FB2026_02 , released June 18, 2026
Human Disease Model Report: cardiac dysfunction, tumor-induced
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General Information
Name
cardiac dysfunction, tumor-induced
FlyBase ID
FBhh0001386
Disease Ontology Term
Parent Disease
OMIM
Overview

Experiments designed to assess if localized tumors can systemically affect heart function have been performed in Drosophila, using imaginal-disc-specific expression of oncogenic alleles of Ras85D and Pi3K92E, or eye-specific overexpression of yki. Although all three are observed to impact heart function, specific effects vary; cardiac phenotypes indicative of cachexia are not observed. The yki model was characterized further; although yki overexpression in the eye results in hyperplastic overgrowth specifically in the eye, in 3-5 day-old flies compromised cardiac function is observed. The cardiac phenotypes can be rescued by feeding of antioxidants, supporting the hypothesis that yki-induced tumor-like overgrowth causes a systemic increase in ROS, affecting cardiac function. It is hypothesized that cardiac dysfunction precedes changes associated with cachexia.

yki encodes a transcriptional co-activator protein that is negatively regulated by Hippo signaling (see the Human Disease Model report 'cancer, multiple, Hippo signaling pathway', FBhh0000764). Overexpression of an activated form of yki in the developing eye has been used to model cachexia in flies; see the Human Disease Model report 'cachexia, yki-induced eye tumor model' (FBhh0001322).

[updated Sep. 2021 by FlyBase; FBrf0222196]

Disease Summary Information
Disease Summary: cardiac dysfunction, tumor-induced
OMIM report
Human gene(s) implicated
Symptoms and phenotype

Many cancer patients undergo heart-related complications resulting in high incidences of mortality. It is generally hypothesized that cardiac dysfunction in cancer patients occurs due to cardiotoxicity induced by therapeutic agents, used to treat cancers and/or cancer-induced cachexia. It is not known if localized tumors or unregulated cell growth systemically affect heart function before treatment, and/or prior to the onset of cachexia (FBrf0250374).

Genetics
Cellular phenotype and pathology
Molecular information
External links
    Disease synonyms
    Ortholog Information
    Human gene(s) in FlyBase
      Other mammalian ortholog(s) used
        D. melanogaster Gene Information (1)
        Gene Snapshot
        yorkie (yki) encodes a transcriptional co-activator protein that is negatively regulated by Hippo signaling, which promotes its cytoplasmic localization. It functions together with DNA binding proteins, such as the product of sd, to activate transcription of a wide range of downstream targets, including genes that promote growth. [Date last reviewed: 2019-03-21]
        Gene Groups / Pathways
        Comments on ortholog(s)

        Moderate-scoring ortholog of human YAP1; lower-scoring ortholog of WWTR1 (1 Drosophila to 2 human). Dmel\yki shares 31% identity and 45% similarity with YAP1; it shares 25% identity and 34% similarity with WWTR1.

        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 (83 groups)
          RNA-RNA
          Interacting group
          Assay
          References
          luminiscence technology
          fluorescence technology
          RNA-protein
          Interacting group
          Assay
          References
          anti tag coimmunoprecipitation, quantitative reverse transcription pcr
          protein-protein
          Interacting group
          Assay
          References
          anti tag coimmunoprecipitation, anti tag western blot, peptide massfingerprinting, protein complementation assay
          anti tag coimmunoprecipitation, peptide massfingerprinting, anti tag western blot, western blot
          anti tag coimmunoprecipitation, western blot, anti tag western blot, pull down, peptide massfingerprinting
          enzymatic study, western blot
          anti tag coimmunoprecipitation, peptide massfingerprinting
          anti bait coimmunoprecipitation, peptide massfingerprinting
          pull down, Identification by mass spectrometry, anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot, anti bait coimmunoprecipitation, peptide massfingerprinting
          anti tag coimmunoprecipitation, Identification by mass spectrometry, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, peptide massfingerprinting
          anti tag coimmunoprecipitation, western blot, anti tag western blot
          enzymatic study, western blot
          anti tag coimmunoprecipitation, anti tag western blot, peptide massfingerprinting
          anti tag coimmunoprecipitation, anti tag western blot, 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 western blot
          anti tag coimmunoprecipitation, anti tag western blot, peptide massfingerprinting
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, tag visualisation
          coimmunoprecipitation, western blot
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, western blot, proximity ligation assay, fluorescence microscopy
          anti tag coimmunoprecipitation, peptide massfingerprinting, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot, anti bait coimmunoprecipitation, peptide massfingerprinting, pull down, western blot, Identification by mass spectrometry
          anti tag coimmunoprecipitation, anti tag western blot, pull down, anti bait coimmunoprecipitation, western blot
          pull down, peptide massfingerprinting
          anti tag coimmunoprecipitation, peptide massfingerprinting
          enzymatic study, autoradiography, anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot, peptide massfingerprinting
          proximity ligation assay, fluorescence microscopy, anti tag coimmunoprecipitation, peptide massfingerprinting, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, peptide massfingerprinting
          anti tag coimmunoprecipitation, peptide massfingerprinting
          anti tag coimmunoprecipitation, anti tag western blot, pull down, peptide massfingerprinting
          anti tag coimmunoprecipitation, peptide massfingerprinting
          anti tag coimmunoprecipitation, peptide massfingerprinting, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot, western blot
          anti tag coimmunoprecipitation, anti tag western blot
          anti bait coimmunoprecipitation, peptide massfingerprinting
          anti bait coimmunoprecipitation, peptide massfingerprinting
          anti bait coimmunoprecipitation, peptide massfingerprinting
          anti bait coimmunoprecipitation, peptide massfingerprinting
          anti bait coimmunoprecipitation, peptide massfingerprinting
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot, peptide massfingerprinting, tandem affinity purification, Identification by mass spectrometry, pull down
          anti tag coimmunoprecipitation, anti tag western blot, pull down, anti bait coimmunoprecipitation, peptide massfingerprinting, western blot
          proximity ligation assay, fluorescence microscopy
          anti tag coimmunoprecipitation, anti tag western blot, pull down, western blot
          anti tag coimmunoprecipitation, anti tag western blot, peptide massfingerprinting, experimental knowledge based
          anti bait coimmunoprecipitation, peptide massfingerprinting
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot, anti bait coimmunoprecipitation, western blot
          pull down, peptide massfingerprinting
          anti tag coimmunoprecipitation, peptide massfingerprinting
          enzymatic study, autoradiography
          anti tag coimmunoprecipitation, western blot, anti tag western blot
          anti tag coimmunoprecipitation, peptide massfingerprinting
          anti bait coimmunoprecipitation, anti tag western blot, anti tag coimmunoprecipitation
          anti tag coimmunoprecipitation, peptide massfingerprinting
          experimental knowledge based
          anti tag coimmunoprecipitation, anti tag western blot, two hybrid, pull down, autoradiography, surface plasmon resonance, predetermined participant, anti bait coimmunoprecipitation, peptide massfingerprinting, western blot, fluorescent resonance energy transfer
          anti tag coimmunoprecipitation, peptide massfingerprinting, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot
          proximity ligation assay, fluorescence microscopy
          coimmunoprecipitation, anti tag western blot, anti tag coimmunoprecipitation, peptide massfingerprinting
          molecular sieving, molecular weight, pull down, anti tag western blot, anti tag coimmunoprecipitation, peptide massfingerprinting, Identification by mass spectrometry, isothermal titration calorimetry, predetermined participant, nuclear magnetic resonance, two hybrid
          anti tag coimmunoprecipitation, anti tag western blot, anti bait coimmunoprecipitation, western blot, pull down, peptide massfingerprinting
          pull down, western blot
          anti tag coimmunoprecipitation, western blot, bimolecular fluorescence complementation, fluorescence microscopy, proximity ligation assay
          anti tag coimmunoprecipitation, anti tag western blot, pull down, western blot
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot, pull down, peptide massfingerprinting
          anti tag coimmunoprecipitation, anti tag western blot, peptide massfingerprinting, enzymatic study, western blot, pull down, two hybrid, autoradiography
          Alleles Reported to Model Human Disease (Disease Ontology) (23 alleles)
          Models Based on Experimental Evidence ( 15 )
          Allele
          Disease
          Evidence
          References
          Modifiers Based on Experimental Evidence ( 19 )
          Allele
          Disease
          Interaction
          References
          model of  cancer
          is ameliorated by lzUAS.cBa
          is exacerbated by trioUAS.cUa
          model of  cancer
          is exacerbated by HisRSKK102374
          is ameliorated by AlaRSGD8009
          is exacerbated by ArgRSGD14098
          is exacerbated by LysRSKK101852
          is ameliorated by AsnRSGD7064
          is ameliorated by AsnRSKK100240
          is exacerbated by ThrRSGD1342
          is exacerbated by TyrRSGD11353
          is ameliorated by AspRSGD1339
          is exacerbated by CysRSGD13923
          is exacerbated by GlnRSKK109443
          is ameliorated by GlyRSKK107421
          is ameliorated by Ilp8MI00727
          is ameliorated by ImpL2GD6004
          is ameliorated by Lgr3Δ50
          is ameliorated by Ilp8KK112161
          exacerbates  carcinoma
          model of  cancer
          is ameliorated by AktHMS00007
          is ameliorated by foxoTM.UAS
          is ameliorated by panΔN.UAS
          is ameliorated by wgHMS00794
          is ameliorated by wgJF01257
          is ameliorated by ITPGD3825
          is ameliorated by ITPJF01817
          is ameliorated by ImpL2HMC05809
          is ameliorated by upd3HMS00646
          is ameliorated by domeGD2612
          is ameliorated by hopHMS00761
          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
          References (4)