FB2024_03 , released June 25, 2024
Human Disease Model Report: Costello syndrome
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General Information
Name
Costello syndrome
FlyBase ID
FBhh0001345
Disease Ontology Term
Parent Disease
Overview

This report describes Costello syndrome (CSTLO); CSTLO exhibits autosomal dominant inheritance. The human gene implicated in this disease is HRAS, one of three closely related RAS proteins in human. The RAS proteins are GDP/GTP-binding proteins that act as intracellular signal transducers and are crucial players in many signaling networks affecting normal cell growth. There is a single high-scoring ortholog in Drosophila, Ras85D, for which classical amorphic and hypomorphic alleles, RNAi-targeting constructs, and alleles caused by insertional mutagenesis have been generated. There are multiple other paralogous and orthologous genes in both species.

A UAS construct of the human Hsap\HRAS gene carrying a variant implicated in Costello syndrome has been introduced into flies. Variant(s) implicated in human disease tested (as transgenic human gene, HRAS): the G12S variant form has been introduced into flies. Experiments using this variant include assessments of pharmaceutical candidates.

See also the human disease model report 'cancer, multiple, RAS-related' (FBhh0000474).

[updated May 2021 by FlyBase; FBrf0222196]

Disease Summary Information
Disease Summary: Costello syndrome
OMIM report

[COSTELLO SYNDROME; CSTLO](https://omim.org/entry/218040)

Human gene(s) implicated

[HRAS PROTOONCOGENE, GTPase; HRAS](https://omim.org/entry/190020)

Symptoms and phenotype

Costello syndrome is a rare multiple congenital anomaly syndrome associated in all cases with a characteristic coarse facies, short stature, distinctive hand posture and appearance, severe feeding difficulty, and failure to thrive. Other features include cardiac anomalies and developmental disability. Facial warts, particularly nasolabial, are often present in childhood (Kerr et al., 2006; pubmed:16443854). [from MIM:218040; 2021.05.08]

Genetics

Costello syndrome (CSTLO) is caused by heterozygous mutation in the HRAS gene. [from MIM:218040; 2021.05.08]

Cellular phenotype and pathology
Molecular information

The RAS proteins are members of a large superfamily of low-molecular-weight GTP-binding proteins. The RAS proteins control signaling pathways that are key regulators of several aspects of normal cell growth and malignant transformation. Three members of the RAS family, HRAS, KRAS and NRAS, are found to be activated by mutation in human tumors. These three members are very closely related, having 85% amino acid sequence identity (Downward, 2003; pubmed:12509763).

External links
Disease synonyms
CMEMS
congenital myopathy with excess of muscle spindles
CSTLO
Ortholog Information
Human gene(s) in FlyBase
    Human gene (HGNC)
    D. melanogaster ortholog (based on DIOPT)
    Comments on ortholog(s)

    Many to many: multiple paralogs and orthologs in both species.

    Other mammalian ortholog(s) used
      D. melanogaster Gene Information (1)
      Gene Snapshot
      Ras oncogene at 85D (Ras85D) encodes a protein that acts downstream of several cell signals, most notably from Receptor Tyrosine Kinases, to regulate tissue growth and development. When abnormally activated it can direct developmental defects and tissue hyperplasia, mimicking aspects of human disease including Rasopathies and cancer, respectively. [Date last reviewed: 2019-03-14]
      Cellular component (GO)
      Gene Groups / Pathways
      Comments on ortholog(s)

      High-scoring ortholog of human genes KRAS, HRAS, and NRAS (many to many; multiple paralogs and orthologs in both species). Dmel\Ras85D shares 78-86% identity and 86-92% similarity with KRAS, HRAS, and NRAS; for these three human genes, Ras85D is the highest-scoring ortholog in Drosophila.

      Orthologs and Alignments from DRSC
      DIOPT - DRSC Integrative Ortholog Prediction Tool - Click the link below to search for orthologs in Humans
      Other Genes Used: Viral, Bacterial, Synthetic (0)
        Summary of Physical Interactions (28 groups)
        protein-protein
        Interacting group
        Assay
        References
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        two hybrid, anti tag coimmunoprecipitation, autoradiography
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        gtpase assay, autoradiography
        anti tag coimmunoprecipitation, peptide massfingerprinting
        two hybrid, pull down, western blot
        anti tag coimmunoprecipitation, peptide massfingerprinting
        pull down, two hybrid, anti tag coimmunoprecipitation, anti tag western blot
        pull down, anti tag western blot
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, Identification by mass spectrometry, pull down, covalent binding, western blot
        Alleles Reported to Model Human Disease (Disease Ontology) (25 alleles)
        Models Based on Experimental Evidence ( 16 )
        Allele
        Disease
        Evidence
        References
        model of  cancer
        Modifiers Based on Experimental Evidence ( 17 )
        Allele
        Disease
        Interaction
        References
        model of  cancer
        is ameliorated by NetBΔ
        is ameliorated by NetBKK103672
        is ameliorated by InRGL00139
        is ameliorated by InRJF01183
        is ameliorated by InRJF01482
        is ameliorated by unc-5MI04273
        is ameliorated by TimpUAS.cPa
        is ameliorated by bskDN.UAS
        is ameliorated by bskHMS00777
        is exacerbated by hepAct.UAS
        is exacerbated by imdUAS.cGa
        is ameliorated by JraNIG.2275R
        ameliorates  cancer
        model of  kidney cancer
        is ameliorated by Pka-C1B3
        is ameliorated by mTorΔP
        model of  cancer
        is exacerbated by exe1
        is exacerbated by Ptp61FΔ
        is exacerbated by M6W186stop
        is ameliorated by Ptip3804
        is exacerbated by p53UAS.cUa
        is ameliorated by Ilp8MI00727
        Alleles Representing Disease-Implicated Variants
        Genetic Tools, Stocks and Reagents
        Sources of Stocks
        Contact lab of origin for a reagent not available from a public stock center.
        Bloomington Stock Center Disease Page
        Related mammalian, viral, bacterial, or synthetic transgenes
        Allele
        Transgene
        Publicly Available Stocks
        Selected Drosophila transgenes
        Allele
        Transgene
        Publicly Available Stocks
        RNAi constructs available
        Allele
        Transgene
        Publicly Available Stocks
        Selected Drosophila classical alleles
        Allele
        Allele class
        Mutagen
        Publicly Available Stocks
        loss of function allele
        loss of function allele
        P-element activity
        amorphic allele - genetic evidence
        References (5)