Evidence map›Paper›PMID 38664752›Full record

ArticleBMC biotechnology2024

Analysis of the impact of pluronic acid on the thermal stability and infectivity of AAV6.2FF.

Sylvia P Thomas, Marcus M Spinelli, Amira D Rghei, Jordyn A Lopes, Nicole Zielinska, Benjamin M McLeod, Yanlong Pei, Wei Zhang, Bernard Thebaud, Khalil Karimi and 1 more

Open access · goldAbstract read
In one paragraph

Article in BMC biotechnology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.1field-weighted citation impact, top 21% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 2 citations in OpenAlex.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 2 institutions in 1 country.

Sylvia P ThomasDepartment of Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
Marcus M SpinelliDepartment of Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
Amira D RgheiDepartment of Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
Jordyn A LopesDepartment of Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
Nicole ZielinskaDepartment of Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
Benjamin M McLeodDepartment of Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
Yanlong PeiDepartment of Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
Wei ZhangDepartment of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
Bernard ThebaudThe Ottawa Hospital Research Institute, Ottawa, ON, K1Y 4E9, Canada.
Khalil KarimiDepartment of Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
Sarah K WoottonDepartment of Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada. kwootton@uoguelph.ca.
University of Guelph · CAOttawa Hospital Research Institute

Funding

CIHR CHRP-2019-549701-20
6 · The paper itself

Abstract

backgroundThe advancement of AAV vectors into clinical testing has accelerated rapidly over the past two decades. While many of the AAV vectors being utilized in clinical trials are derived from natural serotypes, engineered serotypes are progressing toward clinical translation due to their enhanced tissue tropism and immune evasive properties. However, novel AAV vectors require formulation and stability testing to determine optimal storage conditions prior to their use in a clinical setting.

resultsHere, we evaluated the thermal stability of AAV6.2FF, a rationally engineered capsid with strong tropism for lung and muscle, in two different buffer formulations; phosphate buffered saline (PBS), or PBS supplemented with 0.001% non-ionic surfactant Pluronic F68 (PF-68). Aliquots of AAV6.2FF vector encoding the firefly luciferase reporter gene (AAV6.2FF-ffLuc) were incubated at temperatures ranging from -20°C to 55°C for varying periods of time and the impact on infectivity and particle integrity evaluated. Additionally, the impact of several rounds of freeze-thaw treatments on the infectivity of AAV6.2FF was investigated. Vector infectivity was measured by quantifying firefly luciferase expression in HEK 293 cells and AAV particle integrity was measured by qPCR quantification of encapsidated viral DNA.

conclusionsOur data demonstrate that formulating AAV6.2FF in PBS containing 0.001% PF-68 leads to increased stability and particle integrity at temperatures between -20℃ to 21℃ and protection against the destructive effects of freeze-thaw. Finally, AAV6.2FF-GFP formulated in PBS supplemented with 0.001% PF-68 displayed higher transduction efficiency in vivo in murine lung epithelial cells following intranasal administration than vector buffered in PBS alone further demonstrating the beneficial properties of PF-68.

Indexed as

DependovirusGenetic VectorsPoloxamerAnimalsGenes, ReporterHEK293 CellsHumansLuciferases, FireflyMiceTemperatureLuciferases, FireflyPoloxamerAAV6.2FFAdeno-associated virus (AAV)CryostabilityIntranasalLung transductionPF-68Pluronic acidThermal stability

Identifiers

PMID38664752
PMCPMC11045451
OpenAlexW4395467210

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.