Adenovirus as a Vector and Oncolytic Virus

Area of Science:

• Gene Therapy
• Virology
• Oncolytic Virotherapy

Background:

• Adenoviral vectors were early gene therapy tools but face challenges with cytotoxicity and immunogenicity.
• Lentiviruses, adeno-associated viruses, and herpes simplex virus are gaining traction, making adenoviral vectors seem obsolete.
• Despite drawbacks, adenoviral vectors possess high cargo capacity and transduction efficiency advantages.

Purpose of the Study:

• To review advancements in new-generation adenoviral vectors.
• To highlight strategies for improving adenoviral vector specificity and safety in gene therapy.

Main Methods:

• Review of current literature on adenoviral vector modifications.
• Analysis of strategies targeting the fiber knob region for enhanced cancer cell affinity.
• Examination of cancer-cell-specific promoters for controlled transgene expression.

Main Results:

• Modified fiber knob regions improve adenoviral vector targeting of cancer cells.
• Cancer-cell-specific promoters enable precise control over transgene expression, minimizing off-target effects.
• New-generation adenoviral vectors show potential to overcome previous limitations.

Conclusions:

• Adenoviral vectors remain valuable tools in gene therapy due to their inherent advantages.
• Strategic modifications can enhance the safety and efficacy of adenoviral vectors for cancer treatment.
• Further development of adenoviral vectors holds promise for advanced gene therapy applications.