Frogs model man: In vivo thyroid hormone signaling during development

Area of Science:

• Endocrinology
• Developmental Biology
• Molecular Biology

Background:

• Thyroid hormone (TH) signaling is vital for perinatal development, including neurogenesis and fetal growth.
• Understanding TH endocrinology is critical for treating premature infants, gestational endocrine diseases, and endocrine disruptor effects.
• Amphibian models provide unique advantages for studying in vivo TH signaling due to observable, controlled developmental changes.

Purpose of the Study:

• To review the current need for improved knowledge of perinatal TH endocrinology.
• To highlight recent successes and future prospects of using amphibians to study TH signaling.
• To elucidate molecular mechanisms and functional roles of TH signaling during post-embryonic development.

Main Methods:

• Review of existing literature on TH signaling in amphibians and mammals.
• Focus on amphibian models for observing TH-dependent developmental changes.
• Analysis of conserved molecular mechanisms of TH action, including receptors, cofactors, and chromatin remodeling.

Main Results:

• Amphibian models, particularly frogs, offer precise experimental control over TH responses during development.
• TH signaling pathways, receptors, and developmental roles are highly conserved between amphibians and humans.
• Frog models effectively illustrate fundamental molecular mechanisms of in vivo TH action.

Conclusions:

• Amphibians serve as powerful models for understanding fundamental molecular mechanisms of TH signaling in vivo.
• Insights gained from amphibian studies have direct relevance to human developmental endocrinology.
• Further research using amphibians can advance treatments for developmental disorders and endocrine disruption.