Evidence map›Paper›PMID 35672453›Full record

ArticleMucosal immunology2022

A single-cell lung atlas of complement genes identifies the mesothelium and epithelium as prominent sources of extrahepatic complement proteins.

Neha Chaudhary, Archana Jayaraman, Christoph Reinhardt, Joshua D Campbell, Markus Bosmann

Open access · hybridAbstract read
In one paragraph

Article in Mucosal immunology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 5% 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

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 45 citations in OpenAlex.

  1. Mucosal immune response in biology, disease prevention and treatment.Signal transduction and targeted therapy · 2025
    Pooled it
  2. Article
  3. Article
  4. Immunology of Sepsis.Clinics in chest medicine · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Review
  12. Article
  13. Potential role of liver-resident CD3JHEP reports : innovation in hepatology · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Review
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 2 countries.

Neha Chaudhary *Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, MA, USA.
Archana Jayaraman *Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, MA, USA.
Christoph ReinhardtCenter for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany.
Joshua D CampbellDivision of Computational Biomedicine, Boston University School of Medicine, Boston, MA, USA.
Markus BosmannPulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, MA, USA. mbosmann@bu.edu.ORCID http://orcid.org/0000-0003-2773-1033
Boston University · USJohannes Gutenberg University Mainz · DE

Funding

BIOLOGY OF THE LUNG--MULTIDISCIPLINARY PROGRAMT32HL007035 · NHLBI · BOSTON UNIVERSITY MEDICAL CAMPUS · PI Darrell N. Kotton, JOSEPH P MIZGERD · 1985 to 2026
$24.3M
New genetic models for C5a receptorsR01HL139641 · NHLBI · BOSTON UNIVERSITY MEDICAL CAMPUS · PI BOSMANN, MARKUS · 2018 to 2022
$2.1M
Integrative clustering of cells and samples using multi-modal single-cell dataR01LM013154 · NLM · BOSTON UNIVERSITY MEDICAL CAMPUS · PI CAMPBELL, JOSHUA D, YAJIMA, MASANAO · 2019 to 2021
$1.1M
NHLBI NIH HHS R01 HL139641NHLBI NIH HHS T32 HL007035NLM NIH HHS R01 LM013154
6 · The paper itself

Abstract

To understand functional duality of the complement system in host defense and lung injury, a more comprehensive view of its localized production in the lung, and the impact of age on complement production are essential. Here, we explored the expression of complement genes through computational analysis of preexisting single cell RNA sequencing data from lung transcriptomes of healthy young (3 months) and old C57BL/6 mice (24 months), and humans. We characterized the distribution of 48 complement genes. Across 28 distinct immune and non-immune cell types in mice, mesothelial cells expressed the greatest number of complement genes (e.g., C1ra, C2, C3), and regulators (e.g., Serping1, Cfh). C5 was abundant in type II alveolar epithelial cells and C1q in interstitial lung macrophages. There were only moderate differences in gene expression between young and old mice. Among 57 human lung cell types, mesothelial cells showed abundant complement expression. A few differences in gene  expression (e.g., FCN1, CFI, C6, C7) were also evident between mice and human lung cells. Our findings present a novel perspective on the expression patterns of complement genes in normal lungs. These findings highlight the potential functions of complement in tissue-specific homeostasis and immunity and may foster a mechanistic understanding of its role in lung health and disease.

Indexed as

Complement System ProteinsLungAnimalsEpitheliumHumansMiceMice, Inbred C57BLComplement System Proteins

Identifiers

PMID35672453
PMCPMC9173662
OpenAlexW4281674456

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.