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Pelicci S, Furia L, Pelicci PG, Faretta M. From Cell Populations to Molecular Complexes: Multiplexed Multimodal Microscopy to Explore p53-53BP1 Molecular Interaction. Int J Mol Sci 2024; 25:4672. [PMID: 38731890 PMCID: PMC11083188 DOI: 10.3390/ijms25094672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Surpassing the diffraction barrier revolutionized modern fluorescence microscopy. However, intrinsic limitations in statistical sampling, the number of simultaneously analyzable channels, hardware requirements, and sample preparation procedures still represent an obstacle to its widespread diffusion in applicative biomedical research. Here, we present a novel pipeline based on automated multimodal microscopy and super-resolution techniques employing easily available materials and instruments and completed with open-source image-analysis software developed in our laboratory. The results show the potential impact of single-molecule localization microscopy (SMLM) on the study of biomolecules' interactions and the localization of macromolecular complexes. As a demonstrative application, we explored the basis of p53-53BP1 interactions, showing the formation of a putative macromolecular complex between the two proteins and the basal transcription machinery in situ, thus providing visual proof of the direct role of 53BP1 in sustaining p53 transactivation function. Moreover, high-content SMLM provided evidence of the presence of a 53BP1 complex on the cell cytoskeleton and in the mitochondrial space, thus suggesting the existence of novel alternative 53BP1 functions to support p53 activity.
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Affiliation(s)
- Simone Pelicci
- Department of Experimental Oncology, European Institute of Oncology IRCCS, 20139 Milan, Italy; (S.P.); (L.F.); (P.G.P.)
| | - Laura Furia
- Department of Experimental Oncology, European Institute of Oncology IRCCS, 20139 Milan, Italy; (S.P.); (L.F.); (P.G.P.)
| | - Pier Giuseppe Pelicci
- Department of Experimental Oncology, European Institute of Oncology IRCCS, 20139 Milan, Italy; (S.P.); (L.F.); (P.G.P.)
- Department of Oncology and Hemato-Oncology, University of Milan, 20122 Milan, Italy
| | - Mario Faretta
- Department of Experimental Oncology, European Institute of Oncology IRCCS, 20139 Milan, Italy; (S.P.); (L.F.); (P.G.P.)
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Sheng M, Zhao Y, Wu Z, Zhao J, Lui H, Kalia S, Zeng H. Single source CARS-based multimodal microscopy system for biological tissue imaging [Invited]. BIOMEDICAL OPTICS EXPRESS 2024; 15:131-141. [PMID: 38223172 PMCID: PMC10783911 DOI: 10.1364/boe.504978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/10/2023] [Accepted: 11/19/2023] [Indexed: 01/16/2024]
Abstract
A coherent anti-Stokes Raman scattering (CARS)-based multimodality microscopy system was developed using a single Ti:sapphire femtosecond laser source for biological imaging. It provides three complementary and co-registered imaging modalities: CARS, MPM (multiphoton microscopy), and RCM (reflectance confocal microscopy). The imaging speed is about 1 frame-per-second (fps) with a digital resolution of 1024 × 1024 pixels. This microscopy system can provide clear 2-dimensional and 3-dimensional images of ex-vivo biological tissue samples. Its spectral selection initiates vibrational excitation in lipid cells (approximately 2850 cm-1) using two filters on the pump and Stokes beam paths. The excitation can be tuned over a wide spectral range with adjustable spectral filters. The imaging capability of this CARS-based multimodal microscopy system was demonstrated using porcine fat, murine skin, and murine liver tissue samples.
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Affiliation(s)
- Mingyu Sheng
- Imaging Unit - Integrative Oncology Department, BC Cancer Research Institute, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
| | - Yuan Zhao
- Imaging Unit - Integrative Oncology Department, BC Cancer Research Institute, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
| | - Zhenguo Wu
- Imaging Unit - Integrative Oncology Department, BC Cancer Research Institute, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, Canada
| | - Jianhua Zhao
- Imaging Unit - Integrative Oncology Department, BC Cancer Research Institute, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, Canada
| | - Harvey Lui
- Imaging Unit - Integrative Oncology Department, BC Cancer Research Institute, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, Canada
| | - Sunil Kalia
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, Canada
- Department of Cancer Control Research, BC Cancer Research Institute, Vancouver, Canada
- BC Children’s Hospital Research Institute, Vancouver, Canada
- Centre for Clinical Epidemiology and Evaluation, Vancouver Coastal Health Research Institute, Vancouver, Canada
| | - Haishan Zeng
- Imaging Unit - Integrative Oncology Department, BC Cancer Research Institute, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, Canada
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