Overexpression of LINC00472 alleviates diabetic kidney disease progression via the miR-21-5p/STAT3 axis.
LINC00472 appears to be downregulated in diabetic kidney disease and may correlate with renal function indicators, but further research is needed to clarify its role and potential as a diagnostic marker.
Where it sits
this study against the rest of the p21 (p021) corpusSummary and findings
This study investigated the role of LINC00472 in diabetic kidney disease (DKD) among 103 patients with type 2 diabetes mellitus and 111 patients with DKD. The study found that LINC00472 was downregulated in DKD patients and correlated with renal function indicators. Overexpression of LINC00472 was shown to suppress cell dysfunction in high-glucose-induced human glomerular mesangial cells.
Abstract
To reveal the diagnostic value and regulatory role of LINC00472 in diabetic kidney disease (DKD). A total of 103 patients with type 2 diabetes mellitus (T2DM) and 111 patients with DKD were enrolled. Serum and urine samples were collected within 24 h of admission. Logistic regression predicted factors inducing DKD, while ROC analysis evaluated the diagnostic value of lncRNA for DKD. Gene expression was detected by RT-qPCR. Cell function was assessed using CCK-8 and Transwell assays. Cytokine concentrations were measured by ELISA. Dual luciferase reporter assays and RNA immunoprecipitation validated intergenic targeting relationships. LINC00472 was downregulated in DKD patients and high-glucose (HG)-induced human glomerular mesangial cells (HGMCs). LINC00472 demonstrated diagnostic value for DKD and correlated with renal function indicators (inverse correlation with serum creatinine and urine albumin-to-creatinine ratio; positive correlation with estimated glomerular filtration rate). Transfection of oe-LINC00472 inhibited HGMC function while reducing expression of fibrosis genes and inflammatory factors. miR-21-5p, a downstream target of LINC00472, was upregulated in DKD patients. A miR-21-5p mimic could reverse the protective effects of LINC00472 overexpression on HGMC cells. STAT3, a downstream target gene of the LINC00472/miR-21-5p axis involved in DKD, was downregulated in DKD patients and after HG treatment. Overexpression of LINC00472 suppresses HGMC cell dysfunction by sponging miR-21-5p, thereby inhibiting fibrosis and inflammation and ameliorating DKD progression.
Background
This paper addresses the role of LINC00472 in the progression of diabetic kidney disease (DKD), a complication of type 2 diabetes mellitus (T2DM). Previous research has indicated that long non-coding RNAs (lncRNAs) may play a role in various diseases, including DKD. Understanding the regulatory mechanisms of LINC00472 could provide insights into potential diagnostic and therapeutic strategies for DKD.
Methods
The study enrolled 103 patients with T2DM and 111 patients with DKD. Serum and urine samples were collected within 24 hours of admission. Logistic regression was used to predict factors inducing DKD, while ROC analysis evaluated the diagnostic value of LINC00472. Gene expression was measured by RT-qPCR, and cell function was assessed using CCK-8 and Transwell assays.
Results
LINC00472 was found to be downregulated in DKD patients. The study reported an inverse correlation between LINC00472 and serum creatinine levels, as well as a positive correlation with estimated glomerular filtration rate. miR-21-5p was identified as a downstream target of LINC00472, which was upregulated in DKD patients.
Interpretation
The findings suggest that LINC00472 may have a regulatory role in DKD, particularly through its interaction with miR-21-5p and STAT3. While the study provides interesting insights, the effect sizes and clinical significance remain unclear due to the observational nature of the data and the lack of direct causal evidence. Additionally, the reliance on a specific patient population may limit the applicability of the results to broader clinical practice.
Key findings
- LINC00472 was downregulated in DKD patients.
- LINC00472 demonstrated diagnostic value for DKD.
- LINC00472 correlated inversely with serum creatinine and positively with estimated glomerular filtration rate.
- miR-21-5p was upregulated in DKD patients.
- Overexpression of LINC00472 inhibited HGMC function while reducing expression of fibrosis genes and inflammatory factors.
Limitations
- Observational study, causation not established.
- Sample size may limit generalizability.
- No direct causal evidence provided.
- Single-site study may introduce bias.