Background: Ubiquitination-mediated M1/M2 macrophage polarization plays important roles in the pathogenesis of immune disease. However, the regulatory mechanism of ubiquitination during M1/M2 macrophage polarization following intracerebral hemorrhage (ICH) has not been well studied.
Methods: In the experiment, macrophages were administered with erythrocyte lysates, and then miR-494-, Nrdp1-, and M1/M2-related markers were analyzed. Brain inflammatory response, brain edema, and neurological functions of ICH mice were also assessed.
Results: We found that miR-494 levels increased while Nrdp1 levels decreased in macrophages after ICH. We also demonstrated that miR-494 inhibited Nrdp1 expression by directly binding its 3'-untranslated region. MiR-494 attenuated C/EBP-β activation and downstream proinflammatory factor production. Upregulation of Nrdp1 in macrophages significantly promoted M2 macrophage polarization via ubiquitinating and activating C/EBP-β. Moreover, the results indicated that miR-494 could enhance M1 macrophage polarization, promote brain edema, and impair neurological functions in ICH mice.
Conclusions: Taken together, our results demonstrated that Nrdp1 contributed to M1/M2 macrophage polarization and neuroinflammation via ubiquitination and activation of C/EBP-β in ICH. miR-494 may provide a promising therapeutic clue for ICH.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7183644 | PMC |
| http://dx.doi.org/10.1186/s12950-020-00247-3 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
miR-208a-3p discriminates osteoporosis, predicts fracture, and regulates osteoclast activation through targeting STC1.
J Orthop Surg Res
January 2025
Department of Rehabilitation, The Affiliated Hospital of Youjiang Medical University for Nationalities, No.18, Zhongshan 2nd Road, Baise, 533000, Guangxi Zhuang Autonomous Region, China.
Background: Osteoporosis (OP) frequently occurs in post-menopausal women, increasing the risk of fracture. Early screening OP could improve the prevention of fractures.This study focused on the significance of miR-208a-3p in diagnosing OP and development regulation, aiming to explore a novel biomarker and therapeutic target for OP.
View Article and Find Full Text PDFMoxifloxacin plus Cordyceps polysaccharide ameliorate intestinal barrier damage due to abdominal infection via anti-inflammation and immune regulation under simulated microgravity.
Life Sci Space Res (Amst)
February 2025
Department of General Surgery, the 306th Hospital of PLA-Peking University Teaching Hospital, Beijing 100101, PR China; Department of General Surgery, the Ninth Medical Center of PLA General Hospital, Beijing 100101, PR China. Electronic address:
Background: Currently, there is limited research on the impact of abdominal infection on intestinal damage under microgravity conditions. Cordyceps polysaccharide (CPS), the main active ingredient of Cordyceps, has demonstrated various pharmacological effects, including anti-inflammatory, antioxidant, and immunomodulatory properties. Moxifloxacin (MXF) is a fourth-generation quinolone antibiotic that is believed to have a dual regulatory effect on immune system activation and suppression.
View Article and Find Full Text PDFDiffuse large B-cell lymphoma cell-derived exosomal NSUN2 stabilizes PDL1 to promote tumor immune escape and M2 macrophage polarization in a YBX1-dependent manner.
Arch Biochem Biophys
January 2025
Department of Nuclear Medicine, Hefei BOE Hospital, Hefei City, Anhui Province, 241000, China. Electronic address:
Background: Diffuse large B-cell lymphoma (DLBCL) is a prevalent and aggressive form of non-Hodgkin's lymphoma with a complex etiology. NOP2/Sun domain 2 (NSUN2) is an RNA methyltransferase that has been linked to the regulation of gene expression in various cancers. However, the function of NSUN2 in DLBCL, specifically its contribution to exosome-driven tumor progression, remains to be thoroughly elucidated.
View Article and Find Full Text PDFKushenol O Regulates GALNT7/NF-κB axis-Mediated Macrophage M2 Polarization and Efferocytosis in Papillary Thyroid Carcinoma.
Phytomedicine
January 2025
The Department of General Surgery, Zhongshan City People's Hospital, Zhongshan, Guangdong Province, 528400, China. Electronic address:
Background: The incidence of papillary thyroid carcinoma (PTC) is on the rise globally. It is frequently associated with early lymphatic metastasis, and the poor prognosis tends to be poor once metastasis or recurrence occurs, even with current treatment modalities. Kushenol O, a novel extract derived from Sophora flavescens, has shown remarkable anticancer properties.
View Article and Find Full Text PDFETV5-Mediated Transcriptional Repression of DDIT4 Blocks Macrophage Pro-Inflammatory Activation in Diabetic Atherosclerosis.
Cardiovasc Toxicol
January 2025
Department of Cadre Ward, The First Affiliated Hospital of Harbin Medical University, No. 23, Postal Street, Harbin, 150001, Heilongjiang, PR China.
Atherosclerosis risk is elevated in diabetic patients, but the underlying mechanism such as the involvement of macrophages remains unclear. Here, we investigated the underlying mechanism related to the pro-inflammatory activation of macrophages in the development of diabetic atherosclerosis. Bioinformatics tools were used to analyze the macrophage-related transcriptome differences in patients with atherosclerosis and diabetic mice.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!