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Poli A, Pennacchio FA, Ghisleni A, di Gennaro M, Lecacheur M, Nastały P, Crestani M, Pramotton FM, Iannelli F, Beznusenko G, Mironov AA, Panzetta V, Fusco S, Sheth B, Poulikakos D, Ferrari A, Gauthier N, Netti PA, Divecha N, Maiuri P. PIP4K2B is mechanoresponsive and controls heterochromatin-driven nuclear softening through UHRF1. Nat Commun 2023; 14:1432. [PMID: 36918565 PMCID: PMC10015053 DOI: 10.1038/s41467-023-37064-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 02/23/2023] [Indexed: 03/16/2023] Open
Abstract
Phosphatidylinositol-5-phosphate (PtdIns5P)-4-kinases (PIP4Ks) are stress-regulated phosphoinositide kinases able to phosphorylate PtdIns5P to PtdIns(4,5)P2. In cancer patients their expression is typically associated with bad prognosis. Among the three PIP4K isoforms expressed in mammalian cells, PIP4K2B is the one with more prominent nuclear localisation. Here, we unveil the role of PIP4K2B as a mechanoresponsive enzyme. PIP4K2B protein level strongly decreases in cells growing on soft substrates. Its direct silencing or pharmacological inhibition, mimicking cell response to softness, triggers a concomitant reduction of the epigenetic regulator UHRF1 and induces changes in nuclear polarity, nuclear envelope tension and chromatin compaction. This substantial rewiring of the nucleus mechanical state drives YAP cytoplasmic retention and impairment of its activity as transcriptional regulator, finally leading to defects in cell spreading and motility. Since YAP signalling is essential for initiation and growth of human malignancies, our data suggest that potential therapeutic approaches targeting PIP4K2B could be beneficial in the control of the altered mechanical properties of cancer cells.
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Affiliation(s)
- Alessandro Poli
- IFOM ETS - The AIRC Institute of Molecular Oncology, Milan, Italy.
| | | | - Andrea Ghisleni
- IFOM ETS - The AIRC Institute of Molecular Oncology, Milan, Italy
| | | | | | - Paulina Nastały
- Laboratory of Translational Oncology, Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdańsk, Gdansk, Poland
| | - Michele Crestani
- IFOM ETS - The AIRC Institute of Molecular Oncology, Milan, Italy
| | - Francesca M Pramotton
- EMPA-Materials Science and Technology, Dubenforf, Switzerland
- Institute for Mechanical Systems, ETH, Zurich, Switzerland
| | - Fabio Iannelli
- IFOM ETS - The AIRC Institute of Molecular Oncology, Milan, Italy
| | | | | | - Valeria Panzetta
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Naples, Italy
- Centro di Ricerca Interdipartimentale sui Biomateriali CRIB, University of Naples Federico II, Naples, Italy
- Istituto Italiano di Tecnologia, IIT@CRIB, Naples, Italy
| | - Sabato Fusco
- Department of Medicine and Health Sciences "V. Tiberio", University of Molise, Campobasso, Italy
| | - Bhavwanti Sheth
- Inositide Laboratory, School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, United Kingdom
| | | | - Aldo Ferrari
- Institute for Mechanical Systems, ETH, Zurich, Switzerland
| | - Nils Gauthier
- IFOM ETS - The AIRC Institute of Molecular Oncology, Milan, Italy
| | - Paolo A Netti
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Naples, Italy
- Centro di Ricerca Interdipartimentale sui Biomateriali CRIB, University of Naples Federico II, Naples, Italy
- Istituto Italiano di Tecnologia, IIT@CRIB, Naples, Italy
| | - Nullin Divecha
- Inositide Laboratory, School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, United Kingdom
| | - Paolo Maiuri
- IFOM ETS - The AIRC Institute of Molecular Oncology, Milan, Italy.
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples, Italy.
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Fu Z, Li M, Li Y, Zhang Z, Wang D, Wang C, Li J. Preparation of Agarose Fluorescent Hydrogel Inserted by POSS and Its Application for the Identification and Adsorption of Fe 3. Gels 2021; 7:173. [PMID: 34698197 PMCID: PMC8544435 DOI: 10.3390/gels7040173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/14/2021] [Accepted: 10/14/2021] [Indexed: 12/23/2022] Open
Abstract
After entering in water, Fe3+ is enriched in the human body and along the food chain, causing chronic poisoning and irreversible harm to human health. In order to solve this problem, we synthesized citric acid POSS (CAP) from aminopropyl POSS (OAP) and citric acid. Then, we synthesized fluorescent hydrogels (CAP-agarose hydrogel, CAHG) with CAP and agarose. The luminescence mechanism of CAP was investigated by theoretical calculation. CAP plays a dual role in composite hydrogels: one is to give the gels good fluorescence properties and detect Fe3+; the second is that the surface of CAP has a large content of carbonyl and amide groups, so it can coordinate with Fe3+ to enhance the adsorption properties of hydrogels. The experimental results show that the lowest Fe3+ concentration that CAHG can detect is 5 μmol/L, and the adsorption capacity for Fe3+ is about 26.75 mg/g. In a certain range, the fluorescence intensity of CAHG had an exponential relation with Fe3+ concentration, which is expected to be applied to fluorescence sensors. Even at a lower concentration, CAHG can effectively remove Fe3+ from the solution. The prepared fluorescent hydrogel has great potential in the field of fluorescent probes, fluorescent sensors, and ion adsorption. Besides, CAHG can be used as photothermal material after adsorbing Fe3+, allowing for material recycling and reducing material waste.
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Affiliation(s)
- Zhengquan Fu
- Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China; (Z.F.); (M.L.); (Y.L.); (Z.Z.); (C.W.); (J.L.)
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education), Northeast Forestry University, Harbin 150040, China
- Collage of Material Science & Engineering, Northeast Forestry University, Harbin 150040, China
| | - Ming Li
- Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China; (Z.F.); (M.L.); (Y.L.); (Z.Z.); (C.W.); (J.L.)
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education), Northeast Forestry University, Harbin 150040, China
- Collage of Material Science & Engineering, Northeast Forestry University, Harbin 150040, China
| | - Yuanhang Li
- Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China; (Z.F.); (M.L.); (Y.L.); (Z.Z.); (C.W.); (J.L.)
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education), Northeast Forestry University, Harbin 150040, China
- Collage of Material Science & Engineering, Northeast Forestry University, Harbin 150040, China
| | - Zhiyuan Zhang
- Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China; (Z.F.); (M.L.); (Y.L.); (Z.Z.); (C.W.); (J.L.)
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education), Northeast Forestry University, Harbin 150040, China
- Collage of Material Science & Engineering, Northeast Forestry University, Harbin 150040, China
| | - Di Wang
- Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China; (Z.F.); (M.L.); (Y.L.); (Z.Z.); (C.W.); (J.L.)
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education), Northeast Forestry University, Harbin 150040, China
- Collage of Material Science & Engineering, Northeast Forestry University, Harbin 150040, China
| | - Chengyu Wang
- Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China; (Z.F.); (M.L.); (Y.L.); (Z.Z.); (C.W.); (J.L.)
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education), Northeast Forestry University, Harbin 150040, China
- Collage of Material Science & Engineering, Northeast Forestry University, Harbin 150040, China
| | - Jian Li
- Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China; (Z.F.); (M.L.); (Y.L.); (Z.Z.); (C.W.); (J.L.)
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education), Northeast Forestry University, Harbin 150040, China
- Collage of Material Science & Engineering, Northeast Forestry University, Harbin 150040, China
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Pu Q, Ma Q, Li J, Li G, Li XY. Soft substrate stiffness modifies corneal epithelial stem cell phenotype through hippo-YAP/notch pathway crosstalk. Med Hypotheses 2021; 156:110687. [PMID: 34627046 DOI: 10.1016/j.mehy.2021.110687] [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: 06/03/2021] [Revised: 08/23/2021] [Accepted: 09/17/2021] [Indexed: 11/16/2022]
Abstract
Corneal disease remains to be one of the leading causes of blindness in the world and limbal stem cell (LSC) therapy is a promising therapy for LSC deficiency, which is associated with the diseased corneal epithelium repair. Soft substrate could effectively promote the stemness maintenance of LSC and thus modification of cell culture substrate would help in the potential LSC deficiency therapy. Both Hippo-Yes-associated protein (YAP) and Notch pathway have been reported to affect the LSC function, however, the detailed mechanisms remain unclear. Instead of some soft but biologically toxic substrates, we present a hypothesis on the application of soft substrate generated by HA/PTX3, an FDA approved nontoxic drug, on the LSC culture in this current study. Soft substrate could help in the stemness maintenance and thus promote the LSC deficiency treatment. In more detailed mechanism detection, we hypothesize that soft substrate would block the activation of Hippo-YAP pathway and thus decrease the activity of Notch pathway. This proposed hypothesis should be evaluated by both a series of in-vitro experiments based on soft and stiff substrates and in-vivo treatment with LSC cultured in different conditions. Advanced experiments on related cellular behaviors and detailed molecular mechanisms would provide us more knowledge on the molecular mechanism detection as well as cell transplantation therapy.
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Affiliation(s)
- Qi Pu
- Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Qian Ma
- Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Jing Li
- Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Guigang Li
- Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Xin-Yu Li
- Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China.
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Pérez-Calixto D, Amat-Shapiro S, Zamarrón-Hernández D, Vázquez-Victorio G, Puech PH, Hautefeuille M. Determination by Relaxation Tests of the Mechanical Properties of Soft Polyacrylamide Gels Made for Mechanobiology Studies. Polymers (Basel) 2021; 13:629. [PMID: 33672475 PMCID: PMC7923444 DOI: 10.3390/polym13040629] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/08/2021] [Accepted: 02/11/2021] [Indexed: 02/04/2023] Open
Abstract
Following the general aim of recapitulating the native mechanical properties of tissues and organs in vitro, the field of materials science and engineering has benefited from recent progress in developing compliant substrates with physical and chemical properties similar to those of biological materials. In particular, in the field of mechanobiology, soft hydrogels can now reproduce the precise range of stiffnesses of healthy and pathological tissues to study the mechanisms behind cell responses to mechanics. However, it was shown that biological tissues are not only elastic but also relax at different timescales. Cells can, indeed, perceive this dissipation and actually need it because it is a critical signal integrated with other signals to define adhesion, spreading and even more complicated functions. The mechanical characterization of hydrogels used in mechanobiology is, however, commonly limited to the elastic stiffness (Young's modulus) and this value is known to depend greatly on the measurement conditions that are rarely reported in great detail. Here, we report that a simple relaxation test performed under well-defined conditions can provide all the necessary information for characterizing soft materials mechanically, by fitting the dissipation behavior with a generalized Maxwell model (GMM). The simple method was validated using soft polyacrylamide hydrogels and proved to be very useful to readily unveil precise mechanical properties of gels that cells can sense and offer a set of characteristic values that can be compared with what is typically reported from microindentation tests.
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Affiliation(s)
- Daniel Pérez-Calixto
- Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (D.P.-C.); (S.A.-S.); (D.Z.-H.); (G.V.-V.)
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
- Posgrado en Ciencia e Ingeniería de Materiales, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Samuel Amat-Shapiro
- Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (D.P.-C.); (S.A.-S.); (D.Z.-H.); (G.V.-V.)
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Diego Zamarrón-Hernández
- Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (D.P.-C.); (S.A.-S.); (D.Z.-H.); (G.V.-V.)
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Genaro Vázquez-Victorio
- Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (D.P.-C.); (S.A.-S.); (D.Z.-H.); (G.V.-V.)
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Pierre-Henri Puech
- Adhesion and Inflammation Lab (LAI), Aix Marseille University, LAI UM 61, Inserm, UMR_S 1067, CNRS, UMR 7333, F-13288 Marseille, France;
| | - Mathieu Hautefeuille
- Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (D.P.-C.); (S.A.-S.); (D.Z.-H.); (G.V.-V.)
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
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