Evidence map›Paper›PMID 17325056›Full record

ArticleInfection and immunity2007

Synthesis and characterization of a dipalmitoylated lipopeptide derived from paralogous lipoproteins of Mycoplasma pneumoniae.

Takeshi Into, Jun-ichi Dohkan, Megumi Inomata, Misako Nakashima, Ken-ichiro Shibata, Kenji Matsushita

Abstract read
In one paragraph

Article in Infection and immunity, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.4field-weighted citation impact, top 18% 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

20 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
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  3. Advances in adhesion-related pathogenesis inFrontiers in microbiology · 2025
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  4. Virulence · 2022
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  7. Pathogens (Basel, Switzerland) · 2021
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  8. Frontiers in immunology · 2021
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  12. Review
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  15. Article
  16. Article
  17. Nickel alterations of TLR2-dependent chemokine profiles in lung fibroblasts are mediated by COX-2.American journal of respiratory cell and molecular biology · 2008
    Article
  18. Modulation of asthma and allergy by addressing toll-like receptor 2.Journal of occupational medicine and toxicology (London, England) · 2008
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  19. Article
  20. Article
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

6 authors at 2 institutions in 1 country.

Takeshi IntoDepartment of Oral Disease Research, National Institute for Longevity Sciences, National Center for Geriatrics and Gerontology, 36-3 Gengo, Morioka, Obu, Aichi 474-8522, Japan. into@nils.go.jp
Jun-ichi Dohkan
Megumi Inomata
Misako Nakashima
Ken-ichiro Shibata
Kenji Matsushita
National Center for Geriatrics and Gerontology · JPHokkaido University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Genomic analysis of Mycoplasma pneumoniae revealed the existence of a large number of putative lipoprotein genes compared with the numbers in other bacteria. However, the pathogenic roles of M. pneumoniae lipoproteins are still obscure. In this study, we synthesized a lipopeptide (designated M. pneumoniae paralogous lipoprotein 1 [MPPL-1]) in which an S-dipalmitoylglyceryl cysteine was coupled to a peptide with a consensus sequence of a putative paralogous lipoprotein group characteristic of M. pneumoniae. The cytokine-inducing activity of MPPL-1 in human monocytic cells was much weaker (approximately 700-fold weaker) than that of the known mycoplasmal S-dipalmitoylated lipopeptide FSL-1 or MALP-2. MPPL-1 required Toll-like receptor (TLR2) to activate NF-kappaB-dependent gene transcription in HEK293 cells, although a 1,000-fold-larger amount of MPPL-1 was needed to exert activity similar to that of FSL-1 in the cells. TLR2-mediated recognition of MPPL-1 was synergistically upregulated by TLR6 but not by TLR1 or TLR10, although the activity was still weak. In addition, MPPL-1 did not antagonize FSL-1 recognition in human monocytic cells and TLR2/TLR6-expressing HEK293 cells. Thus, these results suggest that there is preferential selective recognition of diacylated lipopeptides due to the magnitude of an affinity with TLR2 and TLR6 and the roles of increased paralogous lipoprotein genes of M. pneumoniae in evasion of TLR2 recognition.

Indexed as

LipoproteinsPalmitic AcidAmino Acid SequenceCell LineCytokinesDiglyceridesGene Expression RegulationHumansLipopeptidesMacrophage ActivationMolecular Sequence DataMonocytesMycoplasma pneumoniaeOligopeptidesToll-Like Receptor 2Toll-Like ReceptorsCytokinesDiglyceridesFSL-1 lipoprotein, syntheticLipopeptidesLipoproteinsmacrophage stimulatory lipopeptide 2OligopeptidesPalmitic AcidTLR2 protein, humanToll-Like Receptor 2Toll-Like Receptors

Identifiers

PMID17325056
PMCPMC1865785
OpenAlexW2127185670

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.