FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Human Disease Model Report: cancer, epithelial, RAS-PAXIP1/TP53-related
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General Information
Name
cancer, epithelial, RAS-PAXIP1/TP53-related
FlyBase ID
FBhh0001353
Disease Ontology Term
Parent Disease
OMIM
Overview

Suppressors of a hyperplastic Drosophila Ras85DV12 phenotype were isolated using Ras85DV12 clones in the developing eye. An amorphic allele of Ptip was isolated in this screen. Although loss of Ptip expression suppresses growth in a cell-intrinsic manner, it was found to cooperate with oncogenic Ras85D to promote overgrowth of the surrounding tissue. It was determined that the nonautonomous effects of Ptip are mediated by Dmel\p53. Direct overexpression of wild-type p53 in clones of Ras85DV12 cells is sufficient to trigger the overgrowth of the surrounding wild-type tissue, mimicking Ras85DV12 Ptip-null clones. The ability of p53 to drive nonautonomous tissue overgrowth requires oncogenic Ras85D; overexpression of p53 alone fails to generate a similar effect.

Ras85DV12 is a constitutively activated form that has been used extensively in Drosophila models of cancer; see the human disease model report 'cancer, multiple, RAS-related' (FBhh0000474) and related diseases. The G12V mutation in Ras85DV12 is analogous to oncogenic mutations in human KRAS, HRAS and NRAS.

Dmel\Ptip is orthologous to the human gene PAXIP1, which encodes a nuclear protein involved in DNA damage response.

Dmel\p53 is orthologous to human TP53, TP63 and TP73. Of particular interest is TP53, which has been associated with many cancer types. TP53 is a transcriptional activator involved in the response to cellular stress. See the human disease model 'cancer, multiple, TP53-related' (FBhh0000340).

[updated May 2021 by FlyBase; FBrf0222196]

Disease Summary Information
Disease Summary: cancer, epithelial, RAS-PAXIP1/TP53-related
OMIM report
Human gene(s) implicated
Symptoms and phenotype
Genetics
Cellular phenotype and pathology
Molecular information

The TP53 gene encodes a tumor suppressor protein containing transcriptional activation, DNA binding, and oligomerization domains. The encoded protein responds to diverse cellular stresses to regulate expression of target genes, thereby inducing cell cycle arrest, apoptosis, senescence, DNA repair, or changes in metabolism. Mutations in this gene are associated with a variety of human cancers. [Gene Cards, TP53, 2021.05.20]

PAXIP1 is a member of the paired box (PAX) gene family and encodes a nuclear protein involved in DNA damage response and in transcriptional regulation through histone methyltransferase (HMT) complexes. [Gene Cards, PAXIP1; 2021.05.20]

External links
Disease synonyms
Ortholog Information
Human gene(s) in FlyBase
    Human gene (HGNC)
    D. melanogaster ortholog (based on DIOPT)
    Comments on ortholog(s)

    Many to one: 3 human to 1 Drosophila; additional orthologous human genes are TP63 and TP73.

    Other mammalian ortholog(s) used
      D. melanogaster Gene Information (3)
      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
      Gene Snapshot
      p53 (p53) encodes a transcriptional factor required for adaptive responses to genotoxic stress, including cell death, compensatory proliferation and DNA repair. [Date last reviewed: 2019-03-14]
      Cellular component (GO)
      Gene Groups / Pathways
      Comments on ortholog(s)

      High-scoring ortholog of human genes TP53, TP63 and TP73 (1 Drosophila to 3 human). Dmel\p53 shares 20-24% identity and 36-41% similarity with the human genes.

      Orthologs and Alignments from DRSC
      DIOPT - DRSC Integrative Ortholog Prediction Tool - Click the link below to search for orthologs in Humans
      Gene Snapshot
      PAX transcription activation domain interacting protein (Ptip) encodes a component of a Histone H3K4 methyltransferase complex that contributes to Trithorax-mediated epigenetic imprinting during development. [Date last reviewed: 2018-11-15]
      Molecular function (GO)
        Cellular component (GO)
        Gene Groups / Pathways
        Comments on ortholog(s)

        High-scoring ortholog of human PAXIP1 (1 Drosophila to 1 human). Dmel\Ptip shares 27% identity and 41% similarity with the human gene.

        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 (199 groups)
          protein-protein
          Interacting group
          Assay
          References
          anti tag coimmunoprecipitation, peptide massfingerprinting
          anti tag coimmunoprecipitation, peptide massfingerprinting
          pull down, anti tag western blot
          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
          pull down, western blot, two hybrid
          anti tag coimmunoprecipitation, peptide massfingerprinting
          anti tag coimmunoprecipitation, anti tag western blot, two hybrid, pull down
          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
          pull down, covalent binding, western blot, anti tag coimmunoprecipitation, Identification by mass spectrometry
          protein-protein
          Interacting group
          Assay
          References
          coimmunoprecipitation, anti tag western blot, pull down, autoradiography, anti tag coimmunoprecipitation, western blot
          bimolecular fluorescence complementation, fluorescence microscopy
          pull down, autoradiography
          anti tag coimmunoprecipitation, anti tag western blot, pull down, western blot
          pull down, autoradiography
          pull down, autoradiography
          anti tag coimmunoprecipitation, peptide massfingerprinting, experimental knowledge based
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          anti tag coimmunoprecipitation, western blot
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          anti tag coimmunoprecipitation, peptide massfingerprinting, experimental knowledge based, two hybrid array
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          anti tag coimmunoprecipitation, anti tag western blot, pull down, autoradiography, western blot
          pull down, autoradiography
          pull down, autoradiography
          two hybrid, anti tag coimmunoprecipitation, western blot
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography, two hybrid
          anti tag coimmunoprecipitation, peptide massfingerprinting, experimental knowledge based
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, western blot, anti bait coimmunoprecipitation
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          anti bait coimmunoprecipitation, western blot
          pull down, autoradiography
          pull down, autoradiography
          anti tag coimmunoprecipitation, peptide massfingerprinting, experimental knowledge based
          anti bait coimmunoprecipitation, western blot, anti tag coimmunoprecipitation, peptide massfingerprinting, experimental knowledge based
          anti bait coimmunoprecipitation, western blot
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          two hybrid, pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          anti tag coimmunoprecipitation, anti tag western blot, pull down, autoradiography, anti bait coimmunoprecipitation, western blot
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          two hybrid array, bimolecular fluorescence complementation, fluorescence microscopy
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          enzymatic study, western blot
          anti tag coimmunoprecipitation, western blot
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          two hybrid, pull down, autoradiography
          pull down, autoradiography
          two hybrid, pull down, autoradiography
          anti tag coimmunoprecipitation, peptide massfingerprinting, experimental knowledge based
          pull down, autoradiography
          anti bait coimmunoprecipitation, western blot
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography
          pull down, autoradiography, two hybrid array
          pull down, autoradiography
          pull down, autoradiography
          two hybrid, pull down, autoradiography
          pull down, western blot, coimmunoprecipitation, anti tag western blot, anti tag coimmunoprecipitation
          bimolecular fluorescence complementation, fluorescence microscopy
          pull down, autoradiography
          enzymatic study, western blot
          anti bait coimmunoprecipitation, western blot
          pull down, autoradiography
          anti tag coimmunoprecipitation, anti tag western blot
          RNA-RNA
          Interacting group
          Assay
          References
          fluorescence technology, luminiscence technology
          luminiscence technology
          fluorescence technology, luminiscence technology
          luminiscence technology, fluorescence technology, necessary binding region
          luminiscence technology
          protein-protein
          Interacting group
          Assay
          References
          anti tag coimmunoprecipitation, peptide massfingerprinting
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          anti tag coimmunoprecipitation, peptide massfingerprinting
          experimental knowledge based
          experimental knowledge based
          experimental knowledge based
          anti tag coimmunoprecipitation, peptide massfingerprinting
          Alleles Reported to Model Human Disease (Disease Ontology) (51 alleles)
          Models Based on Experimental Evidence ( 17 )
          Allele
          Disease
          Evidence
          References
          model of  cancer
          Modifiers Based on Experimental Evidence ( 19 )
          Allele
          Disease
          Interaction
          References
          model of  cancer
          is exacerbated by ITPUAS.F
          model of  cancer
          is ameliorated by InRGL00139
          is ameliorated by InRJF01183
          is ameliorated by InRJF01482
          is ameliorated by NetBΔ
          is ameliorated by NetBKK103672
          is ameliorated by unc-5MI04273
          is ameliorated by TimpUAS.cPa
          is ameliorated by JraNIG.2275R
          is ameliorated by bskDN.UAS
          is ameliorated by bskHMS00777
          is exacerbated by hepAct.UAS
          is exacerbated by imdUAS.cGa
          ameliorates  cancer
          model of  kidney cancer
          is ameliorated by Pka-C1B3
          is ameliorated by mTorΔP
          model of  cancer
          is exacerbated by Ptp61FΔ
          is exacerbated by exe1
          is exacerbated by M6W186stop
          is ameliorated by Ptip3804
          is exacerbated by p53UAS.cUa
          is ameliorated by Ilp8MI00727
          is exacerbated by Clbn1Q
          exacerbates  carcinoma
          model of  carcinoma
          is exacerbated by NkapGD11807
          Models Based on Experimental Evidence ( 11 )
          Allele
          Disease
          Evidence
          References
          Modifiers Based on Experimental Evidence ( 15 )
          Allele
          Disease
          Interaction
          References
          Models Based on Experimental Evidence ( 3 )
          Modifiers Based on Experimental Evidence ( 1 )
          Allele
          Disease
          Interaction
          References
          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
          amorphic allele - genetic evidence
          ends-in gene targeting
          amorphic allele - molecular evidence
          Delta2-3 transposase
          amorphic allele - molecular evidence
          Delta2-3 transposase
          ends-in gene targeting
          loss of function allele
          loss of function allele
          piggyBac activity
          loss of function allele
          CRISPR/Cas9
          References (3)