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An investigation of rhinovirus infection on cellular uptake of poly (glycerol-adipate) nanoparticles.
Abo-Zeid, Yasmin; Williams, Gareth R; Touabi, Lila; McLean, Gary R.
  • Abo-Zeid Y; Department of Pharmaceutics, Faculty of Pharmacy, Helwan University, Cairo, Egypt; UCL School of Pharmacy, University College London, 29 - 39 Brunswick Square, London WC1N 1AX, UK; Cellular and Molecular Immunology Research Centre, London Metropolitan University, 166-220 Holloway Road, London N7 8DB
  • Williams GR; UCL School of Pharmacy, University College London, 29 - 39 Brunswick Square, London WC1N 1AX, UK. Electronic address: g.williams@ucl.ac.uk.
  • Touabi L; Cellular and Molecular Immunology Research Centre, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK. Electronic address: lit0208@my.londonmet.ac.uk.
  • McLean GR; Cellular and Molecular Immunology Research Centre, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK; National Heart and Lung Institute, Imperial College London, Norfolk Place, London W2 1PG, UK. Electronic address: g.mclean@londonmet.ac.uk.
Int J Pharm ; 589: 119826, 2020 Nov 15.
Article in English | MEDLINE | ID: covidwho-733806
ABSTRACT
Viral infections represent 44% of newly emerging infections, and as is shown by the COVID-19 outbreak constitute a major risk to human health and wellbeing. Although there are many efficient antiviral agents, they still have drawbacks such as development of virus resistance and accumulation within off-target organs. Encapsulation of antiviral agents into nanoparticles (NPs) has been shown to improve bioavailability, control release, and reduce side effects. However, there is little quantitative understanding of how the uptake of NPs into virally infected cells compares to uninfected cells. In this work, the uptake of fluorescently labeled polymer NPs was investigated in several models of rhinovirus (RV) infected cells. Different multiplicities of RV infections (MOI) and timings of NPs uptake were also investigated. In some cases, RV infection resulted in a significant increase of NPs uptake, but this was not universally noted. For HeLa cells, RV-A16 and RV-A01 infection elevated NPs uptake upon increasing the incubation time, whereas at later timepoints (6 h) a reduced uptake was noted with RV-A01 infection (owing to decreased cell viability). Beas-2B cells exhibited more complex trends decreases in NPs uptake (cf. uninfected cells) were observed at short incubation times following RV-A01 and RV-A16 infection. At later incubation times (4 h), we found a marked decrease of NPs uptake for RV-A01 infected cells but an increase in uptake with RV-A16 infected cells. Where increases in NPs uptake were found, they were very modest compared to results previously reported for a hepatitis C/ Huh7.5 cell line model. An increase in RV dose (MOI) was not associated with any notable change of NPs uptake. We argue that the diverse endocytic pathways among the different cell lines, together with changes in virus nature, size, and entry mechanism are responsible for these differences. These findings suggest that NPs entry into virally infected cells is a complex process, and further work is required to unravel the different factors which govern this. Undertaking this additional research will be crucial to develop potent nanomedicines for the delivery of antiviral agents.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Polyesters / Rhinovirus / Picornaviridae Infections / Nanoparticles Type of study: Observational study / Prognostic study Limits: Humans Language: English Journal: Int J Pharm Year: 2020 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Polyesters / Rhinovirus / Picornaviridae Infections / Nanoparticles Type of study: Observational study / Prognostic study Limits: Humans Language: English Journal: Int J Pharm Year: 2020 Document Type: Article