PUBLICATION

Puma, noxa, p53, and p63 differentially mediate stress pathway induced apoptosis

Authors
Wang, J., Thomas, H.R., Li, Z., Yeo, N.C.F., Scott, H.E., Dang, N., Hossain, M.I., Andrabi, S.A., Parant, J.M.
ID
ZDB-PUB-210702-5
Date
2021
Source
Cell Death & Disease   12: 659 (Journal)
Registered Authors
Parant, John, Thomas, Holly R.
Keywords
none
MeSH Terms
  • Tumor Suppressor Protein p53/genetics
  • Tumor Suppressor Protein p53/metabolism*
  • Phosphoproteins/genetics
  • Phosphoproteins/metabolism*
  • Proto-Oncogene Proteins c-bcl-2/genetics
  • Proto-Oncogene Proteins c-bcl-2/metabolism*
  • Animals, Genetically Modified
  • Proto-Oncogene Proteins c-mdm2/genetics
  • Proto-Oncogene Proteins c-mdm2/metabolism
  • Endoplasmic Reticulum Stress*/drug effects
  • Gene Expression Regulation
  • Tetradecanoylphorbol Acetate/pharmacology
  • Time Factors
  • Transcription, Genetic
  • Apoptosis Regulatory Proteins/genetics
  • Apoptosis Regulatory Proteins/metabolism*
  • Signal Transduction
  • Zebrafish Proteins/genetics
  • Zebrafish Proteins/metabolism*
  • Oxidative Stress*/drug effects
  • Apoptosis*/drug effects
  • Apoptosis*/radiation effects
  • Proto-Oncogene Proteins/genetics
  • Proto-Oncogene Proteins/metabolism*
  • Thapsigargin/pharmacology
  • Animals
  • DNA Damage*
  • X-Rays
  • Zebrafish/genetics
  • Trans-Activators/genetics
  • Trans-Activators/metabolism*
  • Macrolides/pharmacology
(all 32)
PubMed
34193827 Full text @ Cell Death Dis.
Abstract
Cellular stress can lead to several human disease pathologies due to aberrant cell death. The p53 family (tp53, tp63, and tp73) and downstream transcriptional apoptotic target genes (PUMA/BBC3 and NOXA/PMAIP1) have been implicated as mediators of stress signals. To evaluate the importance of key stress response components in vivo, we have generated zebrafish null alleles in puma, noxa, p53, p63, and p73. Utilizing these genetic mutants, we have deciphered that the apoptotic response to genotoxic stress requires p53 and puma, but not p63, p73, or noxa. We also identified a delayed secondary wave of genotoxic stress-induced apoptosis that is p53/puma independent. Contrary to genotoxic stress, ER stress-induced apoptosis requires p63 and puma, but not p53, p73, or noxa. Lastly, the oxidative stress-induced apoptotic response requires p63, and both noxa and puma. Our data also indicate that while the neural tube is poised for apoptosis due to genotoxic stress, the epidermis is poised for apoptosis due to ER and oxidative stress. These data indicate there are convergent as well as unique molecular pathways involved in the different stress responses. The commonality of puma in these stress pathways, and the lack of gross or tumorigenic phenotypes with puma loss suggest that a inhibitor of Puma may have therapeutic application. In addition, we have also generated a knockout of the negative regulator of p53, mdm2 to further evaluate the p53-induced apoptosis. Our data indicate that the p53 null allele completely rescues the mdm2 null lethality, while the puma null completely rescues the mdm2 null apoptosis but only partially rescues the phenotype. Indicating Puma is the key mediator of p53-dependent apoptosis. Interestingly the p53 homozygous null zebrafish develop tumors faster than the previously described p53 homozygous missense mutant zebrafish, suggesting the missense allele may be hypomorphic allele.
Genes / Markers
Figures
Figure Gallery (8 images)
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Expression
Phenotype
Mutations / Transgenics
Allele Construct Type Affected Genomic Region
uab4
    Small Deletion
    uab5
      Indel
      uab6
        Insertion
        uab7
          Insertion
          uab8
            Small Deletion
            uab9
              Small Deletion
              1 - 6 of 6
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              Human Disease / Model
              No data available
              Sequence Targeting Reagents
              Target Reagent Reagent Type
              bbc3TALEN2-bbc3TALEN
              mdm2TALEN2-mdm2TALEN
              pmaip1TALEN2-pmaip1TALEN
              tp53CRISPR13-tp53CRISPR
              tp73CRISPR1-tp73CRISPR
              1 - 5 of 5
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              Fish
              Antibodies
              Orthology
              Engineered Foreign Genes
              No data available
              Mapping