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A de novo zwitterionic strategy of ultra-stable chemiluminescent probes: highly selective sensing of singlet oxygen in FDA-approved phototherapy.

ABSTRACT: Singlet oxygen (¹O₂), as a fundamental hallmark in photodynamic therapy (PDT), enables ground-breaking clinical treatment in ablating tumors and killing germs. However, accurate in vivo monitoring of ¹O₂ remains a significant challenge in probe design, with primary difficulties arising from inherent photo-induced side reactions with poor selectivity. Herein, we report a generalizable zwitterionic strategy for ultra-stable near-infrared (NIR) chemiluminescent probes that ensure a highly specific [2 + 2] cycloaddition between fragile electron-rich enolether units and ¹O₂ in both cellular and dynamic in vivo domains. Innovatively, zwitterionic chemiluminescence (CL) probes undergo a conversion into an inert ketone excited state with an extremely short lifetime through conical intersection (CI), thereby affording sufficient photostability and suppressing undesired photoreactions. Remarkably, compared with the well-known commercial ¹O₂ probe SOSG, the zwitterionic probe QMI exhibited an ultra-high signal-to-noise ratio (SNR, over 40-fold). Of particular significance is that the zwitterionic CL probes demonstrate excellent selectivity, high sensitivity, and outstanding photostability, thereby making a breakthrough in real-time tracking of the FDA-approved 5-ALA-mediated in vivo PDT process in living mice. This innovative zwitterionic strategy paves a new pathway for high-performance NIR chemiluminescent probes and high-fidelity feedback on ¹O₂ for future biological and medical applications.

SUBMITTER: Lu Y

PROVIDER: S-EPMC11304548 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature

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A de novo zwitterionic strategy of ultra-stable chemiluminescent probes: highly selective sensing of singlet oxygen in FDA-approved phototherapy.

Lu Yao Y Zhang Yutao Y Wu Xia X Pu Ruihua R Yan Chenxu C Liu Weimin W Liu Xiaogang X Guo Zhiqian Z Zhu Wei-Hong WH

Chemical science 20240624 31

Singlet oxygen (1O2), as a fundamental hallmark in photodynamic therapy (PDT), enables ground-breaking clinical treatment in ablating tumors and killing germs. However, accurate in vivo monitoring of 1O2 remains a significant challenge in probe design, with primary difficulties arising from inherent photo-induced side reactions with poor selectivity. Herein, we report a generalizable zwitterionic strategy for ultra-stable near-infrared (NIR) che ...[more]

PMID: 39118631

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Project description:BackgroundMedication guides are required documents to be distributed to patients in order to convey serious risks associated with certain prescribed medicines. Little is known about the effectiveness of this information to adequately inform patients on safe use.ObjectiveTo examine the readability, suitability, and comprehensibility of medication guides, particularly for those with limited literacy.DesignAssessments of suitability and readability of 185 medication guides, and a sub-study examining change in suitability and readability from 2006 to 2010 among 32 of the medication guides (Study 1); 'open book' comprehension assessment of medication guides (Study 2).SettingTwo general internal medicine clinics in Chicago, IL.PatientsFour hundred and forty-nine adults seeking primary care services, ages 18-85.MeasurementsFor Study 1, the Suitability Assessment of Materials (SAM) and Lexile score for readability. For Study 2, a tailored comprehension assessment of content found in three representative medication guides.ResultsThe 185 analyzed medication guides were on average 1923 words (SD = 1022), with a mean reading level of 10-11th grade. Only one medication guide was deemed suitable in SAM analyses. None provided summaries or reviews, or framed the context first, while very few were rated as having made the purpose evident (8 %), or limited the scope of content (22 %). For Study 2, participants' comprehension of medication guides was poor (M = 52.7 % correct responses, SD = 22.6). In multivariable analysis, low and marginal literacy were independently associated with poorer understanding (β = -14.3, 95 % CI -18.0 - -10.6, p < 0.001; low: β = -23.7, 95 % CI -28.3 - -19.0, p < 0.001).ConclusionCurrent medication guides are of little value to patients, as they are too complex and difficult to understand especially for individuals with limited literacy. Explicit guidance is offered for improving these print materials.

Dataset Information

A de novo zwitterionic strategy of ultra-stable chemiluminescent probes: highly selective sensing of singlet oxygen in FDA-approved phototherapy.

Publications

A <i>de novo</i> zwitterionic strategy of ultra-stable chemiluminescent probes: highly selective sensing of singlet oxygen in FDA-approved phototherapy.

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