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Luh HT, Chung YW, Cho PY, Hsiao YC. Label-Free Cholesteric Liquid Crystal Biosensing Chips for Heme Oxygenase-1 Detection within Cerebrospinal Fluid as an Effective Outcome Indicator for Spontaneous Subarachnoid Hemorrhage. BIOSENSORS 2022; 12:204. [PMID: 35448264 PMCID: PMC9025456 DOI: 10.3390/bios12040204] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 03/24/2022] [Accepted: 03/26/2022] [Indexed: 06/14/2023]
Abstract
A novel device for cholesteric liquid crystal (LC; CLC)-based biosensing chips for detecting heme oxygenase (HO)-1 within the cerebrospinal fluid (CSF) was invented. In the CLC device, the reorientation of the LCs was strongly influenced by the alignment layer surface and adjacent LCs. When the substrate was coated with the alignment layer, the CLCs oriented homeotropically in a focal conic state. Once HO-1 was immobilized onto the orientation sheet-coated substrate, the CLC changed from a focal conic state to a bright planar state by disrupting the CLCs. The concentration of HO-1 within CSF was shown to be an effective outcome indicator for patients with a spontaneous subarachnoid hemorrhage. We showed that the CLC immunoassaying can be used to measure HO-1 with a lower detection limit of about 10 ng/mL. The linear range was 10 ng/mL to 1 mg/mL. An easy-to-use, rapid-detection, and label-free CLC immunoassay device is proposed.
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Affiliation(s)
- Hui-Tzung Luh
- Department of Neurosurgery, Taipei Medical University-Shuang Ho Hospital, New Taipei 23561, Taiwan;
- Taipei Neuroscience Institute, Taipei Medical University, New Taipei 23561, Taiwan
- Department of Neurosurgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Graduate Institute of Clinical Medicine, National Taiwan University, Taipei 10617, Taiwan;
- Stanford Byers Center for Biodesign, Stanford, CA 94305, USA
| | - Yi-Wei Chung
- Graduate Institute of Clinical Medicine, National Taiwan University, Taipei 10617, Taiwan;
- Division of Cardiology, Department of Internal Medicine, Taipei Medical University-Shuang Ho Hospital, New Taipei 23561, Taiwan
- Taipei Heart Institute, Taipei Medical University, Taipei 11031, Taiwan
- Cardiovascular Research Center, Taipei Medical University Hospital, Taipei 11031, Taiwan
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Po-Yi Cho
- Graduate Institute of Biomedical Optomechatronics, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan;
| | - Yu-Cheng Hsiao
- Graduate Institute of Biomedical Optomechatronics, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan;
- Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan
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