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Abstract: The limb anatomy displays well-defined dorsal and ventral compartments, housing extensor, and flexor muscles, which play a crucial role in facilitating limb locomotion and manipulation. Despite its importance, the study of limb dorsoventral patterning has been relatively neglected compared to the other two axes leaving many crucial questions about the genes and developmental processes implicated unanswered. This review offers a thorough overview of the current understanding of limb dorsoventral patterning, synthesizing classical literature with recent research. It covers the specification of dorsal fate in the limb mesoderm and its subsequent translation into dorsal morphologies?a process directed by the transcription factor Lmx1b. We also discuss the potential role of dorsoventral patterning in the evolution of paired appendages and delve into the involvement of LMX1B in Nail-Patella syndrome, discussing the molecular and genetic aspects underlying this condition. Finally, the potential role of dorsoventral polarity in digit tip regeneration, a prominent instance of multi-tissue regeneration in mammals is also considered. We anticipate that this review will renew interest in a process that is critical to limb function and evolutionary adaptations but has nonetheless been overlooked.
Authorship: Castilla-Ibeas A., Zdral S., Oberg K.C., Ros M.A.,
Fuente: Developmental Dynamics, 2024, 1-17
Publisher: Wiley-Liss
Year of publication: 2024
No. of pages: 17
Publication type: Article
DOI: 10.1002/dvdy.695
ISSN: 1058-8388,1097-0177
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ALEJANDRO CASTILLA IBEAS
SOFIA ZDRAL NOGUERO
OBERG, KERBY C.
ROS, MARIAN A.
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