Evidence map›Paper›PMID 25453950›Full record

ArticleBiomaterials2015

Sequential delivery of immunomodulatory cytokines to facilitate the M1-to-M2 transition of macrophages and enhance vascularization of bone scaffolds.

Kara L Spiller, Sina Nassiri, Claire E Witherel, Rachel R Anfang, Johnathan Ng, Kenneth R Nakazawa, Tony Yu, Gordana Vunjak-Novakovic

Open access · greenAbstract read
In one paragraph

Article in Biomaterials, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 344 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
344citing papers in PubMed, 1 pooled it
15.9field-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

344 citing papers in PubMed, 1 synthesis or guideline pooled it, 752 citations in OpenAlex.

  1. Pooled it
  2. Review
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  8. Review
  9. Enhancing Bone Healing with a Priming Stimulus.Life (Basel, Switzerland) · 2026
    Article
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284 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

8 authors at 2 institutions in 1 country.

Kara L SpillerDepartment of Biomedical Engineering, Columbia University, 622 West 168th Street, VC12-234, New York, NY 10032, USA; School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut St., Philadelphia 19104, PA, USA. Electronic address: kspiller@coe.drexel.edu.
Sina NassiriSchool of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut St., Philadelphia 19104, PA, USA. Electronic address: sn463@drexel.edu.
Claire E WitherelSchool of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut St., Philadelphia 19104, PA, USA. Electronic address: cem73@drexel.edu.
Rachel R AnfangDepartment of Biomedical Engineering, Columbia University, 622 West 168th Street, VC12-234, New York, NY 10032, USA. Electronic address: rachel.anfang@gmail.com.
Johnathan NgDepartment of Biomedical Engineering, Columbia University, 622 West 168th Street, VC12-234, New York, NY 10032, USA. Electronic address: jjn2113@columbia.edu.
Kenneth R NakazawaDepartment of Biomedical Engineering, Columbia University, 622 West 168th Street, VC12-234, New York, NY 10032, USA. Electronic address: krn2111@columbia.edu.
Tony YuSchool of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut St., Philadelphia 19104, PA, USA.
Gordana Vunjak-NovakovicDepartment of Biomedical Engineering, Columbia University, 622 West 168th Street, VC12-234, New York, NY 10032, USA. Electronic address: gv2131@columbia.edu.
Columbia University · USDrexel University · US

Funding

Translational Bioreactors - Engineering Complex TissuesP41EB002520 · NIBIB · TUFTS UNIVERSITY MEDFORD · PI KAPLAN, DAVID L. · 2004 to 2018
$16.7M
Craniofacial Tissue EngineeringR01DE016525 · NIDCR · COLUMBIA UNIV NEW YORK MORNINGSIDE · PI VUNJAK-NOVAKOVIC, GORDANA · 2005 to 2017
$5.5M
Electrotherapeutic strategies for connective tissue repairR01AR061988 · NIAMS · TUFTS UNIVERSITY MEDFORD · PI HUNG, CLARK T., KAPLAN, DAVID L. · 2011 to 2015
$3.3M
NIAMS NIH HHS AR061988NIAMS NIH HHS R01 AR061988NIBIB NIH HHS EB002520NIBIB NIH HHS P41 EB002520NIDCR NIH HHS DE016525NIDCR NIH HHS R01 DE016525
6 · The paper itself

Abstract

In normal tissue repair, macrophages exhibit a pro-inflammatory phenotype (M1) at early stages and a pro-healing phenotype (M2) at later stages. We have previously shown that M1 macrophages initiate angiogenesis while M2 macrophages promote vessel maturation. Therefore, we reasoned that scaffolds that promote sequential M1 and M2 polarization of infiltrating macrophages should result in enhanced angiogenesis and healing. To this end, we first analyzed the in vitro kinetics of macrophage phenotype switch using flow cytometry, gene expression, and cytokine secretion analysis. Then, we designed scaffolds for bone regeneration based on modifications of decellularized bone for a short release of interferon-gamma (IFNg) to promote the M1 phenotype, followed by a more sustained release of interleukin-4 (IL4) to promote the M2 phenotype. To achieve this sequential release profile, IFNg was physically adsorbed onto the scaffolds, while IL4 was attached via biotin-streptavidin binding. Interestingly, despite the strong interactions between biotin and streptavidin, release studies showed that biotinylated IL4 was released over 6 days. These scaffolds promoted sequential M1 and M2 polarization of primary human macrophages as measured by gene expression of ten M1 and M2 markers and secretion of four cytokines, although the overlapping phases of IFNg and IL4 release tempered polarization to some extent. Murine subcutaneous implantation model showed increased vascularization in scaffolds releasing IFNg compared to controls. This study demonstrates that scaffolds for tissue engineering can be designed to harness the angiogenic behavior of host macrophages towards scaffold vascularization.

Indexed as

Drug Delivery SystemsAnimalsBiomarkersBone and BonesCell PolarityCytokinesFemaleFlow CytometryGene Expression RegulationHumansImmunohistochemistryImmunologic FactorsImplants, ExperimentalKineticsMacrophagesMice, Inbred C57BLBiomarkersCytokinesImmunologic FactorsBoneCytokinesImmunomodulationMacrophagesRegenerative medicineVascularization

Identifiers

PMID25453950
PMCPMC4312192
OpenAlexW2077796307

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.