Trials with 'epigenetic' drugs: an update
Angela Nebbioso1, Vincenzo Carafa, Rosaria Benedetti
1Dipartimento di Patologia Generale, Seconda Università degli Studi di Napoli, Vico L. de Crecchio 7, Napoli 80138, Italy.
Abstract:
Epigenetic inactivation of pivotal genes involved in correct cell growth is a hallmark of human pathologies, in particular cancer. These epigenetic mechanisms, including crosstalk between DNA methylation, histone modifications and non-coding RNAs, affect gene expression and are associated with disease progression. In contrast to genetic mutations, epigenetic changes are potentially reversible. Re-expression of genes epigenetically inactivated can result in the suppression of disease state or sensitization to specific therapies. Small molecules that reverse epigenetic inactivation, so-called epi-drugs, are now undergoing clinical trials. Accordingly, the Food and Drug Administration (FDA) and the European Medicines Agency (EMA) for cancer treatment have approved some of these drugs. Here, we focus on the biological features of epigenetic molecules, analyzing the mechanism(s) of action and their current use in clinical practice.
Insights
Epigenetic gene inactivation drives human diseases like cancer but is reversible. Re-expressing these genes with novel epi-drugs offers potential therapeutic strategies, with some already FDA-approved for cancer treatment.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- Epigenetic alterations, including DNA methylation and histone modifications, are key drivers of cellular dysfunction and disease, particularly cancer.
- These epigenetic changes impact gene expression and are linked to disease progression, unlike genetic mutations.
- Epigenetic modifications are potentially reversible, offering therapeutic opportunities.
Purpose of the Study:
- To explore the biological characteristics of epigenetic molecules.
- To analyze the mechanisms of action for epigenetic drugs.
- To review the current clinical applications of epigenetic therapies in disease treatment.
Main Methods:
- Literature review focusing on epigenetic mechanisms (DNA methylation, histone modifications, non-coding RNAs).
- Analysis of small molecules targeting epigenetic modifications (epi-drugs).
- Examination of clinical trial data and regulatory approvals (FDA, EMA) for epi-drugs in cancer therapy.
Main Results:
- Epigenetic inactivation of critical genes is a common feature in human pathologies, especially cancer.
- Re-expression of epigenetically silenced genes can reverse disease states or enhance treatment efficacy.
- Several epi-drugs are in clinical trials, with some approved by regulatory agencies for cancer treatment.
Conclusions:
- Epigenetic mechanisms play a crucial role in disease development and progression.
- Targeting epigenetic modifications with epi-drugs represents a promising therapeutic avenue.
- The clinical application of epi-drugs is expanding, offering new hope for patients with various diseases, particularly cancer.
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