PMID- 17950396 OWN - NLM STAT- MEDLINE DCOM- 20080910 LR - 20211109 IS - 0042-6822 (Print) IS - 0042-6822 (Linking) VI - 371 IP - 1 DP - 2008 Feb 5 TI - Adenovirus dodecahedron cell attachment and entry are mediated by heparan sulfate and integrins and vary along the cell cycle. PG - 155-64 AB - The adenovirus penton base is a strategic protein involved in the virus internalisation pathway through interaction between its RGD sequences and integrin. In some human adenovirus serotypes, this pentameric protein features the ability of interacting together by twelve, leading to the formation of a symmetric nanoparticle called dodecahedron (Dd). This non-infectious adenovirus-like particle exhibiting sixty RGD sequences interacts with integrin but also with heparan sulfate proteoglycans (HSPGs) expressed at the cell surface. In this study, we discriminate the respective importance of HSPGs and integrin on human adenovirus serotype 3 dodecahedron attachment and entry. Using different cell lines and a specific integrin inhibitor, we have determined that HSPGs are mainly responsible for particle attachment to the cell surface, favouring a strictly required interaction with integrin that triggers internalisation. No other receptors are involved in Dd entry and integrins on their own can mediate the particle entry in HSPGs-deficient cells. Moreover, integrin recognition by Dd is highly susceptible to cations and particularly to manganese that enhances particle binding by 4- to 7-fold compared to calcium. Interestingly, investigations on Dd receptors along the cell cycle revealed an enhanced particle targeting to mitotic cells and a loss of internalisation at this stage. This phenomenon observed with both HeLa- and HSPGs-deficient cells, depends on integrin remodelling during mitosis. This provides new clues for the use of this adenovirus nanoparticle as a delivery vector and sheds light on the integrin and HSPGs relationship in both resting and dividing cells. FAU - Fender, Pascal AU - Fender P AD - CNRS, CEA, UJF: Institut de Biologie Structurale, 41 rue Jules Horowitz 38027 Grenoble, France. pascal.fender@ibs.fr FAU - Schoehn, Guy AU - Schoehn G FAU - Perron-Sierra, Francoise AU - Perron-Sierra F FAU - Tucker, Gordon C AU - Tucker GC FAU - Lortat-Jacob, Hugues AU - Lortat-Jacob H LA - eng PT - Journal Article DEP - 20071022 PL - United States TA - Virology JT - Virology JID - 0110674 RN - 0 (Capsid Proteins) RN - 0 (Integrins) RN - 0 (Proteoglycans) RN - 0 (heparin proteoglycan) RN - 9005-49-6 (Heparin) SB - IM MH - Adenoviruses, Human/*physiology/ultrastructure MH - Animals MH - CHO Cells MH - Capsid Proteins/*metabolism MH - Cell Adhesion/physiology MH - *Cell Cycle MH - Cricetinae MH - Cricetulus MH - HeLa Cells MH - Heparin/*analogs & derivatives/physiology MH - Humans MH - Integrins/*physiology MH - Proteoglycans/*physiology EDAT- 2007/10/24 09:00 MHDA- 2008/09/11 09:00 CRDT- 2007/10/24 09:00 PHST- 2007/07/05 00:00 [received] PHST- 2007/08/22 00:00 [revised] PHST- 2007/09/07 00:00 [accepted] PHST- 2007/10/24 09:00 [pubmed] PHST- 2008/09/11 09:00 [medline] PHST- 2007/10/24 09:00 [entrez] AID - S0042-6822(07)00594-6 [pii] AID - 10.1016/j.virol.2007.09.026 [doi] PST - ppublish SO - Virology. 2008 Feb 5;371(1):155-64. doi: 10.1016/j.virol.2007.09.026. Epub 2007 Oct 22.