利用光纤拉曼探针优化偏移激发拉曼差分光谱法(SERDS),以应用于高荧光生物样品。

IF 3.6 3区 化学 Q2 CHEMISTRY, ANALYTICAL
Analyst Pub Date : 2024-11-19 DOI:10.1039/D4AN01264J
H. Sheridan, A. P. Dudgeon, J. C. C. Day, C. Kendall, C. Hall and N. Stone
{"title":"利用光纤拉曼探针优化偏移激发拉曼差分光谱法(SERDS),以应用于高荧光生物样品。","authors":"H. Sheridan, A. P. Dudgeon, J. C. C. Day, C. Kendall, C. Hall and N. Stone","doi":"10.1039/D4AN01264J","DOIUrl":null,"url":null,"abstract":"<p >Fibre optic probe based Raman spectroscopy can deliver <em>in vivo</em> molecular compositional analysis of a range of diseases. However, some biological tissues exhibit high levels of fluorescence which limit the utility of the technique, particularly when the fluorescence induces CCD etaloning, which can be particulalry hard to remove in subsequent analysis. Furthermore, use of fibre probes can result in silica signals superimposed on the biological Raman signals. Shifted excitation Raman difference spectroscopy (SERDS) utilises a small seperation in excitation wavelengths to remove signals from fluorescence, room lights, optical components and etaloning contributions, while retaining chemical signals from the sample. In this study, we sought to measure the optimum SERDS spectra enabling reconstruction of a range a narrow and broad peaks found in biological samples.  A original wavelength of 830 nm was utilised with 7 different shifts between 0.4 and 3.9 nm to determine which gave the best performance. This range roughly corresponds to the typical range of peak widths within biological Raman spectra at 830 nm excitation; 0.41 – 3.25 nm or 6 – 47 cm<small><sup>−1</sup></small>. An wavelength shift of 2.4 nm was identified as optimal. Finally, a fibre optic Raman probe was used to measure 2 human lymph nodes <em>ex vivo</em> to demonstrate the feasibility of the approach with real-world examples.</p>","PeriodicalId":63,"journal":{"name":"Analyst","volume":" 1","pages":" 103-119"},"PeriodicalIF":3.6000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/an/d4an01264j?page=search","citationCount":"0","resultStr":"{\"title\":\"Optimising Shifted Excitation Raman Difference Spectroscopy (SERDS) for application in highly fluorescent biological samples, using fibre optic probes†\",\"authors\":\"H. Sheridan, A. P. Dudgeon, J. C. C. Day, C. Kendall, C. Hall and N. Stone\",\"doi\":\"10.1039/D4AN01264J\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Fibre optic probe based Raman spectroscopy can deliver <em>in vivo</em> molecular compositional analysis of a range of diseases. However, some biological tissues exhibit high levels of fluorescence which limit the utility of the technique, particularly when the fluorescence induces CCD etaloning, which can be particulalry hard to remove in subsequent analysis. Furthermore, use of fibre probes can result in silica signals superimposed on the biological Raman signals. Shifted excitation Raman difference spectroscopy (SERDS) utilises a small seperation in excitation wavelengths to remove signals from fluorescence, room lights, optical components and etaloning contributions, while retaining chemical signals from the sample. In this study, we sought to measure the optimum SERDS spectra enabling reconstruction of a range a narrow and broad peaks found in biological samples.  A original wavelength of 830 nm was utilised with 7 different shifts between 0.4 and 3.9 nm to determine which gave the best performance. This range roughly corresponds to the typical range of peak widths within biological Raman spectra at 830 nm excitation; 0.41 – 3.25 nm or 6 – 47 cm<small><sup>−1</sup></small>. An wavelength shift of 2.4 nm was identified as optimal. Finally, a fibre optic Raman probe was used to measure 2 human lymph nodes <em>ex vivo</em> to demonstrate the feasibility of the approach with real-world examples.</p>\",\"PeriodicalId\":63,\"journal\":{\"name\":\"Analyst\",\"volume\":\" 1\",\"pages\":\" 103-119\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2024-11-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://pubs.rsc.org/en/content/articlepdf/2025/an/d4an01264j?page=search\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Analyst\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/an/d4an01264j\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analyst","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/an/d4an01264j","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0

摘要

基于光纤探针的拉曼光谱可以对一系列疾病进行活体分子成分分析。然而,一些生物组织会发出高水平的荧光,这限制了该技术的实用性,尤其是当荧光引起 CCD 蚀变时,在后续分析中很难去除蚀变。此外,使用纤维探针会导致二氧化硅信号叠加在生物拉曼信号上。偏移激发拉曼光谱(SERDS)利用激发波长的微小差异来去除荧光、室内灯光、光学元件和蚀变作用产生的信号,同时保留样品的化学信号。在这项研究中,我们试图测量最佳的 SERDS 光谱,以重建生物样本中的一系列窄峰和宽峰。原始波长为 830 nm,在 0.4 到 3.9 nm 之间有 7 种不同的偏移,以确定哪一种性能最佳。这个范围大致对应于 830 纳米激发下生物拉曼光谱的典型峰宽范围:0.41 - 3.25 纳米或 6 - 47 厘米-1。波长偏移 2.4 nm 被认为是最佳值。最后,使用光纤拉曼探针测量了 2 个人体淋巴结的活体情况,以实际例子证明该方法的可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Optimising Shifted Excitation Raman Difference Spectroscopy (SERDS) for application in highly fluorescent biological samples, using fibre optic probes†

Optimising Shifted Excitation Raman Difference Spectroscopy (SERDS) for application in highly fluorescent biological samples, using fibre optic probes†

Fibre optic probe based Raman spectroscopy can deliver in vivo molecular compositional analysis of a range of diseases. However, some biological tissues exhibit high levels of fluorescence which limit the utility of the technique, particularly when the fluorescence induces CCD etaloning, which can be particulalry hard to remove in subsequent analysis. Furthermore, use of fibre probes can result in silica signals superimposed on the biological Raman signals. Shifted excitation Raman difference spectroscopy (SERDS) utilises a small seperation in excitation wavelengths to remove signals from fluorescence, room lights, optical components and etaloning contributions, while retaining chemical signals from the sample. In this study, we sought to measure the optimum SERDS spectra enabling reconstruction of a range a narrow and broad peaks found in biological samples.  A original wavelength of 830 nm was utilised with 7 different shifts between 0.4 and 3.9 nm to determine which gave the best performance. This range roughly corresponds to the typical range of peak widths within biological Raman spectra at 830 nm excitation; 0.41 – 3.25 nm or 6 – 47 cm−1. An wavelength shift of 2.4 nm was identified as optimal. Finally, a fibre optic Raman probe was used to measure 2 human lymph nodes ex vivo to demonstrate the feasibility of the approach with real-world examples.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Analyst
Analyst 化学-分析化学
CiteScore
7.80
自引率
4.80%
发文量
636
审稿时长
1.9 months
期刊介绍: "Analyst" journal is the home of premier fundamental discoveries, inventions and applications in the analytical and bioanalytical sciences.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信