Evidence map›Paper›PMID 24742045›Full record

ArticleVirology journal2014

Resolving the titer of murine cytomegalovirus by plaque assay using the M2-10B4 cell line and a low viscosity overlay.

Katherine A Zurbach, Toktam Moghbeli, Christopher M Snyder

Open access · goldAbstract read
In one paragraph

Article in Virology journal, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

44 citing papers in PubMed, 53 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

3 authors at 2 institutions in 1 country.

Katherine A Zurbach
Toktam Moghbeli
Christopher M SnyderDepartment of Microbiology and Immunology, Jefferson Medical College, Kimmel Cancer Center, Thomas Jefferson University, 233 S, 10th St BLSB, rm 526, Philadelphia, PA 19107, USA. christopher.snyder@jefferson.edu.
Sidney Kimmel Cancer Center · USThomas Jefferson University · US

Funding

Selection of inflationary and tissue-resident T cells during MCMV infectionR01AI106810 · NIAID · THOMAS JEFFERSON UNIVERSITY · PI SNYDER, CHRISTOPHER M · 2014 to 2018
$1.7M
Maintenance of the virus-specific T cell equillibrium in chronic MCMV infectionK22AI081866 · NIAID · THOMAS JEFFERSON UNIVERSITY · PI SNYDER, CHRISTOPHER M · 2010 to 2011
$270k
NIAID NIH HHS K22-AI081866NIAID NIH HHS R01 AI106810
6 · The paper itself

Abstract

backgroundMurine cytomegalovirus (MCMV) is increasingly used as an infectious model to investigate host-pathogen interactions in mice. Detailed methods have been published for using primary murine embryonic fibroblasts (MEFs) for preparing stocks and determining viral titers of MCMV. For determining the titer of MCMV by plaque assay, these methods rely on a high viscosity media that restricts viral spreading through the supernatant of the culture, but is also usually too viscous to pipet. Moreover, MEFs must be repeatedly generated and can vary widely from batch-to-batch in purity, proliferation rates, and the development of senescence. In contrast, the M2-10B4 bone marrow stromal cell line (ATCC # CRL-1972), which is also permissive for MCMV, has been reported to produce high-titer stocks of MCMV and has the considerable advantages of growing rapidly and consistently. However, detailed methods using these cells have not been published.

methodsWe modified existing protocols to use M2-10B4 cells for measuring MCMV titers by plaque assay.

resultsWe found that MCMV plaques could be easily resolved on monolayers of M2-10B4 cells. Moreover, plaques formed normally even when cultures of M2-10B4 cells were less than 50% confluent on the day of infection, as long as we also used a reduced viscosity overlay.

conclusionsOverall, our protocol enabled us to use a consistent cell line to assess viral titers, rather than repeatedly producing primary MEFs. It also allowed us to start the assay with 4-fold fewer cells than would be required to generate a confluent monolayer, reducing the lead-time prior to the start of the assay. Finally, the reduced viscosity CMC could be handled by pipet and did not need to be pre-mixed with media, thus increasing its shelf-life and ease-of-use. We describe our results here, along with detailed protocols for the use of the M2-10B4 cell lines to determine the titer and grow stocks of MCMV.

Indexed as

AnimalsCell LineCulture MediaMiceMuromegalovirusViral LoadViral Plaque AssayViscosityCulture Media

Identifiers

PMID24742045
PMCPMC4006460
OpenAlexW2138286114

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.