CREM Recombinant Rabbit mAb (S-3375-19)

CREM protein (cAMP response element modulator) is a key transcriptional regulator and an important member of the CREB/ATF basic leucine zipper protein family. This protein generates dozens of isoforms through multiple promoters and alternative splicing, which can function as either transcriptional activators or repressors. CREM forms homo- or heterodimers primarily through its leucine zipper domain and binds to cAMP response elements in the promoters of target genes, thereby finely regulating gene expression related to the cAMP signaling pathway. In the reproductive system, CREM acts as a "master switch" during spermatogenesis, particularly regulating the expression of numerous genes required for sperm maturation after meiosis—its deficiency leads to male infertility. In the immune system, CREM is involved in T cell differentiation and functional regulation, promoting the expression of pro-inflammatory cytokines such as IL-17, and is closely associated with autoimmune diseases. In the nervous system and circadian rhythm regulation, CREM participates in regulating neuroplasticity and the expression of clock genes. Furthermore, chronic overexpression or isoform imbalance of CREM protein is associated with various disease states, including systemic lupus erythematosus, cardiac hypertrophy, psychiatric disorders, and certain types of cancer. Therefore, CREM is not only a key molecular link integrating extracellular and intracellular signals with gene expression but also an important potential target in the fields of reproductive medicine, immune diseases, and cancer therapy.