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Combined Genetic and Chemical Capsid Modifications of Adenovirus-Based Gene Transfer Vectors for Shielding and Targeting
Published on: October 26, 2018
The multilayered control of acetylation during adenovirus-based immunotherapy of cancer
Akhila Parthasarathy1, Maria Frost2, Andrew G Gillard1
1Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
Abstract:
Adenoviruses are highly immunogenic agents that have shown promise first as gene delivery vectors and later as oncolytic viruses. Currently, oncolytic adenoviruses are featured in over 30% of cancer virotherapy clinical trials. Due to their effective cellular uptake and hijack of cellular machinery, replication-competent adenoviruses are promising therapeutic agents for treating a wide range of tumors. Adenoviral influence on host cell acetylome regulation has regained attention, as these viruses redirect or suppress acetylation during replication, making them potentially desirable therapeutic agents for cancers driven by epigenetic modifications. In this review, we aim to cover the viral processes influencing the acetylome of the host genome. In addition, we shall discuss the effect of differential acetylation on the antiviral defense mounted by the host immune system. Lastly, we will discuss the opportunities for combining acetylation modifiers with oncolytic adenoviruses to improve further outcomes for patients treated with viroimmunotherapy.
Insights
Oncolytic adenoviruses show promise in cancer virotherapy by manipulating host cell acetylation. Combining these viruses with acetylation modifiers may enhance cancer treatment outcomes.
Area of Science:
- Virology
- Cancer Biology
- Immunology
Background:
- Adenoviruses are potent gene delivery vectors and oncolytic viruses, prevalent in cancer virotherapy trials.
- Replication-competent adenoviruses offer therapeutic potential for diverse tumors due to efficient cellular uptake.
- Adenoviral manipulation of host cell acetylome regulation is increasingly recognized for its role in cancer treatment.
Purpose of the Study:
- To review viral processes affecting the host genome's acetylome.
- To discuss how differential acetylation impacts host antiviral defense.
- To explore combining acetylation modifiers with oncolytic adenoviruses for improved viroimmunotherapy outcomes.
Main Methods:
- Literature review of studies on adenoviruses and host cell acetylation.
- Analysis of viral mechanisms influencing host genome acetylation.
- Examination of the interplay between acetylation and antiviral immunity.
Main Results:
- Adenoviruses actively redirect or suppress host cell acetylation during replication.
- Altered acetylation patterns influence the efficacy of antiviral immune responses.
- The study highlights the potential of targeting the acetylome in cancer virotherapy.
Conclusions:
- Adenoviruses' impact on host acetylation presents therapeutic opportunities for epigenetic-driven cancers.
- Modulating acetylation alongside oncolytic adenoviruses could enhance viroimmunotherapy efficacy.
- Further research into acetylation modifiers and oncolytic adenoviruses is warranted for improved cancer treatment.
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