Abstract
A dual approach to the study of poly (ADP-ribose)polymerase (PARP) in terms of its structure and function has been developed in our laboratory. Random mutagenesis of the DNA binding domain and catalytic domain of the human PARP, has allowed us to identify residues that are crucial for its enzymatic activity. In parallel PARP knock-out mice were generated by inactivation of both alleles by gene targeting. We showed that: (i) they are exquisitely sensitive to gamma-irradiation, (ii) they died rapidly from acute radiation toxicity to the small intestine, (iii) they displayed a high genomic instability to gamma-irradiation and MNU injection and, (iv) bone marrow cells rapidly underwent apoptosis following MNU treatment, demonstrating that PARP is a survival factor playing an essential and positive role during DNA damage recovery and survival.
MeSH Terms
Age Factors
Animals
Apoptosis
Body Weight
Catalysis
Escherichia coli/genetics
Humans
Mice
Mice, Knockout
Models, Genetic
Models, Molecular
Mutagenesis
Poly(ADP-ribose) Polymerases/genetics
Sister Chromatid Exchange
Chemicals
Poly(ADP-ribose) Polymerases
Authors & Affiliations
10 authors, click to expand affiliations / ORCID
Trucco C
Ecole Supérieure de Biotechnologie de Strasbourg, UPR 9003 du Centre National de la Recherche Scientifique Cancérogénèse et Mutagénèse Moléculaire et Structurale, Illkirch-Graffenstaden, France.
Rolli V
Oliver F J
Flatter E
Masson M
Dantzer F
Niedergang C
Dutrillaux B
Ménissier-de Murcia J
de Murcia G
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