Evidence map›Paper›PMID 35145246›Full record

ArticleNature chemistry2022

Tricyclic cell-penetrating peptides for efficient delivery of functional antibodies into cancer cells.

Ole Tietz, Fernando Cortezon-Tamarit, Rod Chalk, Sarah Able, Katherine A Vallis

Open access · greenAbstract read
In one paragraph

Article in Nature chemistry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
12.0field-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

54 citing papers in PubMed, 144 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Bismuth Bicycles.Journal of peptide science : an official publication of the European Peptide Society · 2026
    Review
  8. Atomically Precise Clusterzymes: A Programmable Optoelectronic Platform for Neuroscience.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  9. Review
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Intracellular delivery of proteins for live cell imaging.Journal of controlled release : official journal of the Controlled Release Society · 2025
    Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Ole TietzOxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK.
Fernando Cortezon-TamaritOxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK.ORCID http://orcid.org/0000-0002-2871-7965
Rod ChalkCentre for Medicines Discovery, University of Oxford, Oxford, UK.
Sarah AbleOxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK.ORCID http://orcid.org/0000-0001-7868-9635
Katherine A VallisOxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK. katherine.vallis@oncology.ox.ac.uk.ORCID http://orcid.org/0000-0003-4672-5683
University of Oxford · GB

Funding

Cancer Research UK 22906Cancer Research UK 28736Cancer Research UK A18085Cancer Research UK C5255/A15935Medical Research Council MC_PC_12004Wellcome Trust 106169
6 · The paper itself

Abstract

The intracellular environment hosts a large number of cancer- and other disease-relevant human proteins. Targeting these with internalized antibodies would allow therapeutic modulation of hitherto undruggable pathways, such as those mediated by protein-protein interactions. However, one of the major obstacles in intracellular targeting is the entrapment of biomacromolecules in the endosome. Here we report an approach to delivering antibodies and antibody fragments into the cytosol and nucleus of cells using trimeric cell-penetrating peptides (CPPs). Four trimers, based on linear and cyclic sequences of the archetypal CPP Tat, are significantly more potent than monomers and can be tuned to function by direct interaction with the plasma membrane or escape from vesicle-like bodies. These studies identify a tricyclic Tat construct that enables intracellular delivery of functional immunoglobulin-G antibodies and Fab fragments that bind intracellular targets in the cytosol and nuclei of live cells at effective concentrations as low as 1 μM.

Indexed as

Cell-Penetrating PeptidesNeoplasmsCell MembraneCytosolEndosomesHumansImmunoglobulin GCell-Penetrating PeptidesImmunoglobulin G

Identifiers

PMID35145246
PMCPMC7617065
OpenAlexW4210968794

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.