p53 and its isoforms in DNA double-stranded break repair

Area of Science:

• Molecular Biology
• Genetics
• Cancer Research

Background:

• DNA double-strand breaks (DSBs) are severe genotoxic damages.
• Improper DSB repair leads to genetic instability, mutations, and cancer.
• The tumor suppressor p53 is critical in DNA damage response and frequently mutated in human cancers.

Purpose of the Study:

• To review the functions of the p53 gene family members and their isoforms.
• To explore the role of p53 and its isoforms in DNA double-strand break repair.

Main Methods:

• Literature review of studies on p53 family members and DNA repair.
• Analysis of the roles of different p53 isoforms in cellular response to DNA damage.

Main Results:

• The p53 gene family comprises p53, p63, and p73.
• The human p53 gene encodes at least 12 isoforms.
• Different p53 members and isoforms exhibit distinct functions in DNA damage response and repair.

Conclusions:

• The p53 family, through its diverse isoforms, is essential for maintaining genomic integrity following DNA DSBs.
• Understanding p53 isoform functions is crucial for developing therapeutic strategies against cancer and other diseases linked to genomic instability.