1
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Cole-Skinner B, Andre NM, Blankenheim Z, Root KM, Jafri K, Simmons GE. Oleate alters the immune response in non-small cell lung adenocarcinoma through regulation of HMGB1 release. Front Cell Dev Biol 2024; 12:1348707. [PMID: 39100092 PMCID: PMC11294209 DOI: 10.3389/fcell.2024.1348707] [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: 12/03/2023] [Accepted: 07/10/2024] [Indexed: 08/06/2024] Open
Abstract
Background: Cancer cell evasion of the immune response is critical to cancer development and metastases. Clinicians' ability to kickstart the immune system to target these rogue cells is an ever-growing area of research and medicine. This study delved into the relationship between lipid metabolism, High Mobility Group Box 1 protein (HMGB1)-a pro-inflammatory damage-associated molecular pattern protein-and immune regulation within non-small cell lung adenocarcinoma (NSCLC). Method: To address this question, we used a combination of proteomics, molecular biology, and bioinformatic techniques to investigate the relationship between fatty acids and immune signals within NSCLC. Results: We found that the expression of stearoyl CoA desaturase 1 (SCD1) was decreased in NSCLC tumors compared to normal tissues. This emphasized the critical role of lipid metabolism in tumor progression. Interestingly, monounsaturated fatty acid (MUFA) availability affected the expression of programmed death ligand-1 (PD-L1), a pivotal immune checkpoint target in lung cancer cells and immune cells, as well as HMGB1, suggesting a novel approach to modulating the immune response. This study uncovered a complex interplay between SCD1, PD-L1, and HMGB1, influencing the immunological sensitivity of tumors. Conclusion: Our work underscores the critical importance of understanding the intricate relationships between lipid metabolism and immune modulation to develop more effective NSCLC treatments and personalized therapies. As we continue to explore these connections, we hope to contribute significantly to the ever-evolving field of cancer research, improving patient outcomes and advancing precision medicine in NSCLC.
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Affiliation(s)
- Breanna Cole-Skinner
- Department of Molecular Microbiology and Immunology, University of Missouri, Columbia, United States
| | - Nicole M. Andre
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, United States
| | - Zachary Blankenheim
- Department of Biomedical Sciences, School of Medicine, University of Minnesota, Duluth, United States
| | - Kate M. Root
- Department of Biomedical Sciences, School of Medicine, University of Minnesota, Duluth, United States
| | - Kisa Jafri
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, United States
| | - Glenn E. Simmons
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, United States
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2
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Cole-Skinner B, Andre NM, Blankenheim Z, Root K, Simmons GE. Unsaturated fatty acid alters the immune response in non-small cell lung adenocarcinoma through regulation of HMGB1 trafficking. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.08.566231. [PMID: 37986958 PMCID: PMC10659279 DOI: 10.1101/2023.11.08.566231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Cancer cell evasion of the immune response is critical to cancer development and metastases. The ability of clinicians to kickstart the immune system to target these rogue cells is an ever-growing area of research and medicine. In this study, we delved into the relationship between lipid metabolism, High Mobility Group Box 1 protein (HMGB1), and immune regulation within non-small cell lung adenocarcinoma (NSCLC), shedding light on novel therapeutic avenues and potential personalized approaches for patients. We found that the expression of stearoyl CoA desaturase 1 (SCD1) was decreased in NSCLC tumors compared to normal tissues. This emphasized the critical role of lipid metabolism in tumor progression. Interestingly, monounsaturated fatty acid (MUFA) availability impacted the expression of programmed death receptor ligand -1 (PD-L1), a pivotal immune checkpoint target in lung cancer cells and immune cells, suggesting a novel approach to modulating the immune response. This study uncovered a complex interplay between HMGB1, SCD1, and PD-L1, influencing the immunological sensitivity of tumors. Our work underscores the importance of understanding the intricate relationships between lipid metabolism and immune modulation to develop more effective NSCLC treatments and personalized therapies. As we continue to explore these connections, we hope to contribute to the ever-evolving field of cancer research, improving patient outcomes and advancing precision medicine in NSCLC.
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Affiliation(s)
- Breanna Cole-Skinner
- Department of Molecular Microbiology and Immunology, University of Missouri, Columbia
| | - Nicole M. Andre
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca
| | - Zachary Blankenheim
- Department of Biomedical Sciences, University of Minnesota School of Medicine, Duluth
| | - Kate Root
- Department of Biomedical Sciences, University of Minnesota School of Medicine, Duluth
| | - Glenn E. Simmons
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca
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Wei L, Zhang W, Li Y, Zhai J. The SIRT1-HMGB1 axis: Therapeutic potential to ameliorate inflammatory responses and tumor occurrence. Front Cell Dev Biol 2022; 10:986511. [PMID: 36081910 PMCID: PMC9448523 DOI: 10.3389/fcell.2022.986511] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 08/02/2022] [Indexed: 11/13/2022] Open
Abstract
Inflammation is a common complication of many chronic diseases. It includes inflammation of the parenchyma and vascular systems. Sirtuin 1 (SIRT1) is a nicotinamide adenine dinucleotide (NAD)-dependent histone deacetylase, which can directly participate in the suppression of inflammation. It can also regulate the activity of other proteins. Among them, high mobility group box 1 (HMGB1) signaling can be inhibited by deacetylating four lysine residues (55, 88, 90, and 177) in quiescent endothelial cells. HMGB1 is a ubiquitous nuclear protein, once translocated outside the cell, which can interact with various target cell receptors including the receptor for advanced glycation end-products (RAGE), toll-like receptor (TLR) 2, and TLR4 and stimulates the release of pro-inflammatory cyto-/chemokines. And SIRT1 has been reported to inhibit the activity of HMGB1. Both are related to the occurrence and development of inflammation and associated diseases but show an antagonistic relationship in controlling inflammation. Therefore, in this review, we introduce how this signaling axis regulates the emergence of inflammation-related responses and tumor occurrence, providing a new experimental perspective for future inflammation research. In addition, it explores diverse upstream regulators and some natural/synthetic activators of SIRT1 as a possible treatment for inflammatory responses and tumor occurrence which may encourage the development of new anti-inflammatory drugs. Meanwhile, this review also introduces the potential molecular mechanism of the SIRT1-HMGB1 pathway to improve inflammation, suggesting that SIRT1 and HMGB1 proteins may be potential targets for treating inflammation.
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Affiliation(s)
- Lanyi Wei
- Department of Clinical Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, China
- Department of Pharmacy, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Wenrui Zhang
- Department of Clinical Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yueyang Li
- Department of Clinical Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Jinghui Zhai
- Department of Clinical Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, China
- *Correspondence: Jinghui Zhai,
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Wu YJ, Fang WJ, Pan S, Zhang SS, Li DF, Wang ZF, Chen WG, Yin Q, Zuo J. Regulation of Sirt1 on energy metabolism and immune response in rheumatoid arthritis. Int Immunopharmacol 2021; 101:108175. [PMID: 34689102 DOI: 10.1016/j.intimp.2021.108175] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 12/21/2022]
Abstract
Rheumatoid arthritis (RA) is a systemic autoimmune disease. Synovial hyperplasia and persistent inflammation serve as its typical pathological manifestations, which ultimately lead to joint destruction and function loss. Both clinical observations and metabolomics studies have revealed the prevalence of metabolic disorders in RA. In inflammatory immune microenvironments, energy metabolism is profoundly changed. Increasingly evidences suggest that this abnormality is involved in the occurrence and development of RA-related inflammation. Unsurprisingly, many energy metabolism sensors have been confirmed with immunoregulatory properties. As a representative, silent information regulator type 1 (Sirt1) controls many aspects of immune cells, such as cell lifespan, polarization, and secretion by functioning as a transcriptional regulator. Because of the profound clinical implication, researches on Sirt1 in the regulation of energy metabolism and immune functions under RA conditions have gradually gained momentum. This signaling balances glycolysis, lipid metabolism and insulin secretion orchestrating with other metabolism sensors, and consequently affects immune milieu through a so-called metabolism-immune feedback mechanism. This article reviews the involvement of Sirt1 in RA by discussing its impacts on energy metabolism and immune functions, and specially highlights the potential of Sirt1-targeting anti-rheumatic regimens. It also provides a theoretical basis for clarifying the mystery about the high incidence of metabolic complications in RA patients and identifying new anti-rheumatic reagents.
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Affiliation(s)
- Yi-Jin Wu
- Department of Pharmacy, the Second Affiliated Hospital of Wannan Medical College, Wuhu, China; Xin'An Medicine Research Center, Wannan Medical College, Wuhu, China
| | - Wen-Juan Fang
- The Second People's Hospital of Hefei, Heifei, China
| | - Shu Pan
- Department of Pharmacy, the Second Affiliated Hospital of Wannan Medical College, Wuhu, China; Xin'An Medicine Research Center, Wannan Medical College, Wuhu, China
| | - Sa-Sa Zhang
- Department of Pharmacy, the Second Affiliated Hospital of Wannan Medical College, Wuhu, China; Xin'An Medicine Research Center, Wannan Medical College, Wuhu, China
| | - Dan-Feng Li
- Department of Traditional Chinese Medicine, the First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China
| | - Zhong-Fang Wang
- Department of Pharmacy, the Second Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Wen-Gang Chen
- Department of Pharmacy, the Second Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Qin Yin
- Department of Pharmacy, the Second Affiliated Hospital of Wannan Medical College, Wuhu, China.
| | - Jian Zuo
- Department of Traditional Chinese Medicine, the First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China; Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution, Wannan Medical College, Wuhu, China.
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5
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IL-38 restrains inflammatory response of collagen-induced arthritis in rats via SIRT1/HIF-1α signaling pathway. Biosci Rep 2021; 40:223089. [PMID: 32347300 PMCID: PMC7256678 DOI: 10.1042/bsr20182431] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 04/26/2020] [Accepted: 04/27/2020] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE To observe the restraining effect of IL-38 on inflammatory response in collagen-induced arthritis rats (CIA), and to explore the regulatory mechanism of SIRT1/HIF-1α signaling pathway. METHODS 40 SD rats were randomly divided into Control group, CIA group, CLL group and CLH group, with 10 rats in each group; CIA rat model was established. The effects of IL-38 on arthritis index, inflammatory response, osteogenic factor and angiogenic factor were observed by methods including HE staining, ELISA, immunohistochemical and immunofluorescence. Human synoviocytes were cultured in vitro, and SIRT1 inhibitors were added to detect the expression for relating factors of SIRT1/HIF-1α signaling pathway by Western blot. RESULTS IL-38 could alleviate CIA joint damage and restrain inflammatory response, could up-regulate the expression of OPG in CIA rats and could down-regulate the expression of RANKL and RANK. IL-38 could restrain the expression of VEGF, VEGFR1, VEGFR2 and HIF. Moreover, we found that IL-38 could up-regulate the SIRT1 expression and down-regulate the HIF-1α, TLR4 and NF-KB p65 expression in CLL and CLH groups. From the treatment of synoviocytes to simulate the CIA model and the treatment of SIRT1 inhibitors, we demonstrated that the inhibitory effect of IL-38 on inflammatory factors and regulation of SIRT1/HIF-1α signaling pathway-related proteins were inhibited. CONCLUSION IL-38 can restrain the inflammatory response of CIA rats, can promote the expression of osteogenic factors, can inhibit neovascularization, and can alleviate joint damage in rats. The mechanism may be related to the regulation of SIRT1/HIF-1α signaling pathway.
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6
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Wu X, Zhang Y, Chen L, Han Y, Song Y, Cheng H. BTX-A Promotes Expression of Angiogenesis-Associated Genes in Human Umbilical Vein Endothelial Cells. DNA Cell Biol 2020; 39:2154-2165. [PMID: 33181024 DOI: 10.1089/dna.2020.6004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Raynaud's phenomenon (RP) is an episodic vasospasm of the peripheral arteries caused by an exaggerated reaction to cold temperature or emotional stress. Restoring the angiogenesis capability of the acral lesional skin is a critical strategy to treat RP. Local injection of botulinum toxin-A (BTX-A) has also been reported for treatment of RP. However, since the exact mechanisms of BTX-A action are still unclear, its administration for treatment of RP is not widely used. In the present study, BTX-A was found to promote angiogenesis and relieve RP in the patient. To elucidate its mechanisms against angiogenesis, BTX-A was used to treat human umbilical vein endothelial cells (HUVECs), one of the most popular in vitro models of angiogenesis, and RNA sequencing was used to investigate differentially expressed genes. A total of 413 genes were upregulated, and 1634 were downregulated, with fold-changes >2.0 in HUVECs treated with BTX-A. Gene ontology annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis showed BTX-A affected expression of angiogenesis-associated, angiogenesis-associated signaling pathway-related, metabolic pathway, and epigenetic regulation-related genes. These results demonstrate potential biomarkers of BTX-A action, thereby providing potential therapeutic mechanism(s) by which BTX-A relieves RP symptoms.
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Affiliation(s)
- Xia Wu
- Department of Dermatology and Venereology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, P.R. China
| | - Yu Zhang
- Department of Dermatology and Venereology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, P.R. China
| | - Luxia Chen
- Department of Dermatology and Venereology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, P.R. China
| | - Yongmei Han
- Department of Dermatology and Venereology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, P.R. China
| | - Yinjing Song
- Department of Dermatology and Venereology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, P.R. China
| | - Hao Cheng
- Department of Dermatology and Venereology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, Hangzhou, Zhejiang, P.R. China
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7
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Pasquereau S, Totoson P, Nehme Z, Abbas W, Kumar A, Verhoeven F, Prati C, Wendling D, Demougeot C, Herbein G. Impact of glucocorticoids on systemic sirtuin 1 expression and activity in rats with adjuvant-induced arthritis. Epigenetics 2020; 16:132-143. [PMID: 32615849 DOI: 10.1080/15592294.2020.1790789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The class III histone deacetylase sirtuin 1 (SIRT1) plays a pivotal role in numerous biological and physiological functions, including inflammation. An association between SIRT1 and proinflammatory cytokines might exist. In addition to their important role in inflammation associated with rheumatoid arthritis (RA), proinflammatory cytokines mediate the development of systemic effects. Here, we evaluated systemic SIRT1 expression and enzymatic activity, in peripheral blood mononuclear cells (PBMCs) and in liver isolated from rats with adjuvant-induced arthritis (AIA), treated or not with low or high doses of glucocorticoids (GCs). We also measured the production of tumour necrosis factor alpha (TNF) and interleukin-1 beta (IL-1 beta) in PBMCs and liver. We found that SIRT1 expression and activity increased in PBMCs of AIA rats compared to healthy controls and decreased under GC treatment. Similarly, we observed an increased SIRT1 activity in the liver of AIA rats compared to healthy controls which decreased under high doses of GCs. We also found an increase in IL-1 beta and TNF levels in the liver of AIA rats compared to healthy controls, which decreased under high doses of GC. We did not observe a significant correlation between SIRT1 activity and proinflammatory cytokine production in PBMC or liver. In contrast, a strong positive correlation was found between the liver levels of TNF and IL-1 beta (rho=0.9503, p=7.5x10-21). Our results indicate that increased inflammation in AIA rats compared to healthy control is accompanied by an increased SIRT1 activity in both PBMCs and liver, which could be decreased under GC treatment.
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Affiliation(s)
- Sébastien Pasquereau
- Pathogens & Inflammation/EPILAB Laboratory, UPRES EA 4266, SFR FED 4234, University of Franche-Comté, Université Bourgogne Franche-Comté (UBFC) , Besançon, France
| | - Perle Totoson
- Pepite EA4267, Université Bourgogne Franche-Comté (UBFC) , Besançon, France
| | - Zeina Nehme
- Pathogens & Inflammation/EPILAB Laboratory, UPRES EA 4266, SFR FED 4234, University of Franche-Comté, Université Bourgogne Franche-Comté (UBFC) , Besançon, France
| | - Wasim Abbas
- Pathogens & Inflammation/EPILAB Laboratory, UPRES EA 4266, SFR FED 4234, University of Franche-Comté, Université Bourgogne Franche-Comté (UBFC) , Besançon, France
| | - Amit Kumar
- Pathogens & Inflammation/EPILAB Laboratory, UPRES EA 4266, SFR FED 4234, University of Franche-Comté, Université Bourgogne Franche-Comté (UBFC) , Besançon, France
| | - Frank Verhoeven
- Pepite EA4267, Université Bourgogne Franche-Comté (UBFC) , Besançon, France.,Department of Rheumatology, CHRU Besançon , Besançon, France
| | - Clément Prati
- Pepite EA4267, Université Bourgogne Franche-Comté (UBFC) , Besançon, France.,Department of Rheumatology, CHRU Besançon , Besançon, France
| | - Daniel Wendling
- Pathogens & Inflammation/EPILAB Laboratory, UPRES EA 4266, SFR FED 4234, University of Franche-Comté, Université Bourgogne Franche-Comté (UBFC) , Besançon, France.,Department of Rheumatology, CHRU Besançon , Besançon, France
| | - Céline Demougeot
- Pepite EA4267, Université Bourgogne Franche-Comté (UBFC) , Besançon, France
| | - Georges Herbein
- Pathogens & Inflammation/EPILAB Laboratory, UPRES EA 4266, SFR FED 4234, University of Franche-Comté, Université Bourgogne Franche-Comté (UBFC) , Besançon, France.,Department of Virology, CHRU Besançon , Besançon, France
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8
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Gacaferi H, Mimpen JY, Baldwin MJ, Snelling SJB, Nelissen RGHH, Carr AJ, Dakin SG. The potential roles of high mobility group box 1 (HMGB1) in musculoskeletal disease: A systematic review. TRANSLATIONAL SPORTS MEDICINE 2020. [DOI: 10.1002/tsm2.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hamez Gacaferi
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS) Botnar Research Centre University of Oxford Oxford UK
- Department of Orthopaedics Leiden University Medical Centre Leiden The Netherlands
| | - Jolet Y. Mimpen
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS) Botnar Research Centre University of Oxford Oxford UK
| | - Mathew J. Baldwin
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS) Botnar Research Centre University of Oxford Oxford UK
| | - Sarah J. B. Snelling
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS) Botnar Research Centre University of Oxford Oxford UK
| | | | - Andrew J. Carr
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS) Botnar Research Centre University of Oxford Oxford UK
| | - Stephanie G. Dakin
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS) Botnar Research Centre University of Oxford Oxford UK
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9
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Song Y, Zou X, Zhang D, Liu S, Duan Z, Liu L. Self-enforcing HMGB1/NF-κB/HIF-1α Feedback Loop Promotes Cisplatin Resistance in Hepatocellular Carcinoma Cells. J Cancer 2020; 11:3893-3902. [PMID: 32328193 PMCID: PMC7171489 DOI: 10.7150/jca.42944] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 03/27/2020] [Indexed: 12/16/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is ranked the sixth most common cancer and the fourth leading cause of cancer-related death worldwide, and its incidence is expected to increase in the future. Cisplatin has been widely used in chemotherapy and transarterial chemoembolization in treatment for HCC. However, the main obstacle to the clinical use of cisplatin is the development of resistance, the mechanisms of which are poorly defined. Therefore, it is imperative to investigate the cellular mechanisms mediating cisplatin resistance in HCC. Here, we demonstrated that high mobility group box 1 (HMGB1) is upregulated in patients with cancer, and implicated in a tumor-supportive role. Further, we showed that HMGB1 has an important role in mediating cisplatin resistance via an HMGB1/ nuclear factor kappa-B (NF-κB)/ hypoxia inducible factor-1α (HIF-1α) feedback loop. The study findings reveal an unappreciated molecular mechanism of HMGB1-mediated cisplatin resistance and may provide a new clue in cancer therapy.
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Affiliation(s)
- Yang Song
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Xuejing Zou
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Dongyan Zhang
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Shanshan Liu
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Zhijiao Duan
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Li Liu
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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10
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Kim HY, Park SY, Lee SW, Lee HR, Lee WS, Rhim BY, Hong KW, Kim CD. Retraction: Inhibition of HMGB1-Induced Angiogenesis by Cilostazol via SIRT1 Activation in Synovial Fibroblasts from Rheumatoid Arthritis. PLoS One 2020; 15:e0230889. [PMID: 32191778 PMCID: PMC7082004 DOI: 10.1371/journal.pone.0230889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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11
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Ribatti D, Tamma R. Epigenetic control of tumor angiogenesis. Microcirculation 2020; 27:e12602. [PMID: 31863494 DOI: 10.1111/micc.12602] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/22/2019] [Accepted: 12/16/2019] [Indexed: 12/17/2022]
Abstract
The term "epigenetic" is used to refer to heritable alterations in chromatin that are not due to changes in DNA sequence. Different growth factors and vascular genes mediate the angiogenic process, which is regulated by epigenetic states of genes. The aim of this article is to analyze the role of epigenetic mechanisms in the control and regulation of tumor angiogenetic processes. The reversibility of epigenetic events in contrast to genetic aberrations makes them potentially suitable for therapeutic intervention. In this context, DNA methyltransferase (DNMT) and HDAC inhibitors indirectly-via the tumor cells-exhibit angiostatic effects in vivo, and inhibition of miRNAs can contribute to the development of novel anti-angiogenesis therapies.
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Affiliation(s)
- Domenico Ribatti
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy
| | - Roberto Tamma
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy
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12
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Fromm S, Cunningham CC, Dunne MR, Veale DJ, Fearon U, Wade SM. Enhanced angiogenic function in response to fibroblasts from psoriatic arthritis synovium compared to rheumatoid arthritis. Arthritis Res Ther 2019; 21:297. [PMID: 31864394 PMCID: PMC6925847 DOI: 10.1186/s13075-019-2088-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 12/12/2019] [Indexed: 12/12/2022] Open
Abstract
Introduction Angiogenesis is an early event in the pathogenesis of both psoriatic arthritis (PsA) and rheumatoid arthritis (RA); however, there are striking differences in blood vessel morphology and activation between the two arthropathies. The aim of this study was to assess if the PsA and RA joint microenvironments differentially regulate endothelial cell function. Methods PsA and RA primary synovial fibroblasts (SFC) were isolated from synovial biopsies, grown to confluence, and supernatants harvested and termed ‘conditioned media’ (CM). Human umbilical vein endothelial cells (HUVEC) were cultured with PsA SFC or RA SFC-CM (20%). HUVEC tube formation, migration, and PBMC adhesion were assessed by matrigel tube formation, wound repair, and PBMC adhesion assays. HUVEC cell surface expression of ICAM, VCAM, and E-Selectin was assessed by flow cytometry. Transcriptome analysis of genes promoting angiogenesis was performed by real-time PCR. Finally, a MSD multiplex angiogenic assay was performed on PsA SFC and RA SFC supernatants. Results Macroscopic synovitis and vascularity were similar in PsA and RA patients; however, significant differences in vascular morphological pattern were recorded with tortuous, elongated vessels observed in PsA compared to straight regular branching vessels observed in RA. Transcriptome analysis showed strong upregulation of the pro-angiogenic signature in HUVEC primed with PsA SFC-CM compared to RA SFC-CM and basal control. In parallel, paired PsA SFC-CM significantly induced HUVEC tube formation compared to that of RA SFC-CM. Furthermore, PsA SFC-CM induced HUVEC migration was paralleled by a significant induction in VEGFA, PFKFB3, ICAM-1, and MMP3 mRNA expression. A significant increase in PBMC adhesion and cell surface expression of VCAM-1, ICAM-1, and E-Selectin expression was also demonstrated in PsA SFC-CM-primed HUVEC compared to RA SFC-CM. Finally, VEGF, TSLP, Flt-1, and Tie-2 expression was elevated in PsA SFC-CM compared to RA SFC-CM, with no significant difference in other pro-angiogenic mediators including MIP-3, bFGF, PIGF, and MCP-1. Conclusion PsA SFC and RA SFC secreted factors differentially regulate endothelial cell function, with soluble mediators in the PsA joint microenvironment inducing a more pro-angiogenic phenotype compared to the RA.
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Affiliation(s)
- S Fromm
- Department of Molecular Rheumatology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - C C Cunningham
- Department of Molecular Rheumatology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - M R Dunne
- Department of Surgery, Trinity Translational Medicine Institute, St. James's Hospital, Trinity College Dublin, Dublin, Ireland
| | - D J Veale
- Rheumatology EULAR Centre of Excellence, Centre for Arthritis & Rheumatic Diseases, University College Dublin, Dublin, Ireland
| | - U Fearon
- Department of Molecular Rheumatology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.
| | - S M Wade
- Department of Molecular Rheumatology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,Rheumatology EULAR Centre of Excellence, Centre for Arthritis & Rheumatic Diseases, University College Dublin, Dublin, Ireland
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Gorgulho CM, Romagnoli GG, Bharthi R, Lotze MT. Johnny on the Spot-Chronic Inflammation Is Driven by HMGB1. Front Immunol 2019; 10:1561. [PMID: 31379812 PMCID: PMC6660267 DOI: 10.3389/fimmu.2019.01561] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 06/24/2019] [Indexed: 12/24/2022] Open
Abstract
Although much has been made of the role of HMGB1 acting as an acute damage associated molecular pattern (DAMP) molecule, prompting the response to tissue damage or injury, it is also released at sites of chronic inflammation including sites of infection, autoimmunity, and cancer. As such, the biology is distinguished from homeostasis and acute inflammation by the recruitment and persistence of myeloid derived suppressor cells, T regulatory cells, fibrosis and/or exuberant angiogenesis depending on the antecedents and the other individual inflammatory partners that HMGB1 binds and focuses, including IL-1β, CXCL12/SDF1, LPS, DNA, RNA, and sRAGE. High levels of HMGB1 released into the extracellular milieu and its persistence in the microenvironment can contribute to the pathogenesis of many if not all autoimmune disorders and is a key factor that drives inflammation further and worsens symptoms. HMGB1 is also pivotal in the maintenance of chronic inflammation and a “wound healing” type of immune response that ultimately contributes to the onset of carcinogenesis and tumor progression. Exosomes carrying HMGB1 and other instructive molecules are released and shape the response of various cells in the chronic inflammatory environment. Understanding the defining roles of REDOX, DAMPs and PAMPs, and the host response in chronic inflammation requires an alternative means for positing HMGB1's central role in limiting and focusing inflammation, distinguishing chronic from acute inflammation.
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Affiliation(s)
- Carolina M Gorgulho
- Tumor Immunology Laboratory, Department of Microbiology and Immunology, Botucatu Institute of Biosciences, São Paulo State University, Botucatu, Brazil.,DAMP Laboratory, Department of Surgery, Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA, United States
| | - Graziela G Romagnoli
- Tumor Immunology Laboratory, Department of Microbiology and Immunology, Botucatu Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Rosh Bharthi
- DAMP Laboratory, Department of Surgery, Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA, United States
| | - Michael T Lotze
- DAMP Laboratory, Department of Surgery, Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Immunology, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States
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14
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Mohammad G, Abdelaziz GM, Siddiquei MM, Ahmad A, De Hertogh G, Abu El-Asrar AM. Cross-Talk between Sirtuin 1 and the Proinflammatory Mediator High-Mobility Group Box-1 in the Regulation of Blood-Retinal Barrier Breakdown in Diabetic Retinopathy. Curr Eye Res 2019; 44:1133-1143. [PMID: 31136205 DOI: 10.1080/02713683.2019.1625406] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Purpose: High-mobility group box-1 (HMGB1) mediates inflammation and breakdown of blood-retinal barrier (BRB) in diabetic retina. Sirtuin-1 (SIRT1) has protective effects against inflammation and oxidative stress. The aim of this study was to investigate the interaction between HMGB1 and SIRT1 in regulating BRB breakdown in diabetic retina. Methods: BRB breakdown was assessed in vivo with fluorescein isothiocyanate-conjugated dextran. Vitreous samples from 47 proliferative diabetic retinopathy (PDR) and 19 nondiabetic patients, and epiretinal membranes from 13 patients with PDR were studied by enzyme-linked immunosorbent assay and immunohistochemistry. Retinas from 4-week diabetic rats and from normal rats intravitreally injected with HMGB1 were studied by spectrophotometric assay, Western blot analysis, and RT-PCR. We also studied the effect of the HMGB1 inhibitor glycyrrhizin and the SIRT1 activator resveratrol on diabetes-induced biochemical changes in the retina. Results: HMGB1 levels in vitreous samples from PDR patients were significantly higher than in nondiabetic controls, whereas SIRT1 levels were significantly lower in vitreous samples from patients with inactive PDR than those in patients with active PDR and nondiabetic controls. In epiretinal membranes, SIRT1 was expressed in vascular endothelial cells and stromal cells. Diabetes and intravitreal injection of HMGB1 in normal rats downregulated SIRT1expression, whereas glycyrrhizin and resveratrol normalized diabetes-induced downregulation of SIRT1. Resveratrol significantly attenuated diabetes-induced downregulation of occludin and upregulation of HMGB1 and receptor for advanced glycation end products in the retina and breakdown of BRB. Conclusions: Our findings suggest that a functional link between SIRT1 and HMGB1 is involved in regulating of BRB breakdown in diabetic retina.
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Affiliation(s)
- Ghulam Mohammad
- Department of Ophthalmology, College of Medicine, King Saud University , Riyadh , Saudi Arabia.,Dr. Nasser Al-Rashid Research Chair in Ophthalmology , Riyadh , Saudi Arabia
| | - Ghada Maher Abdelaziz
- Department of Ophthalmology, College of Medicine, King Saud University , Riyadh , Saudi Arabia
| | - Mohammad Mairaj Siddiquei
- Department of Ophthalmology, College of Medicine, King Saud University , Riyadh , Saudi Arabia.,Dr. Nasser Al-Rashid Research Chair in Ophthalmology , Riyadh , Saudi Arabia
| | - Ajmal Ahmad
- Department of Ophthalmology, College of Medicine, King Saud University , Riyadh , Saudi Arabia.,Dr. Nasser Al-Rashid Research Chair in Ophthalmology , Riyadh , Saudi Arabia
| | - Gert De Hertogh
- Laboratory of Histochemistry and Cytochemistry, University of Leuven , KU Leuven , Leuven , Belgium
| | - Ahmed M Abu El-Asrar
- Department of Ophthalmology, College of Medicine, King Saud University , Riyadh , Saudi Arabia.,Dr. Nasser Al-Rashid Research Chair in Ophthalmology , Riyadh , Saudi Arabia
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15
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High-mobility group box-1 inhibition stabilizes intestinal permeability through tight junctions in experimental acute necrotizing pancreatitis. Inflamm Res 2019; 68:677-689. [DOI: 10.1007/s00011-019-01251-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 05/22/2019] [Accepted: 05/24/2019] [Indexed: 02/07/2023] Open
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16
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Li YJ, Wang L, Zhang B, Gao F, Yang CM. Glycyrrhizin, an HMGB1 inhibitor, exhibits neuroprotective effects in rats after lithium-pilocarpine-induced status epilepticus. J Pharm Pharmacol 2018; 71:390-399. [PMID: 30417405 DOI: 10.1111/jphp.13040] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 10/19/2018] [Indexed: 01/22/2023]
Abstract
Abstract
Objectives
It has been proven that extracellular HMGB1 is involved in progression of neurologic disorders, such as stroke, traumatic brain injury, meningitis and epilepsy. Glycyrrhizin (GL) is a direct inhibitor of HMGB1, and blocks HMGB1 release into the extracellular. We aim in this study to investigate the neuroprotective effects of GL in a rat model after lithium-pilocarpine-induced status epilepticus (SE).
Methods
Adult male SD rats were divided into three groups: Sham group, SE-group and (SE + GL)-treated group. The HMGB1 expression in serum and hippocampus, the damage extent of blood brain barrier (BBB) and hippocampal neuronal damage were evaluated by enzyme-linked immunosorbent assay, immunohistochemistry, western blot and nissl's staining.
Key findings
Glycyrrhizin markedly reduced HMGB1 expression in serum and hippocampus, prevented HMGB1 translocation from nucleus to cytoplasm in hippocampal CA1, CA3 and hilus areas of SE rats. Meanwhile, GL significantly ameliorated neuronal damage in the CA1, CA3 and hilus areas of hippocampus, and protected BBB disruption after SE. The administration of GL significantly decreased the mortality from 25 to 8.9% in rats.
Conclusions
Glycyrrhizin may exert neuroprotective effects via inhibiting HMGB1 and protect BBB permeability in lithium-pilocarpine-induced rats with SE.
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Affiliation(s)
- Ya-jun Li
- Department of Neurology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Lin Wang
- Department of Neurology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Bei Zhang
- Department of Neurology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Fei Gao
- Department of Neurology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Chun-Mei Yang
- Department of Neurology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
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17
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Xu D, Zhu H, Fu Q, Xu S, Sun W, Chen G, Lv X. Ketamine delays progression of oxidative and damaged cataract through regulating HMGB-1/NF-κB in lens epithelial cells. Immunopharmacol Immunotoxicol 2018; 40:303-308. [PMID: 30111205 DOI: 10.1080/08923973.2018.1478851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Dong Xu
- Department of Ophthalmology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Hongying Zhu
- Department of Ophthalmology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Qingdong Fu
- Department of Ophthalmology, Hangzhou Westlake Chaoju Ophthalmic Hospital, Hangzhou, Zhejiang, China
| | - Songxiao Xu
- Department of Pathology, Sir Run Run Shaw Hospital affiliated to Zhejiang University, Hangzhou, Zhejiang, China
| | - Wen Sun
- Department of Ophthalmology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Guoxiao Chen
- Department of Ophthalmology, First Affiliated Hospital of Zhejiang University, Hangzhou, Zhejiang, China
| | - Xiaoli Lv
- Department of Ophthalmology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
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18
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Kabil SL. Beneficial effects of cilostazol on liver injury induced by common bile duct ligation in rats: Role of SIRT1 signaling pathway. Clin Exp Pharmacol Physiol 2018; 45:1341-1350. [DOI: 10.1111/1440-1681.13004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 06/19/2018] [Accepted: 06/19/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Soad L. Kabil
- Department of Pharmacology; Faculty of Medicine; Zagazig University; Zagazig Egypt
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19
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Bale S, Venkatesh P, Sunkoju M, Godugu C. An Adaptogen: Withaferin A Ameliorates in Vitro and in Vivo Pulmonary Fibrosis by Modulating the Interplay of Fibrotic, Matricelluar Proteins, and Cytokines. Front Pharmacol 2018; 9:248. [PMID: 29623041 PMCID: PMC5874319 DOI: 10.3389/fphar.2018.00248] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 03/06/2018] [Indexed: 12/16/2022] Open
Abstract
Pulmonary fibrosis (PF) is chronic lung disease with only two FDA approved clinically available drugs, with limited safety profile. Inadequate therapy motivated us to explore the effect of vimentin inhibitor Withaferin A, as an anti-fibrotic agent against TGF-β1-induced in vitro fibrotic events and Bleomycin induced in vivo fibrosis with an emphasis on epithelial to mesenchymal transition (EMT), extracellular matrix deposition (ECM), inflammation, and angiogenesis. In vitro EMT and fibrotic events were induced by TGF-β1 in alveolar epithelial cells and human fetal lung fibroblasts followed by treatment with Withaferin A (0.25, 0.5, and 1 μM concentrations) to explore its anti-fibrotic effects. In vivo potential of Withaferin A (2 and 4 mg/kg) was assessed in murine model of Bleomycin induced PF. All the parameters and molecular studies related to PF were performed at the end of treatment period. Withaferin A treatment reduced the progression of PF by modulating the EMT related cell markers both in vivo and in vitro. Withaferin A ameliorated the expression of inflammatory cytokines including NF-κB p65, IL-1β and TNF-α, as well as attenuated the expression of pro-fibrotic proteins including CTGF, collagen 1A2, collagen 3A1, and fibronectin. Expression of angiogenic factors like VEGF, FAK, p38 MAPK, and PLC-γ1 were also inhibited by Withaferin A. Phosphorylation of Smad 2/3 induced by TGF-β1 and Bleomycin were significantly inhibited. Withaferin A suppressed expression of pro-inflammatory, pro-fibrotic, and pro-angiogenic mediators and also reduced the ECM deposition. In a nutshell, Withaferin A could probably prove as an efficient and potential therapeutic against PF.
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Affiliation(s)
- Swarna Bale
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, India
| | - Pooladanda Venkatesh
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, India
| | - Manoj Sunkoju
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, India
| | - Chandraiah Godugu
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, India
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20
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Ai J, Chen Y, Peng X, Ji Y, Xi Y, Shen Y, Yang X, Su Y, Sun Y, Gao Y, Ma Y, Xiong B, Shen J, Ding J, Geng M. Preclinical Evaluation of SCC244 (Glumetinib), a Novel, Potent, and Highly Selective Inhibitor of c-Met in MET-dependent Cancer Models. Mol Cancer Ther 2017; 17:751-762. [DOI: 10.1158/1535-7163.mct-17-0368] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 07/27/2017] [Accepted: 11/30/2017] [Indexed: 11/16/2022]
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21
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Fahmy-Garcia S, van Driel M, Witte-Buoma J, Walles H, van Leeuwen JPTM, van Osch GJVM, Farrell E. NELL-1, HMGB1, and CCN2 Enhance Migration and Vasculogenesis, But Not Osteogenic Differentiation Compared to BMP2. Tissue Eng Part A 2017; 24:207-218. [PMID: 28463604 DOI: 10.1089/ten.tea.2016.0537] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Currently, autografts still represent the gold standard treatment for the repair of large bone defects. However, these are associated with donor-site morbidity and increased pain, cost, and recovery time. The ideal therapy would use biomaterials combined with bone growth factors to induce and instruct bone defect repair without the need to harvest patient tissue. In this line, bone morphogenetic proteins (BMPs) have been the most extensively used agents for clinical bone repair, but at supraphysiological doses that are not without risk. Because of the need to eliminate the risks of BMP2 use in vivo, we assessed the ability of three putative osteogenic factors, nel-like molecule type 1 (NELL-1), high mobility group box 1 (HMGB1), and CCN2, to enhance the essential processes for bone defect repair in vitro and compared them to BMP2. Although it has been reported that NELL-1, HMGB1, and CCN2 play a role in bone formation, less is known about the contribution of these proteins to the different events involved, such as cell migration, osteogenesis, and vasculogenesis. In this study, we investigated the effects of different doses of NELL-1, HMGB, CCN2, and BMP2 on these three processes as a model for the recruitment and differentiation of resident cells in the in vivo bone defect repair situation, using cells of human origin. Our data demonstrated that NELL-1, HMGB1, and CCN2 significantly induced mesenchymal stem cell migration (from 1.58-fold increase compared to control), but BMP2 did not. Interestingly, only BMP2 increased osteogenesis in marrow stromal cells, whereas it inhibited osteogenesis in preosteoblasts. Moreover, the four proteins studied promoted significantly endothelial cell migration, reaching a maximum of 2.4-fold increase compared to control, and induced formation of tube-like structures. NELL-1, HMGB1, and CCN2 had these effects at relatively low doses compared to BMP2. This work indicates that NELL-1, HMGB1, and CCN2 might enhance bone defect healing via the recruitment of endogenous cells and induction of vascularization and act via different processes than BMP2.
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Affiliation(s)
| | | | - Janneke Witte-Buoma
- 3 Department of Oral and Maxillofacial Surgery, Erasmus MC , Rotterdam, The Netherlands
| | - Heike Walles
- 4 Department Tissue Engineering and Regenerative Medicine, University Hospital Würzburg , Würzburg, Germany
| | | | - Gerjo J V M van Osch
- 1 Department of Orthopaedics, Erasmus MC , Rotterdam, The Netherlands .,5 Otorhinolaryngology Department, Erasmus MC, Rotterdam, The Netherlands
| | - Eric Farrell
- 3 Department of Oral and Maxillofacial Surgery, Erasmus MC , Rotterdam, The Netherlands
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22
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Matkar PN, Ariyagunarajah R, Leong-Poi H, Singh KK. Friends Turned Foes: Angiogenic Growth Factors beyond Angiogenesis. Biomolecules 2017; 7:biom7040074. [PMID: 28974056 PMCID: PMC5745456 DOI: 10.3390/biom7040074] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 09/15/2017] [Accepted: 09/22/2017] [Indexed: 12/13/2022] Open
Abstract
Angiogenesis, the formation of new blood vessels from pre-existing ones is a biological process that ensures an adequate blood flow is maintained to provide the cells with a sufficient supply of nutrients and oxygen within the body. Numerous soluble growth factors and inhibitors, cytokines, proteases as well as extracellular matrix proteins and adhesion molecules stringently regulate the multi-factorial process of angiogenesis. The properties and interactions of key angiogenic molecules such as vascular endothelial growth factors (VEGFs), fibroblast growth factors (FGFs) and angiopoietins have been investigated in great detail with respect to their molecular impact on angiogenesis. Since the discovery of angiogenic growth factors, much research has been focused on their biological actions and their potential use as therapeutic targets for angiogenic or anti-angiogenic strategies in a context-dependent manner depending on the pathologies. It is generally accepted that these factors play an indispensable role in angiogenesis. However, it is becoming increasingly evident that this is not their only role and it is likely that the angiogenic factors have important functions in a wider range of biological and pathological processes. The additional roles played by these molecules in numerous pathologies and biological processes beyond angiogenesis are discussed in this review.
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Affiliation(s)
- Pratiek N Matkar
- Division of Cardiology, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, ON M5B 1W8, Canada.
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | | | - Howard Leong-Poi
- Division of Cardiology, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, ON M5B 1W8, Canada.
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | - Krishna K Singh
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada.
- Division of Vascular Surgery, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, ON M5B 1W8, Canada.
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON M5S 1A8, Canada.
- Department of Surgery, University of Toronto, Toronto, ON M5S 1A8, Canada.
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23
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Hao L, Wan Y, Xiao J, Tang Q, Deng H, Chen L. A study of Sirt1 regulation and the effect of resveratrol on synoviocyte invasion and associated joint destruction in rheumatoid arthritis. Mol Med Rep 2017; 16:5099-5106. [PMID: 28849139 PMCID: PMC5647035 DOI: 10.3892/mmr.2017.7299] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Accepted: 03/17/2017] [Indexed: 12/16/2022] Open
Abstract
The aim of the current study was to investigate the role and mechanism of sirtuin 1 (Sirt1) in the regulation of synovial cell invasion and joint destruction in rheumatoid arthritis (RA). The Sirt1 protein and mRNA levels in fibroblast‑like synoviocytes (FLS) isolated from RA synovial tissues were compared with normal tissues by western blot and reverse transcription‑polymerase chain reaction. RA FLS were then treated with the Sirt1 agonist resveratrol (1, 3 and 10 µg/ml) for 48 h, and their invasiveness and expression of matrix metalloproteinase (MMP) 1 and MMP13 protein and mRNA were measured. Furthermore, a collagen‑induced arthritis (CIA) rat model was established and the rats were divided into a model group, and low‑ and high‑dose resveratrol (2.5 and 10 mg/kg/day) groups to receive an intraperitoneal injection of resveratrol for 42 consecutive days. The joint morphology, arthritis index (AI), and MMP1 and MMP13 expression in synovial tissues was monitored. The Sirt1 protein and mRNA levels in RA FLS were significantly lower compared with normal FLS (P<0.01). The resveratrol treatment significantly inhibited the invasive ability of RA FLS (P<0.01) and reduced MMP1 and MMP13 expression (P<0.01). The AI in low‑ and high‑dose groups was significantly lower compared with the model group from day 28 (P<0.01). Resveratrol also reduced the swelling and damage and decreased MMP1 and MMP13 expression levels in CIA rats (P<0.01). The resveratrol‑induced upregulation of Sirt1 in RA FLS may significantly inhibit the invasion of these cells and reduce the degree of joint damage, which may be mediated through the inhibition of MMP1 and MMP13 expression. The present results suggested a regulatory role for Sirt1 in RA pathogenesis, and demonstrated the beneficial effects of resveratrol, which may have potential as an alternative therapeutic strategy for the treatment of patients with RA.
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Affiliation(s)
- Liang Hao
- Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 300006, P.R. China
| | - Yuying Wan
- Department of Infection Control, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 300006, P.R. China
| | - Juhua Xiao
- Department of Ultrasound, Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Qiang Tang
- Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 300006, P.R. China
| | - Huan Deng
- Department of Pathology, The Fourth Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Lu Chen
- Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 300006, P.R. China
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24
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Park SY, Lee SW, Lee SY, Hong KW, Bae SS, Kim K, Kim CD. SIRT1/Adenosine Monophosphate-Activated Protein Kinase α Signaling Enhances Macrophage Polarization to an Anti-inflammatory Phenotype in Rheumatoid Arthritis. Front Immunol 2017; 8:1135. [PMID: 28966618 PMCID: PMC5605563 DOI: 10.3389/fimmu.2017.01135] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 08/29/2017] [Indexed: 12/29/2022] Open
Abstract
Macrophages are crucially involved in the pathogenesis of rheumatoid arthritis (RA). Macrophages of the M1 phenotype act as pro-inflammatory mediators in synovium, whereas those of the M2 phenotype suppress inflammation and promote tissue repair. SIRT1 is a class 3 histone deacetylase with anti-inflammatory characteristics. However, the role played by SIRT1 in macrophage polarization has not been defined in RA. We investigated whether SIRT1 exerts anti-inflammatory effects by modulating M1/M2 polarization in macrophages from RA patients. In this study, SIRT1 activation promoted the phosphorylation of an adenosine monophosphate-activated protein kinase (AMPK) α/acetyl-CoA carboxylase in macrophages exposed to interleukin (IL)-4, and that this resulted in the expressions of M2 genes, including MDC, FcεRII, MrC1, and IL-10, at high levels. Furthermore, these expressions were inhibited by sirtinol (an inhibitor of SIRT1) and compound C (an inhibitor of AMPK). Moreover, SIRT1 activation downregulated LPS/interferon γ-mediated NF-κB activity by inhibiting p65 acetylation and the expression of M1 genes, such as CCL2, iNOS, IL-12 p35, and IL-12 p40. Macrophages from SIRT1 transgenic (Tg)-mice exhibited enhanced polarization of M2 phenotype macrophages and reduced polarization of M1 phenotype macrophages. In line with these observations, SIRT1-Tg mice showed less histological signs of arthritis, that is, lower TNFα and IL-1β expressions and less severe arthritis in the knee joints, compared to wild-type mice. Taken together, the study shows activation of SIRT1/AMPKα signaling exerts anti-inflammatory activities by regulating M1/M2 polarization, and thereby reduces inflammatory responses in RA. Furthermore, it suggests that SIRT1 signaling be viewed as a therapeutic target in RA.
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Affiliation(s)
- So Youn Park
- Department of Pharmacology, School of Medicine, Pusan National University, Gyeongsangnam-do, South Korea.,Gene and Cell Therapy Research Center for Vessel-Associated Diseases, Pusan National University, Gyeongsangnam-do, South Korea
| | - Sung Won Lee
- Department of Internal Medicine, College of Medicine, Dong-A University, Busan, South Korea
| | - Sang Yeob Lee
- Department of Internal Medicine, College of Medicine, Dong-A University, Busan, South Korea
| | - Ki Whan Hong
- Gene and Cell Therapy Research Center for Vessel-Associated Diseases, Pusan National University, Gyeongsangnam-do, South Korea
| | - Sun Sik Bae
- Department of Pharmacology, School of Medicine, Pusan National University, Gyeongsangnam-do, South Korea.,Gene and Cell Therapy Research Center for Vessel-Associated Diseases, Pusan National University, Gyeongsangnam-do, South Korea
| | - Koanhoi Kim
- Department of Pharmacology, School of Medicine, Pusan National University, Gyeongsangnam-do, South Korea
| | - Chi Dae Kim
- Department of Pharmacology, School of Medicine, Pusan National University, Gyeongsangnam-do, South Korea.,Gene and Cell Therapy Research Center for Vessel-Associated Diseases, Pusan National University, Gyeongsangnam-do, South Korea
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25
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Sirt1 ameliorates systemic sclerosis by targeting the mTOR pathway. J Dermatol Sci 2017; 87:149-158. [PMID: 28532580 DOI: 10.1016/j.jdermsci.2017.04.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 03/26/2017] [Accepted: 04/25/2017] [Indexed: 01/17/2023]
Abstract
BACKGROUND Systemic sclerosis (SSc) is a chronic autoimmune disease characterized by inflammation and fibrosis. Our previous research has indicated that Sirtuin1 (Sirt1) plays a role in the regulation of TNF-α-induced inflammation; however, whether Sirt1 may inhibit the progress of SSc by blocking inflammation remains unknown. OBJECTIVE We aimed to investigate the function of Sirt1 in SSc. METHODS The function and its mechanism of Sirt1 were evaluated in fibroblasts or scleroderma mice. The expression of Sirt1 and cytokines was analyzed using real-time PCR, western blot, ELISA and immunohistochemistry. RESULTS We determined that fibroblasts of SSc patients were activated to exhibit inflammation. Sirt1, activated by resveratrol (Res), ameliorated cutaneous inflammation and fibrosis in bleomycin (BLM)-induced scleroderma mice. An improvement in mammalian target of rapamycin (mTOR) was identified in the fibroblasts of SSc patients and the skin lesions of BLM mice. Rapamycin, an mTOR specific inhibitor, substantially inhibited the induced inflammation and fibrosis. The enhancement of mTOR expression in the skin lesions of the BLM-treated mice was significantly inhibited by Sirt1 activation. However, in both the BLM-treated cells and mice, Res exerted an inhibitory function on the expression of inflammatory factors, and collagen was diminished following mTOR knockdown. These findings suggest that Res may inhibit inflammation and fibrosis via mTOR. CONCLUSION The modulation of Sirt1 activity may represent a potential therapeutic method for SSc. The mechanism may involve the inhibition of mTOR phosphorylation, whereas mTOR activity was shown to be a pathogenic culprit of SSc.
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26
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Cai F, Li J, Liu Y, Zhang Z, Hettiarachchi DS, Li D. Effect of ximenynic acid on cell cycle arrest and apoptosis and COX-1 in HepG2 cells. Mol Med Rep 2016; 14:5667-5676. [PMID: 27840952 DOI: 10.3892/mmr.2016.5920] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 07/22/2016] [Indexed: 11/06/2022] Open
Abstract
Ximenynic acid is a conjugated enyne fatty acid, which is currently of interest due to its anti-inflammatory activity. Due to the association between inflammation and cancer, the present study was designed to investigate the anti‑cancer activity of ximenynic acid in the HepG2 human hepatoma cell line and the underlying mechanisms. The current study demonstrated the anti‑proliferation and pro‑apoptosis activities of ximenynic acid by cell viability assay and flow cytometry analysis. The expression of anti‑apoptosis protein silent information regulator T1 (SIRT1) was significantly suppressed by ximenynic acid. Furthermore, ximenynic acid blocked G1/S phase transition by inhibiting the protein expression of the cell cycle‑associated protein general control of amino acid synthesis yeast homolog like 2 (GCN5L2), and the mRNA expression of cyclin D3 and cyclin E1. Furthermore, ximenynic acid suppressed the expression of angiogenesis‑associated genes, including vascular endothelial growth factor (VEGF)‑B and VEGF‑C. Finally, ximenynic acid significantly inhibited the expression of cyclooxygenase‑1 (COX‑1) mRNA and protein, however COX‑2 expression was not reduced. The results of the present study suggested that ximenynic acid may inhibit growth of HepG2 cells by selective inhibition of COX‑1 expression, which leads to cell cycle arrest, and alters the apoptosis pathway and expression of angiogenic factors. The current study aimed to investigate whether ximenynic acid might be developed as novel anticancer agent.
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Affiliation(s)
- Fang Cai
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, Zhejiang 310058, P.R. China
| | - Jianying Li
- Institute of Developmental and Regenerative Biology, Hangzhou Normal University, Hangzhou, Zhejiang 310000, P.R. China
| | - Yandi Liu
- School of Pharmacy, Curtin Health Innovation Research Institute, Curtin University, Perth 02042G, Australia
| | - Zunyi Zhang
- Institute of Developmental and Regenerative Biology, Hangzhou Normal University, Hangzhou, Zhejiang 310000, P.R. China
| | - D S Hettiarachchi
- School of Pharmacy, Curtin Health Innovation Research Institute, Curtin University, Perth 02042G, Australia
| | - Duo Li
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, Zhejiang 310058, P.R. China
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Wang JX, Yu HL, Bei SS, Cui ZH, Li ZW, Liu ZJ, Lv YF. Association of HMGB1 Gene Polymorphisms with Risk of Colorectal Cancer in a Chinese Population. Med Sci Monit 2016; 22:3419-3425. [PMID: 27665685 PMCID: PMC5040220 DOI: 10.12659/msm.896693] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Background Colorectal cancer (CRC) is one of the leading causes of cancer-related deaths worldwide. More advanced work is required in the detection of biomarkers for CRC susceptibility and prognosis. High-mobility group box-1 (HMGB1) is an angiogenesis-related gene reported to be associated with the development of CRC. The direct evidence of HMGB1 gene polymorphisms as biomarkers for CRC has not been reported previously. Material/Methods A total of 240 CRC patients and 480 healthy controls were periodically enrolled. DNA was extracted from blood specimens. The distributions of SNPs of HMGB1 were determined by using the polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) assay. Results In this case-control study, we observed a significant association between overall CRC risk and SNP rs2249825 (CG vs. CC and GG vs. CC). Participants carrying both rs2249825 CG (OR, 2.67; 95% CI, 1.89 to 3.78) and rs2249825 GG genotypes (OR, 2.32; 95% CI, 1.13 to 4.73) had a significantly increased risk of developing CRC compared to those carrying GG genotype. rs2249825 was associated with the risk of CRC in the dominant model but not in the recessive model. However, we found no significant differences in the rs1412125 or rs1045411 polymorphisms in the HMGB1. Advanced analyses showed that the number of rs2249825 G alleles showed a significant relationship with risk of CRC. Conclusions Our results show an association between HMGB1 rs2249825 SNP and CRC incidence in the Chinese Han population. However, population-based studies with more subjects and prognostic effects are needed to verify the association of HMGB1 SNPs with CRC susceptibility, severity, and long-term prognosis.
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Affiliation(s)
- Jian-Xin Wang
- Department of Anoproctology, The Second Hospital of Shandong University, Jinan, Shandong, China (mainland)
| | - Hua-Long Yu
- Department of Anoproctology, The Second Hospital of Shandong University, Jinan, Shandong, China (mainland)
| | - Shao-Sheng Bei
- Department of Anoproctology, The Second Hospital of Shandong University, Jinan, Shandong, China (mainland)
| | - Zhen-Hua Cui
- Department of Anoproctology, The Second Hospital of Shandong University, Jinan, Shandong, China (mainland)
| | - Zhi-Wen Li
- Department of Anoproctology, The Second Hospital of Shandong University, Jinan, Shandong, China (mainland)
| | - Zhen-Ji Liu
- Department of Anoproctology, The Second Hospital of Shandong University, Jinan, Shandong, China (mainland)
| | - Yan-Feng Lv
- Department of Anoproctology, The Second Hospital of Shandong University, Jinan, Shandong, China (mainland)
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Methotrexate affects HMGB1 expression in rheumatoid arthritis, and the downregulation of HMGB1 prevents rheumatoid arthritis progression. Mol Cell Biochem 2016; 420:161-70. [PMID: 27522665 DOI: 10.1007/s11010-016-2783-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 08/05/2016] [Indexed: 12/29/2022]
Abstract
High-mobility group box 1 (HMGB1) is associated with the development of rheumatoid arthritis (RA). Recent studies have shown that methotrexate (MTX) may inhibit the expression of HMGB1. This study examined whether HMGB1 might be involved in the treatment of RA using MTX. Synovial tissues were collected from RA patients who were treated with MTX for at least 6 months (RA-MTX group, 7 cases) and from those without MTX treatment (RA-noMTX group, 7 cases). Additionally, patients with osteoarthritis (OA group, 7 cases) were used as controls. The expression and locations of HMGB1 in the tissues were detected using real-time PCR, western blot, and immunohistochemistry. Additionally, OA-fibroblast-like synoviocytes (FLSs) and RA-FLSs were isolated and cultured, and the expression of HMGB1 was reduced in these cells by transfection with HMGB1 siRNA. Cell proliferation, migration, and invasion abilities were detected. Furthermore, the effects of HMGB1 on matrix metalloproteinase (MMP)-2 and MMP-13 were measured using western blot analysis. At the tissue level, HMGB1 expression in synovial membrane did not differ significantly between the OA and RA-MTX groups, but was significantly lower in these groups than in the RA-noMTX group. In cell experiments, the cell doubling time in the RA-FLS HMGB1 siRNA group was significantly extended compared with that in the RA-FLS negative control (NC)-siRNA group. The amount of cell migration and invasion in the RA-FLS HMGB1 siRNA group was significantly lower compared with that in the NC-siRNA group; the MMP-2 and MMP-13 expression levels were also lower. These results showed that MTX reduced HMGB1 expression in RA synovial tissues, and through the downregulation of HMGB1 expression in tissues, MTX may slow disease progression of RA.
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Inflammation and intracellular metabolism: new targets in OA. Osteoarthritis Cartilage 2015; 23:1835-42. [PMID: 26521729 PMCID: PMC4668929 DOI: 10.1016/j.joca.2014.12.016] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 12/17/2014] [Indexed: 02/02/2023]
Abstract
Articular cartilage degeneration is hallmark of osteoarthritis (OA). Low-grade chronic inflammation in the joint can promote OA progression. Emerging evidence indicates that bioenergy sensors couple metabolism with inflammation to switch physiological and clinical phenotypes. Changes in cellular bioenergy metabolism can reprogram inflammatory responses, and inflammation can disturb cellular energy balance and increase cell stress. AMP-activated protein kinase (AMPK) and sirtuin 1 (SIRT1) are two critical bioenergy sensors that regulate energy balance at both cellular and whole-body levels. Dysregulation of AMPK and SIRT1 has been implicated in diverse human diseases and aging. This review reveals recent findings on the role of AMPK and SIRT1 in joint tissue homeostasis and OA, with a focus on how AMPK and SIRT1 in articular chondrocytes modulate intracellular energy metabolism during stress responses (e.g., inflammatory responses) and how these changes dictate specific effector functions, and discusses translational significance of AMPK and SIRT1 as new therapeutic targets for OA.
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Zhao H, Zhang J, Yu J. HMGB-1 as a Potential Target for the Treatment of Diabetic Retinopathy. Med Sci Monit 2015; 21:3062-7. [PMID: 26454330 PMCID: PMC4604733 DOI: 10.12659/msm.894453] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background Diabetic retinopathy (DR) is one of the most important complications of diabetes mellitus (DM) and is the leading cause of blindness in diabetic patients. Recent studies showed that as important inflammatory mediators, high mobility group box 1 (HMGB-1) is associated with diabetic peripheral neuropathy and can participate in the occurrence and development of DR. This study explored HMGB-1 as a therapeutic target for DR treatment through observing its role in retinal ganglion cells (GRCs) in a high glucose environment. Material/Methods RGCs were randomly divided into 3 groups: the normal control group, the high glucose group, and the siRNA HMGB-1 group. Real-time PCR was used to detect HMGB-1 mRNA expression. ELISA was used to test HMGB-1 protein expression in the supernatant. MTT assay was performed to determine cell proliferation. Real-time PCR and Western blotting were used to analyze TLR4 and NF-κB expression. Results HMGB-1 mRNA was up-regulated (P=0.015) and protein secretion increased (P=0.022) in the high glucose environment. RGCs survival decreased (P=0.026), while TLR4 and NF-κB mRNA (P=0.009 and P=0.017, respectively) and protein expression increased significantly (P=0.041 and P=0.024, respectively). SiRNA HMGB-1 transfection obviously inhibited HMGB-1 mRNA expression (P=0.032), reduced HMGB-1 secretion (P=0.012), and decreased TLR4 and NF-κB mRNA (P=0.033 and P=0.024, respectively) and protein expression (P=0.032; P=0.027, respectively). Compared with the high glucose group, the RGCs survival rate increased significantly (P=0.037). Conclusions As a therapeutic target, HMGB-1 can inhibit inflammation and promote RGCs survival to delay DR progress through the HMGB-1-TLR4-NF-κB signaling pathway.
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Affiliation(s)
- Hailan Zhao
- Department of Ophthalmology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China (mainland)
| | - Jingzhuang Zhang
- Department of Ophthalmology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China (mainland)
| | - Jie Yu
- Department of Ophthalmology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China (mainland)
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Suppression of RANKL-induced osteoclast differentiation by cilostazol via SIRT1-induced RANK inhibition. Biochim Biophys Acta Mol Basis Dis 2015; 1852:2137-44. [DOI: 10.1016/j.bbadis.2015.07.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 06/27/2015] [Accepted: 07/08/2015] [Indexed: 11/18/2022]
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Qu W, Wang Y, Wu Q, Liu J, Hao D. Emodin inhibits HMGB1-induced tumor angiogenesis in human osteosarcoma by regulating SIRT1. Int J Clin Exp Med 2015; 8:15054-15064. [PMID: 26628989 PMCID: PMC4658878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Accepted: 07/17/2015] [Indexed: 06/05/2023]
Abstract
UNLABELLED The anti-cancer effects of emodin, including inhibition of proliferation, invasion, metastasis and angiogenesis, were confirmed by various previous studies. However, the specific mechanisms were not clear. In this study, we investigated emodin's anti-angiogenesis effect and focused on the mechanisms in human osteosarcoma (OS). OS cells were implanted to nude mice to form OS xenografts. Immunofluorescence assay was used to assess vWF expression in tumor tissue. MTT assay was employed to screen proper emodin concentrations unrelated with proliferation inhibition. siRNA technique was utilized to silence SIRT1 expression in OS cells. Expression levels of SIRT1 and VEGF were investigated by real-time PCR and western blotting. H4-k16Ac expression which indicated the deacetylation activity of SIRT1 was also detected by western blotting. As in results, HMGB1 treatment exacerbated OS angiogenesis both in vivo and in vitro. Emodin administration attenuated angiogenesis in both OS and HMGB1 treated OS in vivo and in vitro. After emodin treatment, the expression level and deacetylation activity of SIRT1 were dramatically enhanced. HMGB1-induced angiogenesis was more striking in SIRT1 silenced OS cells. SIRT1 silencing also impaired the anti-angiogenesis effect of emodin in OS cells. IN CONCLUSION SIRT expression and deacetylation activity elevation are involved in emodin's anti-angiogenesis effect in human OS.
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Affiliation(s)
- Wei Qu
- Department of Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine No 555, Friendship Rd, Xi'an 710054, China
| | - Yufei Wang
- Department of Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine No 555, Friendship Rd, Xi'an 710054, China
| | - Qining Wu
- Department of Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine No 555, Friendship Rd, Xi'an 710054, China
| | - Jijun Liu
- Department of Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine No 555, Friendship Rd, Xi'an 710054, China
| | - Dingjun Hao
- Department of Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine No 555, Friendship Rd, Xi'an 710054, China
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Engler A, Tange C, Frank-Bertoncelj M, Gay RE, Gay S, Ospelt C. Regulation and function of SIRT1 in rheumatoid arthritis synovial fibroblasts. J Mol Med (Berl) 2015; 94:173-82. [PMID: 26298564 DOI: 10.1007/s00109-015-1332-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 07/20/2015] [Accepted: 08/06/2015] [Indexed: 11/24/2022]
Abstract
UNLABELLED Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by inflammation and destruction of synovial joints. The function of sirtuin (SIRT)1 in RA is inconclusive. In human synovial cells, SIRT1 was shown to promote cytokine production and apoptosis resistance. However, deletion of SIRT1 aggravated inflammatory arthritis in mice and increased production of pro-inflammatory cytokines in murine macrophages. In the current study, we investigated the regulation, expression, and function of SIRT1 in RA, in particular its role in adhesion and proliferation of human RA synovial fibroblasts (RASF). We found that expression of SIRT1 was increased in vivo in synovial tissues of RA smokers and in vitro by stimulation of RASF with TNFα, but decreased upon treatment with cigarette smoke extract. Synovial tissues of RA smokers showed higher leukocytic infiltration that positively correlated with enhanced levels of SIRT1. Global transcriptome analysis revealed that SIRT1 modulates expression of genes involved in the regulation of inflammatory response and cell adhesion. In functional studies, silencing of SIRT1 reduced proliferation and leukocytic adhesion to RASF but showed inconsistent results in the regulation of adhesion to plastic. In conclusion, SIRT1 modulates the proliferative and potentially also adhesive properties of RASF and can therefore promote progression of RA. KEY MESSAGES SIRT1 is upregulated by TNFα but decreased upon CSE treatment of RASF. Upregulation of SIRT1 in RA smokers correlates with increased leukocytic infiltration. SIRT1 modulates expression of genes regulating cell adhesion and inflammation. SIRT1 regulates proliferation of RASF.
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Affiliation(s)
- Anna Engler
- Center of Experimental Rheumatology, Bio-Technopark Schlieren, University Hospital Zurich, Gloriastrasse 25, 8091 Zurich and Wagistrasse 14, 8952, Schlieren, Switzerland.,Zurich Center of Integrative Human Physiology (ZIHP), University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Clare Tange
- Center of Experimental Rheumatology, Bio-Technopark Schlieren, University Hospital Zurich, Gloriastrasse 25, 8091 Zurich and Wagistrasse 14, 8952, Schlieren, Switzerland
| | - Mojca Frank-Bertoncelj
- Center of Experimental Rheumatology, Bio-Technopark Schlieren, University Hospital Zurich, Gloriastrasse 25, 8091 Zurich and Wagistrasse 14, 8952, Schlieren, Switzerland
| | - Renate E Gay
- Center of Experimental Rheumatology, Bio-Technopark Schlieren, University Hospital Zurich, Gloriastrasse 25, 8091 Zurich and Wagistrasse 14, 8952, Schlieren, Switzerland
| | - Steffen Gay
- Center of Experimental Rheumatology, Bio-Technopark Schlieren, University Hospital Zurich, Gloriastrasse 25, 8091 Zurich and Wagistrasse 14, 8952, Schlieren, Switzerland
| | - Caroline Ospelt
- Center of Experimental Rheumatology, Bio-Technopark Schlieren, University Hospital Zurich, Gloriastrasse 25, 8091 Zurich and Wagistrasse 14, 8952, Schlieren, Switzerland.
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Feng Y, Fang W, Li C, Guo H, Li Y, Long X. The expression of high-mobility group box protein-1 in temporomandibular joint osteoarthritis with disc perforation. J Oral Pathol Med 2015; 45:148-52. [PMID: 26082301 DOI: 10.1111/jop.12336] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/19/2015] [Indexed: 12/11/2022]
Affiliation(s)
- Yaping Feng
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM); School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - Wei Fang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM); School and Hospital of Stomatology; Wuhan University; Wuhan China
- Department of Oral and Maxillofacial Surgery; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - Cheng Li
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM); School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - Huilin Guo
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM); School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - Yingjie Li
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM); School and Hospital of Stomatology; Wuhan University; Wuhan China
- Department of Oral and Maxillofacial Surgery; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - Xing Long
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM); School and Hospital of Stomatology; Wuhan University; Wuhan China
- Department of Oral and Maxillofacial Surgery; School and Hospital of Stomatology; Wuhan University; Wuhan China
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Abu El-Asrar AM, Mohammad G, Nawaz MI, Siddiquei MM. High-Mobility Group Box-1 Modulates the Expression of Inflammatory and Angiogenic Signaling Pathways in Diabetic Retina. Curr Eye Res 2014; 40:1141-52. [PMID: 25495026 DOI: 10.3109/02713683.2014.982829] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
PURPOSE The expression of high-mobility group box-1 (HMGB1) is upregulated in epiretinal membranes and vitreous fluid from patients with proliferative diabetic retinopathy and in the diabetic retina. HMGB1 mediates inflammation, breakdown of the blood-retinal barrier and apoptosis in the diabetic retina. Here, we investigated inflammatory and angiogenic signaling pathways activated by HMGB1 in diabetic retina. METHODS Human retinal microvascular endothelial cells (HRMEC) and retinas from 1-month diabetic rats and normal rats intravitreally injected with HMGB1 were studied using RT-PCR, Western blot analysis and co-immunoprecipitation. We also studied the effect of the HMGB1 inhibitor glycyrrhizin on diabetes-induced biochemical changes in the retina. RESULTS Diabetes and intravitreal injection of HMGB1 in normal rats induced significant upregulation of the mRNA levels of the chemokine stromal cell-derived factor-1 (SDF-1/CXCL12) receptor CXCR4 and protein levels of hypoxia-inducible factor-1α, early growth response-1, tyrosine kinase 2 and the CXCL12/CXCR4 chemokine axis. Constant glycyrrhizin intake from onset of diabetes did not affect the metabolic status of the diabetic rats, but it restored these increased mediators to control values. Stimulation of HRMEC with HMGB1 and intraviteral injection of HMGB1 significantly increased the expression of vascular endothelial growth factor (VEGF) and VEGF receptor-2. Co-immunoprecipitation studies showed that diabetes increased the interaction between CXCL12 and CXCR4 and between HMGB1 and receptor for advanced glycation end products (RAGE), but not between HMGB1 and the CXCL12/CXCR4 chemokine axis. CONCLUSIONS Our findings suggest that HMGB1 activates inflammatory and angiogenic signaling pathways in diabetic retina mediated by RAGE.
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Affiliation(s)
- Ahmed M Abu El-Asrar
- a Department of Ophthalmology , College of Medicine, King Saud University, King Abdulaziz University Hospital , Riyadh , Saudi Arabia
| | - Ghulam Mohammad
- a Department of Ophthalmology , College of Medicine, King Saud University, King Abdulaziz University Hospital , Riyadh , Saudi Arabia
| | - Mohammad Imtiaz Nawaz
- a Department of Ophthalmology , College of Medicine, King Saud University, King Abdulaziz University Hospital , Riyadh , Saudi Arabia
| | - Mohammad Mairaj Siddiquei
- a Department of Ophthalmology , College of Medicine, King Saud University, King Abdulaziz University Hospital , Riyadh , Saudi Arabia
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