Evidence map›Paper›PMID 11292727›Full record

ArticleInfection and immunity2001

Chlamydia pneumoniae major outer membrane protein is a surface-exposed antigen that elicits antibodies primarily directed against conformation-dependent determinants.

K Wolf, E Fischer, D Mead, G Zhong, R Peeling, B Whitmire, H D Caldwell

Abstract read
In one paragraph

Article in Infection and immunity, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
6.1field-weighted citation impact, top 3% 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

19 citing papers in PubMed, 68 citations in OpenAlex.

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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

7 authors at 3 institutions in 2 countries.

K WolfLaboratory of Intracellular Parasites, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Rocky Mountain Laboratory, Hamilton, Montana 59840, USA. kwolf@niaid.nih.gov
E Fischer
D Mead
G Zhong
R Peeling
B Whitmire
H D Caldwell
Manitoba Health · CANational Institute of Allergy and Infectious Diseases · USThe University of Texas Health Science Center at San Antonio · US

Funding

Chlamydial Immunity and Vaccine DevelopmentZIAAI000672 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI CALDWELL, HARLAN D · 2009 to 2016
$6.8M
MUCOSAL IMMUNITY TO CHLAMYDIAL INFECTIONZ01AI000672 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI CALDWELL, HARLAN D · 1993 to 2008
$1.4M
Biology Of Chlamydia PneumoniaeZ01AI000848 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI HACKSTADT, DAVID (TED) · 1999 to 2001
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6 · The paper itself

Abstract

The major outer membrane protein (MOMP) of Chlamydia trachomatis serovariants is known to be an immunodominant surface antigen. Moreover, it is known that the C. trachomatis MOMP elicits antibodies that recognize both linear and conformational antigenic determinants. In contrast, it has been reported that the MOMP of Chlamydia pneumoniae is not surface exposed and is immunorecessive. We hypothesized that the discrepancies between C. trachomatis and C. pneumoniae MOMP exposure on intact chlamydiae and immunogenic properties might be because the focus of the host's immune response is directed to conformational epitopes of the C. pneumoniae MOMP. We therefore conducted studies aimed at defining the surface exposure of MOMP and the conformational dominance of MOMP antibodies. We present here a description of C. pneumoniae species-specific monoclonal antibody (MAb), GZD1E8, which recognizes a conformational epitope on the surface of C. pneumoniae. This MAb is potent in the neutralization of C. pneumoniae infectivity in vitro. Another previously described C. pneumoniae species-specific monoclonal antibody, RR-402, displayed very similar characteristics. However, the antigenic determinant recognized by RR-402 has yet to be identified. We show by immunoprecipitation of C. pneumoniae with GZD1E8 and RR-402 MAbs and by mass spectrometry analysis of immunoprecipitated proteins that both antibodies GZD1E8 and RR-402 recognize the MOMP of C. pneumoniae and that this protein is localized on the surface of the organism. We also show that human sera from C. pneumoniae-positive donors consistently recognize the MOMP by immunoprecipitation, indicating that the MOMP of C. pneumoniae is an immunogenic protein. These findings have potential implications for both C. pneumoniae vaccine and diagnostic assay development.

Indexed as

Amino Acid SequenceAntibodies, BacterialAntibodies, MonoclonalBacterial Outer Membrane ProteinsChlamydophila pneumoniaeEpitopesHeLa CellsHumansMolecular Sequence DataPrecipitin TestsProtein ConformationAntibodies, BacterialAntibodies, MonoclonalBacterial Outer Membrane ProteinsEpitopesmajor outer membrane protein, Chlamydia pneumoniae

Identifiers

PMID11292727
PMCPMC98263
OpenAlexW2148851969

What OpenQuestion holds

Textmetadata
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.