Exploring Large MAF Transcription Factors: Functions, Pathology, and Mouse Models with Point Mutations

Area of Science:

• Molecular Biology
• Genetics
• Developmental Biology

Background:

• Large musculoaponeurotic fibrosarcoma (MAF) transcription factors, including c-MAF, MAFA, MAFB, and NRL, possess distinct structural domains.
• These factors play significant roles in various biological processes.
• Dysregulation of MAF factors is implicated in rare genetic disorders.

Purpose of the Study:

• To review the in vivo functions of MAF transcription factors.
• To describe the pathology associated with c-MAF, MAFA, and MAFB point mutations in humans.
• To highlight the utility of mouse models in understanding MAF-related diseases.

Main Methods:

• Generation of genetically modified mice lacking c-MAF, MAFA, and MAFB.
• Phenotypic analysis of these knockout mouse models.
• Review of existing literature on human patient pathologies and associated MAF mutations.

Main Results:

• MAF transcription factors exhibit diverse in vivo functions.
• Point mutations in c-MAF, MAFA, and MAFB are linked to specific rare diseases.
• Murine models recapitulate human disease phenotypes, validating their use in research.

Conclusions:

• Understanding MAF transcription factor functions is vital for rare disease research.
• Mouse models are essential tools for elucidating the pathophysiology of MAF mutations.
• These models facilitate the development of etiology-based targeted therapies for MAF-related disorders.