Evidence map›Paper›PMID 32327606›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

High-throughput antibody screening from complex matrices using intact protein electrospray mass spectrometry.

William S Sawyer, Neha Srikumar, Joseph Carver, Phillip Y Chu, Amy Shen, Ankai Xu, Ambrose J Williams, Christoph Spiess, Cong Wu, Yichin Liu and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.5field-weighted citation impact, top 4% 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

20 citing papers in PubMed, 56 citations in OpenAlex.

  1. Article
  2. Early-stage drug discovery in a new-generation ultrahigh-throughput mass spectrometry platform.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. A novelmAbs · 2025
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  15. Review
  16. Nanodiscs and Mass Spectrometry: Making Membranes Fly.International journal of mass spectrometry · 2020
    Article
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  19. Review
  20. Article
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.

William S SawyerDepartment of Biochemical and Cellular Pharmacology, Genentech, Inc., South San Francisco, CA 94080.ORCID 0000-0002-7593-1972
Neha SrikumarDepartment of Biochemical and Cellular Pharmacology, Genentech, Inc., South San Francisco, CA 94080.
Joseph CarverDepartment of Cell Culture and Bioprocess Operations, Genentech, Inc., South San Francisco, CA 94080.
Phillip Y ChuDepartment of Biochemical and Cellular Pharmacology, Genentech, Inc., South San Francisco, CA 94080.
Amy ShenDepartment of Cell Culture and Bioprocess Operations, Genentech, Inc., South San Francisco, CA 94080.
Ankai XuDepartment of Purification Development, Genentech, Inc., South San Francisco, CA 94080.
Ambrose J WilliamsDepartment of Purification Development, Genentech, Inc., South San Francisco, CA 94080.
Christoph SpiessDepartment of Antibody Engineering, Genentech, Inc., South San Francisco, CA 94080.ORCID 0000-0002-0570-9700
Cong WuDepartment of Biochemical and Cellular Pharmacology, Genentech, Inc., South San Francisco, CA 94080.ORCID 0000-0003-4314-4197
Yichin LiuDepartment of Biochemical and Cellular Pharmacology, Genentech, Inc., South San Francisco, CA 94080.
John C TranDepartment of Biochemical and Cellular Pharmacology, Genentech, Inc., South San Francisco, CA 94080; john.tran@gene.com.ORCID 0000-0003-1697-9404

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Toward the goal of increasing the throughput of high-resolution mass characterization of intact antibodies, we developed a RapidFire-mass spectrometry (MS) assay using electrospray ionization. We achieved unprecedented screening throughput as fast as 15 s/sample, which is an order of magnitude improvement over conventional liquid chromatography (LC)-MS approaches. The screening enabled intact mass determination as accurate as 7 ppm with baseline resolution at the glycoform level for intact antibodies. We utilized this assay to characterize and perform relative quantitation of antibody species from 248 samples of 62 different cell line clones at four time points in 2 h using RapidFire-time-of-flight MS screening. The screening enabled selection of clones with the highest purity of bispecific antibody production and the results significantly correlated with conventional LC-MS results. In addition, analyzing antibodies from a complex plasma sample using affinity-RapidFire-MS was also demonstrated and qualified. In summary, the platform affords high-throughput analyses of antibodies, including bispecific antibodies and potential mispaired side products, in cell culture media, or other complex matrices.

Indexed as

AntibodiesAntibodies, BispecificCell LineChromatography, LiquidHigh-Throughput Screening AssaysHumansSpectrometry, Mass, Electrospray IonizationAntibodiesAntibodies, Bispecificantibody screeningelectrosprayhigh throughputintact protein mass spectrometry

Identifiers

PMID32327606
PMCPMC7211930
OpenAlexW3020737329

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.