[PDF][PDF] Application study of infrared free-electron lasers towards the development of amyloidosis therapy

M Jindo, K Nakamura, H Okumura… - Journal of …, 2022 - journals.iucr.org
Amyloidosis is known to be caused by the deposition of amyloid fibrils into various biological
tissues; effective treatments for the disease are little established today. An infrared free …

Role of water molecules and helix structure stabilization in the laser-induced disruption of amyloid fibrils observed by nonequilibrium molecular dynamics simulations

H Okumura, SG Itoh, K Nakamura… - The Journal of Physical …, 2021 - ACS Publications
Water plays a crucial role in the formation and destruction of biomolecular structures. The
mechanism for destroying biomolecular structures was thought to be an active breaking of …

Application of mid-infrared free-electron laser tuned to amide bands for dissociation of aggregate structure of protein

T Kawasaki, T Yaji, T Ohta… - Journal of synchrotron …, 2016 - journals.iucr.org
A mid-infrared free-electron laser (FEL) is a linearly polarized, high-peak powered pulse
laser with tunable wavelength within the mid-infrared absorption region. It was recently …

Mid-infrared free-electron laser tuned to the amide I band for converting insoluble amyloid-like protein fibrils into the soluble monomeric form

T Kawasaki, J Fujioka, T Imai, K Torigoe… - Lasers in medical …, 2014 - Springer
A mid-infrared free-electron laser (FEL) is operated as a pulsed and linearly polarized laser
with tunable wavelengths within infrared region. Although the FEL can ablate soft tissues …

[HTML][HTML] Synchrotron-infrared microscopy analysis of amyloid fibrils irradiated by mid-infrared free-electron laser

T Kawasaki, T Yaji, T Imai, T Ohta… - American Journal of …, 2014 - scirp.org
Amyloid fibrils are widely recognized as a cause of serious amyloidosis such as Alzheimer's
disease. Although dissociation of amyloid fibril aggregates is expected to lead to a decrease …

Disassembly of Amyloid Fibril with Infrared Free Electron Laser

T Kawasaki, K Tsukiyama, PH Nguyen - International journal of molecular …, 2023 - mdpi.com
Amyloid fibril causes serious amyloidosis such as neurodegenerative diseases. The
structure is composed of rigid β-sheet stacking conformation which makes it hard to …

[HTML][HTML] Use of a mid-infrared free-electron laser (MIR-FEL) for dissociation of the amyloid fibril aggregates of a peptide

T Kawasaki, T Imai, K Tsukiyama - Journal of Analytical Sciences …, 2014 - scirp.org
Amyloid fibrils are deposited in various tissues in the body, and are linked to the putative
causes of serious diseases such as amyloidosis. Although the conditions of the disease …

[HTML][HTML] Picosecond dissociation of amyloid fibrils with infrared laser: A nonequilibrium simulation study

M Hoang Viet, P Derreumaux, MS Li… - The Journal of …, 2015 - pubs.aip.org
Recently, mid-infrared free-electron laser technology has been developed to dissociate
amyloid fibrils. Here, we present a theoretical framework for this type of experiment based on …

Infrared laser-induced amyloid fibril dissociation: a joint experimental/theoretical study on the GNNQQNY peptide

T Kawasaki, VH Man, Y Sugimoto… - The journal of …, 2020 - ACS Publications
Neurodegenerative diseases are usually characterized by plaques made of well-ordered
aggregates of distinct amyloid proteins. Dissociating these very stable amyloid plaques is a …

Dissolution of a fibrous peptide by terahertz free electron laser

T Kawasaki, K Tsukiyama, A Irizawa - Scientific reports, 2019 - nature.com
Fibrous peptides such as amyloid fibrils have various roles in biological system, eg, as
causal factor of serious amyloidosis in human and as functional regulator of cell formation in …