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Zhang Z, He C, Chen X. Designing Hydrogels for Immunomodulation in Cancer Therapy and Regenerative Medicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308894. [PMID: 37909463 DOI: 10.1002/adma.202308894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/26/2023] [Indexed: 11/03/2023]
Abstract
The immune system not only acts as a defense against pathogen and cancer cells, but also plays an important role in homeostasis and tissue regeneration. Targeting immune systems is a promising strategy for efficient cancer treatment and regenerative medicine. Current systemic immunomodulation therapies are usually associated with low persistence time, poor targeting to action sites, and severe side effects. Due to their extracellular matrix-mimetic nature, tunable properties and diverse bioactivities, hydrogels are intriguing platforms to locally deliver immunomodulatory agents and cells, as well as provide an immunomodulatory microenvironment to recruit, activate, and expand host immune cells. In this review, the design considerations, including polymer backbones, crosslinking mechanisms, physicochemical nature, and immunomodulation-related components, of the hydrogel platforms, are focused on. The immunomodulatory effects and therapeutic outcomes in cancer therapy and tissue regeneration of different hydrogel systems are emphasized, including hydrogel depots for delivery of immunomodulatory agents, hydrogel scaffolds for cell delivery, and immunomodulatory hydrogels depending on the intrinsic properties of materials. Finally, the remained challenges in current systems and future development of immunomodulatory hydrogels are discussed.
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Affiliation(s)
- Zhen Zhang
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Chaoliang He
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Xuesi Chen
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
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2
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Souza A, Parnell M, Rodriguez BJ, Reynaud EG. Role of pH and Crosslinking Ions on Cell Viability and Metabolic Activity in Alginate-Gelatin 3D Prints. Gels 2023; 9:853. [PMID: 37998943 PMCID: PMC10670374 DOI: 10.3390/gels9110853] [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: 09/13/2023] [Revised: 10/13/2023] [Accepted: 10/18/2023] [Indexed: 11/25/2023] Open
Abstract
Alginate-gelatin hydrogels are extensively used in bioengineering. However, despite different formulations being used to grow different cell types in vitro, their pH and its effect, together with the crosslinking ions of these formulations, are still infrequently assessed. In this work, we study how these elements can affect hydrogel stability and printability and influence cell viability and metabolism on the resulting 3D prints. Our results show that both the buffer pH and crosslinking ion (Ca2+ or Ba2+) influence the swelling and degradation rates of prints. Moreover, buffer pH influenced the printability of hydrogel in the air but did not when printed directly in a fluid-phase CaCl2 or BaCl2 crosslinking bath. In addition, both U2OS and NIH/3T3 cells showed greater cell metabolic activity on one-layer prints crosslinked with Ca2+. In addition, Ba2+ increased the cell death of NIH/3T3 cells while having no effect on U2OS cell viability. The pH of the buffer also had an important impact on the cell behavior. U2OS cells showed a 2.25-fold cell metabolism increase on one-layer prints prepared at pH 8.0 in comparison to those prepared at pH 5.5, whereas NIH/3T3 cells showed greater metabolism on one-layer prints with pH 7.0. Finally, we observed a difference in the cell arrangement of U2OS cells growing on prints prepared from hydrogels with an acidic buffer in comparison to cells growing on those prepared using a neutral or basic buffer. These results show that both pH and the crosslinking ion influence hydrogel strength and cell behavior.
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Affiliation(s)
- Andrea Souza
- School of Biomolecular and Biomedical Science, University College Dublin, D04 V1W8 Dublin, Ireland; (A.S.); (M.P.)
| | - Matthew Parnell
- School of Biomolecular and Biomedical Science, University College Dublin, D04 V1W8 Dublin, Ireland; (A.S.); (M.P.)
| | | | - Emmanuel G. Reynaud
- School of Biomolecular and Biomedical Science, University College Dublin, D04 V1W8 Dublin, Ireland; (A.S.); (M.P.)
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3
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Zhu F, Wang S, Zhu X, Pang C, Cui P, Yang F, Li R, Zhan Q, Xin H. Potential effects of biomaterials on macrophage function and their signalling pathways. Biomater Sci 2023; 11:6977-7002. [PMID: 37695360 DOI: 10.1039/d3bm01213a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
The use of biomaterials in biomedicine and healthcare has increased in recent years. Macrophages are the primary immune cells that induce inflammation and tissue repair after implantation of biomaterials. Given that macrophages exhibit high heterogeneity and plasticity, the influence of biomaterials on macrophage phenotype should be considered a crucial evaluation criterion during the development of novel biomaterials. This review provides a comprehensive summary of the physicochemical, biological, and dynamic characteristics of biomaterials that drive the regulation of immune responses in macrophages. The mechanisms involved in the interaction between macrophages and biomaterials, including endocytosis, receptors, signalling pathways, integrins, inflammasomes and long non-coding RNAs, are summarised in this review. In addition, research prospects of the interaction between macrophages and biomaterials are discussed. An in-depth understanding of mechanisms underlying the spatiotemporal changes in macrophage phenotype induced by biomaterials and their impact on macrophage polarization can facilitate the identification and development of novel biomaterials with superior performance. These biomaterials may be used for tissue repair and regeneration, vaccine or drug delivery and immunotherapy.
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Affiliation(s)
- Fujun Zhu
- Department of Burns and Plastic Surgery, the No. 924th Hospital of the Joint Logistic Support Force of the Chinese PLA, Guilin, Guangxi 541002, People's Republic of China.
| | - Shaolian Wang
- Central Sterile Supply Department, the No. 924th Hospital of the Joint Logistic Support Force of the Chinese PLA, Guilin, Guangxi 541002, People's Republic of China
| | - Xianglian Zhu
- Outpatient Department, the No. 924th Hospital of the Joint Logistic Support Force of the Chinese PLA, Guilin, Guangxi 541002, People's Republic of China
| | - Caixiang Pang
- Department of Emergency Medicine, the No. 924th Hospital of the Joint Logistic Support Force of the Chinese PLA, Guilin, Guangxi 541002, People's Republic of China
| | - Pei Cui
- Animal Laboratory, the No. 924th Hospital of the Joint Logistic Support Force of the Chinese PLA, Guilin, Guangxi 541002, People's Republic of China
| | - Fuwang Yang
- Department of Burns and Plastic Surgery, the No. 924th Hospital of the Joint Logistic Support Force of the Chinese PLA, Guilin, Guangxi 541002, People's Republic of China.
| | - Rongsheng Li
- Animal Laboratory, the No. 924th Hospital of the Joint Logistic Support Force of the Chinese PLA, Guilin, Guangxi 541002, People's Republic of China
| | - Qiu Zhan
- Animal Laboratory, the No. 924th Hospital of the Joint Logistic Support Force of the Chinese PLA, Guilin, Guangxi 541002, People's Republic of China
| | - Haiming Xin
- Department of Burns and Plastic Surgery, the No. 924th Hospital of the Joint Logistic Support Force of the Chinese PLA, Guilin, Guangxi 541002, People's Republic of China.
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Gilljam KM, Stenlund P, Standoft S, Andersen SB, Kaaber K, Lund H, Bryn KRK. Alginate and Nanocellulose Dressings With Extract From Salmon Roe Reduce Inflammation and Accelerate Healing of Porcine Burn Wounds. J Burn Care Res 2023; 44:1140-1149. [PMID: 36639942 PMCID: PMC10483457 DOI: 10.1093/jbcr/irad006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Indexed: 01/15/2023]
Abstract
Partial-thickness thermal burn wounds are characterized by a prolonged inflammatory response, oxidative stress, tissue damage, and secondary necrosis. An optimal dressing for burn wounds would reduce inflammation and oxidative stress while providing a moist, absorbent, and protective cover. We have developed an extract from unfertilized salmon roe containing components with potential anti-inflammatory and antioxidative properties, called HTX. HTX has been combined with alginate from brown algae and nanocellulose from tunicates, and 3D printed into a solid hydrogel wound dressing called Collex. Here, Collex was tested on partial thickness burn wounds in Göttingen minipigs compared to Jelonet, and a variant of Collex without HTX. We found that dermal treatment of burn wounds with Collex resulted in accelerated healing at a majority of measured points over 23 days, compared to treatment with Jelonet. In comparison to Collex without HTX, Collex enhanced healing in the first week after trauma where wound progression was pronounced. Notably, Collex reduced the inflammatory response in the early post-injury phase. The anti-inflammatory response of Collex was investigated in more detail on activated M1 macrophages. We found that Collex, as well as HTX alone, significantly reduced the secretion of pro-inflammatory interleukin-1β as well as intracellular levels of oxidative stress. The results from this study indicate that Collex is a potent dressing for the treatment of burn wounds, with the anti-inflammatory effect of HTX beneficial in the initial phase, and the moist qualities of the hydrogel favorable both in the initial and the proceeding proliferative phase of wound healing.
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Affiliation(s)
| | - Patrik Stenlund
- RISE Research Institutes of Sweden AB, Department of Methodology, Textile and Medical Technology, Arvid Wallgrens backe 20, SE-413 46 Göteborg, Sweden
| | - Simon Standoft
- RISE Research Institutes of Sweden AB, Department of Methodology, Textile and Medical Technology, Arvid Wallgrens backe 20, SE-413 46 Göteborg, Sweden
| | - Sisse Bindslev Andersen
- Scantox A/S, Department of Toxicology Science, Hestehavevej, 36A, 4623, Lille Skensved, Denmark
| | - Kari Kaaber
- Scantox A/S, Department of Toxicology Science, Hestehavevej, 36A, 4623, Lille Skensved, Denmark
| | - Henrik Lund
- Regenics AS, Gaustadalléen 21, N-0349 Oslo, Norway
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Alsmadi MM, Jaradat MM, Obaidat RM, Alnaief M, Tayyem R, Idkaidek N. The In Vitro, In Vivo, and PBPK Evaluation of a Novel Lung-Targeted Cardiac-Safe Hydroxychloroquine Inhalation Aerogel. AAPS PharmSciTech 2023; 24:172. [PMID: 37566183 DOI: 10.1208/s12249-023-02627-3] [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: 04/20/2023] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 08/12/2023] Open
Abstract
Hydroxychloroquine (HCQ) was repurposed for COVID-19 treatment. Subtherapeutic HCQ lung levels and cardiac toxicity of oral HCQ were overcome by intratracheal (IT) administration of lower HCQ doses. The crosslinker-free supercritical fluid technology (SFT) produces aerogels and impregnates them with drugs in their amorphous form with efficient controlled release. Mechanistic physiologically based pharmacokinetic (PBPK) modeling can predict the lung's epithelial lining fluid (ELF) drug levels. This study aimed to develop a novel HCQ SFT formulation for IT administration to achieve maximal ELF levels and minimal cardiac toxicity. HCQ SFT formulation was prepared and evaluated for physicochemical, in vitro release, pharmacokinetics, and cardiac toxicity. Finally, the rat HCQ ELF concentrations were predicted using PBPK modeling. HCQ was amorphous after loading into the chitosan-alginate nanoporous microparticles (22.7±7.6 μm). The formulation showed a zero-order release, with only 40% released over 30 min compared to 94% for raw HCQ. The formulation had a tapped density of 0.28 g/cm3 and a loading efficiency of 35.3±1.3%. The IT administration of SFT HCQ at 1 mg/kg resulted in 23.7-fold higher bioavailability, fourfold longer MRT, and eightfold faster absorption but lower CK-MB and LDH levels than oral raw HCQ at 4 mg/kg. The PBPK model predicted 6 h of therapeutic ELF levels for IT SFT HCQ and a 100-fold higher ELF-to-heart concentration ratio than oral HCQ. Our findings support the feasibility of lung-targeted and more effective SFT HCQ IT administration for COVID-19 compared to oral HCQ with less cardiac toxicity. Graphical abstract.
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Affiliation(s)
- Mo'tasem M Alsmadi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan.
- Nanotechnology Institute, Jordan University of Science and Technology, Irbid, Jordan.
| | - Mays M Jaradat
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan
| | - Rana M Obaidat
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, The University of Jordan, Amman, Jordan
| | - Mohammad Alnaief
- Department of Pharmaceutical and Chemical Engineering, Faculty of Applied Medical Sciences, German Jordanian University, Amman, Jordan
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Gu Y, Hu Y, Huang S, Ruiz S, Kawai T, Bai Y, Han X. CpG ODN/Mangiferin Dual Delivery through Calcium Alginate Hydrogels Inhibits Immune-Mediated Osteoclastogenesis and Promotes Alveolar Bone Regeneration in Mice. BIOLOGY 2023; 12:976. [PMID: 37508406 PMCID: PMC10376397 DOI: 10.3390/biology12070976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/08/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023]
Abstract
The immune system plays an important role in the skeletal system during bone repair and regeneration. The controlled release of biological factors from the immune system could facilitate and optimize the bone remodeling process through the regulation of the activities of bone cells. This study aimed to determine the effect of the controlled delivery of immunomodulatory biologicals on bone regeneration. Immunostimulatory cytosine-phosphate-guanosine oligodeoxynucleotides (CpG ODN) and glucosylxanthone Mangiferin (MAG)-embedded microbeads were incubated with P. gingivalis-challenged splenocytes, or co-cultured with RAW264.7 cells. The effect of CpG ODN/MAG-containing microbeads on bone regeneration was then tested in vivo in a mouse alveolar bone defect model. The results demonstrated that MAG significantly antagonized P. gingivalis proliferation and reduced the live/dead cell ratio. After the addition of CpG ODN + MAG microbeads, anti-inflammatory cytokines IL-10 and IL-4 were upregulated on day 2 but not day 4, whereas pro-inflammatory cytokine IL-1β responses showed no difference at both timepoints. RANKL production by splenocytes and TRAP+ cell formation of RAW264.7 cells were inhibited by the addition of CpG ODN + MAG microbeads. Alveolar bony defects, filled with CpG ODN + MAG microbeads, showed significantly increased new bone after 4 weeks. In summary, this study evaluated a new hydrogel-based regimen for the local delivery and controlled release of biologicals to repair and regenerate alveolar bony defects. The combined CpG ODN + MAG treatment may promote alveolar bone regeneration through the anti-microbial/anti-inflammatory effects and the inhibition of RANKL-mediated osteoclastogenesis.
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Affiliation(s)
- Yingzhi Gu
- Department of Immunology and Infectious Diseases, The Forsyth Institute, 245 First Street, Cambridge, MA 02142, USA
- Department of Orthodontics, Beijing Stomatological Hospital, Capital Medical University, Beijing 100050, China
| | - Yang Hu
- Department of Immunology and Infectious Diseases, The Forsyth Institute, 245 First Street, Cambridge, MA 02142, USA
| | - Shengyuan Huang
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL 33314, USA
- Department of Stomatology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Sunniva Ruiz
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL 33314, USA
| | - Toshihisa Kawai
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL 33314, USA
| | - Yuxing Bai
- Department of Orthodontics, Beijing Stomatological Hospital, Capital Medical University, Beijing 100050, China
| | - Xiaozhe Han
- Department of Immunology and Infectious Diseases, The Forsyth Institute, 245 First Street, Cambridge, MA 02142, USA
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL 33314, USA
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Guo Y, Wang M, Liu Q, Liu G, Wang S, Li J. Recent advances in the medical applications of hemostatic materials. Theranostics 2023; 13:161-196. [PMID: 36593953 PMCID: PMC9800728 DOI: 10.7150/thno.79639] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 11/14/2022] [Indexed: 12/03/2022] Open
Abstract
Bleeding caused by trauma or surgery is a serious health problem, and uncontrollable bleeding can result in death. Therefore, developing safe, effective, and convenient hemostatic materials is important. Active hemostatic agents currently used to investigate the field of hemostasis are divided into four broad categories: natural polymers, synthetic polymers, inorganic materials, and metal-containing materials. Hemostatic materials are prepared in various forms for wound care applications based on the active ingredients used. These materials include nanofibers, gels, sponges, and nanoparticles. Hemostatic materials find their applications in the field of wound care, and they are also used for hemostasis during malignant tumor surgery. Prompt and effective hemostasis can reduce the possibility of the spread of tumor cells with blood. This review discusses the outcomes of current research conducted in the field and the problems persisting in the field of developing hemostatic materials. The review also presents a platform for the further development of hemostatic materials. Bleeding caused by trauma or surgery is a serious health problem, and uncontrollable bleeding can result in death. Therefore, developing safe, effective, and convenient hemostatic materials is important. Active hemostatic agents currently used to investigate the field of hemostasis are divided into four broad categories: natural polymers, synthetic polymers, inorganic materials, and metal-containing materials. Hemostatic materials are prepared in various forms for wound care applications based on the active ingredients used. These materials include nanofibers, gels, sponges, and nanoparticles. Hemostatic materials find their applications in the field of wound care, and they are also used for hemostasis during malignant tumor surgery. Prompt and effective hemostasis can reduce the possibility of the spread of tumor cells with blood. This review discusses the outcomes of current research conducted in the field and the problems persisting in the field of developing hemostatic materials. The review also presents a platform for the further development of hemostatic materials.
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Affiliation(s)
- Yu Guo
- Department of the General Surgery, Jilin University Second Hospital, Changchun, China
| | - Min Wang
- Department of the General Surgery, Jilin University Second Hospital, Changchun, China
| | - Qi Liu
- Department of the General Surgery, Jilin University Second Hospital, Changchun, China
| | - Guoliang Liu
- Department of Operating Theater and Anesthesiology, Jilin University Second Hospital, Changchun, China
| | - Shuang Wang
- Department of the Dermatology, Jilin University Second Hospital, Changchun, China.,✉ Corresponding authors: Shuang Wang, E-mail: , Department of the Dermatology, Jilin University Second Hospital, Changchun, China. Jiannan Li, E-mail: , Department of the General Surgery, Jilin University Second Hospital, Changchun, China
| | - Jiannan Li
- Department of the General Surgery, Jilin University Second Hospital, Changchun, China.,✉ Corresponding authors: Shuang Wang, E-mail: , Department of the Dermatology, Jilin University Second Hospital, Changchun, China. Jiannan Li, E-mail: , Department of the General Surgery, Jilin University Second Hospital, Changchun, China
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Insights on Some Polysaccharide Gel Type Materials and Their Structural Peculiarities. Gels 2022; 8:gels8120771. [PMID: 36547295 PMCID: PMC9778405 DOI: 10.3390/gels8120771] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/18/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
Global resources have to be used in responsible ways to ensure the world's future need for advanced materials. Ecologically friendly functional materials based on biopolymers can be successfully obtained from renewable resources, and the most prominent example is cellulose, the well-known most abundant polysaccharide which is usually isolated from highly available biomass (wood and wooden waste, annual plants, cotton, etc.). Many other polysaccharides originating from various natural resources (plants, insects, algae, bacteria) proved to be valuable and versatile starting biopolymers for a wide array of materials with tunable properties, able to respond to different societal demands. Polysaccharides properties vary depending on various factors (origin, harvesting, storage and transportation, strategy of further modification), but they can be processed into materials with high added value, as in the case of gels. Modern approaches have been employed to prepare (e.g., the use of ionic liquids as "green solvents") and characterize (NMR and FTIR spectroscopy, X ray diffraction spectrometry, DSC, electronic and atomic force microscopy, optical rotation, circular dichroism, rheological investigations, computer modelling and optimization) polysaccharide gels. In the present paper, some of the most widely used polysaccharide gels will be briefly reviewed with emphasis on their structural peculiarities under various conditions.
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Wang S, Chen Y, Ling Z, Li J, Hu J, He F, Chen Q. The role of dendritic cells in the immunomodulation to implanted biomaterials. Int J Oral Sci 2022; 14:52. [PMCID: PMC9636170 DOI: 10.1038/s41368-022-00203-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/26/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
Considering the substantial role played by dendritic cells (DCs) in the immune system to bridge innate and adaptive immunity, studies on DC-mediated immunity toward biomaterials principally center on their adjuvant effects in facilitating the adaptive immunity of codelivered antigens. However, the effect of the intrinsic properties of biomaterials on dendritic cells has not been clarified. Recently, researchers have begun to investigate and found that biomaterials that are nonadjuvant could also regulate the immune function of DCs and thus affect subsequent tissue regeneration. In the case of proteins adsorbed onto biomaterial surfaces, their intrinsic properties can direct their orientation and conformation, forming “biomaterial-associated molecular patterns (BAMPs)”. Thus, in this review, we focused on the intrinsic physiochemical properties of biomaterials in the absence of antigens that affect DC immune function and summarized the underlying signaling pathways. Moreover, we preliminarily clarified the specific composition of BAMPs and the interplay between some key molecules and DCs, such as heat shock proteins (HSPs) and high mobility group box 1 (HMGB1). This review provides a new direction for future biomaterial design, through which modulation of host immune responses is applicable to tissue engineering and immunotherapy.
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Affiliation(s)
- Siyuan Wang
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Yanqi Chen
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Zhaoting Ling
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Jia Li
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Jun Hu
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Fuming He
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Qianming Chen
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
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10
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Zhu Y, Yang Z, Pan Z, Hao Y, Wang C, Dong Z, Li Q, Han Y, Tian L, Feng L, Liu Z. Metallo-alginate hydrogel can potentiate microwave tumor ablation for synergistic cancer treatment. SCIENCE ADVANCES 2022; 8:eabo5285. [PMID: 35921425 PMCID: PMC9348787 DOI: 10.1126/sciadv.abo5285] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Microwave ablation (MWA) as a local tumor ablation strategy suffers from posttreatment tumor recurrence. Development of adjuvant biomaterials to potentiate MWA is therefore of practical significance. Here, the high concentration of Ca2+ fixed by alginate as Ca2+-surplus alginate hydrogel shows enhanced heating efficiency and restricted heating zone under microwave exposure. The high concentration of extracellular Ca2+ synergizes with mild hyperthermia to induce immunogenic cell death by disrupting intracellular Ca2+ homeostasis. Resultantly, Ca2+-surplus alginate hydrogel plus MWA can ablate different tumors on both mice and rabbits at reduced operation powers. This treatment can also elicit antitumor immunity, especially if synergized with Mn2+, an activator of the stimulation of interferon genes pathway, to suppress the growth of both untreated distant tumors and rechallenged tumors. This work highlights that in situ-formed metallo-alginate hydrogel could act as microwave-susceptible and immunostimulatory biomaterial to reinforce the MWA therapy, promising for clinical translation.
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Hu W, Wang Y, Chen J, Yu P, Tang F, Hu Z, Zhou J, Liu L, Qiu W, Ye Y, Jia Y, Zhou S, Long J, Zeng Z. Regulation of biomaterial implantation-induced fibrin deposition to immunological functions of dendritic cells. Mater Today Bio 2022. [PMID: 35252832 DOI: 10.1016/j.mtadv.2022.100224] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023] Open
Abstract
The performance of implanted biomaterials is largely determined by their interaction with the host immune system. As a fibrous-like 3D network, fibrin matrix formed at the interfaces of tissue and material, whose effects on dendritic cells (DCs) remain unknown. Here, a bone plates implantation model was developed to evaluate the fibrin matrix deposition and DCs recruitment in vivo. The DCs responses to fibrin matrix were further analyzed by a 2D and 3D fibrin matrix model in vitro. In vivo results indicated that large amount of fibrin matrix deposited on the interface between the tissue and bone plates, where DCs were recruited. Subsequent in vitro testing denoted that DCs underwent significant shape deformation and cytoskeleton reorganization, as well as mechanical property alteration. Furthermore, the immune function of imDCs and mDCs were negatively and positively regulated, respectively. The underlying mechano-immunology coupling mechanisms involved RhoA and CDC42 signaling pathways. These results suggested that fibrin plays a key role in regulating DCs immunological behaviors, providing a valuable immunomodulatory strategy for tissue healing, regeneration and implantation.
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Affiliation(s)
- Wenhui Hu
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Yun Wang
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Jin Chen
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Peng Yu
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Fuzhou Tang
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Zuquan Hu
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Jing Zhou
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Lina Liu
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Wei Qiu
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Yuannong Ye
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Yi Jia
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
| | - Shi Zhou
- Department of Interventional Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, PR China
| | - Jinhua Long
- Department of Head & Neck, Affiliated Tumor Hospital of Guizhou Medical University, Guiyang, 550004, PR China
| | - Zhu Zeng
- School of Basic Medical Sciences / School of Biology & Engineering, Guizhou Medical University, Guiyang, 550025, PR China
- Key Laboratory of Infectious Immunity and Antibody Engineering in Guizhou Province, Guiyang, 550025, PR China
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang 550004, Guizhou, PR China
- State Key Laboratory of Functions & Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550004, PR China
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12
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Wang H, Hu B, Li H, Feng G, Pan S, Chen Z, Li B, Song J. Biomimetic Mineralized Hydroxyapatite Nanofiber-Incorporated Methacrylated Gelatin Hydrogel with Improved Mechanical and Osteoinductive Performances for Bone Regeneration. Int J Nanomedicine 2022; 17:1511-1529. [PMID: 35388269 PMCID: PMC8978691 DOI: 10.2147/ijn.s354127] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 03/15/2022] [Indexed: 12/16/2022] Open
Abstract
Purpose Methacrylic anhydride-modified gelatin (GelMA) hydrogels exhibit many beneficial biological features and are widely studied for bone tissue regeneration. However, deficiencies in the mechanical strength, osteogenic factors and mineral ions limit their application in bone defect regeneration. Incorporation of inorganic fillers into GelMA to improve its mechanical properties and bone regenerative ability has been one of the research hotspots. Methods In this work, hydroxyapatite nanofibers (HANFs) were prepared and mineralized in a simulated body fluid to make their components and structure more similar to those of natural bone apatite, and then different amounts of mineralized HANFs (m-HANFs) were incorporated into the GelMA hydrogel to form m-HANFs/GelMA composite hydrogels. The physicochemical properties, biocompatibility and bone regenerative ability of m-HANFs/GelMA were determined in vitro and in vivo. Results The results indicated that m-HANFs with high aspect ratio presented rough and porous surfaces coated with bone-like apatite crystals. The incorporation of biomimetic m-HANFs improved the biocompatibility, mechanical, swelling, degradation and bone regenerative performances of GelMA. However, the improvement in the performance of the composite hydrogel did not continuously increase as the amount of added m-HANFs increased, and the 15m-HANFs/GelMA group exhibited the best swelling and degradation performances and the best bone repair effect in vivo among all the groups. Conclusion The biomimetic m-HANFs/GelMA composite hydrogel can provide a novel option for bone tissue engineering in the future; however, it needs further investigations to optimize the proportions of m-HANFs and GelMA for improving the bone repair effect.
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Affiliation(s)
- He Wang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Bo Hu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Hong Li
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology, Chongqing University of Science and Technology, Chongqing, People’s Republic of China
| | - Ge Feng
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Shengyuan Pan
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Ziqi Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Bo Li
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology, Chongqing University of Science and Technology, Chongqing, People’s Republic of China
- Correspondence: Bo Li, Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology, Chongqing University of Science and Technology, Chongqing, 401331, People’s Republic of China, Tel +86-23-8886-0026, Fax +86-23-8886-0222, Email
| | - Jinlin Song
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
- Jinlin Song, College of Stomatology, Chongqing Medical University, 426# Songshibei Road, Yubei District, Chongqing, 401147, People’s Republic of China, Tel +86-23-8886-0026, Fax +86-23-8886-0222, Email
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13
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Clapacs Z, ONeill CL, Shrimali P, Lokhande G, Files M, Kim DD, Gaharwar AK, Rudra JS. Coiled Coil Crosslinked Alginate Hydrogels Dampen Macrophage-Driven Inflammation. Biomacromolecules 2022; 23:1183-1194. [PMID: 35170303 DOI: 10.1021/acs.biomac.1c01462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Alginate hydrogels are widely used for tissue engineering and regenerative medicine due to their excellent biocompatibility. A facile and commonly used strategy to crosslink alginate is the addition of Ca2+ that leads to hydrogelation. However, extracellular Ca2+ is a secondary messenger in activating inflammasome pathways following physical injury or pathogenic insult, which carries the risk of persistent inflammation and scaffold rejection. Here, we present graft copolymers of charge complementary heterodimeric coiled coil (CC) peptides and alginate that undergo supramolecular self-assembly to form Ca2+ free alginate hydrogels. The formation of heterodimeric CCs was confirmed using circular dichroism spectroscopy, and scanning electron microscopy revealed a significant difference in crosslink density and homogeneity between Ca2+ and CC crosslinked gels. The resulting hydrogels were self-supporting and display shear-thinning and shear-recovery properties. In response to lipopolysaccharide (LPS) stimulation, peritoneal macrophages and bone marrow-derived dendritic cells cultured in the CC crosslinked gels exhibited a 10-fold reduction in secretion of the proinflammatory cytokine IL-1β compared to Ca2+ crosslinked gels. A similar response was also observed in vivo upon peritoneal delivery of Ca2+ or CC crosslinked gels. Analysis of peritoneal lavage showed that macrophages in mice injected with Ca2+ crosslinked gels display a more inflammatory phenotype compared to macrophages from mice injected with CC crosslinked gels. These results suggest that CC peptides by virtue of their tunable sequence-structure-function relationship and mild gelation conditions are promising alternative crosslinkers for alginate and other biopolymer scaffolds used in tissue engineering.
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Affiliation(s)
- Zain Clapacs
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63139, United States
| | - Conor L ONeill
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63139, United States
| | - Paresh Shrimali
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63139, United States
| | - Giriraj Lokhande
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77840, United States
| | - Megan Files
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas 77555, United States
| | - Darren D Kim
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63139, United States
| | - Akhilesh K Gaharwar
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77840, United States
| | - Jai S Rudra
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63139, United States
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14
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PLA/Hydroxyapatite scaffolds exhibit in vitro immunological inertness and promote robust osteogenic differentiation of human mesenchymal stem cells without osteogenic stimuli. Sci Rep 2022; 12:2333. [PMID: 35149687 PMCID: PMC8837663 DOI: 10.1038/s41598-022-05207-w] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 01/07/2022] [Indexed: 02/06/2023] Open
Abstract
Bone defects stand out as one of the greatest challenges of reconstructive surgery. Fused deposition modelling (FDM) allows for the printing of 3D scaffolds tailored to the morphology and size of bone damage in a patient-specific and high-precision manner. However, FDM still suffers from the lack of materials capable of efficiently supporting osteogenesis. In this study, we developed 3D-printed porous scaffolds composed of polylactic acid/hydroxyapatite (PLA/HA) composites with high ceramic contents (above 20%, w/w) by FDM. The mechanical properties of the PLA/HA scaffolds were compatible with those of trabecular bone. In vitro degradation tests revealed that HA can neutralize the acidification effect caused by PLA degradation, while simultaneously releasing calcium and phosphate ions. Importantly, 3D-printed PLA/HA did not induce the upregulation of activation markers nor the expression of inflammatory cytokines in dendritic cells thus exhibiting no immune-stimulatory properties in vitro. Evaluations using human mesenchymal stem cells (MSC) showed that pure PLA scaffolds exerted an osteoconductive effect, whereas PLA/HA scaffolds efficiently induced osteogenic differentiation of MSC even in the absence of any classical osteogenic stimuli. Our findings indicate that 3D-printed PLA scaffolds loaded with high concentrations of HA are most suitable for future applications in bone tissue engineering.
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15
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Hu W, Wang Y, Chen J, Yu P, Tang F, Hu Z, Zhou J, Liu L, Qiu W, Ye Y, Jia Y, Zhou S, Long J, Zeng Z. Regulation of biomaterial implantation-induced fibrin deposition to immunological functions of dendritic cells. Mater Today Bio 2022; 14:100224. [PMID: 35252832 PMCID: PMC8894278 DOI: 10.1016/j.mtbio.2022.100224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 02/16/2022] [Accepted: 02/18/2022] [Indexed: 11/04/2022] Open
Abstract
The performance of implanted biomaterials is largely determined by their interaction with the host immune system. As a fibrous-like 3D network, fibrin matrix formed at the interfaces of tissue and material, whose effects on dendritic cells (DCs) remain unknown. Here, a bone plates implantation model was developed to evaluate the fibrin matrix deposition and DCs recruitment in vivo. The DCs responses to fibrin matrix were further analyzed by a 2D and 3D fibrin matrix model in vitro. In vivo results indicated that large amount of fibrin matrix deposited on the interface between the tissue and bone plates, where DCs were recruited. Subsequent in vitro testing denoted that DCs underwent significant shape deformation and cytoskeleton reorganization, as well as mechanical property alteration. Furthermore, the immune function of imDCs and mDCs were negatively and positively regulated, respectively. The underlying mechano-immunology coupling mechanisms involved RhoA and CDC42 signaling pathways. These results suggested that fibrin plays a key role in regulating DCs immunological behaviors, providing a valuable immunomodulatory strategy for tissue healing, regeneration and implantation.
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16
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Saito T, Shukla NM, Sato-Kaneko F, Sako Y, Hosoya T, Yao S, Lao FS, Messer K, Pu M, Chan M, Chu PJ, Cottam HB, Hayashi T, Carson DA, Corr M. Small Molecule Calcium Channel Activator Potentiates Adjuvant Activity. ACS Chem Biol 2022; 17:217-229. [PMID: 34985883 PMCID: PMC8788586 DOI: 10.1021/acschembio.1c00883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 12/21/2021] [Indexed: 01/07/2023]
Abstract
There remains an unmet need for reliable fully synthetic adjuvants that increase lasting protective immune responses from vaccines. We previously reported a high-throughput screening for small molecules that extended nuclear factor kappa-light-chain enhancer of activated B cells (NF-κB) activation after a Toll-like receptor 4 (TLR4) ligand, lipopolysaccharide (LPS), stimulation using a human myeloid reporter cell line. We identified compounds with a conserved aminothiazole scaffold including 2D216 [N-(4-(2,5-dimethylphenyl)thiazol-2-yl)-4-(piperidin-1-ylsulfonyl)benzamide], which increased murine antigen-specific antibody responses when used as a co-adjuvant with LPS. Here, we examined the mechanism of action in human cells. Although 2D216 activated the major mitogen-activated protein kinases, it did not interact with common kinases and phosphatases and did not stimulate many of the pattern recognition receptors (PRRs). Instead, the mechanism of action was linked to intracellular Ca2+ elevation via Ca2+ channel(s) at the plasma membrane and nuclear translocation of the nuclear factor of activated T-cells (NFAT) as supported by RNA-seq data, analysis by reporter cells, Ca2+ flux assays, and immunoblots. Interestingly, 2D216 had minimal, if any, activity on Jurkat T cells but induced cytokine production and surface expression of costimulatory molecules on cells with antigen-presenting functions. A small series of analogs of 2D216 were tested for the ability to enhance a TLR4 ligand-stimulated autologous mixed lymphocyte reaction (MLR). In the MLR, 2E151, N-(4-(2,5-dimethylphenyl)thiazol-2-yl)-4-((4-propylpiperidin-1-yl)sulfonyl)benzamide, was more potent than 2D216. These results indicate that a small molecule that is not a direct PRR agonist can act as a co-adjuvant to an approved adjuvant to enhance human immune responses via a complementary mechanism of action.
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Affiliation(s)
- Tetsuya Saito
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
- Department
of Rheumatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8519, Japan
| | - Nikunj M. Shukla
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
| | - Fumi Sato-Kaneko
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
| | - Yukiya Sako
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
| | - Tadashi Hosoya
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
- Department
of Rheumatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8519, Japan
| | - Shiyin Yao
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
| | - Fitzgerald S. Lao
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
| | - Karen Messer
- Herbert
Wertheim School of Public Health and Longevity, University of California San Diego, La Jolla, California 92093-0901, United States
| | - Minya Pu
- Herbert
Wertheim School of Public Health and Longevity, University of California San Diego, La Jolla, California 92093-0901, United States
| | - Michael Chan
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
| | - Paul J. Chu
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
| | - Howard B. Cottam
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
| | - Tomoko Hayashi
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
| | - Dennis A. Carson
- Moores
Cancer Center, University of California
San Diego, La Jolla, California 92093-0809, United States
| | - Maripat Corr
- Department
of Medicine, University of California San
Diego, La Jolla, California 92093-0656, United States
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17
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Coron AE, Kjesbu JS, Kjærnsmo F, Oberholzer J, Rokstad AMA, Strand BL. Pericapsular fibrotic overgrowth mitigated in immunocompetent mice through microbead formulations based on sulfated or intermediate G alginates. Acta Biomater 2022; 137:172-185. [PMID: 34634509 DOI: 10.1016/j.actbio.2021.10.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 10/01/2021] [Accepted: 10/04/2021] [Indexed: 12/31/2022]
Abstract
Cell encapsulation in alginate microbeads is a promising approach to provide immune isolation in cell therapy without immunosuppression. However, the efficacy is hampered by pericapsular fibrotic overgrowth (PFO), causing encapsulated cells to lose function. Stability of the microbeads is important to maintain immune isolation in the long-term. Here, we report alginate microbeads with minimal PFO in immunocompetent C57BL/6JRj mice. Microbead formulations included either alginate with an intermediate (47 %) guluronate (G) content (IntG) or sulfated alginate (SA), gelled in Ca2+/Ba2+ or Sr2+. A screening panel of eleven microbead formulations were evaluated for PFO, yielding multiple promising microbeads. Two candidate formulations were evaluated for 112 days in vivo, exhibiting maintained stability and minimal PFO. Microbeads investigated in a human whole blood assay revealed low cytokine and complement responses, while SA microbeads activated coagulation. Protein deposition on microbeads explanted from mice investigated by confocal laser scanning microscopy (CLSM) showed minimal deposition of complement C3. Fibrinogen was positively associated with PFO, with a high deposition on microbeads of high G (68 %) alginate compared to IntG and SA microbeads. Overall, stable microbeads containing IntG or SA may serve in long-term therapeutic applications of cell encapsulation. STATEMENT OF SIGNIFICANCE: Alginate-based hydrogels in the format of micrometer size beads is a promising approach for the immunoisolation of cells in cell therapy. Clinical trials in type 1 diabetes have so far had limited success due to fibrotic responses that hinder the diffusion of nutrients and oxygen to the encapsulated cells, resulting in graft failure. In this study, minimal fibrotic response towards micrometer size alginate beads was achieved by chemical modification of alginate with sulfate groups. Also, the use of alginate with intermediate guluronic acid content resulted in minimally fibrotic microbeads. Fibrinogen deposition was revealed to be a good indicator of fibrosis. This study points to both new microsphere developments and novel insight in the mechanisms behind the fibrotic responses.
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Affiliation(s)
- Abba E Coron
- NOBIPOL, Department of Biotechnology and Food Science, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.; Centre of Molecular Inflammation Research, Department of Clinical and Molecular Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - Joachim S Kjesbu
- NOBIPOL, Department of Biotechnology and Food Science, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Fredrikke Kjærnsmo
- NOBIPOL, Department of Biotechnology and Food Science, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.; Centre of Molecular Inflammation Research, Department of Clinical and Molecular Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - José Oberholzer
- Charles O. Strickler Transplant Center. Division of Transplantation, Department of Surgery, University of Virginia, VA 22903, USA
| | - Anne Mari A Rokstad
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Research, Norwegian University of Science and Technology, Trondheim, Norway.; Centre for Obesity, Clinic of Surgery, St. Olav's University Hospital, NO-7006 Trondheim, Norway
| | - Berit L Strand
- NOBIPOL, Department of Biotechnology and Food Science, Norwegian University of Science and Technology, N-7491 Trondheim, Norway..
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18
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Mooranian A, Jones M, Ionescu CM, Walker D, Wagle SR, Kovacevic B, Chester J, Foster T, Johnston E, Kuthubutheen J, Brown D, Mikov M, Al-Salami H. Artificial Cell Encapsulation for Biomaterials and Tissue Bio-Nanoengineering: History, Achievements, Limitations, and Future Work for Potential Clinical Applications and Transplantation. J Funct Biomater 2021; 12:68. [PMID: 34940547 PMCID: PMC8704355 DOI: 10.3390/jfb12040068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 02/06/2023] Open
Abstract
Pancreatic β-cell loss and failure with subsequent deficiency of insulin production is the hallmark of type 1 diabetes (T1D) and late-stage type 2 diabetes (T2D). Despite the availability of parental insulin, serious complications of both types are profound and endemic. One approach to therapy and a potential cure is the immunoisolation of β cells via artificial cell microencapsulation (ACM), with ongoing promising results in human and animal studies that do not depend on immunosuppressive regimens. However, significant challenges remain in the formulation and delivery platforms and potential immunogenicity issues. Additionally, the level of impact on key metabolic and disease biomarkers and long-term benefits from human and animal studies stemming from the encapsulation and delivery of these cells is a subject of continuing debate. The purpose of this review is to summarise key advances in this field of islet transplantation using ACM and to explore future strategies, limitations, and hurdles as well as upcoming developments utilising bioengineering and current clinical trials.
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Affiliation(s)
- Armin Mooranian
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Melissa Jones
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Corina Mihaela Ionescu
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Daniel Walker
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Susbin Raj Wagle
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Bozica Kovacevic
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Jacqueline Chester
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Thomas Foster
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Edan Johnston
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | | | - Daniel Brown
- Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Perth, WA 6102, Australia;
| | - Momir Mikov
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21101 Novi Sad, Serbia;
| | - Hani Al-Salami
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
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19
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Mooranian A, Jones M, Ionescu CM, Walker D, Wagle SR, Kovacevic B, Chester J, Foster T, Johnston E, Mikov M, Al-Salami H. Advancements in Assessments of Bio-Tissue Engineering and Viable Cell Delivery Matrices Using Bile Acid-Based Pharmacological Biotechnologies. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1861. [PMID: 34361247 PMCID: PMC8308343 DOI: 10.3390/nano11071861] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/07/2021] [Accepted: 07/14/2021] [Indexed: 12/18/2022]
Abstract
The utilisation of bioartificial organs is of significant interest to many due to their versatility in treating a wide range of disorders. Microencapsulation has a potentially significant role in such organs. In order to utilise microcapsules, accurate characterisation and analysis is required to assess their properties and suitability. Bioartificial organs or transplantable microdevices must also account for immunogenic considerations, which will be discussed in detail. One of the most characterized cases is the investigation into a bioartificial pancreas, including using microencapsulation of islets or other cells, and will be the focus subject of this review. Overall, this review will discuss the traditional and modern technologies which are necessary for the characterisation of properties for transplantable microdevices or organs, summarizing analysis of the microcapsule itself, cells and finally a working organ. Furthermore, immunogenic considerations of such organs are another important aspect which is addressed within this review. The various techniques, methodologies, advantages, and disadvantages will all be discussed. Hence, the purpose of this review is providing an updated examination of all processes for the analysis of a working, biocompatible artificial organ.
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Affiliation(s)
- Armin Mooranian
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Melissa Jones
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Corina Mihaela Ionescu
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Daniel Walker
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Susbin Raj Wagle
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Bozica Kovacevic
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Jacqueline Chester
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Thomas Foster
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Edan Johnston
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
| | - Momir Mikov
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21101 Novi Sad, Serbia;
| | - Hani Al-Salami
- The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Health Innovation Research Institute, Curtin University, Bentley, Perth, WA 6102, Australia; (A.M.); (M.J.); (C.M.I.); (D.W.); (S.R.W.); (B.K.); (J.C.); (T.F.); (E.J.)
- Hearing Therapeutics, Ear Science Institute Australia, Queen Elizabeth II Medical Centre, Nedlands, Perth, WA 6009, Australia
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20
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The Feasibility of Using Pulsed-Vacuum in Stimulating Calcium-Alginate Hydrogel Balls. Foods 2021; 10:foods10071521. [PMID: 34359394 PMCID: PMC8304266 DOI: 10.3390/foods10071521] [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: 05/25/2021] [Revised: 06/21/2021] [Accepted: 06/26/2021] [Indexed: 11/17/2022] Open
Abstract
The effect of the pulsed-vacuum stimulation (PVS) on the external gelation process of calcium-alginate (Ca-Alg) hydrogel balls was studied. The process was conducted at four different working pressures (8, 35, 61, and 101 kPa) for three pulsed-vacuum cycles (one cycle consisted of three repetitions of 10 min of depressurization and 10 min of vacuum liberation). The diffusion coefficients (D) of calcium cations (Ca2+) gradually reduced over time and were significantly pronounced (p < 0.05) at the first three hours of the external gelation process. The rate of weight reduction (WR) and rate of volume shrinkage (Sv) varied directly according to the D value of Ca2+. A significant linear relationship between WR and Sv was observed for all working pressures (R2 > 0.91). An application of a pulsed vacuum at 8 kPa led to the highest weight reduction and shrinkage of Ca-Alg hydrogel samples compared to other working pressures, while 61 kPa seemed to be the best condition. Although all textural characteristics (hardness, breaking deformation, Young’s modulus, and rupture strength) did not directly variate by the level of working pressures, they were likely correlated with the levels of WR and Sv. Scanning electron micrographs (SEM) supported that the working pressure affected the characteristics of Ca-Alg hydrogel structure. Samples stimulated at a working pressure of 8 kPa showed higher deformation with heterogenous structure, large cavities, and looser layer when compared with those at 61 kPa. These results indicate the PVS is a promising technology that can be effectively applied in the external gelation process of Ca-Alg gel.
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21
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Amorim S, Soares da Costa D, Pashkuleva I, Reis CA, Reis RL, Pires RA. 3D hydrogel mimics of the tumor microenvironment: the interplay among hyaluronic acid, stem cells and cancer cells. Biomater Sci 2021; 9:252-260. [DOI: 10.1039/d0bm00843e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A 3D tumor microenvironment model is presented, combining hyaluronic acid (HA) and alginate. The model can be used to mimic the bioactivity of HA in gastric cancer, as well as the crosstalk between cancer cells and mesenchymal stem cells.
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Affiliation(s)
- Sara Amorim
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
| | - Diana Soares da Costa
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
| | - Iva Pashkuleva
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
| | | | - Rui L. Reis
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
| | - Ricardo A. Pires
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
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22
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Enck K, Tamburrini R, Deborah C, Gazia C, Jost A, Khalil F, Alwan A, Orlando G, Opara EC. Effect of alginate matrix engineered to mimic the pancreatic microenvironment on encapsulated islet function. Biotechnol Bioeng 2020; 118:1177-1185. [PMID: 33270214 DOI: 10.1002/bit.27641] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 11/15/2020] [Accepted: 11/21/2020] [Indexed: 12/13/2022]
Abstract
Islet transplantation is emerging as a therapeutic option for type 1 diabetes, albeit, only a small number of patients meeting very stringent criteria are eligible for the treatment because of the side effects of the necessary immunosuppressive therapy and the relatively short time frame of normoglycemia that most patients achieve. The challenge of the immune-suppressive regimen can be overcome through microencapsulation of the islets in a perm-selective coating of alginate microbeads with poly-l-lysine or poly- l-ornithine. In addition to other issues including the nutrient supply challenge of encapsulated islets a critical requirement for these cells has emerged as the need to engineer the microenvironment of the encapsulation matrix to mimic that of the native pancreatic scaffold that houses islet cells. That microenvironment includes biological and mechanical cues that support the viability and function of the cells. In this study, the alginate hydrogel was modified to mimic the pancreatic microenvironment by incorporation of extracellular matrix (ECM). Mechanical and biological changes in the encapsulating alginate matrix were made through stiffness modulation and incorporation of decellularized ECM, respectively. Islets were then encapsulated in this new biomimetic hydrogel and their insulin production was measured after 7 days in vitro. We found that manipulation of the alginate hydrogel matrix to simulate both physical and biological cues for the encapsulated islets enhances the mechanical strength of the encapsulated islet constructs as well as their function. Our data suggest that these modifications have the potential to improve the success rate of encapsulated islet transplantation.
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Affiliation(s)
- Kevin Enck
- Wake Forest School of Medicine, Virginia Tech School of Biomedical Engineering & Sciences (SBES), Wake Forest University, Winston-Salem, North Carolina.,Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina
| | - Riccardo Tamburrini
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina.,Department of Surgery, Wake Forest University, Winston-Salem, North Carolina
| | - Chaimov Deborah
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina.,Department of Surgery, Wake Forest University, Winston-Salem, North Carolina
| | - Carlo Gazia
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina.,Department of Surgery, Wake Forest University, Winston-Salem, North Carolina
| | - Alec Jost
- Wake Forest School of Medicine, Wake Forest University, Winston-Salem, North Carolina
| | - Fatma Khalil
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina
| | - Abdelrahman Alwan
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina
| | - Giuseppe Orlando
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina.,Department of Surgery, Wake Forest University, Winston-Salem, North Carolina
| | - Emmanuel C Opara
- Wake Forest School of Medicine, Virginia Tech School of Biomedical Engineering & Sciences (SBES), Wake Forest University, Winston-Salem, North Carolina.,Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina
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23
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Preparation of Hybrid Alginate-Chitosan Aerogel as Potential Carriers for Pulmonary Drug Delivery. Polymers (Basel) 2020; 12:polym12102223. [PMID: 32992662 PMCID: PMC7601040 DOI: 10.3390/polym12102223] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 09/24/2020] [Accepted: 09/25/2020] [Indexed: 12/13/2022] Open
Abstract
This study aims to prepare hybrid chitosan-alginate aerogel microparticles without using additional ionic crosslinker as a possible pulmonary drug delivery system. The microparticles were prepared using the emulsion gelation method. The effect of the mixing order of the biopolymer within the emulsion and the surfactant used on final particle properties were investigated. Physicochemical characterizations were performed to evaluate particle size, density, morphology, surface area, surface charge, and the crystallinity of the preparation. The developed preparation was evaluated for its acute toxicity in adult male Sprague-Dawley rats. Measurements of zeta potential suggest that the surface charge depends mainly on the surfactant type while the order of biopolymer mixing has less impact on the surface charge. Chitosan amphiphilic properties changed the hydrophilic-lipophilic balance (HLB) of the emulsifying agents. The specific surface area of the prepared microparticles was in the range of (29.36-86.20) m2/g with a mesoporous pore size of (12.48-13.38) nm and pore volume of (0.09-0.29) cm3/g. The calculated aerodynamic diameter of the prepared particles was in the range of (0.17-2.29 µm). Toxicity studies showed that alginate-chitosan carrier developed herein caused mild lung inflammation with some renal and hepatic toxicities.
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24
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Zhu F, Tong Y, Wu Y, Dong N, Sheng Z, Yao Y. Immunomodulatory property and its regulatory mechanism of double network hydrogel on dendritic cells. J Biomed Mater Res A 2020; 109:1015-1026. [PMID: 32856407 DOI: 10.1002/jbm.a.37091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 08/14/2020] [Accepted: 08/25/2020] [Indexed: 11/06/2022]
Abstract
Modulation of the key immune cell subsets by biomaterial has emerged as a potential target to promote tissue repair and regeneration. Based on calcium alginate (Alg) and glycol chitosan (GC), an injectable double-network (DN) hydrogel has been developed as a scaffold for cell delivery and cell cocultured system. Previous studies have documented the interaction between dendritic cells (DCs) and GC or Alg hydrogel, but the potential effect of DN hydrogel on activation of DCs still remains unclear. This research was conducted to explore the immunomodulatory influence and underlying mechanisms of GC/Alg DN hydrogel on DCs in vitro and in vivo. Stimulation of DCs with DN hydrogel obviously induced the maturation of DCs in vitro. In vivo, DN hydrogel did not have obvious influence on the maturation of splenic DCs on postimplantation days 3, 10, and 30. Mechanistically, we found that DN hydrogel induced the maturation of DCs via phosphorylation of phosphatidylinositol 3-kinase/protein kinase B/mammalian target of rapamycin in vitro. It provides a novel understanding of the immunomodulatory property of DN hydrogel on DCs, which may serve as potential target for designing immune-mediated regenerative strategies.
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Affiliation(s)
- Fujun Zhu
- Chinese PLA General Hospital and Medical School of Chinese PLA, Beijing, China.,Trauma Research Center, Fourth Medical Center and Medical Innovation Research Department of Chinese PLA General Hospital, Beijing, China.,Department of Burns, Plastic, and Wound Repair Surgery, The 924th Hospital of the Joint Logistic Support Force of Chinese PLA, Guilin, China
| | - Yalin Tong
- Department of Burns, Plastic, and Wound Repair Surgery, The 924th Hospital of the Joint Logistic Support Force of Chinese PLA, Guilin, China
| | - Yao Wu
- Trauma Research Center, Fourth Medical Center and Medical Innovation Research Department of Chinese PLA General Hospital, Beijing, China
| | - Ning Dong
- Trauma Research Center, Fourth Medical Center and Medical Innovation Research Department of Chinese PLA General Hospital, Beijing, China
| | - Zhiyong Sheng
- Chinese PLA General Hospital and Medical School of Chinese PLA, Beijing, China.,Trauma Research Center, Fourth Medical Center and Medical Innovation Research Department of Chinese PLA General Hospital, Beijing, China
| | - Yongming Yao
- Chinese PLA General Hospital and Medical School of Chinese PLA, Beijing, China.,Trauma Research Center, Fourth Medical Center and Medical Innovation Research Department of Chinese PLA General Hospital, Beijing, China
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25
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Moody CT, Palvai S, Brudno Y. Click cross-linking improves retention and targeting of refillable alginate depots. Acta Biomater 2020; 112:112-121. [PMID: 32497743 PMCID: PMC7365769 DOI: 10.1016/j.actbio.2020.05.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 05/23/2020] [Accepted: 05/26/2020] [Indexed: 12/13/2022]
Abstract
Injectable alginate hydrogels have demonstrated utility in tissue engineering and drug delivery applications due in part to their mild gelation conditions, low host responses and chemical versatility. Recently, the potential of these gels has expanded with the introduction of refillable hydrogel depots - alginate gels chemically decorated with click chemistry groups to efficiently capture prodrug refills from the blood. Unfortunately, high degrees of click group substitution on alginate lead to poor viscoelastic properties and loss of ionic cross-linking. In this work, we introduce tetrabicyclononyne (tBCN) agents that covalently cross-link azide-modified alginate hydrogels for tissue engineering and drug delivery application in vivo. Adjusting cross-linker concentration allowed tuning the hydrogel mechanical properties for tissue-specific mechanical strength. The bioorthogonal and specific click reaction creates stable hydrogels with improved in vivo properties, including improved retention at injected sites. Azide-alginate hydrogels cross-linked with tBCN elicited minimal inflammation and maintained structural integrity over several months and efficiently captured therapeutics drug surrogates from the circulation. Taken together, azide-alginate hydrogels cross-linked with tBCN convey the benefits of alginate hydrogels for use in tissue engineering and drug delivery applications of refillable drug delivery depots. STATEMENT OF SIGNIFICANCE: Ionically cross-linked, injectable alginate biomaterials hold promise in many different clinical settings. However, adding new chemical functionality to alginate can disrupt their ionic cross-linking, limiting their utility. We have developed a "click" cross-linking strategy to improve the mechanical properties and tissue function of modified alginate biomaterials and enable them to capture small molecule drugs from the blood. We show that click cross-linked materials remain in place better than ionically cross-linked materials and efficiently capture payloads from the blood. Development of click cross-linking for refillable depots represents a crucial step toward clinical application of this promising drug delivery platform.
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Affiliation(s)
- Christopher T Moody
- Joint Department of Biomedical Engineering, University of North Carolina - Chapel Hill and North Carolina State University - Raleigh, 1840 Entrepreneur Drive, Raleigh, NC 27695, USA
| | - Sandeep Palvai
- Joint Department of Biomedical Engineering, University of North Carolina - Chapel Hill and North Carolina State University - Raleigh, 1840 Entrepreneur Drive, Raleigh, NC 27695, USA
| | - Yevgeny Brudno
- Joint Department of Biomedical Engineering, University of North Carolina - Chapel Hill and North Carolina State University - Raleigh, 1840 Entrepreneur Drive, Raleigh, NC 27695, USA.
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26
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Alsmadi MM, Obaidat RM, Alnaief M, Albiss BA, Hailat N. Development, In Vitro Characterization, and In Vivo Toxicity Evaluation of Chitosan-Alginate Nanoporous Carriers Loaded with Cisplatin for Lung Cancer Treatment. AAPS PharmSciTech 2020; 21:191. [PMID: 32661587 DOI: 10.1208/s12249-020-01735-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 06/16/2020] [Indexed: 12/12/2022] Open
Abstract
Polysaccharide-based aerogels are promising drug carriers. Being nanoporous with a high specific surface area allows their use as a drug vehicle for various delivery routes. Intratracheal and intravenous administration of free cisplatin causes toxicity in the rat liver, lungs, and kidneys. In this work, microspherical particles based on alginate-chitosan without a traditional crosslinker were evaluated for targeted delivery of cisplatin by intratracheal administration. The aerogel particles were prepared using the emulsion gelation method, followed by supercritical carbon dioxide extraction. Loading of cisplatin on the prepared porous particles was performed by impregnation using supercritical fluid technology. The prepared carrier and the loaded drug were evaluated for drug content, release, and in vivo acute and subacute toxicity. Cisplatin was successfully loaded (percent drug loading > 76%) on the prepared carrier (particle size = 0.433 ± 0.091 μm) without chemically interacting with the carrier and without losing its crystal form. Sixty percent of cisplatin was released within 2 h, and the rest was loaded inside the polymer pores and had a sustained first-order release over 6 h. Loading cisplatin on the carrier developed herein reduced the cisplatin lung toxicity but increased the liver toxicity after intratracheal administration with nephrotoxicity being proportional to cisplatin dose in case of carrier-loaded cisplatin. Moreover, loading cisplatin on the carrier significantly reduced mortality rate and prevented weight loss in rats as compared to free cisplatin in subacute studies after intratracheal administration. Thus, the developed carrier showed high potential for targeted delivery of cisplatin for lung cancer treatment by inhalation. Graphical abstract.
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27
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Zhao Z, Vizetto-Duarte C, Moay ZK, Setyawati MI, Rakshit M, Kathawala MH, Ng KW. Composite Hydrogels in Three-Dimensional in vitro Models. Front Bioeng Biotechnol 2020; 8:611. [PMID: 32656197 PMCID: PMC7325910 DOI: 10.3389/fbioe.2020.00611] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 05/19/2020] [Indexed: 12/12/2022] Open
Abstract
3-dimensional (3D) in vitro models were developed in order to mimic the complexity of real organ/tissue in a dish. They offer new possibilities to model biological processes in more physiologically relevant ways which can be applied to a myriad of applications including drug development, toxicity screening and regenerative medicine. Hydrogels are the most relevant tissue-like matrices to support the development of 3D in vitro models since they are in many ways akin to the native extracellular matrix (ECM). For the purpose of further improving matrix relevance or to impart specific functionalities, composite hydrogels have attracted increasing attention. These could incorporate drugs to control cell fates, additional ECM elements to improve mechanical properties, biomolecules to improve biological activities or any combinations of the above. In this Review, recent developments in using composite hydrogels laden with cells as biomimetic tissue- or organ-like constructs, and as matrices for multi-cell type organoid cultures are highlighted. The latest composite hydrogel systems that contain nanomaterials, biological factors, and combinations of biopolymers (e.g., proteins and polysaccharide), such as Interpenetrating Networks (IPNs) and Soft Network Composites (SNCs) are also presented. While promising, challenges remain. These will be discussed in light of future perspectives toward encompassing diverse composite hydrogel platforms for an improved organ environment in vitro.
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Affiliation(s)
- Zhitong Zhao
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Catarina Vizetto-Duarte
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Zi Kuang Moay
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | | | - Moumita Rakshit
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | | | - Kee Woei Ng
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
- Environmental Chemistry & Materials Centre, Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, Singapore, Singapore
- Skin Research Institute of Singapore, Singapore, Singapore
- Center for Nanotechnology and Nanotoxicology, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, United States
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28
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Taghipour YD, Hokmabad VR, Del Bakhshayesh AR, Asadi N, Salehi R, Nasrabadi HT. The Application of Hydrogels Based on Natural Polymers for Tissue Engineering. Curr Med Chem 2020; 27:2658-2680. [DOI: 10.2174/0929867326666190711103956] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 06/26/2019] [Accepted: 06/26/2019] [Indexed: 12/22/2022]
Abstract
:Hydrogels are known as polymer-based networks with the ability to absorb water and other body fluids. Because of this, the hydrogels are used to preserve drugs, proteins, nutrients or cells. Hydrogels possess great biocompatibility, and properties like soft tissue, and networks full of water, which allows oxygen, nutrients, and metabolites to pass. Therefore, hydrogels are extensively employed as scaffolds in tissue engineering. Specifically, hydrogels made of natural polymers are efficient structures for tissue regeneration, because they mimic natural environment which improves the expression of cellular behavior.:Producing natural polymer-based hydrogels from collagen, hyaluronic acid (HA), fibrin, alginate, and chitosan is a significant tactic for tissue engineering because it is useful to recognize the interaction between scaffold with a tissue or cell, their cellular reactions, and potential for tissue regeneration. The present review article is focused on injectable hydrogels scaffolds made of biocompatible natural polymers with particular features, the methods that can be employed to engineer injectable hydrogels and their latest applications in tissue regeneration.
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Affiliation(s)
- Yasamin Davatgaran Taghipour
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | | | - Nahideh Asadi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Roya Salehi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamid Tayefi Nasrabadi
- Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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29
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Affiliation(s)
- Matthew L. Bedell
- Department of Bioengineering, Rice University, 6500 South Main Street, Houston, Texas 77030, United States
| | - Adam M. Navara
- Department of Bioengineering, Rice University, 6500 South Main Street, Houston, Texas 77030, United States
| | - Yingying Du
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
- Institute of Regulatory Science for Medical Devices, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shengmin Zhang
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
- Institute of Regulatory Science for Medical Devices, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Antonios G. Mikos
- Department of Bioengineering, Rice University, 6500 South Main Street, Houston, Texas 77030, United States
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30
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Alginate-nanohydroxyapatite hydrogel system: Optimizing the formulation for enhanced bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:109985. [DOI: 10.1016/j.msec.2019.109985] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 06/14/2019] [Accepted: 07/18/2019] [Indexed: 01/04/2023]
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Gao C, Wang X, Du Q, Tang J, Jiang J. Generation of perfusable hollow calcium alginate microfibers with a double co-axial flow capillary microfluidic device. BIOMICROFLUIDICS 2019; 13:064108. [PMID: 31737157 PMCID: PMC6840859 DOI: 10.1063/1.5116225] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 09/11/2019] [Indexed: 05/31/2023]
Abstract
This paper describes a highly controllable method to generate hollow calcium alginate microfibers using a double co-axial flow microdevice. The microdevice was fabricated by concentric assembly of two modules; each module consisted of a shortened cone-pulled glass capillary embedded in a polymethylmethacrylate fluidic block. Using this microdevice, cylindrical hollow calcium alginate microfibers with either straight or helical inner walls were stably and continuously generated. The radii of the hollow microfibers were not arbitrary, and in fact, the ratio of the outer to inner diameter was inversely correlated with the combination of core flow rate and the first sheath flow rate. The relationships between the geometrical features of the helix and the flow rates were also analyzed. The helical pitch and the spiral radius of the helical hollow microfibers were strongly influenced by the second sheath flow rate. Finally, guidelines for generating highly controllable straight and helical hollow microfibers and fabricating a seamless flow connector using this microfluidic device are suggested.
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Affiliation(s)
- Chongjian Gao
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, China
| | - Xuedong Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, China
| | - Qian Du
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, China
| | - Junying Tang
- Department of Gynecology and Obstetrics, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Jiahuan Jiang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, China
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Clay NE, Villanueva C, You T, Wrice N, Kowalczewski A, Christy RJ, Natesan S. Plasma-Alginate Composite Material Provides Improved Mechanical Support for Stem Cell Growth and Delivery. ACS APPLIED BIO MATERIALS 2019; 2:4271-4282. [PMID: 35021442 DOI: 10.1021/acsabm.9b00544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Blood plasma-based products have been recently utilized in different tissue engineering applications, ranging from soft tissue repair to bone regeneration. Plasma contains fibrinogen which can be converted to an insoluble fibrin-laden gel in the presence of activated thrombin. In tissue engineering, these plasma-based materials can serve either as a three-dimensional scaffold to deliver therapeutic cells in vivo or as a growth factor-rich supply for tissue regeneration. Unfortunately, plasma-based materials are often mechanically weak and easily deformed, thus limiting their usability in harsh clinical settings. Simpler methods to create sturdier plasma-based materials are therefore needed. To this end, we hypothesized that combining alginate with plasma can create a composite plasma material with improved mechanical properties. Incorporating alginate into plasma produced composite gels with increasing bulk stiffness, as measured by rheology. Specifically, the plasma-alginate composite (PAC) gels with an alginate concentration of 2.86 mg/mL were 10-fold stiffer than pure plasma gels (11 vs 112 Pa). Interestingly, gel lysis rates were unchanged despite increasing alginate concentration (lysis time approximately 50 min). Adipose-derived stem cells cultured in the stiffer PAC gels expressed stemness markers (THY1, ENG, NT5E) at levels comparable to those in the pure plasma gels. Similarly, proangiogenic factor secretion was also constant across all gel conditions. In sum, we envision this PAC gel system will extend the use of plasma gel-based therapies into more rigorous clinical applications.
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Zhu FJ, Tong YL, Sheng ZY, Yao YM. Role of dendritic cells in the host response to biomaterials and their signaling pathways. Acta Biomater 2019; 94:132-144. [PMID: 31108257 DOI: 10.1016/j.actbio.2019.05.038] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 05/09/2019] [Accepted: 05/15/2019] [Indexed: 12/15/2022]
Abstract
Strategies to enhance, inhibit, or qualitatively modulate immune responses are important for diverse biomedical applications such as vaccine adjuvant, drug delivery, immunotherapy, cell transplant, tissue engineering, and regenerative medicine. However, the clinical efficiency of these biomaterial systems is affected by the limited understanding of their interaction with complex host microenvironments, for example, excessive foreign body reaction and immunotoxicity. Biomaterials and biomedical devices implanted in the body may induce a highly complicated and orchestrated series of host responses. As macrophages are among the first cells to infiltrate and respond to implanted biomaterials, the macrophage-mediated host response to biomaterials has been well studied. Dendritic cells (DCs) are the most potent antigen-presenting cells that activate naive T cells and bridge innate and adaptive immunity. The potential interaction of DCs with biomaterials appears to be critical for exerting the function of biomaterials and has become an important, developing area of investigation. Herein, we summarize the effects of the physicochemical properties of biomaterials on the immune function of DCs together with their receptors and signaling pathways. This review might provide a complete understanding of the interaction of DCs with biomaterials and serve as a reference for the design and selection of biomaterials with particular effects on targeted cells. STATEMENT OF SIGNIFICANCE: Biomaterials implanted in the body are increasingly applied in clinical practice. The performance of these implanted biomaterials is largely dependent on their interaction with the host immune system. As antigen-presenting cells, dendritic cells (DCs) directly interact with biomaterials through pattern recognition receptors (PRRs) recognizing "biomaterial-associated molecular patterns" and generate a battery of immune responses. In this review, the physicochemical properties of biomaterials that regulate the immune function of DCs together with their receptors and signaling pathways of biomaterial-DC interactions are summarized and discussed. We believe that knowledge of the interplay of DC and biomaterials may spur clinical translation by guiding the design and selection of biomaterials with particular effects on targeted cell for tissue engineering, vaccine delivery, and cancer therapy.
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Lueckgen A, Garske DS, Ellinghaus A, Mooney DJ, Duda GN, Cipitria A. Enzymatically-degradable alginate hydrogels promote cell spreading and in vivo tissue infiltration. Biomaterials 2019; 217:119294. [PMID: 31276949 DOI: 10.1016/j.biomaterials.2019.119294] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 06/20/2019] [Indexed: 02/08/2023]
Abstract
Enzymatically-degradable materials recapitulate the dynamic and reciprocal interactions between cells and their native microenvironment by allowing cells to actively shape the degradation process. In order to engineer a synthetic 3D environment enabling cells to orchestrate the degradation of the surrounding material, norbornene-modified alginate was crosslinked with two different peptide crosslinkers susceptible to cleavage by matrix metalloproteinases using UV-initiated thiol-ene chemistry. Resulting hydrogels were characterized for their initial mechanical and rheological properties, and their degradation behavior was measured by tracking changes in wet weight upon enzyme incubation. This process was found to be a function of the crosslinker type and enzyme concentration, indicating that degradation kinetics could be controlled and tuned. When mouse embryonic fibroblasts were encapsulated in 3D, cell number remained constant and viability was high in all materials, while cell spreading and extensive filopodia formation was observed only in the degradable gels, not in non-degradable controls. After implanting hydrogels into the backs of C57/Bl6 mice for 8 weeks, histological stainings of recovered gel remnants and surrounding tissue revealed higher tissue and cell infiltration into degradable materials compared to non-degradable controls. This alginate-based material platform with cell-empowered enzymatic degradation could prove useful in diverse tissue engineering contexts, such as regeneration and drug delivery.
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Affiliation(s)
- Aline Lueckgen
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Daniela S Garske
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany; Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, 14476 Potsdam, Germany
| | - Agnes Ellinghaus
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - David J Mooney
- School of Engineering and Applied Sciences - Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Georg N Duda
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Amaia Cipitria
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany; Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, 14476 Potsdam, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany.
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Clarkin OM, Wu B, Cahill PA, Brougham DF, Banerjee D, Brady SA, Fox EK, Lally C. Novel injectable gallium-based self-setting glass-alginate hydrogel composite for cardiovascular tissue engineering. Carbohydr Polym 2019; 217:152-159. [PMID: 31079672 DOI: 10.1016/j.carbpol.2019.04.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 04/01/2019] [Accepted: 04/02/2019] [Indexed: 11/19/2022]
Abstract
Composite biomaterials offer a new approach for engineering novel, minimally-invasive scaffolds with properties that can be modified for a range of soft tissue applications. In this study, a new way of controlling the gelation of alginate hydrogels using Ga-based glass particles is presented. Through a comprehensive analysis, it was shown that the setting time, mechanical strength, stiffness and degradation properties of this composite can all be tailored for various applications. Specifically, the hydrogel generated through using a glass particle, wherein toxic aluminium is replaced with biocompatible gallium, exhibited enhanced properties. The material's stiffness matches that of soft tissues, while it displays a slow and tuneable gelation rate, making it a suitable candidate for minimally-invasive intra-vascular injection. In addition, it was also found that this composite can be tailored to deliver ions into the local cellular environment without affecting platelet adhesion or compromising viability of vascular cells in vitro.
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Affiliation(s)
- Owen M Clarkin
- DCU Biomaterials Research Group, Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin 9, Ireland
| | - Bing Wu
- DCU Biomaterials Research Group, Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin 9, Ireland; DUBBLE Beamline, European Synchrotron Radiation Facility (ESRF), 71 avenue des Martyrs, CS 40220, Grenoble, 38043, France; School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Paul A Cahill
- Vascular Biology and Therapeutic Laboratory, School of Biotechnology, Faculty of Science and Health, Dublin City University, Dublin 9, Ireland
| | - Dermot F Brougham
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Dipanjan Banerjee
- DUBBLE Beamline, European Synchrotron Radiation Facility (ESRF), 71 avenue des Martyrs, CS 40220, Grenoble, 38043, France; Department of Chemistry, KU Leuven, Celestijnenlaan 200F box 2404, 3001, Leuven, Belgium
| | - Sarah A Brady
- DCU Biomaterials Research Group, Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin 9, Ireland
| | - Eoin K Fox
- DCU Biomaterials Research Group, Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin 9, Ireland
| | - Caitríona Lally
- Department of Mechanical and Manufacturing Engineering, School of Engineering and Trinity Centre for Bioengineering, Trinity College Dublin, Dublin 2, Ireland
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36
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Sontyana AG, Mathew AP, Cho KH, Uthaman S, Park IK. Biopolymeric In Situ Hydrogels for Tissue Engineering and Bioimaging Applications. Tissue Eng Regen Med 2018; 15:575-590. [PMID: 30603580 PMCID: PMC6171699 DOI: 10.1007/s13770-018-0159-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/20/2018] [Accepted: 08/21/2018] [Indexed: 10/28/2022] Open
Abstract
BACKGROUND Biopolymeric in situ hydrogels play a crucial role in the regenerative repair and replacement of infected or injured tissue. They possess excellent biodegradability and biocompatibility in the biological system, however only a few biopolymeric in situ hydrogels have been approved clinically. Researchers have been investigating new advancements and designs to restore tissue functions and structure, and these studies involve a composite of biometrics, cells and a combination of factors that can repair or regenerate damaged tissue. METHODS Injectable hydrogels, cross-linking mechanisms, bioactive materials for injectable hydrogels, clinically applied injectable biopolymeric hydrogels and the bioimaging applications of hydrogels were reviewed. RESULTS This article reviews the different types of biopolymeric injectable hydrogels, their gelation mechanisms, tissue engineering, clinical applications and their various in situ imaging techniques. CONCLUSION The applications of bioactive injectable hydrogels and their bioimaging are a promising area in tissue engineering and regenerative medicine. There is a high demand for injectable hydrogels for in situ imaging.
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Affiliation(s)
- Adonijah Graham Sontyana
- Department of Biomedical Sciences, Chonnam National University, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Ansuja Pulickal Mathew
- Department of Biomedical Sciences, Chonnam National University, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Ki-Hyun Cho
- Department of Plastic Surgery, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195 USA
| | - Saji Uthaman
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Daejeon, 34134 Republic of Korea
| | - In-Kyu Park
- Department of Biomedical Sciences, Chonnam National University, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju, 61469 Republic of Korea
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37
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Gao Y, Jin X. Characterizing the degradation behavior of calcium alginate fibers wound dressings fabricated by needle-punching process. J Appl Polym Sci 2018. [DOI: 10.1002/app.46670] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yingjun Gao
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles; Donghua University; Shanghai 201620 China
| | - Xiangyu Jin
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles; Donghua University; Shanghai 201620 China
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38
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Shen T, Yang W, Shen X, Chen W, Tao B, Yang X, Yuan J, Liu P, Cai K. Polydopamine-Assisted Hydroxyapatite and Lactoferrin Multilayer on Titanium for Regulating Bone Balance and Enhancing Antibacterial Property. ACS Biomater Sci Eng 2018; 4:3211-3223. [DOI: 10.1021/acsbiomaterials.8b00791] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Tingting Shen
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
| | - Weihu Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
| | - Xinkun Shen
- School of Life Science, Chongqing University, Chongqing 400044, P. R. China
| | - Weizhen Chen
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
| | - Bailong Tao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
| | - Xiaoqing Yang
- College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, P. R. China
| | - Jianping Yuan
- National Key Laboratory of Aerospace Flight Dynamics, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Peng Liu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
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39
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Ma S, Mukherjee N. Microfluidics Fabrication of Soft Microtissues and Bottom-Up Assembly. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201800119] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Shaohua Ma
- Tsinghua-Berkeley Shenzhen Institute; Tsinghua University; Shenzhen China
| | - Nobina Mukherjee
- Department of Chemistry; University of Oxford; OX1 3TA Oxford UK
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40
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Shih T, Blacklow SO, Li AW, Freedman BR, Bencherif S, Koshy ST, Darnell MC, Mooney DJ. Injectable, Tough Alginate Cryogels as Cancer Vaccines. Adv Healthc Mater 2018; 7:e1701469. [PMID: 29441705 DOI: 10.1002/adhm.201701469] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 01/17/2018] [Indexed: 12/26/2022]
Abstract
A covalently crosslinked methacrylated (MA)-alginate cryogel vaccine has been previously shown to generate a potent response against murine melanoma, but is not mechanically robust and requires a large 16G needle for delivery. Here, covalent and ionic crosslinking of cryogels are combined with the hypothesis that this will result in a tough MA-alginate cryogel with improved injectability. All tough cryogels can be injected through a smaller, 18G needle without sustaining any damage, while covalently crosslinked-only cryogels break after injection. Cytosine-phosphodiester-guanine (CpG)-delivering tough cryogels effectively activate dendritic cells (DCs). Granulocyte macrophage colony-stimulating factor releasing tough cryogels recruit four times more DCs than blank gels by day 7 in vivo. The tough cryogel vaccine induces strong antigen-specific cytotoxic T-lymphocyte and humoral responses. These vaccines prevent tumor formation in 80% of mice inoculated with HER2/neu-overexpressing DD breast cancer cells. The MA-alginate tough cryogels provide a promising minimally invasive delivery platform for cancer vaccinations.
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Affiliation(s)
- Ting‐Yu Shih
- John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University Boston MA 02115 USA
| | - Serena O. Blacklow
- John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA
| | - Aileen W. Li
- John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University Boston MA 02115 USA
| | - Benjamin R. Freedman
- John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University Boston MA 02115 USA
| | - Sidi Bencherif
- John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University Boston MA 02115 USA
- Laboratory of Biomechanics & Bioengineering (BMBI) UMR CNRS 7388 Sorbonne University University of Technology of Compiègne (UTC) 60200 Compiègne France
- Department of Chemical Engineering Northeastern University Boston MA 02115 USA
| | - Sandeep T. Koshy
- John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University Boston MA 02115 USA
- Harvard–MIT Division of Health Sciences and Technology Cambridge MA 02139 USA
| | - Max C. Darnell
- John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University Boston MA 02115 USA
| | - David J. Mooney
- John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University Boston MA 02115 USA
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41
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Li Y, Lou C, Wang W. STIM1 deficiency protects the liver from ischemia/reperfusion injury in mice. Biochem Biophys Res Commun 2018; 496:422-428. [PMID: 29305862 DOI: 10.1016/j.bbrc.2018.01.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 01/02/2018] [Indexed: 02/07/2023]
Abstract
Hepatic ischemia reperfusion (I/R) injury is unavoidable in various clinical conditions. Despite considerable investigation, the underlying molecular mechanism revealing liver I/R injury remains elusive. Stromal interaction molecule 1 (STIM1) plays essential role in regulating the induction of cellular responses to a number of stress conditions, including temperature changes, elevated ROS, and hypoxia. Here, to explore if STIM1 is involved in hepatic injury, wild type (WT) and STIM1-knockout (STIM1-/-) mice were subjected to I/R. Our results indicated that the WT mice with hepatic I/R injury showed higher STIM1 expressions from gene and protein levels in liver tissue samples. Similar results were observed in hypoxia-exposed cells in vitro. Significantly, STIM1-/- attenuated hepatic injury compared to the WT mice after I/R, as evidenced by the improved pathological alterations in liver sections. WT mice subjected to liver I/R showed higher serum alanine aminotransferase (ALT) and aminotransferase (AST) levels, as well as pro-inflammatory cytokines, tumor necrosis factor-α (TNF-α), interleukin (IL)-6 and IL-1β, which were significantly reduced by STIM1-/-. In addition, STIM1-/- also decreased the liver mRNA levels of pro-inflammatory cytokines in mice after I/R injury. Furthermore, significantly decreased oxidative stress was found in STIM1-/- mice after I/R injury compared to the WT group of mice, evidenced by the enhanced superoxide dismutase (SOD) activity and the reduced malondialdehyde (MDA) and reactive oxygen species (ROS) levels in liver tissue samples. Moreover, STIM1-/- mice with hepatic I/R injury displayed the down-regulated nuclear factor of activated T cell (NFAT1), Orai1 and cleaved Caspase-3 levels in liver, contributing to apoptosis suppression. The results above were confirmed in hypoxia-treated cells lacking of STIM1 expression. Together, the findings suggested that STIM1-deletion protects the liver from I/R injury in mice through inhibiting inflammation, oxidative stress and apoptosis. STIM1 could be considered as a potential therapeutic target to ameliorate I/R injury.
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Affiliation(s)
- Yanyang Li
- Department of Pediatrics, Huaihe Hospital, Henan University, Kaifeng 475000, China.
| | - Chunyan Lou
- Department of Pediatrics, Huaihe Hospital, Henan University, Kaifeng 475000, China
| | - Weiying Wang
- Department of Pediatrics, Huaihe Hospital, Henan University, Kaifeng 475000, China
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Lee D, Park JP, Koh MY, Kim P, Lee J, Shin M, Lee H. Chitosan-catechol: a writable bioink under serum culture media. Biomater Sci 2018; 6:1040-1047. [DOI: 10.1039/c8bm00174j] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Mussel-inspired adhesive polymers exhibiting rapid complexation with serum proteins are used as a direct writable bioink for additive techniques, 3D printing. The mussel-inspired bioinks would be a promising way to design a biocompatible 3D bioink cross-linked without any external stimuli.
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Affiliation(s)
- Daiheon Lee
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- South Korea
| | - Joseph P. Park
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- South Korea
| | - Mi-Young Koh
- InnoTherapy Inc. 97 Uisadang-daero
- Seoul 07327
- South Korea
| | - Pureum Kim
- Bio-Mechatronics Team
- Division of Nano-Machinery
- Korea Institute of Machinery and Materials(KIMM)
- Daejeon 34103
- South Korea
| | - Junhee Lee
- Bio-Mechatronics Team
- Division of Nano-Machinery
- Korea Institute of Machinery and Materials(KIMM)
- Daejeon 34103
- South Korea
| | - Mikyung Shin
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- South Korea
| | - Haeshin Lee
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- South Korea
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Jepsen MS, Sellathurai J, Conti A, Schrøder HD, Lund L. Treatment of Vesicovaginal Fistulas With Autologous Cell Injections—A Randomized Study in an Animal Model. Technol Cancer Res Treat 2017. [PMCID: PMC5762034 DOI: 10.1177/1533034617691615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Purpose: Materials and Methods: Results: Conclusion:
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Affiliation(s)
- Marianne S. Jepsen
- Department of Urology, Odense University Hospital, Odense C, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Jeeva Sellathurai
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Clinical Pathology, Odense University Hospital, Odense C, Denmark
| | - Alessandro Conti
- Department of Urology, Odense University Hospital, Odense C, Denmark
- Department of Clinical and Specialist Sciences, Urology, Università Politecnica delle Marche, Ancona, Italy
| | - Henrik D. Schrøder
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Clinical Pathology, Odense University Hospital, Odense C, Denmark
| | - Lars Lund
- Department of Urology, Odense University Hospital, Odense C, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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Use of hydrogel scaffolds to develop an in vitro 3D culture model of human intestinal epithelium. Acta Biomater 2017; 62:128-143. [PMID: 28859901 DOI: 10.1016/j.actbio.2017.08.035] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 08/17/2017] [Accepted: 08/27/2017] [Indexed: 01/25/2023]
Abstract
The human intestinal cell lines: Caco-2 and HT29-MTX cells have been used extensively in 2D and 3D cell cultures as simple models of the small intestinal epithelium in vitro. This study aimed to investigate the potential of three hydrogel scaffolds to support the 3D culture of Caco-2 and HT29-MTX cells and critically assess their use as scaffolds to stimulate villi formation to model a small intestinal epithelium in vitro. Here, alginate, l-pNIPAM, and l-pNIPAM-co-DMAc hydrogels were investigated. The cells were suspended within or layered on these hydrogels and maintained under static or dynamic culture conditions for up to 21days. Caco-2 cell viability was increased when layered on the synthetic hydrogel scaffolds, but reduced when suspended within the synthetic hydrogels. In contrast, HT29-MTX cells remained viable when suspended within or layered on all 3D cultures. Interestingly, cells cultured in and on the alginate hydrogel scaffolds formed multilayer spheroid structures, whilst the cells layered on synthetic hydrogels formed villus-like structures. Immunohistochemistry staining demonstrated positive expression of enterocyte differentiation markers and goblet cell marker. In conclusion, l-pNIPAM hydrogel scaffolds supported both cell lines and induced formation of villus-like structures when cells were layered on and cultured under dynamic conditions. The ability of the l-pNIPAM to recapitulate the 3D structure and differentiate main cell types of human intestinal villi may deliver a potential alternative in vitro model for studying intestinal disease and for drug testing. STATEMENT OF SIGNIFICANCE Forty percent of hospital referrals are linked to disorders of the digestive tract. Current studies have utilised animal models or simple cultures of isolated cells which do not behave in the same manner as human intestine. Thus new models are required which more closely mimic the behaviour of intestinal cells. Here, we tested a number of scaffolds and conditions to develop a cell culture model which closely represents the 3D environment seen within the human small intestine. We successfully created structures seen within the intestine which have not previously been possible with other culture models. These models could be used to investigate tissue engineering, drug discovery, and used asan alternative to in vivo animal models in drug toxicity studies.
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Polysaccharide Hydrogels Support the Long-Term Viability of Encapsulated Human Mesenchymal Stem Cells and Their Ability to Secrete Immunomodulatory Factors. Stem Cells Int 2017; 2017:9303598. [PMID: 29158741 PMCID: PMC5660815 DOI: 10.1155/2017/9303598] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 08/03/2017] [Accepted: 08/08/2017] [Indexed: 01/06/2023] Open
Abstract
While therapeutically interesting, the injection of MSCs suffers major limitations including cell death upon injection and a massive leakage outside the injection site. We proposed to entrap MSCs within spherical particles derived from alginate, as a control, or from silanized hydroxypropyl methylcellulose (Si-HPMC). We developed water in an oil dispersion method to produce small Si-HPMC particles with an average size of about 68 μm. We evidenced a faster diffusion of fluorescein isothiocyanate-dextran in Si-HPMC particles than in alginate ones. Human adipose-derived MSCs (hASC) were encapsulated either in alginate or in Si-HPMC, and the cellularized particles were cultured for up to 1 month. Both alginate and Si-HPMC particles supported cell survival, and the average number of encapsulated hASC per alginate and Si-HPMC particle (7102 and 5100, resp.) did not significantly change. The stimulation of encapsulated hASC with proinflammatory cytokines resulted in the production of IDO, PGE2, and HGF whose concentration was always higher when cells were encapsulated in Si-HPMC particles than in alginate ones. We have demonstrated that Si-HPMC and alginate particles support hASC viability and the maintenance of their ability to secrete therapeutic factors.
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Cipitria A, Boettcher K, Schoenhals S, Garske DS, Schmidt-Bleek K, Ellinghaus A, Dienelt A, Peters A, Mehta M, Madl CM, Huebsch N, Mooney DJ, Duda GN. In-situ tissue regeneration through SDF-1α driven cell recruitment and stiffness-mediated bone regeneration in a critical-sized segmental femoral defect. Acta Biomater 2017; 60:50-63. [PMID: 28739546 DOI: 10.1016/j.actbio.2017.07.032] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 06/23/2017] [Accepted: 07/20/2017] [Indexed: 12/28/2022]
Abstract
In-situ tissue regeneration aims to utilize the body's endogenous healing capacity through the recruitment of host stem or progenitor cells to an injury site. Stromal cell-derived factor-1α (SDF-1α) is widely discussed as a potent chemoattractant. Here we use a cell-free biomaterial-based approach to (i) deliver SDF-1α for the recruitment of endogenous bone marrow-derived stromal cells (BMSC) into a critical-sized segmental femoral defect in rats and to (ii) induce hydrogel stiffness-mediated osteogenic differentiation in-vivo. Ionically crosslinked alginate hydrogels with a stiffness optimized for osteogenic differentiation were used. Fast-degrading porogens were incorporated to impart a macroporous architecture that facilitates host cell invasion. Endogenous cell recruitment to the defect site was successfully triggered through the controlled release of SDF-1α. A trend for increased bone volume fraction (BV/TV) and a significantly higher bone mineral density (BMD) were observed for gels loaded with SDF-1α, compared to empty gels at two weeks. A trend was also observed, albeit not statistically significant, towards matrix stiffness influencing BV/TV and BMD at two weeks. However, over a six week time-frame, these effects were insufficient for bone bridging of a segmental femoral defect. While mechanical cues combined with ex-vivo cell encapsulation have been shown to have an effect in the regeneration of less demanding in-vivo models, such as cranial defects of nude rats, they are not sufficient for a SDF-1α mediated in-situ regeneration approach in segmental femoral defects of immunocompetent rats, suggesting that additional osteogenic cues may also be required. STATEMENT OF SIGNIFICANCE Stromal cell-derived factor-1α (SDF-1α) is a chemoattractant used to recruit host cells for tissue regeneration. The concept that matrix stiffness can direct mesenchymal stromal cell (MSC) differentiation into various lineages was described a decade ago using in-vitro experiments. Recently, alginate hydrogels with an optimized stiffness and ex-vivo encapsulated MSCs were shown to have an effect in the regeneration of skull defects of nude rats. Here, we apply this material system, loaded with SDF-1α and without encapsulated MSCs, to (i) recruit endogenous cells and (ii) induce stiffness-mediated osteogenic differentiation in-vivo, using as model system a load-bearing femoral defect in immunocompetent rats. While a cell-free approach is of great interest from a translational perspective, the current limitations are described.
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Affiliation(s)
- Amaia Cipitria
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany.
| | - Kathrin Boettcher
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Sophia Schoenhals
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Daniela S Garske
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Katharina Schmidt-Bleek
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Agnes Ellinghaus
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Anke Dienelt
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Anja Peters
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Manav Mehta
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany; School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Christopher M Madl
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Nathaniel Huebsch
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - David J Mooney
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Georg N Duda
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
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Yang J, Zhang YS, Yue K, Khademhosseini A. Cell-laden hydrogels for osteochondral and cartilage tissue engineering. Acta Biomater 2017; 57:1-25. [PMID: 28088667 PMCID: PMC5545789 DOI: 10.1016/j.actbio.2017.01.036] [Citation(s) in RCA: 374] [Impact Index Per Article: 53.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 12/21/2016] [Accepted: 01/10/2017] [Indexed: 12/11/2022]
Abstract
Despite tremendous advances in the field of regenerative medicine, it still remains challenging to repair the osteochondral interface and full-thickness articular cartilage defects. This inefficiency largely originates from the lack of appropriate tissue-engineered artificial matrices that can replace the damaged regions and promote tissue regeneration. Hydrogels are emerging as a promising class of biomaterials for both soft and hard tissue regeneration. Many critical properties of hydrogels, such as mechanical stiffness, elasticity, water content, bioactivity, and degradation, can be rationally designed and conveniently tuned by proper selection of the material and chemistry. Particularly, advances in the development of cell-laden hydrogels have opened up new possibilities for cell therapy. In this article, we describe the problems encountered in this field and review recent progress in designing cell-hydrogel hybrid constructs for promoting the reestablishment of osteochondral/cartilage tissues. Our focus centers on the effects of hydrogel type, cell type, and growth factor delivery on achieving efficient chondrogenesis and osteogenesis. We give our perspective on developing next-generation matrices with improved physical and biological properties for osteochondral/cartilage tissue engineering. We also highlight recent advances in biomanufacturing technologies (e.g. molding, bioprinting, and assembly) for fabrication of hydrogel-based osteochondral and cartilage constructs with complex compositions and microarchitectures to mimic their native counterparts. STATEMENT OF SIGNIFICANCE Despite tremendous advances in the field of regenerative medicine, it still remains challenging to repair the osteochondral interface and full-thickness articular cartilage defects. This inefficiency largely originates from the lack of appropriate tissue-engineered biomaterials that replace the damaged regions and promote tissue regeneration. Cell-laden hydrogel systems have emerged as a promising tissue-engineering platform to address this issue. In this article, we describe the fundamental problems encountered in this field and review recent progress in designing cell-hydrogel constructs for promoting the reestablishment of osteochondral/cartilage tissues. Our focus centers on the effects of hydrogel composition, cell type, and growth factor delivery on achieving efficient chondrogenesis and osteogenesis. We give our perspective on developing next-generation hydrogel/inorganic particle/stem cell hybrid composites with improved physical and biological properties for osteochondral/cartilage tissue engineering. We also highlight recent advances in biomanufacturing and bioengineering technologies (e.g. 3D bioprinting) for fabrication of hydrogel-based osteochondral and cartilage constructs.
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Affiliation(s)
- Jingzhou Yang
- Biomaterials Innovation Research Center, Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02115, MA, USA; Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Guangzhou Women and Children's Medical Center, Sun Yat-sen University, Guangzhou 510623, Guangdong, People's Republic of China
| | - Yu Shrike Zhang
- Biomaterials Innovation Research Center, Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02115, MA, USA; Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Kan Yue
- Biomaterials Innovation Research Center, Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02115, MA, USA; Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Ali Khademhosseini
- Biomaterials Innovation Research Center, Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston 02115, MA, USA; Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul 143-701, Republic of Korea; Department of Physics, King Abdulaziz University, Jeddah 21569, Saudi Arabia.
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Hu Y, Mao AS, Desai RM, Wang H, Weitz DA, Mooney DJ. Controlled self-assembly of alginate microgels by rapidly binding molecule pairs. LAB ON A CHIP 2017; 17. [PMID: 28627581 PMCID: PMC5559697 DOI: 10.1039/c7lc00500h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Controlled self-assembly of cell-encapsulating microscale polymeric hydrogels (microgels) could be advantageous in a variety of tissue engineering and regenerative medicine applications. Here, a method of assembly by chemical modification of alginate polymer with binding pair molecules (BPM) was explored. Alginate was modified with several types of BPM, specifically biotin and streptavidin and click chemistry compounds, and fabricated into 25-30 μm microgels using a microfluidic platform. These microgels were demonstrated to self-assemble under physiological conditions. By combining complementary microgels at a high ratio, size-defined assemblages were created, and the effects of BPM type and assembly method on the number of microgels per assemblage and packing density were determined. Furthermore, a magnetic process was developed to separate assemblages from single microgels, and allow formation of multilayer spheroids. Finally, cells were singly encapsulated into alginate microgels and assembled using BPM-modified alginate, suggesting potential applications in regenerative medicine.
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Affiliation(s)
- Yuebi Hu
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford St, Cambridge, MA 02138, USA.
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Andorko JI, Jewell CM. Designing biomaterials with immunomodulatory properties for tissue engineering and regenerative medicine. Bioeng Transl Med 2017; 2:139-155. [PMID: 28932817 PMCID: PMC5579731 DOI: 10.1002/btm2.10063] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 04/14/2017] [Accepted: 04/24/2017] [Indexed: 12/29/2022] Open
Abstract
Recent research in the vaccine and immunotherapy fields has revealed that biomaterials have the ability to activate immune pathways, even in the absence of other immune-stimulating signals. Intriguingly, new studies reveal these responses are influenced by the physicochemical properties of the material. Nearly all of this work has been done in the vaccine and immunotherapy fields, but there is tremendous opportunity to apply this same knowledge to tissue engineering and regenerative medicine. This review discusses recent findings that reveal how material properties-size, shape, chemical functionality-impact immune response, and links these changes to emerging opportunities in tissue engineering and regenerative medicine. We begin by discussing what has been learned from studies conducted in the contexts of vaccines and immunotherapies. Next, research is highlighted that elucidates the properties of materials that polarize innate immune cells, including macrophages and dendritic cells, toward either inflammatory or wound healing phenotypes. We also discuss recent studies demonstrating that scaffolds used in tissue engineering applications can influence cells of the adaptive immune system-B and T cell lymphocytes-to promote regenerative tissue microenvironments. Through greater study of the intrinsic immunogenic features of implantable materials and scaffolds, new translational opportunities will arise to better control tissue engineering and regenerative medicine applications.
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Affiliation(s)
- James I. Andorko
- Fischell Department of BioengineeringUniversity of MarylandCollege ParkMD 20742
| | - Christopher M. Jewell
- Fischell Department of BioengineeringUniversity of MarylandCollege ParkMD 20742
- Department of Microbiology and ImmunologyUniversity of Maryland Medical SchoolBaltimoreMD 21201
- Marlene and Stewart Greenebaum Cancer CenterBaltimoreMD 21201
- United States Department of Veterans AffairsBaltimoreMD 21201
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Nurlidar F, Kobayashi M, Terada K, Ando T, Tanihara M. Cytocompatible polyion complex gel of poly(Pro-Hyp-Gly) for simultaneous rat bone marrow stromal cell encapsulation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:1480-1496. [PMID: 28514893 DOI: 10.1080/09205063.2017.1331872] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Polyion complex (PIC) gel of poly(Pro-Hyp-Gly) was successfully fabricated by simply mixing polyanion and polycation derivatives of poly(Pro-Hyp-Gly), a collagen-like polypeptide. The polyanion, succinylated poly(Pro-Hyp-Gly), and the polycation, arginylated poly(Pro-Hyp-Gly), contain carboxy (pKa = 5.2) and guanidinium (pKa = 12.4) groups, respectively. Mixing the polyanion and the polycation at physiological pH (pH = 7.4) resulted in PIC gel. The hydrogel formation was optimum at an equimolar ratio of carboxy to guanidinium groups, suggesting that ionic interaction is the main determinant for the hydrogel formation. The hydrogel was successfully used for simultaneous rat bone marrow stromal cell encapsulation. The encapsulated cells survived and proliferated within the hydrogel. In addition, the cells exhibited different morphology in the hydrogel compared with cells cultured on a tissue culture dish as a two-dimensional (2D) control. At day one, a round morphology and homogeneous single cell distribution were observed in the hydrogel. In contrast, the cells spread and formed a fibroblast-like morphology on the 2D control. After three days, the cells in the hydrogel maintained their morphology and some of them formed multicellular aggregates, which is similar to cell morphology in an in vivo microenvironment. These results suggest that the PIC gel of poly(Pro-Hyp-Gly) can serve as a cytocompatible three-dimensional scaffold for stem cell encapsulation, supporting their viability, proliferation, and in vivo-like behavior.
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Affiliation(s)
- Farah Nurlidar
- a Graduate School of Materials Science , Nara Institute of Science and Technology , Nara , Japan
| | - Mime Kobayashi
- a Graduate School of Materials Science , Nara Institute of Science and Technology , Nara , Japan
| | - Kayo Terada
- a Graduate School of Materials Science , Nara Institute of Science and Technology , Nara , Japan
| | - Tsuyoshi Ando
- a Graduate School of Materials Science , Nara Institute of Science and Technology , Nara , Japan
| | - Masao Tanihara
- a Graduate School of Materials Science , Nara Institute of Science and Technology , Nara , Japan
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