Evidence map›Paper›PMID 20558079›Full record

ArticleJournal of photochemistry and photobiology. B, Biology2010

Effect of overall charge and charge distribution on cellular uptake, distribution and phototoxicity of cationic porphyrins in HEp2 cells.

Timothy J Jensen, M Graça H Vicente, Raymond Luguya, Jolanna Norton, Frank R Fronczek, Kevin M Smith

Abstract read
In one paragraph

Article in Journal of photochemistry and photobiology. B, Biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

28 citing papers in PubMed, 92 citations in OpenAlex.

  1. Phototherapy in cancer treatment: strategies and challenges.Signal transduction and targeted therapy · 2025
    Review
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Chemical approaches for the enhancement of porphyrin skeleton-based photodynamic therapy.Journal of enzyme inhibition and medicinal chemistry · 2020
    Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Photodynamic Efficiency: From Molecular Photochemistry to Cell Death.International journal of molecular sciences · 2015
    Review
  19. Photodynamic therapy: current status and future directions.Medical principles and practice : international journal of the Kuwait University, Health Science Centre · 2015
    Review
  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

6 authors at 1 institution in 1 country.

Timothy J JensenDepartment of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA.
M Graça H Vicente
Raymond Luguya
Jolanna Norton
Frank R Fronczek
Kevin M Smith
Louisiana State University · US

Funding

SYNTHESES AND CELLULAR STUDIES OF NEW PHOTOSENSITIZERS FOR MEDICAL APPLICATIONSR01CA132861 · NCI · LOUISIANA STATE UNIV A&M COL BATON ROUGE · PI SMITH, KEVIN M · 2009 to 2013
$1.5M
Tumor-specific agents for cancer imagingR21CA139385 · NCI · LOUISIANA STATE UNIV A&M COL BATON ROUGE · PI VICENTE, MARIA DA GRACA HENRIQUES · 2010 to 2011
$349k
NCI NIH HHS CA132861NCI NIH HHS CA139297NCI NIH HHS R01 CA132861NCI NIH HHS R21 CA139385
6 · The paper itself

Abstract

Five cationic porphyrins bearing one to four -N(CH(3))(3)(+) groups linked to the p-phenyl positions of 5,10,15,20-tetraphenylporphyrin (TPP) were synthesized in order to study the effect of overall charge and its distribution on the cellular uptake, phototoxicity and intracellular localization using human carcinoma HEp2 cells. The di-cationic porphyrins DADP-o and DADP-a accumulated the most within cells and preferentially localize within vesicular compartments and in mitochondria. Of these two only DADP-a was phototoxic to the cells (IC(50)=3 microM at 1 J/cm(2)). The mono-cationic porphyrin MAP was found to be the most phototoxic of the series, and it localized mainly in lipid membranes, including the plasma membrane, ER, mitochondria, and Golgi. Both the tri-cationic porphyrin TRAP and the tetra-cationic porphyrin TEAP localized subcellularly mainly in the mitochondria, but of the two only TEAP showed moderate phototoxicity (IC(50)=8 microM at 1 J/cm(2)). Our results suggest that MAP is the most promising PDT photosensitizer, and that both DADP-o and TRAP might find application as transport vehicles for therapeutics into cells.

Indexed as

Cell Line, TumorCrystallography, X-RayHumansMicroscopy, FluorescenceMolecular ConformationPhotosensitizing AgentsPorphyrinsQuaternary Ammonium CompoundsTime Factors5,10,15,20-tetraphenylporphyrinphenyltrimethylammoniumPhotosensitizing AgentsPorphyrinsQuaternary Ammonium Compounds

Identifiers

PMID20558079
PMCPMC3161426
OpenAlexW2140455276

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.