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Fang J, Guan H. γ-Secretase inhibitor alleviates lipopolysaccharide-induced myocardial injury through regulating JAK2/STAT3 signaling. ENVIRONMENTAL TOXICOLOGY 2024; 39:135-147. [PMID: 37671635 DOI: 10.1002/tox.23962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 07/17/2023] [Accepted: 08/22/2023] [Indexed: 09/07/2023]
Abstract
BACKGROUND Septic myocardial injury is one of the most life-threatening organ dysfunction. The γ-secretase-based approaches have been developed as potential strategies for diverse diseases management. Unfortunately, the role of γ-secretase inhibitor in septic myocardial injury is unclarified. The present study aims to investigate the effect of γ-secretase inhibitor in septic myocardial injury and reveal its mechanism. METHODS The mouse model of septic myocardial injury was established by intraperitoneally injection of lipopolysaccharide (LPS), and γ-secretase inhibitor MW167 was applied in this model. RNA-sequencing analysis and further bioinformatics analyses were used to screen differential expressed genes (DEGs) and potentially enriched pathways between LPS and LPS + MW167 mice. Pathological examination was performed using haematoxylin and eosin (HE) staining. SD-1029 was used to block JAK2/STAT3 signaling in H9C2 cells and western blot analysis quantified JAK2/STAT3-related proteins. RESULTS LPS induced myocardial injury accompanied with significant inflammatory infiltration and more apoptotic cells. Transcriptome sequencing screened 36 DEGs and bioinformatics identified JAK2/STAT3 signaling pathway was significantly enriched. Further in vitro experiments showed that γ-secretase inhibitor MW167 activated JAK2/STAT3 pathway. Additionally, MW167 restored cell viability, decreased myocardial injury markers including cardiac troponin I (cTnI) and brain natriuretic peptide (BNP), inhibited pro-inflammatory cytokines such as interleukin (IL)-1β and tumor necrosis factor-α (TNF-α) and reduced nitric oxide (NO), cyclooxygenase-2 (COX2) and inducible nitric oxide synthase (iNOS) release. Application of SD-1029 reversely deteriorated LPS-induced myocardial injury and inflammatory response in γ-secretase inhibitor-treated myocardial cells. CONCLUSION The results demonstrate that γ-secretase inhibitor alleviates septic myocardial injury via activating JAK2/STAT3 signaling, and provide novel therapeutic direction for septic myocardial injury.
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Affiliation(s)
- Jingyun Fang
- Department of Emergency, Ganzhou People's Hospital, Ganzhou, China
| | - Huan Guan
- Department of Emergency, Ganzhou People's Hospital, Ganzhou, China
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Jackson JT, Nutt SL, McCormack MP. The Haematopoietically-expressed homeobox transcription factor: roles in development, physiology and disease. Front Immunol 2023; 14:1197490. [PMID: 37398663 PMCID: PMC10313424 DOI: 10.3389/fimmu.2023.1197490] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/01/2023] [Indexed: 07/04/2023] Open
Abstract
The Haematopoietically expressed homeobox transcription factor (Hhex) is a transcriptional repressor that is of fundamental importance across species, as evident by its evolutionary conservation spanning fish, amphibians, birds, mice and humans. Indeed, Hhex maintains its vital functions throughout the lifespan of the organism, beginning in the oocyte, through fundamental stages of embryogenesis in the foregut endoderm. The endodermal development driven by Hhex gives rise to endocrine organs such as the pancreas in a process which is likely linked to its role as a risk factor in diabetes and pancreatic disorders. Hhex is also required for the normal development of the bile duct and liver, the latter also importantly being the initial site of haematopoiesis. These haematopoietic origins are governed by Hhex, leading to its crucial later roles in definitive haematopoietic stem cell (HSC) self-renewal, lymphopoiesis and haematological malignancy. Hhex is also necessary for the developing forebrain and thyroid gland, with this reliance on Hhex evident in its role in endocrine disorders later in life including a potential role in Alzheimer's disease. Thus, the roles of Hhex in embryological development throughout evolution appear to be linked to its later roles in a variety of disease processes.
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Affiliation(s)
- Jacob T. Jackson
- Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Stephen L. Nutt
- Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Matthew P. McCormack
- The Australian Centre for Blood Diseases, Monash University, Melbourne, VIC, Australia
- iCamuno Biotherapeutics, Melbourne, VIC, Australia
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Shi P, Nian D, Qu H, Ye M, Wang C, Li L, Li Q. B.infantis enhances immunotherapy for Guillain-Barre syndrome through regulating PD-1. BMC Neurol 2023; 23:48. [PMID: 36709251 PMCID: PMC9883859 DOI: 10.1186/s12883-022-03046-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 12/28/2022] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Guillain-Barré syndrome (GBS) is a rare, autoimmune disease. B.infantis is reported to be effective in alleviating GBS by regulating abnormal function of T helper (Th) cells. OBJECTIVES In this study, T cells were isolated from healthy and GBS patients. The therapeutic effect of Bifidobacterium infantis (B.infantis) and whether it is achieved by PD-1 was examined at cellular and animal models. METHODS We used CCK-8, flow cytometry and real-time PCR to determine the differentiation of T cell subsets at cellular level. Then, an experimental autoimmune neuritis (EAN) animal model using six-week SD rats (n = 30, male) weighing 180-200 g was established to support the role of B. infantis in GBS through PD-1. RESULTS B. infantis inhibited the proliferation and promoted apoptosis of T cells from GBS. At the same time, the expression levels of PD-1 increased, which was correlated with decreased T-bet (Th1) and ROR-γt (Th17) and increased Foxp3 (Treg) expression. Moreover, B. infantis alleviated the symptoms of GBS. Th1 and Th17 cells decreased while Treg cells increased after B. infantis treatment, which could be partly abrogated by PD-1 inhibitor. CONCLUSIONS We concluded from this study that B.infantis alleviated GBS partly through PD-1.
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Affiliation(s)
- Peng Shi
- grid.414884.5Department of Neurology, first Affiliated Hospital of Bengbu Medical College, Bengbu, 233004 Anhui China
| | - Di Nian
- grid.252957.e0000 0001 1484 5512Department of Medical Examination, Bengbu Medical College, Bengbu, 233030 Anhui China
| | - Hongdang Qu
- grid.414884.5Department of Neurology, first Affiliated Hospital of Bengbu Medical College, Bengbu, 233004 Anhui China
| | - Ming Ye
- grid.414884.5Department of Neurology, first Affiliated Hospital of Bengbu Medical College, Bengbu, 233004 Anhui China
| | - Chun Wang
- grid.414884.5Department of Neurology, first Affiliated Hospital of Bengbu Medical College, Bengbu, 233004 Anhui China
| | - Li Li
- grid.414884.5Department of Neurology, first Affiliated Hospital of Bengbu Medical College, Bengbu, 233004 Anhui China
| | - Qian Li
- grid.414884.5Department of Neurology, first Affiliated Hospital of Bengbu Medical College, Bengbu, 233004 Anhui China
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He H, Tan Y, Tang Z, Wang L, Liu S, Wu G. ADAM9: A regulator between HCMV infection and function of smooth muscle cells. J Med Virol 2023; 95:e28352. [PMID: 36437481 DOI: 10.1002/jmv.28352] [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: 07/22/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022]
Abstract
Lots of epidemiological and clinical studies have shown that human cytomegalovirus (HCMV) is related to the pathogenesis of atherosclerosis. Released by inflammatory cells and vascular smooth muscle cell (VSMCs), metalloproteinases are observed in many pathological vessel conditions, including atherosclerosis and restenosis. This study was designed to investigate the effect of HCMV infection on the expression of metalloproteinases and their involvements in the HCMV-induced functional changes of VSMCs. Differential metalloproteinase after HCMV infection was assayed using reverse transcription-polymerase chain reaction (RT-PCR) microarray. The most significant increased a disintegrin and metalloprotease 9 (ADAM9) was chosen to investigate the mechanism of its specific increase after infection using the treatment of UV-irradiated replication-deficient HCMV, HCMV-infected cell lysate filters or Foscarnet. The function of proliferation, migration, production of inflammatoty factors and phenotypic transformation were determined by using cell counting kit-8, transwell, Enzyme-linked immunosorbent assay, RT-quantitative PCR (qPCR) and Western blot, respectively. Moreover, the effect of ADAM9 deficiency on HCMV replication was also determined using RT-qPCR and immunofluorescence. The expression levels of 6 genes were upregulated and 14 genes were downregulated at different time points after HCMV infection. Among these, the expression level of ADAM9 increased most significantly at each time point and the abnormal expression of ADAM9 might be induced by the early gene products of HCMV. Further studies found that ADAM9 promoted the proliferation, the migration, the production of inflammatory factors and the transit from the contractile phenotype (decreased ACTA2 expression) to the synthetic phenotype (increased osteopontin [OPN] expression). Knockdown theADAM9 expression could rescue the decreased ACTA2 expression, but has no effect on OPN expression. ADAM-9 deficiency didn't affect the replication of HCMV. The findings of our study suggest that HCMV infection changed VSMC function through ADAM9 expression, which may contribute to the understanding of the underlying pathological mechanisms of HCMV-induced atherosclerosis.
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Affiliation(s)
- Hanlin He
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yurong Tan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Zhongxiang Tang
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Lili Wang
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Shuiping Liu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Guojun Wu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,School of Basic Medical Sciences, China-Africa Research Centre of Infectious Diseases, Central South University, Changsha, Hunan, China
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Lee S, Affandi J, Waters S, Price P. Human Cytomegalovirus Infection and Cardiovascular Disease: Current Perspectives. Viral Immunol 2023; 36:13-24. [PMID: 36622943 DOI: 10.1089/vim.2022.0139] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Infections with human cytomegalovirus (HCMV) are often asymptomatic in healthy adults but can be severe in people with a compromised immune system. While several studies have demonstrated associations between cardiovascular disease in older adults and HCMV seropositivity, the underlying mechanisms are unclear. We review evidence published within the last 5 years establishing how HCMV can contribute directly and indirectly to the development and progression of atherosclerotic plaques. We also discuss associations between HCMV infection and cardiovascular outcomes in populations with a high or very high burden of HCMV, including patients with renal or autoimmune disease, transplant recipients, and people living with HIV.
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Affiliation(s)
- Silvia Lee
- Department of Microbiology, Pathwest Laboratory Medicine, Perth, Western Australia, Australia.,Department of Advanced Clinical and Translational Cardiovascular Imaging, Harry Perkins Institute of Medical Research, Murdoch, Western Australia, Australia.,Curtin Medical School and the Curtin Health Innovation Research Institute (CHIRI); Bentley, Western Australia, Australia
| | - Jacquita Affandi
- Curtin School of Population Health; Curtin University, Bentley, Western Australia, Australia
| | - Shelley Waters
- Curtin Medical School and the Curtin Health Innovation Research Institute (CHIRI); Bentley, Western Australia, Australia
| | - Patricia Price
- Curtin Medical School and the Curtin Health Innovation Research Institute (CHIRI); Bentley, Western Australia, Australia
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Rearrangement in the Hypervariable Region of JC Polyomavirus Genomes Isolated from Patient Samples and Impact on Transcription Factor-Binding Sites and Disease Outcomes. Int J Mol Sci 2022; 23:ijms23105699. [PMID: 35628509 PMCID: PMC9144386 DOI: 10.3390/ijms23105699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/13/2022] [Accepted: 05/16/2022] [Indexed: 12/20/2022] Open
Abstract
JC polyomavirus (JCPyV) is the causative agent of the fatal, incurable, neurological disease, progressive multifocal leukoencephalopathy (PML). The virus is present in most of the adult population as a persistent, asymptotic infection in the kidneys. During immunosuppression, JCPyV reactivates and invades the central nervous system. A main predictor of disease outcome is determined by mutations within the hypervariable region of the viral genome. In patients with PML, JCPyV undergoes genetic rearrangements in the noncoding control region (NCCR). The outcome of these rearrangements influences transcription factor binding to the NCCR, orchestrating viral gene transcription. This study examines 989 NCCR sequences from patient isolates deposited in GenBank to determine the frequency of mutations based on patient isolation site and disease status. The transcription factor binding sites (TFBS) were also analyzed to understand how these rearrangements could influence viral transcription. It was determined that the number of TFBS was significantly higher in PML samples compared to non-PML samples. Additionally, TFBS that could promote JCPyV infection were more prevalent in samples isolated from the cerebrospinal fluid compared to other locations. Collectively, this research describes the extent of mutations in the NCCR that alter TFBS and how they correlate with disease outcome.
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Liu B, Yang Q, Zhao L, Shui H, Si X. Vitamin D receptor gene polymorphism predicts left ventricular hypertrophy in maintenance hemodialysis. BMC Nephrol 2022; 23:32. [PMID: 35033017 PMCID: PMC8761333 DOI: 10.1186/s12882-021-02640-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/13/2021] [Indexed: 01/04/2023] Open
Abstract
Background To verify that the single nucleotide polymorphisms (SNP) of vitamin D receptor (VDR) may lead to genetic susceptibility to left ventricular hypertrophy (LVH), the present study was designed to study four SNPs of VDR associated with LVH in maintenance hemodialysis (MHD) patients of Han nationality. Methods 120 MHD patients were recruited at Department of Nephrology, Zhongnan Hospital of Wuhan University to analyze the expression of genotype, allele and haplotype of Fok I, Bsm I, Apa I and Taq I in blood samples, and to explore their correlation with blood biochemical indexes and ventricular remodeling. Results The results showed that the risks of CVD included gender, dialysis time, heart rate, SBP, glycated hemoglobin, calcium, iPTH and CRP concentration. Moreover, LAD, LVDd, LVDs, IVST and LVMI in B allele of Bsm I increased significantly. Fok I, Apa I and Taq I polymorphisms have no significant difference between MHD with LVH and without LVH. Further study showed that VDR expression level decreased significantly in MHD patients with LVH, and the B allele was positively correlated with VDR Expression. Conclusion VDR Bsm I gene polymorphism may predict cardiovascular disease risk of MDH patients, and provided theoretical basis for early detection and prevention of cardiovascular complications.
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Affiliation(s)
- Bingman Liu
- Department of Nephrology, Zhongnan Hospital of Wuhan University, No.169 Donghu Road, Wuchang District, Wuhan, 430071, China
| | - Qingqing Yang
- Department of Nephrology, Zhongnan Hospital of Wuhan University, No.169 Donghu Road, Wuchang District, Wuhan, 430071, China
| | - Liangyu Zhao
- Department of Nephrology, Zhongnan Hospital of Wuhan University, No.169 Donghu Road, Wuchang District, Wuhan, 430071, China
| | - Hua Shui
- Department of Nephrology, Zhongnan Hospital of Wuhan University, No.169 Donghu Road, Wuchang District, Wuhan, 430071, China
| | - Xiaoyun Si
- Department of Nephrology, Zhongnan Hospital of Wuhan University, No.169 Donghu Road, Wuchang District, Wuhan, 430071, China.
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Dai P, Tang Z, Qi M, Liu D, Bajinka O, Tan Y. Dispersion and utilization of lipid droplets mediates respiratory syncytial virus-induced airway hyperresponsiveness. Pediatr Allergy Immunol 2022; 33:e13651. [PMID: 34383332 DOI: 10.1111/pai.13651] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/30/2021] [Accepted: 08/05/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Respiratory viral infections (RSV) can induce acute asthma attacks, thereby destroying lung function and accelerating the progression of the disease. However, medications in the stable phase of asthma are often not effective for acute attacks induced by viral infections. We aimed to clarify the possible mechanism of viral infection-induced asthma through fatty acid metabolism. METHODS AND RESULTS The airway resistances, inflammatory injuries, and oxidative stress in the RSV-induced animal models were significantly higher than those in the control group at acute phase (7 days) and chronic phase (28 days). Moreover, the concentrations of the medium- and long-chain fatty acids in lung tissue at (28 days) were significantly increased, including 14:0 (myristic acid), 16:0 (palmitic acid, PA), 18:1 (oleic acid, OA), and 18:2 (linoleic acid, LA) using non-targeted metabonomics. Airway epithelial cells treated with RSV showed the reduced expression of FSP27, RAB8A, and PLIN5, which caused the fusion and growth of lipid droplet (LD), and increased expression of the LD dispersion gene perilipin 2. There was also a decrease in PPARγ expression and an increase in the fatty acid catabolism gene PPARα, causing lipid oxidation, free fatty acid releases, and an upsurge in IL-1, IL-2, IL-4, and IL-6 expression, which could be abrogated by GPR40 inhibitor. Treated mice or epithelial cells with C18 fatty acid exhibited inhibition of epithelial proliferation, increases of inflammation, and oxidative damage. CONCLUSIONS RSV promoted lipid dispersion and utilization, causing enlarged oxidative injuries and an upsurge in the pro-inflammatory cytokines, leading to the progression of airway hyperresponsiveness (AHR).
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Affiliation(s)
- Pei Dai
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China.,China-Africa Research Centre of Infectious Diseases, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Zhongxiang Tang
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Mingming Qi
- Department of Obstetrics, Zhuzhou Hospital Affiliated to Xiangya School of Medicine, Central South University, Hunan, China
| | - Dan Liu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Ousman Bajinka
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China.,China-Africa Research Centre of Infectious Diseases, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Yurong Tan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China.,China-Africa Research Centre of Infectious Diseases, School of Basic Medical Sciences, Central South University, Changsha, China
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Qiu X, Bajinka O, Wang L, Wu G, Tan Y. High-fat diet promotes epithelial-mesenchymal transition through enlarged growth of opportunistic pathogens and the intervention of saturated hydrogen. Am J Transl Res 2021; 13:6016-6030. [PMID: 34306341 PMCID: PMC8290812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 02/25/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVES This study investigated the effects and mechanism of high-fat diet on the epithelial-mesenchymal transition (EMT) of respiratory tract and the intervention of saturated hydrogen on it. METHODS 80 five-week-old C57BL6/J male mice were randomly divided into normal control group, H2 group, high-fat (HF) group and HF+H2 group, making 20 mice in each group. The weights of the mice were measured on weekly basis. Six mice from each group were executed at every second week. Blood samples were collected for lipid testing. Lung tissues were collected for 16S rRNA gene sequencing, HE staining, immunofluorescence and quantitative real-time PCR (qPCR). RESULTS Compared with the control group, the mice in the HF group showed increased inflammatory cell infiltration, decreased expression of e-cadherin (E-cad) and increased expression of Twist. There were significant differences in the composition of bacteria in the lung, and the expression of isocitrate lyase (ICL) genes in Pseudomonas aeruginosa, Staphylococcus aureus and Acinetobacter baumannii, which were significantly associated with asthma were seen with a significant increasing trend. After the treatment of saturated hydrogen, the changes in lung microbial population, lung tissue infiltration of inflammatory cells and the transformation of epithelial stroma caused by high-fat diet were moderately alleviated. CONCLUSION High-fat diet can promote inflammation and EMT in the lung by enlarging the growth of glyoxylic acid cycle-dependent bacteria, and the pathological process are partly alleviated by saturated hydrogen.
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Affiliation(s)
- Xiangjie Qiu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South UniversityChangsha, China
| | - Ousman Bajinka
- Department of Medical Microbiology, Xiangya School of Medicine, Central South UniversityChangsha, China
| | - Lili Wang
- Department of Medical Microbiology, Xiangya School of Medicine, Central South UniversityChangsha, China
| | - Guojun Wu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South UniversityChangsha, China
| | - Yurong Tan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South UniversityChangsha, China
- China-Africa Research Center of Infectious Diseases, School of Basic Medical Sciences, Central South UniversityChangsha 410078, Hunan, China
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microRNA-217 suppressed epithelial-to-mesenchymal transition through targeting PTPN14 in gastric cancer. Biosci Rep 2021; 40:221385. [PMID: 31793993 PMCID: PMC6946620 DOI: 10.1042/bsr20193176] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/15/2019] [Accepted: 11/26/2019] [Indexed: 11/17/2022] Open
Abstract
Background: Gastric cancer (GC) is the one of most common malignancies and its mechanism of metastasis remains unclear. The study was designed to investigate the effects of microRNA-217 on epithelial-to-mesenchymal transition. Methods: The expression levels of miR-217 in GC were assayed by real-time qPCR. Metastasis and invasion of cancer cell were assayed by transwell chamber. Double luciferase reporter gene was used to verify the target regulatory relationship between microRNA-217 and tyrosine–protein phosphatase non-receptor type 14 (PTPN14) on gastric cell lines. Epithelial-to-mesenchymal transition (EMT) markers were assayed by Western blot. Results: We found that miR-217 had a low level expression in gastric tumor tissues of 40 patients with GC, and a lower expression in the gastric tumor tissues of the patients with GC metastasis. Moreover, miR-217 markedly suppressed the metastasis and invasion of gastric cancer cell line in vitro. Furthermore, miR-217 inhibited the expression of PTPN14 by directly targeting its 3′UTR. Moreover, the down-regulation of PTPN14 reduced the metastasis and invasion, whereas up-regulation of PTPN14 led to the enhanced metastases and invasion of gastric cells. miR-217 induced the down-regulation of PTPN14 and inhibited the EMT in gastric cancer cells. Conclusion: miR-217 inhibited the EMT through directly targeting to the 3′UTR of PTPN14.
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Qiu X, Wu G, Wang L, Tan Y, Song Z. Lactobacillus delbrueckii alleviates depression-like behavior through inhibiting toll-like receptor 4 (TLR4) signaling in mice. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:366. [PMID: 33842587 PMCID: PMC8033381 DOI: 10.21037/atm-20-4411] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background The intestinal flora can influence behavior through the microbiota-gut-brain axis and is closely related to the occurrence and development of nervous system diseases such as depression. Probiotics like Lactobacillus may regulate the balance of the intestinal flora and play an active role in preventing and treating depression. Methods Eight-week-old C57BL/6J mice (n=32) were randomly and equally divided into a normal control group, a control + Lac group, a model group, and a model + Lac group. The model and model + Lac groups were intraperitoneally injected with 1.2 mg/kg lipopolysaccharide for 7 days, and the behavior of the mice was assessed 24 hours later. The normal and model groups received intragastric administration of saline daily, while the control + Lac and model + Lac groups were given 109 cfu Lac intragastrically daily for 7 days. The inhibitory effect of Lac and its fermentation products on depression-related bacteria were examined in vitro. Results Lac effectively inhibited the production of depression-like behaviors in mice. The expression levels of zonula occludens-1 (ZO-1) and E-cadherin in the small intestine in the model group were significantly decreased, but Lac abrogated this effect. Overactivation of microglia and decreased expression of dopamine transporter (DAT) in brain tissues, which are closely related to depression, were also abrogated by Lac treatment. Furthermore, the expression of toll-like receptor 4 (TLR4) and nod-like receptor protein-3 (NLRP3), as well as the level of interleukin-1 beta (IL-1β) in the intestine and brain, were all significantly increased; however, these effects were subsequently abrogated by Lac. Moreover, Lac inhibited dysbiosis through its metabolites. Conclusions Lac has a remarkable antidepressant function, which it performs through the inhibition of dysbiosis (via its metabolites) and pattern recognition receptor TLR4 signaling.
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Affiliation(s)
- Xiangjie Qiu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Guojun Wu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Lili Wang
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Yurong Tan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Zhi Song
- Department of General Surgery, The Third Xiangya Hospital, Central South University, Changsha, China
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12
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Zhan S, Ni B. hsa-miR-9-5p Down-Regulates HK2 and Confers Radiosensitivity to Nasopharyngeal Carcinoma. Technol Cancer Res Treat 2021; 20:1533033821997822. [PMID: 33627057 PMCID: PMC7919207 DOI: 10.1177/1533033821997822] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 01/18/2021] [Accepted: 01/29/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND This study was designed to explore the effects of hsa-miR-9-5p on radiotherapy sensitivity of nasopharyngeal carcinoma (NPC) by targeting hexokinase 2 (HK2). METHODS The levels of hsa-miR-9-5 and HK2 in NPC patients and radiosensitive and resistant cells were determined using qRT-PCR. The dual luciferase reporter gene system was used to determine hsa-miR-9-5p targeting HK2. The level of HK2 expression in NPC were determined using qRT-PCR and western blotting after the administration of hsa-miR-9-5p agomir. The effects of hsa-miR-9-5p on proliferation and apoptosis with or without irradiation (IR) were examined using CCK-8, flow cytometry and colony formation assays. (18F)-Flourodeoxyglucose uptake was used to evaluate the growth of tumor with or without radiation therapy in vivo. RESULTS hsa-miR-9-5p target to inhibit HK2. Moreover, the cell proliferation was seen in a decreased trend while the cell apoptosis increased in the hsa-miR-9-5p group following radiation therapy hsa-miR-9-5p also showed a significant inhibitory effect on the growth of tumor in vivo with radiation therapy. CONCLUSIONS hsa-miR-9-5p improved the radiosensitivity of NPC by targeting HK2.
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Affiliation(s)
- Shanqiang Zhan
- Department of E.N.T and Head and Neck Surgery, Jiujiang NO.1
People’s Hospital, Jiangxi, China
| | - Baoliang Ni
- Department of E.N.T and Head and Neck Surgery, Jiujiang NO.1
People’s Hospital, Jiangxi, China
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Spinal cord injury can be relieved by the polysaccharides of Tricholoma matsutake by promoting axon regeneration and reducing neuroinflammation. Neuroreport 2020; 31:1024-1029. [PMID: 32833882 PMCID: PMC7467154 DOI: 10.1097/wnr.0000000000001514] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
With an increase in the number of spinal cord injuries (SCIs) in China, severe dysfunction of the limb below the injured segment is prominent. Among the studies centered on the factors inducing SCIs, inflammatory response has a dramatic input on the pathogenesis of SCIs.
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Li M, Huang H, Cheng F, Hu X, Liu J. miR-141-3p promotes proliferation and metastasis of nasopharyngeal carcinoma by targeting NME1. Adv Med Sci 2020; 65:252-258. [PMID: 32299022 DOI: 10.1016/j.advms.2020.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/19/2019] [Accepted: 03/29/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE This study aimed to investigate the expression and biological function of miR-141-3p in nasopharyngeal carcinoma (NPC) via targeting neoplasm metastasis 1 (NME1). MATERIALS AND METHODS The expression of miR-141-3p and NME1 in 5-8F, C666-1, CNE-1, CNE-2, 6-10B and NP69 nasopharyngeal epithelial cells were detected using real-time Polymerase Chain Reaction (real-time PCR) and western blot, respectively. Cell proliferation was detected using Cell Counting Kit-8 (CCK-8), and the metastasis was detected using Transwell. The binding of miR-141-3p to NME1 was detected by dual luciferase reporter gene detection system. The effects of miR-141-3p on tumor growth were also determined in vivo. RESULTS The results showed that the expression of miR-141-3p significantly increased in various tumor cell lines and the expression of NME1 was higher in NP69 cells and lower in 5-8F cells, which had significant negative correlation. Furthermore, the expression of NME1 was significantly reduced after transfection of miR-141-3p and miR-141-3p promoted cell proliferation and metastasis. The double luciferase reporter gene detection system confirmed that NME1 was the target gene of miR-141-3p. Knockout of NME1 promoted the proliferation and metastasis of NP69 or 6-10B cells and the activation of p-Akt, which were abrogated by miR-141-3p. In vivo, the tumor volumes and weights in the miR-141-3p group significantly increased followed by down-regulation of NME1 and activation of p-Akt. CONCLUSIONS We confirmed that miR-141-3p promotes the proliferation and metastasis of NPC by targeting NME1.
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15
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Zhang W, Chai W, Zhu Z, Li X. Aldehyde oxidase 1 promoted the occurrence and development of colorectal cancer by up-regulation of expression of CD133. Int Immunopharmacol 2020; 85:106618. [PMID: 32470878 DOI: 10.1016/j.intimp.2020.106618] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 05/11/2020] [Accepted: 05/17/2020] [Indexed: 12/24/2022]
Abstract
Aldehyde oxidase 1 (AOX1) is involved in the detoxification of a variety of aldehydes and nitrogenous heterocyclic compounds. Some reports showed that downregulation of AOX1 was associated with cancers. To probe the mechanism of AOX1 in the development of colorectal cancer, AOX1 expression in clinic specimens and various colorectal cell lines were determined. The results showed that AOX1 expression was downregulated in the cancer genome atlas data, clinic samples and various colorectal cell lines. Moreover, high expression of AOX1 promoted proliferation and invasion and inhibited apoptosis via reactive oxygen species (ROS) production. The histone biomarkers in the promoter of CD133 and regulation proteins were also analyzed using Chip assay and Western blot, which showed that AOX1 promoted the transcription and translation of CD133. In AOX1-/-APCmin/+ mice, the expression levels of CD133, p-PI3K and p-Akt protein in cancer tissues was significantly decreased and the survival rates were greatly increased. In conclusion, we found that AOX1 showed significantly positive correlation with CD133 in vitro and in vivo, indicating that AOX1 could be a potential candidate target for colorectal treatment.
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Affiliation(s)
- Wenlei Zhang
- Department of Interventional Therapy, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Wei Chai
- Department of Gynecology and Obstetrics, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Zifeng Zhu
- Department of Interventional Therapy, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Xingliang Li
- Department of Emergency Medicine, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China.
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Zhu W, Liu S. The role of human cytomegalovirus in atherosclerosis: a systematic review. Acta Biochim Biophys Sin (Shanghai) 2020; 52:339-353. [PMID: 32253424 DOI: 10.1093/abbs/gmaa005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/05/2019] [Accepted: 01/20/2020] [Indexed: 12/11/2022] Open
Abstract
Atherosclerosis is a progressive vascular disease with increasing morbidity and mortality year by year in modern society. Human cytomegalovirus (HCMV) infection is closely associated with the development of atherosclerosis. HCMV infection may accelerate graft atherosclerosis and the development of transplant vasculopathy in organ transplantation. However, our current understanding of HCMV-associated atherosclerosis remains limited and is mainly based on clinical observations. The underlying mechanism of the involvement of HCMV infection in atherogenesis remains unclear. Here, we summarized current knowledge regarding the multiple influences of HCMV on a diverse range of infected cells, including vascular endothelial cells, vascular smooth muscle cells, monocytes, macrophages, and T cells. In addition, we described potential HCMV-induced molecular mechanisms, such as oxidative stress, endoplasmic reticulum stress, autophagy, lipid metabolism, and miRNA regulation, which are involved in the development of HCMV-associated atherogenesis. Gaining an improved understanding of these mechanisms will facilitate the development of novel and effective therapeutic strategies for the treatment of HCMV-related cardiovascular disease.
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Affiliation(s)
- Wenbo Zhu
- Clinical Research Institute, First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Shuangquan Liu
- Clinical Laboratory, First Affiliated Hospital, University of South China, Hengyang 421001, China
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Zhao Z, Tang Z, Zhang W, Liu J, Li B, Ding S. Inactivated pseudomonas aeruginosa protects against myocardial ischemia reperfusion injury via Nrf2 and HO-1. Exp Ther Med 2020; 19:3362-3368. [PMID: 32266034 DOI: 10.3892/etm.2020.8605] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 06/27/2019] [Indexed: 12/22/2022] Open
Abstract
The current study investigated the protective effects of inactivated pseudomonas aeruginosa (IPA) on myocardial ischemia reperfusion injury (MIR/I) and the mechanisms governing this interaction. Left anterior descending coronary artery ligation was performed on rats for 30 min and reperfusion was performed for a subsequent 2 h. Rat hearts were obtained and the myocardial infarction area was determined using nitroblue tetrazolium. Myocardial cell apoptosis was determined using flow cytometry. Malondialdehyde (MDA) content, lactate dehydrogenase (LDH) activity, superoxide dismutase (SOD) activity and catalase (CAT) activities were assayed using the corresponding kits. Additionally, nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase 1 (HO-1) were assayed using western blot and immunofluorescence analysis. When compared with the model group, the results of IPA treatment revealed improved heart function, reduced myocardial infarction area and reduced endothelial cell apoptosis, which led to decreased LDH and MDA levels, and increased SOD and CAT levels in serum, and decreased LDH and MDA levels and increased SOD and CAT in myocardial tissues. Moreover, increased Nrf2 and HO-1 expression levels in the myocardial tissues were also observed at all concentrations of IPA. It was concluded that IPA pretreatment ameliorated MIR/I and reduced endothelial apoptosis and oxidative stress via the Nrf2/HO-1 pathway.
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Affiliation(s)
- Zhigang Zhao
- Emergency Department, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430000, P.R. China
| | - Zhongzhi Tang
- Emergency Department, General Hospital of Central Theater Command, Wuhan, Hubei 430070, P.R. China
| | - Wenkai Zhang
- Emergency Department, General Hospital of Central Theater Command, Wuhan, Hubei 430070, P.R. China
| | - Jie Liu
- Emergency Department, General Hospital of Central Theater Command, Wuhan, Hubei 430070, P.R. China
| | - Bo Li
- Emergency Department, General Hospital of Central Theater Command, Wuhan, Hubei 430070, P.R. China
| | - Shifang Ding
- Cardiovascular Department, General Hospital of Central Theater Command, Wuhan, Hubei 430070, P.R. China
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Xiu D, Cheng M, Zhang W, Ma X, Liu L. Pseudomonas aeruginosa-mannose-sensitive hemagglutinin inhibits chemical-induced skin cancer through suppressing hedgehog signaling. Exp Biol Med (Maywood) 2020; 245:213-220. [PMID: 31903775 DOI: 10.1177/1535370219897240] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Pseudomonas aeruginosa-mannose-sensitive hemagglutinin (PAM) is an inactivate P. aeruginosa with mannose-sensitive hemagglutinin. Recently, the anticancer properties of PAM against many cancers have been reported across a range of studies. However, the exact mechanism through which PAM prevents skin cancer remains unclear. The aim of this study is to show to what extent PAM could inhibit the dimethylbenzanthracene (DMBA)/12-O-tetradecanoylphorbol-13-acetate (TPA)-induced skin cancer. JB6 cells were treated by TPA so as to establish an in vitro model. The effects of PAM on proliferation of the cells were analyzed using cell counting kit-8 assays. Effects on epithelial–mesenchymal transition (EMT) were assayed by real-time PCR and Western blotting. A DMBA/TPA-induced skin cancer mouse model was also established. The results showed that TPA promoted EMT changes through the activation of the hedgehog (Hh) pathway, which was reversed by PAM. Moreover, PAM inhibited the cancer growth and Hh pathway in vivo. These data indicate that PAM may serve as a potential anticancer agent for the treatment of skin cancer. Impact statement Pseudomonas aeruginosa-mannose-sensitive hemagglutinin (PAM) restrained the chemical-induced skin cancer cells in vitro and in vivo partly through suppressing the Hh signaling pathway, indicating that PAM may be a promising anticancer agent for treating skin cancer.
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Affiliation(s)
- Dianhui Xiu
- Department of Radiology, China-Japan Union Hospital, Jilin University, Changchun 130033, China
| | - Min Cheng
- Department of Radiology, China-Japan Union Hospital, Jilin University, Changchun 130033, China
| | - Wenlei Zhang
- Department of Interventional Therapy, First Hospital of Jilin University, Changchun 13021, China
| | - Xibo Ma
- Department of Otorhinolaryngology, Jilin Province People's Hospital, Changchun 130000, China
| | - Lin Liu
- Department of Radiology, China-Japan Union Hospital, Jilin University, Changchun 130033, China
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Zhou J, Zhang S, Chen Z, He Z, Xu Y, Li Z. CircRNA-ENO1 promoted glycolysis and tumor progression in lung adenocarcinoma through upregulating its host gene ENO1. Cell Death Dis 2019; 10:885. [PMID: 31767835 PMCID: PMC6877563 DOI: 10.1038/s41419-019-2127-7] [Citation(s) in RCA: 161] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 09/12/2019] [Accepted: 10/04/2019] [Indexed: 01/16/2023]
Abstract
Lung adenocarcinoma (LUAD) has long been one of the predominant reasons for the global cancer-linked mortality. The tumor progression is shown by several studies to be promoted by increased glycolysis. Enolase 1 (ENO1), as a glycolysis enzyme, performs pivotal role in glucose metabolism and contributes to tumor progression of numerous cancers. Circular RNAs (circRNAs) are catching increasing attentions for their surging roles in regulating gene expression in cancers. Our work is to uncover the regulatory mechanism circ-ENO1 on its host gene ENO1 and its function in glycolysis and tumor progression. Circ-ENO1 and its host gene ENO1 were identified to be upregulated in LUAD cells. Functionally, silencing circ-ENO1 retarded glycolysis, inhibited proliferation, migration and EMT, induced apoptosis. The cytoplasmic localization of circ-ENO1 was determined by FISH and subcellular fractionation. Mechanistically, circ-ENO1 acted as a ceRNA to interact with miR-22-3p and upregulate ENO1 expression. In vivo experiments certified that circ-ENO1 drove tumor growth and metastasis in vivo. In summary, current study elucidated that circ-ENO1 promoted glycolysis and tumor progression in LUAD by miR-22-3p/ENO1 axis, indicating circ-ENO1 as a promising treatment target for LUAD patients.
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Affiliation(s)
- Jiayu Zhou
- Department of Thoracic Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou City, 310000, Zhejiang Province, China
| | - Shizhen Zhang
- Institute of translational Medicine, Zhejiang University, Hangzhou City, 310000, Zhejiang province, China
| | - Zhoumiao Chen
- Department of Thoracic Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou City, 310000, Zhejiang Province, China.
| | - Zhengfu He
- Department of Thoracic Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou City, 310000, Zhejiang Province, China
| | - Yong Xu
- Department of Thoracic Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou City, 310000, Zhejiang Province, China
| | - Zhijun Li
- Department of Thoracic Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou City, 310000, Zhejiang Province, China
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Chen J, Jiang Q, Jiang XQ, Li DQ, Jiang XC, Wu XB, Cao YL. miR-146a promoted breast cancer proliferation and invasion by regulating NM23-H1. J Biochem 2019; 167:41-48. [PMID: 31598678 DOI: 10.1093/jb/mvz079] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 09/12/2019] [Indexed: 01/05/2023] Open
Abstract
Abstract
The study aimed to investigate the regulatory effect of miR-146a in proliferation, invasion and migration of breast cancer and its possible mechanism via NM23-H1. The expression levels of miR-146a in breast cancer with different pathological classification were significantly increased, while the expression levels of NM23-H1 were significantly decreased, which were closely correlated. Double luciferase reporter gene was used to verify the target regulatory relationship between miR-146 and NM23-H1 on a human breast cancer cell line. miR-146a was closely related to the proliferation and metastasis of breast cancer. miR-146a also promoted the growth of breast cancer in vivo via targeting NM23-H1. In conclusion, miR-146 can promote the proliferation and invasion of breast cancer by targeting NM23-H1.
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Affiliation(s)
- Jun Chen
- Breast Tumor Department, 3rd Hospital of Nanchang, No. 2 Xiangshan South Road, Xihu District, Nanchang, Jiangxi, China
| | - Qiang Jiang
- Oncology Department, Jiangxi Provincial Chest Hospital, No. 346, Dieshan Road, East Lake District, Nanchang, Jiangxi, China
| | - Xue-Qin Jiang
- Breast Tumor Department, 3rd Hospital of Nanchang, No. 2 Xiangshan South Road, Xihu District, Nanchang, Jiangxi, China
| | - De-Quan Li
- Breast Tumor Department, 3rd Hospital of Nanchang, No. 2 Xiangshan South Road, Xihu District, Nanchang, Jiangxi, China
| | - Xiao-Cheng Jiang
- Breast Tumor Department, 3rd Hospital of Nanchang, No. 2 Xiangshan South Road, Xihu District, Nanchang, Jiangxi, China
| | - Xiao-Bo Wu
- Breast Tumor Department, 3rd Hospital of Nanchang, No. 2 Xiangshan South Road, Xihu District, Nanchang, Jiangxi, China
| | - Ya-Li Cao
- Breast Tumor Department, 3rd Hospital of Nanchang, No. 2 Xiangshan South Road, Xihu District, Nanchang, Jiangxi, China
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Yi W, OuYang Q. Adiponectin improves diabetic nephropathy by inhibiting necrotic apoptosis. Arch Med Sci 2019; 15:1321-1328. [PMID: 31572480 PMCID: PMC6764294 DOI: 10.5114/aoms.2018.79570] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 10/17/2018] [Indexed: 01/02/2023] Open
Abstract
INTRODUCTION This study aimed to investigate the effect of adiponectin (Apn) on necrotic apoptosis (Nec) in vitro and in vivo to clarify the possible role of Apn in the pathogenesis of diabetic nephropathy (DN). MATERIAL AND METHODS Rat glomerular endothelial (RGE) cells were treated with high glucose (HG, 30 mmol/l) for 24 h and the effects of Apn on cell viability, RIP1 and RIP3 expression and p-p38MAPK activation were assayed by CCK-8, immunofluorescence and western blot. Then a streptozotocin (STZ)-induced DN rat model was established. The body weight, left kidney weight, left kidney weight/body weight (KW/BW), creatinine clearance rate (Ccr), 24 h urine protein and blood glucose were recorded. The expression of RIP1, RIP3 and p-p38MAPK in renal tissues was examined by immunohistochemistry and western blot. RESULTS Treatment of RGE cells with HG induced significant cytotoxicity and increased expression levels of RIP1, RIP3 and p-p38MAPK, which were abrogated by Apn in a concentration-dependent manner. In vivo, compared with the control group, the Ccr, 24 h urine protein and the blood glucose level of the rats in the model group were significantly increased, effects which were abrogated by Apn intervention. Moreover, the expression levels of RIP1, PIP3 and p-p38MAPK were also significantly increased in the model group, effects which were canceled by Apn intervention. CONCLUSIONS Apn can alleviate the inflammatory response and damage of DN by inhibiting Nec via p-p38MAPK signaling.
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Affiliation(s)
- Wei Yi
- Department of Nephrology, The Fourth Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Qian OuYang
- Department of Critical Care Medicine, Jiangxi Provincial Tumor Hospital, Nanchang, Jiangxi, China
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Yan XT, Cheng XL, He XH, Zheng WZ, Xiao-Fang Y, Hu C. The HO-1-expressing bone mesenchymal stem cells protects intestine from ischemia and reperfusion injury. BMC Gastroenterol 2019; 19:124. [PMID: 31299915 PMCID: PMC6626374 DOI: 10.1186/s12876-019-1042-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 06/30/2019] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Bone mesenchymal stromal cells (BMSC) showed protective potential against intestinal ischemia. Oxygenase-1(HO-1) could alleviate oxidative stress. In the present study, we constructed HO-1-expressing BMSC and detected the effects of it on survival, intestinal injury and inflammation following intestinal ischemia and reperfusion injury (I/R). METHODS In this experiment, eighty adult male mice were divided into Sham, I/R, I/R + BMSC, I/R + BMSC/HO-1 groups. Mice were anesthetized and intestinal I/R model were established by temporarily occluding the superior mesenteric artery for 60 min with a non-crushing clamp. Following ischemia, the clamp was removed and the intestines were allowed for reperfusion. Prior to abdominal closure, BMSC/ HO-1 (2 × 106 cells) or BMSC (2 × 106 cells) were injected into the peritoneum of I/R mice respectively. Mice were allowed to recover for 24 h and then survival rate, intestinal injury and inflammation were determined. Reactive oxygen species (ROS) was assayed by fluorescent probe. TNFα and IL-6 were assayed by ELISA. RESULTS BMSC/HO-1 increased seven day survival rate, improved intestinal injury and down-regulated inflammation after intestinal I/R when compared with sole BMSC (p < 0.05 respectively). Multiple pro-inflammatory media were also decreased following application of BMSC/HO-1, when compared with sole BMSC (p < 0.05) respectively, suggesting that BMSC /HO-1 had a better protection to intestinal I/R than BMSC therapy. CONCLUSION Administration of BMSC/HO-1 following intestinal I/R, significantly improved intestinal I/R by limiting intestinal damage and inflammation.
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Affiliation(s)
- Xue-Tao Yan
- Department of Anesthesiology, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518102, China.
| | - Xiao-Li Cheng
- Department of Anesthesiology, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518102, China
| | - Xiang-Hu He
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
| | - Wen-Zhong Zheng
- Department of Anesthesiology, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518102, China
| | - Yuan Xiao-Fang
- Department of Anesthesiology, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518102, China
| | - Chen Hu
- Department of Anesthesiology, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518102, China
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Zhou W, Wu Y, Pan M, Liu D, Liu B. Proliferation and Migration of Lung Cancer Could be Inhibited by Oxymatrine through the Regulation for miR-520/VEGF. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2019; 47:865-878. [PMID: 31091971 DOI: 10.1142/s0192415x19500459] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Recent evidence suggests that Oxymatrine (OMT) has excellent effects in anticancer. The mechanism, however, remains unclear. In the present study, we investigated the potential mechanism of OMT against cancer. The differential expression of miRNA was screened by miRNA array. The expression of miRNA-520 and VEGF in lung cancer was assayed by real-time PCR, Western blot and immunohistochemistry, respectively. The direct interaction between miRNA-520 and VEGF was assayed by luciferase activity assay and their roles in lung cancer proliferation, invasion and migration were analyzed in vivo and in vitro. We found that miR-520 was markedly down-regulated and VEGF was markedly up-regulated in lung cancer tissues compared with adjacent normal tissues, which had significant negative correlation. Dual-luciferase assays confirmed that miR-520 directly targeting VEGF by binding to its upstream promoter region. Through in vitro and in vivo experiments, we found that different doses of OMT could up-regulate miR-520, selectively inhibit VEGF and thus inhibit the proliferation and migration of lung cancer. Our findings indicate that OMT inhibited cancer progression and metastasis by upregulation of miR-520 and downregulation of VEGF, which provide new support for OMT may be as a novel anticancer drug for the treatment of lung cancer in the future.
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Affiliation(s)
- Wen Zhou
- * Department of Chinese Medicine, Medical College, Shantou University, 22 Xinling Road, Shantou 515041, P. R. China.,† Department of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, 55 Neihuanxi Road, Guangzhou 510006, P. R. China
| | - Yunshan Wu
- ‡ Department of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou 510006, P. R. China
| | - Miao Pan
- * Department of Chinese Medicine, Medical College, Shantou University, 22 Xinling Road, Shantou 515041, P. R. China
| | - Daojun Liu
- * Department of Chinese Medicine, Medical College, Shantou University, 22 Xinling Road, Shantou 515041, P. R. China
| | - Bo Liu
- † Department of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, 55 Neihuanxi Road, Guangzhou 510006, P. R. China
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Qin L, Qiu KZ, Hu CP, Wu GJ, Wang LL, Tan YR. Bronchial Epithelial Cells Promote the Differentiation of Th2 Lymphocytes in Airway Microenvironment through Jagged/Notch-1 Signaling after RSV Infection. Int Arch Allergy Immunol 2019; 179:43-52. [PMID: 30943513 DOI: 10.1159/000495581] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 11/16/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The aim of this study was to investigate the role of Notch-1 signaling through Notch-1 ligands on bronchial epithelial cells (BECs) in regulating the development of T helper 2 (Th2) lymphocytes after RSV infection. METHODS Firstly, we analyzed the expression of cytokines and Notch-1 ligands in BECs by using real-time PCR. Then, RSV-infected BECs were co-cultured with CD4+ T cells in a transwell chamber for 48 h, and differentiation of T cells in the lower chamber was determined using flow cytometry and real-time PCR. JAG1 siRNA was then used to determine the effects of Jagged/Notch-1 signaling on the differentiation of Th2. An RSV-infected mouse model was also used to analyze the secretion of Th differentiation-associated cytokines in serum and lung tissues using ELISA, the histopathological changes using HE staining, and the expression of JAG1 and JAG2 in BECs. RESULTS The results showed that RSV promoted the expression of Th2-type cytokines and Jagged-1 and inhibited the expression of Jagged-2 in normal BECs. RSV-infected BECs induced Th2 differentiation. In addition, JAG1 downregulation inhibited the differentiation of Th2 and promoted differentiation of Th1. In the RSV-infected mouse model, the RSV titer, inflammation decreased with time. IL-4 and IL-17 increased on day 28 and 60, while IFNγ increased on day 7 and 28. Moreover, the expression of Jagged-1 increased and that of Jagged-2 decreased in BECs, which was consistent with IL-4 production in lung tissues. CONCLUSION Our data showed that BECs had the potential to promote the differentiation of Th2 lymphocytes through Jagged-1/Notch-1 signaling.
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Affiliation(s)
- Ling Qin
- Respiratory Department, Xiangya Hospital, Central South University, Changsha, China
| | - Ke-Zi Qiu
- Department of Basic Medicine, Xiangya School of Medicine, Central South University, Changsha, China
| | - Cheng-Ping Hu
- Respiratory Department, Xiangya Hospital, Central South University, Changsha, China
| | - Guo-Jun Wu
- Department of Basic Medicine, Xiangya School of Medicine, Central South University, Changsha, China
| | - Li-Li Wang
- Department of Basic Medicine, Xiangya School of Medicine, Central South University, Changsha, China
| | - Yu-Rong Tan
- Respiratory Department, Xiangya Hospital, Central South University, Changsha, China, .,Department of Basic Medicine, Xiangya School of Medicine, Central South University, Changsha, China,
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Nian D, Shi P, Sun J, Ren L, Hao X, Han J. Application of luteinizing hormone-releasing hormone-ferrosoferric oxide nanoparticles in targeted imaging of breast tumors. J Int Med Res 2019; 47:1749-1757. [PMID: 30880516 PMCID: PMC6460613 DOI: 10.1177/0300060519834457] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background Ferrosoferric oxide (Fe3O4) nanoparticles are a commonly used magnetic resonance imaging (MRI) reagent. Luteinizing hormone-releasing hormone (LHRH) is highly expressed on the surfaces of tumors, but its expression is low or absent in the corresponding normal tissues, allowing it to be used for targeted imaging and treatment. Methods We prepared Fe3O4 nanoparticles using a chemical co-precipitation method, performed coupling with chitosan to prepare LHRH-Fe3O4 nanoparticles, and explored the application value of LHRH-Fe3O4 nanoparticles in targeted imaging and treatment of breast tumors through in vitro and in vivo experiments. Results The particle size of the LHRH-Fe3O4 nanoparticles was 10 nm, and they could be taken in by human MCF-7 breast cancer cells. The nanomaterial had low cytotoxicity. In vivo MRI experiments showed that LHRH-Fe3O4 could effectively concentrate on the tumor under the action of a magnetic field. It also had a good negative enhancement effect that significantly reduced the signal intensity of the T2 field, allowing it to be used as a contrast agent of the T2 field. Conclusion LHRH-Fe3O4 nanoparticles serve the purpose of targeting contrast agents to target sites and are expected to be used for targeted imaging and treatment of cancers with high LHRH expression.
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Affiliation(s)
- Di Nian
- 1 Department of Medical Laboratory, Bengbu Medical College, Bengbu, China
| | - Peng Shi
- 2 Department of Neurology, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Junjie Sun
- 1 Department of Medical Laboratory, Bengbu Medical College, Bengbu, China
| | - Li Ren
- 1 Department of Medical Laboratory, Bengbu Medical College, Bengbu, China
| | - Xiaona Hao
- 1 Department of Medical Laboratory, Bengbu Medical College, Bengbu, China
| | - Junwei Han
- 1 Department of Medical Laboratory, Bengbu Medical College, Bengbu, China
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Caixia L, Yang X, Yurong T, Xiaoqun Q. Involvement of epigenetic modification in epithelial immune responses during respiratory syncytial virus infection. Microb Pathog 2019; 130:186-189. [PMID: 30890452 DOI: 10.1016/j.micpath.2019.03.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 03/14/2019] [Accepted: 03/14/2019] [Indexed: 01/25/2023]
Abstract
The epithelial cells of bronchi (BECs) act as a protective wall against potential pathogens and foreign particles that controls many aspects of respiratory immune response. The BECs act as not only a physical protecting wall of the airways but also as a significant part of both the innate and adaptive immune responses. Many kind of epithelium-associated communicating pathways which are triggered by genetic and environmental causating agents get involved in development of respiratory tract abnormalities. Epigenetic dysregulation is one potential mechanism which may mediate between adverse in early life exposures such as severe infections and immunological function deficits in later life. Epigenetic factors which regulate the respiratory tract lining structure and role are also an attractive area to assess the susceptibility of respiratory tract diseases. Several studies show that the key genes in epithelium-related signaling pathways have epigenetic modifications. The interactions mediating the relationship between severe bronchiolitis caused by RSV and their adverse consequences in childhood are broadly understood as immunological in nature, however, are yet to be fully uncovered. Thus, our study explained the immune action of epithelium and RSV-triggered immune imbalance of epithelium through epigenetic modifications in the mechanism of airway hyperresponsiveness.
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Affiliation(s)
- Liu Caixia
- From Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
| | - Xiang Yang
- From Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
| | - Tan Yurong
- From Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China; From Department of Basic Medicine, Xiangya School of Medicine, Central South University, Changsha, 410078, Hunan, China.
| | - Qin Xiaoqun
- From Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
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Zhang D, Wang H, Yu W, Qiao F, Su X, Xu H. Downregulation of hexokinase 2 improves radiosensitivity of breast cancer. Transl Cancer Res 2019; 8:290-297. [PMID: 35116758 PMCID: PMC8798562 DOI: 10.21037/tcr.2019.01.37] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 01/15/2019] [Indexed: 11/14/2022]
Abstract
Background Hexokinase 2 (HK2) is a major glycolytic enzyme that plays a critical role in the development of tumor metabolism. Triple negative breast cancers (TNBC) have high glycolytic activity and poor prognosis. This study explored the effect of HK2 on radiotherapy (RT) sensitivity of TNBC. Methods The knockdown of HK2 genes in TNBC by lentiviral shRNA was confirmed by quantitative real-time polymerase chain reaction (qRT-PCR) and western blotting. In addition, the boosts of radiation therapy effects of TNBC accompanied by a reduction of HK2 gene were determined by CCK-8, flow cytometry and colonic formation assays. (18F)-fluorodeoxyglucose (18F-FDG) uptake was used to evaluate tumor growth before and after radiation therapy in vivo. Results After administration of lentiviral shHK2, the expressions of HK2 proteins and mRNA were inhibited effectively. Following exposure to different doses of X-rays, the survival rate of cells and colony formation displayed a decreased trend and the cell apoptosis rate increased in the Lv-shHK2 group (P<0.05). In addition, (18F)-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) imaging showed that compared with control, the maximum standardized uptake value (SUVmax) was lower in the Lv-shHK2 group. Conclusions Downregulation of HK2 improved the radiosensitivity of breast cancer (BC).
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Affiliation(s)
- Dan Zhang
- Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Hui Wang
- Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Wenjing Yu
- Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Feng Qiao
- Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Xiaoyu Su
- Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Huiqin Xu
- Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
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Shanshan H, Lan X, Xia L, Huang W, Meifang Z, Ling Y. Inhibition of protease-activated receptor-2 induces apoptosis in cervical cancer by inhibiting signal transducer and activator of transcription-3 signaling. J Int Med Res 2019; 47:1330-1338. [PMID: 30700181 PMCID: PMC6421370 DOI: 10.1177/0300060518820440] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Objective The present study explored how the inhibition of protease-activated
receptor-2 (PAR-2) induced proliferation and apoptosis in
cervical cancer in vitro and in
vivo. Methods mRNA and protein expression of PAR2 and signal transducer and
activator of transcription-3 (STAT-3) was determined by
quantitative real-time PCR and western blotting. The
proliferation and apoptosis of cervical cancer cells were
assayed by the cell counting kit-8 kit, flow cytometry, and
western blotting. The effects of PAR2 inhibition on cervical
cancer were also examined in BALB/c nude mice in
vivo. Results SLIGRL-NH2 (SL), a selective PAR-2 agonist, promoted proliferation
and inhibited apoptosis of healthy cervical cancer cells and
HeLa cells, while the PAR-2 antagonist FSLLRY-NH2 (FS) inhibited
proliferation and led to apoptosis. SL also promoted the
activation of STAT-3, while FS inhibited it and inhibited cancer
growth in vivo. Conclusion FS inhibited cervical cancer by reducing proliferation and inducing
apoptosis by interfering with STAT-3 signaling.
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Affiliation(s)
- Hu Shanshan
- Department of Gynecology, Wuhan University of Science and Technology Hospital, Wuhan City, Hubei, China
| | - Xiao Lan
- Department of Gynecology, Wuhan University of Science and Technology Hospital, Wuhan City, Hubei, China
| | - Li Xia
- Department of Gynecology, Wuhan University of Science and Technology Hospital, Wuhan City, Hubei, China
| | - Wang Huang
- Department of Gynecology, Wuhan University of Science and Technology Hospital, Wuhan City, Hubei, China
| | - Zuo Meifang
- Department of Gynecology, Wuhan University of Science and Technology Hospital, Wuhan City, Hubei, China
| | - Yin Ling
- Department of Gynecology, Wuhan University of Science and Technology Hospital, Wuhan City, Hubei, China
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Hydrogen Sulfide Protects against Chemical Hypoxia-Induced Injury via Attenuation of ROS-Mediated Ca 2+ Overload and Mitochondrial Dysfunction in Human Bronchial Epithelial Cells. BIOMED RESEARCH INTERNATIONAL 2018; 2018:2070971. [PMID: 30363932 PMCID: PMC6186369 DOI: 10.1155/2018/2070971] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 09/01/2018] [Accepted: 09/10/2018] [Indexed: 11/20/2022]
Abstract
Oxidative stress induced by hypoxia/ischemia resulted in the excessive reactive oxygen species (ROS) and the relative inadequate antioxidants. As the initial barrier to environmental pollutants and allergic stimuli, airway epithelial cell is vulnerable to oxidative stress. In recent years, the antioxidant effect of hydrogen sulfide (H2S) has attracted much attention. Therefore, in this study, we explored the impact of H2S on CoCl2-induced cell injury in 16HBE14o- cells. The effect of CoCl2 on the cell viability was detected by Cell Counting Kit (CCK-8) and the level of ROS in 16HBE14o- cells in response to varying doses (100–1000 μmol/L) of CoCl2 (a common chemical mimic of hypoxia) was measured by using fluorescent probe DCFH-DA. It was shown that, in 16HBE14o- cells, CoCl2 acutely increased the ROS content in a dose-dependent manner, and the increased ROS was inhibited by the NaHS (as a donor of H2S). Moreover, the calcium ion fluorescence probe Fura-2/AM and fluorescence dye Rh123 were used to investigate the intracellular calcium concentration ([Ca2+]i) and mitochondria membrane potential (MMP) in 16HBE14o- cells, respectively. In addition, we examined apoptosis of 16HBE14o- cells with Hoechst 33342. The results showed that the CoCl2 effectively elevated the Ca2+ influx, declined the MMP, and aggravated apoptosis, which were abrogated by NaHS. These results demonstrate that H2S could attenuate CoCl2-induced hypoxia injury via reducing ROS to perform an agonistic role for the Ca2+ influx and MMP dissipation.
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Qing Y, Dong X, Hongli L, Yanhui L. Berberine promoted myocardial protection of postoperative patients through regulating myocardial autophagy. Biomed Pharmacother 2018; 105:1050-1053. [PMID: 30021340 DOI: 10.1016/j.biopha.2018.06.088] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 06/14/2018] [Accepted: 06/14/2018] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Berberine has been verified to protect the heart from ischemia/reperfusion injury through animal experiments. However, the cardioprotective properties of berberine have not been established fully. This study was aimed at investigating whether berberine is cardioprotective in vivo and in vitro. METHODS In the cardiomyoblast cells, the autophagosomes were observed by immunostaining. The apoptosis was detected by a flow cytometry. Beclin-1, LC3-II/I, adenosine monophosphate-activated protein kinase (AMPK), and mTOR in cardiomyocytes were detected by Western blot. Next, one hundred patients, who were undergoing percutaneous coronary intervention (PCI), were randomly assigned to the berberine group (n = 52) or control group (n = 48). Berberine was administered on them postoperatively. Their plasma was then analyzed for CRP, TNF-α and IL-6. RESULTS In the cardiomyoblast cells, berberine reduced the autophagy and apoptosis induced by NaH2PO4. At the same time, berberine increased the activation of p-AMPK and inhibited the activation of p-mTOR induced by NaH2PO4. in vivo, berberine significantly reduced the levels of CRP, TNF-α and IL-6 in the patients' plasma. CONCLUSION It was concluded that berberine therapy reduced myocardial injury partly by reducing myocardial autophagy and apoptosis through the AMPK/mTOR pathway.
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Affiliation(s)
- Yao Qing
- Heart Center, Xuanwu Hospital, Capital Medical University, No. 45, Changchun Street, Xicheng District, Beijing, 100053, China.
| | - Xu Dong
- Heart Center, Xuanwu Hospital, Capital Medical University, No. 45, Changchun Street, Xicheng District, Beijing, 100053, China
| | - Li Hongli
- Heart Center, Xuanwu Hospital, Capital Medical University, No. 45, Changchun Street, Xicheng District, Beijing, 100053, China
| | - Liu Yanhui
- Heart Center, Xuanwu Hospital, Capital Medical University, No. 45, Changchun Street, Xicheng District, Beijing, 100053, China
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31
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Shi P, Qu H, Nian D, Chen Y, Liu X, Li Q, Li Q, Wang C, Ye M, Ma B. Treatment of Guillain-Barré syndrome with Bifidobacterium infantis through regulation of T helper cells subsets. Int Immunopharmacol 2018; 61:290-296. [PMID: 29908492 DOI: 10.1016/j.intimp.2018.06.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/19/2018] [Accepted: 06/06/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND Guillain-Barré syndrome (GBS) is a rare, autoimmune-mediated disease. The use of Bifidobacterium is reportedly effective in alleviating GBS since they act by regulating T helper (Th) cells. OBJECTIVES In this study, we explored the differentiation of T helper cell subsets in patients with GBS. We also evaluated the effect of GBS on Bifidobacterium levels in patients and the likely protective influence of this bacterium in alleviating the disease in an animal model. MATERIALS AND METHODS We used flow cytometry, and real-time polymerase chain reaction (PCR) to determine the T cell subsets differentiation among 30 GBS patients and 20 healthy controls (HC). The concentration of Bifidobacterium was assayed by real-time PCR. Experimental autoimmune neuritis (EAN) animal model was established to support the protective role of Bifidobacterium in GBS. RESULTS The expression of Th cells, Th2 and Th17 in the patients was significantly higher than that in the HC, while Treg cells decreased substantially. Moreover, the levels of Bifidobacterium in the GBS patients were considerably lower than those in the HC, the concentration of Bifidobacterium correlating with Th2 and Th17 subsets negatively. Treatment with Bifidobacterium significantly reduced the levels of Th2 and Th17 and promoted the levels of Treg cells. CONCLUSIONS We concluded from this study that Bifidobacterium alleviated GBS by regulating Th cells, although in-depth studies might be required to fully understand the mechanism of action.
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Affiliation(s)
- Peng Shi
- Department of Neurology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Hongdang Qu
- Department of Neurology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China.
| | - Di Nian
- Department of Medical Examination, Bengbu Medical College, Bengbu 233030, China
| | - Yuhua Chen
- Department of Neurology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Xiaolin Liu
- Department of Neurology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Qiang Li
- Department of Neurology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Qianqian Li
- Department of Neurology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Chun Wang
- Department of Neurology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Ming Ye
- Department of Neurology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Bo Ma
- Department of Neurology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
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32
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Wanchao S, Chen M, Zhiguo S, Futang X, Mengmeng S. Protective effect and mechanism of Lactobacillus on cerebral ischemia reperfusion injury in rats. ACTA ACUST UNITED AC 2018; 51:e7172. [PMID: 29791585 PMCID: PMC5972019 DOI: 10.1590/1414-431x20187172] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 03/12/2018] [Indexed: 01/14/2023]
Abstract
The present study was designed to investigate the protective effects and
mechanism of inactivated lactobacillus (ILA) on cerebral ischemia reperfusion
injury (CIRI) in rats. In this experiment, 30 male Sprague Dawley rats were
randomly divided into control group, IRI groups, and ILA group. A middle
cerebral artery occlusion and reperfusion model was prepared. The rats were
killed after 24 hours of recovery of blood flow of cerebral ischemia resulting
from 60-min occlusion. The cerebral infarction volume and neurological scores
were assayed by staining and behavioral observation. Malondialdehyde (MDA) and
superoxide dismutase (SOD) levels were assayed by biochemical kits. Cell
apoptosis was assayed by Tunnel and the Toll-like receptor (TLR)-4, IkB, and A20
were assayed by western blot. The neurobehavioral scores in IRI rats were
significantly lower compared to the control group while ILA improved the
neurobehavioral scores of the ILA groups. The cerebral infarction volume and
neural cell apoptosis of rats in the ILA groups decreased significantly compared
with those in the IRI group. In addition, MDA level in the ILA groups decreased
whereas SOD activity increased compared to the IRI group. Moreover, ILA also
inhibited the expression of TLR-4 and promoted the expression of IkB and A20.
ILA inhibited the apoptosis of neural cells, decreased cerebral infarction
volume, and reduced oxidative stress through inhibition of TLR-4/NF-kappa B
signaling, improving neurobehavioral scores. Thus from the present study it was
concluded that ILA has protective effect on CIRI.
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Affiliation(s)
- Shi Wanchao
- Cerebrovascular Disease Treatment Center, No.5 Tianjin Center Hospital, Tianjin, China
| | - Ma Chen
- Cerebrovascular Disease Treatment Center, No.5 Tianjin Center Hospital, Tianjin, China
| | - Su Zhiguo
- Cerebrovascular Disease Treatment Center, No.5 Tianjin Center Hospital, Tianjin, China
| | - Xie Futang
- Cerebrovascular Disease Treatment Center, No.5 Tianjin Center Hospital, Tianjin, China
| | - Shi Mengmeng
- Cerebrovascular Disease Treatment Center, No.5 Tianjin Center Hospital, Tianjin, China
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Huafeng J, Deqing Z, Yong D, Yulian Z, Ailing H. A cross-talk between integrin β4 and epidermal growth factor receptor induces gefitinib chemoresistance to gastric cancer. Cancer Cell Int 2018; 18:50. [PMID: 29618949 PMCID: PMC5879569 DOI: 10.1186/s12935-018-0548-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 03/23/2018] [Indexed: 02/01/2023] Open
Abstract
Background Gastric cancer presents a major health burden worldwide. Therefore, many molecular targeting agents have been evaluated for treatment of gastric cancer. Gefitinib has shown anticancer activity against gastric cancer which work through inhibiting epidermal growth factor receptor (EGFR). However, the effect of gefitinib is limited due to its resistance. Therefore, understanding the mechanisms of gefitinib resistance is desperately needed to formulate novel strategies against gastric cancer. Here, we analyzed resistance mechanism from the crosstalk between EGFR and integrin β4. Methods Integrin β4-expression vector or siRNA were used to analyze the functional effects of integrin β4 on chemoresistance of gastric cancer cells to gefitinib. EGFR and integrin β4 expression, proliferation and apoptosis of gastric cancer cells were assayed by indirect immunofluorescence, western blot, MTT and flow cytometry respectively. EGFR and integrin β4 expression were also assayed on patient samples. Results It was found that the integrin β4 expression was increased in gefitinib-resistant gastric cell line. The upregulated integrin β4 expression was identified to promote gefitinib resistance and proliferation, and inhibit apoptosis, while downregulation of integrin β4 was to inhibit gefitinib resistance and proliferation, and induce apoptosis. Moreover, the overexpression of integrin β4 in SGC7901 cells resulted in the down-regulation of p-EGFR protein levels while down-regulation of integrin β4, significantly resulted in overexpression of p-EGFR. The results of western blot from patients also showed there was obvious negative correlation between p-EGFR and integrin β4 in gastric cancer patients. Conclusion Considering the above results, it is concluded that the interaction of EGFR and integrin β4 may change the sensitivity of gefitinib treatment.
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Affiliation(s)
- Jia Huafeng
- Department of Gastroenterology, Hongze District People's Hospital, Huai'an, 223100 Jiangsu China
| | - Zhang Deqing
- 2Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu China
| | - Ding Yong
- Department of General Surgery, Hongze District People's Hospital, Huai'an, 223100 Jiangsu China
| | - Zhang Yulian
- Department of Gastroenterology, Hongze District People's Hospital, Huai'an, 223100 Jiangsu China
| | - Hu Ailing
- Department of Oncology, Hongze District People's Hospital, 102 Dongfeng Road, Hongze District, Huai'an, 223100 Jiangsu China
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Guo N, Zhang N, Yan L, Cao X, Lv F, Wang J, Wang Y, Cong H. Down-regulation of single-stranded DNA-binding protein 1 expression induced by HCMV infection promotes lipid accumulation in cells. ACTA ACUST UNITED AC 2017; 50:e6389. [PMID: 28902926 PMCID: PMC5597284 DOI: 10.1590/1414-431x20176389] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 06/22/2017] [Indexed: 01/07/2023]
Abstract
The objective of this study was to observe the infection of human cytomegalovirus (HCMV) to human umbilical vein endothelial cells, and its effect on the expression of single-stranded DNA-binding protein (SSBP1) and on lipid metabolism in endothelial cells. We screened the differential expression of mRNAs after HCMV infection by suppression subtractive hybridization and the expression levels of SSBP1 mRNA and protein after HCMV infection by real-time PCR and western blot. After verification of successful infection by indirect immunofluorescent staining and RT-PCR, we found a differential expression of lipid metabolism-related genes including LDLR, SCARB, CETP, HMGCR, ApoB and LPL induced by HCMV infection. The expression levels of SSBP1 mRNA and protein after HCMV infection were significantly down-regulated. Furthermore, we found that upregulation of SSBP1 inhibited the expression of atherosclerosis-associated LDLR, SCARB, HMGCR, CETP as well as the accumulation of lipids in the cells. The results showed that the inhibition of SSBP1 by HCMV infection promotes lipid accumulation in the cells.
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Affiliation(s)
- N Guo
- Department of Cardiology, Tianjin Chest Hospital, Tianjin Medical University, Tianjin, China.,Department of Cardiology, Cangzhou Central Hospital, Hebei Medical University, Cangzhou, China
| | - N Zhang
- Department of Cardiology, Cangzhou Central Hospital, Hebei Medical University, Cangzhou, China
| | - L Yan
- Department of Cardiology, Cangzhou Central Hospital, Hebei Medical University, Cangzhou, China
| | - X Cao
- Department of Cardiology, Cangzhou Central Hospital, Hebei Medical University, Cangzhou, China
| | - F Lv
- Department of Cardiology, Cangzhou Central Hospital, Hebei Medical University, Cangzhou, China
| | - J Wang
- Department of Cardiology, Cangzhou Central Hospital, Hebei Medical University, Cangzhou, China
| | - Y Wang
- Department of Cardiology, Cangzhou Central Hospital, Hebei Medical University, Cangzhou, China
| | - H Cong
- Department of Cardiology, Tianjin Chest Hospital, Tianjin Medical University, Tianjin, China
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