1
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Desai N, Liao W, Lauga E. Natural convection in the cytoplasm: Theoretical predictions of buoyancy-driven flows inside a cell. PLoS One 2024; 19:e0307765. [PMID: 39052656 PMCID: PMC11271965 DOI: 10.1371/journal.pone.0307765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 07/08/2024] [Indexed: 07/27/2024] Open
Abstract
The existence of temperature gradients within eukaryotic cells has been postulated as a source of natural convection in the cytoplasm, i.e. bulk fluid motion as a result of temperature-difference-induced density gradients. Recent computations have predicted that a temperature differential of ΔT ≈ 1 K between the cell nucleus and the cell membrane could be strong enough to drive significant intracellular material transport. We use numerical computations and theoretical calculations to revisit this problem in order to further understand the impact of temperature gradients on flow generation and advective transport within cells. Surprisingly, our computations yield flows that are an order of magnitude weaker than those obtained previously for the same relative size and position of the nucleus with respect to the cell membrane. To understand this discrepancy, we develop a semi-analytical solution of the convective flow inside a model cell using a bi-spherical coordinate framework, for the case of an axisymmetric cell geometry (i.e. when the displacement of the nucleus from the cell centre is aligned with gravity). We also calculate exact solutions for the flow when the nucleus is located concentrically inside the cell. The results from both theoretical analyses agree with our numerical results, thus providing a robust estimate of the strength of cytoplasmic natural convection and demonstrating that these are much weaker than previously predicted. Finally, we investigate the ability of the aforementioned flows to redistribute solute within a cell. Our calculations reveal that, in all but unrealistic cases, cytoplasmic convection has a negligible contribution toward enhancing the diffusion-dominated mass transfer of cellular material.
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Affiliation(s)
- Nikhil Desai
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom
| | - Weida Liao
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom
| | - Eric Lauga
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom
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2
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Terzioglu M, Veeroja K, Montonen T, Ihalainen TO, Salminen TS, Bénit P, Rustin P, Chang YT, Nagai T, Jacobs HT. Mitochondrial temperature homeostasis resists external metabolic stresses. eLife 2023; 12:RP89232. [PMID: 38079477 PMCID: PMC10712956 DOI: 10.7554/elife.89232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023] Open
Abstract
Based on studies with a fluorescent reporter dye, Mito Thermo Yellow (MTY), and the genetically encoded gTEMP ratiometric fluorescent temperature indicator targeted to mitochondria, the temperature of active mitochondria in four mammalian and one insect cell line was estimated to be up to 15°C above that of the external environment to which the cells were exposed. High mitochondrial temperature was maintained in the face of a variety of metabolic stresses, including substrate starvation or modification, decreased ATP demand due to inhibition of cytosolic protein synthesis, inhibition of the mitochondrial adenine nucleotide transporter and, if an auxiliary pathway for electron transfer was available via the alternative oxidase, even respiratory poisons acting downstream of oxidative phosphorylation (OXPHOS) complex I. We propose that the high temperature of active mitochondria is an inescapable consequence of the biochemistry of OXPHOS and is homeostatically maintained as a primary feature of mitochondrial metabolism.
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Affiliation(s)
- Mügen Terzioglu
- Faculty of Medicine and Health Technology, Tampere UniversityTampereFinland
| | - Kristo Veeroja
- Faculty of Medicine and Health Technology, Tampere UniversityTampereFinland
| | - Toni Montonen
- Faculty of Medicine and Health Technology, Tampere UniversityTampereFinland
| | - Teemu O Ihalainen
- Faculty of Medicine and Health Technology, Tampere UniversityTampereFinland
| | - Tiina S Salminen
- Faculty of Medicine and Health Technology, Tampere UniversityTampereFinland
| | - Paule Bénit
- Université Paris Cité, Inserm, Maladies Neurodéveloppementales et NeurovasculairesParisFrance
| | - Pierre Rustin
- Université Paris Cité, Inserm, Maladies Neurodéveloppementales et NeurovasculairesParisFrance
| | - Young-Tae Chang
- SANKEN (The Institute of Scientific and Industrial Research), Osaka UniversityIbarakiJapan
| | | | - Howard T Jacobs
- Faculty of Medicine and Health Technology, Tampere UniversityTampereFinland
- Department of Environment and Genetics, La Trobe UniversityMelbourneAustralia
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3
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Kruglov AG, Romshin AM, Nikiforova AB, Plotnikova A, Vlasov II. Warm Cells, Hot Mitochondria: Achievements and Problems of Ultralocal Thermometry. Int J Mol Sci 2023; 24:16955. [PMID: 38069275 PMCID: PMC10707128 DOI: 10.3390/ijms242316955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023] Open
Abstract
Temperature is a crucial regulator of the rate and direction of biochemical reactions and cell processes. The recent data indicating the presence of local thermal gradients associated with the sites of high-rate thermogenesis, on the one hand, demonstrate the possibility for the existence of "thermal signaling" in a cell and, on the other, are criticized on the basis of thermodynamic calculations and models. Here, we review the main thermometric techniques and sensors developed for the determination of temperature inside living cells and diverse intracellular compartments. A comparative analysis is conducted of the results obtained using these methods for the cytosol, nucleus, endo-/sarcoplasmic reticulum, and mitochondria, as well as their biological consistency. Special attention is given to the limitations, possible sources of errors and ambiguities of the sensor's responses. The issue of biological temperature limits in cells and organelles is considered. It is concluded that the elaboration of experimental protocols for ultralocal temperature measurements that take into account both the characteristics of biological systems, as well as the properties and limitations of each type of sensor is of critical importance for the generation of reliable results and further progress in this field.
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Affiliation(s)
- Alexey G. Kruglov
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Alexey M. Romshin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia;
| | - Anna B. Nikiforova
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Arina Plotnikova
- Institute for Physics and Engineering in Biomedicine, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute MEPhI), 115409 Moscow, Russia;
| | - Igor I. Vlasov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia;
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4
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Romshin AM, Zeeb V, Glushkov E, Radenovic A, Sinogeikin AG, Vlasov II. Nanoscale thermal control of a single living cell enabled by diamond heater-thermometer. Sci Rep 2023; 13:8546. [PMID: 37236978 DOI: 10.1038/s41598-023-35141-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 05/13/2023] [Indexed: 05/28/2023] Open
Abstract
We report a new approach to controllable thermal stimulation of a single living cell and its compartments. The technique is based on the use of a single polycrystalline diamond particle containing silicon-vacancy (SiV) color centers. Due to the presence of amorphous carbon at its intercrystalline boundaries, such a particle is an efficient light absorber and becomes a local heat source when illuminated by a laser. Furthermore, the temperature of such a local heater is tracked by the spectral shift of the zero-phonon line of SiV centers. Thus, the diamond particle acts simultaneously as a heater and a thermometer. In the current work, we demonstrate the ability of such a Diamond Heater-Thermometer (DHT) to locally alter the temperature, one of the numerous parameters that play a decisive role for the living organisms at the nanoscale. In particular, we show that the local heating of 11-12 °C relative to the ambient temperature (22 °C) next to individual HeLa cells and neurons, isolated from the mouse hippocampus, leads to a change in the intracellular distribution of the concentration of free calcium ions. For individual HeLa cells, a long-term (about 30 s) increase in the integral intensity of Fluo-4 NW fluorescence by about three times is observed, which characterizes an increase in the [Ca2+]cyt concentration of free calcium in the cytoplasm. Heating near mouse hippocampal neurons also caused a calcium surge-an increase in the intensity of Fluo-4 NW fluorescence by 30% and a duration of ~ 0.4 ms.
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Affiliation(s)
- Alexey M Romshin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, Moscow, 119991, Russia.
| | - Vadim Zeeb
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Pushchino, Moscow Region, 142292, Russia.
| | - Evgenii Glushkov
- Laboratory of Nanoscale Biology, Institute of Bioengineering, Ecole Polytechnique Federale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Aleksandra Radenovic
- Laboratory of Nanoscale Biology, Institute of Bioengineering, Ecole Polytechnique Federale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Andrey G Sinogeikin
- NanThermix SA, Ecole Polytechnique Federale de Lausanne (EPFL) Innovation Park, 1015, Lausanne, Switzerland
| | - Igor I Vlasov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, Moscow, 119991, Russia
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5
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Inomata N, Miyamoto T, Okabe K, Ono T. Measurement of cellular thermal properties and their temperature dependence based on frequency spectra via an on-chip-integrated microthermistor. LAB ON A CHIP 2023; 23:2411-2420. [PMID: 36880592 DOI: 10.1039/d2lc01185a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
To understand the mechanism of intracellular thermal transport, thermal properties must be elucidated, particularly thermal conductivity and specific heat capacity. However, these properties have not been extensively studied. In this study, we developed a cellular temperature measurement device with a high temperature resolution of 1.17 m °C under wet conditions and with the ability to introduce intracellular local heating using a focused infrared laser to cultured cells on the device surface. Using this device, we evaluated the thermal properties of single cells based on their temperature signals and responses. Measurements were taken using on-chip-integrated microthermistors with high temperature resolution at varying surrounding temperatures and frequencies of local infrared irradiation on cells prepared on the sensors. Frequency spectra were used to determine the intensities of the temperature signals with respect to heating times. Signal intensities at 37 °C and a frequency lower than 2 Hz were larger than those at 25 °C, which were similar to those of water. The apparent thermal conductivity and specific heat capacity, which were determined at different surrounding temperatures and local heating frequencies, were lower than and similar to those of water at 37 °C and 25 °C, respectively. Our results indicate that the thermal properties of cells depend on both temperatures and physiological activities in addition to local heating frequencies.
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Affiliation(s)
- Naoki Inomata
- Graduate School of Engineering, Tohoku University, 6-6-01 aza-Aoba Aoba, Sendai 980-8579, Japan.
| | - Takumi Miyamoto
- Graduate School of Engineering, Tohoku University, 6-6-01 aza-Aoba Aoba, Sendai 980-8579, Japan.
| | - Kohki Okabe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-0033, Japan
| | - Takahito Ono
- Graduate School of Engineering, Tohoku University, 6-6-01 aza-Aoba Aoba, Sendai 980-8579, Japan.
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6
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Kurisaki I, Tanaka S, Mori I, Umegaki T, Mori Y, Tanaka S. Thermal conductivity and conductance of protein in aqueous solution: Effects of geometrical shape. J Comput Chem 2023; 44:857-868. [PMID: 36468822 PMCID: PMC10107505 DOI: 10.1002/jcc.27048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 11/10/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022]
Abstract
Considering the importance of elucidating the heat transfer in living cells, we evaluated the thermal conductivity κ and conductance G of hydrated protein through all-atom non-equilibrium molecular dynamics simulation. Extending the computational scheme developed in earlier studies for spherical protein to cylindrical one under the periodic boundary condition, we enabled the theoretical analysis of anisotropic thermal conduction and also discussed the effects of protein size correction on the calculated results. While the present results for myoglobin and green fluorescent protein (GFP) by the spherical model were in fair agreement with previous computational and experimental results, we found that the evaluations for κ and G by the cylindrical model, in particular, those for the longitudinal direction of GFP, were enhanced substantially, but still keeping a consistency with experimental data. We also studied the influence by salt addition of physiological concentration, finding insignificant alteration of thermal conduction of protein in the present case.
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Affiliation(s)
- Ikuo Kurisaki
- Graduate School of System Informatics, Kobe University, Kobe, Japan
| | - Seiya Tanaka
- Graduate School of Science, Technology and Innovation, Kobe University, Kobe, Japan
| | - Ichiro Mori
- Graduate School of Science, Technology and Innovation, Kobe University, Kobe, Japan
| | - Toshihito Umegaki
- Graduate School of System Informatics, Kobe University, Kobe, Japan.,Center for Mathematical Modeling and Data Science, Osaka University, Osaka, Japan
| | - Yoshiharu Mori
- Graduate School of System Informatics, Kobe University, Kobe, Japan
| | - Shigenori Tanaka
- Graduate School of System Informatics, Kobe University, Kobe, Japan
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7
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The development of ultrasensitive microcalorimeters for bioanalysis and energy balance monitoring. FUNDAMENTAL RESEARCH 2023. [DOI: 10.1016/j.fmre.2023.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
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8
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Liu GQ, Liu RB, Li Q. Nanothermometry with Enhanced Sensitivity and Enlarged Working Range Using Diamond Sensors. Acc Chem Res 2023; 56:95-105. [PMID: 36594628 DOI: 10.1021/acs.accounts.2c00576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Nanothermometry is increasingly demanded in frontier research in physics, chemistry, materials science and engineering, and biomedicine. An ideal thermometer should have features of reliable temperature interpretation, high sensitivity, fast response, minimum disturbance of the target's temperature, applicability in a variety of environments, and a large working temperature range. For applications in nanosystems, high spatial resolution is also desirable. Such requirements impose great challenges in nanothermometry since the shrinking of the sensor volume usually leads to a reduction in sensitivity.Diamond with nitrogen-vacancy (NV) centers provides opportunities for nanothermometry. NV center spins have sharp resonances due to their superb coherence. NV centers are multimodal sensors. They can directly sense magnetic fields, electric fields, temperature, pressure, and nuclear spins and, through proper transduction, measure other quantities such as the pH and deformation. In particular, their spin resonance frequencies vary with temperature, making them a promising thermometer. The high thermal conductivity, high hardness, chemical stability, and biocompatibility of diamond enable reliable and fast temperature sensing in complex environments ranging from erosive liquids to live systems. Chemical processing of diamond surfaces allows various functionalities such as targeting. The small size and the targeting capability of nanodiamonds then enable site-specific temperature sensing with nanoscale spatial resolution. However, the sensitivity of NV-based nanothermometry is yet to meet the requirement of practical systems with a large gap of a few orders of magnitude. On the other hand, although NV-based quantum sensing works well from 0.3 to 600 K, extending the sensing scheme to high temperature remains challenging due to uncertainty in identifying the exact physical limits and possible solution at elevated temperatures.This Account focuses on our efforts to enhance the temperature sensitivity and widen the working temperature range of diamond-based nanothermometry. We start with explaining the working principle and features of NV-based thermometry with examples of applications. Then a transducer-based concept is introduced with practical schemes to improve the sensitivity of the nanodiamond thermometer. Specifically, we show that the temperature signal can be transduced and amplified by adopting hybrid structures of nanodiamond and magnetic nanoparticles, which results in a record temperature sensitivity of 76 μK/√Hz. We also demonstrate quantum sensing with NV at high temperatures of up to 1000 K by adopting a pulsed heating-cooling scheme to carry out the spin polarization and readout at room temperature and the spin manipulation (sensing) at high temperatures. Finally, unsolved problems and future endeavors of diamond nanothermometry are discussed.
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Affiliation(s)
- Gang-Qin Liu
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
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9
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Liu X, Yamazaki T, Kwon HY, Arai S, Chang YT. A palette of site-specific organelle fluorescent thermometers. Mater Today Bio 2022; 16:100405. [PMID: 36060107 PMCID: PMC9434161 DOI: 10.1016/j.mtbio.2022.100405] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 11/04/2022] Open
Abstract
Intracellular micro-temperature is closely related to cellular processes. Such local temperature inside cells can be measured by fluorescent thermometers, which are a series of fluorescent materials that convert the temperature information to detectable fluorescence signals. To investigate the intracellular temperature fluctuation in various organelles, it is essential to develop site-specific organelle thermometers. In this study, we develop a new series of fluorescent thermometers, Thermo Greens (TGs), to visualize the temperature change in almost all typical organelles. Through fluorescence lifetime-based cell imaging, it was proven that TGs allow the organelle-specific monitoring of temperature gradients created by external heating. The fluorescence lifetime-based thermometry shows that each organelle experiences a distinct temperature increment which depends on the distance away from the heat source. TGs are further demonstrated in the quantitative imaging of heat production at different organelles such as mitochondria and endoplasmic reticulum in brown adipocytes. To date, TGs are the first palette batch of small molecular fluorescent thermometers that can cover almost all typical organelles. These findings can inspire the development of new fluorescent thermometers and enhance the understanding of thermal biology in the future.
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Affiliation(s)
- Xiao Liu
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), Pohang, Gyeongbuk, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, South Korea
| | - Takeru Yamazaki
- WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Haw-Young Kwon
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), Pohang, Gyeongbuk, 37673, South Korea
| | - Satoshi Arai
- WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Young-Tae Chang
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), Pohang, Gyeongbuk, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, South Korea
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10
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Petrini G, Tomagra G, Bernardi E, Moreva E, Traina P, Marcantoni A, Picollo F, Kvaková K, Cígler P, Degiovanni IP, Carabelli V, Genovese M. Nanodiamond-Quantum Sensors Reveal Temperature Variation Associated to Hippocampal Neurons Firing. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2202014. [PMID: 35876403 PMCID: PMC9534962 DOI: 10.1002/advs.202202014] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/28/2022] [Indexed: 05/17/2023]
Abstract
Temperature is one of the most relevant parameters for the regulation of intracellular processes. Measuring localized subcellular temperature gradients is fundamental for a deeper understanding of cell function, such as the genesis of action potentials, and cell metabolism. Notwithstanding several proposed techniques, at the moment detection of temperature fluctuations at the subcellular level still represents an ongoing challenge. Here, for the first time, temperature variations (1 °C) associated with potentiation and inhibition of neuronal firing is detected, by exploiting a nanoscale thermometer based on optically detected magnetic resonance in nanodiamonds. The results demonstrate that nitrogen-vacancy centers in nanodiamonds provide a tool for assessing various levels of neuronal spiking activity, since they are suitable for monitoring different temperature variations, respectively, associated with the spontaneous firing of hippocampal neurons, the disinhibition of GABAergic transmission and the silencing of the network. Conjugated with the high sensitivity of this technique (in perspective sensitive to < 0.1 °C variations), nanodiamonds pave the way to a systematic study of the generation of localized temperature gradients under physiological and pathological conditions. Furthermore, they prompt further studies explaining in detail the physiological mechanism originating this effect.
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Affiliation(s)
- Giulia Petrini
- Istituto Nazionale di Ricerca MetrologicaStrada delle cacce 91Torino10135Italy
- Physics Department, University of Torinovia P. Giuria 1Torino10125Italy
- Department of Drug and Science Technology, University of TorinoCorso Raffaello 30Torino10125Italy
| | - Giulia Tomagra
- Department of Drug and Science Technology, University of TorinoCorso Raffaello 30Torino10125Italy
- NIS Inter‐departmental Centrevia G. Quarello 15Torino10135Italy
| | - Ettore Bernardi
- Istituto Nazionale di Ricerca MetrologicaStrada delle cacce 91Torino10135Italy
| | - Ekaterina Moreva
- Istituto Nazionale di Ricerca MetrologicaStrada delle cacce 91Torino10135Italy
| | - Paolo Traina
- Istituto Nazionale di Ricerca MetrologicaStrada delle cacce 91Torino10135Italy
| | - Andrea Marcantoni
- Department of Drug and Science Technology, University of TorinoCorso Raffaello 30Torino10125Italy
- NIS Inter‐departmental Centrevia G. Quarello 15Torino10135Italy
| | - Federico Picollo
- Physics Department, University of Torinovia P. Giuria 1Torino10125Italy
- Istituto Nazionale di Fisica Nucleare (INFN) Sez. Torinovia P. Giuria 1Torino10125Italy
| | - Klaudia Kvaková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of SciencesFlemingovo nam. 2Prague 6166 10Czechia
- Institute of Medical Biochemistry and Laboratory DiagnosticsFirst Faculty of MedicineCharles University
Katerinska 1660/32Prague 2121 08Czechia
| | - Petr Cígler
- Institute of Medical Biochemistry and Laboratory DiagnosticsFirst Faculty of MedicineCharles University
Katerinska 1660/32Prague 2121 08Czechia
| | - Ivo Pietro Degiovanni
- Istituto Nazionale di Ricerca MetrologicaStrada delle cacce 91Torino10135Italy
- Istituto Nazionale di Fisica Nucleare (INFN) Sez. Torinovia P. Giuria 1Torino10125Italy
| | - Valentina Carabelli
- Department of Drug and Science Technology, University of TorinoCorso Raffaello 30Torino10125Italy
- NIS Inter‐departmental Centrevia G. Quarello 15Torino10135Italy
| | - Marco Genovese
- Istituto Nazionale di Ricerca MetrologicaStrada delle cacce 91Torino10135Italy
- Istituto Nazionale di Fisica Nucleare (INFN) Sez. Torinovia P. Giuria 1Torino10125Italy
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11
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Molinaro C, Bénéfice M, Gorlas A, Da Cunha V, Robert HML, Catchpole R, Gallais L, Forterre P, Baffou G. Life at high temperature observed in vitro upon laser heating of gold nanoparticles. Nat Commun 2022; 13:5342. [PMID: 36097020 PMCID: PMC9468142 DOI: 10.1038/s41467-022-33074-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 08/31/2022] [Indexed: 11/22/2022] Open
Abstract
Thermophiles are microorganisms that thrive at high temperature. Studying them can provide valuable information on how life has adapted to extreme conditions. However, high temperature conditions are difficult to achieve on conventional optical microscopes. Some home-made solutions have been proposed, all based on local resistive electric heating, but no simple commercial solution exists. In this article, we introduce the concept of microscale laser heating over the field of view of a microscope to achieve high temperature for the study of thermophiles, while maintaining the user environment in soft conditions. Microscale heating with moderate laser intensities is achieved using a substrate covered with gold nanoparticles, as biocompatible, efficient light absorbers. The influences of possible microscale fluid convection, cell confinement and centrifugal thermophoretic motion are discussed. The method is demonstrated with two species: (i) Geobacillus stearothermophilus, a motile thermophilic bacterium thriving around 65 °C, which we observed to germinate, grow and swim upon microscale heating and (ii) Sulfolobus shibatae, a hyperthermophilic archaeon living at the optimal temperature of 80 °C. This work opens the path toward simple and safe observation of thermophilic microorganisms using current and accessible microscopy tools. Studying microorganisms at high temperatures is challenging on conventional optical microscopes. Here, the authors introduce the concept of microscale laser heating over the full field of view by using gold nanoparticles as light absorbers, and study thermophile species up to 80 °C.
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12
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Lu K, Wazawa T, Sakamoto J, Vu CQ, Nakano M, Kamei Y, Nagai T. Intracellular Heat Transfer and Thermal Property Revealed by Kilohertz Temperature Imaging with a Genetically Encoded Nanothermometer. NANO LETTERS 2022; 22:5698-5707. [PMID: 35792763 PMCID: PMC9335883 DOI: 10.1021/acs.nanolett.2c00608] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Despite improved sensitivity of nanothermometers, direct observation of heat transport inside single cells has remained challenging for the lack of high-speed temperature imaging techniques. Here, we identified insufficient temperature resolution under short signal integration time and slow sensor kinetics as two major bottlenecks. To overcome the limitations, we developed B-gTEMP, a nanothermometer based on the tandem fusion of mNeonGreen and tdTomato fluorescent proteins. We visualized the propagation of heat inside intracellular space by tracking the temporal variation of local temperature at a time resolution of 155 μs and a temperature resolution 0.042 °C. By comparing the fast in situ temperature dynamics with computer-simulated heat diffusion, we estimated the thermal diffusivity of live HeLa cells. The present thermal diffusivity in cells was about 1/5.3 of that of water and much smaller than the values reported for bulk tissues, which may account for observations of heterogeneous intracellular temperature distributions.
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Affiliation(s)
- Kai Lu
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Tetsuichi Wazawa
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Joe Sakamoto
- National
Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Cong Quang Vu
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Graduate
School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Masahiro Nakano
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Yasuhiro Kamei
- National
Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Takeharu Nagai
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Graduate
School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan
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13
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El-Gammal Z, Nasr MA, Elmehrath AO, Salah RA, Saad SM, El-Badri N. Regulation of mitochondrial temperature in health and disease. Pflugers Arch 2022; 474:1043-1051. [PMID: 35780250 PMCID: PMC9492600 DOI: 10.1007/s00424-022-02719-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 06/15/2022] [Indexed: 11/30/2022]
Abstract
Mitochondrial temperature is produced by various metabolic processes inside the mitochondria, particularly oxidative phosphorylation. It was recently reported that mitochondria could normally operate at high temperatures that can reach 50℃. The aim of this review is to identify mitochondrial temperature differences between normal cells and cancer cells. Herein, we discussed the different types of mitochondrial thermosensors and their advantages and disadvantages. We reviewed the studies assessing the mitochondrial temperature in cancer cells and normal cells. We shed the light on the factors involved in maintaining the mitochondrial temperature of normal cells compared to cancer cells.
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Affiliation(s)
- Zaynab El-Gammal
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, Cairo, Egypt.,Egypt Center for Research and Regenerative Medicine, Cairo, Egypt
| | - Mohamed A Nasr
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, Cairo, Egypt
| | - Ahmed O Elmehrath
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, Cairo, Egypt.,Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Radwa A Salah
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, Cairo, Egypt
| | - Shams M Saad
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, Cairo, Egypt
| | - Nagwa El-Badri
- Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, Cairo, Egypt.
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14
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Quintanilla M, Henriksen-Lacey M, Renero-Lecuna C, Liz-Marzán LM. Challenges for optical nanothermometry in biological environments. Chem Soc Rev 2022; 51:4223-4242. [PMID: 35587578 DOI: 10.1039/d2cs00069e] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Temperature monitoring is useful in medical diagnosis, and essential during hyperthermia treatments to avoid undesired cytotoxic effects. Aiming to control heating doses, different temperature monitoring strategies have been developed, largely based on luminescent materials, a.k.a. nanothermometers. However, for such nanothermometers to work, both excitation and emission light beams must travel through tissue, making its optical properties a relevant aspect to be considered during the measurements. In complex tissues, heterogeneity, and real-time alterations as a result of therapeutic treatment may have an effect on light-tissue interaction, hindering accuracy in the thermal reading. In this Tutorial Review we discuss various methods in which nanothermometers can be used for temperature sensing within heterogeneous environments. We discuss recent developments in optical (nano)thermometry, focusing on the incorporation of luminescent nanoparticles into complex in vitro and in vivo models. Methods formulated to avoid thermal misreading are also discussed, considering their respective advantages and drawbacks.
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Affiliation(s)
- Marta Quintanilla
- Materials Physics Department, Universidad Autónoma de Madrid (UAM), Avda. Francisco Tomás y Valiente, 7. 28049, Madrid, Spain.
| | - Malou Henriksen-Lacey
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo de Miramón 194, 20014 Donostia-San Sebastián, Spain. .,Centro de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Paseo de Miramón 194, 20014 Donostia-San Sebastián, Spain
| | - Carlos Renero-Lecuna
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo de Miramón 194, 20014 Donostia-San Sebastián, Spain. .,Centro de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Paseo de Miramón 194, 20014 Donostia-San Sebastián, Spain
| | - Luis M Liz-Marzán
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo de Miramón 194, 20014 Donostia-San Sebastián, Spain. .,Centro de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Paseo de Miramón 194, 20014 Donostia-San Sebastián, Spain.,Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
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15
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Losa J, Leupold S, Alonso‐Martinez D, Vainikka P, Thallmair S, Tych KM, Marrink SJ, Heinemann M. Perspective: a stirring role for metabolism in cells. Mol Syst Biol 2022; 18:e10822. [PMID: 35362256 PMCID: PMC8972047 DOI: 10.15252/msb.202110822] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 03/05/2022] [Accepted: 03/09/2022] [Indexed: 11/24/2022] Open
Abstract
Based on recent findings indicating that metabolism might be governed by a limit on the rate at which cells can dissipate Gibbs energy, in this Perspective, we propose a new mechanism of how metabolic activity could globally regulate biomolecular processes in a cell. Specifically, we postulate that Gibbs energy released in metabolic reactions is used to perform work, allowing enzymes to self-propel or to break free from supramolecular structures. This catalysis-induced enzyme movement will result in increased intracellular motion, which in turn can compromise biomolecular functions. Once the increased intracellular motion has a detrimental effect on regulatory mechanisms, this will establish a feedback mechanism on metabolic activity, and result in the observed thermodynamic limit. While this proposed explanation for the identified upper rate limit on cellular Gibbs energy dissipation rate awaits experimental validation, it offers an intriguing perspective of how metabolic activity can globally affect biomolecular functions and will hopefully spark new research.
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Affiliation(s)
- José Losa
- Molecular Systems BiologyGroningen Biomolecular Sciences and Biotechnology InstituteUniversity of GroningenGroningenThe Netherlands
| | - Simeon Leupold
- Molecular Systems BiologyGroningen Biomolecular Sciences and Biotechnology InstituteUniversity of GroningenGroningenThe Netherlands
| | - Diego Alonso‐Martinez
- Molecular Systems BiologyGroningen Biomolecular Sciences and Biotechnology InstituteUniversity of GroningenGroningenThe Netherlands
| | - Petteri Vainikka
- Molecular DynamicsGroningen Biomolecular Sciences and Biotechnology InstituteUniversity of GroningenGroningenThe Netherlands
| | - Sebastian Thallmair
- Molecular DynamicsGroningen Biomolecular Sciences and Biotechnology InstituteUniversity of GroningenGroningenThe Netherlands
- Present address:
Frankfurt Institute for Advanced StudiesFrankfurt am MainGermany
| | - Katarzyna M Tych
- Chemical BiologyGroningen Biomolecular Sciences and Biotechnology InstituteUniversity of GroningenGroningenThe Netherlands
| | - Siewert J Marrink
- Molecular DynamicsGroningen Biomolecular Sciences and Biotechnology InstituteUniversity of GroningenGroningenThe Netherlands
| | - Matthias Heinemann
- Molecular Systems BiologyGroningen Biomolecular Sciences and Biotechnology InstituteUniversity of GroningenGroningenThe Netherlands
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16
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Feng G, Zhang H, Zhu X, Zhang J, Fang J. Fluorescence Thermometer: Intermediation of the Fontal Temperature and Light. Biomater Sci 2022; 10:1855-1882. [DOI: 10.1039/d1bm01912k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rapid advance of thermal materials and fluorescence spectroscopy has extensively promoted micro-scale fluorescence thermometry development in recent years. Based on the advantages of fast response, high sensitivity, simple operation,...
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17
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Opto-thermal technologies for microscopic analysis of cellular temperature-sensing systems. Biophys Rev 2021; 14:41-54. [PMID: 35340595 PMCID: PMC8921355 DOI: 10.1007/s12551-021-00854-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 10/12/2021] [Indexed: 12/15/2022] Open
Abstract
AbstractCould enzymatic activities and their cooperative functions act as cellular temperature-sensing systems? This review introduces recent opto-thermal technologies for microscopic analyses of various types of cellular temperature-sensing system. Optical microheating technologies have been developed for local and rapid temperature manipulations at the cellular level. Advanced luminescent thermometers visualize the dynamics of cellular local temperature in space and time during microheating. An optical heater and thermometer can be combined into one smart nanomaterial that demonstrates hybrid function. These technologies have revealed a variety of cellular responses to spatial and temporal changes in temperature. Spatial temperature gradients cause asymmetric deformations during mitosis and neurite outgrowth. Rapid changes in temperature causes imbalance of intracellular Ca2+ homeostasis and membrane potential. Among those responses, heat-induced muscle contractions are highlighted. It is also demonstrated that the short-term heating hyperactivates molecular motors to exceed their maximal activities at optimal temperatures. We discuss future prospects for opto-thermal manipulation of cellular functions and contributions to obtain a deeper understanding of the mechanisms of cellular temperature-sensing systems.
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18
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Wang Y, Zhu H, Feng J, Neuzil P. Recent advances of microcalorimetry for studying cellular metabolic heat. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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19
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Fujiwara M, Shikano Y. Diamond quantum thermometry: from foundations to applications. NANOTECHNOLOGY 2021; 32:482002. [PMID: 34416739 DOI: 10.1088/1361-6528/ac1fb1] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
Diamond quantum thermometry exploits the optical and electrical spin properties of colour defect centres in diamonds and, acts as a quantum sensing method exhibiting ultrahigh precision and robustness. Compared to the existing luminescent nanothermometry techniques, a diamond quantum thermometer can be operated over a wide temperature range and a sensor spatial scale ranging from nanometres to micrometres. Further, diamond quantum thermometry is employed in several applications, including electronics and biology, to explore these fields with nanoscale temperature measurements. This review covers the operational principles of diamond quantum thermometry for spin-based and all-optical methods, material development of diamonds with a focus on thermometry, and examples of applications in electrical and biological systems with demand-based technological requirements.
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Affiliation(s)
- Masazumi Fujiwara
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Yutaka Shikano
- Graduate School of Science and Technology, Gunma University, 4-2 Aramaki, Maebashi, Gunma 371-8510, Japan
- Quantum Computing Center, Keio University, 3-14-1 Hiyoshi, Kohoku, Yokohama 223-8522, Japan
- Institute for Quantum Studies, Chapman University, 1 University Dr, Orange, CA 92866, United States of America
- JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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20
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Vu CQ, Fukushima SI, Wazawa T, Nagai T. A highly-sensitive genetically encoded temperature indicator exploiting a temperature-responsive elastin-like polypeptide. Sci Rep 2021; 11:16519. [PMID: 34389773 PMCID: PMC8363741 DOI: 10.1038/s41598-021-96049-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 07/26/2021] [Indexed: 12/02/2022] Open
Abstract
Genetically encoded temperature indicators (GETIs) allow for real-time measurement of subcellular temperature dynamics in live cells. However, GETIs have suffered from poor temperature sensitivity, which may not be sufficient to resolve small heat production from a biological process. Here, we develop a highly-sensitive GETI, denoted as ELP-TEMP, comprised of a temperature-responsive elastin-like polypeptide (ELP) fused with a cyan fluorescent protein (FP), mTurquoise2 (mT), and a yellow FP, mVenus (mV), as the donor and acceptor, respectively, of Förster resonance energy transfer (FRET). At elevated temperatures, the ELP moiety in ELP-TEMP undergoes a phase transition leading to an increase in the FRET efficiency. In HeLa cells, ELP-TEMP responded to the temperature from 33 to 40 °C with a maximum temperature sensitivity of 45.1 ± 8.1%/°C, which was the highest ever temperature sensitivity among hitherto-developed fluorescent nanothermometers. Although ELP-TEMP showed sensitivity not only to temperature but also to macromolecular crowding and self-concentration, we were able to correct the output of ELP-TEMP to achieve accurate temperature measurements at a subcellular resolution. We successfully applied ELP-TEMP to accurately measure temperature changes in cells induced by a local heat spot, even if the temperature difference was as small as < 1 °C, and to visualize heat production from stimulated Ca2+ influx in live HeLa cells induced by a chemical stimulation. Furthermore, we investigated temperatures in the nucleus and cytoplasm of live HeLa cells and found that their temperatures were almost the same within the temperature resolution of our measurement. Our study would contribute to better understanding of cellular temperature dynamics, and ELP-TEMP would be a useful GETI for the investigation of cell thermobiology.
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Affiliation(s)
- Cong Quang Vu
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, 565-0871, Japan.,SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Ibaraki, Osaka, 567-0047, Japan
| | - Shun-Ichi Fukushima
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Ibaraki, Osaka, 567-0047, Japan
| | - Tetsuichi Wazawa
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Ibaraki, Osaka, 567-0047, Japan
| | - Takeharu Nagai
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, 565-0871, Japan. .,SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Ibaraki, Osaka, 567-0047, Japan.
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21
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Romshin AM, Zeeb V, Martyanov AK, Kudryavtsev OS, Pasternak DG, Sedov VS, Ralchenko VG, Sinogeykin AG, Vlasov II. A new approach to precise mapping of local temperature fields in submicrometer aqueous volumes. Sci Rep 2021; 11:14228. [PMID: 34244547 PMCID: PMC8270900 DOI: 10.1038/s41598-021-93374-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 06/16/2021] [Indexed: 11/09/2022] Open
Abstract
Nanodiamonds hosting temperature-sensing centers constitute a closed thermodynamic system. Such a system prevents direct contact of the temperature sensors with the environment making it an ideal environmental insensitive nanosized thermometer. A new design of a nanodiamond thermometer, based on a 500-nm luminescent nanodiamond embedded into the inner channel of a glass submicron pipette is reported. All-optical detection of temperature, based on spectral changes of the emission of "silicon-vacancy" centers with temperature, is used. We demonstrate the applicability of the thermometric tool to the study of temperature distribution near a local heater, placed in an aqueous medium. The calculated and experimental values of temperatures are shown to coincide within measurement error at gradients up to 20 °C/μm. Until now, temperature measurements on the submicron scale at such high gradients have not been performed. The new thermometric tool opens up unique opportunities to answer the urgent paradigm-shifting questions of cell physiology thermodynamics.
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Affiliation(s)
- Alexey M Romshin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, Moscow, Russia, 119991
| | - Vadim Zeeb
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Pushchino, Moscow Region, Russia, 142292.
| | - Artem K Martyanov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, Moscow, Russia, 119991
| | - Oleg S Kudryavtsev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, Moscow, Russia, 119991
| | - Dmitrii G Pasternak
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, Moscow, Russia, 119991
| | - Vadim S Sedov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, Moscow, Russia, 119991
| | - Victor G Ralchenko
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, Moscow, Russia, 119991
| | - Andrey G Sinogeykin
- Wonder Technologies LLC, Skolkovo Innovation Center, Bolshoy blvd. 42, Moscow, Russia
| | - Igor I Vlasov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, Moscow, Russia, 119991.
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22
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Zhang T, Pramanik G, Zhang K, Gulka M, Wang L, Jing J, Xu F, Li Z, Wei Q, Cigler P, Chu Z. Toward Quantitative Bio-sensing with Nitrogen-Vacancy Center in Diamond. ACS Sens 2021; 6:2077-2107. [PMID: 34038091 DOI: 10.1021/acssensors.1c00415] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The long-dreamed-of capability of monitoring the molecular machinery in living systems has not been realized yet, mainly due to the technical limitations of current sensing technologies. However, recently emerging quantum sensors are showing great promise for molecular detection and imaging. One of such sensing qubits is the nitrogen-vacancy (NV) center, a photoluminescent impurity in a diamond lattice with unique room-temperature optical and spin properties. This atomic-sized quantum emitter has the ability to quantitatively measure nanoscale electromagnetic fields via optical means at ambient conditions. Moreover, the unlimited photostability of NV centers, combined with the excellent diamond biocompatibility and the possibility of diamond nanoparticles internalization into the living cells, makes NV-based sensors one of the most promising and versatile platforms for various life-science applications. In this review, we will summarize the latest developments of NV-based quantum sensing with a focus on biomedical applications, including measurements of magnetic biomaterials, intracellular temperature, localized physiological species, action potentials, and electronic and nuclear spins. We will also outline the main unresolved challenges and provide future perspectives of many promising aspects of NV-based bio-sensing.
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Affiliation(s)
- Tongtong Zhang
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Goutam Pramanik
- UGC DAE Consortium for Scientific Research, Kolkata Centre, Sector III, LB-8, Bidhan Nagar, Kolkata 700106, India
| | - Kai Zhang
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Michal Gulka
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 166 10 Prague, Czech Republic
| | - Lingzhi Wang
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Jixiang Jing
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Feng Xu
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Zifu Li
- National Engineering Research Center for Nanomedicine, Key Laboratory of Molecular Biophysics of Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medical, College of Life Science and Technology, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Qiang Wei
- College of Polymer Science and Engineering, College of Biomedical Engineering, State Key Laboratory of Polymer Materials and Engineering, Sichuan University, 610065 Chengdu, China
| | - Petr Cigler
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 166 10 Prague, Czech Republic
| | - Zhiqin Chu
- Department of Electrical and Electronic Engineering, Joint Appointment with School of Biomedical Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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23
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Wu Y, Alam MNA, Balasubramanian P, Ermakova A, Fischer S, Barth H, Wagner M, Raabe M, Jelezko F, Weil T. Nanodiamond Theranostic for Light-Controlled Intracellular Heating and Nanoscale Temperature Sensing. NANO LETTERS 2021; 21:3780-3788. [PMID: 33881327 PMCID: PMC8289278 DOI: 10.1021/acs.nanolett.1c00043] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Temperature is an essential parameter in all biological systems, but information about the actual temperature in living cells is limited. Especially, in photothermal therapy, local intracellular temperature changes induce cell death but the local temperature gradients are not known. Highly sensitive nanothermometers would be required to measure and report local temperature changes independent of the intracellular environment, including pH or ions. Fluorescent nanodiamonds (ND) enable temperature sensing at the nanoscale independent of external conditions. Herein, we prepare ND nanothermometers coated with a nanogel shell and the photothermal agent indocyanine green serves as a heat generator and sensor. Upon irradiation, programmed cell death was induced in cancer cells with high spatial control. In parallel, the increase in local temperature was recorded by the ND nanothermometers. This approach represents a great step forward to record local temperature changes in different cellular environments inside cells and correlate these with thermal biology.
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Affiliation(s)
- Yingke Wu
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Md Noor A Alam
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Institute
of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | | | - Anna Ermakova
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Institute
for Physics, Johannes Gutenberg University
Mainz, Staudingerweg
7, 55128 Mainz, Germany
| | - Stephan Fischer
- Institute
of Pharmacology and Toxicology, University
of Ulm Medical Center, 89081 Ulm, Germany
| | - Holger Barth
- Institute
of Pharmacology and Toxicology, University
of Ulm Medical Center, 89081 Ulm, Germany
| | - Manfred Wagner
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Marco Raabe
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Institute
of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Email for M.R.:
| | - Fedor Jelezko
- Institute
for Quantum Optics, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Email for F.J.:
| | - Tanja Weil
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Institute
of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Email for T.W.:
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24
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Rajagopal MC, Sinha S. Cellular Thermometry Considerations for Probing Biochemical Pathways. Cell Biochem Biophys 2021; 79:359-373. [PMID: 33797706 DOI: 10.1007/s12013-021-00979-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2021] [Indexed: 12/28/2022]
Abstract
Temperature is a fundamental thermodynamic property that can serve as a probe of biochemical reactions. Extracellular thermometry has previously been used to probe cancer metabolism and thermoregulation, with measured temperature changes of ~1-2 K in tissues, consistent with theoretical predictions. In contrast, previous intracellular thermometry studies remain disputed due to reports of >1 K intracellular temperature rises over 5 min or more that are inconsistent with theory. Thus, the origins of such anomalous temperature rises remain unclear. An improved quantitative understanding of intracellular thermometry is necessary to provide a clearer perspective for future measurements. Here, we develop a generalizable framework for modeling cellular heat diffusion over a range of subcellular-to-tissue length scales. Our model shows that local intracellular temperature changes reach measurable limits (>0.1 K) only when exogenously stimulated. On the other hand, extracellular temperatures can be measurable (>0.1 K) in tissues even from endogenous biochemical pathways. Using these insights, we provide a comprehensive approach to choosing an appropriate cellular thermometry technique by analyzing thermogenic reactions of different heat rates and time constants across length scales ranging from subcellular to tissues. Our work provides clarity on cellular heat diffusion modeling and on the required thermometry approach for probing thermogenic biochemical pathways.
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Affiliation(s)
- Manjunath C Rajagopal
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Sanjiv Sinha
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
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25
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Abstract
Temperature is an important factor in the process of life, as thermal energy transfer participates in all biological events in organisms. Due to technical limitations, there is still a lot more information to be explored regarding the correlation between life activities and temperature changes. In recent years, the emergence of a variety of new temperature measurement methods has facilitated further research in this field. Here, we introduce the latest advances in temperature sensors for biological detection and their related applications in metabolic research. Various technologies are discussed in terms of their advantages and shortcomings, and future prospects are presented.
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Affiliation(s)
- Fangxu Wang
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yuexia Han
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Ning Gu
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
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26
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Sotoma S, Zhong C, Kah JCY, Yamashita H, Plakhotnik T, Harada Y, Suzuki M. In situ measurements of intracellular thermal conductivity using heater-thermometer hybrid diamond nanosensors. SCIENCE ADVANCES 2021; 7:7/3/eabd7888. [PMID: 33523906 PMCID: PMC7810374 DOI: 10.1126/sciadv.abd7888] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/30/2020] [Indexed: 05/21/2023]
Abstract
Understanding heat dissipation processes at nanoscale during cellular thermogenesis is essential to clarify the relationships between the heat and biological processes in cells and organisms. A key parameter determining the heat flux inside a cell is the local thermal conductivity, a factor poorly investigated both experimentally and theoretically. Here, using a nanoheater/nanothermometer hybrid made of a polydopamine encapsulating a fluorescent nanodiamond, we measured the intracellular thermal conductivities of HeLa and MCF-7 cells with a spatial resolution of about 200 nm. The mean values determined in these two cell lines are both 0.11 ± 0.04 W m-1 K-1, which is significantly smaller than that of water. Bayesian analysis of the data suggests there is a variation of the thermal conductivity within a cell. These results make the biological impact of transient temperature spikes in a cell much more feasible, and suggest that cells may use heat flux for short-distance thermal signaling.
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Affiliation(s)
- Shingo Sotoma
- Institute for Protein Research, Osaka University, Osaka, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Chongxia Zhong
- Institute for Protein Research, Osaka University, Osaka, Japan
| | - James Chen Yong Kah
- Department of Biomedical Engineering, National University of Singapore, Singapore, Singapore
| | - Hayato Yamashita
- Graduate School of Engineering Science, Osaka University, Osaka, Japan
- PRESTO, Japan Science and Technology Agency, Saitama, Japan
| | - Taras Plakhotnik
- School of Mathematics and Physics, The University of Queensland, QLD, Australia.
| | - Yoshie Harada
- Institute for Protein Research, Osaka University, Osaka, Japan.
- Quantum Information and Quantum Biology Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan
| | - Madoka Suzuki
- Institute for Protein Research, Osaka University, Osaka, Japan.
- PRESTO, Japan Science and Technology Agency, Saitama, Japan
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27
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Bastos ARN, Brites CDS, Rojas-Gutierrez PA, Ferreira RAS, Longo RL, DeWolf C, Capobianco JA, Carlos LD. Thermal properties of lipid bilayers derived from the transient heating regime of upconverting nanoparticles. NANOSCALE 2020; 12:24169-24176. [PMID: 33283824 DOI: 10.1039/d0nr06989b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Heat transfer and thermal properties at the nanoscale can be challenging to obtain experimentally. These are potentially relevant for understanding thermoregulation in cells. Experimental data from the transient heating regime in conjunction with a model based on the energy conservation enable the determination of the specific heat capacities for all components of a nanoconstruct, namely an upconverting nanoparticle and its conformal lipid bilayer coating. This approach benefits from a very simple, cost-effective and non-invasive optical setup to measure the thermal parameters at the nanoscale. The time-dependent model developed herein lays the foundation to describe the dynamics of heat transfer at the nanoscale and were used to understand the heat dissipation by lipid bilayers.
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Affiliation(s)
- Ana R N Bastos
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193, Aveiro, Portugal.
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28
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Cellular thermogenesis compensates environmental temperature fluctuations for maintaining intracellular temperature. Biochem Biophys Res Commun 2020; 533:70-76. [PMID: 32928506 DOI: 10.1016/j.bbrc.2020.08.110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 08/29/2020] [Indexed: 11/23/2022]
Abstract
Temperature governs states and dynamics of all biological molecules, and several cellular processes are often heat sources and/or sinks. Technical achievement of intracellular thermometry enables us to measure intracellular temperature, and it can offer novel perspectives in biology and medicine. However, little is known that changes of intracellular temperature throughout the cell-cycle and the manner of which cells regulates their thermogenesis in response to fluctuation of the environmental temperature. Here, cell-cycle-dependent changes of intracellular temperature were reconstructed from the snapshots of cell population at single-cell resolution using ergodic analysis for asynchronously cultured HeLa cells expressing a genetically encoded thermometry. Intracellular temperature is highest at G1 phase, and it gradually decreases along cell-cycle progression and increases abruptly during mitosis. Cells easily heated up are harder to cool down and vice versa, especially at G1/S phases. Together, intracellular thermogenesis depends on cell-cycle phases and it maintains intracellular temperature through compensating environmental temperature fluctuations.
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29
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Affiliation(s)
- Robert S Balaban
- National Heath, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
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30
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Yoshikawa Y, Shigeto S. A Simple Calibration Method of Anti-Stokes-Stokes Raman Intensity Ratios Using the Water Spectrum for Intracellular Temperature Measurements. APPLIED SPECTROSCOPY 2020; 74:1295-1296. [PMID: 32462906 DOI: 10.1177/0003702820933908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Presented here is a facile and practical method for calibrating anti-Stokes-Stokes intensity ratios in low-frequency Raman spectra that is devised specifically for temperature measurements inside cells. The proposed method uses as an intensity standard the low-frequency Raman spectrum of liquid water, a major molecular component of cells, whose temperature is independently measured with a thermocouple. Rather than calibrating pixel intensities themselves, we obtain a correction factor at each Raman shift in the 20-200 cm-1 region by dividing the anti-Stokes-Stokes intensity ratio calculated theoretically from the Boltzmann factor at the known temperature by that obtained experimentally. The validity of the correction curve so obtained is confirmed by measuring water at other temperatures. The anti-Stokes-Stokes intensity ratios that have been subjected to our calibration are well fitted with the Boltzmann factor within ∼1% errors and yield water temperatures in fairly good agreement with the thermocouple temperature (an average difference ∼1 ℃). The present method requires only 15 min of spectral acquisition time for calibration, which is 50 times shorter than that in a recently reported calibration method using the pure rotational Raman spectrum of N2. We envision that it will be an effective asset in Raman thermometry and its applications to cellular thermogenesis and thermoregulation.
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Affiliation(s)
- Yuki Yoshikawa
- Department of Chemistry, Kwansei Gakuin University, Sanda, Japan
| | - Shinsuke Shigeto
- Department of Chemistry, Kwansei Gakuin University, Sanda, Japan
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31
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Zhou J, Del Rosal B, Jaque D, Uchiyama S, Jin D. Advances and challenges for fluorescence nanothermometry. Nat Methods 2020; 17:967-980. [PMID: 32989319 DOI: 10.1038/s41592-020-0957-y] [Citation(s) in RCA: 185] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 08/17/2020] [Indexed: 12/12/2022]
Abstract
Fluorescent nanothermometers can probe changes in local temperature in living cells and in vivo and reveal fundamental insights into biological properties. This field has attracted global efforts in developing both temperature-responsive materials and detection procedures to achieve sub-degree temperature resolution in biosystems. Recent generations of nanothermometers show superior performance to earlier ones and also offer multifunctionality, enabling state-of-the-art functional imaging with improved spatial, temporal and temperature resolutions for monitoring the metabolism of intracellular organelles and internal organs. Although progress in this field has been rapid, it has not been without controversy, as recent studies have shown possible biased sensing during fluorescence-based detection. Here, we introduce the design principles and advances in fluorescence nanothermometry, highlight application achievements, discuss scenarios that may lead to biased sensing, analyze the challenges ahead in terms of both fundamental issues and practical implementations, and point to new directions for improving this interdisciplinary field.
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Affiliation(s)
- Jiajia Zhou
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, Australia.
| | - Blanca Del Rosal
- ARC Centre of Excellence for Nanoscale Biophotonics, RMIT University, Melbourne, Australia
| | - Daniel Jaque
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria, IRYCIS, Madrid, Spain. .,Fluorescence Imaging Group, Departamento de Física de Materiales-Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain.
| | - Seiichi Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Dayong Jin
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, Australia.,Department of Biomedical Engineering, Southern University of Science and Technology, Guangdong, China
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32
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Piñol R, Zeler J, Brites CDS, Gu Y, Téllez P, Carneiro Neto AN, da Silva TE, Moreno-Loshuertos R, Fernandez-Silva P, Gallego AI, Martinez-Lostao L, Martínez A, Carlos LD, Millán A. Real-Time Intracellular Temperature Imaging Using Lanthanide-Bearing Polymeric Micelles. NANO LETTERS 2020; 20:6466-6472. [PMID: 32787172 DOI: 10.1021/acs.nanolett.0c02163] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Measurement of thermogenesis in individual cells is a remarkable challenge due to the complexity of the biochemical environment (such as pH and ionic strength) and to the rapid and yet not well-understood heat transfer mechanisms throughout the cell. Here, we present a unique system for intracellular temperature mapping in a fluorescence microscope (uncertainty of 0.2 K) using rationally designed luminescent Ln3+-bearing polymeric micellar probes (Ln = Sm, Eu) incubated in breast cancer MDA-MB468 cells. Two-dimensional (2D) thermal images recorded increasing the temperature of the cells culture medium between 296 and 304 K shows inhomogeneous intracellular temperature progressions up to ∼20 degrees and subcellular gradients of ∼5 degrees between the nucleolus and the rest of the cell, illustrating the thermogenic activity of the different organelles and highlighting the potential of this tool to study intracellular processes.
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Affiliation(s)
- Rafael Piñol
- ICMA, Institute of Materials Science of Aragon, CSIC, University of Zaragoza, 50008 Zaragoza, Spain
| | - Justyna Zeler
- Phantom-g, CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
- Faculty of Chemistry, University of Wroclaw, Wroclaw 50-302, Poland
| | - Carlos D S Brites
- Phantom-g, CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Yuanyu Gu
- ICMA, Institute of Materials Science of Aragon, CSIC, University of Zaragoza, 50008 Zaragoza, Spain
- School of Materials Science and Engineering, Nanjing Tech University, 210009 Nanjing, People's Republic of China
| | - Pedro Téllez
- Servicio de Apoyo a la Investigación, University of Zaragoza, C/Pedro Cerbuna 10, 50006 Zaragoza, Spain
| | - Albano N Carneiro Neto
- Phantom-g, CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Thiago E da Silva
- Phantom-g, CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
- Department of Fundamental Chemistry, Federal University of Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Raquel Moreno-Loshuertos
- Departamento de Bioquímica, Biología Molecular y Celular, University of Zaragoza, 50018 Zaragoza, Spain
| | - Patrício Fernandez-Silva
- Departamento de Bioquímica, Biología Molecular y Celular, University of Zaragoza, 50018 Zaragoza, Spain
| | - Ana Isabel Gallego
- Departamento de Bioquímica, Biología Molecular y Celular, University of Zaragoza, 50018 Zaragoza, Spain
| | - Luis Martinez-Lostao
- Departamento de Bioquímica, Biología Molecular y Celular, University of Zaragoza, 50018 Zaragoza, Spain
| | - Abelardo Martínez
- Departamento de Electrónica de Potencia, I3A, University of Zaragoza, 50018 Zaragoza, Spain
| | - Luís D Carlos
- Phantom-g, CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Angel Millán
- ICMA, Institute of Materials Science of Aragon, CSIC, University of Zaragoza, 50008 Zaragoza, Spain
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33
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Figueroa B, Hu R, Rayner SG, Zheng Y, Fu D. Real-Time Microscale Temperature Imaging by Stimulated Raman Scattering. J Phys Chem Lett 2020; 11:7083-7089. [PMID: 32786960 DOI: 10.1021/acs.jpclett.0c02029] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Microscale thermometry of aqueous solutions is essential to understand the dynamics of local heat generation and dissipation in chemical and biological systems. A wide variety of fluorescent probes have been developed to map temperature changes with submicrometer resolution, but they often suffer from the uncertainty associated with microenvironment-dependent fluorescent properties. In this work, we develop a label-free ratiometric stimulated Raman scattering (SRS) microscopy technique to quantify microscale temperature by monitoring the O-H Raman stretching modes of water. By tracking the ratio changes of the hydrogen-bonding O-H band and the isosbestic band, we can directly quantify the temperature of water-based environments in real time without exogenous contrast agents. We demonstrate real-time measurement of localized intracellular and extracellular temperature changes due to laser absorption. This high-speed nonlinear optical imaging technique has the potential for in situ microscale imaging of thermogenesis in both chemical and biological systems.
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Affiliation(s)
- Benjamin Figueroa
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Ruoqian Hu
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Samuel G Rayner
- Department of Bioengineering, University of Washington, Seattle, Washington 98195, United States
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, Washington 98109, United States
| | - Ying Zheng
- Department of Bioengineering, University of Washington, Seattle, Washington 98195, United States
| | - Dan Fu
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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34
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Fujiwara M, Sun S, Dohms A, Nishimura Y, Suto K, Takezawa Y, Oshimi K, Zhao L, Sadzak N, Umehara Y, Teki Y, Komatsu N, Benson O, Shikano Y, Kage-Nakadai E. Real-time nanodiamond thermometry probing in vivo thermogenic responses. SCIENCE ADVANCES 2020; 6:eaba9636. [PMID: 32917703 PMCID: PMC7486095 DOI: 10.1126/sciadv.aba9636] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 07/22/2020] [Indexed: 05/24/2023]
Abstract
Real-time temperature monitoring inside living organisms provides a direct measure of their biological activities. However, it is challenging to reduce the size of biocompatible thermometers down to submicrometers, despite their potential applications for the thermal imaging of subtissue structures with single-cell resolution. Here, using quantum nanothermometers based on optically accessible electron spins in nanodiamonds, we demonstrate in vivo real-time temperature monitoring inside Caenorhabditis elegans worms. We developed a microscope system that integrates a quick-docking sample chamber, particle tracking, and an error correction filter for temperature monitoring of mobile nanodiamonds inside live adult worms with a precision of ±0.22°C. With this system, we determined temperature increases based on the worms' thermogenic responses during the chemical stimuli of mitochondrial uncouplers. Our technique demonstrates the submicrometer localization of temperature information in living animals and direct identification of their pharmacological thermogenesis, which may allow for quantification of their biological activities based on temperature.
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Affiliation(s)
- Masazumi Fujiwara
- Department of Chemistry, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan.
| | - Simo Sun
- Food and Human Health Sciences, Graduate School of Human Life Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Alexander Dohms
- Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany
| | - Yushi Nishimura
- Department of Chemistry, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Ken Suto
- Department of Chemistry, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Yuka Takezawa
- Food and Human Health Sciences, Graduate School of Human Life Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Keisuke Oshimi
- Department of Chemistry, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Li Zhao
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, P. R. China
| | - Nikola Sadzak
- Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany
| | - Yumi Umehara
- Department of Chemistry, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Yoshio Teki
- Department of Chemistry, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Naoki Komatsu
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Oliver Benson
- Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany
| | - Yutaka Shikano
- Quantum Computing Center, Keio University, 3-14-1 Hiyoshi Kohoku, Yokohama 223-8522, Japan.
- Institute for Quantum Studies, Chapman University, 1 University Dr., Orange, CA 92866, USA
| | - Eriko Kage-Nakadai
- Food and Human Health Sciences, Graduate School of Human Life Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan.
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35
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Liu CF, Leong WH, Xia K, Feng X, Finkler A, Denisenko A, Wrachtrup J, Li Q, Liu RB. Ultra-sensitive hybrid diamond nanothermometer. Natl Sci Rev 2020; 8:nwaa194. [PMID: 34691635 PMCID: PMC8288462 DOI: 10.1093/nsr/nwaa194] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 05/21/2020] [Accepted: 08/21/2020] [Indexed: 01/08/2023] Open
Abstract
Abstract
Nitrogen-vacancy (NV) centers in diamond are promising quantum sensors because of their long spin coherence time under ambient conditions. However, their spin resonances are relatively insensitive to non-magnetic parameters such as temperature. A magnetic-nanoparticle-nanodiamond hybrid thermometer, where the temperature change is converted to the magnetic field variation near the Curie temperature, were demonstrated to have enhanced temperature sensitivity ($11{\rm{\,\,mK\,\,H}}{{\rm{z}}^{ - 1/2}}$) (Wang N, Liu G-Q and Leong W-H et al. Phys Rev X 2018; 8: 011042), but the sensitivity was limited by the large spectral broadening of ensemble spins in nanodiamonds. To overcome this limitation, here we show an improved design of a hybrid nanothermometer using a single NV center in a diamond nanopillar coupled with a single magnetic nanoparticle of copper-nickel alloy, and demonstrate a temperature sensitivity of $76{\rm{\,\,\mu K\,\,H}}{{\rm{z}}^{ - 1/2}}$. This hybrid design enables detection of 2 mK temperature changes with temporal resolution of 5 ms. The ultra-sensitive nanothermometer offers a new tool to investigate thermal processes in nanoscale systems.
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Affiliation(s)
| | | | | | - Xi Feng
- Department of Physics, The Chinese University of Hong Kong, Hong Kong, China
| | | | - Andrej Denisenko
- 3rd Institute of Physics and Center for Applied Quantum Technologies, University of Stuttgart, 70569 Stuttgart, Germany
| | - Jörg Wrachtrup
- 3rd Institute of Physics and Center for Applied Quantum Technologies, University of Stuttgart, 70569 Stuttgart, Germany
- Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany
| | - Quan Li
- Corresponding author. E-mail:
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36
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Oyama K, Gotoh M, Hosaka Y, Oyama TG, Kubonoya A, Suzuki Y, Arai T, Tsukamoto S, Kawamura Y, Itoh H, Shintani SA, Yamazawa T, Taguchi M, Ishiwata S, Fukuda N. Single-cell temperature mapping with fluorescent thermometer nanosheets. J Gen Physiol 2020; 152:151786. [PMID: 32421782 PMCID: PMC7398143 DOI: 10.1085/jgp.201912469] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 04/17/2020] [Indexed: 01/09/2023] Open
Abstract
Recent studies using intracellular thermometers have shown that the temperature inside cultured single cells varies heterogeneously on the order of 1°C. However, the reliability of intracellular thermometry has been challenged both experimentally and theoretically because it is, in principle, exceedingly difficult to exclude the effects of nonthermal factors on the thermometers. To accurately measure cellular temperatures from outside of cells, we developed novel thermometry with fluorescent thermometer nanosheets, allowing for noninvasive global temperature mapping of cultured single cells. Various types of cells, i.e., HeLa/HEK293 cells, brown adipocytes, cardiomyocytes, and neurons, were cultured on nanosheets containing the temperature-sensitive fluorescent dye europium (III) thenoyltrifluoroacetonate trihydrate. First, we found that the difference in temperature on the nanosheet between nonexcitable HeLa/HEK293 cells and the culture medium was less than 0.2°C. The expression of mutated type 1 ryanodine receptors (R164C or Y523S) in HEK293 cells that cause Ca2+ leak from the endoplasmic reticulum did not change the cellular temperature greater than 0.1°C. Yet intracellular thermometry detected an increase in temperature of greater than ∼2°C at the endoplasmic reticulum in HeLa cells upon ionomycin-induced intracellular Ca2+ burst; global cellular temperature remained nearly constant within ±0.2°C. When rat neonatal cardiomyocytes or brown adipocytes were stimulated by a mitochondrial uncoupling reagent, the temperature was nearly unchanged within ±0.1°C. In cardiomyocytes, the temperature was stable within ±0.01°C during contractions when electrically stimulated at 2 Hz. Similarly, when rat hippocampal neurons were electrically stimulated at 0.25 Hz, the temperature was stable within ±0.03°C. The present findings with nonexcitable and excitable cells demonstrate that heat produced upon activation in single cells does not uniformly increase cellular temperature on a global basis, but merely forms a local temperature gradient on the order of ∼1°C just proximal to a heat source, such as the endoplasmic/sarcoplasmic reticulum ATPase.
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Affiliation(s)
- Kotaro Oyama
- Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, Gunma, Japan.,Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Saitama, Japan.,Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan.,Department of Physics, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Mizuho Gotoh
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan.,Department of Physics, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Yuji Hosaka
- Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, Gunma, Japan
| | - Tomoko G Oyama
- Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, Gunma, Japan
| | - Aya Kubonoya
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
| | - Yuma Suzuki
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
| | - Tomomi Arai
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan.,Department of Physics, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Seiichi Tsukamoto
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
| | - Yuki Kawamura
- Department of Pure and Applied Physics, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Hideki Itoh
- Department of Pure and Applied Physics, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan.,Epithelial Biology Laboratory, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore
| | - Seine A Shintani
- Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Aichi, Japan
| | - Toshiko Yamazawa
- Department of Molecular Physiology, The Jikei University School of Medicine, Tokyo, Japan
| | - Mitsumasa Taguchi
- Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, Gunma, Japan
| | - Shin'ichi Ishiwata
- Department of Physics, Faculty of Science and Engineering, Waseda University, Tokyo, Japan
| | - Norio Fukuda
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
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37
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Tanaka S, Shimamura K. Temperature relaxation in binary hard-sphere mixture system: Molecular dynamics and kinetic theory study. J Chem Phys 2020; 153:034114. [PMID: 32716157 DOI: 10.1063/5.0011181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Computational schemes to describe the temperature relaxation in the binary hard-sphere mixture system are given on the basis of molecular dynamics (MD) simulation and renormalized kinetic theory. Event-driven MD simulations are carried out for three model systems in which the initial temperatures and the ratios of diameter and mass of two components are different to study the temporal evolution of each component temperature in nanoscale molecular conditions mimicking those in living cells. On the other hand, the temperature changes of the two components are also described in terms of a mean-field kinetic theory with the correlation functions calculated in the Percus-Yevick approximation. The calculated results by both the computational approaches have shown fair agreement with each other, whereas slight deviations have been found in the temporal range of femto- to picoseconds when the initial temperatures of the two components are significantly different, such as 300 K vs 1000 K. This discrepancy can be ascribed to the fast intra-component temperature relaxation assumed in the kinetic theory, and its violation in the MD simulations can be evaluated in terms of the Kullback-Leibler divergence between the equilibrated Maxwell-Boltzmann distribution at each temperature and the actual non-equilibrium velocity distribution realized in the MD. Thus, the present analysis provides a quantitative basis for addressing the temperature inhomogeneities experimentally observed in nanoscale crowding conditions.
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Affiliation(s)
- Shigenori Tanaka
- Graduate School of System Informatics, Kobe University, Kobe 657-8501, Japan
| | - Kohei Shimamura
- Department of Physics, Kumamoto University, Kumamoto 860-8555, Japan
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38
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Suzuki M, Plakhotnik T. The challenge of intracellular temperature. Biophys Rev 2020; 12:593-600. [PMID: 32172449 PMCID: PMC7242542 DOI: 10.1007/s12551-020-00683-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 03/02/2020] [Indexed: 02/07/2023] Open
Abstract
This short review begins with a brief introductory summary of luminescence nanothermometry. Current applications of luminescence nanothermometry are introduced in biological contexts. Then, theoretical bases of the “temperature” that luminescence nanothermometry determines are discussed. This argument is followed by the 105 gap issue between simple calculation and the measurements reported in literatures. The gap issue is challenged by recent literatures reporting single-cell thermometry using non-luminescent probes, as well as a report that determines the thermal conductivity of a single lipid bilayer using luminescence nanothermometry. In the end, we argue if we can be optimistic about the solution of the 105 gap issue.
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Affiliation(s)
- Madoka Suzuki
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Taras Plakhotnik
- School of Mathematics and Physics, The University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia
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39
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Nanoscale Quantum Thermal Conductance at Water Interface: Green's Function Approach Based on One-Dimensional Phonon Model. Molecules 2020; 25:molecules25051185. [PMID: 32151110 PMCID: PMC7179406 DOI: 10.3390/molecules25051185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 02/17/2020] [Accepted: 02/25/2020] [Indexed: 12/27/2022] Open
Abstract
We have derived the fundamental formula of phonon transport in water for the evaluation of quantum thermal conductance by using a one-dimensional phonon model based on the nonequilibrium Green’s function method. In our model, phonons are excited as quantum waves from the left or right reservoir and propagate from left to right of H2O layer or vice versa. We have assumed these reservoirs as being of periodic structures, whereas we can also model the H2O sandwiched between these reservoirs as having aperiodic structures of liquid containing N water molecules. We have extracted the dispersion curves from the experimental absorption spectra of the OH stretching and intermolecular modes of water molecules, and calculated phonon transmission function and quantum thermal conductance. In addition, we have simplified the formulation of the transmission function by employing a case of one water molecule (N=1). From this calculation, we have obtained the characteristic that the transmission probability is almost unity at the frequency bands of acoustic and optical modes, and the transmission probability vanishes by the phonon attenuation reflecting the quantum tunnel effect outside the bands of these two modes. The classical limit of the thermal conductance calculated by our formula agreed with the literature value (order of 10−10 W/K) in high temperature regime (>300 K). The present approach is powerful enough to be applicable to molecular systems containing proteins as well, and to evaluate their thermal conductive characteristics.
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40
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Short-term temperature change detections and frequency signals in single cultured cells using a microfabricated thermistor. SENSING AND BIO-SENSING RESEARCH 2020. [DOI: 10.1016/j.sbsr.2019.100309] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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41
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Ogle MM, Smith McWilliams AD, Jiang B, Martí AA. Latest Trends in Temperature Sensing by Molecular Probes. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.201900255] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Meredith M. Ogle
- Department of ChemistryRice University 6100 Main St MS60 Houston TX 77005 USA
| | | | - Bo Jiang
- Department of ChemistryRice University 6100 Main St MS60 Houston TX 77005 USA
| | - Angel A. Martí
- Department of ChemistryRice University 6100 Main St MS60 Houston TX 77005 USA
- Department of Bioengineering, and Department of Materials Science & NanoengineeringRice University 6100 Main Houston TX 77005 USA
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42
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A Note on the Consequences of a Hot Mitochondrion: Some Recent Developments and Open Questions. ACTA ACUST UNITED AC 2020. [DOI: 10.26565/2075-3810-2020-43-02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Background: Chrétien and co-workers (PLOS Biology. 2018;16(1):e2003992) recently suggested that the mitochondrion might possibly be hotter than its surrounding (by as much as 10°C). Objectives: To examine the validity of this claim and review the possible implications and repercussion of such a claim – if true – on some aspects of mitochondrial biochemistry and biophysics. Results: Both the chemical gradient and the electrical gradient Gibbs energy terms in the central equation of chemiosmotic theory are temperature dependent, the first explicitly and the second implicitly. A hotter mitochondrion – as claimed – would imply a 3% correction in the chemical gradient term, but we cannot estimate the corresponding effect on the electrical term at this time since the functional dependence of the voltage on the temperature is not known to the best of the authors’ knowledge. Further, if this claim is true and to the extent claimed (10°C), this may imply some heat-engine character for mitochondrial thermodynamic operation albeit this may only represent 4% at most. Conclusions: Doubts and criticisms regarding the suggestion of a hotter mitochondrion have been raised and are briefly discussed. These doubts are contrasted with some data and considerations that support the claim of a hotter mitochondrion. It is concluded that the mitochondrion is probably hotter than its environment but not to the extent claimed by Chrétien et al. and that the thermodynamic efficiency and the mode of operation of the mitochondrion as an electrochemical battery are very slightly perturbed by even the maximum claimed revision of the temperature of its operation.
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43
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Uchiyama S. Fluorescent Sensors Based on a Novel Functional Design: Combination of an Environment-sensitive Fluorophore with Polymeric and Self-assembled Architectures. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.1116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Seiichi Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
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44
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Rajagopal MC, Brown JW, Gelda D, Valavala KV, Wang H, Llano DA, Gillette R, Sinha S. Transient heat release during induced mitochondrial proton uncoupling. Commun Biol 2019; 2:279. [PMID: 31372518 PMCID: PMC6659641 DOI: 10.1038/s42003-019-0535-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 07/08/2019] [Indexed: 01/19/2023] Open
Abstract
Non-shivering thermogenesis through mitochondrial proton uncoupling is one of the dominant thermoregulatory mechanisms crucial for normal cellular functions. The metabolic pathway for intracellular temperature rise has widely been considered as steady-state substrate oxidation. Here, we show that a transient proton motive force (pmf) dissipation is more dominant than steady-state substrate oxidation in stimulated thermogenesis. Using transient intracellular thermometry during stimulated proton uncoupling in neurons of Aplysia californica, we observe temperature spikes of ~7.5 K that decay over two time scales: a rapid decay of ~4.8 K over ~1 s followed by a slower decay over ~17 s. The rapid decay correlates well in time with transient electrical heating from proton transport across the mitochondrial inner membrane. Beyond ~33 s, we do not observe any heating from intracellular sources, including substrate oxidation and pmf dissipation. Our measurements demonstrate the utility of transient thermometry in better understanding the thermochemistry of mitochondrial metabolism.
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Affiliation(s)
- Manjunath C. Rajagopal
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
| | - Jeffrey W. Brown
- College of Medicine, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
| | - Dhruv Gelda
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
| | - Krishna V. Valavala
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
| | - Huan Wang
- Re3 Innovative Neuroscience Institute, Sarasota, FL USA
| | - Daniel A. Llano
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
| | - Rhanor Gillette
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
| | - Sanjiv Sinha
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
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45
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Temperature imaging using a cationic linear fluorescent polymeric thermometer and fluorescence lifetime imaging microscopy. Nat Protoc 2019; 14:1293-1321. [DOI: 10.1038/s41596-019-0145-7] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 01/25/2019] [Indexed: 12/31/2022]
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46
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Fujita H, Zhong C, Arai S, Suzuki M. Bright Dots and Smart Optical Microscopy to Probe Intracellular Events in Single Cells. Front Bioeng Biotechnol 2019; 6:204. [PMID: 30662896 PMCID: PMC6328461 DOI: 10.3389/fbioe.2018.00204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 12/12/2018] [Indexed: 11/13/2022] Open
Abstract
Probing intracellular events is a key step in developing new biomedical methodologies. Optical microscopy has been one of the best options to observe biological samples at single cell and sub-cellular resolutions. Morphological changes are readily detectable in brightfield images. When stained with fluorescent molecules, distributions of intracellular organelles, and biological molecules are made visible using fluorescence microscopes. In addition to these morphological views of cells, optical microscopy can reveal the chemical and physical status of defined intracellular spaces. This review begins with a brief overview of genetically encoded fluorescent probes and small fluorescent chemical dyes. Although these are the most common approaches, probing is also made possible by using tiny materials that are incorporated into cells. When these tiny materials emit enough photons, it is possible to draw conclusions about the environment in which the tiny material resides. Recent advances in these tiny but sufficiently bright fluorescent materials are nextly reviewed to show their applications in tracking target molecules and in temperature imaging of intracellular spots. The last section of this review addresses purely optical methods for reading intracellular status without staining with probes. These non-labeling methods are especially essential when biospecimens are thereafter required for in vivo uses, such as in regenerative medicine.
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Affiliation(s)
- Hideaki Fujita
- WASEDA Bioscience Research Institute in Singapore, Singapore, Singapore
| | - Chongxia Zhong
- Institute for Protein Research, Osaka University, Osaka, Japan
| | - Satoshi Arai
- Research Institute for Science and Engineering, Waseda University, Tokyo, Japan
- PRIME-AMED, Tokyo, Japan
| | - Madoka Suzuki
- Institute for Protein Research, Osaka University, Osaka, Japan
- PRESTO, Japan Science and Technology Agency, Saitama, Japan
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47
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Sekiguchi T, Sotoma S, Harada Y. Fluorescent nanodiamonds as a robust temperature sensor inside a single cell. Biophys Physicobiol 2018; 15:229-234. [PMID: 30450272 PMCID: PMC6234897 DOI: 10.2142/biophysico.15.0_229] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/04/2018] [Indexed: 12/20/2022] Open
Abstract
Thermometers play an important role to study the biological significance of temperature. Fluorescent nanodiamonds (FNDs) with negatively-charged nitrogen-vacancy centers, a novel type of fluorescence-based temperature sensor, have physicochemical inertness, low cytotoxicity, extremely stable fluorescence, and unique magneto-optical properties that allow us to measure the temperature at the nanoscale level inside single cells. Here, we demonstrate that the thermosensing ability of FNDs is hardly influenced by environmental factors, such as pH, ion concentration, viscosity, molecular interaction, and organic solvent. This robustness renders FNDs reliable thermometers even under complex biological cellular environment. Moreover, the simple protocol developed here for measuring the absolute temperature inside a single cell using a single FND enables successful temperature measurement in a cell with an accuracy better than ±1°C.
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Affiliation(s)
- Takeharu Sekiguchi
- Institute for Protein Research, Osaka University, Suita, Osaka 565-0871, Japan
| | - Shingo Sotoma
- Institute for Protein Research, Osaka University, Suita, Osaka 565-0871, Japan.,Japan Society for the Promotion of Science (JSPS), Chiyoda, Tokyo 102-0083, Japan
| | - Yoshie Harada
- Institute for Protein Research, Osaka University, Suita, Osaka 565-0871, Japan.,Quantum Information and Quantum Biology Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka 565-0871, Japan
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48
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Okabe K, Sakaguchi R, Shi B, Kiyonaka S. Intracellular thermometry with fluorescent sensors for thermal biology. Pflugers Arch 2018; 470:717-731. [PMID: 29397424 PMCID: PMC5942359 DOI: 10.1007/s00424-018-2113-4] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 01/16/2018] [Accepted: 01/17/2018] [Indexed: 12/27/2022]
Abstract
Temperature influences the activities of living organisms at various levels. Cells not only detect environmental temperature changes through their unique temperature-sensitive molecular machineries but also muster an appropriate response to the temperature change to maintain their inherent functions. Despite the fundamental involvement of temperature in physiological phenomena, the mechanism by which cells produce and use heat is largely unknown. Recently, fluorescent thermosensors that function as thermometers in live cells have attracted much attention in biology. These new tools, made of various temperature-sensitive molecules, have allowed for intracellular thermometry at the single-cell level. Intriguing spatiotemporal temperature variations, including organelle-specific thermogenesis, have been revealed with these fluorescent thermosensors, which suggest an intrinsic connection between temperature and cell functions. Moreover, fluorescent thermosensors have shown that intracellular temperature changes at the microscopic level are largely different from those assumed for a water environment at the macroscopic level. Thus, the employment of fluorescent thermosensors will uncover novel mechanisms of intracellular temperature-assisted physiological functions.
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Affiliation(s)
- Kohki Okabe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033, Japan.
- JST, PRESTO, 4-8-1 Honcho, Kawaguchi, Saitama, 332-0012, Japan.
| | - Reiko Sakaguchi
- World Premier International Research Initiative-Institute for Integrated Cell-Material Sciences, Kyoto University, Kyoto, 606-8501, Japan
| | - Beini Shi
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Shigeki Kiyonaka
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan.
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49
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Theoretical model and characteristics of mitochondrial thermogenesis. BIOPHYSICS REPORTS 2018; 4:63-67. [PMID: 29756006 PMCID: PMC5937889 DOI: 10.1007/s41048-018-0054-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 03/22/2018] [Indexed: 11/08/2022] Open
Abstract
Based on the first law of thermodynamics and the thermal diffusion equation, the deduced theoretical model of mitochondrial thermogenesis satisfies the Laplace equation and is a special case of the thermal diffusion equation. The model settles the long-standing question of the ability to increase cellular temperature by endogenous thermogenesis and explains the thermogenic characteristics of brown adipocytes. The model and calculations also suggest that the number of free available protons is the major limiting factor for endogenous thermogenesis and its speed.
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50
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Mori Y, Voets T. Sensors and regulatory mechanisms of thermal physiology. Pflugers Arch 2018; 470:703-704. [PMID: 29675676 DOI: 10.1007/s00424-018-2138-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 03/07/2018] [Indexed: 10/17/2022]
Affiliation(s)
- Yasuo Mori
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Nishikyo-ku, Kyoto, 615-8510, Japan.
| | - Thomas Voets
- VIB Centre for Brain & Disease Research, Laboratory of Ion Channel Research, Leuven, Belgium.,Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
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