Abstract
Pancreatic ductal adenocarcinoma (PDAC) is quite resistant to conventional treatments, and gemcitabine, the standard chemotherapeutic agent, offers only a small benefit. Development and progression of PDAC are complex processes involving dysregulation of multiple signal transduction pathways arising from not only genetic but also epigenetic alterations. This makes the epigenetic approach to the treatment of PDAC of great interest. Histone deacetylases, a family of enzymes that, by removal of acetyl groups from a variety of histone and nonhistone proteins, play an important role in the epigenetic regulation of gene expression, are frequently dysregulated in PDAC. In particular, overexpression of class I histone deacetylases has been related to higher tumor grade, poor prognosis and development of chemoresistance. Histone deacetylase inhibitors (HDACIs), a novel class of agents endowed with pleiotropic antitumor effects, appear promising either for their preferential toxicity towards transformed as compared to normal cells and their ability to synergistically enhance the anticancer activity of radiotherapy and many chemotherapeutic agents. Many HDACIs have been shown to increase the antiproliferative and proapoptotic effects of gemcitabine, 5-fluorouracil and bortezomib, a new proteasome inhibitor, in vitro and in vivo PDAC xenograft models. MGCD0103, romidepsin, panobinostat, vorinostat and valproic acid, are currently being tested in association with radiotherapy or chemotherapy (gemcitabine, fluoropyrimidines, proteasome inhibitors) in phase I-II clinical trials in patients with locally advanced or metastatic PDAC.
Keywords: Cancer therapy, epigenetic, histone deacetylase, histone deacetylase inhibitor, molecular targeted therapy, pancreatic ductal adenocarcinoma, HDACs IN PDAC, 10-epoxy-decanoyl, gemcitabine, interleukin-13 Receptor 2, non-homologous end-joining, reactive oxygen species, radiation therapy
Current Cancer Drug Targets
Title:An Epigenetic Approach to Pancreatic Cancer Treatment: The Prospective Role of Histone Deacetylase Inhibitors
Volume: 12 Issue: 4
Author(s): Nicola Tinari, Michele De Tursi, Antonino Grassadonia, Marinella Zilli, Liborio Stuppia, Stefano Iacobelli and Clara Natoli
Affiliation:
Keywords: Cancer therapy, epigenetic, histone deacetylase, histone deacetylase inhibitor, molecular targeted therapy, pancreatic ductal adenocarcinoma, HDACs IN PDAC, 10-epoxy-decanoyl, gemcitabine, interleukin-13 Receptor 2, non-homologous end-joining, reactive oxygen species, radiation therapy
Abstract: Pancreatic ductal adenocarcinoma (PDAC) is quite resistant to conventional treatments, and gemcitabine, the standard chemotherapeutic agent, offers only a small benefit. Development and progression of PDAC are complex processes involving dysregulation of multiple signal transduction pathways arising from not only genetic but also epigenetic alterations. This makes the epigenetic approach to the treatment of PDAC of great interest. Histone deacetylases, a family of enzymes that, by removal of acetyl groups from a variety of histone and nonhistone proteins, play an important role in the epigenetic regulation of gene expression, are frequently dysregulated in PDAC. In particular, overexpression of class I histone deacetylases has been related to higher tumor grade, poor prognosis and development of chemoresistance. Histone deacetylase inhibitors (HDACIs), a novel class of agents endowed with pleiotropic antitumor effects, appear promising either for their preferential toxicity towards transformed as compared to normal cells and their ability to synergistically enhance the anticancer activity of radiotherapy and many chemotherapeutic agents. Many HDACIs have been shown to increase the antiproliferative and proapoptotic effects of gemcitabine, 5-fluorouracil and bortezomib, a new proteasome inhibitor, in vitro and in vivo PDAC xenograft models. MGCD0103, romidepsin, panobinostat, vorinostat and valproic acid, are currently being tested in association with radiotherapy or chemotherapy (gemcitabine, fluoropyrimidines, proteasome inhibitors) in phase I-II clinical trials in patients with locally advanced or metastatic PDAC.
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Tinari Nicola, De Tursi Michele, Grassadonia Antonino, Zilli Marinella, Stuppia Liborio, Iacobelli Stefano and Natoli Clara, An Epigenetic Approach to Pancreatic Cancer Treatment: The Prospective Role of Histone Deacetylase Inhibitors, Current Cancer Drug Targets 2012; 12 (4) . https://dx.doi.org/10.2174/156800912800190884
DOI https://dx.doi.org/10.2174/156800912800190884 |
Print ISSN 1568-0096 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-5576 |
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