Your browser doesn't support javascript.
loading
Histone ADP-ribosylation promotes resistance to PARP inhibitors by facilitating PARP1 release from DNA lesions.
Zentout, Siham; Imburchia, Victor; Chapuis, Catherine; Duma, Lena; Schützenhofer, Kira; Prokhorova, Evgeniia; Ahel, Ivan; Smith, Rebecca; Huet, Sébastien.
Afiliación
  • Zentout S; University of Rennes, CNRS, Institut de génétique et développement de Rennes-UMR 6290, Biologie, Santé, Innovation Technologique (BIOSIT)-UMS3480, Rennes F-35000, France.
  • Imburchia V; University of Rennes, CNRS, Institut de génétique et développement de Rennes-UMR 6290, Biologie, Santé, Innovation Technologique (BIOSIT)-UMS3480, Rennes F-35000, France.
  • Chapuis C; University of Rennes, CNRS, Institut de génétique et développement de Rennes-UMR 6290, Biologie, Santé, Innovation Technologique (BIOSIT)-UMS3480, Rennes F-35000, France.
  • Duma L; Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, United Kingdom.
  • Schützenhofer K; Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, United Kingdom.
  • Prokhorova E; Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, United Kingdom.
  • Ahel I; Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, United Kingdom.
  • Smith R; University of Rennes, CNRS, Institut de génétique et développement de Rennes-UMR 6290, Biologie, Santé, Innovation Technologique (BIOSIT)-UMS3480, Rennes F-35000, France.
  • Huet S; Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, United Kingdom.
Proc Natl Acad Sci U S A ; 121(25): e2322689121, 2024 Jun 18.
Article en En | MEDLINE | ID: mdl-38865276
ABSTRACT
Poly(ADP-ribose) polymerase 1 (PARP1) has emerged as a central target for cancer therapies due to the ability of PARP inhibitors to specifically kill tumors deficient for DNA repair by homologous recombination. Upon DNA damage, PARP1 quickly binds to DNA breaks and triggers ADP-ribosylation signaling. ADP-ribosylation is important for the recruitment of various factors to sites of damage, as well as for the timely dissociation of PARP1 from DNA breaks. Indeed, PARP1 becomes trapped at DNA breaks in the presence of PARP inhibitors, a mechanism underlying the cytotoxitiy of these inhibitors. Therefore, any cellular process influencing trapping is thought to impact PARP inhibitor efficiency, potentially leading to acquired resistance in patients treated with these drugs. There are numerous ADP-ribosylation targets after DNA damage, including PARP1 itself as well as histones. While recent findings reported that the automodification of PARP1 promotes its release from the DNA lesions, the potential impact of other ADP-ribosylated proteins on this process remains unknown. Here, we demonstrate that histone ADP-ribosylation is also crucial for the timely dissipation of PARP1 from the lesions, thus contributing to cellular resistance to PARP inhibitors. Considering the crosstalk between ADP-ribosylation and other histone marks, our findings open interesting perspectives for the development of more efficient PARP inhibitor-driven cancer therapies.
Asunto(s)
Palabras clave

Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Histonas / Inhibidores de Poli(ADP-Ribosa) Polimerasas / Poli(ADP-Ribosa) Polimerasa-1 / ADP-Ribosilación Límite: Humans Idioma: En Revista: Proc Natl Acad Sci U S A Año: 2024 Tipo del documento: Article País de afiliación: Francia

Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Histonas / Inhibidores de Poli(ADP-Ribosa) Polimerasas / Poli(ADP-Ribosa) Polimerasa-1 / ADP-Ribosilación Límite: Humans Idioma: En Revista: Proc Natl Acad Sci U S A Año: 2024 Tipo del documento: Article País de afiliación: Francia