Angiopoietin-like 4 (ANGPTL4) Suppression Ameliorates Lupus Nephritis in MRL/lpr Mice by Inactivating NLRP3 Inflammasome and Inhibiting Inflammatory Response | ||
| Iranian Journal of Immunology | ||
| دوره 20، شماره 3، پاییز 2023، صفحه 316-326 اصل مقاله (3.44 M) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22034/iji.2023.97942.2541 | ||
| نویسندگان | ||
| Dan Luo1؛ Jun Li1؛ Manli Hu1؛ You Wang1؛ Pei Pi1؛ Min Ning1؛ Jun Wu* 2 | ||
| 1Department of Nephrology, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan 430060, China. | ||
| 2Department of Endocrine, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan 430060, China. | ||
| چکیده | ||
| Background: Lupus nephritis (LN) refers to the injury caused by systemic lupus erythematosus (SLE) involving the kidneys. A previous study identified angiopoietin-like protein 4 (ANGPTL4) as a novel urinary biomarker for tracking disease activity in LN. Objective: To investigate the detailed role and regulatory mechanism of ANGPTL4 in experimental models of LN. Methods: MRL/lpr mice 11-week-old were injected with adeno-associated virus (AAV)-mediated ANGPTL4 short hairpin RNA (shRNA). At 16 and 20 weeks of age, 24-h urine samples were harvested to measure proteinuria levels. After the mice were sacrificed, blood and kidney tissues were harvested to examine serum creatinine (cr) and blood urea nitrogen (BUN) levels, kidney histological changes, and pro-inflammatory cytokine production. Additionally, the levels of NLRP3 inflammasome-associated molecules in mouse renal tissues were detected to clarify the underlying mechanism. Results: The AAV-sh-ANGPTL4 injection significantly reduced the proteinuria, cr, and BUN levels in MRL/lpr mice. ANGPTL4 silencing ameliorated glomerular, tubular, and interstitial damage in mice, mitigating the pathological alternations of LN. In addition, ANGPTL4 knockdown repressed pro-inflammatory cytokine production in the kidneys. Mechanically, ANGPTL4 suppression inhibited NLRP3 inflammasome expression in renal tissues of mice. Conclusion: ANGPTL4 silencing inhibits the NLRP3 inflammasome-mediated inflammatory response, thereby ameliorating LN in MRL/lpr mice. | ||
| کلیدواژهها | ||
| ANGPTL4؛ Inflammation؛ Lupus Nephritis؛ NLRP3 Inflammasome؛ Systemic Lupus Erythematosus | ||
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