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2015 ; 8
(8
): 769-82
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RASopathies: unraveling mechanisms with animal models
#MMPMID26203125
Jindal GA
; Goyal Y
; Burdine RD
; Rauen KA
; Shvartsman SY
Dis Model Mech
2015[Aug]; 8
(8
): 769-82
PMID26203125
show ga
RASopathies are developmental disorders caused by germline mutations in the
Ras-MAPK pathway, and are characterized by a broad spectrum of functional and
morphological abnormalities. The high incidence of these disorders (?1/1000
births) motivates the development of systematic approaches for their efficient
diagnosis and potential treatment. Recent advances in genome sequencing have
greatly facilitated the genotyping and discovery of mutations in affected
individuals, but establishing the causal relationships between molecules and
disease phenotypes is non-trivial and presents both technical and conceptual
challenges. Here, we discuss how these challenges could be addressed using
genetically modified model organisms that have been instrumental in delineating
the Ras-MAPK pathway and its roles during development. Focusing on studies in
mice, zebrafish and Drosophila, we provide an up-to-date review of animal models
of RASopathies at the molecular and functional level. We also discuss how
increasingly sophisticated techniques of genetic engineering can be used to
rigorously connect changes in specific components of the Ras-MAPK pathway with
observed functional and morphological phenotypes. Establishing these connections
is essential for advancing our understanding of RASopathies and for devising
rational strategies for their management and treatment.