Ionic environment affects biomolecular interactions of Amyloid-β: SPR biosensor study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023752%3A_____%2F20%3A43920488" target="_blank" >RIV/00023752:_____/20:43920488 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/1422-0067/21/24/9727" target="_blank" >https://www.mdpi.com/1422-0067/21/24/9727</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ijms21249727" target="_blank" >10.3390/ijms21249727</a>
Alternative languages
Result language
angličtina
Original language name
Ionic environment affects biomolecular interactions of Amyloid-β: SPR biosensor study
Original language description
In early stages of Alzheimer’s disease (AD), amyloid beta (Aβ) accumulates in the mitochondrial matrix and interacts with mitochondrial proteins, such as cyclophilin D (cypD) and 17β-hydroxysteroid dehydrogenase 10 (17β-HSD10). Multiple processes associated with AD such as increased production or oligomerization of Aβ affect these interactions and disbalance the equilibrium between the biomolecules, which contributes to mitochondrial dysfunction. Here, we investigate the effect of the ionic environment on the interactions of Aβ (Aβ1–40, Aβ1–42) with cypD and 17β-HSD10 using a surface plasmon resonance (SPR) biosensor. We show that changes in concentrations of K+ and Mg2+ significantly affect the interactions and may increase the binding efficiency between the biomolecules by up to 35% and 65% for the interactions with Aβ1–40 and Aβ1–42, respectively, in comparison with the physiological state. We also demonstrate that while the binding of Aβ1–40 to cypD and 17β-HSD10 takes place preferentially around the physiological concentrations of ions, decreased concentrations of K+ and increased concentrations of Mg2+ promote the interaction of both mitochondrial proteins with Aβ1–42. These results suggest that the ionic environment represents an important factor that should be considered in the investigation of biomolecular interactions taking place in the mitochondrial matrix under physiological as well as AD-associated conditions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10608 - Biochemistry and molecular biology
Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Molecular Sciences
ISSN
1661-6596
e-ISSN
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Volume of the periodical
21
Issue of the periodical within the volume
24
Country of publishing house
CH - SWITZERLAND
Number of pages
11
Pages from-to
" Article number 9727"
UT code for WoS article
000602991100001
EID of the result in the Scopus database
2-s2.0-85098152669