Evidence map›Paper›PMID 27089101›Full record

ArticleBiochemistry2016

Discovery and Mechanism of Highly Efficient Cyclic Cell-Penetrating Peptides.

Ziqing Qian, Agnieszka Martyna, Ryan L Hard, Jiang Wang, George Appiah-Kubi, Christopher Coss, Mitch A Phelps, Jeremy S Rossman, Dehua Pei

Abstract read
In one paragraph

Article in Biochemistry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 139 papers.

0numbers the graph read from it
0cells of the map it votes in
139citing 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

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

139 citing papers in PubMed.

  1. A hepcidin homolog fromVirulence · 2026
    Article
  2. Article
  3. Review
  4. Article
  5. Macrocyclic Peptides Containing an Imidazopyridinium (IPJournal of the American Chemical Society · 2026
    Article
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  8. Article
  9. Review
  10. Review
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  12. Article
  13. Article
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  16. Article
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79 more citing papers are in PubMed but not listed here.

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

9 authors.

Ziqing QianDepartment of Chemistry and Biochemistry, The Ohio State University , 484 West 12th Avenue, Columbus, Ohio 43210, United States.
Agnieszka MartynaSchool of Biosciences, University of Kent , Canterbury, CT2 7NJ, United Kingdom.
Ryan L HardDepartment of Chemistry and Biochemistry, The Ohio State University , 484 West 12th Avenue, Columbus, Ohio 43210, United States.
Jiang WangDivision of Pharmaceutics, College of Pharmacy, The Ohio State University , Columbus, Ohio 43210, United States.
George Appiah-KubiDepartment of Chemistry and Biochemistry, The Ohio State University , 484 West 12th Avenue, Columbus, Ohio 43210, United States.
Christopher CossDivision of Pharmaceutics, College of Pharmacy, The Ohio State University , Columbus, Ohio 43210, United States.
Mitch A PhelpsDivision of Pharmaceutics, College of Pharmacy, The Ohio State University , Columbus, Ohio 43210, United States.
Jeremy S RossmanSchool of Biosciences, University of Kent , Canterbury, CT2 7NJ, United Kingdom.
Dehua PeiDepartment of Chemistry and Biochemistry, The Ohio State University , 484 West 12th Avenue, Columbus, Ohio 43210, United States.

Funding

Translational Therapeutics Research Program (TT)P30CA016058 · NCI · OHIO STATE UNIVERSITY · PI WANCAI YANG · 1985 to 2026
$132.3M
Recognition and Catalysis of Phosphotyrosyl ProteinsR01GM062820 · NIGMS · OHIO STATE UNIVERSITY · PI PEI, DEHUA · 2003 to 2015
$3.2M
Cyclic Cell-Penetrating PeptidesR01GM110208 · NIGMS · OHIO STATE UNIVERSITY · PI PEI, DEHUA · 2014 to 2016
$980k
Medical Research Council MR/L00870X/1Medical Research Council MR/L018578/1NCI NIH HHS P30 CA016058NIGMS NIH HHS R01 GM062820NIGMS NIH HHS R01 GM110208
6 · The paper itself

Abstract

Previous cell-penetrating peptides (CPPs) generally have low cytosolic delivery efficiencies, because of inefficient endosomal escape. In this study, a family of small, amphipathic cyclic peptides was found to be highly efficient CPPs, with cytosolic delivery efficiencies of up to 120% (compared to 2.0% for Tat). These cyclic CPPs bind directly to the plasma membrane phospholipids and enter mammalian cells via endocytosis, followed by efficient release from the endosome. Their total cellular uptake efficiency correlates positively with the binding affinity for the plasma membrane, whereas their endosomal escape efficiency increases with the endosomal membrane-binding affinity. The cyclic CPPs induce membrane curvature on giant unilamellar vesicles and budding of small vesicles, which subsequently collapse into amorphous lipid/peptide aggregates. These data suggest that cyclic CPPs exit the endosome by binding to the endosomal membrane and inducing CPP-enriched lipid domains to bud off as small vesicles. Together with their high proteolytic stability, low cytotoxicity, and oral bioavailability, these cyclic CPPs should provide a powerful system for intracellular delivery of therapeutic agents and chemical probes.

Indexed as

Cell-Penetrating PeptidesA549 CellsAnimalsEndosomesHeLa CellsHumansIntracellular MembranesMiceNIH 3T3 CellsPeptides, CyclicPermeabilityCell-Penetrating PeptidesPeptides, Cyclic

Identifiers

PMID27089101
PMCPMC8562596

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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.