THE ROLE OF N6-METHYLADENOSINE METHYLTRANSFERASE RBM15 IN NONALCOHOLIC FATTY LIVER DISEASE

Rnd3 Ameliorates Diabetic Cardiac Microvascular Injury via Facilitating Trim40-Mediated Rock1 Ubiquitination

ARTICLE HIGHLIGHTS

Impaired cardiac microvascular function is a significant contributor to diabetic cardiomyopathy. Rnd3 expression is notably downregulated in cardiac microvascular endothelial cells under diabetic conditions. Rnd3 overexpression mitigates diabetic myocardial microvascular injury and improves cardiac function through the Rock1/myosin light chain signaling pathway. Rnd3 facilitates the recruitment and interaction with Trim40 to promote Rock1 ubiquitination, thereby preserving endothelial barrier integrity in the diabetic heart.

Circular RNAs, Noncoding RNAs, and N6-methyladenosine Involved in the Development of MAFLD

Noncoding RNAs (ncRNAs), including circular RNAs (circRNAs) and N6-methyladenosine (m6A), have been shown to play a critical role in the development of various diseases including obesity and metabolic disorder-associated fatty liver disease (MAFLD). Obesity is a chronic disease caused by excessive fat accumulation in the body, which has recently become more prevalent and is the foremost risk factor for MAFLD. Causes of obesity may involve the interaction of genetic, behavioral, and social factors. m6A RNA methylation might add a novel inspiration for understanding the development of obesity and MAFLD with post-transcriptional regulation of gene expression. In particular, circRNAs, microRNAs (miRNAs), and m6A might be implicated in the progression of MAFLD. Interestingly, m6A modification can modulate the translation, degradation, and other functions of ncRNAs. miRNAs/circRNAs can also modulate m6A modifications by affecting writers, erasers, and readers. In turn, ncRNAs could modulate the expression of m6A regulators in different ways. However, there is limited evidence on how these ncRNAs and m6A interact to affect the promotion of liver diseases. It seems that m6A can occur in DNA, RNA, and proteins that may be associated with several biological properties. This study provides a mechanistic understanding of the association of m6A modification and ncRNAs with liver diseases, especially for MAFLD. Comprehension of the association between m6A modification and ncRNAs may contribute to the development of treatment tactics for MAFLD.