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Amin N, Abbasi IN, Wu F, Shi Z, Sundus J, Badry A, Yuan X, Zhao BX, Pan J, Mi XD, Luo Y, Geng Y, Fang M. The Janus face of HIF-1α in ischemic stroke and the possible associated pathways. Neurochem Int 2024; 177:105747. [PMID: 38657682 DOI: 10.1016/j.neuint.2024.105747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 03/01/2024] [Accepted: 04/19/2024] [Indexed: 04/26/2024]
Abstract
Stroke is the most devastating disease, causing paralysis and eventually death. Many clinical and experimental trials have been done in search of a new safe and efficient medicine; nevertheless, scientists have yet to discover successful remedies that are also free of adverse effects. This is owing to the variability in intensity, localization, medication routes, and each patient's immune system reaction. HIF-1α represents the modern tool employed to treat stroke diseases due to its functions: downstream genes such as glucose metabolism, angiogenesis, erythropoiesis, and cell survival. Its role can be achieved via two downstream EPO and VEGF strongly related to apoptosis and antioxidant processes. Recently, scientists paid more attention to drugs dealing with the HIF-1 pathway. This review focuses on medicines used for ischemia treatment and their potential HIF-1α pathways. Furthermore, we discussed the interaction between HIF-1α and other biological pathways such as oxidative stress; however, a spotlight has been focused on certain potential signalling contributed to the HIF-1α pathway. HIF-1α is an essential regulator of oxygen balance within cells which affects and controls the expression of thousands of genes related to sustaining homeostasis as oxygen levels fluctuate. HIF-1α's role in ischemic stroke strongly depends on the duration and severity of brain damage after onset. HIF-1α remains difficult to investigate, particularly in ischemic stroke, due to alterations in the acute and chronic phases of the disease, as well as discrepancies between the penumbra and ischemic core. This review emphasizes these contrasts and analyzes the future of this intriguing and demanding field.
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Affiliation(s)
- Nashwa Amin
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China; Department of Zoology, Faculty of Science, Aswan University, Egypt; Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Irum Naz Abbasi
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Fei Wu
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Zongjie Shi
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Javaria Sundus
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Azhar Badry
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Xia Yuan
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Bing-Xin Zhao
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Jie Pan
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Xiao-Dan Mi
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Yuhuan Luo
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yu Geng
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Marong Fang
- Institute of Systemic Medicine, Zhejiang University School of Medicine, Hangzhou, China; Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China.
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Li W, Xu L, Wang Y, Li W, Maimaiti M, Kou B, Liu C, Zhang M, Xia H, Yuan F. Protective effect of intermittent hypobaric hypoxia against radiation-induced liver damage in Sprague-Dawley rats. Technol Health Care 2024; 32:595-604. [PMID: 37483028 DOI: 10.3233/thc-220718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
BACKGROUND Without timely and effective interventions or treatments, radiation-induced liver damage (RILD) can lead to serious consequences for the patients and their families. OBJECTIVE To investigate the protective effect of intermittent hypobaric hypoxia preconditioning (IHHP) in RILD. METHODS Male adult SD rats were randomly divided into 8 groups including one control group, one only irradiation group and other experimental groups. Blood routine tests and liver function tests were all assessed with abdominal venous blood. Moreover, hematoxylin eosin (HE) staining and immunohistochemistry assay were used to detect the histopathological changes and expressions of transforming growth factor-β1 (TGF-β1), tumor necrosis factor α (TNF-α) and hypoxia-inducible factor 1α (HIF-1α) in radiated liver sections. RESULTS Blood routing tests showed that RBC, WBC and Hb were all significantly increased while the differences of these results between different groups with same simulated altitude were approximate. However, liver function in the IHHP plus irradiation at 4000 m group was significantly decreased (P< 0.05) compared to only irradiation groups, and the manifestation of HE and lower positive expression of TNF-α showed improved histopathological changes in the liver section. Furthermore, no significant difference of HIF-1α expression between any two groups treated with IHHP was observed. CONCLUSION IHHP at the altitude of 4000 m group could alleviate the radioactive liver damage by downregulating TNF-α and less strong positive expression of TGF-β1. Furthermore, patients exposed to radiation might benefit from this treatment to prevent or reduce the RILD.
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Affiliation(s)
- Wenzhe Li
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
| | - Li Xu
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
| | - Yajing Wang
- Department of Chemistry, Wulumuqi, Xinjiang, China
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
| | - Wenjun Li
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
| | - Meiligu Maimaiti
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
| | - Bin Kou
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
| | - Chenchen Liu
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
| | - Meng Zhang
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
| | - Hongjuan Xia
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
| | - Fang Yuan
- Department of Radiotherapy, General Hospital of Xinjiang Military Command, Wulumuqi, Xinjiang, China
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Taş D, Kurgan Ş, Güney Z, Serdar MA, Tatakis DN. The effect of smoking on clinical and biochemical early healing outcomes of coronally advanced flap with connective tissue graft: Prospective cohort study. J Periodontol 2024; 95:17-28. [PMID: 37436705 DOI: 10.1002/jper.23-0214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/09/2023] [Accepted: 06/10/2023] [Indexed: 07/13/2023]
Abstract
BACKGROUND This study aimed to determine the effects of smoking on early (≤3 months) clinical outcomes and relevant molecular biomarkers following root coverage surgery. METHODS Eighteen smokers and 18 nonsmokers, status biochemically verified, with RT1 gingival recession defects were recruited and completed study procedures. All patients received coronally advanced flap plus connective tissue graft. Baseline and 3 month recession depth (RD), recession width (RW), keratinized tissue width (KTW), clinical attachment level (CAL), and gingival phenotype (GP) were recorded. Root coverage (RC) percentage and complete root coverage (CRC) were calculated. Recipient (gingival crevicular fluid) and donor (wound fluid) site VEGF-A, HIF-1α, 8-OHdG, and ANG levels were determined. RESULTS There were no significant intergroup differences for any baseline or postoperative clinical parameters (P > 0.05), except for whole mouth gingival index (increased in nonsmokers at 3 months; P < 0.05). Compared to baseline, RD, RW, CAL, KTW, and GP significantly improved postoperatively, without significant intergroup differences. There were no significant intergroup differences for RC (smokers = 83%, nonsmokers = 91%, P = 0.069), CRC (smokers = 50%, nonsmokers = 72%, P = 0.177), and CAL gain (P = 0.193). The four biomarker levels significantly increased postoperatively (day 7; P ≤ 0.042) in both groups and returned to baseline (day 28) without significant intergroup differences (P > 0.05). Similarly, donor site parameters were not different between groups. Strong correlations, consistent over time, were found between biomarkers implicated in angiogenesis (VEGF-A, HIF-1α, and ANG). CONCLUSIONS The early (3 month) clinical and molecular changes after root coverage surgery utilizing a coronally advanced flap plus connective tissue graft are similar between smokers and nonsmokers.
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Affiliation(s)
- Duygu Taş
- Department of Periodontology, Faculty of Dentistry, Ankara University, Ankara, Turkey
- Graduate School of Health Sciences, Ankara University, Ankara, Turkey
| | - Şivge Kurgan
- Department of Periodontology, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Zeliha Güney
- Department of Periodontology, Faculty of Dentistry, Ankara Medipol University, Ankara, Turkey
| | - Muhittin A Serdar
- Department of Medical Biochemistry, School of Medicine, Acıbadem University, Ankara, Turkey
| | - Dimitris N Tatakis
- Division of Periodontology, College of Dentistry, The Ohio State University, Columbus, Ohio, USA
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DeMichele E, Sosnowski O, Buret AG, Allain T. Regulatory Functions of Hypoxia in Host-Parasite Interactions: A Focus on Enteric, Tissue, and Blood Protozoa. Microorganisms 2023; 11:1598. [PMID: 37375100 PMCID: PMC10303274 DOI: 10.3390/microorganisms11061598] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Body tissues are subjected to various oxygenic gradients and fluctuations and hence can become transiently hypoxic. Hypoxia-inducible factor (HIF) is the master transcriptional regulator of the cellular hypoxic response and is capable of modulating cellular metabolism, immune responses, epithelial barrier integrity, and local microbiota. Recent reports have characterized the hypoxic response to various infections. However, little is known about the role of HIF activation in the context of protozoan parasitic infections. Growing evidence suggests that tissue and blood protozoa can activate HIF and subsequent HIF target genes in the host, helping or hindering their pathogenicity. In the gut, enteric protozoa are adapted to steep longitudinal and radial oxygen gradients to complete their life cycle, yet the role of HIF during these protozoan infections remains unclear. This review focuses on the hypoxic response to protozoa and its role in the pathophysiology of parasitic infections. We also discuss how hypoxia modulates host immune responses in the context of protozoan infections.
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Affiliation(s)
- Emily DeMichele
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Olivia Sosnowski
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Andre G. Buret
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Thibault Allain
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
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Tam FF, Ning KL, Lee M, Dumlao JM, Choy JC. Cytokine induction of HIF-1α during normoxia in A549 human lung carcinoma cells is regulated by STAT1 and JNK signalling pathways. Mol Immunol 2023; 160:12-19. [PMID: 37295053 DOI: 10.1016/j.molimm.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/30/2023] [Accepted: 06/02/2023] [Indexed: 06/12/2023]
Abstract
Hypoxia inducible factor-1ɑ (HIF-1ɑ) is the regulatory subunit of the HIF-1 transcription factor that is a regulator of cell physiological responses to hypoxia. However, the biological function and regulatory mechanisms controlling HIF-1α in normoxia are poorly understood. Here, we first examined the role of HIF-1α in the inflammatory activation of A549 human lung carcinoma cells in normoxia. Inactivation of the HIF-1α gene by CRISPR/Cas9 reduced the secretion of CXCL8 induced by stimulation with a cytokine mixture (CM) consisting of IL-1, TNFα and IFNγ. We next determined that cytokines act co-operatively to induce expression and nuclear accumulation of HIF-1α. To investigate the signalling mechanisms by which cytokines induce HIF-1α in normoxia, pharmacological inhibitors against the Jak/STAT, PI3K, NFκB, MEK/ERK, and JNK pathways were used. Inhibition of the Jak/STAT and JNK pathways inhibited the induction and nuclear accumulation of HIF-1ɑ by cytokines. Furthermore, siRNA knockdown of STAT1 and JNK also reduced the induction of HIF-1α by cytokines. Finally, pharmacological inhibition of these two pathways also blocked the trans-activation of HIF-1. These findings have implications for understanding the role and regulatory mechanisms of HIF-1ɑ in inflammation and cell biology.
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Affiliation(s)
- Franklin F Tam
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Kevin Luong Ning
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Martin Lee
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Jenice M Dumlao
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Jonathan C Choy
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, Canada.
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Mao C, Liu X, Guo SW. Decreased Glycolysis at Menstruation is Associated with Increased Menstrual Blood Loss. Reprod Sci 2023; 30:928-951. [PMID: 36042151 DOI: 10.1007/s43032-022-01066-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 08/11/2022] [Indexed: 12/01/2022]
Abstract
Heavy menstrual bleeding (HMB) is common and severely affects the quality of life of the afflicted women. While HMB is known to be caused by impaired endometrial repair after menstruation, its more proximate cause remains unknown. To investigate whether glycolysis plays any role in endometrial repair and thus HMB, we conducted two mouse experiments using a mouse model of simulated menstruation. We performed immunohistochemistry analyses of proteins involved in glycolysis as well as pro- and anti-inflammatory cytokines in endometrium from decidualized and non-decidualized uterine horns. We also assessed the extent of endometrial repair by staging endometrial morphology from decidualization to full repair using histological scoring of uterine sections and quantitated the amount of menstrual blood loss (MBL). In addition, we employed the scratch assay and the CCK-8 assay to evaluate the effect of glycolysis suppression on cellular migration and proliferation, respectively. Finally, we performed an immunohistochemistry analysis of HK2 in endometrium from women with adenomyosis who experienced either moderate/heavy or excessive MBL. We found that endometrial repair coincided with increased glycolysis in endometrium and glycolysis suppression delayed endometrial repair, resulting in increased MBL. Additionally, glycolysis suppression significantly inhibited the proliferative and migratory capability of endometrial cells, and disrupted normal endometrial repair even when hypoxia was maintained. Women with adenomyosis who experienced excessive MBL had significantly lower HK2 staining than those who experienced moderate/heavy MBL. Thus, our study highlights the importance of glycolysis as well as inflammation in optimal endometrial repair, and provides clues for the cause of HMB in women with adenomyosis.
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Affiliation(s)
- Chenyu Mao
- Department of Gynecology, Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China
| | - Xishi Liu
- Department of Gynecology, Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China.,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China
| | - Sun-Wei Guo
- Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China. .,Research Institute, Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China.
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Hypoxia-inducible factor signaling in vascular calcification in chronic kidney disease patients. J Nephrol 2022; 35:2205-2213. [PMID: 36208406 DOI: 10.1007/s40620-022-01432-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 08/02/2022] [Indexed: 10/10/2022]
Abstract
Chronic kidney disease (CKD) affects approximately 15% of the adult population in high-income countries and is associated with significant comorbidities, including increased vascular calcifications which is associated with a higher risk for cardiovascular events. Even though the underlying pathophysiology is unclear, hypoxia-inducible factor (HIF) signaling appears to play a central role in inflammation, angiogenesis, fibrosis, cellular proliferation, apoptosis and vascular calcifications which is influenced by multiple variables such as iron deficiency anemia, serum phosphorus and calcium levels, fibroblast growth factor-23 (FGF-23) and Klotho. Along with the growing understanding of the pathology, potential therapeutic alternatives have emerged including HIF stabilizers and SGLT-2 inhibitors. The aim of this review is to discuss the role of HIF signaling in the pathophysiology of vascular calcification in CKD patients and to identify potential therapeutic approaches.
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Flores K, Siques P, Brito J, Arribas SM. AMPK and the Challenge of Treating Hypoxic Pulmonary Hypertension. Int J Mol Sci 2022; 23:ijms23116205. [PMID: 35682884 PMCID: PMC9181235 DOI: 10.3390/ijms23116205] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/29/2022] [Accepted: 04/30/2022] [Indexed: 02/01/2023] Open
Abstract
Hypoxic pulmonary hypertension (HPH) is characterized by sustained elevation of pulmonary artery pressure produced by vasoconstriction and hyperproliferative remodeling of the pulmonary artery and subsequent right ventricular hypertrophy (RVH). The search for therapeutic targets for cardiovascular pathophysiology has extended in many directions. However, studies focused on mitigating high-altitude pulmonary hypertension (HAPH) have been rare. Because AMP-activated protein kinase (AMPK) is involved in cardiovascular and metabolic pathology, AMPK is often studied as a potential therapeutic target. AMPK is best characterized as a sensor of cellular energy that can also restore cellular metabolic homeostasis. However, AMPK has been implicated in other pathways with vasculoprotective effects. Notably, cellular metabolic stress increases the intracellular ADP/ATP or AMP/ATP ratio, and AMPK activation restores ATP levels by activating energy-producing catabolic pathways and inhibiting energy-consuming anabolic pathways, such as cell growth and proliferation pathways, promoting cardiovascular protection. Thus, AMPK activation plays an important role in antiproliferative, antihypertrophic and antioxidant pathways in the pulmonary artery in HPH. However, AMPK plays contradictory roles in promoting HPH development. This review describes the main findings related to AMPK participation in HPH and its potential as a therapeutic target. It also extrapolates known AMPK functions to discuss the less-studied HAPH context.
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Affiliation(s)
- Karen Flores
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile; (P.S.); (J.B.)
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, 20251 Hamburg, Germany and Iquique 1100000, Chile
- Correspondence: ; Tel.: +56-572526392
| | - Patricia Siques
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile; (P.S.); (J.B.)
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, 20251 Hamburg, Germany and Iquique 1100000, Chile
| | - Julio Brito
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile; (P.S.); (J.B.)
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, 20251 Hamburg, Germany and Iquique 1100000, Chile
| | - Silvia M. Arribas
- Department of Physiology, University Autonoma of Madrid, 28049 Madrid, Spain;
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Targeting HIF-1α Function in Cancer through the Chaperone Action of NQO1: Implications of Genetic Diversity of NQO1. J Pers Med 2022; 12:jpm12050747. [PMID: 35629169 PMCID: PMC9146583 DOI: 10.3390/jpm12050747] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 04/25/2022] [Indexed: 02/04/2023] Open
Abstract
HIF-1α is a master regulator of oxygen homeostasis involved in different stages of cancer development. Thus, HIF-1α inhibition represents an interesting target for anti-cancer therapy. It was recently shown that the HIF-1α interaction with NQO1 inhibits proteasomal degradation of the former, thus suggesting that targeting the stability and/or function of NQO1 could lead to the destabilization of HIF-1α as a therapeutic approach. Since the molecular interactions of NQO1 with HIF-1α are beginning to be unraveled, in this review we discuss: (1) Structure–function relationships of HIF-1α; (2) our current knowledge on the intracellular functions and stability of NQO1; (3) the pharmacological modulation of NQO1 by small ligands regarding function and stability; (4) the potential effects of genetic variability of NQO1 in HIF-1α levels and function; (5) the molecular determinants of NQO1 as a chaperone of many different proteins including cancer-associated factors such as HIF-1α, p53 and p73α. This knowledge is then further discussed in the context of potentially targeting the intracellular stability of HIF-1α by acting on its chaperone, NQO1. This could result in novel anti-cancer therapies, always considering that the substantial genetic variability in NQO1 would likely result in different phenotypic responses among individuals.
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Wrobeln A, Leu T, Jablonska J, Geisthoff U, Lang S, Fandrey J, Droege F. Altered hypoxia inducible factor regulation in hereditary haemorrhagic telangiectasia. Sci Rep 2022; 12:5877. [PMID: 35393474 PMCID: PMC8988913 DOI: 10.1038/s41598-022-09759-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/29/2022] [Indexed: 11/09/2022] Open
Abstract
Patients with hereditary haemorrhagic telangiectasia (HHT), also known as Rendu–Osler–Weber syndrome, suffer from the consequences of abnormal vessel structures. These structures can lead to haemorrhages or shunt effects in liver, lungs and brain. This inherited and rare disease is characterized by mutations affecting the transforming growth factor-β (TGF-β)/Bone Morphogenetic Protein (BMP) pathway that results in arteriovenous malformations and studies indicate an impaired immune response. The mechanism underlying this altered immune response in HHT patients is still unknown. TGF-β interacts with hypoxia inducible factors (HIF), which both orchestrate inflammatory and angiogenic processes. Therefore, we analysed the expression of HIF and related genes in whole blood samples from HHT patients. We could show significantly decreased expression of HIF-1α on the mRNA and protein level. However, commonly known upstream regulators of HIF-1α in inflammatory responses were not affected, whereas HIF-1α target genes were significantly downregulated. There was no correlation between HIF1A or HIF2A gene expression and the severity of HHT detected. Our results represent a rare case of HIF-1α downregulation in a human disease, which underlines the relevance of HIFs in HHT. The study indicates an interaction of the known mutation in HHT and the dysregulation of HIF-1α in HHT patients, which might contribute to the clinical phenotype.
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Affiliation(s)
- Anna Wrobeln
- Institute of Physiology, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45122, Essen, Germany.
| | - Tristan Leu
- Institute of Physiology, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45122, Essen, Germany
| | - Jadwiga Jablonska
- Translational Oncology, Department of Otorhinolaryngology, University Hospital Essen, University Duisburg-Essen, Hufelandstaße 55, 45147, Essen, Germany
| | - Urban Geisthoff
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Marburg, Philipps-Universität Marburg, Baldingerstrasse, 35043, Marburg, Germany
| | - Stephan Lang
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45122, Essen, Germany
| | - Joachim Fandrey
- Institute of Physiology, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45122, Essen, Germany
| | - Freya Droege
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45122, Essen, Germany
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Arora S, Khan S, Zaki A, Tabassum G, Mohsin M, Bhutto HN, Ahmad T, Fatma T, Syed MA. Integration of chemokine signaling with non-coding RNAs in tumor microenvironment and heterogeneity in different cancers. Semin Cancer Biol 2022; 86:720-736. [DOI: 10.1016/j.semcancer.2022.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/15/2022] [Accepted: 03/02/2022] [Indexed: 02/07/2023]
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12
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Zhu S, Shan H, Li J, Pan L, Wang S, Zhu J, Guo H, Mi F, Wu X, Yin J, Pang K. Therapeutic potential of topical administration of acriflavine against hypoxia-inducible factors for corneal fibrosis. Front Pharmacol 2022; 13:996635. [PMID: 36339559 PMCID: PMC9634531 DOI: 10.3389/fphar.2022.996635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 10/12/2022] [Indexed: 11/29/2022] Open
Abstract
Transdifferentiation of keratocytes into fibroblasts or further into myofibroblasts, which produced denser and more disorganized extracellular matrix, is the major cause of corneal fibrosis and scarring, leading to corneal blindness. TGF-β1 is the critical cytokine for the myofibroblast's transdifferentiation and survival. Hypoxia Inducible Factor (HIF) was found to play an important role in promoting fibrosis in lung, kidney, and dermal tissues recently. Our preliminary study demonstrated that topical administration of the acriflavine (ACF), a drug inhibiting HIF dimerization, delayed corneal opacity and neovascularization after the alkali burn. To know whether ACF could prevent corneal fibrosis and improve corneal transparency, we created a mouse mechanical corneal injury model and found that topical administration of ACF significantly inhibited corneal fibrosis at day 14 post-injury. The reduction of myofibroblast marker α-SMA, and fibronectin, one of the disorganized extracellular matrix molecules, in the corneal stroma were confirmed by the examination of immunohistochemistry and real-time PCR. Furthermore, the ACF inhibited the expression of α-SMA and fibronectin in both TGF-β1 stimulated or unstimulated fibroblasts in vitro. This effect was based on the inhibition of HIF signal pathways since the levels of the HIF-1α downstream genes including Slc2a1, Bnip3 and VEGFA were downregulated. To our knowledge, this is the first time to implicate that HIFs might be a new treatment target for controlling corneal fibrosis in mechanical corneal injuries.
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Affiliation(s)
- Shuyan Zhu
- Xi'an People's Hospital (Xi'an Fourth Hospital), Shanxi Eye Hospital, Xi'an, Shanxi, China
| | - Huimin Shan
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Jianqiao Li
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Lijie Pan
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Shudan Wang
- Department of Ophthalmology, Harvard Medical School, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, United States
| | - Jing Zhu
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Hui Guo
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Fenghua Mi
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xinyi Wu
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Jia Yin
- Department of Ophthalmology, Harvard Medical School, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, United States
| | - Kunpeng Pang
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, Shandong, China
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13
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Restraint of Fumarate Accrual by HIF-1α Preserves miR-27a-Mediated Limitation of Interleukin 10 during Infection of Macrophages by Histoplasma capsulatum. mBio 2021; 12:e0271021. [PMID: 34749531 PMCID: PMC8576535 DOI: 10.1128/mbio.02710-21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Hypoxia-inducible factor 1α (HIF-1α) regulates the immunometabolic phenotype of macrophages, including the orchestration of inflammatory and antimicrobial processes. Macrophages deficient in HIF-1α produce excessive quantities of the anti-inflammatory cytokine interleukin 10 (IL-10) during infection with the intracellular fungal pathogen Histoplasma capsulatum (R. A. Fecher, M. C. Horwath, D. Friedrich, J. Rupp, G. S. Deepe, J Immunol 197:565–579, 2016, https://doi.org/10.4049/jimmunol.1600342). Thus, the macrophage fails to become activated in response to proinflammatory cytokines and remains the intracellular niche of the pathogen. Here, we identify the tricarboxylic acid (TCA) cycle metabolite fumarate as the driver of IL-10 during macrophage infection with H. capsulatum in the absence of HIF-1α. Accumulation of fumarate reduced expression of a HIF-1α-dependent microRNA (miRNA), miR-27a, known to mediate decay of Il10 mRNA. Inhibition of fumarate accrual in vivo limited IL-10 and fungal growth. Our data demonstrate the critical role of HIF-1α in shaping appropriate TCA cycle activity in response to infection and highlight the consequences of a dysregulated immunometabolic response.
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14
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Malkov MI, Lee CT, Taylor CT. Regulation of the Hypoxia-Inducible Factor (HIF) by Pro-Inflammatory Cytokines. Cells 2021; 10:cells10092340. [PMID: 34571989 PMCID: PMC8466990 DOI: 10.3390/cells10092340] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/27/2021] [Accepted: 09/02/2021] [Indexed: 12/28/2022] Open
Abstract
Hypoxia and inflammation are frequently co-incidental features of the tissue microenvironment in a wide range of inflammatory diseases. While the impact of hypoxia on inflammatory pathways in immune cells has been well characterized, less is known about how inflammatory stimuli such as cytokines impact upon the canonical hypoxia-inducible factor (HIF) pathway, the master regulator of the cellular response to hypoxia. In this review, we discuss what is known about the impact of two major pro-inflammatory cytokines, tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β), on the regulation of HIF-dependent signaling at sites of inflammation. We report extensive evidence for these cytokines directly impacting upon HIF signaling through the regulation of HIF at transcriptional and post-translational levels. We conclude that multi-level crosstalk between inflammatory and hypoxic signaling pathways plays an important role in shaping the nature and degree of inflammation occurring at hypoxic sites.
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Affiliation(s)
- Mykyta I. Malkov
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland; (M.I.M.); (C.T.L.)
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - Chee Teik Lee
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland; (M.I.M.); (C.T.L.)
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - Cormac T. Taylor
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland; (M.I.M.); (C.T.L.)
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
- Correspondence:
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15
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Lopez-Pascual A, Trayhurn P, Martínez JA, González-Muniesa P. Oxygen in Metabolic Dysfunction and Its Therapeutic Relevance. Antioxid Redox Signal 2021; 35:642-687. [PMID: 34036800 DOI: 10.1089/ars.2019.7901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Significance: In recent years, a number of studies have shown altered oxygen partial pressure at a tissue level in metabolic disorders, and some researchers have considered oxygen to be a (macro) nutrient. Oxygen availability may be compromised in obesity and several other metabolism-related pathological conditions, including sleep apnea-hypopnea syndrome, the metabolic syndrome (which is a set of conditions), type 2 diabetes, cardiovascular disease, and cancer. Recent Advances: Strategies designed to reduce adiposity and its accompanying disorders have been mainly centered on nutritional interventions and physical activity programs. However, novel therapies are needed since these approaches have not been sufficient to counteract the worldwide increasing rates of metabolic disorders. In this regard, intermittent hypoxia training and hyperoxia could be potential treatments through oxygen-related adaptations. Moreover, living at a high altitude may have a protective effect against the development of abnormal metabolic conditions. In addition, oxygen delivery systems may be of therapeutic value for supplying the tissue-specific oxygen requirements. Critical Issues: Precise in vivo methods to measure oxygenation are vital to disentangle some of the controversies related to this research area. Further, it is evident that there is a growing need for novel in vitro models to study the potential pathways involved in metabolic dysfunction to find appropriate therapeutic targets. Future Directions: Based on the existing evidence, it is suggested that oxygen availability has a key role in obesity and its related comorbidities. Oxygen should be considered in relation to potential therapeutic strategies in the treatment and prevention of metabolic disorders. Antioxid. Redox Signal. 35, 642-687.
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Affiliation(s)
- Amaya Lopez-Pascual
- Department of Nutrition, Food Science and Physiology, School of Pharmacy and Nutrition, Centre for Nutrition Research, University of Navarra, Pamplona, Spain.,Neuroendocrine Cell Biology, Lund University Diabetes Centre, Lund University, Malmö, Sweden
| | - Paul Trayhurn
- Obesity Biology Unit, University of Liverpool, Liverpool, United Kingdom.,Clore Laboratory, The University of Buckingham, Buckingham, United Kingdom
| | - J Alfredo Martínez
- Department of Nutrition, Food Science and Physiology, School of Pharmacy and Nutrition, Centre for Nutrition Research, University of Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain.,CIBERobn Physiopathology of Obesity and Nutrition, Centre of Biomedical Research Network, ISCIII, Madrid, Spain.,Precision Nutrition and Cardiometabolic Health, IMDEA Food, Madrid Institute for Advanced Studies, Madrid, Spain
| | - Pedro González-Muniesa
- Department of Nutrition, Food Science and Physiology, School of Pharmacy and Nutrition, Centre for Nutrition Research, University of Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain.,CIBERobn Physiopathology of Obesity and Nutrition, Centre of Biomedical Research Network, ISCIII, Madrid, Spain
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16
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Okan A, Doğanyiğit Z, Eroğlu E, Akyüz E, Demir N. Immunoreactive definition of TNF- α, HIF-1 α, Kir6.2, Kir3.1 and M2 muscarinic receptor for cardiac and pancreatic tissues in a mouse model for type 1 diabetes. Life Sci 2021; 284:119886. [PMID: 34389402 DOI: 10.1016/j.lfs.2021.119886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 08/02/2021] [Accepted: 08/03/2021] [Indexed: 11/25/2022]
Affiliation(s)
- Aslı Okan
- Department of Histology and Embryology, School of Medicine, Yozgat Bozok University, Yozgat 66100, Turkey
| | - Züleyha Doğanyiğit
- Department of Histology and Embryology, School of Medicine, Yozgat Bozok University, Yozgat 66100, Turkey
| | - Ece Eroğlu
- School of Medicine, Yozgat Bozok University, Yozgat 66100, Turkey
| | - Enes Akyüz
- Department of Biophysics, School of International Medicine, University of Health Sciences, Istanbul 34668, Turkey
| | - Necdet Demir
- Department of Histology and Embryology, School of Medicine, Akdeniz University, Antalya 07070, Turkey.
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17
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Jayaram A, Deer E, Amaral LM, Campbell N, Vaka VR, Cunningham M, Ibrahim T, Cornelius DC, LaMarca BB. The role of tumor necrosis factor in triggering activation of natural killer cell, multi-organ mitochondrial dysfunction and hypertension during pregnancy. Pregnancy Hypertens 2021; 24:65-72. [PMID: 33677421 PMCID: PMC8681863 DOI: 10.1016/j.preghy.2021.02.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 12/13/2020] [Accepted: 02/04/2021] [Indexed: 11/24/2022]
Abstract
Pre-eclampsia (PE) is a hypertensive disorder of pregnancy associated with chronic inflammation, mitochondrial (mt) dysfunction and fetal demise. Natural Killer cells (NK cells) are critical for the innate immune response against tumors or infection by disrupting cellular mt function and causing cell death. Although NK cells can be stimulated by Tumor necrosis factor alpha (TNF-α), we don't know the role of TNF-α on NK cell mediated mt dysfunction during PE. Our objective was to determine if mechanisms of TNF-α induced hypertension included activation of NK cells and multi-organ mt dysfunction during pregnancy. Pregnant rats were divided into 2 groups: normal pregnant (NP) (n = 18) and NP + TNF-α (n = 18). On gestational day 14, TNF-α (50 ng/ml) was infused via mini-osmotic pump and on day 18, carotid artery catheters were inserted. Blood pressure (MAP) and samples were collected on day 19. TNF-α increased MAP (109 ± 2 vs 100 ± 2, p < 0.05), circulating cytolytic NK cells (0.771 ± 0.328 vs.0.008 ± 0.003% gated, <0.05) and fetal reabsorptions compared to NP rats. Moreover, TNF-α caused mtROS in the placenta (12976 ± 7038 vs 176.9 ± 68.04% fold, p < 0.05) and in the kidney (2191 ± 1027 vs 816 ± 454.7% fold, p < 0.05) compared to NP rats. TNF-α induced hypertension is associated fetal demise, activation of NK cells and multi-organ mt dysfunction which could be mechanisms for fetal demise and hypertension. Understanding of the mechanisms by which TNF-α causes pathology is important for the use of anti-TNF-α therapeutic agents in pregnancies complicated by PE.
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Affiliation(s)
- Aswathi Jayaram
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Evangeline Deer
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Lorena M Amaral
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Nathan Campbell
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Venkata Ramana Vaka
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Mark Cunningham
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Tarek Ibrahim
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Denise C Cornelius
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Babbette B LaMarca
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States.
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18
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He RP, Jin Z, Ma RY, Hu FD, Dai JY. Network pharmacology unveils spleen-fortifying effect of Codonopsis Radix on different gastric diseases based on theory of “same treatment for different diseases” in traditional Chinese medicine. CHINESE HERBAL MEDICINES 2021; 13:189-201. [PMID: 36117498 PMCID: PMC9476800 DOI: 10.1016/j.chmed.2020.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/13/2020] [Accepted: 10/23/2020] [Indexed: 12/08/2022] Open
Abstract
Objective Methods Results Conclusion
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19
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Chen Y, Gaber T. Hypoxia/HIF Modulates Immune Responses. Biomedicines 2021; 9:biomedicines9030260. [PMID: 33808042 PMCID: PMC8000289 DOI: 10.3390/biomedicines9030260] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 02/07/2023] Open
Abstract
Oxygen availability varies throughout the human body in health and disease. Under physiological conditions, oxygen availability drops from the lungs over the blood stream towards the different tissues into the cells and the mitochondrial cavities leading to physiological low oxygen conditions or physiological hypoxia in all organs including primary lymphoid organs. Moreover, immune cells travel throughout the body searching for damaged cells and foreign antigens facing a variety of oxygen levels. Consequently, physiological hypoxia impacts immune cell function finally controlling innate and adaptive immune response mainly by transcriptional regulation via hypoxia-inducible factors (HIFs). Under pathophysiological conditions such as found in inflammation, injury, infection, ischemia and cancer, severe hypoxia can alter immune cells leading to dysfunctional immune response finally leading to tissue damage, cancer progression and autoimmunity. Here we summarize the effects of physiological and pathophysiological hypoxia on innate and adaptive immune activity, we provide an overview on the control of immune response by cellular hypoxia-induced pathways with focus on the role of HIFs and discuss the opportunity to target hypoxia-sensitive pathways for the treatment of cancer and autoimmunity.
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Affiliation(s)
- Yuling Chen
- Charité—Universitätsmedizin Berlin, Corporate Ember of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Rheumatology and Clinical Immunology, Charitéplatz 1, 10117 Berlin, Germany;
| | - Timo Gaber
- Charité—Universitätsmedizin Berlin, Corporate Ember of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Rheumatology and Clinical Immunology, Charitéplatz 1, 10117 Berlin, Germany;
- German Rheumatism Research Centre (DRFZ) Berlin, a Leibniz Institute, Charitéplatz 1, 10117 Berlin, Germany
- Correspondence: ; Tel.: +49-30-450-513364
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20
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Maldonado-Lasunción I, O’Neill N, Umland O, Verhaagen J, Oudega M. Macrophage-Derived Inflammation Induces a Transcriptome Makeover in Mesenchymal Stromal Cells Enhancing Their Potential for Tissue Repair. Int J Mol Sci 2021; 22:E781. [PMID: 33466704 PMCID: PMC7828776 DOI: 10.3390/ijms22020781] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 12/15/2022] Open
Abstract
Pre-clinical and clinical studies revealed that mesenchymal stromal cell (MSC) transplants elicit tissue repair. Conditioning MSC prior to transplantation may boost their ability to support repair. We investigated macrophage-derived inflammation as a means to condition MSC by comprehensively analyzing their transcriptome and secretome. Conditioning MSC with macrophage-derived inflammation resulted in 3208 differentially expressed genes, which were annotated with significantly enriched GO terms for 1085 biological processes, 85 cellular components, and 79 molecular functions. Inflammation-mediated conditioning increased the secretion of growth factors that are key for tissue repair, including vascular endothelial growth factor, hepatocyte growth factor, nerve growth factor and glial-derived neurotrophic factor. Furthermore, we found that inflammation-mediated conditioning induces transcriptomic changes that challenge the viability and mobility of MSC. Our data support the notion that macrophage-derived inflammation stimulates MSC to augment their paracrine repair-supporting activity. The results suggest that inflammatory pre-conditioning enhances the therapeutic potential of MSC transplants.
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Affiliation(s)
- Inés Maldonado-Lasunción
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA;
- Department of Regeneration of Sensorimotor Systems, Netherlands Institute for Neuroscience, Institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam 1105 BA, The Netherlands;
- Shirley Ryan AbilityLab, Chicago, IL 60611, USA
- Department of Physical Therapy and Human Movements Sciences, Northwestern University, Chicago, IL 60611, USA
| | - Nick O’Neill
- The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL 33136, USA;
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Oliver Umland
- Diabetes Research Institute, University of Miami, Miami, FL 33136, USA;
| | - Joost Verhaagen
- Department of Regeneration of Sensorimotor Systems, Netherlands Institute for Neuroscience, Institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam 1105 BA, The Netherlands;
| | - Martin Oudega
- Shirley Ryan AbilityLab, Chicago, IL 60611, USA
- Department of Physical Therapy and Human Movements Sciences, Northwestern University, Chicago, IL 60611, USA
- Department of Physiology, Northwestern University, Chicago, IL 60611, USA
- Edward Hines Jr. VA Hospital, Hines, IL 60141, USA
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21
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Li X, Berg NK, Mills T, Zhang K, Eltzschig HK, Yuan X. Adenosine at the Interphase of Hypoxia and Inflammation in Lung Injury. Front Immunol 2021; 11:604944. [PMID: 33519814 PMCID: PMC7840604 DOI: 10.3389/fimmu.2020.604944] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/25/2020] [Indexed: 12/19/2022] Open
Abstract
Hypoxia and inflammation often coincide in pathogenic conditions such as acute respiratory distress syndrome (ARDS) and chronic lung diseases, which are significant contributors to morbidity and mortality for the general population. For example, the recent global outbreak of Coronavirus disease 2019 (COVID-19) has placed viral infection-induced ARDS under the spotlight. Moreover, chronic lung disease ranks the third leading cause of death in the United States. Hypoxia signaling plays a diverse role in both acute and chronic lung inflammation, which could partially be explained by the divergent function of downstream target pathways such as adenosine signaling. Particularly, hypoxia signaling activates adenosine signaling to inhibit the inflammatory response in ARDS, while in chronic lung diseases, it promotes inflammation and tissue injury. In this review, we discuss the role of adenosine at the interphase of hypoxia and inflammation in ARDS and chronic lung diseases, as well as the current strategy for therapeutic targeting of the adenosine signaling pathway.
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Affiliation(s)
- Xiangyun Li
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
- Department of Anesthesiology, Tianjin Medical University NanKai Hospital, Tianjin, China
| | - Nathanial K. Berg
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Tingting Mills
- Department of Biochemistry, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Kaiying Zhang
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Holger K. Eltzschig
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Xiaoyi Yuan
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
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22
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Hofmann E, Fink J, Eberl A, Prugger EM, Kolb D, Luze H, Schwingenschuh S, Birngruber T, Magnes C, Mautner SI, Kamolz LP, Kotzbeck P. A novel human ex vivo skin model to study early local responses to burn injuries. Sci Rep 2021; 11:364. [PMID: 33432026 PMCID: PMC7801530 DOI: 10.1038/s41598-020-79683-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/23/2020] [Indexed: 01/29/2023] Open
Abstract
Burn injuries initiate numerous processes such as heat shock response, inflammation and tissue regeneration. Reliable burn models are needed to elucidate the exact sequence of local events to be able to better predict when local inflammation triggers systemic inflammatory processes. In contrast to other ex vivo skin culture approaches, we used fresh abdominal skin explants to introduce contact burn injuries. Histological and ultrastructural analyses confirmed a partial-thickness burn pathology. Gene expression patterns and cytokine production profiles of key mediators of the local inflammation, heat shock response, and tissue regeneration were analyzed for 24 h after burn injury. We found significantly increased expression of factors involved in tissue regeneration and inflammation soon after burn injury. To investigate purely inflammation-mediated reactions we injected lipopolysaccharide into the dermis. In comparison to burn injury, lipopolysaccharide injection initiated an inflammatory response while expression patterns of heat shock and tissue regeneration genes were unaffected for the duration of the experiment. This novel ex vivo human skin model is suitable to study the local, early responses to skin injuries such as burns while maintaining an intact overall tissue structure and it gives valuable insights into local mechanisms at the very beginning of the wound healing process after burn injuries.
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Affiliation(s)
- Elisabeth Hofmann
- COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Julia Fink
- COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Anita Eberl
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Eva-Maria Prugger
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Dagmar Kolb
- Core Facility Ultrastructure Analysis, Center for Medical Research, Medical University of Graz, Graz, Austria
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria
| | - Hanna Luze
- COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Simon Schwingenschuh
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Thomas Birngruber
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Christoph Magnes
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Selma I Mautner
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
- Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria
| | - Lars-Peter Kamolz
- COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Petra Kotzbeck
- COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria.
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.
- Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria.
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23
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Wilson JW, Shakir D, Batie M, Frost M, Rocha S. Oxygen-sensing mechanisms in cells. FEBS J 2020; 287:3888-3906. [PMID: 32446269 DOI: 10.1111/febs.15374] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/24/2020] [Accepted: 05/11/2020] [Indexed: 12/15/2022]
Abstract
The importance of oxygen for the survival of multicellular and aerobic organisms is well established and documented. Over the years, increased knowledge of its use for bioenergetics has placed oxygen at the centre of research on mitochondria and ATP-generating processes. Understanding the molecular mechanisms governing cellular oxygen sensing and response has allowed for the discovery of novel pathways oxygen is involved in, culminating with the award of the Nobel Prize for Medicine and Physiology in 2019 to the pioneers of this field, Greg Semenza, Peter Ratcliffe and William Kaelin. However, it is now beginning to be appreciated that oxygen can be a signalling molecule involved in a vast array of molecular processes, most of which impinge on gene expression control. This review will focus on the knowns and unknowns of oxygen as a signalling molecule, highlighting the role of 2-oxoglutarate-dependent dioxygenases as central players in the cellular response to deviations in oxygen tension.
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Affiliation(s)
- James W Wilson
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, UK
| | - Dilem Shakir
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, UK
| | - Michael Batie
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, UK
| | - Mark Frost
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, UK
| | - Sonia Rocha
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, UK
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Chu B, Zhang A, Huang J, Peng X, You L, Wu C, Tang S. Preparation and biological evaluation of a novel agarose-grafting-hyaluronan scaffold for accelerated wound regeneration. Biomed Mater 2020; 15:045009. [PMID: 32109900 DOI: 10.1088/1748-605x/ab7b3e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
At present, seeking an effective dressing for wound regeneration has drawn considerable interest. In this paper, a novel agarose-grafting-hyaluronan (Ag-g-HA) scaffold was synthesized for rapid wound healing. Elemental analysis results showed that the HA grafting rate of Ag-g-HA was ∼69%. Ag-g-HA remained bioactive to accelerate cell proliferation and stimulate secretion of TNF-α for macrophagocyte RAW 264.7, and collagen I and collagen III for fibroblast 3T3. An i n vivo study demonstrated that Ag-g-HA showed a faster repair cycle and a better skin histological structure for a full-thickness skin defect. The collagen I, collagen III and TNF-α secreted by mice for Ag-g-HA were similiar to HA. Ag-g-HA showed a similiar biological activity to HA but had a longer degradation time through its improved insolubility. These findings demonstrate that the Ag-g-HA scaffold accelerated wound healing, and could be a promising novel scaffold for tissue engineering and regenerative medicine.
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Affiliation(s)
- Bin Chu
- Department of Biomedical Engineering, Jinan University, Guangzhou 510632, People's Republic of China. Key Laboratory of Biomedical Materials and Implant Devices, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, People's Republic of China
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Cui HS, Joo SY, Cho YS, Park JH, Kim JB, Seo CH. Effect of Combining Low Temperature Plasma, Negative Pressure Wound Therapy, and Bone Marrow Mesenchymal Stem Cells on an Acute Skin Wound Healing Mouse Model. Int J Mol Sci 2020; 21:E3675. [PMID: 32456187 PMCID: PMC7279345 DOI: 10.3390/ijms21103675] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/11/2020] [Accepted: 05/21/2020] [Indexed: 12/24/2022] Open
Abstract
Low-temperature plasma (LTP; 3 min/day), negative pressure wound therapy (NPWT; 4 h/day), and bone marrow mesenchymal stem cells (MSCs; 1×106 cells/day) were used as mono- and combination therapy in an acute excisional skin wound-healing ICR mouse model. These therapies have been beneficial in treating wounds. We investigated the effectiveness of monotherapy with LTP, NPWT, and MSC and combination therapy with LTP + MSC, LTP + NPWT, NPWT + MSC, and LTP + NPWT + MSC on skin wounds in mice for seven consecutive days. Gene expression, protein expression, and epithelial thickness were analyzed using real time polymerase chain reaction (RT-qPCR), western blotting, and hematoxylin and eosin staining (H&E), respectively. Wound closure was also evaluated. Wound closure was significantly accelerated in monotherapy groups, whereas more accelerated in combination therapy groups. Tumor necrosis factor-α (TNF-α) expression was increased in the LTP monotherapy group but decreased in the NPWT, MSC, and combination therapy groups. Expressions of vascular endothelial growth factor (VEGF), α-smooth muscle actin (α-SMA), and type I collagen were increased in the combination therapy groups. Re-epithelialization was also considerably accelerated in combination therapy groups. Our findings suggest that combination therapy with LPT, NPWT, and MSC exert a synergistic effect on wound healing, representing a promising strategy for the treatment of acute wounds.
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Affiliation(s)
- Hui Song Cui
- Burn Institute, Department of Rehabilitation Medicine, Hangang Sacred Heart Hospital, College of Medicine, Hallym University, Seoul 07247, Korea; (H.S.C.); (J.H.P.)
| | - So Young Joo
- Department of Rehabilitation Medicine, Hangang Sacred Heart Hospital, College of Medicine, Hallym University, Seoul 07247, Korea; (S.Y.J.); (Y.S.C.)
| | - Yoon Soo Cho
- Department of Rehabilitation Medicine, Hangang Sacred Heart Hospital, College of Medicine, Hallym University, Seoul 07247, Korea; (S.Y.J.); (Y.S.C.)
| | - Ji Heon Park
- Burn Institute, Department of Rehabilitation Medicine, Hangang Sacred Heart Hospital, College of Medicine, Hallym University, Seoul 07247, Korea; (H.S.C.); (J.H.P.)
| | - June-Bum Kim
- Department of Pediatrics, Hangang Sacred Heart Hospital, College of Medicine, Hallym University, Seoul 07247, Korea
| | - Cheong Hoon Seo
- Department of Rehabilitation Medicine, Hangang Sacred Heart Hospital, College of Medicine, Hallym University, Seoul 07247, Korea; (S.Y.J.); (Y.S.C.)
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Lodge KM, Cowburn AS, Li W, Condliffe AM. The Impact of Hypoxia on Neutrophil Degranulation and Consequences for the Host. Int J Mol Sci 2020; 21:ijms21041183. [PMID: 32053993 PMCID: PMC7072819 DOI: 10.3390/ijms21041183] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/06/2020] [Accepted: 02/08/2020] [Indexed: 12/16/2022] Open
Abstract
Neutrophils are key effector cells of innate immunity, rapidly recruited to defend the host against invading pathogens. Neutrophils may kill pathogens intracellularly, following phagocytosis, or extracellularly, by degranulation and the release of neutrophil extracellular traps; all of these microbicidal strategies require the deployment of cytotoxic proteins and proteases, packaged during neutrophil development within cytoplasmic granules. Neutrophils operate in infected and inflamed tissues, which can be profoundly hypoxic. Neutrophilic infiltration of hypoxic tissues characterises a myriad of acute and chronic infectious and inflammatory diseases, and as well as potentially protecting the host from pathogens, neutrophil granule products have been implicated in causing collateral tissue damage in these scenarios. This review discusses the evidence for the enhanced secretion of destructive neutrophil granule contents observed in hypoxic environments and the potential mechanisms for this heightened granule exocytosis, highlighting implications for the host. Understanding the dichotomy of the beneficial and detrimental consequences of neutrophil degranulation in hypoxic environments is crucial to inform potential neutrophil-directed therapeutics in order to limit persistent, excessive, or inappropriate inflammation.
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Affiliation(s)
- Katharine M. Lodge
- Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London SW3 6LY, UK; (K.M.L.); (A.S.C.)
| | - Andrew S. Cowburn
- Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London SW3 6LY, UK; (K.M.L.); (A.S.C.)
| | - Wei Li
- Department of Medicine, University of Cambridge, Cambridge CB2 0SP, UK;
| | - Alison M. Condliffe
- Department of Infection, Immunity and Cardiovascular Diseases, University of Sheffield, Sheffield S10 2RX, UK
- Correspondence:
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He J, Yu Y, Qin XW, Zeng RY, Wang YY, Li ZM, Mi S, Weng SP, Guo CJ, He JG. Identification and functional analysis of the Mandarin fish (Siniperca chuatsi) hypoxia-inducible factor-1α involved in the immune response. FISH & SHELLFISH IMMUNOLOGY 2019; 92:141-150. [PMID: 31176007 DOI: 10.1016/j.fsi.2019.04.298] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 04/24/2019] [Accepted: 04/27/2019] [Indexed: 06/09/2023]
Abstract
Mandarin fish (Siniperca chuatsi) is a popular cultured freshwater fish species due to its high market value in China. With increasing density of breeding, mandarin fish is often cultured under low environmental oxygen concentrations (hypoxia). In this study, the relative expression levels of hypoxia response element (HRE)-luciferase reporter and the HIF signaling pathway downstream genes (scldha, scvegf, and scglut-1) were significantly increased by hypoxic stress, thereby indicating that mandarin fish has an HIF signaling pathway. The mandarin fish HIF-1α (scHIF-1α) was also characterized. Multiple sequence alignments showed that scHIF-1α presented similar architectures to other known vertebrates. Subcellular localization analysis showed that scHIF-1α was mainly located in the nucleus of the mandarin fish fry-1 (MFF-1) cells. The role of scHIF-1α in the regulation of the HIF signaling pathway was confirmed. Overexpression of scHIF-1α could induce the HIF signaling pathway, whereas knockdown of scHIF-1α inhibited the activity of the HIF-1 signaling pathway. Tissue distribution analysis showed that schif-1α was significantly highly expressed in the blood, heart, and liver, which indicated that the main function of scHIF-1α was closely related to the circulatory system. Furthermore, scHIF-1α expression was significantly induced by poly I:C, poly dG:dC or PMA, thereby indicating that scHIF-1α was involved in the immune response. HIF-1α plays an important role in pathogen infections in mammals, but its role in fish is rarely investigated. Overexpression of scHIF-1α could inhibit MRV and SCRV infections, whereas knockdown of scHIF-1α could promote such infections. Those results suggested that scHIF-1α played an important role in fish virus infection. Our study will help understand the hypoxia associated with the outbreaks of aquatic viral disease.
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Affiliation(s)
- Jian He
- State Key Laboratory for Biocontrol / Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, No.132 Waihuan Dong Road, Higher Education Mega Center, Guangzhou, Guangdong, 510006, PR China
| | - Yang Yu
- State Key Laboratory for Biocontrol / Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, No.132 Waihuan Dong Road, Higher Education Mega Center, Guangzhou, Guangdong, 510006, PR China
| | - Xiao-Wei Qin
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China
| | - Ruo-Yun Zeng
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China
| | - Yuan-Yuan Wang
- State Key Laboratory for Biocontrol / Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, No.132 Waihuan Dong Road, Higher Education Mega Center, Guangzhou, Guangdong, 510006, PR China
| | - Zhi-Min Li
- State Key Laboratory for Biocontrol / Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, No.132 Waihuan Dong Road, Higher Education Mega Center, Guangzhou, Guangdong, 510006, PR China
| | - Shu Mi
- State Key Laboratory for Biocontrol / Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, No.132 Waihuan Dong Road, Higher Education Mega Center, Guangzhou, Guangdong, 510006, PR China
| | - Shao-Ping Weng
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China
| | - Chang-Jun Guo
- State Key Laboratory for Biocontrol / Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, No.132 Waihuan Dong Road, Higher Education Mega Center, Guangzhou, Guangdong, 510006, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China; Institute of Aquatic Economic Animals / Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China.
| | - Jian-Guo He
- State Key Laboratory for Biocontrol / Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, No.132 Waihuan Dong Road, Higher Education Mega Center, Guangzhou, Guangdong, 510006, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China; Institute of Aquatic Economic Animals / Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China
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Tayman MA, Kurgan Ş, Önder C, Güney Z, Serdar MA, Kantarcı A, Günhan M. A disintegrin-like and metalloproteinase with thrombospondin-1 (ADAMTS-1) levels in gingival crevicular fluid correlate with vascular endothelial growth factor-A, hypoxia-inducible factor-1α, and clinical parameters in patients with advanced periodontitis. J Periodontol 2019; 90:1182-1189. [PMID: 31020669 DOI: 10.1002/jper.18-0195] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 12/14/2018] [Accepted: 02/22/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND ADAMTS (a disintegrin-like and metalloproteinase with thrombospondin) are a family of proteinases that are structurally similar to the family of matrix metalloproteinases with critical roles in damage and repair of the extracellular matrix. Their functions are closely related to inflammation, hypoxia, and vascularization. Our aim was to determine levels of ADAMTS-1 in gingival crevicular fluid (GCF) in patients with advanced periodontal diseases and identify their association with hypoxia-inducible factor-1alpha (HIF-1α), vascular endothelial growth factor (VEGF-A), and clinical parameters of periodontitis. METHODS The study consisted of three groups: healthy individuals (control; n = 20), generalized chronic periodontitis (CP; n = 21), and generalized aggressive periodontitis (GAgP; n = 20). Clinical parameters were measured. Levels of ADAMTS-1, VEGF-A, and HIF-1α in GCF and serum were quantified by enzyme-linked immunosorbent assay (ELISA) and reported as total amounts and concentration. RESULTS ADAMTS-1 total amount in GCF were significantly higher in patients with CP and GAgP compared with healthy individuals (P < 0.05). HIF-1α total amount in GCF were also higher in periodontitis groups compared with the control group (P < 0.05). GCF total VEGF-A content was significantly higher in the GAgP group compared with the CP and the controls (respectively; P = 0.023, P = 0.003). There was a significant correlation between ADAMTS-1, VEGF-A, and HIF-1α levels in the GCF and clinical periodontal parameters (probing depth [PD], bleeding on probing [BOP], and clinical attachment loss (CAL); P < 0.05). CONCLUSION ADAMTS-1 may play a role in advanced periodontal disease pathogenesis in correlation with tissue hypoxia and vascularization.
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Affiliation(s)
- Mahmure Ayşe Tayman
- Department of Periodontology, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Şivge Kurgan
- Department of Periodontology, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Canan Önder
- Department of Periodontology, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Zeliha Güney
- Department of Periodontology, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Muhittin A Serdar
- Department of Medical Biochemistry, School of Medicine, Acibadem University, Ankara, Turkey
| | - Alpdoğan Kantarcı
- Forsyth Institute, Department of Applied Oral Sciences, Center for Periodontology, Cambridge, MA, USA
| | - Meral Günhan
- Department of Periodontology, Faculty of Dentistry, Ankara University, Ankara, Turkey
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Jo YY, Kim DW, Choi JY, Kim SG. 4-Hexylresorcinol and silk sericin increase the expression of vascular endothelial growth factor via different pathways. Sci Rep 2019; 9:3448. [PMID: 30837602 PMCID: PMC6400942 DOI: 10.1038/s41598-019-40027-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 02/07/2019] [Indexed: 12/17/2022] Open
Abstract
Angiogenesis plays an important role in active inflammation and wound healing. Our results showed that silk sericin and 4-hexylresorcinol (4HR) increased vascular endothelial growth factor (VEGF) expression in a dose-dependent manner in RAW264.7 cells. Unlike 4HR, silk sericin increased the expression of hypoxia inducible factor-1α (HIF-1α) and HIF-2α. Pretreatment with an HIF inhibitor decreased the sericin-induced increase in VEGF expression. However, the HIF inhibitor did not affect the 4HR-induced increase in VEGF expression. An inhibitor of matrix metalloproteinase (MMP) declined the 4HR-induced increase in VEGF expression. Silk sericin increased production of reactive oxygen species (ROS), whereas 4HR decreased ROS. M1 markers were increased by silk sericin treatment, and M2 markers were increased by 4HR treatment. VEGF and angiogenin expression were higher in rats treated with a 4HR-incorporated silk mat than in rats treated with a silk mat alone. In conclusion, silk sericin and 4HR increased VEGF expression in RAW264.7 cells via HIF-mediated and MMP-mediated pathways, respectively. Silk sericin exerted like pro-oxidant effects and 4HR exerted anti-oxidant effects. Rats treated with a 4HR-incorporated silk mat showed higher levels of VEGF and angiogenin than those treated with a silk mat alone.
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Affiliation(s)
- You-Young Jo
- Sericultural and Apicultural Division, National Institute of Agricultural Science, RDA, Wanju, 55365, Republic of Korea
| | - Dae-Won Kim
- Department of Oral Biochemistry, College of Dentistry, Gangneung-Wonju National University, Gangneung, 28644, Republic of Korea
| | - Je-Yong Choi
- School of Biochemistry and Cell Biology, BK21 Plus KNU Biomedical Convergence Program, Skeletal Diseases Analysis Center, Korea Mouse Phenotyping Center (KMPC), Kyungpook National University, Daegu, 41944, Republic of Korea
| | - Seong-Gon Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 28644, Republic of Korea.
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Frost J, Ciulli A, Rocha S. RNA-seq analysis of PHD and VHL inhibitors reveals differences and similarities to the hypoxia response. Wellcome Open Res 2019; 4:17. [PMID: 30801039 PMCID: PMC6376255 DOI: 10.12688/wellcomeopenres.15044.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2019] [Indexed: 12/17/2022] Open
Abstract
Background: Hypoxia-inducible factor (HIF) transcription factors are well known to control the transcriptional response to hypoxia. Given the importance of cellular response to hypoxia, a number of pharmacological agents to interfere with this pathway have been developed and entered pre-clinical or clinical trial phases. However, how similar or divergent the transcriptional response elicited by different points of interference in cells is currently unknown. Methods: We performed RNA-sequencing to analyse the similarities and differences of transcriptional response in HeLa cells treated with hypoxia or chemical agents that stabilise HIF by inhibiting components of the hypoxia signalling pathway - prolyl hydroxylase (PHD) inhibitor or von Hippel-Lindau (VHL) inhibitor. Results: This analysis revealed that hypoxia produces the highest changes in gene transcription, with activation and repression of genes being in large numbers. Treatment with the PHD inhibitor IOX2 or the VHL inhibitor VH032 led mostly to gene activation, majorly via a HIF-dependent manner. These results were also confirmed by qRT-PCR using more specific and/or efficient inhibitors, FG-4592 (PHDs) and VH298 (VHL). Conclusion: PHD inhibition and VHL inhibition mimic gene activation promoted by hypoxia via a HIF-dependent manner. However, gene repression is mostly associated with the hypoxia response and not common to the response elicited by inhibitors of the pathway.
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Affiliation(s)
- Julianty Frost
- Biochemistry-Institute of Integrative Biology, University of Liverpool, Liverpool, L697ZB, UK
| | - Alessio Ciulli
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, Dundee, DD15EH, UK
| | - Sonia Rocha
- Biochemistry-Institute of Integrative Biology, University of Liverpool, Liverpool, L697ZB, UK
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Tasneem S, Liu B, Li B, Choudhary MI, Wang W. Molecular pharmacology of inflammation: Medicinal plants as anti-inflammatory agents. Pharmacol Res 2019; 139:126-140. [DOI: 10.1016/j.phrs.2018.11.001] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 10/31/2018] [Accepted: 11/01/2018] [Indexed: 12/20/2022]
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Hypoxia potentiates monocyte-derived dendritic cells for release of tumor necrosis factor α via MAP3K8. Biosci Rep 2018; 38:BSR20182019. [PMID: 30463908 PMCID: PMC6294625 DOI: 10.1042/bsr20182019] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 11/20/2018] [Accepted: 11/20/2018] [Indexed: 01/22/2023] Open
Abstract
Dendritic cells (DCs) constantly sample peripheral tissues for antigens, which are subsequently ingested to derive peptides for presentation to T cells in lymph nodes. To do so, DCs have to traverse many different tissues with varying oxygen tensions. Additionally, DCs are often exposed to low oxygen tensions in tumors, where vascularization is lacking, as well as in inflammatory foci, where oxygen is rapidly consumed by inflammatory cells during the respiratory burst. DCs respond to oxygen levels to tailor immune responses to such low-oxygen environments. In the present study, we identified a mechanism of hypoxia-mediated potentiation of release of tumor necrosis factor α (TNF-α), a pro-inflammatory cytokine with important roles in both anti-cancer immunity and autoimmune disease. We show in human monocyte-derived DCs (moDCs) that this potentiation is controlled exclusively via the p38/mitogen-activated protein kinase (MAPK) pathway. We identified MAPK kinase kinase 8 (MAP3K8) as a target gene of hypoxia-induced factor (HIF), a transcription factor controlled by oxygen tension, upstream of the p38/MAPK pathway. Hypoxia increased expression of MAP3K8 concomitant with the potentiation of TNF-α secretion. This potentiation was no longer observed upon siRNA silencing of MAP3K8 or with a small molecule inhibitor of this kinase, and this also decreased p38/MAPK phosphorylation. However, expression of DC maturation markers CD83, CD86, and HLA-DR were not changed by hypoxia. Since DCs play an important role in controlling T-cell activation and differentiation, our results provide novel insight in understanding T-cell responses in inflammation, cancer, autoimmune disease and other diseases where hypoxia is involved.
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Sun B, Yuan J, Wang S, Lin J, Zhang W, Shao J, Wang R, Shi B, Hu H. Qingchang Suppository Ameliorates Colonic Vascular Permeability in Dextran-Sulfate-Sodium-Induced Colitis. Front Pharmacol 2018; 9:1235. [PMID: 30429788 PMCID: PMC6220057 DOI: 10.3389/fphar.2018.01235] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/11/2018] [Indexed: 12/13/2022] Open
Abstract
Ulcerative colitis (UC), with a long course and repeated attack, severely affects patient's life quality and increases economic burden all over the world. However, the concrete causes and mechanisms of UC are still unclear, but it is generally considered that many factors participate in this process. Qingchang Suppository (QCS) has been used in treating rectitis and colitis for about 30 years in Shanghai, China. Its satisfactory clinical effects have been proved. The aim of this study is to investigate the effect and mechanisms of QCS on colonic vascular endothelial barrier in dextran sulfate sodium (DSS)-induced colitis. The results indicated that increased vascular permeability (VP) appeared earlier than increased intestinal epithelial permeability (EP) in the process of DSS-induced colitis. QCS attenuated colonic tissue edema, vascular congestion and inflammatory cell infiltration. QCS inhibited the elevation of MPO, TNF-α, and IL-6 levels in colon tissues and alleviated the microvascular damage induced by DSS. QCS also improved colonic hypoxia and decreased the expression of VEGF, HIF-1α, and iNOS. These results revealed that QCS can reduce colonic VP and can improve vascular endothelial barrier function maybe by regulating the VEGF/HIF-1α signaling pathway.
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Affiliation(s)
- Boyun Sun
- Department of Gastroenterology, China-Canada Center of Research for Digestive Diseases, Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jianye Yuan
- Department of Gastroenterology, China-Canada Center of Research for Digestive Diseases, Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shiying Wang
- Department of Gastroenterology, China-Canada Center of Research for Digestive Diseases, Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jiang Lin
- Department of Gastroenterology, China-Canada Center of Research for Digestive Diseases, Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wanjun Zhang
- Department of Gastroenterology, China-Canada Center of Research for Digestive Diseases, Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jiadong Shao
- Department of Gastroenterology, China-Canada Center of Research for Digestive Diseases, Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ruiqing Wang
- Department of Gastroenterology, China-Canada Center of Research for Digestive Diseases, Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Bei Shi
- Department of Gastroenterology, China-Canada Center of Research for Digestive Diseases, Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hongyi Hu
- Department of Gastroenterology, China-Canada Center of Research for Digestive Diseases, Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Suzuki T, Minagawa S, Yamazaki T, Arai T, Kanai M, Shinjo S, Goda N. Loss of hypoxia inducible factor-1α aggravates γδ T-cell-mediated inflammation during acetaminophen-induced liver injury. Hepatol Commun 2018; 2:571-581. [PMID: 29761172 PMCID: PMC5944581 DOI: 10.1002/hep4.1175] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 02/21/2018] [Accepted: 03/01/2018] [Indexed: 12/29/2022] Open
Abstract
Acetaminophen (APAP)-induced liver injury is closely associated with acute hepatic inflammation. Hypoxia-inducible factor-1 (HIF-1) is activated during immunological processes and regulates gene expressions in various types of immune cells. Although HIF-1 controls the differentiation and functions of conventional T cells in chronic inflammation, the pathological importance of HIF-1 in innate-like T cells during acute inflammation remains unknown. Here, we investigated the role of HIF-1 in innate-like γδ T cells during APAP-induced acute liver injury. In response to APAP administration, T-cell-specific Hif-1α gene knockout mice sustained severe liver damage compared to wild-type control mice but without any impacts on the initial hepatic insult. This severe liver damage was accompanied by excessive neutrophil infiltration into the liver, increased serum interleukin (IL)-17A levels, and increased hepatic expressions of C-X-C chemokine ligand (Cxcl) 1 and Cxcl2. Neutrophil depletion and IL-17A neutralization completely abolished the aggravated phenotypes in T-cell-specific Hif-1α gene knockout mice. Loss of the Hif-1α gene enhanced the aberrant accumulation of IL-17A-producing innate-like γδ T cells in the affected liver with no apparent effects on their IL-17A-producing ability. Adoptive transfer of Hif-1α-deficient splenic γδ T cells into recombination activating gene 2 (Rag2)-deficient mice aggravated APAP-induced liver injury with increased neutrophil accumulation in the liver compared to that of wild-type γδ T cells. Furthermore, Hif-1α-deficient γδ T cells selectively showed aberrantly enhanced migratory ability. This ability was totally abolished by treatment with the mitochondrial adenosine triphosphate synthase inhibitor oligomycin. Conclusion: Deletion of Hif-1α gene in T cells aggravates APAP-induced acute inflammatory responses by enhancing aberrant innate-like γδ T-cell recruitment, thereby increasing excessive neutrophil infiltration into the liver. (Hepatology Communications 2018;2:571-581).
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Affiliation(s)
- Tomohiro Suzuki
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering Waseda University Tokyo Japan
| | - Shoko Minagawa
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering Waseda University Tokyo Japan
| | - Takashi Yamazaki
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering Waseda University Tokyo Japan
| | - Takatomo Arai
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering Waseda University Tokyo Japan
| | - Mai Kanai
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering Waseda University Tokyo Japan
| | - Satoko Shinjo
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering Waseda University Tokyo Japan
| | - Nobuhito Goda
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering Waseda University Tokyo Japan
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Bowser JL, Phan LH, Eltzschig HK. The Hypoxia-Adenosine Link during Intestinal Inflammation. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2018; 200:897-907. [PMID: 29358413 PMCID: PMC5784778 DOI: 10.4049/jimmunol.1701414] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 11/28/2017] [Indexed: 12/14/2022]
Abstract
Intestinal inflammation is a key element in inflammatory bowel disease and is related to a combination of factors, including genetics, mucosal barrier dysfunction, bacteria translocation, deleterious host-microbe interactions, and dysregulated immune responses. Over the past decade, it has been appreciated that these inflammatory lesions are associated with profound tissue hypoxia. Interestingly, an endogenous adaptive response under the control of hypoxia signaling is enhancement in adenosine signaling, which impacts these different endpoints, including promoting barrier function and encouraging anti-inflammatory activity. In this review, we discuss the hypoxia-adenosine link in inflammatory bowel disease, intestinal ischemia/reperfusion injury, and colon cancer. In addition, we provide a summary of clinical implications of hypoxia and adenosine signaling in intestinal inflammation and disease.
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Affiliation(s)
- Jessica L Bowser
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030
| | - Luan H Phan
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030
| | - Holger K Eltzschig
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030
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36
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Le Rossignol S, Ketheesan N, Haleagrahara N. Redox-sensitive transcription factors play a significant role in the development of rheumatoid arthritis. Int Rev Immunol 2017; 37:129-143. [PMID: 28898138 DOI: 10.1080/08830185.2017.1363198] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease which is associated with significant morbidity. Redox sensitive transcription factors including NF-κB, HIF, AP-1, and Nrf2 are intimately involved in the pathogenesis of RA. The treatment of this disease is limited by the elusive nature of the pathogenesis of RA. NF-κB is crucial for the maturation of immune cells as well as production of TNFα and MMPs, which escalate RA. HIF is essential for activation of inflammatory cells, angiogenesis and pannus formation in RA. AP-1 regulates cytokine and MMP production as well as synovial hyperplasia which are key processes in RA. Nrf2 is involved with chondrogenesis, osteoblastogenesis, prostaglandin secretion and ROS production in RA. Targeting two or more of these transcription factors may result in increased efficacy than either therapy in isolation. This review will highlight the control specific mediators on these transcription factors, the subsequent effect of these transcription factors once activated, and then mesh this with the pathogenesis of RA. The elucidation of key transcription factor regulation in the pathogenesis of RA may highlight the novel therapy interventions which may prove to have a greater efficacy than those therapies currently available.
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Affiliation(s)
- Scott Le Rossignol
- a College of Medicine and Dentistry , James Cook University Townsville , Queensland , Australia
| | - Natkunam Ketheesan
- b Biomedicine, College of Public Health, Medical and Veterinary Sciences , James Cook University , Townsville , Queensland , Australia.,c Australian Institute of Tropical Health and Medicine , James Cook University , Townsville , Queensland , Australia
| | - Nagaraja Haleagrahara
- b Biomedicine, College of Public Health, Medical and Veterinary Sciences , James Cook University , Townsville , Queensland , Australia.,c Australian Institute of Tropical Health and Medicine , James Cook University , Townsville , Queensland , Australia
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Huang R, Hayashi Y, Yan X, Bu J, Wang J, Zhang Y, Zhou Y, Tang Y, Wu L, Xu Z, Liu X, Wang Q, Zhou J, Xiao Z, Bridges JP, Marsh RA, Zhang K, Jordan MB, Li Y, Huang G. HIF1A is a critical downstream mediator for hemophagocytic lymphohistiocytosis. Haematologica 2017; 102:1956-1968. [PMID: 28860338 PMCID: PMC5664400 DOI: 10.3324/haematol.2017.174979] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 08/24/2017] [Indexed: 12/19/2022] Open
Abstract
Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening syndrome characterized by overwhelming immune activation. A steroid and chemotherapy-based regimen remains as the first-line of therapy but it has substantial morbidity. Thus, novel, less toxic therapy for HLH is urgently needed. Although differences exist between familial HLH (FHL) and secondary HLH (sHLH), they have many common features. Using bioinformatic analysis with FHL and systemic juvenile idiopathic arthritis, which is associated with sHLH, we identified a common hypoxia-inducible factor 1A (HIF1A) signature. Furthermore, HIF1A protein levels were found to be elevated in the lymphocytic choriomeningitis virus infected Prf1−/− mouse FHL model and the CpG oligodeoxynucleotide-treated mouse sHLH model. To determine the role of HIF1A in HLH, a transgenic mouse with an inducible expression of HIF1A/ARNT proteins in hematopoietic cells was generated, which caused lethal HLH-like phenotypes: severe anemia, thrombocytopenia, splenomegaly, and multi-organ failure upon HIF1A induction. Mechanistically, these mice show type 1 polarized macrophages and dysregulated natural killler cells. The HLH-like phenotypes in this mouse model are independent of both adaptive immunity and interferon-γ, suggesting that HIF1A is downstream of immune activation in HLH. In conclusion, our data reveal that HIF1A signaling is a critical mediator for HLH and could be a novel therapeutic target for this syndrome.
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Affiliation(s)
- Rui Huang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, OH, USA.,Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Yoshihiro Hayashi
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, OH, USA.,Laboratory of Oncology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Japan
| | - Xiaomei Yan
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, OH, USA
| | - Jiachen Bu
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, OH, USA.,Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, China
| | - Jieyu Wang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, OH, USA
| | - Yue Zhang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, OH, USA.,State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Yile Zhou
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, OH, USA
| | - Yuting Tang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, OH, USA.,Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lingyun Wu
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, OH, USA
| | - Zefeng Xu
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Xin Liu
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Qianfei Wang
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jianfeng Zhou
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhijian Xiao
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - James P Bridges
- Perinatal Institute, Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, OH, USA
| | - Rebecca A Marsh
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital, OH, USA
| | - Kejian Zhang
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, OH, USA
| | - Michael B Jordan
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital, OH, USA
| | - Yuhua Li
- Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Gang Huang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, OH, USA
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Buch AS, Schjerling P, Kjaer M, Jorgensen LN, Krarup PM, Ågren MS. Impaired collagen synthesis in the rectum may be a molecular target in anastomotic leakage prophylaxis. Wound Repair Regen 2017; 25:532-535. [PMID: 28371122 DOI: 10.1111/wrr.12535] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 02/07/2017] [Accepted: 02/21/2017] [Indexed: 02/06/2023]
Abstract
The underlying molecular mechanisms for anastomotic leakage (AL) after colorectal surgery are unknown and there are no therapeutics for AL prevention. Our aim was to correlate endogenous matrix metalloproteinase (MMP) activity, collagen concentration, and collagen/MMP/cytokine mRNA levels with anatomic location in human colorectal tissue. We enrolled 22 patients in this prospective study: 7 underwent elective laparoscopic sigmoid resection and 15 underwent low anterior resection for colorectal cancer. Full-thickness intestinal tissue rings from anastomoses constructed with a circular stapler were used for the determination of the MMP activity, tissue collagen concentration and mRNA levels. COL1A1 (p = 0.017) and COL3A1 (p = 0.0013) mRNA levels were lower in rectal tissue than in colonic samples. Neither MMP activities nor collagen concentrations differed significantly between the two anatomic locations. By elucidating the factors responsible for the decreased collagen production we may identify specific molecular targets in AL prophylaxis.
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Affiliation(s)
- Anastasia S Buch
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Peter Schjerling
- Department of Orthopedic Surgery M, Faculty of Health and Medical Sciences, Institute of Sports Medicine, Bispebjerg Hospital and Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
| | - Marie Kjaer
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | | | - Peter-Martin Krarup
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Magnus S Ågren
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.,Copenhagen Wound Healing Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
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Vasconcelos RC, Costa ADLL, Freitas RDA, Bezerra BADA, Santos BRMD, Pinto LP, Gurgel BCDV. Immunoexpression of HIF-1α and VEGF in Periodontal Disease and Healthy Gingival Tissues. Braz Dent J 2017; 27:117-22. [PMID: 27058371 DOI: 10.1590/0103-6440201600533] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Accepted: 01/11/2016] [Indexed: 11/22/2022] Open
Abstract
Hypoxia-inducible factor 1 alpha (HIF-1α) and vascular endothelial growth factor (VEGF) are proteins that stimulate the proliferation and migration of endothelial cells. These proteins have been described in many pathologic and inflammatory conditions, but their involvement in the development of periodontitis has not been thoroughly investigated. This study compared the immunohistochemical expression of these proteins, involved in angiogenesis and hypoxia, by immunostained inflammatory and endothelial cells in periodontal disease and healthy gingival tissues. Gingival tissue samples were divided as follows: 30 samples with chronic periodontitis, 30 with chronic gingivitis, and 30 of healthy gingiva. Results were analyzed statistically by the Kruskal-Wallis, Mann-Whitney and Spearman correlation tests (p=0.01). Inflammatory and endothelial cells were found to express these proteins. Periodontitis showed median percentage of HIF-1α-positive cells of 39.6%, 22.0% in cases of gingivitis and 0.9% in the healthy gingiva group (p=0.001). For VEGF, median percentage of immunopositive cells was 68.7% for periodontitis, 66.1% in cases for gingivitis, and 19.2% for healthy gingival specimens (p<0.001). Significant correlation between VEGF and HIF-1α was also observed in healthy gingiva (p<0.001).The increased expression of HIF-1α and VEGF in periodontitis, compared to gingivitis and healthy gingiva, suggests possible activation of the HIF-1α pathway in advanced periodontal disease. The correlation between HIF-1α and VEGF expression in healthy gingiva suggests a physiological function for these proteins in conditions of homeostasis. In periodontal disease, HIF-1α and VEGF expression may be regulated by other factors, in addition to hypoxia, such as bacterial endotoxins and inflammatory cytokines.
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Affiliation(s)
- Roseane Carvalho Vasconcelos
- Department of Dentistry, Postgraduate Program, Oral Pathology, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | - Antônio de Lisboa Lopes Costa
- Department of Dentistry, Postgraduate Program, Oral Pathology, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | - Roseana de Almeida Freitas
- Department of Dentistry, Postgraduate Program, Oral Pathology, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | - Bruna Aguiar do Amaral Bezerra
- Department of Dentistry, Postgraduate Program, Oral Pathology, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | | | - Leão Pereira Pinto
- Department of Dentistry, Postgraduate Program, Oral Pathology, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
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Charpentier T, Hammami A, Stäger S. Hypoxia inducible factor 1α: A critical factor for the immune response to pathogens and Leishmania. Cell Immunol 2016; 309:42-49. [DOI: 10.1016/j.cellimm.2016.06.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 06/15/2016] [Accepted: 06/21/2016] [Indexed: 12/17/2022]
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Entinostat up-regulates the CAMP gene encoding LL-37 via activation of STAT3 and HIF-1α transcription factors. Sci Rep 2016; 6:33274. [PMID: 27633343 PMCID: PMC5025742 DOI: 10.1038/srep33274] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 08/24/2016] [Indexed: 12/28/2022] Open
Abstract
Bacterial resistance against classical antibiotics is a growing problem and the development of new antibiotics is limited. Thus, novel alternatives to antibiotics are warranted. Antimicrobial peptides (AMPs) are effector molecules of innate immunity that can be induced by several compounds, including vitamin D and phenyl-butyrate (PBA). Utilizing a luciferase based assay, we recently discovered that the histone deacetylase inhibitor Entinostat is a potent inducer of the CAMP gene encoding the human cathelicidin LL-37. Here we investigate a mechanism for the induction and also find that Entinostat up-regulates human β-defensin 1. Analysis of the CAMP promoter sequence revealed binding sites for the transcription factors STAT3 and HIF-1α. By using short hairpin RNA and selective inhibitors, we found that both transcription factors are involved in Entinostat-induced expression of LL-37. However, only HIF-1α was found to be recruited to the CAMP promoter, suggesting that Entinostat activates STAT3, which promotes transcription of CAMP by increasing the expression of HIF-1α. Finally, we provide in vivo relevance to our findings by showing that Entinostat-elicited LL-37 expression was impaired in macrophages from a patient with a STAT3-mutation. Combined, our findings support a role for STAT3 and HIF-1α in the regulation of LL-37 expression.
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Atretkhany KSN, Drutskaya MS, Nedospasov SA, Grivennikov SI, Kuprash DV. Chemokines, cytokines and exosomes help tumors to shape inflammatory microenvironment. Pharmacol Ther 2016; 168:98-112. [PMID: 27613100 DOI: 10.1016/j.pharmthera.2016.09.011] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Relationship between inflammation and cancer is now well-established and represents a paradigm that our immune response does not necessarily serves solely to protect us from infections and cancer. Many specific mechanisms that link chronic inflammation to cancer promotion and metastasis have been uncovered in the recent years. Here we are focusing on the effects that tumors may exert on inflammatory cascades, tuning the immune system ability to cause tumor promotion or regression. In particular, we discuss the contributions of chemokines, cytokines and exosomes to the processes such as induction of inflammation and tumorigenesis. Overall, tumor-elicited inflammation is a key driver of tumor progression and an essential component of tumor microenvironment.
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Affiliation(s)
- K-S N Atretkhany
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Vavilova Str. 32, Russia; Biological Faculty, Lomonosov Moscow State University, 119234, Moscow, Russia
| | - M S Drutskaya
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Vavilova Str. 32, Russia; Biological Faculty, Lomonosov Moscow State University, 119234, Moscow, Russia
| | - S A Nedospasov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Vavilova Str. 32, Russia; Biological Faculty, Lomonosov Moscow State University, 119234, Moscow, Russia; German Rheumatology Research Center (DRFZ), Berlin, Germany
| | - S I Grivennikov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Vavilova Str. 32, Russia; Fox Chase Cancer Center, Cancer Prevention and Control Program, Philadelphia, PA, USA.
| | - D V Kuprash
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Vavilova Str. 32, Russia; Biological Faculty, Lomonosov Moscow State University, 119234, Moscow, Russia.
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Shwaartz C, Fields AC, Sobrero M, Cohen BD, Divino CM. Effect of Anti-TNF Agents on Postoperative Outcomes in Inflammatory Bowel Disease Patients: a Single Institution Experience. J Gastrointest Surg 2016; 20:1636-42. [PMID: 27405310 DOI: 10.1007/s11605-016-3194-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 06/15/2016] [Indexed: 01/31/2023]
Abstract
BACKGROUND Anti-tumor necrosis factor (TNF) agents have been an integral part in the treatment of inflammatory bowel disease. However, a subset of inflammatory bowel disease patients ultimately requires surgery and up to 30 % of them have undergone treatment with anti-TNF agents. Studies assessing the effect of anti-TNF agents on postoperative outcomes have been inconsistent. The aim of this study is to assess postoperative morbidity in inflammatory bowel disease patients who underwent surgery with anti-TNF therapy prior to surgery. METHODS This is a retrospective review of 282 patients with inflammatory bowel disease undergoing intestinal surgery between 2013 and 2015 at the Mount Sinai Hospital. Patients were divided into two groups based on treatment with anti-TNF agents (infliximab, adalimumab, certolizumab) within 8 weeks of surgery. Thirty-day postoperative outcomes were recorded. Univariate and multivariate statistical analyses were carried out. RESULTS Seventy-three patients were treated with anti-TNF therapy within 8 weeks of surgery while 209 patients did not have exposure. Thirty-day anastomotic leak, intra-abdominal abscess, wound infection, extra-abdominal infection, readmission, and mortality rates were not significantly different between the two groups. CONCLUSIONS The use of anti-TNF medications in inflammatory bowel disease patients within 2 months of intestinal surgery is not associated with an increased risk of 30-day postoperative complications.
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Affiliation(s)
- Chaya Shwaartz
- Department of Surgery, Division of General Surgery, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1041, New York, NY, 10029, USA
| | - Adam C Fields
- Department of Surgery, Division of General Surgery, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1041, New York, NY, 10029, USA
| | - Maximiliano Sobrero
- Department of Surgery, Division of General Surgery, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1041, New York, NY, 10029, USA
| | - Brian D Cohen
- Department of Surgery, Division of General Surgery, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1041, New York, NY, 10029, USA
| | - Celia M Divino
- Department of Surgery, Division of General Surgery, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1041, New York, NY, 10029, USA.
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Wu C, Wang X, Jiang T, Li C, Zhang L, Gao X, Tian F, Li N, Li J. Partial Enteral Nutrition Mitigated Ischemia/Reperfusion-Induced Damage of Rat Small Intestinal Barrier. Nutrients 2016; 8:nu8080502. [PMID: 27548209 PMCID: PMC4997415 DOI: 10.3390/nu8080502] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 08/07/2016] [Accepted: 08/11/2016] [Indexed: 01/03/2023] Open
Abstract
Background and Aims: This study was designed to investigate a relatively optimum dose of partial enteral nutrition (PEN) which effectively attenuates intestinal barrier dysfunction initiated by ischemia/reperfusion injury (IRI). Methods: In experiment 1, 60 male Sprague-Dawley (SD) rats were subjected to intestinal IRI and assigned to six groups according to the different proportion of EN administrations: namely total parenteral nutrition (TPN or 0%EN), 10%EN, 20%EN, 40%EN, 60%EN, and total enteral nutrition (TEN or 100%) groups, the deficits of intraluminal calorie were supplemented by PN. In experiment 2, 50 male SD rats were subjected to intestinal IRI and divided into five groups based on the results of experiment 1: TPN, TEN, 20%EN, TPN plus pretreatment with NF-κB antagonist 30 min before IRI (TPN+PDTC), and TPN plus pretreatment with HIF-1α antagonist 30 min before IRI (TPN+YC-1) groups. Results: In experiment 1, previous IRI combined with subsequent EN shortage disrupted the structure of intestinal epithelial cell and tight junctions (TJs). While 20% dose of EN had an obviously protective effect on these detrimental consequences. In experiment 2, compared with TPN only, 20%EN exerted a significant protection of barrier function of intestinal epithelium. Analogous results were observed when TPN combined with specific NF-κB/HIF-1α inhibitors (PDTC and YC-1). Meanwhile, the expression of NF-κB/HIF-1α had a similar trend among the groups. Conclusions: Our findings indicate that 20%EN is the minimally effective dosage of EN which promotes the recovery of intestinal barrier function after IRI in a rat model. Furthermore, we discreetly speculate that this benefit is, at least partly, related to NF-κB/HIF-1α pathway expression.
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Affiliation(s)
- Chao Wu
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Xinying Wang
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Tingting Jiang
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Chaojun Li
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University and Model Animal Research Center, National Resource Center for Mutant Mice, Nanjing 210093, China.
| | - Li Zhang
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Xuejin Gao
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Feng Tian
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Ning Li
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Jieshou Li
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
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HIF-2α Expression Regulates Sprout Formation into 3D Fibrin Matrices in Prolonged Hypoxia in Human Microvascular Endothelial Cells. PLoS One 2016; 11:e0160700. [PMID: 27490118 PMCID: PMC4973926 DOI: 10.1371/journal.pone.0160700] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 07/22/2016] [Indexed: 11/20/2022] Open
Abstract
Background During short-term hypoxia, Hypoxia Inducible Factors (particular their subunits HIF-1α and HIF-2α) regulate the expression of many genes including the potent angiogenesis stimulator VEGF. However, in some pathological conditions chronic hypoxia occurs and is accompanied by reduced angiogenesis. Objectives We investigated the effect of prolonged hypoxia on the proliferation and sprouting ability of human microvascular endothelial cells and the involvement of the HIFs and Dll4/Notch signaling. Methods and Results Human microvascular endothelial cells (hMVECs), cultured at 20% oxygen for 14 days and seeded on top of 3D fibrin matrices, formed sprouts when stimulated with VEGF-A/TNFα. In contrast, hMVECs precultured at 1% oxygen for 14 days were viable and proliferative, but did not form sprouts into fibrin upon VEGF-A/TNFα stimulation at 1% oxygen. Silencing of HIF-2α with si-RNA partially restored the inhibition of endothelial sprouting, whereas HIF-1α or HIF-3α by si-RNA had no effect. No involvement of Dll4/Notch pathway in the inhibitory effect on endothelial sprouting by prolonged hypoxia was found. In addition, hypoxia decreased the production of urokinase-type plasminogen activator (uPA), needed for migration and invasion, without a significant effect on its inhibitor PAI-1. This was independent of HIF-2α, as si-HIF-2α did not counteract uPA reduction. Conclusion Prolonged culturing of hMVECs at 1% oxygen inhibited endothelial sprouting into fibrin. Two independent mechanisms contribute. Silencing of HIF-2α with si-RNA partially restored the inhibition of endothelial sprouting pointing to a HIF-2α-dependent mechanism. In addition, reduction of uPA contributed to reduced endothelial tube formation in a fibrin matrix during prolonged hypoxia.
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XU CHUNMEI, DONG WEIGUO. Role of hypoxia-inducible factor-1α in pathogenesis and disease evaluation of ulcerative colitis. Exp Ther Med 2016; 11:1330-1334. [PMID: 27073444 PMCID: PMC4812492 DOI: 10.3892/etm.2016.3030] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 01/28/2016] [Indexed: 12/17/2022] Open
Abstract
The main aim of the present study was to measure hypoxia-inducible factor-1α (HIF-1α) in serum and colonic mucosa of ulcerative colitis (UC) patients and to analyze its role in the pathogenesis, disease activity and severity of UC. A total of 47 UC patients and 13 UC in remission patients were recruited for the present study. Ten healthy subjects were also included to serve as controls. HIF-1α in the serum was measured using ELISA. The citrate-microwave-SP immunohistochemical method was used to measure the expression of HIF-1α in colonic mucosa. The results showed that, HIF-1α in serum was notably higher in UC patients (73.21±28.65) than UC in remission patients (44.54±14.75) and controls (42.83±15.49). The difference between UC patients and UC in remission patients was significant (P<0.05). A correlation analysis revealed that, the HIF-1α level in serum was positively associated with disease activity, disease severity and endoscopic grade. The expression of HIF-1α in colonic mucosa of UC patients was (58.05±13.83) higher than that in UC in remission patients (3.00±2.72) and controls (3.04±2.69) and this difference was statistically significant (P<0.05). A positive correlation was identified between the expression of HIF-1α in colonic mucosa and the disease activity, severity and endoscopic grade. Thus, the present findings indicated that, HIF-1α is likely to play an important role in the pathogenesis of UC and may serve as a biomarker to evaluate disease activity and severity in UC patients.
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Affiliation(s)
- CHUNMEI XU
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - WEIGUO DONG
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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Szulc P. Abdominal aortic calcification: A reappraisal of epidemiological and pathophysiological data. Bone 2016; 84:25-37. [PMID: 26688274 DOI: 10.1016/j.bone.2015.12.004] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 11/30/2015] [Accepted: 12/09/2015] [Indexed: 12/16/2022]
Abstract
In men and women, there is a significant association between the risk of cardiovascular event (myocardial infarction, stroke) and risk of major fragility fracture (hip, vertebra). Abdominal aortic calcification (AAC) can be assessed using semiquantitative scores on spine radiographs and spine scans obtained by DXA. Severe AAC is associated with higher risk of major cardiovascular event. Not only does severe AAC reflect poor cardiovascular health status, but also directly disturbs blood flow in the vascular system. Severe (but not mild or moderate) AAC is associated with lower bone mineral density (BMD), faster bone loss and higher risk of major fragility fracture. The fracture risk remains increased after adjustment for BMD and other potential risk factors. The association between severe AAC and fracture risk was found in both sexes, mainly in the follow-ups of less than 10years. Many factors contribute to initiation and progression of AAC: lifestyle, co-morbidities, inorganic ions, dyslipidemia, hormones, cytokines (e.g. inflammatory cytokines, RANKL), matrix vesicles, microRNAs, structural proteins (e.g. elastin), vitamin K-dependent proteins, and medications (e.g. vitamin K antagonists). Osteogenic transdifferentiation of vascular smooth muscle cells (VSMC) and circulating osteoprogenitors penetrating into vascular wall plays a major role in the AAC initiation and progression. Vitamin K-dependent proteins protect vascular tunica media against formation of calcified deposits (matrix GLA protein, GLA-rich protein) and against VSMC apoptosis (Gas6). Further studies are needed to investigate clinical utility of AAC for the assessment of fracture and cardiovascular risk at the individual level and develop new medications permitting to prevent AAC progression.
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Affiliation(s)
- Pawel Szulc
- INSERM UMR 1033, University of Lyon, Hôpital Edouard Herriot, Lyon, France.
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Dendritic Cells under Hypoxia: How Oxygen Shortage Affects the Linkage between Innate and Adaptive Immunity. J Immunol Res 2016; 2016:5134329. [PMID: 26966693 PMCID: PMC4757696 DOI: 10.1155/2016/5134329] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 01/07/2016] [Accepted: 01/13/2016] [Indexed: 12/12/2022] Open
Abstract
Dendritic cells (DCs) are considered as one of the main regulators of immune responses. They collect antigens, process them, and present typical antigenic structures to lymphocytes, thereby inducing an adaptive immune response. All these processes take place under conditions of oxygen shortage (hypoxia) which is often not considered in experimental settings. This review highlights how deeply hypoxia modulates human as well as mouse immature and mature dendritic cell functions. It tries to link in vitro results to actual in vivo studies and outlines how hypoxia-mediated shaping of dendritic cells affects the activation of (innate) immunity.
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Kim Y, Nam HJ, Lee J, Park DY, Kim C, Yu YS, Kim D, Park SW, Bhin J, Hwang D, Lee H, Koh GY, Baek SH. Methylation-dependent regulation of HIF-1α stability restricts retinal and tumour angiogenesis. Nat Commun 2016; 7:10347. [PMID: 26757928 PMCID: PMC4735525 DOI: 10.1038/ncomms10347] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 12/02/2015] [Indexed: 12/18/2022] Open
Abstract
Hypoxia-inducible factor-1α (HIF-1α) mediates hypoxic responses and regulates gene expression involved in angiogenesis, invasion and metabolism. Among the various HIF-1α posttranslational modifications, HIF-1α methylation and its physiological role have not yet been elucidated. Here we show that HIF-1α is methylated by SET7/9 methyltransferase, and that lysine-specific demethylase 1 reverses its methylation. The functional consequence of HIF-1α methylation is the modulation of HIF-1α stability primarily in the nucleus, independent of its proline hydroxylation, during long-term hypoxic and normoxic conditions. Knock-in mice bearing a methylation-defective Hif1aKA/KA allele exhibit enhanced retinal angiogenesis and tumour vascularization via HIF-1α stabilization. Importantly, S28Y and R30Q mutations of HIF-1α, found in human cancers, are involved in the altered HIF-1α stability. Together, these results demonstrate a role for HIF-1α methylation in regulating protein stability, thereby modulating biological output including retinal and tumour angiogenesis, with therapeutic implications in human cancer. HIF-1α is a pivotal protein involved in angiogenesis and is known to be regulated posttranslationally. Here, the authors show that HIF-1α is methylated by Set7/9 methyltransferase, which reduces protein stability and contributes to reduced angiogenesis.
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Affiliation(s)
- Yunho Kim
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Hye Jin Nam
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Junyeop Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea.,Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, South Korea
| | - Do Young Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
| | - Chan Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea.,Department of Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam 13496, South Korea
| | - Young Suk Yu
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Dongha Kim
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Se Won Park
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Jinhyuk Bhin
- Department of New Biology and Center for Plant Aging Research, Institute for Basic Science, DGIST, Daegu 711-873, South Korea
| | - Daehee Hwang
- Department of New Biology and Center for Plant Aging Research, Institute for Basic Science, DGIST, Daegu 711-873, South Korea
| | - Ho Lee
- Graduate School of Cancer Science and Policy, Research Institute, National Cancer Center, Gyeonggi-do 10408, South Korea
| | - Gou Young Koh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
| | - Sung Hee Baek
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
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Inhibition of Hif1α prevents both trauma-induced and genetic heterotopic ossification. Proc Natl Acad Sci U S A 2015; 113:E338-47. [PMID: 26721400 DOI: 10.1073/pnas.1515397113] [Citation(s) in RCA: 157] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Pathologic extraskeletal bone formation, or heterotopic ossification (HO), occurs following mechanical trauma, burns, orthopedic operations, and in patients with hyperactivating mutations of the type I bone morphogenetic protein receptor ACVR1 (Activin type 1 receptor). Extraskeletal bone forms through an endochondral process with a cartilage intermediary prompting the hypothesis that hypoxic signaling present during cartilage formation drives HO development and that HO precursor cells derive from a mesenchymal lineage as defined by Paired related homeobox 1 (Prx). Here we demonstrate that Hypoxia inducible factor-1α (Hif1α), a key mediator of cellular adaptation to hypoxia, is highly expressed and active in three separate mouse models: trauma-induced, genetic, and a hybrid model of genetic and trauma-induced HO. In each of these models, Hif1α expression coincides with the expression of master transcription factor of cartilage, Sox9 [(sex determining region Y)-box 9]. Pharmacologic inhibition of Hif1α using PX-478 or rapamycin significantly decreased or inhibited extraskeletal bone formation. Importantly, de novo soft-tissue HO was eliminated or significantly diminished in treated mice. Lineage-tracing mice demonstrate that cells forming HO belong to the Prx lineage. Burn/tenotomy performed in lineage-specific Hif1α knockout mice (Prx-Cre/Hif1α(fl:fl)) resulted in substantially decreased HO, and again lack of de novo soft-tissue HO. Genetic loss of Hif1α in mesenchymal cells marked by Prx-cre prevents the formation of the mesenchymal condensations as shown by routine histology and immunostaining for Sox9 and PDGFRα. Pharmacologic inhibition of Hif1α had a similar effect on mesenchymal condensation development. Our findings indicate that Hif1α represents a promising target to prevent and treat pathologic extraskeletal bone.
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