1
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Paun RA, Jurchuk S, Tabrizian M. A landscape of recent advances in lipid nanoparticles and their translational potential for the treatment of solid tumors. Bioeng Transl Med 2024; 9:e10601. [PMID: 38435821 PMCID: PMC10905562 DOI: 10.1002/btm2.10601] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/30/2023] [Accepted: 09/05/2023] [Indexed: 03/05/2024] Open
Abstract
Lipid nanoparticles (LNPs) are biocompatible drug delivery systems that have found numerous applications in medicine. Their versatile nature enables the encapsulation and targeting of various types of medically relevant molecular cargo, including oligonucleotides, proteins, and small molecules for the treatment of diseases, such as cancer. Cancers that form solid tumors are particularly relevant for LNP-based therapeutics due to the enhanced permeation and retention effect that allows nanoparticles to accumulate within the tumor tissue. Additionally, LNPs can be formulated for both locoregional and systemic delivery depending on the tumor type and stage. To date, LNPs have been used extensively in the clinic to reduce systemic toxicity and improve outcomes in cancer patients by encapsulating chemotherapeutic drugs. Next-generation lipid nanoparticles are currently being developed to expand their use in gene therapy and immunotherapy, as well as to enable the co-encapsulation of multiple drugs in a single system. Other developments include the design of targeted LNPs to specific cells and tissues, and triggerable release systems to control cargo delivery at the tumor site. This review paper highlights recent developments in LNP drug delivery formulations and focuses on the treatment of solid tumors, while also discussing some of their current translational limitations and potential opportunities in the field.
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Affiliation(s)
- Radu A. Paun
- Department of Biomedical Engineering, Faculty of Medicine and Health SciencesMcGill UniversityMontrealQuebecCanada
| | - Sarah Jurchuk
- Department of Biomedical Engineering, Faculty of Medicine and Health SciencesMcGill UniversityMontrealQuebecCanada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine and Health SciencesMcGill UniversityMontrealQuebecCanada
- Faculty of Dentistry and Oral Health SciencesMcGill UniversityMontrealQuebecCanada
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2
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Porter JM, Yitayew M, Tabrizian M. Renewable Human Cell Model for Type 1 Diabetes Research: EndoC- βH5/HUVEC Coculture Spheroids. J Diabetes Res 2023; 2023:6610007. [PMID: 38162632 PMCID: PMC10757655 DOI: 10.1155/2023/6610007] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/20/2023] [Accepted: 12/09/2023] [Indexed: 01/03/2024] Open
Abstract
In vitro drug screening for type 1 diabetes therapies has largely been conducted on human organ donor islets for proof of efficacy. While native islets are the ultimate target of these drugs (either in situ or for transplantation), significant benefit can be difficult to ascertain due to the highly heterogeneous nature of individual donors and the overall scarcity of human islets for research. We present an in vitro coculture model based on immortalized insulin-producing beta-cell lines with human endothelial cells in 3D spheroids that aims to recapitulate the islet morphology in an effort towards developing a standardized cell model for in vitro diabetes research. Human insulin-producing immortalized EndoC-βH5 cells are cocultured with human endothelial cells in varying ratios to evaluate 3D cell culture models for type 1 diabetes research. Insulin secretion, metabolic activity, live cell fluorescence staining, and gene expression assays were used to compare the viability and functionality of spheroids composed of 100% beta-cells, 1 : 1 beta-cell/endothelial, and 1 : 3 beta-cell/endothelial. Monoculture and βH5/HUVEC cocultures formed compact spheroids within 7 days, with average diameter ~140 μm. This pilot study indicated that stimulated insulin release from 0 to 20 mM glucose increased from ~8-fold for monoculture and 1 : 1 coculture spheroids to over 20-fold for 1 : 3 EndoC-βH5/HUVEC spheroids. Metabolic activity was also ~12% higher in the 1 : 3 EndoC-βH5/HUVEC group compared to other groups. Stimulating monoculture beta-cell spheroids with 20 mM glucose +1 μg/mL glycine-modified INGAP-P increased the insulin stimulation index ~2-fold compared to glucose alone. Considering their availability and consistent phenotype, EndoC-βH5-based spheroids present a useful 3D cell model for in vitro testing and drug screening applications.
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Affiliation(s)
- James M. Porter
- Department of Biological and Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada H3A 0G4
| | - Michael Yitayew
- Department of Biological and Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada H3A 0G4
| | - Maryam Tabrizian
- Department of Biological and Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada H3A 0G4
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC, Canada H3A 1G1
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3
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Rothpan M, Chandra Teja Dadi N, McKay G, Tanzer M, Nguyen D, Hart A, Tabrizian M. Titanium-Dioxide-Nanoparticle-Embedded Polyelectrolyte Multilayer as an Osteoconductive and Antimicrobial Surface Coating. Materials (Basel) 2023; 16:7026. [PMID: 37959623 PMCID: PMC10649639 DOI: 10.3390/ma16217026] [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] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 10/27/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023]
Abstract
Bioactive surface coatings have retained the attention of researchers and physicians due to their versatility and range of applications in orthopedics, particularly in infection prevention. Antibacterial metal nanoparticles (mNPs) are a promising therapeutic, with vast application opportunities on orthopedic implants. The current research aimed to construct a polyelectrolyte multilayer on a highly porous titanium implant using alternating thin film coatings of chitosan and alginate via the layer-by-layer (LbL) self-assembly technique, along with the incorporation of silver nanoparticles (AgNPs) or titanium dioxide nanoparticles (TiO2NPs), for antibacterial and osteoconductive activity. These mNPs were characterized for their physicochemical properties using quartz crystal microgravimetry with a dissipation system, nanoparticle tracking analysis, scanning electron microscopy, and atomic force microscopy. Their cytotoxicity and osteogenic differentiation capabilities were assessed using AlamarBlue and alkaline phosphatase (ALP) activity assays, respectively. The antibiofilm efficacy of the mNPs was tested against Staphylococcus aureus. The LbL polyelectrolyte coating was successfully applied to the porous titanium substrate. A dose-dependent relationship between nanoparticle concentration and ALP as well as antibacterial effects was observed. TiO2NP samples were also less cytotoxic than their AgNP counterparts, although similarly antimicrobial. Together, these data serve as a proof-of-concept for a novel coating approach for orthopedic implants with antimicrobial and osteoconductive properties.
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Affiliation(s)
- Matthew Rothpan
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3A 2B6, Canada;
| | - Nitin Chandra Teja Dadi
- Jo Miller Orthopaedic Research Laboratory, Division of Orthopaedic Surgery, McGill University, Montreal, QC H3G 1A4, Canada; (N.C.T.D.); (M.T.)
| | - Geoffrey McKay
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (G.M.); (D.N.)
| | - Michael Tanzer
- Jo Miller Orthopaedic Research Laboratory, Division of Orthopaedic Surgery, McGill University, Montreal, QC H3G 1A4, Canada; (N.C.T.D.); (M.T.)
| | - Dao Nguyen
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (G.M.); (D.N.)
- Department of Microbiology and Immunology, McGill University, Montreal, QC H3A OG4, Canada
- Department of Medicine, McGill University, Montreal, QC H4A 3J1, Canada
| | - Adam Hart
- Jo Miller Orthopaedic Research Laboratory, Division of Orthopaedic Surgery, McGill University, Montreal, QC H3G 1A4, Canada; (N.C.T.D.); (M.T.)
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3A 2B6, Canada;
- Faculty of Dentistry and Oral Health Sciences, McGill University, 3640 Rue University, Montreal, QC H3A 0C7, Canada
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4
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Watcharajittanont N, Tabrizian M, Ekarattanawong S, Meesane J. Bone-mimicking scaffold based on silk fibroin incorporated with hydroxyapatite and titanium oxide as enhanced osteo-conductive material for bone tissue formation: fabrication, characterization, properties, and in vitrotesting. Biomed Mater 2023; 18:065007. [PMID: 37647902 DOI: 10.1088/1748-605x/acf542] [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: 04/07/2023] [Accepted: 08/30/2023] [Indexed: 09/01/2023]
Abstract
Bone-mimicking scaffolds based on silk fibroin (SF) mixed with hydroxyapatite nanoparticles (HA NPs) and titanium oxide (TiO2) nanoparticles were created as materials for bone formation. Six scaffold groups were fabricated: S1 (SF), S2 (Silk + (HA: TiO2; 100: 0)), S3 (Silk, (HA: TiO2; 70: 30)), S4 (Silk + (HA NPs: TiO2; 50: 50)), S5 (Silk + (HA: TiO2; 30: 70)), and S6 (Silk + (HA NPs: TiO2; 0:100)). Scaffolds were characterized for molecular formation, structure, and morphology by Fourier transform infrared spectroscopy, element analysis, and X-ray diffraction. They were tested for physical swelling and compressive modulus. Scaffolds were cultured with MC3T3 and testedin vitroto evaluate their biological performance. The results showed that scaffolds with HA and TiO2demonstrated molecular interaction via amide I and phosphate groups. These scaffolds had smaller pore sizes than those without HA and TiO2. They showed more swelling and higher compressive modulus than the scaffolds without HA and TiO2. They exhibited better biological performance: cell adhesion, viability, proliferation, alkaline phosphatase activity, and calcium content than the scaffolds without HA and TiO2. Their porous walls acted as templates for cell aggregation and supported synthesis of calcium secreted from cells. S3 were the most suitable scaffolds. With their enhanced osteo-conductive function, they are promising for bone augmentation for oral and maxillofacial surgery.
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Affiliation(s)
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, Canada
| | - Sophapun Ekarattanawong
- Department of Preclinical Science, Faculty of Medicine, Thammasat University, Pathumthani, Thailand
| | - Jirut Meesane
- Institute of Biomedical Engineering, Department of Biomedical Science and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
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5
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Agnes CJ, Karoichan A, Tabrizian M. The Diamond Concept Enigma: Recent Trends of Its Implementation in Cross-linked Chitosan-Based Scaffolds for Bone Tissue Engineering. ACS Appl Bio Mater 2023. [PMID: 37310896 PMCID: PMC10354806 DOI: 10.1021/acsabm.3c00108] [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] [Indexed: 06/15/2023]
Abstract
An increasing number of publications over the past ten years have focused on the development of chitosan-based cross-linked scaffolds to regenerate bone tissue. The design of biomaterials for bone tissue engineering applications relies heavily on the ideals set forth by a polytherapy approach called the "Diamond Concept". This methodology takes into consideration the mechanical environment, scaffold properties, osteogenic and angiogenic potential of cells, and benefits of osteoinductive mediator encapsulation. The following review presents a comprehensive summarization of recent trends in chitosan-based cross-linked scaffold development within the scope of the Diamond Concept, particularly for nonload-bearing bone repair. A standardized methodology for material characterization, along with assessment of in vitro and in vivo potential for bone regeneration, is presented based on approaches in the literature, and future directions of the field are discussed.
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Affiliation(s)
- Celine J Agnes
- Department of Biomedical Engineering, McGill University, Montreal, Quebec H3A 2B4, Canada
- Shriner's Hospital for Children, Montreal, Quebec H4A 0A9 Canada
| | - Antoine Karoichan
- Shriner's Hospital for Children, Montreal, Quebec H4A 0A9 Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Quebec H3A 1G1 Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, McGill University, Montreal, Quebec H3A 2B4, Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Quebec H3A 1G1 Canada
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6
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Moya-Garcia CR, Li-Jessen NYK, Tabrizian M. Chitosomes Loaded with Docetaxel as a Promising Drug Delivery System to Laryngeal Cancer Cells: An In Vitro Cytotoxic Study. Int J Mol Sci 2023; 24:9902. [PMID: 37373051 DOI: 10.3390/ijms24129902] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/03/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
Current delivery of chemotherapy, either intra-venous or intra-arterial, remains suboptimal for patients with head and neck tumors. The free form of chemotherapy drugs, such as docetaxel, has non-specific tissue targeting and poor solubility in blood that deters treatment efficacy. Upon reaching the tumors, these drugs can also be easily washed away by the interstitial fluids. Liposomes have been used as nanocarriers to enhance docetaxel bioavailability. However, they are affected by potential interstitial dislodging due to insufficient intratumoral permeability and retention capabilities. Here, we developed and characterized docetaxel-loaded anionic nanoliposomes coated with a layer of mucoadhesive chitosan (chitosomes) for the application of chemotherapy drug delivery. The anionic liposomes were 99.4 ± 1.5 nm in diameter with a zeta potential of -26 ± 2.0 mV. The chitosan coating increased the liposome size to 120 ± 2.2 nm and the surface charge to 24.8 ± 2.6 mV. Chitosome formation was confirmed via FTIR spectroscopy and mucoadhesive analysis with anionic mucin dispersions. Blank liposomes and chitosomes showed no cytotoxic effect on human laryngeal stromal and cancer cells. Chitosomes were also internalized into the cytoplasm of human laryngeal cancer cells, indicating effective nanocarrier delivery. A higher cytotoxicity (p < 0.05) of docetaxel-loaded chitosomes towards human laryngeal cancer cells was observed compared to human stromal cells and control treatments. No hemolytic effect was observed on human red blood cells after a 3 h exposure, proving the proposed intra-arterial administration. Our in vitro results supported the potential of docetaxel-loaded chitosomes for locoregional chemotherapy delivery to laryngeal cancer cells.
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Affiliation(s)
- Christian R Moya-Garcia
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, 3775 Rue University, Montreal, QC H3A 2B4, Canada
| | - Nicole Y K Li-Jessen
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, 3775 Rue University, Montreal, QC H3A 2B4, Canada
- School of Communication Sciences and Disorders, McGill University, 2001 Av. McGill College #8, Montréal, QC H3A 1G1, Canada
- Department of Otolaryngology-Head and Neck Surgery, McGill University Health Centre, 1001 Decarie Blvd., Montreal, QC H4A 3J1, Canada
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd., Montreal, QC H4A 3J1, Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, 3775 Rue University, Montreal, QC H3A 2B4, Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, 2001 Av. McGill College, Montreal, QC H3A 1G1, Canada
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7
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Rasouli R, Paun RA, Tabrizian M. Sonoprinting nanoparticles on cellular spheroids via surface acoustic waves for enhanced nanotherapeutics delivery. Lab Chip 2023; 23:2091-2105. [PMID: 36942710 DOI: 10.1039/d2lc00854h] [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: 05/05/2023]
Abstract
Nanotherapeutics, on their path to the target tissues, face numerous physicochemical hindrances that affect their therapeutic efficacy. Physical barriers become more pronounced in pathological tissues, such as solid tumors, where they limit the penetration of nanocarriers into deeper regions, thereby preventing the efficient delivery of drug cargo. To address this challenge, we introduce a novel approach that employs surface acoustic wave (SAW) technology to sonoprint and enhance the delivery of nanoparticles onto and into cell spheroids. Our SAW platform is designed to generate focused and unidirectional acoustic waves for creating vigorous acoustic streaming while promoting Bjerknes forces. The effect of SAW excitation on cell viability, as well as the accumulation and penetration of nanoparticles on human breast cancer (MCF 7) and mouse melanoma (YUMM 1.7) cell spheroids were investigated. The high frequency, low input voltage, and contact-free nature of the proposed SAW system ensured over 92% cell viability for both cell lines after SAW exposure. SAW sonoprinting enhanced the accumulation of 100 nm polystyrene particles on the periphery of the spheroids to near four-fold, while the penetration of nanoparticles into the core regions of the spheroids was improved up to three times. To demonstrate the effectiveness of our SAW platform on the efficacy of nanotherapeutics, the platform was used to deliver nanoliposomes encapsulated with the anti-cancer metal compound copper diethyldithiocarbamate (CuET) to MCF 7 and YUMM 1.7 cell spheroids. A three-fold increase in the cytotoxic activity of the drug was observed in spheroids under the effect of SAW, compared to controls. The capacity of SAW-based devices to be manufactured as minuscule wearable patches can offer highly controllable, localized, and continuous acoustic waves to enhance drug delivery efficiency to target tissues.
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Affiliation(s)
- Reza Rasouli
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada.
| | - Radu Alexandru Paun
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada.
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada.
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC, Canada
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8
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Giovanniello F, Asgari M, Breslavsky ID, Franchini G, Holzapfel GA, Tabrizian M, Amabili M. Development and mechanical characterization of decellularized scaffolds for an active aortic graft. Acta Biomater 2023; 160:59-72. [PMID: 36792047 DOI: 10.1016/j.actbio.2023.02.013] [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: 11/25/2022] [Revised: 02/02/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023]
Abstract
Decellularized porcine aortas are proposed as scaffolds for revolutionary active aortic grafts. A change in the static and dynamic mechanical properties, associated with the microstructure of elastin and collagen fibers, corresponds to alteration in the cyclic expansion and perfusion, in addition to possible graft damage. Therefore, the present study thoroughly investigates the mechanical response of the decellularized scaffolds of human and porcine origin to static and dynamic mechanical loads. The responses of the native human and porcine aortas are also compared; this is unavailable in the literature. Because the aorta is subjected to pulsatile blood pressure, dynamical responses to cyclic loads and their associated viscoelastic properties are particularly relevant for advanced graft design. In parallel, this study examines the microstructure of the decellularized aorta. The resulting data are compared to the analogous data obtained for the native human and porcine tissues. The results indicate that by using an optimized decellularization protocol - based on sodium dodecyl sulfate (SDS) and DNase - that minimizes mechanical and structural changes of the tissue, layered scaffolds with static and dynamic properties very similar to natural human aortas are obtained. In particular, a decellularized porcine aorta is non-inferior to a decellularized human aorta. STATEMENT OF SIGNIFICANCE: About 55,000 patients undergo abdominal aortic aneurysm repair annually in the USA. The currently implanted grafts present a large mechanical mismatch with the native tissue. This increases the pulsatile nature of the blood flow with negative consequences to the organ perfusion. For this reason, biomimetic and mechanically compatible grafts for aortic repair are urgently needed and they can be obtained through tissue engineering. In this study, scaffolds from porcine and human aortas are obtained from an optimized decellularization protocol. They are accurately compared to the native tissue and present the ideal static and dynamic mechanical properties for developing innovative aortic grafts.
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Affiliation(s)
| | - Meisam Asgari
- Department of Mechanical Engineering, McGill University, Montreal, Canada
| | - Ivan D Breslavsky
- Department of Mechanical Engineering, McGill University, Montreal, Canada
| | - Giulio Franchini
- Department of Mechanical Engineering, McGill University, Montreal, Canada
| | - Gerhard A Holzapfel
- Institute of Biomechanics, Graz University of Technology, Austria; Department of Structural Engineering, Norwegian University of Science and Technology, Trondheim, Norway
| | - Maryam Tabrizian
- Department of Biomedical Engineering, McGill University, Montreal, Canada; Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Canada
| | - Marco Amabili
- Department of Mechanical Engineering, McGill University, Montreal, Canada; Advanced Materials Research Center, Technology Innovation Institute (TII), Abu Dhabi, UAE.
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9
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Brown M, Zhu S, Taylor L, Tabrizian M, Li-Jessen NY. Unraveling the Relevance of Tissue-Specific Decellularized Extracellular Matrix Hydrogels for Vocal Fold Regenerative Biomaterials: A Comprehensive Proteomic and In Vitro Study. Adv Nanobiomed Res 2023; 3:2200095. [PMID: 37547672 PMCID: PMC10398787 DOI: 10.1002/anbr.202200095] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Decellularized extracellular matrix (dECM) is a promising material for tissue engineering applications. Tissue-specific dECM is often seen as a favorable material that recapitulates a native-like microenvironment for cellular remodeling. However, the minute quantity of dECM derivable from small organs like the vocal fold (VF) hampers manufacturing scalability. Small intestinal submucosa (SIS), a commercial product with proven regenerative capacity, may be a viable option for VF applications. This study aims to compare dECM hydrogels derived from SIS or VF tissue with respect to protein content and functionality using mass spectrometry-based proteomics and in vitro studies. Proteomic analysis reveals that VF and SIS dECM share 75% of core matrisome proteins. Although VF dECM proteins have greater overlap with native VF, SIS dECM shows less cross-sample variability. Following decellularization, significant reductions of soluble collagen (61%), elastin (81%), and hyaluronan (44%) are noted in VF dECM. SIS dECM contains comparable elastin and hyaluronan but 67% greater soluble collagen than VF dECM. Cells deposit more neo-collagen on SIS than VF-dECM hydrogels, whereas neo-elastin (~50 μg/scaffold) and neo-hyaluronan (~ 6 μg/scaffold) are comparable between the two hydrogels. Overall, SIS dECM possesses reasonably similar proteomic profile and regenerative capacity to VF dECM. SIS dECM is considered a promising alternative for dECM-derived biomaterials for VF regeneration.
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Affiliation(s)
- Mika Brown
- Department of Biomedical Engineering, McGill University 3655 Promenade Sir-William-Osler, Room 1003, Montreal, QC H3A 1A3, Canada
| | - Shirley Zhu
- Department of Microbiology and Immunology 2001 McGill College Ave, 8th Floor, Montreal, Quebec, H3A 1G1, Canada
| | - Lorne Taylor
- The Proteomics Platform, McGill University Health Center 1001 Decarie Boulevard Montreal Suite E01.5056 Montreal, Quebec, H4A 3J1, Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, McGill University 3655 Promenade Sir-William-Osler, Room 1003, Montreal, QC H3A 1A3, Canada
- Department of Bioengineering, McGill University 740 Avenue Dr. Penfield, Room 4300, Montreal, QC H3A 0G1, Canada
- Faculty of Dentistry, McGill University 740 Avenue Dr. Penfield, Room 4300, Montreal, QC H3A 0G1, Canada
| | - Nicole Y.K. Li-Jessen
- Department of Biomedical Engineering, McGill University 3655 Promenade Sir-William-Osler, Room 1003, Montreal, QC H3A 1A3, Canada
- School of Communication Sciences and Disorders, McGill University 2001 McGill College Ave, 8th Floor, Montreal, Quebec, H3A 1G1, Canada
- Department of Otolaryngology - Head and Neck Surgery, McGill University 2001 McGill College Ave, 8th Floor, Montreal, Quebec, H3A 1G1, Canada
- Research Institute of McGill University Health Center, McGill University 2001 McGill College Ave, 8th Floor, Montreal, Quebec, H3A 1G1, Canada
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10
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Rasouli R, Villegas KM, Tabrizian M. Acoustofluidics - changing paradigm in tissue engineering, therapeutics development, and biosensing. Lab Chip 2023; 23:1300-1338. [PMID: 36806847 DOI: 10.1039/d2lc00439a] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
For more than 70 years, acoustic waves have been used to screen, diagnose, and treat patients in hundreds of medical devices. The biocompatible nature of acoustic waves, their non-invasive and contactless operation, and their compatibility with wide visualization techniques are just a few of the many features that lead to the clinical success of sound-powered devices. The development of microelectromechanical systems and fabrication technologies in the past two decades reignited the spark of acoustics in the discovery of unique microscale bio applications. Acoustofluidics, the combination of acoustic waves and fluid mechanics in the nano and micro-realm, allowed researchers to access high-resolution and controllable manipulation and sensing tools for particle separation, isolation and enrichment, patterning of cells and bioparticles, fluid handling, and point of care biosensing strategies. This versatility and attractiveness of acoustofluidics have led to the rapid expansion of platforms and methods, making it also challenging for users to select the best acoustic technology. Depending on the setup, acoustic devices can offer a diverse level of biocompatibility, throughput, versatility, and sensitivity, where each of these considerations can become the design priority based on the application. In this paper, we aim to overview the recent advancements of acoustofluidics in the multifaceted fields of regenerative medicine, therapeutic development, and diagnosis and provide researchers with the necessary information needed to choose the best-suited acoustic technology for their application. Moreover, the effect of acoustofluidic systems on phenotypic behavior of living organisms are investigated. The review starts with a brief explanation of acoustofluidic principles, the different working mechanisms, and the advantages or challenges of commonly used platforms based on the state-of-the-art design features of acoustofluidic technologies. Finally, we present an outlook of potential trends, the areas to be explored, and the challenges that need to be overcome in developing acoustofluidic platforms that can echo the clinical success of conventional ultrasound-based devices.
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Affiliation(s)
- Reza Rasouli
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada.
| | - Karina Martinez Villegas
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada.
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada.
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Quebec, Canada
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Agnes CJ, Murshed M, Takada A, Willie BM, Tabrizian M. A 6-bromoindirubin-3'-oxime incorporated chitosan-based hydrogel scaffold for potential osteogenic differentiation: Investigation of material properties in vitro. Int J Biol Macromol 2023; 227:71-82. [PMID: 36535349 DOI: 10.1016/j.ijbiomac.2022.12.130] [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: 07/13/2022] [Revised: 12/07/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Effective treatments for critical size bone defects remain challenging. 6-Bromoindirubin-3'-Oxime (BIO), a glycogen synthase kinase 3β inhibitor, is a promising alternative for treatment of these defects since it aids in promoting osteogenic differentiation. In this study, BIO is incorporated into a new formulation of the guanosine diphosphate cross-linked chitosan scaffold to promote osteogenic differentiation. BIO incorporation was confirmed with 13C NMR through a novel concentration dependent peak around 41 ppm. The rapid gelation rate was maintained along with the internal structure's stability. The 10 μM BIO dose supported the control scaffold's microstructure demonstrating a suitable porosity and a low closed pore percentage. While pore sizes of BIO incorporated scaffolds were slightly smaller, pore heterogeneity was maintained. A proof-of-concept study with C2C12 cells suggested a dose-dependent response of BIO on early stages of osteogenic differentiation within the scaffold. These results support future work to examine BIO's role on osteogenic differentiation and biomineralization of encapsulated cells in the scaffold for bone regeneration.
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Affiliation(s)
- Celine J Agnes
- Department of Biomedical Engineering, McGill University, Montreal, QC, Canada.
| | - Monzur Murshed
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC, Canada; Shriners Hospital for Children, Montreal, QC, Canada.
| | - Adrien Takada
- Institute of Parasitology, McGill University, Montreal, QC, Canada.
| | - Bettina M Willie
- Department of Biomedical Engineering, McGill University, Montreal, QC, Canada; Shriners Hospital for Children, Montreal, QC, Canada; Department of Pediatric Surgery, McGill University, Montreal, QC, Canada.
| | - Maryam Tabrizian
- Department of Biomedical Engineering, McGill University, Montreal, QC, Canada; Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC, Canada.
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12
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Brown M, Li J, Moraes C, Tabrizian M, Li-Jessen NY. Decellularized extracellular matrix: New promising and challenging biomaterials for regenerative medicine. Biomaterials 2022; 289:121786. [DOI: 10.1016/j.biomaterials.2022.121786] [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] [Received: 10/26/2021] [Revised: 08/22/2022] [Accepted: 08/29/2022] [Indexed: 11/28/2022]
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13
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Porter JM, Guerassimoff L, Castiello FR, Charette A, Tabrizian M. INGAP-Peptide Variants as a Novel Therapy for Type 1 Diabetes: Effect on Human Islet Insulin Secretion and Gene Expression. Pharmaceutics 2022; 14:pharmaceutics14091833. [PMID: 36145580 PMCID: PMC9502412 DOI: 10.3390/pharmaceutics14091833] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/24/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022] Open
Abstract
Islet transplantation offers a long-term cure for Type 1 Diabetes (T1D), freeing patients from daily insulin injections. Therapeutic peptides have shown potential to increase the insulin output of pancreatic islets, maximizing the impact of grafted cells. The islet neogenesis-associated protein (INGAP), and its bioactive core (INGAP-P), stimulate beta-cell function and viability, offering the possibility for islet treatment prior to implant. However, dosing efficacy is limited by low circulation time and enzyme degradation. This proof-of-concept study presents the investigation of novel molecular variants of INGAP-P to find a more bioactive form. Custom-designed peptide variants of INGAP-P were synthesized and tested for their effect on the insulin secretion and gene expression of live human islets. We exposed the live islets of five donors to varying glucose concentrations with INGAP-P variants in solution. We identified four peptide variants (I9, I15Tyr, I19 and I15Cys) which displayed statistically significant enhancements over negative controls (representing a 1.6–2.8-fold increase in stimulation index). This is the first study that has assessed these INGAP-P variants in human islets. It highlights the potential for customized peptides for type 1 diabetes therapy and provides a foundation for future peptide-screening experiments.
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Affiliation(s)
- James M. Porter
- Department of Biological and Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3A 0G4, Canada
| | - Léa Guerassimoff
- Department of Biological and Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3A 0G4, Canada
- Campus MIL, l’Université de Montréal, Montreal, QC H2V 0B3, Canada
| | - Francisco Rafael Castiello
- Department of Biological and Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3A 0G4, Canada
| | - André Charette
- Campus MIL, l’Université de Montréal, Montreal, QC H2V 0B3, Canada
| | - Maryam Tabrizian
- Department of Biological and Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3A 0G4, Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC H3A 1G1, Canada
- Correspondence:
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14
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Moya-Garcia CR, Okuyama H, Sadeghi N, Li J, Tabrizian M, Li-Jessen NYK. In vitro models for head and neck cancer: Current status and future perspective. Front Oncol 2022; 12:960340. [PMID: 35992863 PMCID: PMC9381731 DOI: 10.3389/fonc.2022.960340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 06/29/2022] [Indexed: 12/12/2022] Open
Abstract
The 5-year overall survival rate remains approximately 50% for head and neck (H&N) cancer patients, even though new cancer drugs have been approved for clinical use since 2016. Cancer drug studies are now moving toward the use of three-dimensional culture models for better emulating the unique tumor microenvironment (TME) and better predicting in vivo response to cancer treatments. Distinctive TME features, such as tumor geometry, heterogenous cellularity, and hypoxic cues, notably affect tissue aggressiveness and drug resistance. However, these features have not been fully incorporated into in vitro H&N cancer models. This review paper aims to provide a scholarly assessment of the designs, contributions, and limitations of in vitro models in H&N cancer drug research. We first review the TME features of H&N cancer that are most relevant to in vitro drug evaluation. We then evaluate a selection of advanced culture models, namely, spheroids, organotypic models, and microfluidic chips, in their applications for H&N cancer drug research. Lastly, we propose future opportunities of in vitro H&N cancer research in the prospects of high-throughput drug screening and patient-specific drug evaluation.
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Affiliation(s)
| | - Hideaki Okuyama
- School of Communication Sciences and Disorders, McGill University, Montreal, QC, Canada
- Department of Otolaryngology – Head & Neck Surgery, Kyoto University, Kyoto, Japan
| | - Nader Sadeghi
- Department of Otolaryngology – Head and Neck Surgery, McGill University, Montreal, QC, Canada
- Research Institute of McGill University Health Center, McGill University, Montreal, QC, Canada
| | - Jianyu Li
- Department of Biomedical Engineering, McGill University, Montreal, QC, Canada
- Department of Mechanical Engineering, McGill University, Montreal, QC, Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, McGill University, Montreal, QC, Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC, Canada
- *Correspondence: Maryam Tabrizian, ; Nicole Y. K. Li-Jessen,
| | - Nicole Y. K. Li-Jessen
- Department of Biomedical Engineering, McGill University, Montreal, QC, Canada
- School of Communication Sciences and Disorders, McGill University, Montreal, QC, Canada
- Department of Otolaryngology – Head and Neck Surgery, McGill University, Montreal, QC, Canada
- Research Institute of McGill University Health Center, McGill University, Montreal, QC, Canada
- *Correspondence: Maryam Tabrizian, ; Nicole Y. K. Li-Jessen,
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15
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Martinez Villegas K, Rasouli R, Tabrizian M. Enhancing metabolic activity and differentiation potential in adipose mesenchymal stem cells via high-resolution surface-acoustic-wave contactless patterning. Microsyst Nanoeng 2022; 8:79. [PMID: 35846175 PMCID: PMC9276743 DOI: 10.1038/s41378-022-00415-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/20/2022] [Accepted: 06/08/2022] [Indexed: 06/05/2023]
Abstract
Acoustofluidics has shown great potential for label-free bioparticle patterning with excellent biocompatibility. Acoustofluidic patterning enables the induction of cell-cell interactions, which play fundamental roles in organogenesis and tissue development. One of the current challenges in tissue engineering is not only the control of the spatial arrangement of cells but also the preservation of cell patterns over time. In this work, we developed a standing surface acoustic wave-based platform and demonstrated its capability for the well-controlled and rapid cell patterning of adipose-derived mesenchymal stem cells in a high-density homogenous collagen hydrogel. This biocompatible hydrogel is easily UV crosslinked and can be retrieved within 3 min. Acoustic waves successfully guided the cells toward pressure nodal lines, creating a contactless alignment of cells in <5 s in culture media and <1 min in the hydrogel. The acoustically patterned cells in the hydrogel did not show a decrease in cell viability (>90%) 48 h after acoustic induction. Moreover, 45.53% and 30.85% increases in metabolic activity were observed in growth and differentiation media, respectively, on Day 7. On Day 14, a 32.03% change in metabolic activity was observed using growth media, and no significant difference was observed using differentiation media. The alkaline phosphatase activity showed an increase of 80.89% and 24.90% on Days 7 and 14, respectively, for the acoustically patterned cells in the hydrogel. These results confirm the preservation of cellular viability and improved cellular functionality using the proposed high-resolution acoustic patterning technique and introduce unique opportunities for the application of stem cell regenerative patches for the emerging field of tissue engineering.
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Affiliation(s)
| | - Reza Rasouli
- Department of Biological and Biomedical Engineering, McGill University, Montreal, QC Canada
| | - Maryam Tabrizian
- Department of Biological and Biomedical Engineering, McGill University, Montreal, QC Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC Canada
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16
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Distasio N, Dierick F, Ebrahimian T, Tabrizian M, Lehoux S. Design and development of Branched Poly(ß-aminoester) nanoparticles for Interleukin-10 gene delivery in a mouse model of atherosclerosis. Acta Biomater 2022; 143:356-371. [PMID: 35257950 DOI: 10.1016/j.actbio.2022.02.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 02/23/2022] [Accepted: 02/28/2022] [Indexed: 11/01/2022]
Abstract
Atherosclerosis progression is a result of chronic and non-resolving inflammation, effective treatments for which still remain to be developed. We designed and developed branched poly(ß-amino ester) nanoparticles (NPs) containing plasmid DNA encoding IL-10, a potent anti-inflammatory cytokine to atherosclerosis. The NPs (NP-VHPK) are functionalized with a targeting peptide (VHPK) specific for VCAM-1, which is overexpressed by endothelial cells at sites of atherosclerotic plaque. The anionic coating affords NP-VHPK with significantly lower toxicity than uncoated NPs in both endothelial cells and red blood cells (RBCs). Following injection of NP-VHPK in ApoE-/- mice, Cy5-labelled IL-10 significantly accumulates in both whole aortas and aortic sinus sections containing plaque compared to injection with a non-targeted control. Furthermore, IL-10 gene delivery results in an attenuation of inflammation locally at the plaque site. NP-VHPK may thus have the potential to reduce the inflammatory component of atherosclerosis in a safe and effective manner. STATEMENT OF SIGNIFICANCE: Atherosclerosis is a chronic inflammatory disease that results in the formation of lipid-laden plaques within vascular walls. Although treatments using drugs and antibodies are now beginning to address the inflammation in atherosclerosis, neither is sufficient for long-term therapy. In this paper, we introduce a strategy to deliver genes encoding the anti-inflammatory protein interleukin-10 (IL-10) in vivo. We showed that Branched Poly(ß-aminoester) carrying the IL-10 gene are able to localize specifically at the plaque via surface-functionalized targeting moieties against inflamed VCAM-1 and/or ICAM-1 and to facilitate gene transcription by ECs to increase the local concentration of the IL-10 within the plaque. To date, there is no report involving non-viral nanotechnology to provide gene-based therapies for atherosclerosis.
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17
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Paun RA, Dumut DC, Centorame A, Thuraisingam T, Hajduch M, Mistrik M, Dzubak P, De Sanctis JB, Radzioch D, Tabrizian M. One-Step Synthesis of Nanoliposomal Copper Diethyldithiocarbamate and Its Assessment for Cancer Therapy. Pharmaceutics 2022; 14:pharmaceutics14030640. [PMID: 35336014 PMCID: PMC8952320 DOI: 10.3390/pharmaceutics14030640] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/09/2022] [Accepted: 03/11/2022] [Indexed: 11/16/2022] Open
Abstract
The metal complex copper diethyldithiocarbamate (CuET) induces cancer cell death by inhibiting protein degradation and induces proteotoxic stress, making CuET a promising cancer therapeutic. However, no clinical formulation of CuET exists to date as the drug is insoluble in water and exhibits poor bioavailability. To develop a scalable formulation, nanoliposomal (LP) CuET was synthesized using ethanol injection as a facile one-step method that is suitable for large-scale manufacturing. The nanoparticles are monodispersed, colloidally stable, and approximately 100 nm in diameter with an encapsulation efficiency of over 80%. LP-CuET demonstrates excellent stability in plasma, minimal size change, and little drug release after six-month storage at various temperatures. Additionally, melanoma cell lines exhibit significant sensitivity to LP-CuET and cellular uptake occurs predominantly through endocytosis in YUMM 1.7 cancer cells. Intracellular drug delivery is mediated by vesicle acidification with more nanoparticles being internalized by melanoma cells compared with RAW 264.7 macrophages. Additionally, the nanoparticles preferentially accumulate in YUMM 1.7 tumors where they induce cancer cell death in vivo. The development and characterization of a stable and scalable CuET formulation illustrated in this study fulfils the requirements needed for a potent clinical grade formulation.
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Affiliation(s)
- Radu A. Paun
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, 3775 Rue University, Montreal, QC H3A 2B6, Canada;
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada; (D.C.D.); (A.C.); (D.R.)
| | - Daciana C. Dumut
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada; (D.C.D.); (A.C.); (D.R.)
- Division of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada
| | - Amanda Centorame
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada; (D.C.D.); (A.C.); (D.R.)
- Division of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada
| | - Thusanth Thuraisingam
- Division of Dermatology, Department of Medicine, Jewish General Hospital, McGill University, 3755 Cote Ste-Catherine, Montreal, QC H3T 1E2, Canada;
- Division of Dermatology, Department of Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, 77900 Olomouc, Czech Republic; (M.H.); (M.M.); (P.D.); (J.B.D.S.)
- Czech Advanced Technology and Research Institute, Palacky University Olomouc, Krizkovskeho 511/8, 77900 Olomouc, Czech Republic
| | - Martin Mistrik
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, 77900 Olomouc, Czech Republic; (M.H.); (M.M.); (P.D.); (J.B.D.S.)
- Czech Advanced Technology and Research Institute, Palacky University Olomouc, Krizkovskeho 511/8, 77900 Olomouc, Czech Republic
| | - Petr Dzubak
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, 77900 Olomouc, Czech Republic; (M.H.); (M.M.); (P.D.); (J.B.D.S.)
- Czech Advanced Technology and Research Institute, Palacky University Olomouc, Krizkovskeho 511/8, 77900 Olomouc, Czech Republic
| | - Juan B. De Sanctis
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, 77900 Olomouc, Czech Republic; (M.H.); (M.M.); (P.D.); (J.B.D.S.)
- Czech Advanced Technology and Research Institute, Palacky University Olomouc, Krizkovskeho 511/8, 77900 Olomouc, Czech Republic
| | - Danuta Radzioch
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada; (D.C.D.); (A.C.); (D.R.)
- Division of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, 3775 Rue University, Montreal, QC H3A 2B6, Canada;
- Faculty of Dentistry and Oral Health Sciences, McGill University, 3640 Rue University, Montreal, QC H3A 0C7, Canada
- Correspondence:
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18
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Naseri S, Cooke ME, Rosenzweig DH, Tabrizian M. 3D Printed In Vitro Dentin Model to Investigate Occlusive Agents against Tooth Sensitivity. Materials (Basel) 2021; 14:7255. [PMID: 34885408 PMCID: PMC8658150 DOI: 10.3390/ma14237255] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/18/2021] [Accepted: 11/24/2021] [Indexed: 11/17/2022]
Abstract
Tooth sensitivity is a painful and very common problem. Often stimulated by consuming hot, cold, sweet, or acidic foods, it is associated with exposed dentin microtubules that are open to dental pulp. One common treatment for tooth hypersensitivity is the application of occlusive particles to block dentin microtubules. The primary methodology currently used to test the penetration and occlusion of particles into dentin pores relies upon dentin discs cut from extracted bovine/human teeth. However, this method is limited due to low accessibility to the raw material. Thus, there is a need for an in vitro dentin model to characterize the effectiveness of occlusive agents. Three-dimensional printing technologies have emerged that make the printing of dentin-like structures possible. This study sought to develop and print a biomaterial ink that mimicked the natural composition and structure of dentin tubules. A formulation of type I collagen (Col), nanocrystalline hydroxyapatite (HAp), and alginate (Alg) was found to be suitable for the 3D printing of scaffolds. The performance of the 3D printed dentin model was compared to the natural dentin disk by image analysis via scanning electron microscopy (SEM), both pre- and post-treatment with occlusive microparticles, to evaluate the degree of dentinal tubule occlusion. The cytocompatibility of printed scaffolds was also confirmed in vitro. This is a promising biomaterial system for the 3D printing of dentin mimics.
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Affiliation(s)
- Shiva Naseri
- Department of Biomedical Engineering, McGill University, Montreal, QC H3A 2B4, Canada
| | - Megan E Cooke
- Department of Surgery, McGill University, Montreal, QC H3G 1A4, Canada
| | | | - Maryam Tabrizian
- Department of Biomedical Engineering, McGill University, Montreal, QC H3A 2B4, Canada
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19
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Rasouli R, Tabrizian M. Rapid Formation of Multicellular Spheroids in Boundary-Driven Acoustic Microstreams. Small 2021; 17:e2101931. [PMID: 34418307 DOI: 10.1002/smll.202101931] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/25/2021] [Indexed: 06/13/2023]
Abstract
3D cell spheroid culture has emerged as a more faithful recreation of cell growth environment compared to conventional 2D culture, as it can maintain tissue structures, physicochemical characteristics, and cell phenotypes. The majority of current spheroid formation methods are limited to a physical agglomeration of the desired cell type, and then relying on cell capacity to secrete extracellular matrix to form coherent spheroids. Hence, apart from being time-consuming, their success in leading to functional spheroid formation is also cell-type dependent. In this study, a boundary-driven acoustic microstreaming tool is presented that can simultaneously congregate cells and generate sturdy cell clusters through incorporating a bioadhesive such as collagen for rapid production of spheroids. The optimized mixture of type I collagen (0.42 mg mL-1 ) and methylcellulose (0.4% w/v ) accelerates the coagulation of cell-matrix as fast as 10 s while avoiding their adhesion to the device, and thereby offering easy spheroid retrieval. The versatility of the platform is shown for the production of MDA-MB-231 and MCF-7 spheroids, multicellular spheroids, and composite spheroids made of cells and microparticles. The ability to produce densely packed spheroids embedded within a biomimetic extracellular matrix component, along with rapid formation and easy collection of spheroids render the proposed device a step in technology development required to realize potentials of 3D constructs such as building blocks for the emerging field of bottom-up tissue engineering.
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Affiliation(s)
- Reza Rasouli
- Biomedical Engineering Department, Faculty of Medicine, McGill University, Montreal, Quebec, H3A 2B4, Canada
| | - Maryam Tabrizian
- Biomedical Engineering Department, Faculty of Medicine, McGill University, Montreal, Quebec, H3A 2B4, Canada
- Faculty of Dentistry, McGill University, Montreal, Quebec, H3A 1G1, Canada
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20
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Karoichan A, Baudequin T, Al-Jallad H, Tabrizian M. Encapsulation and differentiation of adipose-derived mesenchymal stem cells in a biomimetic purine cross-linked chitosan sponge. J Biomed Mater Res A 2021; 110:585-594. [PMID: 34545996 DOI: 10.1002/jbm.a.37311] [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: 05/21/2021] [Revised: 08/19/2021] [Accepted: 09/07/2021] [Indexed: 12/11/2022]
Abstract
Mesenchymal stem cells derived from adipose tissue have become a widely investigated cell source to use in tissue engineering applications. However, an optimal delivery scaffold for these cells is still needed. A rapidly gelling, injectable chitosan sponge was proposed in this study as a potential candidate for a suitable delivery scaffold. The results demonstrated the ability to encapsulate the stem cells at a 97.6% encapsulation efficiency and that the cells maintain their viability within the sponge. With the potential of using this scaffold for bone tissue engineering, ALP activity assay and fluorescent imaging for osteocalcin proved the ability to differentiate the encapsulated cells into the osteogenic lineage. Furthermore, co-encapsulation of pyrophosphatase within the sponge was investigated as a method to overcome the inhibitory effects that the sponge degradation by-products have on mineralization. Alizarin Red S staining demonstrated the beneficial effects of adding pyrophosphatase, where a significant increase in mineralization levels was achieved.
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Affiliation(s)
- Antoine Karoichan
- Faculty of Dentistry, McGill University, Montreal, Quebec, Canada.,Shriners Hospitals for Children, Montreal, Quebec, Canada
| | - Timothée Baudequin
- Biomedical Engineering Department, McGill University, Montreal, Quebec, Canada
| | - Hadil Al-Jallad
- Faculty of Dentistry, McGill University, Montreal, Quebec, Canada.,Shriners Hospitals for Children, Montreal, Quebec, Canada.,Department of Experimental Surgery, McGill University, Montreal, Quebec, Canada
| | - Maryam Tabrizian
- Faculty of Dentistry, McGill University, Montreal, Quebec, Canada.,Biomedical Engineering Department, McGill University, Montreal, Quebec, Canada
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21
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Nardo T, Chiono V, Carmagnola I, Fracchia L, Ceresa C, Tabrizian M, Ciardelli G. Mussel-inspired antimicrobial coating on PTFE barrier membranes for guided tissue regeneration. Biomed Mater 2021; 16. [PMID: 33770778 DOI: 10.1088/1748-605x/abf27e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 06/09/2020] [Accepted: 03/26/2021] [Indexed: 11/12/2022]
Abstract
Guided tissue regeneration procedures to treat periodontitis lesions making use of polytetrafluoroethylene (PTFE) membranes exhibit large variability in their surgical outcomes, due to bacterial infection following implantation. This work reports on a facile method to obtain antimicrobial coatings for such PTFE membranes, by exploiting a mussel-inspired approach andin-situformation of silver nanoparticles (AgNPs). PTFE films were initially coated with self-polymerized 3,4-dihydroxy-DL-phenylalanine (DOPA) (PTFE-DOPA), then incubated with AgNO3solution. In the presence of catechol moieties, Ag+ions reduced into Ag0, forming AgNPs of around 68 nm in the polyDOPA coating on PTFE membranes (PTFE-DOPA-Ag). The x-ray photoelectron spectroscopy, atomic force microscopy and scanning electron microscopy analyses indicated that the AgNPs were distributed quite homogeneously in the polymeric membrane. The antimicrobial ability of PTFE-DOPA-Ag membranes againstStaphylococcus aureusandEscherichia coliwas assessed.In vitrocell assay using NIH 3T3 fibroblasts showed that, although cells were adhered to PTFE-DOPA-Ag membranes, their viability and proliferation were limited demonstrating again the antibacterial activities of PTFE-DOPA-Ag membranes. This work provides proof-of-concept study of a new versatile approach for AgNPs coating, which may be easily applied to many other types of polymeric or metallic implants through exploiting the adhesive behavior of mussel-inspired coatings.
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Affiliation(s)
- Tiziana Nardo
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin 10129, Italy.,Department of Biomedical Engineering and Faculty of Dentistry, McGill University, Montreal (QC), Canada
| | - Valeria Chiono
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin 10129, Italy.,PolitoBIOMed Lab, Politecnico di Torino, Turin 10129, Italy.,Department for Materials and Devices of the National Research Council, Institute for the Chemical and Physical Processes (CNR-IPCF UOS), Pisa 56124, Italy
| | - Irene Carmagnola
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin 10129, Italy.,PolitoBIOMed Lab, Politecnico di Torino, Turin 10129, Italy.,Department for Materials and Devices of the National Research Council, Institute for the Chemical and Physical Processes (CNR-IPCF UOS), Pisa 56124, Italy
| | - Letizia Fracchia
- Department of Pharmaceutical Sciences, Università degli Studi del Piemonte Orientale 'A. Avogadro', Novara 28100, Italy
| | - Chiara Ceresa
- Department of Pharmaceutical Sciences, Università degli Studi del Piemonte Orientale 'A. Avogadro', Novara 28100, Italy
| | - Maryam Tabrizian
- Department of Biomedical Engineering and Faculty of Dentistry, McGill University, Montreal (QC), Canada
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin 10129, Italy.,PolitoBIOMed Lab, Politecnico di Torino, Turin 10129, Italy.,Department for Materials and Devices of the National Research Council, Institute for the Chemical and Physical Processes (CNR-IPCF UOS), Pisa 56124, Italy
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22
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Ahmed S, Salmon H, Distasio N, Do HD, Scherman D, Alhareth K, Tabrizian M, Mignet N. Viscous Core Liposomes Increase siRNA Encapsulation and Provides Gene Inhibition When Slightly Positively Charged. Pharmaceutics 2021; 13:pharmaceutics13040479. [PMID: 33916066 PMCID: PMC8066317 DOI: 10.3390/pharmaceutics13040479] [Citation(s) in RCA: 9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 03/24/2021] [Accepted: 03/26/2021] [Indexed: 01/26/2023] Open
Abstract
Since its discovery, evidence that siRNA was able to act as an RNA interference effector, led to its acceptation as a novel medicine. The siRNA approach is very effective, due to its catalytic mechanism, but still the limitations of its cellular delivery should be addressed. One promising form of non-viral gene delivery system is liposomes. The variable and versatile nature of the lipids keeps the possibility to upgrade the liposomal structure, which makes them suitable for encapsulation and delivery of drugs. However, to avoid the limitation of fast release for the hydrophilic drug, we previously designed viscous core liposomes. We aimed in this work to evaluate if these viscous core liposomes (NvcLs) could be of interest for siRNA encapsulation. Then, we sought to add a limited amount of positive charges to provide cell interaction and transfection. Cationic lipid dimyristoylaminopropylaminopropyl or the polymer poly(ethylenimine) were incorporated in NvcL to produce positively charged viscous core liposomes (PvcL) by a customized microfluidic device. We found that NvcLs increased the encapsulation efficiency and loading content with regards to the neutral liposome. Both PvcLPEI and PvcLDMAPAP exhibited transfection and GFP knock-down (≈40%) in both 2D and 3D cell cultures. Finally, the addition of slight positive charges did not induce cell toxicity.
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Affiliation(s)
- Shayan Ahmed
- Unité des Technologies Chimiques et Biologiques Pour la Santé (UTCBS), CNRS, INSERM, Université de Paris, F-75006 Paris, France; (S.A.); (H.D.D.); (D.S.); (K.A.)
| | - Hugo Salmon
- Biomedical Engineering Department and Faculty of Dentistry, McGill University, 3775 University St, Montreal, QC H3A 2B4, Canada; (H.S.); (N.D.); (M.T.)
| | - Nicholas Distasio
- Biomedical Engineering Department and Faculty of Dentistry, McGill University, 3775 University St, Montreal, QC H3A 2B4, Canada; (H.S.); (N.D.); (M.T.)
| | - Hai Doan Do
- Unité des Technologies Chimiques et Biologiques Pour la Santé (UTCBS), CNRS, INSERM, Université de Paris, F-75006 Paris, France; (S.A.); (H.D.D.); (D.S.); (K.A.)
| | - Daniel Scherman
- Unité des Technologies Chimiques et Biologiques Pour la Santé (UTCBS), CNRS, INSERM, Université de Paris, F-75006 Paris, France; (S.A.); (H.D.D.); (D.S.); (K.A.)
| | - Khair Alhareth
- Unité des Technologies Chimiques et Biologiques Pour la Santé (UTCBS), CNRS, INSERM, Université de Paris, F-75006 Paris, France; (S.A.); (H.D.D.); (D.S.); (K.A.)
| | - Maryam Tabrizian
- Biomedical Engineering Department and Faculty of Dentistry, McGill University, 3775 University St, Montreal, QC H3A 2B4, Canada; (H.S.); (N.D.); (M.T.)
| | - Nathalie Mignet
- Unité des Technologies Chimiques et Biologiques Pour la Santé (UTCBS), CNRS, INSERM, Université de Paris, F-75006 Paris, France; (S.A.); (H.D.D.); (D.S.); (K.A.)
- Correspondence: author:
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Baudequin T, Agnes C, Tabrizian M. A core-shell guanosine diphosphate crosslinked chitosan scaffold as a potential co-encapsulation platform. Carbohydr Polym 2020; 256:117499. [PMID: 33483026 DOI: 10.1016/j.carbpol.2020.117499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 11/24/2020] [Accepted: 12/08/2020] [Indexed: 12/14/2022]
Abstract
Recent engineering strategies to better mimic native tissue architecture involve co-encapsulation of cell lineages and/or growth factors in multi-compartmental scaffolds. This study introduces a core-shell platform based on a rapidly gelling guanosine diphosphate cross-linked chitosan scaffold for co-culture. The core-shell sponge is fabricated through combination of chitosan and guanosine diphosphate in 3 steps with each shell layer deposited around the previous layer. Co-encapsulation of pre-osteoblastic MC-3T3 cells and growth factors in the core-shell sponge showed similar microstructure to the standard sponge with high pore connectivity and low closed porosity (<0.4 %). A viable cell population was maintained over time with enhanced cellular functionality when ascorbic acid was added in the same compartment. Co-culture was explored with a proof-of-concept study shown for MC-3T3 and endothelial cells showing homogeneous distribution of cells in their intended compartment. Overall, this core-shell scaffold shows potential as a platform for the regeneration of multiple tissues.
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Affiliation(s)
- Timothée Baudequin
- Department of Biological and Biomedical Engineering, McGill University, Montreal, Quebec, Canada.
| | - Celine Agnes
- Faculty of Dentistry, McGill University, Montreal, Quebec, Canada.
| | - Maryam Tabrizian
- Department of Biological and Biomedical Engineering, McGill University, Montreal, Quebec, Canada; Faculty of Dentistry, McGill University, Montreal, Quebec, Canada.
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24
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Singh M, Nolan H, Tabrizian M, Cosnier S, Düsberg GS, Holzinger M. Functionalization of Contacted Carbon Nanotube Forests by Dip Coating for High‐Performance Biocathodes. ChemElectroChem 2020. [DOI: 10.1002/celc.202001334] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Meenakshi Singh
- Univ. Grenoble Alpes – CNRS Département de Chimie Moléculaire UMR 5250 F-38000 Grenoble France
- McGill University Biomat'X Research Laboratories Dept. of Biomedical Engineering and Faculty of Dentistry Montréal Canada
| | - Hugo Nolan
- School of Chemistry Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials Bio-Engineering Research Centre (AMBER) Trinity College Dublin 2 Ireland
| | - Maryam Tabrizian
- McGill University Biomat'X Research Laboratories Dept. of Biomedical Engineering and Faculty of Dentistry Montréal Canada
| | - Serge Cosnier
- Univ. Grenoble Alpes – CNRS Département de Chimie Moléculaire UMR 5250 F-38000 Grenoble France
| | - Georg S. Düsberg
- School of Chemistry Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials Bio-Engineering Research Centre (AMBER) Trinity College Dublin 2 Ireland
- Universität der Bundeswehr München, Neubiberg 85579 Germany
| | - Michael Holzinger
- Univ. Grenoble Alpes – CNRS Département de Chimie Moléculaire UMR 5250 F-38000 Grenoble France
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Distasio N, Salmon H, Dierick F, Ebrahimian T, Tabrizian M, Lehoux S. VCAM‐1‐Targeted Gene Delivery Nanoparticles Localize to Inflamed Endothelial Cells and Atherosclerotic Plaques. Adv Therap 2020. [DOI: 10.1002/adtp.202000196] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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)
- Nicholas Distasio
- Department of Biomedical Engineering McGill University 3773 University Montreal QC H3A 2B6 Canada
| | - Hugo Salmon
- Faculty of Dentistry McGill University 2001 Avenue McGill College #500 Montreal QC H3A 1G1 Canada
| | - France Dierick
- Lady Davis Institute Department of Medicine McGill University 3755 Chemin de la Côte‐Sainte‐Catherine Montreal QC H3T 1E2 Canada
| | - Talin Ebrahimian
- Lady Davis Institute Department of Medicine McGill University 3755 Chemin de la Côte‐Sainte‐Catherine Montreal QC H3T 1E2 Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering McGill University 3773 University Montreal QC H3A 2B6 Canada
- Faculty of Dentistry McGill University 2001 Avenue McGill College #500 Montreal QC H3A 1G1 Canada
| | - Stephanie Lehoux
- Lady Davis Institute Department of Medicine McGill University 3755 Chemin de la Côte‐Sainte‐Catherine Montreal QC H3T 1E2 Canada
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26
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Yafia M, Foudeh AM, Tabrizian M, Najjaran H. Low-Cost Graphene-Based Digital Microfluidic System. Micromachines (Basel) 2020; 11:mi11090880. [PMID: 32971896 PMCID: PMC7569958 DOI: 10.3390/mi11090880] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/13/2020] [Accepted: 09/16/2020] [Indexed: 01/15/2023]
Abstract
In this work, the laser-scribing technique was used as a low-cost, rapid and facile method for fabricating digital microfluidic (DMF) systems. Laser-scribed graphene (LSG) electrodes are directly synthesized on flexible substrates to pattern the DMF electrode arrays. This facilitates the DMF electrodes’ fabrication process by eliminating many microfabrication steps. An electrowetting test was performed to investigate the effectiveness of the LSG DMF electrodes in changing the contact angles of droplets. Different DMF operations were successfully performed using the proposed LSG DMF chips in both open and closed DMF systems. The quality and output resolution were examined to assess the performance of such patterned electrodes in the DMF systems. To verify the efficacy of the LSG DMF chips, a one-step direct assay for the detection of Legionellapneumophila deoxyribonucleic acid (DNA) was performed on the chip without the need for any washing step. The high specificity in distinguishing a single-nucleotide mismatch was achieved by detecting target DNA concentrations as low as 1 nM. Our findings suggest that the proposed rapid and easy fabrication method for LSG DMF electrodes offers a great platform for low-cost and easily accessible point-of-care diagnostic devices.
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Affiliation(s)
- Mohamed Yafia
- School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada
- Correspondence: (M.Y.); (H.N.)
| | - Amir M. Foudeh
- Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, QC H3A 0C7, Canada; (A.M.F.); (M.T.)
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, QC H3A 0C7, Canada; (A.M.F.); (M.T.)
- Faculty of Dentistry, McGill University, Montreal, QC H3A 1G1, Canada
| | - Homayoun Najjaran
- School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada
- Correspondence: (M.Y.); (H.N.)
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Porter JM, Guerassimoff L, Castiello FR, Tabrizian M. Synthesis and Screening of Novel Peptides on Human Pancreatic Islets for Type 1 Diabetes Therapies . Annu Int Conf IEEE Eng Med Biol Soc 2020; 2020:2217-2220. [PMID: 33018448 DOI: 10.1109/embc44109.2020.9175493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Type 1 diabetic patients characteristically exhibit a loss of insulin production, leading to chronic hyperglycemia and related complications. Herein we describe the design, synthesis and screening of novel oligopeptides for their potential to enhance the secretion of insulin from human pancreatic islets. The investigation of these compounds, based off the patented INGAP-PP sequence, aims to identify the peptide features key to maximizing insulin secretion.Clinical Relevance - This report describes the relative efficacy of selected novel compounds for potential Type 1 Diabetes Therapy. Tested on live human pancreatic islets, the compounds are evaluated for their enhancing/inhibitory effect on the secretion of insulin. These studies pave the way for future targeted drug therapies.
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28
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Saad M, Chinerman D, Tabrizian M, Faucher SP. Identification of two aptamers binding to Legionella pneumophila with high affinity and specificity. Sci Rep 2020; 10:9145. [PMID: 32499557 PMCID: PMC7272621 DOI: 10.1038/s41598-020-65973-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 05/13/2020] [Indexed: 12/21/2022] Open
Abstract
Legionella pneumophila (Lp) is a water borne bacterium causing Legionnaires’ Disease (LD) in humans. Rapid detection of Lp in water system is essential to reduce the risk of LD outbreaks. The methods currently available require expert skills and are time intensive, thus delaying intervention. In situ detection of Lp by biosensor would allow rapid implementation of control strategies. To this end, a biorecognition element is required. Aptamers are considered promising biorecognition molecules for biosensing. Aptamers are short oligonucleotide sequence folding into a specific structure and are able to bind to specific molecules. Currently, no aptamer and thus no aptamer-based technology exists for the detection of Lp. In this study, Systemic Evolution of Ligands through EXponential enrichment (SELEX) was used to identify aptamers binding specifically to Lp. Ten rounds of positive selection and two rounds of counter-selection against two Pseudomonas species were performed. Two aptamers binding strongly to Lp were identified with KD of 116 and 135 nM. Binding specificity of these two aptamers to Lp was confirmed by flow cytometry and fluorescence microscopy. Therefore, these two aptamers are promising biorecognition molecules for the detection of Lp in water systems.
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Affiliation(s)
- Mariam Saad
- Department of Natural Resource Sciences, Faculty of Agricultural and Environmental Sciences, McGill University, Ste-Anne-de-Bellevue, Quebec, H9X 3V9, Canada.,Centre de Recherche en Infectiologie Porcine et Avicole (CRIPA), Université de Montréal, Faculté de Médecine Vétérinaire, Saint-Hyacinthe, Québec, J2S 2M2, Canada
| | - Deanna Chinerman
- Department of Natural Resource Sciences, Faculty of Agricultural and Environmental Sciences, McGill University, Ste-Anne-de-Bellevue, Quebec, H9X 3V9, Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, Quebec, H3A 2B4, Canada.,Faculty of Dentistry, McGill University, Montreal, Quebec, H3A 2B4, Canada
| | - Sebastien P Faucher
- Department of Natural Resource Sciences, Faculty of Agricultural and Environmental Sciences, McGill University, Ste-Anne-de-Bellevue, Quebec, H9X 3V9, Canada. .,Centre de Recherche en Infectiologie Porcine et Avicole (CRIPA), Université de Montréal, Faculté de Médecine Vétérinaire, Saint-Hyacinthe, Québec, J2S 2M2, Canada.
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Modarres P, Tabrizian M. Phase-controlled field-effect micromixing using AC electroosmosis. Microsyst Nanoeng 2020; 6:60. [PMID: 34567671 PMCID: PMC8433414 DOI: 10.1038/s41378-020-0166-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 02/05/2020] [Indexed: 05/08/2023]
Abstract
The exploration and application of electrokinetic techniques in micro total analysis systems have become ubiquitous in recent years, and scientists are expanding the use of such techniques in areas where comparable active or passive methods are not as successful. In this work, for the first time, we utilize the concept of AC electroosmosis to design a phase-controlled field-effect micromixer that benefits from a three-finger sinusoidally shaped electrodes. Analogous to field-effect transistor devices, the principle of operation for the proposed micromixer is governed by the source-gate and source-drain voltage potentials that are modulated by introducing a phase lag between the driving electrodes. At an optimized flow rate and biasing scheme, we demonstrate that the source, gate, and drain voltage phase relations can be configured such that the micromixer switches from an unmixed state (phase shift of 0°) to a mixed state (phase shift of 180°). High mixing efficiencies beyond 90% was achieved at a volumetric flow rate of 4 µL/min corresponding to ~13.9 mm/s at optimized voltage excitation conditions. Finally, we employed the proposed micromixer for the synthesis of nanoscale lipid-based drug delivery vesicles through the process of electrohydrodynamic-mediated nanoprecipitation. The phase-controlled electrohydrodynamic mixing utilized for the nanoprecipitation technique proved that nanoparticles of improved monodispersity and concentration can be produced when mixing efficiency is enhanced by tuning the phase shifts between electrodes.
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Affiliation(s)
- Paresa Modarres
- Biomedical Engineering Department, McGill University, Montreal, QC Canada
| | - Maryam Tabrizian
- Biomedical Engineering Department, McGill University, Montreal, QC Canada
- Faculty of Dentistry, McGill University, 2001 McGill College Ave, Montreal, QC Canada
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30
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Abstract
Mixing is a crucial step in many chemical analyses and synthesis processes, particularly in nanoparticle formation, where it determines the nucleation rate, homogeneity, and physicochemical characteristics of the products. In this study, we propose an energy-efficient acoustic platform based on boundary-driven acoustic streaming, which provides the rapid mixing required to control nanoprecipitation. The device encompasses oscillatory bubbles and sharp edges in the microchannel to transform the acoustic energy into vigorous vortical fluid motions. The combination of bubbles and sharp edges at their immediate proximity induced substantially stronger acoustic microstreams than the simple superposition of their effects. The device could effectively homogenize DI water and fluorescein within a mixing length of 25.2 μm up to a flow rate of 116 μL min-1 at a driving voltage of 40 Vpp, corresponding to a mixing time of 0.8 ms. This rapid mixing was employed to mitigate some complexities in nanoparticle synthesis, namely controlling nanoprecipitation and size, batch to batch variation, synthesis throughput, and clogging. Both polymeric nanoparticles and liposomes were synthesized in this platform and showed a smaller effective size and narrower size distribution in comparison to those obtained by a hydrodynamic flow focusing method. Through changing the mixing time, the effective size of the nanoparticles could be fine-tuned for both polymeric nanoparticles and liposomes. The rapid mixing and strong vortices prevent aggregation of nanoparticles, leading to a substantially higher throughput of liposomes in comparison with that by the hydrodynamic flow focusing method. The straightforward fabrication process of the system coupled with low power consumption, high-controllability, and rapid mixing time renders this mixer a practical platform for a myriad of nano and biotechnological applications.
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Affiliation(s)
- M Reza Rasouli
- Biomedical Engineering Department-Faculty of Medicine, McGill University, Montreal, Quebec H3A 2B4, Canada.
| | - Maryam Tabrizian
- Biomedical Engineering Department-Faculty of Medicine, McGill University, Montreal, Quebec H3A 2B4, Canada. and Faculty of Dentistry, McGill University, Montreal, Quebec H3A 2B4, Canada
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31
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Castiello FR, Tabrizian M. Gold nanoparticle amplification strategies for multiplex SPRi-based immunosensing of human pancreatic islet hormones. Analyst 2019; 144:2541-2549. [PMID: 30864587 DOI: 10.1039/c9an00140a] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this work, we demonstrate the potential use of SPRi for secretion-monitoring of pancreatic islets, small micro-organs that regulate glucose homeostasis in the body. In the islets, somatostatin works as a paracrine inhibitor of insulin and glucagon secretion. However, this inhibitory effect is lost in diabetic individuals and little is known about its contribution to the pathology of diabetes. Thus, the simultaneous detection of insulin, glucagon and somatostatin could help understand such communications. Previously, the authors introduced an SPRi biosensor to simultaneously monitor insulin, glucagon and somatostatin using an indirect competitive immunoassay. However, our sensor achieved a relatively high LOD for somatostatin detection (246 nM), the smallest of the three hormones. For this reason, the present work aimed to improve the performance of our SPRi biosensor using gold nanoparticles (GNPs) as a means of ensuring somatostatin detection from a small group of islets. Although GNP amplification is frequently reported in the literature for individual detection of analytes using SPR, studies regarding the optimal strategy in a multiplexed SPR setup are missing. Therefore, with the aim of finding the optimal GNP amplification strategies for multiplex sensing we compared three architectures: (1) GNPs immobilized on the sensor surface, (2) GNPs conjugated with primary antibodies (GNP-Ab1) and (3) GNPs conjugated with a secondary antibody (GNP-Ab2). Among these strategies an immunoassay using GNP-Ab2 conjugates was able to achieve multiplex detection of the three hormones without cross-reactivity and with 9-fold LOD improvement for insulin, 10-fold for glucagon and 200-fold for somatostatin when compared to the SPRi biosensor without GNPs. The present work denotes the first report of the simultaneous detection of such hormones with a sensitivity level comparable to ELISA assays, particularly for somatostatin.
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Affiliation(s)
- F Rafael Castiello
- Biomedical and Biological Engineering Department, McGill University, Montreal, QC, Canada.
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Jahan K, Mekhail M, Tabrizian M. One-step fabrication of apatite-chitosan scaffold as a potential injectable construct for bone tissue engineering. Carbohydr Polym 2019; 203:60-70. [DOI: 10.1016/j.carbpol.2018.09.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/15/2018] [Accepted: 09/11/2018] [Indexed: 01/07/2023]
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Castiello FR, Porter J, Modarres P, Tabrizian M. Interfacial capacitance immunosensing using interdigitated electrodes: the effect of insulation/immobilization chemistry. Phys Chem Chem Phys 2019; 21:15787-15797. [DOI: 10.1039/c9cp02129a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
With the aim of improving the reproducibility of capacitive immunosensors, we performed a comparative study of four different insulating/immobilization chemistries.
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Affiliation(s)
| | - James Porter
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
| | - Paresa Modarres
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
| | - Maryam Tabrizian
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
- Faculty of Dentistry
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Filion-Côté S, Melaine F, Kirk AG, Tabrizian M. Monitoring of bacterial film formation and its breakdown with an angular-based surface plasmon resonance biosensor. Analyst 2018; 142:2386-2394. [PMID: 28555681 DOI: 10.1039/c7an00068e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Bacterial biofilms are a leading cause of infection in health-care settings. Surface plasmon resonance (SPR) biosensors stand as valuable tools not only for the detection of biological entities and the characterisation of biomaterials but also as a suitable means to monitor bacterial film formation. This article reports on a proof-of-concept study for the use of an angular-based SPR biosensor for the monitoring of bacterial cell growth and biofilm formation and removal under the effect of different cleaning agents. The benefit of this custom-made SPR instrument is that it records simultaneously both the critical and resonant angles. This provides unique information on the growth of bacterial cells which is otherwise not obtainable with commonly used intensity-based SPR systems. The results clearly showed that a multilayer biofilm can be formed in 48 hours and the steps involved can be monitored in real-time with the SPR instrument through the measurement of the refractive index change and following the evolution in the shape of the SPR curve. The number, the depth and the sharpness of the reflection ripples varied as the film became thicker. Simulation results confirmed that the number of layers of bacteria affected the number of ripples at the critical angle. Real-time monitoring of the film breakdown with three cleaning agents indicated that bleach solution at 4.5% was the most effective in disrupting the biofilm from the gold sensor. Our overall findings suggest that the SPR biosensor with angular modulation presented in this article can perform real-time monitoring of biofilm formation and has the potential to be used as a platform to test the efficiency of disinfectants.
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Affiliation(s)
- Sandrine Filion-Côté
- The Photonic Systems Group, Dept. Electrical and Computer Engineering, McGill University, McConnell Engineering Building, Montréal, H3A 0E9, Canada
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DiStasio N, Arts M, Lehoux S, Tabrizian M. IL-10 Gene Transfection in Primary Endothelial Cells via Linear and Branched Poly(β-amino ester) Nanoparticles Attenuates Inflammation in Stimulated Macrophages. ACS Appl Bio Mater 2018; 1:917-927. [DOI: 10.1021/acsabm.8b00342] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Nicholas DiStasio
- Lady Davis Institute, Department of Medicine, McGill University, 3755 Chemin de la Côte-Sainte-Catherine, Montréal, QC H3T 1E2, Canada
| | - Marloes Arts
- Lady Davis Institute, Department of Medicine, McGill University, 3755 Chemin de la Côte-Sainte-Catherine, Montréal, QC H3T 1E2, Canada
| | - Stephanie Lehoux
- Lady Davis Institute, Department of Medicine, McGill University, 3755 Chemin de la Côte-Sainte-Catherine, Montréal, QC H3T 1E2, Canada
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36
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DiStasio N, Arts M, Lehoux S, Tabrizian M. IL-10 Gene Transfection in Primary Endothelial Cells via Linear and Branched Polymer Nanoparticles Activates Anti-inflammatory Pathways in Macrophages. ATHEROSCLEROSIS SUPP 2018. [DOI: 10.1016/j.atherosclerosissup.2018.04.269] [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]
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37
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Felfoul O, Mohammadi M, Taherkhani S, de Lanauze D, Zhong Xu Y, Lafleur M, Gaboury L, Tabrizian M, Vuong T, Batist G, Beauchemin N, Radzioch D, Martel S. [Delivery in hypoxic tumor regions of a chemotherapeutic agent encapsulated in nanoliposomes carried by magnetoaerotactic bacteria]. Med Sci (Paris) 2018; 34:197-199. [PMID: 29547100 DOI: 10.1051/medsci/20183403002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Ouajdi Felfoul
- Laboratoire de nanorobotique - département de génie informatique et génie logiciel, Institut de génie biomédical, Polytechnique Montréal, Montréal H3T 1J4, Canada
| | - Mahmood Mohammadi
- Laboratoire de nanorobotique - département de génie informatique et génie logiciel, Institut de génie biomédical, Polytechnique Montréal, Montréal H3T 1J4, Canada
| | - Samira Taherkhani
- Laboratoire de nanorobotique - département de génie informatique et génie logiciel, Institut de génie biomédical, Polytechnique Montréal, Montréal H3T 1J4, Canada - Département de Génie biomédical, université McGill, Montréal H3A 2B4, Canada
| | - Dominic de Lanauze
- Laboratoire de nanorobotique - département de génie informatique et génie logiciel, Institut de génie biomédical, Polytechnique Montréal, Montréal H3T 1J4, Canada
| | - Yong Zhong Xu
- Centre universitaire de santé McGill, Montréal H4A 3J1, Canada
| | - Michel Lafleur
- Département de chimie, université de Montréal, Montréal H3C 3J7, Canada
| | - Louis Gaboury
- Département de pathologie et de biologie cellulaire, Institut de recherche en immunologie et cancer (IRIC), université de Montréal, Montréal H3T 1J4, Canada
| | - Maryam Tabrizian
- Département de Génie biomédical, université McGill, Montréal H3A 2B4, Canada - Faculté de dentisterie, université McGill, Montréal H3A 1G1, Canada
| | - Té Vuong
- Département de pathologie et de biologie cellulaire, Institut de recherche en immunologie et cancer (IRIC), université de Montréal, Montréal H3T 1J4, Canada
| | - Gerald Batist
- Département d'oncologie, Centre du cancer Segal, hôpital général Juif, université McGill, Montréal H3T 1E2, Canada
| | - Nicole Beauchemin
- Départements de biochimie, médecine et oncologie, Centre de recherche sur le cancer Goodman, université McGill, 1160 avenue des Pins, Montréal H3A 1A3, Canada
| | - Danuta Radzioch
- Centre universitaire de santé McGill, Montréal H4A 3J1, Canada
| | - Sylvain Martel
- Laboratoire de nanorobotique - département de génie informatique et génie logiciel, Institut de génie biomédical, Polytechnique Montréal, Montréal H3T 1J4, Canada
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38
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Baudequin T, Tabrizian M. Multilineage Constructs for Scaffold-Based Tissue Engineering: A Review of Tissue-Specific Challenges. Adv Healthc Mater 2018; 7. [PMID: 29193897 DOI: 10.1002/adhm.201700734] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 06/12/2017] [Revised: 09/28/2017] [Indexed: 12/11/2022]
Abstract
There is a growing interest in the regeneration of tissue in interfacial regions, where biological, physical, and chemical attributes vary across tissue type. The simultaneous use of distinct cell lineages can help in developing in vitro structures, analogous to native composite tissues. This literature review gathers the recent reports that have investigated multiple cell types of various sources and lineages in a coculture system for tissue-engineered constructs. Such studies aim at mimicking the native organization of tissues and their interfaces, and/or to improve the development of complex tissue substitutes. This paper thus distinguishes itself from those focusing on technical aspects of coculturing for a single specific tissue. The first part of this review is dedicated to variables of cocultured tissue engineering such as scaffold, cells, and in vitro culture environment. Next, tissue-specific coculture methods and approaches are covered for the most studied tissues. Finally, cross-analysis is performed to highlight emerging trends in coculture principles and to discuss how tissue-specific challenges can inspire new approaches for regeneration of different interfaces to improve the outcomes of various tissue engineering strategies.
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Affiliation(s)
- Timothée Baudequin
- Faculty of Medicine; Biomat'X Laboratory; Department of Biomedical Engineering; McGill University; 740 ave. Dr. Penfield, Room 4300 Montréal QC H3A 0G1 Québec Canada
| | - Maryam Tabrizian
- Faculty of Medicine; Biomat'X Laboratory; Department of Biomedical Engineering; McGill University; 740 ave. Dr. Penfield, Room 4300 Montréal QC H3A 0G1 Québec Canada
- Faculty of Dentistry; McGill University; 3775 rue University, Room 313/308B Montréal QC H3A 2B4 Québec Canada
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Castiello FR, Tabrizian M. Multiplex Surface Plasmon Resonance Imaging-Based Biosensor for Human Pancreatic Islets Hormones Quantification. Anal Chem 2018; 90:3132-3139. [DOI: 10.1021/acs.analchem.7b04288] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Affiliation(s)
- Selya Amrani
- Biomedical
Engineering Department-Faculty of Medicine, ‡Faculty of Dentistry, McGill University, Montreal, Quebec H3A 2B4, Canada
| | - Maryam Tabrizian
- Biomedical
Engineering Department-Faculty of Medicine, ‡Faculty of Dentistry, McGill University, Montreal, Quebec H3A 2B4, Canada
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41
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Benameur L, Baudequin T, Mekhail M, Tabrizian M. The bioconjugation mechanism of purine cross-linkers affects microstructure and cell response to ultra rapidly gelling purine–chitosan sponges. J Mater Chem B 2018; 6:602-613. [DOI: 10.1039/c7tb02968c] [Citation(s) in RCA: 11] [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: 12/21/2022]
Abstract
As a cell carrier, cross-linking is one of the most common approaches used to provide chitosan with greater structural integrity.
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Affiliation(s)
- Laila Benameur
- Department of Biomedical Engineering
- McGill University
- Montreal
- Canada
| | | | - Mina Mekhail
- Department of Biomedical Engineering
- McGill University
- Montreal
- Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering
- McGill University
- Montreal
- Canada
- Faculty of Dentistry
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42
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Melaine F, Saad M, Faucher S, Tabrizian M. Selective and High Dynamic Range Assay Format for Multiplex Detection of Pathogenic Pseudomonas aeruginosa, Salmonella typhimurium, and Legionella pneumophila RNAs Using Surface Plasmon Resonance Imaging. Anal Chem 2017; 89:7802-7807. [DOI: 10.1021/acs.analchem.7b01942] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- F. Melaine
- Department
of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, Quebec, Canada H3A 2B4
| | - M. Saad
- Department
of Natural Resource Sciences, Faculty of Agricultural and Environmental
Sciences, McGill University, Sainte-Anne-de-Bellevue, Quebec, Canada H9X 3V9
| | - S. Faucher
- Department
of Natural Resource Sciences, Faculty of Agricultural and Environmental
Sciences, McGill University, Sainte-Anne-de-Bellevue, Quebec, Canada H9X 3V9
| | - M. Tabrizian
- Department
of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, Quebec, Canada H3A 2B4
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43
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Nayef L, Castiello R, Tabrizian M. Washless Method Enables Multilayer Coating of an Aggregation-Prone Nanoparticulate Drug Delivery System with Enhanced Yields, Colloidal Stability, and Scalability. Macromol Biosci 2017; 17. [PMID: 28225570 DOI: 10.1002/mabi.201600535] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 01/16/2017] [Indexed: 12/22/2022]
Abstract
Aggregation is frequently encountered during coating nanoparticles, especially when the core is not solid and the coating polyelectrolytes are weak. Here, the coating of a nanoliposome with two weak polyelectrolytes, alginate and chitosan, is investigated. First, quartz crystal microbalance with dissipation, atomic force microscopy, scanning electron microscopy, and energy dispersive spectroscopy analyses confirm the feasibility of firm adsorption of up to 16 layers of weak polyelectrolytes to the liposomal surface. Titrations are then performed to identify the lowest amounts of polyelectrolytes required to make eight saturated coating layers using the washless method. Significantly improved yields and reproducibility (almost 100%) are achieved, in addition to control over layer thickness. Attenuated total reflectance Fourier transform infrared spectroscopy studies confirm the success of layering. This is special since scientists always attempt to reduce nanoparticle aggregation by substituting the soft core, using one strong polyelectrolyte, or contending with lower yields or numbers of coating layers.
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Affiliation(s)
- Lamees Nayef
- Department of Biomedical Engineering, McGill University, 740-ave. Dr. Penfield, Room 4300, Montréal, QC H3A 0G1, Canada
| | - Rafael Castiello
- Department of Biomedical Engineering, McGill University, 740-ave. Dr. Penfield, Room 4300, Montréal, QC H3A 0G1, Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, McGill University, 740-ave. Dr. Penfield, Room 4300, Montréal, QC H3A 0G1, Canada.,Department of Biomedical Engineering, McGill University, 3775-rue University Room 313/308B, Montréal, QC H3A 2B4, Canada
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Abstract
For the past century, various biomaterials have been used in the treatment of bone defects and fractures. Their role as potential substitutes for human bone grafts increases as donors become scarce. Metals, ceramics and polymers are all materials that confer different advantages to bone scaffold development. For instance, biocompatibility is a highly desirable property for which naturally-derived polymers are renowned. While generally applied separately, the use of biomaterials, in particular natural polymers, is likely to change, as biomaterial research moves towards mixing different types of materials in order to maximize their individual strengths. This review focuses on osteoconductive biocomposite scaffolds which are constructed around natural polymers and their performance at the in vitro/in vivo stages and in clinical trials.
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Affiliation(s)
- K Jahan
- Faculty of Dentistry, McGill University, 3640 University Street, Montreal, QC H3A 2B2, Canada.
| | - M Tabrizian
- Faculty of Dentistry, McGill University, 3640 University Street, Montreal, QC H3A 2B2, Canada. and Biomedical Engineering, Duff Medical Building, Room 313, McGill, Montreal, H3A 2B4, Canada
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45
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Heileman KL, Tabrizian M. Dielectric spectroscopy platform to measure MCF10A epithelial cell aggregation as a model for spheroidal cell cluster analysis. Analyst 2017; 142:1601-1607. [DOI: 10.1039/c6an02156e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A platform using planar electrodes to non-invasively monitor cell aggregation in a 3-dimensional extracellular matrix with dielectric spectroscopy.
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Affiliation(s)
- K. L. Heileman
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
| | - M. Tabrizian
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
- Faculty of Dentistry
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Heileman KL, Daoud J, Tabrizian M. Elaboration of a finite element model of pancreatic islet dielectric response to gap junction expression and insulin release. Colloids Surf B Biointerfaces 2016; 148:474-480. [PMID: 27665380 DOI: 10.1016/j.colsurfb.2016.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 05/30/2016] [Revised: 09/07/2016] [Accepted: 09/08/2016] [Indexed: 12/23/2022]
Abstract
Dielectric spectroscopy could potentially be a powerful tool to monitor isolated human pancreatic islets for applications in diabetes therapy and research. Isolated intact human islets provide the most relevant means to understand the cellular and molecular mechanisms associated with diabetes. The advantages of dielectric spectroscopy for continuous islet monitoring are that it is a non-invasive, inexpensive and real-time technique. We have previously assessed the dielectric response of human islet samples during stimulation and differentiation. Because of the complex geometry of islets, analytical solutions are not sufficiently representative to provide a pertinent model of islet dielectric response. Here, we present a finite element dielectric model of a single intact islet that takes into account the tight packing of islet cells and intercellular junctions. The simulation yielded dielectric spectra characteristic of cell aggregates, similar to those produced with islets. In addition, the simulation showed that both exocytosis, such as what occurs during insulin secretion, and differential gap junction expression have significant effects on islet dielectric response. Since the progression of diabetes has some connections with dysfunctional islet gap junctions and insulin secretion, the ability to monitor these islet features with dielectric spectroscopy would benefit diabetes research.
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Affiliation(s)
| | | | - Maryam Tabrizian
- Biomedical Engineering Department, Canada; Faculty of Dentistry, McGill University, Montreal, Quebec H3A 2B4, Canada.
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Felfoul O, Mohammadi M, Taherkhani S, de Lanauze D, Xu YZ, Loghin D, Essa S, Jancik S, Houle D, Lafleur M, Gaboury L, Tabrizian M, Kaou N, Atkin M, Vuong T, Batist G, Beauchemin N, Radzioch D, Martel S. Magneto-aerotactic bacteria deliver drug-containing nanoliposomes to tumour hypoxic regions. Nat Nanotechnol 2016; 11:941-947. [PMID: 27525475 PMCID: PMC6094936 DOI: 10.1038/nnano.2016.137] [Citation(s) in RCA: 536] [Impact Index Per Article: 67.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 06/24/2016] [Indexed: 05/06/2023]
Abstract
Oxygen-depleted hypoxic regions in the tumour are generally resistant to therapies. Although nanocarriers have been used to deliver drugs, the targeting ratios have been very low. Here, we show that the magneto-aerotactic migration behaviour of magnetotactic bacteria, Magnetococcus marinus strain MC-1 (ref. 4), can be used to transport drug-loaded nanoliposomes into hypoxic regions of the tumour. In their natural environment, MC-1 cells, each containing a chain of magnetic iron-oxide nanocrystals, tend to swim along local magnetic field lines and towards low oxygen concentrations based on a two-state aerotactic sensing system. We show that when MC-1 cells bearing covalently bound drug-containing nanoliposomes were injected near the tumour in severe combined immunodeficient beige mice and magnetically guided, up to 55% of MC-1 cells penetrated into hypoxic regions of HCT116 colorectal xenografts. Approximately 70 drug-loaded nanoliposomes were attached to each MC-1 cell. Our results suggest that harnessing swarms of microorganisms exhibiting magneto-aerotactic behaviour can significantly improve the therapeutic index of various nanocarriers in tumour hypoxic regions.
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Affiliation(s)
- Ouajdi Felfoul
- NanoRobotics Laboratory, Dept. of Computer and Software Eng., Inst. of Biomedical Eng., Polytechnique Montréal, Montréal, Canada
| | - Mahmood Mohammadi
- NanoRobotics Laboratory, Dept. of Computer and Software Eng., Inst. of Biomedical Eng., Polytechnique Montréal, Montréal, Canada
| | - Samira Taherkhani
- NanoRobotics Laboratory, Dept. of Computer and Software Eng., Inst. of Biomedical Eng., Polytechnique Montréal, Montréal, Canada
- Dept. of Biomedical Eng., McGill University, Montréal, Canada
| | - Dominic de Lanauze
- NanoRobotics Laboratory, Dept. of Computer and Software Eng., Inst. of Biomedical Eng., Polytechnique Montréal, Montréal, Canada
| | | | - Dumitru Loghin
- NanoRobotics Laboratory, Dept. of Computer and Software Eng., Inst. of Biomedical Eng., Polytechnique Montréal, Montréal, Canada
| | - Sherief Essa
- Dept. of Chemistry, University of Montréal (UdM), Montréal, Canada
- Dept. of Biomedical Eng., McGill University, Montréal, Canada
| | | | - Daniel Houle
- McGill University Health Centre, Montréal, Canada
| | - Michel Lafleur
- Dept. of Chemistry, University of Montréal (UdM), Montréal, Canada
| | - Louis Gaboury
- Institute for Research in Immunology and Cancer (IRIC), Dept. of Pathology and Cell Biology, University of Montréal, Montréal, Canada
| | - Maryam Tabrizian
- Dept. of Biomedical Eng., McGill University, Montréal, Canada
- Faculty of Dentistry, McGill University, Montréal, Canada
| | - Neila Kaou
- NanoRobotics Laboratory, Dept. of Computer and Software Eng., Inst. of Biomedical Eng., Polytechnique Montréal, Montréal, Canada
| | - Michael Atkin
- NanoRobotics Laboratory, Dept. of Computer and Software Eng., Inst. of Biomedical Eng., Polytechnique Montréal, Montréal, Canada
| | - Té Vuong
- Segal Cancer Centre, Jewish General Hospital, Dept. of Oncology, McGill University, Montréal, Canada
| | - Gerald Batist
- Segal Cancer Centre, Jewish General Hospital, Dept. of Oncology, McGill University, Montréal, Canada
| | - Nicole Beauchemin
- Rosalind and Morris Goodman Cancer Research Centre, Dept. of Biochemistry, Medicine and Oncology, McGill University, Montréal, Canada
| | | | - Sylvain Martel
- NanoRobotics Laboratory, Dept. of Computer and Software Eng., Inst. of Biomedical Eng., Polytechnique Montréal, Montréal, Canada
- Corresponding author ()
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48
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Tabrizian M. Expression of Concern: Nanodimensional and Nanocrystalline Apatites and Other Calcium Orthophosphates in Biomedical Engineering, Biology and Medicine. Materials 2009, 2, 1975-2045. Materials (Basel) 2016; 9:ma9090752. [PMID: 28773871 PMCID: PMC5457100 DOI: 10.3390/ma9090752] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 09/01/2016] [Accepted: 09/01/2016] [Indexed: 11/16/2022]
Abstract
We wish to make readers aware that the text in the published paper [1] contains substantial overlap with a previous paper by the same author [2].[...].
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Affiliation(s)
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine/Faculty of Dentistry, Duff Medical Science Building, Room 313, 3775 University Street, Montreal, QC H3A 2B4, Canada;
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Abstract
Following the development of microfluidic systems, there has been a high tendency towards developing lab-on-a-chip devices for biochemical applications. A great deal of effort has been devoted to improve and advance these devices with the goal of performing complete sets of biochemical assays on the device and possibly developing portable platforms for point of care applications. Among the different microfluidic systems used for such a purpose, digital microfluidics (DMF) shows high flexibility and capability of performing multiplex and parallel biochemical operations, and hence, has been considered as a suitable candidate for lab-on-a-chip applications. In this review, we discuss the most recent advances in the DMF platforms, and evaluate the feasibility of developing multifunctional packages for performing complete sets of processes of biochemical assays, particularly for point-of-care applications. The progress in the development of DMF systems is reviewed from eight different aspects, including device fabrication, basic fluidic operations, automation, manipulation of biological samples, advanced operations, detection, biological applications, and finally, packaging and portability of the DMF devices. Success in developing the lab-on-a-chip DMF devices will be concluded based on the advances achieved in each of these aspects.
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Affiliation(s)
- Ehsan Samiei
- School of Engineering, University of British Columbia, 3333 University Way, Kelowna, BC V1V 1V7, Canada.
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Ghadakzadeh S, Mekhail M, Aoude A, Tabrizian M, Hamdy RC. Small Players Ruling the Hard Game: siRNA in Bone Regeneration. J Bone Miner Res 2016; 31:1481. [PMID: 27377771 DOI: 10.1002/jbmr.2860] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 04/22/2016] [Indexed: 11/10/2022]
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