Evidence map›Paper›PMID 33602850›Full record

ArticleScience (New York, N.Y.)2021

Phage-assisted evolution of botulinum neurotoxin proteases with reprogrammed specificity.

Travis R Blum, Hao Liu, Michael S Packer, Xiaozhe Xiong, Pyung-Gang Lee, Sicai Zhang, Michelle Richter, George Minasov, Karla J F Satchell, Min Dong and 1 more

Open access · greenAbstract read
In one paragraph

Article in Science (New York, N.Y.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

49 citing papers in PubMed, 73 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Promiscuity-Guided Enzyme Evolution via Substrate Multiplexed Screening.Angewandte Chemie (International ed. in English) · 2026
    Review
  5. Article
  6. Review
  7. Article
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  9. Article
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  11. Article
  12. Probing the properties of PTEN specific botulinum toxin type E mutants.Journal of neural transmission (Vienna, Austria : 1996) · 2025
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Targeted degradation of α-Synuclein using an evolved botulinum toxin protease.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 3 institutions in 1 country.

Travis R BlumMerkin Institute of Transformative Technologies in Healthcare, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA.ORCID https://orcid.org/0000-0001-7911-9204
Hao LiuDepartment of Urology, Boston Children's Hospital, Boston, MA 02115, USA.ORCID https://orcid.org/0000-0001-6572-2870
Michael S PackerMerkin Institute of Transformative Technologies in Healthcare, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA.ORCID https://orcid.org/0000-0002-7842-997X
Xiaozhe XiongDepartment of Urology, Boston Children's Hospital, Boston, MA 02115, USA.ORCID https://orcid.org/0000-0001-9493-707X
Pyung-Gang LeeDepartment of Urology, Boston Children's Hospital, Boston, MA 02115, USA.ORCID https://orcid.org/0000-0001-9895-1098
Sicai ZhangDepartment of Urology, Boston Children's Hospital, Boston, MA 02115, USA.ORCID https://orcid.org/0000-0002-8894-5476
Michelle RichterMerkin Institute of Transformative Technologies in Healthcare, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA.ORCID https://orcid.org/0000-0002-6113-6820
George MinasovDepartment of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.ORCID https://orcid.org/0000-0001-5460-3462
Karla J F SatchellDepartment of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.ORCID https://orcid.org/0000-0003-3274-7611
Min DongDepartment of Urology, Boston Children's Hospital, Boston, MA 02115, USA. min.dong@childrens.harvard.edu liu@chemistry.harvard.edu.ORCID https://orcid.org/0000-0002-1744-7293
David R LiuMerkin Institute of Transformative Technologies in Healthcare, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA. min.dong@childrens.harvard.edu liu@chemistry.harvard.edu.ORCID https://orcid.org/0000-0002-9943-7557
Boston Children's Hospital · USBroad Institute · USNorthwestern University · US

Funding

Structure and Function of C. Difficile ToxinsR01AI139087 · NIAID · BOSTON CHILDREN'S HOSPITAL · PI Min Dong, Rongsheng Jin · 2018 to 2026
$7.4M
Long-term effects of botulinum neurotoxins on neuronal viabilityR01NS080833 · NINDS · HARVARD MEDICAL SCHOOL · PI Min Dong · 2013 to 2026
$6.8M
Integrating Chemistry and Evolution to Illuminate Biology and Enable Novel TherapeuticsR35GM118062 · NIGMS · HARVARD UNIVERSITY · PI LIU, DAVID R · 2016 to 2025
$6.4M
ePACE: automation platforms for adaptable and scalable continuous evolution of biomolecules with therapeutic potentialR01EB027793 · NIBIB · BROAD INSTITUTE, INC. · PI Ahmad Samir Khalil, DAVID R LIU · 2019 to 2026
$6.1M
Molecular basis of action and pathogenesis of Clostridium difficile toxin BR01AI132387 · NIAID · BOSTON CHILDREN'S HOSPITAL · PI DONG, MIN · 2017 to 2021
$3.5M
Continuous Evolution of Proteins with Novel Therapeutic PotentialR01EB031172 · NIBIB · BROAD INSTITUTE, INC. · PI LIU, DAVID R · 2021 to 2024
$2.5M
Continuous Evolution of Proteins with Novel Therapeutic PotentialR01EB022376 · NIBIB · HARVARD UNIVERSITY · PI LIU, DAVID R · 2016 to 2019
$1.8M
Molecular mechanism for retrograde transport of tetanus neurotoxinR21NS106159 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI DONG, MIN · 2018 to 2019
$487k
REPROGRAMMING BOTULINUM NEUROTOXIN PROTEASES THROUGH CONTINUOUSEVOLUTION AS A STRATEGY FOR DEVELOPING SELECTIVE INTRACELLULAR THERAPIESF32GM122261 · NIGMS · BROAD INSTITUTE, INC. · PI BLUM, TRAVIS · 2017 to 2019
$179k
HowardHughes Medical Institute,NIAID NIH HHS HHSN272201700060CNIAID NIH HHS R01 AI132387NIAID NIH HHS R01 AI139087NIBIB NIH HHS R01 EB022376NIBIB NIH HHS R01 EB027793NIBIB NIH HHS R01 EB031172NIGMS NIH HHS F32 GM122261NIGMS NIH HHS R35 GM118062NINDS NIH HHS R01 NS080833NINDS NIH HHS R21 NS106159
6 · The paper itself

Abstract

Although bespoke, sequence-specific proteases have the potential to advance biotechnology and medicine, generation of proteases with tailor-made cleavage specificities remains a major challenge. We developed a phage-assisted protease evolution system with simultaneous positive and negative selection and applied it to three botulinum neurotoxin (BoNT) light-chain proteases. We evolved BoNT/X protease into separate variants that preferentially cleave vesicle-associated membrane protein 4 (VAMP4) and Ykt6, evolved BoNT/F protease to selectively cleave the non-native substrate VAMP7, and evolved BoNT/E protease to cleave phosphatase and tensin homolog (PTEN) but not any natural BoNT protease substrate in neurons. The evolved proteases display large changes in specificity (218- to >11,000,000-fold) and can retain their ability to form holotoxins that self-deliver into primary neurons. These findings establish a versatile platform for reprogramming proteases to selectively cleave new targets of therapeutic interest.

Indexed as

Directed Molecular EvolutionProtein EngineeringAnimalsBacteriophage M13Botulinum ToxinsCatalytic DomainCell LineCells, CulturedHumansMutationNeuronsPeptide LibraryProtein DomainsPTEN PhosphohydrolaseRatsR-SNARE ProteinsBotulinum Toxinsbotulinum toxin type Ebotulinum toxin type FPeptide LibraryPTEN PhosphohydrolaseR-SNARE ProteinsVAMP2 protein, humanVAMP4 protein, humanVAMP7 protein, humanVesicle-Associated Membrane Protein 2YKT6 protein, human

Identifiers

PMID33602850
PMCPMC8175023
OpenAlexW3129903208

What OpenQuestion holds

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Registered trials

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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.