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Bi T, Zhou Y, Mao L, Liang P, Liu J, Yang L, Ren G, Mazhar M, Shen H, Liu P, Spáčil R, Guo Q, Luo G, Yang S, Ren W. Zhilong Huoxue Tongyu capsule alleviates myocardial fibrosis by improving endothelial cell dysfunction. J Tradit Complement Med 2024; 14:40-54. [PMID: 38223805 PMCID: PMC10785151 DOI: 10.1016/j.jtcme.2023.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/06/2023] [Accepted: 07/06/2023] [Indexed: 01/16/2024] Open
Abstract
Background and aim Zhilong Huoxue Tongyu (ZL) capsule is a classical traditional Chinese medicine (TCM) with satisfactory curative effects. Endothelial cell (EC) dysfunction plays an important role during myocardial fibrosis (MF). But the therapeutic effect of ZL capsule on EC dysfunction remains unknown in the development of MF. This study aims to investigate the effect of ZL capsule on EC dysfunction during MF in vivo. Experimental procedure The model of MF is established in vivo by injecting isoproterenol for 14 days, simultaneously, we examined the therapeutic effect of ZL capsule on MF in vivo. An integrative approach combining biomarker examination, echocardiography and myocardial fibrosis condition using Hematoxylin-eosin staining, Masson staining, and Sirius red staining were performed to assess the efficacy of ZL capsule against MF. Subsequently, comprehensive immunofluorescence staining was performed to evaluate the therapeutic effect of ZL capsule on EC dysfunction. Results and conclusion Prior to experiments, analysis of the published single-cell sequencing data was performed and it was discovered that EC dysfunction plays an important role. Further pharmacological results showed that ZL capsule could alleviate fibrosis injury and collagen fiber deposition. The mechanism investigation results showed that the endothelial-to-mesenchymal transition (EndMT) and MHC class-II (MHC-II) expression in EC were improved. In addition, ZL capsule can attenuate the inflammatory response during MF by intervening the activation of CD4+T cell mediated by EC. For the first time, we provided evidence that ZL capsule could improve MF by alleviating EC dysfunction via the regulation of EndMT and expression of MHC-II. Taxonomy classification by evise Myocardial fibrosis, Chinese Herbal Medicine, Traditional Medicine, Endothelium, dysfunction, Endothelial-to-mesenchymal transition.
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Affiliation(s)
- Tao Bi
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Yanan Zhou
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Linshen Mao
- Department of Cardiovascular Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Pan Liang
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
- State Key Laboratories for Quality Research in Chinese Medicines, Faculty of Chinese Medicine, Macau University of Science and Technology, Macau, 853, China
| | - Jiali Liu
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Luyin Yang
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Guilin Ren
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Maryam Mazhar
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- The National T.C.M Service Export Base of the Affiliated T.C.M Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Hongping Shen
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Ping Liu
- Department of Cardiovascular Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Roman Spáčil
- The Czech Center for Traditional Chinese Medicine, Jeremenkova 1211/40, Olomouc, 77900, Czech Republic
| | - Qing Guo
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Gang Luo
- Department of Cardiovascular Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Sijin Yang
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- The National T.C.M Service Export Base of the Affiliated T.C.M Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
- State Key Laboratories for Quality Research in Chinese Medicines, Faculty of Chinese Medicine, Macau University of Science and Technology, Macau, 853, China
| | - Wei Ren
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- The National T.C.M Service Export Base of the Affiliated T.C.M Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
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Wang R, Tang C. Hydrogen Sulfide Biomedical Research in China-20 Years of Hindsight. Antioxidants (Basel) 2022; 11:2136. [PMID: 36358508 PMCID: PMC9686505 DOI: 10.3390/antiox11112136] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 11/19/2023] Open
Abstract
Hydrogen sulfide (H2S) is an important gasotransmitter that is produced by mammalian cells and performs profound physiological and pathophysiological functions. Biomedical research on H2S metabolism and function in China began 20 years ago, which pioneered the examination of the correlation of abnormal H2S metabolism and cardiovascular diseases. Over the last two decades, research teams in China have made numerous breakthrough discoveries on the effects of H2S metabolism on hypertension, atherosclerosis, pulmonary hypertension, shock, angiogenesis, chronic obstructive pulmonary disease, pain, iron homeostasis, and testicle function, to name a few. These research developments, carried by numerous research teams all over China, build nationwide research network and advance both laboratory study and clinical applications. An integrated and collaborative research strategy would further promote and sustain H2S biomedical research in China and in the world.
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Affiliation(s)
- Rui Wang
- Department of Biology, Faculty of Science, York University, Toronto, ON M3J 1P3, Canada
| | - Chaoshu Tang
- Department of Physiology and Pathophysiology, Peking University Health Science Centre, Beijing 100191, China
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Xu K, Liu Y, Wang J, Wang Y, Zhao Y, Zhao J, Zhang B, Shao G. Anti-inflammatory Effect of (-)-Epigallocatechin-3- O-gallate on Human Umbilical Vein Endothelial Cells Grown on 316L Stainless Steel via STAT3/NF-κB Signaling. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221119125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Stainless steel (316L SS) is commonly used to build coronary artery stents for the treatment of occluded arteries. However, tissues in contact with the stent may develop inflammation that can lead to restenosis. The natural substances derived from normal diet provide a pool of candidates that have potential to treat cardiovascular diseases. (-)-Epigallocatechin-3- O-gallate (EGCG), a polyphenolic flavonoid present in green tea, has antioxidant, antithrombogenic, and anti-inflammatory effects, and may reduce the risk of cardiovascular diseases. This study aimed to investigate whether EGCG has an anti-inflammatory effect on human umbilical vein endothelial cells (HUVECs) attached to the surface of 316L SS. We evaluated cell proliferation using the dimethyl thiazolyl tetrazolium bromide method in HUVECs after treatment with EGCG. Enzyme-linked immunosorbent assay (ELISA) assessed the level of inflammatory cytokines, including interleukin 6 (IL-6) and tumor necrosis factor (TNF) in HUVECs. We further investigated the regulatory mechanisms of the signal transducer and activator of transcription 3 (STAT3)/NF-κB signaling pathway in HUVECs by Western-blot analysis. We found that HUVECs cultured on 316L SS had increased cell proliferation and inflammation, and these can be inhibited by treatment with EGCG. EGCG reduced the secretion of IL-6 and TNF and decreased the expression of STAT3 and NF-κB in HUVECs cultured on 316L SS. Consequently, our study demonstrated that EGCG treatment ameliorates the proliferation of HUVEC when cultured with 316L SS, potentially by modulating the inflammation responses via the STAT3/NF-κB signaling pathways.
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Affiliation(s)
- Kun Xu
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, Changchun, China
- Jilin Engineering Research Center of Public Health Detection, Changchun, China
- Beijing Key Laboratory of Environmental Toxicology, Beijing, China
| | - Yi Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, Changchun, China
| | - Jinpeng Wang
- Department of Cardiology, the Second Hospital of Jilin University, Changchun, China
| | - Yue Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, Changchun, China
| | - Yuyi Zhao
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, Changchun, China
| | - Jinbin Zhao
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, Changchun, China
| | - Beilin Zhang
- Department of Physiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Guoxi Shao
- Department of Orthopaedics, The Second Hospital of Jilin University, Changchun, China
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Endogenous Taurine Downregulation Is Required for Renal Injury in Salt-Sensitive Hypertensive Rats via CBS/H 2S Inhibition. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5530907. [PMID: 34484563 PMCID: PMC8413057 DOI: 10.1155/2021/5530907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 07/23/2021] [Accepted: 08/12/2021] [Indexed: 12/03/2022]
Abstract
Although taurine is known to exert an antihypertensive effect, it is unclear whether it is involved in the mechanism for hypertension-related target organ injury. To reveal the role of endogenous taurine in renal injury formation during salt-sensitive hypertension and clarify its mechanisms, both salt-sensitive Dahl rats and salt-resistant SS-13BN rats were fed a high-salt diet (8% NaCl) and given 2% taurine for 6 weeks. Rat systolic blood pressure (SBP) was measured by the tail-cuff method and artery catheterization. Kidney ultrastructure was observed under an electron microscope. Taurine content and mRNA and protein levels of taurine synthases, cysteine dioxygenase type 1 (CDO1) and cysteine sulfinic acid decarboxylase (CSAD), were decreased in Dahl rats fed a high-salt diet. However, taurine supplementation and the resulting increase in renal taurine content reduced the increased SBP and improved renal function and structural damage in high-salt diet-fed Dahl rats. In contrast, taurine did not affect SS-13BN SBP and renal function and structure. Taurine intervention increased the renal H2S content and enhanced cystathionine-β-synthase (CBS) expression and activity in Dahl rats fed a high-salt diet. Taurine reduced the renin, angiotensin II, and aldosterone contents and the levels of oxidative stress indices in Dahl rat renal tissues but increased antioxidant capacity, antioxidant enzyme activity, and protein expression. However, taurine failed to achieve this effect in the renal tissue of SS-13BN rats fed a high-salt diet. Pretreatment with the CBS inhibitor HA or renal CBS knockdown inhibited H2S generation and subsequently blocked the effect of taurine on renin, superoxide dismutase 1 (SOD1), and superoxide dismutase 2 (SOD2) levels in high-salt-stimulated Dahl renal slices. In conclusion, the downregulation of endogenous taurine production resulted in a decrease in the renal CBS/H2S pathway. This decrease subsequently promoted renin-angiotensin-aldosterone system (RAAS) activation and oxidative stress in the kidney, ultimately contributing to renal injury in salt-sensitive Dahl rats.
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Guo Y, Balasubramanian B, Zhao ZH, Liu WC. Marine algal polysaccharides alleviate aflatoxin B1-induced bursa of Fabricius injury by regulating redox and apoptotic signaling pathway in broilers. Poult Sci 2020; 100:844-857. [PMID: 33518138 PMCID: PMC7858151 DOI: 10.1016/j.psj.2020.10.050] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/06/2020] [Accepted: 10/20/2020] [Indexed: 12/16/2022] Open
Abstract
Aflatoxin B1 (AFB1) causes toxic effect and leads to organ damage in broilers. Marine algal polysaccharides (MAP) of Enteromorpha prolifera exert multiple biological activities, maybe have a potential detoxification effect on AFB1, but the related research in broilers is extremely rare. Therefore, the purpose of this study was to investigate whether MAPs can alleviate AFB1-induced oxidative damage and apoptosis of bursa of Fabricius in broilers. A total of 216 five-week-old male indigenous yellow-feathered broilers (with average initial body weight 397.35 ± 6.32 g) were randomly allocated to one of three treatments (6 replicates with 12 broilers per replicate), and the trial lasted 4 wk. Experimental groups were followed as basal diet (control group); basal diet mixed with 100 μg/kg AFB1 (AFB1 group, the AFB1 is purified form); basal diet with 100 μg/kg AFB1 + 2,500 mg/kg MAPs (AFB1 + MAPs group). The results showed that the diet with AFB1 significantly decreased the relative weight of bursa of Fabricius (P < 0.05), antioxidant enzymes activities of total superoxide dismutase (T-SOD), catalase (CAT), glutathione peroxidase (GSH-Px), glutathione S-transferase (GST), and total antioxidation capacity (T-AOC), while increased malondialdehyde (MDA) content (P < 0.05). Besides, compared with AFB1 group, dietary MAPs improved the relative weight of bursa of Fabricius and activities of antioxidant enzymes (T-SOD, GSH-Px, CAT, GST) with decreased MDA contents (P < 0.05). Moreover, the consumption of AFB1 downregulated the mRNA expression of SOD1, SOD2, GSTA3, CAT1, GPX1, GPx3, GSTT1, Nrf2, HO-1, and p38MAPK (P < 0.05). Dietary MAPs upregulated the mRNA expression of SOD2, GSTA3, CAT1, GPX1, GSTT1, p38MAPK, Nrf2, and HO-1 in comparison with AFB1 group (P < 0.05). The histological analysis confirmed restoration of apoptotic cells of bursa of Fabricius (P < 0.01), which seen with MAPs supplemented broilers. Besides, dietary MAPs down-regulated the mRNA expression of caspase-3 and Bax (P < 0.05), while up-regulated the mRNA expression of Bcl-2 (P < 0.05) compared with AFB1 group. In addition, according to protein expression results, dietary MAPs up-regulated the protein expression level of antioxidant and apoptosis-associated proteins (Nrf2, HO-1, p38MAPK, Bcl-2) (P < 0.01), but down-regulated the protein expression level of caspase-3 and Bax (P < 0.01). In conclusion, dietary MAPs alleviated AFB1-induced bursa of Fabricius injury through regulating Nrf2-mediated redox and mitochondrial apoptotic signaling pathway in broilers.
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Affiliation(s)
- Yan Guo
- Department of Animal Science, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, P. R. China
| | | | - Zhi-Hui Zhao
- Department of Animal Science, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, P. R. China
| | - Wen-Chao Liu
- Department of Animal Science, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, P. R. China.
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Zhang H, Bai Z, Zhu L, Liang Y, Fan X, Li J, Wen H, Shi T, Zhao Q, Wang Z. Hydrogen sulfide donors: Therapeutic potential in anti-atherosclerosis. Eur J Med Chem 2020; 205:112665. [DOI: 10.1016/j.ejmech.2020.112665] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/09/2020] [Accepted: 07/12/2020] [Indexed: 12/15/2022]
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Murphy B, Bhattacharya R, Mukherjee P. Hydrogen sulfide signaling in mitochondria and disease. FASEB J 2019; 33:13098-13125. [PMID: 31648556 PMCID: PMC6894098 DOI: 10.1096/fj.201901304r] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/17/2019] [Indexed: 02/06/2023]
Abstract
Hydrogen sulfide can signal through 3 distinct mechanisms: 1) reduction and/or direct binding of metalloprotein heme centers, 2) serving as a potent antioxidant through reactive oxygen species/reactive nitrogen species scavenging, or 3) post-translational modification of proteins by addition of a thiol (-SH) group onto reactive cysteine residues: a process known as persulfidation. Below toxic levels, hydrogen sulfide promotes mitochondrial biogenesis and function, thereby conferring protection against cellular stress. For these reasons, increases in hydrogen sulfide and hydrogen sulfide-producing enzymes have been implicated in several human disease states. This review will first summarize our current understanding of hydrogen sulfide production and metabolism, as well as its signaling mechanisms; second, this work will detail the known mechanisms of hydrogen sulfide in the mitochondria and the implications of its mitochondrial-specific impacts in several pathologic conditions.-Murphy, B., Bhattacharya, R., Mukherjee, P. Hydrogen sulfide signaling in mitochondria and disease.
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Affiliation(s)
- Brennah Murphy
- Department of Pathology, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Resham Bhattacharya
- Department of Obstetrics and Gynecology, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
- Peggy and Charles Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Priyabrata Mukherjee
- Department of Pathology, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
- Peggy and Charles Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
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L-Cystathionine Protects against Homocysteine-Induced Mitochondria-Dependent Apoptosis of Vascular Endothelial Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:1253289. [PMID: 31885769 PMCID: PMC6899331 DOI: 10.1155/2019/1253289] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 10/09/2019] [Indexed: 12/22/2022]
Abstract
The study was aimed at investigating the effects of L-cystathionine on vascular endothelial cell apoptosis and its mechanisms. Cultured human umbilical vein endothelial cells (HUVECs) were used in the study. Apoptosis of vascular endothelial cells was induced by homocysteine. Apoptosis, mitochondrial superoxide anion, mitochondrial membrane potential, mitochondrial permeability transition pore (MPTP) opening, and caspase-9 and caspase-3 activities were examined. Expression of Bax, Bcl-2, and cleaved caspase-3 was tested and BTSA1, a Bax agonist, and HUVEC Bax overexpression was used in the study. Results showed that homocysteine obviously induced the apoptosis of HUVECs, and this effect was significantly attenuated by the pretreatment with L-cystathionine. Furthermore, L-cystathionine decreased the production of mitochondrial superoxide anion and the expression of Bax and restrained its translocation to mitochondria, increased mitochondrial membrane potential, inhibited mitochondrial permeability transition pore (MPTP) opening, suppressed the leakage of cytochrome c from mitochondria into the cytoplasm, and downregulated activities of caspase-9 and caspase-3. However, BTSA1, a Bax agonist, or Bax overexpression successfully abolished the inhibitory effect of L-cystathionine on Hcy-induced MPTP opening, caspase-9 and caspase-3 activation, and HUVEC apoptosis. Taken together, our results indicated that L-cystathionine could protect against homocysteine-induced mitochondria-dependent apoptosis of HUVECs.
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Yang L, Liu M, Sheng K, Li X, Du J, Ning Y, Wang X, Li J, Zhang Y, Wu S. Design and synthesis of a novel colorimetric fluorescent probe for the selective detection of sulfur dioxide in SH-SY5Y neuroblastoma cells and its applications in traditional Chinese medicines. NEW J CHEM 2019. [DOI: 10.1039/c8nj06326e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fast response time, low limit of detection and high fluorescence quantum yield probe DTCC was designed and synthesized to detect SO2 derivatives based on coumarin-thiophene dye which was fused with a coumarin moiety and 2-thiophenecarboxaldehyde.
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Zheng SF, Bao RK, Zhang QJ, Wang SC, Lin HJ. Endogenous Hydrogen Sulfide Promotes Apoptosis via Mitochondrial Pathways in the Livers of Broilers with Selenium Deficiency Exudative Diathesis Disease. Biol Trace Elem Res 2018. [PMID: 29524194 DOI: 10.1007/s12011-018-1292-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Hydrogen sulfide (H2S), an endogenous gasotransmitter, plays an important role in apoptosis. Exudative diathesis (ED) disease is associated with dietary selenium (Se) deficiency in broilers. The liver is one of the target organs of Se deficiency; however, little is known about the effect of H2S on apoptosis via mitochondrial pathways in the livers of broilers with ED disease. In the present study, we aimed to investigate the correlation between endogenous H2S and mitochondrial-mediated apoptosis in the livers of broilers with ED disease, as induced by Se deficiency. One hundred twenty healthy, 1-day-old broilers were randomly assigned to one of two groups (60 each) based on diet: Basal diet (control group, 0.2 mg/kg Se) or a low-Se diet (-Se group, 0.033 mg/kg Se). At day 20, 15 broilers of a similar weight were sacrificed from the control group, while the same number of broilers were euthanatized from the -Se group when displaying typical symptoms of ED between days 18 and 25. The livers were collected, and apoptosis was measured using a TUNEL assay. Additionally, H2S concentration, the expression of H2S synthases of cystathionine γ-lyase (CSE), cystathionine β-synthase (CBS), and 3-mercaptopyruvate sulfurtransferase (3-MST), as well as mitochondrial apoptosis-related genes of Bcl-2, Bax, Bak, Cyt-C, Caspase-9, Caspase-3, and p53, were examined in livers. The results indicated that Se deficiency could induce apoptosis in the livers of broilers. Swelling, fractures, and vacuolization were visible in the mitochondrial cristae in the livers of the -Se group. The expression of H2S synthase-related genes and H2S concentration was significantly enhanced (P < 0.05) in the livers of the -Se group compared to controls. Moreover, a low-Se diet downregulated (P < 0.05) the level of Bcl-2 and upregulated (P < 0.05) the levels of Bax, Bak, Cyt-C, Caspase-9, Caspase-3, and p53. These results suggest that an H2S increase in the livers of ED broilers, which was induced by Se deficiency, is related to apoptosis mediated by mitochondrial pathways.
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Affiliation(s)
- Shu-Fang Zheng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Rong-Kun Bao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Qiao-Jian Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Sheng-Chen Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Hong-Jin Lin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China.
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, Harbin, 150030, P. R. China.
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Wang C, Du J, Du S, Liu Y, Li D, Zhu X, Ni X. Endogenous H 2S resists mitochondria-mediated apoptosis in the adrenal glands via ATP5A1 S-sulfhydration in male mice. Mol Cell Endocrinol 2018; 474:65-73. [PMID: 29486221 DOI: 10.1016/j.mce.2018.02.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 02/21/2018] [Accepted: 02/22/2018] [Indexed: 12/26/2022]
Abstract
In a previous study, we showed that endogenous hydrogen sulfide (H2S) plays a key role in the maintenance of intact adrenal cortex function via the protection of mitochondrial function during endoxemia. We further investigated whether mitochondria-mediated apoptosis is involved in H2S protection of adrenal function. LPS treatment resulted in mitochondria-mediated apoptosis in the adrenal glands of male mice, and these effects were prevented by the H2S donor GYY4137. In the model of Y1 cells, the LPS-induced mitochondria-mediated apoptosis and blunt response to ACTH were rescued by GYY4137. The H2S-generating enzyme cystathionine-β-synthase (CBS) knockout heterozygous (CBS+/-) mice showed mitochondria-mediated apoptosis in the adrenal gland and adrenal insufficiency. GYY4137 treatment restored adrenal function and eliminated mitochondria-mediated apoptosis. Maleimide assay combined with mass spectrometry analysis showed that a number of proteins in mitochondria were S-sulfhydrated in the adrenal gland. ATP5A1 was further confirmed as S-sulfhydrated using a modified biotin switch assay. The level of S-sulfhydrated ATP5A1 was decreased in the adrenal gland of endotoxemic and CBS+/- mice, which was restored by GYY4137. ATP5A1 was identified as sulfhydrated at cysteine 244 by H2S. Overexpression of the cysteine 244 mutant ATP5A1 in Y1 cells resulted in a loss of LPS-induced mitochondria-mediated apoptosis and GYY4137 restoration of LPS-induced hyporesponsiveness to ACTH. Collectively, the present study revealed that decreased H2S generation leads to mitochondrial-mediated apoptosis in the adrenal cortex and a blunt response to ACTH. S-sulfhydration of ATP5A1 at cysteine 244 is an important molecular mechanism by which H2S maintains mitochondrial function and steroidogenesis in the adrenal glands.
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Affiliation(s)
- Changnan Wang
- Department of Physiology, Second Military Medical University, Shanghai, China
| | - Jiankui Du
- Department of Physiology, Second Military Medical University, Shanghai, China
| | - Shufang Du
- Department of Physiology, Second Military Medical University, Shanghai, China
| | - Yujian Liu
- School of Kinesiology, The Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Dongxia Li
- School of Kinesiology, The Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Xiaoyan Zhu
- Department of Physiology, Second Military Medical University, Shanghai, China.
| | - Xin Ni
- Department of Physiology, Second Military Medical University, Shanghai, China.
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12
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Wang J, Song C, Xiao Y, Liu B. In vivo and in vitro analyses of the effects of a novel high-nitrogen low-nickel coronary stent on reducing in-stent restenosis. J Biomater Appl 2018; 33:64-71. [PMID: 29720017 DOI: 10.1177/0885328218773306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Currently, percutaneous coronary intervention is an important treatment for coronary heart disease. However, the in-stent restenosis rate is still approximately 10–30% after stenting. Nickel ions from the stent are considered to be associated with in-stent restenosis. Therefore, in the present study, we quantitatively evaluated in-stent restenosis after implanting the novel high-nitrogen low-nickel coronary stent (HNS) and studied the mechanism underlying the reduction in in-stent restenosis by using ELISA and Western blot. The in vivo results showed that the HNS could significantly reduce neointima formation and inflammation as compared to SUS316L stents (316L) at 180 days after implantation in porcine coronary arteries and that vascular endothelial growth factor-A expression in porcine coronary arteries after HNS implantation also decreased. The in vitro results showed that, in the case of the HNS, human umbilical vein endothelial cell (HUVEC) proliferation was lower and lesser IL-6 release was noted from HUVECs at one and three days after culture than in the 316L group. Furthermore, p-STAT3 expression in HUVECs on the HNS surface was downregulated after culture for seven days. Thus, we conclude that the HNS could be a promising alternative coronary stent for percutaneous coronary intervention.
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Affiliation(s)
- Jinpeng Wang
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - Chunli Song
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - Yanlong Xiao
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - Bin Liu
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
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13
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Zhang D, Wang X, Tian X, Zhang L, Yang G, Tao Y, Liang C, Li K, Yu X, Tang X, Tang C, Zhou J, Kong W, Du J, Huang Y, Jin H. The Increased Endogenous Sulfur Dioxide Acts as a Compensatory Mechanism for the Downregulated Endogenous Hydrogen Sulfide Pathway in the Endothelial Cell Inflammation. Front Immunol 2018; 9:882. [PMID: 29760703 PMCID: PMC5936987 DOI: 10.3389/fimmu.2018.00882] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 04/09/2018] [Indexed: 02/04/2023] Open
Abstract
Endogenous hydrogen sulfide (H2S) and sulfur dioxide (SO2) are regarded as important regulators to control endothelial cell function and protect endothelial cell against various injuries. In our present study, we aimed to investigate the effect of endogenous H2S on the SO2 generation in the endothelial cells and explore its significance in the endothelial inflammation in vitro and in vivo. The human umbilical vein endothelial cell (HUVEC) line (EA.hy926), primary HUVECs, primary rat pulmonary artery endothelial cells (RPAECs), and purified aspartate aminotransferase (AAT) protein from pig heart were used for in vitro experiments. A rat model of monocrotaline (MCT)-induced pulmonary vascular inflammation was used for in vivo experiments. We found that endogenous H2S deficiency caused by cystathionine-γ-lyase (CSE) knockdown increased endogenous SO2 level in endothelial cells and enhanced the enzymatic activity of AAT, a major SO2 synthesis enzyme, without affecting the expressions of AAT1 and AAT2. While H2S donor could reverse the CSE knockdown-induced increase in the endogenous SO2 level and AAT activity. Moreover, H2S donor directly inhibited the activity of purified AAT protein, which was reversed by a thiol reductant DTT. Mechanistically, H2S donor sulfhydrated the purified AAT1/2 protein and rescued the decrease in the sulfhydration of AAT1/2 protein in the CSE knockdown endothelial cells. Furthermore, an AAT inhibitor l-aspartate-β-hydroxamate (HDX), which blocked the upregulation of endogenous SO2/AAT generation induced by CSE knockdown, aggravated CSE knockdown-activated nuclear factor-κB pathway in the endothelial cells and its downstream inflammatory factors including ICAM-1, TNF-α, and IL-6. In in vivo experiment, H2S donor restored the deficiency of endogenous H2S production induced by MCT, and reversed the upregulation of endogenous SO2/AAT pathway via sulfhydrating AAT1 and AAT2. In accordance with the results of the in vitro experiment, HDX exacerbated the pulmonary vascular inflammation induced by the broken endogenous H2S production in MCT-treated rat. In conclusion, for the first time, the present study showed that H2S inhibited endogenous SO2 generation by inactivating AAT via the sulfhydration of AAT1/2; and the increased endogenous SO2 generation might play a compensatory role when H2S/CSE pathway was downregulated, thereby exerting protective effects in endothelial inflammatory responses in vitro and in vivo.
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Affiliation(s)
- Da Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Xiuli Wang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Xiaoyu Tian
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Lulu Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Guosheng Yang
- Animal Center, Peking University First Hospital, Beijing, China
| | - Yinghong Tao
- Animal Center, Peking University First Hospital, Beijing, China
| | - Chen Liang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Kun Li
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, China
| | - Xiaoqi Yu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, China
| | - Xinjing Tang
- State Key Laboratory of Natural and Biomimetic Drugs, Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Chaoshu Tang
- Department of Physiology and Pathophysiology, Peking University Health Science Centre, Beijing, China.,Key Laboratory of Molecular Cardiology, Ministry of Education, Beijing, China
| | - Jing Zhou
- Department of Physiology and Pathophysiology, Peking University Health Science Centre, Beijing, China.,Key Laboratory of Molecular Cardiology, Ministry of Education, Beijing, China
| | - Wei Kong
- Department of Physiology and Pathophysiology, Peking University Health Science Centre, Beijing, China.,Key Laboratory of Molecular Cardiology, Ministry of Education, Beijing, China
| | - Junbao Du
- Department of Pediatrics, Peking University First Hospital, Beijing, China.,Key Laboratory of Molecular Cardiology, Ministry of Education, Beijing, China
| | - Yaqian Huang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Hongfang Jin
- Department of Pediatrics, Peking University First Hospital, Beijing, China
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14
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Peng J, Tang ZH, Ren Z, He B, Zeng Y, Liu LS, Wang Z, Wei DH, Zheng XL, Jiang ZS. TET2 Protects against oxLDL-Induced HUVEC Dysfunction by Upregulating the CSE/H 2S System. Front Pharmacol 2017; 8:486. [PMID: 28798687 PMCID: PMC5526911 DOI: 10.3389/fphar.2017.00486] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 07/07/2017] [Indexed: 12/16/2022] Open
Abstract
Ten-eleven translocation-2 (TET2) protein is a DNA demethylase that regulates gene expression through DNA demethylation and also plays important roles in various diseases including atherosclerosis. Endothelial dysfunction represents an early key event in atherosclerotic disease. The cystathionine-γ-lyase (CSE)/hydrogen sulfide (H2S) is a key endogenous system with protective effects on endothelial functions. In this study, we examined how TET2 regulates oxidized low-density lipoprotein (oxLDL)-induced dysfunction of human umbilical vein endothelial cells (HUVECs) and determined the role of the CSE/H2S system. Treatment with oxLDL resulted in downregulation of both TET2 expression and CSE/H2S system in HUVECs. TET2 was found to have protective effects on oxLDL-induced HUVEC dysfunction, which was confirmed with TET2 overexpression plasmid or TET2 shRNA plasmid. Moreover, TET2 was found to upregulate the CSE/H2S system and inhibit NF-κB activation, leading to decreased expression of ICAM-1 and VCAM-1 and attenuated adhesion of THP-1 cells to oxLDL-activated HUVECs. The protective effect of TET2 was reduced by treatment with CSE siRNA. Further studies revealed that CSE promoter region contains a well-defined CpG island. We also showed that TET2 enhanced 5-hydroxymethylcytosine (5hmC) level and promoted DNA demethylation of CSE gene promoter, leading to an increase in CSE expression. In conclusion, TET2 has protective effects on oxLDL-induced HUVEC dysfunction, likely through upregulating the CSE/H2S system by DNA demethylation of CSE gene promoter. TET2 may become a novel therapeutic target for endothelial dysfunction-associated vascular diseases.
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Affiliation(s)
- Juan Peng
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South ChinaHengyang, China
| | - Zhi-Han Tang
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South ChinaHengyang, China
| | - Zhong Ren
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South ChinaHengyang, China
| | - Bei He
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South ChinaHengyang, China
| | - Yun Zeng
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South ChinaHengyang, China
| | - Lu-Shan Liu
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South ChinaHengyang, China
| | - Zuo Wang
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South ChinaHengyang, China
| | - Dang-Heng Wei
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South ChinaHengyang, China
| | - Xi-Long Zheng
- Department of Biochemistry and Molecular Biology, Health Sciences Center, The Libin Cardiovascular Institute of Alberta, University of Calgary, CalgaryAB, Canada
| | - Zhi-Sheng Jiang
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South ChinaHengyang, China
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15
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Wang Y, Zhao Z, Shi S, Gao F, Wu J, Dong S, Zhang W, Liu Y, Zhong X. Calcium sensing receptor initiating cystathionine-gamma-lyase/hydrogen sulfide pathway to inhibit platelet activation in hyperhomocysteinemia rat. Exp Cell Res 2017. [PMID: 28633902 DOI: 10.1016/j.yexcr.2017.06.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hyperhomocysteinemia (HHcy, high homocysteine) induces the injury of endothelial cells (ECs). Hydrogen sulfide (H2S) protects ECs and inhibits the activation of platelets. Calcium-sensing receptor (CaSR) regulates the production of endogenous H2S. However, whether CaSR inhibits the injury of ECs and the activation of platelets by regulating the endogenous cystathionine-gamma-lyase (CSE, a major enzyme that produces H2S)/H2S pathway in hyperhomocysteinemia has not been previously investigated. Here, we tested the ultrastructure alterations of ECs and platelets, the changes in the concentration of serum homocysteine and the parameters of blood of hyperhomocysteinemia rats were measured. The aggregation rate and expression of P-selectin of platelets were assessed. Additionally, the expression levels of CaSR and CSE in the aorta of rats were examined by western blotting. The mitochondrial membrane potential and the production of reactive oxygen species (ROS) were measured; the expression of phospho-calmodulin kinases II (p-CaMK II) and Von Willebrand Factor (vWF) of cultured ECs from rat thoracic aortas were measured. We found that the aggregation rate and the expression of P-selectin of platelets increased, and the expression of CaSR and CSE decreased in HHcy rats. In the ECs of HHcy group, the ROS production increased and the mitochondrial membrane potential decreased markedly, the expression of CSE and the p-CaMK II increased after treatment with CaSR agonist while decreased upon administration of U73122 (PLC-specific inhibitor) and 2-APB (IP3 Receptor inhibitor). CaSR agonist or NaHS significantly reversed the ECs injured and platelet aggregation caused by hyperhomocysteinemia. Our results demonstrate that CaSR regulates the endogenous CSE/H2S pathway to inhibit the activation of platelets which concerts the protection of ECs in hyperhomocysteinemia.
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Affiliation(s)
- Yuwen Wang
- Department of Clinical Laboratory, The second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Ziqing Zhao
- Department of Pathophysiology, Harbin Medical University, Harbin 150086, China
| | - Sa Shi
- Department of Pathophysiology, Harbin Medical University, Harbin 150086, China
| | - Fei Gao
- Department of Clinical Laboratory, The second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Jichao Wu
- Department of Pathophysiology, Harbin Medical University, Harbin 150086, China
| | - Shiyun Dong
- Department of Pathophysiology, Harbin Medical University, Harbin 150086, China
| | - Weihua Zhang
- Department of Pathophysiology, Harbin Medical University, Harbin 150086, China
| | - Yanhong Liu
- Department of Clinical Laboratory, The second Affiliated Hospital of Harbin Medical University, Harbin 150086, China.
| | - Xin Zhong
- Department of Pathophysiology, Harbin Medical University, Harbin 150086, China.
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16
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Zhai Y, Tyagi SC, Tyagi N. Cross-talk of MicroRNA and hydrogen sulfide: A novel therapeutic approach for bone diseases. Biomed Pharmacother 2017; 92:1073-1084. [PMID: 28618652 DOI: 10.1016/j.biopha.2017.06.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 06/01/2017] [Accepted: 06/05/2017] [Indexed: 12/14/2022] Open
Abstract
Bone homeostasis requires a balance between the bone formation of osteoblasts and bone resorption of osteoclasts to maintain ideal bone mass and bone quality. An imbalance in bone remodeling processes results in bone metabolic disorders such as osteoporosis. Hydrogen sulfide (H2S), a gasotransmitter, has attracted the focus of many researchers due to its multiple physiological functions. It has been implicated in anti-inflammatory, vasodilatory, angiogenic, cytoprotective, anti-oxidative and anti-apoptotic mechanisms. H2S has also been shown to exert osteoprotective activity through its anti-inflammatory and anti-oxidative effects. However, the underlying molecular mechanisms by which H2S mitigates bone diseases are not completely understood. Experimental evidence suggests that H2S may regulate signaling pathways by directly influencing a gene in the cascade or interacting with some other gasotransmitter (carbon monoxide or nitric oxide) or both. MicroRNAs (miRNAs) are short non-coding RNAs which regulate gene expression by targeting, binding and suppressing mRNAs; thus controlling cell fate. Certainly, bone remodeling is also regulated by miRNAs expression and has been reported in many studies. MicroRNAs also regulate H2S biosynthesis. The inter-regulation of microRNAs and H2S opens a new possibility for exploring the H2S-microRNA crosstalk in bone diseases. However, the relationship between miRNAs, bone development, and H2S is still not well explained. This review focuses on miRNAs and their roles in regulating bone remodeling and possible mechanisms behind H2S mediated bone loss inhibition, H2S-miRNAs crosstalk in relation to the pathophysiology of bone remodeling, and future perspectives for miRNA-H2S as a therapeutic agent for bone diseases.
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Affiliation(s)
- Yuankun Zhai
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Suresh C Tyagi
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Neetu Tyagi
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA.
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17
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Yu W, Liu D, Liang C, Ochs T, Chen S, Chen S, Du S, Tang C, Huang Y, Du J, Jin H. Sulfur Dioxide Protects Against Collagen Accumulation in Pulmonary Artery in Association With Downregulation of the Transforming Growth Factor β1/Smad Pathway in Pulmonary Hypertensive Rats. J Am Heart Assoc 2016; 5:e003910. [PMID: 27792648 PMCID: PMC5121494 DOI: 10.1161/jaha.116.003910] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 09/13/2016] [Indexed: 01/09/2023]
Abstract
BACKGROUND We aimed to explore the role of endogenous sulfur dioxide (SO2) in pulmonary vascular collagen remodeling induced by monocrotaline and its mechanisms. METHODS AND RESULTS A rat model of monocrotaline-induced pulmonary vascular collagen remodeling was developed and administered with l-aspartate-β-hydroxamate or SO2 donor. The morphology of small pulmonary arteries and collagen metabolism were examined. Cultured pulmonary arterial fibroblasts stimulated by transforming growth factor β1 (TGF-β1) were used to explore the mechanism. The results showed that in monocrotaline-treated rats, mean pulmonary artery pressure increased markedly, small pulmonary arterial remodeling developed, and collagen deposition in lung tissue and pulmonary arteries increased significantly in association with elevated SO2 content, aspartate aminotransferase (AAT) activity, and expression of AAT1 compared with control rats. Interestingly, l-aspartate-β-hydroxamate, an inhibitor of SO2 generation, further aggravated pulmonary vascular collagen remodeling in monocrotaline-treated rats, and inhibition of SO2 in pulmonary artery smooth muscle cells activated collagen accumulation in pulmonary arterial fibroblasts. SO2 donor, however, alleviated pulmonary vascular collagen remodeling with inhibited collagen synthesis, augmented collagen degradation, and decreased TGF-β1 expression of pulmonary arteries. Mechanistically, overexpression of AAT1, a key enzyme of SO2 production, prevented the activation of the TGF-β/type I TGF-β receptor/Smad2/3 signaling pathway and abnormal collagen synthesis in pulmonary arterial fibroblasts. In contrast, knockdown of AAT1 exacerbated Smad2/3 phosphorylation and deposition of collagen types I and III in TGF-β1-treated pulmonary arterial fibroblasts. CONCLUSIONS Endogenous SO2 plays a protective role in pulmonary artery collagen accumulation induced by monocrotaline via inhibition of the TGF-β/type I TGF-β receptor/Smad2/3 pathway.
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Affiliation(s)
- Wen Yu
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Die Liu
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Chen Liang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Todd Ochs
- Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Stella Chen
- Department of Biochemistry and Cellular Biology, University of California, San Diego, La Jolla, CA
| | - Selena Chen
- Department of Biochemistry and Cellular Biology, University of California, San Diego, La Jolla, CA
| | - Shuxu Du
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Chaoshu Tang
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Beijing, China Key Laboratory of Molecular Cardiology, Ministry of Education, Beijing, China
| | - Yaqian Huang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Junbao Du
- Department of Pediatrics, Peking University First Hospital, Beijing, China Key Laboratory of Molecular Cardiology, Ministry of Education, Beijing, China
| | - Hongfang Jin
- Department of Pediatrics, Peking University First Hospital, Beijing, China
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18
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Wang MJ, Cai WJ, Zhu YC. Hydrogen sulphide in cardiovascular system: A cascade from interaction between sulphur atoms and signalling molecules. Life Sci 2016; 153:188-97. [PMID: 27071836 DOI: 10.1016/j.lfs.2016.03.057] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 03/20/2016] [Accepted: 03/31/2016] [Indexed: 02/01/2023]
Abstract
As a gasotransmitter, hydrogen sulphide exerts its extensive physiological and pathophysiological effects in mammals. The interaction between sulphur atoms and signalling molecules forms a cascade that modulates cellular functions and homeostasis. In this review, we focus on the signalling mechanism underlying the effect of hydrogen sulphide in the cardiovascular system and metabolism as well as the biological relevance to human diseases.
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Affiliation(s)
- Ming-Jie Wang
- Research Center on Aging and Medicine, Fudan University, Shanghai Key Laboratory of Bioactive Small Molecules, Department of Physiology and Pathophysiology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wen-Jie Cai
- Department of Basic Medicine, College of Medical Instruments and Foodstuff, University of Shanghai for Science and Technology, Shanghai, China
| | - Yi-Chun Zhu
- Research Center on Aging and Medicine, Fudan University, Shanghai Key Laboratory of Bioactive Small Molecules, Department of Physiology and Pathophysiology, Shanghai Medical College, Fudan University, Shanghai, China.
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