PT21 Nasal spray 10mg

P21 Nasal spray also known as cyclin-dependent kinase inhibitor 1 (CDKI1), is a crucial regulatory protein that plays a significant role in the cell cycle by inhibiting cyclin-dependent kinases (CDKs). This peptide is predominantly expressed in response to various stress signals, including DNA damage and oncogenic stress, serving as a pivotal mediator in the cellular response to these stimuli. By halting the cell cycle, P21 helps maintain genomic stability and prevents the proliferation of damaged cells, thus acting as a tumor suppressor. Its dysregulation is often associated with various cancers, making P21 a focus of research for potential therapeutic interventions in cancer treatment and other diseases characterized by uncontrolled cell growth.