Label-Free Infrared Spectroscopic Imaging Reveals Heterogeneity of β-Sheet Aggregates in Alzheimer's Disease.
Label-Free Infrared Spectroscopic Imaging Reveals Heterogeneity of β-Sheet Aggregates in Alzheimer's Disease.
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无标记红外光谱成像揭示阿尔茨海默病中β-折叠聚集体的异质性 。
DOI:
10.1021/acs.jpclett.1c02306
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发表时间:
2021-10-07
期刊:
影响因子:
--
通讯作者:
Ghosh A
中科院分区:
文献类型:
--
作者:
Confer MP;Holcombe BM;Foes AG;Holmquist JM;Walker SC;Deb S;Ghosh A
Aggregation of the beta amyloid (Aβ) protein into plaques is a pathological feature of Alzheimer’s disease (AD). While amyloid aggregates have been extensively studied in vitro, their structural aspects and associated chemistry in the brain are not fully understood. In this report, we demonstrate using infrared spectroscopic imaging that Aβ plaques exhibit significant heterogeneities in terms of their secondary structure and phospholipid content. We show that the capabilities of discrete frequency infrared imaging (DFIR) are ideally suited for characterizing amyloid deposits in brain tissues and employ DFIR to identify non-plaque beta sheet aggregates distributed throughout brain tissues. We further demonstrate that phospholipid rich beta sheet deposits exist outside of plaques in all diseased tissues, indicating their potential clinical significance. This is the very first application of DFIR towards characterizing protein aggregates in AD brain and provides a rapid, label-free approach that allows us to uncover beta-sheet heterogeneities in the AD, which may be significant for targeted therapeutic strategies in future.
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影响因子:
3.7
作者:
Guzmán C;Bagga M;Kaur A;Westermarck J;Abankwa D
通讯作者:
Abankwa D
DOI:
10.3233/jad-179941
发表时间:
2018
期刊:
Journal of Alzheimer's disease : JAD
影响因子:
--
作者:
Cline EN;Bicca MA;Viola KL;Klein WL
通讯作者:
Klein WL
影响因子:
5.7
作者:
Ghosh, Ayanjeet;Mukherjee, Prabuddha;Bhargava, Rohit
通讯作者:
Bhargava, Rohit
影响因子:
3.5
作者:
Bhargava R
通讯作者:
Bhargava R
影响因子:
5.7
作者:
Hard, Torleid
通讯作者:
Hard, Torleid