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Mucke HA. Patent Highlights April-May 2023. Pharm Pat Anal 2023; 12:253-259. [PMID: 38197382 DOI: 10.4155/ppa-2023-0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
A snapshot of noteworthy recent developments in the patent literature of relevance to pharmaceutical and medical research and development.
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Salem BAA, ElKaliny HH, El-Hafez AAAA, Sarhan NI. Comparative Histological Study of Therapeutic Effect of Mesenchymal Stem Cells versus Mesenchymal Stem Cells Co-Cultured with Liver Tissue on Carbon Tetrachloride-Induced Hepatotoxicity in Adult Male Albino Rats. J Microsc Ultrastruct 2023; 11:225-236. [PMID: 38213650 PMCID: PMC10779448 DOI: 10.4103/jmau.jmau_62_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/02/2021] [Accepted: 08/02/2021] [Indexed: 11/04/2022] Open
Abstract
Context Liver diseases are major causes of morbidity and mortality. Mesenchymal stem cells (MSCs) have immunomodulatory, anti-inflammatory, and antifibrotic effects, so they can be used in the treatment of liver diseases. MSCs co-cultured with diseased liver tissue improve the homing capacity, survival rate, and paracrine effects of the MSCs, as well as the ability to enhance liver function. Aims This work aimed to study the therapeutic effect of MSCs versus MSCs co-cultured with liver tissue on carbon tetrachloride (CCl4)-induced hepatotoxicity in adult male albino rats. Settings and Design Twenty adult male albino rats were divided into four equal groups; Group I (control group), Group II received CCl4 intraperitoneally (i.p.), Group III received CCl4 i.p. and then injected with MSCs intravenously (i.v.), and Group IV received CCl4 i.p. and then injected with co-cultured MSCs i.v. Materials and Methods Finally, liver specimens were processed for light microscopy (LM) and electron microscopy (EM). Statistical analysis was carried out to assess histological scoring, area percentage of collagen fibers, number of glial fibrillary acidic protein-positive cells, and biochemical analysis of alanine aminotransferase and aspartate aminotransferase. Statistical Analysis Used Statistical analysis of (histological scoring, area % of collagen fibers, and biochemical analysis) was done by using one-way analysis of variance (ANOVA) test using graphpad software (SanDiego, CA, USA). The means ± standard deviations were used for statistical analysis. Results LM of Group II revealed loss of hepatic architecture and diffuse fibrosis with dilated congested blood vessels, bile ductular proliferation, and cellular infiltrations. Vacuolated cytoplasm with or without pyknotic nuclei was observed in addition to micro- and macro-steatosis. EM demonstrated disfigured hepatocytes with abnormal organelles surrounding atypical nucleus. Group III showed restoration of the normal liver architecture with greater extent in Group IV. Statistical analysis confirmed the microscopic findings. Conclusions Co-cultured MSCs with diseased liver tissue augmented the therapeutic effects of MSCs in treating hepatotoxicity induced by CCl4 in adult male albino rats.
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Affiliation(s)
- Bothina Abo-Alazm Salem
- Department of Histology and Cell Biology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Heba Hassan ElKaliny
- Department of Histology and Cell Biology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | | | - Naglaa Ibrahim Sarhan
- Department of Histology and Cell Biology, Faculty of Medicine, Tanta University, Tanta, Egypt
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Illek B, Fischer H, Machen TE, Hari G, Clemons KV, Sass G, Ferreira JAG, Stevens DA. Protective role of CFTR during fungal infection of cystic fibrosis bronchial epithelial cells with Aspergillus fumigatus. Front Cell Infect Microbiol 2023; 13:1196581. [PMID: 37680748 PMCID: PMC10482090 DOI: 10.3389/fcimb.2023.1196581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 06/19/2023] [Indexed: 09/09/2023] Open
Abstract
Lung infection with the fungus Aspergillus fumigatus (Af) is a common complication in cystic fibrosis (CF) and is associated with loss of pulmonary function. We established a fungal epithelial co-culture model to examine the impact of Af infection on CF bronchial epithelial barrier function using Af strains 10AF and AF293-GFP, and the CFBE41o- cell line homozygous for the F508del mutation with (CF+CFTR) and without (CF) normal CFTR expression. Following exposure of the epithelial surface to Af conidia, formation of germlings (early stages of fungal growth) was detected after 9-12 hours and hyphae (mature fungal growth) after 12-24 hours. During fungal morphogenesis, bronchial epithelial cells showed signs of damage including rounding, and partial detachment after 24 hours. Fluorescently labeled conidia were internalized after 6 hours and more internalized conidia were observed in CF compared to CF+CFTR cells. Infection of the apical surface with 10AF conidia, germlings, or hyphae was performed to determine growth stage-specific effects on tight junction protein zona occludens protein 1 (ZO-1) expression and transepithelial electrical resistance (TER). In response to infection with conidia or germlings, epithelial barrier function degraded time-dependently (based on ZO-1 immunofluorescence and TER) with a delayed onset in CF+CFTR cell monolayers and required viable fungi and apical application. Infection with hyphae caused an earlier onset and faster rate of decline in TER compared to conidia and germlings. Gliotoxin, a major Af virulence factor, caused a rapid decline in TER and induced a transient chloride secretory response in CF+CFTR but not CF cells. Our findings suggest growth and internalization of Af result in deleterious effects on bronchial epithelial barrier function that occurred more rapidly in the absence of CFTR. Bronchial epithelial barrier breakdown was time-dependent and morphotype-specific and mimicked by acute administration of gliotoxin. Our study also suggests a protective role for CFTR by turning on CFTR-dependent chloride transport in response to gliotoxin, a mechanism that will support mucociliary clearance, and could delay the loss of epithelial integrity during fungal development in vivo.
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Affiliation(s)
- Beate Illek
- UCSF Benioff Children's Hospital Oakland, Children's Hospital Oakland Research Institute, Oakland, CA, United States
| | - Horst Fischer
- UCSF Benioff Children's Hospital Oakland, Children's Hospital Oakland Research Institute, Oakland, CA, United States
| | - Terry E. Machen
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA, United States
| | - Gopika Hari
- UCSF Benioff Children's Hospital Oakland, Children's Hospital Oakland Research Institute, Oakland, CA, United States
| | - Karl V. Clemons
- California Institute for Medical Research, San Jose, CA, United States
- Division of Infectious Diseases and Geographic Medicine, Stanford University Medical School, Stanford, CA, United States
| | - Gabriele Sass
- California Institute for Medical Research, San Jose, CA, United States
| | - Jose A. G. Ferreira
- California Institute for Medical Research, San Jose, CA, United States
- Division of Infectious Diseases and Geographic Medicine, Stanford University Medical School, Stanford, CA, United States
| | - David A. Stevens
- California Institute for Medical Research, San Jose, CA, United States
- Division of Infectious Diseases and Geographic Medicine, Stanford University Medical School, Stanford, CA, United States
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Alobaid MA. Optimizing the viability, stability, and potency of Buffy coat isolated T cells for homologous dendritic cell co-cultures: A method for handling and preservation. J Immunol Methods 2023; 515:113454. [PMID: 36878423 DOI: 10.1016/j.jim.2023.113454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 02/27/2023] [Accepted: 03/02/2023] [Indexed: 03/07/2023]
Abstract
The utilization of T cells is becoming increasingly prominent in both clinical and research domains. However, the need to optimize preservation methodologies for extended periods of time remains unmet. To address this issue, we have developed a protocol for the handling and preservation of T cells that facilitates successful donor homologous co-cultures with dendritic cells (DCs), and preserves the cells for subsequent testing. Our method enhances experimental efficiency by reducing time and effort, and simplifying the use of T cells in mono or co-cultures. Our T cell handling and preservation methodology demonstrates the stability and viability of these cells in co-cultures, with viability exceeding 93% before and after liquid nitrogen preservation. Additionally, the preserved cells display no unspecific activation, as evidenced by the unaltered expression of the T cell activation marker CD25. The proliferation profile of preserved T cells used in DC-T cell co-cultures, stimulated by lipopolysaccharide (LPS)-activated DCs, attests to the potency and ability of these cells to interact and proliferate. These findings underscore the efficacy of our handling and preservation methodology in maintaining T cell viability and stability. Preserving donor T cells not only reduces the inconvenience of repeated blood donations but also enhances accessibility to a particular population of T cells for experimental or clinical applications, such as chimeric antigen receptor T cells.
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Affiliation(s)
- Meshal A Alobaid
- Immunology & Allergy, American International University, Al-Jahra, Saad Al Abdullah, 8MCR+6W, Kuwait.
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5
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Becker-Greene D, Li H, Perez-Cremades D, Wu W, Bestepe F, Ozdemir D, Niosi CE, Aydogan C, Orgill DP, Feinberg MW, Icli B. MiR-409-3p targets a MAP4K3-ZEB1-PLGF signaling axis and controls brown adipose tissue angiogenesis and insulin resistance. Cell Mol Life Sci 2021; 78:7663-7679. [PMID: 34698882 PMCID: PMC8655847 DOI: 10.1007/s00018-021-03960-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/09/2021] [Accepted: 09/29/2021] [Indexed: 10/20/2022]
Abstract
Endothelial cells (ECs) within the microvasculature of brown adipose tissue (BAT) are important in regulating the plasticity of adipocytes in response to increased metabolic demand by modulating the angiogenic response. However, the mechanism of EC-adipocyte crosstalk during this process is not completely understood. We used RNA sequencing to profile microRNAs derived from BAT ECs of obese mice and identified an anti-angiogenic microRNA, miR-409-3p. MiR-409-3p overexpression inhibited EC angiogenic properties; whereas, its inhibition had the opposite effects. Mechanistic studies revealed that miR-409-3p targets ZEB1 and MAP4K3. Knockdown of ZEB1/MAP4K3 phenocopied the angiogenic effects of miR-409-3p. Adipocytes co-cultured with conditioned media from ECs deficient in miR-409-3p showed increased expression of BAT markers, UCP1 and CIDEA. We identified a pro-angiogenic growth factor, placental growth factor (PLGF), released from ECs in response to miR-409-3p inhibition. Deficiency of ZEB1 or MAP4K3 blocked the release of PLGF from ECs and PLGF stimulation of 3T3-L1 adipocytes increased UCP1 expression in a miR-409-3p dependent manner. MiR-409-3p neutralization improved BAT angiogenesis, glucose and insulin tolerance, and energy expenditure in mice with diet-induced obesity. These findings establish miR-409-3p as a critical regulator of EC-BAT crosstalk by modulating a ZEB1-MAP4K3-PLGF signaling axis, providing new insights for therapeutic intervention in obesity.
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Affiliation(s)
- Dakota Becker-Greene
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Louis Pasteur Avenue 77, Boston, MA, 02115, USA
| | - Hao Li
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Louis Pasteur Avenue 77, Boston, MA, 02115, USA
| | - Daniel Perez-Cremades
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Louis Pasteur Avenue 77, Boston, MA, 02115, USA
- Department of Physiology, University of Valencia and INCLIVA Biomedical Research Institute, Valencia, Spain
| | - Winona Wu
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Louis Pasteur Avenue 77, Boston, MA, 02115, USA
| | - Furkan Bestepe
- Molecular Cardiology Research Institute, Tufts University School of Medicine, 800 Washington St, Boston, MA, 02111, USA
| | - Denizhan Ozdemir
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Louis Pasteur Avenue 77, Boston, MA, 02115, USA
- Department of Medical Biology, Hacettepe University, Ankara, Turkey
| | - Carolyn E Niosi
- Molecular Cardiology Research Institute, Tufts University School of Medicine, 800 Washington St, Boston, MA, 02111, USA
| | - Ceren Aydogan
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Louis Pasteur Avenue 77, Boston, MA, 02115, USA
- Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - Dennis P Orgill
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Mark W Feinberg
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Louis Pasteur Avenue 77, Boston, MA, 02115, USA.
| | - Basak Icli
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Louis Pasteur Avenue 77, Boston, MA, 02115, USA.
- Molecular Cardiology Research Institute, Tufts University School of Medicine, 800 Washington St, Boston, MA, 02111, USA.
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Ren Y, Zhang S, Wang Y, Jacobson DS, Reisdorf RL, Kuroiwa T, Behfar A, Moran SL, Steinmann SP, Zhao C. Effects of purified exosome product on rotator cuff tendon-bone healing in vitro and in vivo. Biomaterials 2021; 276:121019. [PMID: 34325337 PMCID: PMC9707649 DOI: 10.1016/j.biomaterials.2021.121019] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 06/28/2021] [Accepted: 07/08/2021] [Indexed: 01/02/2023]
Abstract
Exosomes have multiple therapeutic targets, but the effects on healing rotator cuff tear (RCT) remain unclear. As a circulating exosome, purified exosome product (PEP) has the potential to lead to biomechanical improvement in RCT. Here, we have established a simple and efficient approach that identifies the function and underlying mechanisms of PEP on cell-cell interaction using a co-culture model in vitro. In the in vivo trial, adult female Sprague-Dawley rats underwent unilateral surgery to transect and repair the supraspinatus tendon to its insertion site with or without PEP. PEP promoted the migration and confluence of osteoblast cells and tenocytes, especially during direct cell-cell contact. Expression of potential genes for RCT in vitro and in vivo models were consistent with biomechanical tests and semiquantitative histologic scores, indicating accelerated strength and healing of the RC in response to PEP. Our observations suggest that circulating exosomes provide an effective option to improve the healing speed of RCT after surgical repair. The regeneration of enthesis following PEP treatment appears to be related to a mutually reinforcing relationship between direct cell-cell contact and PEP activity, suggesting a dual approach to the healing process.
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Affiliation(s)
- Ye Ren
- Department of Orthopedic Surgery, Mayo Clinic Rochester, Rochester, MN, USA; Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shuwei Zhang
- Department of Orthopedic Surgery, Mayo Clinic Rochester, Rochester, MN, USA
| | - Yicun Wang
- Department of Orthopedic Surgery, Mayo Clinic Rochester, Rochester, MN, USA
| | - Daniel S Jacobson
- Department of Orthopedic Surgery, Mayo Clinic Rochester, Rochester, MN, USA
| | - Ramona L Reisdorf
- Department of Orthopedic Surgery, Mayo Clinic Rochester, Rochester, MN, USA
| | - Tomoyuki Kuroiwa
- Department of Orthopedic Surgery, Mayo Clinic Rochester, Rochester, MN, USA
| | - Atta Behfar
- Department of Cardiovascular Medicine, Center for Regenerative Medicine, William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic Rochester, MN, USA
| | - Steven L Moran
- Department of Orthopedic Surgery, Mayo Clinic Rochester, Rochester, MN, USA
| | - Scott P Steinmann
- Department of Orthopedic Surgery, University of Tennessee Health Science Center College of Medicine, Chattanooga, TN, USA
| | - Chunfeng Zhao
- Department of Orthopedic Surgery, Mayo Clinic Rochester, Rochester, MN, USA.
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Jaberi A, Esfahani AM, Aghabaglou F, Park JS, Ndao S, Tamayol A, Yang R. Microfluidic Systems with Embedded Cell Culture Chambers for High-Throughput Biological Assays. ACS APPLIED BIO MATERIALS 2020; 3:6661-6671. [PMID: 35019392 PMCID: PMC10081828 DOI: 10.1021/acsabm.0c00439] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The ability to generate chemical and mechanical gradients on chips is important for either creating biomimetic designs or enabling high-throughput assays. However, there is still a significant knowledge gap in the generation of mechanical and chemical gradients in a single device. In this study, we developed gradient-generating microfluidic circuits with integrated microchambers to allow cell culture and to introduce chemical and mechanical gradients to cultured cells. A chemical gradient is generated across the microchambers, exposing cells to a uniform concentration of drugs. The embedded microchamber also produces a mechanical gradient in the form of varied shear stresses induced upon cells among different chambers as well as within the same chamber. Cells seeded within the chambers remain viable and show a normal morphology throughout the culture time. To validate the effect of different drug concentrations and shear stresses, doxorubicin is flowed into chambers seeded with skin cancer cells at different flow rates (from 0 to 0.2 μL/min). The experimental results show that increasing doxorubicin concentration (from 0 to 30 μg/mL) within chambers not only prohibits cell growth but also induces cell death. In addition, the increased shear stress (0.005 Pa) at high flow rates poses a synergistic effect on cell viability by inducing cell damage and detachment. Moreover, the ability of the device to seed cells in a 3D microenvironment was also examined and confirmed. Collectively, the study demonstrates the potential of microchamber-embedded microfluidic gradient generators in 3D cell culture and high-throughput drug screening.
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Affiliation(s)
- Arian Jaberi
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Amir Monemian Esfahani
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Fariba Aghabaglou
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Jae Sung Park
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Sidy Ndao
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
| | - Ali Tamayol
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
| | - Ruiguo Yang
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE 68588, USA
- Nebraska Center for Integrated Biomolecular Communications (NCIBC), University of Nebraska-Lincoln, Lincoln, NE 68516, USA
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, USA
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8
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Ramadan Q, Gourikutty SBN, Zhang Q. OOCHIP: Compartmentalized Microfluidic Perfusion System with Porous Barriers for Enhanced Cell-Cell Crosstalk in Organ-on-a-Chip. MICROMACHINES 2020; 11:mi11060565. [PMID: 32486495 PMCID: PMC7344814 DOI: 10.3390/mi11060565] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/30/2020] [Accepted: 05/30/2020] [Indexed: 12/28/2022]
Abstract
Improved in vitro models of human organs for predicting drug efficacy, interactions, and disease modelling are crucially needed to minimize the use of animal models, which inevitably display significant differences from the human disease state and metabolism. Inside the body, cells are organized either in direct contact or in close proximity to other cell types in a tightly controlled architecture that regulates tissue function. To emulate this cellular interface in vitro, an advanced cell culture system is required. In this paper, we describe a set of compartmentalized silicon-based microfluidic chips that enable co-culturing several types of cells in close proximity with enhanced cell–cell interaction. In vivo-like fluid flow into and/or from each compartment, as well as between adjacent compartments, is maintained by micro-engineered porous barriers. This porous structure provides a tool for mimicking the paracrine exchange between cells in the human body. As a demonstrating example, the microfluidic system was tested by culturing human adipose tissue that is infiltrated with immune cells to study the role if the interplay between the two cells in the context of type 2 diabetes. However, the system provides a platform technology for mimicking the structure and function of single- and multi-organ models, which could significantly narrow the gap between in vivo and in vitro conditions.
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Affiliation(s)
- Qasem Ramadan
- Agency for Science, Technology and Research, 2 Fusionopolis Way, #08-02, Innovis Tower, Singapore 138635, Singapore; (S.B.N.G.); (Q.Z.)
- College of Science and General Studies, Alfaisal University, Riyadh 11533, Saudi Arabia
- Correspondence:
| | | | - Qingxin Zhang
- Agency for Science, Technology and Research, 2 Fusionopolis Way, #08-02, Innovis Tower, Singapore 138635, Singapore; (S.B.N.G.); (Q.Z.)
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Borciani G, Montalbano G, Baldini N, Cerqueni G, Vitale-Brovarone C, Ciapetti G. Co-culture systems of osteoblasts and osteoclasts: Simulating in vitro bone remodeling in regenerative approaches. Acta Biomater 2020; 108:22-45. [PMID: 32251782 DOI: 10.1016/j.actbio.2020.03.043] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 03/20/2020] [Accepted: 03/30/2020] [Indexed: 02/08/2023]
Abstract
Bone is an extremely dynamic tissue, undergoing continuous remodeling for its whole lifetime, but its regeneration or augmentation due to bone loss or defects are not always easy to obtain. Bone tissue engineering (BTE) is a promising approach, and its success often relies on a "smart" scaffold, as a support to host and guide bone formation through bone cell precursors. Bone homeostasis is maintained by osteoblasts (OBs) and osteoclasts (OCs) within the basic multicellular unit, in a consecutive cycle of resorption and formation. Therefore, a functional scaffold should allow the best possible OB/OC cooperation for bone remodeling, as happens within the bone extracellular matrix in the body. In the present work OB/OC co-culture models, with and without scaffolds, are reviewed. These experimental systems are intended for different targets, including bone remodeling simulation, drug testing and the assessment of biomaterials and 3D scaffolds for BTE. As a consequence, several parameters, such as cell type, cell ratio, culture medium and inducers, culture times and setpoints, assay methods, etc. vary greatly. This review identifies and systematically reports the in vitro methods explored up to now, which, as they allow cellular communication, more closely resemble bone remodeling and/or the regeneration process in the framework of BTE. STATEMENT OF SIGNIFICANCE: Bone is a dynamic tissue under continuous remodeling, but spontaneous healing may fail in the case of excessive bone loss which often requires valid alternatives to conventional treatments to restore bone integrity, like bone tissue engineering (BTE). Pre-clinical evaluation of scaffolds for BTE requires in vitro testing where co-cultures combining innovative materials with osteoblasts (OBs) and osteoclasts (OCs) closely mimic the in vivo repair process. This review considers the direct and indirect OB/OC co-cultures relevant to BTE, from the early mouse-cell models to the recent bone regenerative systems. The co-culture modeling of bone microenvironment provides reliable information on bone cell cross-talk. Starting from improved knowledge on bone remodeling, bone disease mechanisms may be understood and new BTE solutions are designed.
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Thélu A, Catoire S, Kerdine-Römer S. Immune-competent in vitro co-culture models as an approach for skin sensitisation assessment. Toxicol In Vitro 2020; 62:104691. [DOI: 10.1016/j.tiv.2019.104691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 10/05/2019] [Accepted: 10/14/2019] [Indexed: 12/21/2022]
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11
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Lei Y, Goldblatt ZE, Billiar KL. Micromechanical Design Criteria for Tissue-Engineering Biomaterials. Biomater Sci 2020. [DOI: 10.1016/b978-0-12-816137-1.00083-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Scalzone A, Ferreira AM, Tonda-Turo C, Ciardelli G, Dalgarno K, Gentile P. The interplay between chondrocyte spheroids and mesenchymal stem cells boosts cartilage regeneration within a 3D natural-based hydrogel. Sci Rep 2019; 9:14630. [PMID: 31601910 PMCID: PMC6787336 DOI: 10.1038/s41598-019-51070-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 09/25/2019] [Indexed: 12/30/2022] Open
Abstract
Articular cartilage (AC) lacks the ability to self-repair and cell-based approaches, primarily based on using chondrocytes and mesenchymal stem cells (MSCs), are emerging as effective technology to restore cartilage functionality, because cells synergic functionality may support the maintenance of chondrogenic phenotype and promote extracellular matrix regeneration. This work aims to develop a more physiologically representative co-culture system to investigate the influence of MSCs on the activity of chondrocytes. A thermo-sensitive chitosan-based hydrogel, ionically crosslinked with β-glycerophosphate, is optimised to obtain sol/gel transition at physiological conditions within 5 minutes, high porosity with pores diameter <30 µm, and in vitro mechanical integrity with compressive and equilibrium Young's moduli of 37 kPa and 17 kPa, respectively. Live/dead staining showed that after 1 and 3 days in culture, the encapsulated MSCs into the hydrogels are viable and characterised by round-like morphology. Furthermore chondrocyte spheroids, seeded on top of gels that contained either MSCs or no cells, show that the encapsulated MSCs stimulate chondrocyte activity within a gel co-culture, both in terms of maintaining the coherence of chondrocyte spheroids, leading to a larger quantity of CD44 (by immunofluorescence) and a higher production of collagen and glycosaminoglycans (by histology) compared with the mono-culture.
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Affiliation(s)
- Annachiara Scalzone
- School of Engineering, Newcastle University, Claremont Road, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Ana M Ferreira
- School of Engineering, Newcastle University, Claremont Road, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Chiara Tonda-Turo
- Department of Mechanical and Aerospace Engineering (DIMEAS), Politecnico di Torino Corso Duca degli Abruzzi 29, Turin, 10129, Italy
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering (DIMEAS), Politecnico di Torino Corso Duca degli Abruzzi 29, Turin, 10129, Italy
| | - Kenny Dalgarno
- School of Engineering, Newcastle University, Claremont Road, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Piergiorgio Gentile
- School of Engineering, Newcastle University, Claremont Road, Newcastle upon Tyne, NE1 7RU, United Kingdom.
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Serasanambati M, Broza YY, Haick H. Volatile Compounds Are Involved in Cellular Crosstalk and Upregulation. ACTA ACUST UNITED AC 2019; 3:e1900131. [PMID: 32648725 DOI: 10.1002/adbi.201900131] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/16/2019] [Indexed: 12/14/2022]
Abstract
Cell-cell cross talk is of great importance in cancer research due to its major role in proliferation, differentiation, migration, and influence on the apoptotic pathway. Different cell-cell communication mechanisms have come mainly from proteomic and genomic approaches. In this paper, a new route is reported for cross talk between cancer cells that occurs, even when they are far away from each other. Single-cell and culture analysis shows that upregulation of cancer cells emits hundreds of volatile organic compounds (VOCs) into their headspace. Part of the VOCs remains without any change, disregarding the biological environment around it. The other part of the VOCs is exchanged between monocultures of the cells as well as between co-cultures of the cells with no physical contact between them, leading to different changes in growth than when left on their own. The chemical nature and composition of these VOCs have been determined and are discussed herein. Cell-to-cell cross talk has the advantage of being suitable for transfer/diffusion over relatively long distances. It would thus be expected to serve as a shuttling pad toward the development of advanced approaches that could enable very early detection of cancer and/or monitoring of metastasis and related cancer therapy.
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Affiliation(s)
- Mamatha Serasanambati
- Department of Chemical Engineering, Technion - Israel Institute of Technology, Technion City, Haifa, 3200003, Israel
| | - Yoav Y Broza
- Department of Chemical Engineering, Technion - Israel Institute of Technology, Technion City, Haifa, 3200003, Israel
| | - Hossam Haick
- Department of Chemical Engineering, Technion - Israel Institute of Technology, Technion City, Haifa, 3200003, Israel.,Russell Berries Nanotechnology Institute, Technion - Israel Institute of Technology, Technion City, Haifa, 3200003, Israel.,Technion Integrated Cancer Center, The Ruth and Bruce Rappaport Faculty of Medicine, 1-Efron St. Bat Galim, Haifa, 3525433, Israel
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14
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AbuSamra DB, Mauris J, Argüeso P. Galectin-3 initiates epithelial-stromal paracrine signaling to shape the proteolytic microenvironment during corneal repair. Sci Signal 2019; 12:12/590/eaaw7095. [PMID: 31311846 DOI: 10.1126/scisignal.aaw7095] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Paracrine interactions between epithelial cells and stromal fibroblasts occur during tissue repair, development, and cancer. Crucial to these processes is the production of matrix metalloproteinases (MMPs) that modify the microenvironment. Here, we demonstrated that the carbohydrate-binding protein galectin-3 stimulated microenvironment remodeling in the cornea by promoting the paracrine action of secreted interleukin-1β (IL-1β). Through live cell imaging in vitro, we observed rapid activation of the MMP9 promoter in clusters of cultured human epithelial cells after direct heterotypic contact with single primary human fibroblasts. Soluble recombinant galectin-3 and endogenous galectin-3 of epithelial origin both stimulated MMP9 activity through the induction of IL-1β secretion by fibroblasts. In vivo, mechanical disruption of the basement membrane in wounded corneas prompted an increase in the abundance of IL-1β in the stroma and increased the amount of gelatinase activity in the epithelium. Moreover, corneas of galectin-3-deficient mice failed to stimulate IL-1β after wounding. This mechanism of paracrine control has broad importance for our understanding of how the proteolytic microenvironment is modified in epithelial-stromal interactions.
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Affiliation(s)
- Dina B AbuSamra
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Jérôme Mauris
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Pablo Argüeso
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA.
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15
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Liu Y, Kongsuphol P, Chiam SY, Zhang QX, Gourikutty SBN, Saha S, Biswas SK, Ramadan Q. Adipose-on-a-chip: a dynamic microphysiological in vitro model of the human adipose for immune-metabolic analysis in type II diabetes. LAB ON A CHIP 2019; 19:241-253. [PMID: 30566152 DOI: 10.1039/c8lc00481a] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Infiltration of immune cells into adipose tissue is associated with chronic low-grade inflammation in obese individuals. To better understand the crosstalk between immune cells and adipocytes, in vivo-like in vitro models are required. Conventionally transwell culture plates are used for studying the adipocyte-immune cell interaction; however, the static culture nature of this approach falls short of closely recapitulating the physiological environment. Here we present a compartmentalized microfluidic co-culture system which provides a constant-rate of nutrient supply as well as waste removal, resembling the microvascular networks of the in vivo environment. Human adipocytes and U937 cells were co-cultured in close proximity in an enclosed system. The porous barrier between the adjacent compartments comprises an array of microchannels, which enables paracrine interaction between cells in adjacent compartments and improved perfusion-based long term cell feeding. Human pre-adipocytes were fully differentiated into adipocytes on the chip and remained viable for several weeks. Upon co-culturing with immune cells, adipocytes showed a tendency to develop insulin resistance. The immune-metabolic correlation has been studied by monitoring adiponectin and IL-6 expression, as well as glucose uptake upon treatment with insulin. Our microfluidic system can be potentially used to develop physiologically relevant adipose tissue models to study obesity-associated diseases such as insulin resistance and type 2 diabetes and therefore, facilitate drug development to treat these diseases.
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Affiliation(s)
- Yunxiao Liu
- Institute of Microelectronic, A* STAR (Agency for Science, Technology and Research), 2, Fusionopolis Way, #08-02, Innovis Tower, 138635 Singapore.
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16
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Discrimination between HCV29 and T24 by controlled proliferation of cells co-cultured on substrates with different elasticity. J Mech Behav Biomed Mater 2018; 88:217-222. [DOI: 10.1016/j.jmbbm.2018.08.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/22/2018] [Accepted: 08/26/2018] [Indexed: 12/16/2022]
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17
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Zhu S, Ehnert S, Rouß M, Häussling V, Aspera-Werz RH, Chen T, Nussler AK. From the Clinical Problem to the Basic Research-Co-Culture Models of Osteoblasts and Osteoclasts. Int J Mol Sci 2018; 19:ijms19082284. [PMID: 30081523 PMCID: PMC6121694 DOI: 10.3390/ijms19082284] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/26/2018] [Accepted: 07/31/2018] [Indexed: 12/13/2022] Open
Abstract
Bone tissue undergoes constant remodeling and healing when fracture happens, in order to ensure its structural integrity. In order to better understand open biological and clinical questions linked to various bone diseases, bone cell co-culture technology is believed to shed some light into the dark. Osteoblasts/osteocytes and osteoclasts dominate the metabolism of bone by a multitude of connections. Therefore, it is widely accepted that a constant improvement of co-culture models with both cell types cultured on a 3D scaffold, is aimed to mimic an in vivo environment as closely as possible. Although in recent years a considerable knowledge of bone co-culture models has been accumulated, there are still many open questions. We here try to summarize the actual knowledge and address open questions.
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Affiliation(s)
- Sheng Zhu
- Department of Trauma and Reconstructive Surgery, Siegfried Weller Institute for Trauma Research, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany.
| | - Sabrina Ehnert
- Department of Trauma and Reconstructive Surgery, Siegfried Weller Institute for Trauma Research, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany.
| | - Marc Rouß
- Department of Trauma and Reconstructive Surgery, Siegfried Weller Institute for Trauma Research, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany.
| | - Victor Häussling
- Department of Trauma and Reconstructive Surgery, Siegfried Weller Institute for Trauma Research, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany.
| | - Romina H Aspera-Werz
- Department of Trauma and Reconstructive Surgery, Siegfried Weller Institute for Trauma Research, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany.
| | - Tao Chen
- Department of Trauma and Reconstructive Surgery, Siegfried Weller Institute for Trauma Research, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany.
| | - Andreas K Nussler
- Department of Trauma and Reconstructive Surgery, Siegfried Weller Institute for Trauma Research, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany.
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18
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Wu S, Peng H, Li X, Streubel PN, Liu Y, Duan B. Effect of scaffold morphology and cell co-culture on tenogenic differentiation of HADMSC on centrifugal melt electrospun poly (L‑lactic acid) fibrous meshes. Biofabrication 2017; 9:044106. [PMID: 29134948 PMCID: PMC5849472 DOI: 10.1088/1758-5090/aa8fb8] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Engineered tendon grafts offer a promising alternative for grafting during the reconstruction of complex tendon tears. The tissue-engineered tendon substitutes have the advantage of increased biosafety and the option to customize their biochemical and biophysical properties to promote tendon regeneration. In this study, we developed a novel centrifugal melt electrospinning (CME) technique, with the goal of optimizing the fabrication parameters to generate fibrous scaffolds for tendon tissue engineering. The effects of CME processing parameters, including rotational speed, voltage, and temperature, on fiber properties (i.e. orientation, mean diameter, and productivity) were systematically investigated. By using this solvent-free and environmentally friendly method, we fabricated both random and aligned poly (L-lactic acid) (PLLA) fibrous scaffolds with controllable mesh thickness. We also investigated and compared their morphology, surface hydrophilicity, and mechanical properties. We seeded human adipose derived mesenchymal stem cells (HADMSC) on various PLLA fibrous scaffolds and conditioned the constructs in tenogenic differentiation medium for up to 21 days, to investigate the effects of fiber alignment and scaffold thickness on cell behavior. Aligned fibrous scaffolds induced cell elongation and orientation through a contact guidance phenomenon and promoted HADMSC proliferation and differentiation towards tenocytes. At the early stage, thinner scaffolds were beneficial for HADMSC proliferation, but the scaffold thickness had no significant effects on cell proliferation for longer-term cell culture. We further co-seeded HADMSC and human umbilical vein endothelial cells (HUVEC) on aligned PLLA fibrous mats and determined how the vascularization affected HADMSC tenogenesis. We found that co-cultured HADMSC-HUVEC expressed more tendon-related markers on the aligned fibrous scaffold. The co-culture systems promoted in vitro HADMSC differentiation towards tenocytes. These aligned fibrous scaffolds fabricated by CME technique could potentially be utilized to repair and regenerate tendon defects and injuries with cell co-culture and controlled vascularization.
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Affiliation(s)
- Shaohua Wu
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Hao Peng
- College of Mechanical and Electric Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiuhong Li
- College of Mechanical and Electric Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Philipp N. Streubel
- Department of Orthopedic Surgery and Rehabilitation, University of Nebraska Medical Center, Omaha, NE, USA
| | - Yong Liu
- College of Mechanical and Electric Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Bin Duan
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, USA
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
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Wang PY, Thissen H, Kingshott P. Modulation of human multipotent and pluripotent stem cells using surface nanotopographies and surface-immobilised bioactive signals: A review. Acta Biomater 2016; 45:31-59. [PMID: 27596488 DOI: 10.1016/j.actbio.2016.08.054] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 07/30/2016] [Accepted: 08/30/2016] [Indexed: 02/08/2023]
Abstract
The ability to control the interactions of stem cells with synthetic surfaces is proving to be effective and essential for the quality of passaged stem cells and ultimately the success of regenerative medicine. The stem cell niche is crucial for stem cell self-renewal and differentiation. Thus, mimicking the stem cell niche, and here in particular the extracellular matrix (ECM), in vitro is an important goal for the expansion of stem cells and their applications. Here, surface nanotopographies and surface-immobilised biosignals have been identified as major factors that control stem cell responses. The development of tailored surfaces having an optimum nanotopography and displaying suitable biosignals is proposed to be essential for future stem cell culture, cell therapy and regenerative medicine applications. While early research in the field has been restricted by the limited availability of micro- and nanofabrication techniques, new approaches involving the use of advanced fabrication and surface immobilisation methods are starting to emerge. In addition, new cell types such as induced pluripotent stem cells (iPSCs) have become available in the last decade, but have not been fully understood. This review summarises significant advances in the area and focuses on the approaches that are aimed at controlling the behavior of human stem cells including maintenance of their self-renewal ability and improvement of their lineage commitment using nanotopographies and biosignals. More specifically, we discuss developments in biointerface science that are an important driving force for new biomedical materials and advances in bioengineering aiming at improving stem cell culture protocols and 3D scaffolds for clinical applications. Cellular responses revolve around the interplay between the surface properties of the cell culture substrate and the biomolecular composition of the cell culture medium. Determination of the precise role played by each factor, as well as the synergistic effects amongst the factors, all of which influence stem cell responses is essential for future developments. This review provides an overview of the current state-of-the-art in the design of complex material surfaces aimed at being the next generation of tools tailored for applications in cell culture and regenerative medicine. STATEMENT OF SIGNIFICANCE This review focuses on the effect of surface nanotopographies and surface-bound biosignals on human stem cells. Recently, stem cell research attracts much attention especially the induced pluripotent stem cells (iPSCs) and direct lineage reprogramming. The fast advance of stem cell research benefits disease treatment and cell therapy. On the other hand, surface property of cell adhered materials has been demonstrated very important for in vitro cell culture and regenerative medicine. Modulation of cell behavior using surfaces is costeffective and more defined. Thus, we summarise the recent progress of modulation of human stem cells using surface science. We believe that this review will capture a broad audience interested in topographical and chemical patterning aimed at understanding complex cellular responses to biomaterials.
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