Abstract:
:How organisms control organ size is not fully understood. We found that Syd/JIP3 is required for proper wing size in Drosophila. JIP3 mutations are associated with organ size defects in mammals. The underlying mechanisms are not well understood. We discovered that Syd/JIP3 inhibition results in a downregulation of the inhibitor of apoptosis protein 1 (Diap1) in the Drosophila wing. Correspondingly, Syd/JIP3 deficient tissues exhibit ectopic cell death and yield smaller wings. Syd/JIP3 inhibition generated similar effects in mammalian cells, indicating a conserved mechanism. We found that Yorkie/YAP stimulates Syd/JIP3 in Drosophila and mammalian cells. Notably, Syd/JIP3 is required for the full effect of Yorkie-mediated tissue growth. Thus Syd/JIP3 regulation of Diap1 functions downstream of Yorkie/YAP to control growth. This study provides mechanistic insights into the recent and perplexing link between JIP3 mutations and organ size defects in mammals, including in humans where de novo JIP3 variants are associated with microcephaly.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Ahmad V,Vadla GP,Chabu CYdoi
10.1016/j.ydbio.2020.09.017subject
Has Abstractpub_date
2021-01-01 00:00:00pages
37-45eissn
0012-1606issn
1095-564Xpii
S0012-1606(20)30265-7journal_volume
469pub_type
杂志文章abstract::The acquisition of fertilizability in coelomic eggs of Xenopus laevis has been shown to be correlated with the physical, biochemical, and ultrastructural alterations of the egg envelope [coelomic envelope (CE)] induced during the passage of eggs through the pars recta portion of the oviduct. However, no direct evidenc...
journal_title:Developmental biology
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journal_title:Developmental biology
pub_type: 杂志文章
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journal_title:Developmental biology
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pub_type: 杂志文章
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