Evidence map›Paper›PMID 36472164›Full record

ArticleSoft matter2022

A theoretical model of efficient phagocytosis driven by curved membrane proteins and active cytoskeleton forces.

Raj Kumar Sadhu, Sarah R Barger, Samo Penič, Aleš Iglič, Mira Krendel, Nils C Gauthier, Nir S Gov

Open access · greenAbstract read
In one paragraph

Article in Soft matter, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.0field-weighted citation impact, top 5% 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

20 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
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  5. Biomechanics of phagocytosis of red blood cells by macrophages in the human spleen.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  6. Making the cut: Multiscale simulation of membrane remodeling.Current opinion in structural biology · 2024
    Review
  7. Article
  8. Article
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  11. A minimal physical model for curvotaxis driven by curved protein complexes at the cell's leading edge.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
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  19. Article
  20. Role of particle local curvature in cellular wrapping.Journal of the Royal Society, Interface · 2022
    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

7 authors at 5 institutions in 4 countries.

Raj Kumar SadhuDepartment of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot 7610001, Israel. raj-kumar.sadhu@curie.fr.ORCID http://orcid.org/0000-0003-3476-1388
Sarah R BargerMolecular, Cellular, Developmental Biology, Yale University, New Haven, USA.
Samo PeničLaboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia.
Aleš IgličLaboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia.ORCID http://orcid.org/0000-0002-7895-343X
Mira KrendelDepartment of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, USA.ORCID http://orcid.org/0000-0002-7008-9069
Nils C GauthierIFOM, FIRC Institute of Molecular Oncology, Milan, Italy.
Nir S GovDepartment of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot 7610001, Israel. raj-kumar.sadhu@curie.fr.ORCID http://orcid.org/0000-0001-7774-1139
University of Ljubljana · SIWeizmann Institute of Science · ILIFOM · ITSUNY Upstate Medical University · USYale University · US

Funding

Class I myosins regulate protrusive forces at the actin-membrane interfaceR01GM138652 · NIGMS · UPSTATE MEDICAL UNIVERSITY · PI KRENDEL, MIRA, SIROTKIN, VLADIMIR A · 2021 to 2024
$2.4M
NIGMS NIH HHS R01 GM138652
6 · The paper itself

Abstract

Phagocytosis is the process of engulfment and internalization of comparatively large particles by cells, and plays a central role in the functioning of our immune system. We study the process of phagocytosis by considering a simplified coarse grained model of a three-dimensional vesicle, having a uniform adhesion interaction with a rigid particle, and containing curved membrane-bound protein complexes or curved membrane nano-domains, which in turn recruit active cytoskeletal forces. Complete engulfment is achieved when the bending energy cost of the vesicle is balanced by the gain in the adhesion energy. The presence of curved (convex) proteins reduces the bending energy cost by self-organizing with a higher density at the highly curved leading edge of the engulfing membrane, which forms the circular rim of the phagocytic cup that wraps around the particle. This allows the engulfment to occur at much smaller adhesion strength. When the curved membrane-bound protein complexes locally recruit actin polymerization machinery, which leads to outward forces being exerted on the membrane, we found that engulfment is achieved more quickly and at a lower protein density. We consider spherical and non-spherical particles and found that non-spherical particles are more difficult to engulf in comparison to the spherical particles of the same surface area. For non-spherical particles, the engulfment time crucially depends on the initial orientation of the particles with respect to the vesicle. Our model offers a mechanism for the spontaneous self-organization of the actin cytoskeleton at the phagocytic cup, in good agreement with recent high-resolution experimental observations.

Indexed as

ActinsMembrane ProteinsCytoskeletonModels, TheoreticalPhagocytosisActinsMembrane Proteins

Identifiers

PMID36472164
PMCPMC10078962
OpenAlexW4312095484

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.