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Quantification of spatiotemporal patterns of Ras isoform expression during development.


ABSTRACT: Ras proteins are important signalling hubs frequently dysregulated in cancer and in a group of developmental disorders called Rasopathies. Three Ras genes encode four proteins that differentially contribute to these phenotypes. Using quantitative real-time PCR (qRT-PCR) we have measured the gene expression profiles of each of the Ras isoforms in a panel of mouse tissues derived from a full developmental time course spanning embryogenesis through to adulthood. In most tissues and developmental stages we observe a relative contribution of KRas4B?>?>?NRas???KRas4A?>?HRas to total Ras expression with KRas4B typically representing 60-99% of all Ras transcripts. KRas4A is the most dynamically regulated Ras isoform with significant up-regulation of expression observed pre-term in stomach, intestine, kidney and heart. The expression patterns assist interpretation of the essential role of KRas in development and the preponderance of KRas mutations in cancer.

SUBMITTER: Newlaczyl AU 

PROVIDER: S-EPMC5259795 | biostudies-other | 2017 Jan

REPOSITORIES: biostudies-other

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Quantification of spatiotemporal patterns of Ras isoform expression during development.

Newlaczyl Anna U AU   Coulson Judy M JM   Prior Ian A IA  

Scientific reports 20170124


Ras proteins are important signalling hubs frequently dysregulated in cancer and in a group of developmental disorders called Rasopathies. Three Ras genes encode four proteins that differentially contribute to these phenotypes. Using quantitative real-time PCR (qRT-PCR) we have measured the gene expression profiles of each of the Ras isoforms in a panel of mouse tissues derived from a full developmental time course spanning embryogenesis through to adulthood. In most tissues and developmental st  ...[more]

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