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Rakhymzhan A, Fiedler AF, Günther R, Domingue SR, Wooldridge L, Leben R, Cao Y, Bias A, Roodselaar J, Köhler R, Ulbricht C, Heidelin J, Andresen V, Beckers I, Haibel A, Duda G, Hauser AE, Niesner RA. Optimized intravital three-photon imaging of intact mouse tibia links plasma cell motility to functional states. iScience 2024; 27:110985. [PMID: 39391739 PMCID: PMC11466647 DOI: 10.1016/j.isci.2024.110985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 06/29/2024] [Accepted: 09/16/2024] [Indexed: 10/12/2024] Open
Abstract
Intravital deep bone marrow imaging is crucial to studying cellular dynamics and functions but remains challenging, and minimally invasive methods are needed. We employed a high pulse-energy 1650 nm laser to perform three-photon microscopy in vivo, reaching ≈400 μm depth in intact mouse tibia. Repetition rates of 3 and 4 MHz allowed us to analyze motility patterns of fast and rare cells within unperturbed marrow and to identify a bi-modal migratory behavior for plasma cells. Third harmonic generation (THG) was identified as a label-free marker for cellular organelles, particularly endoplasmic reticulum, indicating protein synthesis capacity. We found a strong THG signal, suggesting high antibody secretion, in one-third of plasma cells while the rest showed low signals. We discovered an inverse relationship between migratory behavior and THG signal, linking motility to functional plasma cell states. This method may enhance our understanding of marrow microenvironment effects on cellular functions.
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Affiliation(s)
- Asylkhan Rakhymzhan
- German Rheumatism Research Center – a Leibniz Institute, Biophysical Analytics, Berlin, Germany
- German Rheumatism Research Center – a Leibniz Institute, Immune Dynamics, Berlin, Germany
- Charité – Universitätsmedizin, Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Clinics for Rheumatology and Clinical Immunology, Berlin, Germany
| | - Alexander F. Fiedler
- German Rheumatism Research Center – a Leibniz Institute, Biophysical Analytics, Berlin, Germany
- Freie Universität Berlin, Dynamic and Functional in vivo Imaging, Berlin, Germany
| | - Robert Günther
- German Rheumatism Research Center – a Leibniz Institute, Biophysical Analytics, Berlin, Germany
- German Rheumatism Research Center – a Leibniz Institute, Immune Dynamics, Berlin, Germany
| | | | | | - Ruth Leben
- German Rheumatism Research Center – a Leibniz Institute, Biophysical Analytics, Berlin, Germany
- Freie Universität Berlin, Dynamic and Functional in vivo Imaging, Berlin, Germany
| | - Yu Cao
- German Rheumatism Research Center – a Leibniz Institute, Immune Dynamics, Berlin, Germany
- Charité – Universitätsmedizin, Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Clinics for Rheumatology and Clinical Immunology, Berlin, Germany
| | - Anne Bias
- German Rheumatism Research Center – a Leibniz Institute, Biophysical Analytics, Berlin, Germany
- Berlin University of Applied Sciences and Technology, Berlin, Germany
| | - Jay Roodselaar
- German Rheumatism Research Center – a Leibniz Institute, Immune Dynamics, Berlin, Germany
- Charité – Universitätsmedizin, Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Clinics for Rheumatology and Clinical Immunology, Berlin, Germany
| | - Ralf Köhler
- German Rheumatism Research Center – a Leibniz Institute, Biophysical Analytics, Berlin, Germany
- German Rheumatism Research Center – a Leibniz Institute, Immune Dynamics, Berlin, Germany
| | - Carolin Ulbricht
- German Rheumatism Research Center – a Leibniz Institute, Immune Dynamics, Berlin, Germany
- Charité – Universitätsmedizin, Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Clinics for Rheumatology and Clinical Immunology, Berlin, Germany
| | | | | | - Ingeborg Beckers
- Berlin University of Applied Sciences and Technology, Berlin, Germany
| | - Astrid Haibel
- Berlin University of Applied Sciences and Technology, Berlin, Germany
| | - Georg Duda
- Charité – Universitätsmedizin, Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Julius Wolff Institute, Berlin, Germany
| | - Anja E. Hauser
- German Rheumatism Research Center – a Leibniz Institute, Immune Dynamics, Berlin, Germany
- Charité – Universitätsmedizin, Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Clinics for Rheumatology and Clinical Immunology, Berlin, Germany
| | - Raluca A. Niesner
- German Rheumatism Research Center – a Leibniz Institute, Biophysical Analytics, Berlin, Germany
- Freie Universität Berlin, Dynamic and Functional in vivo Imaging, Berlin, Germany
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2
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Karpf S, Glöckner Burmeister N, Dubreil L, Ghosh S, Hollandi R, Pichon J, Leroux I, Henkel A, Lutz V, Jurkevičius J, Latshaw A, Kilin V, Kutscher T, Wiggert M, Saavedra-Villanueva O, Vogel A, Huber RA, Horvath P, Rouger K, Bonacina L. Harmonic Imaging of Stem Cells in Whole Blood at GHz Pixel Rate. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2401472. [PMID: 38863131 DOI: 10.1002/smll.202401472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 05/21/2024] [Indexed: 06/13/2024]
Abstract
The pre-clinical validation of cell therapies requires monitoring the biodistribution of transplanted cells in tissues of host organisms. Real-time detection of these cells in the circulatory system and identification of their aggregation state is a crucial piece of information, but necessitates deep penetration and fast imaging with high selectivity, subcellular resolution, and high throughput. In this study, multiphoton-based in-flow detection of human stem cells in whole, unfiltered blood is demonstrated in a microfluidic channel. The approach relies on a multiphoton microscope with diffractive scanning in the direction perpendicular to the flow via a rapidly wavelength-swept laser. Stem cells are labeled with metal oxide harmonic nanoparticles. Thanks to their strong and quasi-instantaneous second harmonic generation (SHG), an imaging rate in excess of 10 000 frames per second is achieved with pixel dwell times of 1 ns, a duration shorter than typical fluorescence lifetimes yet compatible with SHG. Through automated cell identification and segmentation, morphological features of each individual detected event are extracted and cell aggregates are distinguished from isolated cells. This combination of high-speed multiphoton microscopy and high-sensitivity SHG nanoparticle labeling in turbid media promises the detection of rare cells in the bloodstream for assessing novel cell-based therapies.
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Affiliation(s)
- Sebastian Karpf
- Institute of Biomedical Optics (BMO), University Of Luebeck, 23562, Luebeck, Germany
| | | | | | - Shayantani Ghosh
- Department of Applied Physics, Université de Genève, Rue de l'Ecole-de-Médecine, 20, Geneva, 1205, Switzerland
| | - Reka Hollandi
- Synthetic and Systems Biology Unit, Biological Research Centre (BRC), Szeged, H-6726, Hungary
| | | | | | - Alessandra Henkel
- Institute of Biomedical Optics (BMO), University Of Luebeck, 23562, Luebeck, Germany
| | - Valerie Lutz
- Institute of Biomedical Optics (BMO), University Of Luebeck, 23562, Luebeck, Germany
| | - Jonas Jurkevičius
- Institute of Biomedical Optics (BMO), University Of Luebeck, 23562, Luebeck, Germany
| | - Alexandra Latshaw
- Department of Applied Physics, Université de Genève, Rue de l'Ecole-de-Médecine, 20, Geneva, 1205, Switzerland
| | - Vasyl Kilin
- Department of Applied Physics, Université de Genève, Rue de l'Ecole-de-Médecine, 20, Geneva, 1205, Switzerland
| | - Tonio Kutscher
- Institute of Biomedical Optics (BMO), University Of Luebeck, 23562, Luebeck, Germany
| | - Moritz Wiggert
- Department of Applied Physics, Université de Genève, Rue de l'Ecole-de-Médecine, 20, Geneva, 1205, Switzerland
| | | | - Alfred Vogel
- Institute of Biomedical Optics (BMO), University Of Luebeck, 23562, Luebeck, Germany
| | - Robert A Huber
- Institute of Biomedical Optics (BMO), University Of Luebeck, 23562, Luebeck, Germany
| | - Peter Horvath
- Synthetic and Systems Biology Unit, Biological Research Centre (BRC), Szeged, H-6726, Hungary
| | - Karl Rouger
- Oniris, INRAE, PAnther, Nantes, F-44307, France
| | - Luigi Bonacina
- Department of Applied Physics, Université de Genève, Rue de l'Ecole-de-Médecine, 20, Geneva, 1205, Switzerland
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3
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Deng P, Liu S, Zhao Y, Zhang X, Kong Y, Liu L, Xiao Y, Yang S, Hu J, Su J, Xuan A, Xu J, Li H, Su X, Wu J, Jiang Y, Mu Y, Shao Z, Kong C, Li B. Long-working-distance high-collection-efficiency three-photon microscopy for in vivo long-term imaging of zebrafish and organoids. iScience 2024; 27:110554. [PMID: 39184441 PMCID: PMC11342284 DOI: 10.1016/j.isci.2024.110554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 05/31/2024] [Accepted: 07/17/2024] [Indexed: 08/27/2024] Open
Abstract
Zebrafish and organoids, crucial for complex biological studies, necessitate an imaging system with deep tissue penetration, sample protection from environmental interference, and ample operational space. Traditional three-photon microscopy is constrained by short-working-distance objectives and falls short. Our long-working-distance high-collection-efficiency three-photon microscopy (LH-3PM) addresses these challenges, achieving a 58% fluorescence collection efficiency at a 20 mm working distance. LH-3PM significantly outperforms existing three-photon systems equipped with the same long working distance objective, enhancing fluorescence collection and dramatically reducing phototoxicity and photobleaching. These improvements facilitate accurate capture of neuronal activity and an enhanced detection of activity spikes, which are vital for comprehensive, long-term imaging. LH-3PM's imaging of epileptic zebrafish not only showed sustained neuron activity over an hour but also highlighted increased neural synchronization and spike numbers, marking a notable shift in neural coding mechanisms. This breakthrough paves the way for new explorations of biological phenomena in small model organisms.
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Affiliation(s)
- Peng Deng
- Department of Neurosurgery, Huashan Hospital, MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, China
| | - Shoupei Liu
- Department of Neurosurgery, Huashan Hospital, MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, China
| | - Yaoguang Zhao
- Department of Neurosurgery, Huashan Hospital, MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, China
| | - Xinxin Zhang
- Institute of Neuroscience, State Key Laboratory of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yufei Kong
- Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Pediatrics, National Children’s Medical Center, Children’s Hospital, Fudan University, Shanghai 200032, China
| | - Linlin Liu
- Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Pediatrics, National Children’s Medical Center, Children’s Hospital, Fudan University, Shanghai 200032, China
| | - Yujie Xiao
- Department of Neurosurgery, Huashan Hospital, MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, China
| | - Shasha Yang
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200032, China
| | - Jiahao Hu
- Department of Neurosurgery, Huashan Hospital, MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, China
| | - Jixiong Su
- Department of Neurosurgery, Huashan Hospital, MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, China
| | - Ang Xuan
- Department of Neurosurgery, Huashan Hospital, MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, China
- Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
| | - Jinhong Xu
- Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Pediatrics, National Children’s Medical Center, Children’s Hospital, Fudan University, Shanghai 200032, China
| | - Huijuan Li
- Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Pediatrics, National Children’s Medical Center, Children’s Hospital, Fudan University, Shanghai 200032, China
| | - Xiaoman Su
- State Key Laboratory of Medical Neurobiology, Institutes of Brain Science, MOE Frontiers Center for Brain Science, Department of Neurology of Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jingchuan Wu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200032, China
| | - Yuli Jiang
- Department of Neurosurgery, Huashan Hospital, MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, China
| | - Yu Mu
- Institute of Neuroscience, State Key Laboratory of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Zhicheng Shao
- Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Pediatrics, National Children’s Medical Center, Children’s Hospital, Fudan University, Shanghai 200032, China
| | - Cihang Kong
- Department of Neurosurgery, Huashan Hospital, MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, China
| | - Bo Li
- Department of Neurosurgery, Huashan Hospital, MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, China
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Rathbone E, Fu D. Quantitative Optical Imaging of Oxygen in Brain Vasculature. J Phys Chem B 2024; 128:6975-6989. [PMID: 38991095 DOI: 10.1021/acs.jpcb.4c01277] [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: 07/13/2024]
Abstract
The intimate relationship between neuronal activity and cerebral oxygenation underpins fundamental brain functions like cognition, sensation, and motor control. Optical imaging offers a noninvasive approach to assess brain oxygenation and often serves as an indirect proxy for neuronal activity. However, deciphering neurovascular coupling─the intricate interplay between neuronal activity, blood flow, and oxygen delivery─necessitates independent, high spatial resolution, and high temporal resolution measurements of both microvasculature oxygenation and neuronal activation. This Perspective examines the established optical techniques employed for brain oxygen imaging, specifically functional near-infrared spectroscopy, photoacoustic imaging, optical coherence tomography, and two-photon phosphorescent lifetime microscopy, highlighting their fundamental principles, strengths, and limitations. Several other emerging optical techniques are also introduced. Finally, we discuss key technological challenges and future directions for quantitative optical oxygen imaging, paving the way for a deeper understanding of oxygen metabolism in the brain.
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Affiliation(s)
- Emily Rathbone
- Department of Chemistry, 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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Maung Ye SS, Phng LK. A cell-and-plasma numerical model reveals hemodynamic stress and flow adaptation in zebrafish microvessels after morphological alteration. PLoS Comput Biol 2023; 19:e1011665. [PMID: 38048371 PMCID: PMC10721208 DOI: 10.1371/journal.pcbi.1011665] [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: 05/23/2023] [Revised: 12/14/2023] [Accepted: 11/06/2023] [Indexed: 12/06/2023] Open
Abstract
The development of a functional cardiovascular system ensures a sustainable oxygen, nutrient and hormone delivery system for successful embryonic development and homeostasis in adulthood. While early vessels are formed by biochemical signaling and genetic programming, the onset of blood flow provides mechanical cues that participate in vascular remodeling of the embryonic vascular system. The zebrafish is a prolific animal model for studying the quantitative relationship between blood flow and vascular morphogenesis due to a combination of favorable factors including blood flow visualization in optically transparent larvae. In this study, we have developed a cell-and-plasma blood transport model using computational fluid dynamics (CFD) to understand how red blood cell (RBC) partitioning affect lumen wall shear stress (WSS) and blood pressure in zebrafish trunk blood vascular networks with altered rheology and morphology. By performing live imaging of embryos with reduced hematocrit, we discovered that cardiac output and caudal artery flow rates were maintained. These adaptation trends were recapitulated in our CFD models, which showed reduction in network WSS via viscosity reduction in the caudal artery/vein and via pressure gradient weakening in the intersegmental vessels (ISVs). Embryos with experimentally reduced lumen diameter showed reduced cardiac output and caudal artery flow rate. Factoring in this trend into our CFD models, simulations highlighted that lumen diameter reduction increased vessel WSS but this increase was mitigated by flow reduction due to the adaptive network pressure gradient weakening. Additionally, hypothetical network CFD models with different vessel lumen diameter distribution characteristics indicated the significance of axial variation in lumen diameter and cross-sectional shape for establishing physiological WSS gradients along ISVs. In summary, our work demonstrates how both experiment-driven and hypothetical CFD modeling can be employed for the study of blood flow physiology during vascular remodeling.
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Affiliation(s)
- Swe Soe Maung Ye
- Laboratory for Vascular Morphogenesis, RIKEN Center for Biosystems Dynamics Research (BDR), Kobe, Japan
| | - Li-Kun Phng
- Laboratory for Vascular Morphogenesis, RIKEN Center for Biosystems Dynamics Research (BDR), Kobe, Japan
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