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Proceedings 2017, 1(4), 503; doi:10.3390/proceedings1040503

Detection of Aβ(1-40) Protein in Human Serum as a Causative Agent of Alzheimer’s Disease by Strain Gauge Cantilever Biosensor Immobilizing Liposome Incorporating Cholesterol

1
Kyoto Institute of Technology, Kyoto, Japan
2
Niigata University, Niigata, Japan
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
*
Author to whom correspondence should be addressed.
Published: 7 September 2017
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Abstract

We have successfully measured amyloid beta (Aβ) (1-40) protein added in human serum by a NiCr strain gauge cantilever biosensor immobilized with liposomes incorporating cholesterol. Importantly, we investigated the effect of incorporation of cholesterol in the liposome in order to suppress the interaction between the liposome and many different proteins included in human serum. It was revealed that incorporating cholesterol suppresses the interaction between the proteins other than Aβ in human serum and the liposome. Finally, we detected Aβ(1-40) in human serum with typical chronological behaviors due to Aβ aggregation and fibrillization. Furthermore, as a digital low-pass filtering procedure could reduce external noises, the cantilever sensor immobilized with liposome incorporating cholesterol can detect low-concentrated Aβ in human serum.
Keywords: cantilever; NiCr strain gauge; biosensor; liposome; amyloid beta; aggregation; fibrillization; interaction; human serum; digital low-pass filtering procedure cantilever; NiCr strain gauge; biosensor; liposome; amyloid beta; aggregation; fibrillization; interaction; human serum; digital low-pass filtering procedure
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Taniguchi, T.; Murakami, Y.; Sohgawa, M.; Yamashita, K.; Noda, M. Detection of Aβ(1-40) Protein in Human Serum as a Causative Agent of Alzheimer’s Disease by Strain Gauge Cantilever Biosensor Immobilizing Liposome Incorporating Cholesterol. Proceedings 2017, 1, 503.

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