Progress and prospects: immune responses to viral vectors

Viral vectors are potent gene delivery platforms used for the treatment of genetic and acquired diseases. However, just as viruses have evolved to infect cells efficiently, the immune system has evolved to fight off what it perceives as invading pathogens. Therefore, innate immunity and antigen-spec...

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Veröffentlicht in:Gene therapy 2010-03, Vol.17 (3), p.295-304
Hauptverfasser: Nayak, S, Herzog, R W
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description Viral vectors are potent gene delivery platforms used for the treatment of genetic and acquired diseases. However, just as viruses have evolved to infect cells efficiently, the immune system has evolved to fight off what it perceives as invading pathogens. Therefore, innate immunity and antigen-specific adaptive immune responses against vector-derived antigens reduce the efficacy and stability of in vivo gene transfer. In addition, a number of vectors are derived from parent viruses that humans encounter through natural infection, resulting in preexisting antibodies and possibly in memory responses against vector antigens. Similarly, antibody and T-cell responses may be directed against therapeutic gene products that often differ from the endogenous nonfunctional or absent protein that is being replaced. As details and mechanisms of such immune reactions are uncovered, novel strategies are being developed, and vectors are being specifically engineered to avoid, suppress or manipulate the response, ideally resulting in sustained expression and immune tolerance to the transgene product. This review provides a summary of our current knowledge of the interactions between the immune system adeno-associated virus, adenoviral and lentiviral vectors, and their transgene products.
doi_str_mv 10.1038/gt.2009.148
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Cell therapy and gene therapy ; Animals ; Antibodies, Viral - immunology ; Antigens ; Antigens, Viral - immunology ; Applied cell therapy and gene therapy ; Biological and medical sciences ; Biomedical and Life Sciences ; Biomedicine ; Biotechnology ; Cell Biology ; Complement System Proteins - immunology ; Dependovirus - immunology ; Expression vectors ; Fundamental and applied biological sciences. Psychology ; Gene Expression ; Gene Therapy ; Gene transfer ; Genetic aspects ; Genetic Therapy ; Genetic Vectors - immunology ; Health aspects ; Health. Pharmaceutical industry ; Human Genetics ; Humans ; Immune response ; Immune system ; Immune Tolerance ; Immunity, Innate ; Immunological memory ; Immunological tolerance ; Industrial applications and implications. Economical aspects ; Innate immunity ; Lentivirus - immunology ; Lymphocytes T ; Medical sciences ; Mice ; Nanotechnology ; Pathogens ; Physiological aspects ; review ; T-Lymphocytes - immunology ; Toll-Like Receptor 9 - immunology ; Transfusions. Complications. Transfusion reactions. 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However, just as viruses have evolved to infect cells efficiently, the immune system has evolved to fight off what it perceives as invading pathogens. Therefore, innate immunity and antigen-specific adaptive immune responses against vector-derived antigens reduce the efficacy and stability of in vivo gene transfer. In addition, a number of vectors are derived from parent viruses that humans encounter through natural infection, resulting in preexisting antibodies and possibly in memory responses against vector antigens. Similarly, antibody and T-cell responses may be directed against therapeutic gene products that often differ from the endogenous nonfunctional or absent protein that is being replaced. As details and mechanisms of such immune reactions are uncovered, novel strategies are being developed, and vectors are being specifically engineered to avoid, suppress or manipulate the response, ideally resulting in sustained expression and immune tolerance to the transgene product. 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Cell therapy and gene therapy</subject><subject>Animals</subject><subject>Antibodies, Viral - immunology</subject><subject>Antigens</subject><subject>Antigens, Viral - immunology</subject><subject>Applied cell therapy and gene therapy</subject><subject>Biological and medical sciences</subject><subject>Biomedical and Life Sciences</subject><subject>Biomedicine</subject><subject>Biotechnology</subject><subject>Cell Biology</subject><subject>Complement System Proteins - immunology</subject><subject>Dependovirus - immunology</subject><subject>Expression vectors</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Gene Expression</subject><subject>Gene Therapy</subject><subject>Gene transfer</subject><subject>Genetic aspects</subject><subject>Genetic Therapy</subject><subject>Genetic Vectors - immunology</subject><subject>Health aspects</subject><subject>Health. 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subjects Adaptive immunity
Adeno-associated virus
Adenoviridae - immunology
Adenoviruses
Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy
Animals
Antibodies, Viral - immunology
Antigens
Antigens, Viral - immunology
Applied cell therapy and gene therapy
Biological and medical sciences
Biomedical and Life Sciences
Biomedicine
Biotechnology
Cell Biology
Complement System Proteins - immunology
Dependovirus - immunology
Expression vectors
Fundamental and applied biological sciences. Psychology
Gene Expression
Gene Therapy
Gene transfer
Genetic aspects
Genetic Therapy
Genetic Vectors - immunology
Health aspects
Health. Pharmaceutical industry
Human Genetics
Humans
Immune response
Immune system
Immune Tolerance
Immunity, Innate
Immunological memory
Immunological tolerance
Industrial applications and implications. Economical aspects
Innate immunity
Lentivirus - immunology
Lymphocytes T
Medical sciences
Mice
Nanotechnology
Pathogens
Physiological aspects
review
T-Lymphocytes - immunology
Toll-Like Receptor 9 - immunology
Transfusions. Complications. Transfusion reactions. Cell and gene therapy
Vectors (Biology)
Viruses
title Progress and prospects: immune responses to viral vectors
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