Evidence map›Paper›PMID 25381816›Full record

ArticleOncogene2015

Serine-arginine protein kinase 1 (SRPK1) inhibition as a potential novel targeted therapeutic strategy in prostate cancer.

A Mavrou, K Brakspear, M Hamdollah-Zadeh, G Damodaran, R Babaei-Jadidi, J Oxley, D A Gillatt, M R Ladomery, S J Harper, D O Bates and 1 more

Open access · greenAbstract read
In one paragraph

Article in Oncogene, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed, 1 pooled it
6.7field-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

100 citing papers in PubMed, 1 synthesis or guideline pooled it, 164 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. RNA splicing in health and disease.Molecular biomedicine · 2026
    Review
  5. Review
  6. Review
  7. Article
  8. Review
  9. RNA Splicing as a Therapeutic Target in Cancer.Annual review of pharmacology and toxicology · 2026
    Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. NCellular & molecular biology letters · 2024
    Article
  16. Article
  17. Review
  18. SRPKs: a promising therapeutic target in cancer.Clinical and experimental medicine · 2023
    Review
  19. Article
  20. Article

40 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

11 authors at 4 institutions in 1 country.

A MavrouSchool of Physiology and Pharmacology, University of Bristol, Bristol, UK.
K BrakspearSchool of Physiology and Pharmacology, University of Bristol, Bristol, UK.
M Hamdollah-ZadehSchool of Physiology and Pharmacology, University of Bristol, Bristol, UK.
G DamodaranSchool of Physiology and Pharmacology, University of Bristol, Bristol, UK.
R Babaei-JadidiCancer Biology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK.
J OxleyDepartment of Cellular Pathology, North Bristol NHS Trust, Bristol, UK.
D A GillattDepartment of Urological Sciences, North Bristol NHS Trust, Bristol, UK.
M R LadomeryCentre for Research in Bioscience, Faculty of Health and Applied Sciences, University of the West of England, Bristol, UK.
S J HarperSchool of Physiology and Pharmacology, University of Bristol, Bristol, UK.
D O Bates1] School of Physiology and Pharmacology, University of Bristol, Bristol, UK [2] Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK.
S OlteanSchool of Physiology and Pharmacology, University of Bristol, Bristol, UK.
University of Bristol · GBNorth Bristol NHS Trust · GBUniversity of Nottingham · GBUniversity of the West of England · GB

Funding

Biotechnology and Biological Sciences Research Council BB/J007293/1Biotechnology and Biological Sciences Research Council G10002073Cancer Research UK C11392/A10484Medical Research Council G1002073Medical Research Council MR/K020366/1
6 · The paper itself

Abstract

Angiogenesis is required for tumour growth and is induced principally by vascular endothelial growth factor A (VEGF-A). VEGF-A pre-mRNA is alternatively spliced at the terminal exon to produce two families of isoforms, pro- and anti-angiogenic, only the former of which is upregulated in prostate cancer (PCa). In renal epithelial cells and colon cancer cells, the choice of VEGF splice isoforms is controlled by the splicing factor SRSF1, phosphorylated by serine-arginine protein kinase 1 (SRPK1). Immunohistochemistry staining of human samples revealed a significant increase in SRPK1 expression both in prostate intra-epithelial neoplasia lesions as well as malignant adenocarcinoma compared with benign prostate tissue. We therefore tested the hypothesis that the selective upregulation of pro-angiogenic VEGF in PCa may be under the control of SRPK1 activity. A switch in the expression of VEGF165 towards the anti-angiogenic splice isoform, VEGF165b, was seen in PC-3 cells with SRPK1 knockdown (KD). PC-3 SRPK1-KD cells resulted in tumours that grew more slowly in xenografts, with decreased microvessel density. No effect was seen as a result of SRPK1-KD on growth, proliferation, migration and invasion capabilities of PC-3 cells in vitro. Small-molecule inhibitors of SRPK1 switched splicing towards the anti-angiogenic isoform VEGF165b in PC-3 cells and decreased tumour growth when administered intraperitoneally in an orthotopic mouse model of PCa. Our study suggests that modulation of SRPK1 and subsequent inhibition of tumour angiogenesis by regulation of VEGF splicing can alter prostate tumour growth and supports further studies for the use of SRPK1 inhibition as a potential anti-angiogenic therapy in PCa.

Indexed as

Angiogenesis InhibitorsAnimalsCell Line, TumorCell MovementCell ProliferationHumansMaleMiceMice, NudeNeoplasm InvasivenessNeovascularization, PathologicProstatic NeoplasmsProtein IsoformsProtein Serine-Threonine KinasesRNA SplicingVascular Endothelial Growth Factor AAngiogenesis InhibitorsProtein IsoformsProtein Serine-Threonine KinasesSRPK1 protein, humanVascular Endothelial Growth Factor AVEGFA protein, human

Identifiers

PMID25381816
PMCPMC4351909
OpenAlexW2075555151

What OpenQuestion holds

Textmetadata
LicenceTDM
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.