Biological effects of FoxJ2 over-expression

Area of Science:

• Developmental Biology
• Genetics
• Molecular Biology

Background:

• FoxJ2 is a transcription factor from the Fork Head family.
• Its biochemical and functional structures are known, but its biological role is unclear.

Purpose of the Study:

• To investigate the biological function of FoxJ2 using transgenic mouse models.
• To determine the effects of FoxJ2 overexpression on embryonic development and adult phenotypes.

Main Methods:

• Generation of transgenic mice overexpressing FoxJ2.
• In vitro culture of microinjected embryos.
• Analysis of embryonic lethality and adult phenotypes.
• EMSA assays and co-transfection experiments to identify target genes.

Main Results:

• FoxJ2 overexpression led to reduced birth rates and embryonic lethality from E10.5.
• Pre-implantation developmental defects were observed in vitro.
• Adult transgenic mice with detected FoxJ2 expression exhibited mosaicism, premature death, cardiac hypertrophy, and testicular abnormalities.
• Connexin-43 and E-Cadherin were identified as potential FoxJ2-regulated genes.

Conclusions:

• FoxJ2 overexpression has detrimental effects on embryonic development and adult health.
• These effects may be mediated by altered transcription of Connexin-43 and/or E-Cadherin.
• FoxJ2 plays a critical role in mammalian development and organ homeostasis.