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Abruzzo A, Pucci R, Abruzzo PM, Canaider S, Parolin C, Vitali B, Valle F, Brucale M, Cerchiara T, Luppi B, Bigucci F. Azithromycin-loaded liposomes and niosomes for the treatment of skin infections: Influence of excipients and preparative methods on the functional properties. Eur J Pharm Biopharm 2024; 197:114233. [PMID: 38387849 DOI: 10.1016/j.ejpb.2024.114233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/08/2024] [Accepted: 02/19/2024] [Indexed: 02/24/2024]
Abstract
The aim of this study was to develop azithromycin (AZT)-loaded liposomes (LP) and niosomes (NS) useful for the treatment of bacterial skin infections and acne. LP based on phosphatidylcholine from egg yolk (EPC) or from soybean lecithin (SPC), and NS composed of sorbitan monopalmitate (Span 40) or sorbitan monostearate (Span 60) were prepared through the thin film hydration (TFH) and the ethanol injection (EI) methods. The formulations were subsequently characterized for their physico-chemical and functional properties. Vesicles prepared through TFH showed higher average sizes than the corresponding formulations obtained by EI. All the vesicles presented adequate encapsulation efficiency and a negative ζ potential, which assured good stability during the storage period (except for LP-SPC). Formulations prepared with TFH showed a more prolonged AZT release than those prepared through EI, due to their lower surface area and multilamellar structure, as confirmed by atomic force microscopy nanomechanical characterization. Finally, among all the formulations, NS-Span 40-TFH and LP-EPC-TFH allowed the highest drug accumulation in the skin, retained the antimicrobial activity and did not alter fibroblast metabolism and viability. Overall, they could ensure to minimize the dosing and the administration frequency, thus representing promising candidates for the treatment of bacterial skin infections and acne.
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Affiliation(s)
- A Abruzzo
- Department of Pharmacy and Biotechnology, Via San Donato 19/2, University of Bologna, 40127 Bologna, Italy.
| | - R Pucci
- Department of Pharmacy and Biotechnology, Via San Donato 19/2, University of Bologna, 40127 Bologna, Italy.
| | - P M Abruzzo
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Via Massarenti 9, 40138 Bologna, Italy.
| | - S Canaider
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Via Massarenti 9, 40138 Bologna, Italy.
| | - C Parolin
- Department of Pharmacy and Biotechnology, Via San Donato 19/2, University of Bologna, 40127 Bologna, Italy.
| | - B Vitali
- Department of Pharmacy and Biotechnology, Via San Donato 19/2, University of Bologna, 40127 Bologna, Italy.
| | - F Valle
- Consiglio Nazionale delle Ricerche (CNR), Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), via Gobetti 101, 40129 Bologna, Italy.
| | - M Brucale
- Consiglio Nazionale delle Ricerche (CNR), Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), via Gobetti 101, 40129 Bologna, Italy.
| | - T Cerchiara
- Department of Pharmacy and Biotechnology, Via San Donato 19/2, University of Bologna, 40127 Bologna, Italy.
| | - B Luppi
- Department of Pharmacy and Biotechnology, Via San Donato 19/2, University of Bologna, 40127 Bologna, Italy.
| | - F Bigucci
- Department of Pharmacy and Biotechnology, Via San Donato 19/2, University of Bologna, 40127 Bologna, Italy.
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2
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Welsh JA, Goberdhan DCI, O'Driscoll L, Buzas EI, Blenkiron C, Bussolati B, Cai H, Di Vizio D, Driedonks TAP, Erdbrügger U, Falcon‐Perez JM, Fu Q, Hill AF, Lenassi M, Lim SK, Mahoney MG, Mohanty S, Möller A, Nieuwland R, Ochiya T, Sahoo S, Torrecilhas AC, Zheng L, Zijlstra A, Abuelreich S, Bagabas R, Bergese P, Bridges EM, Brucale M, Burger D, Carney RP, Cocucci E, Colombo F, Crescitelli R, Hanser E, Harris AL, Haughey NJ, Hendrix A, Ivanov AR, Jovanovic‐Talisman T, Kruh‐Garcia NA, Ku'ulei‐Lyn Faustino V, Kyburz D, Lässer C, Lennon KM, Lötvall J, Maddox AL, Martens‐Uzunova ES, Mizenko RR, Newman LA, Ridolfi A, Rohde E, Rojalin T, Rowland A, Saftics A, Sandau US, Saugstad JA, Shekari F, Swift S, Ter‐Ovanesyan D, Tosar JP, Useckaite Z, Valle F, Varga Z, van der Pol E, van Herwijnen MJC, Wauben MHM, Wehman AM, Williams S, Zendrini A, Zimmerman AJ, MISEV Consortium, Théry C, Witwer KW. Minimal information for studies of extracellular vesicles (MISEV2023): From basic to advanced approaches. J Extracell Vesicles 2024; 13:e12404. [PMID: 38326288 PMCID: PMC10850029 DOI: 10.1002/jev2.12404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 12/15/2023] [Accepted: 12/19/2023] [Indexed: 02/09/2024] Open
Abstract
Extracellular vesicles (EVs), through their complex cargo, can reflect the state of their cell of origin and change the functions and phenotypes of other cells. These features indicate strong biomarker and therapeutic potential and have generated broad interest, as evidenced by the steady year-on-year increase in the numbers of scientific publications about EVs. Important advances have been made in EV metrology and in understanding and applying EV biology. However, hurdles remain to realising the potential of EVs in domains ranging from basic biology to clinical applications due to challenges in EV nomenclature, separation from non-vesicular extracellular particles, characterisation and functional studies. To address the challenges and opportunities in this rapidly evolving field, the International Society for Extracellular Vesicles (ISEV) updates its 'Minimal Information for Studies of Extracellular Vesicles', which was first published in 2014 and then in 2018 as MISEV2014 and MISEV2018, respectively. The goal of the current document, MISEV2023, is to provide researchers with an updated snapshot of available approaches and their advantages and limitations for production, separation and characterisation of EVs from multiple sources, including cell culture, body fluids and solid tissues. In addition to presenting the latest state of the art in basic principles of EV research, this document also covers advanced techniques and approaches that are currently expanding the boundaries of the field. MISEV2023 also includes new sections on EV release and uptake and a brief discussion of in vivo approaches to study EVs. Compiling feedback from ISEV expert task forces and more than 1000 researchers, this document conveys the current state of EV research to facilitate robust scientific discoveries and move the field forward even more rapidly.
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Affiliation(s)
- Joshua A. Welsh
- Translational Nanobiology Section, Laboratory of PathologyNational Cancer Institute, National Institutes of HealthBethesdaMarylandUSA
| | - Deborah C. I. Goberdhan
- Nuffield Department of Women's and Reproductive HealthUniversity of Oxford, Women's Centre, John Radcliffe HospitalOxfordUK
| | - Lorraine O'Driscoll
- School of Pharmacy and Pharmaceutical SciencesTrinity College DublinDublinIreland
- Trinity Biomedical Sciences InstituteTrinity College DublinDublinIreland
- Trinity St. James's Cancer InstituteTrinity College DublinDublinIreland
| | - Edit I. Buzas
- Department of Genetics, Cell‐ and ImmunobiologySemmelweis UniversityBudapestHungary
- HCEMM‐SU Extracellular Vesicle Research GroupSemmelweis UniversityBudapestHungary
- HUN‐REN‐SU Translational Extracellular Vesicle Research GroupSemmelweis UniversityBudapestHungary
| | - Cherie Blenkiron
- Faculty of Medical and Health SciencesThe University of AucklandAucklandNew Zealand
| | - Benedetta Bussolati
- Department of Molecular Biotechnology and Health SciencesUniversity of TurinTurinItaly
| | | | - Dolores Di Vizio
- Department of Surgery, Division of Cancer Biology and TherapeuticsCedars‐Sinai Medical CenterLos AngelesCaliforniaUSA
| | - Tom A. P. Driedonks
- Department CDL ResearchUniversity Medical Center UtrechtUtrechtThe Netherlands
| | - Uta Erdbrügger
- University of Virginia Health SystemCharlottesvilleVirginiaUSA
| | - Juan M. Falcon‐Perez
- Exosomes Laboratory, Center for Cooperative Research in BiosciencesBasque Research and Technology AllianceDerioSpain
- Metabolomics Platform, Center for Cooperative Research in BiosciencesBasque Research and Technology AllianceDerioSpain
- IKERBASQUE, Basque Foundation for ScienceBilbaoSpain
| | - Qing‐Ling Fu
- Otorhinolaryngology Hospital, The First Affiliated HospitalSun Yat‐sen UniversityGuangzhouChina
- Extracellular Vesicle Research and Clinical Translational CenterThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Andrew F. Hill
- Institute for Health and SportVictoria UniversityMelbourneAustralia
| | - Metka Lenassi
- Faculty of MedicineUniversity of LjubljanaLjubljanaSlovenia
| | - Sai Kiang Lim
- Institute of Molecular and Cell Biology (IMCB)Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- Paracrine Therapeutics Pte. Ltd.SingaporeSingapore
- Department of Surgery, YLL School of MedicineNational University SingaporeSingaporeSingapore
| | - Mỹ G. Mahoney
- Thomas Jefferson UniversityPhiladelphiaPennsylvaniaUSA
| | - Sujata Mohanty
- Stem Cell FacilityAll India Institute of Medical SciencesNew DelhiIndia
| | - Andreas Möller
- Chinese University of Hong KongHong KongHong Kong S.A.R.
- QIMR Berghofer Medical Research InstituteBrisbaneAustralia
| | - Rienk Nieuwland
- Laboratory of Experimental Clinical Chemistry, Amsterdam University Medical Centers, Location AMCUniversity of AmsterdamAmsterdamThe Netherlands
- Amsterdam Vesicle Center, Amsterdam University Medical Centers, Location AMCUniversity of AmsterdamAmsterdamThe Netherlands
| | | | - Susmita Sahoo
- Icahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Ana C. Torrecilhas
- Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Departamento de Ciências Farmacêuticas, Instituto de Ciências Ambientais, Químicas e FarmacêuticasUniversidade Federal de São Paulo (UNIFESP) Campus DiademaDiademaBrazil
| | - Lei Zheng
- Department of Laboratory Medicine, Nanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Andries Zijlstra
- Department of PathologyVanderbilt University Medical CenterNashvilleTennesseeUSA
- GenentechSouth San FranciscoCaliforniaUSA
| | - Sarah Abuelreich
- Department of Molecular Medicine, Beckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Reem Bagabas
- Department of Molecular Medicine, Beckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Paolo Bergese
- Department of Molecular and Translational MedicineUniversity of BresciaBresciaItaly
- Center for Colloid and Surface Science (CSGI)FlorenceItaly
- National Center for Gene Therapy and Drugs based on RNA TechnologyPaduaItaly
| | - Esther M. Bridges
- Weatherall Institute of Molecular MedicineUniversity of OxfordOxfordUK
| | - Marco Brucale
- Consiglio Nazionale delle Ricerche ‐ Istituto per lo Studio dei Materiali NanostrutturatiBolognaItaly
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFlorenceItaly
| | - Dylan Burger
- Kidney Research CentreOttawa Hopsital Research InstituteOttawaCanada
- Department of Cellular and Molecular MedicineUniversity of OttawaOttawaCanada
- School of Pharmaceutical SciencesUniversity of OttawaOttawaCanada
| | - Randy P. Carney
- Department of Biomedical EngineeringUniversity of CaliforniaDavisCaliforniaUSA
| | - Emanuele Cocucci
- Division of Pharmaceutics and Pharmacology, College of PharmacyThe Ohio State UniversityColumbusOhioUSA
- Comprehensive Cancer CenterThe Ohio State UniversityColumbusOhioUSA
| | - Federico Colombo
- Division of Pharmaceutics and Pharmacology, College of PharmacyThe Ohio State UniversityColumbusOhioUSA
| | - Rossella Crescitelli
- Sahlgrenska Center for Cancer Research, Department of Surgery, Institute of Clinical SciencesSahlgrenska Academy, University of GothenburgGothenburgSweden
- Wallenberg Centre for Molecular and Translational Medicine, Institute of Clinical SciencesSahlgrenska Academy, University of GothenburgGothenburgSweden
| | - Edveena Hanser
- Department of BiomedicineUniversity Hospital BaselBaselSwitzerland
- Department of BiomedicineUniversity of BaselBaselSwitzerland
| | | | - Norman J. Haughey
- Departments of Neurology and PsychiatryJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - An Hendrix
- Laboratory of Experimental Cancer Research, Department of Human Structure and RepairGhent UniversityGhentBelgium
- Cancer Research Institute GhentGhentBelgium
| | - Alexander R. Ivanov
- Barnett Institute of Chemical and Biological Analysis, Department of Chemistry and Chemical BiologyNortheastern UniversityBostonMassachusettsUSA
| | - Tijana Jovanovic‐Talisman
- Department of Cancer Biology and Molecular Medicine, Beckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Nicole A. Kruh‐Garcia
- Bio‐pharmaceutical Manufacturing and Academic Resource Center (BioMARC)Infectious Disease Research Center, Colorado State UniversityFort CollinsColoradoUSA
| | - Vroniqa Ku'ulei‐Lyn Faustino
- Department of Molecular Medicine, Beckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Diego Kyburz
- Department of BiomedicineUniversity of BaselBaselSwitzerland
- Department of RheumatologyUniversity Hospital BaselBaselSwitzerland
| | - Cecilia Lässer
- Krefting Research Centre, Department of Internal Medicine and Clinical NutritionInstitute of Medicine at Sahlgrenska Academy, University of GothenburgGothenburgSweden
| | - Kathleen M. Lennon
- Department of Molecular Medicine, Beckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Jan Lötvall
- Krefting Research Centre, Institute of Medicine at Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Adam L. Maddox
- Department of Molecular Medicine, Beckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Elena S. Martens‐Uzunova
- Erasmus MC Cancer InstituteUniversity Medical Center Rotterdam, Department of UrologyRotterdamThe Netherlands
| | - Rachel R. Mizenko
- Department of Biomedical EngineeringUniversity of CaliforniaDavisCaliforniaUSA
| | - Lauren A. Newman
- College of Medicine and Public HealthFlinders UniversityAdelaideAustralia
| | - Andrea Ridolfi
- Department of Physics and Astronomy, and LaserLaB AmsterdamVrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Eva Rohde
- Department of Transfusion Medicine, University HospitalSalzburger Landeskliniken GmbH of Paracelsus Medical UniversitySalzburgAustria
- GMP Unit, Paracelsus Medical UniversitySalzburgAustria
- Transfer Centre for Extracellular Vesicle Theralytic Technologies, EV‐TTSalzburgAustria
| | - Tatu Rojalin
- Department of Biomedical EngineeringUniversity of CaliforniaDavisCaliforniaUSA
- Expansion Therapeutics, Structural Biology and BiophysicsJupiterFloridaUSA
| | - Andrew Rowland
- College of Medicine and Public HealthFlinders UniversityAdelaideAustralia
| | - Andras Saftics
- Department of Molecular Medicine, Beckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Ursula S. Sandau
- Department of Anesthesiology & Perioperative MedicineOregon Health & Science UniversityPortlandOregonUSA
| | - Julie A. Saugstad
- Department of Anesthesiology & Perioperative MedicineOregon Health & Science UniversityPortlandOregonUSA
| | - Faezeh Shekari
- Department of Stem Cells and Developmental Biology, Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECRTehranIran
- Celer DiagnosticsTorontoCanada
| | - Simon Swift
- Waipapa Taumata Rau University of AucklandAucklandNew Zealand
| | - Dmitry Ter‐Ovanesyan
- Wyss Institute for Biologically Inspired EngineeringHarvard UniversityBostonMassachusettsUSA
| | - Juan P. Tosar
- Universidad de la RepúblicaMontevideoUruguay
- Institut Pasteur de MontevideoMontevideoUruguay
| | - Zivile Useckaite
- College of Medicine and Public HealthFlinders UniversityAdelaideAustralia
| | - Francesco Valle
- Consiglio Nazionale delle Ricerche ‐ Istituto per lo Studio dei Materiali NanostrutturatiBolognaItaly
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFlorenceItaly
| | - Zoltan Varga
- Biological Nanochemistry Research GroupInstitute of Materials and Environmental Chemistry, Research Centre for Natural SciencesBudapestHungary
- Department of Biophysics and Radiation BiologySemmelweis UniversityBudapestHungary
| | - Edwin van der Pol
- Amsterdam Vesicle Center, Amsterdam University Medical Centers, Location AMCUniversity of AmsterdamAmsterdamThe Netherlands
- Biomedical Engineering and Physics, Amsterdam UMC, location AMCUniversity of AmsterdamAmsterdamThe Netherlands
- Laboratory of Experimental Clinical Chemistry, Amsterdam UMC, location AMCUniversity of AmsterdamAmsterdamThe Netherlands
| | - Martijn J. C. van Herwijnen
- Department of Biomolecular Health Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Marca H. M. Wauben
- Department of Biomolecular Health Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | | | | | - Andrea Zendrini
- Department of Molecular and Translational MedicineUniversity of BresciaBresciaItaly
- Center for Colloid and Surface Science (CSGI)FlorenceItaly
| | - Alan J. Zimmerman
- Barnett Institute of Chemical and Biological Analysis, Department of Chemistry and Chemical BiologyNortheastern UniversityBostonMassachusettsUSA
| | | | - Clotilde Théry
- Institut Curie, INSERM U932PSL UniversityParisFrance
- CurieCoreTech Extracellular Vesicles, Institut CurieParisFrance
| | - Kenneth W. Witwer
- Department of Molecular and Comparative PathobiologyJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- EV Core Facility “EXCEL”, Institute for Basic Biomedical SciencesJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- The Richman Family Precision Medicine Center of Excellence in Alzheimer's DiseaseJohns Hopkins University School of MedicineBaltimoreMarylandUSA
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3
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Cardellini J, Balestri A, Comparini L, Lonetti B, Brucale M, Valle F, Berti D, Montis C. Controlling plasmonic suprastructures through self-assembly of gold nanoparticles with hybrid copolymer-lipid vesicles. J Colloid Interface Sci 2024; 654:848-858. [PMID: 37898069 DOI: 10.1016/j.jcis.2023.10.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/30/2023]
Abstract
Hybrid lipid membranes incorporating amphiphilic copolymers have gained significant attention due to their potential applications in various fields, including drug delivery and sensing. By combining the properties of copolymers and lipid membranes, such as enhanced chemical tunability and stability, environmental responsiveness, and multidomain nature, novel membrane architectures have been proposed. In this study, we investigated the potentialities of hybrid membranes made of two distinct components: the rigid fully saturated phospholipid 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and the soft copolymer poly(butadiene-b-ethyleneoxide) (PBD-b-PEO). The objective was to explore the interaction of citrate-coated gold nanoparticles (AuNPs) and the hybrid membrane, aiming at constructing AuNPs-hybrid vesicles suprastructures with controlled and adjustable plasmonic properties. A series of experimental techniques were employed to investigate hybrid free-standing and supported membranes. The results revealed that the incorporation of the copolymer into the lipid membrane promotes AuNPs clustering, demonstrating a distinctive aggregative phenomenon of citrate-coated AuNPs on multidomain membranes. Importantly, we show that the size and morphology of AuNPs clusters can be precisely controlled in non-homogeneous membranes, enabling the formation of hybrid suprastructures with controlled patch properties. These results highlight the potential of lipid-copolymer hybrid membranes for designing functional materials with tailored plasmonic properties, with potential applications in nanomedicine and sensing.
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Affiliation(s)
- Jacopo Cardellini
- Department of Chemistry, University of Florence, and CSGI, Florence, Italy
| | - Arianna Balestri
- Department of Chemistry, University of Florence, and CSGI, Florence, Italy
| | - Luca Comparini
- Department of Chemistry, University of Florence, and CSGI, Florence, Italy
| | - Barbara Lonetti
- Laboratoire des IMRCP, Université de Toulouse, CNRS, Toulouse 31062, France
| | | | | | - Debora Berti
- Department of Chemistry, University of Florence, and CSGI, Florence, Italy
| | - Costanza Montis
- Department of Chemistry, University of Florence, and CSGI, Florence, Italy.
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4
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Lozano‐Andrés E, Enciso‐Martinez A, Gijsbers A, Ridolfi A, Van Niel G, Libregts SFWM, Pinheiro C, van Herwijnen MJC, Hendrix A, Brucale M, Valle F, Peters PJ, Otto C, Arkesteijn GJA, Wauben MHM. Physical association of low density lipoprotein particles and extracellular vesicles unveiled by single particle analysis. J Extracell Vesicles 2023; 12:e12376. [PMID: 37942918 PMCID: PMC10634195 DOI: 10.1002/jev2.12376] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 10/04/2023] [Accepted: 10/10/2023] [Indexed: 11/10/2023] Open
Abstract
Extracellular vesicles (EVs) in blood plasma are recognized as potential biomarkers for disease. Although blood plasma is easily obtainable, analysis of EVs at the single particle level is still challenging due to the biological complexity of this body fluid. Besides EVs, plasma contains different types of lipoproteins particles (LPPs), that outnumber EVs by orders of magnitude and which partially overlap in biophysical properties such as size, density and molecular makeup. Consequently, during EV isolation LPPs are often co-isolated. Furthermore, physical EV-LPP complexes have been observed in purified EV preparations. Since co-isolation or association of LPPs can impact EV-based analysis and biomarker profiling, we investigated the presence and formation of EV-LPP complexes in biological samples by using label-free atomic force microscopy, cryo-electron tomography and synchronous Rayleigh and Raman scattering analysis of optically trapped particles and fluorescence-based high sensitivity single particle flow cytometry. Furthermore, we evaluated the impact on flow cytometric analysis in the presence of LPPs using in vitro spike-in experiments of purified tumour cell line-derived EVs in different classes of purified human LPPs. Based on orthogonal single-particle analysis techniques we demonstrate that EV-LPP complexes can form under physiological conditions. Furthermore, we show that in fluorescence-based flow cytometric EV analysis staining of LPPs, as well as EV-LPP associations, can influence quantitative and qualitative EV analysis. Lastly, we demonstrate that the colloidal matrix of the biofluid in which EVs reside impacts their buoyant density, size and/or refractive index (RI), which may have consequences for down-stream EV analysis and EV biomarker profiling.
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Affiliation(s)
- Estefanía Lozano‐Andrés
- Department of Biomolecular Health Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Agustin Enciso‐Martinez
- Department of Cell and Chemical BiologyLeiden University Medical CenterLeidenThe Netherlands
- Medical Cell Biophysics GroupUniversity of TwenteEnschedeThe Netherlands
| | - Abril Gijsbers
- Maastricht Multimodal Molecular Imaging Institute, Division of NanoscopyMaastricht UniversityMaastrichtThe Netherlands
| | - Andrea Ridolfi
- Department of Physics and Astronomy and LaserLaB AmsterdamVrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Guillaume Van Niel
- Institute for Psychiatry and Neuroscience of ParisHopital Saint‐Anne, Université DescartesParisFrance
| | - Sten F. W. M. Libregts
- Department of Biomolecular Health Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Cláudio Pinheiro
- Laboratory of Experimental Cancer ResearchDepartment of Human Structure and Repair Ghent UniversityGhentBelgium
- Cancer Research Institute GhentGhentBelgium
| | - Martijn J. C. van Herwijnen
- Department of Biomolecular Health Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - An Hendrix
- Laboratory of Experimental Cancer ResearchDepartment of Human Structure and Repair Ghent UniversityGhentBelgium
- Cancer Research Institute GhentGhentBelgium
| | - Marco Brucale
- Institute for the Study of Nanostructured Materials (ISMN)Italian National Research Council (CNR)BolognaItaly
| | - Francesco Valle
- Institute for the Study of Nanostructured Materials (ISMN)Italian National Research Council (CNR)BolognaItaly
| | - Peter J. Peters
- Maastricht Multimodal Molecular Imaging Institute, Division of NanoscopyMaastricht UniversityMaastrichtThe Netherlands
| | - Cees Otto
- Medical Cell Biophysics GroupUniversity of TwenteEnschedeThe Netherlands
| | - Ger J. A. Arkesteijn
- Department of Biomolecular Health Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Marca H. M. Wauben
- Department of Biomolecular Health Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
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5
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Ridolfi A, Conti L, Brucale M, Frigerio R, Cardellini J, Musicò A, Romano M, Zendrini A, Polito L, Bergamaschi G, Gori A, Montis C, Panella S, Barile L, Berti D, Radeghieri A, Bergese P, Cretich M, Valle F. Particle profiling of EV-lipoprotein mixtures by AFM nanomechanical imaging. J Extracell Vesicles 2023; 12:e12349. [PMID: 37855042 PMCID: PMC10585431 DOI: 10.1002/jev2.12349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 07/08/2023] [Indexed: 10/20/2023] Open
Abstract
The widely overlapping physicochemical properties of lipoproteins (LPs) and extracellular vesicles (EVs) represents one of the main obstacles for the isolation and characterization of these pervasive biogenic lipid nanoparticles. We herein present the application of an atomic force microscopy (AFM)-based quantitative morphometry assay to the rapid nanomechanical screening of mixed LPs and EVs samples. The method can determine the diameter and the mechanical stiffness of hundreds of individual nanometric objects within few hours. The obtained diameters are in quantitative accord with those measured via cryo-electron microscopy (cryo-EM); the assignment of specific nanomechanical readout to each object enables the simultaneous discrimination of co-isolated EVs and LPs even if they have overlapping size distributions. EVs and all classes of LPs are shown to be characterised by specific combinations of diameter and stiffness, thus making it possible to estimate their relative abundance in EV/LP mixed samples in terms of stoichiometric ratio, surface area and volume. As a side finding, we show how the mechanical behaviour of specific LP classes is correlated to distinctive structural features revealed by cryo-EM. The described approach is label-free, single-step and relatively quick to perform. Importantly, it can be used to analyse samples which prove very challenging to assess with several established techniques due to ensemble-averaging, low sensibility to small particles, or both, thus providing a very useful tool for quickly assessing the purity of EV/LP isolates including plasma- and serum-derived preparations.
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Affiliation(s)
- Andrea Ridolfi
- Consiglio Nazionale delle RicercheIstituto per lo Studio dei Materiali NanostrutturatiBolognaItaly
| | - Laura Conti
- Consiglio Nazionale delle RicercheIstituto per lo Studio dei Materiali NanostrutturatiBolognaItaly
| | - Marco Brucale
- Consiglio Nazionale delle RicercheIstituto per lo Studio dei Materiali NanostrutturatiBolognaItaly
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFirenzeItaly
| | - Roberto Frigerio
- Consiglio Nazionale delle RicercheIstituto di Scienze e Tecnologie Chimiche “Giulio Natta”MilanItaly
- Dipartimento di Medicina Molecolare e TraslazionaleUniversità degli Studi di BresciaBresciaItaly
| | - Jacopo Cardellini
- Dipartimento di Chimica “Ugo Schiff”Università degli Studi di FirenzeFirenzeItaly
| | - Angelo Musicò
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFirenzeItaly
- Consiglio Nazionale delle RicercheIstituto di Scienze e Tecnologie Chimiche “Giulio Natta”MilanItaly
- Dipartimento di Medicina Molecolare e TraslazionaleUniversità degli Studi di BresciaBresciaItaly
| | - Miriam Romano
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFirenzeItaly
- Dipartimento di Medicina Molecolare e TraslazionaleUniversità degli Studi di BresciaBresciaItaly
| | - Andrea Zendrini
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFirenzeItaly
- Dipartimento di Medicina Molecolare e TraslazionaleUniversità degli Studi di BresciaBresciaItaly
| | - Laura Polito
- Consiglio Nazionale delle RicercheIstituto di Scienze e Tecnologie Chimiche “Giulio Natta”MilanItaly
| | - Greta Bergamaschi
- Consiglio Nazionale delle RicercheIstituto di Scienze e Tecnologie Chimiche “Giulio Natta”MilanItaly
| | - Alessandro Gori
- Consiglio Nazionale delle RicercheIstituto di Scienze e Tecnologie Chimiche “Giulio Natta”MilanItaly
| | - Costanza Montis
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFirenzeItaly
- Dipartimento di Chimica “Ugo Schiff”Università degli Studi di FirenzeFirenzeItaly
| | - Stefano Panella
- Istituto Cardiocentro TicinoEnte Ospedaliero CantonaleLuganoSwitzerland
| | - Lucio Barile
- Istituto Cardiocentro TicinoEnte Ospedaliero CantonaleLuganoSwitzerland
| | - Debora Berti
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFirenzeItaly
- Dipartimento di Chimica “Ugo Schiff”Università degli Studi di FirenzeFirenzeItaly
| | - Annalisa Radeghieri
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFirenzeItaly
- Dipartimento di Medicina Molecolare e TraslazionaleUniversità degli Studi di BresciaBresciaItaly
| | - Paolo Bergese
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFirenzeItaly
- Dipartimento di Medicina Molecolare e TraslazionaleUniversità degli Studi di BresciaBresciaItaly
- Consiglio Nazionale delle Ricerche, Istituto per la Ricerca e l'innovazione BiomedicaPalermoItaly
| | - Marina Cretich
- Consiglio Nazionale delle RicercheIstituto di Scienze e Tecnologie Chimiche “Giulio Natta”MilanItaly
| | - Francesco Valle
- Consiglio Nazionale delle RicercheIstituto per lo Studio dei Materiali NanostrutturatiBolognaItaly
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande InterfaseFirenzeItaly
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6
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Montesissa M, Borciani G, Rubini K, Valle F, Boi M, Baldini N, Boanini E, Graziani G. Ionized Jet Deposition of Calcium Phosphates-Based Nanocoatings: Tuning Coating Properties and Cell Behavior by Target Composition and Substrate Heating. Nanomaterials (Basel) 2023; 13:nano13111758. [PMID: 37299661 DOI: 10.3390/nano13111758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/22/2023] [Accepted: 05/27/2023] [Indexed: 06/12/2023]
Abstract
Calcium phosphate-based coatings are widely studied in orthopedics and dentistry for their similarity to the mineral component of bone and their capability to promote osseointegration. Different calcium phosphates have tunable properties that result in different behaviors in vitro, but the majority of studies focus only on hydroxyapatite. Here, different calcium phosphate-based nanostructured coatings are obtained by ionized jet deposition, starting with hydroxyapatite, brushite and beta-tricalcium phosphate targets. The properties of the coatings obtained from different precursors are systematically compared by assessing their composition, morphology, physical and mechanical properties, dissolution, and in vitro behavior. In addition, for the first time, depositions at high temperature are investigated for the further tuning of the coatings mechanical properties and stability. Results show that different phosphates can be deposited with good composition fidelity even if not in a crystalline phase. All coatings are nanostructured and non-cytotoxic and display variable surface roughness and wettability. Upon heating, higher adhesion and hydrophilicity are obtained as well as higher stability, resulting in better cell viability. Interestingly, different phosphates show very different in vitro behavior, with brushite being the most suitable for promoting cell viability and beta-tricalcium phosphate having a higher impact on cell morphology at the early timepoints.
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Affiliation(s)
- Matteo Montesissa
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40138 Bologna, Italy
| | - Giorgia Borciani
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40138 Bologna, Italy
| | - Katia Rubini
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy
| | - Francesco Valle
- Institute of Nanostructured Materials, National Research Council, 40129 Bologna, Italy
| | - Marco Boi
- BST Biomedical Science and Technologies and Nanobiotechnology Laboratory, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Nicola Baldini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40138 Bologna, Italy
- BST Biomedical Science and Technologies and Nanobiotechnology Laboratory, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Elisa Boanini
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy
| | - Gabriela Graziani
- BST Biomedical Science and Technologies and Nanobiotechnology Laboratory, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
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7
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Ghezzi D, Boi M, Sassoni E, Valle F, Giusto E, Boanini E, Baldini N, Cappelletti M, Graziani G. Customized biofilm device for antibiofilm and antibacterial screening of newly developed nanostructured silver and zinc coatings. J Biol Eng 2023; 17:18. [PMID: 36879323 PMCID: PMC9987098 DOI: 10.1186/s13036-023-00326-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 01/19/2023] [Indexed: 03/08/2023] Open
Abstract
BACKGROUND Bacterial colonisation on implantable device surfaces is estimated to cause more than half of healthcare-associated infections. The application of inorganic coatings onto implantable devices limits/prevents microbial contaminations. However, reliable and high-throughput deposition technologies and experimental trials of metal coatings for biomedical applications are missing. Here, we propose the combination of the Ionized Jet Deposition (IJD) technology for metal-coating application, with the Calgary Biofilm Device (CBD) for high-throughput antibacterial and antibiofilm screening, to develop and screen novel metal-based coatings. RESULTS The films are composed of nanosized spherical aggregates of metallic silver or zinc oxide with a homogeneous and highly rough surface topography. The antibacterial and antibiofilm activity of the coatings is related with the Gram staining, being Ag and Zn coatings more effective against gram-negative and gram-positive bacteria, respectively. The antibacterial/antibiofilm effect is proportional to the amount of metal deposited that influences the amount of metal ions released. The roughness also impacts the activity, mostly for Zn coatings. Antibiofilm properties are stronger on biofilms developing on the coating than on biofilms formed on uncoated substrates. This suggests a higher antibiofilm effect arising from the direct contact bacteria-coating than that associated with the metal ions release. Proof-of-concept of application to titanium alloys, representative of orthopaedic prostheses, confirmed the antibiofilm results, validating the approach. In addition, MTT tests show that the coatings are non-cytotoxic and ICP demonstrates that they have suitable release duration (> 7 days), suggesting the applicability of these new generation metal-based coatings for the functionalization of biomedical devices. CONCLUSIONS The combination of the Calgary Biofilm Device with the Ionized Jet Deposition technology proved to be an innovative and powerful tool that allows to monitor both the metal ions release and the surface topography of the films, which makes it suitable for the study of the antibacterial and antibiofilm activity of nanostructured materials. The results obtained with the CBD were validated with coatings on titanium alloys and extended by also considering the anti-adhesion properties and biocompatibility. In view of upcoming application in orthopaedics, these evaluations would be useful for the development of materials with pleiotropic antimicrobial mechanisms.
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Affiliation(s)
- Daniele Ghezzi
- Biomedical Science and Technologies and Nanobiotechnology Lab, IRCCS Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, 40136, Bologna, Italy
| | - Marco Boi
- Biomedical Science and Technologies and Nanobiotechnology Lab, IRCCS Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, 40136, Bologna, Italy
| | - Enrico Sassoni
- Department of Civil, University of Bologna, Chemical, Environmental and Materials Engineering, Via Terracini 28, 40131, Bologna, Italy
| | - Francesco Valle
- Institute of Nanostructured Materials, National Research Council (ISMN-CNR), Via Piero Gobetti, 101, 40129, Bologna, Italy
| | - Elena Giusto
- Blizard Institute, Queen Mary University of London, 4 Newark St, London, E1 2AT, UK
| | - Elisa Boanini
- Department of Chemistry, University of Bologna, Giacomo Ciamician", Via Selmi 2, Bologna, Italy
| | - Nicola Baldini
- Biomedical Science and Technologies and Nanobiotechnology Lab, IRCCS Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, 40136, Bologna, Italy.,Department of Biomedical and Neuromotor Sciences, University of Bologna, Via Massarenti 9, 40128, Bologna, Italy
| | - Martina Cappelletti
- Department of Pharmacy and Biotechnology, University of Bologna, Via Irnerio 42, 40126, Bologna, Italy.
| | - Gabriela Graziani
- Biomedical Science and Technologies and Nanobiotechnology Lab, IRCCS Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, 40136, Bologna, Italy.
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8
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D'Andrea L, Cardamone M, Bogoni F, Forzinetti E, Enei V, Valle F, Giordano G, Gastaldi D, Vena P. Anisotropic Mechanical Response of Bovine Pericardium Membrane Through Bulge Test and In-Situ Confocal-Laser Scanning. J Biomech Eng 2023; 145:1152325. [PMID: 36472464 DOI: 10.1115/1.4056398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022]
Abstract
In this work, we present a new experimental setup for the assessment of the anisotropic properties of Bovine Pericardium (BP) membranes. The chemically fixed BP samples have been subjected to a bulge test with in situ confocal laser scanning at increasing applied pressure. The high resolution topography provided by the confocal laser scanning has allowed to obtain a quantitative measure of the bulge displacement; after polynomial fitting, principal curvatures have been obtained and a degree of anisotropy (DA) has been defined as the normalized difference between the maximum and minimum principal curvatures. The experiments performed on the BP membranes have allowed us to obtain pressure-displacement data which clearly exhibit distinct principal curvatures indicating an anisotropic response. A comparison with curvatures data obtained on isotropic Nitrile Buthadiene Rubber (NBR) samples has confirmed the effectiveness of the experimental setup for this specific purpose. Numerical simulations of the bulge tests have been performed with the purpose of identifying a range of constitutive parameters which well describes the obtained range of DA on the BP membranes. The DA values have been partially validated with biaxial tests available in literature and with suitably performed uni-axial tensile tests.
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Affiliation(s)
- Luca D'Andrea
- Department of Chemistry, Materials and Chemical Engineering Giulio Natta, Politecnico di Milano, Milano 20133, Italy
| | - Maddalena Cardamone
- Department of Chemistry, Materials and Chemical Engineering Giulio Natta, Politecnico di Milano, Milano 20133, Italy
| | - Francesca Bogoni
- Department of Chemistry, Materials and Chemical Engineering Giulio Natta, Politecnico di Milano, Milano 20133, Italy
| | - Elisa Forzinetti
- Department of Chemistry, Materials and Chemical Engineering Giulio Natta, Politecnico di Milano, Milano 20133, Italy
| | - Viviana Enei
- Department of Chemistry, Materials and Chemical Engineering Giulio Natta, Politecnico di Milano, Milano 20133, Italy
| | | | | | - Dario Gastaldi
- Department of Chemistry, Materials and Chemical Engineering Giulio Natta, Politecnico di Milano, Milano 20133, Italy
| | - Pasquale Vena
- Department of Chemistry, Materials and Chemical Engineering Giulio Natta, Politecnico di Milano, Milano 20133, Italy
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9
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Cardellini J, Ridolfi A, Donati M, Giampietro V, Severi M, Brucale M, Valle F, Bergese P, Montis C, Caselli L, Berti D. Probing the coverage of nanoparticles by biomimetic membranes through nanoplasmonics. J Colloid Interface Sci 2023; 640:100-109. [PMID: 36842416 DOI: 10.1016/j.jcis.2023.02.073] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/29/2023] [Accepted: 02/13/2023] [Indexed: 02/24/2023]
Abstract
Although promising for biomedicine, the clinical translation of inorganic nanoparticles (NPs) is limited by low biocompatibility and stability in biological fluids. A common strategy to circumvent this drawback consists in disguising the active inorganic core with a lipid bilayer coating, reminiscent of the structure of the cell membrane to redefine the chemical and biological identity of NPs. While recent reports introduced membrane-coating procedures for NPs, a robust and accessible method to quantify the integrity of the bilayer coverage is not yet available. To fill this gap, we prepared SiO2 nanoparticles (SiO2NPs) with different membrane coverage degrees and monitored their interaction with AuNPs by combining microscopic, scattering, and optical techniques. The membrane-coating on SiO2NPs induces spontaneous clustering of AuNPs, whose extent depends on the coating integrity. Remarkably, we discovered a linear correlation between the membrane coverage and a spectral descriptor for the AuNPs' plasmonic resonance, spanning a wide range of coating yields. These results provide a fast and cost-effective assay to monitor the compatibilization of NPs with biological environments, essential for bench tests and scale-up. In addition, we introduce a robust and scalable method to prepare SiO2NPs/AuNPs hybrids through spontaneous self-assembly, with a high-fidelity structural control mediated by a lipid bilayer.
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Affiliation(s)
- Jacopo Cardellini
- Department of Chemistry "Ugo Schiff", University of Florence, Florence, Italy; CSGI, Consorzio Sistemi a Grande Interfase, University of Florence, Sesto Fiorentino, Italy
| | - Andrea Ridolfi
- Department of Chemistry "Ugo Schiff", University of Florence, Florence, Italy; CSGI, Consorzio Sistemi a Grande Interfase, University of Florence, Sesto Fiorentino, Italy; Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy; Department of Physics and Astronomy and LaserLaB Amsterdam, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands(1)
| | - Melissa Donati
- Department of Chemistry "Ugo Schiff", University of Florence, Florence, Italy
| | | | - Mirko Severi
- Department of Chemistry "Ugo Schiff", University of Florence, Florence, Italy
| | - Marco Brucale
- CSGI, Consorzio Sistemi a Grande Interfase, University of Florence, Sesto Fiorentino, Italy; Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy
| | - Francesco Valle
- CSGI, Consorzio Sistemi a Grande Interfase, University of Florence, Sesto Fiorentino, Italy; Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy
| | - Paolo Bergese
- CSGI, Consorzio Sistemi a Grande Interfase, University of Florence, Sesto Fiorentino, Italy; Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy; Consorzio Interuniversitario Nazionale per la Scienza e la Tecnologia dei Materiali, Florence, Italy
| | - Costanza Montis
- Department of Chemistry "Ugo Schiff", University of Florence, Florence, Italy; CSGI, Consorzio Sistemi a Grande Interfase, University of Florence, Sesto Fiorentino, Italy
| | - Lucrezia Caselli
- Department of Chemistry "Ugo Schiff", University of Florence, Florence, Italy; CSGI, Consorzio Sistemi a Grande Interfase, University of Florence, Sesto Fiorentino, Italy; Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden(1).
| | - Debora Berti
- Department of Chemistry "Ugo Schiff", University of Florence, Florence, Italy; CSGI, Consorzio Sistemi a Grande Interfase, University of Florence, Sesto Fiorentino, Italy.
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10
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Sacco PL, Valle F, De Domenico M. Proactive vs. reactive country responses to the COVID-19 pandemic shock. PLOS Glob Public Health 2023; 3:e0001345. [PMID: 36962977 PMCID: PMC10021818 DOI: 10.1371/journal.pgph.0001345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 12/08/2022] [Indexed: 01/25/2023]
Abstract
The infection caused by SARS-CoV-2, responsible for the COVID-19 pandemic, is characterized by an infectious period with either asymptomatic or pre-symptomatic phases, leading to a rapid surge of mild and severe cases putting national health systems under serious stress. To avoid their collapse, and in the absence of pharmacological treatments, during the early pandemic phase countries worldwide were forced to adopt strategies, from elimination to mitigation, based on non-pharmacological interventions which, in turn, overloaded social, educational and economic systems. To date, the heterogeneity and incompleteness of data sources does not allow to quantify the multifaceted impact of the pandemic at country level and, consequently, to compare the effectiveness of country responses. Here, we tackle this challenge from a complex systems perspective, proposing a model to evaluate the impact of systemic failures in response to the pandemic shock. We use health, behavioral and economic indicators for 44 countries to build a shock index quantifying responses in terms of robustness and resilience, highlighting the crucial advantage of proactive policy and decision making styles over reactive ones, which can be game-changing during the emerging of a new variant of concern.
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Affiliation(s)
- Pier Luigi Sacco
- DiSFiPEQ, University of Chieti-Pescara, Pescara, Italy
- metaLAB (at) Harvard, Cambridge, Massachusetts, United States of America
| | | | - Manlio De Domenico
- Department of Physics and Astronomy "Galileo Galilei", University of Padova, Padova, Italy
- Padua Center for Network Medicine, Padova, Italy
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11
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Sless R, Wright S, Bentley R, Valle F, Mak S. SEX DIFFERENCES IN PULMONARY AND SYSTEMIC VASCULAR FUNCTION AT REST AND DURING EXERCISE IN HEALTHY OLDER ADULTS. Can J Cardiol 2022. [DOI: 10.1016/j.cjca.2022.08.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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12
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Park J, Miner S, Gurtu V, Valle F, Mak S. LINKS BETWEEN CORONARY MICROVASCULAR DYSFUNCTION AND EVIDENCE OF HEART FAILURE WITH PRESERVED EJECTIVE FRACTION. Can J Cardiol 2022. [DOI: 10.1016/j.cjca.2022.08.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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13
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Ridolfi A, Humphreys B, Caselli L, Montis C, Nylander T, Berti D, Brucale M, Valle F. Nanoscale structural and mechanical characterization of thin bicontinuous cubic phase lipid films. Colloids Surf B Biointerfaces 2021; 210:112231. [PMID: 34838417 DOI: 10.1016/j.colsurfb.2021.112231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/03/2021] [Accepted: 11/15/2021] [Indexed: 10/19/2022]
Abstract
The mechanical response of lipid membranes to nanoscale deformations is of fundamental importance for understanding how these interfaces behave in multiple biological processes; in particular, the nanoscale mechanics of non-lamellar membranes represents a largely unexplored research field. Among these mesophases, inverse bicontinuous cubic phase QII membranes have been found to spontaneously occur in stressed or virally infected cells and to play a role in fundamental processes, such as cell fusion and food digestion. We herein report on the fabrication of thin ( ̴150 nm) supported QII cubic phase lipid films (SQIIFs) and on their characterization via multiple techniques including Small Angle X-Ray Scattering (SAXS), Ellipsometry and Atomic Force Microscopy (AFM). Moreover, we present the first nanomechanical characterization of a cubic phase lipid membrane, through AFM-based Force Spectroscopy (AFM-FS). Our analysis reveals that the mechanical response of these architectures is strictly related to their topology and structure. The observed properties are strikingly similar to those of macroscopic 3D printed cubic structures when subjected to compression tests in material science; suggesting that this behaviour depends on the 3D organisation, rather than on the length-scale of the architecture. We also show for the first time that AFM-FS can be used for characterizing the structure of non-lamellar mesophases, obtaining lattice parameters in agreement with SAXS data. In contrast to classical rheological studies, which can only probe bulk cubic phase solutions, our AFM-FS analysis allows probing the response of cubic membranes to deformations occurring at length and force scales similar to those found in biological interactions.
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Affiliation(s)
- Andrea Ridolfi
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy; Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, 40129 Bologna, Italy; Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, 50019 Firenze, Italy
| | - Ben Humphreys
- Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden; Lund Institute of Advanced Neutron and X-ray Science - LINXS, SE- 223 70 Lund, Sweden; NanoLund, Lund University, SE-221 00 Lund, Sweden
| | - Lucrezia Caselli
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy; Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, 50019 Firenze, Italy
| | - Costanza Montis
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy; Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, 50019 Firenze, Italy
| | - Tommy Nylander
- Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden; Lund Institute of Advanced Neutron and X-ray Science - LINXS, SE- 223 70 Lund, Sweden; NanoLund, Lund University, SE-221 00 Lund, Sweden
| | - Debora Berti
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy; Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, 50019 Firenze, Italy
| | - Marco Brucale
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy; Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, 40129 Bologna, Italy
| | - Francesco Valle
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy; Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, 40129 Bologna, Italy
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14
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Ridolfi A, Caselli L, Baldoni M, Montis C, Mercuri F, Berti D, Valle F, Brucale M. Stiffness of Fluid and Gel Phase Lipid Nanovesicles: Weighting the Contributions of Membrane Bending Modulus and Luminal Pressurization. Langmuir 2021; 37:12027-12037. [PMID: 34610740 DOI: 10.1021/acs.langmuir.1c01660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The mechanical properties of biogenic membranous compartments are thought to be relevant in numerous biological processes; however, their quantitative measurement remains challenging for most of the already available force spectroscopy (FS)-based techniques. In particular, the debate on the mechanics of lipid nanovesicles and on the interpretation of their mechanical response to an applied force is still open. This is mostly due to the current lack of a unified model being able to describe the mechanical response of both gel and fluid phase lipid vesicles and to disentangle the contributions of membrane rigidity and luminal pressure. In this framework, we herein propose a simple model in which the interplay of membrane rigidity and luminal pressure to the overall vesicle stiffness is described as a series of springs; this approach allows estimating these two contributions for both gel and fluid phase liposomes. Atomic force microscopy-based FS, performed on both vesicles and supported lipid bilayers, is exploited for obtaining all the parameters involved in the model. Moreover, the use of coarse-grained full-scale molecular dynamics simulations allowed for better understanding of the differences in the mechanical responses of gel and fluid phase bilayers and supported the experimental findings. The results suggest that the pressure contribution is similar among all the probed vesicle types; however, it plays a dominant role in the mechanical response of lipid nanovesicles presenting a fluid phase membrane, while its contribution becomes comparable to the one of membrane rigidity in nanovesicles with a gel phase lipid membrane. The results presented herein offer a simple way to quantify two of the most important parameters in vesicle nanomechanics (membrane rigidity and internal pressurization), and as such represent a first step toward a currently unavailable, unified model for the mechanical response of gel and fluid phase lipid nanovesicles.
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Affiliation(s)
- Andrea Ridolfi
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, 50019 Firenze, Italy
| | - Lucrezia Caselli
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, 50019 Firenze, Italy
| | - Matteo Baldoni
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy
| | - Costanza Montis
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, 50019 Firenze, Italy
| | - Francesco Mercuri
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy
| | - Debora Berti
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, 50019 Firenze, Italy
| | - Francesco Valle
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy
| | - Marco Brucale
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Firenze, Italy
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy
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15
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Bortot B, Apollonio M, Rampazzo E, Valle F, Brucale M, Ridolfi A, Ura B, Addobbati R, Di Lorenzo G, Romano F, Buonomo F, Ripepi C, Ricci G, Biffi S. Small extracellular vesicles from malignant ascites of patients with advanced ovarian cancer provide insights into the dynamics of the extracellular matrix. Mol Oncol 2021; 15:3596-3614. [PMID: 34614287 PMCID: PMC8637559 DOI: 10.1002/1878-0261.13110] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/31/2021] [Accepted: 10/04/2021] [Indexed: 12/30/2022] Open
Abstract
The exact role of malignant ascites in the development of intraperitoneal metastases remains unclear, and the mechanisms by which extracellular vesicles (EVs) promote tumor progression in the pre-metastatic niche have not been fully discovered. In this study, we characterized ascites from high-grade epithelial ovarian cancer patients. Small-EVs (30-150 nm) were isolated from two sources-the bulk ascites and the ascitic fluid-derived tumor cell cultures-and assessed with a combination of imaging, proteomic profiling, and protein expression analyses. In addition, Gene Ontology and pathway analysis were performed using different databases and bioinformatic tools. The results proved that the small-EVs derived from the two sources exhibited significantly different stiffness and size distributions. The bulk ascitic fluid-derived small-EVs were predominantly involved in the complement and coagulation cascade. Small-EVs derived from ascites cell cultures contained a robust proteomic profile of extracellular matrix remodeling regulators, and we observed an increase in transforming growth factor-β-I (TGFβI), plasminogen activator inhibitor 1 (PAI-1), and fibronectin expression after neoadjuvant chemotherapy. When measured in the two sources, we demonstrated that fibronectin exhibited opposite expression patterns in small-EVs in response to chemotherapy. These findings highlight the importance of an ascites cell isolation workflow in investigating the treatment-induced cancer adaption processes.
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Affiliation(s)
- Barbara Bortot
- Department of Medical Genetics, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Maura Apollonio
- Pediatric Department, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Enrico Rampazzo
- Department of Chemistry "Giacomo Ciamician", University of Bologna, Italy
| | - Francesco Valle
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Firenze, Italy.,Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNRISMN), Bologna, Italy
| | - Marco Brucale
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Firenze, Italy.,Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNRISMN), Bologna, Italy
| | - Andrea Ridolfi
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Firenze, Italy.,Department of Chemistry, University of Firenze, Italy
| | - Blendi Ura
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Riccardo Addobbati
- Department of Clinical Toxicology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Giovanni Di Lorenzo
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Federico Romano
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Francesca Buonomo
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Chiara Ripepi
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Giuseppe Ricci
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy.,Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Italy
| | - Stefania Biffi
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
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16
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Stagno V, Egizi F, Corticelli F, Morandi V, Valle F, Costantini G, Longo S, Capuani S. Microstructural features assessment of different waterlogged wood species by NMR diffusion validated with complementary techniques. Magn Reson Imaging 2021; 83:139-151. [PMID: 34454984 DOI: 10.1016/j.mri.2021.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 07/27/2021] [Accepted: 08/25/2021] [Indexed: 12/13/2022]
Abstract
Wood is a hygroscopic, multi-scale and anisotropic natural material composed of pores with different size and differently oriented. In particular, archaeologically excavated wood generally is waterlogged wood with very high moisture content (400%-800%) that need to have a rapid investigation at the microstructural level to obtain the best treatment with preservative agents. Time-dependent diffusion coefficient D(t) quantified by Pulse Field Gradient (PFG) Nuclear Magnetic Resonance (NMR) techniques provides useful information about complex porous media, such as the tortuosity (τ) describing pore connectivity and fluid transport through media, the average-pore size, the anisotropic degree (an). However, diffusion NMR is intrinsically limited since it is an indirect measure of medium microstructure and relies on inferences from models and estimation of relevant diffusion parameters. Therefore, it is necessary to validate the information obtained from NMR diffusion parameters through complementary investigations. In this work, the structures of five waterlogged wood species were studied by PFG of absorbed water. D(t) and τ of water diffusing along and perpendicular to vessels/tracheids main axes together with relaxation times and an were quantified. From these parameters, the pore sizes distribution and the wood microstructure characterization were obtained. Results among wood species were compared, validated and integrated by micro-imaging NMR (μ-MRI), environmental-scanning electron-microscope (ESEM) images, wood dry density and imbibition times measurement of all woods. The work suggests that an vs τ rather than the estimated pore size diversifies and characterize the different wood species. As a consequence diffusion-anisotropy vs tortuosity could be an alternative method to characterize and differentiate wood species of waterlogged wood when high resolution images (μ-MRI and ESEM) are not available. Moreover, the combined use of D(t) and micro-MRI expands the scale of dimensions observable by NMR covering all the interesting length scales of wood.
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Affiliation(s)
- V Stagno
- Department of Earth Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; National Research Council - Institute for Complex Systems (CNR-ISC) c/o Physics Department Sapienza University of Rome, Rome, Italy
| | - F Egizi
- National Research Council - Institute for Complex Systems (CNR-ISC) c/o Physics Department Sapienza University of Rome, Rome, Italy
| | - F Corticelli
- Consiglio Nazionale delle Ricerche - Istituto per la Microelettronica e Microsistemi (CNR-IMM) Bologna, P. Gobetti 101, 40129 Bologna, Italy
| | - V Morandi
- Consiglio Nazionale delle Ricerche - Istituto per la Microelettronica e Microsistemi (CNR-IMM) Bologna, P. Gobetti 101, 40129 Bologna, Italy
| | - F Valle
- Consiglio Nazionale delle Ricerche - Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN) Bologna, P. Gobetti 101, 40129 Bologna, Italy
| | - G Costantini
- National Research Council - Institute for Complex Systems (CNR-ISC) c/o Physics Department Sapienza University of Rome, Rome, Italy
| | - S Longo
- National Research Council - Institute for Complex Systems (CNR-ISC) c/o Physics Department Sapienza University of Rome, Rome, Italy; Department of Mathematical and Computational Sciences, Physics Science and Earth Sciences (MIFT), University of Messina, Messina 98166, Italy
| | - S Capuani
- National Research Council - Institute for Complex Systems (CNR-ISC) c/o Physics Department Sapienza University of Rome, Rome, Italy; Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Piazza del Viminale 1, 00184 Rome, Italy.
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17
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Ura B, Biffi S, Monasta L, Arrigoni G, Battisti I, Di Lorenzo G, Romano F, Aloisio M, Celsi F, Addobbati R, Valle F, Rampazzo E, Brucale M, Ridolfi A, Licastro D, Ricci G. Two Dimensional-Difference in Gel Electrophoresis (2D-DIGE) Proteomic Approach for the Identification of Biomarkers in Endometrial Cancer Serum. Cancers (Basel) 2021; 13:cancers13143639. [PMID: 34298850 PMCID: PMC8305989 DOI: 10.3390/cancers13143639] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/29/2021] [Accepted: 07/16/2021] [Indexed: 12/14/2022] Open
Abstract
Endometrial cancer is the most common gynecologic malignancy arising from the endometrium. Identification of serum biomarkers could be beneficial for its early diagnosis. We have used 2D-Difference In Gel Electrophoresis (2D-DIGE) coupled with Mass Spectrometry (MS) procedures to investigate the serum proteome of 15 patients with endometrial cancer and 15 non-cancer subjects. We have identified 16 proteins with diagnostic potential, considering only spots with a fold change in %V ≥ 1.5 or ≤0.6 in intensity, which were statistically significant (p < 0.05). Western blotting data analysis confirmed the upregulation of CLU, ITIH4, SERPINC1, and C1RL in endometrial and exosome cancer sera compared to those of control subjects. The application of the logistic regression constructed based on the abundance of these four proteins separated the controls from the cancers with excellent levels of sensitivity and specificity. After a validation phase, our findings support the potential of using the proposed algorithm as a diagnostic tool in the clinical stage.
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Affiliation(s)
- Blendi Ura
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137 Trieste, Italy; (S.B.); (L.M.); (G.D.L.); (F.R.); (M.A.); (F.C.); (R.A.); (G.R.)
- Correspondence:
| | - Stefania Biffi
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137 Trieste, Italy; (S.B.); (L.M.); (G.D.L.); (F.R.); (M.A.); (F.C.); (R.A.); (G.R.)
| | - Lorenzo Monasta
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137 Trieste, Italy; (S.B.); (L.M.); (G.D.L.); (F.R.); (M.A.); (F.C.); (R.A.); (G.R.)
| | - Giorgio Arrigoni
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (G.A.); (I.B.)
- Proteomics Center, University of Padova and Azienda Ospedaliera di Padova, 35131 Padova, Italy
- CRIBI Biotechnology Center, University of Padova, 35131 Padova, Italy
| | - Ilaria Battisti
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (G.A.); (I.B.)
- Proteomics Center, University of Padova and Azienda Ospedaliera di Padova, 35131 Padova, Italy
| | - Giovanni Di Lorenzo
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137 Trieste, Italy; (S.B.); (L.M.); (G.D.L.); (F.R.); (M.A.); (F.C.); (R.A.); (G.R.)
| | - Federico Romano
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137 Trieste, Italy; (S.B.); (L.M.); (G.D.L.); (F.R.); (M.A.); (F.C.); (R.A.); (G.R.)
| | - Michelangelo Aloisio
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137 Trieste, Italy; (S.B.); (L.M.); (G.D.L.); (F.R.); (M.A.); (F.C.); (R.A.); (G.R.)
| | - Fulvio Celsi
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137 Trieste, Italy; (S.B.); (L.M.); (G.D.L.); (F.R.); (M.A.); (F.C.); (R.A.); (G.R.)
| | - Riccardo Addobbati
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137 Trieste, Italy; (S.B.); (L.M.); (G.D.L.); (F.R.); (M.A.); (F.C.); (R.A.); (G.R.)
| | - Francesco Valle
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Firenze, 50019 Firenze, Italy; (F.V.); (M.B.); (A.R.)
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNRISMN), 40129 Bologna, Italy
| | - Enrico Rampazzo
- Department of Chemistry “Giacomo Ciamician”, University of Bologna, 40126 Bologna, Italy;
| | - Marco Brucale
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Firenze, 50019 Firenze, Italy; (F.V.); (M.B.); (A.R.)
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNRISMN), 40129 Bologna, Italy
| | - Andrea Ridolfi
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Firenze, 50019 Firenze, Italy; (F.V.); (M.B.); (A.R.)
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNRISMN), 40129 Bologna, Italy
- Department of Chemistry, University of Firenze, 50019 Firenze, Italy
| | - Danilo Licastro
- ARGO Laboratorio Genomica ed Epigenomica, AREA Science Park, Basovizza, 34149 Trieste, Italy;
| | - Giuseppe Ricci
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137 Trieste, Italy; (S.B.); (L.M.); (G.D.L.); (F.R.); (M.A.); (F.C.); (R.A.); (G.R.)
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy
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18
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Barbalinardo M, Biagetti M, Valle F, Cavallini M, Falini G, Montroni D. Green Biocompatible Method for the Synthesis of Collagen/Chitin Composites to Study Their Composition and Assembly Influence on Fibroblasts Growth. Biomacromolecules 2021; 22:3357-3365. [PMID: 34278777 DOI: 10.1021/acs.biomac.1c00463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A green biocompatible route for the deposition and simultaneous assembly, by pH increment, of collagen/chitin composites was proposed. Both assembled and unassembled samples with different collagen/chitin ratios were synthesized, maintaining the β-chitin polymorph. The first set showed a microfibrous organization with compositional submicron homogeneity. The second set presented a nanohomogeneous composition based on collagen nanoaggregates and chitin nanofibrils. The sets were tested as scaffolds for fibroblast growth (NIH-3T3) to study the influence of composition and assembly. In the unassembled scaffolds, the positive influence of collagen on cell growth mostly worn out in 48 h, while the addition of chitin enhanced this effect for over 72 h. The assembled samples showed higher viability at 24 h but a less positive effect on viability along the time. This work highlighted critical aspects of the influence that composition and assembly has on fibroblast growth, a knowledge worth exploiting in scaffold design and preparation.
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Affiliation(s)
- Marianna Barbalinardo
- National Research Council (CNR), Institute for Nanostructured Materials (ISMN), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Michele Biagetti
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum-Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy
| | - Francesco Valle
- National Research Council (CNR), Institute for Nanostructured Materials (ISMN), Via P. Gobetti 101, 40129 Bologna, Italy.,Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), ISMN-CNR, 40129 Bologna, Italy
| | - Massimiliano Cavallini
- National Research Council (CNR), Institute for Nanostructured Materials (ISMN), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Giuseppe Falini
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum-Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy
| | - Devis Montroni
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum-Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy
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19
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Caselli L, Ridolfi A, Cardellini J, Sharpnack L, Paolini L, Brucale M, Valle F, Montis C, Bergese P, Berti D. A plasmon-based nanoruler to probe the mechanical properties of synthetic and biogenic nanosized lipid vesicles. Nanoscale Horiz 2021; 6:543-550. [PMID: 33870976 DOI: 10.1039/d1nh00012h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Nanosized lipid vesicles are ubiquitous in living systems (e.g. cellular compartments or extracellular vesicles, EVs) and in formulations for nanomedicine (e.g. liposomes for RNA vaccine formulations). The mechanical properties of such vesicles are crucial in several physicochemical and biological processes, ranging from cellular uptake to stability in aerosols. However, their accurate determination remains challenging and requires sophisticated instruments and data analysis. Here we report the first evidence that the surface plasmon resonance (SPR) of citrated gold nanoparticles (AuNPs) adsorbed on synthetic vesicles is finely sensitive to the vesicles' mechanical properties. We then leverage this finding to show that the SPR tracking provides quantitative access to the stiffness of vesicles of synthetic and natural origin, such as EVs. The demonstration of this plasmon-based "stiffness nanoruler" paves the way for developing a facile, cost-effective and high-throughput method to assay the mechanical properties of dispersions of vesicles of nanometric size and unknown composition at a collective level.
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Affiliation(s)
- Lucrezia Caselli
- Department of Chemistry, University of Florence, Via della Lastruccia 3, Sesto Fiorentino, Florence 50019, Italy.
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20
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Valle F, Tortorella S, Scala A, Cordaro A, Barbalinardo M, Biscarini F, Mazzaglia A. Amphiphilic cationic cyclodextrin nanovesicles: a versatile cue for guiding cell adhesion. Nanoscale Adv 2020; 2:5897-5904. [PMID: 36133883 PMCID: PMC9417668 DOI: 10.1039/d0na00623h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 11/12/2020] [Indexed: 06/16/2023]
Abstract
It is well known that amphiphilic cationic β-cyclodextrins (amβCDs) form nanovesicles able to release their cargo in aqueous solution upon applying different stimuli. In addition they can be selectively positioned onto substrates by unconventional soft lithography. This makes them a powerful tool for designing environments where different cues can be externally supplied to the cells helping to achieve good control of their fate. Lithographically controlled wetting (LCW) of amβCD nanovesicles loaded with fluorescein isothiocyanate (FITC), amβCD/FITC, has been used here to fabricate geometrically functionalized surfaces, thus achieving multiscale control of the cell environment. The amβCD functionalization was strongly influenced by the surface energy of the underlying substrates that, according to their hydrophobicity, orient the amβCD in a different way, thus "offering" different portions to the cells. The structure of the pattern was characterized both over large scales exploiting the FITC fluorescence and at the nanoscale by atomic force microscopy. Cell guidance and aCD/FITC cell internalization were demonstrated in human neuroblastoma SHSY5Y cells.
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Affiliation(s)
- Francesco Valle
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN) Via P. Gobetti 101 40129 Bologna Italy
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI) Firenze Italy
| | - Silvia Tortorella
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna "Alma Mater Studiorum" Via Zamboni 33 40126 Bologna Italy
| | - Angela Scala
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina Viale F. Stagno D'Alcontres, 31 98166 Messina Italy
| | - Annalaura Cordaro
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina Viale F. Stagno D'Alcontres, 31 98166 Messina Italy
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN) c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina Viale F. Stagno D'Alcontres, 31 98166 Messina Italy
| | - Marianna Barbalinardo
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN) Via P. Gobetti 101 40129 Bologna Italy
| | - Fabio Biscarini
- Università di Modena e Reggio Emilia, Dipartimento di Scienze della Vita Via Campi 103 41125 Modena Italy
- Istituto Italiano di Tecnologia, Center for Translational Neurophysiology Via Fossato di Mortara 17-19 4412 Ferrara Italy
| | - Antonino Mazzaglia
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN) c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina Viale F. Stagno D'Alcontres, 31 98166 Messina Italy
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21
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Magnabosco G, Pantano MF, Rapino S, Di Giosia M, Valle F, Taxis L, Sparla F, Falini G, Pugno NM, Calvaresi M. A Plant Bioreactor for the Synthesis of Carbon Nanotube Bionic Nanocomposites. Front Bioeng Biotechnol 2020; 8:560349. [PMID: 33251194 PMCID: PMC7676904 DOI: 10.3389/fbioe.2020.560349] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 10/14/2020] [Indexed: 12/15/2022] Open
Abstract
Bionic composites are an emerging class of materials produced exploiting living organisms as reactors to include synthetic functional materials in their native and highly performing structures. In this work, single wall carboxylated carbon nanotubes (SWCNT-COOH) were incorporated within the roots of living plants of Arabidopsis thaliana. This biogenic synthetic route produced a bionic composite material made of root components and SWCNT-COOH. The synthesis was possible exploiting the transport processes existing in the plant roots. Scanning electrochemical microscopy (SECM) measurements showed that SWCNT-COOH entered the vascular bundles of A. thaliana roots localizing within xylem vessels. SWCNT-COOH preserved their electrical properties when embedded inside the root matrix, both at a microscopic level and a macroscopic level, and did not significantly affect the mechanical properties of A. thaliana roots.
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Affiliation(s)
- Giulia Magnabosco
- Dipartimento di Chimica "Giacomo Ciamician," Alma mater Studiorum-Università di Bologna, Bologna, Italy
| | - Maria F Pantano
- Laboratory of Bio-Inspired, Bionic, Nano, Meta Materials and Mechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Trento, Italy
| | - Stefania Rapino
- Dipartimento di Chimica "Giacomo Ciamician," Alma mater Studiorum-Università di Bologna, Bologna, Italy
| | - Matteo Di Giosia
- Dipartimento di Chimica "Giacomo Ciamician," Alma mater Studiorum-Università di Bologna, Bologna, Italy
| | - Francesco Valle
- Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Consiglio Nazionale delle Ricerche, Bologna, Italy
| | - Ludovic Taxis
- Laboratory of Bio-Inspired, Bionic, Nano, Meta Materials and Mechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Trento, Italy
| | - Francesca Sparla
- Department of Pharmacy and Biotechnology, Alma mater Studiorum-Università di Bologna, Bologna, Italy
| | - Giuseppe Falini
- Dipartimento di Chimica "Giacomo Ciamician," Alma mater Studiorum-Università di Bologna, Bologna, Italy
| | - Nicola M Pugno
- Laboratory of Bio-Inspired, Bionic, Nano, Meta Materials and Mechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Trento, Italy.,School of Engineering and Materials Science, Queen Mary University of London, London, United Kingdom
| | - Matteo Calvaresi
- Dipartimento di Chimica "Giacomo Ciamician," Alma mater Studiorum-Università di Bologna, Bologna, Italy
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22
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Gallotti R, Valle F, Castaldo N, Sacco P, De Domenico M. Assessing the risks of 'infodemics' in response to COVID-19 epidemics. Nat Hum Behav 2020; 4:1285-1293. [PMID: 33122812 DOI: 10.1038/s41562-020-00994-6] [Citation(s) in RCA: 153] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 10/05/2020] [Indexed: 12/21/2022]
Abstract
During COVID-19, governments and the public are fighting not only a pandemic but also a co-evolving infodemic-the rapid and far-reaching spread of information of questionable quality. We analysed more than 100 million Twitter messages posted worldwide during the early stages of epidemic spread across countries (from 22 January to 10 March 2020) and classified the reliability of the news being circulated. We developed an Infodemic Risk Index to capture the magnitude of exposure to unreliable news across countries. We found that measurable waves of potentially unreliable information preceded the rise of COVID-19 infections, exposing entire countries to falsehoods that pose a serious threat to public health. As infections started to rise, reliable information quickly became more dominant, and Twitter content shifted towards more credible informational sources. Infodemic early-warning signals provide important cues for misinformation mitigation by means of adequate communication strategies.
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Affiliation(s)
| | | | | | - Pierluigi Sacco
- IULM University, Milan, Italy. .,Fondazione Bruno Kessler, Trento, Italy.
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23
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Guidotti G, Soccio M, Posati T, Sotgiu G, Tiboni M, Barbalinardo M, Valle F, Casettari L, Zamboni R, Lotti N, Aluigi A. Regenerated wool keratin-polybutylene succinate nanofibrous mats for drug delivery and cells culture. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109272] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Montis C, Caselli L, Valle F, Zendrini A, Carlà F, Schweins R, Maccarini M, Bergese P, Berti D. Shedding light on membrane-templated clustering of gold nanoparticles. J Colloid Interface Sci 2020; 573:204-214. [DOI: 10.1016/j.jcis.2020.03.123] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/30/2020] [Accepted: 03/31/2020] [Indexed: 12/30/2022]
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Ridolfi A, Brucale M, Montis C, Caselli L, Paolini L, Borup A, Boysen AT, Loria F, van Herwijnen MJC, Kleinjan M, Nejsum P, Zarovni N, Wauben MHM, Berti D, Bergese P, Valle F. AFM-Based High-Throughput Nanomechanical Screening of Single Extracellular Vesicles. Anal Chem 2020; 92:10274-10282. [DOI: 10.1021/acs.analchem.9b05716] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Andrea Ridolfi
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, 50019 Firenze, Italy
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, Via P. Gobetti 101, 40129 Bologna, Italy
- Dipartimento di Chimica “Ugo Schiff”, Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Firenze, Italy
| | - Marco Brucale
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, 50019 Firenze, Italy
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, Via P. Gobetti 101, 40129 Bologna, Italy
| | - Costanza Montis
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, 50019 Firenze, Italy
- Dipartimento di Chimica “Ugo Schiff”, Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Firenze, Italy
| | - Lucrezia Caselli
- Dipartimento di Chimica “Ugo Schiff”, Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Firenze, Italy
| | - Lucia Paolini
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, 50019 Firenze, Italy
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Anne Borup
- Department of Clinical Medicine, Faculty of Health, Aarhus University, P. Juul-Jensens Boulevard 45, 8200 Aarhus, Denmark
| | - Anders T. Boysen
- Department of Clinical Medicine, Faculty of Health, Aarhus University, P. Juul-Jensens Boulevard 45, 8200 Aarhus, Denmark
| | - Francesca Loria
- HansaBiomed Life Sciences, Mäealuse 2/1, 12618 Tallinn, Estonia
| | - Martijn J. C. van Herwijnen
- Department of Biochemistry & Cell Biology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, The Netherlands
| | - Marije Kleinjan
- Department of Biochemistry & Cell Biology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, The Netherlands
| | - Peter Nejsum
- Department of Clinical Medicine, Faculty of Health, Aarhus University, P. Juul-Jensens Boulevard 45, 8200 Aarhus, Denmark
| | - Natasa Zarovni
- HansaBiomed Life Sciences, Mäealuse 2/1, 12618 Tallinn, Estonia
| | - Marca H. M. Wauben
- Department of Biochemistry & Cell Biology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, The Netherlands
| | - Debora Berti
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, 50019 Firenze, Italy
- Dipartimento di Chimica “Ugo Schiff”, Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Firenze, Italy
| | - Paolo Bergese
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, 50019 Firenze, Italy
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Francesco Valle
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, 50019 Firenze, Italy
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, Via P. Gobetti 101, 40129 Bologna, Italy
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Di Giosia M, Marforio TD, Cantelli A, Valle F, Zerbetto F, Su Q, Wang H, Calvaresi M. Inhibition of α-chymotrypsin by pristine single-wall carbon nanotubes: Clogging up the active site. J Colloid Interface Sci 2020; 571:174-184. [DOI: 10.1016/j.jcis.2020.03.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/26/2020] [Accepted: 03/08/2020] [Indexed: 10/24/2022]
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Ridolfi A, Caselli L, Montis C, Mangiapia G, Berti D, Brucale M, Valle F. Gold nanoparticles interacting with synthetic lipid rafts: an AFM investigation. J Microsc 2020; 280:194-203. [PMID: 32432336 DOI: 10.1111/jmi.12910] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/12/2020] [Accepted: 05/14/2020] [Indexed: 12/30/2022]
Abstract
Inorganic nanoparticles (NPs) represent promising examples of engineered nanomaterials, providing interesting biomedical solutions in several fields, like therapeutics and diagnostics. Despite the extensive number of investigations motivated by their remarkable potential for nanomedicinal applications, the interactions of NPs with biological interfaces are still poorly understood. The effect of NPs on living organisms is mediated by biological barriers, such as the cell plasma membrane, whose lateral heterogeneity is thought to play a prominent role in NPs adsorption and uptake pathways. In particular, biological membranes feature the presence of rafts, that is segregated lipid micro and/or nanodomains in the so-called liquid ordered phase (Lo ), immiscible with the surrounding liquid disordered phase (Ld ). Rafts are involved in various biological functions and act as sites for the selective adsorption of materials on the membrane. Indeed, the thickness mismatch present along their boundaries generates energetically favourable conditions for the adsorption of NPs. Despite its clear implications in NPs internalisation processes and cytotoxicity, a direct proof of the selective adsorption of NPs along the rafts' boundaries is still missing to date. Here we use multicomponent supported lipid bilayers (SLBs) as reliable synthetic models, reproducing the nanometric lateral heterogeneity of cell membranes. After being characterised by atomic force microscopy (AFM) and neutron reflectivity (NR), multidomain SLBs are challenged by prototypical inorganic nanoparticles, that is citrated gold nanoparticles (AuNPs), under simplified and highly controlled conditions. By exploiting AFM, we demonstrate that AuNPs preferentially target lipid phase boundaries as adsorption sites. The herein reported study consolidates and extends the fundamental knowledge on NPs-membrane interactions, which constitute a key aspect to consider when designing NPs-related biomedical applications. LAY DESCRIPTION: Inorganic nanoparticles (NPs) represent promising examples of engineered nanomaterials, offering interesting biomedical solutions in multiple fields like therapeutics and diagnostics. Despite being extensively investigated due to their remarkable potential for nanomedicinal applications, the interaction of NPs with biological systems is in several cases still poorly understood. The interaction of NPs with living organisms is mediated by biological barriers, such as the cell plasma membrane. Supported lipid bilayers (SLBs) represent suitable synthetic membrane models for studying the physicochemical properties of natural interfaces and their interaction with inorganic nanomaterials under simplified and controlled conditions. Recently, multicomponent SLBs were developed in order to mimic the lateral heterogeneity of most biological membranes. In particular, biological membranes feature the presence of rafts, that is segregated lipid micro and/or nanodomains, enriched in cholesterol, sphingomyelin, saturated glycerophospholipids and glycosphingolipids: these lipids segregate in the so-called liquid-ordered phase (Lo ), characterised by a high molecular packing degree, which promotes the phase separation from the surrounding liquid-crystalline (disordered, Ld ) phase, where the intermolecular mobility is increased. Rafts are thought to participate in the formation and targeting of nano-sized biogenic lipid vesicles and are also actively involved in multiple membrane processes. Indeed, Lo -Ld phase boundaries represent high energy areas, providing active sites for the preferential adsorption of external material. The selective adsorption of NPs along the phase boundaries of rafted membranes has been theorised and indirectly probed by different research groups; however, a direct proof of this phenomenon is still missing to date. We herein exploit atomic force microscopy (AFM) to directly visualise the preferential adsorption of gold nanoparticles (AuNPs) along the phase boundaries of multicomponent SLBs (previously characterised by neutron reflectivity), obtained from synthetic vesicles containing both an Ld and an Lo phase. The quantitative localisation and morphometry of AuNPs adsorbed on the SLB reveal important information on their interaction with the lipid matrix and directly prove the already theorised differential NPs-lipid interaction at the phase boundaries. The presented results could help the development of future NP-based applications, involving NPs adsorption on membranes with nanoscale phase segregations.
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Affiliation(s)
- Andrea Ridolfi
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Florence, Italy.,Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Bologna, Italy.,Dipartimento di Chimica 'Ugo Schiff', Università degli Studi di Firenze, Florence, Italy
| | - Lucrezia Caselli
- Dipartimento di Chimica 'Ugo Schiff', Università degli Studi di Firenze, Florence, Italy
| | - Costanza Montis
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Florence, Italy.,Dipartimento di Chimica 'Ugo Schiff', Università degli Studi di Firenze, Florence, Italy
| | - Gaetano Mangiapia
- GEMS am Heinz Maier-Leibnitz Zentrum (MLZ), Helmholtz-Zentrum Geesthacht GmbH, Garching, Germany
| | - Debora Berti
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Florence, Italy.,Dipartimento di Chimica 'Ugo Schiff', Università degli Studi di Firenze, Florence, Italy
| | - Marco Brucale
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Florence, Italy.,Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Bologna, Italy
| | - Francesco Valle
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Florence, Italy.,Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Bologna, Italy
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Montis C, Salvatore A, Valle F, Paolini L, Carlà F, Bergese P, Berti D. Biogenic supported lipid bilayers as a tool to investigate nano-bio interfaces. J Colloid Interface Sci 2020; 570:340-349. [DOI: 10.1016/j.jcis.2020.03.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 12/14/2022]
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Saracino E, Maiolo L, Polese D, Semprini M, Borrachero-Conejo AI, Gasparetto J, Murtagh S, Sola M, Tomasi L, Valle F, Pazzini L, Formaggio F, Chiappalone M, Hussain S, Caprini M, Muccini M, Ambrosio L, Fortunato G, Zamboni R, Convertino A, Benfenati V. A Glial-Silicon Nanowire Electrode Junction Enabling Differentiation and Noninvasive Recording of Slow Oscillations from Primary Astrocytes. ACTA ACUST UNITED AC 2020; 4:e1900264. [PMID: 32293156 DOI: 10.1002/adbi.201900264] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/22/2020] [Indexed: 01/02/2023]
Abstract
The correct human brain function is dependent on the activity of non-neuronal cells called astrocytes. The bioelectrical properties of astrocytes in vitro do not closely resemble those displayed in vivo and the former are incapable of generating action potential; thus, reliable approaches in vitro for noninvasive electrophysiological recording of astrocytes remain challenging for biomedical engineering. Here it is found that primary astrocytes grown on a device formed by a forest of randomly oriented gold coated-silicon nanowires, resembling the complex structural and functional phenotype expressed by astrocytes in vivo. The device enables noninvasive extracellular recording of the slow-frequency oscillations generated by differentiated astrocytes, while flat electrodes failed on recording signals from undifferentiated cells. Pathophysiological concentrations of extracellular potassium, occurring during epilepsy and spreading depression, modulate the power of slow oscillations generated by astrocytes. A reliable approach to study the role of astrocytes function in brain physiology and pathologies is presented.
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Affiliation(s)
- Emanuela Saracino
- Consiglio Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività, via Gobetti 101, 40129, Bologna, Italy
| | - Luca Maiolo
- Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e i Microsistemi, Via del Fosso del Cavaliere n.100, 00133, Roma, Italy
| | - Davide Polese
- Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e i Microsistemi, Via del Fosso del Cavaliere n.100, 00133, Roma, Italy
| | - M Semprini
- Fondazione Istituto Italiano di Tecnologia (IIT), Rehab Technologies IIT-INAIL Lab, Via Morego 30, 16163, Genova, Italy
| | - Ana Isabel Borrachero-Conejo
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, via Gobetti 101, 40129, Bologna, Italy
| | - Jacopo Gasparetto
- Consiglio Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività, via Gobetti 101, 40129, Bologna, Italy
| | - Stefano Murtagh
- Consiglio Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività, via Gobetti 101, 40129, Bologna, Italy
| | - Margherita Sola
- Consiglio Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività, via Gobetti 101, 40129, Bologna, Italy
| | - Lorenzo Tomasi
- Consiglio Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività, via Gobetti 101, 40129, Bologna, Italy
| | - Francesco Valle
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, via Gobetti 101, 40129, Bologna, Italy
| | - Luca Pazzini
- Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e i Microsistemi, Via del Fosso del Cavaliere n.100, 00133, Roma, Italy
| | - Francesco Formaggio
- Università di Bologna, Dipartimento di Farmacia e Biotecnologie FaBit, University of Bologna, via San Donato 19/2, 40127, Bologna, Italy
| | - Michela Chiappalone
- Fondazione Istituto Italiano di Tecnologia (IIT), Rehab Technologies IIT-INAIL Lab, Via Morego 30, 16163, Genova, Italy
| | - Saber Hussain
- US Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, 45433, USA
| | - Marco Caprini
- Università di Bologna, Dipartimento di Farmacia e Biotecnologie FaBit, University of Bologna, via San Donato 19/2, 40127, Bologna, Italy
| | - Michele Muccini
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, via Gobetti 101, 40129, Bologna, Italy
| | - Luigi Ambrosio
- Istituto per i Polimeri Composti e i Biomateriali, Viale J.F. Kennedy 54, Mostra d'Oltremare, Pad 20, 80125, Napoli, Italy
| | - Guglielmo Fortunato
- Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e i Microsistemi, Via del Fosso del Cavaliere n.100, 00133, Roma, Italy
| | - Roberto Zamboni
- Consiglio Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività, via Gobetti 101, 40129, Bologna, Italy
| | - Annalisa Convertino
- Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e i Microsistemi, Via del Fosso del Cavaliere n.100, 00133, Roma, Italy
| | - Valentina Benfenati
- Consiglio Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività, via Gobetti 101, 40129, Bologna, Italy
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Giuri D, Barbalinardo M, Zanna N, Paci P, Montalti M, Cavallini M, Valle F, Calvaresi M, Tomasini C. Tuning Mechanical Properties of Pseudopeptide Supramolecular Hydrogels by Graphene Doping. Molecules 2019; 24:E4345. [PMID: 31795090 PMCID: PMC6930602 DOI: 10.3390/molecules24234345] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/10/2019] [Accepted: 11/26/2019] [Indexed: 12/20/2022] Open
Abstract
Supramolecular hydrogels, obtained from small organic molecules, may be advantageous over polymeric ones for several applications, because these materials have some peculiar properties that differentiate them from the traditional polymeric hydrogels, such as elasticity, thixotropy, self-healing propensity, and biocompatibility. We report here the preparation of strong supramolecular pseudopeptide-based hydrogels that owe their strength to the introduction of graphene in the gelling mixture. These materials proved to be strong, stable, thermoreversible and elastic. The concentration of the gelator, the degree of graphene doping, and the nature of the trigger are crucial to get hydrogels with the desired properties, where a high storage modulus coexists with a good thixotropic behavior. Finally, NIH-3T3 cells were used to evaluate the cell response to the presence of the most promising hydrogels. The hydrogels biocompatibility remains good, if a small degree of graphene doping is introduced.
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Affiliation(s)
- Demetra Giuri
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi, 240126 Bologna, Italy; (D.G.); (N.Z.); (P.P.); (M.M.)
| | - Marianna Barbalinardo
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, (ISMN-CNR), Via P. Gobetti 101, 40129 Bologna, Italy; (M.B.); (M.C.); (F.V.)
| | - Nicola Zanna
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi, 240126 Bologna, Italy; (D.G.); (N.Z.); (P.P.); (M.M.)
| | - Paolo Paci
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi, 240126 Bologna, Italy; (D.G.); (N.Z.); (P.P.); (M.M.)
| | - Marco Montalti
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi, 240126 Bologna, Italy; (D.G.); (N.Z.); (P.P.); (M.M.)
| | - Massimiliano Cavallini
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, (ISMN-CNR), Via P. Gobetti 101, 40129 Bologna, Italy; (M.B.); (M.C.); (F.V.)
| | - Francesco Valle
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, (ISMN-CNR), Via P. Gobetti 101, 40129 Bologna, Italy; (M.B.); (M.C.); (F.V.)
| | - Matteo Calvaresi
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi, 240126 Bologna, Italy; (D.G.); (N.Z.); (P.P.); (M.M.)
| | - Claudia Tomasini
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi, 240126 Bologna, Italy; (D.G.); (N.Z.); (P.P.); (M.M.)
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Barbalinardo M, Di Giosia M, Polishchuk I, Magnabosco G, Fermani S, Biscarini F, Calvaresi M, Zerbetto F, Pellegrini G, Falini G, Pokroy B, Valle F. Retinoic acid/calcite micro-carriers inserted in fibrin scaffolds modulate neuronal cell differentiation. J Mater Chem B 2019; 7:5808-5813. [PMID: 31486471 DOI: 10.1039/c9tb01148j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The controlled release of cell differentiating agents is crucial in many aspects of regenerative medicine. Here we propose the use of hybrid calcite single crystals as micro-carriers for the controlled and localized release of retinoic acid, which is entrapped within the crystalline lattice. The release of retinoic acid occurs only in the proximity of stem cells, upon dissolution of the calcite hybrid crystals that are dispersed in the fibrin scaffold. These hybrid crystals provide a sustained dosage of the entrapped agent. The environment provided by this composite scaffold enables differentiation towards neuronal cells that form a three-dimensional neuronal network.
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Affiliation(s)
- Marianna Barbalinardo
- Consiglio Nazionale delle Ricerche (CNR), Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Matteo Di Giosia
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Iryna Polishchuk
- Department of Material Sciences and Engineering and the Russel Berrie Nanotechnology Institute Technion-Israel Institute of Technology, 32000 Haifa, Israel
| | - Giulia Magnabosco
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Simona Fermani
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Fabio Biscarini
- Dipartimento di Scienze della vita, Università di Modena e Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Matteo Calvaresi
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Francesco Zerbetto
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Graziella Pellegrini
- Center for Regenerative Medicine ''Stefano Ferrari'', University of Modena and Reggio Emilia, Modena, Italy and Holostem Terapie Avanzate, Modena, Italy
| | - Giuseppe Falini
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Boaz Pokroy
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Francesco Valle
- Consiglio Nazionale delle Ricerche (CNR), Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), Via P. Gobetti 101, 40129 Bologna, Italy. and Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), ISMN-CNR, 40129 Bologna, Italy
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Affiliation(s)
- Devis Montroni
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum—Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy
| | - Bartosz Marzec
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, U.K
| | - Francesco Valle
- National Research Council (CNR), Institute for Nanostructured Materials (ISMN), Via P. Gobetti 101, 40129 Bologna, Italy
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), ISMN-CNR, 40129 Bologna, Italy
| | - Fabio Nudelman
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, U.K
| | - Giuseppe Falini
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum—Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy
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Valle F, Esfandiari S, Wright S, Udell J, Overgaard C, Mak S. Feasibility of Exercise Hemodynamic Evaluation in the Clinical Cardiac Catheterization Laboratory. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.1249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Giuri D, Barbalinardo M, Sotgiu G, Zamboni R, Nocchetti M, Donnadio A, Corticelli F, Valle F, Gennari CGM, Selmin F, Posati T, Aluigi A. Nano-hybrid electrospun non-woven mats made of wool keratin and hydrotalcites as potential bio-active wound dressings. Nanoscale 2019; 11:6422-6430. [PMID: 30888347 DOI: 10.1039/c8nr10114k] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, nano-hybrid electrospun non-woven mats made of wool keratin combined with diclofenac loaded hydrotalcites (HTD) were prepared and characterized as potential drug delivery systems and scaffolds for fibroblast cell growth. Nano-hybrid electrospun non-woven mats showed a good adaptability to wet skin, effortlessly conforming to the three-dimensional topography of the tissue. Nanosized HTD exercised an overall reinforcing action on the electrospun non-woven mats since the nanohybrid samples displayed a reduced swelling ratio and a slower degradation profile compared to keratin-based nanofiber non-woven mats containing free diclofenac, without negative effects on drug release. The cell viability test indicated a decreased toxicity of the drug when loaded into nanofibers and confirmed the biocompatibility of keratin/HTD electrospun non-woven mats; moreover, a controlled diclofenac release within the first 24 hours does not compromise the fibroblast cell growth in a significant manner.
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Affiliation(s)
- Demetra Giuri
- Institute of Organic Synthesis and Photoreactivity, National Research Council, via P. Gobetti 101, 40129 Bologna, Italy.
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Bystrenova E, Bednarikova Z, Barbalinardo M, Albonetti C, Valle F, Gazova Z. Amyloid fragments and their toxicity on neural cells. Regen Biomater 2019; 6:121-127. [PMID: 30967967 PMCID: PMC6446995 DOI: 10.1093/rb/rbz007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 12/04/2018] [Accepted: 01/14/2019] [Indexed: 11/13/2022] Open
Abstract
The formation of amyloid fibrils from soluble proteins is a common form of self-assembly phenomenon that has fundamental connections with biological functions and human diseases. Lysozyme was converted from its soluble native state into highly organized amyloid fibrils. Ultrasonic treatment was used to break amyloid fibrils to fibrillar fragments–seeds. Atomic force microscopy and fluorescence microscopy was employed to characterize the morphology of the amyloid assemblies and neural cells–amyloid complexes. Our results demonstrate that prefibrillar intermediated and their mixture with proteins exhibit toxicity, although native proteins and fibrils appear to have no effect on number of cells. Our findings confirm that innocuous hen lysozyme can be engineered to produce both cytotoxic fibrillar fragments and non-toxic mature amyloid fibrils. Our work further strengthens the claim that amyloid conformation, and not the identity of the protein, is key to cellular toxicity and the underlying specific cell death mechanism.
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Affiliation(s)
- Eva Bystrenova
- Institute of Nanostructured Materials I.S.M.N - C.N.R., via Gobetti, 101, Bologna, Italy
| | - Zuzana Bednarikova
- Department of Biophysics, Institute of Experimental Physics SAS, Watsonova 47, Kosice, Slovakia
| | - Marianna Barbalinardo
- Institute of Nanostructured Materials I.S.M.N - C.N.R., via Gobetti, 101, Bologna, Italy
| | - Cristiano Albonetti
- Institute of Nanostructured Materials I.S.M.N - C.N.R., via Gobetti, 101, Bologna, Italy
| | - Francesco Valle
- Institute of Nanostructured Materials I.S.M.N - C.N.R., via Gobetti, 101, Bologna, Italy
| | - Zuzana Gazova
- Department of Biophysics, Institute of Experimental Physics SAS, Watsonova 47, Kosice, Slovakia
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Di Giosia M, Nicolini F, Ferrazzano L, Soldà A, Valle F, Cantelli A, Marforio TD, Bottoni A, Zerbetto F, Montalti M, Rapino S, Tolomelli A, Calvaresi M. Stable and Biocompatible Monodispersion of C 60 in Water by Peptides. Bioconjug Chem 2019; 30:808-814. [PMID: 30616344 DOI: 10.1021/acs.bioconjchem.8b00916] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The lack of solubility in water and the formation of aggregates hamper many opportunities for technological exploitation of C60. Here, different peptides were designed and synthesized with the aim of monomolecular dispersion of C60 in water. Phenylalanines were used as recognizing moieties, able to interact with C60 through π-π stacking, while a varying number of glycines were used as spacers, to connect the two terminal phenylalanines. The best performance in the dispersion of C60 was obtained with the FGGGF peptidic nanotweezer at a pH of 12. A full characterization of this adduct was carried out. The peptides disperse C60 in water with high efficiency, and the solutions are stable for months both in pure water and in physiological environments. NMR measurements demonstrated the ability of the peptides to interact with C60. AFM measurements showed that C60 is monodispersed. Electrospray ionization mass spectrometry determined a stoichiometry of C60@(FGGGF)4. Molecular dynamics simulations showed that the peptides assemble around the C60 cage, like a candy in its paper wrapper, creating a supramolecular host able to accept C60 in the cavity. The peptide-wrapped C60 is fully biocompatible and the C60 "dark toxicity" is eliminated. C60@(FGGGF)4 shows visible light-induced reactive oxygen species (ROS) generation at physiological saline concentrations and reduction of the HeLa cell viability in response to visible light irradiation.
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Affiliation(s)
- Matteo Di Giosia
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Federica Nicolini
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Lucia Ferrazzano
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Alice Soldà
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Francesco Valle
- Istituto per lo Studio dei Materiali Nanostrutturati, ISMN-CNR , via Gobetti 101 , 40129 Bologna , Italy
| | - Andrea Cantelli
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Tainah Dorina Marforio
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Andrea Bottoni
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Francesco Zerbetto
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Marco Montalti
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Stefania Rapino
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Alessandra Tolomelli
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Matteo Calvaresi
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
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Esfandiari S, Granton D, Azevedo L, Valle F, Mak S. PULMONARY ARTERY WEDGE PRESSURE AT REST AND DURING EXERCISE IN HEALTHY ADULTS: A SYSTEMATIC REVIEW AND META-ANALYSIS. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Wright S, Valle F, Groves L, Esfandiari S, Granton J, Mak S. ABNORMAL RIGHT VENTRICULAR - PULMONARY VASCULAR COUPLING AT REST AND EXERCISE IN PATIENTS WITH DYSPNEA OF UNKNOWN ORIGIN AND/OR SUSPECTED PULMONARY HYPERTENSION. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Esfandiari S, Wright S, Valle F, Mak S. THE LEFT ATRIAL PRESSURE-VOLUME RELATIONSHIP IN HEALTHY OLDER MEN AND WOMEN. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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40
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Parker J, Valle F, Cherney D. RENAL OXYGEN CONSUMPTION IN CHRONIC HEART FAILURE. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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41
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Di Giosia M, Bomans PHH, Bottoni A, Cantelli A, Falini G, Franchi P, Guarracino G, Friedrich H, Lucarini M, Paolucci F, Rapino S, Sommerdijk NAJM, Soldà A, Valle F, Zerbetto F, Calvaresi M. Proteins as supramolecular hosts for C 60: a true solution of C 60 in water. Nanoscale 2018; 10:9908-9916. [PMID: 29790558 DOI: 10.1039/c8nr02220h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Hybrid systems have great potential for a wide range of applications in chemistry, physics and materials science. Conjugation of a biosystem to a molecular material can tune the properties of the components or give rise to new properties. As a workhorse, here we take a C60@lysozyme hybrid. We show that lysozyme recognizes and disperses fullerene in water. AFM, cryo-TEM and high resolution X-ray powder diffraction show that the C60 dispersion is monomolecular. The adduct is biocompatible, stable in physiological and technologically-relevant environments, and easy to store. Hybridization with lysozyme preserves the electrochemical properties of C60. EPR spin-trapping experiments show that the C60@lysozyme hybrid produces ROS following both type I and type II mechanisms. Due to the shielding effect of proteins, the adduct generates significant amounts of 1O2 also in aqueous solution. In the case of type I mechanism, the protein residues provide electrons and the hybrid does not require addition of external electron donors. The preparation process and the properties of C60@lysozyme are general and can be expected to be similar to other C60@protein systems. It is envisaged that the properties of the C60@protein hybrids will pave the way for a host of applications in nanomedicine, nanotechnology, and photocatalysis.
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Affiliation(s)
- Matteo Di Giosia
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum - Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
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Di Giosia M, Valle F, Cantelli A, Bottoni A, Zerbetto F, Calvaresi M. C 60 Bioconjugation with Proteins: Towards a Palette of Carriers for All pH Ranges. Materials (Basel) 2018; 11:E691. [PMID: 29702620 PMCID: PMC5978068 DOI: 10.3390/ma11050691] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/20/2018] [Accepted: 04/23/2018] [Indexed: 12/28/2022]
Abstract
The high hydrophobicity of fullerenes and the resulting formation of aggregates in aqueous solutions hamper the possibility of their exploitation in many technological applications. Noncovalent bioconjugation of fullerenes with proteins is an emerging approach for their dispersion in aqueous media. Contrary to covalent functionalization, bioconjugation preserves the physicochemical properties of the carbon nanostructure. The unique photophysical and photochemical properties of fullerenes are then fully accessible for applications in nanomedicine, sensoristic, biocatalysis and materials science fields. However, proteins are not universal carriers. Their stability depends on the biological conditions for which they have evolved. Here we present two model systems based on pepsin and trypsin. These proteins have opposite net charge at physiological pH. They recognize and disperse C60 in water. UV-Vis spectroscopy, zeta-potential and atomic force microscopy analysis demonstrates that the hybrids are well dispersed and stable in a wide range of pH’s and ionic strengths. A previously validated modelling approach identifies the protein-binding pocket involved in the interaction with C60. Computational predictions, combined with experimental investigations, provide powerful tools to design tailor-made C60@proteins bioconjugates for specific applications.
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Affiliation(s)
- Matteo Di Giosia
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
| | - Francesco Valle
- Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Consiglio Nazionale delle Ricerche, via P. Gobetti 101, 40129 Bologna, Italy.
| | - Andrea Cantelli
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
| | - Andrea Bottoni
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
| | - Francesco Zerbetto
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
| | - Matteo Calvaresi
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
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Montis C, Busatto S, Valle F, Zendrini A, Salvatore A, Gerelli Y, Berti D, Bergese P. Biogenic Supported Lipid Bilayers from Nanosized Extracellular Vesicles. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201700200] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Costanza Montis
- Department of Chemistry; University of Florence and CSGI; via della Lastruccia 3 50019 Florence Italy
| | - Sara Busatto
- Department of Molecular and Translational Medicine; University of Brescia; CSGI and INSTM, viale Europa 11 25123 Brescia Italy
| | | | - Andrea Zendrini
- Department of Molecular and Translational Medicine; University of Brescia; CSGI and INSTM, viale Europa 11 25123 Brescia Italy
| | - Annalisa Salvatore
- Department of Chemistry; University of Florence and CSGI; via della Lastruccia 3 50019 Florence Italy
| | - Yuri Gerelli
- Institut Laue-Langevin; 71 Avenue des Martyrs BP 156 F-38000 Grenoble France
| | - Debora Berti
- Department of Chemistry; University of Florence and CSGI; via della Lastruccia 3 50019 Florence Italy
| | - Paolo Bergese
- Department of Molecular and Translational Medicine; University of Brescia; CSGI and INSTM, viale Europa 11 25123 Brescia Italy
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Montroni D, Valle F, Rapino S, Fermani S, Calvaresi M, Harrington MJ, Falini G. Functional Biocompatible Matrices from Mussel Byssus Waste. ACS Biomater Sci Eng 2017; 4:57-65. [DOI: 10.1021/acsbiomaterials.7b00743] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Devis Montroni
- Dipartimento
di Chimica “Giacomo Ciamician”, Alma Mater Studiorum Università di Bologna, via Selmi 2, 40126 Bologna, Italy
| | - Francesco Valle
- National
Research Council (CNR), Institute for Nanostructured Materials (ISMN), Via
P. Gobetti 101, 40129 Bologna, Italy
| | - Stefania Rapino
- Dipartimento
di Chimica “Giacomo Ciamician”, Alma Mater Studiorum Università di Bologna, via Selmi 2, 40126 Bologna, Italy
| | - Simona Fermani
- Dipartimento
di Chimica “Giacomo Ciamician”, Alma Mater Studiorum Università di Bologna, via Selmi 2, 40126 Bologna, Italy
| | - Matteo Calvaresi
- Dipartimento
di Chimica “Giacomo Ciamician”, Alma Mater Studiorum Università di Bologna, via Selmi 2, 40126 Bologna, Italy
| | - Matthew J. Harrington
- Department
of Biomaterials, Max-Planck Institute for Colloids and Interfaces, Research Campus Golm, Am Mühlenberg 1, Potsdam 14424, Germany
| | - Giuseppe Falini
- Dipartimento
di Chimica “Giacomo Ciamician”, Alma Mater Studiorum Università di Bologna, via Selmi 2, 40126 Bologna, Italy
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Lindsay E, Renyi R, Wilkie P, Valle F, White W, Maida V, Edwards H, Foster D. Patient-centred care: a call to action for wound management. J Wound Care 2017; 26:662-677. [DOI: 10.12968/jowc.2017.26.11.662] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- E. Lindsay
- Life President of the Lindsay Leg Club Foundation and Chair of the World Union of Wound Healing Societies (WUWHS) International Panel on Patient Advocacy, The Lindsay Leg Club Foundation, Ipswich, PO Box 689, IP1 9BN
| | - R. Renyi
- Communications Consultant and Chair of the Lindsay Leg Club Foundation (2014–2017), The Lindsay Leg Club Foundation, Ipswich, PO Box 689, IP1 9BN
| | - P. Wilkie
- President and Chairman, National Association for Patient Participation, UK, National Association for Patient Participation, UK
| | - F. Valle
- University of Maryland School of Nursing, Baltimore, US
| | - W. White
- Director Educator & Advanced Practice Nurse (WM), Wendy White WoundCare, New South Wales, Australia
| | - V. Maida
- Associate Professor, University of Toronto; Assistant Clinical Professor, McMaster University, Hamilton; Division of Palliative Medicine, William Osler Health System, Toronto, Canada
| | - H. Edwards
- Professor, Faculty of Health, Queensland University of Technology, Australia
| | - D. Foster
- Chair, The Lindsay Leg Club Foundation, The Lindsay Leg Club Foundation, Ipswich, PO Box 689, IP1 9BN
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Bystrenova E, Bednarikova Z, Barbalinardo M, Valle F, Gazova Z, Biscarini F. Insulin amyloid structures and their influence on neural cells. Colloids Surf B Biointerfaces 2017; 161:177-182. [PMID: 29078167 DOI: 10.1016/j.colsurfb.2017.10.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 10/16/2017] [Accepted: 10/18/2017] [Indexed: 12/26/2022]
Abstract
Peptide aggregation into oligomers and fibrillar architectures is a hallmark of severe neurodegenerative pathologies, diabetes mellitus or systemic amyloidoses. The polymorphism of amyloid forms and their distribution are both effectors that potentially modulate the disease, thus it is important to understand the molecular basis of protein amyloid disorders through the interaction of the different amyloid forms with neural cells and tissues. Here we explore the effect of amyloid fibrils on the human neuroblastoma (SH-SY5Y) cell line in vitro. We control the kinetic of fibrillization of insulin at low pH and higher temperature. We use a multiscale characterization via fluorescence microscopy and multimodal scanning probe microscopy to correlate the number of cells and their morphology, with the finer details of the insulin deposits. Our results show that insulin aggregates deposited on neuroblastoma cell cultures lead to a progressive modification and decreased number of cells that correlates with the degree of fibrillization. SPM unravels that the aggregates strongly interact with the cell membrane, forming a stiff encase that possibly leads to an increased cell membrane stiffness and deficit in the metabolic exchanges between the cells and their environment. The presence of fibrils does not affect the number of cells at 24h whereas drop down to 60% is observed after 48h of incubation.
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Affiliation(s)
- Eva Bystrenova
- C.N.R. - I.S.M.N, via Gobetti, 101, 40129, Bologna, Italy.
| | | | | | | | | | - Fabio Biscarini
- C.N.R. - I.S.M.N, via Gobetti, 101, 40129, Bologna, Italy; Life Science Dept., Università di Modena and Reggio Emilia, Via Campi 103, 41125, Modena, Italy
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Valle F, Brucale M, Chiodini S, Bystrenova E, Albonetti C. Nanoscale morphological analysis of soft matter aggregates with fractal dimension ranging from 1 to 3. Micron 2017; 100:60-72. [DOI: 10.1016/j.micron.2017.04.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 04/28/2017] [Accepted: 04/29/2017] [Indexed: 11/25/2022]
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Pirone C, Gurrieri L, Gaiba I, Adamiano A, Valle F, Trost P, Sparla F. The analysis of the different functions of starch-phosphorylating enzymes during the development of Arabidopsis thaliana plants discloses an unexpected role for the cytosolic isoform GWD2. Physiol Plant 2017; 160:447-457. [PMID: 28303594 DOI: 10.1111/ppl.12564] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 02/01/2017] [Accepted: 02/15/2017] [Indexed: 05/20/2023]
Abstract
The genome of Arabidopsis thaliana encodes three glucan, water dikinases. Glucan, water dikinase 1 (GWD1; EC 2.7.9.4) and phosphoglucan, water dikinase (PWD; EC 2.7.9.5) are chloroplastic enzymes, while glucan, water dikinase 2 (GWD2) is cytosolic. Both GWDs and PWD catalyze the addition of phosphate groups to amylopectin chains at the surface of starch granules, changing its physicochemical properties. As a result, GWD1 and PWD have a positive effect on transitory starch degradation at night. Because of its cytosolic localization, GWD2 does not have the same effect. Single T-DNA mutants of either GWD1 or PWD or GWD2 have been analyzed during the entire life cycle of A. thaliana. We report that the three dikinases are all important for proper seed development. Seeds from gwd2 mutants are shrunken, with the epidermal cells of the seed coat irregularly shaped. Moreover, gwd2 seeds contain a lower lipid to protein ratio and are impaired in germination. Similar seed phenotypes were observed in pwd and gwd1 mutants, except for the normal morphology of epidermal cells in gwd1 seed coats. The gwd1, pwd and gwd2 mutants were also very similar in growth and flowering time when grown under continuous light and all three behaved differently from wild-type plants. Besides pinpointing a novel role of GWD2 and PWD in seed development, this analysis suggests that the phenotypic features of the dikinase mutants in A. thaliana cannot be explained solely in terms of defects in leaf starch degradation at night.
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Affiliation(s)
- Claudia Pirone
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, Bologna, 40126, Italy
| | - Libero Gurrieri
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, Bologna, 40126, Italy
| | - Ivan Gaiba
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, Bologna, 40126, Italy
| | - Alessio Adamiano
- Department of Chemistry "G. Ciamician", University of Bologna, Bologna, 40126, Italy
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Faenza, 48018, Italy
| | - Francesco Valle
- Institute for the Study of Nanostructured Materials (ISNM), National Research Council (CNR), Bologna, 40129, Italy
| | - Paolo Trost
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, Bologna, 40126, Italy
| | - Francesca Sparla
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, Bologna, 40126, Italy
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Montis C, Zendrini A, Valle F, Busatto S, Paolini L, Radeghieri A, Salvatore A, Berti D, Bergese P. Size distribution of extracellular vesicles by optical correlation techniques. Colloids Surf B Biointerfaces 2017; 158:331-338. [PMID: 28711858 DOI: 10.1016/j.colsurfb.2017.06.047] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/15/2017] [Accepted: 06/28/2017] [Indexed: 01/05/2023]
Abstract
Understanding the colloidal properties of extracellular vesicles (EVs) is key to advance fundamental knowledge in this field and to develop effective EV-based diagnostics, therapeutics and devices. Determination of size distribution and of colloidal stability of purified EVs resuspended in buffered media is a complex and challenging issue - because of the wide range of EV diameters (from 30 to 2000nm), concentrations of interest and membrane properties, and the possible presence of co-isolated contaminants with similar size and densities, such as protein aggregates and fat globules - which is still waiting to be fully addressed. We report here a fully detailed protocol for accurate and robust determination of the size distribution and stability of EV samples which leverages a dedicated combination of Fluorescence Correlation Spectroscopy (FCS) and Dynamic Light Scattering (DLS). The theoretical background, critical experimental steps and data analysis procedures are thoroughly presented and finally illustrated through the representative case study of EV formulations obtained from culture media of B16 melanoma cells, a murine tumor cell line used as a model for human skin cancers.
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Affiliation(s)
- Costanza Montis
- Dipartimento di Chimica "Ugo Schiff" e CSGI, Università degli Studi di Firenze, via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Andrea Zendrini
- Dipartimento di Medicina Molecolare e Traslazionale e CSGI, Università degli Studi di Brescia, viale Europa 11, 25123 Brescia, Italy
| | - Francesco Valle
- Istituto per lo Studio dei Materiali Nanostrutturati - ISMN-CNR e CSGI, via Gobetti 101, 40129 Bologna, Italy
| | - Sara Busatto
- Dipartimento di Medicina Molecolare e Traslazionale e CSGI, Università degli Studi di Brescia, viale Europa 11, 25123 Brescia, Italy
| | - Lucia Paolini
- Dipartimento di Medicina Molecolare e Traslazionale e CSGI, Università degli Studi di Brescia, viale Europa 11, 25123 Brescia, Italy
| | - Annalisa Radeghieri
- Dipartimento di Medicina Molecolare e Traslazionale e CSGI, Università degli Studi di Brescia, viale Europa 11, 25123 Brescia, Italy
| | - Annalisa Salvatore
- Dipartimento di Chimica "Ugo Schiff" e CSGI, Università degli Studi di Firenze, via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Debora Berti
- Dipartimento di Chimica "Ugo Schiff" e CSGI, Università degli Studi di Firenze, via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy.
| | - Paolo Bergese
- Dipartimento di Medicina Molecolare e Traslazionale e CSGI, Università degli Studi di Brescia, viale Europa 11, 25123 Brescia, Italy.
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Japaridze A, Orlandini E, Smith KB, Gmür L, Valle F, Micheletti C, Dietler G. Spatial confinement induces hairpins in nicked circular DNA. Nucleic Acids Res 2017; 45:4905-4914. [PMID: 28201616 PMCID: PMC5605231 DOI: 10.1093/nar/gkx098] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 01/25/2017] [Accepted: 02/06/2017] [Indexed: 01/05/2023] Open
Abstract
In living cells, DNA is highly confined in space with the help of condensing agents, DNA binding proteins and high levels of supercoiling. Due to challenges associated with experimentally studying DNA under confinement, little is known about the impact of spatial confinement on the local structure of the DNA. Here, we have used well characterized slits of different sizes to collect high resolution atomic force microscopy images of confined circular DNA with the aim of assessing the impact of the spatial confinement on global and local conformational properties of DNA. Our findings, supported by numerical simulations, indicate that confinement imposes a large mechanical stress on the DNA as evidenced by a pronounced anisotropy and tangent-tangent correlation function with respect to non-constrained DNA. For the strongest confinement we observed nanometer sized hairpins and interwound structures associated with the nicked sites in the DNA sequence. Based on these findings, we propose that spatial DNA confinement in vivo can promote the formation of localized defects at mechanically weak sites that could be co-opted for biological regulatory functions.
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Affiliation(s)
| | - Enzo Orlandini
- Dipartimento di Fisica e Astronomia and Sezione INFN, Universita di Padova, Via Marzolo 8, 35131 Padova, Italy
| | | | - Lucas Gmür
- Laboratory of Physics of Living Matter, EPFL, 1015 Lausanne, Switzerland
| | - Francesco Valle
- Consiglio Nazionale delle Ricerche (CNR), Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), Via P.Gobetti 101, Bologna 40129, Italy
| | - Cristian Micheletti
- SISSA - Scuola Internazionale Superiore di Studi Avanzati and CNR-IOM Democritos, Via Bonomea 265, 34136 Trieste, Italy
| | - Giovanni Dietler
- Laboratory of Physics of Living Matter, EPFL, 1015 Lausanne, Switzerland
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