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Behrendt F, Gottschaldt M, Schubert US. Surface functionalized cryogels - characterization methods, recent progress in preparation and application. MATERIALS HORIZONS 2024. [PMID: 39021096 DOI: 10.1039/d4mh00315b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Cryogels are polymeric materials with a sponge-like microstructure and have attracted significant attention in recent decades. Research has focused on their composition, fabrication techniques, characterization methods as well as potential or existing fields of applications. The use of functional precursors or functionalizing ligands enables the preparation of cryogels with desired properties such as biocompatibility or responsivity. They can also exhibit adsorptive properties or can be used for catalytical purposes. Although a very brief overview about several functional (macro-)monomers and functionalizing ligands has been provided by previous reviewers for certain cryogel applications, so far there has been no particular focus on the evaluation of the functionalization success and the characterization methods used. This review will provide a comprehensive overview of different characterization methods most recently used for the evaluation of cryogel functionalization. Furthermore, new functional (macro-)monomers and subsequent cryogel functionalization strategies are discussed, based on synthetic polymers, biopolymers and a combination of both. This review highlights the importance of the functionalization aspect in cryogel research in order to produce materials with tailored properties for certain applications.
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Affiliation(s)
- Florian Behrendt
- Laboratory of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
- Cluster of Excellence Balance of the Microverse, Friedrich Schiller University Jena, Jena, Germany
| | - Michael Gottschaldt
- Laboratory of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
- Cluster of Excellence Balance of the Microverse, Friedrich Schiller University Jena, Jena, Germany
- Abbe Center of Photonics (ACP), Albert-Einstein-Straße 6, 07743 Jena, Germany
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2
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Gerrits L, Bakker B, Hendriks LD, Engels S, Hammink R, Kouwer PHJ. Tailoring of Physical Properties in Macroporous Poly(isocyanopeptide) Cryogels. Biomacromolecules 2024; 25:3464-3474. [PMID: 38743442 PMCID: PMC11170948 DOI: 10.1021/acs.biomac.4c00086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 05/01/2024] [Accepted: 05/02/2024] [Indexed: 05/16/2024]
Abstract
Over the years, synthetic hydrogels have proven remarkably useful as cell culture matrixes to elucidate the role of the extracellular matrix (ECM) on cell behavior. Yet, their lack of interconnected macropores undermines the widespread use of hydrogels in biomedical applications. To overcome this limitation, cryogels, a class of macroporous hydrogels, are rapidly emerging. Here, we introduce a new, highly elastic, and tunable synthetic cryogel, based on poly(isocyanopeptides) (PIC). Introduction of methacrylate groups on PIC facilitated cryopolymerization through free-radical polymerization and afforded cryogels with an interconnected macroporous structure. We investigated which cryogelation parameters can be used to tune the architectural and mechanical properties of the PIC cryogels by systematically altering cryopolymerization temperature, polymer concentration, and polymer molecular weight. We show that for decreasing cryopolymerization temperatures, there is a correlation between cryogel pore size and stiffness. More importantly, we demonstrate that by simply varying the polymer concentration, we can selectively tune the compressive strength of PIC cryogels without affecting their architecture. This unique feature is highly useful for biomedical applications, as it facilitates decoupling of stiffness from other variables such as pore size. As such, PIC cryogels provide an interesting new biomaterial for scientists to unravel the role of the ECM in cellular functions.
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Affiliation(s)
- Lotte Gerrits
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Bram Bakker
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Lynn D. Hendriks
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Sjoerd Engels
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Roel Hammink
- Department
of Medical BioSciences,Radboudumc, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
- Division
of Immunotherapy, Oncode Institute, Radboud
University Medical Center, 6525 GA Nijmegen ,Netherlands
| | - Paul H. J. Kouwer
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
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3
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Wilson KL, Joseph NI, Onweller LA, Anderson AR, Darling NJ, David-Bercholz J, Segura T. SDF-1 Bound Heparin Nanoparticles Recruit Progenitor Cells for Their Differentiation and Promotion of Angiogenesis after Stroke. Adv Healthc Mater 2023:e2302081. [PMID: 38009291 PMCID: PMC11128481 DOI: 10.1002/adhm.202302081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 11/22/2023] [Indexed: 11/28/2023]
Abstract
Angiogenesis after stroke is correlated with enhanced tissue repair and functional outcomes. The existing body of research in biomaterials for stroke focuses on hydrogels for the delivery of stem cells, growth factors, or small molecules or drugs. Despite the ability of hydrogels to enhance all these delivery methods, no material has significantly regrown vasculature within the translatable timeline of days to weeks after stroke. Here, two novel biomaterial formulations of granular hydrogels are developed for tissue regeneration after stroke: highly porous microgels (i.e., Cryo microgels) and microgels bound with heparin-norbornene nanoparticles with covalently bound SDF-1α. The combination of these materials results in perfused vessels throughout the stroke core in only 10 days, in addition to increased neural progenitor cell recruitment, maintenance, and increased neuronal differentiation.
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Affiliation(s)
- Katrina L. Wilson
- Department of Biomedical Engineering, Duke University, Durham NC 27708-0281, USA
| | - Neica I. Joseph
- Department of Biomedical Engineering, Duke University, Durham NC 27708-0281, USA
| | - Lauren A. Onweller
- Department of Biomedical Engineering, Duke University, Durham NC 27708-0281, USA
| | - Alexa R. Anderson
- Department of Biomedical Engineering, Duke University, Durham NC 27708-0281, USA
| | - Nicole J. Darling
- Department of Chemical and Biomolecular Engineering, University of California Los Angeles, Los Angeles, CA 90095, USA
| | | | - Tatiana Segura
- Department of Biomedical Engineering, Duke University, Durham NC 27708-0281, USA
- Department of Neurology, Duke University, Durham, NC, 27708-0281 USA
- Department of Dermatology, Duke University, Durham, NC, 27708-0281 USA
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Ni H, Qian S, Lu J, Feng J, Mou XZ, Zhang J. Natural Polysaccharide Delivery Platforms with Multiscale Structure Used for Cancer Chemoimmunotherapy. Mol Pharm 2023; 20:5778-5789. [PMID: 37752866 DOI: 10.1021/acs.molpharmaceut.3c00633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
Chemoimmunotherapy is an effective cancer treatment method. Drugs are always combined and used in treating cancer. However, the characteristic of drugs varies, making it challenging to control their release kinetics utilizing delivery devices with a single microstructure. In this study, we attempted to uniformly size drugs of varying molecular weights and confine them in a compartment where immune cells may be recruited and moved freely. Dextran microgels were created as modular drug libraries to address the cryogel burst release of small molecule drugs. Then, modular drug libraries and granulocyte-macrophage colony-stimulating factor (GM-CSF) were integrated into cryogels for a combined treatment. Herein, alginate was zwitterion modified to avoid the immune reaction generated by the material. Because of its macroporous structure, the cryogel could be injected into the body, eliminating invasive surgical procedures. Results demonstrated that multiscale delivery platforms could improve the synergistic effect of various medications on tumor treatment.
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Affiliation(s)
- Haifeng Ni
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Sunxiang Qian
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Jie Lu
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Jie Feng
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Xiao-Zhou Mou
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang 310014, P. R. China
| | - Jing Zhang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
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Le-Vinh B, Steinbring C, Nguyen Le NM, Matuszczak B, Bernkop-Schnürch A. S-Protected Thiolated Chitosan versus Thiolated Chitosan as Cell Adhesive Biomaterials for Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2023; 15:40304-40316. [PMID: 37594415 PMCID: PMC10472333 DOI: 10.1021/acsami.3c09337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 08/07/2023] [Indexed: 08/19/2023]
Abstract
Chitosan (Ch) and different Ch derivatives have been applied in tissue engineering (TE) because of their biocompatibility, favored mechanical properties, and cost-effectiveness. Most of them, however, lack cell adhesive properties that are crucial for TE. In this study, we aimed to design an S-protected thiolated Ch derivative exhibiting high cell adhesive properties serving as a scaffold for TE. 3-((2-Acetamido-3-methoxy-3-oxopropyl)dithio) propanoic acid was covalently attached to Ch via a carbodiimide-mediated reaction. Low-, medium-, and high-modified Chs (Ch-SS-1, Ch-SS-2, and Ch-SS-3) with 54, 107 and 140 μmol of ligand per gram of polymer, respectively, were tested. In parallel, three thiolated Chs, namely Ch-SH-1, Ch-SH-2, and Ch-SH-3, were prepared by conjugating N-acetyl cysteine to Ch at the same degree of modification to compare the effectiveness of disulfide versus thiol modification on cell adhesion. Ch-SS-1 showed better cell adhesion capability than Ch-SS-2 and Ch-SS-3. This can be explained by the more lipophilic surfaces of Ch-SS as a higher modification was made. Although Ch-SH-1, Ch-SH-2, and Ch-SH-3 were shown to be good substrates for cell adhesion, growth, and proliferation, Ch-SS polymers were superior to Ch-SH polymers in the formation of 3D cell cultures. Cryogels structured by Ch-SS-1 (SSg) resulted in homogeneous scaffolds with tunable pore size and mechanical properties by changing the mass ratio between Ch-SS-1 and heparin used as a cross-linker. SSg scaffolds possessing interconnected microporous structures showed good cell migration, adhesion, and proliferation. Therefore, Ch-SS can be used to construct tunable cryogel scaffolds that are suitable for 3D cell culture and TE.
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Affiliation(s)
- Bao Le-Vinh
- Department
of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
- Department
of Industrial Pharmacy, Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh city, 700000 Ho Chi Minh
City, Vietnam
| | - Christian Steinbring
- Department
of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Nguyet-Minh Nguyen Le
- Department
of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
- Department
of Industrial Pharmacy, Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh city, 700000 Ho Chi Minh
City, Vietnam
| | - Barbara Matuszczak
- Department
of Pharmaceutical Chemistry, Institute of Pharmacy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Andreas Bernkop-Schnürch
- Department
of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
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Wilson KL, Onweller LA, Joseph NI, David-Bercholz J, Darling NJ, Segura T. SDF-1 Bound Heparin Nanoparticles Recruit Progenitor Cells for Their Differentiation and Promotion of Angiogenesis After Stroke. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.05.547800. [PMID: 37461490 PMCID: PMC10349963 DOI: 10.1101/2023.07.05.547800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Angiogenesis after stroke is correlated with enhanced tissue repair and functional outcomes. The existing body of research in biomaterials for stroke focuses on hydrogels for the delivery of stem cells, growth factors, or small molecules or drugs. Despite the ability of hydrogels to enhance all these delivery methods, no material has significantly regrown vasculature within the translatable timeline of days to weeks after stroke. Here we developed 2 novel biomaterials for tissue regeneration after stroke, a highly porous granular hydrogel termed Cryo microgels, and heparin-norbornene nanoparticles with covalently bound SDF-1α. The combination of these materials resulted in fully revascularized vessels throughout the stroke core in only 10 days, as well as increased neural progenitor cell migration and maintenance and increased neurons.
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Zhang K, Yang C, Cheng C, Shi C, Sun M, Hu H, Shi T, Chen X, He X, Zheng X, Li M, Shao D. Bioactive Injectable Hydrogel Dressings for Bacteria-Infected Diabetic Wound Healing: A "Pull-Push" Approach. ACS APPLIED MATERIALS & INTERFACES 2022; 14:26404-26417. [PMID: 35649246 DOI: 10.1021/acsami.2c04300] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Chronic diabetic wound healing remains a challenge due to the existence of excessive danger molecules and bacteria in the inflammatory microenvironment. There is an urgent need for advanced wound dressings that target both inflammation and infection. Here, a bioactive hydrogel without loading any anti-inflammatory ingredients is rationally designed to achieve a "Pull-Push" approach for efficient and safe bacteria-infected diabetic wound healing by integrating danger molecule scavenging (Pull) with antibiotic delivery (Push) in the inflammatory microenvironment. The cationic hydrogel, termed the OCMC-Tob/PEI hydrogel, is fabricated by the conjugation of polyethylenimine (PEI) and tobramycin (Tob) on an oxidized carboxymethyl cellulose (OCMC) backbone via the Schiff base reaction with injectable, self-healing, and biocompatible properties. The OCMC-Tob/PEI hydrogel not only displays the remarkable capability of capturing multiple negatively charged danger molecules (e.g., cell-free DNA, lipopolysaccharides, and tumor necrosis factor-α) to ameliorate anti-inflammation effects but also achieves controllable long-term antibacterial activity by the pH-sensitive release of Tob. Consequently, this multifunctional hydrogel greatly expedites the wound closure rate with combined anti-inflammation and anti-infection effects on Pseudomonas aeruginosa-infected diabetic wounds. Our work provides a highly versatile treatment approach for chronic diabetic wounds and a promising dressing for regenerative medicine.
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Affiliation(s)
- Kunbao Zhang
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong 510006, China
- Guangdong Provincial Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou 510006, China
| | - Chao Yang
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong 511442, China
- Department of Biomedical Engineering, Columbia University, New York, New York 10027, United States
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong 510006, China
| | - Chuanxu Cheng
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou 510006, China
| | - Chengxin Shi
- Department of Plastic and Aesthetic Center, The First Affiliated Hospital of Zhejiang University, Hangzhou, Zhejiang 310000, China
| | - Madi Sun
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong 510006, China
| | - Hanze Hu
- Department of Biomedical Engineering, Columbia University, New York, New York 10027, United States
| | - Tongfei Shi
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong 510006, China
| | - Xuenian Chen
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong 511442, China
- Institutes for Life Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong 510006, China
| | - Xuan He
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong 510006, China
| | - Xiao Zheng
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong 510006, China
| | - Mingqiang Li
- Laboratory of Biomaterials and Translational Medicine, Center for Nanomedicine, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
| | - Dan Shao
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong 511442, China
- Institutes for Life Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong 510006, China
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Wang J, Zhang Y, Pi J, Xing D, Wang C. Localized delivery of immunotherapeutics: A rising trend in the field. J Control Release 2021; 340:149-167. [PMID: 34699871 DOI: 10.1016/j.jconrel.2021.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/11/2021] [Indexed: 02/08/2023]
Abstract
Immunotherapy is becoming a new standard of care for multiple cancers, while several limitations are impending its further clinical success. Immunotherapeutic agents often have inappropriate pharmacokinetics on their own and/or exhibit limited specificity to tumor cells, leading to severe immuno-related adverse effects and limited efficacy. Suitable formulating strategies that confer prolonged contact with or efficient proliferation in tumors while reducing exposure to normal tissues are highly worthy to explore. With the assistance of biomaterial carriers, targeted therapy can be achieved artificially by implanting or injecting drug depots into desired sites, about which the wisdoms in literature have been rich. The relevant results have suggested a "local but systemic" effect, that is, local replenishment of immune modulators achieves a high treatment efficacy that also governs distant metastases, thereby building another rationale for localized delivery. Particularly, implantable scaffolds have been further engineered to recruit disseminated tumor cells with an efficiency high enough to reduce tumor burdens at typical metastatic organs, and simultaneously provide diagnostic signals. This review introduces recent advances in this emerging area along with a perspective on the opportunities and challenges in the way to clinical application.
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Affiliation(s)
- Jie Wang
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266071, China; Qingdao Cancer Institute, Qingdao University, Qingdao 266071, China.
| | - Yukun Zhang
- Qingdao Cancer Institute, Qingdao University, Qingdao 266071, China
| | - Jiuchan Pi
- Qingdao Cancer Institute, Qingdao University, Qingdao 266071, China
| | - Dongming Xing
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266071, China; Qingdao Cancer Institute, Qingdao University, Qingdao 266071, China; School of Life Sciences, Tsinghua University, Beijing 100084, China.
| | - Chao Wang
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266071, China; Qingdao Cancer Institute, Qingdao University, Qingdao 266071, China.
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Sievers J, Zimmermann R, Friedrichs J, Pette D, Limasale YDP, Werner C, Welzel PB. Customizing biohybrid cryogels to serve as ready-to-use delivery systems of signaling proteins. Biomaterials 2021; 278:121170. [PMID: 34628192 DOI: 10.1016/j.biomaterials.2021.121170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 09/09/2021] [Accepted: 09/28/2021] [Indexed: 12/17/2022]
Abstract
Macroporous cryogels have recently gained increasing interest for the controlled administration of signaling proteins in tissue engineering due to an advantageous combination of material properties. However, most of the previously reported cryogel systems did not allow for tunable, sustained protein release. We therefore designed a set of ready-to-use multi-armed polyethylene glycol (starPEG)-heparin cryogel systems containing different amounts of the protein-affine glycosaminoglycan component heparin to enable systematically tunable long-term delivery of different signaling proteins without affecting other cell-instructive properties. Experimental data and mathematical modeling indicate that the macroporous structure causes local differences in the concentration of proteins released into the pores and in the surrounding of the cryogels. As a proof-of-concept for their ready-to-use potential, cryogels pre-functionalized with signaling proteins and cell adhesion-peptides were demonstrated to induce the neuronal differentiation of colonizing pheochromocytoma cells. The elaborated approach opens up new perspectives for cryogels as easily storable and applicable systems for the precision delivery of signaling proteins.
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Affiliation(s)
- Jana Sievers
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Str. 6, 01069, Dresden, Germany
| | - Ralf Zimmermann
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Str. 6, 01069, Dresden, Germany
| | - Jens Friedrichs
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Str. 6, 01069, Dresden, Germany
| | - Dagmar Pette
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Str. 6, 01069, Dresden, Germany
| | - Yanuar Dwi Putra Limasale
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Str. 6, 01069, Dresden, Germany
| | - Carsten Werner
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Str. 6, 01069, Dresden, Germany; Technische Universität Dresden, Center for Regenerative Therapies Dresden and Cluster of Excellence Physics of Life, 01062, Dresden, Germany.
| | - Petra Birgit Welzel
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Str. 6, 01069, Dresden, Germany.
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10
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Wartenberg A, Weisser J, Schnabelrauch M. Glycosaminoglycan-Based Cryogels as Scaffolds for Cell Cultivation and Tissue Regeneration. Molecules 2021; 26:5597. [PMID: 34577067 PMCID: PMC8466427 DOI: 10.3390/molecules26185597] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/08/2021] [Accepted: 09/12/2021] [Indexed: 12/12/2022] Open
Abstract
Cryogels are a class of macroporous, interconnective hydrogels polymerized at sub-zero temperatures forming mechanically robust, elastic networks. In this review, latest advances of cryogels containing mainly glycosaminoglycans (GAGs) or composites of GAGs and other natural or synthetic polymers are presented. Cryogels produced in this way correspond to the native extracellular matrix (ECM) in terms of both composition and molecular structure. Due to their specific structural feature and in addition to an excellent biocompatibility, GAG-based cryogels have several advantages over traditional GAG-hydrogels. This includes macroporous, interconnective pore structure, robust, elastic, and shape-memory-like mechanical behavior, as well as injectability for many GAG-based cryogels. After addressing the cryogelation process, the fabrication of GAG-based cryogels and known principles of GAG monomer crosslinking are discussed. Finally, an overview of specific GAG-based cryogels in biomedicine, mainly as polymeric scaffold material in tissue regeneration and tissue engineering-related controlled release of bioactive molecules and cells, is provided.
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Affiliation(s)
- Annika Wartenberg
- Biomaterials Department, INNOVENT e.V., Pruessingstrasse 27B, 07745 Jena, Germany;
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11
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Savina IN, Zoughaib M, Yergeshov AA. Design and Assessment of Biodegradable Macroporous Cryogels as Advanced Tissue Engineering and Drug Carrying Materials. Gels 2021; 7:79. [PMID: 34203439 PMCID: PMC8293244 DOI: 10.3390/gels7030079] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/17/2021] [Accepted: 06/22/2021] [Indexed: 12/13/2022] Open
Abstract
Cryogels obtained by the cryotropic gelation process are macroporous hydrogels with a well-developed system of interconnected pores and shape memory. There have been significant recent advancements in our understanding of the cryotropic gelation process, and in the relationship between components, their structure and the application of the cryogels obtained. As cryogels are one of the most promising hydrogel-based biomaterials, and this field has been advancing rapidly, this review focuses on the design of biodegradable cryogels as advanced biomaterials for drug delivery and tissue engineering. The selection of a biodegradable polymer is key to the development of modern biomaterials that mimic the biological environment and the properties of artificial tissue, and are at the same time capable of being safely degraded/metabolized without any side effects. The range of biodegradable polymers utilized for cryogel formation is overviewed, including biopolymers, synthetic polymers, polymer blends, and composites. The paper discusses a cryotropic gelation method as a tool for synthesis of hydrogel materials with large, interconnected pores and mechanical, physical, chemical and biological properties, adapted for targeted biomedical applications. The effect of the composition, cross-linker, freezing conditions, and the nature of the polymer on the morphology, mechanical properties and biodegradation of cryogels is discussed. The biodegradation of cryogels and its dependence on their production and composition is overviewed. Selected representative biomedical applications demonstrate how cryogel-based materials have been used in drug delivery, tissue engineering, regenerative medicine, cancer research, and sensing.
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Affiliation(s)
- Irina N. Savina
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, UK
| | - Mohamed Zoughaib
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia; (M.Z.); (A.A.Y.)
| | - Abdulla A. Yergeshov
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia; (M.Z.); (A.A.Y.)
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12
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Newland B, Newland H, Lorenzi F, Eigel D, Welzel PB, Fischer D, Wang W, Freudenberg U, Rosser A, Werner C. Injectable Glycosaminoglycan-Based Cryogels from Well-Defined Microscale Templates for Local Growth Factor Delivery. ACS Chem Neurosci 2021; 12:1178-1188. [PMID: 33754692 PMCID: PMC8033563 DOI: 10.1021/acschemneuro.1c00005] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
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Glycosaminoglycan-based hydrogels
hold great potential for applications
in tissue engineering and regenerative medicine. By mimicking the
natural extracellular matrix processes of growth factor binding and
release, such hydrogels can be used as a sustained delivery device
for growth factors. Since neural networks commonly follow well-defined,
high-aspect-ratio paths through the central and peripheral nervous
system, we sought to create a fiber-like, elongated growth factor
delivery system. Cryogels, with networks formed at subzero temperatures,
are well-suited for the creation of high-aspect-ratio biomaterials,
because they have a macroporous structure making them mechanically
robust (for ease of handling) yet soft and highly compressible (for
interfacing with brain tissue). Unlike hydrogels, cryogels can be
synthesized in advance of their use, stored with ease, and rehydrated
quickly to their original shape. Herein, we use solvent-assisted microcontact
molding to form sacrificial templates, in which we produced highly
porous cryogel microscale scaffolds with a well-defined elongated
shape via the photopolymerization of poly(ethylene glycol) diacrylate
and maleimide-functionalized heparin. Dissolution of the template
yielded cryogels that could load nerve growth factor (NGF) and release
it over a period of 2 weeks, causing neurite outgrowth in PC12 cell
cultures. This microscale template-assisted synthesis technique allows
tight control over the cryogel scaffold dimensions for high reproducibility
and ease of injection through fine gauge needles.
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Affiliation(s)
- Ben Newland
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff CF10 3NB, U.K
| | - Heike Newland
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
| | - Francesca Lorenzi
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Francesco Marzolo, 135131 Padova, Italy
| | - Dimitri Eigel
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
| | - Petra B. Welzel
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
| | - Dieter Fischer
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
| | - Wenxin Wang
- Charles Institute for Dermatology, University College Dublin, Dublin D04 V1W8, Ireland
| | - Uwe Freudenberg
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
| | - Anne Rosser
- Brain Repair Group, School of Biosciences, Cardiff University, Cardiff CF10 3AX, U.K
- Brain Repair And Intracranial Neurotherapeutics (BRAIN) Unit, Neuroscience and Mental Health Research Institute, Cardiff University, Hadyn Ellis
Building, Maindy Road, Cardiff CF24 4HQ3, U.K
| | - Carsten Werner
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
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13
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Eigel D, Schuster R, Männel MJ, Thiele J, Panasiuk MJ, Andreae LC, Varricchio C, Brancale A, Welzel PB, Huttner WB, Werner C, Newland B, Long KR. Sulfonated cryogel scaffolds for focal delivery in ex-vivo brain tissue cultures. Biomaterials 2021; 271:120712. [PMID: 33618220 DOI: 10.1016/j.biomaterials.2021.120712] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 02/02/2021] [Accepted: 02/07/2021] [Indexed: 12/11/2022]
Abstract
The human brain has unique features that are difficult to study in animal models, including the mechanisms underlying neurodevelopmental and psychiatric disorders. Despite recent advances in human primary brain tissue culture systems, the use of these models to elucidate cellular disease mechanisms remains limited. A major reason for this is the lack of tools available to precisely manipulate a specific area of the tissue in a reproducible manner. Here we report an easy-to-use tool for site-specific manipulation of human brain tissue in culture. We show that line-shaped cryogel scaffolds synthesized with precise microscale dimensions allow the targeted delivery of a reagent to a specific region of human brain tissue in culture. 3-sulfopropyl acrylate (SPA) was incorporated into the cryogel network to yield a negative surface charge for the reversible binding of molecular cargo. The fluorescent dyes BODIPY and DiI were used as model cargos to show that placement of dye loaded scaffolds onto brain tissue in culture resulted in controlled delivery without a burst release, and labelling of specific regions without tissue damage. We further show that cryogels can deliver tetrodotoxin to tissue, inhibiting neuronal function in a reversible manner. The robust nature and precise dimensions of the cryogel resulted in a user-friendly and reproducible tool to manipulate primary human tissue cultures. These easy-to-use cryogels offer an innovate approach for more complex manipulations of ex-vivo tissue.
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Affiliation(s)
- Dimitri Eigel
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069, Dresden, Germany
| | - Romy Schuster
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstraße 108, D-01307, Dresden, Germany
| | - Max J Männel
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069, Dresden, Germany
| | - Julian Thiele
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069, Dresden, Germany
| | - Martyna J Panasiuk
- Centre for Developmental Neurobiology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, MRC Centre for Neurodevelopmental Disorders, King's College London, London, SE1 1UL, United Kingdom
| | - Laura C Andreae
- Centre for Developmental Neurobiology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, MRC Centre for Neurodevelopmental Disorders, King's College London, London, SE1 1UL, United Kingdom
| | - Carmine Varricchio
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff, CF10 3NB, UK
| | - Andrea Brancale
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff, CF10 3NB, UK
| | - Petra B Welzel
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069, Dresden, Germany
| | - Wieland B Huttner
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstraße 108, D-01307, Dresden, Germany
| | - Carsten Werner
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069, Dresden, Germany; Technische Universität Dresden, Center for Regenerative Therapies Dresden, Fetscherstr. 105, 01307, Dresden, Germany
| | - Ben Newland
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069, Dresden, Germany; School of Pharmacy and Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff, CF10 3NB, UK.
| | - Katherine R Long
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstraße 108, D-01307, Dresden, Germany; Centre for Developmental Neurobiology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, MRC Centre for Neurodevelopmental Disorders, King's College London, London, SE1 1UL, United Kingdom.
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14
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Eigel D, Werner C, Newland B. Cryogel biomaterials for neuroscience applications. Neurochem Int 2021; 147:105012. [PMID: 33731275 DOI: 10.1016/j.neuint.2021.105012] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 12/16/2022]
Abstract
Biomaterials in the form of 3D polymeric scaffolds have been used to create structurally and functionally biomimetic constructs of nervous system tissue. Such constructs can be used to model defects and disease or can be used to supplement neuronal tissue regeneration and repair. One such group of biomaterial scaffolds are hydrogels, which have been widely investigated for cell/tissue culture and as cell or molecule delivery systems in the field of neurosciences. However, a subset of hydrogels called cryogels, have shown to possess several distinct structural advantages over conventional hydrogel networks. Their macroporous structure, created via the time and resource efficient fabrication process (cryogelation) not only allows mass fluid transport throughout the structure, but also creates a high surface area to volume ratio for cell growth or drug loading. In addition, the macroporous structure of cryogels is ideal for applications in the central nervous system as they are very soft and spongey, yet also robust, which makes them a user-friendly and reproducible tool to address neuroscience challenges. In this review, we aim to provide the neuroscience community, who may not be familiar with the fundamental concepts of cryogels, an accessible summary of the basic information that pertain to their use in the brain and nervous tissue. We hope that this review shall initiate creative ways that cryogels could be further adapted and employed to tackle unsolved neuroscience challenges.
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Affiliation(s)
- Dimitri Eigel
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069, Dresden, Germany
| | - Carsten Werner
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069, Dresden, Germany; Technische Universität Dresden, Center for Regenerative Therapies Dresden, Dresden, Germany
| | - Ben Newland
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069, Dresden, Germany; School of Pharmacy and Pharmaceutical Sciences, Cardiff University, CF10 3NB, Cardiff, Wales, UK.
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15
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Kim S, Lee SS, Son B, Kim JA, Hwang NS, Park TH. Partially Digested Osteoblast Cell Line-Derived Extracellular Matrix Induces Rapid Mineralization and Osteogenesis. ACS Biomater Sci Eng 2021; 7:1134-1146. [PMID: 33523650 DOI: 10.1021/acsbiomaterials.0c01349] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An extracellular matrix (ECM) utilized as a biomaterial can be obtained from organs of living organisms. Therefore, it has some limitations in its supply because of insufficient organs. Furthermore, therapeutic efficacy of ECMs varies depending on factors such as donor's health condition and age. For this reason, ECMs obtained from a cell line could be a good alternative because they can be produced under a controlled environment with uniform quality. Thus, the purpose of this study was to investigate the potential of the MC3T3-E1 cell line-derived ECM as bone graft. The optimized decellularization process was developed to separate the ECM from MC3T3-E1, osteoblast cell line, using Trypsin-EDTA and Triton X-100. The decellularized ECM was partially digested using pepsin. Also, human bone marrow-derived mesenchymal stem cells induced faster osteogenesis on the ECM-coated surface than on the collagen-coated surface. Partially digested ECM fragments were embedded on the polyethylene glycol scaffold without additional chemical modification or crosslinking. Micro-computed tomography and histological analysis results showed that the ECM in the scaffold promoted actual bone regeneration after in vivo implantation to a mouse calvarial defect model. This study suggests that the bone-specific ECM derived from the cell line can replace the ECM from organs for application in tissue engineering and regenerative medicine.
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Affiliation(s)
- Seulha Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seunghun S Lee
- Interdisciplinary Program in Bioengineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Boram Son
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jeong Ah Kim
- Center for Scientific Instrumentation, Korea Basic Science Institute, Cheongju, Chungbuk 28119, Republic of Korea
| | - Nathaniel S Hwang
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.,Interdisciplinary Program in Bioengineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.,BioMAX/N-Bio Institute, Institute of BioEngineerig, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Tai Hyun Park
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.,Interdisciplinary Program in Bioengineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.,BioMAX/N-Bio Institute, Institute of BioEngineerig, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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16
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Widener AE, Bhatta M, Angelini TE, Phelps EA. Guest-host interlinked PEG-MAL granular hydrogels as an engineered cellular microenvironment. Biomater Sci 2021; 9:2480-2493. [PMID: 33432940 DOI: 10.1039/d0bm01499k] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We report the development of a polyethylene glycol (PEG) hydrogel scaffold that provides the advantages of conventional bulk PEG hydrogels for engineering cellular microenvironments and allows for rapid cell migration. PEG microgels were used to assemble a densely packed granular system with an intrinsic interstitium-like negative space. In this material, guest-host molecular interactions provide reversible non-covalent linkages between discrete PEG microgel particles to form a cohesive bulk material. In guest-host chemistry, different guest molecules reversibly and non-covalently interact with their cyclic host molecules. Two species of PEG microgels were made, each with one functional group at the end of the four arm PEG-MAL functionalized using thiol click chemistry. The first was functionalized with the host molecule β-cyclodextrin, a cyclic oligosaccharide of repeating d-glucose units, and the other functionalized with the guest molecule adamantane. These two species provide a reversible guest-host interaction between microgel particles when mixed, generating an interlinked network with a percolated interstitium. We showed that this granular configuration, unlike conventional bulk PEG hydrogels, enabled the rapid migration of THP-1 monocyte cells. The guest-host microgels also exhibited shear-thinning behavior, providing a unique advantage over current bulk PEG hydrogels.
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Affiliation(s)
- Adrienne E Widener
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA.
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17
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Masullo U, Cavallo A, Greco MR, Reshkin SJ, Mastrodonato M, Gallo N, Salvatore L, Verri T, Sannino A, Cardone RA, Madaghiele M. Semi-interpenetrating polymer network cryogels based on poly(ethylene glycol) diacrylate and collagen as potential off-the-shelf platforms for cancer cell research. J Biomed Mater Res B Appl Biomater 2021; 109:1313-1326. [PMID: 33427396 DOI: 10.1002/jbm.b.34792] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 12/23/2020] [Accepted: 12/27/2020] [Indexed: 01/09/2023]
Abstract
In the present work, we investigated the potential of novel semi-interpenetrating polymer network (semi-IPN) cryogels, obtained through ultraviolet exposure of aqueous mixtures of poly(ethylene glycol) diacrylate and type I collagen, as tunable off-the-shelf platforms for 3D cancer cell research. We synthesized semi-IPN cryogels with variable collagen amounts (0.1% and 1% w/v) and assessed the effect of collagen on key cryogel properties for cell culture, for example, porosity, degradation rate and mechanical stiffness. Then, we investigated the ability of the cryogels to sustain the long-term growth of two pancreatic ductal adenocarcinoma (PDAC) cell populations, the parenchymal Panc1 cells and their derived cancer stem cells. Results revealed that both cell lines efficiently infiltrated, attached and expanded in the cryogels over a period of 14 days. However, only when grown in the cryogels with the highest collagen concentration, both cell lines reproduced their characteristic growth pattern previously observed in collagen-enriched organotypic cultures, biomimetic of the highly fibrotic PDAC stroma. Cellular preembedding in Matrigel, that is, the classical approach to develop/grow organoids, interfered with an efficient intra-scaffold migration and growth. Although preliminary, these findings highlight the potential of the proposed cryogels as reproducible and tunable cancer cell research platforms.
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Affiliation(s)
- Ugo Masullo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Anna Cavallo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Maria Raffaella Greco
- Department of Bioscience, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
| | - Stephan J Reshkin
- Department of Bioscience, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
| | | | - Nunzia Gallo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Luca Salvatore
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Tiziano Verri
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Rosa Angela Cardone
- Department of Bioscience, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
| | - Marta Madaghiele
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
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18
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Velasco-Mallorquí F, Fernández-Costa JM, Neves L, Ramón-Azcón J. New volumetric CNT-doped gelatin-cellulose scaffolds for skeletal muscle tissue engineering. NANOSCALE ADVANCES 2020; 2:2885-2896. [PMID: 36132391 PMCID: PMC9418820 DOI: 10.1039/d0na00268b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 05/28/2020] [Indexed: 05/23/2023]
Abstract
Currently, the fabrication of scaffolds for engineered skeletal muscle tissues is unable to reach the millimeter size. The main drawbacks are the poor nutrient diffusion, lack of an internal structure to align the precursor cells, and poor mechanical and electric properties. Herein, we present a combination of gelatin-carboxymethyl cellulose materials polymerised by a cryogelation process that allowed us to reach scaffold fabrication up to millimeter size and solve the main problems related to the large size muscle tissue constructs. (1) By incorporating carbon nanotubes (CNT), we can improve the electrical properties of the scaffold, thereby enhancing tissue maturation when applying an electric pulse stimulus (EPS). (2) We have fabricated an anisotropic internal three-dimensional microarchitecture with good pore distribution and highly aligned morphology to enhance the cell alignment, cell fusion and myotube formation. With this set up, we were able to generate a fully functional skeletal muscle tissue using a combination of EPS and our doped-biocomposite scaffold and obtain a mature tissue on the millimeter scale. We also characterized the pore distribution, swelling, stiffness and conductivity of the scaffold. Moreover, we proved that the cells were viable and could fuse in three-dimensional (3D) functional myotubes throughout the scaffold. In conclusion, we fabricated a biocompatible and customizable scaffold for 3D cell culture suitable for a wide range of applications such as organ-on-a-chip, drug screening, transplantation and disease modelling.
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Affiliation(s)
- Ferran Velasco-Mallorquí
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST) Baldiri I Reixac 10-12 Barcelona Spain
| | - Juan M Fernández-Costa
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST) Baldiri I Reixac 10-12 Barcelona Spain
| | - Luisa Neves
- Multiwave Imaging, Hotel Technoptic 2 Rue Marc Donadille 13013 Marseille France
| | - Javier Ramón-Azcón
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST) Baldiri I Reixac 10-12 Barcelona Spain
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19
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Wang L, Dong S, Liu Y, Ma Y, Zhang J, Yang Z, Jiang W, Yuan Y. Fabrication of Injectable, Porous Hyaluronic Acid Hydrogel Based on an In-Situ Bubble-Forming Hydrogel Entrapment Process. Polymers (Basel) 2020; 12:E1138. [PMID: 32429363 PMCID: PMC7284757 DOI: 10.3390/polym12051138] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 01/07/2023] Open
Abstract
Injectable hydrogels have been widely applied in the field of regenerative medicine. However, current techniques for injectable hydrogels are facing a challenge when trying to generate a biomimetic, porous architecture that is well-acknowledged to facilitate cell behaviors. In this study, an injectable, interconnected, porous hyaluronic acid (HA) hydrogel based on an in-situ bubble self-generation and entrapment process was developed. Through an amide reaction between HA and cystamine dihydrochloride activated by EDC/NHS, CO2 bubbles were generated and were subsequently entrapped inside the substrate due to a rapid gelation-induced retention effect. HA hydrogels with different molecular weights and concentrations were prepared and the effects of the hydrogel precursor solution's concentration and viscosity on the properties of hydrogels were investigated. The results showed that HA10-10 (10 wt.%, MW 100,000 Da) and HA20-2.5 (2.5 wt.%, MW 200,000 Da) exhibited desirable gelation and obvious porous structure. Moreover, HA10-10 represented a high elastic modulus (32 kPa). According to the further in vitro and in vivo studies, all the hydrogels prepared in this study show favorable biocompatibility for desirable cell behaviors and mild host response. Overall, such an in-situ hydrogel with a self-forming bubble and entrapment strategy is believed to provide a robust and versatile platform to engineer injectable hydrogels for a variety of applications in tissue engineering, regenerative medicine, and personalized therapeutics.
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Affiliation(s)
- Lixuan Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education, and School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China; (L.W.); (Y.L.)
- Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
| | - Shiyan Dong
- Department of Radiation Oncology, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;
| | - Yutong Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, and School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China; (L.W.); (Y.L.)
- Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
| | - Yifan Ma
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA; (Y.M.); (J.Z.)
| | - Jingjing Zhang
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA; (Y.M.); (J.Z.)
| | - Zhaogang Yang
- Department of Radiation Oncology, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;
| | - Wen Jiang
- Department of Radiation Oncology, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;
| | - Yuan Yuan
- Key Laboratory for Ultrafine Materials of Ministry of Education, and School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China; (L.W.); (Y.L.)
- Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
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20
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Thakar H, Sebastian SM, Mandal S, Pople A, Agarwal G, Srivastava A. Biomolecule-Conjugated Macroporous Hydrogels for Biomedical Applications. ACS Biomater Sci Eng 2019; 5:6320-6341. [DOI: 10.1021/acsbiomaterials.9b00778] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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21
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Eigel D, Zoupi L, Sekizar S, Welzel PB, Werner C, Williams A, Newland B. Cryogel scaffolds for regionally constrained delivery of lysophosphatidylcholine to central nervous system slice cultures: A model of focal demyelination for multiple sclerosis research. Acta Biomater 2019; 97:216-229. [PMID: 31425890 DOI: 10.1016/j.actbio.2019.08.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 07/26/2019] [Accepted: 08/14/2019] [Indexed: 12/11/2022]
Abstract
The pathology of multiple sclerosis (MS) is typified by focal demyelinated areas of the brain and spinal cord, which results in axonal degeneration and atrophy. Although the field has made much progress in developing immunomodulatory therapies to reduce the occurrence of these focal lesions, there is a conspicuous lack of licensed effective therapies to reduce axonal degeneration or promote repair. Remyelination, carried out by oligodendrocytes, does occur in MS, and is protective against axonal degeneration. Unfortunately, remyelination is not very efficient, and ultimately fails and so there is a research focus to generate new therapeutics to enhance remyelination leading to neuroprotection. To develop these therapies, we need preclinical models that well reflect remyelination in MS. We have previously characterized an ex vivo model that uses lysophosphatidylcholine (LPC) to cause acute and global demyelination of tissue slices, followed by spontaneous remyelination, which has been widely used as a surrogate for in vivo rodent models of demyelination. However, this ex vivo model lacks the focal demyelinated lesions seen in MS, surrounded by normal tissue from which the repairing oligodendrocytes are derived. Therefore, to improve the model, we have developed and characterized small macroporous cryogel scaffolds for controlled/regional delivery of LPC with diameters of either 0.5, 1 or 2 mm. Placement of LPC loaded scaffolds adjacent to ex vivo cultured mouse brain and spinal cord slices induced focal areas of demyelination in proximity to the scaffold. To the best of our knowledge, this is the first such report of spatial mimicry of the in vivo condition in ex vivo tissue culture. This will allow not only the investigation into focal lesions, but also provides a better platform technology with which to test remyelination-promoting therapeutics. STATEMENT OF SIGNIFICANCE: This manuscript is the first report of using macroporous hydrogels (cryogels) as a research tool for lysophosphatidylcholine (LPC) delivery, in order to create an ex vivo model of focal demyelination in the brain and spinal cord, which is of great relevance to multiple sclerosis research. Here, we transform an existing ex vivo model of demyelination by delivering LPC to focal regions of brain and spinal cord slice cultures. We have developed an easy-to-handle cylindrical and macroporous PEG-based sponge-like scaffold material (cryogel) that can deliver LPC only to a small area of the slice. Such cryogels are ideal as a delivery system in this culture model as they exhibit a soft but robust nature, with high mechanical deformability in their dry and swollen state, with no need to stay permanently hydrated. In addition, the synthesis of these cryogels is simple and easy to reproduce via photochemical cryopolymerisation using a PEG-diacrylate monomer and a photoinitiator, which are both commercially available. This more accurate model of demyelination will not only allow researchers to gain a better understanding of the CNS remyelination process in diseases such as MS, but also provides a platform technology, which could be utilized to screen and test pro-remyelination compounds which may help to find new therapeutics for progressive MS.
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Affiliation(s)
- Dimitri Eigel
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
| | - Lida Zoupi
- MRC-Centre for Regenerative Medicine, University of Edinburgh, Edinburgh BioQuarter, 5 Little France Drive, EH16 4UU Edinburgh, UK
| | - Sowmya Sekizar
- MRC-Centre for Regenerative Medicine, University of Edinburgh, Edinburgh BioQuarter, 5 Little France Drive, EH16 4UU Edinburgh, UK
| | - Petra B Welzel
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
| | - Carsten Werner
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany
| | - Anna Williams
- MRC-Centre for Regenerative Medicine, University of Edinburgh, Edinburgh BioQuarter, 5 Little France Drive, EH16 4UU Edinburgh, UK.
| | - Ben Newland
- Leibniz-Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials Dresden, Hohe Straße 6, D-01069 Dresden, Germany; School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Redwood Building, King Edward VII Avenue, Cardiff CF10 3NB, UK.
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22
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Thorson TJ, Gurlin RE, Botvinick EL, Mohraz A. Bijel-templated implantable biomaterials for enhancing tissue integration and vascularization. Acta Biomater 2019; 94:173-182. [PMID: 31233892 DOI: 10.1016/j.actbio.2019.06.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 05/29/2019] [Accepted: 06/19/2019] [Indexed: 12/19/2022]
Abstract
Mitigation of the foreign body response (FBR) and successful tissue integration are essential to ensuring the longevity of implanted devices and biomaterials. The use of porous materials and coatings has been shown to have an impact, as the textured surfaces can mediate macrophage interactions with the implant and influence the FBR, and the pores can provide space for vascularization and tissue integration. In this study, we use a new class of implantable porous biomaterials templated from bicontinuous interfacially jammed emulsion gels (bijels), which offer a fully percolating, non-constricting porous network with a uniform pore diameter on the order of tens of micrometers, and surfaces with consistent curvature. We demonstrate that these unique morphological features, inherent to bijel-templated materials (BTMs), can enhance tissue integration and vascularization, and reduce the FBR. Cylindrical polyethylene glycol diacrylate (PEGDA) BTMs, along with PEGDA particle-templated materials (PTMs), and non-templated materials (NTMs), were implanted into the subcutaneous space of athymic nude mice. After 28 days, implants were retrieved and analyzed via histological techniques. Within BTMs, blood vessels of increased size and depth, changes in collagen deposition, and increased presence of pro-healing macrophages were observed compared to that of PTM and NTM implants. Bijel templating offers a new route to biomaterials that can improve the function and longevity of implantable devices. STATEMENT OF SIGNIFICANCE: All implanted biomaterials are subject to the foreign body response (FBR) which can have a detrimental effect on their efficacy. Altering the surface chemistry can decrease the FBR by limiting the amount of proteins adsorbed to the implant. This effect can be enhanced by including pores in the biomaterial to allow new tissue growth as the implant becomes integrated in the body. Here, we introduce a new class of self-assembled biomaterials comprising a fully penetrating, non-constricting pore phase with hyperbolic (saddle) surfaces for enhanced tissue integration. These unique morphological characteristics result in dense blood vessel formation and favorable tissue response properties demonstrated in a four-week implantation study.
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23
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Lotfipour F, Alami-Milani M, Salatin S, Hadavi A, Jelvehgari M. Freeze-thaw-induced cross-linked PVA/chitosan for oxytetracycline-loaded wound dressing: the experimental design and optimization. Res Pharm Sci 2019; 14:175-189. [PMID: 31620194 PMCID: PMC6791175 DOI: 10.4103/1735-5362.253365] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Oxytetracycline is an antibiotic for the treatment of the infections caused by Gram-positive and Gram-negative microorganisms. Among novel formulations applied for damaged skin, hydrogels have shown to be superior as they can provide a moist environment for the wound. The purpose of this study was to prepare and evaluate the hydrogels of oxytetracycline consisted of polyvinyl alcohol (PVA) and chitosan polymers. A study design based on 4 factors and 3 levels was used for the preparation and evaluation of hydrogels formed by freeze-thaw (F-T) cycle using PVA and chitosan as a matrix-based wound dressing system. Furthermore, an experimental design was employed in order to study the effect of independent variables, namely drug amount (X1, 500-1000 mg), the amount of PVA (X2, 3.33-7.5%), the amount of chitosan (X3, 0.5-1%), and F-T cycle (X4, 3-7 cycles) on the dependent variables, including encapsulation efficiency, swelling index, adsorption of protein onto hydrogel surface, and skin permeation. The interaction of formulation variables had a significant effect on both physicochemical properties and permeation. Hydrogel microbial tests with sequential dilution method in Muller-Hinton broth medium were also carried out. The selected hydrogel (F6) containing 5% PVA, 0.75% chitosan, 1000 mg drug, and 3 F-T cycles was found to have increased encapsulation efficiency, gel strength, and higher skin permeation suitable for faster healing of wounds. Results showed the biological stability of oxytetracycline HCl in the hydrogel formulation with a lower dilution of the pure drug. Thus, oxytetracycline-loaded hydrogel could be a potential candidate to be used as a wound dressing system.
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Affiliation(s)
- Farzaneh Lotfipour
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, I.R. Iran.,Department of Pharmaceutical and Food Control, Faculty of Pharmacy, Tabriz University of Medical Sciences Tabriz, I.R. Iran
| | - Mitra Alami-Milani
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, I.R. Iran.,Student Research Committee, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Sara Salatin
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, I.R. Iran.,Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Aylin Hadavi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Mitra Jelvehgari
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, I.R. Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
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24
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Shrimali P, Peter M, Singh A, Dalal N, Dakave S, Chiplunkar SV, Tayalia P. Efficient in situ gene delivery via PEG diacrylate matrices. Biomater Sci 2019; 6:3241-3250. [PMID: 30334035 DOI: 10.1039/c8bm00916c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
For diseases related to genetic disorders or cancer, many cellular therapies rely on the ex vivo modification of cells for attaining a desired therapeutic effect. The efficacy of such therapies involving the genetic modification of cells relies on the extent of gene expression and subsequent persistence of modified cells when infused into the patient's body. In situ gene delivery implies the manipulation of cells in their in vivo niche such that the effectiveness can be improved by minimizing post manipulation effects like cell death, lack of persistence, etc. Furthermore, material-based in situ localized gene delivery can reduce the undesired side effects caused by systemic modifications. Here, we have used polyethylene (glycol) diacrylate (PEGDA) based cryogels to genetically modify cells in vivo with a focus on immunotherapy. PEGDA cryogels were either blended with gelatin methacrylate (GELMA) or surface modified with poly-l-lysine (PLL) in order to improve cell adhesion and/or retain viruses for localized gene delivery. On using the lentiviruses encoding gene for green fluorescent protein (GFP) in in vitro experiments, we found higher transduction efficiency in HEK 293FT cells via PEGDA modified with poly-l-lysine (PEGDA-PLL) and PEGDA-GELMA cryogels compared to PEGDA cryogels. In vitro release experiments showed improved retention of GFP lentiviruses in PEGDA-PLL cryogels, which were then employed for in vivo gene delivery and were demonstrated to perform better than the corresponding bolus delivery of lentiviruses through an injection. Both physical and biological characterization studies of these cryogels show that this material platform can be used for gene delivery as well as other tissue engineering applications.
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Affiliation(s)
- Paresh Shrimali
- Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India.
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25
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Bray LJ, Secker C, Murekatete B, Sievers J, Binner M, Welzel PB, Werner C. Three-Dimensional In Vitro Hydro- and Cryogel-Based Cell-Culture Models for the Study of Breast-Cancer Metastasis to Bone. Cancers (Basel) 2018; 10:cancers10090292. [PMID: 30150545 PMCID: PMC6162532 DOI: 10.3390/cancers10090292] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 11/16/2022] Open
Abstract
Bone is the most common site for breast-cancer invasion and metastasis, and it causes severe morbidity and mortality. A greater understanding of the mechanisms leading to bone-specific metastasis could improve therapeutic strategies and thus improve patient survival. While three-dimensional in vitro culture models provide valuable tools to investigate distinct heterocellular and environmental interactions, sophisticated organ-specific metastasis models are lacking. Previous models used to investigate breast-to-bone metastasis have relied on 2.5D or singular-scaffold methods, constraining the in situ mimicry of in vitro models. Glycosaminoglycan-based gels have demonstrated outstanding potential for tumor-engineering applications. Here, we developed advanced biphasic in vitro microenvironments that mimic breast-tumor tissue (MCF-7 and MDA-MB-231 in a hydrogel) spatially separated with a mineralized bone construct (human primary osteoblasts in a cryogel). These models allow distinct advantages over former models due to the ability to observe and manipulate cellular migration towards a bone construct. The gels allow for the binding of adhesion-mediating peptides and controlled release of signaling molecules. Moreover, mechanical and architectural properties can be tuned to manipulate cell function. These results demonstrate the utility of these biomimetic microenvironment models to investigate heterotypic cell⁻cell and cell⁻matrix communications in cancer migration to bone.
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Affiliation(s)
- Laura J Bray
- Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), 60 Musk Avenue, Kelvin Grove 4059, Australia.
- Centre in Regenerative Medicine, Queensland University of Technology (QUT), 60 Musk Avenue, Kelvin Grove 4059, Australia.
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology (QUT), 2 George Street, Brisbane 4001, Australia.
- Translational Research Institute, Mater Research Institute-University of Queensland, 37 Kent Street, Woolloongabba 4102, Australia.
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials, Hohe Straβe 6, 01069 Dresden, Germany.
| | - Constanze Secker
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials, Hohe Straβe 6, 01069 Dresden, Germany.
| | - Berline Murekatete
- Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), 60 Musk Avenue, Kelvin Grove 4059, Australia.
- Centre in Regenerative Medicine, Queensland University of Technology (QUT), 60 Musk Avenue, Kelvin Grove 4059, Australia.
| | - Jana Sievers
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials, Hohe Straβe 6, 01069 Dresden, Germany.
| | - Marcus Binner
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials, Hohe Straβe 6, 01069 Dresden, Germany.
| | - Petra B Welzel
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials, Hohe Straβe 6, 01069 Dresden, Germany.
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials, Hohe Straβe 6, 01069 Dresden, Germany.
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstraβe 105, 01307 Dresden, Germany.
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26
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Wang J, Yang H. Superelastic and pH-Responsive Degradable Dendrimer Cryogels Prepared by Cryo-aza-Michael Addition Reaction. Sci Rep 2018; 8:7155. [PMID: 29740011 PMCID: PMC5940921 DOI: 10.1038/s41598-018-25456-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 04/11/2018] [Indexed: 12/15/2022] Open
Abstract
Dendrimers exhibit super atomistic features by virtue of their well-defined discrete quantized nanoscale structures. Here, we show that hyperbranched amine-terminated polyamidoamine (PAMAM) dendrimer G4.0 reacts with linear polyethylene glycol (PEG) diacrylate (575 g/mol) via the aza-Michael addition reaction at a subzero temperature (-20 °C), namely cryo-aza-Michael addition, to form a macroporous superelastic network, i.e., dendrimer cryogel. Dendrimer cryogels exhibit biologically relevant Young's modulus, high compression elasticity and super resilience at ambient temperature. Furthermore, the dendrimer cryogels exhibit excellent rebound performance and do not show significant stress relaxation under cyclic deformation over a wide temperature range (-80 to 100 °C). The obtained dendrimer cryogels are stable at acidic pH but degrade quickly at physiological pH through self-triggered degradation. Taken together, dendrimer cryogels represent a new class of scaffolds with properties suitable for biomedical applications.
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Affiliation(s)
- Juan Wang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia, 23219, United States
| | - Hu Yang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia, 23219, United States. .,Department of Pharmaceutics, Virginia Commonwealth University, Richmond, Virginia, 23298, United States. .,Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia, 23298, United States.
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27
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Kim I, Lee SS, Bae S, Lee H, Hwang NS. Heparin Functionalized Injectable Cryogel with Rapid Shape-Recovery Property for Neovascularization. Biomacromolecules 2018; 19:2257-2269. [PMID: 29689163 DOI: 10.1021/acs.biomac.8b00331] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cryogel based scaffolds have high porosity with interconnected macropores that may provide cell compatible microenvironment. In addition, cryogel based scaffolds can be utilized in minimally invasive surgery due to its sponge-like properties, including rapid shape recovery and injectability. Herein, we developed an injectable cryogel by conjugating heparin to gelatin as a carrier for vascular endothelial growth factor (VEGF) and fibroblasts in hindlimb ischemic disease. Our gelatin/heparin cryogel showed gelatin concentration-dependent mechanical properties, swelling ratios, interconnected porosities, and elasticities. In addition, controlled release of VEGF led to effective angiogenic responses both in vitro and in vivo. Furthermore, its sponge-like properties enabled cryogels to be applied as an injectable carrier system for in vivo cells and growth factor delivery. Our heparin functionalized injectable cryogel facilitated the angiogenic potential by facilitating neovascularization in a hindlimb ischemia model.
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Affiliation(s)
- Inseon Kim
- School of Chemical and Biological Engineering, the Institute of Chemical Processes , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Seunghun S Lee
- Interdisciplinary Program in Bioengineering , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Sunghoon Bae
- School of Chemical and Biological Engineering, the Institute of Chemical Processes , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Hoyon Lee
- School of Chemical and Biological Engineering, the Institute of Chemical Processes , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Nathaniel S Hwang
- School of Chemical and Biological Engineering, the Institute of Chemical Processes , Seoul National University , Seoul , 08826 , Republic of Korea.,Interdisciplinary Program in Bioengineering , Seoul National University , Seoul , 08826 , Republic of Korea.,BioMAX/N-Bio Institute , Seoul National University , Seoul , 08826 , Republic of Korea
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28
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Rnjak‐Kovacina J, Tang F, Whitelock JM, Lord MS. Glycosaminoglycan and Proteoglycan-Based Biomaterials: Current Trends and Future Perspectives. Adv Healthc Mater 2018; 7:e1701042. [PMID: 29210510 DOI: 10.1002/adhm.201701042] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/18/2017] [Indexed: 12/18/2022]
Abstract
Proteoglycans and their glycosaminoglycans (GAG) are essential for life as they are responsible for orchestrating many essential functions in development and tissue homeostasis, including biophysical properties and roles in cell signaling and extracellular matrix assembly. In an attempt to capture these biological functions, a range of biomaterials are designed to incorporate off-the-shelf GAGs, typically isolated from animal sources, for tissue engineering, drug delivery, and regenerative medicine applications. All GAGs, with the exception of hyaluronan, are present in the body covalently coupled to the protein core of proteoglycans, yet the incorporation of proteoglycans into biomaterials remains relatively unexplored. Proteoglycan-based biomaterials are more likely to recapitulate the unique, tissue-specific GAG profiles and native GAG presentation in human tissues. The protein core offers additional biological functionality, including cell, growth factor, and extracellular matrix binding domains, as well as sites for protein immobilization chemistries. Finally, proteoglycans can be recombinantly expressed in mammalian cells and thus offer genetic manipulation and metabolic engineering opportunities for control over the protein and GAG structures and functions. This Progress Report summarizes current developments in GAG-based biomaterials and presents emerging research and future opportunities for the development of biomaterials that incorporate GAGs presented in their native proteoglycan form.
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Affiliation(s)
| | - Fengying Tang
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
| | - John M. Whitelock
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
| | - Megan S. Lord
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
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29
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Abstract
Numerous processing techniques aim to impart interconnected, porous structures within regenerative medicine materials to support cell delivery and direct tissue growth. Many of these techniques lack predictable control of scaffold architecture, and rapid prototyping methods are often limited by time-consuming, layer-by-layer fabrication of micro-features. Bicontinuous interfacially jammed emulsion gels (bijels) offer a robust, self-assembly-based platform for synthesizing a new class of morphologically unique cell delivery biomaterials. Bijels form via kinetic arrest of temperature-driven spinodal decomposition in partially miscible binary liquid systems. These non-equilibrium soft materials are comprised of co-continuous, fully percolating, non-constricting liquid domains separated by a nanoparticle monolayer. Through the selective introduction of biocompatible precursors, hydrogel scaffolds displaying the morphological characteristics of the parent bijel can be formed. We report using bijel templating to generate structurally unique, fibrin-loaded polyethylene glycol hydrogel composites. Demonstration of composite bijel-templated hydrogels (CBiTHs) as a new cell delivery system was carried out in vitro using fluorescence-based tracking of cells delivered to previously acellular fibrin gels. Imaging analysis confirmed repeatable delivery of normal human dermal fibroblasts to acellular fibrin gels.
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Affiliation(s)
- Todd J. Thorson
- Department of Chemical Engineering and Materials Science, University of California, Irvine, CA 92697, USA
| | - Elliot L. Botvinick
- Department of Biomedical Engineering, University of California, Irvine, CA 92697, USA
| | - Ali Mohraz
- Department of Chemical Engineering and Materials Science, University of California, Irvine, CA 92697, USA
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30
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Bachmann D, Aliperta R, Bergmann R, Feldmann A, Koristka S, Arndt C, Loff S, Welzel P, Albert S, Kegler A, Ehninger A, Cartellieri M, Ehninger G, Bornhäuser M, von Bonin M, Werner C, Pietzsch J, Steinbach J, Bachmann M. Retargeting of UniCAR T cells with an in vivo synthesized target module directed against CD19 positive tumor cells. Oncotarget 2017; 9:7487-7500. [PMID: 29484126 PMCID: PMC5800918 DOI: 10.18632/oncotarget.23556] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 10/27/2017] [Indexed: 01/08/2023] Open
Abstract
Recent treatments of leukemias with T cells expressing chimeric antigen receptors (CARs) underline their impressive therapeutic potential but also their risk of severe side effects including cytokine release storms and tumor lysis syndrome. In case of cross-reactivities, CAR T cells may also attack healthy tissues. To overcome these limitations, we previously established a switchable CAR platform technology termed UniCAR. UniCARs are not directed against typical tumor-associated antigens (TAAs) but instead against a unique peptide epitope: Fusion of this peptide epitope to a recombinant antibody domain results in a target module (TM). TMs can cross-link UniCAR T cells with tumor cells and thereby lead to their destruction. So far, we constructed TMs with a short half-life. The fast turnover of such a TM allows to rapidly interrupt the treatment in case severe side effects occur. After elimination of most of the tumor cells, however, longer lasting TMs which have not to be applied via continous infusion would be more convenient for the patient. Here we describe and characterize a TM for retargeting UniCAR T cells to CD19 positive tumor cells. Moreover, we show that the TM can efficiently be produced in vivo from producer cells housed in a sponge-like biomimetic cryogel and, thereby, serving as an in vivo TM factory for an extended retargeting of UniCAR T cells to CD19 positive leukemic cells.
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Affiliation(s)
- Dominik Bachmann
- University Cancer Center, Carl Gustav Carus TU Dresden, Tumor Immunology, Dresden, Germany
| | - Roberta Aliperta
- University Cancer Center, Carl Gustav Carus TU Dresden, Tumor Immunology, Dresden, Germany
| | - Ralf Bergmann
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | - Anja Feldmann
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | - Stefanie Koristka
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | - Claudia Arndt
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | - Simon Loff
- GEMoaB Monoclonals GmbH, Dresden, Germany
| | - Petra Welzel
- Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Susann Albert
- University Cancer Center, Carl Gustav Carus TU Dresden, Tumor Immunology, Dresden, Germany
| | - Alexandra Kegler
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | | | | | - Gerhard Ehninger
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany.,German Cancer Consortium, Carl Gustav Carus TU Dresden, Dresden, Germany.,National Center for Tumor Diseases, Dresden, Carl Gustav Carus TU Dresden, Dresden, Germany
| | - Martin Bornhäuser
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany.,German Cancer Consortium, Carl Gustav Carus TU Dresden, Dresden, Germany.,National Center for Tumor Diseases, Dresden, Carl Gustav Carus TU Dresden, Dresden, Germany
| | - Malte von Bonin
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Jens Pietzsch
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany.,Department of Chemistry and Food Chemistry, School of Science, TU Dresden, Dresden, Germany
| | - Jörg Steinbach
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany.,German Cancer Consortium, Carl Gustav Carus TU Dresden, Dresden, Germany.,National Center for Tumor Diseases, Dresden, Carl Gustav Carus TU Dresden, Dresden, Germany.,Department of Chemistry and Food Chemistry, School of Science, TU Dresden, Dresden, Germany
| | - Michael Bachmann
- University Cancer Center, Carl Gustav Carus TU Dresden, Tumor Immunology, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany.,German Cancer Consortium, Carl Gustav Carus TU Dresden, Dresden, Germany.,National Center for Tumor Diseases, Dresden, Carl Gustav Carus TU Dresden, Dresden, Germany
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31
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In situ formation of injectable and porous heparin-based hydrogel. Carbohydr Polym 2017; 174:990-998. [DOI: 10.1016/j.carbpol.2017.06.126] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 06/13/2017] [Accepted: 06/30/2017] [Indexed: 01/12/2023]
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32
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Cryogel-supported stem cell factory for customized sustained release of bispecific antibodies for cancer immunotherapy. Sci Rep 2017; 7:42855. [PMID: 28205621 PMCID: PMC5311951 DOI: 10.1038/srep42855] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 01/18/2017] [Indexed: 12/21/2022] Open
Abstract
Combining stem cells with biomaterial scaffolds provides a promising strategy for the development of drug delivery systems. Here we propose an innovative immunotherapeutic organoid by housing human mesenchymal stromal cells (MSCs), gene-modified for the secretion of an anti-CD33-anti-CD3 bispecific antibody (bsAb), in a small biocompatible star-shaped poly(ethylene glycol)-heparin cryogel scaffold as a transplantable and low invasive therapeutic machinery for the treatment of acute myeloid leukemia (AML). The macroporous biohybrid cryogel platform displays effectiveness in supporting proliferation and survival of bsAb-releasing-MSCs overtime in vitro and in vivo, avoiding cell loss and ensuring a constant release of sustained and detectable levels of bsAb capable of triggering T-cell-mediated anti-tumor responses and a rapid regression of CD33+ AML blasts. This therapeutic device results as a promising and safe alternative to the continuous administration of short-lived immunoagents and paves the way for effective bsAb-based therapeutic strategies for future tumor treatments.
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Macroporous biohybrid cryogels for co-housing pancreatic islets with mesenchymal stromal cells. Acta Biomater 2016; 44:178-87. [PMID: 27506126 DOI: 10.1016/j.actbio.2016.08.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 07/19/2016] [Accepted: 08/05/2016] [Indexed: 01/11/2023]
Abstract
UNLABELLED Intrahepatic transplantation of allogeneic pancreatic islets offers a promising therapy for type 1 diabetes. However, long-term insulin independency is often not achieved due to severe islet loss shortly after transplantation. To improve islet survival and function, extrahepatic biomaterial-assisted transplantation of pancreatic islets to alternative sites has been suggested. Herein, we present macroporous, star-shaped poly(ethylene glycol) (starPEG)-heparin cryogel scaffolds, covalently modified with adhesion peptides, for the housing of pancreatic islets in three-dimensional (3D) co-culture with adherent mesenchymal stromal cells (MSC) as accessory cells. The implantable biohybrid scaffolds provide efficient transport properties, mechanical protection, and a supportive extracellular environment as a desirable niche for the islets. MSC colonized the cryogel scaffolds and produced extracellular matrix proteins that are important components of the natural islet microenvironment known to facilitate matrix-cell interactions and to prevent cellular stress. Islets survived the seeding procedure into the cryogel scaffolds and secreted insulin after glucose stimulation in vitro. In a rodent model, intact islets and MSC could be visualized within the scaffolds seven days after subcutaneous transplantation. Overall, this demonstrates the potential of customized macroporous starPEG-heparin cryogel scaffolds in combination with MSC to serve as a multifunctional islet supportive carrier for transplantation applications. STATEMENT OF SIGNIFICANCE Diabetes results in the insufficient production of insulin by the pancreatic β-cells in the islets of Langerhans. Transplantation of pancreatic islets offers valuable options for treating the disease; however, many transplanted islets often do not survive the transplantation or die shortly thereafter. Co-transplanted, supporting cells and biomaterials can be instrumental for improving islet survival, function and protection from the immune system. In the present study, islet supportive hydrogel sponges were explored for the co-transplantation of islets and mesenchymal stromal cells. Survival and continued function of the supported islets were demonstrated in vitro. The in vivo feasibility of the approach was shown by transplantation in a mouse model.
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Freudenberg U, Liang Y, Kiick KL, Werner C. Glycosaminoglycan-Based Biohybrid Hydrogels: A Sweet and Smart Choice for Multifunctional Biomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:8861-8891. [PMID: 27461855 PMCID: PMC5152626 DOI: 10.1002/adma.201601908] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 05/30/2016] [Indexed: 05/12/2023]
Abstract
Glycosaminoglycans (GAGs) govern important functional characteristics of the extracellular matrix (ECM) in living tissues. Incorporation of GAGs into biomaterials opens up new routes for the presentation of signaling molecules, providing control over development, homeostasis, inflammation, and tumor formation and progression. Recent approaches to GAG-based materials are reviewed, highlighting the formation of modular, tunable biohybrid hydrogels by covalent and non-covalent conjugation schemes, including both theory-driven design concepts and advanced processing technologies. Examples of the application of the resulting materials in biomedical studies are provided. For perspective, solid-phase and chemoenzymatic oligosaccharide synthesis methods for GAG-derived motifs, rational and high-throughput design strategies for GAG-based materials, and the utilization of the factor-scavenging characteristics of GAGs are highlighted.
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Affiliation(s)
- Uwe Freudenberg
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC), Technische Universität Dresden, Center for Regenerative Therapies Dresden (CRTD), Hohe Str. 6, 01069 Dresden, Germany
| | - Yingkai Liang
- Department of Materials Science and Engineering and Department of Biomedical Engineering, University of Delaware, Newark, Delaware 19716, United States,
| | - Kristi L. Kiick
- Department of Materials Science and Engineering and Department of Biomedical Engineering, University of Delaware, Newark, Delaware 19716, United States and Delaware Biotechnology Institute, 15 Innovation Way, Newark, Delaware 19716, United States
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC), Technische Universität Dresden, Center for Regenerative Therapies Dresden (CRTD), Hohe Str. 6, 01069 Dresden, Germany
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Shirbin SJ, Karimi F, Chan NJA, Heath DE, Qiao GG. Macroporous Hydrogels Composed Entirely of Synthetic Polypeptides: Biocompatible and Enzyme Biodegradable 3D Cellular Scaffolds. Biomacromolecules 2016; 17:2981-91. [DOI: 10.1021/acs.biomac.6b00817] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Steven J. Shirbin
- Polymer Science Group, Department of Chemical
and Biomolecular Engineering, and §Department of Chemical
and Biomolecular Engineering, University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia
| | - Fatemeh Karimi
- Polymer Science Group, Department of Chemical
and Biomolecular Engineering, and §Department of Chemical
and Biomolecular Engineering, University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia
| | - Nicholas Jun-An Chan
- Polymer Science Group, Department of Chemical
and Biomolecular Engineering, and §Department of Chemical
and Biomolecular Engineering, University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia
| | - Daniel E. Heath
- Polymer Science Group, Department of Chemical
and Biomolecular Engineering, and §Department of Chemical
and Biomolecular Engineering, University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia
| | - Greg G. Qiao
- Polymer Science Group, Department of Chemical
and Biomolecular Engineering, and §Department of Chemical
and Biomolecular Engineering, University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia
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Poster Presentations. Regen Med 2015; 10:S96-S296. [PMID: 26488890 DOI: 10.2217/rme.15.73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Newland B, Welzel PB, Newland H, Renneberg C, Kolar P, Tsurkan M, Rosser A, Freudenberg U, Werner C. Tackling Cell Transplantation Anoikis: An Injectable, Shape Memory Cryogel Microcarrier Platform Material for Stem Cell and Neuronal Cell Growth. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5047-53. [PMID: 26237446 PMCID: PMC5656175 DOI: 10.1002/smll.201500898] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 06/03/2015] [Indexed: 05/19/2023]
Abstract
Highly macroporous semisynthetic cryogel microcarriers can be synthesized for culturing stem cells and neuronal type cells. Growth factors loaded to heparin-containing microcarriers show near zero-order release kinetics and cell-loaded microcarriers can be injected through a fine gauge cannula without negative effect on the cells. These carriers can be applied for cell transplantation applications.
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Affiliation(s)
- Ben Newland
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany; Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, Wales, UK
| | - Petra B. Welzel
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Heike Newland
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Claudia Renneberg
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Petr Kolar
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Mikhail Tsurkan
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Anne Rosser
- Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, Wales, UK
| | - Uwe Freudenberg
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden (CRTD) Hohe Str. 6, 01069 Dresden, Germany
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Sanami M, Sweeney I, Shtein Z, Meirovich S, Sorushanova A, Mullen AM, Miraftab M, Shoseyov O, O'Dowd C, Pandit A, Zeugolis DI. The influence of poly(ethylene glycol) ether tetrasuccinimidyl glutarate on the structural, physical, and biological properties of collagen fibers. J Biomed Mater Res B Appl Biomater 2015; 104:914-22. [DOI: 10.1002/jbm.b.33445] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/17/2015] [Accepted: 04/18/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Mohammad Sanami
- Vornia Biomaterials Ltd.; Galway Ireland
- Institute of Materials Research and Innovation, University of Bolton; Bolton UK
| | - India Sweeney
- Vornia Biomaterials Ltd.; Galway Ireland
- Institute of Materials Research and Innovation, University of Bolton; Bolton UK
| | - Zvi Shtein
- Vornia Biomaterials Ltd.; Galway Ireland
- Robert H. Smith Faculty of Agriculture; Food and Environment; The Hebrew University of Jerusalem; Jerusalem Israel
| | - Sigal Meirovich
- Vornia Biomaterials Ltd.; Galway Ireland
- Robert H. Smith Faculty of Agriculture; Food and Environment; The Hebrew University of Jerusalem; Jerusalem Israel
| | - Anna Sorushanova
- Regenerative; Modular and Developmental Engineering Laboratory (REMODEL); Biosciences Research Building, National University of Ireland Galway (NUI Galway); Galway Ireland
- Network of Excellence for Functional Biomaterials (NFB), Biosciences Research Building, National University of Ireland Galway (NUI Galway); Galway Ireland
- CURAM-Centre for Research in Medical Devices, Biosciences Research Building, National University of Ireland Galway (NUI Galway); Galway Ireland
| | | | - Mohsen Miraftab
- Vornia Biomaterials Ltd.; Galway Ireland
- Institute of Materials Research and Innovation, University of Bolton; Bolton UK
| | - Oded Shoseyov
- Robert H. Smith Faculty of Agriculture; Food and Environment; The Hebrew University of Jerusalem; Jerusalem Israel
| | | | - Abhay Pandit
- Network of Excellence for Functional Biomaterials (NFB), Biosciences Research Building, National University of Ireland Galway (NUI Galway); Galway Ireland
- CURAM-Centre for Research in Medical Devices, Biosciences Research Building, National University of Ireland Galway (NUI Galway); Galway Ireland
| | - Dimitrios I. Zeugolis
- Regenerative; Modular and Developmental Engineering Laboratory (REMODEL); Biosciences Research Building, National University of Ireland Galway (NUI Galway); Galway Ireland
- Network of Excellence for Functional Biomaterials (NFB), Biosciences Research Building, National University of Ireland Galway (NUI Galway); Galway Ireland
- CURAM-Centre for Research in Medical Devices, Biosciences Research Building, National University of Ireland Galway (NUI Galway); Galway Ireland
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Wieduwild R, Krishnan S, Chwalek K, Boden A, Nowak M, Drechsel D, Werner C, Zhang Y. Noncovalent Hydrogel Beads as Microcarriers for Cell Culture. Angew Chem Int Ed Engl 2015; 54:3962-6. [DOI: 10.1002/anie.201411400] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Indexed: 12/11/2022]
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42
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Wieduwild R, Krishnan S, Chwalek K, Boden A, Nowak M, Drechsel D, Werner C, Zhang Y. Noncovalent Hydrogel Beads as Microcarriers for Cell Culture. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411400] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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43
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Simona BR, Hirt L, Demkó L, Zambelli T, Vörös J, Ehrbar M, Milleret V. Density gradients at hydrogel interfaces for enhanced cell penetration. Biomater Sci 2015. [DOI: 10.1039/c4bm00416g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Interfacial crosslinking density gradients represent a simple strategy to overcome the challenge of the limited penetration of cells seeded on the surface of hydrogels. The strategy here-presented can be used both when cells need to be seeded after hydrogel processing and to enable cell migration through hydrogel elements additively manufactured.
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Affiliation(s)
- B. R. Simona
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- University and ETH Zurich
- Zurich
- Switzerland
| | - L. Hirt
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- University and ETH Zurich
- Zurich
- Switzerland
| | - L. Demkó
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- University and ETH Zurich
- Zurich
- Switzerland
| | - T. Zambelli
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- University and ETH Zurich
- Zurich
- Switzerland
| | - J. Vörös
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- University and ETH Zurich
- Zurich
- Switzerland
| | - M. Ehrbar
- Laboratory for Cell and Tissue Engineering
- Department of Obstetrics
- University Hospital Zurich
- 8091 Zurich
- Switzerland
| | - V. Milleret
- Laboratory for Cell and Tissue Engineering
- Department of Obstetrics
- University Hospital Zurich
- 8091 Zurich
- Switzerland
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Welzel PB, Friedrichs J, Grimmer M, Vogler S, Freudenberg U, Werner C. Cryogel micromechanics unraveled by atomic force microscopy-based nanoindentation. Adv Healthc Mater 2014; 3:1849-53. [PMID: 24729299 DOI: 10.1002/adhm.201400102] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 03/18/2014] [Indexed: 11/12/2022]
Abstract
Cell-instructive physical characteristics of macroporous scaffolds, developed for tissue engineering applications, often remain difficult to assess. Here, an atomic force microscopy-based nanoindentation approach is adapted to quantify the local mechanical properties of biohybrid glycosaminoglycan-poly(ethylene glycol) cryogels. Resulting from cryoconcentration effects upon gel formation, cryogel struts are observed to feature a higher stiffness compared to the corresponding bulk hydrogel materials. Local Young's moduli, porosity, and integral moduli of the cryogel scaffolds are compared in dependence on gel formation parameters. The results provide valuable insights into the cryogelation process and a base for adjusting physical characteristics of the obtained cryogel scaffolds, which can critically influence the cellular response.
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Affiliation(s)
- Petra B. Welzel
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
| | - Jens Friedrichs
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
| | - Milauscha Grimmer
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
| | - Steffen Vogler
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
| | - Uwe Freudenberg
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
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45
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Thomas AM, Shea LD. Cryotemplation for the Rapid Fabrication of Porous, Patternable Photopolymerized Hydrogels. J Mater Chem B 2014; 2:4521-4530. [PMID: 25083293 PMCID: PMC4112475 DOI: 10.1039/c4tb00585f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Aline M Thomas
- Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Evanston, Illinois
| | - Lonnie D Shea
- Department of Chemical and Biological Engineering, McCormick School of Engineering, Northwestern University, Evanston, IL, USA ; Institute for BioNanotechnology in Medicine (IBNAM), Northwestern University, Chicago, IL, USA ; Center for Reproductive Science (CRS), Northwestern University, Evanston, IL, USA ; Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL, USA ; Chemistry of Life Processes Institute (CLP), Northwestern University, Evanston, IL, USA
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46
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Ponnusamy T, Chakravarty G, Mondal D, John VT. Novel "breath figure"-based synthetic PLGA matrices for in vitro modeling of mammary morphogenesis and assessing chemotherapeutic response. Adv Healthc Mater 2014; 3:703-13. [PMID: 24132933 DOI: 10.1002/adhm.201300184] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 08/06/2013] [Indexed: 01/21/2023]
Abstract
Biodegradable poly(lactic-co-glycolic acid) (PLGA) porous films are developed to support mammary cell growth and function. Such porous polymer matrices of PLGA are generated using the easily implemented water-templating "breath-figure" technique that allows water droplets to penetrate the nascent polymer films to create a rough porous polymer film. Such breath figure-based micropatterned porous films show higher epithelial differentiation and growth than the corresponding flat 2D films, and represent the first instance of using them for tissue culture. Specifically, the breath figure morphology supports robust acinar growth with almost double the number of lobular-alveolar units compared to the 2D cultures. Gene profile analysis indicates that the cells grown on porous polymer films show enhanced expressions of mammary differentiation genes (GATA3, EMA, and INTEGB4) but lower the expression of mesenchymal gene (CALLA). Hormonal stimulation of these cultures dramatically increases expression of progenitor marker gene Notch1. Importantly, cells grown on porous PLGA films exhibit an enhanced resistance to doxorubicin treatment in comparison to 2D cultures. Breath-figure PLGA films show promise in mimicking in vivo mammary functions and can potentially be used to screen chemotherapeutic drugs. The simplicity and ease of fabrication of these polymer films is especially appealing to the development of effective biomaterials to support cell culture and differentiation.
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Affiliation(s)
- Thiruselvam Ponnusamy
- Department of Chemical and Biomolecular Engineering Tulane University New Orleans LA 70118 USA
| | - Geetika Chakravarty
- Department of Pharmacology Tulane University Health Sciences Center New Orleans LA 70112 USA
| | - Debasis Mondal
- Department of Pharmacology Tulane University Health Sciences Center New Orleans LA 70112 USA
| | - Vijay T. John
- Department of Chemical and Biomolecular Engineering Tulane University New Orleans LA 70118 USA
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47
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Liang Y, Kiick KL. Heparin-functionalized polymeric biomaterials in tissue engineering and drug delivery applications. Acta Biomater 2014; 10:1588-600. [PMID: 23911941 PMCID: PMC3937301 DOI: 10.1016/j.actbio.2013.07.031] [Citation(s) in RCA: 231] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 07/15/2013] [Accepted: 07/24/2013] [Indexed: 11/26/2022]
Abstract
Heparin plays an important role in many biological processes via its interaction with various proteins, and hydrogels and nanoparticles comprising heparin exhibit attractive properties, such as anticoagulant activity, growth factor binding, and antiangiogenic and apoptotic effects, making them great candidates for emerging applications. Accordingly, this review summarizes recent efforts in the preparation of heparin-based hydrogels and formation of nanoparticles, as well as the characterization of their properties and applications. The challenges and future perspectives for heparin-based materials are also discussed. Prospects are promising for heparin-containing polymeric biomaterials in diverse applications ranging from cell carriers for promoting cell differentiation to nanoparticle therapeutics for cancer treatment.
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Affiliation(s)
- Yingkai Liang
- Department of Materials Science and Engineering, 201 DuPont Hall, University of Delaware, Newark, DE 19716, USA
| | - Kristi L Kiick
- Department of Materials Science and Engineering, 201 DuPont Hall, University of Delaware, Newark, DE 19716, USA; Biomedical Engineering, University of Delaware, Newark, DE 19716, USA; Delaware Biotechnology Institute, 15 Innovation Way, University of Delaware, Newark, DE 19711, USA.
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Lee Y, Bae JW, Lee JW, Suh W, Park KD. Enzyme-catalyzed in situ forming gelatin hydrogels as bioactive wound dressings: effects of fibroblast delivery on wound healing efficacy. J Mater Chem B 2014; 2:7712-7718. [DOI: 10.1039/c4tb01111b] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Wound treatment using injectable or sprayable fibroblast-encapsulated GH-hydrogels.
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Affiliation(s)
- Yunki Lee
- Department of Molecular Science and Technology
- Ajou University
- Suwon 443-749, Republic of Korea
| | - Jin Woo Bae
- Department of Molecular Science and Technology
- Ajou University
- Suwon 443-749, Republic of Korea
| | - Jin Woo Lee
- Department of Orthopaedic Surgery
- Yonsei University College of Medicine
- Seoul 120-752, Republic of Korea
| | - Wonhee Suh
- College of Pharmacy
- School of Medicine
- Ajou University
- Suwon 443-749, Republic of Korea
| | - Ki Dong Park
- Department of Molecular Science and Technology
- Ajou University
- Suwon 443-749, Republic of Korea
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49
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Okay O, Lozinsky VI. Synthesis and Structure–Property Relationships of Cryogels. POLYMERIC CRYOGELS 2014. [DOI: 10.1007/978-3-319-05846-7_3] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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50
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Pan Y, Wang W, Peng C, Shi K, Luo Y, Ji X. Novel hydrophobic polyvinyl alcohol–formaldehyde foams for organic solvents absorption and effective separation. RSC Adv 2014. [DOI: 10.1039/c3ra43907k] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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