Umeå universitets logga

umu.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
LactoferricinH promotes transduction of adenovirus type 5 in respiratory epithelial cells
Visa övriga samt affilieringar
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Identifikatorer
URN: urn:nbn:se:umu:diva-27697OAI: oai:DiVA.org:umu-27697DiVA, id: diva2:277188
Tillgänglig från: 2009-11-16 Skapad: 2009-11-16 Senast uppdaterad: 2009-11-16Bibliografiskt granskad
Ingår i avhandling
1. Mechanisms involved in adenovirus binding to and infection of host cells
Öppna denna publikation i ny flik eller fönster >>Mechanisms involved in adenovirus binding to and infection of host cells
2009 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

The adenovirus (Ad) family consists of 52 different human types, which are divided into seven species (A-G). Human Ads cause disease in the respiratory tract, lymphoid tissue, intestine, urinary tract, and/or in the eye. Most, but not all Ads have been demonstrated to use the coxsackie-adenovirus receptor (CAR) as an efficient receptor in vitro, but CAR has been questioned as an in vivo-receptor for various reasons. Thus, there are reasons to believe that Ads use other mechanisms for binding to target cells. In an attempt to investigate the impact of tear fluid during in vitro infection of ocular Ads (i.e. Ad37), using corneal cells, we found that human tear fluid promoted infection of an Ad with pronounced respiratory tropism (i.e. Ad5) used here as a control, but surprisingly not of Ad37. Furthermore using a virus overlay protein blotting assay we found that Ad5 bound to several tear fluid proteins. One of these, human lactoferrin (hLf) which is a component that belongs to the innate immune system in various body fluids, was alone able to promote both binding and infection of all species C Ads (Ad1, Ad2, Ad5, Ad6) in epithelial cells. hLf was also found to promote gene delivery (GFP) from an Ad5-based vector. Further we have identified lactoferricin (Lfcin), the N-terminal part of hLf, as to be responsible for this effect. We also show that plasma, saliva, and tear fluid promote infection of Ad5 in respiratory and ocular epithelial cells, and that plasma promotes infection of Ad31. The component in plasma that is responsible for this effect is likely to be coagulation factor IX (FIX) and X (FX), since both these factors were able to promote binding and infection of Ad5 and/or Ad31 in epithelial cells. Finally, we show that the excess of fiber production from initial Ad infection and the release of fibers before the particle itself is released caused masking of the tropism-specific receptors in both infected and non-infected surrounding cells. This means that the overproduction of fibers affects the ability of Ad to spread within tissues.

We conclude that soluble components in body fluids, such as hLf, FIX, and FX have the ability to mediate binding and infection of selected human Ads (species C and Ad31) in epithelial cells that represent the tropism of these Ads. We suggest that these components may serve as bridges between the virion and the cell surface. This is contributes to the knowledge about Ad lifecycle, and might help to improve the de-/retargeting of gene therapy based on Ad vectors.

Ort, förlag, år, upplaga, sidor
Umeå: Umeå university, 2009. s. 71
Serie
Umeå University medical dissertations, ISSN 0346-6612 ; 1301
Nyckelord
Adenovirus, binding, infection, lactoferrin, coagulation factor IX and X, fiber
Nationell ämneskategori
Medicin och hälsovetenskap
Identifikatorer
urn:nbn:se:umu:diva-27646 (URN)978-91-7264-876-0 (ISBN)
Disputation
2009-12-04, Betula, Byggnad 6M, NUS, Umeå, 09:00 (Engelska)
Opponent
Handledare
Tillgänglig från: 2009-11-16 Skapad: 2009-11-12 Senast uppdaterad: 2018-06-08Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Sök vidare utanför DiVA

GoogleGoogle Scholar

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 194 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf