Evidence map›Paper›PMID 7919537›Full record

ArticleMolecular biology of the cell1994

TrkA cross-linking mimics neuronal responses to nerve growth factor.

D O Clary, G Weskamp, L R Austin, L F Reichardt

Abstract read
In one paragraph

Article in Molecular biology of the cell, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed
5.9field-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

82 citing papers in PubMed, 222 citations in OpenAlex.

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  13. Noise-induced hearing loss: Neuropathic pain via Ntrk1 signaling.Molecular and cellular neurosciences · 2016
    Article
  14. Activity-Dependent Inhibitory Synaptogenesis in Cerebellar Cultures.Brain plasticity (Amsterdam, Netherlands) · 2016
    Review
  15. Article
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22 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

4 authors at 1 institution in 1 country.

D O ClaryDepartment of Physiology, University of California, San Francisco 94143.
G Weskamp
L R Austin
L F Reichardt
University of California, San Francisco · US

Funding

PHS HHS 48100
6 · The paper itself

Abstract

TrkA, a tyrosine kinase receptor, is an essential component of the nerve growth factor (NGF) response pathway. The binding of NGF to the receptor induces receptor autophosphorylation and activation of intracellular signaling pathways, resulting in diverse biological effects. We prepared polyclonal antibodies against the entire extracellular domain of rat trkA produced using a baculovirus expression system. These antibodies specifically recognize rat trkA on antigen blots and in immunoprecipitations. Both IgG and Fab fragments block binding of NGF to trkA expressed by the PC12 cell line. In NGF binding studies using anti-trkA and anti-low-affinity NGF receptor (LNGFR) immunoglobulin (Ig) G, essentially all binding of NGF can be inhibited. The results imply that > or = 97% of the NGF binding sites on PC12 cells are accounted for by trkA and the LNGFR. The binding data also argue that all low-affinity NGF binding sites on PC12 cells reflect interactions with the LNGFR, while all high-affinity sites are trkA dependent. A fraction of the high-affinity (or slow) binding sites seem to require both trkA and the LNGFR. Although the monovalent anti-trkA Fab fragments inhibited the biological effects of NGF, such as induction of tyrosine phosphorylation, and survival and neurite outgrowth of sympathetic neurons, the IgG preparation was not effective as an inhibitor. Instead, the IgG fraction by itself was almost as effective as NGF at stimulating receptor activation, cell survival, and neurite outgrowth. Thus, it appears oligomerization of trkA by antibody-induced cross-linking is sufficient to produce the known cellular effects of NGF.

Indexed as

AnimalsAnimals, NewbornBase SequenceBinding, CompetitiveCloning, MolecularCross-Linking ReagentsDNA, ComplementaryImmunoglobulin Fab FragmentsImmunoglobulin GIn Vitro TechniquesMolecular Sequence DataNerve Growth FactorsNeuronsPC12 CellsPhosphorylationProto-Oncogene ProteinsCross-Linking ReagentsDNA, ComplementaryImmunoglobulin Fab FragmentsImmunoglobulin GNerve Growth FactorsProto-Oncogene ProteinsReceptor Protein-Tyrosine KinasesReceptors, Nerve Growth FactorReceptor, trkA

Identifiers

PMID7919537
PMCPMC301067
OpenAlexW1973863820

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.