Evidence map›Paper›PMID 28250113›Full record

ArticleJournal of leukocyte biology2017

CXCL12-induced macropinocytosis modulates two distinct pathways to activate mTORC1 in macrophages.

Regina Pacitto, Isabella Gaeta, Joel A Swanson, Sei Yoshida

Open access · greenAbstract read
In one paragraph

Article in Journal of leukocyte biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
3.6field-weighted citation impact, top 8% 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

27 citing papers in PubMed, 47 citations in OpenAlex.

  1. mTOR Signaling in Macrophages: All Depends on the Context.International journal of molecular sciences · 2025
    Review
  2. Review
  3. Article
  4. Article
  5. Chaperone-assisted selective autophagy targets filovirus VP40 as a client and restricts egress of virus particles.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Dark-Side of Exosomes.Advances in experimental medicine and biology · 2021
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Using macropinocytosis for intracellular delivery of therapeutic nucleic acids to tumour cells.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Review
  17. Macropinosomes as units of signal transduction.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Review
  18. Rab8a localisation and activation by Toll-like receptors on macrophage macropinosomes.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Article
  19. Constitutive and stimulated macropinocytosis in macrophages: roles in immunity and in the pathogenesis of atherosclerosis.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Review
  20. The origins and evolution of macropinocytosis.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Review
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

4 authors at 1 institution in 1 country.

Regina PacittoDepartment of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA.
Isabella GaetaDepartment of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA.
Joel A SwansonDepartment of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA.
Sei YoshidaDepartment of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA seiyoshi@umich.edu.
University of Michigan–Ann Arbor · US

Funding

The Regulation of MacropinocytosisR01GM110215 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SWANSON, JOEL A · 2014 to 2017
$1.3M
NIGMS NIH HHS R01 GM110215
6 · The paper itself

Abstract

Although growth factors and chemokines elicit different overall effects on cells-growth and chemotaxis, respectively-and activate distinct classes of cell-surface receptors, nonetheless, they trigger similar cellular activities and signaling pathways. The growth factor M-CSF and the chemokine CXCL12 both stimulate the endocytic process of macropinocytosis, and both activate the mechanistic target of rapamycin complex 1 (mTORC1), a protein complex that regulates cell metabolism. Recent studies of signaling by M-CSF in macrophages identified a role for macropinocytosis in the activation of mTORC1, in which delivery of extracellular amino acids into lysosomes via macropinocytosis was required for activation of mTORC1. Here, we analyzed the regulation of macropinosome (MP) formation in response to CXCL12 and identified 2 roles for macropinocytosis in the activation of mTORC1. Within 5 min of adding CXCL12, murine macrophages increased ruffling, macropinocytosis and amino acid-dependent activation of mTORC1. Inhibitors of macropinocytosis blocked activation of mTORC1, and various isoform-specific inhibitors of type 1 PI3K and protein kinase C (PKC) showed similar patterns of inhibition of macropinocytosis and mTORC1 activity. However, unlike the response to M-CSF, Akt phosphorylation (pAkt) in response to CXCL12 required the actin cytoskeleton and the formation of macropinocytic cups. Quantitative fluorescence microscopy showed that phosphatidylinositol (3,4,5)-trisphosphate (PIP

Indexed as

Amino AcidsAnimalsBone Marrow CellsCell Surface ExtensionsChemokine CXCL12Extracellular SpaceIsoenzymesMacrophagesMechanistic Target of Rapamycin Complex 1Mice, Inbred C57BLModels, BiologicalMultiprotein ComplexesPhosphatidylinositol 3-KinasesPhosphorylationPinocytosisProtein Kinase InhibitorsAmino AcidsChemokine CXCL12IsoenzymesMechanistic Target of Rapamycin Complex 1Multiprotein ComplexesPhosphatidylinositol 3-KinasesProtein Kinase InhibitorsProto-Oncogene Proteins c-aktRibosomal Protein S6 KinasesTOR Serine-Threonine KinasesAktlive-cell imagingPI3K

Identifiers

PMID28250113
PMCPMC5295849
OpenAlexW2532360980

What OpenQuestion holds

Textmetadata
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.