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Removal of chromatin by salt‐tolerant endonucleases for production of recombinant measles virus

Overview of attention for article published in Biotechnology Progress, March 2023
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  • Good Attention Score compared to outputs of the same age (70th percentile)
  • High Attention Score compared to outputs of the same age and source (84th percentile)

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Title
Removal of chromatin by salt‐tolerant endonucleases for production of recombinant measles virus
Published in
Biotechnology Progress, March 2023
DOI 10.1002/btpr.3342
Pubmed ID
Authors

Viktoria Mayer, Anna‐Carina Frank, Shirin Preinsperger, Patrick Csar, Petra Steppert, Alois Jungbauer, Patricia Pereira Aguilar

Abstract

Host cell DNA is a critical impurity in downstream processing of enveloped viruses. Especially, DNA in the form of chromatin is often neglected. Endonuclease treatment is an almost mandatory step in manufacturing of viral vaccines. In order to find the optimal performer, four different endonucleases, two of them salt tolerant, were evaluated in downstream processing of recombinant measles virus. Endonuclease treatment was performed under optimal temperature conditions after clarification and before the purification by flow-through chromatography with a core shell chromatography medium: Capto™ Core 700. Virus infectivity was measured by TCID50. DNA and histone presence in process and purified samples was determined using PicoGreen™ assay and Western blot analysis using an anti-histone antibody, respectively. All tested endonucleases allowed the reduction of DNA content improving product purity. The salt-tolerant endonucleases SAN and M-SAN were more efficient in the removal of chromatin compared with the non-salt-tolerant endonucleases Benzonase® and DENARASE®. Removal of chromatin using M-SAN was also possible without the addition of extra salt to the cell culture supernatant. The combination of the endonuclease treatment, using salt-tolerant endonucleases with flow-through chromatography, using core-shell particles, resulted in high purity and purification efficiency. This strategy has all features for a platform downstream process of recombinant measles virus and beyond.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 17 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 17 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 2 12%
Professor 1 6%
Student > Doctoral Student 1 6%
Student > Ph. D. Student 1 6%
Professor > Associate Professor 1 6%
Other 0 0%
Unknown 11 65%
Readers by discipline Count As %
Engineering 2 12%
Biochemistry, Genetics and Molecular Biology 2 12%
Chemical Engineering 1 6%
Unknown 12 71%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 5. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 05 May 2023.
All research outputs
#6,966,283
of 24,721,757 outputs
Outputs from Biotechnology Progress
#927
of 2,471 outputs
Outputs of similar age
#121,155
of 407,073 outputs
Outputs of similar age from Biotechnology Progress
#5
of 26 outputs
Altmetric has tracked 24,721,757 research outputs across all sources so far. This one has received more attention than most of these and is in the 71st percentile.
So far Altmetric has tracked 2,471 research outputs from this source. They receive a mean Attention Score of 4.6. This one has gotten more attention than average, scoring higher than 62% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 407,073 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 70% of its contemporaries.
We're also able to compare this research output to 26 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 84% of its contemporaries.