Evidence map›Paper›PMID 19450463›Full record

ArticleBiophysical journal2009

Adaptive-control model for neutrophil orientation in the direction of chemical gradients.

Daniel Irimia, Gábor Balázsi, Nitin Agrawal, Mehmet Toner

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

18 citing papers in PubMed, 28 citations in OpenAlex.

  1. Impact of KRAS mutation on the tumor microenvironment in colorectal cancer.International journal of biological sciences · 2024
    Review
  2. Review
  3. Article
  4. Article
  5. Article
  6. A dual-docking microfluidic cell migration assay (DIntegrative biology : quantitative biosciences from nano to macro · 2017
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Tumor cell migration in complex microenvironments.Cellular and molecular life sciences : CMLS · 2013
    Review
  13. Review
  14. Review
  15. Directional decisions during neutrophil chemotaxis inside bifurcating channels.Integrative biology : quantitative biosciences from nano to macro · 2010
    Article
  16. Microfluidic technologies for temporal perturbations of chemotaxis.Annual review of biomedical engineering · 2010
    Review
  17. Article
  18. Spontaneous migration of cancer cells under conditions of mechanical confinement.Integrative biology : quantitative biosciences from nano to macro · 2009
    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

4 authors at 3 institutions in 1 country.

Daniel IrimiaBioMEMS Resource Center, Center for Engineering in Medicine and Surgical Services, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. dirimia@hms.harvard.edu
Gábor Balázsi
Nitin Agrawal
Mehmet Toner
Shriners Hospitals for Children - Erie · USMassachusetts General Hospital · USThe University of Texas MD Anderson Cancer Center · US

Funding

Bio-MicroElectroMechanical Systems Resource CenterP41EB002503 · NIBIB · MASSACHUSETTS GENERAL HOSPITAL · PI TONER, MEHMET · 2004 to 2018
$17.4M
NIBIB NIH HHS P41 EB002503
6 · The paper itself

Abstract

Neutrophils have a remarkable ability to detect the direction of chemoattractant gradients and move directionally in response to bacterial infections and tissue injuries. For their role in health and disease, neutrophils have been extensively studied, and many of the molecules involved in the signaling mechanisms of gradient detection and chemotaxis have been identified. However, the cellular-scale mechanisms of gradient sensing and directional neutrophil migration have been more elusive, and existent models provide only limited insight into these processes. Here, we propose a what we believe is a novel adaptive-control model for the initiation of cell polarization in response to gradients. In this model, the neutrophils first sample the environment by extending protrusions in random directions and subsequently adapt their sensitivity depending on localized, temporal changes in stimulation levels. Our results suggest that microtubules may play a critical role in integrating all the sensing events from the cellular periphery through their redistribution inside the neutrophils, and may also be involved in modulating local signaling. An unexpected finding was that model neutrophils exhibit significant randomness in timing and directionality of activation, comparable to our experimental observations in microfluidic devices. Moreover, their responses are robust against alterations of the rate and amplitude of the signaling reactions, and for a broad range in chemoattractant concentrations and spatial gradients.

Indexed as

Models, BiologicalBiophysical PhenomenaChemotactic FactorsChemotaxis, LeukocyteCytoskeletonHumansMicrofluidic Analytical TechniquesMicrotubulesNeutrophilsSignal TransductionStochastic ProcessesChemotactic Factors

Identifiers

PMID19450463
PMCPMC2712156
OpenAlexW2158717094

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.