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Xu Y, Zhu K, Wu J, Zheng S, Zhong R, Zhou W, Cao Y, Liu J, Wang H. HBOC alleviated tumour hypoxia during radiotherapy more intensely in large solid tumours than regular ones. Artif Cells Nanomed Biotechnol 2024; 52:1-14. [PMID: 37994792 DOI: 10.1080/21691401.2023.2276768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 09/07/2023] [Indexed: 11/24/2023]
Abstract
Radiotherapy (RT) is a highly valuable method in cancer therapy, but its therapeutic efficacy is limited by its side effects and tumour radiation resistance. The resistance is mainly induced by hypoxia in the tumour microenvironment (TME). As a nano-oxygen carrier, Haemoglobin-based oxygen carriers (HBOCs) administration is a promising strategy to alleviate tumour hypoxia which may remodel TME to ameliorate radiation resistance and enable RT more effective. In this study, we administered fractionated RT combined with HBOC to treat Miapaca-2 cell and Hela cell xenografts on nude mice. The study found that HBOC relieved hypoxic environment and down-regulate expression of hypoxia-inducible factor-1α (Hif-1α) both in regular (100 mm3) and large (360/400 mm3) tumours. The proliferation and metastasis of tumour tissue also decreased after HBOC application. Nevertheless, in vivo RT combined with HBOC performed more effectively to suppress tumour growth in large tumours than in regular tumours. This is due to more severe hypoxic regions exist in the large solid tumours compared to the regular counterparts, and HBOC administration may be more effective in alleviating hypoxia in large tumours. Thus, HBOC sensitization therapy is more suitable for large solid tumours.
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Affiliation(s)
- Yingcan Xu
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Peking Union Medical College, Chengdu, China
| | - Kehui Zhu
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Peking Union Medical College, Chengdu, China
| | - Jiakang Wu
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Peking Union Medical College, Chengdu, China
| | - Shifan Zheng
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Peking Union Medical College, Chengdu, China
| | - Rui Zhong
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Peking Union Medical College, Chengdu, China
| | - Wentao Zhou
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Peking Union Medical College, Chengdu, China
| | - Ye Cao
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Peking Union Medical College, Chengdu, China
| | - Jiaxin Liu
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Peking Union Medical College, Chengdu, China
| | - Hong Wang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Peking Union Medical College, Chengdu, China
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Luo M, Chen P, Tian Y, Rigzin N, Sonam J, Shang F, Tai C, Li T, Sang H. Hif-1α expression targets the TMA/Fmo3/TMAO axis to participate in gallbladder cholesterol stone formation in individuals living in plateau regions. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167188. [PMID: 38657913 DOI: 10.1016/j.bbadis.2024.167188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 04/08/2024] [Accepted: 04/15/2024] [Indexed: 04/26/2024]
Abstract
The incidence of gallbladder cholesterol stones (GCS) increases rapidly among people living in high-altitude hypoxic environments compared to those in normoxic areas. Upregulation of hepatic hypoxia inducible factor 1α (Hif-1α) plays a key role in the formation of GCS. High plasma trimethylamine-N-oxide (TMAO) levels are positively correlated with the occurrence of GCS. We hypothesized that HIF-1α may upregulate TMAO levels by promoting the transcription of flavin-containing monooxygenase 3 (Fmo3), which eventually leads to GCS formation. Our study shows that in women, high plasma total cholesterol and apolipoprotein B were positively correlated with cholecystolithiasis and hypoxia. Hif-1α binds to the Fmo3 promoter and promotes Fmo3 expression. Hypoxia and lithogenic diet induce the expression of Hif-1α, Fmo3, TMAO and cholesterol tube transporters in the livers of mice, disturb the proportion of bile and plasma components, and induce the formation of GCS. In cell experiments, silencing Hif-1α downregulates the expression of Fmo3, TMAO and cholesterol tube transporters. In a mouse model of hypoxic cholecystolithiasis, silencing Hif-1α downregulates the expression of related genes, restores the proportion of bile and plasma lipid components, and reduces the formation of GCS. Our study shows that Hif-1α binds to the promoter region of Fmo3 and promotes Fmo3 transcription. Thus, it mediates the transcriptional activation of the TMA/Fmo3/TMAO pathway, upregulates the expression of ATP-binding cassettes (Abc) g5 and g8, and participates in the regulation of the occurrence of GCS in the plateau region.
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Affiliation(s)
- Mingxiao Luo
- Department of General Surgery, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, PR China
| | - Peng Chen
- Department of General Surgery, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, PR China
| | - Ye Tian
- Department of Thoracic Surgery, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, PR China
| | - Norbu Rigzin
- Department of General Surgery, Naqu People's Hospital of the Tibet Autonomous Region, Naqu, Tibet, PR China
| | - Jigme Sonam
- Department of General Surgery, Naqu People's Hospital of the Tibet Autonomous Region, Naqu, Tibet, PR China
| | - Feihu Shang
- Department of General Surgery, Naqu People's Hospital of the Tibet Autonomous Region, Naqu, Tibet, PR China
| | - Chuang Tai
- Department of General Surgery, Naqu People's Hospital of the Tibet Autonomous Region, Naqu, Tibet, PR China
| | - Tingting Li
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, PR China.
| | - Haiquan Sang
- Department of General Surgery, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, PR China; Department of General Surgery, Naqu People's Hospital of the Tibet Autonomous Region, Naqu, Tibet, PR China.
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Chen N, Xie QM, Song SM, Guo SN, Fang Y, Fei GH, Wu HM. Dexamethasone protects against asthma via regulating Hif-1α-glycolysis-lactate axis and protein lactylation. Int Immunopharmacol 2024; 131:111791. [PMID: 38460304 DOI: 10.1016/j.intimp.2024.111791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/18/2024] [Accepted: 02/29/2024] [Indexed: 03/11/2024]
Abstract
PURPOSE Asthma can not be eradicated till now and its control primarily relies on the application of corticosteroids. Recently, glycolytic reprogramming has been reportedly contributed to asthma, this study aimed to reveal whether the effect of corticosteroids on asthma control is related to their regulation of glycolysis and glycolysis-dependent protein lactylation. METHODS Ovalbumin (OVA) aeroallergen was used to challenge mice and stimulate human macrophage cell line THP-1 following dexamethasone (DEX) treatment. Airway hyperresponsiveness, airway inflammation, the expressions of key glycolytic enzymes and pyroptosis markers, the level of lactic acid, real-time glycolysis and oxidative phosphorylation (OXPHOS), and protein lactylation were analyzed. RESULTS DEX significantly attenuated OVA-induced eosinophilic airway inflammation, including airway hyperresponsiveness, leukocyte infiltration, goblet cell hyperplasia, Th2 cytokines production and pyroptosis markers expression. Meanwhile, OVA-induced Hif-1α-glycolysis axis was substantially downregulated by DEX, which resulted in low level of lactic acid. Besides, key glycolytic enzymes in the lungs of asthmatic mice were notably co-localized with F4/80-positive macrophages, indicating metabolic shift to glycolysis in lung macrophages during asthma. This was confirmed in OVA-stimulated THP-1 cells that DEX treatment resulted in reductions in pyroptosis, glycolysis and lactic acid level. Finally, protein lactylation was found significantly increased in the lungs of asthmatic mice and OVA-stimulated THP-1 cells, which were both inhibited by DEX. CONCLUSION Our present study revealed that the effect of DEX on asthma control was associated with its suppressing of Hif-1α-glycolysis-lactateaxis and subsequent protein lactylation, which may open new avenues for the therapy of eosinophilic asthma.
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Affiliation(s)
- Ning Chen
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No. 218, Hefei, Anhui 230022, PR China
| | - Qiu-Meng Xie
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No. 218, Hefei, Anhui 230022, PR China
| | - Si-Ming Song
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No. 218, Hefei, Anhui 230022, PR China
| | - Si-Nuo Guo
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No. 218, Hefei, Anhui 230022, PR China
| | - Yu Fang
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No. 218, Hefei, Anhui 230022, PR China
| | - Guang-He Fei
- Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui 230022, PR China; Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China.
| | - Hui-Mei Wu
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No. 218, Hefei, Anhui 230022, PR China.
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Khashchenko EP, Vysokikh MY, Marey MV, Sidorova KO, Manukhova LA, Shkavro NN, Uvarova EV, Chuprynin VD, Fatkhudinov TK, Adamyan LV, Sukhikh GT. Altered Glycolysis, Mitochondrial Biogenesis, Autophagy and Apoptosis in Peritoneal Endometriosis in Adolescents. Int J Mol Sci 2024; 25:4238. [PMID: 38673823 PMCID: PMC11050237 DOI: 10.3390/ijms25084238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/01/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Energy metabolism plays a pivotal role in the pathogenesis of endometriosis. For the initial stages of the disease in adolescents, this aspect remains unexplored. The objective of this paper was to analyze the association of cellular and endosomal profiles of markers of glycolysis, mitochondrial biogenesis, apoptosis, autophagy and estrogen signaling in peritoneal endometriosis (PE) in adolescents. We included 60 girls aged 13-17 years in a case-control study: 45 with laparoscopically confirmed PE (main group) and 15 with paramesonephric cysts (comparison group). Samples of plasma and peritoneal fluid exosomes, endometrioid foci and non-affected peritoneum were tested for estrogen receptor (Erα/β), hexokinase (Hex2), pyruvate dehydrogenase kinase (PDK1), glucose transporter (Glut1), monocarboxylate transporters (MCT1 and MCT2), optic atrophy 1 (OPA1, mitochondrial fusion protein), dynamin-related protein 1 (DRP1, mitochondrial fission protein), Bax, Bcl2, Beclin1, Bnip3, P38 mitogen-activated protein kinase (MAPK), hypoxia-inducible factor 1 (Hif-1α), mitochondrial voltage-dependent anion channel (VDAC) and transforming growth factor (TGFβ) proteins as markers of estrogen signaling, glycolysis rates, mitochondrial biogenesis and damage, apoptosis and autophagy (Western-Blot and PCR). The analysis identified higher levels of molecules associated with proliferation (ERβ), glycolysis (MCT2, PDK1, Glut1, Hex2, TGFβ and Hif-1α), mitochondrial biogenesis (OPA1, DRP1) and autophagy (P38, Beclin1 and Bnip3) and decreased levels of apoptosis markers (Bcl2/Bax) in endometrioid foci compared to non-affected peritoneum and that in the comparison group (p < 0.05). Patients with PE had altered profiles of ERβ in plasma and peritoneal fluid exosomes and higher levels of Glut1, MCT2 and Bnip3 in plasma exosomes (p < 0.05). The results of the differential expression profiles indicate microenvironment modification, mitochondrial biogenesis, estrogen reception activation and glycolytic switch along with apoptosis suppression in peritoneal endometrioid foci already in adolescents.
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Affiliation(s)
- Elena P. Khashchenko
- FSBI “National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov”, Ministry of Healthcare of the Russian Federation, 4, Oparina Str., 117997 Moscow, Russia; (M.Y.V.); (M.V.M.); (L.A.M.); (N.N.S.); (E.V.U.); (V.D.C.); (T.K.F.)
| | - Mikhail Yu. Vysokikh
- FSBI “National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov”, Ministry of Healthcare of the Russian Federation, 4, Oparina Str., 117997 Moscow, Russia; (M.Y.V.); (M.V.M.); (L.A.M.); (N.N.S.); (E.V.U.); (V.D.C.); (T.K.F.)
- A.N. Belozersky Research Institute of Physico-Chemical Biology MSU, Leninskye Gory, House 1, Building 40, 119992 Moscow, Russia
| | - Maria V. Marey
- FSBI “National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov”, Ministry of Healthcare of the Russian Federation, 4, Oparina Str., 117997 Moscow, Russia; (M.Y.V.); (M.V.M.); (L.A.M.); (N.N.S.); (E.V.U.); (V.D.C.); (T.K.F.)
| | - Ksenia O. Sidorova
- Faculty of Medicine and Biology, Pirogov Russian National Research Medical University, 1 Ostrovityanova Str., 117997 Moscow, Russia;
| | - Ludmila A. Manukhova
- FSBI “National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov”, Ministry of Healthcare of the Russian Federation, 4, Oparina Str., 117997 Moscow, Russia; (M.Y.V.); (M.V.M.); (L.A.M.); (N.N.S.); (E.V.U.); (V.D.C.); (T.K.F.)
| | - Natalya N. Shkavro
- FSBI “National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov”, Ministry of Healthcare of the Russian Federation, 4, Oparina Str., 117997 Moscow, Russia; (M.Y.V.); (M.V.M.); (L.A.M.); (N.N.S.); (E.V.U.); (V.D.C.); (T.K.F.)
| | - Elena V. Uvarova
- FSBI “National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov”, Ministry of Healthcare of the Russian Federation, 4, Oparina Str., 117997 Moscow, Russia; (M.Y.V.); (M.V.M.); (L.A.M.); (N.N.S.); (E.V.U.); (V.D.C.); (T.K.F.)
- Department for Obstetrics, Gynecology, Perinatology and Reproduction, Sechenov First Moscow State Medical University, Trubetskaya Str. 8, Bld. 2, 119991 Moscow, Russia
| | - Vladimir D. Chuprynin
- FSBI “National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov”, Ministry of Healthcare of the Russian Federation, 4, Oparina Str., 117997 Moscow, Russia; (M.Y.V.); (M.V.M.); (L.A.M.); (N.N.S.); (E.V.U.); (V.D.C.); (T.K.F.)
| | - Timur Kh. Fatkhudinov
- FSBI “National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov”, Ministry of Healthcare of the Russian Federation, 4, Oparina Str., 117997 Moscow, Russia; (M.Y.V.); (M.V.M.); (L.A.M.); (N.N.S.); (E.V.U.); (V.D.C.); (T.K.F.)
- Department of Histology, Cytology and Embryology, Peoples’ Friendship University of Russia (RUDN), Miklukho-Maklaya Str. 6, 117997 Moscow, Russia
| | - Leila V. Adamyan
- FSBI “National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov”, Ministry of Healthcare of the Russian Federation, 4, Oparina Str., 117997 Moscow, Russia; (M.Y.V.); (M.V.M.); (L.A.M.); (N.N.S.); (E.V.U.); (V.D.C.); (T.K.F.)
| | - Gennady T. Sukhikh
- FSBI “National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov”, Ministry of Healthcare of the Russian Federation, 4, Oparina Str., 117997 Moscow, Russia; (M.Y.V.); (M.V.M.); (L.A.M.); (N.N.S.); (E.V.U.); (V.D.C.); (T.K.F.)
- Department for Obstetrics, Gynecology, Perinatology and Reproduction, Sechenov First Moscow State Medical University, Trubetskaya Str. 8, Bld. 2, 119991 Moscow, Russia
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Belužić R, Šimunić E, Podgorski II, Pinterić M, Hadžija MP, Balog T, Sobočanec S. Gene Expression Profiling Reveals Fundamental Sex-Specific Differences in SIRT3-Mediated Redox and Metabolic Signaling in Mouse Embryonic Fibroblasts. Int J Mol Sci 2024; 25:3868. [PMID: 38612678 PMCID: PMC11012119 DOI: 10.3390/ijms25073868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/14/2024] Open
Abstract
Sirt-3 is an important regulator of mitochondrial function and cellular energy homeostasis, whose function is associated with aging and various pathologies such as Alzheimer's disease, Parkinson's disease, cardiovascular diseases, and cancers. Many of these conditions show differences in incidence, onset, and progression between the sexes. In search of hormone-independent, sex-specific roles of Sirt-3, we performed mRNA sequencing in male and female Sirt-3 WT and KO mouse embryonic fibroblasts (MEFs). The aim of this study was to investigate the sex-specific cellular responses to the loss of Sirt-3. By comparing WT and KO MEF of both sexes, the differences in global gene expression patterns as well as in metabolic and stress responses associated with the loss of Sirt-3 have been elucidated. Significant differences in the activities of basal metabolic pathways were found both between genotypes and between sexes. In-depth pathway analysis of metabolic pathways revealed several important sex-specific phenomena. Male cells mount an adaptive Hif-1a response, shifting their metabolism toward glycolysis and energy production from fatty acids. Furthermore, the loss of Sirt-3 in male MEFs leads to mitochondrial and endoplasmic reticulum stress. Since Sirt-3 knock-out is permanent, male cells are forced to function in a state of persistent oxidative and metabolic stress. Female MEFs are able to at least partially compensate for the loss of Sirt-3 by a higher expression of antioxidant enzymes. The activation of neither Hif-1a, mitochondrial stress response, nor oxidative stress response was observed in female cells lacking Sirt-3. These findings emphasize the sex-specific role of Sirt-3, which should be considered in future research.
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Dong H, Zhang X, Duan Y, He Y, Zhao J, Wang Z, Wang J, Li Q, Fan G, Liu Z, Shen C, Zhang Y, Yu M, Fei J, Huang F. Hypoxia inducible factor-1α regulates microglial innate immune memory and the pathology of Parkinson's disease. J Neuroinflammation 2024; 21:80. [PMID: 38555419 PMCID: PMC10981320 DOI: 10.1186/s12974-024-03070-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 03/20/2024] [Indexed: 04/02/2024] Open
Abstract
Neuroinflammation is one of the core pathological features of Parkinson's disease (PD). Innate immune cells play a crucial role in the progression of PD. Microglia, the major innate immune cells in the brain, exhibit innate immune memory effects and are recognized as key regulators of neuroinflammatory responses. Persistent modifications of microglia provoked by the first stimuli are pivotal for innate immune memory, resulting in an enhanced or suppressed immune response to second stimuli, which is known as innate immune training and innate immune tolerance, respectively. In this study, LPS was used to establish in vitro and in vivo models of innate immune memory. Microglia-specific Hif-1α knockout mice were further employed to elucidate the regulatory role of HIF-1α in innate immune memory and MPTP-induced PD pathology. Our results showed that different paradigms of LPS could induce innate immune training or tolerance in the nigrostriatal pathway of mice. We found that innate immune tolerance lasting for one month protected the dopaminergic system in PD mice, whereas the effect of innate immune training was limited. Deficiency of HIF-1α in microglia impeded the formation of innate immune memory and exerted protective effects in MPTP-intoxicated mice by suppressing neuroinflammation. Therefore, HIF-1α is essential for microglial innate immune memory and can promote neuroinflammation associated with PD.
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Affiliation(s)
- Hongtian Dong
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Xiaoshuang Zhang
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Yufei Duan
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Yongtao He
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Jiayin Zhao
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Zishan Wang
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Jinghui Wang
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Qing Li
- School of Life Science and Technology, Tongji University, 1239 Shipping Road, Shanghai, 200092, China
| | - Guangchun Fan
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Zhaolin Liu
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Chenye Shen
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Yunhe Zhang
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Mei Yu
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China.
| | - Jian Fei
- School of Life Science and Technology, Tongji University, 1239 Shipping Road, Shanghai, 200092, China.
- Shanghai Engineering Research Center for Model Organisms, Shanghai Model Organisms Center, INC., Shanghai, 201203, China.
| | - Fang Huang
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China.
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Zhang YM, Miao ZM, Chen YP, Song ZB, Li YY, Liu ZW, Zhou GC, Li J, Shi LL, Chen Y, Zhang SZ, Xu X, He JP, Wang JF, Zhang LY, Liu YQ. Ononin promotes radiosensitivity in lung cancer by inhibiting HIF-1α/VEGF pathway. Phytomedicine 2024; 125:155290. [PMID: 38308918 DOI: 10.1016/j.phymed.2023.155290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/12/2023] [Accepted: 12/16/2023] [Indexed: 02/05/2024]
Abstract
BACKGROUND In our previous study, we provided evidence that Astragalus mongholicus Bunge(AM) and its extracts possess a protective capability against radiation-induced damage, potentially mediated through the reduction of reactive oxygen species (ROS) and nitric oxide (NO). However, we were pleasantly surprised to discover during our experimentation that AM not only offers protection against radiation damage but also exhibits a radiation sensitization effect. This effect may be attributed to a specific small molecule present in AM known as ononin. Currently, radiation sensitizers are predominantly found in nitrazole drugs and nanomaterials, with no existing reports on the radiation sensitization properties of ononin, nor its underlying mechanism. PURPOSE This study aims to investigate the sensitization effect of the small molecule ononin derived from AM on lung cancer radiotherapy, elucidating its specific molecular mechanism of action. Additionally, the safety profile of combining astragalus small molecule ononin with radiation therapy will be evaluated. METHODS The effective concentration of ononin was determined through cell survival experiments, and the impact of ononin combined with varying doses of radiation on lung cancer cells was observed using CCK-8 and cell cloning experiments. The apoptotic effect of ononin combined with radiation on lung cancer cells was assessed using Hochester staining, flow cytometry, and WB assay. Additionally, WB and immunofluorescence analysis were conducted to investigate the influence of ononin on HIF-1α/VEGF pathway. Furthermore, Molecular Dynamics Simulation was employed to validate the targeted binding ability of ononin and HIF-1α. A lung cancer cell line was established to investigate the effects of knockdown and overexpression of HIF-1α. Subsequently, the experiment was repeated using tumor bearing nude mice and C57BL/6 mouse models in an in vivo study. Tumor volume was measured using a vernier caliper, while HE, immunohistochemistry, and immunofluorescence techniques were employed to observe the effects of ononin combined with radiation on tumor morphology, proliferation, and apoptosis. Additionally, Immunofluorescence was employed to examine the impact of ononin on HIF-1α/VEGF pathway in vivo, and its effect on liver function in mice was assessed through biochemistry analysis. RESULTS At a concentration of 25 μM, ononin did not affect the proliferation of lung epithelial cells but inhibited the survival of lung cancer cells. In vitro experiments demonstrated that the combination of ononin and radiation could effectively inhibit the growth of lung cancer cells, induce apoptosis, and suppress the excessive activation of the Hypoxia inducible factor 1 alpha/Vascular endothelial growth factor pathway. In vivo experiments showed that the combination of ononin and radiation reduced the size and proliferation of lung cancer tumors, promoted cancer cell apoptosis, mitigated abnormal activation of the Hypoxia inducible factor 1 alpha pathway, and protected against liver function damage. CONCLUSION This study provides evidence that the combination of AM and its small molecule ononin can enhance the sensitivity of lung cancer to radiation. Additionally, it has been observed that this combination can specifically target HIF-1α and exert its effects. Notably, ononin exhibits the unique ability to protect liver function from damage while simultaneously enhancing the tumor-killing effects of radiation, thereby demonstrating a synergistic and detoxifying role in tumor radiotherapy. These findings contribute to the establishment of a solid basis for the development of novel radiation sensitizers derived from traditional Chinese medicine.
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Affiliation(s)
- Yi-Ming Zhang
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Zhi-Ming Miao
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Ya-Ping Chen
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Zhang-Bo Song
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Yang-Yang Li
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Zhi-Wei Liu
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Gu-Cheng Zhou
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Jing Li
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Liang-Liang Shi
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Yan Chen
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Shang-Zu Zhang
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China
| | - Xiaohui Xu
- Department of Genetics and Cell Biology, Basic Medical College, Qingdao University, PR China
| | - Jin-Peng He
- Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, PR China
| | - Ju-Fang Wang
- Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, PR China
| | - Li-Ying Zhang
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China.
| | - Yong-Qi Liu
- Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese, Medicine Research in Gansu Colleges and Universities, Gansu University of Chinese Medicine, Lanzhou, PR China.
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8
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Sun XG, Chu XH, Godje Godje IS, Liu SY, Hu HY, Zhang YB, Zhu LJ, Wang H, Sui C, Huang J, Shen YJ. Aerobic Glycolysis Induced by mTOR/ HIF-1α Promotes Early Brain Injury After Subarachnoid Hemorrhage via Activating M1 Microglia. Transl Stroke Res 2024; 15:1-15. [PMID: 36385451 DOI: 10.1007/s12975-022-01105-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 10/19/2022] [Accepted: 11/12/2022] [Indexed: 11/18/2022]
Abstract
M1 microglial activation is crucial for the pathogenesis of early brain injury (EBI) following subarachnoid hemorrhage (SAH), and there is growing evidence that glucose metabolism is frequently involved in microglial activation. However, the molecular mechanism of glycolysis and its role in M1 microglial activation in the context of EBI are not yet fully understood. In this study, firstly, the relationship between aerobic glycolysis and M1 microglial activation as well as SAH-induced EBI was researched in vivo. Then, intervention on mammalian target of rapamycin (mTOR) was performed to investigate the effects on glycolysis-dependent M1 microglial activation and EBI and its relationship with hypoxia-inducible factor-1α (HIF-1α) in vivo. Next, Hif-1α was inhibited to analyze its role in aerobic glycolysis, M1 microglial activation, and EBI in vivo. Lastly, both in vivo and in vitro, mTOR inhibition and Hif-1α enhancement were administered simultaneously, and the combined effects were further confirmed again. The results showed that aerobic glycolysis and M1 microglial polarization were increased after SAH, and glycolytic inhibition could attenuate M1 microglial activation and EBI. Inhibition of mTOR reduced glycolysis-dependent M1 microglial polarization and EBI severity by down-regulating HIF-1α expression, while enhancement had the opposite effects. Blockading HIF-1α had the similar effects as suppressing mTOR, while HIF-1α agonist worked against mTOR antagonist when administered simultaneously. In conclusion, the present study showed new evidence that aerobic glycolysis induced by mTOR/HIF-1α might promote EBI after SAH by activating M1 microglia. This finding provided new insights for the treatment of EBI.
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Affiliation(s)
- Xin-Gang Sun
- Department of Neurology, The Second Hospital Affiliated to Shanxi Medical University, Taiyuan, 030000, Shanxi, China.
| | - Xue-Hong Chu
- Shanxi Medical University, Taiyuan, 030000, Shanxi, China
| | | | - Shao-Yu Liu
- Shanxi Medical University, Taiyuan, 030000, Shanxi, China
| | - Hui-Yu Hu
- Shanxi Medical University, Taiyuan, 030000, Shanxi, China
| | - Yi-Bo Zhang
- Shanxi Medical University, Taiyuan, 030000, Shanxi, China
| | - Li-Juan Zhu
- Shanxi Medical University, Taiyuan, 030000, Shanxi, China
| | - Hai Wang
- Shanxi Medical University, Taiyuan, 030000, Shanxi, China
| | - Chen Sui
- Shanxi Medical University, Taiyuan, 030000, Shanxi, China
| | - Juan Huang
- Shanxi Medical University, Taiyuan, 030000, Shanxi, China
| | - Ying-Jie Shen
- Shanxi Medical University, Taiyuan, 030000, Shanxi, China
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9
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Asci H, Savran M, Comlekci S, Sofu MM, Erzurumlu Y, Ozmen O, Kaynak M, Sahin ME, Taner R, Gecin M. Combined Pulsed Magnetic Field and Radiofrequency Electromagnetic Field Enhances MMP-9, Collagen-4, VEGF Synthesis to Improve Wound Healing Via Hif-1α/eNOS Pathway. Aesthetic Plast Surg 2023; 47:2841-2852. [PMID: 37369865 DOI: 10.1007/s00266-023-03450-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023]
Abstract
BACKGROUND The blood supply of the tissue is very important in the acceleration of wound healing. Radiofrequency electromagnetic field (RF) and the pulsed magnetic field (PMF) increase vasodilation to contribute wound healing. The aim of this study was to evaluate the effects of RF and PMF on wound healing via hypoxia-inducible factor-1 alpha (Hif-1α)/endothelial nitric oxide synthase (eNOS) pathway. METHODS Forty-eight rats were divided into 4 groups as sham (wound created only), PMF (27.12 MHz, 12 times a day at 30-min intervals), RF (0.5 mT, continuously) and PMF + RF groups. Wounds were created at 1.5 × 1.5 cm size to the dorsal region, and animals were put into unit. Six animals were killed on days 4 and 7; wound tissues were collected for histopathological, immunohistochemical as collagen-4, cytokeratin, matrix metalloproteinase-9 (MMP-9), vascular endothelial growth factor (VEGF) staining and Hif-1α/eNOS/VEGF expressions. RESULTS On day 4, in addition to increasing VEGF and MMP-9 stainings, connection between intact tissue and scar tissue which was stronger in the RF- and PMF-applied groups was observed. On day 7, epithelization started; inflammatory reaction decreased; collagen production, cytokeratin, VEGF and MMP-9 expression enhanced, especially in the RF + PMF applied group. eNOS, Hif-1α and VEGF expression levels were found to be significantly highest in both days of RF + PMF-applied group. CONCLUSIONS This study revealed that both in vitro RF and PMF applications can cause notable changes in factors that are required for tissue repair on wound healing such as epithelization, connective tissue formation, collagen production and angiogenesis via vasodilatory Hif-1α/eNOS pathway and VEGF signaling. NO LEVEL ASSIGNED This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Halil Asci
- Department of Pharmacology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey.
- Department of Bioengineering, Institute of Science, Suleyman Demirel University, Isparta, Turkey.
| | - Mehtap Savran
- Department of Pharmacology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
- Department of Bioengineering, Institute of Science, Suleyman Demirel University, Isparta, Turkey
| | - Selcuk Comlekci
- Department of Bioengineering, Institute of Science, Suleyman Demirel University, Isparta, Turkey
- Department of Electronics and Communication Engineering, Faculty of Engineering, Suleyman Demirel University, Isparta, Turkey
| | - Mehmet M Sofu
- Department of Bioengineering, Institute of Science, Suleyman Demirel University, Isparta, Turkey
| | - Yalcin Erzurumlu
- Department of Bioengineering, Institute of Science, Suleyman Demirel University, Isparta, Turkey
- Department of Biochemistry, Faculty of Pharmacy, Suleyman Demirel University, Isparta, Turkey
| | - Ozlem Ozmen
- Department of Pathology, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
| | - Mine Kaynak
- Department of Pharmacology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Mehmet E Sahin
- Department of Biomedical Device Technology, Technical Sciences Vocational High School, Isparta University of Applied Sciences, Isparta, Turkey
| | - Rumeysa Taner
- Department of Bioengineering, Institute of Science, Suleyman Demirel University, Isparta, Turkey
| | - Mustafa Gecin
- Department of Electronics and Communication Engineering, Faculty of Engineering, Suleyman Demirel University, Isparta, Turkey
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10
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MacColl Garfinkel A, Mnatsakanyan N, Patel JH, Wills AE, Shteyman A, Smith PJS, Alavian KN, Jonas EA, Khokha MK. Mitochondrial leak metabolism induces the Spemann-Mangold Organizer via Hif-1α in Xenopus. Dev Cell 2023; 58:2597-2613.e4. [PMID: 37673063 PMCID: PMC10840693 DOI: 10.1016/j.devcel.2023.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 06/30/2023] [Accepted: 08/09/2023] [Indexed: 09/08/2023]
Abstract
An instructive role for metabolism in embryonic patterning is emerging, although a role for mitochondria is poorly defined. We demonstrate that mitochondrial oxidative metabolism establishes the embryonic patterning center, the Spemann-Mangold Organizer, via hypoxia-inducible factor 1α (Hif-1α) in Xenopus. Hypoxia or decoupling ATP production from oxygen consumption expands the Organizer by activating Hif-1α. In addition, oxygen consumption is 20% higher in the Organizer than in the ventral mesoderm, indicating an elevation in mitochondrial respiration. To reconcile increased mitochondrial respiration with activation of Hif-1α, we discovered that the "free" c-subunit ring of the F1Fo ATP synthase creates an inner mitochondrial membrane leak, which decouples ATP production from respiration at the Organizer, driving Hif-1α activation there. Overexpression of either the c-subunit or Hif-1α is sufficient to induce Organizer cell fates even when β-catenin is inhibited. We propose that mitochondrial leak metabolism could be a general mechanism for activating Hif-1α and Wnt signaling.
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Affiliation(s)
- Alexandra MacColl Garfinkel
- Pediatric Genomics Discovery Program, Department of Pediatrics and Genetics, Yale University School of Medicine, New Haven, CT 06510, USA; Section of Endocrinology, Department of Internal Medicine, Yale University, New Haven, CT 06510, USA
| | - Nelli Mnatsakanyan
- Department of Cellular and Molecular Physiology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Jeet H Patel
- Department of Biochemistry, University of Washington School of Medicine, Seattle, WA 98195, USA; Program in Molecular and Cellular Biology, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Andrea E Wills
- Department of Biochemistry, University of Washington School of Medicine, Seattle, WA 98195, USA; Institute for Stem Cell and Regenerative Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Amy Shteyman
- Section of Endocrinology, Department of Internal Medicine, Yale University, New Haven, CT 06510, USA
| | - Peter J S Smith
- Institute for Life Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | | | - Elizabeth Ann Jonas
- Section of Endocrinology, Department of Internal Medicine, Yale University, New Haven, CT 06510, USA.
| | - Mustafa K Khokha
- Pediatric Genomics Discovery Program, Department of Pediatrics and Genetics, Yale University School of Medicine, New Haven, CT 06510, USA.
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11
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Li S, Gao Z, Li H, Xu C, Chen B, Zha Q, Yang K, Wang W. Hif-1α/Slit2 Mediates Vascular Smooth Muscle Cell Phenotypic Changes in Restenosis of Bypass Grafts. J Cardiovasc Transl Res 2023; 16:1021-1031. [PMID: 37097589 PMCID: PMC10615989 DOI: 10.1007/s12265-023-10384-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 03/24/2023] [Indexed: 04/26/2023]
Abstract
Vascular smooth muscle cells (VSMCs) are involved in restenosis of bypass grafts and cause artery graft occlusion. This study aimed to explore the role of Slit2 in phenotypic switching of VSMCs and its effect on restenosis of vascular conduits. An animal model of vascular graft restenosis (VGR) was produced in SD rats and assessed by echocardiography. The expression of Slit2 and Hif-1α was measured in vivo and in vitro. After Slit2 overexpression, the migration and proliferation of VSMCs were detected in vitro, and the restenosis rates and phenotype of VSMCs were tested in vivo. The arteries of the VGR model presented significant stenosis, and Slit2 was decreased in VSMCs of the VGR model. In vitro, Slit2 overexpression inhibited the migration and proliferation of VSMCs, but Slit2 knockdown promoted migration and proliferation. Hypoxia induced Hif-1α but reduced Slit2, and Hif-1α negatively regulated Slit2 expression. Moreover, Slit2 overexpression weakened the rate of VGR and maintained the patency of artery bypass grafts, which suppressed the phenotypic switching of VSMCs. Slit2 inhibited the synthetic phenotype transformation to inhibit the migration and proliferation of VSMCs and delayed the VGR via Hif-1α.
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Affiliation(s)
- Sen Li
- Department of Vascular Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Zhiwei Gao
- Department of Vascular Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Haiqing Li
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Chang Xu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Bing Chen
- Department of Vascular Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Qing Zha
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China.
| | - Ke Yang
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Weilin Wang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China.
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China.
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, China.
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, Zhejiang, 310009, China.
- Clinical Medicine Innovation Center of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Disease of Zhejiang University, Hangzhou, Zhejiang, 310009, China.
- Clinical Research Center of Hepatobiliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310009, China.
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310009, China.
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12
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Herrmann A, Meyer AK, Braunschweig L, Wagenfuehr L, Markert F, Kolitsch D, Vukicevic V, Hartmann C, Siebert M, Ehrhart-Bornstein M, Hermann A, Storch A. Notch is Not Involved in Physioxia-Mediated Stem Cell Maintenance in Midbrain Neural Stem Cells. Int J Stem Cells 2023; 16:293-303. [PMID: 37105558 PMCID: PMC10465337 DOI: 10.15283/ijsc22168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 02/10/2023] [Accepted: 03/17/2023] [Indexed: 04/29/2023] Open
Abstract
Background and Objectives The physiological oxygen tension in fetal brains (∼3%, physioxia) is beneficial for the maintenance of neural stem cells (NSCs). Sensitivity to oxygen varies between NSCs from different fetal brain regions, with midbrain NSCs showing selective susceptibility. Data on Hif-1α/Notch regulatory interactions as well as our observations that Hif-1α and oxygen affect midbrain NSCs survival and proliferation prompted our investigations on involvement of Notch signalling in physioxia-dependent midbrain NSCs performance. Methods and Results Here we found that physioxia (3% O2) compared to normoxia (21% O2) increased proliferation, maintained stemness by suppression of spontaneous differentiation and supported cell cycle progression. Microarray and qRT-PCR analyses identified significant changes of Notch related genes in midbrain NSCs after long-term (13 days), but not after short-term physioxia (48 hours). Consistently, inhibition of Notch signalling with DAPT increased, but its stimulation with Dll4 decreased spontaneous differentiation into neurons solely under normoxic but not under physioxic conditions. Conclusions Notch signalling does not influence the fate decision of midbrain NSCs cultured in vitro in physioxia, where other factors like Hif-1α might be involved. Our findings on how physioxia effects in midbrain NSCs are transduced by alternative signalling might, at least in part, explain their selective susceptibility to oxygen.
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Affiliation(s)
- Anne Herrmann
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Anne K. Meyer
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Lena Braunschweig
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Lisa Wagenfuehr
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Franz Markert
- Department of Neurology, University of Rostock, Rostock, Germany
| | - Deborah Kolitsch
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Vladimir Vukicevic
- Molecular Endocrinology, Medical Clinic III, University Clinic Dresden, Technische Universität Dresden, Dresden, Germany
| | - Christiane Hartmann
- Translational Neurodegeneration Section Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Marlen Siebert
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Monika Ehrhart-Bornstein
- Molecular Endocrinology, Medical Clinic III, University Clinic Dresden, Technische Universität Dresden, Dresden, Germany
| | - Andreas Hermann
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- Translational Neurodegeneration Section Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, Rostock, Germany
| | - Alexander Storch
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- Department of Neurology, University of Rostock, Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, Rostock, Germany
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13
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Wang P, Li T, Niu C, Sun S, Liu D. ROS-activated MAPK/ERK pathway regulates crosstalk between Nrf2 and Hif-1α to promote IL-17D expression protecting the intestinal epithelial barrier under hyperoxia. Int Immunopharmacol 2023; 116:109763. [PMID: 36736221 DOI: 10.1016/j.intimp.2023.109763] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 01/12/2023] [Accepted: 01/18/2023] [Indexed: 02/04/2023]
Abstract
Reactive oxygen species (ROS) damage to the intestinal barrier is a side effect of prolonged hyperoxia therapy in neonates, which impairs growth and development of the intestine and promotes intestinal diseases. However, the research on clinical prevention and treatment is lacking. Therefore, we investigated the molecular mechanisms of the neonate intestinal response against hyperoxia-derived ROS to find targets for intestinal barrier damage prevention. Human intestinal epithelial cells were incubated under hyperoxia (85% oxygen) to build an in vitro model. ROS and the mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathway were inhibited to detect the MAPK/ERK pathway, nuclear factor erythroid factor 2-related factor 2 (Nrf2), hypoxia-inducible factor-1α (Hif-1α), and interleukin-17D (IL-17D) expression. Nrf2 was inhibited to detect Hif-1α and IL-17D expression. Hif-1α was inhibited to detect Nrf2, IL-17D, and tight junction proteins expression and apoptosis. Cells were treated with human recombinant IL-17D to detect TNF-α, IL-1β, IL-10, and tight junction proteins expression. ROS, Nrf2, Hif-1α, and IL-17D were upregulated and the MAPK/ERK pathway was activated under hyperoxia. But ROS inhibition downregulated the MAPK/ERK pathway, Nrf2, Hif-1α, and IL-17D. MAPK/ERK pathway inhibition downregulated Nrf2, Hif-1α, and IL-17D. Nrf2 inhibition downregulated Hif-1α and IL-17D. Hif-1α inhibition downregulated Nrf2, IL-17D, tight junction proteins, and exacerbated apoptosis. The recombinant IL-17D downregulated TNF-α, IL-1β, but upregulated IL-10 and tight junction proteins. We concluded that Hyperoxia-generated ROS activated the MAPK/ERK pathway to regulate Nrf2, Hif-1α, and IL-17D expression. Nrf2 and Hif-1α were interdependent and promoted IL-17D. Importantly, Hif-1α and IL-17D expression protected the intestinal epithelial barrier.
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Affiliation(s)
- Pingchuan Wang
- ShengJing Hospital of China Medical University, Department of Gastroenterology and Medical Research Center, Liaoning Key Laboratory of Research and Application of Animal Models for Environmental and Metabolic Diseases, SanHao Street No.36, HePing District, ShenYang, Liaoning 110000, China
| | - Tianming Li
- ShengJing Hospital of China Medical University, Department of Gastroenterology and Medical Research Center, Liaoning Key Laboratory of Research and Application of Animal Models for Environmental and Metabolic Diseases, SanHao Street No.36, HePing District, ShenYang, Liaoning 110000, China
| | - Changping Niu
- ShengJing Hospital of China Medical University, Department of Gastroenterology and Medical Research Center, Liaoning Key Laboratory of Research and Application of Animal Models for Environmental and Metabolic Diseases, SanHao Street No.36, HePing District, ShenYang, Liaoning 110000, China
| | - Siyu Sun
- ShengJing Hospital of China Medical University, Department of Gastroenterology, SanHao Street No.36, HePing District, ShenYang, Liaoning 110000, China
| | - Dongyan Liu
- ShengJing Hospital of China Medical University, Department of Gastroenterology and Medical Research Center, Liaoning Key Laboratory of Research and Application of Animal Models for Environmental and Metabolic Diseases, SanHao Street No.36, HePing District, ShenYang, Liaoning 110000, China.
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14
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Shen X, Li M, Wang C, Liu Z, Wu K, Wang A, Bi C, Lu S, Long H, Zhu G. Hypoxia is fine-tuned by Hif-1α and regulates mesendoderm differentiation through the Wnt/β-Catenin pathway. BMC Biol 2022; 20:219. [PMID: 36199093 PMCID: PMC9536055 DOI: 10.1186/s12915-022-01423-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 09/28/2022] [Indexed: 11/10/2022] Open
Abstract
Background Hypoxia naturally happens in embryogenesis and thus serves as an important environmental factor affecting embryo development. Hif-1α, an essential hypoxia response factor, was mostly considered to mediate or synergistically regulate the effect of hypoxia on stem cells. However, the function and relationship of hypoxia and Hif-1α in regulating mesendoderm differentiation remains controversial. Results We here discovered that hypoxia dramatically suppressed the mesendoderm differentiation and promoted the ectoderm differentiation of mouse embryonic stem cells (mESCs). However, hypoxia treatment after mesendoderm was established promoted the downstream differentiation of mesendoderm-derived lineages. These effects of hypoxia were mediated by the repression of the Wnt/β-Catenin pathway and the Wnt/β-Catenin pathway was at least partially regulated by the Akt/Gsk3β axis. Blocking the Wnt/β-Catenin pathway under normoxia using IWP2 mimicked the effects of hypoxia while activating the Wnt/β-Catenin pathway with CHIR99021 fully rescued the mesendoderm differentiation suppression caused by hypoxia. Unexpectedly, Hif-1α overexpression, in contrast to hypoxia, promoted mesendoderm differentiation and suppressed ectoderm differentiation. Knockdown of Hif-1α under normoxia and hypoxia both inhibited the mesendoderm differentiation. Moreover, hypoxia even suppressed the mesendoderm differentiation of Hif-1α knockdown mESCs, further implying that the effects of hypoxia on the mesendoderm differentiation were Hif-1α independent. Consistently, the Wnt/β-Catenin pathway was enhanced by Hif-1α overexpression and inhibited by Hif-1α knockdown. As shown by RNA-seq, unlike hypoxia, the effect of Hif-1α was relatively mild and selectively regulated part of hypoxia response genes, which fine-tuned the effect of hypoxia on mESC differentiation. Conclusions This study revealed that hypoxia is fine-tuned by Hif-1α and regulates the mesendoderm and ectoderm differentiation by manipulating the Wnt/β-Catenin pathway, which contributed to the understanding of hypoxia-mediated regulation of development. Supplementary Information The online version contains supplementary material available at 10.1186/s12915-022-01423-y.
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Affiliation(s)
- Xiaopeng Shen
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China. .,Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China. .,Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.
| | - Meng Li
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China
| | - Chunguang Wang
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China
| | - Zhongxian Liu
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China
| | - Kun Wu
- Institute of Evolution and Marine Biodiversity, KLMME, Ocean University of China, Qingdao, 266003, Shandong, China
| | - Ao Wang
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China
| | - Chao Bi
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China
| | - Shan Lu
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China
| | - Hongan Long
- Institute of Evolution and Marine Biodiversity, KLMME, Ocean University of China, Qingdao, 266003, Shandong, China
| | - Guoping Zhu
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China.,Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, China
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15
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Wei H, Xiao L, Yao H, Li X, Wang W, Lee Y, Li D, Wei J. Melatonin through blockade of Hif-1α signaling mediates the anti-fibrosis under hypoxia in canine Sertoli cells. Reprod Biol 2022; 22:100677. [PMID: 36152357 DOI: 10.1016/j.repbio.2022.100677] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 06/28/2022] [Accepted: 07/17/2022] [Indexed: 11/28/2022]
Abstract
The hypoxic microenvironment of cryptorchidism is an important factor in the impairment and fibrosis of Sertoli cells which result in blood-testis barrier (BTB) destruction and spermatogenesis loss. Recent studies have shown that melatonin, a well-known pineal hormone exerts beneficial effects against pathological fibrosis in a various of organs. However, it is still unknown whether melatonin can regulate hypoxia-induced fibrosis of Sertoli cells. In this study we evaluate melatonin levels, and its synthesizing enzymes, AANAT and HIOMT expression patterns in canine cryptorchidism and contralateral normal testis. Results show abdominal testes presented low melatonin levels and AANAT and HIOMT expression compared with testes located in the scrotum. Moreover, we established a hypoxia-induced fibrosis model in canine Sertoli cells induced by cobalt chloride (CoCl2) and found that melatonin inhibited the EMT markers expression and ECM production as well as Hif-1α expression of Sertoli cells in a dose-dependent manner. Furthermore, use of Lificiguat (synonyms YC-1, Hif-1α inhibitor) to interfere with the Hif-1α pathway showed a similar effect with melatonin suppression of the fibrosis in Sertoli cells. The results indicate that melatonin supplementation can alleviate the fibrosis process of Sertoli cells caused by hypoxia, which is associated with regulating the inhibition of Hif-1α signaling.
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Affiliation(s)
- Huawei Wei
- Beijing Detector Dog Program Facility of China Customs, Beijing, China
| | - Longfei Xiao
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Hua Yao
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Xiang Li
- RuiLi Detector Dog Program Facility of China Customs, Yunnan, China
| | - Wei Wang
- China-Japan Friendship Hospital, Beijing, China
| | - Yuan Lee
- Beijing Customs of PRC, Beijing, China
| | | | - Jingwen Wei
- Beijing Detector Dog Program Facility of China Customs, Beijing, China.
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16
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Zeng H, Wei B, Liu J, Lu L, Li L, Wang B, Sun M. Hif-1α regulates Tet1-c-Myc binding involved in depression-like behavior in prenatal hypoxia offspring. Neuroscience 2022:S0306-4522(22)00426-2. [PMID: 36041588 DOI: 10.1016/j.neuroscience.2022.08.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/03/2022] [Accepted: 08/12/2022] [Indexed: 11/21/2022]
Abstract
Prenatal hypoxia (PH) is one of the most common adverse stimulation during pregnancy. The brain is fragile in the fetal period and sensitive to hypoxia. The offspring who have experienced PH may be at increased risk of developing neurodevelopmental disorders after birth and various neuropsychiatric diseases after adulthood. In this study, pregnant mice used to generate PH offspring were treated with hypoxia (10.5% oxygen) from gestational day 12.5 to 17.5. Compared with control mice, the birth weight of offspring in the PH group was significantly lower and the male adult offspring exhibited significant depression-like behavior. The expression of the oxygen-sensitive subunit of hypoxia-inducible factor (Hif-1α) was significantly elevated, whereas Ten-eleven translocated methylcytosine dioxygenase 1 (Tet1) and c-Myc, which is closely related to cell proliferation, was significantly decreased in the hippocampus of the male offspring in the PH group. In addition, the PH group showed increased binding of Hif-1α to Tet1, and decreased binding of Tet1 to c-Myc, resulting in increased ubiquitinated degradation of c-Myc and decreased neurogenesis in the hippocampus of the male offspring. These findings suggest that Hif-1α regulates Tet1-c-Myc binding involved in depression-like behavior in PH offspring and Hif-1α can be used as a detection index of stress-related diseases.
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17
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Christoph M, Pflücke C, Mensch M, Augstein A, Jellinghaus S, Ende G, Mierke J, Franke K, Wielockx B, Ibrahim K, Poitz DM. Myeloid PHD2 deficiency accelerates neointima formation via Hif-1α. Mol Immunol 2022; 149:48-58. [PMID: 35724581 DOI: 10.1016/j.molimm.2022.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 06/04/2022] [Accepted: 06/08/2022] [Indexed: 11/26/2022]
Abstract
The key players of the hypoxic response are the hypoxia-inducible factors (Hif), whose α-subunits are tightly regulated by Prolyl-4-hydroxylases (PHD), predominantly by PHD2. Monocytes/Macrophages are involved in atherosclerosis but also restenosis and were found at hypoxic and sites of the lesion. Little is known about the role of the myeloid PHD2 in atherosclerosis and neointima formation. The study aimed to investigate the consequences of a myeloid deficiency of PHD2 in the process of neointima formation using an arterial denudation model. LysM-cre mice were crossed with PHD2fl/fl, PHD2fl/fl/Hif1αfl/fl and PHD2fl/fl/Hif2αfl/fl to get myeloid specific knockout of PHD2 and the Hif-α subunits. Denudation of the femoral artery was performed and animals were fed a western type diet afterwards with analysis of neointima formation 5 and 35 days after denudation. Increased neointima formation in myeloid PHD2 knockouts was observed, which was blunted by double-knockout of PHD2 and Hif1α whereas double knockout of PHD2 and Hif-2α showed comparable lesions to the PHD2 knockouts. Macrophage infiltration was comparable to the neointima formation, suggesting a more inflammatory reaction, and was accompanied by increased intimal VEGF-A expression. Collagen-content inversely correlated to the extent of neointima formation suggesting a destabilization of the plaque. This effect might be triggered by macrophage polarization. Therefore, in vitro results showed a distinct expression pattern in differentially polarized macrophages with high expression of Hif-1α, VEGF and MMP-1 in proinflammatory M1 macrophages. In conclusion, the results show that myeloid Hif-1α is involved in neointima hyperplasia. Our in vivo and in vitro data reveal a central role for this transcription factor in driving plaque-vascularization accompanied by matrix-degradation leading to plaque destabilization.
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Affiliation(s)
- Marian Christoph
- Internal Medicine and Cardiology, Heart Center Dresden, University Hospital at the Technische Universität, Dresden, Germany; Technische Universität, Dresden Campus, Chemnitz, Germany
| | - Christian Pflücke
- Internal Medicine and Cardiology, Heart Center Dresden, University Hospital at the Technische Universität, Dresden, Germany
| | - Matthias Mensch
- Internal Medicine and Cardiology, Heart Center Dresden, University Hospital at the Technische Universität, Dresden, Germany
| | - Antje Augstein
- Internal Medicine and Cardiology, Heart Center Dresden, University Hospital at the Technische Universität, Dresden, Germany
| | - Stefanie Jellinghaus
- Internal Medicine and Cardiology, Heart Center Dresden, University Hospital at the Technische Universität, Dresden, Germany
| | - Georg Ende
- Internal Medicine and Cardiology, Heart Center Dresden, University Hospital at the Technische Universität, Dresden, Germany
| | - Johannes Mierke
- Internal Medicine and Cardiology, Heart Center Dresden, University Hospital at the Technische Universität, Dresden, Germany
| | - Kristin Franke
- Institute of Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Ben Wielockx
- Institute of Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Karim Ibrahim
- Internal Medicine and Cardiology, Heart Center Dresden, University Hospital at the Technische Universität, Dresden, Germany; Technische Universität, Dresden Campus, Chemnitz, Germany
| | - David M Poitz
- Internal Medicine and Cardiology, Heart Center Dresden, University Hospital at the Technische Universität, Dresden, Germany; Institute of Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany.
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18
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Zhongyin Z, Wei W, Juan X, Guohua F. Isoliquiritin apioside relieves intestinal ischemia/reperfusion-induced acute lung injury by blocking Hif-1α-mediated ferroptosis. Int Immunopharmacol 2022; 108:108852. [PMID: 35597117 DOI: 10.1016/j.intimp.2022.108852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 12/12/2022]
Abstract
Isoliquiritin apioside (IA), a critical ingredient of Glycyrrhizae radix et rhizoma, has been unveiled to possess remarkable pharmacological activity against oxidative stress and inflammation. However, the potential roles of IA in intestinal ischemia/reperfusion (I/R)-induced acute lung injury (ALI) have not been reported yet. In the present study, we explored the effects of IA on I/R-induced ALI, and also clarified the possible mechanisms. To mimic intestinal I/R-induced ALI, the mice were subjected to 60 min of intestinal ischemia via clamping of the superior mesenteric artery followed by 60 min of reperfusion. IA was administered orally (20 mg/kg/day and 50 mg/kg/day) for 7 consecutive days before intestinal I/R. Lung epithelial MLE-2 cells were subjected to hypoxia for 2 h and regeneration for 3 h to mimic in vitro ALI. The results showed that IA administration prevented intestinal I/R-induced lung injury, inflammation and edema. Also, IA administration decreased the level of ferroptosis in murine lung tissues challenged with intestinal I/R. In terms of mechanism, IA administration inhibited the protein upregulation of Hif-1α and HO-1 in mice with ALI. In vitro experiments further demonstrated that IA treatment could inhibit the mRNA and protein levels of Hif-1α in hypoxia/regeneration (H/R)-induced MLE-2 cells in a concentration-dependent manner. Hif-1α stabilizer molidustat itself also significantly promoted ferroptosis of MLE-2 cells. And Hif-1α activation increased the mRNA levels of Ptgs2 and Acsl4 but decreased the mRNA level of Gpx4 in H/R-induced MLE-2 cells treated with IA. Taken together, our study unveiled IA could protect against intestinal I/R-induced ALI by decreasing lung epithelial ferroptosis in a Hif-1α-dependent manner.
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Affiliation(s)
- Zhou Zhongyin
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, PR China
| | - Wang Wei
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, PR China
| | - Xiong Juan
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, PR China
| | - Fan Guohua
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, PR China.
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19
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Xu J, Zheng Y, Zhao Y, Zhang Y, Li H, Zhang A, Wang X, Wang W, Hou Y, Wang J. Succinate/IL-1β Signaling Axis Promotes the Inflammatory Progression of Endothelial and Exacerbates Atherosclerosis. Front Immunol 2022; 13:817572. [PMID: 35273600 PMCID: PMC8901997 DOI: 10.3389/fimmu.2022.817572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 01/27/2022] [Indexed: 12/14/2022] Open
Abstract
Inflammation is an important driver of atherosclerosis. Succinate is a new extracellular inflammatory alarm released by activated macrophages. Succinate is sensed by succinate receptor 1 (Sucnr1) and then transferred to effector cells. It is worth exploring whether succinate is capable of facilitating the inflammatory response in atherosclerosis. In this study, we firstly found that arterial serum of Coronary Heart Disease (CHD) patients contained significantly higher succinate and interleukin (IL)-1β than Health control (HC) subjects, and succinate was positively correlated with IL-1β. As demonstrated by the in vitro study, succinate/hypoxia-inducible factor 1α (Hif)-1α/IL-1β signal axis existed and significantly facilitated the inflammatory program in human umbilical vein endothelial cells (HUVECs). Under the coculture, activated macrophages released succinate, which would be transferred to HUVECs via Sucnr1 and then activate Hif-1α to produce a greater amount of IL-1β. Likewise, the aortic sinus’s inflammatory phenotype was found to be more significant within Apoe-/- mice that were injected with succinate. Furthermore, Sucnr1 inhibitor (NF-56-EJ40) could significantly interrupt succinate/IL-1β signal in HUVECs and macrophages. As revealed by this study, glycolytic metabolism following the release of succinate could be found in atherosclerotic pathology, and succinate would drive succinate/IL-1β signal dependent on Sucnr1 and then exacerbate inflammatory responses. Sucnr1 might be a novel target for cutting off the transduction of succinate signal to prevent the inflammation of atherosclerosis.
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Affiliation(s)
- Jingwen Xu
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Yabing Zheng
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Yaqing Zhao
- College of Second Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yujiao Zhang
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Huilin Li
- Cheeloo College of Medicine, Shandong University, Jinan, China
| | - An Zhang
- Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xuehan Wang
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Weizong Wang
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Yinglong Hou
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Jiangrong Wang
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
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20
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Lin H, Chen M, Gao Y, Wang Z, Jin F. Tussilagone protects acute lung injury from PM2.5 via alleviating Hif-1α/NF-κB-mediated inflammatory response. Environ Toxicol 2022; 37:1198-1210. [PMID: 35112795 PMCID: PMC9303425 DOI: 10.1002/tox.23476] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/07/2021] [Accepted: 01/16/2022] [Indexed: 05/06/2023]
Abstract
Environmental pollution, especially particulate matter in the air, is a serious threat to human health. Long-term inhalation of particulate matter with a diameter < 2.5 μm (PM2.5) induced irreversible respiratory and lung injury. However, it is not clear whether temporary exposure to massive PM2.5 would result in epithelial damage and lung injury. More importantly, it is urgent to clarify the mechanisms of PM2.5 cytotoxicity and develop a defensive and therapeutic approach. In this study, we demonstrated that temporary exposure with PM2.5 induced lung epithelial cell apoptosis via promoting cytokines expression and inflammatory factors secretion. The cytotoxicity of PM2.5 could be alleviated by tussilagone (TSL), which is a natural compound isolated from the flower buds of Tussilago farfara. The mechanism study indicated that PM2.5 promoted the protein level of Hif-1α by reducing its degradation mediated by PHD2 binding, which furtherly activated NF-κB signaling and inflammatory response. Meanwhile, TSL administration facilitated the interaction of the Hif-1α/PHD2 complex and restored the Hif-1α protein level increased by PM2.5. When PHD2 was inhibited in epithelial cells, the protective function of TSL on PM2.5 cytotoxicity was attenuated and the expression of cytokines was retrieved. Expectedly, the in vivo study also suggested that temporary PM2.5 exposure led to acute lung injury. TSL treatment could effectively relieve the damage and decrease the expression of inflammatory cytokines by repressing Hif-1α level and NF-κB activation. Our findings provide a new therapeutic strategy for air pollution-related respiratory diseases, and TSL would be a potential preventive medicine for PM2.5 cytotoxicity.
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Affiliation(s)
- Hongwei Lin
- Respiration Department of Tangdu Hospital, Air force Military Medical UniversityXi'anChina
| | - Min Chen
- Respiration Department of Tangdu Hospital, Air force Military Medical UniversityXi'anChina
| | - Yanjun Gao
- Respiration Department of Tangdu Hospital, Air force Military Medical UniversityXi'anChina
| | - Zaiqiang Wang
- Respiration Department of Tangdu Hospital, Air force Military Medical UniversityXi'anChina
| | - Faguang Jin
- Respiration Department of Tangdu Hospital, Air force Military Medical UniversityXi'anChina
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21
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Gawronska-Kozak B, Walendzik K, Machcinska S, Padzik A, Kopcewicz M, Wiśniewska J. Dermal White Adipose Tissue (dWAT) Is Regulated by Foxn1 and Hif-1α during the Early Phase of Skin Wound Healing. Int J Mol Sci 2021; 23:257. [PMID: 35008683 PMCID: PMC8745105 DOI: 10.3390/ijms23010257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/17/2021] [Accepted: 12/23/2021] [Indexed: 12/23/2022] Open
Abstract
Dermal white adipose tissue (dWAT) is involved in the maintenance of skin homeostasis. However, the studies concerning its molecular regulation are limited. In the present paper, we ask whether the introduction of two transcription factors, Foxn1 and Hif-1α, into the post-wounded skin of Foxn1-/- mice regulates dWAT during wound healing (days 3 and 6). We have chosen lentivirus vectors (LVs) as a tool to deliver Foxn1 and Hif-1α into the post-wounded skin. We documented that combinations of both transgenes reduces the number, size and diameter of dermal adipocytes at the wound bed area. The qRT-PCR analysis of pro-adipogenic genes, revealed that LV-Hif-1α alone, or combined with LV-Foxn1, increases the mRNA expression of Pparγ, Glut 4 and Fasn at post-wounding day 6. However, the most spectacular stimulatory effect of Foxn1 and/or Hif-1α was observed for Igf2, the growth factor participating in adipogenic signal transduction. Our data also shows that Foxn1/Hif-1α, at post-wounding day 3, reduces levels of CD68 and MIP-1γ mRNA expression and the percentage of CD68 positive cells in the wound site. In conclusion, the present data are the first to document that Foxn1 and Hif-1α cooperatively (1) regulate dWAT during the proliferative phase of skin wound healing through the Igf2 signaling pathway, and (2) reduce the macrophages content in the wound site.
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Affiliation(s)
- Barbara Gawronska-Kozak
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland; (K.W.); (S.M.); (M.K.); (J.W.)
| | - Katarzyna Walendzik
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland; (K.W.); (S.M.); (M.K.); (J.W.)
| | - Sylwia Machcinska
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland; (K.W.); (S.M.); (M.K.); (J.W.)
| | - Artur Padzik
- Virus Vector Core, Turku Centre for Biotechnology BioCity, 20520 Turku, Finland;
| | - Marta Kopcewicz
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland; (K.W.); (S.M.); (M.K.); (J.W.)
| | - Joanna Wiśniewska
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland; (K.W.); (S.M.); (M.K.); (J.W.)
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22
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Martínez-Bautista G, Martínez-Burguete T, Peña-Marín ES, Jiménez-Martínez LD, Martínez-García R, Camarillo-Coop S, Burggren WW, Álvarez-González CA. Hypoxia- and hyperoxia-related gene expression dynamics during developmental critical windows of the tropical gar Atractosteus tropicus. Comp Biochem Physiol A Mol Integr Physiol 2021; 263:111093. [PMID: 34626804 DOI: 10.1016/j.cbpa.2021.111093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 08/21/2021] [Accepted: 09/29/2021] [Indexed: 12/20/2022]
Abstract
Aquatic hypoxia is both a naturally-occurring and anthropogenically-generated event. Fish species have evolved different adaptations to cope with hypoxic environments, including gill modifications and air breathing. However, little is known about the molecular mechanisms involved in the respiration of embryonic and larval fishes during critical windows of development. We assessed expression of the genes hif-1α, fih-1, nhe1, epo, gr and il8 using the developing tropical gar as a piscine model during three developmental periods (fertilization to hatch, 1 to 6 days post hatch (dph) and 7 to 12 dph) when exposed to normoxia (~7.43 mg/L DO), hypoxia (~2.5 mg/L DO) or hyperoxia (~9.15 mg/L DO). All genes had higher expression when fish were exposed to either hypoxia or hyperoxia during the first two developmental periods. However, fish continuously exposed to hypoxia had increased expression of the six genes by hatching and 6 dph, and by 12 dph only hif-1α still had increased expression. The middle developmental period was the most hypoxia-sensitive, coinciding with several changes in physiology and morphology. The oldest larvae were the most resilient to gene expression change, with little variation in expression of the six genes compared. This study is the first to relate the molecular response of an air-breathing fish to oxygen availability to developmental critical windows and contributes to our understanding of some molecular responses of developing fish to changes in oxygen availability.
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Affiliation(s)
- Gil Martínez-Bautista
- Laboratorio de Acuacultura Tropical, División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico; Developmental Physiology Laboratory, Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas, Denton, TX, United States.
| | - Talhia Martínez-Burguete
- Laboratorio de Acuacultura Tropical, División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico
| | - Emyr Saul Peña-Marín
- Laboratorio de Acuacultura Tropical, División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico
| | - Luis Daniel Jiménez-Martínez
- División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Jalpa de Méndez, Tabasco, Mexico
| | - Rafael Martínez-García
- Laboratorio de Acuacultura Tropical, División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico
| | - Susana Camarillo-Coop
- Laboratorio de Acuacultura Tropical, División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico
| | - Warren W Burggren
- Developmental Physiology Laboratory, Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas, Denton, TX, United States
| | - Carlos Alfonso Álvarez-González
- Laboratorio de Acuacultura Tropical, División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico.
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Machcinska S, Kopcewicz M, Bukowska J, Walendzik K, Gawronska-Kozak B. Impairment of the Hif-1α regulatory pathway in Foxn1-deficient (Foxn1 -/- ) mice affects the skin wound healing process. FASEB J 2021; 35:e21289. [PMID: 33475195 DOI: 10.1096/fj.202001907r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/13/2020] [Accepted: 12/03/2020] [Indexed: 02/06/2023]
Abstract
Hypoxia and hypoxia-regulated factors (eg, hypoxia-inducible factor-1α [Hif-1α], factor inhibiting Hif-1α [Fih-1], thioredoxin-1 [Trx-1], aryl hydrocarbon receptor nuclear translocator 2 [Arnt-2]) have essential roles in skin wound healing. Using Foxn1-/- mice that can heal skin injuries in a unique scarless manner, we investigated the interaction between Foxn1 and hypoxia-regulated factors. The Foxn1-/- mice displayed impairments in the regulation of Hif-1α, Trx-1, and Fih-1 but not Arnt-2 during the healing process. An analysis of wounded skin showed that the skin of the Foxn1-/- mice healed in a scarless manner, displaying rapid re-epithelialization and an increase in transforming growth factor β (Tgfβ-3) and collagen III expression. An in vitro analysis revealed that Foxn1 overexpression in keratinocytes isolated from the skin of the Foxn1-/- mice led to reduced Hif-1α expression in normoxic but not hypoxic cultures and inhibited Fih-1 expression exclusively under hypoxic conditions. These data indicate that in the skin, Foxn1 affects hypoxia-regulated factors that control the wound healing process and suggest that under normoxic conditions, Foxn1 is a limiting factor for Hif-1α.
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Affiliation(s)
- Sylwia Machcinska
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Marta Kopcewicz
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Joanna Bukowska
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Katarzyna Walendzik
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Barbara Gawronska-Kozak
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
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Abstract
Objective To investigate whether the Notch–Hif-1α signaling pathway is involved in liver regeneration. Methods Rats were divided into two groups and treated with daily intraperitoneal injections of saline (control) or the gamma-secretase inhibitor, Fli-06, for 2 days. Two-thirds of the rat livers were resected and rats were later euthanized at specific time points post-resection to analyze the remnant livers. Each group's liver/body weight ratio was calculated, and immunostaining and western blotting were used to determine the cell proliferation marker, PCNA and Ki-67 expression. Real-time PCR and western blotting were used to compare the mRNA expression of Notch homolog-1 (Notch1), hairy and enhancer of split-1 (Hes1), and vascular endothelial growth factor (Vegf), and the protein expression of NICD and HIF-1α, respectively. Results The liver/body weight ratios and number of Ki-67- and PCNA-positive cells were significantly lower in the experimental group than the control group, indicating lower levels of liver regeneration following the disruption of Notch signaling by Fli-06. The Hes1 and Vegf mRNA levels and NICD and HIF-1α protein expression levels were all down-regulated by Fli-06 treatment. Conclusion Notch–Hif-α signaling pathway activation plays an important role in liver regeneration, where it may contribute toward liver cell proliferation.
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Affiliation(s)
- Yanshan Li
- Department of Blood Transfusion, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yunxiuxiu Xu
- Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ruomei Wang
- Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wenxin Li
- Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wenguang He
- Department of General Surgery, Zengcheng People's Hospital, Zengcheng, China
| | - Xinxi Luo
- Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Department of Gastrointestinal Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yibiao Ye
- Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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25
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Børretzen A, Gravdal K, Haukaas SA, Mannelqvist M, Beisland C, Akslen LA, Halvorsen OJ. The epithelial-mesenchymal transition regulators Twist, Slug, and Snail are associated with aggressive tumour features and poor outcome in prostate cancer patients. J Pathol Clin Res 2021; 7:253-270. [PMID: 33605548 PMCID: PMC8073012 DOI: 10.1002/cjp2.202] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/22/2020] [Accepted: 01/08/2021] [Indexed: 12/17/2022]
Abstract
The prognostic importance of transcription factors promoting epithelial-mesenchymal transition (EMT) and angiogenesis has not been well explored in prostate cancer patients with long follow-up, nor the interplay between these factors. The objective of this study was to assess the individual protein expression and co-expression of Twist, Slug (Snai2), Snail (Snai1), and hypoxia-inducible factor-1 alpha (Hif-1α) in prostate cancer in relation to EMT, angiogenesis, hypoxia, tumour features, disease recurrence, and patient survival. Immunohistochemical staining was performed on tissue microarray sections from 338 radical prostatectomies with long follow-up. In addition, 41 cases of prostatic hyperplasia, 33 non-skeletal metastases, 13 skeletal metastases, and 33 castration-resistant prostate carcinomas were included. Our findings were validated in external gene expression data sets. Twist was overexpressed in primary prostate cancer and markedly reduced in distant metastases (p < 0.0005). Strong expression of Twist and Slug was associated with Hif-1α in localised prostate cancer (p ≤ 0.001), and strong Twist was associated with Hif-1α in castration-resistant carcinomas (p = 0.044). Twist, Slug, and increased Snail at the tumour stromal border were associated with vascular factors (p ≤ 0.045). Each of the three EMT-regulating transcription factors were associated with aggressive tumour features and shorter time to recurrence and cancer-specific death. Notably, the co-expression of factors demonstrated an enhanced influence on outcome. In the subgroup of E-cadherinlow carcinomas, strong Slug was associated with shorter time to all end points and was an independent predictor of time to multiple end points, including cancer-specific death (hazard ratio 3.0, p = 0.041). To conclude, we demonstrate an important relation between EMT, hypoxia, and angiogenesis and a strong link between the investigated EMT regulators and aggressive tumour features and poor patient outcome in prostate cancer. Despite the retrospective nature of this long-term study, our findings could have a significant impact on the future treatment of prostate cancer, where tailored therapies might be directed simultaneously against epithelial-mesenchymal phenotypes, angiogenesis, and tumour hypoxia.
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Affiliation(s)
- Astrid Børretzen
- Centre for Cancer Biomarkers CCBIO, Gade Laboratory for Pathology, Department of Clinical MedicineUniversity of BergenBergenNorway
- Department of PathologyHaukeland University HospitalBergenNorway
| | - Karsten Gravdal
- Department of PathologyHaukeland University HospitalBergenNorway
| | - Svein A Haukaas
- Department of Clinical MedicineUniversity of BergenBergenNorway
- Department of UrologyHaukeland University HospitalBergenNorway
| | - Monica Mannelqvist
- Centre for Cancer Biomarkers CCBIO, Gade Laboratory for Pathology, Department of Clinical MedicineUniversity of BergenBergenNorway
| | - Christian Beisland
- Department of Clinical MedicineUniversity of BergenBergenNorway
- Department of UrologyHaukeland University HospitalBergenNorway
| | - Lars A Akslen
- Centre for Cancer Biomarkers CCBIO, Gade Laboratory for Pathology, Department of Clinical MedicineUniversity of BergenBergenNorway
- Department of PathologyHaukeland University HospitalBergenNorway
| | - Ole J Halvorsen
- Centre for Cancer Biomarkers CCBIO, Gade Laboratory for Pathology, Department of Clinical MedicineUniversity of BergenBergenNorway
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Butt UJ, Hassouna I, Fernandez Garcia-Agudo L, Steixner-Kumar AA, Depp C, Barnkothe N, Zillmann MR, Ronnenberg A, Bonet V, Goebbels S, Nave KA, Ehrenreich H. CaMKIIα Expressing Neurons to Report Activity-Related Endogenous Hypoxia upon Motor-Cognitive Challenge. Int J Mol Sci 2021; 22:3164. [PMID: 33804598 PMCID: PMC8003772 DOI: 10.3390/ijms22063164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/16/2021] [Accepted: 03/16/2021] [Indexed: 02/07/2023] Open
Abstract
We previously introduced the brain erythropoietin (EPO) circle as a model to explain the adaptive 'brain hardware upgrade' and enhanced performance. In this fundamental circle, brain cells, challenged by motor-cognitive tasks, experience functional hypoxia, triggering the expression of EPO among other genes. We attested hypoxic cells by a transgenic reporter approach under the ubiquitous CAG promoter, with Hif-1α oxygen-dependent degradation-domain (ODD) fused to CreERT2-recombinase. To specifically focus on the functional hypoxia of excitatory pyramidal neurons, here, we generated CaMKIIα-CreERT2-ODD::R26R-tdTomato mice. Behavioral challenges, light-sheet microscopy, immunohistochemistry, single-cell mRNA-seq, and neuronal cultures under normoxia or hypoxia served to portray these mice. Upon complex running wheel performance as the motor-cognitive task, a distinct increase in functional hypoxic neurons was assessed immunohistochemically and confirmed three-dimensionally. In contrast, fear conditioning as hippocampal stimulus was likely too short-lived to provoke neuronal hypoxia. Transcriptome data of hippocampus under normoxia versus inspiratory hypoxia revealed increases in CA1 CaMKIIα-neurons with an immature signature, characterized by the expression of Dcx, Tbr1, CaMKIIα, Tle4, and Zbtb20, and consistent with accelerated differentiation. The hypoxia reporter response was reproduced in vitro upon neuronal maturation. To conclude, task-associated activity triggers neuronal functional hypoxia as a local and brain-wide reaction mediating adaptive neuroplasticity. Hypoxia-induced genes such as EPO drive neuronal differentiation, brain maturation, and improved performance.
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Affiliation(s)
- Umer Javed Butt
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (U.J.B.); (I.H.); (L.F.G.-A.); (A.A.S.-K.); (N.B.); (M.R.Z.); (A.R.); (V.B.)
| | - Imam Hassouna
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (U.J.B.); (I.H.); (L.F.G.-A.); (A.A.S.-K.); (N.B.); (M.R.Z.); (A.R.); (V.B.)
| | - Laura Fernandez Garcia-Agudo
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (U.J.B.); (I.H.); (L.F.G.-A.); (A.A.S.-K.); (N.B.); (M.R.Z.); (A.R.); (V.B.)
| | - Agnes A. Steixner-Kumar
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (U.J.B.); (I.H.); (L.F.G.-A.); (A.A.S.-K.); (N.B.); (M.R.Z.); (A.R.); (V.B.)
| | - Constanze Depp
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (C.D.); (S.G.); (K.-A.N.)
| | - Nadine Barnkothe
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (U.J.B.); (I.H.); (L.F.G.-A.); (A.A.S.-K.); (N.B.); (M.R.Z.); (A.R.); (V.B.)
| | - Matthias R. Zillmann
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (U.J.B.); (I.H.); (L.F.G.-A.); (A.A.S.-K.); (N.B.); (M.R.Z.); (A.R.); (V.B.)
| | - Anja Ronnenberg
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (U.J.B.); (I.H.); (L.F.G.-A.); (A.A.S.-K.); (N.B.); (M.R.Z.); (A.R.); (V.B.)
| | - Viktoria Bonet
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (U.J.B.); (I.H.); (L.F.G.-A.); (A.A.S.-K.); (N.B.); (M.R.Z.); (A.R.); (V.B.)
| | - Sandra Goebbels
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (C.D.); (S.G.); (K.-A.N.)
| | - Klaus-Armin Nave
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (C.D.); (S.G.); (K.-A.N.)
| | - Hannelore Ehrenreich
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany; (U.J.B.); (I.H.); (L.F.G.-A.); (A.A.S.-K.); (N.B.); (M.R.Z.); (A.R.); (V.B.)
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27
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Wang N, Muhetaer G, Zhang X, Yang B, Wang C, Zhang Y, Wang X, Zhang J, Wang S, Zheng Y, Zhang F, Wang Z. Sanguisorba officinalis L. Suppresses Triple-Negative Breast Cancer Metastasis by Inhibiting Late-Phase Autophagy via Hif-1α/Caveolin-1 Signaling. Front Pharmacol 2020; 11:591400. [PMID: 33381039 PMCID: PMC7768086 DOI: 10.3389/fphar.2020.591400] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/13/2020] [Indexed: 12/13/2022] Open
Abstract
Sanguisorba officinalis L. (SA) is a common herb for cancer treatment in the clinic, particularly during the consolidation phase to prevent occurrence or metastasis. Nevertheless, there are limited studies reporting the molecular mechanisms about its anti-metastatic function. It is well demonstrated that autophagy is one of the critical mechanisms accounting for metastasis and anti-cancer pharmacological actions of Chinese herbs. On the threshold, the regulatory effects and molecular mechanisms of SA in suppressing autophagy-related breast cancer metastasis were investigated in this study. In vitro findings demonstrated that SA potently suppressed the proliferation, colony formations well as metastasis process in triple-negative breast cancer. Network and biological analyses predicted that SA mainly targeted caveolin-1 (Cav-1) to induce anti-metastatic effects, and one of the core mechanisms was via regulation of autophagy. Further experiments—including western blotting, transmission electron microscopy, GFP-mRFP-LC3 immunofluorescence, and lysosomal-activity detection—validated SA as a potent late-stage autophagic inhibitor by increasing microtubule-associated light chain 3-II (LC3-II) conversion, decreasing acidic vesicular-organelle formation, and inducing lysosomal dysfunction even under conditions of either starvation or hypoxia. Furthermore, the anti-autophagic and anti-metastatic activity of SA was Cav-1-dependent. Specifically, Cav-1 knockdown significantly facilitated SA-mediated inhibition of autophagy and metastasis. Furthermore, hypoxia inducible factor-1α (Hif-1α) overexpression attenuated the SA-induced inhibitory activities on Cav-1, autophagy, and metastasis, indicating that SA may have inhibited autophagy-related metastasis via Hif-1α/Cav-1 signaling. In both mouse breast cancer xenograft and zebrafish xenotransplantation models, SA inhibited breast cancer growth and inhibited late-phase autophagy in vivo, which was accompanied by suppression of Hif-1α/Cav-1 signaling and the epithelial-mesenchymal transition. Overall, our findings not only indicate that SA acts as a novel late-phase autophagic inhibitor with anti-metastatic activities in triple-negative breast cancer, but also highlight Cav-1 as a regulator in controlling late-phase autophagic activity.
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Affiliation(s)
- Neng Wang
- The Research Center for Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Gulizeba Muhetaer
- The Research Center for Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Xiaotong Zhang
- The Research Center for Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Bowen Yang
- The Research Center for Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China.,Integrative Research Laboratory of Breast Cancer, The Second Clinical College, Guangzhou University of Chinese Medicine, Guangdong, China.,Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Academy of Chinese Medical Sciences, Guangdong Provincial Hospital of Chinese Medicine, Guangdong, China
| | - Caiwei Wang
- The Research Center for Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Yu Zhang
- The Research Center for Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Xuan Wang
- Integrative Research Laboratory of Breast Cancer, The Second Clinical College, Guangzhou University of Chinese Medicine, Guangdong, China.,Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Academy of Chinese Medical Sciences, Guangdong Provincial Hospital of Chinese Medicine, Guangdong, China
| | - Juping Zhang
- Integrative Research Laboratory of Breast Cancer, The Second Clinical College, Guangzhou University of Chinese Medicine, Guangdong, China.,Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Academy of Chinese Medical Sciences, Guangdong Provincial Hospital of Chinese Medicine, Guangdong, China
| | - Shengqi Wang
- Integrative Research Laboratory of Breast Cancer, The Second Clinical College, Guangzhou University of Chinese Medicine, Guangdong, China.,Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Academy of Chinese Medical Sciences, Guangdong Provincial Hospital of Chinese Medicine, Guangdong, China
| | - Yifeng Zheng
- Integrative Research Laboratory of Breast Cancer, The Second Clinical College, Guangzhou University of Chinese Medicine, Guangdong, China.,Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Academy of Chinese Medical Sciences, Guangdong Provincial Hospital of Chinese Medicine, Guangdong, China
| | - Fengxue Zhang
- The Research Center for Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangdong, China
| | - Zhiyu Wang
- Integrative Research Laboratory of Breast Cancer, The Second Clinical College, Guangzhou University of Chinese Medicine, Guangdong, China.,Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Academy of Chinese Medical Sciences, Guangdong Provincial Hospital of Chinese Medicine, Guangdong, China
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28
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Sundaramurthi H, Roche SL, Grice GL, Moran A, Dillion ET, Campiani G, Nathan JA, Kennedy BN. Selective Histone Deacetylase 6 Inhibitors Restore Cone Photoreceptor Vision or Outer Segment Morphology in Zebrafish and Mouse Models of Retinal Blindness. Front Cell Dev Biol 2020; 8:689. [PMID: 32984302 PMCID: PMC7479070 DOI: 10.3389/fcell.2020.00689] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 07/07/2020] [Indexed: 12/19/2022] Open
Abstract
Blindness arising from retinal or macular degeneration results in significant social, health and economic burden. While approved treatments exist for neovascular (‘wet’) age-related macular degeneration, new therapeutic targets/interventions are needed for the more prevalent atrophic (‘dry’) form of age-related macular degeneration. Similarly, in inherited retinal diseases, most patients have no access to an effective treatment. Although macular and retinal degenerations are genetically and clinically distinct, common pathological hallmarks can include photoreceptor degeneration, retinal pigment epithelium atrophy, oxidative stress, hypoxia and defective autophagy. Here, we evaluated the potential of selective histone deacetylase 6 inhibitors to preserve retinal morphology or restore vision in zebrafish atp6v0e1–/– and mouse rd10 models. Histone deacetylase 6 inhibitor, tubastatin A-treated atp6v0e1–/– zebrafish show marked improvement in photoreceptor outer segment area (44.7%, p = 0.027) and significant improvement in vision (8-fold, p ≤ 0.0001). Tubastatin A-treated rd10/rd10 retinal explants show a significantly (p = 0.016) increased number of outer-segment labeled cone photoreceptors. In vitro, ATP6V0E1 regulated HIF-1α activity, but significant regulation of HIF-1α by histone deacetylase 6 inhibition in the retina was not detected. Proteomic profiling identified ubiquitin-proteasome, phototransduction, metabolism and phagosome as pathways, whose altered expression correlated with histone deacetylase 6 inhibitor mediated restoration of vision.
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Affiliation(s)
- Husvinee Sundaramurthi
- UCD Conway Institute, University College Dublin, Dublin, Ireland.,UCD School of Biomolecular and Biomedical Science, University College Dublin, Dublin, Ireland.,Systems Biology Ireland, University College Dublin, Dublin, Ireland.,UCD School of Medicine, University College Dublin, Dublin, Ireland
| | - Sarah L Roche
- School of Biochemistry, University College Cork, Cork, Ireland
| | - Guinevere L Grice
- Cambridge Institute of Therapeutic Immunology & Infectious Disease, University of Cambridge, Cambridge, United Kingdom
| | - Ailis Moran
- UCD Conway Institute, University College Dublin, Dublin, Ireland.,UCD School of Biomolecular and Biomedical Science, University College Dublin, Dublin, Ireland
| | - Eugene T Dillion
- UCD School of Biomolecular and Biomedical Science, University College Dublin, Dublin, Ireland.,Mass Spectrometry Resource, UCD Conway Institute, University College Dublin, Dublin, Ireland
| | - Giuseppe Campiani
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence, University of Siena, Siena, Italy
| | - James A Nathan
- Cambridge Institute of Therapeutic Immunology & Infectious Disease, University of Cambridge, Cambridge, United Kingdom
| | - Breandán N Kennedy
- UCD Conway Institute, University College Dublin, Dublin, Ireland.,UCD School of Biomolecular and Biomedical Science, University College Dublin, Dublin, Ireland
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29
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Fridman IA, Ponomarenko EA, Makarova OV, Postovalova EA, Zolotova NA, Khochanskiy DN, Mkhitarov VA, Tsvetkov IS, Kosyreva AM. Morphological Characteristic of Melanoma B16 Progression in C57BL/6 Mice with High and Low Resistance to Hypoxia. Bull Exp Biol Med 2020; 168:390-4. [PMID: 31940130 DOI: 10.1007/s10517-020-04716-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Indexed: 10/25/2022]
Abstract
The features of B16 melanoma progression in male C57BL/6 mice with initially high and low resistance to hypoxia were studied. To assess the resistance to hypoxia, the mice were placed in a low-pressure chamber at a simulated altitude of 10,000 m. One month after testing, B16 melanoma was inoculated to high- and low-resistant animals. In 19 days after melanoma transplantation, the severity of melanoma progression was assessed by morphological and immunofluorescent methods. The expression of vegf-a and hif-1a in the liver of melanomabearing and control mice was evaluated by real-time PCR. Tumor growth progression was more pronounced in low-resistant mice, which was seen from high weight of the primary tumor node, relative necrosis area, proliferation rates (mitotic index and number of Ki-67+ cells), and expression of vegf-a gene in the liver. In high-resistant to hypoxia animals, the number of caspase-3+ cells dying by apoptosis was higher. The data on more rapid melanoma progression in mice with low resistance to hypoxia should be considered during the search of new prognostic markers and methods for therapy of malignant neoplasms.
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Ding W, Xu C, Zhang Y, Chen H. Advances in the understanding of the role of type-H vessels in the pathogenesis of osteoporosis. Arch Osteoporos 2020; 15:5. [PMID: 31897773 DOI: 10.1007/s11657-019-0677-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 12/02/2019] [Indexed: 02/03/2023]
Abstract
BACKGROUND Angiogenesis in the bone and its role in bone metabolic plays a fundamental role in the pathology of osteoporosis. Type-H vessels have been reported to exhibit distinct morphological, molecular, and functional properties. This review is aimed to illustrate the relationship between type-H vessels in the bone and bone metabolism. METHODS This manuscript reviews the articles on in vitro and in vivo experiments concerning the topic of type-H vessels and osteoporosis, and other researches in the area published by the author within the time frame from 2014 to 2019. RESULTS Current literatures have demonstrated that age-related loss of type-H vessels plays a critical role in the pathogenesis of osteoporosis. Impaired bone mass can be reserved by enhancing the formation of type-H vessels. Activation of the Notch and Hif-1α signaling pathway in bone tissue and exogenous PDGF-BB treatment increase the number of type-H vessels, along with the restoration of bone mass. The effects of osteoblasts and low-intensity pulsed ultrasound (LIPUS) on type-H vessels remain to be further studied. CONCLUSIONS These studies support unique functions for type-H vessels in the bone that may enable new therapeutic approaches to osteoporosis.
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Zhu S, Li W, Yang X, Yu W, Rao T, Ruan Y, Ning J, Yuan R, Li H, Jiang K, Li C, Cheng F. Effects of autophagy on the spermatogonia of chronic hypoxic mice. Am J Transl Res 2018; 10:4119-4129. [PMID: 30662655 PMCID: PMC6325515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 11/04/2018] [Indexed: 06/09/2023]
Abstract
Varicocele (VC) is a common cause of male infertility. An increasing number of studies have confirmed that chronic hypoxia plays an important role in male infertility caused by VC. Our previous study suggested that autophagy may have a crucial function in VC. Whether autophagy plays an important role in hypoxic spermatogonia remains unknown. We established a new method to study VC by culturing spermatogonia under hypoxic conditions to simulate the chronic hypoxic environment of VC. Moreover, the effects of autophagy on hypoxic spermatogonia were observed by regulating autophagy. Spermatogonia from GC-1 spg mice were cultured in vitro in chronic hypoxic conditions (2% O2, 93% N2, 5% CO2) with a tri-gas incubator. Cells were separately cultured under normal oxygen and hypoxic conditions, and then, the autophagy blocker drug LY294002 was subsequently administered. Cytoactivity and proliferation were tested by CCK8 assays. Cells cultured in hypoxic conditions were divided into the hypoxia for 24 h, 48 h, and 72 h groups and the LY294002+hypoxia for 24 h, 48 h, and 72 h groups. Hoechst staining and flow cytometry/Annexin-V-FITC/PI staining were used to detect cell apoptosis, while transmission electron microscopy was used to observe the structure of the spermatogonia. Western blot analysis was used to observe the expression of Hif-1α, Beclin-1, LC3, SOD2, GPX4, and Cyt C. As the hypoxia time increased, CCK8 detection showed that the cytoactivity of the spermatogonia was suppressed. After administration of the inhibitor LY294002, the inhibition ratio of the spermatogonia increased. As the hypoxia time was prolonged, the apoptosis index of spermatogonia increased. After administration of LY294002, the apoptosis index increased significantly. Transmission electron microscopy showed that there were abundant structurally abnormal mitochondria and autophagosomes and autolysosomes in hypoxic spermatogonia. In addition, LY294002 reduced the expression of autophagosomes and autophagosomes, but the number of abnormal mitochondria and vacuoles in hypoxic cells increased significantly. As the hypoxia time was prolonged, the expression levels of Hif-1α, Beclin-1, LC3 II/LC3-I, and Cyt C increased gradually, but there were no significant changes in SOD2 and GPX4. After administration of LY294002, the expression levels of Beclin-1, LC3 II/LC3-I, and GPX4 significantly decreased, but Cyt C significantly increased. Thus, chronic hypoxia decreases cytoactivity and proliferation of spermatogonia. Moreover, hypoxia damages the mitochondria and other organelles. At the same time, hypoxia activates the autophagic system to clear these damaged organelles. The inhibition of autophagy in spermatogonia under chronic hypoxic conditions prevents the removal of damaged mitochondria and eventually results in a significant decrease in the antioxidant system molecule GPX4, rather than SOD2, and a significant increase in the apoptosis rate.
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Affiliation(s)
- Shaoming Zhu
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Wei Li
- Department of Anesthesiology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Xiao Yang
- Department of Gynaecology and Obstetrics, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Weimin Yu
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Ting Rao
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Yuan Ruan
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Jinzhuo Ning
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Run Yuan
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Haoyong Li
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Kun Jiang
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Chenglong Li
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
| | - Fan Cheng
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan 430060, China
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Dzhalilova DS, Diatroptov ME, Tsvetkov IS, Makarova OV, Kuznetsov SL. Expression of Hif-1α, Nf-κb, and Vegf Genes in the Liver and Blood Serum Levels of HIF-1α, Erythropoietin, VEGF, TGF-β, 8-Isoprostane, and Corticosterone in Wistar Rats with High and Low Resistance to Hypoxia. Bull Exp Biol Med 2018; 165:781-785. [PMID: 30353332 DOI: 10.1007/s10517-018-4264-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Indexed: 10/28/2022]
Abstract
We studied the expression of Hif-1α, Nf-κb, and Vegf genes in the liver and serum levels of HIF-1α, erythropoietin, VEGF, TGF-β, 8-isoprostane, and corticosterone in Wistar rats with different resistance to hypoxia in 5 and 90 min after acute exposure to hypobaric hypoxia. In 5 min after hypoxic exposure, Hif-1α expression in the liver and serum levels of erythropoietin, VEGF, and TGF-β in high-resistant rats were higher than in low-resistant animals. In highresistant rats, the increment in expression of Nf-κb gene responsible for the control over the inflammatory processes was more pronounced than in low-resistant animals. In 90 min after hypoxic exposure, the serum levels of HIF-1α, erythropoietin, VEGF, and TGF-β returned to normal in high-resistant rats, while in low-resistant animals, an increase in 8-isoprostane and TGF-β concentrations was observed. The rats with different resistance to hypoxia were characterized by different changes in biomolecular parameters determining predilection to inflammatory diseases.
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Affiliation(s)
| | | | - I S Tsvetkov
- Research Institute of Human Morphology, Moscow, Russia
| | - O V Makarova
- Research Institute of Human Morphology, Moscow, Russia
| | - S L Kuznetsov
- I. M. Sechenov First Moscow State Medical University, Moscow, Russia
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Han J, Jackson D, Holm J, Turner K, Ashcraft P, Wang X, Cook B, Arning E, Genta RM, Venuprasad K, Souza RF, Sweetman L, Theiss AL. Elevated d-2-hydroxyglutarate during colitis drives progression to colorectal cancer. Proc Natl Acad Sci U S A 2018; 115:1057-62. [PMID: 29339485 DOI: 10.1073/pnas.1712625115] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
d-2-hydroxyglutarate (D2HG) is produced in the tricarboxylic acid cycle and is quickly converted to α-ketoglutarate by d-2-hydroxyglutarate dehydrogenase (D2HGDH). In a mouse model of colitis-associated colon cancer (CAC), urine level of D2HG during colitis correlates positively with subsequent polyp counts and severity of dysplasia. The i.p. injection of D2HG results in delayed recovery from colitis and severe tumorigenesis. The colonic expression of D2HGDH is decreased in ulcerative colitis (UC) patients at baseline who progress to cancer. Hypoxia-inducible factor (Hif)-1α is a key regulator of D2HGDH transcription. Our study identifies urine D2HG and tissue D2HGDH expression as biomarkers to identify patients at risk for progressing from colitis to cancer. The D2HG/D2HGDH pathway provides potential therapeutic targets for the treatment of CAC.
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Leung E, Cairns RA, Chaudary N, Vellanki RN, Kalliomaki T, Moriyama EH, Mujcic H, Wilson BC, Wouters BG, Hill R, Milosevic M. Metabolic targeting of HIF-dependent glycolysis reduces lactate, increases oxygen consumption and enhances response to high-dose single-fraction radiotherapy in hypoxic solid tumors. BMC Cancer 2017; 17:418. [PMID: 28619042 PMCID: PMC5473006 DOI: 10.1186/s12885-017-3402-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 06/02/2017] [Indexed: 11/17/2022] Open
Abstract
Background A high rate of glycolysis leading to elevated lactate content has been linked to poor clinical outcomes in patients with head and neck and cervical cancer treated with radiotherapy. Although the biological explanation for this relationship between lactate and treatment response remains unclear, there is a continued interest in evaluating strategies of targeting metabolism to enhance the effectiveness of radiotherapy. The goal of this study was to investigate the effect of metabolic-targeting through HIF-1α inhibition and the associated changes in glycolysis, oxygen consumption and response on the efficacy of high-dose single-fraction radiotherapy (HD-SFRT). Methods HIF-1α wild-type and HIF-1α knockdown FaDu and ME180 xenograft tumors were grown in the hind leg of mice that were placed in an environmental chamber and exposed to different oxygen conditions (air-breathing and hypoxia). Ex vivo bioluminescence microscopy was used to measure lactate and ATP levels and the hypoxic fraction was measured using EF5 immunohistochemical staining. The oxygen consumption rate (OCR) in each cell line in response to in vitro hypoxia was measured using an extracellular flux analyzer. Tumor growth delay in vivo was measured following HD-SFRT irradiation of 20 Gy. Results Targeting HIF-1α reduced lactate content, and increased both oxygen consumption and hypoxic fraction in these tumors after exposure to short-term continuous hypoxia. Tumors with intact HIF-1α subjected to HD-SFRT immediately following hypoxia exposure were less responsive to treatment than tumors without functional HIF-1α, and tumors irradiated under air breathing conditions regardless of HIF-1α status. Conclusions Blocking the HIF1 response during transient hypoxic stress increased hypoxia, reduced lactate levels and enhanced response to HD-SFRT. This strategy of combining hypofractionated radiotherapy with metabolic reprogramming to inhibit anaerobic metabolism may increase the efficacy of HD-SFRT through increased oxygen consumption and complementary killing of radiosensitive and hypoxic, radioresistant cells. Electronic supplementary material The online version of this article (doi:10.1186/s12885-017-3402-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Eric Leung
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre and Odette Cancer Centre, Toronto, Canada.,Department of Radiation Oncology, University of Toronto, Toronto, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Rob A Cairns
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Naz Chaudary
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Ravi N Vellanki
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Tuula Kalliomaki
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Eduardo H Moriyama
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Hilda Mujcic
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Brian C Wilson
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Bradly G Wouters
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada.,Department of Radiation Oncology, University of Toronto, Toronto, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Richard Hill
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada.,Department of Radiation Oncology, University of Toronto, Toronto, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Michael Milosevic
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Canada. .,Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada. .,Department of Radiation Oncology, University of Toronto, Toronto, Canada.
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Lv B, Hua T, Li F, Han J, Fang J, Xu L, Sun C, Zhang Z, Feng Z, Jiang X. Hypoxia-inducible factor 1 α protects mesenchymal stem cells against oxygen-glucose deprivation-induced injury via autophagy induction and PI3K/AKT/mTOR signaling pathway. Am J Transl Res 2017; 9:2492-2499. [PMID: 28559999 PMCID: PMC5446531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 04/18/2017] [Indexed: 06/07/2023]
Abstract
Mesenchymal stem cell (MSC) transplantation is a promising therapeutic strategy for myocardial infarction. The survival rate of the grafted MSCs is limited by the conditions of hypoxia and low nutrient levels. In this study, we investigated the role of hypoxia-inducible factor 1 alpha (Hif-1α) in oxygen-glucose deprivation (OGD)-induced injury in MSCs. Hif-1α was overexpressed or suppressed in MSCs by transfection with a Hif-1α expressing vector or Hif-1α-specific siRNA, respectively. Then MSCs were exposed to OGD, and the changes in cell viability, cell cycle distribution and apoptosis were respectively monitored by MTT assay and flow cytometry. Additionally, expression levels of Beclin1, LC3 I and LC3 II, as well phosphorylation of PI3K, AKT and mTOR were detected by RT-PCR and Western blotting. The results indicated that Hif-1α overexpression improved cell viability, reduced G1 phase cells accumulation, and suppressed apoptosis under OGD condition (P<0.05). Beclin1 expression and the LC3 II/LC3 I ratio were increased by Hif-1α overexpression, and were decreased by Hif-1α knock-down (P<0.05). In addition, PI3K, AKT and mTOR were inactivated by Hif-1α overexpression, and phosphorylated by Hif-1α knock-down (P<0.05). In conclusion, these data suggest that Hif-1α overexpression protects MSCs from OGD-induced injury via a mechanism in which autophagy and PI3K/AKT/mTOR pathway are implicated.
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Affiliation(s)
- Bingke Lv
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University; The National Key Clinical Specialty; The Engineering Technology Research Center of Education Ministry of China; Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou 510280, China
| | - Tian Hua
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University; The National Key Clinical Specialty; The Engineering Technology Research Center of Education Ministry of China; Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou 510280, China
| | - Feng Li
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University; The National Key Clinical Specialty; The Engineering Technology Research Center of Education Ministry of China; Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou 510280, China
| | - Jianbang Han
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University; The National Key Clinical Specialty; The Engineering Technology Research Center of Education Ministry of China; Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou 510280, China
| | - Jie Fang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University; The National Key Clinical Specialty; The Engineering Technology Research Center of Education Ministry of China; Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou 510280, China
| | - Limin Xu
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University; The National Key Clinical Specialty; The Engineering Technology Research Center of Education Ministry of China; Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou 510280, China
| | - Chengmei Sun
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University; The National Key Clinical Specialty; The Engineering Technology Research Center of Education Ministry of China; Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou 510280, China
| | - Zhongfei Zhang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University; The National Key Clinical Specialty; The Engineering Technology Research Center of Education Ministry of China; Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou 510280, China
| | - Zhiming Feng
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University; The National Key Clinical Specialty; The Engineering Technology Research Center of Education Ministry of China; Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou 510280, China
| | - Xiaodan Jiang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University; The National Key Clinical Specialty; The Engineering Technology Research Center of Education Ministry of China; Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou 510280, China
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Lv B, Li F, Han J, Fang J, Xu L, Sun C, Hua T, Zhang Z, Feng Z, Jiang X. Hif-1α Overexpression Improves Transplanted Bone Mesenchymal Stem Cells Survival in Rat MCAO Stroke Model. Front Mol Neurosci 2017; 10:80. [PMID: 28424584 PMCID: PMC5372780 DOI: 10.3389/fnmol.2017.00080] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 03/07/2017] [Indexed: 01/22/2023] Open
Abstract
Bone mesenchymal stem cells (BMSCs) death after transplantation is a serious obstacle impacting on the outcome of cell therapy for cerebral infarction. This study was aimed to investigate whether modification of BMSCs with hypoxia-inducible factor 1α (Hif-1α) could enhance the survival of the implanted BMSCs. BMSCs were isolated from Wistar rats, and were infected with Hif-1α-GFP lentiviral vector or Hif-1α siRNA. The modified BMSCs were exposed to oxygen-glucose deprivation (OGD) condition, cellular viability and apoptosis were then assessed. An inhibitor of AMPK (compound C) was used to detect whether AMPK and mTOR were implicated in the functions of Hif-1α on BMSCs survival. Besides, ultrastructure of BMSCs was observed and the expression of autophagy markers was measured. The modified BMSCs were transplanted into middle cerebral artery occlusion (MCAO) model of rats, and the cerebral infarction volume and neurological function was assessed. The results indicated that Hif-1α overexpression protected OGD induced injury by promoting cellular viability and inhibiting apoptosis. AMPK was activated while mTOR was inactivated by Hif-1α overexpression, and that might be through which Hif-1α functioned BMSCs survival. Hif-1α overexpression promoted autophagy; more important, compound C abolished the induction of Hif-1α on autophagy. Transplantation of the overexpressed Hif-1α of BMSCs into the MCAO rats reduced brain infarct volume and improved neurobehavioral outcome; besides, it inhibited pro-inflammatory cytokines generation while promoted neurotrophin secretion. In conclusion, Hif-1α might be contributed in the survival of BMSCs by regulating the activation of AMPK and mTOR, as well as by promoting autophagy.
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Affiliation(s)
- Bingke Lv
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou, China
| | - Feng Li
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou, China
| | - Jianbang Han
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou, China
| | - Jie Fang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou, China
| | - Limin Xu
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou, China
| | - Chengmei Sun
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou, China
| | - Tian Hua
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou, China
| | - Zhongfei Zhang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou, China
| | - Zhiming Feng
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou, China
| | - Xiaodan Jiang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and RegenerationGuangzhou, China
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Huang CX, Chen N, Wu XJ, He Y, Huang CH, Liu H, Wang WM, Wang HL. Zebrafish let-7b acts downstream of hypoxia-inducible factor-1α to assist in hypoxia-mediated cell proliferation and cell cycle regulation. Life Sci 2017; 171:21-29. [PMID: 28077310 DOI: 10.1016/j.lfs.2017.01.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 01/06/2017] [Accepted: 01/06/2017] [Indexed: 01/13/2023]
Abstract
AIMS Hypoxia-inducible factor-1α (HIF-1α) is a transcriptional regulator of cellular responses to hypoxic stress. MicroRNAs (miRNAs) play an essential role in hypoxia-mediated cellular responses. Previous studies have identified some let-7 family members as hypoxia-regulated miRNAs (HRMs). In the present study, we aimed to investigate whether zebrafish let-7b/7f contribute cellular hypoxic response in a Hif-1α-dependent manner. MAIN METHODS Stable suppression of zebrafish hif-1α was achieved by microinjection of an optimized short-hairpin RNA (shRNA) expression vector. Next-generation sequencing was conducted to characterize miRNA and mRNA expression profiles. MiRNA promoter analysis and target detection was performed by dual-luciferase assay. Quantitative real-time PCR (qRT-PCR) and western blot were used to determine the expression of let-7b/7f, Hif-1α and Foxh1. Proliferation of ZF4 cells was examined using Cell Counting Kit-8 (CCK-8) and cell cycle progression was analyzed by flow cytometry assay. KEY FINDINGS Correlation between 7 miRNAs and 76 putative targets was identified based on integrated analysis of miRNA-mRNA profiles. Let-7b and let-7f were further considered as potential HRMs, with let-7b further validated as Hif-1α up-regulated. In addition, Forkhead-box H1 (Foxh1) was confirmed as a bona fide downstream target of let-7b. Furthermore, overexpression of both let-7b and let-7f repressed cell proliferation through blocking cell cycle progression of the G1-S transition. SIGNIFICANCE Our findings for the first time suggest zebrafish let-7b acts downstream of Hif-1α to assist in hypoxia-mediated cell proliferation and cell cycle regulation at least in part through the downregulation of foxh1. We also identified 4 novel potential HIF-1α-regulated miRNAs in zebrafish.
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Affiliation(s)
- Chun-Xiao Huang
- Key Lab of Freshwater Animal Breeding, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, Wuhan, China
| | - Nan Chen
- Key Lab of Freshwater Animal Breeding, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, Wuhan, China
| | - Xin-Jie Wu
- Key Lab of Freshwater Animal Breeding, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, Wuhan, China
| | - Yan He
- Key Lab of Freshwater Animal Breeding, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, Wuhan, China
| | - Cui-Hong Huang
- Key Lab of Freshwater Animal Breeding, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, Wuhan, China
| | - Hong Liu
- Key Lab of Freshwater Animal Breeding, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, Wuhan, China; Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan, China
| | - Wei-Min Wang
- Key Lab of Freshwater Animal Breeding, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, Wuhan, China
| | - Huan-Ling Wang
- Key Lab of Freshwater Animal Breeding, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, Wuhan, China; Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan, China.
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Zhang W, Chang Q, Xu L, Li G, Yang G, Ding X, Wang X, Cui D, Jiang X. Graphene Oxide-Copper Nanocomposite-Coated Porous CaP Scaffold for Vascularized Bone Regeneration via Activation of Hif-1α. Adv Healthc Mater 2016; 5:1299-309. [PMID: 26945787 DOI: 10.1002/adhm.201500824] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 01/16/2016] [Indexed: 12/20/2022]
Abstract
Graphene has been studied for its in vitro osteoinductive capacity. However, the in vivo bone repair effects of graphene-based scaffolds remain unknown. The aqueous soluble graphene oxide-copper nanocomposites (GO-Cu) are fabricated, which are used to coat porous calcium phosphate (CaP) scaffolds for vascularized bone regeneration. The GO-Cu nanocomposites, containing crystallized CuO/Cu2 O nanoparticles of ≈30 nm diameters, distribute uniformly on the surfaces of the porous scaffolds and maintain a long-term release of Cu ions. In vitro, the GO-Cu coating enhances the adhesion and osteogenic differentiation of rat bone marrow stem cells (BMSCs). It is also found that by activating the Erk1/2 signaling pathway, the GO-Cu nanocomposites upregulate the expression of Hif-1α in BMSCs, resulting in the secretion of VEGF and BMP-2 proteins. When transplanted into rat with critical-sized calvarial defects, the GO-Cu-coated calcium phosphate cement (CPC) scaffolds (CPC/GO-Cu) significantly promote angiogenesis and osteogenesis. Moreover, it is observed via histological sections that the GO-Cu nanocomposites are phagocytosed by multinucleated giant cells. The results suggest that GO-Cu nanocomposite coatings can be utilized as an attractive strategy for vascularized bone regeneration.
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Affiliation(s)
- Wenjie Zhang
- Department of Prosthodontics; Oral Bioengineering and regenerative medicine Lab; Ninth People's Hospital affiliated to Shanghai Jiao; Tong University; School of Medicine; 639 Zhizaoju Road Shanghai 200011 China
| | - Qing Chang
- Clinical Research Center; Shanghai Jiading Central Hospital; 1 Chengbei Road Shanghai 201800 China
| | - Ling Xu
- Department of Prosthodontics; Oral Bioengineering and regenerative medicine Lab; Ninth People's Hospital affiliated to Shanghai Jiao; Tong University; School of Medicine; 639 Zhizaoju Road Shanghai 200011 China
| | - Guanglong Li
- Department of Prosthodontics; Oral Bioengineering and regenerative medicine Lab; Ninth People's Hospital affiliated to Shanghai Jiao; Tong University; School of Medicine; 639 Zhizaoju Road Shanghai 200011 China
| | - Guangzheng Yang
- Department of Prosthodontics; Oral Bioengineering and regenerative medicine Lab; Ninth People's Hospital affiliated to Shanghai Jiao; Tong University; School of Medicine; 639 Zhizaoju Road Shanghai 200011 China
| | - Xun Ding
- Department of Prosthodontics; Oral Bioengineering and regenerative medicine Lab; Ninth People's Hospital affiliated to Shanghai Jiao; Tong University; School of Medicine; 639 Zhizaoju Road Shanghai 200011 China
| | - Xiansong Wang
- Department of Plastic and Reconstructive Surgery; Shanghai Key Laboratory of Tissue Engineering; Shanghai 9th People's Hospital; Shanghai Jiao Tong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 China
| | - Daxiang Cui
- Department of Bio-Nano Science and Engineering; Key Laboratory for Thin Film and Microfabrication of Ministryof Education; Research Institute of Micro/Nano Science and Technology; Shanghai Jiao Tong University; Shanghai 200240 China
| | - Xinquan Jiang
- Department of Prosthodontics; Oral Bioengineering and regenerative medicine Lab; Ninth People's Hospital affiliated to Shanghai Jiao; Tong University; School of Medicine; 639 Zhizaoju Road Shanghai 200011 China
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Lampert FM, Kütscher C, Stark GB, Finkenzeller G. Overexpression of Hif-1α in Mesenchymal Stem Cells Affects Cell-Autonomous Angiogenic and Osteogenic Parameters. J Cell Biochem 2015; 117:760-8. [PMID: 26365321 DOI: 10.1002/jcb.25361] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 09/03/2015] [Indexed: 12/25/2022]
Abstract
Reconstruction of large bone defects still represents a major medical challenge. In recent years tissue engineering has developed techniques based on adult mesenchymal stem cells (MSCs) that could represent an attractive therapeutical option to treat large bone defects in the future. It has been demonstrated in various animal models that ex vivo expanded MSCs are capable of promoting the regeneration of skeletal defects after implantation. However, for the efficient regeneration of bone in tissue engineering applications, a rapid vascularization of implanted grafts is essential to ensure the survival of cells in the early post-implantational phase. A promising strategy to enhance vascularization of MSC-containing implants could consist of overexpression of the angiogenic master transcription factor Hypoxia-inducible factor 1 (Hif-1) in the MSCs in order to induce angiogenesis and support osteogenesis. In the present study, we overexpressed Hif-1α in MSCs by using recombinant adenoviruses and investigated cell-autonomous effects. Overexpression of Hif-1α enhanced proliferation, migration, cell survival and expression of pro-angiogenic genes. Other parameters such as expression of the osteogenic markers BMP-2 and RunX2 were decreased. Hif-1α overexpression had no effect on invasion, senescence and osteogenic differentiation of MSCs. Our experiments revealed multifarious effects of Hif-1α overexpression on cell-autonomous parameters. Therefore, Hif-1α overexpression may represent a therapeutic option to improve cellular functions of MSCs to treat critical sized bone defects.
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Affiliation(s)
- F M Lampert
- Department of Plastic and Hand Surgery, Freiburg University Medical Center, Freiburg, Germany
| | - C Kütscher
- Department of Plastic and Hand Surgery, Freiburg University Medical Center, Freiburg, Germany
| | - G B Stark
- Department of Plastic and Hand Surgery, Freiburg University Medical Center, Freiburg, Germany
| | - G Finkenzeller
- Department of Plastic and Hand Surgery, Freiburg University Medical Center, Freiburg, Germany
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Wang H, Huang C, Chen N, Zhu K, Chen B, Wang W, Wang H. Molecular characterization and mRNA expression of HIF-prolyl hydroxylase-2 (phd2) in hypoxia-sensing pathways from Megalobrama amblycephala. Comp Biochem Physiol B Biochem Mol Biol 2015; 186:28-35. [PMID: 25868626 DOI: 10.1016/j.cbpb.2015.04.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 03/19/2015] [Accepted: 04/01/2015] [Indexed: 12/19/2022]
Abstract
HIF-prolyl-hydroxylase-2 (Phd2), a member of the iron (II) and 2-oxoglutarate-dependent dioxygenase family, is one of the key enzymes in hypoxia-sensing pathways. In this study, the phd2 cDNA sequence (1231bp), including an open reading frame (ORF) and encoding 358 amino acid residues was identified in Megalobrama amblycephala (Wuchang bream). The predicted Phd2 protein contained three conserved domains, MYND type zinc finger domain with critical regulatory activity, Fe(2+)-dependent 2OG-Fe (II) oxygenase superfamily domain with prolyl hydroxylase function, and P4Hc (prolyl 4-hydroxylase alpha subunit homologues) domain for catalyzing proline hydroxylation. The real-time PCR results showed that phd2 mRNA was ubiquitously expressed in all detected tissues with higher levels in the peripheral blood, heart and brain, and all embryogenesis stages, especially in mid-blastula stage. In larvae M. amblycephala, the expression trend of the phd2 and hypoxia-inducible factor 1 alpha (hif-1α) mRNA was opposite during hypoxia with an increase (hypoxia for 4h) and then decrease (hypoxia for 12h) for phd2. Whereas in adult fish, the phd2 mRNA appeared a transient increase under hypoxia for 4h (DO: 3.46±0.59 mg/L), and dramatically reduced with further hypoxia exposure to 12h in the peripheral blood, muscle, head kidney, liver and brain, but showed an opposite expression trend in the heart and gill. The hif-1α expression was contrary with phd2 in the peripheral blood, while it gradually decreased in the heart, but increased in the liver with continuous hypoxia treatment. Additionally, hif-1α also showed lower mRNA levels than phd2 in all detected tissues under normoxia and hypoxia conditions.
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Affiliation(s)
- Huijuan Wang
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, 430070, Wuhan, PR China
| | - Chunxiao Huang
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, 430070, Wuhan, PR China
| | - Nan Chen
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, 430070, Wuhan, PR China
| | - Kecheng Zhu
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, 430070, Wuhan, PR China
| | - Boxiang Chen
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, 430070, Wuhan, PR China; Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, 430070 Wuhan, PR China; Hubei BaiRong Improved Aquatic Seed Co., Ltd, 438800 Huanggang, PR China
| | - Weimin Wang
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, 430070, Wuhan, PR China; Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, 430070 Wuhan, PR China
| | - Huanling Wang
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, College of Fishery, Huazhong Agricultural University, 430070, Wuhan, PR China; Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, 430070 Wuhan, PR China.
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Sui X, Wei H, Wang D. Novel mechanism of cardiac protection by valsartan: synergetic roles of TGF-β1 and HIF-1α in Ang II-mediated fibrosis after myocardial infarction. J Cell Mol Med 2015; 19:1773-82. [PMID: 25823960 PMCID: PMC4549028 DOI: 10.1111/jcmm.12551] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 01/08/2015] [Indexed: 12/19/2022] Open
Abstract
Transforming growth factor (TGF)-β1 is a known factor in angiotensin II (Ang II)-mediated cardiac fibrosis after myocardial infarction (MI). Hypoxia inducible factor-1 (Hif-1α) was recently demonstrated to involve in the tissue fibrosis and influenced by Ang II. However, whether Hif-1α contributed to the Ang II-mediated cardiac fibrosis after MI, and whether interaction or synergetic roles between Hif-1α and TGF-β pathways existed in the process was unclear. In vitro, cardiac cells were incubated under hypoxia or Ang II to mimic ischaemia. In vivo, valsartan was intravenously injected into Sprague-Dawley rats with MI daily for 1 week; saline and hydralazine (another anti-hypertensive agent like valsartan) was used as control. The fibrosis-related proteins were detected by Western blotting. Cardiac structure and function were assessed with multimodality methods. We demonstrated in vitro that hypoxia would induce the up-regulation of Ang II, TGF-β/Smad and Hif-1α, which further induced collagen accumulation. By blocking with valsartan, a blocker of Ang II type I (AT1) receptor, we confirmed that the up-regulation of TGF-β/Smad and Hif-1α was through the Ang II-mediated pathway. By administering TGF-β or dimethyloxalylglycine, we determined that both TGF-β/Smad and Hif-1α contributed to Ang II-mediated collagen accumulation and a synergetic effect between them was observed. Consistent with in vitro results, valsartan significantly attenuated the expression of TGF-β/Smad, Hif-1α and fibrosis-related protein in rats after MI. Heart function, infarcted size, wall thickness as well as myocardial vascularization of ischaemic hearts were also significantly improved by valsartan compared with saline and hydralazine. Our study may provide novel insights into the mechanisms of Ang II-induced cardiac fibrosis as well as into the cardiac protection of valsartan.
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Affiliation(s)
- Xizhong Sui
- Department of Cardiothoracic Surgery, The Civil Aviation General Hospital, Chaoyang District, Beijing, China
| | - Hongchao Wei
- Department of Cardiothoracic Surgery, The Civil Aviation General Hospital, Chaoyang District, Beijing, China
| | - Dacheng Wang
- The Wulanchabu Medical College, Jining, Inner Mongolia, China
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Yang K, Jiang Q, Wang Z, Li M, Zhang Q, Lu W, Wang J. Mutual inhibitory mechanisms between PPARγ and Hif-1α: implication in pulmonary hypertension. ACTA ACUST UNITED AC 2015; 2:e626. [PMID: 27019861 DOI: 10.14800/rci.626] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Transcription factor hypoxia-inducible factor 1α (Hif-1α) is known for its crucial role in promoting the pathogenesis of pulmonary hypertension (PH). Previous studies have indicated the in-depth mechanisms that Hif-1α increases the distal pulmonary arterial (PA) pressure and vascular remodeling by triggering the intracellular calcium homeostasis, especially the store-operated calcium entry (SOCE) process. In our recent research paper published in the Journal of Molecular Medicine, we found that the transcription factor peroxisome proliferator-activated receptor γ (PPARγ) activation could attenuate the PH pathogenesis by suppressing the elevated distal PA pressure and vascular remodeling. Moreover, these effects are likely mediated through the inhibition of SOCE by suppressing Hif-1α. These results provided convincing evidence and novel mechanisms in supporting the protective roles of PPARγ on PH treatment. Then, by using comprehensive loss-of-function and gain-of-function strategies, we further identified the presence of a mutual inhibitory mechanism between PPARγ and Hif-1α. Basically, under chronic hypoxic stress, accumulated Hif-1α leads to abolished expression of PPARγ and progressive imbalance between PPARγ and Hif-1α, which promotes the PH progression; however, targeted PPARγ restoration approach reversely inhibits Hif-1α level and Hif-1α mediated signaling transduction, which subsequently attenuates the elevated pulmonary arterial pressure and vascular remodeling under PH pathogenesis.
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Affiliation(s)
- Kai Yang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China, 510120; Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA, 21224
| | - Qian Jiang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China, 510120; Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA, 21224
| | - Ziyi Wang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China, 510120
| | - Meichan Li
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China, 510120
| | - Qian Zhang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China, 510120
| | - Wenju Lu
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China, 510120
| | - Jian Wang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China, 510120; Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA, 21224
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Abstract
γ-Secretase is a four subunit, 19-pass transmembrane enzyme that cleaves amyloid precursor protein (APP), catalyzing the formation of amyloid beta (Aβ) peptides that form amyloid plaques, which contribute to Alzheimer’s disease (AD) pathogenesis. γ-Secretase also cleaves Notch, among many other type I transmembrane substrates. Despite its seemingly promiscuous enzymatic capacity, γ-secretase activity is tightly regulated. This regulation is a function of many cellular entities, including but not limited to the essential γ-secretase subunits, nonessential (modulatory) subunits, and γ-secretase substrates. Regulation is also accomplished by an array of cellular events, such as presenilin (active subunit of γ-secretase) endoproteolysis and hypoxia. In this review we discuss how γ-secretase is regulated with the hope that an advanced understanding of these mechanisms will aid in the development of effective therapeutics for γ-secretase-associated diseases like AD and Notch-addicted cancer.
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Affiliation(s)
- Natalya Gertsik
- Molecular Pharmacology and Chemistry Program, Memorial Sloan-Kettering Cancer Center New York, NY, USA ; Biochemistry and Molecular Biology Program, Weill Graduate School of Medical Sciences of Cornell University New York, NY, USA
| | - Danica Chiu
- Molecular Pharmacology and Chemistry Program, Memorial Sloan-Kettering Cancer Center New York, NY, USA ; Program of Pharmacology, Weill Graduate School of Medical Sciences of Cornell University New York, NY, USA
| | - Yue-Ming Li
- Molecular Pharmacology and Chemistry Program, Memorial Sloan-Kettering Cancer Center New York, NY, USA ; Program of Pharmacology, Weill Graduate School of Medical Sciences of Cornell University New York, NY, USA
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Deng J, Huang Q, Wang Y, Shen P, Guan F, Li J, Huang H, Shi C. Hypoxia-inducible factor-1alpha regulates autophagy to activate hepatic stellate cells. Biochem Biophys Res Commun 2014; 454:328-34. [PMID: 25450397 DOI: 10.1016/j.bbrc.2014.10.076] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 10/15/2014] [Indexed: 02/07/2023]
Abstract
The role of autophagy in Hif-1α modulated activation of hepatic stellate cells was illustrated in current work. Autophagy markers were determined in livers of Schistosoma japonicum infected mice and hypoxia or LPS treated human hepatic stellate cell, LX-2 cells. The action of Hif-1 to autophagy was defined as increase of autophagy markers was significantly suppressed in Hif-1α siRNA transfected cells upon hypoxia or LPS stimulation. The function of autophagy in activation of LX-2 cells was assessed as increase of activation markers was blocked using autophagy inhibitors under hypoxia and LPS stimulation. Conclusively, Hif-1α regulates activation of hepatic stellate cell by modulating autophagy.
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Affiliation(s)
- Jing Deng
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Qin Huang
- Department of Medical Rehabilitation, Union Hospital, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Yueqin Wang
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Pei Shen
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Fei Guan
- Department of Parasitology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Jianrong Li
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Hanju Huang
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Chunwei Shi
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China.
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Hu YY, Fu LA, Li SZ, Chen Y, Li JC, Han J, Liang L, Li L, Ji CC, Zheng MH, Han H. Hif-1α and Hif-2α differentially regulate Notch signaling through competitive interaction with the intracellular domain of Notch receptors in glioma stem cells. Cancer Lett 2014; 349:67-76. [PMID: 24705306 DOI: 10.1016/j.canlet.2014.03.035] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Revised: 03/26/2014] [Accepted: 03/28/2014] [Indexed: 01/16/2023]
Abstract
Hypoxia contributes to GSC expansion principally through Hif-1α and Hif-2α, but how these two factors work together has not been completely understood. We show that hypoxia promoted proliferation, self-renewal and inhibited the conversion of GSCs into INP-like cells through activating Notch signaling. Further data suggested that Hif-2α interacted with NICD and repressed the activity of Notch signaling, in contrast to the role of Hif-1α in Notch signaling. Together, our findings suggest that Hif-1α and Hif-2α competitively bind to NICD and dynamically regulate the activation of Notch signaling in GSCs likely depending on different oxygen tensions, providing improved therapeutic opportunities for malignant gliomas.
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Affiliation(s)
- Yi-Yang Hu
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China
| | - Luo-An Fu
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China
| | - San-Zhong Li
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China; Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China
| | - Yan Chen
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China
| | - Jun-Chang Li
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China
| | - Jun Han
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China
| | - Liang Liang
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China
| | - Liang Li
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China; Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China
| | - Chen-Chen Ji
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China; Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China
| | - Min-Hua Zheng
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China.
| | - Hua Han
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Chang-Le Xi Street #17, Xi'an 710032, China.
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Abstract
Inflammatory immune cells, when activated, display much the same metabolic profile as a glycolytic tumor cell. This involves a shift in metabolism away from oxidative phosphorylation towards aerobic glycolysis, a phenomenon known as the Warburg effect. The result of this change in macrophages is to rapidly provide ATP and metabolic intermediates for the biosynthesis of immune and inflammatory proteins. In addition, a rise in certain tricarboxylic acid cycle intermediates occurs notably in citrate for lipid biosynthesis, and succinate, which activates the transcription factor Hypoxia-inducible factor. In this review we take a look at the emerging evidence for a role for the Warburg effect in the immune and inflammatory responses. The reprogramming of metabolic pathways in macrophages, dendritic cells, and T cells could have relevance in the pathogenesis of inflammatory and metabolic diseases and might provide novel therapeutic strategies.
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