Synchrotron FTIR micro-spectroscopy for structural analysis of Lewy bodies in the brain of Parkinson’s disease patients

• Araki, Katsuya

• Yagi, Naoto

• Ikemoto, Yuka

• Yagi, Hisashi

• Choong, Chi-Jing

• Hayakawa, Hideki

• Beck, Goichi

• Sumi, Hisae

• Fujimura, Harutoshi

• Moriwaki, Taro

• Nagai, Yoshitaka

• Goto, Yuji

• Mochizuki, Hideki

抄録

Katsuya Araki, Naoto Yagi, Yuka Ikemoto, Hisashi Yagi, Chi-Jing Choong, Hideki Hayakawa, Goichi Beck, Hisae Sumi, Harutoshi Fujimura, Taro Moriwaki, Yoshitaka Nagai, Yuji Goto & Hideki Mochizuki "Synchrotron FTIR micro-spectroscopy for structural analysis of Lewy bodies in the brain of Parkinson’s disease patients", Scientific Reports, volume 5, Article number: 17625, Springer Nature, 2015

Lewy bodies (LBs), which mainly consist of α-synuclein (α-syn), are neuropathological hallmarks of patients with Parkinson’s disease (PD). The fine structure of LBs is unknown, and LBs cannot be made artificially. Nevertheless, many studies have described fibrillisation using recombinant α-syn purified from E. coli. An extremely fundamental problem is whether the structure of LBs is the same as that of recombinant amyloid fibrils. Thus, we used synchrotron Fourier transform infrared micro-spectroscopy (FTIRM) to analyse the fine structure of LBs in the brain of PD patients. Our results showed a shift in the infrared spectrum that indicates abundance of a β-sheet-rich structure in LBs. Also, 2D infrared mapping of LBs revealed that the content of the β-sheet structure is higher in the halo than in the core, and the core contains a large amount of proteins and lipids.

収録刊行物

• Scientific Reports

  Scientific Reports 5 17625-, 2015-12

  Springer Nature

キーワード

• Multidisciplinary

詳細情報

• CRID: 1050862643879068672
• NII論文ID: 120006557628
• DOI: 10.1038/srep17625
• ISSN: 20452322
• HANDLE: 11094/71268
• Web Site: https://www.nature.com/articles/srep17625
• Web Site: https://www.nature.com/articles/srep17625.pdf
• 本文言語コード: en
• 資料種別: journal article
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