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Zaidi MB, Khan F, Jameel F, Khan I, Musharraf SG, Salim A. Temporal and differential proteomic profile of molecular mediators associated with chronic and acute wound healing. Cell Biochem Funct 2024; 42:e3946. [PMID: 38379227 DOI: 10.1002/cbf.3946] [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: 07/13/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 02/22/2024]
Abstract
The underlying pathophysiology of nonhealing chronic wounds is poorly understood due to the changes occurring at the gene level and the complexity arising in their proteomic profile. Here, we elucidated the temporal and differential profile of the normal and diabetic wound-healing mediators along with their interactions and associated pathways. Skin tissues corresponding to normal and diabetic wounds were isolated at Days 0, 3, 6, and 9 representing different healing phases. Temporal gene expression was analyzed by quantitative real-time PCR. Concurrently, differential protein patterns in the wound tissues were identified by Nano LC-ESI-TOF mass spectrometry and later confirmed by Western blot analysis. Gene ontology annotation, protein-protein interaction, and protein pathway analysis were performed using DAVID, PANTHER, and STRING bioinformatics resources. Uniquely identified proteins (complement C3, amyloid beta precursor protein, and cytoplasmic linker associated protein 2) in the diabetic wound tissue implied that these proteins are involved in the pathogenesis of diabetic wound. They exhibit enhanced catalytic activity, trigger pathways linked with inflammation, and negatively regulate wound healing. However, in the normal wound tissue, axin 1, chondroitin sulfate proteoglycan 4, and sphingosine-1-phosphate receptor were identified, which are involved in proliferation, angiogenesis, and remodeling. Our findings demonstrate the correlation between elevated gene expression of tumor necrosis factor-α, interleukin (IL)-1β, and identified mediators: aryl hydrocarbon receptor nuclear translocator, 5'-aminolevulinate synthase 2, and CXC-family, that inflicted an inflammatory response by activating downstream MAPK, JAK-STAT, and NF-κB pathways. Similarly, in normal wound tissue, the upregulated IL-4 and hepatocyte growth factor levels in conjunction with the identified proteins, serine/threonine-protein kinase mTOR and peroxisome proliferator-activated receptor gamma, played a significant role in the cellular response to platelet-derived growth factor stimulus, dermal epithelialization, and cell proliferation, processes associated with the repair mechanism. Furthermore, Western blot analysis indicated elevated levels of inflammatory markers and reduced levels of proliferative and angiogenic factors in the diabetic wound.
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Affiliation(s)
- Midhat Batool Zaidi
- Stem Cell Research Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Faisal Khan
- Mass Spectrometry Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Fatima Jameel
- Stem Cell Research Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Irfan Khan
- Stem Cell Research Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Syed Ghulam Musharraf
- Mass Spectrometry Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Asmat Salim
- Stem Cell Research Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
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HMGB1-RAGE, A Useful Partnership in Vital Response? ARS MEDICA TOMITANA 2021. [DOI: 10.2478/arsm-2021-0018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Abstract
Introduction: In forensic practice, it is well known that the mechanism and dating of traumatic injuries is one of the primary responsibilities of this specialty. Currently, it is a subject still debated by researchers, and so far, an infallible marker that would objectively support their intravitam/postmortem occurrence has not yet been identified. However, studies have shown that the HMGB1-RAGE axis is rapidly activated after trauma and might be an essential element to help solve the forensic problem of wound dating.
Purpose: To compare the values of HMGB1-RAGE expression occurring in wounds produced intravitally shortly before death and in wounds produced postmortem and to quantify the differences arising between them.
Material and method: For this prospective study, skin fragments were collected from the site of wounds in autopsied cadavers at the County Clinical Service of Forensic Medicine Constanta (SCJML Constanta), wounds produced intravitally and with a maximum survival time of 60 minutes. Postmortem wounds and control fragments from volunteers undergoing surgery for skin tumours were also collected. The main conditions were: chronological documentation of the lesion and absence of neoplastic or inflammatory conditions. Ninety-six autopsy cases between 2021–2022 met the criteria for inclusion in the study. A control fragment accompanied each fragment from the wound. Routine Hematoxylin-Eosin (HE), Perls and Van Gieson Werhoeffstaining, as well as immunohistochemistry with HMGB1 and RAGE markers were performed on each fragment and a score based on staining intensity was determined.
Results: Routine staining was not useful in assessing vitality in segments with survival time up to 30 min. Immunohistochemically, both markers showed increased values compared to control values (p<0.0001) and to lesions produced postmortem. An interesting aspect is the lack of reactivity in the lesion’s margins for both markers.
Conclusions: Although further research is needed, the results of our study support the hypothesis that the HMGB1-RAGE axis is useful in assessing the vital reaction in skin wounds.
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Zhang J, Hua XF, Gu J, Chen F, Gu J, Gong CX, Liu F, Dai CL. High Mobility Group Box 1 Ameliorates Cognitive Impairment in the 3×Tg-AD Mouse Model. J Alzheimers Dis 2021; 74:851-864. [PMID: 32116254 DOI: 10.3233/jad-191110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common cause of dementia. Studies indicate that neuroinflammation plays an important role in the pathophysiology of AD. High-mobility group box 1 (HMGB1) is an important chromatin protein. It can be secreted by immune cells and passively released from damaged cells to promote inflammation. HMGB1 also can recruit stem cells and promote their proliferation and tissue repairing. However, the role of HMGB1 in the progression of AD is currently unknown. OBJECTIVE The aims were to investigate the effect of HMGB1 on the AD-related pathologies and cognitive function using 3×Tg-AD mouse model. METHODS Female 5-month-old 3×Tg-AD mice were intracerebroventricularly injected with 4.5 μg of HMGB1 or with saline as a control. The levels of interesting protein were assessed by western blots or immunofluorescence. The effect of HMGB1 on the cognitive function was evaluated by one-trial novel object recognition test and Morris water maze. RESULTS Intracerebroventricular injection of recombinant HMGB1 ameliorated cognitive impairment in 5-6-month-old 3×Tg-AD mice. The levels of synapsin 1, synaptophysin, MAP2, NeuN, and phosphorylated CREB were increased in HMGB1-treated 3×Tg-AD mouse brains. HMGB1 decreased intracellular amyloid-β level but did not affect tau phosphorylation. HMGB1 treatment also promoted neurogenesis in the dentate gyrus and increased the level of GFAP in the 3×Tg-AD mouse brains. CONCLUSION These results reveal a novel function of HMGB1 in enhancing neuroplasticity and improving cognitive function in 3×Tg-AD mice.
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Affiliation(s)
- Jin Zhang
- Department of Rehabilitation, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China.,Department of Neurochemistry, Inge Grundke-Iqbal Research Floor, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA
| | - Xue-Feng Hua
- Department of Rehabilitation, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Jinhua Gu
- Department of Neurochemistry, Inge Grundke-Iqbal Research Floor, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA
| | - Feng Chen
- Department of Neurochemistry, Inge Grundke-Iqbal Research Floor, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA
| | - Jianlan Gu
- Department of Neurochemistry, Inge Grundke-Iqbal Research Floor, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA
| | - Cheng-Xin Gong
- Department of Neurochemistry, Inge Grundke-Iqbal Research Floor, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA
| | - Fei Liu
- Department of Neurochemistry, Inge Grundke-Iqbal Research Floor, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA
| | - Chun-Ling Dai
- Department of Neurochemistry, Inge Grundke-Iqbal Research Floor, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA
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Xiong L, Sun L, Zhang Y, Peng J, Yan J, Liu X. Exosomes from Bone Marrow Mesenchymal Stem Cells Can Alleviate Early Brain Injury After Subarachnoid Hemorrhage Through miRNA129-5p-HMGB1 Pathway. Stem Cells Dev 2020; 29:212-221. [PMID: 31801411 DOI: 10.1089/scd.2019.0206] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Lili Xiong
- Institute of Biomedical Engineering, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, China
| | - Linlin Sun
- Department of Anatomy and Histology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Yixuan Zhang
- Department of Anatomy and Histology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Jin Peng
- Department of Histology and Embryology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, China
| | - Junhao Yan
- Department of Anatomy and Histology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Xiaoheng Liu
- Institute of Biomedical Engineering, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, China
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Li P, Jie Y, YuGen S, Yu W, Yan S. High mobility group box-1 in hypothalamic paraventricular nuclei attenuates sympathetic tone in rats at post-myocardial infarction. Cardiol J 2018; 26:555-563. [PMID: 30338842 DOI: 10.5603/cj.a2018.0117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 08/25/2018] [Accepted: 09/24/2018] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Inflammation is associated with increased sympathetic drive in cardiovascular diseases. The paraventricular nucleus (PVN) of the hypothalamus is a key regulator of sympathetic nerve activity at post-myocardial infarction (MI). High mobility group box-1 (HMGB1) exhibits inflammatory cytokine like activity in the extracellular space. Inflammation is associated with increased sympathetic drive in cardiovscular diseases. However, the role of HMGB1 in sympathetic nerve activity at post-MI remains unknown. The aim of the present study is to determine the role and mechanism of HMGB1 in the PVN, in terms of sympathetic activity and arrhythmia after MI. METHODS Sprague-Dawley rats underwent left anterior descending coronary artery ligation to induce MI. Anti-HMGB1 polyclonal antibody or control IgG was bilaterally microinjected into the PVN (5 μL every second day for seven consecutive days). Then, renal sympathetic nerve activity (RSNA) was recorded. The association between ventricular arrhythmias (VAs) and MI was evaluated using programmed electrophysiological stimulation. After performing electrophysiological experiments in vivo, immunohistochemistry was used to detect the distribution of HMGB1, while Western blot was used to detect the expression of HMGB1 and p-ERK in the PVN of MI rats. RESULTS HMGB1 and p-ERK were upregulated in the PVN in rats at post-MI. Moreover, bilateral PVN microinjection of anti-HMGB1 polyclonal antibody reversed the expression of HMGB1 and p-ERK, and consequently decreased the baseline RSNA and inducible VAs, when compared to those in sham rats. CONCLUSIONS These results suggest that MI causes the translocation of HMGB1 in the PVN, which leads to sympathetic overactivation through the ERK1/2 signaling pathway. The bilateral PVN microinjection of anti-HMGB1 antibody can be an effective therapy for MI-induced arrhythmia.
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Affiliation(s)
- Pang Li
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China.
| | - Yin Jie
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Shi YuGen
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Wang Yu
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Suhua Yan
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
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miR-193a inhibits osteogenic differentiation of bone marrow-derived stroma cell via targeting HMGB1. Biochem Biophys Res Commun 2018; 503:536-543. [PMID: 29787753 DOI: 10.1016/j.bbrc.2018.05.132] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 05/18/2018] [Indexed: 11/20/2022]
Abstract
BACKGROUND miR-193a has been shown to be involved in a variety of biological processes, including cell proliferation, differentiation, and apoptosis. However, little is known about how miR-193a regulates osteogenic differentiation. METHODS We employed RT-qPCR to determine the level of miR-193a and mRNA level of HMGB1 and osteoblast-specific markers (Runx2, ALP, OSX, OCN). Besides, westernblot was used to probe protein level of phosphorylated MAPK family members and β-catenin. Bioinformatic analysis was used to predict the putative binding sequence of miR-193a to the 3'-UTR of HMGB1 and we confirmed this result by dual luciferase reporter assay. Alizarin red staining assay (ARS) and alkaline phosphatase activity (ALP) were performed to detect osteogenic differentiation. RESULTS miR-193a was downregulated in OM (osteogenic medium)induced hBMSC. More interestingly, we found that miR-193a mimic attenuated matrix mineralization and alkaline phosphatase activity, whereas miR-193a inhibitor exerted the opposite phenotypes. Mechanistically, we observed that miR-193a played an inhibitory role in expression of osteoblast-specific markers and activation of MAPK and Wnt signaling pathways. Bioinformatic analysis and dual luciferase assay demonstrated that miR-193a directly targeted 3'-UTR of HMGB1. Furthermore, we overexpressed HMGB1 in miR-193a overexpressed hBMSC to establish that HMGB1 acted as downstream target of miR-193a-inhibited osteogenic differentiation. CONCLUSIONS Here, we reveal miR-193a plays a suppressive role in osteogenic differentiation of hBMSC via targeting HMGB1. These findings provide a novel mechanism underlying osteogenic differentiation and offer therapeutical strategy for bone formation.
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High-Mobility Group Box 1 Mediates Fibroblast Activity via RAGE-MAPK and NF-κB Signaling in Keloid Scar Formation. Int J Mol Sci 2017; 19:ijms19010076. [PMID: 29283384 PMCID: PMC5796026 DOI: 10.3390/ijms19010076] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 12/22/2017] [Accepted: 12/22/2017] [Indexed: 12/12/2022] Open
Abstract
Emerging studies have revealed the involvement of high-mobility group box 1 (HMGB1) in systemic fibrotic diseases, yet its role in the cutaneous scarring process has not yet been investigated. We hypothesized that HMGB1 may promote fibroblast activity to cause abnormal cutaneous scarring. In vitro wound healing assay with normal and keloid fibroblasts demonstrated that HMGB1 administration promoted the migration of both fibroblasts with increased speed and a greater traveling distance. Treatment of the HMGB1 inhibitor glycyrrhizic acid (GA) showed an opposing effect on both activities. To analyze the downstream mechanism, the protein levels of extracellular signal-regulated kinase (ERK) 1/2, protein kinase B (AKT), and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) were measured by western blot analysis. HMGB1 increased the expression levels of ERK1/2, AKT, and NF-κB compared to the control, which was suppressed by GA. HMGB1 promoted both normal and keloid fibroblasts migration to a degree equivalent to that achieved with TGF-β. We concluded that HMGB1 activates fibroblasts via the receptor for advanced glycation end product (RAGE)—mitogen-activated protein kinases (MAPK) and NF-κB interaction signaling pathways. Further knowledge of the relationship of HMGB1 with skin fibrosis may lead to a promising clinical approach to manage abnormal scarring.
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Liu AH, Wu YT, Wang YP. MicroRNA-129-5p inhibits the development of autoimmune encephalomyelitis-related epilepsy by targeting HMGB1 through the TLR4/NF-kB signaling pathway. Brain Res Bull 2017; 132:139-149. [PMID: 28528202 DOI: 10.1016/j.brainresbull.2017.05.004] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Revised: 05/05/2017] [Accepted: 05/10/2017] [Indexed: 12/22/2022]
Abstract
The study aimed to explore the effects of microRNA-129-5p (miR-129-5p) on the development of autoimmune encephalomyelitis (AE)-related epilepsy by targeting HMGB1 through the TLR4/NF-kB signaling pathway in a rat model. AE-related epilepsy models were established. Sprague-Dawley (SD) rats were randomly divided into control, model, miR-129-5p mimics, miR-129-5p inhibitor, HMGB1 shRNA, TLR4/NF-kB (TLR4/NF-kB signaling pathway was inhibited) and miR-129-5p mimics+HMGB1 shRNA groups respectively. Latency to a first epilepsy seizure attack was recorded. Neuronal injuries in the hippocampus regions were detected using HE, Nissl and FJB staining methods 24h following model establishment. Microglial cells were detected by OX-42 immunohistochemistry. Expressions of miR-129-5p, HMGB1 and TLR4/NF-kB signaling pathway-related proteins were detected by qRT-PCR. Protein expressions of HMGB1 and TLR4/NF-kB signaling pathway-related proteins were detected by Western blotting. Dual luciferase reporter gene assay showed that miR-129-5p was negatively targeting HMGB1. Neurons of hippocampal tissues in rats were heavily injured by an injection of lithium chloride. Compared with the model and control groups, neuronal injury of the hippocampus and AE-related epilepsy decreased and microglial cells increased in the miR-129-5p mimics, HMGB1 shRNA and TLR4/NF-kB groups; however, in the miR-129-5p inhibitor group, miR-129-5p expression decreased, HMGB1 expression increased, TLR4/NF-kB signaling pathway was activated, latency to a first epilepsy seizure attack was shortened, and neuronal injury increased. This study provides evidence that miR-129-5p inhibits the development of AE-related epilepsy by suppressing HMGB1 expression and inhibiting TLR4/NF-kB signaling pathway.
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Affiliation(s)
- Ai-Hua Liu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing 100053, PR China
| | - Ya-Ting Wu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing 100053, PR China
| | - Yu-Ping Wang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing 100053, PR China.
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Martinotti S, Patrone M, Manfredi M, Gosetti F, Pedrazzi M, Marengo E, Ranzato E. HMGB1 Osteo-Modulatory Action on Osteosarcoma SaOS-2 Cell Line: An Integrated Study From Biochemical and -Omics Approaches. J Cell Biochem 2016; 117:2559-69. [PMID: 27012556 DOI: 10.1002/jcb.25549] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 03/22/2016] [Indexed: 01/10/2023]
Abstract
High mobility group box protein-1 (HMGB1) is released from cells under various pathological conditions and it plays a pivotal role as an alarmin signaling tissue damage. Little is known about the impact of HMGB1 in bone repair and remodeling. To this aim, we focused on HMGB1-induced effects on the in vitro osteoblast model SaOS-2. Cell proliferation was stimulated with a maximum at concentration of 2.5 nM, and such a dose also stimulated cell migration and scratch wound healing. We then characterized the modulatory effect of HMGB1 on bone biology, by using osteogenesis/mineralization assays, a PCR array, and the analysis of a series of osteogenic markers. We performed also a proteomic screening using SWATH-MS on SaOS-2 cell exposed to HMGB1 and we provide evidence for proteins modulated in HMGB1 exposed cells. Taken together, our data demonstrate that SaOS-2 cell proliferation, migration, and osteogenic differentiation were increased by HMGB1. We, therefore, propose that HMGB1 could be a potent bone-remodeling signal but the physiological meaning of this property remains to be more ascertained. J. Cell. Biochem. 117: 2559-2569, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Simona Martinotti
- DiSIT-Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy.
| | - Mauro Patrone
- DiSIT-Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Marcello Manfredi
- DiSIT-Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy.,Isalit srl, sede legale-via Bovio, 6, Novara; sede operativa-Politecnico di Torino, sede di Alessandria, viale Teresa Michel 5, Alessandria 15121, Italy
| | - Fabio Gosetti
- DiSIT-Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Marco Pedrazzi
- Department of Experimental Medicine (DIMES)-Biochemistry Section, University of Genova, Viale Benedetto XV 1, Genova 16132, Italy
| | - Emilio Marengo
- DiSIT-Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Elia Ranzato
- DiSIT-Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
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Panneerselvam S, Durai P, Yesudhas D, Achek A, Kwon HK, Choi S. Cysteine redox state plays a key role in the inter-domain movements of HMGB1: a molecular dynamics simulation study. RSC Adv 2016. [DOI: 10.1039/c6ra16343b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
We have modelled and simulated different states of HMGB1, suggesting that the fully reduced HMGB1 maintains the inter-domain movements during the activity.
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Affiliation(s)
| | | | - Dhanusha Yesudhas
- Department of Molecular Science and Technology
- Ajou University
- Suwon 443-749
- Korea
| | - Asma Achek
- Department of Molecular Science and Technology
- Ajou University
- Suwon 443-749
- Korea
| | - Hyuk-Kwon Kwon
- Department of Molecular Science and Technology
- Ajou University
- Suwon 443-749
- Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology
- Ajou University
- Suwon 443-749
- Korea
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Reeves R. High mobility group (HMG) proteins: Modulators of chromatin structure and DNA repair in mammalian cells. DNA Repair (Amst) 2015; 36:122-136. [PMID: 26411874 DOI: 10.1016/j.dnarep.2015.09.015] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
It has been almost a decade since the last review appeared comparing and contrasting the influences that the different families of High Mobility Group proteins (HMGA, HMGB and HMGN) have on the various DNA repair pathways in mammalian cells. During that time considerable progress has been made in our understanding of how these non-histone proteins modulate the efficiency of DNA repair by all of the major cellular pathways: nucleotide excision repair, base excision repair, double-stand break repair and mismatch repair. Although there are often similar and over-lapping biological activities shared by all HMG proteins, members of each of the different families appear to have a somewhat 'individualistic' impact on various DNA repair pathways. This review will focus on what is currently known about the roles that different HMG proteins play in DNA repair processes and discuss possible future research areas in this rapidly evolving field.
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Affiliation(s)
- Raymond Reeves
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-4660, USA.
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12
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Lee DE, Trowbridge RM, Ayoub NT, Agrawal DK. High-mobility Group Box Protein-1, Matrix Metalloproteinases, and Vitamin D in Keloids and Hypertrophic Scars. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2015; 3:e425. [PMID: 26180726 PMCID: PMC4494495 DOI: 10.1097/gox.0000000000000391] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 04/23/2015] [Indexed: 01/16/2023]
Abstract
Keloids and hypertrophic scars represent excessive wound healing involving high production of collagen by skin fibroblasts. This review focuses on the role of high-mobility group box protein-1 (HMGB-1), matrix metalloproteinases (MMPs), and vitamin D in these conditions. Although the role of HMGB-1 in keloids and hypertrophic scars is unclear, the effect of HMGB-1 on fibroblasts suggests a profibrotic role and a potential contribution to excessive scarring. MMPs contribute extensively to wound healing and characteristically degrade the extracellular matrix. MMP-1 is decreased in keloids and hypertrophic scars. However, other MMPs, including MMP-2, have been found to be increased and are thought to possibly contribute to keloid expansion through peripheral extracellular matrix catabolism. Many novel therapeutic approaches to keloids and hypertrophic scars target MMPs and aim to increase their levels and catabolic activity. The higher prevalence of keloids in darker skin types may partially be due to a tendency for lower vitamin D levels. The physiologically active form of vitamin D, 1,25(OH)2D3, inhibits the proliferation of keloid fibroblasts, and correlations between vitamin D receptor polymorphisms, such as the TaqI CC genotype, and keloid formation have been reported. Additionally, vitamin D may exert an antifibrotic effect partially mediated by MMPs. Here, we critically discuss whether keloid and hypertrophic scar formation could be predicted based on vitamin D status and vitamin D receptor polymorphisms. Specifically, the findings identified HMGB-1, MMPs, and vitamin D as potential avenues for further clinical investigation and potentially novel therapeutic approaches to prevent the development of keloids and hypertrophic scars.
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Affiliation(s)
- Dylan E. Lee
- From the Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Neb.; Brigham and Women’s Hospital, Boston, Mass.; and Westfield Plastic Surgery Center, Omaha, Neb
| | - Ryan M. Trowbridge
- From the Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Neb.; Brigham and Women’s Hospital, Boston, Mass.; and Westfield Plastic Surgery Center, Omaha, Neb
| | - Nagi T. Ayoub
- From the Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Neb.; Brigham and Women’s Hospital, Boston, Mass.; and Westfield Plastic Surgery Center, Omaha, Neb
| | - Devendra K. Agrawal
- From the Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Neb.; Brigham and Women’s Hospital, Boston, Mass.; and Westfield Plastic Surgery Center, Omaha, Neb
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13
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Martinotti S, Patrone M, Ranzato E. Emerging roles for HMGB1 protein in immunity, inflammation, and cancer. Immunotargets Ther 2015; 4:101-9. [PMID: 27471716 PMCID: PMC4918250 DOI: 10.2147/itt.s58064] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
High-mobility group box 1 (HMGB1) protein is a member of the highly conserved non-histone DNA binding protein family. First identified in 1973, as one of a group of chromatin-associated proteins with high acidic and basic amino acid content, it was so named for its characteristic rapid mobility in polyacrylamide gel electrophoresis. HMGB1 was later discovered to have another function. It is released from a variety of cells into the extracellular milieu to act on specific cell-surface receptors. In this latter role, HMGB1 is a proinflammatory cytokine that may contribute to many inflammatory diseases, including sepsis. Therefore, HMGB1 regulates intracellular cascades influencing immune cell functions, including chemotaxis and immune modulation. The bioactivity of the HMGB1 is determined by specific posttranslational modifications that regulate its role in inflammation and immunity. During tumor development, HMGB1 has been reported to play paradoxical roles in promoting both cell survival and death by regulating multiple signaling pathways. In this review, we focus on the role of HMGB1 in physiological and pathological responses, as well as the mechanisms by which it contributes to immunity, inflammation, and cancer progression.
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Affiliation(s)
- Simona Martinotti
- DiSIT - Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, Alessandria, Italy
| | - Mauro Patrone
- DiSIT - Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, Alessandria, Italy
| | - Elia Ranzato
- DiSIT - Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, Alessandria, Italy
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Kozai TDY, Li X, Bodily LM, Caparosa EM, Zenonos GA, Carlisle DL, Friedlander RM, Cui XT. Effects of caspase-1 knockout on chronic neural recording quality and longevity: insight into cellular and molecular mechanisms of the reactive tissue response. Biomaterials 2014; 35:9620-34. [PMID: 25176060 DOI: 10.1016/j.biomaterials.2014.08.006] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 08/01/2014] [Indexed: 12/17/2022]
Abstract
Chronic implantation of microelectrodes into the cortex has been shown to lead to inflammatory gliosis and neuronal loss in the microenvironment immediately surrounding the probe, a hypothesized cause of neural recording failure. Caspase-1 (aka Interleukin 1β converting enzyme) is known to play a key role in both inflammation and programmed cell death, particularly in stroke and neurodegenerative diseases. Caspase-1 knockout (KO) mice are resistant to apoptosis and these mice have preserved neurologic function by reducing ischemia-induced brain injury in stroke models. Local ischemic injury can occur following neural probe insertion and thus in this study we investigated the hypothesis that caspase-1 KO mice would have less ischemic injury surrounding the neural probe. In this study, caspase-1 KO mice were implanted with chronic single shank 3 mm Michigan probes into V1m cortex. Electrophysiology recording showed significantly improved single-unit recording performance (yield and signal to noise ratio) of caspase-1 KO mice compared to wild type C57B6 (WT) mice over the course of up to 6 months for the majority of the depth. The higher yield is supported by the improved neuronal survival in the caspase-1 KO mice. Impedance fluctuates over time but appears to be steadier in the caspase-1 KO especially at longer time points, suggesting milder glia scarring. These findings show that caspase-1 is a promising target for pharmacologic interventions.
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Affiliation(s)
- Takashi D Y Kozai
- Bioengineering, University of Pittsburgh, USA; Center for Neural Basis of Cognition, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, USA.
| | - Xia Li
- Bioengineering, University of Pittsburgh, USA
| | - Lance M Bodily
- Neuroapoptosis Laboratory, Department of Neurological Surgery, University of Pittsburgh, USA
| | - Ellen M Caparosa
- Neuroapoptosis Laboratory, Department of Neurological Surgery, University of Pittsburgh, USA
| | - Georgios A Zenonos
- Neuroapoptosis Laboratory, Department of Neurological Surgery, University of Pittsburgh, USA
| | - Diane L Carlisle
- Neuroapoptosis Laboratory, Department of Neurological Surgery, University of Pittsburgh, USA
| | - Robert M Friedlander
- Neuroapoptosis Laboratory, Department of Neurological Surgery, University of Pittsburgh, USA
| | - X Tracy Cui
- Bioengineering, University of Pittsburgh, USA; Center for Neural Basis of Cognition, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, USA.
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Ranzato E, Martinotti S, Burlando B. Honey exposure stimulates wound repair of human dermal fibroblasts. BURNS & TRAUMA 2013; 1:32-8. [PMID: 27574620 PMCID: PMC4994496 DOI: 10.4103/2321-3868.113333] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 03/01/2013] [Indexed: 11/04/2022]
Abstract
Honey is widely used for treating burns, ulcers and wounds, but the mechanisms of action are poorly known and the product is mainly used as an antimicrobial. We have examined here the wound healing properties of honey on human fibroblasts, using an in vitro scratch wound healing model. Three kinds of widely used monofloral honeys were used, viz. acacia (Robinia pseudacacia), buckwheat (Fagopyrum sp.), and manuka (Leptospermum scoparium). Data displayed an increased wound healing activity in fibroblasts, but with different efficiency and mechanisms of action among honeys. The effects of acacia and buckwheat emerged in both scratch wound and chemotaxis assays, while the effect of manuka was significant but lower. The use of inhibitors indicated on the whole an essential role of cytosolic calcium, an important role of ERK and p38, and a secondary role of PI3K. Acacia and buckwheat, but not manuka, induced significant increases in the release of interleukin-4 (IL-4), IL-6, and IL-8, indicating a correlation between interleukin upregulation and wound closure efficiency. This is consistent with our previous findings suggesting a higher ability of acacia and buckwheat to activate keratinocyte reepithelialization, with respect to manuka honey. In conclusion, our data indicate that acacia and buckwheat honeys are particularly efficient in facilitating fibroblast wound closure activities, suggesting new therapeutic possibilities for this natural product.
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Affiliation(s)
- Elia Ranzato
- Dipartimento di Scienze e Innovazione Tecnologica, DiSIT, University of Piemonte Orientale "Amedeo Avogadro", viale T. Michel 11, 15121 Alessandria, Italy
| | - Simona Martinotti
- Dipartimento di Scienze e Innovazione Tecnologica, DiSIT, University of Piemonte Orientale "Amedeo Avogadro", viale T. Michel 11, 15121 Alessandria, Italy
| | - Bruno Burlando
- Dipartimento di Scienze e Innovazione Tecnologica, DiSIT, University of Piemonte Orientale "Amedeo Avogadro", viale T. Michel 11, 15121 Alessandria, Italy
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