دورية أكاديمية
Immune regulation by oral tolerance induces alternate activation of macrophages and reduces markers of plaque destabilization in Apob tm2Sgy /Ldlr tm1Her/J mice.
العنوان: | Immune regulation by oral tolerance induces alternate activation of macrophages and reduces markers of plaque destabilization in Apob tm2Sgy /Ldlr tm1Her/J mice. |
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المؤلفون: | Thota LN; Research Scholar, Manipal University, (Madhav Nagar, Manipal) at Molecular Immunology Unit Thrombosis Research Institute, Bangalore, India., Ponnusamy T; Research Scholar, Manipal University, (Madhav Nagar, Manipal) at Molecular Immunology Unit Thrombosis Research Institute, Bangalore, India., Philip S; Molecular Immunology unit, Thrombosis Research Institute, Bangalore, India., Lu X; Molecular Immunology unit, Thrombosis Research Institute, London, UK., Mundkur L; Molecular Immunology unit, Thrombosis Research Institute, Bangalore, India. lakshmi.mundkur@triindia.org.in. |
المصدر: | Scientific reports [Sci Rep] 2017 Jun 21; Vol. 7 (1), pp. 3997. Date of Electronic Publication: 2017 Jun 21. |
نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
اللغة: | English |
بيانات الدورية: | Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: MEDLINE |
أسماء مطبوعة: | Original Publication: London : Nature Publishing Group, copyright 2011- |
مواضيع طبية MeSH: | Apolipoprotein B-100/*administration & dosage , Atherosclerosis/*drug therapy , Bacterial Outer Membrane Proteins/*administration & dosage , Chaperonin 60/*administration & dosage , Peptides/*administration & dosage, Animals ; Aorta/drug effects ; Aorta/physiopathology ; Apolipoprotein B-100/genetics ; Atherosclerosis/genetics ; Atherosclerosis/immunology ; Atherosclerosis/pathology ; Bacterial Outer Membrane Proteins/chemistry ; CTLA-4 Antigen/genetics ; Cell Proliferation/drug effects ; Chaperonin 60/genetics ; Chlamydophila pneumoniae/chemistry ; Diet, High-Fat/adverse effects ; Forkhead Transcription Factors/genetics ; Gene Expression Regulation/drug effects ; Humans ; Macrophages/drug effects ; Macrophages/immunology ; Matrix Metalloproteinase 9/genetics ; Mice ; Peptides/genetics ; Sinus of Valsalva/drug effects ; Sinus of Valsalva/immunology ; Spleen/drug effects ; Spleen/immunology ; T-Lymphocytes, Regulatory/drug effects ; Thromboplastin/genetics ; Transforming Growth Factor beta/genetics |
مستخلص: | Atherosclerosis is the leading cause for cardiovascular mortality. We determined the effect of multi-antigenic construct expressing three peptides AHC (ApoB100, HSP60 and outer membrane protein of chlamydia pneumonia) in stabilizing advanced atherosclerosis in Apob tm2Sgy /Ldlr tm1Her/J mice. Atherosclerosis was induced by feeding high fat diet (HFD) to mice for 10 weeks, followed by five oral dosing with purified AHC or ovalbumin on alternate days and continued on HFD for another 10 weeks. Tolerance was associated with significantly higher numbers of regulatory T cells both in aortic sinus and spleen with higher mRNA expression of CTLA4 (3 fold), Foxp3 (1.4 folds) and TGF-β (1.62) in aorta. Tregs cells were found to induce alternate activation of macrophages to M2 phenotype, with a reduction in plaque inflammation. AHC treatment showed evidence of plaque stabilization as observed by reduction in plaque necrosis in aortic sinus (35.8%) and in brachiocephalic artery (26%), with reduced expression of Tissue factor and MMP9. Macrophage apoptosis was reduced and collagen content was enhanced by treatment. Our results suggest that tolerance to atherogenic peptides increases regulatory T cells which activate M2 macrophages, prevent T cell proliferation and reduce plaque destabilization and inflammatory markers thus providing evidences for plaque stabilization in mice with advanced atherosclerosis. |
التعليقات: | Erratum in: Sci Rep. 2018 Oct 24;8(1):15974. (PMID: 30356091) |
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المشرفين على المادة: | 0 (Apolipoprotein B-100) 0 (Bacterial Outer Membrane Proteins) 0 (CTLA-4 Antigen) 0 (Chaperonin 60) 0 (Ctla4 protein, mouse) 0 (Forkhead Transcription Factors) 0 (Foxp3 protein, mouse) 0 (Peptides) 0 (Transforming Growth Factor beta) 9035-58-9 (Thromboplastin) EC 3.4.24.35 (Matrix Metalloproteinase 9) EC 3.4.24.35 (Mmp9 protein, mouse) |
تواريخ الأحداث: | Date Created: 20170623 Date Completed: 20181226 Latest Revision: 20181226 |
رمز التحديث: | 20240628 |
مُعرف محوري في PubMed: | PMC5479867 |
DOI: | 10.1038/s41598-017-04183-w |
PMID: | 28638138 |
قاعدة البيانات: | MEDLINE |
تدمد: | 2045-2322 |
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DOI: | 10.1038/s41598-017-04183-w |