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Updated: Jul 3, 2025
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Using the E1A Minigene Tool to Study mRNA Splicing Changes
Published on: April 22, 2021
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RNA elements that control human papillomavirus mRNA splicing-targets for therapy?
Stefan Schwartz1, Chengjun Wu2, Naoko Kajitani1
1Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.
Journal of Medical Virology
|February 16, 2024
Summary
Human papillomaviruses (HPVs), particularly HPV16, cause significant global cancer burdens. Targeting HPV16 RNA splicing offers a novel therapeutic strategy against these infections and associated cancers.
Area of Science:
- Virology
- Molecular Biology
- Oncology
Background:
- Human papillomaviruses (HPVs) are responsible for over 4.5% of global cancers, with HPV type 16 (HPV16) implicated in more than half of these cases.
- While prophylactic vaccines exist, effective antiviral drugs for HPV infections are lacking, necessitating the urgent identification of novel therapeutic targets.
- Alternative RNA splicing is a critical mechanism for gene expression in HPVs, including HPV16, and precise regulation is essential for viral function.
Purpose of the Study:
- To summarize the current understanding of cis-acting RNA elements in HPV16 that regulate viral mRNA splicing.
- To discuss the role of cellular trans-acting factors interacting with these RNA elements.
- To explore the potential of exploiting HPV16 RNA splicing as a therapeutic target for HPV infections and cancer.
Main Methods:
- Review and synthesis of existing research on HPV16 RNA splicing mechanisms.
- Analysis of cis-acting RNA elements within HPV16 mRNAs.
- Investigation of interactions between viral RNA elements and cellular splicing factors.
Main Results:
- HPV16 extensively utilizes alternative RNA splicing for its gene expression.
- Specific cis-acting RNA elements on HPV16 mRNAs, in conjunction with cellular proteins, precisely control the splicing process.
- Disruptions in this delicate splicing mechanism can lead to altered mRNA levels or dysfunctional viral transcripts.
Conclusions:
- Papillomavirus RNA splicing is a sensitive process, making it a viable target for therapeutic intervention.
- Understanding the interplay between HPV16 cis-acting RNA elements and cellular factors is key to developing novel antiviral strategies.
- Targeting HPV16 RNA splicing presents a promising avenue for treating HPV-associated cancers and infections.
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