Immune responses to lentiviral vectors

Area of Science:

• Biomedical Engineering
• Molecular Biology
• Immunology

Background:

• Gene therapy aims for efficient and sustained therapeutic gene expression in human tissues.
• Lentiviral vectors (LVs) are promising for gene replacement due to efficient transduction, integration, and long-term expression.
• Host immune responses against viral vectors and transgenes present a significant barrier to effective gene therapy.

Purpose of the Study:

• To highlight the challenges and advantages of using lentiviral vectors for gene therapy.
• To underscore the critical issue of immune responses hindering gene therapy efficacy.
• To emphasize the ongoing need for strategies to overcome immune barriers in gene transfer.

Main Methods:

• Review of existing literature on gene therapy, lentiviral vectors, and host immune responses.
• Analysis of the benefits of LVs, including transduction efficiency and stable integration.
• Identification of immune-mediated challenges associated with viral vector delivery and transgene expression.

Main Results:

• Lentiviral vectors demonstrate significant potential for gene replacement therapy.
• Immune responses, both innate and adaptive, are major obstacles to successful gene transfer.
• The absence of viral genes and pre-existing immunity interference are key advantages of LVs.

Conclusions:

• Overcoming immune responses to lentiviral vectors and therapeutic transgenes is crucial for advancing gene therapy.
• Further research into immune evasion strategies is essential for realizing the full potential of gene therapy.
• Developing robust gene transfer systems requires addressing host immune system interactions.