Evidence map›Paper›PMID 34665619›Full record

ArticleJournal of medicinal chemistry2022

Design of SARS-CoV-2 PLpro Inhibitors for COVID-19 Antiviral Therapy Leveraging Binding Cooperativity.

Zhengnan Shen, Kiira Ratia, Laura Cooper, Deyu Kong, Hyun Lee, Youngjin Kwon, Yangfeng Li, Saad Alqarni, Fei Huang, Oleksii Dubrovskyi and 3 more

Open access · greenAbstract read
In one paragraph

Article in Journal of medicinal chemistry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 112 papers.

0numbers the graph read from it
0cells of the map it votes in
112citing papers in PubMed
11.1field-weighted citation impact, top 1% 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

112 citing papers in PubMed, 208 citations in OpenAlex.

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  12. Discovery of Fragment-Based Inhibitors of SARS-CoV-2 PLJournal of medicinal chemistry · 2026
    Article
  13. Article
  14. Article
  15. Selective Degradation and Inhibition of SARS-CoV-2 3CLInternational journal of molecular sciences · 2025
    Article
  16. Article
  17. Article
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  20. Article

52 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 2 institutions in 1 country.

Zhengnan ShenDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.
Kiira RatiaDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.
Laura CooperDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.
Deyu KongDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.
Hyun LeeDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.ORCID 0000-0003-2570-8120
Youngjin KwonResearch Resources Center, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.
Yangfeng LiDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.
Saad AlqarniDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.
Fei HuangDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.
Oleksii DubrovskyiDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.
Lijun RongDepartment of Microbiology, College of Medicine, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.
Gregory R J ThatcherDepartment of Pharmacology & Toxicology, College of Pharmacy, University of Arizona, Tucson, Arizona 85721, United States.ORCID 0000-0002-7757-1739
Rui XiongDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago (UIC), Chicago, Illinois 60612, United States.ORCID 0000-0002-6350-9037
University of Illinois Chicago · USUniversity of Arizona · US

Funding

Strengthening Stakeholder Engagement in Human Research Protections.UL1TR002003 · NCATS · UNIVERSITY OF ILLINOIS AT CHICAGO · PI KARNIK, NIRANJAN SUBHASH, MERMELSTEIN, ROBIN J. · 2016 to 2024
$33.7M
NCATS NIH HHS UL1 TR002003
6 · The paper itself

Abstract

Antiviral agents that complement vaccination are urgently needed to end the COVID-19 pandemic. The SARS-CoV-2 papain-like protease (PLpro), one of only two essential cysteine proteases that regulate viral replication, also dysregulates host immune sensing by binding and deubiquitination of host protein substrates. PLpro is a promising therapeutic target, albeit challenging owing to featureless P1 and P2 sites recognizing glycine. To overcome this challenge, we leveraged the cooperativity of multiple shallow binding sites on the PLpro surface, yielding novel 2-phenylthiophenes with nanomolar inhibitory potency. New cocrystal structures confirmed that ligand binding induces new interactions with PLpro: by closing of the BL2 loop of PLpro forming a novel "BL2 groove" and by mimicking the binding interaction of ubiquitin with Glu167 of PLpro. Together, this binding cooperativity translates to the most potent PLpro inhibitors reported to date, with slow off-rates, improved binding affinities, and low micromolar antiviral potency in SARS-CoV-2-infected human cells.

Indexed as

COVID-19 Drug TreatmentAntiviral AgentsBinding SitesCoronavirus Papain-Like ProteasesCOVID-19Crystallography, X-RayCysteine Proteinase InhibitorsHumansMicrobial Sensitivity TestsMicrosomes, LiverModels, MolecularPandemicsSurface Plasmon ResonanceTumor Cells, CulturedAntiviral AgentsCoronavirus Papain-Like ProteasesCysteine Proteinase Inhibitorspapain-like protease, SARS-CoV-2

Identifiers

PMID34665619
PMCPMC8547495
OpenAlexW3207670255

What OpenQuestion holds

Textmetadata
LicenceTDM
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.