PARPs in Cell Death and PARP Inhibitors in Cancers: 2nd Edition

A special issue of Biomolecules (ISSN 2218-273X). This special issue belongs to the section "Molecular Medicine".

Deadline for manuscript submissions: 10 July 2025 | Viewed by 678

Special Issue Editors

Special Issue Information

Dear Colleagues,

Following a very successful first edition, we are pleased to announce the launch of a second edition of this Special Issue, entitled “PARPs in Cell Death and PARP Inhibitors in Cancers”.

Poly (ADP-ribose) polymerases (PARPs) are a family of related enzymes that participate in many cellular processes such as DNA repair, genomic stability, transcription, replication, mitosis, cell growth, and programmed cell death. Combined with the concept of synthetic lethality, PARP inhibitors have been developed to inhibit the growth of cancer cells and kill them. At present, four PARP inhibitors have been approved by the United States Food and Drug Administration for the treatment of ovarian cancer, breast cancer, pancreatic cancer, and other cancers.

Nevertheless, the process via which PARP participates in cells still needs to be explored in order to enhance the applicative value of PARP and PARP inhibitors.

This Special Issue welcomes the submission of original research or review articles that address the role of PARPs in cell death and the application of PARP inhibitors in cancers. We look forward to receiving your contributions.

Dr. María Isabel Rodríguez
Dr. Josefa León
Guest Editors

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Keywords

  • PARPs
  • PARP inhibitors
  • cancers
  • cell death
  • DNA repair

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Published Papers (1 paper)

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Research

22 pages, 4408 KiB  
Article
iNOS-Produced Nitric Oxide from Cancer Cells as an Intermediate of Stemness Regulation by PARP-1 in Colorectal Cancer
by María del Moral-Martinez, Paula Sánchez-Uceta, Ruben Clemente-Gonzalez, Sara Moreno-SanJuan, Jose D. Puentes-Pardo, Huda Khaldy, David Lopez-Perez, Javier Arnedo, Jorge Casado, Luis Martínez-Heredia, Angel Carazo and Josefa León
Biomolecules 2025, 15(1), 125; https://doi.org/10.3390/biom15010125 - 14 Jan 2025
Viewed by 561
Abstract
PARP-1 has been linked to the progression of several types of cancer. We have recently reported that PARP-1 influences tumor progression in CRC through the regulation of CSCs in a p53-dependent manner. In this study, we propose that nitric oxide (NO) produced by [...] Read more.
PARP-1 has been linked to the progression of several types of cancer. We have recently reported that PARP-1 influences tumor progression in CRC through the regulation of CSCs in a p53-dependent manner. In this study, we propose that nitric oxide (NO) produced by inducible nitric oxide synthase (iNOS) could act as a mediator. We evaluated the expression of iNOS in a cohort of patients previously used to analyze the effects of PARP-1 on CRC in relation to p53 status. We also developed an in vitro model in which PARP-1 was stably overexpressed. In CRC patients, iNOS expression correlated with the differentiation grade, and with a high expression of CSC markers, although only in wild-type p53 tumors, as previously found for PARP-1. In vitro, overexpression of PARP-1 induced increased growth and stemness in wild-type p53 cells, while exerting the opposite effect on mutated ones, as expected. Treatment with 1400 W, a selective inhibitor of iNOS, or gene silencing of the gene counteracted the effects of PARP-1 in both p53 wild-type and p53 mutated cells. Given that the development of resistance has been demonstrated after treatment with PARP-1 inhibitors, iNOS could be considered a new therapeutic target in CRC, although only in patients with wild-type p53 tumors. Full article
(This article belongs to the Special Issue PARPs in Cell Death and PARP Inhibitors in Cancers: 2nd Edition)
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