What is an antiviral vector used for in gene therapy?

• A. To cause disease in cells
• B. To deliver genetic material into cells
• C. To replicate viral infections
• D. To cut and alter DNA

Answer: (B)

An antiviral vector serves a crucial role in gene therapy by delivering genetic material into cells. In this context, an injectable viral vector can be engineered to carry therapeutic genes that need to be introduced into a patient’s cells to treat a specific condition, such as a genetic disorder or certain types of cancer. The vector is typically derived from a virus, which has been modified to ensure that it cannot cause disease. The ability of the viral vector to efficiently enter cells and facilitate the uptake of genetic material makes it a powerful tool for therapeutic purposes.

Utilizing an antiviral vector is an important strategy in gene therapy because it allows for targeted delivery to specific tissues or cell types, thereby enhancing the effectiveness of the treatment and minimizing potential side effects. In contrast, the other options do not align with the purpose of antiviral vectors in this context. For example, causing disease in cells or replicating viral infections is counterproductive in a therapeutic setting, and cutting and altering DNA typically refers to different technologies, such as CRISPR, rather than the function of antiviral vectors.