4.4 Article

FRET-mediated quenching of BODIPY fluorescent nanoparticles by methylene blue and its application to bacterial imaging

期刊

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
卷 21, 期 7, 页码 1249-1255

出版社

SPRINGERNATURE
DOI: 10.1007/s43630-022-00215-1

关键词

Fluorescent nanoparticles; Methylene blue; Fluorescence quenching; Bioimaging; Bacteria

资金

  1. CNRS (Centre National de la Recherche Scientifique) of France-Interface Physique Chimie Biologie Soutien a la prise de risque
  2. Institut d'Alembert [FR 3242]
  3. MENESR (Ministere de l'Education Nationale, de l'Enseignement Superieur et de la Recherche) of France [01/10/2012 6466, 01/10/2009 320]

向作者/读者索取更多资源

A novel strategy is proposed to remove the emission of fluorescent nanoparticles during bacteria imaging by using methylene blue, offering a new approach to improve image accuracy in bioimaging.
High resolution and a good signal to noise ratio are a requirement in cell imaging. However, after labelling with fluorescent entities, and after several washing steps, there is often an unwanted fluorescent background that reduces the images resolution. For this purpose, we developed an approach to remove the signal from extra-cellular fluorescent nanoparticles (FNPs) during bacteria imaging, without the need for any washing steps. Our idea is to use methylene blue to quench > 90% of the emission of BODIPY-based fluorescent polymer nanoparticle by a FRET process. This Hide-and-Seek Game approach offers a novel strategy to apply fluorescence quenching in bioimaging to improve image accuracy. [GRAPHICS] .

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