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Condition: Inflammatory Bowel Disease
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Total 78 results found since Jan 2013.
Spermidine protects intestinal mucosal barrier function in mice colitis via the AhR/Nrf2 and AhR/STAT3 signaling pathways
CONCLUSION: Our study demonstrated that spermidine rescues intestinal barrier defects in mice with colitis via the AhR-Nrf2 and AhR-STAT3 pathways, providing a potential therapeutic agent for IBD and other conditions associated with dysregulated gut barrier function.PMID:37104918 | DOI:10.1016/j.intimp.2023.110166
Source: International Immunopharmacology - April 27, 2023 Category: Allergy & Immunology Authors: Bing Yan Xinjie Mao Shasha Hu Shimin Wang Xiaochen Liu Jing Sun Source Type: research
Vitamin D3 alleviates inflammation in ulcerative colitis by activating the VDR-NLRP6 signaling pathway
In this study, we carried out histological and physiological analyses in UC patients and UC mice. RNA sequencing (RNA-seq), assays for transposase-accessible chromatin with high-throughput sequencing (ATAC-seq), chromatin immunoprecipitation (ChIP) assays and protein and mRNA expression were performed to analyze and identify the potential molecular mechanism in UC mice and lipopolysaccharide (LPS)-induced mouse intestinal epithelial cells (MIECs). Moreover, we established nucleotide-binding oligomerization domain (NOD)-like receptor protein nlrp6-/- mice and siRNA-NLRP6 MIECs to further characterize the role of NLRP6 in an...
Source: Frontiers in Immunology - February 8, 2023 Category: Allergy & Immunology Source Type: research
Photoaffinity labelling-based chemoproteomic strategy identifies PEBP1 as the target of ethyl gallate against macrophage activation
Chem Commun (Camb). 2023 Jan 4. doi: 10.1039/d2cc05440j. Online ahead of print.ABSTRACTUlcerative colitis (UC) is an inflammatory disease of the colon with an unmet need for therapeutic targets. Ethyl gallate (EG) is a natural small molecule for UC treatment, but its cellular target is unknown. By labelling EG with a diazirine photocrosslinker and a click chemistry handle, we identified phosphatidyl-ethanolamine binding protein1 (PEBP1) as a direct cellular target of EG by forming hydrogen bonds with Asp70 and Tyr120. In particular, hydrogen/deuterium exchange mass spectrometry indicated that EG induced the sequence (resid...
Source: Chemical Communications - January 4, 2023 Category: Chemistry Authors: Wei Yu Min Liao Yang Chen Rui Xue Xiao-Meng Shi Dan Liu Fang-Fang Zhuo Hui Tang Zhi-Yuan Lu Peng-Fei Tu Bo Han Xin Jia Ke-Wu Zeng Source Type: research
CYP24A1 Involvement in Inflammatory Factor Regulation Occurs via the Wnt Signaling Pathway
ConclusionTaken together, this study suggests that inflammatory factors may increase CYP24A1 expressionvia NF- κB pathway activation, which in turn stimulates Wnt signaling.
Source: Journal of Huazhong University of Science and Technology -- Medical Sciences -- - October 17, 2022 Category: Research Source Type: research
Gemini lipid nanoparticle (GLNP)-mediated oral delivery of TNF- α siRNA mitigates gut inflammation < em > via < /em > inhibiting the differentiation of CD4 < sup > + < /sup > T cells
Nanoscale. 2022 Sep 28. doi: 10.1039/d1nr05644a. Online ahead of print.ABSTRACTProinflammatory cytokines such as Tumor Necrosis Factor-α (TNF-α) are critical mediators of inflammatory bowel disease pathogenesis, and are important targets to restore intestinal homeostasis. Herein, we present the engineering and screening of gemini lipid nanoparticles (GLNPs) for siRNA delivery to colon epithelial cells, macrophages and dendritic cells, and their ability to deliver siRNA therapeutics to the inflamed gastrointestinal tract. We synthesized eight gemini cationic lipids by tethering two lithocholic acid molecules through 3'-hy...
Source: Cell Research - September 28, 2022 Category: Cytology Authors: Priyanka Verma Amit Arora Kajal Rana Devashish Mehta Raunak Kar Vikas Verma C V Srikanth Veena S Patil Avinash Bajaj Source Type: research
Indirubin regulates T cell differentiation by promoting αVβ8 expression in bone marrow-derived dendritic cells to alleviate inflammatory bowel disease
This study aimed to isolate bone marrow-derived dendritic cells (BMDCs) using lipopolysaccharide (LPS) to obtain mature DCs (mDCs). The expression of CD80, CD86, CD40, and MHC-II was detected using flow cytometry after treatment with IDRB. αVβ8 siRNA was used to knock down αVβ8 in mDCs, and the expression of CD80, CD86, CD40, and MHC-II was detected. Meanwhile, DCs were co-cultured with T cells. Then, T cell differentiation was detected using flow cytometry, and the cytokine levels were detected using enzyme-linked immunosorbent assay. The animal model of dextran sulfate sodium (DSS)-induced inflammatory bowel disease ...
Source: Cell Research - September 26, 2022 Category: Cytology Authors: Tao Zhang Hong Peng Yunxiang Li Xiaoqing Zhou Wenfeng Pu Yan Zhang Zhonghan Du Fuxia Wei Siqing Li Qian Zhou Source Type: research
siRNA-based nanotherapeutics as emerging modalities for immune-mediated diseases: A preliminary review
This study will pave the way for new avenues of research into the diagnosis and treatment of IMDs.PMID:35830711 | DOI:10.1002/cbin.11841
Source: Cell Biology International - July 13, 2022 Category: Cytology Authors: Saman Sargazi Rabia Arshad Reza Ghamari Abbas Rahdar Ali Bakhshi Sonia Fathi Karkan Narges Ajalli Muhammad Bilal Ana M D íez-Pascual Source Type: research
The Proinflammatory Role of Guanylate-Binding Protein 5 in Inflammatory Bowel Diseases
NLRP3 inflammasome is implicated in the pathogenesis of inflammatory bowel diseases (IBD). Since guanylate-binding protein 5 (GBP5) induces the NLRP3 inflammasome activity, we aim to investigate the potential role of GBP5 in IBD pathogenesis. The expression of GBP5, NLRP3 inflammasome, and related cytokines and chemokines was examined in two cohorts of IBD patients and healthy controls, by microarray transcriptome analysis and quantitative real-time PCR. Cellular localization of GBP5 in colonic biopsies was examined by immunohistochemistry and immunofluorescence with confocal microscopy. For functional studies, GBP5 was in...
Source: Frontiers in Microbiology - June 2, 2022 Category: Microbiology Source Type: research
Systemic delivery of siRNA to the colon using peptide modified PEG-PCL polymer micelles for the treatment of ulcerative colitis
In this study, we investigated the effects of siRNA delivered using MPEG-PCL-CH2R4H2C nanomicelles through intravenous administration to the inflammation site of dextran sulfate sodium-induced colitis mice. The MPEG-PCL-CH2R4H2C micelles had optimum physical properties and high siRNA compaction ability. Moreover, model-siRNA delivered through MPEG-PCL-CH2R4H2C showed higher accumulation in the inflammatory site than that of the naked siRNA. Furthermore, intravenous administration of MPEG-PCL-CH2R4H2C/siRelA micelles, targeting siRelA, a subunit of NF-κB, significantly decreased the shortening of large intestine, clinical ...
Source: European Journal of Pharmaceutics and Biopharmaceutics - December 29, 2021 Category: Drugs & Pharmacology Authors: Hisako Ibaraki Naruhiro Hatakeyama Naoki Arima Akihiro Takeda Yasuo Seta Takanori Kanazawa Source Type: research
Therapeutic Targeting of Nrf2 Signaling by Maggot Extracts Ameliorates Inflammation-Associated Intestinal Fibrosis in Chronic DSS-Induced Colitis
In conclusion, this is the first ever report demonstrating that ME ameliorates inflammation-associated intestinal fibrosis by suppressing TGF-β1/SMAD pathway via upregulation of Nrf2 expression. Our findings highlight the potential of Nrf2 as an effective therapeutic target for alleviating intestinal fibrosis.
Source: Frontiers in Immunology - August 12, 2021 Category: Allergy & Immunology Source Type: research
