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Gasser E, Su E, Vaidžiulytė K, Abbade N, Cognart H, Manneville JB, Viovy JL, Piel M, Pierga JY, Terao K, Villard C. Deformation under flow and morphological recovery of cancer cells. LAB ON A CHIP 2024; 24:3930-3944. [PMID: 38993177 PMCID: PMC11302772 DOI: 10.1039/d4lc00246f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 06/30/2024] [Indexed: 07/13/2024]
Abstract
The metastatic cascade includes a blood circulation step for cells detached from the primary tumor. This stage involves significant shear stress as well as large and fast deformation as the cells circulate through the microvasculature. These mechanical stimuli are well reproduced in microfluidic devices. However, the recovery dynamics after deformation is also pivotal to understand how a cell can pass through the multiple capillary constrictions encountered during a single hemodynamic cycle. The microfluidic system developed in this work allows single cell recovery to be studied under flow-free conditions following pressure-actuated cell deformation inside constricted microchannels. We used three breast cancer cell lines - namely MCF-7, SK-BR3 and MDA-MB231 - as cellular models representative of different cancer phenotypes. Changing the size of the constriction allows exploration of moderate to strong deformation regimes, the latter being associated with the formation of plasma membrane blebs. In the regime of moderate deformation, all cell types display a fast elastic recovery behavior followed by a slower viscoelastic regime, well described by a double exponential decay. Among the three cell types, cells of the mesenchymal phenotype, i.e. the MDA-MB231 cells, are softer and the most fluid-like, in agreement with previous studies. Our main finding here is that the fast elastic recovery regime revealed by our novel microfluidic system is under the control of cell contractility ensured by the integrity of the cell cortex. Our results suggest that the cell cortex plays a major role in the transit of circulating tumor cells by allowing their fast morphological recovery after deformation in blood capillaries.
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Affiliation(s)
- Emile Gasser
- Institut Curie and Institut Pierre Gilles de Gennes, Physique des Cellules et Cancer, CNRS UMR168, Université PSL, F-75005 Paris, France.
- Laboratoire Interdisciplinaire des Energies de Demain, CNRS UMR 8236, Université Paris Cité, F-75013, Paris, France.
| | - Emilie Su
- Laboratoire Interdisciplinaire des Energies de Demain, CNRS UMR 8236, Université Paris Cité, F-75013, Paris, France.
- Laboratoire Matière et Systèmes Complexes (MSC), CNRS UMR 7057, Université Paris Cité, 10 Rue Alice Domon et Léonie Duquet, F-75013 Paris, France
| | - Kotryna Vaidžiulytė
- Institut Curie and Institut Pierre Gilles de Gennes, CNRS UMR144, Université PSL, F-75005 Paris, France
| | - Nassiba Abbade
- Institut Curie and Institut Pierre Gilles de Gennes, Physique des Cellules et Cancer, CNRS UMR168, Université PSL, F-75005 Paris, France.
- Institut Curie and Institut Pierre Gilles de Gennes, CNRS UMR144, Université PSL, F-75005 Paris, France
| | - Hamizah Cognart
- Institut Curie and Institut Pierre Gilles de Gennes, Physique des Cellules et Cancer, CNRS UMR168, Université PSL, F-75005 Paris, France.
| | - Jean-Baptiste Manneville
- Laboratoire Matière et Systèmes Complexes (MSC), CNRS UMR 7057, Université Paris Cité, 10 Rue Alice Domon et Léonie Duquet, F-75013 Paris, France
| | - Jean-Louis Viovy
- Institut Curie and Institut Pierre Gilles de Gennes, Physique des Cellules et Cancer, CNRS UMR168, Université PSL, F-75005 Paris, France.
| | - Matthieu Piel
- Institut Curie and Institut Pierre Gilles de Gennes, CNRS UMR144, Université PSL, F-75005 Paris, France
| | - Jean-Yves Pierga
- Département d'Oncologie Médicale de l'Institut Curie et Université Paris Cité, France
| | - Kyohei Terao
- Nano-Micro Structure Device Integrated Research Center, Kagawa University, 2217-20 Hayashi-cho, Takamatsu 761-0396, Japan.
| | - Catherine Villard
- Laboratoire Interdisciplinaire des Energies de Demain, CNRS UMR 8236, Université Paris Cité, F-75013, Paris, France.
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On-site processing of single chromosomal DNA molecules using optically driven microtools on a microfluidic workbench. Sci Rep 2021; 11:7961. [PMID: 33846479 PMCID: PMC8042024 DOI: 10.1038/s41598-021-87238-3] [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: 12/11/2020] [Accepted: 03/22/2021] [Indexed: 11/08/2022] Open
Abstract
We developed optically driven microtools for processing single biomolecules using a microfluidic workbench composed of a microfluidic platform that functions under an optical microscope. The optically driven microtools have enzymes immobilized on their surfaces, which catalyze chemical reactions for molecular processing in a confined space. Optical manipulation of the microtools enables them to be integrated with a microfluidic device for controlling the position, orientation, shape of the target sample. Here, we describe the immobilization of enzymes on the surface of microtools, the microfluidics workbench, including its microtool storage and sample positioning functions, and the use of this system for on-site cutting of single chromosomal DNA molecules. We fabricated microtools by UV lithography with SU-8 and selected ozone treatments for immobilizing enzymes. The microfluidic workbench has tool-stock chambers for tool storage and micropillars to trap and extend single chromosomal DNA molecules. The DNA cutting enzymes DNaseI and DNaseII were immobilized on microtools that were manipulated using optical tweezers. The DNaseI tool shows reliable cutting for on-site processing. This pinpoint processing provides an approach for analyzing chromosomal DNA at the single-molecule level. The flexibility of the microtool design allows for processing of various samples, including biomolecules and single cells.
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Affiliation(s)
- Michael G. Roper
- Department of Chemistry and
Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, Florida 32306, United States
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Bâlici Ş, Wankeu-Nya M, Rusu D, Nicula GZ, Rusu M, Florea A, Matei H. Ultrastructural Analysis of In Vivo Hypoglycemiant Effect of Two Polyoxometalates in Rats with Streptozotocin-Induced Diabetes. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2015; 21:1236-1248. [PMID: 26343528 DOI: 10.1017/s1431927615015020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Two polyoxometalates (POMs), synthesized through a self-assembling method, were used in the treatment of streptozotocin (STZ)-induced diabetic rats. One of these nanocompounds [tris(vanadyl)-substituted tungsto-antimonate(III)-anions—POM1] was previously described in the literature, whereas the second [tris-butyltin-21-tungsto-9-antimonate(III)-anions—POM2], was prepared by us based on our original formula. In rats with STZ-induced diabetes treated with POMs (up to a cumulative dose of 4 mg/kg bodyweight at the end of the treatments), statistically significant reduced levels of blood glucose were measured after 3 weeks, as compared with the diabetic control groups (DCGs). Ultrastructural analysis of pancreatic β-cells (including the mean diameter of secretory vesicles and of their insulin granules) in the treated diabetic rats proved the POMs contribute to limitation of cellular degeneration triggered by STZ, as well as to the presence of increased amounts of insulin-containing vesicles as compared with the DCG. The two POMs also showed hepatoprotective properties when ultrastructural aspects of hepatocytes in the experimental groups of rats were studied. Based on our in vivo studies, we concluded that the two POMs tested achieved hypoglycemiant effects by preventing STZ-triggered apoptosis of pancreatic β-cells and stimulation of insulin synthesis.
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Affiliation(s)
- Ştefana Bâlici
- 1Department of Cell and Molecular Biology, Faculty of Medicine,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
| | - Modeste Wankeu-Nya
- 1Department of Cell and Molecular Biology, Faculty of Medicine,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
| | - Dan Rusu
- 4Department of Physical-Chemistry, Faculty of Pharmacy,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
| | - Gheorghe Z Nicula
- 1Department of Cell and Molecular Biology, Faculty of Medicine,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
| | - Mariana Rusu
- 2Department of Inorganic Chemistry, Faculty of Chemistry and Chemical Engineering,"Babeş-Bolyai" University,11 Arany Janos St.,400028 Cluj-Napoca,România
| | - Adrian Florea
- 1Department of Cell and Molecular Biology, Faculty of Medicine,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
| | - Horea Matei
- 1Department of Cell and Molecular Biology, Faculty of Medicine,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
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