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Peng H, Liu Y, Xiao F, Zhang L, Li W, Wang B, Weng Z, Liu Y, Chen G. Research progress of hydrogels as delivery systems and scaffolds in the treatment of secondary spinal cord injury. Front Bioeng Biotechnol 2023; 11:1111882. [PMID: 36741755 PMCID: PMC9889880 DOI: 10.3389/fbioe.2023.1111882] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/09/2023] [Indexed: 01/19/2023] Open
Abstract
Secondary spinal cord injury (SSCI) is the second stage of spinal cord injury (SCI) and involves vasculature derangement, immune response, inflammatory response, and glial scar formation. Bioactive additives, such as drugs and cells, have been widely used to inhibit the progression of secondary spinal cord injury. However, the delivery and long-term retention of these additives remain a problem to be solved. In recent years, hydrogels have attracted much attention as a popular delivery system for loading cells and drugs for secondary spinal cord injury therapy. After implantation into the site of spinal cord injury, hydrogels can deliver bioactive additives in situ and induce the unidirectional growth of nerve cells as scaffolds. In addition, physical and chemical methods can endow hydrogels with new functions. In this review, we summarize the current state of various hydrogel delivery systems for secondary spinal cord injury treatment. Moreover, functional modifications of these hydrogels for better therapeutic effects are also discussed to provide a comprehensive insight into the application of hydrogels in the treatment of secondary spinal cord injury.
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Affiliation(s)
- Haichuan Peng
- Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai People’s Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China
| | - Yongkang Liu
- The Department of Cerebrovascular Disease, Zhuhai People’s Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China
| | - Fengfeng Xiao
- Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai People’s Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China
| | - Limei Zhang
- Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai People’s Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China
| | - Wenting Li
- Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai People’s Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China
| | - Binghan Wang
- Zhuhai Precision Medical Center, Zhuhai People’s Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China
| | - Zhijian Weng
- The Department of Neurosurgery, Zhuhai People’s Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China
| | - Yu Liu
- The Department of Cerebrovascular Disease, Zhuhai People’s Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China,*Correspondence: Yu Liu, ; Gang Chen,
| | - Gang Chen
- The Department of Neurosurgery, Zhuhai People’s Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China,*Correspondence: Yu Liu, ; Gang Chen,
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2
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Pearce HA, Swain JWR, Victor LH, Hogan KJ, Jiang EY, Bedell ML, Navara AM, Farsheed A, Kim YS, Guo JL, Hartgerink JD, Grande-Allen KJ, Mikos AG. Thermogelling hydrogel charge and lower critical solution temperature influence cellular infiltration and tissue integration in an ex vivo cartilage explant model. J Biomed Mater Res A 2023; 111:15-34. [PMID: 36053984 DOI: 10.1002/jbm.a.37441] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 08/03/2022] [Accepted: 08/16/2022] [Indexed: 11/11/2022]
Abstract
Thermogelling hydrogels based on poly(N-isopropyl acrylamide) (p[NiPAAm]) and crosslinked with a peptide-bearing macromer poly(glycolic acid)-poly(ethylene glycol)-poly(glycolic acid)-di(but-2-yne-1,4-dithiol) (PdBT) were fabricated to assess the role of hydrogel charge and lower critical solution temperature (LCST) over time in influencing cellular infiltration and tissue integration in an ex vivo cartilage explant model over 21 days. The p(NiPAAm)-based thermogelling polymer was synthesized to possess 0, 5, and 10 mol% dimethyl-γ-butyrolactone acrylate (DBA) to raise the LCST over time as the lactone rings hydrolyzed. Further, three peptides were designed to impart charge into the hydrogels via conjugation to the PdBT crosslinker. The positively, neutrally, and negatively charged peptides K4 (+), zwitterionic K2E2 (0), and E4 (-), respectively, were conjugated to the modular PdBT crosslinker and the hydrogels were evaluated for their thermogelation behavior in vitro before injection into the cartilage explant models. Samples were collected at days 0 and 21, and tissue integration and cellular infiltration were assessed via mechanical pushout testing and histology. Negatively charged hydrogels whose LCST changed over time (10 mol% DBA) were demonstrated to promote the greatest tissue integration when compared to the positive and neutral gels of the same thermogelling polymer formulation due to increased transport and diffusion across the hydrogel-tissue interface. Indeed, the negatively charged thermogelling polymer groups containing 5 and 10 mol% DBA demonstrated cellular infiltration and cartilage-like matrix deposition via histology. This study demonstrates the important role that material physicochemical properties play in dictating cell and tissue behavior and can inform future cartilage tissue engineering strategies.
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Affiliation(s)
- Hannah A Pearce
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | | | | | - Katie J Hogan
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Emily Y Jiang
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Matthew L Bedell
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Adam M Navara
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Adam Farsheed
- Department of Bioengineering, Rice University, Houston, Texas, USA
- Depatment of Chemistry, Rice University, Houston, Texas, USA
| | - Yu Seon Kim
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Jason L Guo
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Jeffrey D Hartgerink
- Department of Bioengineering, Rice University, Houston, Texas, USA
- Depatment of Chemistry, Rice University, Houston, Texas, USA
| | | | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, Texas, USA
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Adjustable Thermo-Responsive, Cell-Adhesive Tissue Engineering Scaffolds for Cell Stimulation through Periodic Changes in Culture Temperature. Int J Mol Sci 2022; 24:ijms24010572. [PMID: 36614014 PMCID: PMC9820143 DOI: 10.3390/ijms24010572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/21/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022] Open
Abstract
A three-dimensional (3D) scaffold ideally provides hierarchical complexity and imitates the chemistry and mechanical properties of the natural cell environment. Here, we report on a stimuli-responsive photo-cross-linkable resin formulation for the fabrication of scaffolds by continuous digital light processing (cDLP), which allows for the mechano-stimulation of adherent cells. The resin comprises a network-forming trifunctional acrylate ester monomer (trimethylolpropane triacrylate, or TMPTA), N-isopropyl acrylamide (NiPAAm), cationic dimethylaminoethyl acrylate (DMAEA) for enhanced cell interaction, and 4-acryloyl morpholine (AMO) to adjust the phase transition temperature (Ttrans) of the equilibrium swollen cross-polymerized scaffold. With glycofurol as a biocompatible solvent, controlled three-dimensional structures were fabricated and the transition temperatures were adjusted by resin composition. The effects of the thermally induced mechano-stimulation were investigated with mouse fibroblasts (L929) and myoblasts (C2C12) on printed constructs. Periodic changes in the culture temperature stimulated the myoblast proliferation.
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Zou F, Xu J, Yuan L, Zhang Q, Jiang L. Recent progress on smart hydrogels for biomedicine and bioelectronics. BIOSURFACE AND BIOTRIBOLOGY 2022. [DOI: 10.1049/bsb2.12046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Fa Zou
- Key Laboratory of Fluid and Power Machinery of Ministry of Education School of Materials Science and Engineering Xihua University Chengdu China
| | - Jiefang Xu
- School of Literature, Journalism and Communication Xihua University Chengdu China
| | - Le Yuan
- Key Laboratory of Fluid and Power Machinery of Ministry of Education School of Materials Science and Engineering Xihua University Chengdu China
| | - Qinyong Zhang
- Key Laboratory of Advanced Technologies of Materials Ministry of Education School of Materials Science and Engineering Southwest Jiaotong University Chengdu Sichuan China
| | - Lili Jiang
- Key Laboratory of Fluid and Power Machinery of Ministry of Education School of Materials Science and Engineering Xihua University Chengdu China
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Pardeshi S, Damiri F, Zehravi M, Joshi R, Kapare H, Prajapati MK, Munot N, Berrada M, Giram PS, Rojekar S, Ali F, Rahman MH, Barai HR. Functional Thermoresponsive Hydrogel Molecule to Material Design for Biomedical Applications. Polymers (Basel) 2022; 14:polym14153126. [PMID: 35956641 PMCID: PMC9371082 DOI: 10.3390/polym14153126] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/18/2022] [Accepted: 07/22/2022] [Indexed: 02/04/2023] Open
Abstract
Temperature-induced, rapid changes in the viscosity and reproducible 3-D structure formation makes thermos-sensitive hydrogels an ideal delivery system to act as a cell scaffold or a drug reservoir. Moreover, the hydrogels’ minimum invasiveness, high biocompatibility, and facile elimination from the body have gathered a lot of attention from researchers. This review article attempts to present a complete picture of the exhaustive arena, including the synthesis, mechanism, and biomedical applications of thermosensitive hydrogels. A special section on intellectual property and marketed products tries to shed some light on the commercial potential of thermosensitive hydrogels.
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Affiliation(s)
- Sagar Pardeshi
- Department of Pharmaceutical Technology, University Institute of Chemical Technology, KBC North Maharashtra University, Jalgaon 425001, Maharashtra, India;
| | - Fouad Damiri
- Laboratory of Biomolecules and Organic Synthesis (BIOSYNTHO), Department of Chemistry, Faculty of Sciences Ben M’sick, University Hassan II of Casablanca, Casablanca 20000, Morocco; (F.D.); (M.B.)
| | - Mehrukh Zehravi
- Department of Clinical Pharmacy Girls Section, Prince Sattam Bin Abdul Aziz University Alkharj, Al-Kharj 11942, Saudi Arabia;
| | - Rohit Joshi
- Precision Nanosystems Inc., Vancouver, BC V6P 6T7, Canada;
| | - Harshad Kapare
- Department of Pharmaceutics, Dr. D.Y. Patil Institute of Pharmaceutical Sciences and Research, Pune 41118, Maharashtra, India;
| | - Mahendra Kumar Prajapati
- Department of Pharmaceutics, School of Pharmacy and Technology Management, SVKM’s NMIMS, Shirpur 425405, Maharashtra, India;
| | - Neha Munot
- Department of Pharmaceutics, School of Pharmacy, Vishwakarma University, Pune 411048, Maharashtra, India;
| | - Mohammed Berrada
- Laboratory of Biomolecules and Organic Synthesis (BIOSYNTHO), Department of Chemistry, Faculty of Sciences Ben M’sick, University Hassan II of Casablanca, Casablanca 20000, Morocco; (F.D.); (M.B.)
| | - Prabhanjan S. Giram
- Department of Pharmaceutics, Dr. D.Y. Patil Institute of Pharmaceutical Sciences and Research, Pune 41118, Maharashtra, India;
- Department of Pharmaceutical Sciences, University at Buffalo, The State University of New York, Buffalo, NY 14214, USA
- Correspondence: (P.S.G.); (S.R.); (H.R.B.)
| | - Satish Rojekar
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai 400019, Maharashtra, India
- Departments of Medicine and Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Correspondence: (P.S.G.); (S.R.); (H.R.B.)
| | - Faraat Ali
- Laboratory Services, Department of Licensing and Enforcement, Botswana Medicines Regulatory Authority (BoMRA), Gaborone 999106, Botswana;
| | - Md. Habibur Rahman
- Department of Global Medical Science, Wonju College of Medicine, Yonsei University, Wonju 26426, Korea;
| | - Hasi Rani Barai
- School of Mechanical and IT Engineering, Yeungnam University, Gyeongsan 38541, Korea
- Correspondence: (P.S.G.); (S.R.); (H.R.B.)
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Vieira S, Silva-Correia J, Reis RL, Oliveira JM. Engineering Hydrogels for Modulation of Material-Cell Interactions. Macromol Biosci 2022; 22:e2200091. [PMID: 35853666 DOI: 10.1002/mabi.202200091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/29/2022] [Indexed: 11/06/2022]
Abstract
Hydrogels are a recurrent platform for Tissue Engineering (TE) strategies. Their versatility and the variety of available methods for tuning their properties highly contribute to hydrogels' success. As a result, the design of advanced hydrogels has been thoroughly studied, in the quest for better solutions not only for drugs- and cell-based therapies but also for more fundamental studies. The wide variety of sources, crosslinking strategies, and functionalization methods, and mostly the resemblance of hydrogels to the natural extracellular matrix, make this 3D hydrated structures an excellent tool for TE approaches. The state-of-the-art information regarding hydrogel design, processing methods, and the influence of different hydrogel formulations on the final cell-biomaterial interactions are overviewed herein. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Sílvia Vieira
- 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, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Joana Silva-Correia
- 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, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - 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, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - J Miguel Oliveira
- 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, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
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7
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Sharma A, Mittal P, Yadav A, Mishra AK, Hazari PP, Sharma RK. Sustained Activity of Stimuli-Responsive Curcumin and Acemannan Based Hydrogel Patches in Wound Healing. ACS APPLIED BIO MATERIALS 2022; 5:598-609. [PMID: 35089010 DOI: 10.1021/acsabm.1c01078] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Natural plant extract, namely acemannan (Ac) and curcumin (Cur), coencapsulated pluronic micelles, showing thermoresponsive properties, were designed for efficient and safe in vivo wound healing applications. Ac and Cur, widely used antimicrobials, find limited applications because of their low stability, short biological half-life, poor solubility, and low bioavailability. Herein, we report the extraction of Ac from aloe vera and coencapsulation of it with Cur in pluronic micelles to take advantage of the combined effects of both components. Both Ac and Cur preserved their bioactive functionality upon encapsulation. Single photon emission computed tomography imaging confirmed that NPAcC2 hydrogel masked the whole wound by forming a layer. Cur and Ac synergistically resulted in rapid wound closure on the seventh day, and full-grown hair was observed on the 10th day. Individually they both take more than 20 days for wound closure. The increase in the concentration of curcumin increases the healing properties of the material. For days 1, 6, and 10 of the wound dressing experiment, the percentages of wound closure of the mice were the highest for NPAcC2 (i.e., 100%) compared to the untreated control (25%) while maintaining the integrity of the skin. These natural product-based hydrogels have limited side effects vs those caused by commercial drugs in wound healing.
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Affiliation(s)
- Anu Sharma
- Nanotechnology and Drug Delivery Research Group, Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Parul Mittal
- Division of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Delhi-110054, India
| | - Anita Yadav
- Nanotechnology and Drug Delivery Research Group, Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Anil K Mishra
- Division of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Delhi-110054, India
| | - Puja Panwar Hazari
- Division of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Delhi-110054, India
| | - Rakesh Kumar Sharma
- Nanotechnology and Drug Delivery Research Group, Department of Chemistry, University of Delhi, Delhi-110007, India
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8
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Pearce HA, Jiang EY, Swain JWR, Navara AM, Guo JL, Kim YS, Woehr A, Hartgerink JD, Mikos AG. Evaluating the physicochemical effects of conjugating peptides into thermogelling hydrogels for regenerative biomaterials applications. Regen Biomater 2021; 8:rbab073. [PMID: 34934509 PMCID: PMC8684499 DOI: 10.1093/rb/rbab073] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/14/2021] [Accepted: 11/22/2021] [Indexed: 12/18/2022] Open
Abstract
Thermogelling hydrogels, such as poly(N-isopropylacrylamide) [P(NiPAAm)], provide tunable constructs leveraged in many regenerative biomaterial applications. Recently, our lab developed the crosslinker poly(glycolic acid)-poly(ethylene glycol)-poly(glycolic acid)-di(but-2-yne-1,4-dithiol), which crosslinks P(NiPAAm-co-glycidyl methacrylate) via thiol-epoxy reaction and can be functionalized with azide-terminated peptides via alkyne-azide click chemistry. This study's aim was to evaluate the impact of peptides on the physicochemical properties of the hydrogels. The physicochemical properties of the hydrogels including the lower critical solution temperature, crosslinking times, swelling, degradation, peptide release and cytocompatibility were evaluated. The gels bearing peptides increased equilibrium swelling indicating hydrophilicity of the hydrogel components. Comparable sol fractions were found for all groups, indicating that inclusion of peptides does not impact crosslinking. Moreover, the inclusion of a matrix metalloproteinase-sensitive peptide allowed elucidation of whether release of peptides from the network was driven by hydrolysis or enzymatic cleavage. The hydrophilicity of the network determined by the swelling behavior was demonstrated to be the most important factor in dictating hydrogel behavior over time. This study demonstrates the importance of characterizing the impact of additives on the physicochemical properties of hydrogels. These characteristics are key in determining design considerations for future in vitro and in vivo studies for tissue regeneration.
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Affiliation(s)
- Hannah A Pearce
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Emily Y Jiang
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Joseph W R Swain
- Depatment of Chemistry, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Adam M Navara
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Jason L Guo
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Yu Seon Kim
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Andrew Woehr
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Jeffrey D Hartgerink
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
- Depatment of Chemistry, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
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Khiabani SS, Aghazadeh M, Rakhtshah J, Davaran S. A review of hydrogel systems based on poly(N-isopropyl acrylamide) for use in the engineering of bone tissues. Colloids Surf B Biointerfaces 2021; 208:112035. [PMID: 34455315 DOI: 10.1016/j.colsurfb.2021.112035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 05/24/2021] [Accepted: 08/12/2021] [Indexed: 10/20/2022]
Abstract
Bone fracture is usually a medical condition where occurred by high force impact or stress. Recent advances to repair damaged or diseased bone tissues employs three-dimensional (3D) polymer matrices. This review aims to investigate the potential of injectable, dual thermally, and chemically gelable N-isopropyl acrylamide-based hydrogels to deliver scaffold, cells, and growth factors in vitro and in vivo.
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Affiliation(s)
| | - Marziyeh Aghazadeh
- Oral Medicine Department of Dental Faculty, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jamshid Rakhtshah
- Department of Medical Nanotechnology, Faculty of Advanced Medical Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soodabeh Davaran
- Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Health Innovation Acceleration Center of Tabriz University of Medical Science and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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10
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Chopra H, Singh I, Kumar S, Bhattacharya T, Rahman MH, Akter R, Kabir MT. Comprehensive Review on Hydrogels. Curr Drug Deliv 2021; 19:658-675. [PMID: 34077344 DOI: 10.2174/1567201818666210601155558] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/26/2021] [Accepted: 04/05/2021] [Indexed: 11/22/2022]
Abstract
The conventional drug delivery systems have a long list of issues of repeated dosing and toxicity arising due to it. The hydrogels are the answer to them and offer a result that minimizes such activities and optimizes therapeutic benefits. The hydrogels proffer tunable properties that can withstand degradation, metabolism, and controlled release moieties. Some of the areas of applications of hydrogels involve wound healing, ocular systems, vaginal gels, scaffolds for tissue, bone engineering, etc. They consist of about 90% of the water that makes them suitable bio-mimic moiety. Here, we present a birds-eye view of various perspectives of hydrogels, along with their applications.
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Affiliation(s)
- Hitesh Chopra
- Department of Pharmaceutics, Chitkara College of Pharmacy, Chitkara University, Rajpura-140401, Patiala, Punjab, India
| | - Inderbir Singh
- Department of Pharmaceutics, Chitkara College of Pharmacy, Chitkara University, Rajpura-140401, Patiala, Punjab, India
| | - Sandeep Kumar
- Department of Pharmaceutics, ASBASJSM College of Pharmacy, Bela-140111, Ropar, Punjab, India
| | | | - Md Habibur Rahman
- Department of Pharmacy, Jagannath University, Sadarghat, Dhaka-1100. Bangladesh
| | - Rokeya Akter
- Department of Pharmacy, Southeast University, Banani, Dhaka-1213. Bangladesh
| | - Md Tanvir Kabir
- Department of Pharmacy, Brac University, 66 Mohakhali, Dhaka 1212. Bangladesh
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11
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Assessment of the embolization effect of temperature-sensitive p(N-isopropylacrylamide-co-butyl methylacrylate) nanogels in the rabbit renal artery by CT perfusion and confirmed by macroscopic examination. Sci Rep 2021; 11:4826. [PMID: 33649484 PMCID: PMC7921428 DOI: 10.1038/s41598-021-84372-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/15/2021] [Indexed: 11/29/2022] Open
Abstract
Transcatheter embolization is an important treatment method in clinical therapy, and vascular embolization material plays a key role in embolization. The temperature-sensitive p(N-isopropylacrylamide-co-butyl methylacrylate) (PIB) nanogel is a novel embolic agent. To evaluate the feasibility of the nanogel as a blood vessel embolization agent, we aimed to assess the effect of embolization with PIB nanogels in the rabbit renal artery by non-invasive computed tomography (CT) perfusion, macroscopic and histological examination. Ten healthy adult Japanese rabbits were used to implement RAE of PIB nanogels in their right kidneys. CT perfusion scans were performed pre- and post-treatment at various time-points (1, 4, 8, and 12 weeks). Two rabbits were euthanized and histologically examined at each time-point, and the remaining rabbits were euthanized at 12 weeks after embolization. The RAE efficacy of the nanogels was further confirmed by macroscopic and histological examination. The renal volume and renal blood flow (BF) of the right kidney were significantly decreased post-treatment compared with those pre-treatment (volume: pre, 9278 ± 1736 mm3; post 1 week, 5155 ± 979 mm3, P < 0.0001; post 4 weeks, 3952 ± 846 mm3, P < 0.0001; post 8 weeks, 3226 ± 556 mm3, P < 0.0001; post 12 weeks, 2064 ± 507 mm3, P < 0.0001. BF: pre, 530.81 ± 51.50 ml/min/100 ml; post 1 week, 0 ml/min/100 ml, P < 0.0001; post 4 weeks, 0 ml/min/100 ml, P < 0.0001; post 8 weeks, 0 ml/min/100 ml, P < 0.0001; post 12 weeks, 0 ml/min/100 ml, P < 0.0001). No revascularization or collateral circulation was observed on histological examination during this period, and PIB nanogels were dispersed in all levels of the renal arteries. Twelve weeks after embolization, CT perfusion showed no BF in the right renal artery and renal tissue, a finding that was consistent with histological examination showing complete embolization of the right renal artery with a lack of formation of collateral vessels. The effect of embolization on PIB was adequate, with good dispersion and permanency, and could be evaluated by non-invasive and quantitative CT perfusion.
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12
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Amler AK, Thomas A, Tüzüner S, Lam T, Geiger MA, Kreuder AE, Palmer C, Nahles S, Lauster R, Kloke L. 3D bioprinting of tissue-specific osteoblasts and endothelial cells to model the human jawbone. Sci Rep 2021; 11:4876. [PMID: 33649412 PMCID: PMC7921109 DOI: 10.1038/s41598-021-84483-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 02/15/2021] [Indexed: 02/06/2023] Open
Abstract
Jawbone differs from other bones in many aspects, including its developmental origin and the occurrence of jawbone-specific diseases like MRONJ (medication-related osteonecrosis of the jaw). Although there is a strong need, adequate in vitro models of this unique environment are sparse to date. While previous approaches are reliant e.g. on scaffolds or spheroid culture, 3D bioprinting enables free-form fabrication of complex living tissue structures. In the present work, production of human jawbone models was realised via projection-based stereolithography. Constructs were bioprinted containing primary jawbone-derived osteoblasts and vasculature-like channel structures optionally harbouring primary endothelial cells. After 28 days of cultivation in growth medium or osteogenic medium, expression of cell type-specific markers was confirmed on both the RNA and protein level, while prints maintained their overall structure. Survival of endothelial cells in the printed channels, co-cultured with osteoblasts in medium without supplementation of endothelial growth factors, was demonstrated. Constructs showed not only mineralisation, being one of the characteristics of osteoblasts, but also hinted at differentiation to an osteocyte phenotype. These results indicate the successful biofabrication of an in vitro model of the human jawbone, which presents key features of this special bone entity and hence appears promising for application in jawbone-specific research.
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Affiliation(s)
- Anna-Klara Amler
- Cellbricks GmbH, Gustav-Meyer-Allee 25, 13355, Berlin, Germany. .,Department of Medical Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany.
| | - Alexander Thomas
- Cellbricks GmbH, Gustav-Meyer-Allee 25, 13355, Berlin, Germany.,Department of Medical Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
| | - Selin Tüzüner
- Cellbricks GmbH, Gustav-Meyer-Allee 25, 13355, Berlin, Germany.,Department of Medical Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
| | - Tobias Lam
- Cellbricks GmbH, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
| | | | - Anna-Elisabeth Kreuder
- Cellbricks GmbH, Gustav-Meyer-Allee 25, 13355, Berlin, Germany.,Department of Medical Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
| | - Chris Palmer
- Cellbricks GmbH, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
| | - Susanne Nahles
- Department of Oral- and Maxillofacial Surgery, Charité Campus Virchow, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Roland Lauster
- Department of Medical Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
| | - Lutz Kloke
- Cellbricks GmbH, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
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13
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Hogan KJ, Mikos AG. Biodegradable thermoresponsive polymers: Applications in drug delivery and tissue engineering. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123063] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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14
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Motor and sensitive recovery after injection of a physically cross-linked PNIPAAm-g-PEG hydrogel in rat hemisectioned spinal cord. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 107:110354. [DOI: 10.1016/j.msec.2019.110354] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 10/02/2019] [Accepted: 10/20/2019] [Indexed: 12/28/2022]
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15
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Chatterjee S, Chi-Leung Hui P. Review of Stimuli-Responsive Polymers in Drug Delivery and Textile Application. Molecules 2019; 24:E2547. [PMID: 31336916 PMCID: PMC6681499 DOI: 10.3390/molecules24142547] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 06/27/2019] [Accepted: 07/11/2019] [Indexed: 12/22/2022] Open
Abstract
This review describes some commercially available stimuli-responsive polymers of natural and synthetic origin, and their applications in drug delivery and textiles. The polymers of natural origin such as chitosan, cellulose, albumin, and gelatin are found to show both thermo-responsive and pH-responsive properties and these features of the biopolymers impart sensitivity to act differently under different temperatures and pH conditions. The stimuli-responsive characters of these natural polymers have been discussed in the review, and their respective applications in drug delivery and textile especially for textile-based transdermal therapy have been emphasized. Some practically important thermo-responsive polymers such as pluronic F127 (PF127) and poly(N-isopropylacrylamide) (pNIPAAm) of synthetic origin have been discussed in the review and they are of great importance commercially because of their in situ gel formation capacity. Some pH-responsive synthetic polymers have been discussed depending on their surface charge, and their drug delivery and textile applications have been discussed in this review. The selected stimuli-responsive polymers of synthetic origin are commercially available. Above all, the applications of bio-based or synthetic stimuli-responsive polymers in textile-based transdermal therapy are given special regard apart from their general drug delivery applications. A special insight has been given for stimuli-responsive hydrogel drug delivery systems for textile-based transdermal therapy, which is critical for the treatment of skin disease atopic dermatitis.
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Affiliation(s)
- Sudipta Chatterjee
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Patrick Chi-Leung Hui
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong.
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16
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Ávila-Salas F, Durán-Lara EF. An Overview of Injectable Thermo-Responsive Hydrogels and Advances in their Biomedical Applications. Curr Med Chem 2019; 27:5773-5789. [PMID: 31161984 DOI: 10.2174/0929867325666190603110045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/14/2019] [Accepted: 04/19/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Injectable hydrogels are a thermo-responsive system based on biomaterials. Injectable hydrogels have been broadly investigated mainly as vehicles or scaffolds of therapeutic agents that include drugs, proteins, cells, and bioactive molecules among others, utilized in the treatment of diseases such as cancers and the repair and regeneration of tissues. RESULTS There are several studies that have described the multiple features of hydrogels. However, the main aspect that breaks the paradigm in the application of hydrogels is the thermoresponsiveness that some of them have, which is an abrupt modification in their properties in response to small variations in temperature. For that reason, the thermo-responsive hydrogels with the unique property of sol-gel transition have received special attention over the past decades. These hydrogels show phase transition near physiological human body temperature. This feature is key for being applied in promising areas of human health-related research. CONCLUSION The purpose of this study is the overview of injectable hydrogels and their latest advances in medical applications including bioactive compound delivery, tissue engineering, and regenerative medicine.
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Affiliation(s)
- Fabián Ávila-Salas
- Centro de Nanotecnología Aplicada (CNAP), Facultad de Ciencias, Universidad Mayor, Huechuraba 8580000, Chile
| | - Esteban F Durán-Lara
- Bio & NanoMaterials Lab, Drug Delivery and Controlled Release, Universidad de Talca, Talca 3460000, Maule, Chile.,Departamento de Microbiologia, Facultad de Ciencias de la Salud, Universidad de Talca, Talca 3460000, Maule, Chile
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17
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Dhillon J, Young SA, Sherman SE, Bell GI, Amsden BG, Hess DA, Flynn LE. Peptide-modified methacrylated glycol chitosan hydrogels as a cell-viability supporting pro-angiogenic cell delivery platform for human adipose-derived stem/stromal cells. J Biomed Mater Res A 2018; 107:571-585. [PMID: 30390406 DOI: 10.1002/jbm.a.36573] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/26/2018] [Accepted: 10/27/2018] [Indexed: 12/18/2022]
Abstract
Cell-based therapies involving the injection of adipose-derived stem/stromal cells (ASCs) within rationally designed biomaterials are a promising approach for stimulating angiogenesis. With this focus, the current work explored the effects of incorporating integrin-binding RGD or IKVAV peptides within in situ-gelling N-methacrylate glycol chitosan (MGC) hydrogels on the response of encapsulated human ASCs. Initial studies focused on hydrogel characterization to validate that the MGC, MGC-RGD, and MGC-IKVAV hydrogels had similar biomechanical properties. ASC viability following encapsulation and culture under 2% O2 was significantly impaired in the MGC-IKVAV group relative to the MGC and MGC-RGD groups. In contrast, sustained viability, along with enhanced cell spreading and metabolic activity were observed in the MGC-RGD group. Investigation of angiogenic transcription suggested that the incorporation of the peptide groups did not substantially alter the pro-angiogenic gene expression profile of the encapsulated ASCs after 7 days of culture under 2% O2. Consistent with the in vitro findings, preliminary in vivo characterization following subcutaneous implantation into NOD/SCID mice showed that ASC retention was enhanced in the MGC-RGD hydrogels relative to the MGC-IKVAV group at 14 days. Further, the encapsulated ASCs in the MGC and MGC-RGD groups promoted murine CD31+ endothelial cell recruitment to the peri-implant region. Overall, the results indicate that the MGC-RGD and MGC hydrogels are promising platforms for ASC delivery, and suggest that strategies that support long-term ASC viability can augment in vivo angiogenesis through paracrine mechanisms. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 571-585, 2019.
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Affiliation(s)
- Jobanpreet Dhillon
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, N6A 3K7, Canada.,Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, N6A 5B7, Canada
| | - Stuart A Young
- Department of Chemical Engineering, Queen's University, Kingston, Ontario, K7L 3N6, Canada.,Human Mobility Research Centre, Queen's University, Kingston, Ontario, K7L 3N6, Canada
| | - Stephen E Sherman
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, N6A 5B7, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, Canada
| | - Gillian I Bell
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, N6A 5B7, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, Canada
| | - Brian G Amsden
- Department of Chemical Engineering, Queen's University, Kingston, Ontario, K7L 3N6, Canada.,Human Mobility Research Centre, Queen's University, Kingston, Ontario, K7L 3N6, Canada
| | - David A Hess
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, N6A 5B7, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, Canada
| | - Lauren E Flynn
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, N6A 3K7, Canada.,Department of Chemical and Biochemical Engineering, Thompson Engineering Building, The University of Western Ontario, London, Ontario, N6A 5B9, Canada
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18
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Wang X, Young DJ, Wu YL, Loh XJ. Thermogelling 3D Systems towards Stem Cell-Based Tissue Regeneration Therapies. Molecules 2018; 23:E553. [PMID: 29498651 PMCID: PMC6017244 DOI: 10.3390/molecules23030553] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/25/2018] [Accepted: 02/26/2018] [Indexed: 02/08/2023] Open
Abstract
Stem cell culturing and differentiation is a very important research direction for tissue engineering. Thermogels are well suited for encapsulating cells because of their non-biotoxic nature and mild sol-gel transition as temperature increases. In particular, thermogels provide a 3D growth environment for stem cell growth, which is more similar to the extracellular matrix than flat substrates, so thermogels as a medium can overcome many of the cell abnormalities caused by 2D cell growth. In this review, we summarize the applications of thermogels in cell and stem cell culture in recent years. We also elaborate on the methods to induce stem cell differentiation by using thermogel-based 3D scaffolds. In particular, thermogels, encapsulating specific differentiation-inducing factor and having specific structures and moduli, can induce the differentiation into the desired tissue cells. Three dimensional thermogel scaffolds that control the growth and differentiation of cells will undoubtedly have a bright future in regenerative medicine.
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Affiliation(s)
- Xiaoyuan Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
| | - David James Young
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore 4558, Queensland, Australia.
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
| | - Xian Jun Loh
- A*STAR (Agency for Science, Technology and Research), Institute of Materials Science and Engineering, 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634, Singapore.
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19
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Young SA, Sherman SE, Cooper TT, Brown C, Anjum F, Hess DA, Flynn LE, Amsden BG. Mechanically resilient injectable scaffolds for intramuscular stem cell delivery and cytokine release. Biomaterials 2018; 159:146-160. [PMID: 29324306 DOI: 10.1016/j.biomaterials.2018.01.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 11/24/2017] [Accepted: 01/03/2018] [Indexed: 12/17/2022]
Abstract
A promising strategy for treating peripheral ischemia involves the delivery of stem cells to promote angiogenesis through paracrine signaling. Treatment success depends on cell localization, retention, and survival within the mechanically dynamic intramuscular (IM) environment. Herein we describe an injectable, in situ-gelling hydrogel for the IM delivery of adipose-derived stem/stromal cells (ASCs), specifically designed to withstand the dynamic loading conditions of the lower limb and facilitate cytokine release from encapsulated cells. Copolymers of poly(trimethylene carbonate)-b-poly(ethylene glycol)-b-poly(trimethylene carbonate) diacrylate were used to modulate the properties of methacrylated glycol chitosan hydrogels crosslinked by thermally-initiated polymerization using ammonium persulfate and N,N,N',N'-tetramethylethylenediamine. The scaffolds had an ultimate compressive strain over 75% and maintained mechanical properties during compressive fatigue testing at physiological levels. Rapid crosslinking (<3 min) was achieved at low initiator concentration (5 mM). Following injection and crosslinking within the scaffolds, human ASCs demonstrated high viability (>90%) over two weeks in culture under both normoxia and hypoxia. Release of angiogenic and chemotactic cytokines was enhanced from encapsulated cells under sustained hypoxia, in comparison to normoxic and tissue culture polystyrene controls. When delivered by IM injection in a mouse model of hindlimb ischemia, human ASCs were well retained in the scaffold over 28 days and significantly increased the IM vascular density compared to untreated controls.
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Affiliation(s)
- Stuart A Young
- Department of Chemical Engineering, Queen's University, Kingston, Ontario, K7L 3N6, Canada; Human Mobility Research Centre, Queen's University, Kingston, Ontario, K7L 3N6, Canada
| | - Stephen E Sherman
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, Canada; Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, Canada
| | - Tyler T Cooper
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, Canada; Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, Canada
| | - Cody Brown
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, N6A 3K7, Canada
| | - Fraz Anjum
- Pharmaceutical Production Research Facility, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - David A Hess
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, Canada; Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, Canada
| | - Lauren E Flynn
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, N6A 3K7, Canada; Department of Chemical and Biochemical Engineering, Thompson Engineering Building, The University of Western Ontario, London, Ontario, N6A 5B9, Canada.
| | - Brian G Amsden
- Department of Chemical Engineering, Queen's University, Kingston, Ontario, K7L 3N6, Canada; Human Mobility Research Centre, Queen's University, Kingston, Ontario, K7L 3N6, Canada.
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20
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Vo TN, Tabata Y, Mikos AG. Effects of cellular parameters on the in vitro osteogenic potential of dual-gelling mesenchymal stem cell-laden hydrogels. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 27:1277-90. [PMID: 27328947 DOI: 10.1080/09205063.2016.1195157] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
This work investigated the effects of cellular encapsulation density and differentiation stage on the osteogenic capacity of injectable, dual physically and chemically gelling hydrogels comprised of thermogelling macromers and polyamidoamine crosslinkers. Undifferentiated and osteogenically predifferentiated mesenchymal stem cells (MSCs) were encapsulated within 20 wt% composite hydrogels with gelatin microparticles at densities of six or 15 million cells/mL. We hypothesized that a high encapsulation density and predifferentiation would promote increased cellular interaction and accelerate osteogenesis, leading to enhanced osteogenic potential in vitro. Hydrogels were able to maintain the viability of the encapsulated cells over a period of 28 days, with the high encapsulation density and predifferentiation group possessing the highest DNA content at all time points. Early alkaline phosphatase activity and mineralization were promoted by encapsulation density, whereas this effect by predifferentiation was only observed in the low seeding density groups. Both parameters only demonstrated short-lived effects when examined independently, but jointly led to greater levels of alkaline phosphatase activity and mineralization. The combined effects suggest that there may be optimal encapsulation densities and differentiation periods that need to be investigated to improve MSCs for biomaterial-based therapeutics in bone tissue engineering.
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Affiliation(s)
- Tiffany N Vo
- a Department of Bioengineering , Rice University , Houston , TX , USA
| | - Yasuhiko Tabata
- b Department of Biomaterials , Institute for Frontier Medical Sciences, Kyoto University , Kyoto , Japan
| | - Antonios G Mikos
- a Department of Bioengineering , Rice University , Houston , TX , USA.,c Department of Chemical and Biomolecular Engineering , Rice University , Houston , TX , USA
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21
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Liu M, Zeng X, Ma C, Yi H, Ali Z, Mou X, Li S, Deng Y, He N. Injectable hydrogels for cartilage and bone tissue engineering. Bone Res 2017; 5:17014. [PMID: 28584674 PMCID: PMC5448314 DOI: 10.1038/boneres.2017.14] [Citation(s) in RCA: 643] [Impact Index Per Article: 91.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 01/08/2017] [Accepted: 01/10/2017] [Indexed: 12/17/2022] Open
Abstract
Tissue engineering has become a promising strategy for repairing damaged cartilage and bone tissue. Among the scaffolds for tissue-engineering applications, injectable hydrogels have demonstrated great potential for use as three-dimensional cell culture scaffolds in cartilage and bone tissue engineering, owing to their high water content, similarity to the natural extracellular matrix (ECM), porous framework for cell transplantation and proliferation, minimal invasive properties, and ability to match irregular defects. In this review, we describe the selection of appropriate biomaterials and fabrication methods to prepare novel injectable hydrogels for cartilage and bone tissue engineering. In addition, the biology of cartilage and the bony ECM is also summarized. Finally, future perspectives for injectable hydrogels in cartilage and bone tissue engineering are discussed.
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Affiliation(s)
- Mei Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, PR China
| | - Xin Zeng
- Nanjing Maternity and Child Health Care Hospital, Nanjing, PR China
| | - Chao Ma
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, PR China
| | - Huan Yi
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, PR China
| | - Zeeshan Ali
- School of Applied Chemistry and Biotechnology, Shenzhen Polytechnic, Shenzhen, PR China
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, PR China
| | - Xianbo Mou
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, PR China
| | - Song Li
- Hunan Key Laboratory of Green Chemistry and Application of Biological Nanotechnology, Hunan University of Technology, Zhuzhou, PR China
| | - Yan Deng
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, PR China
- Hunan Key Laboratory of Green Chemistry and Application of Biological Nanotechnology, Hunan University of Technology, Zhuzhou, PR China
| | - Nongyue He
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, PR China
- Hunan Key Laboratory of Green Chemistry and Application of Biological Nanotechnology, Hunan University of Technology, Zhuzhou, PR China
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22
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Pehlivaner Kara MO, Ekenseair AK. Free Epoxide Content Mediates Encapsulated Cell Viability and Activity through Protein Interactions in a Thermoresponsive, In Situ Forming Hydrogel. Biomacromolecules 2017; 18:1473-1481. [PMID: 28391683 DOI: 10.1021/acs.biomac.6b01898] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of synthetic and well-defined extracellular matrices that are free of xenogeneic components and are capable of inducing desired cellular responses holds great potential for use in vitro as 3D cell culture environments and in vivo as scaffolds for tissue regeneration. In this study, the impact of free and partially occupied epoxide groups on the viability, activity, and behavior of rat fibroblasts encapsulated in thermoresponsive hydrogels based on poly(N-isopropylacrylamide) (pNiPAAm) was investigated. While fibroblasts encapsulated in neat pNiPAAm remained rounded and showed significant toxicity by 5 days, those encapsulated in the epoxide-modified thermogels demonstrated not only high viability but also an ability to proliferate, attach, produce extracellular matrix (ECM) components, and cluster. The results demonstrated that the presence of free epoxide groups led to the local conjugation of available proteins to produce a modified structure in situ, which supported cell viability, activity, and cluster formation within the hydrogel.
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Affiliation(s)
- Meryem O Pehlivaner Kara
- Department of Chemical Engineering, Northeastern University , 360 Huntington Avenue, 313 SN, Boston, Massachusetts 02115, United States
| | - Adam K Ekenseair
- Department of Chemical Engineering, Northeastern University , 360 Huntington Avenue, 313 SN, Boston, Massachusetts 02115, United States
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23
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Kascholke C, Loth T, Kohn-Polster C, Möller S, Bellstedt P, Schulz-Siegmund M, Schnabelrauch M, Hacker MC. Dual-Functional Hydrazide-Reactive and Anhydride-Containing Oligomeric Hydrogel Building Blocks. Biomacromolecules 2017; 18:683-694. [PMID: 28125209 DOI: 10.1021/acs.biomac.6b01355] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Biomimetic hydrogels are advanced biomaterials that have been developed following different synthetic routes. Covalent postfabrication functionalization is a promising strategy to achieve efficient matrix modification decoupled of general material properties. To this end, dual-functional macromers were synthesized by free radical polymerization of maleic anhydride with diacetone acrylamide (N-(1,1-dimethyl-3-oxobutyl)acrylamide) and pentaerythritol diacrylate monostearate. Amphiphilic oligomers (Mn < 7.5 kDa) with anhydride contents of 7-20% offered cross-linking reactivity to yield rigid hydrogels with gelatinous peptides (E = 4-13 kPa) and good cell adhesion properties. Mildly reactive methyl ketones as second functionality remained intact during hydrogel formation and potential of covalent matrix modification was shown using hydrazide and hydrazine model compounds. Successful secondary dihydrazide cross-linking was demonstrated by an increase of hydrogel stiffness (>40%). Efficient hydrazide/hydrazine immobilization depending on solution pH, hydrogel ketone content as well as ligand concentration for bioconjugation was shown and reversibility of hydrazone formation was indicated by physiologically relevant hydrazide release over 7 days. Proof-of-concept experiments with hydrazido-functionalized hyaluronan demonstrated potential for covalent aECM immobilization. The presented dual-functional macromers have perspective as reactive hydrogel building blocks for various biomedical applications.
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Affiliation(s)
- Christian Kascholke
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University , Eilenburger Straße 15 a, 04317 Leipzig, Germany.,Collaborative Research Center (SFB/Transregio 67), Matrixengineering, Leipzig and Dresden, Germany
| | - Tina Loth
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University , Eilenburger Straße 15 a, 04317 Leipzig, Germany.,Collaborative Research Center (SFB/Transregio 67), Matrixengineering, Leipzig and Dresden, Germany
| | - Caroline Kohn-Polster
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University , Eilenburger Straße 15 a, 04317 Leipzig, Germany.,Collaborative Research Center (SFB/Transregio 67), Matrixengineering, Leipzig and Dresden, Germany
| | - Stephanie Möller
- Biomaterials Department, INNOVENT e.V. , Prüssingstraße 27 b, 07745 Jena, Germany.,Collaborative Research Center (SFB/Transregio 67), Matrixengineering, Leipzig and Dresden, Germany
| | - Peter Bellstedt
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich-Schiller University Jena , Humboldtstraße 10, 07743 Jena, Germany
| | - Michaela Schulz-Siegmund
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University , Eilenburger Straße 15 a, 04317 Leipzig, Germany.,Collaborative Research Center (SFB/Transregio 67), Matrixengineering, Leipzig and Dresden, Germany
| | - Matthias Schnabelrauch
- Biomaterials Department, INNOVENT e.V. , Prüssingstraße 27 b, 07745 Jena, Germany.,Collaborative Research Center (SFB/Transregio 67), Matrixengineering, Leipzig and Dresden, Germany
| | - Michael C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University , Eilenburger Straße 15 a, 04317 Leipzig, Germany.,Collaborative Research Center (SFB/Transregio 67), Matrixengineering, Leipzig and Dresden, Germany
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24
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Anjum F, Carroll A, Young SA, Flynn LE, Amsden BG. Tough, Semisynthetic Hydrogels for Adipose Derived Stem Cell Delivery for Chondral Defect Repair. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201600373] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 12/05/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Fraz Anjum
- Department of Chemical Engineering; Queen's University Kingston; ON K7L3N6 Canada
- Human Mobility Research Centre; Queen's University Kingston; ON K7L3N6 Canada
| | - Andrew Carroll
- Department of Chemical Engineering; Queen's University Kingston; ON K7L3N6 Canada
- Human Mobility Research Centre; Queen's University Kingston; ON K7L3N6 Canada
| | - Stuart A. Young
- Department of Chemical Engineering; Queen's University Kingston; ON K7L3N6 Canada
- Human Mobility Research Centre; Queen's University Kingston; ON K7L3N6 Canada
| | - Lauren E. Flynn
- Department of Chemical and Biochemical Engineering; The University of Western Ontario; London ON N6A 3K7 Canada
- Department of Anatomy and Cell Biology; The University of Western Ontario; London ON N6A 3K7 Canada
| | - Brian G. Amsden
- Department of Chemical Engineering; Queen's University Kingston; ON K7L3N6 Canada
- Human Mobility Research Centre; Queen's University Kingston; ON K7L3N6 Canada
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25
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Acellular mineral deposition within injectable, dual-gelling hydrogels for bone tissue engineering. J Biomed Mater Res A 2016; 105:110-117. [DOI: 10.1002/jbm.a.35875] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 06/06/2016] [Accepted: 08/22/2016] [Indexed: 11/07/2022]
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26
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Sülflow K, Schneider M, Loth T, Kascholke C, Schulz-Siegmund M, Hacker MC, Simon JC, Savkovic V. Melanocytes from the outer root sheath of human hair and epidermal melanocytes display improved melanotic features in the niche provided by cGEL, oligomer-cross-linked gelatin-based hydrogel. J Biomed Mater Res A 2016; 104:3115-3126. [PMID: 27409726 DOI: 10.1002/jbm.a.35832] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/05/2016] [Accepted: 07/11/2016] [Indexed: 12/15/2022]
Abstract
Non-invasively based cell treatments of depigmented skin disorders are largely limited by means of cell sampling as much as by their routes of application. Human melanocytes cultivated from the outer root sheath of hair follicle (HUMORS) are among the cell types that fit the non-invasive concept by being cultivated out of a minimal sample: hair root. Eventual implementation of HUMORS as a graft essentially depends on a choice of suitable biocompatible, biodegradable carrier that would mechanically and biologically support the cells as transient niche and facilitate their engraftment. Hence, the melanotic features of follicle-derived HUMORS and normal human epidermal melanocytes (NHEM) in engineered scaffolds based on collagen, the usual leading candidate for graft material for a variety of skin transplantation procedures were tested. Hydrogel named cGEL, an enzymatically degraded bovine gelatin chemically cross-linked with an oligomeric copolymer synthesized from pentaerythritol diacrylate monostearate (PEDAS), maleic anhydride (MA), and N-isopropylacrylamide (NiPAAm) or diacetone acrylamide (DAAm), was used. The cGEL provided a friendly three-dimensional (3D) cultivation environment for human melanocytes with increased melanin content of the 3D cultures in comparison to Collagen Cell Carrier® (CCC), a commercially available bovine decellularized collagen membrane, and electrospun polycaprolactone (PCL) matrices. One of the cGEL variants fostered not only a dramatic increase in melanin production but also a significant enhancement of melanotic gene PAX3, PMEL, TYR, and MITF expression in comparison to that of both CCC full-length collagen and PCL scaffolds, providing a clearly superior melanocyte niche that may be a suitable candidate for grafting carriers. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 3115-3126, 2016.
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Affiliation(s)
- Katharina Sülflow
- Saxon Incubator for Clinical Translation/Translational Centre for Regenerative Medicine, Leipzig University, Phillip-Rosenthal-Str.55, Leipzig, 04103, Germany
| | - Marie Schneider
- Saxon Incubator for Clinical Translation/Translational Centre for Regenerative Medicine, Leipzig University, Phillip-Rosenthal-Str.55, Leipzig, 04103, Germany
| | - Tina Loth
- Leipzig University, Faculty of Biosciences Pharmacy and Psychology, Institute of Pharmacy Dept of Pharmaceutical Technology, Eilenburger Straße 15 a, 04317, Leipzig, Germany
| | - Christian Kascholke
- Leipzig University, Faculty of Biosciences Pharmacy and Psychology, Institute of Pharmacy Dept of Pharmaceutical Technology, Eilenburger Straße 15 a, 04317, Leipzig, Germany
| | - Michaela Schulz-Siegmund
- Leipzig University, Faculty of Biosciences Pharmacy and Psychology, Institute of Pharmacy Dept of Pharmaceutical Technology, Eilenburger Straße 15 a, 04317, Leipzig, Germany
| | - Michael C Hacker
- Leipzig University, Faculty of Biosciences Pharmacy and Psychology, Institute of Pharmacy Dept of Pharmaceutical Technology, Eilenburger Straße 15 a, 04317, Leipzig, Germany
| | - Jan-Christoph Simon
- Clinic and Policlinic for Dermatology, Venereology, and Allergology, Leipzig University Clinic, Faculty of Medicine, Leipzig, Germany
| | - Vuk Savkovic
- Saxon Incubator for Clinical Translation/Translational Centre for Regenerative Medicine, Leipzig University, Phillip-Rosenthal-Str.55, Leipzig, 04103, Germany.
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27
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Liu B, Wang Y, Yang F, Wang X, Shen H, Cui H, Wu D. Construction of a controlled-release delivery system for pesticides using biodegradable PLA-based microcapsules. Colloids Surf B Biointerfaces 2016; 144:38-45. [PMID: 27062215 DOI: 10.1016/j.colsurfb.2016.03.084] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 03/29/2016] [Accepted: 03/31/2016] [Indexed: 01/08/2023]
Abstract
Conventional pesticides usually need to be used in more than recommended dosages due to their loss and degradation, which results in a large waste of resources and serious environmental pollution. Encapsulation of pesticides in biodegradable carriers is a feasible approach to develop environment-friendly and efficient controlled-release delivery system. In this work, we fabricated three kinds of polylactic acid (PLA) carriers including microspheres, microcapsules, and porous microcapsules for controlled delivery of Lambda-Cyhalothrin (LC) via premix membrane emulsification (PME). The microcapsule delivery system had better water dispersion than the other two systems. Various microcapsules with a high LC contents as much as 40% and tunable sizes from 0.68 to 4.6μm were constructed by manipulating the process parameters. Compared with LC technical and commercial microcapsule formulation, the microcapsule systems showed a significantly sustained release of LC for a longer period. The LC release triggered by LC diffusion and matrix degradation could be optimally regulated by tuning LC contents and particle sizes of the microcapsules. This multi-regulated release capability is of great significance to achieve the precisely controlled release of pesticides. A preliminary bioassay against plutella xylostella revealed that 0.68μm LC-loaded microcapsules with good UV and thermal stability exhibited an activity similar to a commercial microcapsule formulation. These results demonstrated such an aqueous microcapsule delivery system had a great potential to be further explored for developing an effective and environmentally friendly pesticide-release formulation.
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Affiliation(s)
- Baoxia Liu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yan Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academic of Agriculture Sciences, Beijing 100081, China
| | - Fei Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hong Shen
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Haixin Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academic of Agriculture Sciences, Beijing 100081, China.
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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28
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Peng IC, Yeh CC, Lu YT, Muduli S, Ling QD, Alarfaj AA, Munusamy MA, Kumar SS, Murugan K, Lee HC, Chang Y, Higuchi A. Continuous harvest of stem cells via partial detachment from thermoresponsive nanobrush surfaces. Biomaterials 2016; 76:76-86. [DOI: 10.1016/j.biomaterials.2015.10.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 10/15/2015] [Accepted: 10/18/2015] [Indexed: 12/19/2022]
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29
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Fabrication of pluronic and methylcellulose for etidronate delivery and their application for osteogenesis. Int J Pharm 2015; 499:110-118. [PMID: 26748362 DOI: 10.1016/j.ijpharm.2015.12.070] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/09/2015] [Accepted: 12/27/2015] [Indexed: 11/23/2022]
Abstract
Novel hydrogels were prepared by blending 4% (w/w) methylcellulose (MC) with various concentrations of 12, 14, 16, 18 and 20% (w/w) pluronic F127 (PF) to form injectable implant drug delivery systems. The blends formed gels using lower concentrations of PF compared to when using PF alone. Etidronate sodium (EDS) at a concentration of 4×10(-3)M was loaded into these blends for producing an osteogenesis effect. The pure gels or EDS loaded gels exhibited cytocompatibility to both the osteoblast (MC3T3-E1) and myoblast (C2C12) cell lines whereas the gels of 16PF, 18PF and 20PF were very cytotoxic to the cells. The EDS loaded gels demonstrated significantly greater alkaline phosphatase (ALP) activities compared to the pure gels. The longer exposure time periods of the samples to the cells, the greater was the ALP activity. These EDS loaded gels significantly increased proliferation of both cell lines thus indicating a bone regeneration effect. The PF/MC blends prolonged the in vitro release of EDS for more than 28 days. Based on the in vitro degradation test, the MC extensively improved the gel strength of the PF and delayed the degradation of the gels thus making them more functional for a sustained drug delivery for osteogenesis.
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30
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Vo TN, Shah SR, Lu S, Tatara AM, Lee EJ, Roh TT, Tabata Y, Mikos AG. Injectable dual-gelling cell-laden composite hydrogels for bone tissue engineering. Biomaterials 2015; 83:1-11. [PMID: 26773659 DOI: 10.1016/j.biomaterials.2015.12.026] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 12/15/2015] [Accepted: 12/19/2015] [Indexed: 02/07/2023]
Abstract
The present work investigated the osteogenic potential of injectable, dual thermally and chemically gelable composite hydrogels for mesenchymal stem cell (MSC) delivery in vitro and in vivo. Composite hydrogels comprising copolymer macromers of N-isopropylacrylamide were fabricated through the incorporation of gelatin microparticles (GMPs) as enzymatically digestible porogens and sites for cellular attachment. High and low polymer content hydrogels with and without GMP loading were shown to successfully encapsulate viable MSCs and maintain their survival over 28 days in vitro. GMP incorporation was also shown to modulate alkaline phosphatase production, but enhanced hydrogel mineralization along with higher polymer content even in the absence of cells. Moreover, the regenerative capacity of 2 mm thick hydrogels with GMPs only, MSCs only, or GMPs and MSCs was evaluated in vivo in an 8 mm rat critical size cranial defect for 4 and 12 weeks. GMP incorporation led to enhanced bony bridging and mineralization within the defect at each timepoint, and direct bone-implant contact as determined by microcomputed tomography and histological scoring, respectively. Encapsulation of both GMPs and MSCs enabled hydrogel degradation leading to significant tissue infiltration and osteoid formation. The results suggest that these injectable, dual-gelling cell-laden composite hydrogels can facilitate bone ingrowth and integration, warranting further investigation for bone tissue engineering.
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Affiliation(s)
- T N Vo
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX, 77251-1892, USA
| | - S R Shah
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX, 77251-1892, USA
| | - S Lu
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX, 77251-1892, USA
| | - A M Tatara
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX, 77251-1892, USA
| | - E J Lee
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX, 77251-1892, USA
| | - T T Roh
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX, 77251-1892, USA
| | - Y Tabata
- Department of Biomaterials, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - A G Mikos
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX, 77251-1892, USA; Department of Chemical and Biomolecular Engineering, Rice University, P.O. Box 1892, MS 362, Houston, TX, 77251-1892, USA.
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31
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Hacker MC, Nawaz HA. Multi-Functional Macromers for Hydrogel Design in Biomedical Engineering and Regenerative Medicine. Int J Mol Sci 2015; 16:27677-706. [PMID: 26610468 PMCID: PMC4661914 DOI: 10.3390/ijms161126056] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 10/31/2015] [Accepted: 11/04/2015] [Indexed: 01/09/2023] Open
Abstract
Contemporary biomaterials are expected to provide tailored mechanical, biological and structural cues to encapsulated or invading cells in regenerative applications. In addition, the degradative properties of the material also have to be adjustable to the desired application. Oligo- or polymeric building blocks that can be further cross-linked into hydrogel networks, here addressed as macromers, appear as the prime option to assemble gels with the necessary degrees of freedom in the adjustment of the mentioned key parameters. Recent developments in the design of multi-functional macromers with two or more chemically different types of functionalities are summarized and discussed in this review illustrating recent trends in the development of advanced hydrogel building blocks for regenerative applications.
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Affiliation(s)
- Michael C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Str. 15a, D-04317 Leipzig, Germany.
| | - Hafiz Awais Nawaz
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Str. 15a, D-04317 Leipzig, Germany.
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32
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Thermoresponsive hydrogels in biomedical applications. Eur J Pharm Biopharm 2015; 97:338-49. [DOI: 10.1016/j.ejpb.2015.05.017] [Citation(s) in RCA: 321] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 05/07/2015] [Accepted: 05/21/2015] [Indexed: 11/21/2022]
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33
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Watson BM, Vo TN, Engel PS, Mikos AG. Biodegradable, in Situ-Forming Cell-Laden Hydrogel Composites of Hydroxyapatite Nanoparticles for Bone Regeneration. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01388] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Brendan M. Watson
- Departments of Bioengineering and ‡Chemistry, Rice University, Houston, Texas 77030, United States
| | - Tiffany N. Vo
- Departments of Bioengineering and ‡Chemistry, Rice University, Houston, Texas 77030, United States
| | - Paul S. Engel
- Departments of Bioengineering and ‡Chemistry, Rice University, Houston, Texas 77030, United States
| | - Antonios G. Mikos
- Departments of Bioengineering and ‡Chemistry, Rice University, Houston, Texas 77030, United States
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34
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Radivojša Matanović M, Grabnar I, Gosenca M, Ahlin Grabnar P. Prolonged subcutaneous delivery of low molecular weight heparin based on thermoresponsive hydrogels with chitosan nanocomplexes: Design, in vitro evaluation, and cytotoxicity studies. Int J Pharm 2015; 488:127-35. [DOI: 10.1016/j.ijpharm.2015.04.063] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 04/17/2015] [Accepted: 04/22/2015] [Indexed: 10/23/2022]
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35
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Novel fast thermal-responsive poly(N-isopropylacrylamide) hydrogels with functional cyclodextrin interpenetrating polymer networks for controlled drug release. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0720-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Huang G, Li H, Feng ST, Li X, Tong G, Liu J, Quan C, Jiang Q, Zhang C, Li Z. Self-assembled UCST-Type Micelles as Potential Drug Carriers for Cancer Therapeutics. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201400546] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Gang Huang
- School of Engineering; Sun Yat-sen University; Guangzhou 510006 Guangdong P.R. China
| | - Hao Li
- School of Engineering; Sun Yat-sen University; Guangzhou 510006 Guangdong P.R. China
| | - Shi-Ting Feng
- Department of Radiology; The First Affiliated Hospital of Sun Yat-sen University; Guangzhou 510080 Guangdong P.R. China
| | - Xiaoqiong Li
- School of Engineering; Sun Yat-sen University; Guangzhou 510006 Guangdong P.R. China
| | - Guoquan Tong
- School of Engineering; Sun Yat-sen University; Guangzhou 510006 Guangdong P.R. China
| | - Jie Liu
- School of Engineering; Sun Yat-sen University; Guangzhou 510006 Guangdong P.R. China
| | - Changyun Quan
- School of Engineering; Sun Yat-sen University; Guangzhou 510006 Guangdong P.R. China
| | - Qing Jiang
- School of Engineering; Sun Yat-sen University; Guangzhou 510006 Guangdong P.R. China
| | - Chao Zhang
- School of Engineering; Sun Yat-sen University; Guangzhou 510006 Guangdong P.R. China
| | - Ziping Li
- Department of Radiology; The First Affiliated Hospital of Sun Yat-sen University; Guangzhou 510080 Guangdong P.R. China
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37
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A novel thermo-responsive hydrogel based on salecan and poly(N-isopropylacrylamide): Synthesis and characterization. Colloids Surf B Biointerfaces 2015; 125:1-11. [DOI: 10.1016/j.colsurfb.2014.10.057] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 09/19/2014] [Accepted: 10/28/2014] [Indexed: 11/19/2022]
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38
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In vitro and in vivo evaluation of self-mineralization and biocompatibility of injectable, dual-gelling hydrogels for bone tissue engineering. J Control Release 2014; 205:25-34. [PMID: 25483428 DOI: 10.1016/j.jconrel.2014.11.028] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 11/12/2014] [Accepted: 11/24/2014] [Indexed: 11/22/2022]
Abstract
In this study, we investigated the mineralization capacity and biocompatibility of injectable, dual-gelling hydrogels in a rat cranial defect as a function of hydrogel hydrophobicity from either the copolymerization of a hydrolyzable lactone ring or the hydrogel polymer content. The hydrogel system comprised a poly(N-isopropylacrylamide)-based thermogelling macromer (TGM) and a polyamidoamine crosslinker. The thermogelling macromer was copolymerized with (TGM/DBA) or without (TGM) a dimethyl-γ-butyrolactone acrylate (DBA)-containing lactone ring that modulated the lower critical solution temperature and thus, the hydrogel hydrophobicity, over time. Three hydrogel groups were examined: (1) 15wt.% TGM, (2) 15wt.% TGM/DBA, and (3) 20wt.% TGM/DBA. The hydrogels were implanted within an 8mm critical size rat cranial defect for 4 and 12weeks. Implants were harvested at each timepoint and analyzed for bone formation, hydrogel mineralization and tissue response using microcomputed tomography (microCT). Histology and fibrous capsule scoring showed a light inflammatory response at 4weeks that was mitigated by 12weeks for all groups. MicroCT scoring and bone volume quantification demonstrated a similar bone formation at 4weeks that was significantly increased for the more hydrophobic hydrogel formulations - 15wt.% TGM and 20wt.% TGM/DBA - from 4weeks to 12weeks. A complementary in vitro acellular mineralization study revealed that the hydrogels exhibited calcium binding properties in the presence of serum-containing media, which was modulated by the hydrogel hydrophobicity. The tailored mineralization capacity of these injectable, dual-gelling hydrogels with hydrolysis-dependent hydrophobicity presents an exciting property for their use in bone tissue engineering applications.
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39
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Lowe SB, Tan VTG, Soeriyadi AH, Davis TP, Gooding JJ. Synthesis and High-Throughput Processing of Polymeric Hydrogels for 3D Cell Culture. Bioconjug Chem 2014; 25:1581-601. [DOI: 10.1021/bc500310v] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | | | | | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Parkville, VIC 3052, Australia
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Monash Institute
of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - J. Justin Gooding
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Parkville, VIC 3052, Australia
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40
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Hashmi B, Zarzar LD, Mammoto T, Mammoto A, Jiang A, Aizenberg J, Ingber DE. Developmentally-inspired shrink-wrap polymers for mechanical induction of tissue differentiation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:3253-7. [PMID: 24550068 PMCID: PMC4146397 DOI: 10.1002/adma.201304995] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 01/13/2014] [Indexed: 05/05/2023]
Abstract
A biologically inspired thermoresponsive polymer has been developed that mechanically induces tooth differentiation in vitro and in vivo by promoting mesenchymal cell compaction as seen in each pore of the scaffold. This normally occurs during the physiological mesenchymal condensation response that triggers tooth formation in the embryo.
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Affiliation(s)
- Basma Hashmi
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115 (USA)
- Harvard School of Engineering and Applied Sciences, Cambridge, MA 02138 (USA)
| | - Lauren D. Zarzar
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115 (USA)
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138 (USA)
| | - Tadanori Mammoto
- Vascular Biology Program, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115 (USA)
| | - Akiko Mammoto
- Vascular Biology Program, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115 (USA)
| | - Amanda Jiang
- Vascular Biology Program, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115 (USA)
| | - Joanna Aizenberg
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115 (USA)
- Harvard School of Engineering and Applied Sciences, Cambridge, MA 02138 (USA)
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138 (USA)
| | - Donald E. Ingber
- Address correspondence to: Donald E. Ingber, M.D.,Ph.D., Wyss Institute for Biologically Inspired Engineering, Harvard University, CLSB 5, 3 Blackfan Circle, Boston, MA 02115 (USA),
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41
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Kye EJ, Kim SJ, Park MH, Moon HJ, Ryu KH, Jeong B. Differentiation of Tonsil-Tissue-Derived Mesenchymal Stem Cells Controlled by Surface-Functionalized Microspheres in PEG-Polypeptide Thermogels. Biomacromolecules 2014; 15:2180-7. [DOI: 10.1021/bm500342r] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Eun Jeong Kye
- Department
of Chemistry and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Seung-Jin Kim
- Department
of Chemistry and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Min Hee Park
- Department
of Chemistry and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Hyo Jung Moon
- Department
of Chemistry and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Kyung Ha Ryu
- Departments
of Molecular Medicine, Otorhinolaryngology—Head and Neck Surgery
and Pediatrics, School of Medicine Ewha Womans University, Ewha Global Top 5
Research Program, Seoul, Korea
| | - Byeongmoon Jeong
- Department
of Chemistry and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
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42
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Tzouanas SN, Ekenseair AK, Kasper FK, Mikos AG. Mesenchymal stem cell and gelatin microparticle encapsulation in thermally and chemically gelling injectable hydrogels for tissue engineering. J Biomed Mater Res A 2014; 102:1222-30. [PMID: 24458783 PMCID: PMC3966975 DOI: 10.1002/jbm.a.35093] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Accepted: 01/21/2014] [Indexed: 11/08/2022]
Abstract
In this work, we investigated the viability and osteogenic differentiation of mesenchymal stem cells encapsulated with gelatin microparticles (GMPs) in an injectable, chemically and thermally gelling hydrogel system combining poly(N-isopropylacrylamide)-based thermogelling macromers containing pendant epoxy rings with polyamidoamine-based hydrophilic and degradable diamine crosslinking macromers. Specifically, we studied how the parameters of GMP size and loading ratio affected the viability and differentiation of cells encapsulated within the hydrogel. We also examined the effects of cell and GMP co-encapsulation on hydrogel mineralization. Cells demonstrated long-term viability within the hydrogels, which was shown to depend on GMP size and loading ratio. In particular, increased interaction of cells and GMPs through greater available GMP surface area, use of an epoxy-based chemical gelation mechanism, and the tunable high water content of the thermogelled hydrogels led to favorable long-term cell viability. Compared with cellular hydrogels without GMPs, hydrogels co-encapsulating cells and GMPs demonstrated greater production of alkaline phosphatase by cells at all time-points and a transient early enhancement of hydrogel mineralization for larger GMPs at higher loading ratios. Such injectable, in situ forming hydrogels capable of delivering and maintaining populations of encapsulated mesenchymal stem cells and promoting mineralization in vitro offer promise as novel therapies for applications in tissue engineering and regenerative medicine.
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Affiliation(s)
- Stephanie N. Tzouanas
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX 77251, USA
| | - Adam K. Ekenseair
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX 77251, USA
| | - F. Kurtis Kasper
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX 77251, USA
| | - Antonios G. Mikos
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX 77251, USA
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43
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Watson BM, Kasper FK, Engel PS, Mikos AG. Synthesis and characterization of injectable, biodegradable, phosphate-containing, chemically cross-linkable, thermoresponsive macromers for bone tissue engineering. Biomacromolecules 2014; 15:1788-96. [PMID: 24758298 PMCID: PMC4025585 DOI: 10.1021/bm500175e] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Novel,
injectable, biodegradable macromer solutions that form hydrogels
when elevated to physiologic temperature via a dual chemical and thermo-gelation
were fabricated and characterized. A thermogelling, poly(N-isopropylacrylamide)-based macromer with pendant phosphate groups
was synthesized and subsequently functionalized with chemically cross-linkable
methacrylate groups via degradable phosphate ester bonds, yielding
a dual-gelling macromer. These dual-gelling macromers were tuned to
have transition temperatures between room temperature and physiologic
temperature, allowing them to undergo instantaneous thermogelation
as well as chemical gelation when elevated to physiologic temperature.
Additionally, the chemical cross-linking of the hydrogels was shown
to mitigate hydrogel syneresis, which commonly occurs when thermogelling
materials are raised above their transition temperature. Finally,
degradation of the phosphate ester bonds of the cross-linked hydrogels
yielded macromers that were soluble at physiologic temperature. Further
characterization of the hydrogels demonstrated minimal cytotoxicity
of hydrogel leachables as well as in vitro calcification, making these
novel, injectable macromers promising materials for use in bone tissue
engineering.
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Affiliation(s)
- Brendan M Watson
- Department of Bioengineering, Rice University 6500 Main Street, Houston, Texas 77030, United States
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44
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Abstract
AbstractPolymers have been widely used in agriculture for applications including controlled release of pesticides and other active ingredients. The ability to predict their delivery helps avoid environmental hazards. Macromolecular matrices used as carriers in controlled release of agricultural active agents, especially pesticides, are reviewed. The review focuses on the advantages and mechanisms of controlled release. It includes biodegradable polymers in agriculture, their manufacturing methods, and their degradation mechanisms and kinetics. The article also presents a critical account of recent release studies and considers upcoming challenges.
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45
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Kennedy R, Ul Hassan W, Tochwin A, Zhao T, Dong Y, Wang Q, Tai H, Wang W. In situ formed hybrid hydrogels from PEG based multifunctional hyperbranched copolymers: a RAFT approach. Polym Chem 2014. [DOI: 10.1039/c3py01513k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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46
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Zhou L, Tan G, Tan Y, Wang H, Liao J, Ning C. Biomimetic mineralization of anionic gelatin hydrogels: effect of degree of methacrylation. RSC Adv 2014. [DOI: 10.1039/c4ra02271h] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The crosslinker contents of the hydrogel have a significant effect on the mineralization outcome, including crystallinity, content, and morphology of the mineral growth within the 3d gelatin methacrylate scaffold.
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Affiliation(s)
- Lei Zhou
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou, China
| | - Guoxin Tan
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou, China
| | - Ying Tan
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou, China
| | - Hang Wang
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou, China
| | - Jingwen Liao
- College of Materials Science and Technology
- South China University of Technology
- Guangzhou, China
| | - Chengyun Ning
- College of Materials Science and Technology
- South China University of Technology
- Guangzhou, China
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47
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Vo TN, Ekenseair AK, Kasper FK, Mikos AG. Synthesis, physicochemical characterization, and cytocompatibility of bioresorbable, dual-gelling injectable hydrogels. Biomacromolecules 2013; 15:132-42. [PMID: 24320599 DOI: 10.1021/bm401413c] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Injectable, dual-gelling hydrogels were successfully developed through the combination of physical thermogellation at 37 °C and favorable amine:epoxy chemical cross-linking. Poly(N-isopropylacrylamide)-based thermogelling macromers with a hydrolyzable lactone ring and epoxy pendant groups and a biodegradable diamine-functionalized polyamidoamine cross-linker were synthesized, characterized, and combined to produce nonsyneresing and bioresorbable hydrogels. Differential scanning calorimetry and oscillatory rheometry demonstrated the rapid and dual-gelling nature of the hydrogel formation. The postgelation dimensional stability, swelling, and mechanical behavior of the hydrogel system were shown to be easily tuned in the synthesis and formulation stages. The leachable products were found to be cytocompatible under all conditions, while the degradation products demonstrated a dose- and time-dependent response due to solution osmolality. Preliminary encapsulation studies showed mesenchymal stem cell viability could be maintained for 7 days. The results suggest that injectable and thermally and chemically cross-linkable hydrogels are promising alternatives to prefabricated biomaterials for tissue engineering applications, particularly for cell delivery.
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Affiliation(s)
- Tiffany N Vo
- Department of Bioengineering, Rice University , Houston, Texas 77030, United States
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48
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Reactive and stimuli-responsive maleic anhydride containing macromers – multi-functional cross-linkers and building blocks for hydrogel fabrication. REACT FUNCT POLYM 2013. [DOI: 10.1016/j.reactfunctpolym.2013.08.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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49
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Bassyouni F, ElHalwany N, Abdel Rehim M, Neyfeh M. Advances and new technologies applied in controlled drug delivery system. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1338-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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50
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Page JM, Harmata AJ, Guelcher SA. Design and development of reactive injectable and settable polymeric biomaterials. J Biomed Mater Res A 2013; 101:3630-45. [DOI: 10.1002/jbm.a.34665] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 02/05/2013] [Accepted: 02/14/2013] [Indexed: 12/21/2022]
Affiliation(s)
- Jonathan M. Page
- Department of Chemical and Biomolecular Engineering; Vanderbilt University; Nashville Tennessee
- Center for Bone Biology; Department of Medicine; Vanderbilt University Medical Center; Nashville Tennessee
| | - Andrew J. Harmata
- Department of Chemical and Biomolecular Engineering; Vanderbilt University; Nashville Tennessee
- Center for Bone Biology; Department of Medicine; Vanderbilt University Medical Center; Nashville Tennessee
| | - Scott A. Guelcher
- Department of Chemical and Biomolecular Engineering; Vanderbilt University; Nashville Tennessee
- Center for Bone Biology; Department of Medicine; Vanderbilt University Medical Center; Nashville Tennessee
- Department of Biomedical Engineering; Vanderbilt University; Nashville Tennessee
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