Evidence map›Paper›PMID 15448211›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2004

Molecular profiling reveals synaptic release machinery in Merkel cells.

Henry Haeberle, Mika Fujiwara, Jody Chuang, Michael M Medina, Mayuri V Panditrao, Susanne Bechstedt, Jonathon Howard, Ellen A Lumpkin

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 95 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
95citing papers in PubMed, 2 pooled it
3.9field-weighted citation impact, top 6% 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

95 citing papers in PubMed, 2 syntheses or guidelines pooled it, 190 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Pharmacologic reversion of Merkel cell carcinoma via CBP/p300 inhibition.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Article
  7. Merkel cell stimulation in fear and sensory signaling.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Sensory cells in tunicates: insights into mechanoreceptor evolution.Frontiers in cell and developmental biology · 2024
    Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Review
  18. Review
  19. [Research advances on the function of skin touch receptor Merkel cells].Zhonghua shao shang yu chuang mian xiu fu za zhi · 2022
    Article
  20. Article

35 more citing papers are in PubMed but not listed here.

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

8 authors at 1 institution in 1 country.

Henry HaeberleDepartment of Physiology, University of California-San Francisco, 600 16th Street, San Francisco, CA 94143-2280, USA.
Mika Fujiwara
Jody Chuang
Michael M Medina
Mayuri V Panditrao
Susanne Bechstedt
Jonathon Howard
Ellen A Lumpkin
Max Planck Institute of Molecular Cell Biology and Genetics · DE

Funding

Mechanisms of mechanosensory transduction in Merkel cellsR01AR051219 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LUMPKIN, ELLEN A · 2004 to 2020
$6.0M
NIAMS NIH HHS AR 051219NIAMS NIH HHS R01 AR051219
6 · The paper itself

Abstract

Merkel cell-neurite complexes are somatosensory receptors that initiate the perception of gentle touch. The role of epidermal Merkel cells within these complexes is disputed. To ask whether Merkel cells are genetically programmed to be excitable cells that may participate in touch reception, we purified Merkel cells from touch domes and used DNA microarrays to compare gene expression in Merkel cells and other epidermal cells. We identified 362 Merkel-cell-enriched transcripts, including neuronal transcription factors, presynaptic molecules, and ion-channel subunits. Antibody staining of skin sections showed that Merkel cells are immunoreactive for presynaptic proteins, including piccolo, Rab3C, vesicular glutamate transporter 2, and cholecystokinin 26-33. These data indicate that Merkel cells are poised to release glutamate and neuropeptides. Finally, by using Ca(2+) imaging, we discovered that Merkel cells have L- and P/Q-type voltage-gated Ca(2+) channels, which have been shown to trigger vesicle release at synapses. These results demonstrate that Merkel cells are excitable cells and suggest that they release neurotransmitters to shape touch sensitivity.

Indexed as

AnimalsCell SeparationGene Expression ProfilingIon ChannelsMechanotransduction, CellularMerkel CellsMiceMice, TransgenicNerve Tissue ProteinsNeurons, AfferentOligonucleotide Array Sequence AnalysisSynaptic TransmissionTranscription FactorsIon ChannelsNerve Tissue ProteinsTranscription Factors

Identifiers

PMID15448211
PMCPMC521975
OpenAlexW2118163741

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.