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Title:Molekulska dinamika vezave cianidina na SIRT6: pomembnost za človeško zdravje : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Dimnik, Gašper (Author)
ID Bren, Urban (Mentor) More about this mentor... New window
ID Lešnik, Samo (Comentor)
Files:.pdf UN_Dimnik_Gasper_2025.pdf (3,80 MB)
MD5: 2ED6B5B0EC46FA0A597C441D8CE16A28
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Z namenom, ne le podaljšati življensko dobo, temveč tudi ohraniti daljše obdobje zdravja človeka, je vedno več raziskav usmerjenih v razvoj naravnih modulatorjev encimske aktivnosti človeškega sirtuina 6 (SIRT6). Ta namreč sodeluje pri več celičnih procesih, povezanih s staranjem, ki bi jih lahko regulirali s pomočjo naravnih modulatorjev, flavonoidov. Med slednje spadata cianidin ter njegov glukozid cianidin-3-O-glukozid (Cy3G). S pomočjo računalniških orodij smo simulirali molekulske dinamike (MD) vezave teh ligandov na kompleks SIRT6 in adenozin difosfat(ADP)-riboze. Z analizo vrednosti RMSD ter časovnega deleža vodikovih vezi simulacije MD smo preučili stabilnost obeh ligandov v kompleksih ter določili stabilnejšega izmed obeh. Izkazalo se je, da se oba liganda stabilizirata v proteinskih kompleksih po 50 ns simulacije MD, a je ta stabilizacija pri cianidinu močnejša. Analiza vrednosti RMSD za izključno liganda je prav tako pokazala, da je cianidin stabilnejši izmed obeh. Dokončno potrditev tega smo dokazali z analizo vodikovih vezi med ligandoma ter SIRT6. Ugotovili smo, da se pri Cy3G karakteristične vodikove vezi vzpostavijo po 20 ns simulacije MD oziroma po zvišanju vrednosti RMSD. To poveča razliko med eksperimentalno določeno prvotno strukturo ter končno strukturo proteinskega kompleksa SIRT6–Cy3G. To dokazuje, da je cianidin boljša izbira za razvoj selektivnih in učinkovitih modulatorjev SIRT6, a je zaradi razlik v farmakokinetiki smotrno preučiti oba liganda. Te ugotovitve bi lahko vodile v raziskovanje in razvoj terapevtskih učinkovin za zdravljenje bolezni staranja, kot je na primer rak.
Keywords:bolezni staranja, SIRT6, molekulska dinamika, naravni modulatorji encimov, cianidin, cianidin-3-O-glukozid
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[G. Dimnik]
Year of publishing:2025
Number of pages:1 spletni vir (1 datoteka PDF (X, 32 f.))
PID:20.500.12556/DKUM-94603 New window
UDC:577.151(043.2)
COBISS.SI-ID:250796291 New window
Publication date in DKUM:18.09.2025
Views:173
Downloads:57
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:22.08.2025

Secondary language

Language:English
Title:Molecular dynamics of cyanidin binding to SIRT6: importance for human health
Abstract:With the aim of not only extending life expectancy, but also maintaining human health for longer periods of time, an increasing amount of research is focused on the development of natural modulators of the enzymatic activity of human sirtuin 6 (SIRT6). This enzyme is involved in several cellular processes related to aging, which could be regulated with the help of natural modulators, flavonoids. These also include cyanidin and its glucoside, cyanidin-3-O-glucoside (Cy3G). Using computational methods, we simulated the molecular dynamics (MD) of the binding of these ligands to the SIRT6 and adenosine diphosphate ribose (ADP-ribose) complex. By analyzing the RMSD values and the time portion of hydrogen bonds in the MD simulation, we studied the stability of both ligands in the complexes and determined which of the two was more stable. It turned out that both ligands stabilize in protein complexes after 50 ns of MD simulation, but this stabilization is stronger with cyanidin. An analysis of the RMSD values for the ligand alone also showed that cyanidin is the more stable of the two. We confirmed this conclusively by analyzing the hydrogen bonds between the ligands and SIRT6. We found that hydrogen bonds are formed in Cy3G only after 20 ns of MD simulation, or after an increase in the RMSD value. This increases the difference between the experimentally determined initial structure and the final structure of the SIRT6–Cy3G protein complex. This proves that cyanidin is a better choice for the development of selective and effective SIRT6 modulators, but both should be considered due to different pharmacokinetics. These findings could lead to the research and development of therapeutic agents for the treatment of age-related diseases, such as cancer.
Keywords:age-related diseases, SIRT6, molecular dynamics, natural enzyme modulators, cyanidin, cyanidin-3-O-glucoside


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