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Yamamoto R, Suzuki S, Homma K, Yamaguchi S, Sujino T, Sasaki J. Hydrogen gas and preservation of intestinal stem cells in mesenteric ischemia and reperfusion. World J Gastrointest Surg 2022; 14:1329-1339. [PMID: 36632117 PMCID: PMC9827576 DOI: 10.4240/wjgs.v14.i12.1329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/11/2022] [Accepted: 11/07/2022] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Patients with mesenteric ischemia frequently suffer from bowel necrosis even after revascularization. Hydrogen gas has showed promising effects for ischemia-reperfusion injury by reducing reactive oxygen species in various animal and clinical studies. We examined intestinal tissue injury by ischemia and reperfusion under continuous initiation of 3% hydrogen gas.
AIM To clarify the treatment effects and target cells of hydrogen gas for mesenteric ischemia.
METHODS Three rat groups underwent 60-min mesenteric artery occlusion (ischemia), 60-min reperfusion following 60-min occlusion (reperfusion), or ischemia-reperfusion with the same duration under continuous 3% hydrogen gas inhalation (hydrogen). The distal ileum was harvested. Immunofluorescence staining with caspase-3 and leucine-rich repeat-containing G-protein-coupled 5 (LGR5), a specific marker of intestinal stem cell, was conducted to evaluate the injury location and cell types protected by hydrogen. mRNA expressions of LGR5, olfactomedin 4 (OLFM4), hairy and enhancer of split 1, Jagged 2, and Neurogenic locus notch homolog protein 1 were measured by quantitative polymerase chain reaction. Tissue oxidative stress was analyzed with immunostaining for 8-hydroxy-2'-deoxyguanosine (8-OHdG). Systemic oxidative stress was evaluated by plasma 8-OHdG.
RESULTS Ischemia damaged the epithelial layer at the tip of the villi, whereas reperfusion induced extensive apoptosis of the cells at the crypt base, which were identified as intestinal stem cells with double immunofluorescence stain. Hydrogen mitigated such apoptosis at the crypt base, and the LGR5 expression of the tissues was higher in the hydrogen group than in the reperfusion group. OLFM4 was also relatively higher in the hydrogen group, whereas other measured RNAs were comparable between the groups. 8-OHdG concentration was high in the reperfusion group, which was reduced by hydrogen, particularly at the crypt base. Serum 8-OHdG concentrations were relatively higher in both reperfusion and hydrogen groups without significance.
CONCLUSION This study demonstrated that hydrogen gas inhalation preserves intestinal stem cells and mitigates oxidative stress caused by mesenteric ischemia and reperfusion.
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Affiliation(s)
- Ryo Yamamoto
- Department of Emergency and Critical Care Medicine, Keio University School of Medicine, Tokyo 1608582, Japan
| | - Sayuri Suzuki
- Department of Emergency and Critical Care Medicine, Keio University School of Medicine, Tokyo 1608582, Japan
| | - Koichiro Homma
- Department of Emergency and Critical Care Medicine, Keio University School of Medicine, Tokyo 1608582, Japan
| | - Shintaro Yamaguchi
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 1608582, Japan
| | - Tomohisa Sujino
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 1608582, Japan
| | - Junichi Sasaki
- Department of Emergency and Critical Care Medicine, Keio University School of Medicine, Tokyo 1608582, Japan
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Lu Y, Li SY, Lou H. Patchouli alcohol protects against myocardial ischaemia-reperfusion injury by regulating the Notch1/Hes1 pathway. PHARMACEUTICAL BIOLOGY 2022; 60:949-957. [PMID: 35588098 PMCID: PMC9122376 DOI: 10.1080/13880209.2022.2064881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 03/14/2022] [Accepted: 03/27/2022] [Indexed: 06/15/2023]
Abstract
CONTEXT Patchouli alcohol (PA) has protective effects on cerebral ischaemia/reperfusion (I/R) injury, but its efficacy on myocardial ischaemia-reperfusion (MI/R) has yet to be addressed. OBJECTIVE To examine the therapeutic effect of PA on myocardial ischaemia-reperfusion (I/R) injury. MATERIALS AND METHODS C57BL/6 male mice were randomly divided into sham, MI/R, MI/R + PA-10, MI/R + PA-20 and MI/R + PA-40 groups. In vivo MI/R model was established by ligating the anterior descending coronary artery of the heart. In vitro stimulated IR cell model was constructed by using the rat cardiomyocyte H9C2 cell line. Mice in the treatment groups were intraperitoneally injected with PA (10, 20, 40 mg/kg) for 30 days then subjected to surgery, and cells in the experimental group were pre-treated with PA (1, 10 or 100 μmol/L). After treatment, mouse heart function, myocardial injury markers, myocardial infarction and Notch1/Hes1 expression, endoplasmic reticulum stress markers, and apoptosis-related proteins were determined. RESULTS In vivo, PA treatment improved hemodynamic parameter changes and myocardial enzymes, increased the left ventricular ejection fraction and left ventricular fractional shortening, reduced the left ventricular end-systolic diameter and inhibited CK-MB, cTnI and cTnT levels. In addition, PA attenuated myocardial tissue damage and apoptosis. PA treatment elevated Notch1, NICD and Hes1 levels and suppressed the levels of ATF4, p-PERK/PERK, and cleaved caspase-3/caspase-3 in vitro and in vivo. DISCUSSION AND CONCLUSION PA protects against MI/R, possibly by modulating ER stress, apoptosis and the Notch1/Hes1 signalling pathways. These findings indicate that PA may be a promising candidate for treating ischaemic heart diseases.
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Affiliation(s)
- Ying Lu
- Electrocardiogram room of Department of Functional Examination, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Shou-ye Li
- College of Pharmacy, Hangzhou Medical College, Hangzhou, China
| | - Hui Lou
- Electrocardiogram room of Department of Functional Examination, Tongde Hospital of Zhejiang Province, Hangzhou, China
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Zhang Y, Yin L, Zeng X, Li J, Yin Y, Wang Q, Li J, Yang H. Dietary High Dose of Iron Aggravates the Intestinal Injury but Promotes Intestinal Regeneration by Regulating Intestinal Stem Cells Activity in Adult Mice With Dextran Sodium Sulfate-Induced Colitis. Front Vet Sci 2022; 9:870303. [PMID: 35782573 PMCID: PMC9240710 DOI: 10.3389/fvets.2022.870303] [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: 02/02/2022] [Accepted: 05/02/2022] [Indexed: 11/18/2022] Open
Abstract
The effects of excessive dietary iron intake on the body have been an important topic. The purpose of this study was to investigate the effects of high-dose iron on intestinal damage and regeneration in dextran sodium sulfate (DSS)-induced colitis model mice. A total of 72 8-week-old adult C57BL/6 mice were randomly divided into two dietary treatment groups: the basal diet supplemented with 45 (control) and 450 mg/kg iron (high-iron) from ferrous sulfate. The mice were fed different diets for 2 weeks, and then 2.5% DSS was orally administered to all mice for 7 days. Samples of different tissues were collected on days 0, 3, and 7 post administration (DPA). High-iron treatment significantly decreased the relative weight of the large intestine at 7 DPA but not at 0 DPA or 3 DPA. High dietary iron increased the jejunal villus width at 0 DPA, decreased the villus width and the crypt depth of the jejunum at 3 DPA, and decreased the number of colonic crypts at 7 DPA. Meanwhile, high dietary iron decreased the number of goblet cells in the jejunal villi and the Paneth cells in the jejunal crypts at 0 DPA, increased the number of goblet cells per crypt of the colon at 3 DPA, and the number of Paneth cells in the jejunal crypts, the goblet cells in the colon, the Ki67-positive proliferating cells in the colon, and the Sex-determining region Y-box transcription factor 9+ (SOX9) cells in the jejunum crypts and colon at 7 DPA. The organoid formation rate was increased by high-iron treatments at 3 DPA and 7 DPA. High dietary iron treatment decreased the mRNA level of jejunal jagged canonical Notch ligand 2 (Jag-2) at 0 DPA and bone morphogenetic protein 4 (Bmp4) and neural precursor cell-expressed developmentally downregulated 8 (Nedd8) in the jejunum and colon at 7 DPA, whereas it increased the mRNA expression of the serum/glucocorticoid-regulated kinase 1 (Sgk1) in the colon at 3 DPA. The results suggested that a high dose of iron aggravated intestinal injury but promoted intestinal repair by regulating intestinal epithelial cell renewal and intestinal stem cell activity in adult mice with colitis.
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Affiliation(s)
- Yitong Zhang
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Lanmei Yin
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Beijing, China
- *Correspondence: Lanmei Yin
| | - Xianglin Zeng
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Jun Li
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China
- State Key Laboratory of Food Safety Technology for Meat Products, Yinxiang Group, Fujian Aonong BiologicaI Science and Technology Group Co., Ltd., Key Laboratory of Swine Nutrition and Feed Science of Fujian Province, Aonong Group, Zhangzhou, China
| | - Yuebang Yin
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Qiye Wang
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Beijing, China
| | - Jianzhong Li
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Huansheng Yang
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- State Key Laboratory of Food Safety Technology for Meat Products, Yinxiang Group, Fujian Aonong BiologicaI Science and Technology Group Co., Ltd., Key Laboratory of Swine Nutrition and Feed Science of Fujian Province, Aonong Group, Zhangzhou, China
- Huansheng Yang
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Sesamin Protects against and Ameliorates Rat Intestinal Ischemia/Reperfusion Injury with Involvement of Activating Nrf2/HO-1/NQO1 Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5147069. [PMID: 34630849 PMCID: PMC8494576 DOI: 10.1155/2021/5147069] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/06/2021] [Accepted: 08/11/2021] [Indexed: 02/06/2023]
Abstract
Intestinal ischemia-reperfusion (I/R) may induce cell/tissue injuries, leading to multiple organ failure. Based on our preexperiments, we proposed that sesamin could protect against and ameliorate intestinal I/R injuries and related disorders with involvement of activating Nrf2 signaling pathway. This proposal was evaluated using SD intestinal I/R injury rats in vivo and hypoxia/reoxygenation- (H/R-) injured rat small intestinal crypt epithelial cell line (IEC-6 cells) in vitro. Sesamin significantly alleviated I/R-induced intestinal histopathological injuries and significantly reduced serum biochemical indicators ALT and AST, alleviating I/R-induced intestinal injury in rats. Sesamin also significantly reversed I/R-increased TNF-α, IL-6, IL-1β, and MPO activity in serum and MDA in tissues and I/R-decreased GSH in tissues and SOD in both tissues and IEC-6 cells, indicating its anti-inflammatory and antioxidative stress effects. Further, sesamin significantly decreased TUNEL-positive cells, downregulated the increased Bax and caspase-3 protein expression, upregulated the decreased protein expression of Bcl-2 in I/R-injured intestinal tissues, and significantly reversed H/R-reduced IEC-6 cell viability as well as reduced the number of apoptotic cells among H/R-injured IEC-6 cell, showing antiapoptotic effects. Activation of Nrf2 is known to ameliorate tissue/cell injuries. Consistent with sesamin-induced ameliorations of both intestinal I/R injuries and H/R injuries, transfection of Nrf2 cDNA significantly upregulated the expression of Nrf2, HO-1, and NQO1, respectively. On the contrary, either Nrf2 inhibitor (ML385) or Nrf2 siRNA transfection significantly decreased the expression of these proteins. Our results suggest that activation of the Nrf2/HO-1/NQO1 signaling pathway is involved in sesamin-induced anti-inflammatory, antioxidative, and antiapoptotic effects in protection against and amelioration of intestinal I/R injuries.
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Ni J, Sun Y, Liu Z. The Potential of Stem Cells and Stem Cell-Derived Exosomes in Treating Cardiovascular Diseases. J Cardiovasc Transl Res 2018. [PMID: 29525884 DOI: 10.1007/s12265-018-9799-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In recent years, the cardiac protective mechanisms of stem cells have become a research focus. Increasing evidence has suggested that stem cells release vesicles, including exosomes and micro-vesicles. The content of these vesicles relies on an extracellular stimulus, and active ingredients are extensively being studied. Previous studies have confirmed that stem cell-derived exosomes have a cardiac protective function similar to that of stem cells, and promote angiogenesis, decrease apoptosis, and respond to stress. Compared to stem cells, exosomes are more stable without aneuploidy and immune rejection, and may be a promising and effective therapy for cardiovascular diseases. In this review, the biological functions and molecular mechanisms of stem cells and stem cell-derived exosomes are discussed.
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Affiliation(s)
- Jing Ni
- Department of Cardiology, Shanghai Tenth People's Hospital, Shanghai, China.,Pan-Vascular Research Institute, Heart, Lung, and Blood Center, Tongji University School of Medicine, Shanghai, China
| | - Yuxi Sun
- Department of Cardiology, Shanghai Tenth People's Hospital, Shanghai, China.,Pan-Vascular Research Institute, Heart, Lung, and Blood Center, Tongji University School of Medicine, Shanghai, China
| | - Zheng Liu
- Department of Cardiology, Shanghai Tenth People's Hospital, Shanghai, China. .,Pan-Vascular Research Institute, Heart, Lung, and Blood Center, Tongji University School of Medicine, Shanghai, China.
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Liu Z, Li L, Chen W, Wang Q, Xiao W, Ma Y, Sheng B, Li X, Sun L, Yu M, Yang H. Aryl hydrocarbon receptor activation maintained the intestinal epithelial barrier function through Notch1 dependent signaling pathway. Int J Mol Med 2017; 41:1560-1572. [PMID: 29286081 PMCID: PMC5819918 DOI: 10.3892/ijmm.2017.3341] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 12/15/2017] [Indexed: 01/12/2023] Open
Abstract
Intestinal ischemia/reperfusion (I/R) induces disruption of the intestinal barrier function. Aryl hydrocarbon receptor (AhR) has a vital role in maintaining the intestinal barrier function. However, the precise mechanism by which AhR maintains intestinal barrier function remains unclear. Notch1 signaling is downstream of AhR, and has also been reported to have a role in the development of tight junctions (TJs) and maintenance of intestinal homeostasis. Therefore, we hypothesized that AhR activation may attenuate the intestinal barrier dysfunction through increased activation of Notch1 signaling. Adult C57BL/6J mice were divided into three groups: Sham, I/R and I/R + 6-formylindolo(3,2-b)carbazole (Ficz) groups. Mice were sacrificed after I/R for 6 h and the intestine was harvested for histological examination, mRNA and protein content analysis, and mucosal permeability investigation. Additionally, a hypoxic Caco‑2 cell culture model was used to evaluate the role of AhR‑Notch1 signaling in the development of TJs and epithelial permeability in vitro. The AhR‑Notch1 signaling components and TJ proteins were assessed by reverse transcription‑quantitative polymerase chain reaction, western blotting, immunohistochemistry or immunofluorescence staining. Epithelial permeability was detected by transepithelium electrical resistance. The data demonstrated that Ficz significantly attenuated the intestinal tissue damage and the disrupted distribution of TJs, increased the expression of TJ proteins, reversed the decrease in TER and upregulated epithelial Notch1 signaling following intestinal I/R in vivo and hypoxia in vitro. Furthermore, inhibition of Notch1 signaling by N‑[N‑(3,5‑difluorophenacetyl)‑L‑alanyl]‑S‑phenylglycine t‑butyl ester (inhibitor of Notch signaling) counteracted the effects of Ficz on the development of TJs in hypoxic Caco‑2 cells. In conclusion, AhR activation ameliorated epithelial barrier dysfunction following intestinal I/R and hypoxia through upregulation of Notch1 signaling, which suggests that AhR may be a potential pharmaceutical agent to combat this condition.
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Affiliation(s)
- Zhongze Liu
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - Liangzi Li
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - Weigang Chen
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - Qimeng Wang
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - Weidong Xiao
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - Yuanhang Ma
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - Baifa Sheng
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - Xiang Li
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - Lihua Sun
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - Min Yu
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - Hua Yang
- Department of General Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
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Landor SKJ, Lendahl U. The interplay between the cellular hypoxic response and Notch signaling. Exp Cell Res 2017; 356:146-151. [PMID: 28456549 DOI: 10.1016/j.yexcr.2017.04.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/25/2017] [Accepted: 04/26/2017] [Indexed: 01/16/2023]
Abstract
The ability to sense and adapt to low oxygen levels (hypoxia) is central for most organisms and cell types. At the center of this process is a molecular mechanism, the cellular hypoxic response, in which the hypoxia inducible factors (HIFs) are stabilized by hypoxia, allowing the HIF proteins to act as master transcriptional regulators to adjust the cell to a low oxygen environment. In recent years, it has become increasingly appreciated that the cellular hypoxic response does not always operate in splendid isolation, but intersects with signaling mechanisms such as Notch signaling, a key regulatory signaling mechanism operating in most cell types controlling stem cell maintenance and differentiation. In this review, which is dedicated to the memory of Lorenz Poellinger,1 we discuss how the intersection between Notch and the cellular hypoxic response was discovered and our current understanding of the molecular basis for the cross-talk. We also provide examples of where Notch and hypoxia intersect in various physiological and disease contexts.
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Affiliation(s)
- Sebastian K-J Landor
- Department of Cell and Molecular Biology, Karolinska Institute, SE-171 77 Stockholm, Sweden; Department of Cell Biology, Åbo Akademi University, FI-20520 Turku, Finland
| | - Urban Lendahl
- Department of Cell and Molecular Biology, Karolinska Institute, SE-171 77 Stockholm, Sweden; Department of Cell Biology, Åbo Akademi University, FI-20520 Turku, Finland.
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Inhibition of miR-363 protects cardiomyocytes against hypoxia-induced apoptosis through regulation of Notch signaling. Biomed Pharmacother 2017; 90:509-516. [PMID: 28402919 DOI: 10.1016/j.biopha.2017.03.080] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 03/24/2017] [Accepted: 03/26/2017] [Indexed: 12/21/2022] Open
Abstract
Cardiomyocyte apoptosis contributes to the pathological process of ischemic heart diseases, such as myocardial infarction. Emerging evidence suggests that microRNAs (miRNAs) play critical roles in the pathological process of myocardial infarction by regulating cardiomyocyte apoptosis. Previous studies have reported that miR-363 is an apoptosis-related miRNA. However, whether miR-363 is involved in regulating cardiomyocyte apoptosis remains unclear. This study aimed to investigate the potential role of miR-363 in the regulation of hypoxia-induced cardiomyocyte apoptosis. We found that miR-363 expression was significantly increased in hypoxic cardiomyocytes and that inhibition of miR-363 effectively protected cardiomyocytes against hypoxia-induced apoptosis. Bioinformatics analysis predicted that Notch1 is a potential target gene of miR-363. This finding was validated by dual-luciferase reporter assay, real-time quantitative polymerase chain reaction, and Western blot analysis. miR-363 inhibition significantly promoted the activation of Notch signaling in hypoxic cardiomyocytes. However, knockdown of Notch1 markedly reversed the protective effects induced by miR-363 inhibition. Furthermore, blocking the Notch signaling also significantly abrogated the protective effects of miR-363 inhibition. Overall, these findings suggest that inhibition of miR-363 protects cardiomyocytes against hypoxia-induced apoptosis through promotion of Notch1 expression and activation of Notch signaling. Our study provides a novel understanding of the molecular basis of hypoxia-induced cardiomyocyte apoptosis and suggests a potential therapeutic target for myocardial infarction.
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Shi F, Dong Z, Li H, Liu X, Liu H, Dong R. MicroRNA-137 protects neurons against ischemia/reperfusion injury through regulation of the Notch signaling pathway. Exp Cell Res 2017; 352:1-8. [DOI: 10.1016/j.yexcr.2017.01.015] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/27/2016] [Accepted: 01/25/2017] [Indexed: 12/19/2022]
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Magalhães LG, Morais ER, Machado CB, Gomes MS, Cabral FJ, Souza JM, Soares CS, Sá RG, Castro-Borges W, Rodrigues V. Uncovering Notch pathway in the parasitic flatworm Schistosoma mansoni. Parasitol Res 2016; 115:3951-61. [PMID: 27344453 DOI: 10.1007/s00436-016-5161-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 06/01/2016] [Indexed: 01/19/2023]
Abstract
Several signaling molecules that govern development in higher animals have been identified in the parasite Schistosoma mansoni, including the transforming growth factor β, protein tyrosine kinases, nuclear hormone receptors, among others. The Notch pathway is a highly conserved signaling mechanism which is involved in a wide variety of developmental processes including embryogenesis and oogenesis in worms and flies. Here we aimed to provide the molecular reconstitution of the Notch pathway in S. mansoni using the available transcriptome and genome databases. Our results also revealed the presence of the transcripts coded for SmNotch, SmSu(H), SmHes, and the gamma-secretase complex (SmNicastrin, SmAph-1, and SmPen-2), throughout all the life stages analyzed. Besides, it was observed that the viability and separation of adult worm pairs were not affected by treatment with N-[N(3,5)-difluorophenacetyl)-L-Alanyl]-S-phenylglycine t-butyl ester (DAPT), a Notch pathway inhibitor. Moreover, DAPT treatment decreased the production of phenotypically normal eggs and arrested their development in culture. Our results also showed a significant decrease in SmHes transcript levels in both adult worms and eggs treated with DAPT. These results provide, for the first time, functional validation of the Notch pathway in S. mansoni and suggest its involvement in parasite oogenesis and embryogenesis. Given the complexity of the Notch pathway, further experiments shall highlight the full repertoire of Notch-mediated cellular processes throughout the S. mansoni life cycle.
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Affiliation(s)
- Lizandra G Magalhães
- Núcleo de Pesquisa em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, Avenida, Dr Armando Salles de Oliveira, 201 Franca, SP, Brazil.
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
| | - Enyara R Morais
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
- Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Patos de Minas, MG, Brazil
| | - Carla B Machado
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Matheus S Gomes
- Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Patos de Minas, MG, Brazil
| | - Fernanda J Cabral
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Julia M Souza
- Núcleo de Pesquisa em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, Avenida, Dr Armando Salles de Oliveira, 201 Franca, SP, Brazil
| | - Cláudia S Soares
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Renata G Sá
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - William Castro-Borges
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Vanderlei Rodrigues
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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11
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Wang G, Yao J, Li Z, Zu G, Feng D, Shan W, Li Y, Hu Y, Zhao Y, Tian X. miR-34a-5p Inhibition Alleviates Intestinal Ischemia/Reperfusion-Induced Reactive Oxygen Species Accumulation and Apoptosis via Activation of SIRT1 Signaling. Antioxid Redox Signal 2016; 24:961-73. [PMID: 26935288 DOI: 10.1089/ars.2015.6492] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
AIMS Reactive oxygen species (ROS) generation and massive epithelial apoptosis are critical in the pathogenesis of intestinal ischemia/reperfusion (I/R) injury. We previously found that the Sirtuin 1 (SIRT1)-mediated antioxidant pathway was impaired in the intestine after I/R. Here, we investigate the potential role of SIRT1-targeting microRNAs (miRNAs) in regulating ROS accumulation and apoptosis in intestinal I/R, and the important role SIRT1 involved in. RESULTS C57BL/6 mice were subjected to intestinal I/R induced by occlusion of the superior mesenteric artery followed by reperfusion. Caco-2 cells were incubated under hypoxia/reoxygenation condition to mimic I/R in vivo. We find that SIRT1 is gradually repressed during the early reperfusion, and that this repression results in intestinal ROS accumulation and apoptosis. Using bioinformatics analysis and real-time PCR, we demonstrate that miR-34a-5p and miR-495-3p are significantly increased among the 41 putative miRNAs that can target SIRT1. Inhibition of miR-34a-5p, but not miR-495-3p, attenuates intestinal I/R injury, as demonstrated by repressing p66shc upregulation, manganese superoxide dismutase repression, and the caspase-3 activation in vitro and in vivo; it further alleviates systemic injury, as demonstrated by reducing inflammatory cytokine release, attenuating lung and liver lesions, and improving survival. Interestingly, SIRT1 plays an indispensable role in the protection afforded by miR-34a-5p inhibition. INNOVATION This study provides the first evidence of miRNAs in regulating oxidative stress and apoptosis in intestinal I/R. CONCLUSION miR-34a-5p knockdown attenuates intestinal I/R injury through promoting SIRT1-mediated suppression of epithelial ROS accumulation and apoptosis. This may represent a novel prophylactic approach to intestinal I/R injury. Antioxid. Redox Signal. 24, 961-973.
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Affiliation(s)
- Guangzhi Wang
- 1 Department of General Surgery, The Second Hospital of Dalian Medical University , Dalian, China
| | - Jihong Yao
- 2 Department of Pharmacology, Dalian Medical University , Dalian, China
| | - Zhenlu Li
- 1 Department of General Surgery, The Second Hospital of Dalian Medical University , Dalian, China
| | - Guo Zu
- 1 Department of General Surgery, The Second Hospital of Dalian Medical University , Dalian, China
| | - Dongcheng Feng
- 1 Department of General Surgery, The Second Hospital of Dalian Medical University , Dalian, China
| | - Wen Shan
- 2 Department of Pharmacology, Dalian Medical University , Dalian, China
| | - Yang Li
- 1 Department of General Surgery, The Second Hospital of Dalian Medical University , Dalian, China
| | - Yan Hu
- 2 Department of Pharmacology, Dalian Medical University , Dalian, China
| | - Yongfu Zhao
- 1 Department of General Surgery, The Second Hospital of Dalian Medical University , Dalian, China
| | - Xiaofeng Tian
- 1 Department of General Surgery, The Second Hospital of Dalian Medical University , Dalian, China
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12
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Liu TE, Wang S, Zhang L, Guo L, Yu Z, Chen C, Zheng J. Growth hormone treatment of premature ovarian failure in a mouse model via stimulation of the Notch-1 signaling pathway. Exp Ther Med 2016; 12:215-221. [PMID: 27347041 PMCID: PMC4906989 DOI: 10.3892/etm.2016.3326] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 03/03/2016] [Indexed: 12/27/2022] Open
Abstract
Premature ovarian failure (POF) is a condition affecting 1% of women in the general population, causing amenorrhea, hypergonadotropism and hypoestrogenism before the age of 40. Currently, POF cannot be reversed and, although treatments are available, there is an urgent need for improved treatment strategies. Growth hormone (GH) is a pleiotropic hormone that affects a broad spectrum of physiological functions, from carbohydrate and lipid metabolism to the immune response. GH has previously been used to treat POF in non-transgenic preclinical trials, but the biochemical mechanism underlying these effects are unclear. In the present study, a mouse model of POF was generated using cyclophosphamide. Treatment of POF mice with recombinant mouse growth hormone (rmGH) was revealed to markedly reduce POF histopathology in ovarian tissue, relieve ovarian granulosa cell injury, reduce the number of atretic follicles and significantly increase the number of mature oocytes. Furthermore, an enzyme-linked immunosorbent assay revealed that plasma estradiol levels increased and plasma follicle stimulating hormone levels decreased with time in a group of mice treated with a medium dose of rmGH (0.8 mg/kg) when compared with the POF model group (P<0.05). In addition, reverse transcription-quantitative polymerase chain reaction and immunohistochemical analysis demonstrated elevated levels of Notch-1 signaling pathway factors (Notch1, CBF1, and HES1) in wild-type mice and those treated with medium and high doses of rmGH, but not in those treated with low doses of rmGH. In conclusion, GH may promote ovarian tissue repair, estrogen release and oocyte maturation via activation of the Notch-1 signaling pathway in ovarian tissue.
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Affiliation(s)
- T E Liu
- Department of Gynecology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China; Shanghai Geriatric Institute of Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
| | - Suwei Wang
- Shanghai Geriatric Institute of Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
| | - Lina Zhang
- Department of Gynecology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
| | - Lihe Guo
- Institute of Biochemistry and Cell Biology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Zhihua Yu
- Shanghai Geriatric Institute of Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
| | - Chuan Chen
- Shanghai Geriatric Institute of Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
| | - Jin Zheng
- Department of Gynecology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
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13
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Huang H, Lai S, Wan Q, Qi W, Liu J. Astragaloside IV protects cardiomyocytes from anoxia/reoxygenation injury by upregulating the expression of Hes1 protein. Can J Physiol Pharmacol 2015; 94:542-53. [PMID: 27070866 DOI: 10.1139/cjpp-2015-0457] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Astragaloside IV (ASI), a traditional Chinese medicine, is a main active ingredient of Astragalus membranaceus. Many clinical studies have found that ASI protects cardiomyocytes in cardiovascular diseases, but the underlying mechanisms remain obscure. The aim of this study was to investigate the molecular mechanisms responsible for the protective effects of ASI in cardiomyocytes from anoxia/reoxygenation (A/R) injury. According to the previous studies, we hypothesized that the cardioprotective effects of ASI against A/R injury might be associated with Notch1/Hes1 signaling pathway. In this study, neonatal rat primary cardiomyocytes were preconditioned with ASI prior to A/R injury. Our results showed that ASI effectively increased the cell viability, decreased the content of MDA, decreased the activities of CPK and LDH, increased the activities of GSH-Px and SOD, and reduced the reactive oxygen species (ROS) generation and the loss of mitochondrial membrane potential (Δψm). ASI inhibited the mitochondrial permeability transition pore (mPTP) opening and activation of caspase-3, and finally decreased the cell apoptosis in cardiomyocytes. Furthermore, ASI upregulated Hes1 protein expression. However, pretreatment with DAPT, a Notch1 inhibitor, effectively attenuated the cardioprotective effects of ASI against A/R injury, except MDA, SOD, GSH-Px, and the ROS generation. Taken together, we demonstrated that ASI could protect against A/R injury via the Notch1/Hes1 signaling pathway.
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Affiliation(s)
- Huang Huang
- a Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, No. 17, Yong Wai Zheng Street, Nanchang, Jiangxi 330006, P.R. China
| | - Songqing Lai
- a Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, No. 17, Yong Wai Zheng Street, Nanchang, Jiangxi 330006, P.R. China
| | - Qing Wan
- b Department of Pharmacy, The First Affiliated Hospital of Nanchang University, No. 17, Yong Wai Zheng Street, Nanchang, Jiangxi 330006, P.R. China
| | - Wanghong Qi
- a Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, No. 17, Yong Wai Zheng Street, Nanchang, Jiangxi 330006, P.R. China
| | - Jichun Liu
- a Department of Cardiac Surgery, The First Affiliated Hospital of Nanchang University, No. 17, Yong Wai Zheng Street, Nanchang, Jiangxi 330006, P.R. China
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14
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Zeng C, Xing R, Liu J, Xing F. Role of CSL-dependent and independent Notch signaling pathways in cell apoptosis. Apoptosis 2015; 21:1-12. [DOI: 10.1007/s10495-015-1188-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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15
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Langness S, Coimbra R, Eliceiri BP, Costantini TW. Vagus Nerve Mediates the Neural Stem Cell Response to Intestinal Injury. J Am Coll Surg 2015. [PMID: 26209457 DOI: 10.1016/j.jamcollsurg.2015.05.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Intestinal ischemia and reperfusion injury results in damage to elements critical to maintaining intestinal barrier function, including neurons and glia cells, which are part of the enteric nervous system (ENS). To limit inflammation, the ENS must be restored or replaced, yet the process by which this occurs is poorly understood. Multipotent progenitor cells called enteric nervous stem cells (ENSC) can differentiate into neurons or glia when stimulated. The ability of this cell population to respond to intestinal injury is unknown. In this study, we hypothesized that resolution of intestinal barrier injury would be associated with vagus nerve-mediated expansion of ENSCs. STUDY DESIGN Ischemia and reperfusion injury was reproduced in male mice by occluding the superior mesenteric artery for 30 minutes. Abdominal vagotomy was performed in a separate cohort to study the effects of the vagus nerve. Terminal ileum was harvested at various time points after reperfusion and analyzed with histology, flow cytometry, and immunohistochemistry. RESULTS Enteric nervous stem cell expansion occurs at 2, 4, and 8 hours after injury compared with sham (4.6% vs 2.1%; p < 0.001) and correlated with increased glial fibrillary acidic protein on immunohistochemistry. Vagotomy prevented both ENSC expansion and increased glial fibrillary acidic protein staining after injury. Intestinal permeability was restored to baseline by 48 hours after injury, but remained elevated in the vagotomy group compared with sham and injury alone at 48 hours (3.25 mg/mL vs 0.57 mg/mL and 0.26 mg/mL, respectively; p < 0.05). CONCLUSIONS Vagal-mediated expansion of ENSCs occurs after ischemia and reperfusion injury and results in improved kinetics of injury resolution.
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Affiliation(s)
- Simone Langness
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego Health Sciences, San Diego, CA
| | - Raul Coimbra
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego Health Sciences, San Diego, CA
| | - Brian P Eliceiri
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego Health Sciences, San Diego, CA
| | - Todd W Costantini
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego Health Sciences, San Diego, CA.
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Coexpression of c-Met and Notch-1 correlates with poor prognosis in resected non-small-cell lung cancer. Tumour Biol 2015; 36:7053-9. [DOI: 10.1007/s13277-015-3404-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 03/26/2015] [Indexed: 10/23/2022] Open
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17
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Chen G, Zhang Z, Cheng Y, Xiao W, Qiu Y, Yu M, Sun L, Wang W, Du G, Gu Y, Peng K, Xu C, Yang H. The canonical Notch signaling was involved in the regulation of intestinal epithelial cells apoptosis after intestinal ischemia/reperfusion injury. Int J Mol Sci 2014; 15:7883-96. [PMID: 24806344 PMCID: PMC4057709 DOI: 10.3390/ijms15057883] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 04/21/2014] [Accepted: 04/24/2014] [Indexed: 11/23/2022] Open
Abstract
Notch signaling plays a critical role in the maintenance of intestinal homeostasis. The aim of the present study was to investigate the role of Notch signaling in the apoptosis of intestinal epithelial cells after intestinal ischemia reperfusion (I/R) injury. Male C57BL/6 mice were subjected to sham operation or I/R injury. Intestinal tissue samples were collected at 12 h after reperfusion. TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling) staining showed that intestinal I/R injury induced significantly increased apoptosis of intestinal epithelial cells. Meanwhile, the mRNA expression of Jagged1, DLL1, Notch2, and Hes5, and protein expression of NICD2 and Hes5 were increased significantly after I/R injury in intestinal epithelial cells. In an in vitro IEC-6 culture model, flow cytometry analyses showed that inhibition of Notch signaling by γ-secretase inhibitor DAPT and the suppression of Hes5 expression using siRNA both significantly increased the apoptosis of IEC-6 cells under the condition of hypoxia/reoxygenation (H/R). In conclusion, the Notch2/Hes5 signaling pathway was activated and involved in the regulation of intestinal epithelial cells apoptosis in intestinal I/R injury.
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Affiliation(s)
- Guoqing Chen
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Zhicao Zhang
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Yingdong Cheng
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Weidong Xiao
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Yuan Qiu
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Min Yu
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Lihua Sun
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Wensheng Wang
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Guangsheng Du
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Yingchao Gu
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Ke Peng
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Chao Xu
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Hua Yang
- Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
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