Surface polymer imprinted optical fibre sensor for dose detection of dabrafenib

He, Chenyang; Ledezma, Ulises Hernandez; Gurnani, Pratik; Albelha, Thais; Thurecht, Kristofer J.; Correia, Ricardo; Morgan, Stephen P.; Patel, Poulam; Alexander, Cameron; Korposh, Sergiy

Abstract

© 2020 The Royal Society of Chemistry. Dabrafenib is one of the most widely used of the new generation of targeted anti-cancer drugs. However, its therapeutic window varies for different patients and so there is an unmet need for methods to monitor the dose of drug which the patient receives and at the specific site where it acts. In the case of cancers, it is critical to measure the concentration of drug not just in the bloodstream overall, but in or near tumours, as these will not be the same over multiple time periods. A novel sensor based on an optical fibre long period grating (LPG) modified with a molecular imprinted polymer (MIP) has been developed with the ultimate aim of achieving minimally invasive measurements of Dabrafenib at the tumour site. A molecularly imprinted polymer specific for Dabrafenib was coated on a methacryloylalkoxysilane-functionalised optical fibre long period grating. In vitro experimental results demonstrate that the Dabrafenib sensitivity is 15.2 pm (μg mL-1)-1 (R2 = 0.993) with a limit of detection (LoD) of 74.4 μg mL-1 in serum solution. Moreover, the proposed sensor shows selective response to Dabrafenib over structurally similar 2-Aminoquinoline.

Citation

He, C., Ledezma, U. H., Gurnani, P., Albelha, T., Thurecht, K. J., Correia, R., …Korposh, S. (2020). Surface polymer imprinted optical fibre sensor for dose detection of dabrafenib. Analyst, 145(13), 4504-4511. https://doi.org/10.1039/d0an00434k

• Journal Article Type: Article
• Acceptance Date: May 6, 2020
• Online Publication Date: May 7, 2020
• Publication Date: Jul 7, 2020
• Deposit Date: Sep 4, 2020
• Publicly Available Date: May 8, 2021
• Journal: Analyst
• Print ISSN: 0003-2654
• Electronic ISSN: 1364-5528
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 145
• Issue: 13
• Pages: 4504-4511
• DOI: https://doi.org/10.1039/d0an00434k
• Keywords: Analytical Chemistry; Spectroscopy; Electrochemistry; Biochemistry; Environmental Chemistry
• Public URL: https://nottingham-repository.worktribe.com/output/4442482
• Publisher URL: https://pubs.rsc.org/en/content/articlelanding/2020/AN/D0AN00434K#!divAbstract
• Additional Information: : This document is Similarity Check deposited; : Chenyang He (ORCID); : Thais Albelha (ORCID); : Kristofer J. Thurecht (ORCID); : Kristofer J. Thurecht (ResearcherID); : Sergiy Korposh (ORCID); : Single-blind; : Received 3 March 2020; Accepted 6 May 2020; Accepted Manuscript published 7 May 2020; Advance Article published 15 May 2020