Evidence map›Paper›PMID 31429730›Full record

ArticleBMC cancer2019

Lipid accumulation impairs natural killer cell cytotoxicity and tumor control in the postoperative period.

Seyedeh Raheleh Niavarani, Christine Lawson, Orneala Bakos, Marie Boudaud, Cory Batenchuk, Samuel Rouleau, Lee-Hwa Tai

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed
9.4field-weighted citation impact, top 1% 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

65 citing papers in PubMed, 115 citations in OpenAlex.

  1. Review
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  18. DBI Mediates the Progression of Ankylosing Spondylitis by Regulating CD56Analytical cellular pathology (Amsterdam) · 2025
    Article
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5 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.

Seyedeh Raheleh NiavaraniDepartment of Anatomy and Cell Biology, Université de Sherbrooke, Pavillon sur la Recherche Appliqué du Cancer at 3201 rue Jean-Mignault, Sherbrooke, QC, J1E 4K8, Canada.
Christine LawsonDepartment of Anatomy and Cell Biology, Université de Sherbrooke, Pavillon sur la Recherche Appliqué du Cancer at 3201 rue Jean-Mignault, Sherbrooke, QC, J1E 4K8, Canada.
Orneala BakosDepartment of Anatomy and Cell Biology, Université de Sherbrooke, Pavillon sur la Recherche Appliqué du Cancer at 3201 rue Jean-Mignault, Sherbrooke, QC, J1E 4K8, Canada.
Marie BoudaudDepartment of Pediatrics, Division of Immunology, Université de Sherbrooke, Sherbrooke, QC, Canada.
Cory BatenchukDepartment of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada.
Samuel RouleauDepartment of Anatomy and Cell Biology, Université de Sherbrooke, Pavillon sur la Recherche Appliqué du Cancer at 3201 rue Jean-Mignault, Sherbrooke, QC, J1E 4K8, Canada.
Lee-Hwa TaiDepartment of Anatomy and Cell Biology, Université de Sherbrooke, Pavillon sur la Recherche Appliqué du Cancer at 3201 rue Jean-Mignault, Sherbrooke, QC, J1E 4K8, Canada. lee-hwa.tai@usherbrooke.ca.ORCID http://orcid.org/0000-0002-1176-4941
Université de Sherbrooke · CAUniversity of Ottawa · CA

Funding

Cancer Research Society Operating GrantCIHR New Investigator AwardCIHR Project Scheme GrantFonds de Recherche du Québec - Santé Researcher/Scholar Junior 1Natural Sciences and Engineering Research Council of Canada Discovery GrantUniversite de Sherbrooke Faculty of Medicine and Health Sciences
6 · The paper itself

Abstract

backgroundNatural killer (NK) cell dysfunction following cancer surgery has been shown to promote metastases. Recent studies demonstrate an emerging role for lipids in the modulation of NK cell innate responses. However, the mechanisms involved in lipid modulation of NK cell postoperative anti-tumor function are unknown. This current study will determine whether the lipid accumulation via scavenger receptors on NK cells is responsible for the increase in postoperative metastasis.

methodsLipid content in mouse and human NK cells was evaluated by flow cytometry. NK cell scavenger receptor (SR) expression was measured by microarray analysis, validated by qRT-PCR and flow cytometry. NK cell ex vivo and in vivo tumor killing was measured by chromium-release and adoptive transfer assays, respectively. The mediating role of surgery-expanded granulocytic myeloid derived suppressor cells (gMDSC) in SR induction on NK cells was evaluated using co-culture assays.

resultsNK cells in surgery-treated mice demonstrated increased lipid accumulation, which occurred via up-regulation of MSR1, CD36 and CD68. NK cells with high lipid content had diminished ability to lyse tumor targets ex vivo. Adoptive transfer of lipid-laden NK cells into NK cell-deficient mice were unable to protect against a lung tumor challenge. Granulocytic MDSC from surgery-treated mice increased SR expression on NK cells. Colorectal cancer surgical patients showed increased NK cell lipid content, higher CD36 expression, decreased granzyme B and perforin production in addition to reduced cytotoxicity in the postoperative period.

conclusionsPostoperative lipid accumulation promotes the formation of metastases by impairing NK cell function in both preclinical surgical models and human surgical colorectal cancer patient samples. Understanding and targeting the mechanisms underlying lipid accumulation in innate immune NK cells can improve prognosis in cancer surgical patients.

Indexed as

Cytotoxicity, ImmunologicAdoptive TransferAnimalsAntigens, CDAntigens, Differentiation, MyelomonocyticCD36 AntigensCD68 MoleculeColorectal NeoplasmsDisease Models, AnimalFemaleGranzymesHumansK562 CellsKiller Cells, NaturalMiceMice, Inbred BALB CAntigens, CDAntigens, Differentiation, MyelomonocyticCD36 AntigensCD68 MoleculeCD68 protein, mouseGranzymesGZMB protein, humanMsr1 protein, mousePalmitic AcidsPerforinPRF1 protein, humanReceptors, ScavengerScavenger Receptors, Class AFatty natural killer cellsImmunometabolismPerioperative immunosuppression

Identifiers

PMID31429730
PMCPMC6701111
OpenAlexW2969912154

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.