Para-N-Methylpyridinium Pyrenes: Impact of Positive Charge on ds-DNA/RNA and Protein Recognition, Photo-Induced Bioactivity, and Intracellular Localisation

Košćak, Marta; Pehar, Isabela; Božinović, Ksenija; Kumar Kole, Goutam; Sobočanec, Sandra; Podgorski, Iva I.; Pinterić, Marija; Müller-Buschbaum, Klaus; Majhen, Dragomira; Piantanida, Ivo; Marder, Todd B.

doi:10.3390/pharmaceutics14112499

Pregled bibliografske jedinice broj: 1232159

Para-N-Methylpyridinium Pyrenes: Impact of Positive Charge on ds- DNA/RNA and Protein Recognition, Photo-Induced Bioactivity, and Intracellular Localisation

Košćak, Marta; Pehar, Isabela; Božinović, Ksenija; Kumar Kole, Goutam; Sobočanec, Sandra; Podgorski, Iva I.; Pinterić, Marija; Müller-Buschbaum, Klaus; Majhen, Dragomira; Piantanida, Ivo; Marder, Todd B.

Para-N-Methylpyridinium Pyrenes: Impact of Positive Charge on ds- DNA/RNA and Protein Recognition, Photo-Induced Bioactivity, and Intracellular Localisation // Pharmaceutics, 14 (2022), 11; 2499, 22 doi:10.3390/pharmaceutics14112499 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 1232159 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Para-N-Methylpyridinium Pyrenes: Impact of Positive Charge on ds- DNA/RNA and Protein Recognition, Photo-Induced Bioactivity, and Intracellular Localisation

Autori
Košćak, Marta ; Pehar, Isabela ; Božinović, Ksenija ; Kumar Kole, Goutam ; Sobočanec, Sandra ; Podgorski, Iva I. ; Pinterić, Marija ; Müller-Buschbaum, Klaus ; Majhen, Dragomira ; Piantanida, Ivo ; Marder, Todd B.

Izvornik
Pharmaceutics (1999-4923) 14 (2022), 11; 2499, 22

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
N-methylpyridinium pyrene ; DNA sensing ; protein sensing ; singlet oxygen ; photodynamic therapy ; fluorescence ; theranostics

Sažetak
The 2- and 2, 7- substituted para-N-methylpyridinium pyrene cations show high-affinity intercalation into ds-DNAs, whereas their non- methylated analogues interacted with ds-DNA/RNA only in the protonated form (at pH 5), but not at physiological conditions (pH 7). The fluorescence from non-methylated analogues was strongly dependent on the protonation of the pyridines ; con- sequently, they act as fluorescence ratiometric probes for simultaneous detection of both ds-DNA and BSA at pH 5, relying on the ratio between intensities at 420 nm (BSA specific) and 520 nm (DNA specific), whereby exclusively ds-DNA sensing could be switched-off by adjustment to pH 7. Only methylated, permanently charged pyrenes show photoinduced cleavage of circular DNA, at- tributed to pyrene- mediated irradiation-induced production of singlet oxygen. Consequently, the moderate toxicity of these cations against human cell lines is strongly increased upon irradiation. Detailed studies revealed increased total ROS production in cells treated by the compounds studied, accompanied by cell swelling and augmentation of cellular complexity. The most photo-active 2- para-N- methylpyridinium pyrene showed significant localization at mitochondria, its photo-bioac- tivity likely due to mitochondrial DNA damage. Other derivatives were mostly non-selectively dis- tributed between various cytoplasmic organelles, thus being less photoactive.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija

POVEZANOST RADA

Projekti:
HRZZ-IP-2018-01-5475 - Višekromoforne probe za prepoznavanje pojedinih struktura DNA, RNA i proteina (BioMultiChromoProbes) (Piantanida, Ivo, HRZZ - 2018-01) ( CroRIS)
HRZZ-IP-2019-04-6048 - Endocitoza adenovirusa i urođeni imunosni odgovor (AdenoIN) (Majhen, Dragomira, HRZZ - 2019-04) ( CroRIS)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Ivo Piantanida (autor)