diabetes-induced cognitive dysfunction, and explores its neuroprotective mechanism on db/db mice. MATERIALS AND METHODS The female db/db mice were randomly divided into model group, DSS low-dose group and DSS high-dose group. Homologous female db/m mice were used as the control group. DSS was intragastric administrated for 15 weeks. Glucose tolerance, insulin tolerance, blood glucose and blood lipid levels were measured. Morris water maze was used to measure spatial learning and memory ability in mice. Nissl staining and Tunel staining were used to measure the changes of brain neurons, and ELISA kits were used to measure levels of inflammatory mediators (PGE2, TXB2 and LTB4). The kits detected oxidative stress (MDA, SOD, CAT, GSH-PX), nitrosative stress (NO, iNOS, TNOS) and glucose metabolism (LDH, PK, HK) levels. Western blot and immunofluorescence detected neurotrophic factors (PSD95, BDNF, NGF and SYN), apoptosis (Bcl-2, Bax, Bcl-xl, Caspase-3) and changes of ERα, O-GlcNAc, OGT, OGA levels. RESULTS Morris water maze results showed that DSS could improve the learning and memory abilities of female db/db mice. Nissl staining showed that DSS could relieve hippocampal neurons damage of db/db mice. In addition, the serological tests showed that DSS could improve the impaired glucose tolerance and insulin resistance, while reduce hyperlipemia in db/db mice. Besides, DSS treatment increased the activities of SOD, GSH-PX, and CAT, and reduced MDA, NO, iNOs, tNOS, PGE2, TXB2 and LTB4 levels. Western blot and immunofluorescence results of PSD95, BDNF, NGF, and SYN showed that DSS could improve the expressions of neurotrophic factors. Meanwhile, Tunel staning and Western blot (Bcl-2, Bax, Bcl-xl, Caspase-3) results indicated that DSS could reduce neuronal apoptosis. Finally, Western blot (ERα, O-GlcNAc, OGA, and OGT) and immunofluorescence (ERα and O-GlcNAc) results indicated that DSS could increase the levels of ERα and OGA, decrease the levels of O-GlcNAc and OGT. CONCLUSION DSS alleviate DE might be related to improve the abnormal O-GlcNAc-modification of ERα.
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Affiliation(s)
- Jing-Jing Shi
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China; Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hao-Fei Liu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China; Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Tian Hu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China; Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xin Gao
- Laboratory of Experimental Animal, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yong-Bin Zhang
- Laboratory of Experimental Animal, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wei-Rong Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China; Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qi Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China; Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shi-Jie Zhang
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China; Postdoctoral Research Station of Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China.
| | - Dan Tang
- Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM and Engineering & Technology Research Center for Chinese Materia Medica Quality of Guangdong Province, Guangdong Pharmaceutical University, Guangzhou, China.
| | - Yun-Bo Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China; Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China.
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DEAD-Box RNA Helicases in Cell Cycle Control and Clinical Therapy. Cells 2021; 10:cells10061540. [PMID: 34207140 PMCID: PMC8234093 DOI: 10.3390/cells10061540] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/11/2021] [Accepted: 06/15/2021] [Indexed: 12/11/2022] Open
Abstract
Cell cycle is regulated through numerous signaling pathways that determine whether cells will proliferate, remain quiescent, arrest, or undergo apoptosis. Abnormal cell cycle regulation has been linked to many diseases. Thus, there is an urgent need to understand the diverse molecular mechanisms of how the cell cycle is controlled. RNA helicases constitute a large family of proteins with functions in all aspects of RNA metabolism, including unwinding or annealing of RNA molecules to regulate pre-mRNA, rRNA and miRNA processing, clamping protein complexes on RNA, or remodeling ribonucleoprotein complexes, to regulate gene expression. RNA helicases also regulate the activity of specific proteins through direct interaction. Abnormal expression of RNA helicases has been associated with different diseases, including cancer, neurological disorders, aging, and autosomal dominant polycystic kidney disease (ADPKD) via regulation of a diverse range of cellular processes such as cell proliferation, cell cycle arrest, and apoptosis. Recent studies showed that RNA helicases participate in the regulation of the cell cycle progression at each cell cycle phase, including G1-S transition, S phase, G2-M transition, mitosis, and cytokinesis. In this review, we discuss the essential roles and mechanisms of RNA helicases in the regulation of the cell cycle at different phases. For that, RNA helicases provide a rich source of targets for the development of therapeutic or prophylactic drugs. We also discuss the different targeting strategies against RNA helicases, the different types of compounds explored, the proposed inhibitory mechanisms of the compounds on specific RNA helicases, and the therapeutic potential of these compounds in the treatment of various disorders.
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Paramanik V, Krishnan H, Kumar Thakur M. Estrogen Receptor α- and β-Interacting Proteins Contain Consensus Secondary Structures: An Insilico Study. Ann Neurosci 2018; 25:1-10. [PMID: 29887678 DOI: 10.1159/000481809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Background Estrogen receptor (ER)α and ERβ are ligand-activated transcription factors that regulate gene expression by binding to estrogen-responsive elements and interacting with several coregulators through protein-protein interactions. Usually, these coregulators bind to the various conserved and functional domains of the receptor through a consensus LXXLL sequence, although variations can be found. The interaction of receptor domains and the consensus motif can be a possible target for nuclear receptor (NR) pharmacology, since modifications in these are responsible for possible pathogenesis of various diseases. Purpose The present study focuses on the secondary structure and conserved domains of the ERα and ERβ interacting proteins, using bioinformatics tools and their relation to the function of the coregulators. Methods Bioinformatics-based prediction tools like STRING, PSIPRED, PROTPARAM and Conserved Domain Database (CDD) were used. The prediction tools utilized in this study basically determines the characteristics of a possible coregulator by using an already existing protein as a template and determines the presence of any conserved consensus sequence. Coregulators have been enlisted with the help of NCBI, STRING and iHOP. The secondary structures were analyzed using PSIPRED and conserved domains were determined using CDD. Results The analysis of the structure has shown the presence of conserved domains and homology between the various coregulators. Each interacting protein contains conserved domains like the nuclear coactivators' domain, the helix-loop-helix domain and the SRC domain. Conclusion Such studies give the characteristic features of ERα and ERβ interacting proteins and maybe useful to determine their family and uses in NR pharmacology in health and diseases.
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Affiliation(s)
- Vijay Paramanik
- Department of Zoology, Cellular and Molecular Neurobiology and Drug Targeting Laboratory, Indira Gandhi National Tribal University, Amarkantak, India
| | - Harini Krishnan
- Department of Zoology, Biochemistry and Molecular Biology Laboratory, Banaras Hindu University, Varanasi, India
| | - Mahendra Kumar Thakur
- Department of Zoology, Biochemistry and Molecular Biology Laboratory, Banaras Hindu University, Varanasi, India
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Wang Z, Luo Z, Zhou L, Li X, Jiang T, Fu E. DDX5 promotes proliferation and tumorigenesis of non-small-cell lung cancer cells by activating β-catenin signaling pathway. Cancer Sci 2015. [PMID: 26212035 PMCID: PMC4638002 DOI: 10.1111/cas.12755] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The DEAD-box-protein DDX5 is an ATP-dependent RNA helicase that is frequently overexpressed in various cancers and acts as a transcriptional co-activator of several transcription factors, including β-catenin. DDX5 is reported to be involved in cancer progression by promoting cell proliferation and epithelial-mesenchymal transition. However, the clinical significance and biological role of DDX5 in non-small-cell lung cancer (NSCLC) remain largely unknown. In this study, we examined the expression of DDX5 in clinical NSCLC samples, investigated its role in regulating NSCLC cell proliferation and tumorigenesis, and explored the possible molecular mechanism. We found that DDX5 was significantly overexpressed in NSCLC tissues as compared with the matched normal adjacent tissues. In addition, overexpression of DDX5 was associated with advanced clinical stage, higher Ki67 index, and shorter overall survival in NSCLC patients. Upregulation of DDX5 promoted proliferation of NSCLC cells in vitro and growth of NSCLC xenografts in vivo, whereas downregulation of DDX5 showed the opposite effects. Furthermore, DDX5 directly interacted with β-catenin, promoted its nuclear translocation, and co-activated the expression of cyclin D1 and c-Myc. β-catenin silencing significantly abrogated DDX5-induced cyclin D1 and c-Myc expression and proliferation in NSCLC cells. Interestingly, DDX5 and cyclin D1 expression followed positive correlation in the same set of NSCLC samples. These findings indicated that DDX5 played an important role in the proliferation and tumorigenesis of NSCLC cells by activating the β-catenin signaling pathway. Therefore, DDX5 may serve as a novel prognostic marker and potential therapeutic target in the treatment of NSCLC.
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Affiliation(s)
- Zhendong Wang
- Department of Thoracic Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Zhonghua Luo
- Department of Interventional Radiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Lin Zhou
- Department of Thoracic Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Xiaofei Li
- Department of Thoracic Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Tao Jiang
- Department of Thoracic Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Enqing Fu
- Department of Respiratory Medicine, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
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Arisi I, D'Onofrio M, Brandi R, Cattaneo A, Bertolazzi P, Cumbo F, Felici G, Guerra C. Time dynamics of protein complexes in the AD11 transgenic mouse model for Alzheimer's disease like pathology. BMC Neurosci 2015; 16:28. [PMID: 25925689 PMCID: PMC4436769 DOI: 10.1186/s12868-015-0155-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 03/11/2015] [Indexed: 11/20/2022] Open
Abstract
Background Many approaches exist to integrate protein-protein interaction data with other sources of information, most notably with gene co-expression data, to obtain information on network dynamics. It is of interest to look at groups of interacting gene products that form a protein complex. We were interested in applying new tools to the characterization of pathogenesis and dynamic events of an Alzheimer’s-like neurodegenerative model, the AD11 mice, expressing an anti-NGF monoclonal antibody. The goal was to quantify the impact of neurodegeneration on protein complexes, by measuring the correlation between gene expression data by different metrics. Results Data were extracted from the gene expression profile of AD11 brain, obtained by Agilent microarray, at 1, 3, 6, 15 months of age. For genes coding proteins in complexes, the correlation matrix of pairwise expression was computed. The dynamics between correlation matrices at different time points was evaluated: paired T-test between average correlation levels and a normalized Euclidean distance with z-score. We unveiled a differential wiring of interactions in a set of complexes, whose network structure discriminates between transgenic and control mice. Furthermore, we analyzed the dynamics of gene expression values, by looking at changes in gene-to-gene correlation over time and identified those complexes that exhibit a different timedependent behaviour between transgenic and controls. The most significant changes in correlation dynamics are concentrated in the early stage of disease, with higher correlation in AD11 mice compared to controls. Many complexes go through dynamic changes over time, showing the role of the dysfunctional immunoproteasome, as early neurodegenerative disease event. Furthermore, this analysis shows key events in the neurodegeneration process of the AD11 model, by identifying significant differences in co-expression values of other complexes, such as parvulin complex, with a role in protein misfolding and proteostasis, and of complexes involved in transcriptional mechanisms. Conclusions We have proposed a novel approach to analyze the network structure of protein complexes, by two different measures to evaluate the dynamics of gene-gene correlation matrices from gene expression profiles. The methodology was able to investigate the re-organization of interactions within protein complexes in the AD11 model of neurodegeneration.
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Affiliation(s)
- Ivan Arisi
- Genomics Facility, European Brain Research Institute (EBRI) Rita Levi-Montalcini, Via del Fosso di Fiorano, 64, 00143, Rome, Italy.
| | - Mara D'Onofrio
- Genomics Facility, European Brain Research Institute (EBRI) Rita Levi-Montalcini, Via del Fosso di Fiorano, 64, 00143, Rome, Italy.
| | - Rossella Brandi
- Genomics Facility, European Brain Research Institute (EBRI) Rita Levi-Montalcini, Via del Fosso di Fiorano, 64, 00143, Rome, Italy.
| | - Antonino Cattaneo
- Neurotrophic Factors and Neurodegenerative Diseases Unit, EBRI, Rome, Italy. .,Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126, Pisa, Italy.
| | - Paola Bertolazzi
- Istituto di Analisi dei Sistemi ed Informatica "Antonio Ruberti" (IASI-CNR), Rome, Italy.
| | - Fabio Cumbo
- Istituto di Analisi dei Sistemi ed Informatica "Antonio Ruberti" (IASI-CNR), Rome, Italy.
| | - Giovanni Felici
- Istituto di Analisi dei Sistemi ed Informatica "Antonio Ruberti" (IASI-CNR), Rome, Italy.
| | - Concettina Guerra
- Istituto di Analisi dei Sistemi ed Informatica "Antonio Ruberti" (IASI-CNR), Rome, Italy. .,College of Computing, Georgia Institute of Technology, Atlanta, GA, USA.
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Cui J, Shen Y, Li R. Estrogen synthesis and signaling pathways during aging: from periphery to brain. Trends Mol Med 2013; 19:197-209. [PMID: 23348042 DOI: 10.1016/j.molmed.2012.12.007] [Citation(s) in RCA: 461] [Impact Index Per Article: 41.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 12/18/2012] [Accepted: 12/27/2012] [Indexed: 01/05/2023]
Abstract
Estrogens are the primary female sex hormones and play important roles in both reproductive and non-reproductive systems. Estrogens can be synthesized in non-reproductive tissues such as liver, heart, muscle, bone and brain, and tissue-specific estrogen synthesis is consistent with a diversity of estrogen actions. In this article we review tissue and cell-specific estrogen synthesis and estrogen receptor signaling in three parts: (i) synthesis and metabolism, (ii) the distribution of estrogen receptors and signaling, and (iii) estrogen functions and related disorders, including cardiovascular diseases, osteoporosis, Alzheimer's disease (AD), and Parkinson disease (PD). This comprehensive review provides new insights into estrogens by giving a better understanding of the tissue-specific estrogen effects and their roles in various diseases.
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Affiliation(s)
- Jie Cui
- Center for Hormone Advanced Science and Education (CHASE), Roskamp Institute, Sarasota, FL 34243, USA
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Paramanik V, Thakur MK. AIB1 shows variation in interaction with ERβTAD and expression as a function of age in mouse brain. Biogerontology 2011; 12:321-8. [PMID: 21442277 DOI: 10.1007/s10522-011-9330-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Accepted: 03/12/2011] [Indexed: 11/29/2022]
Abstract
Estrogen mediates its multiple functions in the brain through the recruitment of a number of interacting proteins. In this paper, we report the identification of 160 kD interacting nuclear protein of estrogen receptor (ER)β-transactivation domain (TAD) as amplified in breast cancer 1(AIB1) by pull down assay, immunoblotting, far-western analysis and immunoprecipitation. Further we show the age dependent interaction and expression of AIB1 in the brain of young (6 weeks), adult (25 weeks) and old (70 weeks) AKR strain mice of both sexes. The immunoprecipitation data revealed higher interaction of AIB1 in young than adult and old male mice. In contrast, the interaction was low in young, increased in adult but decreased in old female. However, immunoblotting showed age related increase in the expression of AIB1 in both male and female mice. Further, the level of interaction of AIB1 with ERβTAD in young and old male was significantly higher than female of same age, whereas the expression of AIB1 in adult and old female was significantly higher than male of same age. These data suggest that such age dependent variation in the interaction of AIB1 with ERβTAD and its expression may be helpful to regulate estrogen-mediated gene functions during aging and neurodegenerative diseases.
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Affiliation(s)
- Vijay Paramanik
- Biochemistry and Molecular Biology Laboratory, Centre of Advanced Study, Department of Zoology, Banaras Hindu University, Varanasi, 221 005, India
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Paramanik V, Thakur MK. Interaction of Estrogen Receptor Associated Protein (ERAP) 140 with ER beta decreases but its expression increases in aging mouse cerebral cortex. Cell Mol Neurobiol 2010; 30:961-6. [PMID: 20446107 DOI: 10.1007/s10571-010-9526-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Accepted: 04/21/2010] [Indexed: 12/25/2022]
Abstract
Following binding to cognate ligand, estrogen receptor (ER) beta interacts with specific responsive elements of the target genes and recruits a host of nuclear proteins for hormone dependent gene regulation. However, it is poorly known which proteins interact with ER beta in mouse brain and whether their interaction and expression change with age. In this report, we have used his-tag mouse ER beta for interaction with nuclear proteins of cerebral cortex of young (6 +/- 1 weeks), adult (25 +/- 2 weeks), and old (70 +/- 5 weeks) female mice. We have identified estrogen receptor-associated protein (ERAP) 140 as one of the interacting proteins and studied its interaction by pull down immunoblotting, far-Western blotting and immunoprecipitation, and expression by western blotting. The data show that ERAP 140 interacts with ER beta and its interaction decreases but its expression increases with age in mouse cerebral cortex, suggesting its role in estrogen-mediated brain functions during aging.
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Affiliation(s)
- Vijay Paramanik
- Biochemistry and Molecular Biology Laboratory, Centre of Advanced study, Department of Zoology, Banaras Hindu University, Varanasi, 221 005, India
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Ghosh S, Thakur M. Age-dependent decrease in the interaction of β-tubulin with estrogen receptor alpha transactivation domain in mouse brain. Neurosci Lett 2009; 464:218-21. [DOI: 10.1016/j.neulet.2009.08.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2009] [Revised: 08/20/2009] [Accepted: 08/20/2009] [Indexed: 11/27/2022]
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