FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Human Disease Model Report: cancer, epithelial, Notch signaling, Hedgehog signaling
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General Information
Name
cancer, epithelial, Notch signaling, Hedgehog signaling
FlyBase ID
FBhh0001075
Disease Ontology Term
Parent Disease
OMIM
Overview

Much of the work in flies investigating the role of the Notch pathway in development of cancer has involved combining Notch signaling dysregulation with other genes postulated to have a role in tumorigenesis. This is typically achieved by using targeted expression of an activated form of Notch (N) or overexpression of one of the Notch ligands, Delta (Dl) or Serrate (Ser); see the human disease model report 'cancer, multiple, Notch signaling pathway' (FBhh0000766).

Overexpression of Dl in the adult eye results in a mild overgrowth phenotype; mutations of interacting genes have been identified that enhance this phenotype and result in much increased, tumorous overgrowth. In one such screen, assessing genes in a gain-of-expression system, the microRNA mir-7 was identified; Dmel\mir-7 is orthologous to human microRNAs MIR7-1 MIR7-2, MIR7-3. Knockdowns of predicted mir-7 target genes were then tested in the same assay; of the 39 genes tested, only downregulation ihog via RNAi fully mimicked the effect of mir-7 overexpression, i.e., the transformation of Dl-induced mild overgrowth into severe overgrowth or tumor-like growth.

Since ihog is a core component of the Hedgehog Signaling Pathway (FBgg0000979), other members of this pathway were tested. Tumorigenesis was induced co-operatively following Notch activation (via Dl overexpression) combined with reduced Hedgehog signalling effected by different mechanisms: overexpression of the mir-7 microRNA; or down-regulation of ihog, hh, smo, or ci; or overexpression of the ci repressor form.

See also the human disease model report 'basal cell carcinoma, SMO-related' (FBhh0001201).

[updated Feb. 2020 by FlyBase; FBrf0222196]

Disease Summary Information
Disease Summary: cancer, epithelial, Notch signaling, Hedgehog signaling
OMIM report
Human gene(s) implicated
Symptoms and phenotype
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 (6)
      Gene Snapshot
      Delta (Delta) encodes a single pass transmembrane EGF family protein and one of two ligands of the Notch signaling pathway. It regulates cell fate decisions and cell proliferation. Post transcriptional modification (such as by fucosylation, ubiquitination and proteolysis) of the product of Delta is key for its functions. [Date last reviewed: 2019-03-07]
      Gene Groups / Pathways
      Comments on ortholog(s)

      Moderate- to high-scoring ortholog of human DLL1 and DLL4 (1 Drosophila to 2 human); additional less closely related genes in human.

      Orthologs and Alignments from DRSC
      DIOPT - DRSC Integrative Ortholog Prediction Tool - Click the link below to search for orthologs in Humans
      Gene Snapshot
      interference hedgehog (ihog) encodes a type 1 membrane protein that acts as a co-receptor for the product of hh upstream or at the level of the receptor encoded by ptc. It interacts with the products of disp, dlp, dally and shf. It is involved in imaginal pattern formation and embryonic cuticle pattern formation. [Date last reviewed: 2018-11-15]
      Gene Groups / Pathways
      Comments on ortholog(s)

      Moderate-scoring ortholog of human BOC and CDON (2 human to 2 Drosophila); the other Drosophila gene is boi.

      Orthologs and Alignments from DRSC
      DIOPT - DRSC Integrative Ortholog Prediction Tool - Click the link below to search for orthologs in Humans
      Gene Snapshot
      hedgehog (hh) encodes the Hh signaling pathway ligand. It acts as a morphogen contributing to segment polarity determination, stem cells maintenance and cell migration. Post-translational modifications of the product of hh are essential for its restrictive spreading and signaling activity. [Date last reviewed: 2019-03-07]
      Gene Groups / Pathways
      Comments on ortholog(s)

      High-scoring ortholog of human SHH, DHH, and IHH (3 human to 1 Drosophila).

      Orthologs and Alignments from DRSC
      DIOPT - DRSC Integrative Ortholog Prediction Tool - Click the link below to search for orthologs in Humans
      Gene Snapshot
      smoothened (smo) encodes a critical component of the Hedgehog signaling pathway. It is regulated by phosphorylation, dimerization, and cell-surface accumulation upon Hedgehog stimulation. The product of smo is also regulated by ubiquitin and other small molecules such as phospholipids. [Date last reviewed: 2019-03-14]
      Gene Groups / Pathways
      Comments on ortholog(s)

      High-scoring ortholog of human SMO (1 human to 1 Drosophila).

      Orthologs and Alignments from DRSC
      DIOPT - DRSC Integrative Ortholog Prediction Tool - Click the link below to search for orthologs in Humans
      Gene Snapshot
      cubitus interruptus (ci) encodes a Zn-finger family of transcription factor. It contributes to Hedgehog (Hh) signaling pathway that is involved in pattern formation and growth control. The product of ci undergoes limited proteolysis to be converted into a truncated form that function as a transcription repressor in the absence of the ligand encoded by hh but is converted into a full-length transcription activator in the presence of the product of hh. [Date last reviewed: 2019-03-07]
      Gene Groups / Pathways
      Comments on ortholog(s)

      High-scoring ortholog of human GLI3 and GLI2; moderate-scoring ortholog of GLI1 (3 human to 1 Drosophila).

      Orthologs and Alignments from DRSC
      DIOPT - DRSC Integrative Ortholog Prediction Tool - Click the link below to search for orthologs in Humans
      Cellular component (GO)
      Gene Groups / Pathways
      Comments on ortholog(s)

      Orthologous to human MIR7-1 MIR7-2, MIR7-3 (FBrf0242402 and miRBase).

      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 (131 groups)
        RNA-RNA
        Interacting group
        Assay
        References
        luminiscence technology, immunohistochemistry
        protein-protein
        Interacting group
        Assay
        References
        atomic force microscopy, bead aggregation assay, fluorescence microscopy, inferred by author
        protease assay, western blot, inferred by author
        enzymatic study, anti tag coimmunoprecipitation, anti tag western blot
        affinity technology, inferred by author, bead aggregation assay, fluorescence microscopy, enzyme linked immunosorbent assay, anti bait coimmunoprecipitation, western blot, tag visualisation, phenotype-based detection assay, cross-linking study, pull down, tag visualisation by alkaline phosphatase activity, atomic force microscopy
        anti tag coimmunoprecipitation, anti tag western blot, pull down, western blot, anti bait coimmunoprecipitation, enzymatic study
        anti tag coimmunoprecipitation, anti tag western blot
        anti bait coimmunoprecipitation, western blot, anti tag coimmunoprecipitation, coimmunoprecipitation, affinity technology, fluorescence microscopy
        RNA-RNA
        Interacting group
        Assay
        References
        quantitative reverse transcription pcr, luminiscence technology, necessary binding region, fluorescence technology
        protein-protein
        Interacting group
        Assay
        References
        cosedimentation, predetermined participant, molecular sieving, anti tag coimmunoprecipitation, anti tag western blot, bimolecular fluorescence complementation, fluorescence microscopy
        anti tag coimmunoprecipitation, anti tag western blot, Identification by mass spectrometry
        colocalization, fluorescence microscopy, inferred by author
        colocalization, fluorescence microscopy, inferred by author
        x-ray crystallography, predetermined participant, pull down, anti tag western blot, affinity technology, inferred by author, tag visualisation, molecular sieving, molecular weight estimation by staining, anti bait coimmunoprecipitation, western blot, colocalization, fluorescence microscopy, cosedimentation, surface plasmon resonance
        anti tag coimmunoprecipitation, anti tag western blot
        anti bait coimmunoprecipitation, western blot, anti tag western blot
        anti tag coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, anti tag western blot
        enzyme linked immunosorbent assay
        protein-protein
        Interacting group
        Assay
        References
        molecular sieving, molecular weight, anti tag coimmunoprecipitation, western blot, molecular weight estimation by staining
        cosedimentation, anti tag western blot, anti bait coimmunoprecipitation, western blot
        anti bait coimmunoprecipitation, western blot
        pull down, western blot, anti tag western blot
        anti bait coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, western blot
        anti bait coimmunoprecipitation, anti tag western blot, electron microscopy, microscale thermophoresis
        anti bait coimmunoprecipitation, anti tag western blot, anti tag coimmunoprecipitation, western blot
        cosedimentation, western blot
        x-ray crystallography, predetermined participant, pull down, anti tag western blot, affinity technology, inferred by author, tag visualisation, molecular sieving, molecular weight estimation by staining, anti bait coimmunoprecipitation, western blot, colocalization, fluorescence microscopy, cosedimentation, surface plasmon resonance
        pull down, anti tag western blot, anti bait coimmunoprecipitation, western blot, affinity technology, fluorescence microscopy, inferred by author, tag visualisation, cross-linking study
        anti tag coimmunoprecipitation, western blot
        enzymatic study, autoradiography
        anti tag coimmunoprecipitation, western blot
        cosedimentation, western blot
        protein-protein
        Interacting group
        Assay
        References
        pull down, anti tag western blot, fluorescent resonance energy transfer, fluorescence microscopy, autoradiography, anti bait coimmunoprecipitation, western blot, anti tag coimmunoprecipitation, bioluminescence resonance energy transfer, fluorescence technology
        anti bait coimmunoprecipitation, western blot, peptide massfingerprinting
        anti tag coimmunoprecipitation, western blot, fluorescent resonance energy transfer, anti bait coimmunoprecipitation, tag visualisation, colocalization, fluorescence microscopy, inferred by author, anti tag western blot, pull down, peptide massfingerprinting, bioluminescence resonance energy transfer, fluorescence technology, two hybrid
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, western blot
        anti bait coimmunoprecipitation, western blot, bimolecular fluorescence complementation, fluorescence microscopy, anti tag coimmunoprecipitation, anti tag western blot, colocalization, inferred by author, two hybrid, peptide massfingerprinting
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot, fluorescent resonance energy transfer, fluorescence microscopy, pull down
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot, pull down, western blot
        anti tag coimmunoprecipitation, anti tag western blot, western blot
        anti tag coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, western blot, bimolecular fluorescence complementation, fluorescence microscopy, anti tag western blot, anti bait coimmunoprecipitation
        anti tag coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, anti tag western blot, pull down
        anti tag coimmunoprecipitation, western blot, anti bait coimmunoprecipitation
        anti tag coimmunoprecipitation, anti tag western blot
        colocalization, fluorescence microscopy, inferred by author, anti tag coimmunoprecipitation, anti tag western blot, pull down, molecular weight estimation by staining, two hybrid, x-ray crystallography, isothermal titration calorimetry, predetermined participant
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot
        anti bait coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, covalent binding, anti tag western blot
        anti tag coimmunoprecipitation, covalent binding, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot, anti bait coimmunoprecipitation
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot, pull down
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, western blot, pull down
        RNA-RNA
        Interacting group
        Assay
        References
        fluorescence technology, luminiscence technology, necessary binding region, immunohistochemistry
        luminiscence technology, necessary binding region, fluorescence technology, immunocytochemistry
        protein-protein
        Interacting group
        Assay
        References
        anti tag coimmunoprecipitation, anti tag western blot, fluorescent resonance energy transfer, fluorescence microscopy
        anti tag coimmunoprecipitation, peptide massfingerprinting
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot
        pull down, autoradiography, anti bait coimmunoprecipitation, western blot, anti tag coimmunoprecipitation, anti tag western blot, two hybrid, colocalization, fluorescence microscopy, inferred by author, molecular sieving, peptide massfingerprinting
        anti tag coimmunoprecipitation, anti tag western blot
        enzymatic study, peptide massfingerprinting, pull down, anti tag western blot
        enzymatic study, peptide massfingerprinting
        two hybrid, pull down, autoradiography, anti bait coimmunoprecipitation, anti tag western blot, anti tag coimmunoprecipitation
        enzymatic study, autoradiography, interologs mapping, inferred by curator
        enzymatic study, western blot
        protein three hybrid, anti bait coimmunoprecipitation, western blot, enzymatic study, molecular sieving, anti tag coimmunoprecipitation, anti tag western blot, two hybrid
        pull down, anti tag western blot, anti tag coimmunoprecipitation, two hybrid
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot
        coimmunoprecipitation, western blot
        pull down, autoradiography
        anti tag coimmunoprecipitation, anti tag western blot, two hybrid
        anti tag coimmunoprecipitation, anti tag western blot
        pull down, western blot
        anti tag coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, anti tag western blot, two hybrid, lambda phage display, pull down, molecular weight estimation by staining
        pull down, western blot
        anti tag coimmunoprecipitation, anti tag western blot, bimolecular fluorescence complementation, fluorescence microscopy
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot
        anti bait coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, western blot, anti bait coimmunoprecipitation, anti tag western blot, pull down
        two hybrid, pull down, western blot, anti tag coimmunoprecipitation, anti tag western blot, enzymatic study, peptide massfingerprinting
        anti tag coimmunoprecipitation, anti tag western blot
        anti tag coimmunoprecipitation, anti tag western blot
        pull down, anti tag western blot
        pull down, anti tag western blot, enzymatic study, peptide massfingerprinting, autoradiography
        anti bait coimmunoprecipitation, western blot, peptide massfingerprinting
        anti tag coimmunoprecipitation, anti tag western blot, pull down, Identification by mass spectrometry
        anti tag coimmunoprecipitation, anti tag western blot
        fluorescent resonance energy transfer, fluorescence microscopy, pull down, autoradiography, western blot, two hybrid, molecular sieving, anti bait coimmunoprecipitation, anti tag coimmunoprecipitation, anti tag western blot, isothermal titration calorimetry, predetermined participant
        pull down, western blot
        anti bait coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, anti tag western blot, electrophoretic mobility shift assay
        anti tag coimmunoprecipitation, anti tag western blot, pull down
        anti tag coimmunoprecipitation, western blot
        anti tag coimmunoprecipitation, anti tag western blot, pull down
        anti tag coimmunoprecipitation, anti tag western blot
        RNA-RNA
        Interacting group
        Assay
        References
        immunohistochemistry, fluorescence technology, necessary binding region
        anti tag western blot, fluorescence technology
        fluorescence technology
        fluorescence technology, necessary binding region
        luminiscence technology, necessary binding region
        fluorescence technology, necessary binding region, luminiscence technology
        fluorescence technology
        fluorescence technology
        luminiscence technology
        northern blot, fluorescence technology, full identification by RNA sequencing
        quantitative reverse transcription pcr, luminiscence technology, necessary binding region, fluorescence technology
        fluorescence technology
        immunohistochemistry
        luminiscence technology
        RNA-protein
        Interacting group
        Assay
        References
        anti tag coimmunoprecipitation, quantitative reverse transcription pcr, pull down, western blot
        pull down, western blot
        Alleles Reported to Model Human Disease (Disease Ontology) (20 alleles)
        Models Based on Experimental Evidence ( 2 )
        Modifiers Based on Experimental Evidence ( 9 )
        Allele
        Disease
        Interaction
        References
        ameliorates  brain cancer
        DOES NOT ameliorate  cancer
        ameliorates  cancer
        Models Based on Experimental Evidence ( 1 )
        Allele
        Disease
        Evidence
        References
        Modifiers Based on Experimental Evidence ( 4 )
        Models Based on Experimental Evidence ( 1 )
        Allele
        Disease
        Evidence
        References
        Modifiers Based on Experimental Evidence ( 1 )
        Allele
        Disease
        Interaction
        References
        Models Based on Experimental Evidence ( 2 )
        Modifiers Based on Experimental Evidence ( 3 )
        Allele
        Disease
        Interaction
        References
        DOES NOT ameliorate  cancer
        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
        ethyl methanesulfonate
        amorphic allele - molecular evidence
        FLPase
        amorphic allele - molecular evidence
        ends-out gene targeting
        P-element activity
        Delta2-3 transposase
        amorphic allele - molecular evidence
        CRISPR/Cas9
        amorphic allele - genetic evidence
        X ray
        amorphic allele - genetic evidence
        ethyl methanesulfonate
        amorphic allele - genetic evidence
        ethyl methanesulfonate
        amorphic allele - genetic evidence
        ethyl methanesulfonate
        amorphic allele - genetic evidence
        ethyl methanesulfonate
        loss of function allele
        spontaneous
        loss of function allele
        X ray
        amorphic allele - genetic evidence
        ethyl methanesulfonate
        loss of function allele
        spontaneous
        amorphic allele - genetic evidence
        loss of function allele
        ethyl methanesulfonate
        loss of function allele
        ethyl methanesulfonate
        amorphic allele - genetic evidence
        ethyl methanesulfonate
        amorphic allele - genetic evidence
        X ray
        amorphic allele - genetic evidence
        ethyl methanesulfonate
        amorphic allele - genetic evidence
        X ray
        amorphic allele - genetic evidence
        X ray
        loss of function allele
        ethyl methanesulfonate
        loss of function allele
        spontaneous
        loss of function allele
        Delta2-3 transposase
        loss of function allele
        gamma ray
        loss of function allele
        X ray
        loss of function allele
        Delta2-3 transposase
        loss of function allele
        CRISPR/Cas9
        loss of function allele
        CRISPR/Cas9
        loss of function allele
        CRISPR/Cas9
        loss of function allele
        CRISPR/Cas9
        loss of function allele
        CRISPR/Cas9
        loss of function allele
        CRISPR/Cas9
        P-element activity
        loss of function allele
        Delta2-3 transposase
        amorphic allele - genetic evidence
        Delta2-3 transposase
        amorphic allele - genetic evidence
        Delta2-3 transposase
        loss of function allele
        Delta2-3 transposase
        amorphic allele - genetic evidence
        gamma ray
        ethyl methanesulfonate
        amorphic allele - genetic evidence
        gamma ray
        loss of function allele
        ethyl methanesulfonate
        amorphic allele - genetic evidence
        ethyl methanesulfonate
        loss of function allele
        ethyl methanesulfonate
        loss of function allele
        CRISPR/Cas9
        References (6)