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Background

Developmental pathways must be responsive to the environment. Phosphorylation of eIF2α enables a family of stress-sensing kinases to trigger the integrated stress response (ISR), which has pro-survival and developmental consequences. Bone morphogenetic proteins (BMPs) regulate multiple developmental processes in organisms from insects to mammals.

Results

Here we show in Drosophila that GCN2 antagonises BMP signalling through direct effects on translation and indirectly via the transcription factor crc (dATF4). Expression of a constitutively active GCN2 or loss of the eIF2α phosphatase dPPP1R15 impairs developmental BMP signalling in flies. In cells, inhibition of translation by GCN2 blocks downstream BMP signalling. Moreover, loss of d4E-BP, a target of crc, augments BMP signalling in vitro and rescues tissue development in vivo.

Conclusion

These results identify a novel mechanism by which the ISR modulates BMP signalling during development."xsd:string
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http://purl.uniprot.org/citations/29609607http://purl.uniprot.org/core/author"Chambers J.E."xsd:string
http://purl.uniprot.org/citations/29609607http://purl.uniprot.org/core/author"Marciniak S.J."xsd:string
http://purl.uniprot.org/citations/29609607http://purl.uniprot.org/core/author"Mookerjee S."xsd:string
http://purl.uniprot.org/citations/29609607http://purl.uniprot.org/core/author"Malzer E."xsd:string
http://purl.uniprot.org/citations/29609607http://purl.uniprot.org/core/author"Dickens J.A."xsd:string
http://purl.uniprot.org/citations/29609607http://purl.uniprot.org/core/author"Dominicus C.S."xsd:string
http://purl.uniprot.org/citations/29609607http://purl.uniprot.org/core/date"2018"xsd:gYear
http://purl.uniprot.org/citations/29609607http://purl.uniprot.org/core/name"BMC Biol"xsd:string
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http://purl.uniprot.org/citations/29609607http://purl.uniprot.org/core/title"The integrated stress response regulates BMP signalling through effects on translation."xsd:string
http://purl.uniprot.org/citations/29609607http://purl.uniprot.org/core/volume"16"xsd:string
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