BAAV transcytosis requires an interaction with beta-1-4 linked- glucosamine and gp96.
BAAV transcytosis requires an interaction with beta-1-4 linked- glucosamine and gp96.
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DOI:
10.1371/journal.pone.0009336
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发表时间:
2010-03-09
期刊:
影响因子:
3.7
通讯作者:
Chiorini JA
中科院分区:
文献类型:
--
作者:
Di Pasquale G;Kaludov N;Agbandje-McKenna M;Chiorini JA
Cell surface carbohydrates play an important role in virus entry and intracellular trafficking. Bovine Adeno-Associated Virus (BAAV) uses plasma membrane gangliosides for transduction and infection. In addition, independent of the infectious pathway, BAAV also has the ability to pass through barrier epithelia and endothelia using a transcytosis pathway dependent upon the presence of cell surface carbohydrates. Thus, in order to better define the carbohydrate interactions that are necessary for BAAV infection or transcytosis, a glycan microarray composed of both natural and synthetic carbohydrates was probed with HA-tagged BAAV particles. This identified chitotriose, a trimer of β-1-4-linked N-acetyl glucosamine, as having an interaction with BAAV. Competition experiments showed that the BAAV interaction with this carbohydrate is not necessary for infection but is instead important in the transcytosis pathway. The β-1-4-linked N-acetyl glucosamine modification has been reported on gp96, a glycoprotein involved in the transcytosis of bacteria and toxins. Significantly, immunoprecipitation and competition experiments with an anti-gp96 antibody and a soluble form of gp96, respectively, showed this glycoprotein can also interact with BAAV to serve as a receptor for its transcytosis.
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