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Han JY, Rhee WJ, Shin JS. Cytoplasmic HMGB1 promotes the activation of JAK2-STAT3 signaling and PD-L1 expression in breast cancer. Mol Med 2025; 31:197. [PMID: 40389855 PMCID: PMC12090602 DOI: 10.1186/s10020-025-01235-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2024] [Accepted: 04/28/2025] [Indexed: 05/21/2025] Open
Abstract
BACKGROUND High-mobility group box 1 (HMGB1) plays various roles depending on its subcellular localization. Extracellular HMGB1 interacts with receptors, such as toll-like receptor 4 and receptor for advanced glycation end products (RAGE), promoting cell proliferation, survival, and migration in cancer cells. It also increases the expression of programmed death-ligand 1 (PD-L1) in cancer cells by binding to RAGE. However, the effect of intracellular HMGB1 on the regulation of immune checkpoints such as PD-L1 has not been well characterized. In this study, we aimed to investigate the effects of intracellular HMGB1 on PD-L1 expression in breast cancer cells. METHODS Human and mouse triple-negative breast cancer cells, MDA-MB-231 and 4T1, along with HMGB1-deficient mouse embryonic fibroblast cells, were cultured. HMGB1 overexpression was achieved using a Myc-tagged plasmid, while siHMGB1 constructs were used for gene silencing. Quantitative reverse-transcriptase PCR and western blot analysis were performed to assess gene and protein expressions. Confocal imaging, immunoprecipitation, and proximity ligation assays were used to investigate HMGB1 localization and Janus kinase 2 (JAK2)-signal transducer and activator of transcription 3 (STAT3) interactions. In vivo experiments were performed using tumor-bearing mice treated with STAT3 and HMGB1 inhibitors. Statistical analyses were performed using Student's t-tests, one-way analysis of variance, Pearson's correlation, and Kaplan-Meier survival analysis, with significance set at p < 0.05. RESULTS In breast cancer cells, HMGB1 translocation from the nucleus to the cytoplasm increased the JAK2-STAT3 interaction and induced STAT3 phosphorylation, leading to increased STAT3 target signaling, including the epithelial-mesenchymal transition (EMT) phenotype and PD-L1 expression. Inhibition of nucleo-cytoplasmic translocation of HMGB1 decreased STAT3 phosphorylation and PD-L1 expression. Furthermore, HMGB1 enhanced breast cancer cell migration, invasion, and EMT, contributing to tumor growth in an in vivo mouse model that were mitigated by the HMGB1-targeted approach. CONCLUSIONS These findings underscore the critical role of intracellular HMGB1 in modulating PD-L1 expression via the JAK2-STAT3 signaling pathways in breast cancer and suggest that targeting HMGB1 translocation is a promising strategy for breast cancer treatment.
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Affiliation(s)
- Ju-Young Han
- Department of Microbiology, Yonsei University College of Medicine, 50-1 Yonsei-ro Seodaemun-gu, Seoul, 03722, South Korea
- Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, South Korea
| | - Woo Joong Rhee
- Department of Microbiology, Yonsei University College of Medicine, 50-1 Yonsei-ro Seodaemun-gu, Seoul, 03722, South Korea.
- Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, 03722, South Korea.
| | - Jeon-Soo Shin
- Department of Microbiology, Yonsei University College of Medicine, 50-1 Yonsei-ro Seodaemun-gu, Seoul, 03722, South Korea.
- Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, South Korea.
- Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, 03722, South Korea.
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2
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Datta S, Rahman MA, Koka S, Boini KM. High Mobility Group Box 1 (HMGB1): Molecular Signaling and Potential Therapeutic Strategies. Cells 2024; 13:1946. [PMID: 39682695 PMCID: PMC11639863 DOI: 10.3390/cells13231946] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2024] [Revised: 11/19/2024] [Accepted: 11/21/2024] [Indexed: 12/18/2024] Open
Abstract
High Mobility Group Box 1 (HMGB1) is a highly conserved non-histone chromatin-associated protein across species, primarily recognized for its regulatory impact on vital cellular processes, like autophagy, cell survival, and apoptosis. HMGB1 exhibits dual functionality based on its localization: both as a non-histone protein in the nucleus and as an inducer of inflammatory cytokines upon extracellular release. Pathophysiological insights reveal that HMGB1 plays a significant role in the onset and progression of a vast array of diseases, viz., atherosclerosis, kidney damage, cancer, and neurodegeneration. However, a clear mechanistic understanding of HMGB1 release, translocation, and associated signaling cascades in mediating such physiological dysfunctions remains obscure. This review presents a detailed outline of HMGB1 structure-function relationship and its regulatory role in disease onset and progression from a signaling perspective. This review also presents an insight into the status of HMGB1 druggability, potential limitations in understanding HMGB1 pathophysiology, and future perspective of studies that can be undertaken to address the existing scientific gap. Based on existing paradigm of various studies, HMGB1 is a critical regulator of inflammatory cascades and drives the onset and progression of a broad spectrum of dysfunctions. Studies focusing on HMGB1 druggability have enabled the development of biologics with potential clinical benefits. However, deeper understanding of post-translational modifications, redox states, translocation mechanisms, and mitochondrial interactions can potentially enable the development of better courses of therapy against HMGB1-mediated physiological dysfunctions.
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Affiliation(s)
- Sayantap Datta
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, USA
| | - Mohammad Atiqur Rahman
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, USA
| | - Saisudha Koka
- Department of Pharmaceutical Sciences, Irma Lerma College of Pharmacy, Texas A&M University, Kingsville, TX 78363, USA;
| | - Krishna M. Boini
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, USA
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3
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Ai X, Yu H, Cai Y, Guan Y. Interactions Between Extracellular Vesicles and Autophagy in Neuroimmune Disorders. Neurosci Bull 2024; 40:992-1006. [PMID: 38421513 PMCID: PMC11251008 DOI: 10.1007/s12264-024-01183-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 11/15/2023] [Indexed: 03/02/2024] Open
Abstract
Neuroimmune disorders, such as multiple sclerosis, neuromyelitis optica spectrum disorder, myasthenia gravis, and Guillain-Barré syndrome, are characterized by the dysfunction of both the immune system and the nervous system. Increasing evidence suggests that extracellular vesicles and autophagy are closely associated with the pathogenesis of these disorders. In this review, we summarize the current understanding of the interactions between extracellular vesicles and autophagy in neuroimmune disorders and discuss their potential diagnostic and therapeutic applications. Here we highlight the need for further research to fully understand the mechanisms underlying these disorders, and to develop new diagnostic and therapeutic strategies.
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Affiliation(s)
- Xiwen Ai
- Department of Neurology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, 200127, China
| | - Haojun Yu
- Department of Neurology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, 200127, China
| | - Yu Cai
- Department of Neurology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA.
| | - Yangtai Guan
- Department of Neurology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, 200127, China.
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4
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Palikyras S, Sofiadis K, Stavropoulou A, Danieli‐Mackay A, Varamogianni‐Mamatsi V, Hörl D, Nasiscionyte S, Zhu Y, Papadionysiou I, Papadakis A, Josipovic N, Zirkel A, O'Connell A, Loughran G, Keane J, Michel A, Wagner W, Beyer A, Harz H, Leonhardt H, Lukinavicius G, Nikolaou C, Papantonis A. Rapid and synchronous chemical induction of replicative-like senescence via a small molecule inhibitor. Aging Cell 2024; 23:e14083. [PMID: 38196311 PMCID: PMC11019153 DOI: 10.1111/acel.14083] [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: 10/06/2023] [Revised: 12/07/2023] [Accepted: 01/03/2024] [Indexed: 01/11/2024] Open
Abstract
Cellular senescence is acknowledged as a key contributor to organismal ageing and late-life disease. Though popular, the study of senescence in vitro can be complicated by the prolonged and asynchronous timing of cells committing to it and by its paracrine effects. To address these issues, we repurposed a small molecule inhibitor, inflachromene (ICM), to induce senescence to human primary cells. Within 6 days of treatment with ICM, senescence hallmarks, including the nuclear eviction of HMGB1 and -B2, are uniformly induced across IMR90 cell populations. By generating and comparing various high throughput datasets from ICM-induced and replicative senescence, we uncovered a high similarity of the two states. Notably though, ICM suppresses the pro-inflammatory secretome associated with senescence, thus alleviating most paracrine effects. In summary, ICM rapidly and synchronously induces a senescent-like phenotype thereby allowing the study of its core regulatory program without confounding heterogeneity.
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Affiliation(s)
- Spiros Palikyras
- Institute of PathologyUniversity Medical Center GöttingenGöttingenGermany
| | - Konstantinos Sofiadis
- Institute of PathologyUniversity Medical Center GöttingenGöttingenGermany
- Present address:
Oncode InstituteHubrecht Institute‐KNAW and University Medical Center UtrechtUtrechtThe Netherlands
| | - Athanasia Stavropoulou
- Institute for BioinnovationBiomedical Sciences Research Center “Alexander Fleming”VariGreece
| | - Adi Danieli‐Mackay
- Institute of PathologyUniversity Medical Center GöttingenGöttingenGermany
- Clinical Research Unit 5002University Medical Center GöttingenGöttingenGermany
| | | | - David Hörl
- Faculty of BiologyLudwig Maximilians University MunichMunichGermany
| | | | - Yajie Zhu
- Institute of PathologyUniversity Medical Center GöttingenGöttingenGermany
| | | | - Antonis Papadakis
- Cluster of Excellence on Cellular Stress Responses in Aging‐Associated Diseases (CECAD)University of CologneCologneGermany
| | - Natasa Josipovic
- Institute of PathologyUniversity Medical Center GöttingenGöttingenGermany
- Present address:
Single Cell DiscoveriesUtrechtThe Netherlands
| | - Anne Zirkel
- Center for Molecular Medicine CologneUniversity and University Hospital of CologneCologneGermany
| | | | | | | | | | - Wolfgang Wagner
- Helmholtz‐Institute for Biomedical EngineeringRWTH Aachen University Medical SchoolAachenGermany
- Institute for Stem Cell BiologyRWTH Aachen University Medical SchoolAachenGermany
| | - Andreas Beyer
- Cluster of Excellence on Cellular Stress Responses in Aging‐Associated Diseases (CECAD)University of CologneCologneGermany
| | - Hartmann Harz
- Faculty of BiologyLudwig Maximilians University MunichMunichGermany
| | | | - Grazvydas Lukinavicius
- Department of NanoBiophotonicsMax Planck Institute for Multidisciplinary SciencesGöttingenGermany
| | - Christoforos Nikolaou
- Institute for BioinnovationBiomedical Sciences Research Center “Alexander Fleming”VariGreece
| | - Argyris Papantonis
- Institute of PathologyUniversity Medical Center GöttingenGöttingenGermany
- Clinical Research Unit 5002University Medical Center GöttingenGöttingenGermany
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5
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Raj R, Shen P, Yu B, Zhang J. A patent review on HMGB1 inhibitors for the treatment of liver diseases. Expert Opin Ther Pat 2024; 34:127-140. [PMID: 38557201 DOI: 10.1080/13543776.2024.2338105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 03/27/2024] [Indexed: 04/04/2024]
Abstract
INTRODUCTION HMGB1 is a non-histone chromatin protein released or secreted in response to tissue damage or infection. Extracellular HMGB1, as a crucial immunomodulatory factor, binds with several different receptors to innate inflammatory responses that aggravate acute and chronic liver diseases. The increased levels of HMGB1 have been reported in various liver diseases, highlighting that it represents a potential biomarker and druggable target for therapeutic development. AREAS COVERED This review summarizes the current knowledge on the structure, function, and interacting receptors of HMGB1 and its significance in multiple liver diseases. The latest patented and preclinical studies of HMGB1 inhibitors (antibodies, peptides, and small molecules) for liver diseases are summarized by using the keywords 'HMGB1,' 'HMGB1 antagonist, HMGB1-inhibitor,' 'liver disease' in Web of Science, Google Scholar, Google Patents, and PubMed databases in the year from 2017 to 2023. EXPERT OPINIONS In recent years, extensive research on HMGB1-dependent inflammatory signaling has discovered potent inhibitors of HMGB1 to reduce the severity of liver injury. Despite significant progress in the development of HMGB1 antagonists, few of them are approved for clinical treatment of liver-related diseases. Developing safe and effective specific inhibitors for different HMGB1 isoforms and their interaction with receptors is the focus of future research.
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Affiliation(s)
- Richa Raj
- Department of Resources Science of Traditional Chinese Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, P. R. China
| | - Pingping Shen
- Department of Resources Science of Traditional Chinese Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, P. R. China
| | - Boyang Yu
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, Nanjing, P. R. China
| | - Jian Zhang
- Department of Resources Science of Traditional Chinese Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, P. R. China
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, Nanjing, P. R. China
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6
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Iachettini S, Ciccarone F, Maresca C, D' Angelo C, Petti E, Di Vito S, Ciriolo MR, Zizza P, Biroccio A. The telomeric protein TERF2/TRF2 impairs HMGB1-driven autophagy. Autophagy 2022:1-12. [PMID: 36310382 DOI: 10.1080/15548627.2022.2138687] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023] Open
Abstract
TERF2/TRF2 is a pleiotropic telomeric protein that plays a crucial role in tumor formation and progression through several telomere-dependent and -independent mechanisms. Here, we uncovered a novel function for this protein in regulating the macroautophagic/autophagic process upon different stimuli. By using both biochemical and cell biology approaches, we found that TERF2 binds to the non-histone chromatin-associated protein HMGB1, and this interaction is functional to the nuclear/cytoplasmic protein localization. Specifically, silencing of TERF2 alters the redox status of the cells, further exacerbated upon EBSS nutrient starvation, promoting the cytosolic translocation and the autophagic activity of HMGB1. Conversely, overexpression of wild-type TERF2, but not the mutant unable to bind HMGB1, negatively affects the cytosolic translocation of HMGB1, counteracting the stimulatory effect of EBSS starvation. Moreover, genetic depletion of HMGB1 or treatment with inflachromene, a specific inhibitor of its cytosolic translocation, completely abolished the pro-autophagic activity of TERF2 silencing. In conclusion, our data highlighted a novel mechanism through which TERF2 modulates the autophagic process, thus demonstrating the key role of the telomeric protein in regulating a process that is fundamental, under both physiological and pathological conditions, in defining the fate of the cells.Abbreviations: ALs: autolysosomes; ALT: alternative lengthening of telomeres; ATG: autophagy related; ATM: ATM serine/threonine kinase; CQ: Chloroquine; DCFDA: 2',7'-dichlorofluorescein diacetate; DDR: DNA damage response; DHE: dihydroethidium; EBSS: Earle's balanced salt solution; FACS: fluorescence-activated cell sorting; GFP: green fluorescent protein; EGFP: enhanced green fluorescent protein; GSH: reduced glutathione; GSSG: oxidized glutathione; HMGB1: high mobility group box 1; ICM: inflachromene; IF: immunofluorescence; IP: immunoprecipitation; NAC: N-acetyl-L-cysteine; NHEJ: non-homologous end joining; PLA: proximity ligation assay; RFP: red fluorescent protein; ROS: reactive oxygen species; TIF: telomere-induced foci; TERF2/TRF2: telomeric repeat binding factor 2.
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Affiliation(s)
- Sara Iachettini
- Translational Oncology Research Unit, IRCCS - Regina Elena National Cancer Institute, Rome, Italy
| | - Fabio Ciccarone
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy.,Biochemistry of aging section, IRCCS San Raffaele Roma, Rome, Italy
| | - Carmen Maresca
- Translational Oncology Research Unit, IRCCS - Regina Elena National Cancer Institute, Rome, Italy
| | - Carmen D' Angelo
- Translational Oncology Research Unit, IRCCS - Regina Elena National Cancer Institute, Rome, Italy
| | - Eleonora Petti
- Translational Oncology Research Unit, IRCCS - Regina Elena National Cancer Institute, Rome, Italy
| | - Serena Di Vito
- Translational Oncology Research Unit, IRCCS - Regina Elena National Cancer Institute, Rome, Italy
| | - Maria Rosa Ciriolo
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy.,Biochemistry of aging section, IRCCS San Raffaele Roma, Rome, Italy
| | - Pasquale Zizza
- Translational Oncology Research Unit, IRCCS - Regina Elena National Cancer Institute, Rome, Italy
| | - Annamaria Biroccio
- Translational Oncology Research Unit, IRCCS - Regina Elena National Cancer Institute, Rome, Italy
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Choi W, Kang S, Kim J. New insights into the role of the Golgi apparatus in the pathogenesis and therapeutics of human diseases. Arch Pharm Res 2022; 45:671-692. [PMID: 36178581 DOI: 10.1007/s12272-022-01408-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/20/2022] [Indexed: 11/24/2022]
Abstract
The Golgi apparatus is an essential cellular organelle that mediates homeostatic functions, including vesicle trafficking and the post-translational modification of macromolecules. Its unique stacked structure and dynamic functions are tightly regulated, and several Golgi proteins play key roles in the functioning of unconventional protein secretory pathways triggered by cellular stress responses. Recently, an increasing number of studies have implicated defects in Golgi functioning in human diseases such as cancer, neurodegenerative, and immunological disorders. Understanding the extraordinary characteristics of Golgi proteins is important for elucidating its associated intracellular signaling mechanisms and has important ramifications for human health. Therefore, analyzing the mechanisms by which the Golgi participates in disease pathogenesis may be useful for developing novel therapeutic strategies. This review articulates the structural features and abnormalities of the Golgi apparatus reported in various diseases and the suspected mechanisms underlying the Golgi-associated pathologies. Furthermore, we review the potential therapeutic strategies based on Golgi function.
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Affiliation(s)
- Wooseon Choi
- Department of Pharmacology, Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, 06591, Korea
| | - Shinwon Kang
- Department of Physiology, University of Toronto, Toronto, ON, Canada.,Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Sinai Health System, Toronto, ON, Canada
| | - Jiyoon Kim
- Department of Pharmacology, Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, 06591, Korea.
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8
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George AJ, Dong B, Lail H, Gomez M, Hoffiz YC, Ware CB, Fang N, Murphy AZ, Hrabovszky E, Wanders D, Mabb AM. The E3 ubiquitin ligase RNF216/TRIAD3 is a key coordinator of the hypothalamic-pituitary-gonadal axis. iScience 2022; 25:104386. [PMID: 35620441 PMCID: PMC9126796 DOI: 10.1016/j.isci.2022.104386] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 03/25/2022] [Accepted: 05/05/2022] [Indexed: 11/25/2022] Open
Abstract
Recessive mutations in RNF216/TRIAD3 cause Gordon Holmes syndrome (GHS), in which dysfunction of the hypothalamic-pituitary-gonadal (HPG) axis and neurodegeneration are thought to be core phenotypes. We knocked out Rnf216/Triad3 in a gonadotropin-releasing hormone (GnRH) hypothalamic cell line. Rnf216/Triad3 knockout (KO) cells had decreased steady-state GnRH and calcium transients. Rnf216/Triad3 KO adult mice had reductions in GnRH neuron soma size and GnRH production without changes in neuron densities. In addition, KO male mice had smaller testicular volumes that were accompanied by an abnormal release of inhibin B and follicle-stimulating hormone, whereas KO females exhibited irregular estrous cycling. KO males, but not females, had reactive microglia in the hypothalamus. Conditional deletion of Rnf216/Triad3 in neural stem cells caused abnormal microglia expression in males, but reproductive function remained unaffected. Our findings show that dysfunction of RNF216/TRIAD3 affects the HPG axis and microglia in a region- and sex-dependent manner, implicating sex-specific therapeutic interventions for GHS. Rnf216/Triad3 controls GnRH production and intrinsic hypothalamic cell activity Rnf216/Triad3 knockout male mice have greater reproductive impairments than females Rnf216/Triad3 controls the HPG axis differently in males and females Rnf216/Triad3 knockout male mice have reactive microglia in the hypothalamus
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9
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Meng Q, Pu L, Qi M, Li S, Sun B, Wang Y, Liu B, Li F. Laminar shear stress inhibits inflammation by activating autophagy in human aortic endothelial cells through HMGB1 nuclear translocation. Commun Biol 2022; 5:425. [PMID: 35523945 PMCID: PMC9076621 DOI: 10.1038/s42003-022-03392-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 04/21/2022] [Indexed: 11/09/2022] Open
Abstract
Prevention and treatment of atherosclerosis (AS) by targeting the inflammatory response in vascular endothelial cells has attracted much attention in recent years. Laminar shear stress (LSS) has well-recognized anti-AS properties, however, the exact molecular mechanism remains unclear. In this study, we found that LSS could inhibit the increased expression of intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), cyclooxygenase-2 (COX-2), and matrix metallopeptidase-9 (MMP-9) caused by TNF-α in an autophagy-dependent pathway in human aortic endothelial cells (HAECs) and human umbilical vein endothelial cells (HUVECs). Whole-transcriptome sequencing analysis revealed that erythropoietin-producing hepatocyte receptor B2 (EPHB2) was a key gene in response to LSS. Moreover, co-immunoprecipitation assay indicated that LSS could enhance the EPHB2-mediated nuclear translocation of high mobility group box-1 (HMGB1), which interacts with Beclin-1 (BECN1) and finally leads to autophagy. Simultaneously, we identified an LSS-sensitive long non-coding RNA (lncRNA), LOC10798635, and constructed an LSS-related LOC107986345/miR-128-3p/EPHB2 regulatory axis. Further research revealed the anti-inflammatory effect of LSS depends on autophagy activation resulting from the nuclear translocation of HMGB1 via the LOC107986345/miR-128-3p/EPHB2 axis. Our study demonstrates that LSS could regulate the expression of EPHB2 in HAECs, and the LOC107986345/miR-128-3p/EPHB2 axis plays a vital role in AS development.
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Affiliation(s)
- Qingyu Meng
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Luya Pu
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Mingran Qi
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Shuai Li
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Banghao Sun
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Yaru Wang
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Bin Liu
- Cardiovascular Disease Center, The First Hospital of Jilin University, Changchun, China.
| | - Fan Li
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China. .,Engineering Research Center for Medical Biomaterials of Jilin Province, Jilin University, Changchun, China. .,Key Laboratory for Health Biomedical Materials of Jilin Province, Jilin University, Changchun, China. .,State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang, China. .,The Key Laboratory for Bionics Engineering, Ministry of Education, Jilin University, Changchun, China.
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10
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Parry HA, Randall RB, Hyatt HW, Hood WR, Kavazis AN. Short and long-term effect of reproduction on mitochondrial dynamics and autophagy in rats. Heliyon 2021; 7:e08070. [PMID: 34622072 PMCID: PMC8479403 DOI: 10.1016/j.heliyon.2021.e08070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 06/27/2021] [Accepted: 09/22/2021] [Indexed: 11/18/2022] Open
Abstract
We evaluated mitochondrial dynamics and autophagy by investigating the acute and long-term changes in the liver and skeletal muscle of rats in multiple reproductive stages. A total of 48 rats were used. Rats were randomly assigned to three groups (n = 16 per group): nonreproductive females; females that became pregnant, gave birth, but had their pups removed at birth, and thus, did not lactate; and females that experienced pregnancy, gave birth, and were allowed to lactate. Each group was further divided into two-time subgroups (n = 8 per subgroup) and data were collected at a time-point corresponding to 1) peak lactation (day 14 of lactation) in the lactating animals (4 months of age) and 2) 15 weeks after parturition (12 weeks post-weaning in lactating animals; 7 months of age). Levels of several proteins involved in mitochondrial dynamics and the autophagy system were measured in the liver and skeletal muscle. Beclin1 protein levels in the liver were higher in non-lactating rats two weeks after parturition, while Beclin1 protein levels were highest in 7-month-old animals that had previously experienced a standard reproductive event that included pregnancy and a full 3 week of lactation. These animals also exhibited higher protein levels of the mitochondrial fusion marker Mfn2 in the liver. In skeletal muscle, we also observed increased protein levels of the mitochondrial fission marker DRP1 in non-lactating animals compared to animals that lactated. In summary, our data provide insightful information on the mechanisms that influence liver and skeletal muscle remodeling in response to the metabolic challenges of reproduction, and lactation in particular. Autophagy remodeling and mitochondrial fusion seem to coincide with liver mass size during the lactation stage of reproduction. Our findings highlight the complex changes that occur in the liver and skeletal muscle during reproduction, and highlights the remarkable plasticity required during this demanding metabolic feat.
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Affiliation(s)
| | - Ryleigh B. Randall
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL, USA
| | - Hayden W. Hyatt
- School of Kinesiology, Auburn University, Auburn, AL, USA
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Wendy R. Hood
- Department of Biological Sciences, Auburn University, Auburn, AL, USA
| | - Andreas N. Kavazis
- School of Kinesiology, Auburn University, Auburn, AL, USA
- Corresponding author.
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11
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El-Emam SZ. Sesamol Alleviates the Cytotoxic Effect of Cyclophosphamide on Normal Human Lung WI-38 Cells via Suppressing RAGE/NF-κB/Autophagy Signaling. NATURAL PRODUCTS AND BIOPROSPECTING 2021; 11:333-343. [PMID: 33216292 PMCID: PMC8141072 DOI: 10.1007/s13659-020-00286-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 11/11/2020] [Indexed: 05/07/2023]
Abstract
Cyclophosphamide (CYL) is a chemotherapeutic medication commonly used in managing various malignancies like breast cancer or leukemia. Though, CYL has been documented to induce lung toxicity. Mechanism of CYL toxicity is through oxidative stress and the release of damage-associated molecular patterns (DAMPs). Sesamol (SES) is a natural antioxidant isolated from Sesamum indicum and its effect against CYL-induced lung toxicity is not studied yet. This study aims to investigate whether SES could prevent any deleterious effects induced by CYL on lung using normal human lung cells, WI-38 cell line, without suppressing its efficacy. Cells were pretreated with SES and/or CYL for 24 h, then cell viability was estimated by MTS and trypan blue assays. The mode of cell death was determined by AO/EB staining. Additionally, caspase-3 level, oxidative stress, and inflammatory markers were evaluated by colorimetric and ELISA techniques. qRT-PCR was performed to evaluate RAGE, NF-κB, and Beclin-1 mRNA-expression. CYL-treated WI-38 cells developed a significantly increased cell death with enhanced oxidative and RAGE/NF-κb/Autophagy signaling, which were all attenuated after pretreatment with SES. Thus, we concluded that SES offered a protective role against CYL-induced lung injury via suppressing oxidative stress and RAGE/NF-κB/Autophagy signaling, which is a natural safe therapeutic option against CYL toxicities.
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Affiliation(s)
- Soad Z El-Emam
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, October 6 University, 6 October City, Giza, 12566, Egypt.
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Chung H, Nam H, Nguyen-Phuong T, Jang J, Hong SJ, Choi SW, Park SB, Park CG. The blockade of cytoplasmic HMGB1 modulates the autophagy/apoptosis checkpoint in stressed islet beta cells. Biochem Biophys Res Commun 2021; 534:1053-1058. [PMID: 33160622 DOI: 10.1016/j.bbrc.2020.10.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 10/14/2020] [Indexed: 01/07/2023]
Abstract
High mobility group (HMGB1) is an alarmin known to be harmful to pancreatic beta cells and associated with diabetes mellitus pathogenesis and pancreatic islet graft failure. It has been long thought that the suppression of HMGB1 molecule is beneficial to the beta cells. However, recent studies have indicated that cytoplasmic HMGB1 (cHMGB1) could function as a modulator to relieve cells from apoptotic stress by autophagy induction. Particularly, pancreatic beta cells have been known to utilize the autophagy-to-apoptosis switch when exposed to hypoxia or lipotoxicity. This study aimed to investigate the beta cells under hypoxic and lipotoxic stress while utilizing a small molecule inhibitor of HMGB1, inflachromene (ICM) which can suppress cHMGB1 accumulation. It was revealed that under cellular stress, blockade of cHMGB1 accumulation decreased the viability of islet grafts, primary islets and MIN6 cells. MIN6 cells under cHMGB1 blockade along with lipotoxic stress showed decreased autophagic flux and increased apoptosis. Moreover, cHMGB1 blockade in HFD-fed mice produced unfavorable outcomes on their glucose tolerance. In sum, these results suggested the role of cHMGB1 within beta cell autophagy/apoptosis checkpoint. Given the importance of autophagy in beta cells under apoptotic stresses, this study might provide further insights regarding HMGB1 and diabetes.
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Affiliation(s)
- Hyunwoo Chung
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Hyunsung Nam
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Thuy Nguyen-Phuong
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Jiyun Jang
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Sung Ji Hong
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - So Won Choi
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Seung Bum Park
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea.
| | - Chung-Gyu Park
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; Xenotransplantation Research Center, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; Institute of Endemic Diseases, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; Biomedical Research Institute, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea.
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14
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Yuan S, Liu Z, Xu Z, Liu J, Zhang J. High mobility group box 1 (HMGB1): a pivotal regulator of hematopoietic malignancies. J Hematol Oncol 2020; 13:91. [PMID: 32660524 PMCID: PMC7359022 DOI: 10.1186/s13045-020-00920-3] [Citation(s) in RCA: 125] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 06/16/2020] [Indexed: 02/06/2023] Open
Abstract
High mobility group box 1 (HMGB1) is a nonhistone chromatin-associated protein that has been widely reported to play a pivotal role in the pathogenesis of hematopoietic malignancies. As a representative damage-associated molecular pattern (DAMP), HMGB1 normally exists inside cells but can be secreted into the extracellular environment through passive or active release. Extracellular HMGB1 binds with several different receptors and interactors to mediate the proliferation, differentiation, mobilization, and senescence of hematopoietic stem cells (HSCs). HMGB1 is also involved in the formation of the inflammatory bone marrow (BM) microenvironment by activating proinflammatory signaling pathways. Moreover, HMGB1-dependent autophagy induces chemotherapy resistance in leukemia and multiple myeloma. In this review, we systematically summarize the emerging roles of HMGB1 in carcinogenesis, progression, prognosis, and potential clinical applications in different hematopoietic malignancies. In summary, targeting the regulation of HMGB1 activity in HSCs and the BM microenvironment is highly beneficial in the diagnosis and treatment of various hematopoietic malignancies.
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Affiliation(s)
- Shunling Yuan
- Department of Clinical Laboratory, The First Affiliated Hospital, University of South China, Hengyang, 421001, Hunan, China
| | - Zhaoping Liu
- Department of Clinical Laboratory, The First Affiliated Hospital, University of South China, Hengyang, 421001, Hunan, China
| | - Zhenru Xu
- Department of Clinical Laboratory, The First Affiliated Hospital, University of South China, Hengyang, 421001, Hunan, China
| | - Jing Liu
- Hunan Province Key Laboratory of Basic and Applied Hematology, Molecular Biology Research Center & Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, 410078, Hunan, China.
| | - Ji Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital, University of South China, Hengyang, 421001, Hunan, China.
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Kwak MS, Kim HS, Lee B, Kim YH, Son M, Shin JS. Immunological Significance of HMGB1 Post-Translational Modification and Redox Biology. Front Immunol 2020; 11:1189. [PMID: 32587593 PMCID: PMC7297982 DOI: 10.3389/fimmu.2020.01189] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/13/2020] [Indexed: 12/19/2022] Open
Abstract
Most extracellular proteins are secreted via the classical endoplasmic reticulum (ER)/Golgi-dependent secretion pathway; however, some proteins, including a few danger-associated molecular patterns (DAMPs), are secreted via non-classical ER/Golgi-independent secretion pathways. The evolutionarily conserved high mobility group box1 (HMGB1) is a ubiquitous nuclear protein that can be released by almost all cell types. HMGB1 lacks signal peptide and utilizes diverse non-canonical secretion mechanisms for its extracellular export. Although the post-translational modifications of HMGB1 were demonstrated, the oxidation of HMGB1 and secretion mechanisms are not highlighted yet. We currently investigated that peroxiredoxins I and II (PrxI/II) induce the intramolecular disulfide bond formation of HMGB1 in the nucleus. Disulfide HMGB1 is preferentially transported out of the nucleus by binding to the nuclear exportin chromosome-region maintenance 1 (CRM1). We determined the kinetics of HMGB1 oxidation in bone marrow-derived macrophage as early as a few minutes after lipopolysaccharide treatment, peaking at 4 h while disulfide HMGB1 accumulation was observed within the cells, starting to secrete in the late time point. We have shown that HMGB1 oxidation status, which is known to determine the biological activity in extracellular HMGB1, is crucial for the secretion of HMGB1 from the nucleus. This review summarizes selected aspects of HMGB1 redox biology relevant to the induction and propagation of inflammatory diseases. We implicate the immunological significance and the need for novel HMGB1 inhibitors through mechanism-based studies.
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Affiliation(s)
- Man Sup Kwak
- Department of Microbiology, Yonsei University College of Medicine, Seoul, South Korea.,Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, South Korea
| | - Hee Sue Kim
- Department of Microbiology, Yonsei University College of Medicine, Seoul, South Korea
| | - Bin Lee
- Department of Microbiology, Yonsei University College of Medicine, Seoul, South Korea
| | - Young Hun Kim
- Department of Microbiology, Yonsei University College of Medicine, Seoul, South Korea.,Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, South Korea
| | - Myoungsun Son
- Center for Autoimmune Musculoskeletal and Hematopoietic Diseases, Institute of Molecular Medicine, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
| | - Jeon-Soo Shin
- Department of Microbiology, Yonsei University College of Medicine, Seoul, South Korea.,Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, South Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.,Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul, South Korea
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16
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Zhu H, Qu Y. Expression levels of ARHI and Beclin1 in thyroid cancer and their relationship with clinical pathology and prognosis. Oncol Lett 2019; 19:1241-1246. [PMID: 31966053 PMCID: PMC6956424 DOI: 10.3892/ol.2019.11223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 11/22/2019] [Indexed: 12/18/2022] Open
Abstract
Expression levels of autophagy-related genes ARHI and Beclin1 in thyroid cancer and their relationship with clinical pathology and prognosis were investigated. The expression levels of ARHI and Beclin1 proteins in 80 cases of thyroid cancer and adjacent tissues were detected by western blot analysis. According to the expression levels of ARHI and Beclin1, low- and high-expression groups were determined and the relationship of the expression levels with the pathological parameters and prognosis in thyroid cancer was compared between the two groups. The correlation between the ARHI and Beclin1 protein expression level was analyzed by Pearsons correlation analysis. The levels of ARHI and Beclin1 proteins in thyroid cancer tissues were significantly lower than those in adjacent tissues (P<0.05). There was a significant difference in the expression levels of ARHI and Beclin1 in terms of pathological stage and differentiation degree of cancer tissues (P<0.001); however, there was no significant difference in the expression levels of ARHI and Beclin1 for different types of cancer tissues (P>0 05). There was a positive correlation between the expression levels of Beclin1 and ARHI (r=0.5187, P<0.001). The 3-year survival rates of patients with low-expression level of ARHI and Beclin1 proteins were significantly lower than those of patients with high expression (P<0.05). In conclusion, the expression levels of Beclin1 and ARHI were low in thyroid cancer, and were significantly associated with the pathological stage, differentiation degree and prognosis in thyroid cancer. Beclin1 and ARHI can be used as predictors for the development and prognosis of thyroid cancer.
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Affiliation(s)
- Houwei Zhu
- Department of Thyroid Surgery, Yantaishan Hospital, Yantai, Shandong 264000, P.R. China
| | - Yanqing Qu
- Department of Thyroid Surgery, Yantaishan Hospital, Yantai, Shandong 264000, P.R. China
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