The roles and regulation of multicellular rosette structures during morphogenesis

Area of Science:

• Developmental Biology
• Cell Biology
• Epithelial Biology

Background:

• Multicellular rosettes are transient, polarized epithelial structures observed during organogenesis.
• They recapitulate adult organ form and are found in diverse species and tissues, including zebrafish, Drosophila, and mammalian systems.
• Rosette formation is crucial in various developmental contexts, such as organ system formation and adult stem cell niches.

Purpose of the Study:

• To review recent studies on the genetic regulation and cellular transitions involved in multicellular rosette formation.
• To compare different models of rosette formation across various biological systems.
• To identify and discuss outstanding questions and future research directions in the field of rosette biology.

Main Methods:

• Literature review of recent studies on rosette formation.
• Comparative analysis of rosette formation mechanisms in different model organisms (zebrafish, Drosophila, vertebrates).
• Discussion of genetic regulation, cytoskeletal rearrangements, and extracellular signaling pathways.

Main Results:

• Cytoskeletal rearrangements driving rosette formation are conserved across diverse species.
• Extracellular cues initiating these rearrangements are more varied and less understood.
• Studies reveal conserved and diverse mechanisms underlying rosette formation in development and stem cell niches.

Conclusions:

• Multicellular rosettes are critical developmental intermediates with conserved cellular mechanisms but diverse extracellular regulation.
• Further research is needed to fully elucidate the extracellular cues and signaling pathways governing rosette formation in vivo.
• Understanding rosette formation provides insights into organogenesis, tissue regeneration, and stem cell biology.