Histone deacetylase 11 (HDAC11) belongs to the HDAC family, which plays a significant role in the regulation of gene expression through the removal of acetyl groups from lysine residues on histone proteins. This action leads to the condensation of chromatin and subsequent repression of gene transcription. HDAC11 is unique within the HDAC family due to its distinct structure and substrate specificity, contributing to its specific role in immunological function, inflammation, and lipid metabolism. As the most recently identified member of the HDAC family, HDAC11's precise physiological roles are still being elucidated, but emerging research suggests its involvement in the regulation of immune responses and the differentiation of fat cells, indicating its impact on various diseases, including cancer, metabolic disorders, and autoimmune diseases. The ability of HDAC11 to modulate gene expression and cellular processes underscores the importance of its regulation for maintaining cellular homeostasis and responding to physiological and pathological stimuli.
The inhibition of HDAC11 represents a strategic approach to modulating its regulatory effects on gene expression and chromatin structure. Inhibition can occur through various mechanisms, including the use of small molecule inhibitors that bind to the active site of HDAC11, blocking its deacetylase activity. This leads to increased acetylation of histones, resulting in a more open chromatin structure and activation of gene transcription. Such inhibitors can be designed to target HDAC11 specifically or to have broader specificity within the HDAC family.