Experimental Animals最新文献

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Effects of taxifolin on aspirin-induced gastric damage in rats: macroscopic and biochemical evaluation. 杉木素对阿司匹林致大鼠胃损伤的影响:宏观及生化评价。
IF 2.4 4区 农林科学
Experimental Animals Pub Date : 2023-11-09 Epub Date: 2023-06-19 DOI: 10.1538/expanim.22-0065
Serkan Cerrah, Nergis Akbas, Fatih Ozcicek, Renad Mammadov, Durdu Altuner, Halis Suleyman, Seval Bulut
{"title":"Effects of taxifolin on aspirin-induced gastric damage in rats: macroscopic and biochemical evaluation.","authors":"Serkan Cerrah, Nergis Akbas, Fatih Ozcicek, Renad Mammadov, Durdu Altuner, Halis Suleyman, Seval Bulut","doi":"10.1538/expanim.22-0065","DOIUrl":"10.1538/expanim.22-0065","url":null,"abstract":"<p><p>Taxifolin (dihydroquercetin) is a flavanonol isolated from various plants and has antioxidant effects. The aim of our study was to macroscopically and biochemically investigate the effects of taxifolin on aspirin-induced oxidative gastric damage in rats and to evaluate them by comparison with those of famotidine. Rats were divided into four drug administration groups: a healthy control group, an aspirin-only group (ASG), a taxifolin + aspirin group (TASG), and a famotidine + aspirin group (FASG). The results revealed that in light of the results that we obtained, 50 mg/kg taxifolin had anti-ulcer effects. At this dose, taxifolin was able to bring COX-1 activities to a level close to those seen in healthy rats with appropriate macroscopic, oxidant/antioxidant, and biochemical parameters. Based on these results, it can be said that taxifolin may be successfully used as a more potent alternative to famotidine, which is the currently accepted treatment for aspirin-induced ulcers.</p>","PeriodicalId":12102,"journal":{"name":"Experimental Animals","volume":" ","pages":"513-519"},"PeriodicalIF":2.4,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10658090/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10013632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An efficient evaluation system for factors affecting the genome editing efficiency in mouse. 影响小鼠基因组编辑效率因素的高效评价体系。
IF 2.4 4区 农林科学
Experimental Animals Pub Date : 2023-11-09 Epub Date: 2023-07-04 DOI: 10.1538/expanim.23-0045
Yusuke Sakai, Yuri Okabe, Gen Itai, Seiji Shiozawa
{"title":"An efficient evaluation system for factors affecting the genome editing efficiency in mouse.","authors":"Yusuke Sakai, Yuri Okabe, Gen Itai, Seiji Shiozawa","doi":"10.1538/expanim.23-0045","DOIUrl":"10.1538/expanim.23-0045","url":null,"abstract":"<p><p>Genome editing technology is widely used in the field of laboratory animal science for the production of genetic disease models and the analysis of gene function. One of the major technical problems in genome editing is the low efficiency of precise knock-in by homologous recombination compared to simple knockout via non-homologous end joining. Many studies have focused on this issue, and various solutions have been proposed; however, they have yet to be fully resolved. In this study, we established a system that can easily determine the genotype at the mouse (Mus musculus) Tyr gene locus for genome editing both in vitro and in vivo. In this genome editing system, by designing the Cas9 cleavage site and donor template, wild-type, knockout, and knock-in genotypes can be distinguished by restriction fragment length polymorphisms of PCR products. Moreover, the introduction of the H420R mutation in tyrosinase allows the determination of knock-in mice with specific coat color patterns. Using this system, we evaluated the effects of small-molecule compounds on the efficiency of genome editing in mouse embryos. Consequently, we successfully identified a small-molecule compound that improves knock-in efficiency in genome editing in mouse embryos. Thus, this genome editing system is suitable for screening compounds that can improve knock-in efficiency.</p>","PeriodicalId":12102,"journal":{"name":"Experimental Animals","volume":" ","pages":"526-534"},"PeriodicalIF":2.4,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10658088/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9746365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Loss of N-acetylglucosaminyl transferase V is involved in the impaired osteogenic differentiation of bone marrow mesenchymal stem cells. n -乙酰氨基葡萄糖转移酶V的缺失与骨髓间充质干细胞成骨分化受损有关。
IF 2.4 4区 农林科学
Experimental Animals Pub Date : 2023-08-07 DOI: 10.1538/expanim.22-0129
Xiao-Po Liu, Jia-Qi Li, Ruo-Yu Li, Guo-Long Cao, Yun-Bo Feng, Wei Zhang
{"title":"Loss of N-acetylglucosaminyl transferase V is involved in the impaired osteogenic differentiation of bone marrow mesenchymal stem cells.","authors":"Xiao-Po Liu,&nbsp;Jia-Qi Li,&nbsp;Ruo-Yu Li,&nbsp;Guo-Long Cao,&nbsp;Yun-Bo Feng,&nbsp;Wei Zhang","doi":"10.1538/expanim.22-0129","DOIUrl":"https://doi.org/10.1538/expanim.22-0129","url":null,"abstract":"<p><p>The imbalance of bone resorption and bone formation causes osteoporosis (OP), a common skeletal disorder. Decreased osteogenic activity was found in the bone marrow cultures from N-acetylglucosaminyl transferase V (MGAT5)-deficient mice. We hypothesized that MGAT5 was associated with osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) and involved in the pathological mechanisms of osteoporosis. To test this hypothesis, the mRNA and protein expression levels of MGAT5 were determined in bone tissues of ovariectomized (OVX) mice, a well-established OP model, and the role of MGAT5 in osteogenic activity was investigated in murine BMSCs. As expected, being accompanied by the loss of bone mass density and osteogenic markers (runt-related transcription factor 2, osteocalcin and osterix), a reduced expression of MGAT5 in vertebrae and femur tissues were found in OP mice. In vitro, knockdown of Mgat5 inhibited the osteogenic differentiation potential of BMSCs, as evidenced by the decreased expressions of osteogenic markers and less alkaline phosphatase and alizarin red S staining. Mechanically, knockdown of Mgat5 suppressed the nuclear translocation of β-catenin, thereby downregulating the expressions of downstream genes c-myc and axis inhibition protein 2, which were also associated with osteogenic differentiation. In addition, Mgat5 knockdown inhibited bone morphogenetic protein (BMP)/transforming growth factor (TGF)-β signaling pathway. In conclusion, MGAT5 may modulate the osteogenic differentiation of BMSCs via the β-catenin, BMP type 2 (BMP2) and TGF-β signals and involved in the process of OP.</p>","PeriodicalId":12102,"journal":{"name":"Experimental Animals","volume":"72 3","pages":"413-424"},"PeriodicalIF":2.4,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/27/67/expanim-72-413.PMC10435351.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10040903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neuroprotective effects of betanin in mice with cerebral ischemia-reperfusion injury. 甜菜素对脑缺血再灌注损伤小鼠的神经保护作用。
IF 2.4 4区 农林科学
Experimental Animals Pub Date : 2023-08-07 DOI: 10.1538/expanim.22-0176
Wachiryah Thong-Asa, Kanthaporn Puenpha, Thannaporn Lairaksa, Siriwipha Saengjinda
{"title":"Neuroprotective effects of betanin in mice with cerebral ischemia-reperfusion injury.","authors":"Wachiryah Thong-Asa,&nbsp;Kanthaporn Puenpha,&nbsp;Thannaporn Lairaksa,&nbsp;Siriwipha Saengjinda","doi":"10.1538/expanim.22-0176","DOIUrl":"https://doi.org/10.1538/expanim.22-0176","url":null,"abstract":"<p><p>Cerebral ischemia reperfusion (IR) injury as found in stroke is a complex and heterogeneous disorder and closely related to disability and death. Today, nutraceuticals and protective therapy to increase neuronal integrity and prevent pathological complication are common. We investigated the neuroprotective effect of betanin against cerebral IR injury in mice. Forty male institute of cancer research (ICR) mice were divided into Sham-veh, IR-veh, IR-Bet50 and IR-Bet100 groups. After 2 weeks of oral administration of normal saline (vehicle; veh) or 50 mg/kg or 100 mg/kg of betanin (Bet), mice were subjected to IR induction using 30-min bilateral common carotid artery occlusion, followed by 24 h of reperfusion. Brain infarction, oxidative status, cortical and hippocampal neurons and white matter pathologies were evaluated. Results showed that IR significantly increases brain infarction, Cornus Ammonis 1 (CA1) hippocampal and corpus callosum (CC) and internal capsule (IC) white matter degeneration (P<0.05). Brain oxidative status revealed significant elevation of malondialdehyde (MDA) together with a significant decrease in catalase (CAT) activity, induced by IR (P<0.05). Pretreatment with betanin 100 mg/kg led to a significant reduction in brain infarction and MDA, CA1 hippocampus, CC and IC white matter degeneration. Betanin also led to a significant increase in CAT activity (P<0.05), with enhancing effect on reduced glutathione levels (GSH, P<0.05). The present study revealed the neuroprotective efficacy of betanin against IR injury in mice's brains, including its inhibition of lipid peroxidation, and boosting of GSH and CAT activity.</p>","PeriodicalId":12102,"journal":{"name":"Experimental Animals","volume":"72 3","pages":"336-345"},"PeriodicalIF":2.4,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e7/02/expanim-72-336.PMC10435356.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10417714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Knockdown of histone deacetylase 9 attenuates sepsis-induced myocardial injury and inflammatory response. 组蛋白去乙酰化酶9的下调可减轻败血症引起的心肌损伤和炎症反应。
IF 2.4 4区 农林科学
Experimental Animals Pub Date : 2023-08-07 DOI: 10.1538/expanim.22-0072
Long Yang, Chunxue Wu, Ying Cui, Shimin Dong
{"title":"Knockdown of histone deacetylase 9 attenuates sepsis-induced myocardial injury and inflammatory response.","authors":"Long Yang,&nbsp;Chunxue Wu,&nbsp;Ying Cui,&nbsp;Shimin Dong","doi":"10.1538/expanim.22-0072","DOIUrl":"https://doi.org/10.1538/expanim.22-0072","url":null,"abstract":"Myocardial cell damage is associated with apoptosis and excessive inflammatory response in sepsis. Histone deacetylases (HDACs) are implicated in the progression of heart diseases. This study aims to explore the role of histone deacetylase 9 (HDAC9) in sepsis-induced myocardial injury. Lipopolysaccharide (LPS)-induced Sprague Dawley rats and cardiomyocyte line H9C2 were used as models in vivo and in vitro. The results showed that HDAC9 was significantly upregulated after LPS stimulation, and HDAC9 knockdown remarkably improved cardiac function, as evidenced by decreased left ventricular internal diameter end diastole (LVEDD) and left ventricular internal diameter end systole (LVESD), and increased fractional shortening (FS)% and ejection fraction (EF)%. In addition, HDAC9 silencing alleviated release of inflammatory cytokines (tumor necrosis factor-α (TNF-α), IL-6 and IL-1β) and cardiomyocyte apoptosis in vivo and in vitro. Furthermore, HDAC9 inhibition was proved to suppress nuclear factor-kappa B (NF-κB) activation with reducing the levels of p-IκBα and p-p65, and p65 nuclear translocation. Additionally, interaction between miR-214-3p and HDAC9 was determined through bioinformatics analysis, RT-qPCR, western blot and dual luciferase reporter assay. Our data revealed that miR-214-3p directly targeted the 3’UTR of HDAC9. Our findings demonstrate that HDAC9 suppression ameliorates LPS-induced cardiac dysfunction by inhibiting the NF-κB signaling pathway and presents a promising therapeutic agent for the treatment of LPS-stimulated myocardial injury.","PeriodicalId":12102,"journal":{"name":"Experimental Animals","volume":"72 3","pages":"356-366"},"PeriodicalIF":2.4,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/4a/d6/expanim-72-356.PMC10435362.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10100547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FERM domain containing kindlin 1 knockdown attenuates inflammation induced by intracerebral hemorrhage in rats via NLR family pyrin domain containing 3/nuclear factor kappa B pathway. 含有kindlin 1敲低的FERM结构域通过NLR家族pyrin结构域3/核因子κ B途径减轻大鼠脑出血引起的炎症。
IF 2.4 4区 农林科学
Experimental Animals Pub Date : 2023-08-07 DOI: 10.1538/expanim.22-0145
Jianqiang Wei, Jing Yin, Ying Cui, Kaijie Wang, Mingyan Hong, Jianzhong Cui
{"title":"FERM domain containing kindlin 1 knockdown attenuates inflammation induced by intracerebral hemorrhage in rats via NLR family pyrin domain containing 3/nuclear factor kappa B pathway.","authors":"Jianqiang Wei,&nbsp;Jing Yin,&nbsp;Ying Cui,&nbsp;Kaijie Wang,&nbsp;Mingyan Hong,&nbsp;Jianzhong Cui","doi":"10.1538/expanim.22-0145","DOIUrl":"https://doi.org/10.1538/expanim.22-0145","url":null,"abstract":"<p><p>Intracerebral hemorrhage (ICH) is an incurable neurological disease. Microglia activation and its related inflammation contribute to ICH-associated brain damage. FERM domain containing kindlin 1 (FERMT1) is an integrin-binding protein that participates in microglia-associated inflammation, but its role in ICH is unclear. An ICH model was constructed by injecting 50 µl of autologous blood into the bregma of rats. FERMT1 siRNA was injected into the right ventricle of the rat for knockdown of FERMT1. A significant striatal hematoma was observed in ICH rats. FERMT1 knockdown reduced the water content of brain tissue, alleviated brain hematoma and improved behavioral function in ICH rats. FERMT1 knockdown reduced microglia activity, inhibited NLR family pyrin domain containing 3 (NLRP3) inflammasome activity and decreased the expression of inflammatory factors including IL-1β and IL-18 in the peri-hematoma tissues. BV2 microglial cells were transfected with FERMT1 siRNA and incubated with 60 µM Hemin for 24 h. Activation of NLRP3 inflammasome induced by hemin were reduced in microglia when FERMT1 was knocked down, leading to decreased production of inflammatory factors IL-1β and IL-18. In addition, knockdown of FERMT1 prevented the activation of nuclear factor kappa B (NF-κB) signaling pathway in vivo and in vitro. Our findings suggested that down-regulation of FERMT1 attenuated microglial inflammation and brain damage induced by ICH via NLRP3/NF-κB pathway. FERMT1 is a key regulator of inflammatory damage in rats after ICH.</p>","PeriodicalId":12102,"journal":{"name":"Experimental Animals","volume":"72 3","pages":"324-335"},"PeriodicalIF":2.4,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/0e/5c/expanim-72-324.PMC10435358.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10033445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The past and present of therapeutic strategy for Alzheimer's diseases: potential for stem cell therapy. 阿尔茨海默病治疗策略的过去和现在:干细胞治疗的潜力。
IF 2.4 4区 农林科学
Experimental Animals Pub Date : 2023-08-07 DOI: 10.1538/expanim.22-0164
Masanori A Murayama
{"title":"The past and present of therapeutic strategy for Alzheimer's diseases: potential for stem cell therapy.","authors":"Masanori A Murayama","doi":"10.1538/expanim.22-0164","DOIUrl":"https://doi.org/10.1538/expanim.22-0164","url":null,"abstract":"<p><p>Alzheimer's disease (AD), a progressive neurodegenerative disease characterized by cognitive dysfunction and neuropsychiatric symptoms, is the most prevalent form of dementia among the elderly. Amyloid aggregation, tau hyperphosphorylation, and neural cell loss are the main pathological features. Various hypotheses have been proposed to explain the development of AD. Some therapeutic agents have shown clinical benefits in patients with AD; however, many of these agents have failed. The degree of neural cell loss is associated with the severity of AD. Adult neurogenesis, which governs cognitive and emotional behaviors, occurs in the hippocampus, and some research groups have reported that neural cell transplantation into the hippocampus improves cognitive dysfunction in AD model mice. Based on these clinical findings, stem cell therapy for patients with AD has recently attracted attention. This review provides past and present therapeutic strategies for the management and treatment of AD.</p>","PeriodicalId":12102,"journal":{"name":"Experimental Animals","volume":"72 3","pages":"285-293"},"PeriodicalIF":2.4,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ae/4a/expanim-72-285.PMC10435354.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10418194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Establishment of a human microbiome- and immune system-reconstituted dual-humanized mouse model. 重建人类微生物组和免疫系统的双人源化小鼠模型的建立。
IF 2.4 4区 农林科学
Experimental Animals Pub Date : 2023-08-07 DOI: 10.1538/expanim.23-0025
Yuyo Ka, Ryoji Ito, Ryoko Nozu, Kayo Tomiyama, Masami Ueno, Tomoyuki Ogura, Riichi Takahashi
{"title":"Establishment of a human microbiome- and immune system-reconstituted dual-humanized mouse model.","authors":"Yuyo Ka,&nbsp;Ryoji Ito,&nbsp;Ryoko Nozu,&nbsp;Kayo Tomiyama,&nbsp;Masami Ueno,&nbsp;Tomoyuki Ogura,&nbsp;Riichi Takahashi","doi":"10.1538/expanim.23-0025","DOIUrl":"https://doi.org/10.1538/expanim.23-0025","url":null,"abstract":"<p><p>Humanized mice are widely used to study the human immune system in vivo and investigate therapeutic targets for various human diseases. Immunodeficient NOD/Shi-scid-IL2rγ<sup>null</sup> (NOG) mice transferred with human hematopoietic stem cells are a useful model for studying human immune systems and analyzing engrafted human immune cells. The gut microbiota plays a significant role in the development and function of immune cells and the maintenance of immune homeostasis; however, there is currently no available animal model that has been reconstituted with human gut microbiota and immune systems in vivo. In this study, we established a new model of CD34<sup>+</sup> cell-transferred humanized germ-free NOG mice using an aseptic method. Flow cytometric analysis revealed that the germ-free humanized mice exhibited a lower level of human CD3<sup>+</sup> T cells than the SPF humanized mice. Additionally, we found that the human CD3<sup>+</sup> T cells slightly increased after transplanting human gut microbiota into the germ-free humanized mice, suggesting that the human microbiota supports T cell proliferation or maintenance in humanized mice colonized by the gut microbiota. Consequently, the dual-humanized mice may be useful for investigating the physiological role of the gut microbiota in human immunity in vivo and for application as a new humanized mouse model in cancer immunology.</p>","PeriodicalId":12102,"journal":{"name":"Experimental Animals","volume":"72 3","pages":"402-412"},"PeriodicalIF":2.4,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/45/05/expanim-72-402.PMC10435363.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10040902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The Kruppel-like factor 4-signal transducer and activator of transcription 5A axis promotes pancreatic fibrosis in mice with caerulein-induced chronic pancreatitis. Kruppel-like factor 4信号换能器和转录5A轴激活因子促进小蛋白诱导的慢性胰腺炎小鼠胰腺纤维化。
IF 2.4 4区 农林科学
Experimental Animals Pub Date : 2023-08-07 DOI: 10.1538/expanim.22-0147
Xiaoxiang Wang, Lan Yu, Yao Chen, Xing Xiong, Hongmei Ran
{"title":"The Kruppel-like factor 4-signal transducer and activator of transcription 5A axis promotes pancreatic fibrosis in mice with caerulein-induced chronic pancreatitis.","authors":"Xiaoxiang Wang,&nbsp;Lan Yu,&nbsp;Yao Chen,&nbsp;Xing Xiong,&nbsp;Hongmei Ran","doi":"10.1538/expanim.22-0147","DOIUrl":"https://doi.org/10.1538/expanim.22-0147","url":null,"abstract":"<p><p>Pancreatic fibrosis (PF) is a hallmark of chronic pancreatitis (CP), but its molecular mechanism remains unclear. This study was conducted to explore the role of Kruppel-like factor 4 (KLF4) in PF in CP mice. The CP mouse model was established using caerulein. After KLF4 interference, pathological changes in pancreatic tissues and fibrosis degree were observed by hematoxylin-eosin staining and Masson staining, and levels of Collagen I, Collagen III, and alpha-smooth muscle actin, inflammatory cytokines, KLF4, signal transducer and activator of transcription 5A (STAT5) in pancreatic tissues were measured by enzyme-linked immunosorbent assay, quantitative real-time polymerase chain reaction, Western blot assay, and immunofluorescence. The enrichment of KLF4 on the STAT5 promoter and the binding of KLF4 to the STAT5 promoter were analyzed. The rescue experiments were performed by co-injection of sh-STAT5 and sh-KLF4 to confirm the regulatory mechanism of KLF4. KLF4 was upregulated in CP mice. Inhibition of KLF4 effectively attenuated pancreatic inflammation and PF in mice. KLF4 was enriched on the STAT5 promoter and enhanced the transcriptional and protein levels of STAT5. Overexpression of STAT5 reversed the inhibitory role of silencing KLF4 in PF. In summary, KLF4 promoted the transcription and expression of STAT5, which further facilitated PF in CP mice.</p>","PeriodicalId":12102,"journal":{"name":"Experimental Animals","volume":"72 3","pages":"379-388"},"PeriodicalIF":2.4,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e0/cf/expanim-72-379.PMC10435357.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10418210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SRY-box transcription factor 9 modulates Müller cell gliosis in diabetic retinopathy by upregulating TXNIP transcription. SRY-box转录因子9通过上调TXNIP转录调节糖尿病视网膜病变中<s:1>勒细胞胶质瘤的发生。
IF 2.4 4区 农林科学
Experimental Animals Pub Date : 2023-08-07 DOI: 10.1538/expanim.22-0126
Sheng Li, Gaoxiang Ouyang, Linhui Yuan, Xiaoxuan Wu, Lijun Zhang
{"title":"SRY-box transcription factor 9 modulates Müller cell gliosis in diabetic retinopathy by upregulating TXNIP transcription.","authors":"Sheng Li,&nbsp;Gaoxiang Ouyang,&nbsp;Linhui Yuan,&nbsp;Xiaoxuan Wu,&nbsp;Lijun Zhang","doi":"10.1538/expanim.22-0126","DOIUrl":"https://doi.org/10.1538/expanim.22-0126","url":null,"abstract":"<p><p>Diabetic retinopathy (DR), a common complication of diabetes, involves excessive proliferation and inflammation of Muller cells and ultimately leads to vision loss and blindness. SRY-box transcription factor 9 (SOX9) has been reported to be highly expressed in Müller cells in light-induced retinal damage rats, but the functional role of SOX9 in DR remains unclear. To explore this issue, the DR rat model was successfully constructed via injection with streptozotocin (65 mg/kg) and the retinal thicknesses and blood glucose levels were evaluated. Müller cells were treated with 25 mmol/l glucose to create a cell model in vitro. The results indicated that SOX9 expression was significantly increased in DR rat retinas and in Müller cells stimulated with a high glucose (HG) concentration. HG treatment promoted the proliferation and migration capabilities of Müller cells, whereas SOX9 knockdown reversed those behaviors. Moreover, SOX9 knockdown provided protection against an HG-induced inflammatory response, as evidenced by reduced tumor necrosis factor-α, IL-1β, and IL-6 levels in serum and decreased NLRP3 inflammasome activation. Notably, SOX9 acted as a transcription factor that positively regulated thioredoxin-interacting protein (TXNIP), a positive regulator of Müller cells gliosis under HG conditions. A dual-luciferase assay demonstrated that SOX9 could enhance TXNIP expression at the transcriptional level through binding to the promoter of TXNIP. Moreover, TXNIP overexpression restored the effects caused by SOX9 silencing. In conclusion, these findings demonstrate that SOX9 may accelerate the progression of DR by promoting glial cell proliferation, metastasis, and inflammation, which involves the transcriptional regulation of TXNIP, providing new theoretical fundamentals for DR therapy.</p>","PeriodicalId":12102,"journal":{"name":"Experimental Animals","volume":"72 3","pages":"302-313"},"PeriodicalIF":2.4,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e4/f0/expanim-72-302.PMC10435361.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10100048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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