Investigation of the conformational change dynamics of β-amyloid peptide by Raman spectroscopy

24 Oct 2022, 18:00
2h
Scientist's house

Scientist's house

Joliot-Curie st., 6 (left wing)

Speakers

Artyom Shutikov (Department of Raman Spectroscopy, FLNP, JINR)Ms Ekaterina Demina (Department of Raman Spectroscopy, FLNP, JINR)

Description

The aggregation of the β-amyloid peptide (Aβ) is known to contribute to the accumulation of amyloid plaques in brain, which leads to the formation of a variety of diseases such as Alzheimer's. This work focuses on the conformational changes of Aβ (1-42) in the lipid membrane. The study was carried out by Raman spectroscopy, which is non-invasive, fast and does not require any sophisticated preparation of the material under study. In this work, we present a comparative analysis of the Aβ (1-42) peptide conformational change dynamics over time, including in the phospholipid membrane system. The aim of our study was to elucidate the regularity of structural changes in the amide I region (1600-1700 $cm^{-1}$) in the spectra of peptides which contributes to the formation of amyloid plaques.

Primary authors

Artyom Shutikov (Department of Raman Spectroscopy, FLNP, JINR) Ms Ekaterina Demina (Department of Raman Spectroscopy, FLNP, JINR) Darya Zakrytnaya (Department of Raman Spectroscopy, FLNP, JINR) Mr Yersultan Arynbek (JINR, INP, KazNU) Mr Kakhramon Mamatkulov (Department of Raman Spectroscopy, FLNP, JINR) Mr Grigory Arzumanyan (Department of Raman Spectroscopy, FLNP, JINR)

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