LncRNA MEG3 inhibits rheumatoid arthritis through miR-141 and inactivation of AKT/mTOR signalling pathway.

LncRNA MEG3 inhibits rheumatoid arthritis through miR-141 and inactivation of AKT/mTOR signalling pathway. J Cell Mol Med. 2019 Aug 14;: Authors: Li G, Liu Y, Meng F, Xia Z, Wu X, Fang Y, Zhang C, Zhang Y, Liu D Abstract Rheumatoid arthritis (RA) is a chronic inflammation mediated by autoimmune responses. MEG3, a kind of long noncoding RNA (lncRNA), participates in cell proliferation in cancer tissues. However, the correlation between MEG3 and RA is yet unclear. Therefore, to clarify how MEG3 works in RA, we performed a series of experiments using RA samples. We found that MEG3 was downregulated in the fibroblast-like synoviocytes of RA patients (RA-FLS), in comparison with healthy subjects. MEG3 was also down-regulated evidently in lipopolysaccharide (LPS)-treated chondrocyte. As part of our experiments, MEG3 was overexpressed in chondrocyte by transfection with lentivirus containing sequences encoding MEG3. In addition, in presence of LPS, reductions were identified not only in the cell proliferation, but also in the generation of interleukin-23 (IL-23), which, however were reversed in the lentivirus (containing MEG3-encoding sequences)-transfected chondrocytes. Up-regulated MEG3 resulted in an increase the level of Ki67. Moreover, MEG3 was negatively correlated with miR-141, and miR-141 was up-regulated in LPS-treated chondrocyte. Inhibitory effects of MEG3 overexpression, mentioned above, were partially abolished by overexpressed miR-141. Further, an...
Source: J Cell Mol Med - Category: Molecular Biology Authors: Tags: J Cell Mol Med Source Type: research

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Authors: Moll J, Isailovic N, De Santis M, Selmi C Abstract BACKGROUND: Serum rheumatoid factors are autoantibodies of different isotypes directed against the Fc fraction of immunoglobulin G (IgG) and represent paradigmatic autoantibodies that have been largely used in clinical practice for decades. Traditionally IgG has been associated with rheumatoid arthritis and more recently included also in the classification criteria for Sjӧgren's syndrome. Researchers have established that rheumatoid factors are positive in a variety of infectious, autoimmune, and neoplastic disorders, thus requiring a comprehensive evalua...
Source: The Israel Medical Association Journal - Category: General Medicine Tags: Isr Med Assoc J Source Type: research
Authors: Adawi M, Firas S, Blum A Abstract BACKGROUND: Inflammation is the basic mechanism leading to many pathological processes, including degenerative diseases, atherosclerosis, and cancer. We found an interesting link connecting rheumatoid arthritis and atherosclerosis that may explain the high cardiovascular event rate among patients with rheumatoid arthritis, but also may lead to a new way of thinking and a better understanding of atherosclerosis. Rheumatoid arthritis could serve as a model of accelerated atherosclerosis. Understanding the basic mechanisms of rheumatoid arthritis may solve some of the complex...
Source: The Israel Medical Association Journal - Category: General Medicine Tags: Isr Med Assoc J Source Type: research
Our body is flexible due the joints. These joints connect two bones, provide support and help in the body parts movement. Joint pain is a feeling of discomfort, aches and soreness in any of our body ’s joint. There have been lots of cases of people having aches in their joints. These joint pains are due to injuries affecting the ligaments, bursae, or tendons surrounding the joint. Pain in the joints is also due to infection and inflammation and in an extremely rare case because of cancer. It becomes extremely painful when you try to move your body parts suffering this pain.There are different conditions which are res...
Source: radRounds - Category: Radiology Authors: Source Type: blogs
Conclusion: It was demonstrated that metabolomic profiling was useful to generate better biomarkers in AoDILD. PMID: 31488947 [PubMed]
Source: Biomarker Insights - Category: General Medicine Authors: Tags: Biomark Insights Source Type: research
Conclusion: Natural recovery after TBI may include delayed onset of functional decline or early recovery, followed by progressive deterioration, and is negatively affected by medical comorbidities. Results contribute to the growing evidence that TBI is most appropriately treated as a chronic medical condition complicated by a variety of comorbid conditions.
Source: The Journal of Head Trauma Rehabilitation - Category: Neurology Tags: Original Articles Source Type: research
CONCLUSION: (1) Both immune disorder and bone metabolic dysregulation could be the shared mechanism in the development of PsA, PV, RA, and GA. (2) Immune dysfunction is involved in GA. Our study may shed new light on the diagnosis and treatment strategy of these autoimmune diseases and GA, which warrants further studies. PMID: 31465725 [PubMed - in process]
Source: Discovery Medicine - Category: Research Tags: Discov Med Source Type: research
Rheumatoid arthritis (RA) is a progressive, destructive autoimmune arthritis. Break of tolerance and formation of autoantibodies occur years before arthritis. Adaptive immunity is initiated in lymphoid tissue where lymph node stromal cells (LNSCs) play a crucial role in shaping the immune response and maintaining peripheral tolerance. Here we performed the first epigenomic characterization of LNSCs during health and early RA, by analyzing their transcriptome and DNA methylome in LNSCs isolated from lymph node needle biopsies obtained from healthy controls (HC), autoantibody positive RA-risk individuals and patients with es...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Abstract The TGF-β superfamily of cytokines plays pivotal roles in the regulation of immune responses protecting against or contributing to diseases, such as, allergy, autoimmunity and cancer. Activin-A, a member of the TGF-β superfamily, was initially identified as an inducer of follicle-stimulating hormone secretion. Extensive research over the past decades illuminated fundamental roles for activin-A in essential biologic processes, including embryonic development, stem cell maintenance and differentiation, haematopoiesis, cell proliferation and tissue fibrosis. Activin-A signals through two type I and...
Source: Journal of Autoimmunity - Category: Allergy & Immunology Authors: Tags: J Autoimmun Source Type: research
AbstractThe Innovation and Value Initiative started the Open-Source Value Project with the aim to improve the credibility and relevance of model-based value assessment in the context of the US healthcare environment. As a core activity of the Open-Source Value Project, the Innovation and Value Initiative develops and provides access to flexible open-source economic models that are developed iteratively based on public feedback and input. In this article, we describe our experience to date with the development of two currently released, Open-Source Value Project models, one in rheumatoid arthritis and one in epidermal growt...
Source: PharmacoEconomics - Category: Health Management Source Type: research
AbstractMolecules secreted by cells into the internal environment during aging, including those secreted in exosomes, have long been a matter of concern. Those cells that absorb exosomes, also known as recipient cells, exhibit certain phenotypic changes because of the regulatory role of functional molecules (including proteins and nucleic acids) released in exosomes. Involvement of noncoding RNAs (ncRNAs) in the regulation of aging has received increasing attention, and long ncRNAs (lncRNAs) have become one of the research hotspots in recent years. LncRNAs carried by exosomes play a role in intercellular communication betw...
Source: IUBMB Life - Category: Research Authors: Tags: CRITICAL REVIEW Source Type: research
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