Methylation status of the adeno-associated virus type 2 (Aav2)

Renáta Tóth, István Mészáros, Daniela Hüser, Barbara Forró, Szilvia Marton, F. Olasz, K. Bányai, Regine Heilbronn, Z. Zádori

Research output: Article

Abstract

To analyze the methylation status of wild-type adeno-associated virus type 2 (AAV2), bisulfite PCR sequencing (BPS) of the packaged viral genome and its integrated form was performed and 262 of the total 266 CG dinucleotides (CpG) were mapped. In virion-packaged DNA, the ratio of the methylated cytosines ranged between 0–1.7%. In contrast, the chromosomally integrated AAV2 genome was hypermethylated with an average of 76% methylation per CpG site. The methylation level showed local minimums around the four known AAV2 promoters. To study the effect of methylation on viral rescue and replication, the replication initiation capability of CpG methylated and non-CpG methylated AAV DNA was compared. The in vitro hypermethylation of the viral genome does not inhibit its rescue and replication from a plasmid transfected into cells. This insensitivity of the viral replicative machinery to methylation may permit the rescue of the integrated heavily methylated AAV genome from the host’s chromosomes.

Original languageEnglish
Article number38
JournalViruses
Volume11
Issue number1
DOIs
Publication statusPublished - jan. 1 2019

Fingerprint

Dependovirus
Methylation
Viral Genome
Genome
Cytosine
DNA
Virion
Plasmids
Chromosomes
Polymerase Chain Reaction

ASJC Scopus subject areas

  • Infectious Diseases
  • Virology

Cite this

Tóth, R., Mészáros, I., Hüser, D., Forró, B., Marton, S., Olasz, F., ... Zádori, Z. (2019). Methylation status of the adeno-associated virus type 2 (Aav2). Viruses, 11(1), [38]. https://doi.org/10.3390/v11010038

Methylation status of the adeno-associated virus type 2 (Aav2). / Tóth, Renáta; Mészáros, István; Hüser, Daniela; Forró, Barbara; Marton, Szilvia; Olasz, F.; Bányai, K.; Heilbronn, Regine; Zádori, Z.

In: Viruses, Vol. 11, No. 1, 38, 01.01.2019.

Research output: Article

Tóth, R, Mészáros, I, Hüser, D, Forró, B, Marton, S, Olasz, F, Bányai, K, Heilbronn, R & Zádori, Z 2019, 'Methylation status of the adeno-associated virus type 2 (Aav2)', Viruses, vol. 11, no. 1, 38. https://doi.org/10.3390/v11010038
Tóth R, Mészáros I, Hüser D, Forró B, Marton S, Olasz F et al. Methylation status of the adeno-associated virus type 2 (Aav2). Viruses. 2019 jan. 1;11(1). 38. https://doi.org/10.3390/v11010038
Tóth, Renáta ; Mészáros, István ; Hüser, Daniela ; Forró, Barbara ; Marton, Szilvia ; Olasz, F. ; Bányai, K. ; Heilbronn, Regine ; Zádori, Z. / Methylation status of the adeno-associated virus type 2 (Aav2). In: Viruses. 2019 ; Vol. 11, No. 1.
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