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Mu X, Gu R, Tang M, Wu X, He W, Nie X. IL-17 in wound repair: bridging acute and chronic responses. Cell Commun Signal 2024; 22:288. [PMID: 38802947 PMCID: PMC11129447 DOI: 10.1186/s12964-024-01668-w] [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: 03/07/2024] [Accepted: 05/18/2024] [Indexed: 05/29/2024] Open
Abstract
Chronic wounds, resulting from persistent inflammation, can trigger a cascade of detrimental effects including exacerbating inflammatory cytokines, compromised blood circulation at the wound site, elevation of white blood cell count, increased reactive oxygen species, and the potential risk of bacterial infection. The interleukin-17 (IL-17) signaling pathway, which plays a crucial role in regulating immune responses, has been identified as a promising target for treating inflammatory skin diseases. This review aims to delve deeper into the potential pathological role and molecular mechanisms of the IL-17 family and its pathways in wound repair. The intricate interactions between IL-17 and other cytokines will be discussed in detail, along with the activation of various signaling pathways, to provide a comprehensive understanding of IL-17's involvement in chronic wound inflammation and repair.
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Affiliation(s)
- Xingrui Mu
- College of Pharmacy, Zunyi Medical University, Zunyi, 563006, China
- Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563006, China
| | - Rifang Gu
- School Medical Office, Zunyi Medical University, Zunyi, 563006, China
| | - Ming Tang
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Xingqian Wu
- College of Pharmacy, Zunyi Medical University, Zunyi, 563006, China
- Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563006, China
| | - Wenjie He
- College of Pharmacy, Zunyi Medical University, Zunyi, 563006, China
- Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563006, China
| | - Xuqiang Nie
- College of Pharmacy, Zunyi Medical University, Zunyi, 563006, China.
- Key Lab of the Basic Pharmacology of the Ministry of Education & Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563006, China.
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2
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Babaniamansour P, Jacho D, Teow A, Rabino A, Garcia-Mata R, Yildirim-Ayan E. Macrophage Mechano-Responsiveness Within Three-Dimensional Tissue Matrix upon Mechanotherapy-Associated Strains. Tissue Eng Part A 2024; 30:314-329. [PMID: 37725574 DOI: 10.1089/ten.tea.2023.0110] [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] [Indexed: 09/21/2023] Open
Abstract
Mechano-rehabilitation, also known as mechanotherapy, represents the forefront of noninvasive treatment for musculoskeletal (MSK) tissue disorders, encompassing conditions affecting tendons, cartilage, ligaments, and muscles. Recent emphasis has underscored the significance of macrophage presence in the healing of MSK tissues. However, a considerable gap still exists in comprehending how mechanical strains associated with mechanotherapy impact both the naïve and pro-inflammatory macrophage phenotypes within the three-dimensional (3D) tissue matrix, as well as whether the shift in macrophage phenotype is contingent on the mechanical strains inherent to mechanotherapy. In this study, we delineated alterations in mechano-adaptation and polarization of both naive and M1 macrophages within 3D matrices, elucidating their response to varying degrees of mechanical strain exposure (3%, 6%, and 12%). To evaluate macrophage mechano-adaptation and mechano-sensitivity within 3D collagen matrices under mechanical loading, we employed structural techniques (scanning electron microscopy, histology), quantitative morphological measures for phenotypic assessment, and genotypic methods such as quantitative real-time polymerase chain reaction. Our data reveal that the response of macrophages to mechanical loading is not only contingent on their specific sub-phenotype but also varies with the amplitude of mechanical strain. Notably, although supra-mechanical loading (12% strain) was requisite to induce a phenotypic shift in naive (M0) macrophages, as little as 3% mechanical strain proved sufficient to prompt phenotypic alterations in pro-inflammatory (M1) macrophages. These findings pave the way for leveraging the macrophage mechanome in customized and targeted applications of mechanical strain within the mechano-therapeutic framework. Considering the prevalence of MSK tissue injuries and their profound societal and economic implications, the development of well-informed and effective clinical mechanotherapy modalities for MSK tissue healing becomes an imperative endeavor. Impact statement Mechanotherapy is a primary noninvasive treatment for musculoskeletal (MSK) tissue injuries, but the effect of mechanical strain on macrophage phenotypes is not fully understood. A recent study found that macrophage response to mechanical loading is both sub-phenotype specific and amplitude-dependent, with even small strains enough to induce phenotypic changes in pro-inflammatory macrophages. These findings could pave the way for using macrophage mechanome in targeted mechanotherapy applications for better MSK tissue healing.
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Affiliation(s)
| | - Diego Jacho
- Department of Bioengineering and University of Toledo, Toledo, Ohio, USA
| | - Ashley Teow
- Department of Bioengineering and University of Toledo, Toledo, Ohio, USA
| | - Agustin Rabino
- Department of Biological Sciences, University of Toledo, Toledo, Ohio, USA
| | - Rafael Garcia-Mata
- Department of Biological Sciences, University of Toledo, Toledo, Ohio, USA
| | - Eda Yildirim-Ayan
- Department of Bioengineering and University of Toledo, Toledo, Ohio, USA
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3
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Bharuka T, Reche A. Advancements in Periodontal Regeneration: A Comprehensive Review of Stem Cell Therapy. Cureus 2024; 16:e54115. [PMID: 38487109 PMCID: PMC10938178 DOI: 10.7759/cureus.54115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/13/2024] [Indexed: 03/17/2024] Open
Abstract
Periodontal disease, characterized by inflammation and infection of the supporting structures of teeth, presents a significant challenge in dentistry and public health. Current treatment modalities, while effective to some extent, have limitations in achieving comprehensive periodontal tissue regeneration. This comprehensive review explores the potential of stem cell therapy in advancing the field of periodontal regeneration. Stem cells, including mesenchymal stem cells (MSCs) and induced pluripotent stem cells (iPSCs), hold promise due to their immunomodulatory effects, differentiation potential into periodontal tissues, and paracrine actions. Preclinical studies using various animal models have revealed encouraging outcomes, though standardization and long-term assessment remain challenges. Clinical trials and case studies demonstrate the safety and efficacy of stem cell therapy in real-world applications, especially in personalized regenerative medicine. Patient selection criteria, ethical considerations, and standardized treatment protocols are vital for successful clinical implementation. Stem cell therapy is poised to revolutionize periodontal regeneration, offering more effective, patient-tailored treatments while addressing the systemic health implications of periodontal disease. This transformative approach holds the potential to significantly impact clinical practice and improve the overall well-being of individuals affected by this prevalent oral health concern. Responsible regulatory compliance and a focus on ethical considerations will be essential as stem cell therapy evolves in periodontal regeneration.
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Affiliation(s)
- Tanvi Bharuka
- Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Amit Reche
- Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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4
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Moon S, Hong J, Go S, Kim BS. Immunomodulation for Tissue Repair and Regeneration. Tissue Eng Regen Med 2023; 20:389-409. [PMID: 36920675 PMCID: PMC10219918 DOI: 10.1007/s13770-023-00525-0] [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: 10/20/2022] [Revised: 01/11/2023] [Accepted: 01/26/2023] [Indexed: 03/16/2023] Open
Abstract
Various immune cells participate in repair and regeneration following tissue injury or damage, orchestrating tissue inflammation and regeneration processes. A deeper understanding of the immune system's involvement in tissue repair and regeneration is critical for the development of successful reparatory and regenerative strategies. Here we review recent technologies that facilitate cell-based and biomaterial-based modulation of the immune systems for tissue repair and regeneration. First, we summarize the roles of various types of immune cells in tissue repair. Second, we review the principle, examples, and limitations of regulatory T (Treg) cell-based therapy, a representative cell-based immunotherapy. Finally, we discuss biomaterial-based immunotherapy strategies that aim to modulate immune cells using various biomaterials for tissue repair and regeneration.
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Affiliation(s)
- Sangjun Moon
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jihye Hong
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seokhyeong Go
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea.
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea.
- Institute of Chemical Processes, Institute of Engineering Research, BioMAX, Seoul National University, Seoul, 08826, Republic of Korea.
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5
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Li F, Crumley K, Bealer E, King JL, Saito E, Grimany-Nuno O, Yolcu ES, Shirwan H, Shea LD. Fas Ligand-Modified Scaffolds Protect Stem Cell Derived β-Cells by Modulating Immune Cell Numbers and Polarization. ACS APPLIED MATERIALS & INTERFACES 2022; 15:50549-50559. [PMID: 36533683 DOI: 10.1021/acsami.2c12939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Stem cell derived β-cells have demonstrated the potential to control blood glucose levels and represent a promising treatment for Type 1 diabetes (T1D). Early engraftment post-transplantation and subsequent maturation of these β-cells are hypothesized to be limited by the initial inflammatory response, which impacts the ability to sustain normoglycemia for long periods. We investigated the survival and development of immature hPSC-derived β-cells transplanted on poly(lactide-co-glycolide) (PLG) microporous scaffolds into the peritoneal fat, a site being considered for clinical translation. The scaffolds were modified with biotin for binding of a streptavidin-FasL (SA-FasL) chimeric protein to modulate the local immune cell responses. The presence of FasL impacted infiltration of monocytes and neutrophils and altered the immune cell polarization. Conditioned media generated from SA-FasL scaffolds explanted at day 4 post-transplant did not impact hPSC-derived β-cell survival and maturation in vitro, while these responses were reduced with conditioned media from control scaffolds. Following transplantation, β-cell viability and differentiation were improved with SA-FasL modification. A sustained increase in insulin positive cell ratio was observed with SA-FasL-modified scaffolds relative to control scaffolds. These results highlight that the initial immune response can significantly impact β-cell engraftment, and modulation of cell infiltration and polarization may be a consideration for supporting long-term function at an extrahepatic site.
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Affiliation(s)
- Feiran Li
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kelly Crumley
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Elizabeth Bealer
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jessica L King
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Eiji Saito
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Orlando Grimany-Nuno
- Department of Microbiology and Immunology, School of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Esma S Yolcu
- Department of Child Health and Molecular Microbiology and Immunology, University of Missouri, Columbia, Missouri 65211, United States
- Department of Microbiology and Immunology, School of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Haval Shirwan
- Department of Child Health and Molecular Microbiology and Immunology, University of Missouri, Columbia, Missouri 65211, United States
- Department of Microbiology and Immunology, School of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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6
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Immunomodulating Hydrogels as Stealth Platform for Drug Delivery Applications. Pharmaceutics 2022; 14:pharmaceutics14102244. [PMID: 36297679 PMCID: PMC9610165 DOI: 10.3390/pharmaceutics14102244] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/23/2022] [Accepted: 10/05/2022] [Indexed: 11/23/2022] Open
Abstract
Non-targeted persistent immune activation or suppression by different drug delivery platforms can cause adverse and chronic physiological effects including cancer and arthritis. Therefore, non-toxic materials that do not trigger an immunogenic response during delivery are crucial for safe and effective in vivo treatment. Hydrogels are excellent candidates that can be engineered to control immune responses by modulating biomolecule release/adsorption, improving regeneration of lymphoid tissues, and enhancing function during antigen presentation. This review discusses the aspects of hydrogel-based systems used as drug delivery platforms for various diseases. A detailed investigation on different immunomodulation strategies for various delivery options and deliberate upon the outlook of such drug delivery platforms are conducted.
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7
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Ciciriello AJ, Surnar B, Medy GD, Su X, Dhar S, Dumont CM. Biomaterial-targeted precision nanoparticle delivery to the injured spinal cord. Acta Biomater 2022; 152:532-545. [PMID: 36087868 PMCID: PMC10551882 DOI: 10.1016/j.actbio.2022.08.077] [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: 05/04/2022] [Revised: 07/29/2022] [Accepted: 08/31/2022] [Indexed: 11/01/2022]
Abstract
Drug delivery requires precision in timing, location, and dosage to achieve therapeutic benefits. Challenges in addressing all three of these critical criteria result in poor temporal dexterity, widespread accumulation and off-target effects, and high doses with the potential for toxicity. To address these challenges, we have developed the BiomatErial Accumulating Carriers for On-demand Nanotherapy (BEACON) platform that utilizes an implantable biomaterial to serve as a target for systemically delivered nanoparticles (NPs). With the BEACON system, administered NPs are conjugated with a ligand that has high affinity for a receptor in the implanted biomaterial. To test BEACON, an in vivo spinal cord injury (SCI) model was used as it provides an injury model where the three identified criteria can be tested as it is a dynamic and complicated injury model with no currently approved therapies. Through our work, we have demonstrated temporal dexterity in NP administration by injecting 6 days post-SCI, decreased off-target accumulation with a significant drop in liver accumulation, and retention of our NPs in the target biomaterial. The BEACON system can be applied broadly, beyond the nervous system, to improve systemically delivered NP accumulation at an implanted biomaterial target. STATEMENT OF SIGNIFICANCE: Targeted drug delivery approaches have the potential to improve therapeutic regimens for patients on a case-by-case basis. Improved localization of a therapeutic to site of interest can result in increased efficacy and limit the need for repeat dosing. Unfortunately, targeted strategies can fall short when receptors on cells or tissues are too widespread or change over the course of disease or injury progression. The BEACON system developed herein eliminates the need to target a cell or tissue receptor by targeting an implantable biomaterial with location-controllable accumulation and sustained presentation over time. The targeting paradigm presented by BEACON is widely applicable throughout tissue engineering and regenerative medicine without the need to retool for each new application.
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Affiliation(s)
- Andrew J Ciciriello
- Department of Biomedical Engineering, University of Miami, 1251 Memorial Drive, Coral Gables, FL 33146, United States; Dr. John T. Macdonald Foundation Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, 1951 NW 7th Avenue, Miami, Florida 33136, United States
| | - Bapurao Surnar
- Dr. John T. Macdonald Foundation Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, 1951 NW 7th Avenue, Miami, Florida 33136, United States; Department of Biochemistry & Molecular Biology, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States
| | - Giovanni D Medy
- Department of Biomedical Engineering, University of Miami, 1251 Memorial Drive, Coral Gables, FL 33146, United States
| | - Xiaoyu Su
- Department of Biomedical Engineering, University of Miami, 1251 Memorial Drive, Coral Gables, FL 33146, United States
| | - Shanta Dhar
- Dr. John T. Macdonald Foundation Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, 1951 NW 7th Avenue, Miami, Florida 33136, United States; Department of Biochemistry & Molecular Biology, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States; Sylvester Comprehensive Cancer Center, University of Miami, 1475 NW 12th Avenue, Miami, Florida 33136, United States
| | - Courtney M Dumont
- Department of Biomedical Engineering, University of Miami, 1251 Memorial Drive, Coral Gables, FL 33146, United States; Dr. John T. Macdonald Foundation Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, 1951 NW 7th Avenue, Miami, Florida 33136, United States; Department of Biochemistry & Molecular Biology, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States.
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8
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Su N, Villicana C, Yang F. Immunomodulatory strategies for bone regeneration: A review from the perspective of disease types. Biomaterials 2022; 286:121604. [PMID: 35667249 PMCID: PMC9881498 DOI: 10.1016/j.biomaterials.2022.121604] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 05/19/2022] [Accepted: 05/24/2022] [Indexed: 02/08/2023]
Abstract
Tissue engineering strategies for treating bone loss to date have largely focused on targeting stem cells or vascularization. Immune cells, including macrophages and T cells, can also indirectly enhance bone healing via cytokine secretion to interact with other bone niche cells. Bone niche cues and local immune environment vary depending on anatomical location, size of defects and disease types. As such, it is critical to evaluate the role of the immune system in the context of specific bone niche and different disease types. This review focuses on immunomodulation research for bone applications using biomaterials and cell-based strategies, with a unique perspective from different disease types. We first reviewed applications for prolonging orthopaedic implant lifetime and enhancing fracture healing, two clinical challenges where immunomodulatory strategies were initially developed for orthopedic applications. We then reviewed recent research progress in harnessing immunomodulatory strategies for regenerating critical-sized, long bone or cranial bone defects, and treating osteolytic bone diseases. Remaining gaps in knowledge, future directions and opportunities were also discussed.
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Affiliation(s)
- Ni Su
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Cassandra Villicana
- Department of Bioengineering, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Fan Yang
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA.,Department of Bioengineering, Stanford University School of Medicine, Stanford, CA, 94305, USA.,: Corresponding Author Fan Yang, Ph D, Department of Orthopaedic Surgery and Bioengineering, Stanford University School of Medicine, 240 Pasteur Dr, Palo Alto, CA 94304, Biomedical Innovation Building, 1st floor, Room 1200, , Phone: (650) 646-8558
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9
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Zheng R, Wang X, Xue J, Yao L, Wu G, Yi B, Hou M, Xu H, Zhang R, Chen J, Shen Z, Liu Y, Zhou G. Regeneration of Subcutaneous Cartilage in a Swine Model Using Autologous Auricular Chondrocytes and Electrospun Nanofiber Membranes Under Conditions of Varying Gelatin/PCL Ratios. Front Bioeng Biotechnol 2022; 9:752677. [PMID: 34993184 PMCID: PMC8724256 DOI: 10.3389/fbioe.2021.752677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 11/12/2021] [Indexed: 11/16/2022] Open
Abstract
The scarcity of ideal biocompatible scaffolds makes the regeneration of cartilage in the subcutaneous environment of large animals difficult. We have previously reported the successful regeneration of good-quality cartilage in a nude mouse model using the electrospun gelatin/polycaprolactone (GT/PCL) nanofiber membranes. The GT/PCL ratios were varied to generate different sets of membranes to conduct the experiments. However, it is unknown whether these GT/PCL membranes can support the process of cartilage regeneration in an immunocompetent large animal model. We seeded swine auricular chondrocytes onto different GT/PCL nanofiber membranes (GT:PCL = 30:70, 50:50, and 70:30) under the sandwich cell-seeding mode. Prior to subcutaneously implanting the samples into an autologous host, they were cultured in vitro over a period of 2 weeks. The results revealed that the nanofiber membranes with different GT/PCL ratios could support the process of subcutaneous cartilage regeneration in an autologous swine model. The maximum extent of homogeneity in the cartilage tissues was achieved when the G5P5 (GT: PC = 50: 50) group was used for the regeneration of cartilage. The formed homogeneous cartilage tissues were characterized by the maximum cartilage formation ratio. The extents of the ingrowth of the fibrous tissues realized and the extents of infiltration of inflammatory cells achieved were found to be the minimum in this case. Quantitative analyses were conducted to determine the wet weight, cartilage-specific extracellular matrix content, and Young’s modulus. The results indicated that the optimal extent of cartilage formation was observed in the G5P5 group. These results indicated that the GT/PCL nanofiber membranes could serve as a potential scaffold for supporting subcutaneous cartilage regeneration under clinical settings. An optimum GT/PCL ratio can promote cartilage formation.
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Affiliation(s)
- Rui Zheng
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai Stem Cell Institute, Shanghai, China.,Department of Dermatology, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoyun Wang
- Department of Cosmetic Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jixin Xue
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lin Yao
- National Tissue Engineering Center of China, Shanghai, China.,Research Institute of Plastic Surgery, Weifang Medical College, Weifang, China
| | - Gaoyang Wu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai Stem Cell Institute, Shanghai, China
| | - Bingcheng Yi
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai Stem Cell Institute, Shanghai, China
| | - Mengjie Hou
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai Stem Cell Institute, Shanghai, China.,National Tissue Engineering Center of China, Shanghai, China
| | - Hui Xu
- Department of Dermatology, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ruhong Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai Stem Cell Institute, Shanghai, China
| | - Jie Chen
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai Stem Cell Institute, Shanghai, China.,National Tissue Engineering Center of China, Shanghai, China
| | - Zhengyu Shen
- Department of Dermatology, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Liu
- National Tissue Engineering Center of China, Shanghai, China.,Research Institute of Plastic Surgery, Weifang Medical College, Weifang, China
| | - Guangdong Zhou
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai Stem Cell Institute, Shanghai, China.,National Tissue Engineering Center of China, Shanghai, China.,Research Institute of Plastic Surgery, Weifang Medical College, Weifang, China
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10
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Zheng K, Niu W, Lei B, Boccaccini AR. Immunomodulatory bioactive glasses for tissue regeneration. Acta Biomater 2021; 133:168-186. [PMID: 34418539 DOI: 10.1016/j.actbio.2021.08.023] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 08/06/2021] [Accepted: 08/16/2021] [Indexed: 02/07/2023]
Abstract
The regulatory functions of the immune response in tissue healing, repair, and regeneration have been evidenced in the last decade. Immune cells play central roles in immune responses toward inducing favorable tissue regenerative processes. Modulating and controlling the immune cell responses (particularly macrophages) is an emerging approach to enhance tissue regeneration. Bioactive glasses (BGs) are multifunctional materials exhibiting osteogenic, angiogenic, and antibacterial properties, being increasingly investigated for various tissue regeneration scenarios, including bone regeneration and wound healing. On the other hand, the immunomodulatory effects of BGs in relation to regenerating tissues have started to be understood, and key knowledge is emerging. This is the first review article summarizing the immunomodulatory effects of BGs for tissue repair and regeneration. The immune response to BGs is firstly introduced, discussing potential mechanisms regarding the immunomodulation effects induced by BGs. Moreover, the interactions between the immune cells involved in the immunomodulation process and BGs (dissolution products) are summarized in detail. Particularly, a well-regulated and timely switch of macrophage phenotype from pro-inflammatory to anti-inflammatory is crucial to constructive tissue regeneration through modulating osteogenesis, osteoclastogenesis, and angiogenesis. The influence of BG characteristics on macrophage responses is discussed. We highlight the strategies employed to harness macrophage responses for enhanced tissue regeneration, including the incorporation of active ions, surface functionalization, and controlled release of immunomodulatory molecules. Finally, we conclude with our perspectives on future research challenges and directions in the emerging field of immunomodulatory BGs for tissue regeneration. STATEMENT OF SIGNIFICANCE: Immunomodulatory effects of bioactive glasses (BGs) in relation to bone regeneration and wound healing have started to be understood. We summarize those studies which have focused on immunomodulatory BGs for tissue regeneration. We first introduce the potential mechanisms of the immunomodulation effects induced by BGs. Interactions between the cells involved in immunomodulation processes and BGs (and their dissolution products, biologically active ions) are elaborated. We highlight the strategies employed to modulate macrophage responses for enhancing tissue regeneration, including incorporation of active ions, surface functionalization, and controlled release of immunomodulatory agents. This is the first review article summarizing and outlining the immunomodulatory effects of BGs for tissue regeneration. We anticipate that increasing research efforts will start to emerge in the area of immunomodulatory BGs.
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11
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Tejeda G, Ciciriello AJ, Dumont CM. Biomaterial Strategies to Bolster Neural Stem Cell-Mediated Repair of the Central Nervous System. Cells Tissues Organs 2021; 211:655-669. [PMID: 34120118 DOI: 10.1159/000515351] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 02/12/2021] [Indexed: 01/25/2023] Open
Abstract
Stem cell therapies have the potential to not only repair, but to regenerate tissue of the central nervous system (CNS). Recent studies demonstrate that transplanted stem cells can differentiate into neurons and integrate with the intact circuitry after traumatic injury. Unfortunately, the positive findings described in rodent models have not been replicated in clinical trials, where the burden to maintain the cell viability necessary for tissue repair becomes more challenging. Low transplant survival remains the greatest barrier to stem cell-mediated repair of the CNS, often with fewer than 1-2% of the transplanted cells remaining after 1 week. Strategic transplantation parameters, such as injection location, cell concentration, and transplant timing achieve only modest improvements in stem cell transplant survival and appear inconsistent across studies. Biomaterials provide researchers with a means to significantly improve stem cell transplant survival through two mechanisms: (1) a vehicle to deliver and protect the stem cells and (2) a substrate to control the cytotoxic injury environment. These biomaterial strategies can alleviate cell death associated with delivery to the injury and can be used to limit cell death after transplantation by limiting cell exposure to cytotoxic signals. Moreover, it is likely that control of the injury environment with biomaterials will lead to a more reliable support for transplanted cell populations. This review will highlight the challenges associated with cell delivery in the CNS and the advances in biomaterial development and deployment for stem cell therapies necessary to bolster stem cell-mediated repair.
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Affiliation(s)
- Giancarlo Tejeda
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA.,Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, Miami, Florida, USA
| | - Andrew J Ciciriello
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA.,Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, Miami, Florida, USA
| | - Courtney M Dumont
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA.,Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, Miami, Florida, USA
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12
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Aubeux D, Peters OA, Hosseinpour S, Tessier S, Geoffroy V, Pérez F, Gaudin A. Specialized pro-resolving lipid mediators in endodontics: a narrative review. BMC Oral Health 2021; 21:276. [PMID: 34030680 PMCID: PMC8142493 DOI: 10.1186/s12903-021-01619-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 05/09/2021] [Indexed: 02/06/2023] Open
Abstract
Endodontics is the branch of dentistry concerned with the morphology, physiology, and pathology of the human dental pulp and periradicular tissues. Human dental pulp is a highly dynamic tissue equipped with a network of resident immunocompetent cells that play major roles in the defense against pathogens and during tissue injury. However, the efficiency of these mechanisms during dental pulp inflammation (pulpitis) varies due to anatomical and physiological restrictions. Uncontrolled, excessive, or unresolved inflammation can lead to pulp tissue necrosis and subsequent bone infections called apical periodontitis. In most cases, pulpitis treatment consists of total pulp removal. Although this strategy has a good success rate, this treatment has some drawbacks (lack of defense mechanisms, loss of healing capacities, incomplete formation of the root in young patients). In a sizeable number of clinical situations, the decision to perform pulp extirpation and endodontic treatment is justifiable by the lack of therapeutic tools that could otherwise limit the immune/inflammatory process. In the past few decades, many studies have demonstrated that the resolution of acute inflammation is necessary to avoid the development of chronic inflammation and to promote repair or regeneration. This active process is orchestrated by Specialized Pro-resolving lipid Mediators (SPMs), including lipoxins, resolvins, protectins and maresins. Interestingly, SPMs do not have direct anti-inflammatory effects by inhibiting or directly blocking this process but can actively reduce neutrophil infiltration into inflamed tissues, enhance efferocytosis and bacterial phagocytosis by monocytes and macrophages and simultaneously inhibit inflammatory cytokine production. Experimental clinical application of SPMs has shown promising result in a wide range of inflammatory diseases, such as renal fibrosis, cerebral ischemia, marginal periodontitis, and cancer; the potential of SPMs in endodontic therapy has recently been explored. In this review, our objective was to analyze the involvement and potential use of SPMs in endodontic therapies with an emphasis on SPM delivery systems to effectively administer SPMs into the dental pulp space.
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Affiliation(s)
- Davy Aubeux
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, Université de Nantes, ONIRIS, 44042, Nantes, France.,Université de Nantes, UFR Odontologie, 44042, Nantes, France
| | - Ove A Peters
- School of Dentistry, The University of Queensland, Brisbane, Australia
| | | | - Solène Tessier
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, Université de Nantes, ONIRIS, 44042, Nantes, France.,Université de Nantes, UFR Odontologie, 44042, Nantes, France
| | - Valérie Geoffroy
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, Université de Nantes, ONIRIS, 44042, Nantes, France.,Université de Nantes, UFR Odontologie, 44042, Nantes, France
| | - Fabienne Pérez
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, Université de Nantes, ONIRIS, 44042, Nantes, France.,Université de Nantes, UFR Odontologie, 44042, Nantes, France.,CHU Nantes, PHU4 OTONN44093, Nantes, France
| | - Alexis Gaudin
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, Université de Nantes, ONIRIS, 44042, Nantes, France. .,Université de Nantes, UFR Odontologie, 44042, Nantes, France. .,CHU Nantes, PHU4 OTONN44093, Nantes, France.
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13
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Wang Y, Bruggeman KF, Franks S, Gautam V, Hodgetts SI, Harvey AR, Williams RJ, Nisbet DR. Is Viral Vector Gene Delivery More Effective Using Biomaterials? Adv Healthc Mater 2021; 10:e2001238. [PMID: 33191667 DOI: 10.1002/adhm.202001238] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/03/2020] [Indexed: 12/16/2022]
Abstract
Gene delivery has been extensively investigated for introducing foreign genetic material into cells to promote expression of therapeutic proteins or to silence relevant genes. This approach can regulate genetic or epigenetic disorders, offering an attractive alternative to pharmacological therapy or invasive protein delivery options. However, the exciting potential of viral gene therapy has yet to be fully realized, with a number of clinical trials failing to deliver optimal therapeutic outcomes. Reasons for this include difficulty in achieving localized delivery, and subsequently lower efficacy at the target site, as well as poor or inconsistent transduction efficiency. Thus, ongoing efforts are focused on improving local viral delivery and enhancing its efficiency. Recently, biomaterials have been exploited as an option for more controlled, targeted and programmable gene delivery. There is a growing body of literature demonstrating the efficacy of biomaterials and their potential advantages over other delivery strategies. This review explores current limitations of gene delivery and the progress of biomaterial-mediated gene delivery. The combination of biomaterials and gene vectors holds the potential to surmount major challenges, including the uncontrolled release of viral vectors with random delivery duration, poorly localized viral delivery with associated off-target effects, limited viral tropism, and immune safety concerns.
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Affiliation(s)
- Yi Wang
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
| | - Kiara F. Bruggeman
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
| | - Stephanie Franks
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
| | - Vini Gautam
- Department of Biomedical Engineering The University of Melbourne Melbourne Victoria 3010 Australia
| | - Stuart I. Hodgetts
- School of Human Sciences The University of Western Australia Perth WA 6009 Australia
- Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Alan R. Harvey
- School of Human Sciences The University of Western Australia Perth WA 6009 Australia
- Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Richard J. Williams
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT) School of Medicine Deakin University Waurn Ponds VIC 3216 Australia
- Biofab3D St. Vincent's Hospital Fitzroy 3065 Australia
| | - David R. Nisbet
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
- Biofab3D St. Vincent's Hospital Fitzroy 3065 Australia
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14
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A dual mode nanophotonics concept for in situ activation of brain immune cells using a photoswitchable yolk-shell upconversion nanoformulation. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2020; 29:102279. [PMID: 32750495 DOI: 10.1016/j.nano.2020.102279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/17/2020] [Accepted: 07/21/2020] [Indexed: 01/10/2023]
Abstract
Here, we introduce a nanophotonics concept for optically triggered activation of microglia. Specifically, we synthesized a yolk-shell structured mesoporous silica coated core-shell upconverting nanoparticles (UCNP@ysSiO2). The nanoparticles are loaded with microglia activators-bacterial lipopolysaccharide (LPS) together with indocyanine green (ICG), and then capped with β-cyclodextrin (CD) via selective affinity of this compound to photoswitchable azobenzene (Azo). Upon exposure to NIR light, and subsequent trans- to cis photoisomerization of the Azo group induced by the upconversion light, dissociation of β-CD produces the release of LPS. The released LPS activates microglia through a toll-like receptor 4 mediated pathway, while ICG excited by its absorption of the 800 nm upconversion light, produces local heating, thus synergistically activating microglia through heat shock proteins. We propose that the controlled activation of microglia with deep tissue penetrating NIR triggered drug release, may provide a new strategy for in situ treatment of many brain diseases.
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15
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Mahon OR, Browe DC, Gonzalez-Fernandez T, Pitacco P, Whelan IT, Von Euw S, Hobbs C, Nicolosi V, Cunningham KT, Mills KH, Kelly DJ, Dunne A. Nano-particle mediated M2 macrophage polarization enhances bone formation and MSC osteogenesis in an IL-10 dependent manner. Biomaterials 2020; 239:119833. [DOI: 10.1016/j.biomaterials.2020.119833] [Citation(s) in RCA: 107] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 01/24/2020] [Accepted: 01/26/2020] [Indexed: 12/22/2022]
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16
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Smith DR, Dumont CM, Park J, Ciciriello AJ, Guo A, Tatineni R, Cummings BJ, Anderson AJ, Shea LD. Polycistronic Delivery of IL-10 and NT-3 Promotes Oligodendrocyte Myelination and Functional Recovery in a Mouse Spinal Cord Injury Model. Tissue Eng Part A 2020; 26:672-682. [PMID: 32000627 DOI: 10.1089/ten.tea.2019.0321] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
One million estimated cases of spinal cord injury (SCI) have been reported in the United States and repairing an injury has constituted a difficult clinical challenge. The complex, dynamic, inhibitory microenvironment postinjury, which is characterized by proinflammatory signaling from invading leukocytes and lack of sufficient factors that promote axonal survival and elongation, limits regeneration. Herein, we investigated the delivery of polycistronic vectors, which have the potential to coexpress factors that target distinct barriers to regeneration, from a multiple channel poly(lactide-co-glycolide) (PLG) bridge to enhance spinal cord regeneration. In this study, we investigated polycistronic delivery of IL-10 that targets proinflammatory signaling, and NT-3 that targets axonal survival and elongation. A significant increase was observed in the density of regenerative macrophages for IL-10+NT-3 condition relative to conditions without IL-10. Furthermore, combined delivery of IL-10+NT-3 produced a significant increase of axonal density and notably myelinated axons compared with all other conditions. A significant increase in functional recovery was observed for IL-10+NT-3 delivery at 12 weeks postinjury that was positively correlated to oligodendrocyte myelinated axon density, suggesting oligodendrocyte-mediated myelination as an important target to improve functional recovery. These results further support the use of multiple channel PLG bridges as a growth supportive substrate and platform to deliver bioactive agents to modulate the SCI microenvironment and promote regeneration and functional recovery. Impact statement Spinal cord injury (SCI) results in a complex microenvironment that contains multiple barriers to regeneration and functional recovery. Multiple factors are necessary to address these barriers to regeneration, and polycistronic lentiviral gene therapy represents a strategy to locally express multiple factors simultaneously. A bicistronic vector encoding IL-10 and NT-3 was delivered from a poly(lactide-co-glycolide) bridge, which provides structural support that guides regeneration, resulting in increased axonal growth, myelination, and subsequent functional recovery. These results demonstrate the opportunity of targeting multiple barriers to SCI regeneration for additive effects.
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Affiliation(s)
- Dominique R Smith
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Courtney M Dumont
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan.,Department of Biomedical Engineering, University of Miami, Coral Gables, Florida.,Biomedical Nanotechnology Institute at University of Miami (BioNIUM), University of Miami, Miami, Florida
| | - Jonghyuck Park
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky.,Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky
| | - Andrew J Ciciriello
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan.,Department of Biomedical Engineering, University of Miami, Coral Gables, Florida
| | - Amina Guo
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Ravindra Tatineni
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Brian J Cummings
- Institute for Memory Impairments and Neurological Disorders (iMIND), University of California, Irvine, California.,Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, California.,Department of Anatomy and Neurobiology, University of California, Irvine, California.,Department of Physical Medicine and Rehabilitation, University of California, Irvine, California
| | - Aileen J Anderson
- Institute for Memory Impairments and Neurological Disorders (iMIND), University of California, Irvine, California.,Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, California.,Department of Anatomy and Neurobiology, University of California, Irvine, California.,Department of Physical Medicine and Rehabilitation, University of California, Irvine, California
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan.,Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan
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17
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Alotaibi HF, Perni S, Prokopovich P. Nanoparticle-based model of anti-inflammatory drug releasing LbL coatings for uncemented prosthesis aseptic loosening prevention. Int J Nanomedicine 2019; 14:7309-7322. [PMID: 31571855 PMCID: PMC6750844 DOI: 10.2147/ijn.s217112] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 07/27/2019] [Indexed: 02/06/2023] Open
Abstract
Introduction The only treatment for aseptic loosening is the replacement of the prosthesis through revision surgery. A preventive approach, achieved through anti-inflammatory drugs released from the device, has shown to be a viable strategy; however, the performance of these devices is not yet satisfactory thus further improvements are necessary. Methods We used titanium nanoparticles as a model for implant surfaces and developed a coating containing dexamethasone (DEX) using layer-by-layer deposition. Results The amount of deposited drug depended on the number of layers and the release was sustained for months. The efficiency of the released DEX in reducing inflammation markers (tumor necrosis factor alpha and IL-6) produced by human monocytes and macrophages was similar to the pure drug at the same concentration without negative impacts on the viability and morphology of these cells. Conclusion These coatings were not inferior to medical grade titanium (the standard material used in uncemented devices) regarding their ability to sustain osteoblasts and fibroblasts growth.
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Affiliation(s)
| | - Stefano Perni
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK
| | - Polina Prokopovich
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK
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18
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Biomaterial-based delivery systems of nucleic acid for regenerative research and regenerative therapy. Regen Ther 2019; 11:123-130. [PMID: 31338391 PMCID: PMC6626072 DOI: 10.1016/j.reth.2019.06.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/10/2019] [Accepted: 06/25/2019] [Indexed: 12/22/2022] Open
Abstract
Regenerative medicine is a new and promising medical method aiming at treating patients with defective or dysfunctional tissues by maintaining or enhancing the biological activity of cells. The development of biomaterial-based technologies, such as cell scaffolds and carriers for drug delivery system, are highly required to promote the regenerative research and regenerative therapy. Nucleic acids are one of the most feasible factors to efficiently modify the biological activity of cells. The effective and stable delivery of nucleic acids into cells is highly required to succeed in the modification. Biomaterials-based non-viral carriers or biological carriers, like exosomes, play an important role in the efficient delivery of nucleic acids. This review introduces the examples of regenerative research and regenerative therapy based on the delivery of nucleic acids with biomaterials technologies and emphasizes their importance to accomplish regenerative medicine. Modifying the activity of cells is important for regenerative medicine. Various nucleic acids regulate gene expression to modify the activity of cells. Intracellular delivery system is vital to the nucleic acids-based modification. Biomaterials are useful for the intracellular delivery of nucleic acids.
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Key Words
- Biomaterials
- CRISPR, clustered regularly interspaced short palindromic repeats
- Cas, CRISPR-associated systems
- Cell scaffold
- DDS, drug delivery system
- Drug delivery system
- ECM, extracellular matrix
- MSC, mesenchymal stem cells
- Nucleic acids
- PEG, polyethylene glycol
- PLGA, poly(d,l-lactic acid-co-glycolic acid)
- RISC, RNA-induced silencing complex
- RNAi, RNA interferince
- Regenerative research
- Regenerative therapy
- TALEN, transcription activator-like effector nuclease
- ZFN, zinc finger nucleases
- lncRNA, long non-coding RNA
- mRNA, messenger RNA
- miRNA, microRNA
- siRNA, small interfering RNA
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19
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Intravascular innate immune cells reprogrammed via intravenous nanoparticles to promote functional recovery after spinal cord injury. Proc Natl Acad Sci U S A 2019; 116:14947-14954. [PMID: 31285339 DOI: 10.1073/pnas.1820276116] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Traumatic primary spinal cord injury (SCI) results in paralysis below the level of injury and is associated with infiltration of hematogenous innate immune cells into the injured cord. Methylprednisolone has been applied to reduce inflammation following SCI, yet was discontinued due to an unfavorable risk-benefit ratio associated with off-target effects. In this study, i.v. administered poly(lactide-coglycolide) nanoparticles were internalized by circulating monocytes and neutrophils, reprogramming these cells based on their physicochemical properties and not by an active pharmaceutical ingredient, to exhibit altered biodistribution, gene expression, and function. Approximately 80% of nanoparticle-positive immune cells were observed within the injury, and, additionally, the overall accumulation of innate immune cells at the injury was reduced 4-fold, coinciding with down-regulated expression of proinflammatory factors and increased expression of antiinflammatory and proregenerative genes. Furthermore, nanoparticle administration induced macrophage polarization toward proregenerative phenotypes at the injury and markedly reduced both fibrotic and gliotic scarring 3-fold. Moreover, nanoparticle administration with the implanted multichannel bridge led to increased numbers of regenerating axons, increased myelination with about 40% of axons myelinated, and an enhanced locomotor function (score of 6 versus 3 for control group). These data demonstrate that nanoparticles provide a platform that limits acute inflammation and tissue destruction, at a favorable risk-benefit ratio, leading to a proregenerative microenvironment that supports regeneration and functional recovery. These particles may have applications to trauma and potentially other inflammatory diseases.
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20
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Sutter D, Dzhonova DV, Prost JC, Bovet C, Banz Y, Rahnfeld L, Leroux JC, Rieben R, Vögelin E, Plock JA, Luciani P, Taddeo A, Schnider JT. Delivery of Rapamycin Using In Situ Forming Implants Promotes Immunoregulation and Vascularized Composite Allograft Survival. Sci Rep 2019; 9:9269. [PMID: 31239498 PMCID: PMC6592945 DOI: 10.1038/s41598-019-45759-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 06/13/2019] [Indexed: 12/11/2022] Open
Abstract
Vascularized composite allotransplantation (VCA), such as hand and face transplantation, is emerging as a potential solution in patients that suffered severe injuries. However, adverse effects of chronic high-dose immunosuppression regimens strongly limit the access to these procedures. In this study, we developed an in situ forming implant (ISFI) loaded with rapamycin to promote VCA acceptance. We hypothesized that the sustained delivery of low-dose rapamycin in proximity to the graft may promote graft survival and induce an immunoregulatory microenvironment, boosting the expansion of T regulatory cells (Treg). In vitro and in vivo analysis of rapamycin-loaded ISFI (Rapa-ISFI) showed sustained drug release with subtherapeutic systemic levels and persistent tissue levels. A single injection of Rapa-ISFI in the groin on the same side as a transplanted limb significantly prolonged VCA survival. Moreover, treatment with Rapa-ISFI increased the levels of multilineage mixed chimerism and the frequency of Treg both in the circulation and VCA-skin. Our study shows that Rapa-ISFI therapy represents a promising approach for minimizing immunosuppression, decreasing toxicity and increasing patient compliance. Importantly, the use of such a delivery system may favor the reprogramming of allogeneic responses towards a regulatory function in VCA and, potentially, in other transplants and inflammatory conditions.
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Affiliation(s)
- Damian Sutter
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research, University of Bern, Bern, Switzerland
| | | | - Jean-Christophe Prost
- University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Cedric Bovet
- University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Yara Banz
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Lisa Rahnfeld
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Jena, Jena, Germany.,Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland
| | - Jean-Christophe Leroux
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, Switzerland
| | - Robert Rieben
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Esther Vögelin
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Jan A Plock
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, University of Zurich, Zürich, Switzerland.
| | - Paola Luciani
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Jena, Jena, Germany. .,Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, Switzerland. .,Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland.
| | - Adriano Taddeo
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. .,Department for BioMedical Research, University of Bern, Bern, Switzerland.
| | - Jonas T Schnider
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research, University of Bern, Bern, Switzerland
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21
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Dumont CM, Carlson MA, Munsell MK, Ciciriello AJ, Strnadova K, Park J, Cummings BJ, Anderson AJ, Shea LD. Aligned hydrogel tubes guide regeneration following spinal cord injury. Acta Biomater 2019; 86:312-322. [PMID: 30610918 DOI: 10.1016/j.actbio.2018.12.052] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/22/2018] [Accepted: 12/31/2018] [Indexed: 12/21/2022]
Abstract
Directing the organization of cells into a tissue with defined architectures is one use of biomaterials for regenerative medicine. To this end, hydrogels are widely investigated as they have mechanical properties similar to native soft tissues and can be formed in situ to conform to a defect. Herein, we describe the development of porous hydrogel tubes fabricated through a two-step polymerization process with an intermediate microsphere phase that provides macroscale porosity (66.5%) for cell infiltration. These tubes were investigated in a spinal cord injury model, with the tubes assembled to conform to the injury and to provide an orientation that guides axons through the injury. Implanted tubes had good apposition and were integrated with the host tissue due to cell infiltration, with a transient increase in immune cell infiltration at 1 week that resolved by 2 weeks post injury compared to a gelfoam control. The glial scar was significantly reduced relative to control, which enabled robust axon growth along the inner and outer surface of the tubes. Axon density within the hydrogel tubes (1744 axons/mm2) was significantly increased more than 3-fold compared to the control (456 axons/mm2), with approximately 30% of axons within the tube myelinated. Furthermore, implantation of hydrogel tubes enhanced functional recovery relative to control. This modular assembly of porous tubes to fill a defect and directionally orient tissue growth could be extended beyond spinal cord injury to other tissues, such as vascular or musculoskeletal tissue. STATEMENT OF SIGNIFICANCE: Tissue engineering approaches that mimic the native architecture of healthy tissue are needed following injury. Traditionally, pre-molded scaffolds have been implemented but require a priori knowledge of wound geometries. Conversely, hydrogels can conform to any injury, but do not guide bi-directional regeneration. In this work, we investigate the feasibility of a system of modular hydrogel tubes to promote bi-directional regeneration after spinal cord injury. This system allows for tubes to be cut to size during surgery and implanted one-by-one to fill any injury, while providing bi-directional guidance. Moreover, this system of tubes can be broadly applied to tissue engineering approaches that require a modular guidance system, such as repair to vascular or musculoskeletal tissues.
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22
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Witherel CE, Abebayehu D, Barker TH, Spiller KL. Macrophage and Fibroblast Interactions in Biomaterial-Mediated Fibrosis. Adv Healthc Mater 2019; 8:e1801451. [PMID: 30658015 PMCID: PMC6415913 DOI: 10.1002/adhm.201801451] [Citation(s) in RCA: 149] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 12/07/2018] [Indexed: 01/08/2023]
Abstract
Biomaterial-mediated inflammation and fibrosis remain a prominent challenge in designing materials to support tissue repair and regeneration. Despite the many biomaterial technologies that have been designed to evade or suppress inflammation (i.e., delivery of anti-inflammatory drugs, hydrophobic coatings, etc.), many materials are still subject to a foreign body response, resulting in encapsulation of dense, scar-like extracellular matrix. The primary cells involved in biomaterial-mediated fibrosis are macrophages, which modulate inflammation, and fibroblasts, which primarily lay down new extracellular matrix. While macrophages and fibroblasts are implicated in driving biomaterial-mediated fibrosis, the signaling pathways and spatiotemporal crosstalk between these cell types remain loosely defined. In this review, the role of M1 and M2 macrophages (and soluble cues) involved in the fibrous encapsulation of biomaterials in vivo is investigated, with additional focus on fibroblast and macrophage crosstalk in vitro along with in vitro models to study the foreign body response. Lastly, several strategies that have been used to specifically modulate macrophage and fibroblast behavior in vitro and in vivo to control biomaterial-mediated fibrosis are highlighted.
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Affiliation(s)
- Claire E. Witherel
- Drexel University, School of Biomedical Engineering, Science and Health Systems, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA
| | - Daniel Abebayehu
- University of Virginia, Department of Biomedical Engineering, School of Engineering & School of Medicine, 415 Lane Road, Charlottesville, Virginia 22904, USA
| | - Thomas H. Barker
- University of Virginia, Department of Biomedical Engineering, School of Engineering & School of Medicine, 415 Lane Road, Charlottesville, Virginia 22904, USA
| | - Kara L. Spiller
- Drexel University, School of Biomedical Engineering, Science and Health Systems, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA,
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23
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Yoon J, Yang HS, Lee BS, Yu WR. Recent Progress in Coaxial Electrospinning: New Parameters, Various Structures, and Wide Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704765. [PMID: 30152180 DOI: 10.1002/adma.201704765] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 06/01/2018] [Indexed: 05/27/2023]
Abstract
Electrospinning, a common method for synthesizing 1D nanostructures, has contributed to developments in the electrical, electrochemical, biomedical, and environmental fields. Recently, a coaxial electrospinning process has been used to fabricate new nanostructures with advanced performance, but intricate and delicate process conditions hinder reproducibility and mass production. Herein, recent progress in new emerging parameters for successful coaxial electrospinning, and the various nanostructures and critical application areas resulting from these activities. Relationships between the new parameters and final product characteristics are described, new possibilities for nanostructures achievable via coaxial electrospinning are identified, and new research directions with a view to future applications are suggested.
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Affiliation(s)
- Jihyun Yoon
- Department of Materials Science and Engineering, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Ho-Sung Yang
- Department of Materials Science and Engineering, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Byoung-Sun Lee
- Department of Nanoengineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Woong-Ryeol Yu
- Department of Materials Science and Engineering, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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24
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He XT, Wang J, Li X, Yin Y, Sun HH, Chen FM. The Critical Role of Cell Homing in Cytotherapeutics and Regenerative Medicine. ADVANCED THERAPEUTICS 2018. [DOI: 10.1002/adtp.201800098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiao-Tao He
- State Key Laboratory of Military Stomatology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- National Clinical Research Center for Oral Diseases; Department of Periodontology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- Shaanxi Engineering Research Center for Dental Materials, and Advanced Manufacture; Biomaterials Unit; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
| | - Jia Wang
- State Key Laboratory of Military Stomatology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- Shaanxi Engineering Research Center for Dental Materials, and Advanced Manufacture; Biomaterials Unit; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
| | - Xuan Li
- State Key Laboratory of Military Stomatology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- National Clinical Research Center for Oral Diseases; Department of Periodontology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- Shaanxi Engineering Research Center for Dental Materials, and Advanced Manufacture; Biomaterials Unit; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
| | - Yuan Yin
- State Key Laboratory of Military Stomatology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- Shaanxi Engineering Research Center for Dental Materials, and Advanced Manufacture; Biomaterials Unit; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
| | - Hai-Hua Sun
- National Clinical Research Center for Oral Diseases; Department of Periodontology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
| | - Fa-Ming Chen
- State Key Laboratory of Military Stomatology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- National Clinical Research Center for Oral Diseases; Department of Periodontology; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
- Shaanxi Engineering Research Center for Dental Materials, and Advanced Manufacture; Biomaterials Unit; School of Stomatology; Fourth Military Medical University; 710032 Xi'an P. R. China
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25
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Abstract
Wound healing is one of the most complex processes that our bodies must perform. While our ability to repair wounds is often taken for granted, conditions such as diabetes, obesity, or simply old age can significantly impair this process. With the incidence of all three predicted to continue growing into the foreseeable future, there is an increasing push to develop strategies that facilitate healing. Biomaterials are an attractive approach for modulating all aspects of repair, and have the potential to steer the healing process towards regeneration. In this review, we will cover recent advances in developing biomaterials that actively modulate the process of wound healing, and will provide insight into how biomaterials can be used to simultaneously rewire multiple phases of the repair process.
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Affiliation(s)
- Anna Stejskalová
- Department of Bioengineering, Royal School of Mines, Imperial College London, London SW7 2AZ, UK.
| | - Benjamin D Almquist
- Department of Bioengineering, Royal School of Mines, Imperial College London, London SW7 2AZ, UK.
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26
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Knopf-Marques H, Barthes J, Wolfova L, Vidal B, Koenig G, Bacharouche J, Francius G, Sadam H, Liivas U, Lavalle P, Vrana NE. Auxiliary Biomembranes as a Directional Delivery System To Control Biological Events in Cell-Laden Tissue-Engineering Scaffolds. ACS OMEGA 2017; 2:918-929. [PMID: 30023620 PMCID: PMC6044576 DOI: 10.1021/acsomega.6b00502] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/02/2017] [Indexed: 06/08/2023]
Abstract
Delivery of growth factors is an indispensable part of tissue engineering. Here, we describe a detachable membrane-based release system composed of extracellular matrix components that can be attached to hydrogels to achieve directional release of bioactive molecules. This way, the release of cytokines/growth factors can be started at a desired point of tissue maturation or directly in vivo. As a model, we develop thin films of an interpenetrating network of double-cross-linked gelatin and hyaluronic acid derivatives. The use of the auxiliary release system with vascular endothelial growth factor results in extensive sprouting by encapsulated vascular endothelial cells. The presence of the release system with interleukin-4 results in clustering of encapsulated macrophages with a significant decrease in M1 macrophages (proinflammatory). This system can be used in conjunction with three-dimensional structures as an auxiliary system to control artificial tissue maturation and growth.
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Affiliation(s)
- Helena Knopf-Marques
- INSERM
UMR 1121, 11 rue Humann, 67085 Strasbourg, France
- Faculté
de Chirurgie Dentaire, Université
de Strasbourg, 8 rue
Sainte Elisabeth, 67000 Strasbourg, France
| | - Julien Barthes
- INSERM
UMR 1121, 11 rue Humann, 67085 Strasbourg, France
- PROTiP
Medical, 8 Place de l’Hôpital, 67000 Strasbourg, France
| | - Lucie Wolfova
- Contipro
Biotech S.R.O., Dolni Dobrouc 401, 561 02 Dolni Dobrouc, Czech Republic
| | - Bérengère Vidal
- PROTiP
Medical, 8 Place de l’Hôpital, 67000 Strasbourg, France
| | | | - Jalal Bacharouche
- Laboratoire
de Chimie Physique et Microbiologie pour l’Environnement, CNRS,
UMR 7564, 405 rue de
Vandoeuvre, 54600 Villers-les-Nancy, France
| | - Grégory Francius
- Laboratoire
de Chimie Physique et Microbiologie pour l’Environnement, CNRS,
UMR 7564, 405 rue de
Vandoeuvre, 54600 Villers-les-Nancy, France
| | | | | | - Philippe Lavalle
- INSERM
UMR 1121, 11 rue Humann, 67085 Strasbourg, France
- Faculté
de Chirurgie Dentaire, Université
de Strasbourg, 8 rue
Sainte Elisabeth, 67000 Strasbourg, France
| | - Nihal Engin Vrana
- INSERM
UMR 1121, 11 rue Humann, 67085 Strasbourg, France
- PROTiP
Medical, 8 Place de l’Hôpital, 67000 Strasbourg, France
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27
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Molnár Z, Benes J, Reuter DA. Intensive care medicine in 2050: perioperative critical care. Intensive Care Med 2017; 43:1138-1140. [PMID: 28180931 DOI: 10.1007/s00134-017-4703-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 01/27/2017] [Indexed: 01/06/2023]
Affiliation(s)
- Zsolt Molnár
- Department of Anesthesiology and Intensive Care, University of Szeged, 6. Semmelweis St, Szeged, 6725, Hungary.
| | - Jan Benes
- Department of Anesthesiology and Intensive Care, Faculty of Medicine in Plzen, Charles University, alej Svobody 80, 306 40, Plzen, Czech Republic.,Biomedical Centre, Faculty of Medicine in Plzen, Charles University, alej Svobody 76, 323 00, Plzen, Czech Republic
| | - Daniel A Reuter
- Center of Anesthesiology and Intensive Care Medicine, Hamburg Eppendorf University Medical Center, Martinistr. 52, 20246, Hamburg, Germany
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28
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Abstract
Type 1 diabetes is an autoimmune disorder in which the immune system attacks and destroys insulin-producing islet cells of the pancreas. Although islet transplantation has proved to be successful for some patients with type 1 diabetes, its widespread use is limited by islet donor shortage and the requirement for lifelong immunosuppression. An encapsulation strategy that can prevent the rejection of xenogeneic islets or of stem cell-derived allogeneic islets can potentially eliminate both of these barriers. Although encapsulation technology has met several challenges, the convergence of expertise in materials, nanotechnology, stem cell biology and immunology is allowing us to get closer to the goal of encapsulated islet cell therapy for humans.
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Affiliation(s)
- Tejal Desai
- University of California, San Francisco, Department of Bioengineering and Therapeutic Sciences, Byers Hall Rm 203C, MC 2520, 1700 4th Street, San Francisco, California 94158-2330, USA
| | - Lonnie D Shea
- University of Michigan, Department of Biomedical Engineering, 1119 Carl A. Gerstacker Building, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109-2099, USA
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29
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Khalf A, Madihally SV. Recent advances in multiaxial electrospinning for drug delivery. Eur J Pharm Biopharm 2016; 112:1-17. [PMID: 27865991 DOI: 10.1016/j.ejpb.2016.11.010] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 09/06/2016] [Accepted: 11/01/2016] [Indexed: 12/18/2022]
Abstract
Electrospun fibers have seen an insurgence in biomedical applications due to their unique characteristics. Coaxial and triaxial electrospinning techniques have added new impetus via fabrication of multilayered nano and micro-size fibers. These techniques offer the possibility of forming fibers with features such as blending, reinforced core, porous and hollow structure. The unique fabrication process can be used to tailor the mechanical properties, biological properties and release of various factors, which can potentially be useful in various controlled drug delivery applications. Harvesting these advantages, various polymers and their combinations have been explored in a number of drug delivery and tissue regeneration applications. New advances have shown the requirement of drug-polymer compatibility in addition to drug-solvent compatibility. We summarize recent findings using both hydrophilic and hydrophobic (or lipophilic) drugs in hydrophobic or hydrophilic polymers on release behavior. We also describe the fundamental forces involved during the electrospinning process providing insight to the factors to be considered to form fibers. Also, various modeling efforts on the drug release profiles are summarized. In addition new developments in the immune response to the electrospun fibers, and advances in scale-up issues needed for industrial size manufacturing.
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Affiliation(s)
- Abdurizzagh Khalf
- School of Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, United States.
| | - Sundararajan V Madihally
- School of Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, United States.
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30
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Menasché P, Vanneaux V. Stem cells for the treatment of heart failure. Curr Res Transl Med 2016; 64:97-106. [PMID: 27316393 DOI: 10.1016/j.retram.2016.04.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 04/02/2016] [Accepted: 04/08/2016] [Indexed: 12/17/2022]
Abstract
Stem cell-based therapy is currently tested in several trials of chronic heart failure. The main question is to determine how its implementation could be extended to standard clinical practice. To answer this question, it is helpful to capitalize on the three main lessons drawn from the accumulated experience, both in the laboratory and in the clinics. Regarding the cell type, the best outcomes seem to be achieved by cells the phenotype of which closely matches that of the target tissue. This argues in favor of the use of cardiac-committed cells among which the pluripotent stem cell-derived cardiac progeny is particularly attractive. Regarding the mechanism of action, there has been a major paradigm shift whereby cells are no longer expected to structurally integrate within the recipient myocardium but rather to release biomolecules that foster endogenous repair processes. This implies to focus on early cell retention, rather than on sustained cell survival, so that the cells reside in the target tissue long enough and in sufficient amounts to deliver the factors underpinning their action. Biomaterials are here critical adjuncts to optimize this residency time. Furthermore, the paracrine hypothesis gives more flexibility for using allogeneic cells in that targeting an only transient engraftment requires to delay, and no longer to avoid, rejection, which, in turn, should simplify immunomodulation regimens. Regarding manufacturing, a broad dissemination of cardiac cell therapy requires the development of automated systems allowing to yield highly reproducible cell products. This further emphasizes the interest of allogeneic cells because of their suitability for industrially-relevant and cost-effective scale-up and quality control procedures. At the end, definite confirmation that the effects of cells can be recapitulated by the factors they secrete could lead to acellular therapies whereby factors alone (possibly clustered in extracellular vesicles) would be delivered to the patient. The production process of these cell-derived biologics would then be closer to that of a pharmaceutical compound, which could streamline the manufacturing and regulatory paths and thereby facilitate an expended clinical use.
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Affiliation(s)
- P Menasché
- Department of Cardiovascular Surgery, Hôpital Européen Georges Pompidou, 20, rue Leblanc, 75015 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, 75010 Paris, France; INSERM U 970, 75010 Paris, France.
| | - V Vanneaux
- INSERM UMR1160, Institut Universitaire d'Hématologie, 75475 Paris cedex 10, France; Assistance publique-Hôpitaux de Paris, Unité de thérapie cellulaire et CIC de Biothérapies, Hôpital Saint-Louis, 75475 Paris cedex 10, France
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31
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Mutoh T, Mutoh T, Taki Y, Ishikawa T. Therapeutic Potential of Natural Product-Based Oral Nanomedicines for Stroke Prevention. J Med Food 2016; 19:521-7. [PMID: 27136062 DOI: 10.1089/jmf.2015.3644] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Cerebral stroke is the leading cause of death and permanent disability in elderly persons. The impaired glucose and oxygen transport to the brain during ischemia causes bioenergetic failure, leading to oxidative stress, inflammation, blood-brain barrier dysfunction, and eventually cell death. However, the development of effective therapies against stroke has been hampered by insufficient oral absorption of pharmaceuticals and subsequent delivery to the brain. Nanotechnology has emerged as a new method of treating cerebral diseases, with the potential to fundamentally change currently available therapeutic approaches using compounds with low bioavailability. This perspective review provides an overview of the therapeutic potential of oral nanomedicines for stroke, focusing on novel natural product-loaded delivery system with potent antioxidant and anti-inflammatory effects.
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Affiliation(s)
- Tatsushi Mutoh
- 1 Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University , Sendai, Japan .,2 Department of Surgical Neurology, Research Institute for Brain and Blood Vessels-AKITA , Akita, Japan
| | - Tomoko Mutoh
- 1 Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University , Sendai, Japan
| | - Yasuyuki Taki
- 1 Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University , Sendai, Japan
| | - Tatsuya Ishikawa
- 2 Department of Surgical Neurology, Research Institute for Brain and Blood Vessels-AKITA , Akita, Japan
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32
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Abstract
The undesired destruction of healthy cells, either endogenous or transplanted, by the immune system results in the loss of tissue function or limits strategies to restore tissue function. Current therapies typically involve nonspecific immunosuppression that may prevent the appropriate response to an antigen, thereby decreasing humoral immunity and increasing the risks of patient susceptibility to opportunistic infections, viral reactivation, and neoplasia. The induction of antigen-specific immunological tolerance to block undesired immune responses to self- or allogeneic antigens, while maintaining the integrity of the remaining immune system, has the potential to transform the current treatment of autoimmune disease and serve as a key enabling technology for therapies based on cell transplantation.
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Affiliation(s)
- Xunrong Luo
- Department of Medicine, Division of Nephrology and Hypertension.,Comprehensive Cancer Center, and
| | - Stephen D Miller
- Department of Microbiology-Immunology and Interdepartmental Immunobiology Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611; ,
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109;
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