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Appraisal for the Potential of Viral and Nonviral Vectors in Gene Therapy: A Review

期刊

GENES
卷 13, 期 8, 页码 -

出版社

MDPI
DOI: 10.3390/genes13081370

关键词

gene delivery; viral vectors; nonviral vectors; gene expression; transgene; gene therapy

资金

  1. Deanship of Scientific Research at King Khalid University, Abha, Saudi Arabia [R.G.P.2/7/43]

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Gene therapy has gained significant importance in medical research as a potential treatment strategy for various diseases. The delivery of genes to target cells inside the body requires suitable vectors to protect the gene cargo and enable efficient delivery. Viral vectors and nonviral vectors have been developed to serve as carriers for gene delivery, with viral vectors being highly efficient and nonviral vectors providing sustainable gene expression with minimal side effects.
Over the past few decades, gene therapy has gained immense importance in medical research as a promising treatment strategy for diseases such as cancer, AIDS, Alzheimer's disease, and many genetic disorders. When a gene needs to be delivered to a target cell inside the human body, it has to pass a large number of barriers through the extracellular and intracellular environment. This is why the delivery of naked genes and nucleic acids is highly unfavorable, and gene delivery requires suitable vectors that can carry the gene cargo to the target site and protect it from biological degradation. To date, medical research has come up with two types of gene delivery vectors, which are viral and nonviral vectors. The ability of viruses to protect transgenes from biological degradation and their capability to efficiently cross cellular barriers have allowed gene therapy research to develop new approaches utilizing viruses and their different genomes as vectors for gene delivery. Although viral vectors are very efficient, science has also come up with numerous nonviral systems based on cationic lipids, cationic polymers, and inorganic particles that provide sustainable gene expression without triggering unwanted inflammatory and immune reactions, and that are considered nontoxic. In this review, we discuss in detail the latest data available on all viral and nonviral vectors used in gene delivery. The mechanisms of viral and nonviral vector-based gene delivery are presented, and the advantages and disadvantages of all types of vectors are also given.

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