Evidence map›Paper›PMID 12439724›Full record

ArticleBritish journal of cancer2002

Differentiation enhances aminolevulinic acid-dependent photodynamic treatment of LNCaP prostate cancer cells.

B Ortel, D Sharlin, D O'Donnell, A K Sinha, E V Maytin, T Hasan

Open access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

25 citing papers in PubMed, 80 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review of Neurosurgical Fluorescence Imaging Methodologies.IEEE journal of selected topics in quantum electronics : a publication of the IEEE Lasers and Electro-optics Society · 2010
    Article
  19. Low-dose methotrexate enhances aminolevulinate-based photodynamic therapy in skin carcinoma cells in vitro and in vivo.Clinical cancer research : an official journal of the American Association for Cancer Research · 2009
    Article
  20. Vitamin D and differentiation in cancer.Critical reviews in clinical laboratory sciences · 2009
    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

6 authors at 3 institutions in 1 country.

B OrtelWellman Laboratories of Photomedicine WEL-224, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, Massachusetts, MA 02114, USA. ortel@helix.mgh.harvard.edu
D Sharlin
D O'Donnell
A K Sinha
E V Maytin
T Hasan
Massachusetts General Hospital · USHarvard University · USCleveland Clinic · US

Funding

Small Molecule Enhancers of Photodynamic Therapy for Skin CancerP01CA084203 · NCI · MASSACHUSETTS GENERAL HOSPITAL · PI Brian William Pogue · 2001 to 2026
$27.9M
OPTICAL CHERENKOV IMAGING DOSIMETRY IN HUMAN RADIOTHERAPYR01EB023909 · NIBIB · UNIVERSITY OF WISCONSIN-MADISON · PI GLADSTONE, DAVID J., JARVIS, LESLEY A · 2017 to 2024
$4.4M
Targeted Photoactivable Nanocells: Image-based Drug Delivery and Dosimetry in GBMR01CA156177 · NCI · MASSACHUSETTS GENERAL HOSPITAL · PI HASAN, TAYYABA, POGUE, BRIAN WILLIAM · 2011 to 2015
$2.5M
NCI NIH HHS 1P01 CA84203-01NCI NIH HHS P01 CA084203NCI NIH HHS R01 CA156177NIBIB NIH HHS R01 EB023909
6 · The paper itself

Abstract

Photodynamic therapy using 5-aminolevulinic acid (ALA)-induced protoporphyrin IX (PpIX) may be applied to the treatment of neoplasms in a variety of organs. In order to enhance existing regimens of photodynamic therapy, we investigated the effects of adding differentiation therapy to photodynamic therapy in human prostate cancer cells in vitro. The objective of differentiation therapy per se is to reverse the lack of differentiation in cancer cells using pharmacological agents. The motivation for this study was to exploit the differentiation-dependent expression of some heme enzymes to enhance tumour cell toxicity of ALA-photodynamic therapy. A short course of differentiation therapy was applied to increase PpIX formation during subsequent ALA exposure. Using the synthetic androgen R1881, isomers of retinoic acid, and analogues of vitamin D for 3 to 4 days, exogenous ALA-dependent PpIX formation in LNCaP cells was increased, along with markers for growth arrest and for differentiation. As a consequence of higher PpIX levels, cytotoxic effects of visible light exposure were also enhanced. Short-term differentiation therapy increased not only the overall PpIX production but also reduced that fraction of cells that contained low PpIX levels as demonstrated by flow cytometry and fluorescence microscopy. This study suggests that it will be feasible to develop protocols combining short-term differentiation therapy with photodynamic therapy for enhanced photosensitisation.

Indexed as

Cell DifferentiationPhotochemotherapyAminolevulinic AcidFlow CytometryHumansMaleMetribolonePhotosensitizing AgentsProstatic NeoplasmsProtoporphyrinsTestosterone CongenersTretinoinTumor Cells, CulturedVitamin DAminolevulinic AcidMetribolonePhotosensitizing Agentsprotoporphyrin IXProtoporphyrinsTestosterone CongenersTretinoinVitamin D

Identifiers

PMID12439724
PMCPMC2408893
OpenAlexW2052609407

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.