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Pan LC, Hang NLT, Colley MM, Chang J, Hsiao YC, Lu LS, Li BS, Chang CJ, Yang TS. Single Cell Effects of Photobiomodulation on Mitochondrial Membrane Potential and Reactive Oxygen Species Production in Human Adipose Mesenchymal Stem Cells. Cells 2022; 11:cells11060972. [PMID: 35326423 PMCID: PMC8946980 DOI: 10.3390/cells11060972] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 12/10/2022] Open
Abstract
Photobiomodulation (PBM) has recently emerged in cellular therapy as a potent alternative in promoting cell proliferation, migration, and differentiation during tissue regeneration. Herein, a single-cell near-infrared (NIR) laser irradiation system (830 nm) and the image-based approaches were proposed for the investigation of the modulatory effects in mitochondrial membrane potential (ΔΨm), reactive oxygen species (ROS), and vesicle transport in single living human adipose mesenchymal stem cells (hADSCs). The irradiated-hADSCs were then stained with 2′,7′-dichlorodihydrofluorescein diacetate (H2DCFDA) and Rhodamine 123 (Rh123) to represent the ΔΨm and ROS production, respectively, with irradiation in the range of 2.5–10 (J/cm2), where time series of bright-field images were obtained to determine the vesicle transport phenomena. Present results showed that a fluence of 5 J/cm2 of PBM significantly enhanced the ΔΨm, ROS, and vesicle transport phenomena compared to the control group (0 J/cm2) after 30 min PBM treatment. These findings demonstrate the efficacy and use of PBM in regulating ΔΨm, ROS, and vesicle transport, which have potential in cell proliferation, migration, and differentiation in cell-based therapy.
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Affiliation(s)
- Li-Chern Pan
- Graduate Institute of Biomedical Optomechatronics, Taipei Medical University, Taipei 110, Taiwan; (L.-C.P.); (N.-L.-T.H.); (M.M.C.); (Y.-C.H.); (B.-S.L.)
| | - Nguyen-Le-Thanh Hang
- Graduate Institute of Biomedical Optomechatronics, Taipei Medical University, Taipei 110, Taiwan; (L.-C.P.); (N.-L.-T.H.); (M.M.C.); (Y.-C.H.); (B.-S.L.)
| | - Mamadi M.S Colley
- Graduate Institute of Biomedical Optomechatronics, Taipei Medical University, Taipei 110, Taiwan; (L.-C.P.); (N.-L.-T.H.); (M.M.C.); (Y.-C.H.); (B.-S.L.)
| | - Jungshan Chang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 110, Taiwan;
| | - Yu-Cheng Hsiao
- Graduate Institute of Biomedical Optomechatronics, Taipei Medical University, Taipei 110, Taiwan; (L.-C.P.); (N.-L.-T.H.); (M.M.C.); (Y.-C.H.); (B.-S.L.)
| | - Long-Sheng Lu
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei 110, Taiwan;
- International Ph.D. Program in Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei Medical University, Taipei 110, Taiwan
- Department of Medical Research, Taipei Medical University Hospital, Taipei 110, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 110, Taiwan
- Center for Cell Therapy, Taipei Medical University Hospital, Taipei Medical University, Taipei 110, Taiwan
| | - Bing-Sian Li
- Graduate Institute of Biomedical Optomechatronics, Taipei Medical University, Taipei 110, Taiwan; (L.-C.P.); (N.-L.-T.H.); (M.M.C.); (Y.-C.H.); (B.-S.L.)
| | - Cheng-Jen Chang
- Graduate Institute of Biomedical Optomechatronics, Taipei Medical University, Taipei 110, Taiwan; (L.-C.P.); (N.-L.-T.H.); (M.M.C.); (Y.-C.H.); (B.-S.L.)
- Department of Plastic Surgery, Taipei Medical University Hospital, Taipei 110, Taiwan
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
- Correspondence: (C.-J.C.); (T.-S.Y.); Tel.: +886-227-372-181 (ext. 3381) (C.-J.C.); +886-227-361-661 (ext. 5206) (T.-S.Y.)
| | - Tzu-Sen Yang
- Graduate Institute of Biomedical Optomechatronics, Taipei Medical University, Taipei 110, Taiwan; (L.-C.P.); (N.-L.-T.H.); (M.M.C.); (Y.-C.H.); (B.-S.L.)
- International Ph.D. Program in Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan
- School of Dental Technology, Taipei Medical University, Taipei 110, Taiwan
- Research Center of Biomedical Device, Taipei Medical University, Taipei 110, Taiwan
- Correspondence: (C.-J.C.); (T.-S.Y.); Tel.: +886-227-372-181 (ext. 3381) (C.-J.C.); +886-227-361-661 (ext. 5206) (T.-S.Y.)
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Astafiev AA, Shakhov AM, Osychenko AA, Syrchina MS, Karmenyan AV, Tochilo UA, Nadtochenko VA. Probing Intracellular Dynamics Using Fluorescent Carbon Dots Produced by Femtosecond Laser In Situ. ACS OMEGA 2020; 5:12527-12538. [PMID: 32548437 PMCID: PMC7271373 DOI: 10.1021/acsomega.0c01535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 05/11/2020] [Indexed: 05/12/2023]
Abstract
Fluorescent particle tracking is a powerful technique for studying intracellular transport and microrheological properties within living cells, which in most cases employs exogenous fluorescent tracer particles delivered into cells or fluorescent staining of cell organelles. Herein, we propose an alternative strategy, which is based on the generation of fluorescent species in situ with ultrashort laser pulses. Using mouse germinal vesicle oocytes as a model object, we demonstrate that femtosecond laser irradiation produces compact dense areas in the intracellular material containing fluorescent carbon dots synthesized from biological molecules. These dots have tunable persistent and excitation-dependent emission, which is highly advantageous for fluorescent imaging. We further show that tight focusing and tuning of irradiation parameters allow precise control of the location and size of fluorescently labeled areas and minimization of damage inflicted to cells. Pieces of the intracellular material down to the submicrometer size can be labeled with laser-produced fluorescent dots in real time and then employed as probes for detecting intracellular motion activity via fluorescent tracking. Analyzing their diffusion in the oocyte cytoplasm, we arrive to realistic characteristics of active forces generated within the cell and frequency-dependent shear modulus of the cytoplasm. We also quantitatively characterize the level of metabolic activity and density of the cytoskeleton meshwork. Our findings establish a new technique for probing intracellular mechanical properties and also promise applications in tracking individual cells in population or studies of spatiotemporal cell organization.
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Affiliation(s)
- Artyom A. Astafiev
- Semenov
Institute of Chemical Physics, Federal Research
Center of Chemical Physics of RAS, Kosygina Street 4, Moscow 119991, Russian Federation
| | - Aleksander M. Shakhov
- Semenov
Institute of Chemical Physics, Federal Research
Center of Chemical Physics of RAS, Kosygina Street 4, Moscow 119991, Russian Federation
| | - Alina A. Osychenko
- Semenov
Institute of Chemical Physics, Federal Research
Center of Chemical Physics of RAS, Kosygina Street 4, Moscow 119991, Russian Federation
| | - Maria S. Syrchina
- Semenov
Institute of Chemical Physics, Federal Research
Center of Chemical Physics of RAS, Kosygina Street 4, Moscow 119991, Russian Federation
| | - Artashes V. Karmenyan
- National
Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien 97401, Taiwan, ROC
| | - Ulyana A. Tochilo
- Semenov
Institute of Chemical Physics, Federal Research
Center of Chemical Physics of RAS, Kosygina Street 4, Moscow 119991, Russian Federation
| | - Victor A. Nadtochenko
- Semenov
Institute of Chemical Physics, Federal Research
Center of Chemical Physics of RAS, Kosygina Street 4, Moscow 119991, Russian Federation
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Holmes WR. Subdiffusive Dynamics Lead to Depleted Particle Densities near Cellular Borders. Biophys J 2019; 116:1538-1546. [PMID: 30954212 DOI: 10.1016/j.bpj.2019.02.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 02/07/2019] [Accepted: 02/08/2019] [Indexed: 01/17/2023] Open
Abstract
It has long been known that the complex cellular environment leads to anomalous motion of intracellular particles. At a gross level, this is characterized by mean-squared displacements that deviate from the standard linear profile. Statistical analysis of particle trajectories has helped further elucidate how different characteristics of the cellular environment can introduce different types of anomalousness. A significant majority of this literature has, however, focused on characterizing the properties of trajectories that do not interact with cell borders (e.g., cell membrane or nucleus). Numerous biological processes ranging from protein activation to exocytosis, however, require particles to be near a membrane. This study investigates the consequences of a canonical type of subdiffusive motion, fractional Brownian motion, and its physical analog, generalized Langevin equation dynamics, on the spatial localization of particles near reflecting boundaries. Results show that this type of subdiffusive motion leads to the formation of significant zones of depleted particle density near boundaries and that this effect is independent of the specific model details encoding those dynamics. Rather, these depletion layers are a natural and robust consequence of the anticorrelated nature of motion increments that is at the core of fractional Brownian motion (or alternatively generalized Langevin equation) dynamics. If such depletion zones are present, it would be of profound importance given the wide array of signaling and transport processes that occur near membranes. If not, that would suggest our understanding of this type of anomalous motion may be flawed. Either way, this result points to the need to further investigate the consequences of anomalous particle motions near cell borders from both theoretical and experimental perspectives.
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Affiliation(s)
- William R Holmes
- Department of Pysics and Astronomy, Vanderbilt University, Nashville, Tennessee; Department of Mathematics, Vanderbilt University, Nashville, Tennessee; Quantitative Systems Biology Center, Vanderbilt University, Nashville, Tennessee.
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