Evidence map›Paper›PMID 36420444›Full record

ArticleFrontiers in bioengineering and biotechnology2022

AAV process intensification by perfusion bioreaction and integrated clarification.

João P Mendes, Bárbara Fernandes, Earl Pineda, Shashi Kudugunti, Mike Bransby, René Gantier, Cristina Peixoto, Paula M Alves, António Roldão, Ricardo J S Silva

Open access · goldAbstract read
In one paragraph

Article in Frontiers in bioengineering and biotechnology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.5field-weighted citation impact, top 6% 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

26 citing papers in PubMed, 40 citations in OpenAlex.

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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

10 authors at 3 institutions in 2 countries.

João P MendesiBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal.
Bárbara FernandesiBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal.
Earl PinedaRepligen, Waltham, MA, United States.
Shashi KuduguntiRepligen, Waltham, MA, United States.
Mike BransbyRepligen, Waltham, MA, United States.
René GantierRepligen, Waltham, MA, United States.
Cristina PeixotoiBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal.
Paula M AlvesiBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal.
António RoldãoiBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal.
Ricardo J S SilvaiBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal.
Instituto de Biologia Experimental e Tecnológica · PTRepligen (United States) · USUniversidade Nova de Lisboa · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Adeno-associated viruses (AAVs) demand for clinical trials and approved therapeutic applications is increasing due to this vector's overall success and potential. The high doses associated with administration strategies challenges bioprocess engineers to develop more efficient technologies and innovative strategies capable of increasing volumetric productivity. In this study, alternating tangential flow (ATF) and Tangential Flow Depth filtration (TFDF) techniques were compared as to their potential for 1) implementing a high-cell-density perfusion process to produce AAV8 using mammalian HEK293 cells and transient transfection, and 2) integrating AAV harvest and clarification units into a single step. On the first topic, the results obtained demonstrate that AAV expression improves with a medium exchange strategy. This was evidenced firstly in the small-scale perfusion-mocking study and later verified in the 2 L bioreactor operated in perfusion mode. Fine-tuning the shear rate in ATF and TFDF proved instrumental in maintaining high cell viabilities and, most importantly, enhancing AAV-specific titers (7.6 × 10

Indexed as

adeno-associated virusalternating tangential flowgene therapyintegrated manufacturingperfusionprocess intensificationtangential flow depth filtration

Identifiers

PMID36420444
PMCPMC9676353
OpenAlexW4308450980

What OpenQuestion 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 OpenQuestion graph.