Evidence map›Paper›PMID 34712222›Full record

ArticleFrontiers in immunology2021

A Population of M2 Macrophages Associated With Bone Formation.

Elizabeth Olmsted-Davis, Julio Mejia, Elizabeth Salisbury, Zbigniew Gugala, Alan R Davis

Open access · goldAbstract read
In one paragraph

Article in Frontiers in immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
4.9field-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

23 citing papers in PubMed, 38 citations in OpenAlex.

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  19. The benefits of adipocyte metabolism in bone health and regeneration.Frontiers in cell and developmental biology · 2023
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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

5 authors at 2 institutions in 1 country.

Elizabeth Olmsted-DavisCenter for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital and Houston Methodist Hospital, Houston, TX, United States.
Julio MejiaCenter for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital and Houston Methodist Hospital, Houston, TX, United States.
Elizabeth SalisburyDepartment of Orthopedic Surgery and Rehabilitation, University of Texas Medical Branch, Galveston, TX, United States.
Zbigniew GugalaDepartment of Orthopedic Surgery and Rehabilitation, University of Texas Medical Branch, Galveston, TX, United States.
Alan R DavisCenter for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital and Houston Methodist Hospital, Houston, TX, United States.
Texas Children's Hospital · USThe University of Texas Medical Branch at Galveston · US

Funding

Neural Mechanisms in Heterotopic OssificationR01AR066556 · NIAMS · BAYLOR COLLEGE OF MEDICINE · PI DAVIS, ALAN ROBERT · 2014 to 2018
$1.7M
Epigenetic reprogramming to generate novel chondro-osseous stem cells for bone tissue engineeringR21AR077783 · NIAMS · BAYLOR COLLEGE OF MEDICINE · PI DAVIS, ALAN ROBERT, DAVIS, ELIZABETH ANN · 2020 to 2021
$382k
NIAMS NIH HHS R01 AR066556NIAMS NIH HHS R21 AR077783
6 · The paper itself

Abstract

We previously identified transient brown adipocyte-like cells associated with heterotopic ossification (HO). These ancillary cells support new vessel synthesis essential to bone formation. Recent studies have shown that the M2 macrophage contributes to tissue regeneration in a similar way. To further define the phenotype of these brown adipocyte-like cells they were isolated and characterized by single-cell RNAseq (scRNAseq). Analysis of the transcriptome and the presence of surface markers specific for macrophages suggest that these cells are M2 macrophages. To validate these findings, clodronate liposomes were delivered to the tissues during HO, and the results showed both a significant reduction in these macrophages as well as bone formation. These cells were isolated and shown in culture to polarize towards either M1 or M2 similar to other macrophages. To confirm that these are M2 macrophages, mice received lipopolysacheride (LPS), which induces proinflammation and M1 macrophages. The results showed a significant decrease in this specific population and bone formation, suggesting an essential role for M2 macrophages in the production of bone. To determine if these macrophages are specific to HO, we isolated these cells using fluorescence-activated cell sorting (FACS) from a bone defect model and subjected them to scRNAseq. Surprisingly, the macrophage populations overlapped between the two groups (HO-derived

Indexed as

OsteogenesisAdipocytes, BrownAnimalsCell PlasticityCells, CulturedClodronic AcidDisease Models, AnimalFemoral FracturesFemurLipopolysaccharidesMacrophagesMice, TransgenicOssification, HeterotopicPhagocytosisPhenotypeReceptors, Adrenergic, beta-3Adrb3 protein, mouseClodronic AcidLipopolysaccharidesReceptors, Adrenergic, beta-3brown-fat-like macrophagesheterotopic ossificationM2 macrophagesmacrophage functionsingle-cell RNAseq

Identifiers

PMID34712222
PMCPMC8547272
OpenAlexW3206876795

What OpenQuestion holds

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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.