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Different AAV serotypes display distinct tissue tropism, believed to be related to the distribution of their receptors on target cells. The AAV serotype helper plasmids pXR1, pXR2, pXR4, and pXR5, as well as the plasmid pXX6-80 containing the adenovirus helper genes for AAV replication, have been described elsewhere (32, 47). AAV6 helper plasmid pXR6 was […]

In competitive binding assays, 10 mm free synthetic sialic acid (Sigma) was added 30 min before the endocytic agent and left during the assay. These were further purified by size-exclusion chromatography with elution in 50 mm KPi, 200 mm NaCl, pH 7.8, dialyzed against assay buffer (20 mm Tris, 150 mm NaCl, 2 mm tris(2-carboxyethyl)phosphine,

This was followed by the addition of neuraminidase solution or buffer control to each well and continued resistance measurement 4 (or more) h. AAV6 relies more on sialic acid or sialic acid-containing glycoproteins than AAV1 for cell entry and/or subsequent steps of infection. Neuraminidases are enzymes that cleave via hydrolysis α(2-3)-, α(2-6)-, and α(2-8)-linked terminal

Background was washed out with deionized water and gel was scanned with the default instrument settings for analysis (Lexmark CX727 scanner). Inhibition of glycolipid synthesis was carried out as described previously (36) with some modifications. Resialylation was carried out with 50 mU/ml sialyltransferase in α-MEM for 2 h at 37°C. In the control groups, Lec-2

Which application/end-user or product type may seek incremental growth prospects? AAV6 binding appears to be less affected by neuraminidase compared with AAV1 binding, suggesting that AAV6 may also bind to moieties other than sialic acid on the cell surface. These data suggest that sialic acid present on the cell surface is required for efficient AAV1