Evidence map›Paper›PMID 22356764›Full record

ArticleJournal of neuroinflammation2012

Interaction of HmC1q with leech microglial cells: involvement of C1qBP-related molecule in the induction of cell chemotaxis.

Muriel Tahtouh, Annelise Garçon-Bocquet, Françoise Croq, Jacopo Vizioli, Pierre-Eric Sautière, Christelle Van Camp, Michel Salzet, Patricia Nagnan-le Meillour, Joël Pestel, Christophe Lefebvre

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
0.7field-weighted citation impact, top 35% 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

13 citing papers in PubMed, 21 citations in OpenAlex.

  1. ACS nano · 2025
    Article
  2. Evolution of Microglia.Advances in neurobiology · 2024
    Article
  3. Review
  4. Review
  5. A Comparative Biology of Microglia Across Species.Frontiers in cell and developmental biology · 2021
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Calreticulin contributes to C1q-dependent recruitment of microglia in the leech Hirudo medicinalis following a CNS injury.Medical science monitor : international medical journal of experimental and clinical research · 2014
    Article
  11. Review
  12. Article
  13. 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

10 authors at 2 institutions in 1 country.

Muriel TahtouhLaboratoire de Spectrométrie de Masse Biologique Fondamentale et Appliquée - EA4550, Microglial activation group, Université Lille Nord de France, Université Lille 1, IFR 147, bâtiment SN3, 59655 Villeneuve d'Ascq, France.
Annelise Garçon-Bocquet
Françoise Croq
Jacopo Vizioli
Pierre-Eric Sautière
Christelle Van Camp
Michel Salzet
Patricia Nagnan-le Meillour
Joël Pestel
Christophe Lefebvre
Université Lille Nord de France · FRUnité de Glycobiologie Structurale et Fonctionnelle · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn invertebrates, the medicinal leech is considered to be an interesting and appropriate model to study neuroimmune mechanisms. Indeed, this non-vertebrate animal can restore normal function of its central nervous system (CNS) after injury. Microglia accumulation at the damage site has been shown to be required for axon sprouting and for efficient regeneration. We characterized HmC1q as a novel chemotactic factor for leech microglial cell recruitment. In mammals, a C1q-binding protein (C1qBP alias gC1qR), which interacts with the globular head of C1q, has been reported to participate in C1q-mediated chemotaxis of blood immune cells. In this study, we evaluated the chemotactic activities of a recombinant form of HmC1q and its interaction with a newly characterized leech C1qBP that acts as its potential ligand.

methodsRecombinant HmC1q (rHmC1q) was produced in the yeast Pichia pastoris. Chemotaxis assays were performed to investigate rHmC1q-dependent microglia migration. The involvement of a C1qBP-related molecule in this chemotaxis mechanism was assessed by flow cytometry and with affinity purification experiments. The cellular localization of C1qBP mRNA and protein in leech was investigated using immunohistochemistry and in situ hybridization techniques.

resultsrHmC1q-stimulated microglia migrate in a dose-dependent manner. This rHmC1q-induced chemotaxis was reduced when cells were preincubated with either anti-HmC1q or anti-human C1qBP antibodies. A C1qBP-related molecule was characterized in leech microglia.

conclusionsA previous study showed that recruitment of microglia is observed after HmC1q release at the cut end of axons. Here, we demonstrate that rHmC1q-dependent chemotaxis might be driven via a HmC1q-binding protein located on the microglial cell surface. Taken together, these results highlight the importance of the interaction between C1q and C1qBP in microglial activation leading to nerve repair in the medicinal leech.

Indexed as

Amino Acid SequenceAnimalsBiotinylationCarrier ProteinsChemotaxisComplement C1qConserved SequenceElectroporationFlow CytometryGanglia, InvertebrateHirudo medicinalisHumansMicrogliaNervous SystemRecombinant ProteinsRNA, Messengerc1q-binding proteinsCarrier ProteinsComplement C1qRecombinant ProteinsRNA, Messenger

Identifiers

PMID22356764
PMCPMC3298539
OpenAlexW2002110104

What OpenQuestion holds

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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.