Cited by 193Cellular transport and secretionAutophagy in Disease and TherapyNanoparticle-Based Drug Delivery

Uses and abuses of macropinocytosis

Bloomfield, Gareth, Kay, Robert R.·2016·Journal of Cell Science

Abstract

Macropinocytosis is a means by which eukaryotic cells ingest extracellular liquid and dissolved molecules. It is widely conserved amongst cells that can take on amoeboid form and, therefore, appears to be an ancient feature that can be traced back to an early stage of evolution. Recent advances have highlighted how this endocytic process can be subverted during pathology – certain cancer cells use macropinocytosis to feed on extracellular protein, and many viruses and bacteria use it to enter host cells. Prion and prion-like proteins can also spread and propagate from cell to cell through macropinocytosis. Progress is being made towards using macropinocytosis therapeutically, either to deliver drugs to or cause cell death by inducing catastrophically rapid fluid uptake. Mechanistically, the Ras signalling pathway plays a prominent and conserved activating role in amoebae and in mammals; mutant amoebae with abnormally high Ras activity resemble tumour cells in their increased capacity for growth using nutrients ingested through macropinocytosis. This Commentary takes a functional and evolutionary perspective to highlight progress in understanding and use of macropinocytosis, which is an ancient feeding process used by single-celled phagotrophs that has now been put to varied uses by metazoan cells and is abused in disease states, including infection and cancer.

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Crossref · 10.1242/jcs.176149

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  • Release of growth factors from macrophages, such as CSF-1, induces macropinocytosis.

    “In fact, release of growth factors from macrophages, such as colony-stimulating factor-1 (CSF-1), induces macropinocytosis [34].”

    From Insights of Endocytosis Signaling in Health and Disease (2023) · cites this paper as [34]

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Authors
Bloomfield, G., & Kay, R. R.
Affiliations
MRC Laboratory of Molecular Biology (GB)
Corresponding author
Bloomfield, Gareth
Venue
Journal of Cell Science
Published
2016-07-15
Volume
129
Issue
14
Pages
2697-2705
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W2467880345
Cited by
193
References
112
Citations by year
2026: 6 · 2025: 10 · 2024: 16 · 2023: 17 · 2022: 20 · 2021: 31 · 2020: 28 · 2019: 28 · 2018: 20 · 2017: 12 · 2016: 4
FWCI
2.30
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cell Science (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
Medical Research Council (MC_U105115237)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
Keywords
macropinocytosis, endocytosis, amoeboid movement, Ras signaling, viral entry, bacterial invasion, prion propagation, prion-like proteins, drug delivery, cell death, phagotrophy
MeSH terms
Animals, Communicable Diseases, Humans, Immunity, Pinocytosis, Prions, Cell Death, Macromolecular Substances

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