Protein arginine methyltransferase 8 regulates ferroptosis and macrophage polarization in spinal cord injury via glial cell-derived neurotrophic factor

A new pathway for ferroptosis regulation: The PRMTs

Protein arginine methyltransferases (PRMTs) play an essential role in the regulation of ferroptosis, a form of programmed cell death characterized by abnormal iron ion metabolism, lipid peroxidation, and DNA damage. Through methylation, PRMTs modify specific proteins, thereby altering their activity, localizations, or interactions with other molecules to control the ferroptosis process. This study was conducted to provide a comprehensive overview of the relationship between PRMTs and ferroptosis, with a focus on the mechanisms by which PRMTs regulate ferroptosis and their effect on this cell death pathway. Currently, only a few studies have been conducted on the regulation of ferroptosis by PRMTs. However, this review provides insights into the effects of PRMTs on ferroptosis regulators, suggesting that the regulation of ferroptosis by PRMTs holds potential as a new therapeutic target for related diseases.

Arginine methylation and respiratory disease

Arginine methylation, a vital post-translational modification, plays a pivotal role in numerous cellular functions such as signal transduction, DNA damage response and repair, regulation of gene transcription, mRNA splicing, and protein interactions. Central to this modification is the role of protein arginine methyltransferases (PRMTs), which have been increasingly recognized for their involvement in the pathogenesis of various respiratory diseases. This review begins with an exploration of the biochemical underpinnings of arginine methylation, shedding light on the intricate molecular regulatory mechanisms governed by PRMTs. It then delves into the impact of arginine methylation and the dysregulation of arginine methyltransferases in diverse pulmonary disorders. Concluding with a focus on the therapeutic potential and recent advancements in PRMT inhibitors, this article aims to offer novel perspectives and therapeutic avenues for the management and treatment of respiratory diseases.

Interaction between macrophages and ferroptosis: Metabolism, function, and diseases

ABSTRACT

Ferroptosis, an iron-dependent programmed cell death process driven by reactive oxygen species-mediated lipid peroxidation, is regulated by several metabolic processes, including iron metabolism, lipid metabolism, and redox system. Macrophages are a group of innate immune cells that are widely distributed throughout the body, and play pivotal roles in maintaining metabolic balance by its phagocytic and efferocytotic effects. There is a profound association between the biological functions of macrophage and ferroptosis. Therefore, this review aims to elucidate three key aspects of the unique relationship between macrophages and ferroptosis, including macrophage metabolism and their regulation of cellular ferroptosis; ferroptotic stress that modulates functions of macrophage and promotion of inflammation; and the effects of macrophage ferroptosis and its role in diseases. Finally, we also summarize the possible mechanisms of macrophages in regulating the ferroptosis process at the global and local levels, as well as the role of ferroptosis in the macrophage-mediated inflammatory process, to provide new therapeutic insights for a variety of diseases.