2021
Alkaloid Escholidine and Its Interaction with DNA Structures
JAROŠOVÁ, Petra, Pavel HANNIG, Kateřina KOLKOVÁ, Stefania MAZZINI, Eva TÁBORSKÁ et. al.Základní údaje
Originální název
Alkaloid Escholidine and Its Interaction with DNA Structures
Autoři
JAROŠOVÁ, Petra (203 Česká republika, domácí), Pavel HANNIG (203 Česká republika, domácí), Kateřina KOLKOVÁ (203 Česká republika, domácí), Stefania MAZZINI, Eva TÁBORSKÁ (203 Česká republika, domácí), Raimundo GARGALLO, Gigliola BORGONOVO, Roberto ARTALI a Petr TÁBORSKÝ (203 Česká republika, garant, domácí)
Vydání
BIOLOGY-BASEL, BASEL, MDPI, 2021, 2079-7737
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10406 Analytical chemistry
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.168
Kód RIV
RIV/00216224:14310/21:00123605
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000736252100001
Klíčová slova anglicky
escholidine; G-quadruplex; DNA; cancer; alkaloid; spectroscopy
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 23. 2. 2024 09:32, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
Simple Summary Escholidine is a rare protoberberine alkaloid present in trace amounts in roots of Eschscholtzia californica and in the aerial parts of Hunnemannia fumariaefolia. Due to the characteristic charged structure, it can interact with various forms of nucleic acids, including non-canonical structures. A series of spectroscopic experiments have shown notable melting stabilization of antiparallel G-quadruplex sequence DL40 induced by escholidine (Delta T-m = 5.2 degrees C). Interaction stoichiometry calculated from fluorescence titration curves was estimated to be 4:1 or 5:1 (alkaloid:DNA). Nuclear Magnetic Resonance (NMR) experiments have confirmed that an external loop binding is likely responsible for this stabilization. The three-dimensional model of the complex between escholidine and DL40, obtained as a result of the molecular docking experiment, implies the preferred orientation of escholidine to the quadruplex structure. Since the stabilization of telomeric G-quadruplex structures by small ligands is often used as a strategy in anti-cancer therapy, alkaloid escholidine seems to be an interesting agent from a medicinal point of view. Berberine, the most known quaternary protoberberine alkaloid (QPA), has been reported to inhibit the SIK3 protein connected with breast cancer. Berberine also appears to reduce the bcl-2 and XIAP expression-proteins responsible for the inhibition of apoptosis. As some problems in the therapy with berberine arose, we studied the DNA binding properties of escholidine, another QPA alkaloid. CD, fluorescence, and NMR examined models of i-motif and G-quadruplex sequences present in the n-myc gene and the c-kit gene. We provide evidence that escholidine does not induce stabilization of the i-motif sequences, while the interaction with G-quadruplex structures appears to be more significant.
Návaznosti
LM2018127, projekt VaV |
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MUNI/A/1192/2020, interní kód MU |
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