Evidence map›Paper›PMID 25666181›Full record

ArticleScientific reports2015

A ligand-observed mass spectrometry approach integrated into the fragment based lead discovery pipeline.

Xin Chen, Shanshan Qin, Shuai Chen, Jinlong Li, Lixin Li, Zhongling Wang, Quan Wang, Jianping Lin, Cheng Yang, Wenqing Shui

Abstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
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

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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

17 citing papers in PubMed.

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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.

Xin Chen1] College of Life Sciences, Nankai University, Tianjin 300071, China [2] High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China.
Shanshan Qin1] College of Life Sciences, Nankai University, Tianjin 300071, China [2] High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China.
Shuai Chen1] College of Life Sciences, Nankai University, Tianjin 300071, China [2] High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China.
Jinlong Li1] College of Life Sciences, Nankai University, Tianjin 300071, China [2] State Key Laboratory of Medicinal Chemical and Department of Pharmacy, Nankai University, Tianjin 300071, China.
Lixin LiHigh-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China.
Zhongling Wang1] College of Life Sciences, Nankai University, Tianjin 300071, China [2] High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China.
Quan Wang1] College of Life Sciences, Nankai University, Tianjin 300071, China [2] High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China.
Jianping Lin1] High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China [2] State Key Laboratory of Medicinal Chemical and Department of Pharmacy, Nankai University, Tianjin 300071, China.
Cheng Yang1] High-throughput Molecular Drug Discovery Center, Tianjin Joint Academy of Biotechnology and Medicine, Tianjin 300457, China [2] State Key Laboratory of Medicinal Chemical and Department of Pharmacy, Nankai University, Tianjin 300071, China.
Wenqing Shui1] College of Life Sciences, Nankai University, Tianjin 300071, China [2] Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In fragment-based lead discovery (FBLD), a cascade combining multiple orthogonal technologies is required for reliable detection and characterization of fragment binding to the target. Given the limitations of the mainstream screening techniques, we presented a ligand-observed mass spectrometry approach to expand the toolkits and increase the flexibility of building a FBLD pipeline especially for tough targets. In this study, this approach was integrated into a FBLD program targeting the HCV RNA polymerase NS5B. Our ligand-observed mass spectrometry analysis resulted in the discovery of 10 hits from a 384-member fragment library through two independent screens of complex cocktails and a follow-up validation assay. Moreover, this MS-based approach enabled quantitative measurement of weak binding affinities of fragments which was in general consistent with SPR analysis. Five out of the ten hits were then successfully translated to X-ray structures of fragment-bound complexes to lay a foundation for structure-based inhibitor design. With distinctive strengths in terms of high capacity and speed, minimal method development, easy sample preparation, low material consumption and quantitative capability, this MS-based assay is anticipated to be a valuable addition to the repertoire of current fragment screening techniques.

Indexed as

HepacivirusHepatitis CViral Nonstructural ProteinsDrug DiscoveryMass SpectrometryRNA-Dependent RNA PolymeraseNS-5 protein, hepatitis C virusRNA-Dependent RNA PolymeraseViral Nonstructural Proteins

Identifiers

PMID25666181
PMCPMC4322365

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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.