Evidence map›Paper›PMID 21719698›Full record

ArticleThe Journal of biological chemistry2011

Intracellular cannabinoid type 1 (CB1) receptors are activated by anandamide.

G Cristina Brailoiu, Tudor I Oprea, Pingwei Zhao, Mary E Abood, Eugen Brailoiu

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
8.1field-weighted citation impact, top 2% 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

58 citing papers in PubMed, 96 citations in OpenAlex.

  1. Review
  2. Article
  3. Ageing, Neurodegeneration and the Endocannabinoid System.Current topics in behavioral neurosciences · 2026
    Review
  4. Review
  5. Anticonvulsant Effects of SyntheticMolecules (Basel, Switzerland) · 2025
    Article
  6. Article
  7. Cannabinoid Receptor Signaling is Dependent on Sub-Cellular Location.bioRxiv : the preprint server for biology · 2024
    Article
  8. Dopamine internalization via UptakeFrontiers in pharmacology · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Mechanism of Diuresis and Natriuresis by Cannabinoids: Evidence for Inhibition of NaThe Journal of pharmacology and experimental therapeutics · 2021
    Article
  16. Article
  17. Review
  18. NAADP Receptors.Cold Spring Harbor perspectives in biology · 2019
    Review
  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

5 authors at 2 institutions in 1 country.

G Cristina BrailoiuDepartment of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140.
Tudor I OpreaDivision of Biocomputing, Department of Biochemistry and Molecular Biology, University of New Mexico School of Medicine, Albuquerque, New Mexico 87131.
Pingwei ZhaoDepartment of Anatomy and Cell Biology and Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and.
Mary E AboodDepartment of Anatomy and Cell Biology and Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and. Electronic address: mabood@temple.edu.
Eugen BrailoiuDepartment of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140. Electronic address: ebrailou@temple.edu.
Temple University · USUniversity of New Mexico · US

Funding

THE ROLE OF ENDOGENOUS OPIOIDS IN SUDDEN INFANT DEATHP50DA005274 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI ABOOD, MARY E · 1988 to 2011
$12.6M
Molecular Characterization of GPR35 and GPR55, Putative Cannabinoid ReceptorsR01DA023204 · NIDA · TEMPLE UNIV OF THE COMMONWEALTH · PI ABOOD, MARY E · 2007 to 2016
$3.2M
Role of nonnuclear estrogen receptor GPR30 in preganglionic vagal neuronsR01HL090804 · NHLBI · TEMPLE UNIV OF THE COMMONWEALTH · PI BRAILOIU, EUGEN · 2009 to 2012
$1.5M
NHLBI NIH HHS HL90804NHLBI NIH HHS R01 HL090804NIDA NIH HHS DA023204NIDA NIH HHS DA05274NIDA NIH HHS P50 DA005274NIDA NIH HHS R01 DA023204
6 · The paper itself

Abstract

Recent studies have demonstrated that the majority of endogenous cannabinoid type 1 (CB(1)) receptors do not reach the cell surface but are instead associated with endosomal and lysosomal compartments. Using calcium imaging and intracellular microinjection in CB(1) receptor-transfected HEK293 cells and NG108-15 neuroblastoma × glioma cells, we provide evidence that anandamide acting on CB(1) receptors increases intracellular calcium concentration when administered intracellularly but not extracellularly. The calcium-mobilizing effect of intracellular anandamide was dose-dependent and abolished by pretreatment with SR141716A, a CB(1) receptor antagonist. The anandamide-induced calcium increase was reduced by blocking nicotinic acid-adenine dinucleotide phosphate- or inositol 1,4,5-trisphosphate-dependent calcium release and abolished when both lysosomal and endoplasmic reticulum calcium release pathways were blocked. Taken together, our results indicate that, in CB(1) receptor-transfected HEK293 cells, intracellular CB(1) receptors are functional; they are located in acid-filled calcium stores (endolysosomes). Activation of intracellular CB(1) receptors releases calcium from endoplasmic reticulum and lysosomal calcium stores. In addition, our results support a novel role for nicotinic acid-adenine dinucleotide phosphate in cannabinoid-induced calcium signaling.

Indexed as

Arachidonic AcidsCalciumCannabinoid Receptor ModulatorsCell Line, TumorDose-Response Relationship, DrugEndocannabinoidsEndosomesHEK293 CellsHumansLysosomesPolyunsaturated AlkamidesReceptor, Cannabinoid, CB1anandamideArachidonic AcidsCalciumCannabinoid Receptor ModulatorsEndocannabinoidsPolyunsaturated AlkamidesReceptor, Cannabinoid, CB1

Identifiers

PMID21719698
PMCPMC3190724
OpenAlexW2088979187

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.