期刊
JOURNAL OF VIROLOGICAL METHODS
卷 116, 期 2, 页码 177-180出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jviromet.2003.11.012
关键词
macromolecular transport; peptide; in vivo phage display; intestinal mucosa
To investigate whether specific peptide sequences could induce virion transport across the intestinal barrier, we used phage display to both identify signalling peptides capable of inducing trans-intestinal transport and also provide a suitable model of virion translocation. We utilised simple, single-round high input in vivo biopanning protocol using a 7-mer random amino acid phage display library. Phage were applied by gavage and translocation across the intestinal barrier assessed by phage recovery from the spleen 2 h later. Following isolation, a number of phage were sequenced and several homologies with HIV gp120 were identified. Inummocytochemical analysis of phage translocation across the intestinal barrier by a phage bearing the peptide YPRLLTP demonstrated that phage were actively transported along specific channels. It is concluded that utilisation of in vivo phage display (IVPD) has provided evidence for a specific peptide-guided transport of undegraded cargo across the intestinal barrier, modelled by M13 phage. (C) 2003 Elsevier B.V. All rights reserved.
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