1
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Chuma S, Kiyosue K, Akiyama T, Kinoshita M, Shimazaki Y, Uchiyama S, Sotoma S, Okabe K, Harada Y. Implication of thermal signaling in neuronal differentiation revealed by manipulation and measurement of intracellular temperature. Nat Commun 2024; 15:3473. [PMID: 38724563 PMCID: PMC11082174 DOI: 10.1038/s41467-024-47542-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 03/28/2024] [Indexed: 05/12/2024] Open
Abstract
Neuronal differentiation-the development of neurons from neural stem cells-involves neurite outgrowth and is a key process during the development and regeneration of neural functions. In addition to various chemical signaling mechanisms, it has been suggested that thermal stimuli induce neuronal differentiation. However, the function of physiological subcellular thermogenesis during neuronal differentiation remains unknown. Here we create methods to manipulate and observe local intracellular temperature, and investigate the effects of noninvasive temperature changes on neuronal differentiation using neuron-like PC12 cells. Using quantitative heating with an infrared laser, we find an increase in local temperature (especially in the nucleus) facilitates neurite outgrowth. Intracellular thermometry reveals that neuronal differentiation is accompanied by intracellular thermogenesis associated with transcription and translation. Suppression of intracellular temperature increase during neuronal differentiation inhibits neurite outgrowth. Furthermore, spontaneous intracellular temperature elevation is involved in neurite outgrowth of primary mouse cortical neurons. These results offer a model for understanding neuronal differentiation induced by intracellular thermal signaling.
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Affiliation(s)
- Shunsuke Chuma
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Graduate School of Science, Osaka University, 1-1 Machikaneyamacho, Toyonaka, Osaka, 560-0043, Japan
| | - Kazuyuki Kiyosue
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka, 563-8577, Japan
| | - Taishu Akiyama
- Graduate School of Biostudies, Kyoto University, Yoshida-Konoecho, Sakyo-Ku, Kyoto, Kyoto, 606-8501, Japan
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida-Honmachi, Sakyo-Ku, Kyoto, Kyoto, 606-8501, Japan
| | - Masaki Kinoshita
- Graduate School of Biostudies, Kyoto University, Yoshida-Konoecho, Sakyo-Ku, Kyoto, Kyoto, 606-8501, Japan
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida-Honmachi, Sakyo-Ku, Kyoto, Kyoto, 606-8501, Japan
| | - Yukiho Shimazaki
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Graduate School of Science, Osaka University, 1-1 Machikaneyamacho, Toyonaka, Osaka, 560-0043, Japan
| | - Seiichi Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Shingo Sotoma
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kohki Okabe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-0033, Japan.
- JST, PRESTO, 4-8-1 Honcho, Kawaguchi, Saitama, 332-0012, Japan.
| | - Yoshie Harada
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida-Honmachi, Sakyo-Ku, Kyoto, Kyoto, 606-8501, Japan.
- Center for Quantum Information and Quantum Biology, Osaka University, 1-2 Machikaneyamacho, Toyonaka, Osaka, 560-0043, Japan.
- Premium Research Institute for Human Metaverse Medicine (WPI-PRIMe), Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
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2
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Umezawa M, Haraguchi H, Sugawara G, Sato K, Kurahashi H, Oda T, Okubo K, Soga K. Temperature imaging inside fluid devices using a ratiometric near infrared (NIR-II/III) fluorescent Y 2O 3: Nd 3+, Yb 3+, Er 3+ nanothermometer. ANAL SCI 2024:10.1007/s44211-024-00564-0. [PMID: 38619813 DOI: 10.1007/s44211-024-00564-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 03/18/2024] [Indexed: 04/16/2024]
Abstract
Luminescence thermometry is a non-contact method that can measure surface temperatures and the temperature of the area where the fluorescent probe is located, allowing temperature distribution visualizations with a camera. Ratiometric fluorescence thermometry, which uses the intensity ratio of fluorescence peaks at two wavelengths with different fluorescence intensity dependencies, is an excellent method for visualizing temperature distributions independent of the fluorophore spatial concentration, excitation light intensity and absolute fluorescence intensity. Herein, Nd3+/Yb3+/Er3+-doped Y2O3 nanomaterials with a diameter of 200 nm were prepared as phosphors for temperature distribution measurement of fluids at different temperatures. The advantages of this designed fluorescent material include non-aggregation in water and the fact that its near-infrared (NIR) fluorescence excitation (808 nm) is not absorbed by water, thereby minimizing sample heating upon irradiation. Under optical excitation at 808 nm, the ratio of the fluorescence intensities of Yb3+ (IYb; 975 nm) and Er3+ (IEr; 1550 nm), which exhibited different temperature responses, indicated the temperature distribution inside the fluid device. Thus, this technique using Nd3+/Yb3+/Er3+-doped Y2O3 is expected to be applied for temperature distribution mapping analysis inside fluidic devices as a ratiometric NIR fluorescence thermometer, which is unaffected by laser-induced heating.
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Affiliation(s)
- Masakazu Umezawa
- Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan.
| | - Hikaru Haraguchi
- Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan
| | - Gaku Sugawara
- Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan
| | - Konosuke Sato
- Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan
| | - Hiroyuki Kurahashi
- Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan
| | - Teiji Oda
- Division of Cardiovascular Surgery, Department of Surgery, Shimane University Faculty of Medicine, 89-1 Enyacho, Izumo, Shimane, 693-8501, Japan
| | - Kyohei Okubo
- Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Nagatsuta-Cho 4259, Midori-Ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Kohei Soga
- Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan.
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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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Ding H, Liu K, Zhao X, Su B, Jiang D. Thermoelectric Nanofluidics Probing Thermal Heterogeneity inside Single Cells. J Am Chem Soc 2023; 145:22433-22441. [PMID: 37812815 DOI: 10.1021/jacs.3c06085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Accurate temperature measurement in one living cell is of great significance for understanding biological functions and regulation. Here, a nanopipet electric thermometer (NET) is established for real-time intracellular temperature measurement. Based on the temperature-controlled ion migration, the temperature change in solution results in altered ion mobilities and ion distributions, which can be converted to the thermoelectric responses of NET in a galvanostatic configuration. The exponential relationship between the voltage and the temperature promises highly sensitive thermoelectric responses up to 11.1 mV K-1, which is over an order of magnitude higher than previous thermoelectric thermometry. Moreover, the NET exhibits superior thermal resolution of 25 mK and spatiotemporal resolution of 100 nm and 0.9 ms as well as excellent stability and reproducibility. Benefiting from these unique features, both thermal fluctuations in steady-state cells and heat generation and dissipation upon drug administration can be successfully monitored, which are hardly achieved by current methods. By using NET, thermal heterogeneities of single cancer cells during immunotherapy were reported first in this work, in which the increased intracellular temperature was demonstrated to be associated with the survival benefit and resistance of cancer cells in immunotherapy. This work not only provides a reliable method for microscopic temperature monitoring but also gains new insights to elucidate the mechanism of immune evasion and therapeutic resistance.
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Affiliation(s)
- Hao Ding
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Kang Liu
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Xinlu Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Bin Su
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Dechen Jiang
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, China
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5
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Brites CDS, Marin R, Suta M, Carneiro Neto AN, Ximendes E, Jaque D, Carlos LD. Spotlight on Luminescence Thermometry: Basics, Challenges, and Cutting-Edge Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302749. [PMID: 37480170 DOI: 10.1002/adma.202302749] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/05/2023] [Indexed: 07/23/2023]
Abstract
Luminescence (nano)thermometry is a remote sensing technique that relies on the temperature dependency of the luminescence features (e.g., bandshape, peak energy or intensity, and excited state lifetimes and risetimes) of a phosphor to measure temperature. This technique provides precise thermal readouts with superior spatial resolution in short acquisition times. Although luminescence thermometry is just starting to become a more mature subject, it exhibits enormous potential in several areas, e.g., optoelectronics, photonics, micro- and nanofluidics, and nanomedicine. This work reviews the latest trends in the field, including the establishment of a comprehensive theoretical background and standardized practices. The reliability, repeatability, and reproducibility of the technique are also discussed, along with the use of multiparametric analysis and artificial-intelligence algorithms to enhance thermal readouts. In addition, examples are provided to underscore the challenges that luminescence thermometry faces, alongside the need for a continuous search and design of new materials, experimental techniques, and analysis procedures to improve the competitiveness, accessibility, and popularity of the technology.
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Affiliation(s)
- Carlos D S Brites
- Phantom-g, CICECO, Departamento de Física, Universidade de Aveiro, Campus Santiago, Aveiro, 3810-193, Portugal
| | - Riccardo Marin
- Departamento de Física de Materiales, Nanomaterials for Bioimaging Group (NanoBIG), Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid, 28049, Spain
| | - Markus Suta
- Inorganic Photoactive Materials, Institute of Inorganic Chemistry and Structural Chemistry, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Albano N Carneiro Neto
- Phantom-g, CICECO, Departamento de Física, Universidade de Aveiro, Campus Santiago, Aveiro, 3810-193, Portugal
| | - Erving Ximendes
- Departamento de Física de Materiales, Nanomaterials for Bioimaging Group (NanoBIG), Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Nanomaterials for Bioimaging Group (NanoBIG), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Hospital Ramón y Cajal, Madrid, 28034, Spain
| | - Daniel Jaque
- Departamento de Física de Materiales, Nanomaterials for Bioimaging Group (NanoBIG), Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Nanomaterials for Bioimaging Group (NanoBIG), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Hospital Ramón y Cajal, Madrid, 28034, Spain
| | - Luís D Carlos
- Phantom-g, CICECO, Departamento de Física, Universidade de Aveiro, Campus Santiago, Aveiro, 3810-193, Portugal
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6
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Samolis PD, Sander MY, Hong MK, Erramilli S, Narayan O. Thermal transport across membranes and the Kapitza length from photothermal microscopy. J Biol Phys 2023:10.1007/s10867-023-09636-0. [PMID: 37477759 PMCID: PMC10397174 DOI: 10.1007/s10867-023-09636-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 05/30/2023] [Indexed: 07/22/2023] Open
Abstract
An analytical model is presented for light scattering associated with heat transport near a cell membrane that divides a complex system into two topologically distinct half-spaces. Our analysis is motivated by experiments on vibrational photothermal microscopy which have not only demonstrated remarkably high contrast and resolution, but also are capable of providing label-free local information of heat transport in complex morphologies. In the first Born approximation, the derived Green's function leads to the reconstruction of a full 3D image with photothermal contrast obtained using both amplitude and phase detection of periodic excitations. We show that important fundamental parameters including the Kapitza length and Kapitza resistance can be derived from experiments. Our goal is to spur additional experimental studies with high-frequency modulation and heterodyne detection in order to make contact with recent theoretical molecular dynamics calculations of thermal transport properties in membrane systems.
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Affiliation(s)
- Panagis D Samolis
- Department of Electrical Engineering, Boston University, Boston, MA, 02215, USA
- The Photonics Center, Boston University, Boston, MA, 02215, USA
| | - Michelle Y Sander
- Department of Electrical Engineering, Boston University, Boston, MA, 02215, USA
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
- The Photonics Center, Boston University, Boston, MA, 02215, USA
| | - Mi K Hong
- Department of Physics, Boston University, Boston, MA, 02215, USA
| | - Shyamsunder Erramilli
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA.
- The Photonics Center, Boston University, Boston, MA, 02215, USA.
- Department of Physics, Boston University, Boston, MA, 02215, USA.
| | - Onuttom Narayan
- Department of Physics, University of California Santa Cruz, Santa Cruz, CA, USA.
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7
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Ahmed I, Ali M, Elsherif M, Butt H. UV polymerization fabrication method for polymer composite based optical fiber sensors. Sci Rep 2023; 13:10823. [PMID: 37402807 DOI: 10.1038/s41598-023-33991-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 04/21/2023] [Indexed: 07/06/2023] Open
Abstract
Optical fiber (OF) sensors are critical optical devices with excellent sensing capabilities and the capacity to operate in remote and hostile environments. However, integrating functional materials and micro/nanostructures into the optical fiber systems for specific sensing applications has limitations of compatibility, readiness, poor control, robustness, and cost-effectiveness. Herein, we have demonstrated the fabrication and integration of stimuli-responsive optical fiber probe sensors using a novel, low-cost, and facile 3D printing process. Thermal stimulus-response of thermochromic pigment micro-powders was integrated with optical fibers by incorporating them into ultraviolet-sensitive transparent polymer resins and then printed via a single droplet 3D printing process. Hence, the thermally active polymer composite fibers were grown (additively manufactured) on top of the commercial optical fiber tips. Then, the thermal response was studied within the temperature range of (25-35 °C) and (25-31 °C) for unicolor and dual color pigment powders-based fiber-tip sensors, respectively. The unicolor (with color to colorless transition) and dual color (with color to color transition) powders-based sensors exhibited substantial variations in transmission and reflection spectra by reversibly increasing and decreasing temperatures. The sensitivities were calculated from the transmission spectra where average change in transmission spectra was recorded as 3.5% with every 1 °C for blue, 3% for red and 1% for orange-yellow thermochromic powders based optical fiber tip sensors. Our fabricated sensors are cost-effective, reusable, and flexible in terms of materials and process parameters. Thus, the fabrication process can potentially develop transparent and tunable thermochromic sensors for remote sensing with a much simpler manufacturing process compared to conventional and other 3D printing processes for optical fiber sensors. Moreover, this process can integrate micro/nanostructures as patterns on the optical fiber tips to increase sensitivity. The developed sensors may be employed as remote temperature sensors in biomedical and healthcare applications.
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Affiliation(s)
- Israr Ahmed
- Department of Mechanical Engineering, Khalifa University of Science and Technology, Abu Dhabi, 127788, UAE
| | - Murad Ali
- Department of Mechanical Engineering, Khalifa University of Science and Technology, Abu Dhabi, 127788, UAE.
| | | | - Haider Butt
- Department of Mechanical Engineering, Khalifa University of Science and Technology, Abu Dhabi, 127788, UAE.
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8
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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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9
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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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10
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Gu Y, Piñol R, Moreno-Loshuertos R, Brites CDS, Zeler J, Martínez A, Maurin-Pasturel G, Fernández-Silva P, Marco-Brualla J, Téllez P, Cases R, Belsué RN, Bonvin D, Carlos LD, Millán A. Local Temperature Increments and Induced Cell Death in Intracellular Magnetic Hyperthermia. ACS NANO 2023; 17:6822-6832. [PMID: 36940429 PMCID: PMC10100554 DOI: 10.1021/acsnano.3c00388] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
The generation of temperature gradients on nanoparticles heated externally by a magnetic field is crucially important in magnetic hyperthermia therapy. But the intrinsic low heating power of magnetic nanoparticles, at the conditions allowed for human use, is a limitation that restricts the general implementation of the technique. A promising alternative is local intracellular hyperthermia, whereby cell death (by apoptosis, necroptosis, or other mechanisms) is attained by small amounts of heat generated at thermosensitive intracellular sites. However, the few experiments conducted on the temperature determination of magnetic nanoparticles have found temperature increments that are much higher than the theoretical predictions, thus supporting the local hyperthermia hypothesis. Reliable intracellular temperature measurements are needed to get an accurate picture and resolve the discrepancy. In this paper, we report the real-time variation of the local temperature on γ-Fe2O3 magnetic nanoheaters using a Sm3+/Eu3+ ratiometric luminescent thermometer located on its surface during exposure to an external alternating magnetic field. We measure maximum temperature increments of 8 °C on the surface of the nanoheaters without any appreciable temperature increase on the cell membrane. Even with magnetic fields whose frequency and intensity are still well within health safety limits, these local temperature increments are sufficient to produce a small but noticeable cell death, which is enhanced considerably as the magnetic field intensity is increased to the maximum level tolerated for human use, consequently demonstrating the feasibility of local hyperthermia.
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Affiliation(s)
- Yuanyu Gu
- INMA,
Institute of Nanoscience and Materials of Aragon, CSIC-University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
- School
of Materials Science and Engineering, Nanjing
Tech University, 210009, Nanjing People’s Republic of China
| | - Rafael Piñol
- INMA,
Institute of Nanoscience and Materials of Aragon, CSIC-University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Raquel Moreno-Loshuertos
- Department
of Biochemistry and Molecular and Cellular Biology, and Institute
for Biocomputation and Physics of Complex Systems, University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Carlos D. S. Brites
- Phantom-g,
CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - 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, 14. F. Joliot-Curie Street, 50-383 Wroclaw, Poland
| | - Abelardo Martínez
- Department
of Power Electronics, I3A, University of
Zaragoza, 50018 Zaragoza, Spain
| | - Guillaume Maurin-Pasturel
- INMA,
Institute of Nanoscience and Materials of Aragon, CSIC-University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Patricio Fernández-Silva
- Department
of Biochemistry and Molecular and Cellular Biology, and Institute
for Biocomputation and Physics of Complex Systems, University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Joaquín Marco-Brualla
- Department
of Biochemistry and Molecular and Cellular Biology, and Institute
for Biocomputation and Physics of Complex Systems, University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Pedro Téllez
- INMA,
Institute of Nanoscience and Materials of Aragon, CSIC-University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Rafael Cases
- INMA,
Institute of Nanoscience and Materials of Aragon, CSIC-University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Rafael Navarro Belsué
- INMA,
Institute of Nanoscience and Materials of Aragon, CSIC-University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Debora Bonvin
- Powder
Technology Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - 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
- INMA,
Institute of Nanoscience and Materials of Aragon, CSIC-University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
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11
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Inada N. A Guide to Plant Intracellular Temperature Imaging using Fluorescent Thermometers. PLANT & CELL PHYSIOLOGY 2023; 64:7-18. [PMID: 36039974 DOI: 10.1093/pcp/pcac123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 07/06/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
All aspects of plant physiology are influenced by temperature. Changes in environmental temperature alter the temperatures of plant tissues and cells, which then affect various cellular activities, such as gene expression, protein stability and enzyme activities. In turn, changes in cellular activities, which are associated with either exothermic or endothermic reactions, can change the local temperature in cells and tissues. In the past 10 years, a number of fluorescent probes that detect temperature and enable intracellular temperature imaging have been reported. Intracellular temperature imaging has revealed that there is a temperature difference >1°C inside cells and that the treatment of cells with mitochondrial uncoupler or ionomycin can cause more than a 1°C intracellular temperature increase in mammalian cultured cells. Thermogenesis mechanisms in brown adipocytes have been revealed with the aid of intracellular temperature imaging. While there have been no reports on plant intracellular temperature imaging thus far, intracellular temperature imaging is expected to provide a new way to analyze the mechanisms underlying the various activities of plant cells. In this review, I will first summarize the recent progress in the development of fluorescent thermometers and their biological applications. I will then discuss the selection of fluorescent thermometers and experimental setup for the adaptation of intracellular temperature imaging to plant cells. Finally, possible applications of intracellular temperature imaging to investigate plant cell functions will be discussed.
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Affiliation(s)
- Noriko Inada
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai-shi, Osaka, 599-8531 Japan
- School of Agriculture, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai-shi, Osaka, 599-8531 Japan
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12
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Tsuji T, Kajimoto K, Inada N. Measurement of Intracellular Temperature in Brown Adipocytes Using a Cationic Fluorescent Polymeric Thermometer. Methods Mol Biol 2023; 2662:87-102. [PMID: 37076673 DOI: 10.1007/978-1-0716-3167-6_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
Brown adipose tissue specializes in expending energy through non-shivering thermogenesis, and many studies have associated its activity with protection and treatment of obesity and metabolic diseases. To reveal the mechanisms involved in heat production, primary cultured brown adipose cells (BACs) have been used because of their ease of genetic engineering and similarity to living tissue. However, thermogenic activity has often been evaluated as an indirect method, such as the measurement of oxygen consumption. Recently, fluorescent nanothermometers for the direct measurement of intracellular temperature have been developed and applied to elucidate the mechanisms of heat production in BACs. In this chapter, we introduce a protocol that uses a cationic fluorescent polymeric thermometer to directly measure the temperature within primary cultured BACs. We anticipate that this protocol will be beneficial in elucidating the mechanism of thermogenesis in BACs.
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Affiliation(s)
- Toshikazu Tsuji
- Kirin Central Research Institute, Kirin Holdings Company Limited, Fujisawa, Kanagawa, Japan.
| | - Kazuaki Kajimoto
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Takamatsu, Kagawa, Japan
| | - Noriko Inada
- School of Agriculture, Osaka Metropolitan University, Osaka, Japan
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13
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Romshin AM, Osypov AA, Popova IY, Zeeb VE, Sinogeykin AG, Vlasov II. Heat Release by Isolated Mouse Brain Mitochondria Detected with Diamond Thermometer. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 13:98. [PMID: 36616008 PMCID: PMC9823591 DOI: 10.3390/nano13010098] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/15/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
The production of heat by mitochondria is critical for maintaining body temperature, regulating metabolic rate, and preventing oxidative damage to mitochondria and cells. Until the present, mitochondrial heat production has been characterized only by methods based on fluorescent probes, which are sensitive to environmental variations (viscosity, pH, ionic strength, quenching, etc.). Here, for the first time, the heat release of isolated mitochondria was unambiguously measured by a diamond thermometer (DT), which is absolutely indifferent to external non-thermal parameters. We show that during total uncoupling of transmembrane potential by CCCP application, the temperature near the mitochondria rises by 4-22 °C above the ambient temperature with an absolute maximum of 45 °C. Such a broad variation in the temperature response is associated with the heterogeneity of the mitochondria themselves as well as their aggregations in the isolated suspension. Spontaneous temperature bursts with comparable amplitude were also detected prior to CCCP application, which may reflect involvement of some mitochondria to ATP synthesis or membrane potential leaking to avoid hyperproduction of reactive oxygen species. The results obtained with the diamond temperature sensor shed light on the "hot mitochondria" paradox.
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Affiliation(s)
- Alexey M. Romshin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alexander A. Osypov
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142292 Moscow, Russia
- Institute of Higher Nervous Activity and Neurophysiology of the Russian Academy of Sciences, 117485 Moscow, Russia
| | - Irina Yu. Popova
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142292 Moscow, Russia
| | - Vadim E. Zeeb
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, 142292 Moscow, Russia
| | | | - Igor I. Vlasov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
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14
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Pittman M, Ali AM, Chen Y. How sticky? How Tight? How Hot? Imaging probes for fluid viscosity, membrane tension and temperature measurements at the cellular level. Int J Biochem Cell Biol 2022; 153:106329. [PMID: 36336304 PMCID: PMC10148659 DOI: 10.1016/j.biocel.2022.106329] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/22/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022]
Abstract
We review the progress made in imaging probes for three important physical parameters: viscosity, membrane tension, and temperature, all of which play important roles in many cellular processes. Recent evidences showed that cell migration speed can be modulated by extracellular fluid viscosity; membrane tension contributes to the regulation of cell motility, exo-/endo-cytosis, and cell spread area; and temperature affects neural activity and adipocyte differentiation. We discuss the techniques implementing imaging-based probes to measure viscosity, membrane tension, and temperature at subcellular resolution dynamically. The merits and shortcomings of each technique are examined, and the future applications of the recently developed techniques are also explored.
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15
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Salerno EV, Carneiro Neto AN, Eliseeva SV, Hernández-Rodríguez MA, Lutter JC, Lathion T, Kampf JW, Petoud S, Carlos LD, Pecoraro VL. Tunable Optical Molecular Thermometers Based on Metallacrowns. J Am Chem Soc 2022; 144:18259-18271. [PMID: 36173924 DOI: 10.1021/jacs.2c04821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The effect of ligands' energy levels on thermal dependence of lanthanide emission was examined to create new molecular nanothermometers. A series of Ln2Ga8L8'L8″ metallacrowns (shorthand Ln2L8'), where Ln = Gd3+, Tb3+, or Sm3+ (H3L' = salicylhydroxamic acid (H3shi), 5-methylsalicylhydroxamic acid (H3mshi), 5-methoxysalicylhydroxamic acid (H3moshi), and 3-hydroxy-2-naphthohydroxamic acid (H3nha)) and H2L″ = isophthalic acid (H2iph), was synthesized and characterized. Within the series, ligand-centered singlet state (S1) energy levels ranged from 23,300 to 27,800 cm-1, while triplet (T1) energy levels ranged from 18,150 to 21,980 cm-1. We demonstrated that the difference between T1 levels and relevant energies of the excited 4G5/2 level of Sm3+ (17,800 cm-1) and 5D4 level of Tb3+ (20,400 cm-1) is the major parameter controlling thermal dependence of the emission intensity via the back energy transfer mechanism. However, when the energy difference between S1 and T1 levels is small (below 3760 cm-1), the S1 → T1 intersystem crossing (and its reverse, S1 ← T1) mechanism contributes to the thermal behavior of metallacrowns. Both mechanisms affect Ln3+-centered room-temperature quantum yields with values ranging from 2.07(6)% to 31.2(2)% for Tb2L8' and from 0.0267(7)% to 2.27(5)% for Sm2L8'. The maximal thermal dependence varies over a wide thermal range (ca. 150-350 K) based on energy gaps between relevant ligand-based and lanthanide-based electronic states. By mixing Tb2moshi8' with Sm2moshi8' in a 1:1 ratio, an optical thermometer with a relative thermal sensitivity larger than 3%/K at 225 K was created. Other temperature ranges are also accessible with this approach.
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Affiliation(s)
- Elvin V Salerno
- Department of Chemistry, Willard H. Dow Laboratories, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Albano N Carneiro Neto
- Phantom-g, CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro Campus de Santiago, Aveiro 3810-193, Portugal
| | - Svetlana V Eliseeva
- Centre de Biophysique Moléculaire CNRS UPR 4301, 45071 Orléans Cedex 2, France
| | - Miguel A Hernández-Rodríguez
- Phantom-g, CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro Campus de Santiago, Aveiro 3810-193, Portugal
| | - Jacob C Lutter
- Department of Chemistry, Willard H. Dow Laboratories, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Timothée Lathion
- Department of Chemistry, Willard H. Dow Laboratories, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jeff W Kampf
- Department of Chemistry, Willard H. Dow Laboratories, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Stéphane Petoud
- Centre de Biophysique Moléculaire CNRS UPR 4301, 45071 Orléans Cedex 2, France
| | - Luis D Carlos
- Phantom-g, CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro Campus de Santiago, Aveiro 3810-193, Portugal
| | - Vincent L Pecoraro
- Department of Chemistry, Willard H. Dow Laboratories, University of Michigan, Ann Arbor, Michigan 48109, United States
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16
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Zhou D, Zhuan Q, Luo Y, Liu H, Meng L, Du X, Wu G, Hou Y, Li J, Fu X. Mito-Q promotes porcine oocytes maturation by maintaining mitochondrial thermogenesis via UCP2 downregulation. Theriogenology 2022; 187:205-214. [PMID: 35644089 DOI: 10.1016/j.theriogenology.2022.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/02/2022] [Accepted: 05/11/2022] [Indexed: 12/30/2022]
Abstract
Mitochondrial thermogenesis is an adaptive response of cells to their surrounding stress. Oxidative stress is one of the common stresses during in vitro maturation (IVM) of oocytes, which leads to mitochondrial dysfunction. This study aimed to probe the effects of the mitochondria-targeted antioxidant Mito-Q on oocyte development and unravel the role of Mito-Q in mitochondrial ATP production and thermogenesis regulation. Our results showed that Mito-Q had a positive effect on porcine oocytes maturation and subsequent embryo development. During oocytes IVM, Mito-Q could reduce ATP levels and ROS, increase lipid droplets accumulation, induce autophagy, and maintain mitochondrial temperature stability. Moreover, in metaphase II (MII) oocytes, Mito-Q would induce mitochondrial uncoupling manifested by decreased ATP, attenuated mitochondrial membrane potential (MMP), and increased mitochondrial thermogenesis. Notably, the expression of mitochondrial uncoupling protein (UCP2) was significantly reduced in oocytes treated with Mito-Q. Further study indicated that specific depletion of UCP2 in oocytes also resulted in increased thermogenesis, decreased ATP and declined MMP, suggesting that UCP2 downregulation may participate in Mito-Q-induced mitochondrial uncoupling. In summary, our data demonstrate that Mito-Q promotes oocyte maturation in vitro and maintains the stability of mitochondrial thermogenesis by inhibiting UCP2 expression.
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Affiliation(s)
- Dan Zhou
- Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science, Beijing, 100193, China
| | - Qingrui Zhuan
- Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science, Beijing, 100193, China
| | - Yuwen Luo
- Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science, Beijing, 100193, China
| | - Hongyu Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science, Beijing, 100193, China
| | - Lin Meng
- State Key Laboratories of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Xingzhu Du
- Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science, Beijing, 100193, China
| | - Guoquan Wu
- Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, 650224, China
| | - Yunpeng Hou
- State Key Laboratories of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Jun Li
- Department of Reproductive Medicine, Reproductive Medical Center, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050031, China.
| | - Xiangwei Fu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science, Beijing, 100193, China; State Key Laboratory of Sheep Genetic Improvement and Healthy Breeding, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi, Xinjiang, 832000, China.
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17
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Becskei A, Rahaman S. The life and death of RNA across temperatures. Comput Struct Biotechnol J 2022; 20:4325-4336. [PMID: 36051884 PMCID: PMC9411577 DOI: 10.1016/j.csbj.2022.08.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/04/2022] [Accepted: 08/04/2022] [Indexed: 11/05/2022] Open
Abstract
Temperature is an environmental condition that has a pervasive effect on cells along with all the molecules and reactions in them. The mechanisms by which prototypical RNA molecules sense and withstand heat have been identified mostly in bacteria and archaea. The relevance of these phenomena is, however, broader, and similar mechanisms have been recently found throughout the tree of life, from sex determination in reptiles to adaptation of viral RNA polymerases, to genetic disorders in humans. We illustrate the temperature dependence of RNA metabolism with examples from the synthesis to the degradation of mRNAs, and review recently emerged questions. Are cells exposed to greater temperature variations and gradients than previously surmised? How do cells reconcile the conflicting thermal stability requirements of primary and tertiary structures of RNAs? To what extent do enzymes contribute to the temperature compensation of the reaction rates in mRNA turnover by lowering the energy barrier of the catalyzed reactions? We conclude with the ecological, forensic applications of the temperature-dependence of RNA degradation and the biotechnological aspects of mRNA vaccine production.
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