SP2 (Sp2 transcription factor) is a sequence-specific transcription factor that binds to GC box promoter elements and regulates gene expression through RNA polymerase II-mediated transcription 1. SP2 belongs to the Sp-family of transcription factors, which includes Sp1, Sp2, Sp3, and Sp4, all sharing highly conserved structural features including three zinc finger DNA-binding domains and serine/threonine-rich regions, though they are not functionally equivalent 1. Mechanistically, SP2 functions as both a transcriptional activator and repressor, with demonstrated ability to bind specific promoter regions and regulate downstream signaling pathways. A notable example is SP2's role in activating TRPC6 expression by binding to specific promoter regions (-1519 to -1725 bp), which restores calcium influx and downstream pathways in diabetic wound healing 2. SP2 also plays a critical role in immune regulation, as it is necessary for maintaining RORγT expression in human Th17 cells and maximum IL-17 expression, making it essential for Th17-dependent immune responses 3. Clinically, SP2's regulatory functions have therapeutic implications in autoimmunity, tumor progression, and diabetic wound complications, suggesting it could serve as a potential therapeutic target for modulating immune responses and cellular repair mechanisms 32.