Evidence map›Paper›PMID 32881070›Full record

ArticleJournal of leukocyte biology2021

Neutrophil recruitment by chemokines Cxcl1/KC and Cxcl2/MIP2: Role of Cxcr2 activation and glycosaminoglycan interactions.

Kirti V Sawant, Krishna Mohan Sepuru, Emily Lowry, Brigith Penaranda, Charles W Frevert, Roberto P Garofalo, Krishna Rajarathnam

Open access · greenAbstract read
In one paragraph

Article in Journal of leukocyte biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 103 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
103citing papers in PubMed, 1 pooled it
4.5field-weighted citation impact, top 4% 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

103 citing papers in PubMed, 1 synthesis or guideline pooled it, 147 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Myeloid TLR2 signaling amplifies immunopathology in influenza-infected murine neonates.American journal of respiratory cell and molecular biology · 2026
    Article
  4. Article
  5. Journal of microbiology and biotechnology · 2026
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Cleavage-Resistant CYLD Protects Against Autoimmune Hepatitis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  18. Article
  19. Article
  20. Article

43 more citing papers are in PubMed but not listed here.

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 2 institutions in 1 country.

Kirti V SawantDepartment of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, Texas, USA.
Krishna Mohan SepuruDepartment of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, Texas, USA.ORCID 0000-0002-3675-6294
Emily LowryDepartment of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, Texas, USA.
Brigith PenarandaDepartment of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, Texas, USA.
Charles W FrevertDepartment of Comparative Medicine and Center for Lung Biology, University of Washington, Seattle, WA, USA.
Roberto P GarofaloDepartment of Pediatrics, The University of Texas Medical Branch, Galveston, Texas, USA.
Krishna RajarathnamDepartment of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, Texas, USA.ORCID 0000-0002-0077-700X
The University of Texas Medical Branch at Galveston · USUniversity of Washington · US

Funding

Vector and Transgenic Mouse CoreP30DK017047 · NIDDK · UNIVERSITY OF WASHINGTON · PI Karin E Bornfeldt · 1986 to 2026
$41.4M
Regulation of Allergen-Induced Airway Pathophysiology by VersicanR01AI130280 · NIAID · UNIVERSITY OF WASHINGTON · PI FREVERT, CHARLES WAYNE, HALLSTRAND, TEAL S · 2019 to 2023
$3.8M
Impact of versican deficiency on the innate immune response to influenza virusR01AI136468 · NIAID · UNIVERSITY OF WASHINGTON · PI ALTEMEIER, WILLIAM A, FREVERT, CHARLES WAYNE · 2018 to 2022
$3.1M
Engineered chemokines as therapeutics for bacterial infectionsR21AI135606 · NIAID · UNIVERSITY OF TEXAS MED BR GALVESTON · PI CHOPRA, ASHOK K, RAJARATHNAM, KRISHNA · 2018 to 2019
$499k
Chemokine Synergy and Neutrophil FunctionR21AI124681 · NIAID · UNIVERSITY OF TEXAS MED BR GALVESTON · PI RAJARATHNAM, KRISHNA · 2016 to 2017
$426k
NIAID NIH HHS R01 AI130280NIAID NIH HHS R01 AI136468NIAID NIH HHS R21 AI124681NIAID NIH HHS R21 AI135606NIDDK NIH HHS P30 DK017047
6 · The paper itself

Abstract

Chemokines play a crucial role in combating microbial infection by recruiting blood neutrophils to infected tissue. In mice, the chemokines Cxcl1/KC and Cxcl2/MIP2 fulfill this role. Cxcl1 and Cxcl2 exist as monomers and dimers, and exert their function by activating the Cxcr2 receptor and binding glycosaminoglycans (GAGs). Here, we characterized Cxcr2 G protein and β-arrestin activities, and GAG heparan sulfate (HS) interactions of Cxcl1 and Cxcl2 and of the trapped dimeric variants. To understand how Cxcr2 and GAG interactions impact in vivo function, we characterized their neutrophil recruitment activity to the peritoneum, Cxcr2 and CD11b levels on peritoneal and blood neutrophils, and transport profiles out of the peritoneum. Cxcl2 variants compared with Cxcl1 variants were more potent for Cxcr2 activity. Native Cxcl1 compared with native Cxcl2 and dimers compared with native proteins bound HS with higher affinity. Interestingly, recruitment activity between native Cxcl1 and Cxcl2, between dimers, and between the native protein and the dimer could be similar or very different depending on the dose or the time point. These data indicate that peritoneal neutrophil recruitment cannot be solely attributed to Cxcr2 or GAG interactions, and that the relationship between recruited neutrophils, Cxcr2 activation, GAG interactions, and chemokine levels is complex and highly context dependent. We propose that the ability of Cxcl1 and Cxcl2 to reversibly exist as monomers and dimers and differences in their Cxcr2 activity and GAG interactions coordinate neutrophil recruitment and activation, which play a critical role for successful resolution of inflammation.

Indexed as

Neutrophil InfiltrationAmino Acid SequenceAnimalsBone Marrow CellsCD11b AntigenChemokine CXCL1Chemokine CXCL2FemaleGlycosaminoglycansKineticsMiceMice, Inbred BALB CPeritoneumProtein BindingProtein MultimerizationProtein TransportCD11b AntigenChemokine CXCL1Chemokine CXCL2GlycosaminoglycansReceptors, Interleukin-8BGPCRinflammationleukocytemonomer-dimerproteoglycan

Identifiers

PMID32881070
PMCPMC8296306
OpenAlexW3082526716

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.