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Chen Y, Guo P, Dong Z. The role of histone acetylation in transcriptional regulation and seed development. PLANT PHYSIOLOGY 2024; 194:1962-1979. [PMID: 37979164 DOI: 10.1093/plphys/kiad614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 10/09/2023] [Accepted: 10/29/2023] [Indexed: 11/20/2023]
Abstract
Histone acetylation is highly conserved across eukaryotes and has been linked to gene activation since its discovery nearly 60 years ago. Over the past decades, histone acetylation has been evidenced to play crucial roles in plant development and response to various environmental cues. Emerging data indicate that histone acetylation is one of the defining features of "open chromatin," while the role of histone acetylation in transcription remains controversial. In this review, we briefly describe the discovery of histone acetylation, the mechanism of histone acetylation regulating transcription in yeast and mammals, and summarize the research progress of plant histone acetylation. Furthermore, we also emphasize the effect of histone acetylation on seed development and its potential use in plant breeding. A comprehensive knowledge of histone acetylation might provide new and more flexible research perspectives to enhance crop yield and stress resistance.
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Affiliation(s)
- Yan Chen
- Guangdong Provincial Key Laboratory of Plant Adaptation and Molecular Design, Guangzhou Key Laboratory of Crop Gene Editing, Innovative Center of Molecular Genetics and Evolution, School of Life Sciences, Guangzhou University, Guangzhou 510006, China
| | - Peiguo Guo
- Guangdong Provincial Key Laboratory of Plant Adaptation and Molecular Design, Guangzhou Key Laboratory of Crop Gene Editing, Innovative Center of Molecular Genetics and Evolution, School of Life Sciences, Guangzhou University, Guangzhou 510006, China
| | - Zhicheng Dong
- Guangdong Provincial Key Laboratory of Plant Adaptation and Molecular Design, Guangzhou Key Laboratory of Crop Gene Editing, Innovative Center of Molecular Genetics and Evolution, School of Life Sciences, Guangzhou University, Guangzhou 510006, China
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2
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Okekawa A, Wada T, Onogi Y, Takeda Y, Miyazawa Y, Sasahara M, Tsuneki H, Sasaoka T. Platelet-derived growth factor signaling in pericytes promotes hypothalamic inflammation and obesity. Mol Med 2024; 30:21. [PMID: 38317079 PMCID: PMC10845801 DOI: 10.1186/s10020-024-00793-z] [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: 10/05/2023] [Accepted: 01/25/2024] [Indexed: 02/07/2024] Open
Abstract
BACKGROUND Pericytes are a vital component of the blood-brain barrier, and their involvement in acute inflammation was recently suggested. However, it remains unclear whether pericytes contribute to hypothalamic chronic inflammation and energy metabolism in obesity. The present study investigated the impact of pericytes on the pathophysiology of obesity by focusing on platelet-derived growth factor (PDGF) signaling, which regulates pericyte functions. METHODS Tamoxifen-inducible systemic conditional PDGF receptor β knockout mice (Pdgfrb∆SYS-KO) and Calcium/calmodulin-dependent protein kinase type IIa (CaMKIIa)-positive neuron-specific PDGF receptor β knockout mice (Pdgfrb∆CaMKII-KO) were fed a high-fat diet, and metabolic phenotypes before and 3 to 4 weeks after dietary loading were examined. Intracellular energy metabolism and relevant signal transduction in lipopolysaccharide- and/or platelet-derived growth factor-BB (PDGF-BB)-stimulated human brain pericytes (HBPCs) were assessed by the Seahorse XFe24 Analyzer and Western blotting. The pericyte secretome in conditioned medium from HBPCs was studied using cytokine array kit, and its impact on polarization was examined in bone marrow-derived macrophages (BMDMs), which are microglia-like cells. RESULTS Energy consumption increased and body weight gain decreased after high-fat diet loading in Pdgfrb∆SYS-KO mice. Cellular oncogene fos (cFos) expression increased in proopiomelanocortin (POMC) neurons, whereas microglial numbers and inflammatory gene expression decreased in the hypothalamus of Pdgfrb∆SYS-KO mice. No significant changes were observed in Pdgfrb∆CaMKII-KO mice. In HBPCs, a co-stimulation with lipopolysaccharide and PDGF-BB shifted intracellular metabolism towards glycolysis, activated mitogen-activated protein kinase (MAPK), and modulated the secretome to the inflammatory phenotype. Consequently, the secretome showed an increase in various proinflammatory chemokines and growth factors including Epithelial-derived neutrophil-activating peptide 78 (C-X-C motif chemokine ligand (CXCL)5), Thymus and activation-regulated chemokine (C-C motif chemokine (CCL)17), Monocyte chemoattractant protein 1 (CCL2), and Growth-regulated oncogene α (CXCL1). Furthermore, conditioned medium from HBPCs stimulated the inflammatory priming of BMDMs, and this change was abolished by the C-X-C motif chemokine receptor (CXCR) inhibitor. Consistently, mRNA expression of CXCL5 was elevated by lipopolysaccharide and PDGF-BB treatment in HBPCs, and the expression was significantly lower in the hypothalamus of Pdgfrb∆SYS-KO mice than in control Pdgfrbflox/flox mice (FL) following 4 weeks of HFD feeding. CONCLUSIONS PDGF receptor β signaling in hypothalamic pericytes promotes polarization of macrophages by changing their secretome and contributes to the progression of obesity.
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Affiliation(s)
- Akira Okekawa
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Tsutomu Wada
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
| | - Yasuhiro Onogi
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
- Research Center for Pre-Disease Science, University of Toyama, 2630 Sugitani, Toyama, Japan
| | - Yuki Takeda
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Yuichiro Miyazawa
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Masakiyo Sasahara
- Department of Pathology, University of Toyama, 2630 Sugitani, Toyama, Japan
| | - Hiroshi Tsuneki
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
- Department of Integrative Pharmacology, University of Toyama, 2630 Sugitani, Toyama, Japan
| | - Toshiyasu Sasaoka
- Department of Clinical Pharmacology, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
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Guo X, Liang K, Xia L, Zhang X, Liu J, Wang C, Li J, Li X, Hou X, Chen L. Mof plays distinct roles in hepatic lipid metabolism under healthy or non-alcoholic fatty liver conditions. iScience 2023; 26:108446. [PMID: 38034359 PMCID: PMC10687339 DOI: 10.1016/j.isci.2023.108446] [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: 04/17/2023] [Revised: 09/11/2023] [Accepted: 11/09/2023] [Indexed: 12/02/2023] Open
Abstract
The disturbance of hepatic lipid metabolism has a strong association with non-alcoholic fatty liver disease (NAFLD) and diabetes. Mof, an acetyltransferase involved in obesity and carbon metabolism, has not been thoroughly examined in its connection to hepatic metabolism. We aimed to explore the impact of Mof on hepatic lipid metabolism. The alteration of Mof expression was found in both obese mice and NAFLD human liver. The genes regulated by Mof were closely associated with lipid metabolism. In normal mice or hepatic cells, the down-regulation or inhibition of Mof resulted in increased lipid accumulation due to decreased PPARα expression. Conversely, in diet-induced obesity (DIO) mice or hepatic cells treated with palmitic acid, the inhibition of Mof led to improved lipid metabolism, attributed to the reduction in p-mTOR/mTOR levels. In summary, Mof exhibited distinct roles in lipid metabolism under different conditions. The inhibition of Mof may hold potential as a therapeutic target for hepatic lipid metabolism disturbances.
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Affiliation(s)
- Xinghong Guo
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong 250012, China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong 250012, China
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, Shandong 250012, China
| | - Kai Liang
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong 250012, China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong 250012, China
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, Shandong 250012, China
| | - Longqing Xia
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Xu Zhang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, Life Science School of Shandong University, Qingdao, Shandong 266237, China
| | - Jinbo Liu
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong 250012, China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong 250012, China
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, Shandong 250012, China
| | - Chuan Wang
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong 250012, China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong 250012, China
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, Shandong 250012, China
| | - Jinquan Li
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong 250012, China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong 250012, China
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, Shandong 250012, China
| | - Xiangzhi Li
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, Life Science School of Shandong University, Qingdao, Shandong 266237, China
| | - Xinguo Hou
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong 250012, China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong 250012, China
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, Shandong 250012, China
| | - Li Chen
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong 250012, China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong 250012, China
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, Shandong 250012, China
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Guhathakurta S, Erdogdu NU, Hoffmann JJ, Grzadzielewska I, Schendzielorz A, Seyfferth J, Mårtensson CU, Corrado M, Karoutas A, Warscheid B, Pfanner N, Becker T, Akhtar A. COX17 acetylation via MOF-KANSL complex promotes mitochondrial integrity and function. Nat Metab 2023; 5:1931-1952. [PMID: 37813994 PMCID: PMC10663164 DOI: 10.1038/s42255-023-00904-w] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 09/06/2023] [Indexed: 10/11/2023]
Abstract
Reversible acetylation of mitochondrial proteins is a regulatory mechanism central to adaptive metabolic responses. Yet, how such functionally relevant protein acetylation is achieved remains unexplored. Here we reveal an unprecedented role of the MYST family lysine acetyltransferase MOF in energy metabolism via mitochondrial protein acetylation. Loss of MOF-KANSL complex members leads to mitochondrial defects including fragmentation, reduced cristae density and impaired mitochondrial electron transport chain complex IV integrity in primary mouse embryonic fibroblasts. We demonstrate COX17, a complex IV assembly factor, as a bona fide acetylation target of MOF. Loss of COX17 or expression of its non-acetylatable mutant phenocopies the mitochondrial defects observed upon MOF depletion. The acetylation-mimetic COX17 rescues these defects and maintains complex IV activity even in the absence of MOF, suggesting an activatory role of mitochondrial electron transport chain protein acetylation. Fibroblasts from patients with MOF syndrome who have intellectual disability also revealed respiratory defects that could be restored by alternative oxidase, acetylation-mimetic COX17 or mitochondrially targeted MOF. Overall, our findings highlight the critical role of MOF-KANSL complex in mitochondrial physiology and provide new insights into MOF syndrome.
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Affiliation(s)
- Sukanya Guhathakurta
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Niyazi Umut Erdogdu
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Juliane J Hoffmann
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, University of Bonn, Bonn, Germany
| | - Iga Grzadzielewska
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | | | - Janine Seyfferth
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Christoph U Mårtensson
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Mauro Corrado
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Institute for Genetics, University of Cologne, Cologne, Germany
| | - Adam Karoutas
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Bettina Warscheid
- Institute of Biology II, Faculty of Biology, University of Freiburg, Freiburg, Germany
- Signaling Research Centers BIOSS and CIBSS, University of Freiburg, Freiburg, Germany
- Theodor Boveri-Institute, University of Würzburg, Würzburg, Germany
| | - Nikolaus Pfanner
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Signaling Research Centers BIOSS and CIBSS, University of Freiburg, Freiburg, Germany
| | - Thomas Becker
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, University of Bonn, Bonn, Germany
| | - Asifa Akhtar
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany.
- Signaling Research Centers BIOSS and CIBSS, University of Freiburg, Freiburg, Germany.
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Tsang TH, Wiese M, Helmstädter M, Stehle T, Seyfferth J, Shvedunova M, Holz H, Walz G, Akhtar A. Transcriptional regulation by the NSL complex enables diversification of IFT functions in ciliated versus nonciliated cells. SCIENCE ADVANCES 2023; 9:eadh5598. [PMID: 37624894 PMCID: PMC10456878 DOI: 10.1126/sciadv.adh5598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 07/25/2023] [Indexed: 08/27/2023]
Abstract
Members of the NSL histone acetyltransferase complex are involved in multiorgan developmental syndromes. While the NSL complex is known for its importance in early development, its role in fully differentiated cells remains enigmatic. Using a kidney-specific model, we discovered that deletion of NSL complex members KANSL2 or KANSL3 in postmitotic podocytes led to catastrophic kidney dysfunction. Systematic comparison of two primary differentiated cell types reveals the NSL complex as a master regulator of intraciliary transport genes in both dividing and nondividing cells. NSL complex ablation led to loss of cilia and impaired sonic hedgehog pathway in ciliated fibroblasts. By contrast, nonciliated podocytes responded with altered microtubule dynamics and obliterated podocyte functions. Finally, overexpression of wild-type but not a double zinc finger (ZF-ZF) domain mutant of KANSL2 rescued the transcriptional defects, revealing a critical function of this domain in NSL complex assembly and function. Thus, the NSL complex exhibits bifurcation of functions to enable diversity of specialized outcomes in differentiated cells.
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Affiliation(s)
- Tsz Hong Tsang
- Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
- Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
- International Max Planck Research School for Molecular and Cellular Biology (IMPRS-MCB), 79108 Freiburg, Germany
| | - Meike Wiese
- Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Martin Helmstädter
- Department of Medicine IV, University Freiburg Medical Center, Faculty of Medicine, University of Freiburg, Hugstetter Strasse 55, 79106 Freiburg, Germany
| | - Thomas Stehle
- Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Janine Seyfferth
- Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Maria Shvedunova
- Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Herbert Holz
- Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Gerd Walz
- Department of Medicine IV, University Freiburg Medical Center, Faculty of Medicine, University of Freiburg, Hugstetter Strasse 55, 79106 Freiburg, Germany
- BIOSS Centre for Biological Signalling Studies, University of Freiburg, Schänzlestrasse 18, 79104 Freiburg, Germany
- CIBSS Centre for Integrative Biological Signalling Studies, University of Freiburg, Schänzlestrasse 18, 79104 Freiburg, Germany
| | - Asifa Akhtar
- Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
- CIBSS Centre for Integrative Biological Signalling Studies, University of Freiburg, Schänzlestrasse 18, 79104 Freiburg, Germany
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6
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The Role of Pericytes in Regulation of Innate and Adaptive Immunity. Biomedicines 2023; 11:biomedicines11020600. [PMID: 36831136 PMCID: PMC9953719 DOI: 10.3390/biomedicines11020600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 02/03/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
Pericytes are perivascular multipotent cells wrapping microvascular capillaries, where they support vasculature functioning, participate in tissue regeneration, and regulate blood flow. However, recent evidence suggests that in addition to traditionally credited structural function, pericytes also manifest immune properties. In this review, we summarise recent data regarding pericytes' response to different pro-inflammatory stimuli and their involvement in innate immune responses through expression of pattern-recognition receptors. Moreover, pericytes express various adhesion molecules, thus regulating trafficking of immune cells across vessel walls. Additionally, the role of pericytes in modulation of adaptive immunity is discussed. Finally, recent reports have suggested that the interaction with cancer cells evokes immunosuppression function in pericytes, thus facilitating immune evasion and facilitating cancer proliferation and metastasis. However, such complex and multi-faceted cross-talks of pericytes with immune cells also suggest a number of potential pericyte-based therapeutic methods and techniques for cancer immunotherapy and treatment of autoimmune and auto-inflammatory disorders.
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7
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Overnight Corticosterone and Gene Expression in Mouse Hippocampus: Time Course during Resting Period. Int J Mol Sci 2023; 24:ijms24032828. [PMID: 36769150 PMCID: PMC9917930 DOI: 10.3390/ijms24032828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 02/05/2023] Open
Abstract
The aim of the experiment was to test the effect of an elevated level of glucocorticoids on the mouse hippocampal transcriptome after 12 h of treatment with corticosterone that was administered during an active phase of the circadian cycle. Additionally, we also tested the circadian changes in gene expression and the decay time of transcriptomic response to corticosterone. Gene expression was analyzed using microarrays. Obtained results show that transcriptomic responses to glucocorticoids are heterogeneous in terms of the decay time with some genes displaying persistent changes in expression during 9 h of rest. We have also found a considerable overlap between genes regulated by corticosterone and genes implicated previously in stress response. The examples of such genes are Acer2, Agt, Apod, Aqp4, Etnppl, Fabp7, Fam107a, Fjx1, Fmo2, Galnt15, Gjc2, Heph, Hes5, Htra1, Jdp2, Kif5a, Lfng, Lrg1, Mgp, Mt1, Pglyrp1, Pla2g3, Plin4, Pllp, Ptgds, Ptn, Slc2a1, Slco1c1, Sult1a1, Thbd and Txnip. This indicates that the applied model is a useful tool for the investigation of mechanisms underlying the stress response.
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8
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Oliveira F, Bondareva O, Rodríguez-Aguilera JR, Sheikh BN. Cultured brain pericytes adopt an immature phenotype and require endothelial cells for expression of canonical markers and ECM genes. Front Cell Neurosci 2023; 17:1165887. [PMID: 37201162 PMCID: PMC10185779 DOI: 10.3389/fncel.2023.1165887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/05/2023] [Indexed: 05/20/2023] Open
Abstract
Pericytes (PCs) are essential components of the blood brain barrier. Brain PCs are critical for dynamically regulating blood flow, for maintaining vascular integrity and their dysregulation is associated with a myriad of disorders such as Alzheimer's disease. To understand their physiological and molecular functions, studies have increasingly focused on primary brain PC isolation and culture. Multiple methods for PC culture have been developed over the years, however, it is still unclear how primary PCs compare to their in vivo counterparts. To address this question, we compared cultured brain PCs at passage 5 and 20 to adult and embryonic brain PCs directly isolated from mouse brains via single cell RNA-seq. Cultured PCs were highly homogeneous, and were most similar to embryonic PCs, while displaying a significantly different transcriptional profile to adult brain PCs. Cultured PCs downregulated canonical PC markers and extracellular matrix (ECM) genes. Importantly, expression of PC markers and ECM genes could be improved by co-culture with brain endothelial cells, showing the importance of the endothelium in maintaining PC identity and function. Taken together, these results highlight key transcriptional differences between cultured and in vivo PCs which should be considered when performing in vitro experiments with brain PCs.
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Affiliation(s)
- Fabiana Oliveira
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Faculty, Leipzig University, Leipzig, Germany
| | - Olga Bondareva
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Faculty, Leipzig University, Leipzig, Germany
| | - Jesús Rafael Rodríguez-Aguilera
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Faculty, Leipzig University, Leipzig, Germany
| | - Bilal N. Sheikh
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Faculty, Leipzig University, Leipzig, Germany
- *Correspondence: Bilal N. Sheikh,
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9
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He H, Yang W, Su N, Zhang C, Dai J, Han F, Singhal M, Bai W, Zhu X, Zhu J, Liu Z, Xia W, Liu X, Zhang C, Jiang K, Huang W, Chen D, Wang Z, He X, Kirchhoff F, Li Z, Liu C, Huan J, Wang X, Wei W, Wang J, Augustin HG, Hu J. Activating NO-sGC crosstalk in the mouse vascular niche promotes vascular integrity and mitigates acute lung injury. J Exp Med 2022; 220:213673. [PMID: 36350314 PMCID: PMC9984546 DOI: 10.1084/jem.20211422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/20/2022] [Accepted: 10/27/2022] [Indexed: 11/11/2022] Open
Abstract
Disruption of endothelial cell (ECs) and pericytes interactions results in vascular leakage in acute lung injury (ALI). However, molecular signals mediating EC-pericyte crosstalk have not been systemically investigated, and whether targeting such crosstalk could be adopted to combat ALI remains elusive. Using comparative genome-wide EC-pericyte crosstalk analysis of healthy and LPS-challenged lungs, we discovered that crosstalk between endothelial nitric oxide and pericyte soluble guanylate cyclase (NO-sGC) is impaired in ALI. Indeed, stimulating the NO-sGC pathway promotes vascular integrity and reduces lung edema and inflammation-induced lung injury, while pericyte-specific sGC knockout abolishes this protective effect. Mechanistically, sGC activation suppresses cytoskeleton rearrangement in pericytes through inhibiting VASP-dependent F-actin formation and MRTFA/SRF-dependent de novo synthesis of genes associated with cytoskeleton rearrangement, thereby leading to the stabilization of EC-pericyte interactions. Collectively, our data demonstrate that impaired NO-sGC crosstalk in the vascular niche results in elevated vascular permeability, and pharmacological activation of this crosstalk represents a promising translational therapy for ALI.
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Affiliation(s)
- Hao He
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Wu Yang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Nan Su
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Chuankai Zhang
- Department of Burn and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jianing Dai
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Feng Han
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Mahak Singhal
- Laboratory of AngioRhythms, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Wenjuan Bai
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaolan Zhu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Jing Zhu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Zhen Liu
- University of Chinese Academy of Sciences, Beijing, China,Chinese Academy of Sciences Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, China
| | - Wencheng Xia
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Xiaoting Liu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Chonghe Zhang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Kai Jiang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Wenhui Huang
- Department of Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, Homburg, Germany
| | - Dan Chen
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Zhaoyin Wang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Xueyang He
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Frank Kirchhoff
- Department of Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, Homburg, Germany
| | - Zhenyu Li
- Texas A&M Health Science Center, Bryan, TX
| | - Cong Liu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Jingning Huan
- Department of Burn and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaohong Wang
- Department of Pharmacology and Tianjin Key Laboratory of Inflammation Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Wu Wei
- University of Chinese Academy of Sciences, Beijing, China,Chinese Academy of Sciences Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, China
| | - Jing Wang
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hellmut G. Augustin
- Division of Vascular Oncology and Metastasis, German Cancer Research Center (DKFZ-ZMBH Alliance), Heidelberg, Germany,Department of Vascular Biology and Tumor Angiogenesis, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Junhao Hu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China,Correspondence to Junhao Hu:
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10
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Bondareva O, Rodríguez-Aguilera JR, Oliveira F, Liao L, Rose A, Gupta A, Singh K, Geier F, Schuster J, Boeckel JN, Buescher JM, Kohli S, Klöting N, Isermann B, Blüher M, Sheikh BN. Single-cell profiling of vascular endothelial cells reveals progressive organ-specific vulnerabilities during obesity. Nat Metab 2022; 4:1591-1610. [PMID: 36400935 PMCID: PMC9684070 DOI: 10.1038/s42255-022-00674-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 09/30/2022] [Indexed: 11/20/2022]
Abstract
Obesity promotes diverse pathologies, including atherosclerosis and dementia, which frequently involve vascular defects and endothelial cell (EC) dysfunction. Each organ has distinct EC subtypes, but whether ECs are differentially affected by obesity is unknown. Here we use single-cell RNA sequencing to analyze transcriptomes of ~375,000 ECs from seven organs in male mice at progressive stages of obesity to identify organ-specific vulnerabilities. We find that obesity deregulates gene expression networks, including lipid handling, metabolic pathways and AP1 transcription factor and inflammatory signaling, in an organ- and EC-subtype-specific manner. The transcriptomic aberrations worsen with sustained obesity and are only partially mitigated by dietary intervention and weight loss. For example, dietary intervention substantially attenuates dysregulation of liver, but not kidney, EC transcriptomes. Through integration with human genome-wide association study data, we further identify a subset of vascular disease risk genes that are induced by obesity. Our work catalogs the impact of obesity on the endothelium, constitutes a useful resource and reveals leads for investigation as potential therapeutic targets.
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Affiliation(s)
- Olga Bondareva
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Jesús Rafael Rodríguez-Aguilera
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Fabiana Oliveira
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Longsheng Liao
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Alina Rose
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Anubhuti Gupta
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Kunal Singh
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Florian Geier
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
| | - Jenny Schuster
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
| | - Jes-Niels Boeckel
- Klinik und Poliklinik für Kardiologie, Universitätsklinikum Leipzig, University of Leipzig, Leipzig, Germany
| | - Joerg M Buescher
- Max Planck Institute for Immunobiology and Epigenetics, Freiburg im Breisgau, Germany
| | - Shrey Kohli
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Nora Klöting
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Matthias Blüher
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany
- Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig, Leipzig, Germany
| | - Bilal N Sheikh
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich, Leipzig, Germany.
- Medical Faculty, University of Leipzig, Leipzig, Germany.
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11
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Chakraborty S, Singh M, Pandita RK, Singh V, Lo CS, Leonard F, Horikoshi N, Moros EG, Guha D, Hunt CR, Chau E, Ahmed KM, Sethi P, Charaka V, Godin B, Makhijani K, Scherthan H, Deck J, Hausmann M, Mushtaq A, Altaf M, Ramos KS, Bhat KM, Taneja N, Das C, Pandita TK. Heat-induced SIRT1-mediated H4K16ac deacetylation impairs resection and SMARCAD1 recruitment to double strand breaks. iScience 2022; 25:104142. [PMID: 35434547 PMCID: PMC9010620 DOI: 10.1016/j.isci.2022.104142] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/16/2022] [Accepted: 03/21/2022] [Indexed: 12/17/2022] Open
Abstract
Hyperthermia inhibits DNA double-strand break (DSB) repair that utilizes homologous recombination (HR) pathway by a poorly defined mechanism(s); however, the mechanisms for this inhibition remain unclear. Here we report that hyperthermia decreases H4K16 acetylation (H4K16ac), an epigenetic modification essential for genome stability and transcription. Heat-induced reduction in H4K16ac was detected in humans, Drosophila, and yeast, indicating that this is a highly conserved response. The examination of histone deacetylase recruitment to chromatin after heat-shock identified SIRT1 as the major deacetylase subsequently enriched at gene-rich regions. Heat-induced SIRT1 recruitment was antagonized by chromatin remodeler SMARCAD1 depletion and, like hyperthermia, the depletion of the SMARCAD1 or combination of the two impaired DNA end resection and increased replication stress. Altered repair protein recruitment was associated with heat-shock-induced γ-H2AX chromatin changes and DSB repair processing. These results support a novel mechanism whereby hyperthermia impacts chromatin organization owing to H4K16ac deacetylation, negatively affecting the HR-dependent DSB repair. H4K16ac deacetylation during hyperthermia is conserved in human, Drosophila, and yeast Dynamic regulation of the chromatin functions during hyperthermia is SIRT1-dependent SIRT1 function is negatively impacted by SMARCAD1 Hyperthermia increases replication stress and impacts DNA resection, impairing DSB repair
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Affiliation(s)
- Sharmistha Chakraborty
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA
- Department of Radiation Oncology, University of Texas Southwestern Medical Centre, Dallas, TX, USA
| | - Mayank Singh
- Department of Radiation Oncology, University of Texas Southwestern Medical Centre, Dallas, TX, USA
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Raj K. Pandita
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA
- Department of Radiation Oncology, University of Texas Southwestern Medical Centre, Dallas, TX, USA
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
- Departments of Radiation Oncology, Washington University, St Louis, MO, USA
| | - Vipin Singh
- Biophysics & Structural Genomics Division Saha Institute of Nuclear Physics, Bidhan Nagar, Kolkata, West Bengal 700064, India
- Homi Bhaba National Institute, Mumbai, India
| | - Calvin S.C. Lo
- Department of Molecular Genetics, Erasmus MC Cancer Institute, Erasmus University Medical Center, 3000 Rotterdam, CA, the Netherlands
| | - Fransisca Leonard
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Nobuo Horikoshi
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA
- Department of Radiation Oncology, University of Texas Southwestern Medical Centre, Dallas, TX, USA
- Departments of Radiation Oncology, Washington University, St Louis, MO, USA
| | - Eduardo G. Moros
- Departments of Radiation Oncology, Washington University, St Louis, MO, USA
- Departments of Radiation Oncology, Moffitt Cancer Center, Tampa, FL 33612, USA
| | - Deblina Guha
- Biophysics & Structural Genomics Division Saha Institute of Nuclear Physics, Bidhan Nagar, Kolkata, West Bengal 700064, India
| | - Clayton R. Hunt
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA
- Department of Radiation Oncology, University of Texas Southwestern Medical Centre, Dallas, TX, USA
- Departments of Radiation Oncology, Washington University, St Louis, MO, USA
| | - Eric Chau
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Kazi M. Ahmed
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Prayas Sethi
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Vijaya Charaka
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Biana Godin
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Kalpana Makhijani
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA
| | - Harry Scherthan
- Bundeswehr Institute of Radiobiology Affiliated to the University of Ulm, Neuherbergstr. 11, 80937 Munich, Germany
| | - Jeanette Deck
- Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
| | - Michael Hausmann
- Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
| | - Arjamand Mushtaq
- Department of Biotechnology, University of Kashmir, Srinagar, Jammu and Kashmir 190006, India
| | - Mohammad Altaf
- Department of Biotechnology, University of Kashmir, Srinagar, Jammu and Kashmir 190006, India
| | - Kenneth S. Ramos
- Center for Genomics and Precision Medicine, Texas A&M College of Medicine, Houston, TX, USA
| | - Krishna M. Bhat
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA
| | - Nitika Taneja
- Department of Molecular Genetics, Erasmus MC Cancer Institute, Erasmus University Medical Center, 3000 Rotterdam, CA, the Netherlands
| | - Chandrima Das
- Biophysics & Structural Genomics Division Saha Institute of Nuclear Physics, Bidhan Nagar, Kolkata, West Bengal 700064, India
- Homi Bhaba National Institute, Mumbai, India
- Corresponding author
| | - Tej K. Pandita
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA
- Department of Radiation Oncology, University of Texas Southwestern Medical Centre, Dallas, TX, USA
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
- Departments of Radiation Oncology, Washington University, St Louis, MO, USA
- Center for Genomics and Precision Medicine, Texas A&M College of Medicine, Houston, TX, USA
- Corresponding author
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12
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Shvedunova M, Akhtar A. Modulation of cellular processes by histone and non-histone protein acetylation. Nat Rev Mol Cell Biol 2022; 23:329-349. [PMID: 35042977 DOI: 10.1038/s41580-021-00441-y] [Citation(s) in RCA: 220] [Impact Index Per Article: 110.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/25/2021] [Indexed: 12/12/2022]
Abstract
Lysine acetylation is a widespread and versatile protein post-translational modification. Lysine acetyltransferases and lysine deacetylases catalyse the addition or removal, respectively, of acetyl groups at both histone and non-histone targets. In this Review, we discuss several features of acetylation and deacetylation, including their diversity of targets, rapid turnover, exquisite sensitivity to the concentrations of the cofactors acetyl-CoA, acyl-CoA and NAD+, and tight interplay with metabolism. Histone acetylation and non-histone protein acetylation influence a myriad of cellular and physiological processes, including transcription, phase separation, autophagy, mitosis, differentiation and neural function. The activity of lysine acetyltransferases and lysine deacetylases can, in turn, be regulated by metabolic states, diet and specific small molecules. Histone acetylation has also recently been shown to mediate cellular memory. These features enable acetylation to integrate the cellular state with transcriptional output and cell-fate decisions.
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Affiliation(s)
- Maria Shvedunova
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany
| | - Asifa Akhtar
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany.
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13
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Bakhshandeh A, Ardestani F, Ghorbani HR, Darvish Ganji M. Structural and molecular properties of complexes of biomolecules and metal-organic frameworks: dispersion-corrected DFT treatment. J Mol Model 2022; 28:32. [PMID: 35018501 DOI: 10.1007/s00894-021-04947-2] [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: 06/11/2021] [Accepted: 10/13/2021] [Indexed: 11/27/2022]
Abstract
Investigation of complexes of nanostructured materials and biomolecules has attracted much attention by various researchers as it can contribute to coherent growth and extended application of nanostructures in different technologies. In this research, following a comprehensive approach, we examined the interaction between different amino acids and metal-organic frameworks (MOFs) at atomic scale using computational chemistry. For this purpose, we employed the density functional theory (DFT-D2) calculations to afford a molecular description of the interaction properties of the amino acids and MOF-5 by examining the interaction energy and the electronic structure of the amino acid/MOF complexes. We found strong interactions between the amino acids and MOF through their polar groups as well as aromatic rings in the gas phase. However, our findings were significantly different in solvent media, where water molecules prevent the amino acids from approaching the active sites of MOF, causing weak attractions between them. The evaluation of nature of interaction between the amino acids and MOF by the atoms-in-molecules (AIM) theory shows that the electrostatic attractions are the main force contributing to bond formation between the interacting entities. Furthermore, our DFT-PBE model of theory was validated against the comprehensive MP2 quantum level of theory.
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Affiliation(s)
- Anahita Bakhshandeh
- Department of Chemical Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
| | - Fatemeh Ardestani
- Department of Chemical Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran.
| | - Hamid Reza Ghorbani
- Department of Chemical Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
| | - Masoud Darvish Ganji
- Department of Nanochemistry, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran.
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14
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Guo X, Cui C, Song J, He Q, Zang N, Hu H, Wang X, Li D, Wang C, Hou X, Li X, Liang K, Yan F, Chen L. Mof acetyltransferase inhibition ameliorates glucose intolerance and islet dysfunction of type 2 diabetes via targeting pancreatic α-cells. Mol Cell Endocrinol 2021; 537:111425. [PMID: 34391847 DOI: 10.1016/j.mce.2021.111425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 01/04/2023]
Abstract
BACKGROUND Previously, we reported that Mof was highly expressed in α-cells, and its knockdown led to ameliorated fasting blood glucose (FBG) and glucose tolerance in non-diabetic mice, attributed by reduced total α-cell but enhanced prohormone convertase (PC)1/3-positive α-cell mass. However, how Mof and histone 4 lysine 16 acetylation (H4K16ac) control α-cell and whether Mof inhibition improves glucose handling in type 2 diabetes (T2DM) mice remain unknown. METHODS Mof overexpression and chromatin immunoprecipitation sequence (ChIP-seq) based on H4K16ac were applied to determine the effect of Mof on α-cell transcriptional factors and underlying mechanism. Then we administrated mg149 to α-TC1-6 cell line, wild type, db/db and diet-induced obesity (DIO) mice to observe the impact of Mof inhibition in vitro and in vivo. In vitro, western blotting and TUNEL staining were used to examine α-cell apoptosis and function. In vivo, glucose tolerance, hormone levels, islet population, α-cell ratio and the co-staining of glucagon and PC1/3 or PC2 were examined. RESULTS Mof activated α-cell-specific transcriptional network. ChIP-seq results indicated that H4K16ac targeted essential genes regulating α-cell differentiation and function. Mof activity inhibition in vitro caused impaired α-cell function and enhanced apoptosis. In vivo, it contributed to ameliorated glucose intolerance and islet dysfunction, characterized by decreased fasting glucagon and elevated post-challenge insulin levels in T2DM mice. CONCLUSION Mof regulates α-cell differentiation and function via acetylating H4K16ac and H4K16ac binding to Pax6 and Foxa2 promoters. Mof inhibition may be a potential interventional target for T2DM, which led to decreased α-cell ratio but increased PC1/3-positive α-cells.
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Affiliation(s)
- Xinghong Guo
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Chen Cui
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Jia Song
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Qin He
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Nan Zang
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Huiqing Hu
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Xiaojie Wang
- Department of Pharmacology, Basic Medicine School of Shandong University, Jinan, 250012, Shandong, China
| | - Danyang Li
- Department of Rehabilitation, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Chuan Wang
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Xinguo Hou
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Xiangzhi Li
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, Life Science School of Shandong University, Qingdao, 266237, Shandong, China
| | - Kai Liang
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China; Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012, Shandong, China; Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, 250012, Shandong, China; Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, 250012, Shandong, China
| | - Fei Yan
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China; Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012, Shandong, China; Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, 250012, Shandong, China; Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, 250012, Shandong, China.
| | - Li Chen
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China; Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012, Shandong, China; Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, 250012, Shandong, China; Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, 250012, Shandong, China.
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15
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Pessoa Rodrigues C, Chatterjee A, Wiese M, Stehle T, Szymanski W, Shvedunova M, Akhtar A. Histone H4 lysine 16 acetylation controls central carbon metabolism and diet-induced obesity in mice. Nat Commun 2021; 12:6212. [PMID: 34707105 PMCID: PMC8551339 DOI: 10.1038/s41467-021-26277-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 09/21/2021] [Indexed: 12/26/2022] Open
Abstract
Noncommunicable diseases (NCDs) account for over 70% of deaths world-wide. Previous work has linked NCDs such as type 2 diabetes (T2D) to disruption of chromatin regulators. However, the exact molecular origins of these chronic conditions remain elusive. Here, we identify the H4 lysine 16 acetyltransferase MOF as a critical regulator of central carbon metabolism. High-throughput metabolomics unveil a systemic amino acid and carbohydrate imbalance in Mof deficient mice, manifesting in T2D predisposition. Oral glucose tolerance testing (OGTT) reveals defects in glucose assimilation and insulin secretion in these animals. Furthermore, Mof deficient mice are resistant to diet-induced fat gain due to defects in glucose uptake in adipose tissue. MOF-mediated H4K16ac deposition controls expression of the master regulator of glucose metabolism, Pparg and the entire downstream transcriptional network. Glucose uptake and lipid storage can be reconstituted in MOF-depleted adipocytes in vitro by ectopic Glut4 expression, PPARγ agonist thiazolidinedione (TZD) treatment or SIRT1 inhibition. Hence, chronic imbalance in H4K16ac promotes a destabilisation of metabolism triggering the development of a metabolic disorder, and its maintenance provides an unprecedented regulatory epigenetic mechanism controlling diet-induced obesity.
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Affiliation(s)
- Cecilia Pessoa Rodrigues
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, 79108, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Schaenzlestrasse 1, 79104, Freiburg, Germany
- International Max Planck Research School for Molecular and Cellular Biology (IMPRS-MCB), Freiburg, Germany
| | - Aindrila Chatterjee
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, 79108, Freiburg, Germany
- European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Meike Wiese
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, 79108, Freiburg, Germany
| | - Thomas Stehle
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, 79108, Freiburg, Germany
| | - Witold Szymanski
- Proteomics Facility, Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Maria Shvedunova
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, 79108, Freiburg, Germany
| | - Asifa Akhtar
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, 79108, Freiburg, Germany.
- Faculty of Biology, University of Freiburg, Schaenzlestrasse 1, 79104, Freiburg, Germany.
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16
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Severe thrombocytopenia is sufficient for fetal and neonatal intracerebral hemorrhage to occur. Blood 2021; 138:885-897. [PMID: 34189583 DOI: 10.1182/blood.2020010111] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 06/02/2021] [Indexed: 11/20/2022] Open
Abstract
Intracerebral hemorrhage (ICH) has a devastating impact on the neonatal population. Whether thrombocytopenia is sufficient to cause ICH in neonates is still being debated. In this study, we comprehensively investigated the consequences of severe thrombocytopenia on the integrity of the cerebral vasculature by using 2 orthogonal approaches: by studying embryogenesis in the Nfe2-/- mouse line and by using biologics (anti-GP1Bα antibodies) to induce severe thrombocytopenia at defined times during development. By using a mouse model, we acquired data demonstrating that platelets are required throughout fetal development and into neonatal life for maintaining the integrity of the cerebral vasculature to prevent hemorrhage and that the location of cerebral hemorrhage is dependent on when thrombocytopenia occurs during development. Importantly, this study demonstrates that fetal and neonatal thrombocytopenia-associated ICH occurs within regions of the brain which, in humans, could lead to neurologic damage.
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17
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Keep RF, Jones HC, Drewes LR. Brain Barriers and brain fluids research in 2020 and the fluids and barriers of the CNS thematic series on advances in in vitro modeling of the blood-brain barrier and neurovascular unit. Fluids Barriers CNS 2021; 18:24. [PMID: 34020685 PMCID: PMC8138848 DOI: 10.1186/s12987-021-00258-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
This editorial discusses advances in brain barrier and brain fluid research in 2020. Topics include: the cerebral endothelium and the neurovascular unit; the choroid plexus; the meninges; cerebrospinal fluid and the glymphatic system; disease states impacting the brain barriers and brain fluids; drug delivery to the brain. This editorial also highlights the recently completed Fluids Barriers CNS thematic series entitled, Advances in in vitro modeling of the bloodbrain barrier and neurovascular unit. Such in vitro modeling is progressing rapidly.
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Affiliation(s)
- Richard F Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, 48105, USA. .,Department of Neurosurgery, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, R5018 BSRB, MI, 48109-2200, USA.
| | - Hazel C Jones
- Gagle Brook House, Chesterton, Bicester, OX26 1UF, UK
| | - Lester R Drewes
- Department of Biomedical Sciences, University of Minnesota Medical School Duluth, Duluth, MN, 55812, USA
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18
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Miners S, Kehoe PG, Love S. Cognitive impact of COVID-19: looking beyond the short term. Alzheimers Res Ther 2020; 12:170. [PMID: 33380345 PMCID: PMC7772800 DOI: 10.1186/s13195-020-00744-w] [Citation(s) in RCA: 120] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/07/2020] [Indexed: 02/07/2023]
Abstract
COVID-19 is primarily a respiratory disease but up to two thirds of hospitalised patients show evidence of central nervous system (CNS) damage, predominantly ischaemic, in some cases haemorrhagic and occasionally encephalitic. It is unclear how much of the ischaemic damage is mediated by direct or inflammatory effects of virus on the CNS vasculature and how much is secondary to extracranial cardiorespiratory disease. Limited data suggest that the causative SARS-CoV-2 virus may enter the CNS via the nasal mucosa and olfactory fibres, or by haematogenous spread, and is capable of infecting endothelial cells, pericytes and probably neurons. Extracranially, SARS-CoV-2 targets endothelial cells and pericytes, causing endothelial cell dysfunction, vascular leakage and immune activation, sometimes leading to disseminated intravascular coagulation. It remains to be confirmed whether endothelial cells and pericytes in the cerebral vasculature are similarly targeted. Several aspects of COVID-19 are likely to impact on cognition. Cerebral white matter is particularly vulnerable to ischaemic damage in COVID-19 and is also critically important for cognitive function. There is accumulating evidence that cerebral hypoperfusion accelerates amyloid-β (Aβ) accumulation and is linked to tau and TDP-43 pathology, and by inducing phosphorylation of α-synuclein at serine-129, ischaemia may also increase the risk of development of Lewy body disease. Current therapies for COVID-19 are understandably focused on supporting respiratory function, preventing thrombosis and reducing immune activation. Since angiotensin-converting enzyme (ACE)-2 is a receptor for SARS-CoV-2, and ACE inhibitors and angiotensin receptor blockers are predicted to increase ACE-2 expression, it was initially feared that their use might exacerbate COVID-19. Recent meta-analyses have instead suggested that these medications are protective. This is perhaps because SARS-CoV-2 entry may deplete ACE-2, tipping the balance towards angiotensin II-ACE-1-mediated classical RAS activation: exacerbating hypoperfusion and promoting inflammation. It may be relevant that APOE ε4 individuals, who seem to be at increased risk of COVID-19, also have lowest ACE-2 activity. COVID-19 is likely to leave an unexpected legacy of long-term neurological complications in a significant number of survivors. Cognitive follow-up of COVID-19 patients will be important, especially in patients who develop cerebrovascular and neurological complications during the acute illness.
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Affiliation(s)
- Scott Miners
- Dementia Research Group, Bristol Medical School (THS), University of Bristol, Learning & Research level 1, Southmead Hospital, Bristol, BS10 5NB, UK.
| | - Patrick G Kehoe
- Dementia Research Group, Bristol Medical School (THS), University of Bristol, Learning & Research level 1, Southmead Hospital, Bristol, BS10 5NB, UK
| | - Seth Love
- Dementia Research Group, Bristol Medical School (THS), University of Bristol, Learning & Research level 1, Southmead Hospital, Bristol, BS10 5NB, UK.
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19
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Bhattacharya A, Kaushik DK, Lozinski BM, Yong VW. Beyond barrier functions: Roles of pericytes in homeostasis and regulation of neuroinflammation. J Neurosci Res 2020; 98:2390-2405. [PMID: 32815569 DOI: 10.1002/jnr.24715] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/22/2020] [Accepted: 07/28/2020] [Indexed: 12/19/2022]
Abstract
Pericytes are contractile cells that extend along the vasculature to mediate key homeostatic functions of endothelial barriers within the body. In the central nervous system (CNS), pericytes are important contributors to the structure and function of the neurovascular unit, which includes endothelial cells, astrocytes and neurons. The understanding of pericytes has been marred by an inability to accurately distinguish pericytes from other stromal cells with similar expression of identifying markers. Evidence is now growing in favor of pericytes being actively involved in both CNS homeostasis and pathology of neurological diseases, including multiple sclerosis, spinal cord injury, and Alzheimer's disease among others. In this review, we discuss the current understanding on the characterization of pericytes, their roles in maintaining the integrity of the blood-brain barrier, and their contributions to neuroinflammation and neurorepair. Owing to its plethora of surface receptors, pericytes respond to inflammatory mediators such as CCL2 (monocyte chemoattractant protein-1) and tumor necrosis factor-α, in turn secreting CCL2, nitric oxide, and several cytokines. Pericytes can therefore act as promoters of both the innate and adaptive arms of the immune system. Much like professional phagocytes, pericytes also have the ability to clear up cellular debris and macromolecular plaques. Moreover, pericytes promote the activities of CNS glia, including in maturation of oligodendrocyte lineage cells for myelination. Conversely, pericytes can impair regenerative processes by contributing to scar formation. A better characterization of CNS pericytes and their functions would bode well for therapeutics aimed at alleviating their undesirable properties and enhancing their benefits.
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Affiliation(s)
- Anindita Bhattacharya
- Department of Clinical Neurosciences, Hotchkiss Brain institute, University of Calgary, Calgary, AB, Canada
| | - Deepak Kumar Kaushik
- Department of Clinical Neurosciences, Hotchkiss Brain institute, University of Calgary, Calgary, AB, Canada
| | - Brian Mark Lozinski
- Department of Clinical Neurosciences, Hotchkiss Brain institute, University of Calgary, Calgary, AB, Canada
| | - V Wee Yong
- Department of Clinical Neurosciences, Hotchkiss Brain institute, University of Calgary, Calgary, AB, Canada
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Bondareva O, Sheikh BN. Vascular Homeostasis and Inflammation in Health and Disease-Lessons from Single Cell Technologies. Int J Mol Sci 2020; 21:E4688. [PMID: 32630148 PMCID: PMC7369864 DOI: 10.3390/ijms21134688] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 06/23/2020] [Accepted: 06/30/2020] [Indexed: 02/07/2023] Open
Abstract
The vascular system is critical infrastructure that transports oxygen and nutrients around the body, and dynamically adapts its function to an array of environmental changes. To fulfil the demands of diverse organs, each with unique functions and requirements, the vascular system displays vast regional heterogeneity as well as specialized cell types. Our understanding of the heterogeneity of vascular cells and the molecular mechanisms that regulate their function is beginning to benefit greatly from the rapid development of single cell technologies. Recent studies have started to analyze and map vascular beds in a range of organs in healthy and diseased states at single cell resolution. The current review focuses on recent biological insights on the vascular system garnered from single cell analyses. We cover the themes of vascular heterogeneity, phenotypic plasticity of vascular cells in pathologies such as atherosclerosis and cardiovascular disease, as well as the contribution of defective microvasculature to the development of neurodegenerative disorders such as Alzheimer's disease. Further adaptation of single cell technologies to study the vascular system will be pivotal in uncovering the mechanisms that drive the array of diseases underpinned by vascular dysfunction.
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Affiliation(s)
- Olga Bondareva
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, Philipp-Rosenthal-Str. 27, 04103 Leipzig, Germany
| | - Bilal N. Sheikh
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, Philipp-Rosenthal-Str. 27, 04103 Leipzig, Germany
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