SETD7 Dual Role in Disease and Opportunities for Therapeutic Intervention: Current Perspectives

SET domain-containing lysine methyltransferase 7 (SETD7) is a critical enzyme that methylates lysine residues on both histone and non-histone proteins, thereby regulating gene expression and protein function. This methyltransferase plays a versatile and context-dependent role in a wide range of physiological processes, including cell differentiation, reactive oxygen species (ROS) signaling, oxidative stress regulation, and energy metabolism. SETD7's dual nature is highlighted by its paradoxical involvement in various diseases such as cancer, asthma, and Alzheimer's disease, where it can either promote or suppress pathological progression depending on the cellular environment and molecular context. The multifaceted functions of SETD7 underscore its importance in maintaining cellular homeostasis but also present significant challenges for therapeutic targeting. Although selective inhibitors like Cyproheptadine and (R)-PFI-2 have recently been identified, the development of highly specific and effective therapies remains complex due to SETD7's broad regulatory roles and the potential for unintended effects on normal physiological processes. These challenges necessitate nuanced therapeutic strategies, including the exploration of combination treatments and context-specific modulation to maximize efficacy while minimizing adverse outcomes. This review comprehensively explores SETD7's structure, subcellular localization, and diverse biological functions in both normal and disease states. By elucidating the dual and context-dependent nature of SETD7, it aims to provide a framework for future research focused on unraveling its molecular mechanisms and advancing targeted therapeutic approaches that leverage its unique regulatory capabilities.