Tetra(3,4-pyrido)porphyrazines Caught in the Cationic Cage: Toward Nanomolar Active Photosensitizers
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články
- MeSH
- buňky 3T3 MeSH
- endoteliální buňky účinky léků MeSH
- fotochemoterapie MeSH
- fotosenzibilizující látky chemická syntéza chemie farmakologie MeSH
- HeLa buňky MeSH
- kationty chemická syntéza chemie farmakologie MeSH
- lidé MeSH
- metaloporfyriny chemická syntéza chemie farmakologie MeSH
- MFC-7 buňky MeSH
- molekulární struktura MeSH
- myši MeSH
- nádorové buňky kultivované MeSH
- pyridiny chemická syntéza chemie farmakologie MeSH
- viabilita buněk účinky léků MeSH
- vztah mezi dávkou a účinkem léčiva MeSH
- vztahy mezi strukturou a aktivitou MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- myši MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- fotosenzibilizující látky MeSH
- kationty MeSH
- metaloporfyriny MeSH
- pyridiny MeSH
Investigation of a series of tetra(3,4-pyrido)porphyrazines (TPyPzs) substituted with hydrophilic substituents revealed important structure-activity relationships for their use in photodynamic therapy (PDT). Among them, a cationic TPyPz derivative with total of 12 cationic charges above, below and in the plane of the core featured a unique spatial arrangement that caught the hydrophobic core in a cage, thereby protecting it fully from aggregation in water. This derivative exhibited exceptionally effective photodynamic activity on a number of tumor cell lines (HeLa, SK-MEL-28, A549, MCF-7) with effective concentrations (EC50) typically below 5 nM, at least an order of magnitude better than the EC50 values obtained for the clinically approved photosensitizers verteporfin, temoporfin, protoporphyrin IX, and trisulfonated hydroxyaluminum phthalocyanine. Its very low dark toxicity (TC50 > 400 μM) and high ability to induce photodamage to endothelial cells (EA.hy926) without preincubation suggest the high potential of this cationic TPyPz derivative in vascular-targeted PDT.
Citace poskytuje Crossref.org
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