Additionally, tumors often exhibit heterogeneity, meaning not all cells may express the target receptors or undergo apoptosis. This temporary arrest provides the cell with the necessary time to activate repair mechanisms mediated by proteins such as BRCA1 and RAD51.
How P53 Gene Work Tumor Suppressor Function
The result is the activation of caspases and the systematic dismantling of the cell to prevent oncogenic transformation. Induction of Apoptosis via Intrinsic Pathways If the DNA damage is irreparable, p53 shifts its role from protector to executioner.
The p53 gene operates as the primary guardian of the genome, a transcription factor that continuously monitors cellular integrity. Therapeutic Implications and Oncogenic Resistance Understanding how p53 works has been fundamental to oncology, as mutations in this gene are present in over 50% of human cancers.
How P53 Gene Work Tumor Suppressor Function
In invertebrates, homologs of p53 manage stress responses, while in mammals, the gene has diversified into multiple isoforms with distinct functions. Loss-of-function mutations often disable the G1 checkpoint, allowing cells with genomic instability to proliferate unchecked.
More About How does the p53 gene work
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