Genetic and functional analysis of PARP, a DNA strand break-binding enzyme

Masahiro Uchida, Shuji Hanai, Naoya Uematsu, Kazunobu Sawamoto, Hideyuki Okano, Masanao Miwa, Kazuhiko Uchida

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Poly(ADP-ribose) polymerase (PARP) is a nuclear enzyme activated by binding to a single- or double-strand break of DNA and is one of the death substrates for caspase-3 in apoptosis. The nuclear function of PARP is well studied and recent PARP-knockout studies indicate that PARP takes part in chromosomal stability. To analyze the effect of PARP overexpression, or loss of function, we have cloned PARP cDNA and the gene from Drosophila melanogaster and studied its function in developmental stages. Organization of exons corresponds to the functional domains of PARP. An alternatively spliced form of PARP lacking exon 5, which encodes the auto-modification domain, is found in Drosophila. Expression of the PARP gene is at high levels in embryos at 0-6h after egg laying and gradually decreased. In situ mRNA hybridization indicates localization of PARP mRNA in cells along the central nervous system at a late stage of embryogenesis. Overexpression of the gene in the developing eye primordia of D. melanogaster is an excellent experimental model to analyze the cell cycle and programmed cell death. We introduced PARP expression vector overexpresses PARP in the eye discs of Drosophila, and established the PARP transgenic flies by P element-mediated germ line transformation. These flies showed mild roughening of the normally smooth ommatidial lattice involving tissue polarity disruption characterized by missrotation and incorrect chirality of ommatidia. Possible mechanisms of involvement of PARP in the development are discussed.

Original languageEnglish
Pages (from-to)89-96
Number of pages8
JournalMutation Research - Fundamental and Molecular Mechanisms of Mutagenesis
Volume477
Issue number1-2
DOIs
Publication statusPublished - 2001 Jun 2
Externally publishedYes

Fingerprint

DNA Breaks
Poly(ADP-ribose) Polymerases
Enzymes
Drosophila melanogaster
Diptera
Drosophila
Exons
Genes
Chromosomal Instability
Messenger RNA
Double-Stranded DNA Breaks
Germ Cells
Caspase 3
Embryonic Development
In Situ Hybridization
Ovum

Keywords

  • Drosophila
  • Enzyme
  • PARP

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Molecular Biology

Cite this

Genetic and functional analysis of PARP, a DNA strand break-binding enzyme. / Uchida, Masahiro; Hanai, Shuji; Uematsu, Naoya; Sawamoto, Kazunobu; Okano, Hideyuki; Miwa, Masanao; Uchida, Kazuhiko.

In: Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis, Vol. 477, No. 1-2, 02.06.2001, p. 89-96.

Research output: Contribution to journalArticle

Uchida, Masahiro ; Hanai, Shuji ; Uematsu, Naoya ; Sawamoto, Kazunobu ; Okano, Hideyuki ; Miwa, Masanao ; Uchida, Kazuhiko. / Genetic and functional analysis of PARP, a DNA strand break-binding enzyme. In: Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis. 2001 ; Vol. 477, No. 1-2. pp. 89-96.
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