The DOI matches its Crossref record.
Phagocytosis of Mycobacterium tuberculosis is mediated by human monocyte complement receptors and complement component C3.
Open accessAbstract
We have examined the receptor-ligand interactions and the method of phagocytosis of virulent Mycobacterium tuberculosis by human monocytes. mAb against complement receptors (CR) inhibit adherence and phagocytosis of M. tuberculosis in fresh nonimmune serum. A mAb against the type 1 CR (CR1) inhibits adherence of M. tuberculosis by 40 +/- 5%, and three different mAb against the type 3 CR (CR3) each inhibit adherence by 39 +/- 5% to 47 +/- 4%. A mAb against CR1 used in combination with one of the three mAb against CR3 inhibits adherence by up to 64 +/- 7%. Most strikingly, two mAb used in combination against CR3 inhibit adherence by up to 81 +/- 2%. mAb against other monocyte surface Ag do not significantly influence adherence. In like fashion, mAb against CR but not other monocyte surface Ag inhibit adherence of preopsonized M. tuberculosis in the presence of heat-inactivated serum. By electron microscopy, monocytes ingest all M. tuberculosis that adhere in the presence of nonimmune serum; mAb against CR3 markedly inhibit ingestion. In contrast to CR, the FcR and the beta-glucan-inhibitable receptor for zymosan play little or no role in mediating M. tuberculosis adherence or ingestion. Adherence of M. tuberculosis is serum-dependent, requiring greater than or equal to 2.5% serum for optimal adherence. Heat inactivation of serum markedly reduces adherence of M. tuberculosis (75.5 +/- 7%) and preopsonization of bacteria enhances adherence by 2.9 +/- 0.4-fold. Adherence is also markedly reduced in C3- or factor B-depleted serum; repletion with C3 or factor B increases adherence by 2.1 +/- 0.4-fold and 1.86 +/- 0.05-fold, respectively. Fab anti-C3 IgG markedly inhibits monocyte adherence of preopsonized M. tuberculosis (71 +/- 1%). C component C3 is fixed to M. tuberculosis by the alternative C pathway as determined by a whole bacterial cell ELISA. Human monocytes ingest M. tuberculosis by conventional phagocytosis as viewed by electron microscopy. This study demonstrates that human monocyte CR1 and CR3 mediate phagocytosis of M. tuberculosis and C component C3 in serum is acting as the major bacterium-bound ligand.
Overview
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.
Integrity signals
Registry
Cites
Statistics
Verification
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.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Mechanisms of phagocytosis in macrophages
Aderem, A., & Underhill, D. M. (1999) · Annual Review of Immunology · doi:10.1146/annurev.immunol.17.1.593 · Cited by 2,854
Tuberculosis: Commentary on a Reemergent Killer
Bloom, B. R., & Murray, C. J. L. (1992) · Science · doi:10.1126/science.257.5073.1055 · Cited by 1,373
Sturgill-Koszycki, S., Schlesinger, P. H., Chakraborty, P., Haddix, P. L., Collins, H. L., Fok, A. K., Allen, R. D., Gluck, S. L., Heuser, J., & Russell, D. G. (1994) · Science · doi:10.1126/science.8303277 · Cited by 1,302
Antimicrobial mechanisms of phagocytes and bacterial evasion strategies
Flannagan, R. S., Cosío, G., & Grinstein, S. (2009) · Nature Reviews Microbiology · doi:10.1038/nrmicro2128 · Cited by 947
The Mycobacterium avium complex
Inderlied, C. B., Kemper, C. A., & Bermudez, L. E. (1993) · Clinical Microbiology Reviews · doi:10.1128/cmr.6.3.266 · Cited by 687
Metadata
- Authors
- Schlesinger, L. S., Bellinger-Kawahara, C. G., Payne, N. R., & Horwitz, M. A.
- Venue
- The Journal of Immunology
- Publisher
- Oxford University Press (OUP)
- Published
- 1990-04-01
- Volume
- 144
- Issue
- 7
- Pages
- 2771-2780
- ISSN
- 0022-1767 (ISSN-L)
- 1550-6606
- OpenAlex
- W1557707473
- Cited by
- 539
- References
- 0
- FWCI
- 13.36
- Type
- journal article
- Language
- en
- Open access
- green
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
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Phagocytosis of Mycobacterium tuberculosis is mediated by human monocyte complement receptors and complement component C3. https://app.cochat.ai/papers/10.4049/jimmunol.144.7.2771
- The paper
- Schlesinger, L. S., Bellinger-Kawahara, C. G., Payne, N. R., & Horwitz, M. A. (1990). Phagocytosis of Mycobacterium tuberculosis is mediated by human monocyte complement receptors and complement component C3. The Journal of Immunology. https://doi.org/10.4049/jimmunol.144.7.2771
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
