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Ming L, Zabala-Gutierrez I, Rodríguez-Sevilla P, Retama JR, Jaque D, Marin R, Ximendes E. Neural Networks Push the Limits of Luminescence Lifetime Nanosensing. Adv Mater 2023; 35:e2306606. [PMID: 37787978 DOI: 10.1002/adma.202306606] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/18/2023] [Indexed: 10/04/2023]
Abstract
Luminescence lifetime-based sensing is ideally suited to monitor biological systems due to its minimal invasiveness and remote working principle. Yet, its applicability is limited in conditions of low signal-to-noise ratio (SNR) induced by, e.g., short exposure times and presence of opaque tissues. Herein this limitation is overcome by applying a U-shaped convolutional neural network (U-NET) to improve luminescence lifetime estimation under conditions of extremely low SNR. Specifically, the prowess of the U-NET is showcased in the context of luminescence lifetime thermometry, achieving more precise thermal readouts using Ag2 S nanothermometers. Compared to traditional analysis methods of decay curve fitting and integration, the U-NET can extract average lifetimes more precisely and consistently regardless of the SNR value. The improvement achieved in the sensing performance using the U-NET is demonstrated with two experiments characterized by extreme measurement conditions: thermal monitoring of free-falling droplets, and monitoring of thermal transients in suspended droplets through an opaque medium. These results broaden the applicability of luminescence lifetime-based sensing in fields including in vivo experimentation and microfluidics, while, hopefully, spurring further research on the implementation of machine learning (ML) in luminescence sensing.
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Affiliation(s)
- Liyan Ming
- Nanomaterials for Bioimaging Group (nanoBIG), Departamento de Física de Materiales, Facultad de Ciencias, Autonomous University of Madrid, Madrid, 28049, Spain
- Departamento de Química en Ciencias Farmacéuticas, Complutense University of Madrid, Madrid, 28040, Spain
| | - Irene Zabala-Gutierrez
- Nanomaterials for Bioimaging Group (nanoBIG), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Hospital Ramón y Cajal, Madrid, 28034, Spain
| | - Paloma Rodríguez-Sevilla
- Nanomaterials for Bioimaging Group (nanoBIG), Departamento de Física de Materiales, Facultad de Ciencias, Autonomous University of Madrid, Madrid, 28049, Spain
| | - Jorge Rubio Retama
- Nanomaterials for Bioimaging Group (nanoBIG), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Hospital Ramón y Cajal, Madrid, 28034, Spain
| | - Daniel Jaque
- Nanomaterials for Bioimaging Group (nanoBIG), Departamento de Física de Materiales, Facultad de Ciencias, Autonomous University of Madrid, Madrid, 28049, Spain
- Departamento de Química en Ciencias Farmacéuticas, Complutense University of Madrid, Madrid, 28040, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Autonomous University of Madrid, Madrid, 28049, Spain
| | - Riccardo Marin
- Nanomaterials for Bioimaging Group (nanoBIG), Departamento de Física de Materiales, Facultad de Ciencias, Autonomous University of Madrid, Madrid, 28049, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Autonomous University of Madrid, Madrid, 28049, Spain
| | - Erving Ximendes
- Nanomaterials for Bioimaging Group (nanoBIG), Departamento de Física de Materiales, Facultad de Ciencias, Autonomous University of Madrid, Madrid, 28049, Spain
- Departamento de Química en Ciencias Farmacéuticas, Complutense University of Madrid, Madrid, 28040, Spain
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Shen Y, Lifante J, Zabala-Gutierrez I, de la Fuente-Fernández M, Granado M, Fernández N, Rubio-Retama J, Jaque D, Marin R, Ximendes E, Benayas A. Reliable and Remote Monitoring of Absolute Temperature during Liver Inflammation via Luminescence-Lifetime-Based Nanothermometry. Adv Mater 2022; 34:e2107764. [PMID: 34826883 DOI: 10.1002/adma.202107764] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/25/2021] [Indexed: 05/03/2023]
Abstract
Temperature of tissues and organs is one of the first parameters affected by physiological and pathological processes, such as metabolic activity, acute trauma, or infection-induced inflammation. Therefore, the onset and development of these processes can be detected by monitoring deviations from basal temperature. To accomplish this, minimally invasive, reliable, and accurate measurement of the absolute temperature of internal organs is required. Luminescence nanothermometry is the ideal technology for meeting these requirements. Although this technique has lately undergone remarkable developments, its reliability is being questioned due to spectral distortions caused by biological tissues. In this work, how the use of bright Ag2 S nanoparticles featuring temperature-dependent fluorescence lifetime enables reliable and accurate measurement of the absolute temperature of the liver in mice subjected to lipopolysaccharide-induced inflammation is demonstrated. Beyond the remarkable thermal sensitivity (≈ 3% °C-1 around 37 °C) and thermal resolution obtained (smaller than 0.3 °C), the results included in this work set a blueprint for the development of new diagnostic procedures based on the use of intracorporeal temperature as a physiological indicator.
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Affiliation(s)
- Yingli Shen
- Nanomaterials for Bioimaging Group (NanoBIG), Universidad Autónoma de Madrid, Madrid, 28049, Spain
| | - José Lifante
- Nanomaterials for Bioimaging Group (NanoBIG), Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Nanomaterials for Bioimaging Group (NanoBIG), Instituto Ramón y Cajal de Investigación Sanitaria, Ctra de Colmenar Viejo Km 9,100, Madrid, 28034, Spain
| | - Irene Zabala-Gutierrez
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal S/N, Madrid, 28040, Spain
| | | | - Miriam Granado
- Nanomaterials for Bioimaging Group (NanoBIG), Universidad Autónoma de Madrid, Madrid, 28049, Spain
| | - Nuria Fernández
- Nanomaterials for Bioimaging Group (NanoBIG), Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Nanomaterials for Bioimaging Group (NanoBIG), Instituto Ramón y Cajal de Investigación Sanitaria, Ctra de Colmenar Viejo Km 9,100, Madrid, 28034, Spain
| | - Jorge Rubio-Retama
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal S/N, Madrid, 28040, Spain
| | - Daniel Jaque
- Nanomaterials for Bioimaging Group (NanoBIG), Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Nanomaterials for Bioimaging Group (NanoBIG), Instituto Ramón y Cajal de Investigación Sanitaria, Ctra de Colmenar Viejo Km 9,100, Madrid, 28034, Spain
| | - Riccardo Marin
- Nanomaterials for Bioimaging Group (NanoBIG), Universidad Autónoma de Madrid, Madrid, 28049, Spain
| | - Erving Ximendes
- Nanomaterials for Bioimaging Group (NanoBIG), Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Nanomaterials for Bioimaging Group (NanoBIG), Instituto Ramón y Cajal de Investigación Sanitaria, Ctra de Colmenar Viejo Km 9,100, Madrid, 28034, Spain
| | - Antonio Benayas
- Nanomaterials for Bioimaging Group (NanoBIG), Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Nanomaterials for Bioimaging Group (NanoBIG), Instituto Ramón y Cajal de Investigación Sanitaria, Ctra de Colmenar Viejo Km 9,100, Madrid, 28034, Spain
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