Interactions between silver nanoparticles and fluorescent phytochromes from Deinococcus radiodurans

Poikkitieteelliset sovellukset ovat viime aikoina yleistyneet tieteellisessä tutkimuksessa. Tämä näkyy hyvin esimerkiksi elävän kudoksen kuvantamisen kehittymisessä, jota varten etsitään jatkuvasti parempia biologisia leimoja fysiikan ja kemian keinoin. Tässä tutkielmassa on kehitetty ensimmäinen lä...

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Päätekijä: Nuuttila, Lauri
Muut tekijät: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Fysiikan laitos, Department of Physics, University of Jyväskylä, Jyväskylän yliopisto
Aineistotyyppi: Pro gradu
Kieli:eng
Julkaistu: 2017
Aiheet:
Linkit: https://jyx.jyu.fi/handle/123456789/55371
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author Nuuttila, Lauri
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto
author_facet Nuuttila, Lauri Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto Nuuttila, Lauri Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto
author_sort Nuuttila, Lauri
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description Poikkitieteelliset sovellukset ovat viime aikoina yleistyneet tieteellisessä tutkimuksessa. Tämä näkyy hyvin esimerkiksi elävän kudoksen kuvantamisen kehittymisessä, jota varten etsitään jatkuvasti parempia biologisia leimoja fysiikan ja kemian keinoin. Tässä tutkielmassa on kehitetty ensimmäinen lähi-infrapuna-alueen fluoresenssileima, joka hyödyntää hopeananopartikkeleja ja fytokromeja. Kompleksi on syntetisoitu itse ja sen rakenne on todennettu optisen spektroskopian, elektroforeesin ja elektronimikroskopian keinoin. Lupaavat fluoresenssiominaisuudet saatiin käyttämällä monomeerisen Deinococcus radiodurans -fytokromin kromoforia sitovaa domeenia (CBDmon). Hopeapartikkelien läsnäollessa CBDmonin kvanttisaanto kasvoi 20 % ja viritetyn tilan elinaika laski 30 %. Syntetisoidun kompleksin kirkkaus verrattuna CBDmonin kirkkauteen oli 470+-40% 390 nm:n ja 134+-11% 630 nm:n virityksellä. Näitä tuloksia voidaan todennäköisesti vielä kasvattaa, koska kompleksin rakennetta on mahdollista muokata monella eri tavalla. Siksi voidaan todeta, että kehitetty menetelmä on lupaava keino lähi-infrapunaalueen leimojen suunnitteluun. Applications using a cross-disciplinary approach are a common phenomenon in recent scientific research. A good example is the field of living tissue imaging where better biological labels are constantly searched with the help of physics and chemistry. In this Thesis, a near-infrared template combining silver nanoparticles and phytochromes was synthesized. The formation of the complex was confirmed by using optical spectroscopy, electrophoresis and electron microscopy. Promising fluorescent properties were obtained using monomeric chromophore binding domain (CBDmon) of a phytochrome from Deinococcus radiodurans. In the presence of silver nanoparticles, CBDmon showed 20% increased quantum yield and 30% decreased exited state lifetime. The brightness of the synthesized complex was 470+-40% at 390 nm excitation wavelength and 134+-11% at 630 nm relative to the brightness of pure CBDmon. It is likely that these promising properties could be improved by further engineering using variety of methods. Thus, the results indicate a new way to design applicable NIR-labels.
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spellingShingle Nuuttila, Lauri Interactions between silver nanoparticles and fluorescent phytochromes from Deinococcus radiodurans plasmonit kirkkaus CBDmon absorptio fluoroforit kvanttisaanto säteily elinaika plasmon brightness imaging absorption fluorophore quantum yield radiation lifetime Fysiikka Physics 4021 kuvantaminen fluoresenssimikroskopia kemialliset yhdisteet fluoresenssi
title Interactions between silver nanoparticles and fluorescent phytochromes from Deinococcus radiodurans
title_full Interactions between silver nanoparticles and fluorescent phytochromes from Deinococcus radiodurans
title_fullStr Interactions between silver nanoparticles and fluorescent phytochromes from Deinococcus radiodurans Interactions between silver nanoparticles and fluorescent phytochromes from Deinococcus radiodurans
title_full_unstemmed Interactions between silver nanoparticles and fluorescent phytochromes from Deinococcus radiodurans Interactions between silver nanoparticles and fluorescent phytochromes from Deinococcus radiodurans
title_short Interactions between silver nanoparticles and fluorescent phytochromes from Deinococcus radiodurans
title_sort interactions between silver nanoparticles and fluorescent phytochromes from deinococcus radiodurans
title_txtP Interactions between silver nanoparticles and fluorescent phytochromes from Deinococcus radiodurans
topic plasmonit kirkkaus CBDmon absorptio fluoroforit kvanttisaanto säteily elinaika plasmon brightness imaging absorption fluorophore quantum yield radiation lifetime Fysiikka Physics 4021 kuvantaminen fluoresenssimikroskopia kemialliset yhdisteet fluoresenssi
topic_facet 4021 CBDmon Fysiikka Physics absorptio absorption brightness elinaika fluoresenssi fluoresenssimikroskopia fluoroforit fluorophore imaging kemialliset yhdisteet kirkkaus kuvantaminen kvanttisaanto lifetime plasmon plasmonit quantum yield radiation säteily
url https://jyx.jyu.fi/handle/123456789/55371 http://www.urn.fi/URN:NBN:fi:jyu-201709153737
work_keys_str_mv AT nuuttilalauri interactionsbetweensilvernanoparticlesandfluorescentphytochromesfromdeinococcusrad