GENERATION OF HELPER PLASMIDS ENCODING MUTANT ADENO-ASSOCIATED VIRUS TYPE 2 CAPSID PROTEINS WITH INCREASED RESISTANCE AGAINST PROTEASOMAL DEGRADATION

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AHMADIANKIA NAGHMEH; NESHATI VAJIHEH; NESHATI ZEINAB; SWILDENS JIM; AF DE VRIES ANTOINE

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Journal Paper

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Journal: Iranian Journal of Basic Medical Sciences Year:2013 | Volume:16 | Issue:7 Page(s): 813-821

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Title

GENERATION OF HELPER PLASMIDS ENCODING MUTANT ADENO-ASSOCIATED VIRUS TYPE 2 CAPSID PROTEINS WITH INCREASED RESISTANCE AGAINST PROTEASOMAL DEGRADATION

Author(s)

Keywords

GENE THERAPY

VIRAL VECTOR

ADENO-ASSOCIATED VIRUS TYPE 2

CAPSID PROTEIN

PROTEASOMAL DEGRADATION

MUTAGENESIS

TRANSDUCTION EFFICIENCY

Abstract

Objective(s): ADENO-ASSOCIATED VIRUS TYPE 2 (AAV2) vectors are widely used for both experimental and clinical GENE THERAPY. A recent research has shown that the performance of these vectors can be greatly improved by substitution of specific surface-exposed tyrosine residues with phenylalanines. In this study, a fast and simple method is presented to generate AAV2 vector helper plasmids encoding CAPSID PROTEINs with single, double or triple Y®F mutations.Materials and Methods: A one-step, high-fidelity polymerase chain reaction (PCR) cloning procedure involving the use of two partially overlapping primers to amplify a circular DNA template was applied to produce AAV2 cap genes encoding VP1 mutants with Y→F substitutions in residues 444, 500 or 730. The resulting constructs were used to make the different double and triple mutant by another round of PCR (Y444500F mutant), subcloning (Y444730F and Y500730F mutants) or a combination of both techniques (Y444500730F mutant).Results: Nucleotide sequence analysis revealed successful introduction of the desired mutations in the AAV2 cap gene and showed the absence of any unintended mutations in the DNA fragments used to assemble the final set of AAV2 vector helper plasmids. The correctness of these plasmids was further confirmed by restriction mapping.Conclusion: PCR-based, single-step site-directed MUTAGENESIS of circular DNA templates is a highly efficient and cost-effective method to generate AAV2 vector helper plasmids encoding mutant Cap proteins for the production of vector particles with increased gene transfer efficiency.

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APA: Copy

AHMADIANKIA, NAGHMEH, NESHATI, VAJIHEH, NESHATI, ZEINAB, SWILDENS, JIM, & AF DE VRIES, ANTOINE. (2013). GENERATION OF HELPER PLASMIDS ENCODING MUTANT ADENO-ASSOCIATED VIRUS TYPE 2 CAPSID PROTEINS WITH INCREASED RESISTANCE AGAINST PROTEASOMAL DEGRADATION. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES, 16(7), 813-821. SID. https://sid.ir/paper/629231/en

Vancouver: Copy

AHMADIANKIA NAGHMEH, NESHATI VAJIHEH, NESHATI ZEINAB, SWILDENS JIM, AF DE VRIES ANTOINE. GENERATION OF HELPER PLASMIDS ENCODING MUTANT ADENO-ASSOCIATED VIRUS TYPE 2 CAPSID PROTEINS WITH INCREASED RESISTANCE AGAINST PROTEASOMAL DEGRADATION. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES[Internet]. 2013;16(7):813-821. Available from: https://sid.ir/paper/629231/en

IEEE: Copy

NAGHMEH AHMADIANKIA, VAJIHEH NESHATI, ZEINAB NESHATI, JIM SWILDENS, and ANTOINE AF DE VRIES, “GENERATION OF HELPER PLASMIDS ENCODING MUTANT ADENO-ASSOCIATED VIRUS TYPE 2 CAPSID PROTEINS WITH INCREASED RESISTANCE AGAINST PROTEASOMAL DEGRADATION,” IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES, vol. 16, no. 7, pp. 813–821, 2013, [Online]. Available: https://sid.ir/paper/629231/en

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