Cited by 115Inflammasome and immune disordersPhagocytosis and Immune RegulationImmune Response and Inflammation

Secreted Thrombospondin-1 Regulates Macrophage Interleukin-1β Production and Activation through CD47

Open access
Stein, Erica V., Miller, Thomas W., Ivins-O’Keefe, Kelly, Kaur, Sukhbir, Roberts, David D.·2016·Scientific Reports

Abstract

Thrombospondin-1 regulates inflammation by engaging several cell surface receptors and by modulating activities of other secreted factors. We have uncovered a novel role of thrombospondin-1 in modulating production and activation of the proinflammatory cytokine IL-1β by human and murine macrophages. Physiological concentrations of thrombospondin-1 limit the induction by lipopolysaccharide of IL-1β mRNA and total protein production by human macrophages. This inhibition can be explained by the ability of thrombospondin-1 to disrupt the interaction between CD47 and CD14, thereby limiting activation of NFκB/AP-1 by lipopolysaccharide. Only the CD47-binding domain of thrombospondin-1 exhibits this activity. In contrast, CD47, CD36 and integrin-binding domains of thrombospondin-1 independently enhance the inflammasome-dependent maturation of IL-1β in human THP-1 monocyte-derived macrophages. Correspondingly, mouse bone marrow-derived macrophages that lack either thrombospondin-1 or CD47 exhibit diminished induction of mature IL-1β in response to lipopolysaccharide. Lack of CD47 also limits lipopolysaccharide induction of IL-1β, NLRP3 and caspase-1 mRNAs. These data demonstrate that thrombospondin-1 exerts CD47-dependent and -independent pro-and anti-inflammatory effects on the IL-1β pathway. Therefore, thrombospondin-1 and its receptor CD47 may be useful targets for limiting the pro-inflammatory effects of lipopolysaccharide and for treating endotoxemia.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1038/srep19684

Cites

79 of 79 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • THBS1 is a central mediator of immune modulation and anti-angiogenic signaling in senescent niches.

    “THBS1 from senescent fibroblasts was predicted to target macrophages, T/NK cells, and endothelial cells through CD47 and CD36, implicating THBS1 as a central mediator of immune modulation and anti-angiogenic signaling in senescent niches (Figure 6F).64,65,66”

    From Cellular senescence in human liver under normal aging and cancer (2026) · cites this paper as [65]

    The Discussion (page unavailable) describes TSP1/CD47 signaling as regulating macrophage responses, T-cell activation, and dendritic-cell behavior, supporting the immune-modulation part of the claim. It does not establish THBS1 as a central mediator in senescent niches or address anti-angiogenic signaling there. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • THBS1 from senescent fibroblasts was predicted to target macrophages, T/NK cells, and endothelial cells through CD47 and CD36.

    “THBS1 from senescent fibroblasts was predicted to target macrophages, T/NK cells, and endothelial cells through CD47 and CD36, implicating THBS1 as a central mediator of immune modulation and anti-angiogenic signaling in senescent niches (Figure 6F).64,65,66”

    From Cellular senescence in human liver under normal aging and cancer (2026) · cites this paper as [65]

    The introductory passage labeled Abstract describes TSP1 signaling through CD47 and CD36 in macrophages, supporting the macrophage–receptor part of the claim. The Discussion also distinguishes CD47-mediated effects at physiological TSP1 concentrations from CD36 signaling at higher concentrations. Neither passage reports a prediction involving THBS1 from senescent fibroblasts targeting T/NK or endothelial cells, so the full attributed claim is not supported. (LLM, conf=0.87)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. Pfeiffer A. et al. Lipopolysaccharide and ceramide docking to CD14 provokes ligand-specific receptor clustering in rafts. Eur J Immunol 31, 3153– 3164 (2001). 11745332

Cited by

Sorted by citations

Authors
Stein, E. V., Miller, T. W., Ivins-O’Keefe, K., Kaur, S., & Roberts, D. D.
Affiliations
National Institutes of Health (US)
Corresponding author
Roberts, David D.
Venue
Scientific Reports
Published
2016-01-27
Volume
6
Issue
1
Pages
19684-19684
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2259285103
Cited by
115
References
79
Citations by year
2026: 10 · 2025: 14 · 2024: 24 · 2023: 15 · 2022: 9 · 2021: 11 · 2020: 15 · 2019: 2 · 2018: 8 · 2017: 5 · 2016: 2
FWCI
2.95
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
thrombospondin-1, CD47, IL-1β, macrophages, lipopolysaccharide, CD14, NF-κB, AP-1, inflammasome, NLRP3, caspase-1, endotoxemia, inflammation regulation, CD36, integrin-binding domain
MeSH terms
NLR Family, Pyrin Domain-Containing 3 Protein, Adenosine Triphosphate, Animals, Cell Line, Humans, Lipopolysaccharides, Macrophage Activation, Macrophages, Models, Biological, Protein Binding, Signal Transduction, Gene Expression, Mice, Knockout, Lipopolysaccharide Receptors, Thrombospondin 1, Caspase 1, Toll-Like Receptor 4, Mice, CD47 Antigen, Interleukin-1beta

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review