Evidence map›Paper›PMID 21520911›Full record

ArticleACS chemical biology2011

Synthesis and activity of thioether-containing analogues of the complement inhibitor compstatin.

Patrick J Knerr, Apostolia Tzekou, Daniel Ricklin, Hongchang Qu, Hui Chen, Wilfred A van der Donk, John D Lambris

Abstract read
In one paragraph

Article in ACS chemical biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

24 citing papers in PubMed, 84 citations in OpenAlex.

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  14. Method development and validation for the quantitation of the complement inhibitor Cp40 in human and cynomolgus monkey plasma by UPLC-ESI-MS.Journal of chromatography. B, Analytical technologies in the biomedical and life sciences · 2017
    Article
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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

7 authors at 2 institutions in 1 country.

Patrick J KnerrDepartment of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States.
Apostolia Tzekou
Daniel Ricklin
Hongchang Qu
Hui Chen
Wilfred A van der Donk
John D Lambris
University of Pennsylvania · USUniversity of Illinois Urbana-Champaign · US

Funding

Role of complement in kidney disorders: from hemodialysis to transportationP01AI068730 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI LAMBRIS, JOHN D · 2007 to 2018
$16.0M
Training Program in Chemistry-Interface with BiologyT32GM070421 · NIGMS · UNIVERSITY OF ILLINOIS URBANA-CHAMPAIGN · PI HERGENROTHER, PAUL · 2005 to 2019
$5.4M
STRUCTURAL-FUNCTIONAL ANALYSIS OF COMPSTATINR01GM062134 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI LAMBRIS, JOHN D · 2001 to 2010
$2.5M
Complement in AMD: Mechanisms and Therapeutic InterventionR01EY020633 · NEI · UNIVERSITY OF PENNSYLVANIA · PI LAMBRIS, JOHN D · 2011 to 2013
$1.8M
Howard Hughes Medical InstituteNEI NIH HHS R01 EY020633NIAID NIH HHS AI068730NIAID NIH HHS P01 AI068730NIGMS NIH HHS GM062134NIGMS NIH HHS R01 GM062134NIGMS NIH HHS T32 GM070421
6 · The paper itself

Abstract

Disulfide bonds are essential for the structural stability and biological activity of many bioactive peptides. However, these bonds are labile to reducing agents, which can limit the therapeutic utility of such peptides. Substitution of a disulfide bond with a reduction-resistant cystathionine bridge is an attractive means of improving stability while imposing minimal structural perturbation to the peptide. We have applied this approach to the therapeutic complement inhibitor compstatin, a disulfide-containing peptide currently in clinical trials for age-related macular degeneration, in an effort to maintain its potent activity while improving its biological stability. Thioether-containing compstatin analogues were produced via solid-phase peptide synthesis utilizing orthogonally protected cystathionine amino acid building blocks and solid-supported peptide cyclization. Overall, the affinity of these analogues for their biological target and potent inhibition of complement activation were largely maintained when compared to those of the parent disulfide-containing peptides. Thus, the improved stability to reduction conferred by the thioether bond makes this new class of compstatin peptides a promising alternative for therapeutic applications. Additionally, the versatility of this synthesis allows for exploration of disulfide-to-thioether substitution in a variety of other therapeutic peptides.

Indexed as

Complement ActivationComplement C3DisulfidesOxidation-ReductionPeptides, CyclicSulfidesComplement C3compstatinDisulfidesPeptides, CyclicSulfides

Identifiers

PMID21520911
PMCPMC3137721
OpenAlexW2030850255

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.