Evidence map›Paper›PMID 33771865›Full record

ArticleScience advances2021

Cell-penetrating Alphabody protein scaffolds for intracellular drug targeting.

Erwin Pannecoucke, Maaike Van Trimpont, Johan Desmet, Tim Pieters, Lindy Reunes, Lisa Demoen, Marnik Vuylsteke, Stefan Loverix, Karen Vandenbroucke, Philippe Alard and 10 more

Open access · goldAbstract read
In one paragraph

Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.4field-weighted citation impact, top 39% 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

6 citing papers in PubMed, 10 citations in OpenAlex.

  1. De Novo-Designed Bifunctional Proteins for Targeted Protein Degradation.Journal of the American Chemical Society · 2026
    Article
  2. RSC chemical biology · 2026
    Article
  3. Article
  4. De novo discovery of a molecular glue-like macrocyclic peptide that induces MCL1 homodimerization.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  5. Review
  6. Article
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

20 authors at 2 institutions in 1 country.

Erwin PannecouckeVIB Center for Inflammation Research, 9052 Ghent, Belgium.ORCID 0000-0003-3014-1851
Maaike Van TrimpontDepartment of Biomolecular Medicine, Ghent University, Ghent, Belgium.ORCID 0000-0001-7033-9569
Johan DesmetComplix N.V., 9052 Ghent, Belgium.
Tim PietersDepartment of Biomolecular Medicine, Ghent University, Ghent, Belgium.
Lindy ReunesDepartment of Biomolecular Medicine, Ghent University, Ghent, Belgium.
Lisa DemoenDepartment of Biomolecular Medicine, Ghent University, Ghent, Belgium.ORCID 0000-0001-7035-0266
Marnik VuylstekeGnomixx, 9090 Melle, Belgium.
Stefan LoverixComplix N.V., 9052 Ghent, Belgium.
Karen VandenbrouckeComplix N.V., 9052 Ghent, Belgium.ORCID 0000-0002-5175-262X
Philippe AlardComplix N.V., 9052 Ghent, Belgium.
Paula HenderikxComplix N.V., 9052 Ghent, Belgium.ORCID 0000-0002-7163-8226
Sabrina DerooComplix N.V., 9052 Ghent, Belgium.
Franky BaatzComplix N.V., 9052 Ghent, Belgium.
Eric LorentComplix N.V., 9052 Ghent, Belgium.
Sophie ThiolloyComplix N.V., 9052 Ghent, Belgium.ORCID 0000-0002-8628-7270
Klaartje SomersComplix N.V., 9052 Ghent, Belgium.ORCID 0000-0002-7644-4121
Yvonne McGrathComplix N.V., 9052 Ghent, Belgium.ORCID 0000-0001-6564-7700
Pieter Van VlierbergheDepartment of Biomolecular Medicine, Ghent University, Ghent, Belgium.ORCID 0000-0001-9063-7205
Ignace LastersComplix N.V., 9052 Ghent, Belgium. ignace.lasters@complix.com savvas.savvides@ugent.be.ORCID 0000-0001-5786-2590
Savvas N SavvidesVIB Center for Inflammation Research, 9052 Ghent, Belgium. ignace.lasters@complix.com savvas.savvides@ugent.be.ORCID 0000-0003-3420-5947
Ablynx (Belgium) · BEGhent University · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The therapeutic scope of antibody and nonantibody protein scaffolds is still prohibitively limited against intracellular drug targets. Here, we demonstrate that the Alphabody scaffold can be engineered into a cell-penetrating protein antagonist against induced myeloid leukemia cell differentiation protein MCL-1, an intracellular target in cancer, by grafting the critical B-cell lymphoma 2 homology 3 helix of MCL-1 onto the Alphabody and tagging the scaffold's termini with designed cell-penetration polypeptides. Introduction of an albumin-binding moiety extended the serum half-life of the engineered Alphabody to therapeutically relevant levels, and administration thereof in mouse tumor xenografts based on myeloma cell lines reduced tumor burden. Crystal structures of such a designed Alphabody in complex with MCL-1 and serum albumin provided the structural blueprint of the applied design principles. Collectively, we provide proof of concept for the use of Alphabodies against intracellular disease mediators, which, to date, have remained in the realm of small-molecule therapeutics.

Indexed as

NeoplasmsPeptidesAnimalsApoptosisCell LineCell Line, TumorDrug Delivery SystemsHumansMiceMyeloid Cell Leukemia Sequence 1 ProteinMyeloid Cell Leukemia Sequence 1 ProteinPeptides

Identifiers

PMID33771865
PMCPMC7997521
OpenAlexW3136842158

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.