Evidence map›Paper›PMID 19308295›Full record

ArticleNeoplasia (New York, N.Y.)2009

Depletion of serotonin and selective inhibition of 2B receptor suppressed tumor angiogenesis by inhibiting endothelial nitric oxide synthase and extracellular signal-regulated kinase 1/2 phosphorylation.

Masanori Asada, Satoru Ebihara, Shinsuke Yamanda, Kaijun Niu, Tatsuma Okazaki, Ichiro Sora, Hiroyuki Arai

Open access · goldAbstract read
In one paragraph

Article in Neoplasia (New York, N.Y.), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

39 citing papers in PubMed, 78 citations in OpenAlex.

  1. Review
  2. Cancer and neurotransmitter receptors.Chinese medical journal · 2025
    Review
  3. Serotonergic Regulation in Alzheimer's Disease.International journal of molecular sciences · 2025
    Review
  4. Article
  5. Review
  6. Review
  7. HInternational journal of molecular sciences · 2022
    Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Serotonin Pathway in Cancer.International journal of molecular sciences · 2021
    Review
  17. Review
  18. Article
  19. Article
  20. Review
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

7 authors at 1 institution in 1 country.

Masanori AsadaDepartment of Geriatrics and Gerontology, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan.
Satoru Ebihara
Shinsuke Yamanda
Kaijun Niu
Tatsuma Okazaki
Ichiro Sora
Hiroyuki Arai
Tohoku University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The effects of serotonin (5-HT) on tumor growth are inconsistent. We investigated whether a decreased level of 5-HT affected tumor growth using 5-HT transporter knockout (5-HTT(-/-)) mice, which showed 5-HT depletion. When cancer cells were injected subcutaneously into both 5-HTT(-/-) and 5-HTT(+/+) mice, the tumor growth was markedly attenuated in 5-HTT(-/-) mice. Serotonin levels in the blood, forebrain, and tumors of 5-HTT(-/-) mice bearing tumors were significantly smaller than those of their 5-HTT(+/+) littermates. However, 5-HT did not increase cancer cells' proliferation in vitro. When we applied 5-HTT inhibitors to the wild mice bearing tumors, they did not inhibit tumor growth. The endothelial nitric oxide synthase (eNOS) expressions in tumors were reduced in 5-HTT(-/-) mice compared with 5-HTT(+/+) mice. Stimulations with 5-HT (1-50 microM) induced eNOS expressions in human umbilical vein endothelial cell (HUVEC) in a concentration-dependent manner. When we measured activations of multiple signaling pathways by using a high-throughput phosphospecific antibodies platform, 5-HT stimulated the extracellular signal-regulated kinase 1/2 (ERK1/2) in HUVEC. Moreover, we found that the physiological level of 5-HT induced phosphorylation of both ERK1/2 and eNOS in HUVEC. Human umbilical vein endothelial cell expressed both 5-HT(2B) and 5-HT(2C) receptors. SB204741, a specific 5-HT(2B) receptor inhibitor, blocked 5-HT-induced ERK1/2 and eNOS phosphorylations, whereas RS102221, a specific 5-HT(2C) receptor inhibitor, did not in HUVEC. SB204741 reduced microvessel density in tumors and inhibited the proliferation of HUVEC in vitro. These results suggest that regulation of 5-HT and 5-HT receptors, especially the 5-HT(2B) receptor, may serve as a therapeutic strategy in cancer therapy.

Indexed as

AnimalsEndothelial CellsEnzyme-Linked Immunosorbent AssayFluorescent Antibody TechniqueHumansImmunohistochemistryMaleMiceMice, KnockoutMice, Mutant StrainsMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3Neovascularization, PathologicNitric Oxide Synthase Type IIIPhosphorylationReceptor, Serotonin, 5-HT2BMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3Nitric Oxide Synthase Type IIIReceptor, Serotonin, 5-HT2BSerotoninSerotonin Plasma Membrane Transport Proteins

Identifiers

PMID19308295
PMCPMC2657884
OpenAlexW1275115506

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.