Anionic hexadeca-carboxylate tetrapyrazinoporphyrazine: synthesis and in vitro photodynamic studies of a water-soluble, non-aggregating photosensitizer
Popis výsledku
Identifikátory výsledku
Kód výsledku v IS VaVaI
Nalezeny alternativní kódy
RIV/00216208:11160/16:10326175
Výsledek na webu
DOI - Digital Object Identifier
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Anionic hexadeca-carboxylate tetrapyrazinoporphyrazine: synthesis and in vitro photodynamic studies of a water-soluble, non-aggregating photosensitizer
Popis výsledku v původním jazyce
A sodium salt of zinc tetrapyrazinoporphyrazine bearing eight 3,5-dicarboxylatophenyl substituents (1) was synthesized. The presence of sixteen negative charges in a rigid arrangement on the periphery of the macrocycle inhibited its aggregation in water or buffers at pH > 5.8. Strong aggregation was, however, observed in buffers at pH < 4.8 due to the protonation of carboxylate functions. Fluorescence microscopy revealed that the compound localized to lysosomes and endosomes in cells. The compound's photodynamic activity on HeLa cancer cells (IC50 = 5.7 1.1 μM) was found to be influenced by both pH and interactions with serum proteins. This was demonstrated with a detailed in vitro study based on the inhibition of vacuolar H+-ATPase using bafilomycin A1, which increased the intracellular fluorescence of 1. Compound 1 also formed interactions with serum proteins that partially quenched its excited states; however, they also protected the compound from self-aggregation at low pH.n
Název v anglickém jazyce
Anionic hexadeca-carboxylate tetrapyrazinoporphyrazine: synthesis and in vitro photodynamic studies of a water-soluble, non-aggregating photosensitizer
Popis výsledku anglicky
A sodium salt of zinc tetrapyrazinoporphyrazine bearing eight 3,5-dicarboxylatophenyl substituents (1) was synthesized. The presence of sixteen negative charges in a rigid arrangement on the periphery of the macrocycle inhibited its aggregation in water or buffers at pH > 5.8. Strong aggregation was, however, observed in buffers at pH < 4.8 due to the protonation of carboxylate functions. Fluorescence microscopy revealed that the compound localized to lysosomes and endosomes in cells. The compound's photodynamic activity on HeLa cancer cells (IC50 = 5.7 1.1 μM) was found to be influenced by both pH and interactions with serum proteins. This was demonstrated with a detailed in vitro study based on the inhibition of vacuolar H+-ATPase using bafilomycin A1, which increased the intracellular fluorescence of 1. Compound 1 also formed interactions with serum proteins that partially quenched its excited states; however, they also protected the compound from self-aggregation at low pH.n
Klasifikace
Druh
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
CF - Fyzikální chemie a teoretická chemie
OECD FORD obor
—
Návaznosti výsledku
Projekt
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
RSC Advances
ISSN
2046-2069
e-ISSN
—
Svazek periodika
6
Číslo periodika v rámci svazku
JAN 2016
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
14
Strana od-do
10064-10077
Kód UT WoS článku
000369516100083
EID výsledku v databázi Scopus
2-s2.0-84961316840
Druh výsledku
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP
CF - Fyzikální chemie a teoretická chemie
Rok uplatnění
2016