1
|
Davis K, Peng H, Chelvarajan L, Abdel-Latif A, Berron BJ. Increased yield of gelatin coated therapeutic cells through cholesterol insertion. J Biomed Mater Res A 2021; 109:326-335. [PMID: 32491263 PMCID: PMC7710926 DOI: 10.1002/jbm.a.37025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 04/14/2020] [Accepted: 04/19/2020] [Indexed: 12/21/2022]
Abstract
Gelatin coatings are effective in increasing the retention of MSCs injected into the heart and minimizing the damage from acute myocardial infarction (AMI), but early studies suffered from low fractions of the MSCs coated with gelatin. Biotinylation of the MSC surface is a critical first step in the gelatin coating process, and in this study, we evaluated the use of biotinylated cholesterol "lipid insertion" anchors as a substitute for the covalent NHS-biotin anchors to the cell surface. Streptavidin-eosin molecules, where eosin is our photoinitiator, can then be bound to the cell surface through biotin-streptavidin affinity. The use of cholesterol anchors increased streptavidin density on the surface of MSCs further driving polymerization and allowing for an increased fraction of MSCs coated with gelatin (83%) when compared to NHS-biotin (52%). Additionally, the cholesterol anchors increased the uniformity of the coating on the MSC surface and supported greater numbers of coated MSCs even when the streptavidin density was slightly lower than that of an NHS-biotin anchoring strategy. Critically, this improvement in gelatin coating efficiency did not impact cytokine secretion and other critical MSC functions. Proper selection of the cholesterol anchor and the biotinylation conditions supports cellular function and densities of streptavidin on the MSC surface of up to ~105 streptavidin molecules/μm2 . In all, these cholesterol anchors offer an effective path towards the formation of conformal coatings on the majority of MSCs to improve the retention of MSCs in the heart following AMI.
Collapse
Affiliation(s)
- Kara Davis
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky, USA
| | - Hsuan Peng
- Gill Heart and Vascular Institute and Division of Cardiovascular Medicine, University of Kentucky, Lexington KY, USA
| | - Lakshman Chelvarajan
- Gill Heart and Vascular Institute and Division of Cardiovascular Medicine, University of Kentucky, Lexington KY, USA
| | - Ahmed Abdel-Latif
- Gill Heart and Vascular Institute and Division of Cardiovascular Medicine, University of Kentucky, Lexington KY, USA
| | - Brad J. Berron
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky, USA
| |
Collapse
|
2
|
Subbiah R, Thrivikraman G, Parthiban SP, Jones JM, Athirasala A, Xie H, Bertassoni LE. Prevascularized hydrogels with mature vascular networks promote the regeneration of critical-size calvarial bone defects in vivo. J Tissue Eng Regen Med 2021; 15:219-231. [PMID: 33434398 DOI: 10.1002/term.3166] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/30/2020] [Accepted: 12/03/2020] [Indexed: 12/12/2022]
Abstract
Adequate vascularization of scaffolds is a prerequisite for successful repair and regeneration of lost and damaged tissues. It has been suggested that the maturity of engineered vascular capillaries, which is largely determined by the presence of functional perivascular mural cells (or pericytes), plays a vital role in maintaining vessel integrity during tissue repair and regeneration. Here, we investigated the role of pericyte-supported-engineered capillaries in regenerating bone in a critical-size rat calvarial defect model. Prior to implantation, human umbilical vein endothelial cells and human bone marrow stromal cells (hBMSCs) were cocultured in a collagen hydrogel to induce endothelial cell morphogenesis into microcapillaries and hBMSC differentiation into pericytes. Upon implantation into the calvarial bone defects (8 mm), the prevascularized hydrogels showed better bone formation than either untreated controls or defects treated with autologous bone grafts (positive control). Bone formation parameters such as bone volume, coverage area, and vascularity were significantly better in the prevascularized hydrogel group than in the autologous bone group. Our results demonstrate that tissue constructs engineered with pericyte-supported vascular capillaries may approximate the regenerative capacity of autologous bone, despite the absence of osteoinductive or vasculogenic growth factors.
Collapse
Affiliation(s)
- Ramesh Subbiah
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, Oregon, USA
| | - Greeshma Thrivikraman
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, Oregon, USA
| | - S Prakash Parthiban
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, Oregon, USA
| | - James M Jones
- Center for Regenerative Medicine, Oregon Health and Science University, Portland, Oregon, USA
| | - Avathamsa Athirasala
- Department of Biomedical Engineering, Oregon Health and Science University, Portland, Oregon, USA
| | - Hua Xie
- Center for Regenerative Medicine, Oregon Health and Science University, Portland, Oregon, USA
| | - Luiz E Bertassoni
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, Oregon, USA
- Center for Regenerative Medicine, Oregon Health and Science University, Portland, Oregon, USA
- Department of Biomedical Engineering, Oregon Health and Science University, Portland, Oregon, USA
- Cancer Early Detection Advanced Research (CEDAR) Center, Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon, USA
| |
Collapse
|
3
|
Feng X, Xia K, Ke Q, Deng R, Zhuang J, Wan Z, Luo P, Wang F, Zang Z, Sun X, Xiang AP, Tu X, Gao Y, Deng C. Transplantation of encapsulated human Leydig-like cells: A novel option for the treatment of testosterone deficiency. Mol Cell Endocrinol 2021; 519:111039. [PMID: 32980418 DOI: 10.1016/j.mce.2020.111039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 09/22/2020] [Accepted: 09/22/2020] [Indexed: 12/15/2022]
Abstract
Previous studies have demonstrated that the transplantation of alginate-poly-ʟ-lysine-alginate (APA)-encapsulated rat Leydig cells (LCs) provides a promising approach for treating testosterone deficiency (TD). Nevertheless, LCs have a limited capacity to proliferate, limiting the efficacy of LC transplantation therapy. Here, we established an efficient differentiation system to obtain functional Leydig-like cells (LLCs) from human stem Leydig cells (hSLCs). Then we injected APA-encapsulated LLCs into the abdominal cavities of castrated mice without an immunosuppressor. The APA-encapsulated cells survived and partially restored testosterone production for 90 days in vivo. More importantly, the transplantation of encapsulated LLCs ameliorated the symptoms of TD, such as fat accumulation, muscle atrophy and adipocyte accumulation in bone marrow. Overall, these results suggest that the transplantation of encapsulated LLCs is a promising new method for testosterone supplementation with potential clinical applications in TD.
Collapse
Affiliation(s)
- Xin Feng
- Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Kai Xia
- Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Qiong Ke
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Rongda Deng
- Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; KingMed Center for Clinical Laboratory CO., LTD, Guangzhou, China
| | - Jintao Zhuang
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zi Wan
- Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Peng Luo
- Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Fulin Wang
- Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhijun Zang
- Department of Infertility and Sexual Medicine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiangzhou Sun
- Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Andy Peng Xiang
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China; Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xiang'an Tu
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
| | - Yong Gao
- Reproductive Medicine Center, The Key Laboratory for Reproductive Medicine of Guangdong Province, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
| | - Chunhua Deng
- Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
| |
Collapse
|
4
|
Wang CY, Hong PD, Wang DH, Cherng JH, Chang SJ, Liu CC, Fang TJ, Wang YW. Polymeric Gelatin Scaffolds Affect Mesenchymal Stem Cell Differentiation and Its Diverse Applications in Tissue Engineering. Int J Mol Sci 2020; 21:ijms21228632. [PMID: 33207764 PMCID: PMC7696434 DOI: 10.3390/ijms21228632] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/13/2020] [Accepted: 11/13/2020] [Indexed: 12/13/2022] Open
Abstract
Studies using polymeric scaffolds for various biomedical applications, such as tissue engineering, implants and medical substitutes, and drug delivery systems, have attempted to identify suitable material for tissue regeneration. This study aimed to investigate the biocompatibility and effectiveness of a gelatin scaffold seeded with human adipose stem cells (hASCs), including physical characteristics, multilineage differentiation in vitro, and osteogenic potential, in a rat model of a calvarial bone defect and to optimize its design. This functionalized scaffold comprised gelatin-hASCs layers to improve their efficacy in various biomedical applications. The gelatin scaffold exhibited excellent biocompatibility in vitro after two weeks of implantation. Furthermore, the gelatin scaffold supported and specifically regulated the proliferation and osteogenic and chondrogenic differentiation of hASCs, respectively. After 12 weeks of implantation, upon treatment with the gelatin-hASCs scaffold, the calvarial bone harboring the critical defect regenerated better and displayed greater osteogenic potential without any damage to the surrounding tissues compared to the untreated bone defect. These findings suggest that the present gelatin scaffold is a good potential carrier for stem cells in various tissue engineering applications.
Collapse
Affiliation(s)
- Chia-Yu Wang
- Department of Materials Sciences and Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (C.-Y.W.); (P.-D.H.)
| | - Po-Da Hong
- Department of Materials Sciences and Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (C.-Y.W.); (P.-D.H.)
| | - Ding-Han Wang
- Department of Dentistry, School of Dentistry, National Yang-Ming University, Taipei 112, Taiwan;
| | - Juin-Hong Cherng
- Laboratory of Adult Stem Cell and Tissue Regeneration, National Defense Medical Center, Taipei 114, Taiwan; (J.-H.C.); (S.-J.C.)
- Department and Graduate Institute of Biology and Anatomy, National Defense Medical Center, Taipei 114, Taiwan
- Department of Gerontological Health Care, National Taipei University of Nursing and Health Sciences, Taipei 112, Taiwan
| | - Shu-Jen Chang
- Laboratory of Adult Stem Cell and Tissue Regeneration, National Defense Medical Center, Taipei 114, Taiwan; (J.-H.C.); (S.-J.C.)
| | - Cheng-Che Liu
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei 114, Taiwan; (C.-C.L.); (T.-J.F.)
| | - Tong-Jing Fang
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei 114, Taiwan; (C.-C.L.); (T.-J.F.)
| | - Yi-Wen Wang
- Department and Graduate Institute of Biology and Anatomy, National Defense Medical Center, Taipei 114, Taiwan
- Correspondence: ; Tel.: +886-2-8792-3100 (ext. 18749); Fax: +886-2-87923767
| |
Collapse
|
5
|
Paul K, Darzi S, McPhee G, Del Borgo MP, Werkmeister JA, Gargett CE, Mukherjee S. 3D bioprinted endometrial stem cells on melt electrospun poly ε-caprolactone mesh for pelvic floor application promote anti-inflammatory responses in mice. Acta Biomater 2019; 97:162-176. [PMID: 31386931 DOI: 10.1016/j.actbio.2019.08.003] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 07/31/2019] [Accepted: 08/01/2019] [Indexed: 12/18/2022]
Abstract
Endometrial mesenchymal stem/stromal cells (eMSCs) exhibit excellent regenerative capacity in the endometrial lining of the uterus following menstruation and high proliferative capacity in vitro. Bioprinting eMSCs onto a mesh could be a potential therapy for Pelvic Organ Prolapse (POP). This study reports an alternative treatment strategy targeting vaginal wall repair using bioprinting of eMSCs encapsulated in a hydrogel and 3D melt electrospun mesh to generate a tissue engineering construct. Following a CAD, 3D printed poly ε-caprolactone (PCL) meshes were fabricated using melt electrospinning (MES) at different temperatures using a GMP clinical grade GESIM Bioscaffolder. Electron and atomic force microscopies revealed that MES meshes fabricated at 100 °C and with a speed 20 mm/s had the largest open pore diameter (47.2 ± 11.4 μm) and the lowest strand thickness (121.4 ± 46 μm) that promoted optimal eMSC attachment. An Aloe Vera-Sodium Alginate (AV-ALG) composite based hydrogel was optimised to a 1:1 mixture (1%AV-1%ALG) and eMSCs, purified from human endometrial biopsies, were then bioprinted in this hydrogel onto the MES printed meshes. Acute in vivo foreign body response assessment in NSG mice revealed that eMSC printed on MES constructs promoted tissue integration, eMSC retention and an anti-inflammatory M2 macrophage phenotype characterised by F4/80+CD206+ colocalization. Our results address an unmet medical need highlighting the potential of 3D bioprinted eMSC-MES meshes as an alternative approach to overcome the current challenges with non-degradable knitted meshes in POP treatment. STATEMENT OF SIGNIFICANCE: This study presents the first report of bioprinting mesenchymal stem cells derived from woman endometrium (eMSCs) to boost Pelvic Organ Prolapse (POP) treatment. It impacts over 50% of elderly women with no optimal treatment at present. The overall study is conducted in three stages as fabricating a melt electrospun (MES) mesh, bioprinting eMSCs into a Ca2+ free Aloe Vera-Alginate (AV-Alg) based hydrogel and in vivo study. Our data showed that AV-ALG hydrogel potentially suppresses the foreign body response and further addition of eMSCs triggered a high influx of anti-inflammatory CD206+ M2 macrophages. Our final construct demonstrates a favourable foreign body response to predict expected tissue integration, therefore, provides a potential for developing an alternative treatment for POP.
Collapse
Affiliation(s)
- Kallyanashis Paul
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Australia; Department of Obstetrics and Gynaecology, Monash University, Clayton, Australia
| | - Saeedeh Darzi
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Australia
| | - Gordon McPhee
- Monash Health Translation Precinct, Cell Therapies and Regenerative Medicine Platform, Australia
| | - Mark P Del Borgo
- Department of Biochemistry & Molecular Biology, Monash University, Clayton, Australia
| | - Jerome A Werkmeister
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Australia; Department of Obstetrics and Gynaecology, Monash University, Clayton, Australia
| | - Caroline E Gargett
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Australia; Department of Obstetrics and Gynaecology, Monash University, Clayton, Australia
| | - Shayanti Mukherjee
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Australia; Department of Obstetrics and Gynaecology, Monash University, Clayton, Australia.
| |
Collapse
|
6
|
Yamada Y, Patel NL, Kalen JD, Schneider JP. Design of a Peptide-Based Electronegative Hydrogel for the Direct Encapsulation, 3D Culturing, in Vivo Syringe-Based Delivery, and Long-Term Tissue Engraftment of Cells. ACS Appl Mater Interfaces 2019; 11:34688-34697. [PMID: 31448901 PMCID: PMC8274941 DOI: 10.1021/acsami.9b12152] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Soft materials that facilitate the three-dimensional (3D) encapsulation, proliferation, and facile local delivery of cells to targeted tissues will aid cell-based therapies, especially those that depend on the local engraftment of implanted cells. Herein, we develop a negatively charged fibrillar hydrogel based on the de novo-designed self-assembling peptide AcVES3-RGDV. Cells are easily encapsulated during the triggered self-assembly of the peptide leading to gel formation. Self-assembly is induced by adjusting the ionic strength and/or temperature of the solution, while avoiding large changes in pH. The AcVES3-RGDV gel allows cell-material attachment enabling both two-dimensional and 3D cell culture of adherent cells. Gel-cell constructs display shear-thin/recovery rheological properties enabling their syringe-based delivery. In vivo cellular fluorescence as well as tissue resection experiments show that the gel supports the long-term engraftment of cells delivered subcutaneously into mice.
Collapse
Affiliation(s)
- Y. Yamada
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute-Frederick, National Institutes of Health, Frederick, Maryland 21702, United States
| | - N. L. Patel
- Small Animal Imaging Program, Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Incorporation, Frederick, Maryland 21702, United States
| | - J. D. Kalen
- Small Animal Imaging Program, Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Incorporation, Frederick, Maryland 21702, United States
| | - J. P. Schneider
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute-Frederick, National Institutes of Health, Frederick, Maryland 21702, United States
| |
Collapse
|
7
|
Wu D, Yu Y, Zhao C, Shou X, Piao Y, Zhao X, Zhao Y, Wang S. NK-Cell-Encapsulated Porous Microspheres via Microfluidic Electrospray for Tumor Immunotherapy. ACS Appl Mater Interfaces 2019; 11:33716-33724. [PMID: 31454227 DOI: 10.1021/acsami.9b12816] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Immunotherapy has recently garnered significant research interest in the field of clinical cancer management. The potential of tumor immunotherapy has been demonstrated for targeting a variety of tumors, both in vivo and in vitro, yielding some remarkable therapeutic effects. Herein, inspired by the stem cell niche, we developed a scale-up approach to generating porous microspheres with encapsulated natural killer (NK) cells via microfluidic electrospray for in situ tumor immunotherapy. The generated microspheres contained porous microstructures with tunable morphologies because of versatile but precise fluid control in the microfluidic electrospray system. NK-92MI cells encapsulated in porous microspheres were protected from the outer complex environment, allowing for improved proliferation and functionality. As observed, perforin and granzymes were sustainably secreted from the encapsulated NK-92MI cells, which exhibited robust killing effects on tumors both in vitro and in vivo. With continual proliferation, NK-92MI cells budded from the surface of porous microspheres and migrated into the surrounding residual tumor tissues, further destroying tumor cells. More importantly, no side effects owing to the native host immune system were observed by injecting the NK-92MI cell-encapsulated microspheres into tumors in vivo. Therefore, the NK-cell-encapsulated porous microspheres show great potential for tumor immunotherapy, offering a robust and attractive treatment option for cancer patient management.
Collapse
MESH Headings
- Animals
- Cell Line, Tumor
- Cells, Immobilized/immunology
- Cells, Immobilized/pathology
- Cells, Immobilized/transplantation
- Humans
- Immunity, Cellular
- Immunotherapy
- Killer Cells, Natural/immunology
- Killer Cells, Natural/pathology
- Killer Cells, Natural/transplantation
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Microspheres
- Neoplasms, Experimental/immunology
- Neoplasms, Experimental/therapy
- Porosity
Collapse
Affiliation(s)
- Dan Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases , National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University , Hangzhou , Zhejiang Province 310003 , China
- Institute for Translational Medicine , Zhejiang University , Hangzhou , Zhejiang Province 310029 , China
| | - Yunru Yu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Cheng Zhao
- Department of General Surgery, Jinling Hospital , Medical School of Nanjing University , Nanjing 210002 , China
| | - Xin Shou
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases , National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University , Hangzhou , Zhejiang Province 310003 , China
- Institute for Translational Medicine , Zhejiang University , Hangzhou , Zhejiang Province 310029 , China
| | - Yun Piao
- Department of Biomedical Engineering , The Hong Kong Polytechnic University , Hong Kong 999077 , China
| | - Xin Zhao
- Department of Biomedical Engineering , The Hong Kong Polytechnic University , Hong Kong 999077 , China
| | - Yuanjin Zhao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Shuqi Wang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases , National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University , Hangzhou , Zhejiang Province 310003 , China
- Institute for Translational Medicine , Zhejiang University , Hangzhou , Zhejiang Province 310029 , China
| |
Collapse
|
8
|
Lenti E, Bianchessi S, Proulx ST, Palano MT, Genovese L, Raccosta L, Spinelli A, Drago D, Andolfo A, Alfano M, Petrova TV, Mukenge S, Russo V, Brendolan A. Therapeutic Regeneration of Lymphatic and Immune Cell Functions upon Lympho-organoid Transplantation. Stem Cell Reports 2019; 12:1260-1268. [PMID: 31155505 PMCID: PMC6565831 DOI: 10.1016/j.stemcr.2019.04.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/29/2019] [Accepted: 04/30/2019] [Indexed: 12/14/2022] Open
Abstract
Lymph nodes (LNs) are secondary lymphoid tissues that play a critical role in filtering the lymph and promoting adaptive immune responses. Surgical resection of LNs, radiation therapy, or infections may damage lymphatic vasculature and compromise immune functions. Here, we describe the generation of functional synthetic lympho-organoids (LOs) using LN stromal progenitors and decellularized extracellular matrix-based scaffolds, two basic constituents of secondary lymphoid tissues. We show that upon transplantation at the site of resected LNs, LOs become integrated into the endogenous lymphatic vasculature and efficiently restore lymphatic drainage and perfusion. Upon immunization, LOs support the activation of antigen-specific immune responses, thus acquiring properties of native lymphoid tissues. These findings provide a proof-of-concept strategy for the development of functional lympho-organoids suitable for restoring lymphatic and immune cell functions.
Collapse
Affiliation(s)
- Elisa Lenti
- Unit of Lymphoid Organ Development, Division of Experimental Oncology, DIBIT-1 3A2, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132 Milan, Italy
| | - Silvia Bianchessi
- Unit of Lymphoid Organ Development, Division of Experimental Oncology, DIBIT-1 3A2, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132 Milan, Italy
| | - Steven T Proulx
- Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology, ETH Zurich, 8093 Zurich, Switzerland
| | - Maria Teresa Palano
- Unit of Lymphoid Organ Development, Division of Experimental Oncology, DIBIT-1 3A2, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132 Milan, Italy
| | - Luca Genovese
- Unit of Lymphoid Organ Development, Division of Experimental Oncology, DIBIT-1 3A2, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132 Milan, Italy
| | - Laura Raccosta
- Unit of Immuno-Biotherapy of Melanoma and Solid Tumors, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Antonello Spinelli
- Experimental Imaging Centre, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Denise Drago
- ProMiFa, Protein Microsequencing Facility, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Annapaola Andolfo
- ProMiFa, Protein Microsequencing Facility, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Massimo Alfano
- Division of Experimental Oncology/Unit of Urology, URI, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Tatiana V Petrova
- Department of Oncology, University of Lausanne, and Ludwig Institute for Cancer Research, 1066 Lausanne, Switzerland
| | - Sylvain Mukenge
- Department of Hepatobiliary Surgery, IRCCS San Raffaele Hospital, 20132 Milan, Italy
| | - Vincenzo Russo
- Unit of Immuno-Biotherapy of Melanoma and Solid Tumors, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Andrea Brendolan
- Unit of Lymphoid Organ Development, Division of Experimental Oncology, DIBIT-1 3A2, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132 Milan, Italy.
| |
Collapse
|
9
|
Streeter BW, Xue J, Xia Y, Davis ME. Electrospun Nanofiber-Based Patches for the Delivery of Cardiac Progenitor Cells. ACS Appl Mater Interfaces 2019; 11:18242-18253. [PMID: 31021079 DOI: 10.1021/acsami.9b04473] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Congenital heart disease is the number one cause of birth defect-related death because it often leads to right ventricular heart failure (RVHF). One promising avenue to combat this RVHF is the use of cardiac patches composed of stem cells and scaffolds. Herein, we demonstrate a reparative cardiac patch by combining neonatal or child c-kit+ progenitor cells (CPCs) with a scaffold composed of electrospun polycaprolactone nanofibers. We examined different parameters of the patch, including the alignment, composition, and surface properties of the nanofibers, as well as the age of the CPCs. The patch based on uniaxially aligned nanofibers successfully aligned the CPCs. With the inclusion of gelatin in the nanofiber matrix and/or coating of fibronectin on the surface of the nanofibers, the metabolism of both neonatal and child CPCs was generally enhanced. The conditioned media collected from both patches based on aligned and random nanofibers could reduce the fibrotic gene expression in rat cardiac fibroblasts, following stimulation with transforming growth factor β. Furthermore, the conditioned media collected from the nanofiber-based patches could lead to the formation of tubes of human umbilical vein endothelial cells, indicating the pro-angiogenic capability of the patch. Taken together, the electrospun nanofiber-based patches are a suitable delivery vehicle for CPCs and can confer reparative benefit through anti-fibrotic and pro-angiogenic paracrine signaling.
Collapse
Affiliation(s)
- Benjamin W Streeter
- Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University School of Medicine , Atlanta , Georgia 30332 , United States
| | - Jiajia Xue
- Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University School of Medicine , Atlanta , Georgia 30332 , United States
| | - Younan Xia
- Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University School of Medicine , Atlanta , Georgia 30332 , United States
- School of Chemistry and Biochemistry, School of Chemical and Biological Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Michael E Davis
- Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University School of Medicine , Atlanta , Georgia 30332 , United States
- Division of Cardiology , Emory University School of Medicine , Atlanta , Georgia 30322 , United States
- Children's Heart Research and Outcomes (HeRO) Center , Children's Healthcare of Atlanta and Emory University , Atlanta , Georgia 30322 , United States
| |
Collapse
|
10
|
Mehrali M, Thakur A, Kadumudi FB, Pierchala MK, Cordova JAV, Shahbazi MA, Mehrali M, Pennisi CP, Orive G, Gaharwar AK, Dolatshahi-Pirouz A. Pectin Methacrylate (PEMA) and Gelatin-Based Hydrogels for Cell Delivery: Converting Waste Materials into Biomaterials. ACS Appl Mater Interfaces 2019; 11:12283-12297. [PMID: 30864429 DOI: 10.1021/acsami.9b00154] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The emergence of nontoxic, eco-friendly, and biocompatible polymers derived from natural sources has added a new and exciting dimension to the development of low-cost and scalable biomaterials for tissue engineering applications. Here, we have developed a mechanically strong and durable hydrogel composed of an eco-friendly biopolymer that exists within the cell walls of fruits and plants. Its trade name is pectin, and it bears many similarities with natural polysaccharides in the native extracellular matrix. Specifically, we have employed a new pathway to transform pectin into a ultraviolet (UV)-cross-linkable pectin methacrylate (PEMA) polymer. To endow this hydrogel matrix with cell differentiation and cell spreading properties, we have also incorporated thiolated gelatin into the system. Notably, we were able to fine-tune the compressive modulus of this hydrogel in the range ∼0.5 to ∼24 kPa: advantageously, our results demonstrated that the hydrogels can support growth and viability for a wide range of three-dimensionally (3D) encapsulated cells that include muscle progenitor (C2C12), neural progenitor (PC12), and human mesenchymal stem cells (hMSCs). Our results also indicate that PEMA-gelatin-encapsulated hMSCs can facilitate the formation of bonelike apatite after 5 weeks in culture. Finally, we have demonstrated that PEMA-gelatin can yield micropatterned cell-laden 3D constructs through UV light-assisted lithography. The simplicity, scalability, processability, tunability, bioactivity, and low-cost features of this new hydrogel system highlight its potential as a stem cell carrier that is capable of bridging the gap between clinic and laboratory.
Collapse
Affiliation(s)
- Mehdi Mehrali
- Department of Health Technology, Center for Intestinal Absorption and Transport of Biopharmaceuticals , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | - Ashish Thakur
- Department of Health Technology, Center for Intestinal Absorption and Transport of Biopharmaceuticals , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | - Firoz Babu Kadumudi
- Department of Health Technology, Center for Intestinal Absorption and Transport of Biopharmaceuticals , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | - Malgorzata Karolina Pierchala
- Department of Health Technology, Center for Intestinal Absorption and Transport of Biopharmaceuticals , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | - Julio Alvin Vacacela Cordova
- Department of Health Technology, Center for Intestinal Absorption and Transport of Biopharmaceuticals , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
- Department of Health Science and Technology, Laboratory for Stem Cell Research , Aalborg University , Fredrik Bajers Vej 3B , 9220 , Aalborg , Denmark
| | - Mohammad-Ali Shahbazi
- Department of Health Technology, Center for Intestinal Absorption and Transport of Biopharmaceuticals , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | - Mohammad Mehrali
- Faculty of Engineering Technology, Laboratory of Thermal Engineering , University of Twente , Enschede 7500 AE , The Netherlands
| | - Cristian Pablo Pennisi
- Department of Health Science and Technology, Laboratory for Stem Cell Research , Aalborg University , Fredrik Bajers Vej 3B , 9220 , Aalborg , Denmark
| | - Gorka Orive
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy , University of the Basque Country UPV/EHU , Paseo de la Universidad 7 , 01006 Vitoria-Gasteiz , Spain
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) , 01006 Vitoria-Gasteiz , Spain
- University Institute for Regenerative Medicine and Oral Implantology-UIRMI (UPV/EHU-Fundacion Eduardo Anitua) , 01007 Vitoria , Spain
- Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower , 169856 Singapore
| | | | - Alireza Dolatshahi-Pirouz
- Department of Health Technology, Center for Intestinal Absorption and Transport of Biopharmaceuticals , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
- Department of Regenerative Biomaterials , Radboud University Medical Center , Philips van Leydenlaan 25 , Nijmegen 6525 EX , The Netherlands
| |
Collapse
|
11
|
Jiang K, Chaimov D, Patel SN, Liang JP, Wiggins SC, Samojlik MM, Rubiano A, Simmons CS, Stabler CL. 3-D physiomimetic extracellular matrix hydrogels provide a supportive microenvironment for rodent and human islet culture. Biomaterials 2019; 198:37-48. [PMID: 30224090 PMCID: PMC6397100 DOI: 10.1016/j.biomaterials.2018.08.057] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 07/31/2018] [Accepted: 08/27/2018] [Indexed: 01/19/2023]
Abstract
Organ-on-a-chip platforms serve as cost-efficient testbeds for screening pharmaceutical agents, mimicking natural physiology, and studying disease. In the field of diabetes, the development of an islet-on-a-chip platform would have broad implications in understanding disease pathology and discovering potential therapies. Islet microphysiological systems are limited, however, by their poor cell survival and function in culture. A key factor that has been implicated in this decline is the disruption of islet-matrix interactions following isolation. Herein, we sought to recapitulate the in vivo peri-islet niche using decellularized extracellular matrix (ECM) hydrogels. Sourcing from porcine bladder, lung, and pancreas tissues, 3-D ECM hydrogels were generated, characterized, and validated using both rodent and human pancreatic islets. Optimized decellularization protocols resulted in hydrogels with distinctive viscoelastic properties that correlated to their matrix composition. The in situ 3-D encapsulation of human or rat islets within ECM hydrogels resulted in improved functional stability over standard culture conditions. Islet composition and morphology were also altered, with enhanced retention of islet-resident endothelial cells and the formation of cord-like structures or sprouts emerging from the islet spheroid. These supportive 3-D physiomimetic ECM hydrogels can be leveraged within microfluidic platforms for the long-term culture of islets.
Collapse
Affiliation(s)
- K Jiang
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, United States
| | - D Chaimov
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, United States
| | - S N Patel
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, United States
| | - J-P Liang
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, United States
| | - S C Wiggins
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, United States
| | - M M Samojlik
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, United States
| | - A Rubiano
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, United States
| | - C S Simmons
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, United States; Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, United States
| | - C L Stabler
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, United States.
| |
Collapse
|
12
|
Samberg M, Stone R, Natesan S, Kowalczewski A, Becerra S, Wrice N, Cap A, Christy R. Platelet rich plasma hydrogels promote in vitro and in vivo angiogenic potential of adipose-derived stem cells. Acta Biomater 2019; 87:76-87. [PMID: 30665019 DOI: 10.1016/j.actbio.2019.01.039] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/18/2018] [Accepted: 01/17/2019] [Indexed: 12/23/2022]
Abstract
Despite great advances in skin wound care utilizing grafting techniques, the resulting severe scarring, deformity and ineffective vascularization remains a challenge. Alternatively, tissue engineering of new skin using patient-derived stem cells and scaffolding materials promises to greatly increase the functional and aesthetic outcome of skin wound healing. This work focused on the optimization of a polyethylene glycol modified (PEGylated) platelet-rich plasma (PRP) hydrogel for the protracted release of cytokines, growth factors, and signaling molecules and also the delivery of a provisional physical framework for stem cell angiogenesis. Freshly collected whole blood was utilized to synthesize PEGylated PRP hydrogels containing platelet concentrations ranging from 0 to 200,000 platelets/µl. Hydrogels were characterized using thromboelastography and impedance aggregometry for platelet function and were visualized using scanning electron microscopy. To assess the effects of PEGylated PRP hydrogels on cells, PRP solutions were seeded with human adipose-derived stem cells (ASCs) prior to gelation. Following 14 days of incubation in vitro, increased platelet concentrations resulted in higher ASC proliferation and vascular gene and protein expression (assessed via RT-PCR, ELISA, and immunochemistry). Using a rat skin excision model, wounds treated with PRP + ASC hydrogels increased the number of vessels in the wound by day 8 (80.2 vs. 62.6 vessels/mm2) compared to controls. In conclusion, the proposed PEGylated PRP hydrogel promoted both in vitro and transient in vivo angiogenesis of ASCs for improved wound healing. STATEMENT OF SIGNIFICANCE: Our findings support an innovative means of cellular therapy intervention to improve surgical wound healing in a normal wound model. ASCs seeded within PEGylated PRP could be an efficacious and completely autologous therapy for treating patients who have poorly healing wounds caused by vascular insufficiency, previous irradiation, or full-thickness burns. Because wound healing is a dynamic and complex process, the application of more than one growth factor with ASCs demonstrates an advantageous way of improving healing.
Collapse
Affiliation(s)
- Meghan Samberg
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Randolph Stone
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Shanmugasundaram Natesan
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Andrew Kowalczewski
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Sandra Becerra
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Nicole Wrice
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA
| | - Andrew Cap
- U.S. Army Institute of Surgical Research, Coagulation and Blood Research, JBSA Fort Sam Houston, TX, USA
| | - Robert Christy
- U.S. Army Institute of Surgical Research, Combat Trauma and Burn Injury Research, JBSA Fort Sam Houston, TX, USA.
| |
Collapse
|
13
|
McKinney JM, Doan TN, Wang L, Deppen J, Reece DS, Pucha KA, Ginn S, Levit RD, Willett NJ. Therapeutic efficacy of intra-articular delivery of encapsulated human mesenchymal stem cells on early stage osteoarthritis. Eur Cell Mater 2019; 37:42-59. [PMID: 30693466 PMCID: PMC7549187 DOI: 10.22203/ecm.v037a04] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Mesenchymal stem cells (MSCs) represent a great therapeutic promise in pre-clinical models of osteoarthritis (OA), but many questions remain as to their therapeutic mechanism of action: engraftment versus paracrine action. Encapsulation of human MSCs (hMSCs) in sodium alginate microspheres allowed for the paracrine signaling properties of these cells to be isolated and studied independently of direct cellular engraftment. The objective of the present study was to quantitatively assess the efficacy of encapsulated hMSCs as a disease-modifying therapeutic for OA, using a medial meniscal tear (MMT) rat model. It was hypothesized that encapsulated hMSCs would have a therapeutic effect, through paracrine-mediated action, on early OA development. Lewis rats underwent MMT surgery to induce OA. 1 d post-surgery, rats received intra-articular injections of encapsulated hMSCs or controls (i.e., saline, empty capsules, non-encapsulated hMSCs). Microstructural changes in the knee joint were quantified using equilibrium partitioning of a ionic contrast agent based micro-computed tomography (EPIC-μCT) at 3 weeks post-surgery, an established time point for early OA. Encapsulated hMSCs significantly attenuated MMT-induced increases in articular cartilage swelling and surface roughness and augmented cartilaginous and mineralized osteophyte volumes. Cellular encapsulation allowed to isolate the hMSC paracrine signaling effects and demonstrated that hMSCs could exert a chondroprotective therapeutic role on early stage OA through paracrine signaling alone. In addition to this chondroprotective role, encapsulated hMSCs augmented the compensatory increases in osteophyte formation. The latter should be taken into strong consideration as many clinical trials using MSCs for OA are currently ongoing.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - N J Willett
- Atlanta Veteran Affairs Medical Center, 1670 Clairmont Rd, Room 5A-115, Decatur, GA 30033,
| |
Collapse
|
14
|
Niu H, Li X, Li H, Fan Z, Ma J, Guan J. Thermosensitive, fast gelling, photoluminescent, highly flexible, and degradable hydrogels for stem cell delivery. Acta Biomater 2019; 83:96-108. [PMID: 30541703 PMCID: PMC6296825 DOI: 10.1016/j.actbio.2018.10.038] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 10/23/2018] [Accepted: 10/23/2018] [Indexed: 12/30/2022]
Abstract
Stem cell therapy is a promising approach to regenerate ischemic cardiovascular tissues yet experiences low efficacy. One of the major causes is inferior cell retention in tissues. Injectable cell carriers that can quickly solidify upon injection into tissues so as to immediately increase viscosity have potential to largely improve cell retention. A family of injectable, fast gelling, and thermosensitive hydrogels were developed for delivering stem cells into heart and skeletal muscle tissues. The hydrogels were also photoluminescent with low photobleaching, allowing for non-invasively tracking hydrogel biodistribution and retention by fluorescent imaging. The hydrogels were polymerized by N-isopropylacrylamide (NIPAAm), 2-hydroxyethyl methacrylate (HEMA), 1-vinyl-2-pyrrolidinone (VP), and acrylate-oligolactide (AOLA), followed by conjugation with hypericin (HYP). The hydrogel solutions had thermal transition temperatures around room temperature, and were readily injectable at 4 °C. The solutions were able to quickly solidify within 7 s at 37 °C. The formed gels were highly flexible possessing similar moduli as the heart and skeletal muscle tissues. In vitro, hydrogel fluorescence intensity decreased proportionally to weight loss. After being injected into thigh muscles, the hydrogel can be detected by an in vivo imaging system for 4 weeks. The hydrogels showed excellent biocompatibility in vitro and in vivo, and can stimulate mesenchymal stem cell (MSC) proliferation and paracrine effects. The fast gelling hydrogel remarkably increased MSC retention in thigh muscles compared to slow gelling collagen, and non-gelling PBS. These hydrogels have potential to efficiently deliver stem cells into tissues. Hydrogel degradation can be non-invasively and real-time tracked. STATEMENT OF SIGNIFICANCE: Low cell retention in tissues represents one of the major causes for limited therapeutic efficacy in stem cell therapy. A family of injectable, fast gelling, and thermosensitive hydrogels that can quickly solidify upon injection into tissues were developed to improve cell retention. The hydrogels were also photoluminescent, allowing for non-invasively and real-time tracking hydrogel biodistribution and retention by fluorescent imaging.
Collapse
Affiliation(s)
- Hong Niu
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH, USA
| | - Xiaofei Li
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH, USA
| | - Haichang Li
- Department of Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - Zhaobo Fan
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH, USA
| | - Jianjie Ma
- Department of Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - Jianjun Guan
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH, USA; Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, MO 63130, USA.
| |
Collapse
|
15
|
Zhou X, Wang J, Huang X, Fang W, Tao Y, Zhao T, Liang C, Hua J, Chen Q, Li F. Injectable decellularized nucleus pulposus-based cell delivery system for differentiation of adipose-derived stem cells and nucleus pulposus regeneration. Acta Biomater 2018; 81:115-128. [PMID: 30267879 DOI: 10.1016/j.actbio.2018.09.044] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 08/11/2018] [Accepted: 09/25/2018] [Indexed: 12/19/2022]
Abstract
Stem cell-based tissue engineering is a promising treatment for intervertebral disc (IVD) degeneration. A bio-scaffold that can maintain the function of transplanted cells and possesses favorable mechanical properties is needed in tissue engineering. Decellularized nucleus pulposus (dNP) has the potential to be a suitable bio-scaffold because it mimics the native nucleus pulposus (NP) composition. However, matrix loss during decellularization and difficulty in transplantation limit the clinical application of dNP scaffolds. In this study, we fabricated an injectable dNP-based cell delivery system (NPCS) and evaluated its properties by assessing the microstructure, biochemical composition, water content, biosafety, biostability, and mechanical properties. We also investigated the stimulatory effects of the bio-scaffold on the NP-like differentiation of adipose-derived stem cells (ADSCs) in vitro and the regenerative effects of the NPCS on degenerated NP in an in vivo animal model. The results showed that approximately 68% and 43% of the collagen and sGAG, respectively, remained in the NPCS after 30 days. The NPCS also showed mechanical properties similar to those of fresh NP. In addition, the NPCS was biocompatible and able to induce NP-like differentiation and extracellular matrix (ECM) synthesis in ADSCs. The disc height index (almost 81%) and the MRI index (349.05 ± 38.48) of the NPCS-treated NP were significantly higher than those of the degenerated NP after 16 weeks. The NPCS also partly restored the ECM content and the structure of degenerated NP in vivo. Our NPCS has good biological and mechanical properties and has the ability to promote the regeneration of degenerated NP. STATEMENT OF SIGNIFICANCE: Nucleus pulposus (NP) degeneration is usually the origin of intervertebral disc degeneration. Stem cell-based tissue engineering is a promising treatment for NP regeneration. Bio-scaffolds which have favorable biological and mechanical properties are needed in tissue engineering. Decellularized NP (dNP) scaffold is a potential choice for tissue engineering, but the difficulty in balancing complete decellularization and retaining ECM limits its usage. Instead of choosing different decellularization protocols, we complementing the sGAG lost during decellularization by cross-linking via genipin and fabricating an injectable dNP-based cell delivery system (NPCS) which has similar components as the native NP. We also investigated the biological and mechanical properties of the NPCS in vitro and verified its regenerative effects on degenerated IVDs in an animal model.
Collapse
Affiliation(s)
- Xiaopeng Zhou
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou 310009, Zhejiang, People's Republic of China; Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Jingkai Wang
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou 310009, Zhejiang, People's Republic of China; Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Xianpeng Huang
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou 310009, Zhejiang, People's Republic of China; Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Weijing Fang
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou 310009, Zhejiang, People's Republic of China; Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Yiqing Tao
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou 310009, Zhejiang, People's Republic of China; Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Tengfei Zhao
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou 310009, Zhejiang, People's Republic of China; Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Chengzhen Liang
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou 310009, Zhejiang, People's Republic of China; Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Jianming Hua
- Department of Radiology, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou 310009, Zhejiang, People's Republic of China
| | - Qixin Chen
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou 310009, Zhejiang, People's Republic of China; Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.
| | - Fangcai Li
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou 310009, Zhejiang, People's Republic of China; Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.
| |
Collapse
|
16
|
Abstract
Mesenchymal stem cells (MSCs) are pluripotent stem cells with the ability to differentiate into a variety of other connective tissue cells, such as chondral, bony, muscular, and tendon tissue. Bone marrow-derived MSCs are pluripotent cells that can differentiate among others into osteoblasts, adipocytes and chondrocytes.Bone marrow-derived cells may represent the future in osteochondral repair. A one-step arthroscopic technique is developed for cartilage repair, using a device to concentrate bone marrow-derived cells and collagen powder or hyaluronic acid membrane as scaffolds for cell support and platelet gel.The rationale of the "one-step technique" is to transplant the entire bone-marrow cellular pool instead of isolated and expanded mesenchymal stem cells allowing cells to be processed directly in the operating room, without the need for a laboratory phase. For an entirely arthroscopic implantation are employed a scaffold and the instrumentation previously applied for ACI; in addition to these devices, autologous platelet-rich fibrin (PRF) is added in order to provide a supplement of growth factors. Results of this technique are encouraging at mid-term although long-term follow-up is still needed.
Collapse
Affiliation(s)
- Eleonora Pintus
- I Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Matteo Baldassarri
- I Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Luca Perazzo
- I Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Simone Natali
- I Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Diego Ghinelli
- I Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Roberto Buda
- I Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy.
| |
Collapse
|
17
|
Nguyen MK, Jeon O, Dang PN, Huynh CT, Varghai D, Riazi H, McMillan A, Herberg S, Alsberg E. RNA interfering molecule delivery from in situ forming biodegradable hydrogels for enhancement of bone formation in rat calvarial bone defects. Acta Biomater 2018; 75:105-114. [PMID: 29885529 PMCID: PMC6119505 DOI: 10.1016/j.actbio.2018.06.007] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 06/01/2018] [Accepted: 06/04/2018] [Indexed: 11/22/2022]
Abstract
RNA interference (RNAi) may be an effective and valuable tool for promoting the growth of functional tissue, as short interfering RNA (siRNA) and microRNA (miRNA) can block the expression of genes that have negative effects on tissue regeneration. Our group has recently reported that the localized and sustained presentation of siRNA against noggin (siNoggin) and miRNA-20a from in situ forming poly(ethylene glycol) (PEG) hydrogels enhanced osteogenic differentiation of encapsulated human bone marrow-derived mesenchymal stem cells (hMSCs). Here, the capacity of the hydrogel system to accelerate bone formation in a rat calvarial bone defect model is presented. After 12 weeks post-implantation, the hydrogels containing encapsulated hMSCs and miRNA-20a resulted in more bone formation in the defects than the hydrogels containing hMSCs without siRNA or with negative control siRNA. This localized and sustained RNA interfering molecule delivery system may provide an excellent platform for healing bony defects and other tissues. STATEMENT OF SIGNIFICANCE Delivery of RNAi molecules may be a valuable strategy to guide cell behavior for tissue engineering applications, but to date there have been no reports of a biomaterial system capable of both encapsulation of cells and controlled delivery of incorporated RNA. Here, we present PEG hydrogels that form in situ via Michael type reaction, and that permit encapsulation of hMSCs and the concomitant controlled delivery of siNoggin and/or miRNA-20a. These RNAs were chosen to suppress noggin, a BMP-2 antagonist, and/or PPAR-γ, a negative regulator of BMP-2-mediated osteogenesis, and therefore promote osteogenic differentiation of hMSCs and subsequent bone repair in critical-sized rat calvarial defects. Simultaneous delivery of hMSCs and miRNA-20a enhanced repair of these defects compared to hydrogels containing hMSCs without siRNA or with negative control siRNA. This in situ forming PEG hydrogel system offers an exciting platform for healing critical-sized bone defects by localized, controlled delivery of RNAi molecules to encapsulated hMSCs and surrounding cells.
Collapse
Affiliation(s)
- Minh K Nguyen
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Oju Jeon
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Phuong N Dang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Cong T Huynh
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Davood Varghai
- Department of Neurological Surgery, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Hooman Riazi
- Department of Neurological Surgery, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Alexandra McMillan
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Samuel Herberg
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Eben Alsberg
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States; Department of Orthopaedic Surgery, Case Western Reserve University, Cleveland, OH 44106, United States.
| |
Collapse
|
18
|
Abstract
PURPOSE OF REVIEW There is considerable interest in using macroencapsulation devices as a delivery strategy for transplanting insulin-producing cells. This review aims to summarize recent advances, to highlight remaining challenges, and to provide recommendations for the field. RECENT FINDINGS A variety of new device designs have been reported to improve biocompatibility and to provide protection for islet/beta cells from immune destruction while allowing continuous secretion of insulin. Some of these new approaches are in clinical trials, but more research is needed to determine how sufficient beta-cell mass can be transplanted in a clinically applicable device size, and that insulin is secreted with kinetics that will safely provide adequate controls of glucose levels. Macroencapsulation is a potential solution to transplant beta cells without immunosuppression in diabetes patients, but new strategies must be developed to show that this approach is feasible.
Collapse
Affiliation(s)
- Albert J Hwa
- Joslin Diabetes Center, 1 Joslin Pl, Boston, MA, 02215, USA.
| | - Gordon C Weir
- Joslin Diabetes Center, 1 Joslin Pl, Boston, MA, 02215, USA
| |
Collapse
|
19
|
Gabr MM, Zakaria MM, Refaie AF, Ismail AM, Khater SM, Ashamallah SA, Azzam MM, Ghoneim MA. Insulin-producing Cells from Adult Human Bone Marrow Mesenchymal Stromal Cells Could Control Chemically Induced Diabetes in Dogs: A Preliminary Study. Cell Transplant 2018; 27:937-947. [PMID: 29860900 PMCID: PMC6050912 DOI: 10.1177/0963689718759913] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 01/20/2018] [Accepted: 01/25/2018] [Indexed: 11/18/2022] Open
Abstract
Ten mongrel dogs were used in this study. Diabetes was chemically induced in 7 dogs, and 3 dogs served as normal controls. For each diabetic dog, 5 million human bone marrow-derived mesenchymal stem cells/kg were differentiated to form insulin-producing cells using a trichostatin-based protocol. Cells were then loaded in 2 TheraCyte capsules which were transplanted under the rectus sheath. One dog died 4 d postoperatively from pneumonia. Six dogs were followed up with for 6 to 18 mo. Euglycemia was achieved in 4 dogs. Their glucose tolerance curves exhibited a normal pattern demonstrating that the encapsulated cells were glucose sensitive and insulin responsive. In the remaining 2 dogs, the fasting blood sugar levels were reduced but did not reach normal values. The sera of all transplanted dogs contained human insulin and C-peptide with a negligible amount of canine insulin. Removal of the transplanted capsules was followed by prompt return of diabetes. Intracytoplasmic insulin granules were seen by immunofluorescence in cells from the harvested capsules. Furthermore, all pancreatic endocrine genes were expressed. This study demonstrated that the TheraCyte capsule or a similar device can provide adequate immunoisolation, an important issue when stem cells are considered for the treatment of type 1 diabetes mellitus.
Collapse
|
20
|
Liu H, Cheng Y, Chen J, Chang F, Wang J, Ding J, Chen X. Component effect of stem cell-loaded thermosensitive polypeptide hydrogels on cartilage repair. Acta Biomater 2018; 73:103-111. [PMID: 29684624 DOI: 10.1016/j.actbio.2018.04.035] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/28/2018] [Accepted: 04/19/2018] [Indexed: 12/18/2022]
Abstract
Biophysical properties of the desired biomimetic scaffolds, such as porosity and elasticity, have been proven associated with the efficacy of cartilage regeneration. In this work, the copolymers of poly(l-alanine)-block-poly(ethylene glycol)-block-poly(l-alanine) (PA-PEG-PA) and poly(l-alanine-co-l-phenylalanine)-block-poly(ethylene glycol)-block-poly(l-alanine-co-l-phenylalanine) (PAF-PEG-PAF) with different ratios of alanine to phenylalanine were synthesized. The introduction of a hydrophobic amino acid, i.e., phenylalanine, into polyalanine-based thermosensitive hydrogel led to the enhanced gelation behaviors and upregulated mechanical properties. Moreover, the increase of phenylalanine content resulted in the enlarged pore size and enhanced mechanical strength of PAF-PEG-PAF thermogel, followed by the regeneration of hyaline-like cartilage with reduced fibrous tissue formation in vivo. The findings indicated the great potential of thermosensitive polypeptide hydrogels in cartilage tissue engineering. STATEMENT OF SIGNIFICANCE Articular cartilage defect has limited self-repair ability due to the lack of blood supply and innervation, which may lead to knee osteoarthritis afterwards. Injectable hydrogels are demonstrated possessing outstanding properties as biomimetic scaffolds in cartilage tissue engineering, while the effect of biophysical properties on the efficacy of cartilage regeneration has not been revealed. Herein, the poly(ethylene glycol)-polypeptide triblock copolymers with different ratios of alanine to phenylalanine were synthesized. The sol-to-gel transition temperature and the critical gelation concentration decreased as the increased amount of phenylalanine unit, resulting in the enlarged pore size and enhanced mechanical strength. These features lead to better regeneration of hyaline-like cartilage with reduced fibrous tissue formation, indicating great potential of thermosensitive polypeptide hydrogels for efficient cartilage repair.
Collapse
Affiliation(s)
- He Liu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; Department of Orthopaedics, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - Yilong Cheng
- Department of Applied Chemistry, School of Science, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Jinjin Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Fei Chang
- Department of Orthopaedics, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - Jincheng Wang
- Department of Orthopaedics, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| |
Collapse
|
21
|
Saenz Del Burgo L, Ciriza J, Espona-Noguera A, Illa X, Cabruja E, Orive G, Hernández RM, Villa R, Pedraz JL, Alvarez M. 3D Printed porous polyamide macrocapsule combined with alginate microcapsules for safer cell-based therapies. Sci Rep 2018; 8:8512. [PMID: 29855599 PMCID: PMC5981392 DOI: 10.1038/s41598-018-26869-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 05/17/2018] [Indexed: 02/06/2023] Open
Abstract
Cell microencapsulation is an attractive strategy for cell-based therapies that allows the implantation of genetically engineered cells and the continuous delivery of de novo produced therapeutic products. However, the establishment of a way to retrieve the implanted encapsulated cells in case the treatment needs to be halted or when cells need to be renewed is still a big challenge. The combination of micro and macroencapsulation approaches could provide the requirements to achieve a proper immunoisolation, while maintaining the cells localized into the body. We present the development and characterization of a porous implantable macrocapsule device for the loading of microencapsulated cells. The device was fabricated in polyamide by selective laser sintering (SLS), with controlled porosity defined by the design and the sintering conditions. Two types of microencapsulated cells were tested in order to evaluate the suitability of this device; erythropoietin (EPO) producing C2C12 myoblasts and Vascular Endothelial Growth Factor (VEGF) producing BHK fibroblasts. Results showed that, even if the metabolic activity of these cells decreased over time, the levels of therapeutic protein that were produced and, importantly, released to the media were stable.
Collapse
Affiliation(s)
- Laura Saenz Del Burgo
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Jesús Ciriza
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Albert Espona-Noguera
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Xavi Illa
- Instituto de Microelectronica de Barcelona (IMB-CNM, CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Enric Cabruja
- Instituto de Microelectronica de Barcelona (IMB-CNM, CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Gorka Orive
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Rosa María Hernández
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Rosa Villa
- Instituto de Microelectronica de Barcelona (IMB-CNM, CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Jose Luis Pedraz
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Mar Alvarez
- Instituto de Microelectronica de Barcelona (IMB-CNM, CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain.
| |
Collapse
|
22
|
Ciuffreda MC, Malpasso G, Chokoza C, Bezuidenhout D, Goetsch KP, Mura M, Pisano F, Davies NH, Gnecchi M. Synthetic extracellular matrix mimic hydrogel improves efficacy of mesenchymal stromal cell therapy for ischemic cardiomyopathy. Acta Biomater 2018; 70:71-83. [PMID: 29341932 DOI: 10.1016/j.actbio.2018.01.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 12/28/2017] [Accepted: 01/08/2018] [Indexed: 01/09/2023]
Abstract
BACKGROUND Mesenchymal stromal cells (MSC) repair infarcted hearts mainly through paracrine mechanisms. Low cell engraftment limits the release of soluble paracrine factors (SF) over time and, consequently, MSC efficacy. We tested whether a synthetic extracellular matrix mimic, a hydrogel containing heparin (H-HG), could ameliorate MSC engraftment and binding/release of SF, thus improving MSC therapy efficacy. METHODS AND RESULTS In vitro, rat bone-marrow MSC (rBM-MSC) were seeded and grown into H-HG. Under normoxia, the hydrogel did not affect cell survival (rBM-MSC survival >90% at each time point tested); vice versa, under hypoxia the biomaterial resulted to be protective for the cells (p < .001 vs rBM-MSC alone). H-HG or control PEG hydrogels (HG) were incubated with VEGF or bFGF for binding/release quantification. Data showed significantly higher amount of VEGF and bFGF bound by H-HG compared with HG (p < .05) and a constant release over time. In vivo, myocardial infarction (MI) was induced in female Sprague Dawley rats by permanent coronary ligation. One week later, saline, rBM-MSC, H-HG or rBM-MSC/H-HG were injected in the infarct zone. The co-injection of rBM-MSC/H-HG into infarcted hearts significantly increased cardiac function. Importantly, we observed a significant gain in MSC engraftment, reduction of ventricular remodeling and stimulation of neo-vasculogenesis. We also documented higher amounts of several pro-angiogenic factors in hearts treated with rBM-MSC/H-HG. CONCLUSIONS Our data show that H-HG increases MSC engraftment, efficiently fine tunes the paracrine MSC actions and improves cardiac function in infarcted rat hearts. STATEMENT OF SIGNIFICANCE Transplantation of MSC is a promising treatment for ischemic heart disease, but low cell engraftment has so far limited its efficacy. The enzymatically degradable H-HG that we developed is able to increase MSC retention/engraftment and, at the same time, to fine-tune the paracrine effects mediated by the cells. Most importantly, the co-transplantation of MSC and H-HG in a rat model of ischemic cardiomyopathy improved heart function through a significant reduction in ventricular remodeling/scarring and amelioration in neo-vasculogenesis/endogenous cardiac regeneration. These beneficial effects are comparable to those obtained by others using a much greater number of cells, strengthening the efficacy of the biomaterial used in increasing the therapeutic effects of MSC. Given its efficacy and safety, documented by the absence of immunoreaction, our strategy appears readily translatable to clinical scenarios.
Collapse
Affiliation(s)
- Maria Chiara Ciuffreda
- Department of Medical Sciences and Infectious Diseases - Coronary Care Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Laboratory of Experimental Cardiology for Cell and Molecular Therapy, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Department of Molecular Medicine, Unit of Cardiology, University of Pavia, Italy
| | - Giuseppe Malpasso
- Department of Medical Sciences and Infectious Diseases - Coronary Care Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Laboratory of Experimental Cardiology for Cell and Molecular Therapy, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Department of Molecular Medicine, Unit of Cardiology, University of Pavia, Italy
| | - Cindy Chokoza
- Cardiovascular Research Unit, Chris Barnard Division of Cardiothoracic Surgery, University of Cape Town, Department of Health Sciences, Cape Town, South Africa
| | - Deon Bezuidenhout
- Cardiovascular Research Unit, Chris Barnard Division of Cardiothoracic Surgery, University of Cape Town, Department of Health Sciences, Cape Town, South Africa
| | - Kyle P Goetsch
- Cardiovascular Research Unit, Chris Barnard Division of Cardiothoracic Surgery, University of Cape Town, Department of Health Sciences, Cape Town, South Africa
| | - Manuela Mura
- Department of Medical Sciences and Infectious Diseases - Coronary Care Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Laboratory of Experimental Cardiology for Cell and Molecular Therapy, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Department of Molecular Medicine, Unit of Cardiology, University of Pavia, Italy
| | - Federica Pisano
- Department of Medical Sciences and Infectious Diseases - Coronary Care Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Laboratory of Experimental Cardiology for Cell and Molecular Therapy, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Department of Molecular Medicine, Unit of Cardiology, University of Pavia, Italy
| | - Neil H Davies
- Cardiovascular Research Unit, Chris Barnard Division of Cardiothoracic Surgery, University of Cape Town, Department of Health Sciences, Cape Town, South Africa
| | - Massimiliano Gnecchi
- Department of Medical Sciences and Infectious Diseases - Coronary Care Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Laboratory of Experimental Cardiology for Cell and Molecular Therapy, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Department of Molecular Medicine, Unit of Cardiology, University of Pavia, Italy; Department of Medicine, University of Cape Town, Cape Town, South Africa.
| |
Collapse
|
23
|
Tong X, Yang F. Recent Progress in Developing Injectable Matrices for Enhancing Cell Delivery and Tissue Regeneration. Adv Healthc Mater 2018; 7:e1701065. [PMID: 29280328 PMCID: PMC6425976 DOI: 10.1002/adhm.201701065] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/21/2017] [Indexed: 01/09/2023]
Abstract
Biomaterials are key factors in regenerative medicine. Matrices used for cell delivery are especially important, as they provide support to transplanted cells that is essential for promoting cell survival, retention, and desirable phenotypes. Injectable matrices have become promising and attractive due to their minimum invasiveness and ease of use. Conventional injectable matrices mostly use hydrogel precursor solutions that form solid, cell-laden hydrogel scaffolds in situ. However, these materials are associated with challenges in biocompatibility, shear-induced cell death, lack of control over cellular phenotype, lack of macroporosity and remodeling, and relatively weak mechanical strength. This Progress Report provides a brief overview of recent progress in developing injectable matrices to overcome the limitations of conventional in situ hydrogels. Biocompatible chemistry and shear-thinning hydrogels have been introduced to promote cell survival and retention. Emerging investigations of the effects of matrix properties on cellular function in 3D provide important guidelines for promoting desirable cellular phenotypes. Moreover, several novel approaches are combining injectability with macroporosity to achieve macroporous, injectable matrices for cell delivery.
Collapse
Affiliation(s)
- Xinming Tong
- Department of Orthopaedic Surgery, Stanford University School of Medicine, CA, 94305, United States.
| | - F. Yang
- Department of Orthopaedic Surgery and Bioengineering, Stanford University School of Medicine, 300 Pasteur Dr., Edwards R105, CA, 94305, United States.
| |
Collapse
|
24
|
Yang Y, Lin H, Shen H, Wang B, Lei G, Tuan RS. Mesenchymal stem cell-derived extracellular matrix enhances chondrogenic phenotype of and cartilage formation by encapsulated chondrocytes in vitro and in vivo. Acta Biomater 2018; 69:71-82. [PMID: 29317369 DOI: 10.1016/j.actbio.2017.12.043] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 12/27/2017] [Accepted: 12/29/2017] [Indexed: 01/24/2023]
Abstract
Mesenchymal stem cell derived extracellular matrix (MSC-ECM) is a natural biomaterial with robust bioactivity and good biocompatibility, and has been studied as a scaffold for tissue engineering. In this investigation, we tested the applicability of using decellularized human bone marrow derived MSC-ECM (hBMSC-ECM) as a culture substrate for chondrocyte expansion in vitro, as well as a scaffold for chondrocyte-based cartilage repair. hBMSC-ECM deposited by hBMSCs cultured on tissue culture plastic (TCP) was harvested, and then subjected to a decellularization process to remove hBMSCs. Compared with chondrocytes grown on TCP, chondrocytes seeded onto hBMSC-ECM exhibited significantly increased proliferation rate, and maintained better chondrocytic phenotype than TCP group. After being expanded to the same cell number and placed in high-density micromass cultures, chondrocytes from the ECM group showed better chondrogenic differentiation profile than those from the TCP group. To test cartilage formation ability, composites of hBMSC-ECM impregnated with chondrocytes were subjected to brief trypsin treatment to allow cell-mediated contraction, and folded to form 3-dimensional chondrocyte-impregnated hBMSC-ECM (Cell/ECM constructs). Upon culture in vitro in chondrogenic medium for 21 days, robust cartilage formation was observed in the Cell/ECM constructs. Similarly prepared Cell/ECM constructs were tested in vivo by subcutaneous implantation into SCID mice. Prominent cartilage formation was observed in the implanted Cell/ECM constructs 14 days post-implantation, with higher sGAG deposition compared to controls consisting of chondrocyte cell sheets. Taken together, these findings demonstrate that hBMSC-ECM is a superior culture substrate for chondrocyte expansion and a bioactive matrix potentially applicable for cartilage regeneration in vivo. STATEMENT OF SIGNIFICANCE Current cell-based treatments for focal cartilage defects face challenges, including chondrocyte dedifferentiation, need for xenogenic scaffolds, and suboptimal cartilage formation. We present here a novel technique that utilizes adult stem cell-derived extracellular matrix, as a culture substrate and/or encapsulation scaffold for human adult chondrocytes, for the repair of cartilage defects. Chondrocytes cultured in stem cell-derived matrix showed higher proliferation, better chondrocytic phenotype, and improved redifferentiation ability upon in vitro culture expansion. Most importantly, 3-dimensional constructs formed from chondrocytes folded within stem cell matrix manifested excellent cartilage formation both in vitro and in vivo. These findings demonstrate the suitability of stem cell-derived extracellular matrix as a culture substrate for chondrocyte expansion as well as a candidate bioactive matrix for cartilage regeneration.
Collapse
Affiliation(s)
- Yuanheng Yang
- Department of Orthopaedic Surgery, Xiangya hospital, Central South University, Changsha, Hunan, China; Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; The Third Xiangya hospital, Central South University, Changsha, Hunan, China
| | - Hang Lin
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - He Shen
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou, Jiangsu, China
| | - Bing Wang
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Guanghua Lei
- Department of Orthopaedic Surgery, Xiangya hospital, Central South University, Changsha, Hunan, China.
| | - Rocky S Tuan
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
| |
Collapse
|
25
|
La Francesca S, Aho JM, Barron MR, Blanco EW, Soliman S, Kalenjian L, Hanson AD, Todorova E, Marsh M, Burnette K, DerSimonian H, Odze RD, Wigle DA. Long-term regeneration and remodeling of the pig esophagus after circumferential resection using a retrievable synthetic scaffold carrying autologous cells. Sci Rep 2018; 8:4123. [PMID: 29515136 PMCID: PMC5841275 DOI: 10.1038/s41598-018-22401-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 02/21/2018] [Indexed: 02/07/2023] Open
Abstract
Treatment of esophageal disease can necessitate resection and reconstruction of the esophagus. Current reconstruction approaches are limited to utilization of an autologous conduit such as stomach, small bowel, or colon. A tissue engineered construct providing an alternative for esophageal replacement in circumferential, full thickness resection would have significant clinical applications. In the current study, we demonstrate that regeneration of esophageal tissue is feasible and reproducible in a large animal model using synthetic polyurethane electro-spun grafts seeded with autologous adipose-derived mesenchymal stem cells (aMSCs) and a disposable bioreactor. The scaffolds were not incorporated into the regrown esophageal tissue and were retrieved endoscopically. Animals underwent adipose tissue biopsy to harvest and expand autologous aMSCs for seeding on electro-spun polyurethane conduits in a bioreactor. Anesthetized pigs underwent full thickness circumferential resection of the mid-lower thoracic esophagus followed by implantation of the cell seeded scaffold. Results from these animals showed gradual structural regrowth of endogenous esophageal tissue, including squamous esophageal mucosa, submucosa, and smooth muscle layers with blood vessel formation. Scaffolds carrying autologous adipose-derived mesenchymal stem cells may provide an alternative to the use of a gastro-intestinal conduit for some patients following resection of the esophagus.
Collapse
Affiliation(s)
| | - Johnathon M Aho
- Division of Thoracic Surgery, Department of Surgery, Mayo Clinic, Rochester, MN, 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA
| | - Matthew R Barron
- Division of Thoracic Surgery, Department of Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Ellen W Blanco
- Division of Thoracic Surgery, Department of Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | | | | | | | | | | | | | | | - Robert D Odze
- Department of Pathology, Harvard Medical School, Boston, MA, 02115, USA
| | - Dennis A Wigle
- Division of Thoracic Surgery, Department of Surgery, Mayo Clinic, Rochester, MN, 55905, USA.
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA.
| |
Collapse
|
26
|
Meyers CA, Xu J, Zhang L, Asatrian G, Ding C, Yan N, Broderick K, Sacks J, Goyal R, Zhang X, Ting K, Péault B, Soo C, James AW. Early Immunomodulatory Effects of Implanted Human Perivascular Stromal Cells During Bone Formation. Tissue Eng Part A 2018; 24:448-457. [PMID: 28683667 PMCID: PMC5833257 DOI: 10.1089/ten.tea.2017.0023] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 06/06/2017] [Indexed: 01/20/2023] Open
Abstract
Human perivascular stem/stromal cells (PSC) are a multipotent mesodermal progenitor cell population defined by their perivascular residence. PSC are most commonly derived from subcutaneous adipose tissue, and recent studies have demonstrated the high potential for clinical translation of this fluorescence-activated cell sorting-derived cell population for bone tissue engineering. Specifically, purified PSC induce greater bone formation than unpurified stroma taken from the same patient sample. In this study, we examined the differences in early innate immune response to human PSC or unpurified stroma (stromal vascular fraction [SVF]) during the in vivo process of bone formation. Briefly, SVF or PSC from the same patient sample were implanted intramuscularly in the hindlimb of severe combined immunodeficient (SCID) mice using an osteoinductive demineralized bone matrix carrier. Histological examination of early inflammatory infiltrates was examined by hematoxylin and eosin and immunohistochemical staining (Ly-6G, F4/80). Results showed significantly greater neutrophilic and macrophage infiltrates within and around SVF in comparison to PSC-laden implants. Differences in early postoperative inflammation among SVF-laden implants were associated with reduced osteogenic differentiation and bone formation. Similar findings were recapitulated with PSC implantation in immunocompetent mice. Exaggerated postoperative inflammation was associated with increased IL-1α, IL-1β, IFN-γ, and TNF-α gene expression among SVF samples, and conversely increased IL-6 and IL-10 expression among PSC samples. These data document a robust immunomodulatory effect of implanted PSC, and an inverse correlation between host inflammatory cell infiltration and stromal progenitor cell-mediated ossification.
Collapse
Affiliation(s)
- Carolyn A. Meyers
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
| | - Jiajia Xu
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
| | - Lei Zhang
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, Shenyang, PR China
| | - Greg Asatrian
- Section of Orthodontics, Division of Growth and Development, School of Dentistry, University of California, Los Angeles, Los Angeles, California
| | - Catherine Ding
- Section of Orthodontics, Division of Growth and Development, School of Dentistry, University of California, Los Angeles, Los Angeles, California
| | - Noah Yan
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
| | - Kristen Broderick
- Department of Plastic Surgery, Johns Hopkins University, Baltimore, Maryland
| | - Justin Sacks
- Department of Plastic Surgery, Johns Hopkins University, Baltimore, Maryland
| | - Raghav Goyal
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
| | - Xinli Zhang
- Section of Orthodontics, Division of Growth and Development, School of Dentistry, University of California, Los Angeles, Los Angeles, California
| | - Kang Ting
- Section of Orthodontics, Division of Growth and Development, School of Dentistry, University of California, Los Angeles, Los Angeles, California
| | - Bruno Péault
- Center for Cardiovascular Science and MRC Center for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
- UCLA Orthopedic Hospital Department of Orthopedic Surgery and the Orthopedic Hospital Research Center, Los Angeles, California
| | - Chia Soo
- UCLA Orthopedic Hospital Department of Orthopedic Surgery and the Orthopedic Hospital Research Center, Los Angeles, California
- Division of Plastic and Reconstructive Surgery, Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Aaron W. James
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
- UCLA Orthopedic Hospital Department of Orthopedic Surgery and the Orthopedic Hospital Research Center, Los Angeles, California
| |
Collapse
|
27
|
Montgomery M, Ahadian S, Davenport Huyer L, Lo Rito M, Civitarese RA, Vanderlaan RD, Wu J, Reis LA, Momen A, Akbari S, Pahnke A, Li RK, Caldarone CA, Radisic M. Flexible shape-memory scaffold for minimally invasive delivery of functional tissues. Nat Mater 2017; 16:1038-1046. [PMID: 28805824 DOI: 10.1038/nmat4956] [Citation(s) in RCA: 206] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 07/04/2017] [Indexed: 06/07/2023]
Abstract
Despite great progress in engineering functional tissues for organ repair, including the heart, an invasive surgical approach is still required for their implantation. Here, we designed an elastic and microfabricated scaffold using a biodegradable polymer (poly(octamethylene maleate (anhydride) citrate)) for functional tissue delivery via injection. The scaffold's shape memory was due to the microfabricated lattice design. Scaffolds and cardiac patches (1 cm × 1 cm) were delivered through an orifice as small as 1 mm, recovering their initial shape following injection without affecting cardiomyocyte viability and function. In a subcutaneous syngeneic rat model, injection of cardiac patches was equivalent to open surgery when comparing vascularization, macrophage recruitment and cell survival. The patches significantly improved cardiac function following myocardial infarction in a rat, compared with the untreated controls. Successful minimally invasive delivery of human cell-derived patches to the epicardium, aorta and liver in a large-animal (porcine) model was achieved.
Collapse
Affiliation(s)
- Miles Montgomery
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Samad Ahadian
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Locke Davenport Huyer
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Mauro Lo Rito
- Division of Cardiovascular Surgery, Labatt Family Heart Centre, The Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada
- Department of Surgery, University of Toronto, Toronto, Ontario M5T 1P5, Canada
| | - Robert A Civitarese
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Rachel D Vanderlaan
- Division of Cardiovascular Surgery, Labatt Family Heart Centre, The Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada
- Department of Surgery, University of Toronto, Toronto, Ontario M5T 1P5, Canada
| | - Jun Wu
- Toronto General Research Institute, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Lewis A Reis
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Abdul Momen
- Toronto General Research Institute, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Saeed Akbari
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Aric Pahnke
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Ren-Ke Li
- Toronto General Research Institute, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Christopher A Caldarone
- Division of Cardiovascular Surgery, Labatt Family Heart Centre, The Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada
- Department of Surgery, University of Toronto, Toronto, Ontario M5T 1P5, Canada
| | - Milica Radisic
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
- Toronto General Research Institute, University Health Network, Toronto, Ontario M5G 1L7, Canada
| |
Collapse
|
28
|
Aoki T, Hui H, Umehara Y, LiCalzi S, Demetriou AA, Rozga J, Perfettit R. Intrasplenic Transplantation of Encapsulated Genetically Engineered Mouse Insulinoma Cells Reverses Streptozotocin-Induced Diabetes in Rats. Cell Transplant 2017; 14:411-21. [PMID: 16180660 DOI: 10.3727/000000005783982990] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Pancreatic islet transplantation is limited by shortage of donor organs. Although β-cell lines could be used, their secretion of insulin is characteristically glucose independent and immunoisolation is required. Here we show that intrasplenic transplantation of encapsulated glucose-responsive mouse insulinoma cells reversed streptozotocin (STZ)-induced diabetes in rats. MIN-6 cells derived from a transgenic mouse expressing SV 40 large T antigen in pancreatic β-cells were transfected with minigene encoding for human glucagon-like-peptide-1 under the control of rat insulin promoter. The cells were encapsulated in alginate/poly-L-lysine and used for cell transplantation in STZ-diabetic rats. Rats with nonfasting blood glucose (n-FBG) greater than 350 mg/dl were used. In group I rats (n = 6) 20 million encapsulated cells were injected into the spleen. Group II rats (n = 6) received empty capsules. n-FBG was measured biweekly. After 4 and 8 weeks, an intraperitoneal glucose tolerance test (IPGTT) was performed in group I; normal rats served as controls. Plasma insulin level was measured every other week (RIA). After 8 weeks, spleens were removed 1 day before sacrifice. In rats transplanted with cells the n-FBG was 100—150 mg/dl until the end of the study. After splenectomy, all cell recipients became diabetic (glucose 400 ± 20 mg/dl). Transplanted rats showed increase in body weight and insulin production (3.3 ± 1.0 ng/ml versus 0.92 ± 0.3 ng/ml; p < 0.01) and had normal IPGTT. Spleens contained capsules with insulin-positive cells. Overall, data from this work indicate that intrasplenic transplantation of xenogeneic encapsulated insulin-producing cells without immunosuppression reversed diabetes in rats. Excellent survival and function of the transplanted cells was due to the fact that the cells were separated from the bloodstream by the immunoisolatory membrane only and insulin was delivered directly to the liver (i.e., in a physiological manner).
Collapse
Affiliation(s)
- Takeshi Aoki
- Surgical Research, Department of Surgery, Cedars-Sinai Medical Center, David Geffen UCLA School of Medicine, Los Angeles, CA 90048, USA
| | | | | | | | | | | | | |
Collapse
|
29
|
Abstract
The microencapsulation of different types of cells that are able to produce therapeutic factors is being investigated for the treatment of several human diseases. Most efforts are focused on chronic and degenerative diseases as this strategy could become an alternative to some commonly used parenteral treatments that need to be repeatedly administered. But, this approach has also been investigated in the field of oncology with the aim of providing immunomodulatory antibodies that are able to enhance the patient's inherent immune response against the tumor. These kind of treatments would provide the patient with the therapeutic drug produced in situ, de novo, and in a sustained way, making the therapy more comfortable.Although different devices are nowadays available to produce cell-enclosing alginate-microcapsules, here, we describe the most important steps and advices in order to fabricate alginate-poly-L-lysine-alginate microcapsules containing hybridoma cells for cancer management using an electrostatic bead generator, and how to evaluate the viability of those cells over the time.
Collapse
Affiliation(s)
- L Saenz del Burgo
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
- Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - J Ciriza
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
- Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - R M Hernández
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
- Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - G Orive
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
- Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - J L Pedraz
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain.
- Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain.
| |
Collapse
|
30
|
McQuilling JP, Sittadjody S, Pareta R, Pendergraft S, Clark CJ, Farney AC, Opara EC. Retrieval of Microencapsulated Islet Grafts for Post-transplant Evaluation. Methods Mol Biol 2017; 1479:157-171. [PMID: 27738934 PMCID: PMC6889066 DOI: 10.1007/978-1-4939-6364-5_12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Microencapsulation of islets is a procedure used to immunoisolate islets in order to obviate the need for immunosuppression of islet transplant recipients. Although microencapsulated islets have routinely been transplanted in the peritoneal cavity, the ideal site for their engraftment remains to be determined. The omentum, a highly vascularized tissue, has been proposed as an alternative site for microencapsulated islet transplantation. An added benefit to the omentum is that implanted microcapsules can be easily retrieved for post-transplant evaluation. This chapter describes a collagenase-based procedure for the retrieval of microencapsulated islets following the harvest of omentum pouch site of transplantation.
Collapse
Affiliation(s)
- John Patrick McQuilling
- Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Blvd., Winston-Salem, NC, 27157, USA
- Virginia Tech, Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem, NC, 27157, USA
| | - Sivanandane Sittadjody
- Wake Forest Institute forRegenerative Medicine, Wake Forest School of Medicine, Medical Center Blvd., Winston-Salem, NC, 27157, USA
| | - Rajesh Pareta
- Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Blvd., Winston-Salem, NC, 27157, USA
| | - Samuel Pendergraft
- Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Blvd., Winston-Salem, NC, 27157, USA
| | - Clancy J Clark
- Department of Surgery, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Alan C Farney
- Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Blvd., Winston-Salem, NC, 27157, USA
- Department of Surgery, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Emmanuel C Opara
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA.
- Virginia Tech-Wake Forest School of Biomedical Engineering & Sciences (SBES), Wake Forest School of Medicine, Winston-Salem, NC, USA.
| |
Collapse
|
31
|
Abstract
The diameter and sphericity of alginate-poly-L-lysine-alginate microcapsules, determined by the size and the shape of calcium alginate microspheres, affect their in vivo durability and biocompatibility and the results of transplantation. The commonly used air-jet spray method generates microspheres with a wider variation in diameter, larger sphere morphology, and evenly distributed encapsulated cells. In order to overcome these drawbacks, we designed a field effect microparticle generator to create a stable electric field to prepare microparticles with a smaller diameter and more uniform morphology. Using this electric field microparticle generator the encapsulated cells will be located at the periphery of the microspheres, and thus the supply of oxygen and nutrients for the encapsulated cells will be improved compared with the centrally located encapsulated cells in the air-jet spray method.
Collapse
Affiliation(s)
- Brend Ray-Sea Hsu
- Division of Endocrinology and Metabolism, Department of Internal Medicine, and School of Traditional Chinese Medicine, College of Medicine, Chang-Gung Memorial Hospital and Chang Gung University, No. 5, Fushin Street, Kweishan County, Taoyuan, Taiwan.
| | - Shin-Huei Fu
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan
| |
Collapse
|
32
|
Abstract
Hydrogel microcapsules have been used for decades to encapsulate cells and treat diseases ranging from neurodegenerative disorders to more systemic applications like Type I Diabetes. This cell encapsulation modality has been developed through more cumulative experiments than perhaps any other, owing to the relative ease of accessing the required materials, the commercial availability of droplet-generating instrumentation, and the mild microenvironment and unique permeability properties of hydrogels that are difficult to attain with alternative encapsulation systems employing thermoplastic materials. Because of their size and shape, microcapsules have an inherent advantage over macroencapsulation devices due to the more favorable surface area to volume ratio, which allows for greater efficiency in the amount of cellular cargo that is entrapped and enhanced nutrient exchange and efflux of secreted products. Unfortunately, with this significant positive benefit comes the caveat of difficult or impractical retrievability, highlighting the paradox that is particularly relevant as differentiated stem cell sources become more readily available. This chapter focuses on several techniques that can be used to evaluate the permeability and pore structure of hydrogel microcapsules, including a simplistic model for describing the diffusive behavior of alginate-polycation-alginate (APA) microcapsules with a liquid core, and an ancillary method to evaluate the ultrastructure of the APA membrane including morphometric analysis.
Collapse
Affiliation(s)
- D M Lavin
- Cytosolv, Inc., 117 Chapman St., Suite 107, Providence, RI, USA
- Brown University, Providence, RI, USA
| | - B E Bintz
- Cytosolv, Inc., 117 Chapman St., Suite 107, Providence, RI, USA
- Brown University, Providence, RI, USA
| | - C G Thanos
- Cytosolv, Inc., 117 Chapman St., Suite 107, Providence, RI, USA.
| |
Collapse
|
33
|
Abstract
Cell encapsulation is an alternative to avoid rejection of grafted tissue, thus bringing an interesting alternative in cell therapy. It is particularly relevant in ailments where only the implant of small quantities of tissues is warranted. In such circumstances, the use of immunosuppressive therapy in patients implanted with tissues from donors is debatable, yet unavoidable at present in order to prevent rejection and/or sensitization of the host to the tissue, in turn jeopardizing the success of successive implants. Hence, a new line of thought, which aims to provide an immunoprivileged site for the grafted tissue, while at the same time insure its nutrition, as well as its survival and continued function, appears as a most attractive possibility. To achieve these goals, cells or tissues harvested for transplant could be encapsulated in biologically compatible matrices. Among the matrices currently in existence, sodium alginate is the most widely used polymer for tissue encapsulation.In the present chapter, we present a technique used to encapsulate parathyroid tissue, for use as cell transplant therapy in patients with secondary hypoparathyroidism. With this procedure, implanted tissue survives and remains functional for up to 18 months.
Collapse
Affiliation(s)
- Patricio Cabané Toledo
- Head and Neck Surgeon, University of Chile Clinical Hospital, Independencia, Santiago de Chile, Chile.
| | - Ricardo L Rossi
- Department of Surgery of Clínica Alemana de Santiago, Independencia, Santiago de Chile, Chile
| | - Pablo Caviedes
- Molecular & Clinical Pharmacology Program, ICBM, Faculty of Medicine, University of Chile, Independencia, Santiago de Chile, Chile
| |
Collapse
|
34
|
Abstract
Application of microencapsulation to the immunoisolation of pancreatic islets holds promise for expanding the use of islet transplantation as a treatment option for Type 1 diabetes. It is generally believed that successful development of a reliable methodology will ideally allow for transplantation of pancreatic islets that are protected from the immune system, thereby obviating the need for the use of immunosuppressive drugs and their attendant side effects. In addition, this technology has the potential to expand the donor pool as islets from nonhuman donors could be used as xenografts in human patients. The complex polysaccharide, alginate, has been the most widely used polymer for microencapsulation of islets. However, it is known that alginate lacks appreciable permselectivity to confer immunoisolation of encapsulated islets, thus necessitating the routine permselective coating of alginate microbeads with polymers of amino acids, mainly, poly-L-lysine (PLL) and poly-L-ornithine (PLO). The protocol described in this chapter outlines the steps we have used in our studies on perm-selective coating of alginate microbeads for islet transplantation.
Collapse
Affiliation(s)
- William F Kendall
- Department of Surgery, Sanford Health, 1508 W 22nd Street Suite 101, Sioux Falls, SD, 57105, USA.
| | - Emmanuel C Opara
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Virginia Tech-Wake Forest School of Biomedical Engineering & Sciences (SBES), Wake Forest School of Medicine, Winston-Salem, NC, USA
| |
Collapse
|
35
|
Abstract
Allogeneic islet transplantation has become a viable treatment for patients with unstable type 1 diabetes; however, donor shortage and the necessity for immunosuppressive drugs are the major drawbacks of this approach. Microencapsulated porcine islet xenotransplantation could solve these drawbacks. Clinical porcine islet xenotransplantation as well as microencapsulated islet transplantation has been conducted without significant side effects. However, these transplantations are not as efficacious as allogeneic naked islet transplantation. High quality porcine islets, biocompatible capsules, and appropriate implant sites should be the key factors for improving efficacy. With improved efficacy, microencapsulated islet xenotransplantation will solve the major drawbacks associated with current islet transplantation.
Collapse
Affiliation(s)
- Masayuki Shimoda
- National Institute for Global Health and Medicine, 1-21-1 Toyama Shinjuku-ku, Tokyo, 162-8655, Japan
| | - Shinichi Matsumoto
- National Center for Global Health and Medicine, Tokyo, Japan.
- Otsuka Pharmaceutical Factory Inc., Naruto, Japan.
| |
Collapse
|
36
|
Bruin JE, Saber N, O'Dwyer S, Fox JK, Mojibian M, Arora P, Rezania A, Kieffer TJ. Hypothyroidism Impairs Human Stem Cell-Derived Pancreatic Progenitor Cell Maturation in Mice. Diabetes 2016; 65:1297-309. [PMID: 26740603 DOI: 10.2337/db15-1439] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 12/29/2015] [Indexed: 11/13/2022]
Abstract
Pancreatic progenitors derived from human embryonic stem cells (hESCs) are a potential source of transplantable cells for treating diabetes and are currently being tested in clinical trials. Yet, how the milieu of pancreatic progenitor cells, including exposure to different factors after transplant, may influence their maturation remains unclear. Here, we examined the effect of thyroid dysregulation on the development of hESC-derived progenitor cells in vivo. Hypothyroidism was generated in SCID-beige mice using an iodine-deficient diet containing 0.15% propyl-2-thiouracil, and hyperthyroidism was generated by addition of L-thyroxine (T4) to drinking water. All mice received macroencapsulated hESC-derived progenitor cells, and thyroid dysfunction was maintained for the duration of the study ("chronic") or for 4 weeks posttransplant ("acute"). Acute hyperthyroidism did not affect graft function, but acute hypothyroidism transiently impaired human C-peptide secretion at 16 weeks posttransplant. Chronic hypothyroidism resulted in severely blunted basal human C-peptide secretion, impaired glucose-stimulated insulin secretion, and elevated plasma glucagon levels. Grafts from chronic hypothyroid mice contained fewer β-cells, heterogenous MAFA expression, and increased glucagon(+) and ghrelin(+) cells compared to grafts from euthyroid mice. Taken together, these data suggest that long-term thyroid hormone deficiency may drive the differentiation of human pancreatic progenitor cells toward α- and ε-cell lineages at the expense of β-cell formation.
Collapse
MESH Headings
- Animals
- Antithyroid Agents/poisoning
- Biomarkers/blood
- Biomarkers/metabolism
- Cell Differentiation
- Cell Line
- Cells, Immobilized/cytology
- Cells, Immobilized/pathology
- Cells, Immobilized/transplantation
- Diabetes Mellitus, Type 1/complications
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 1/surgery
- Disease Models, Animal
- Heterografts/cytology
- Heterografts/metabolism
- Heterografts/pathology
- Human Embryonic Stem Cells/cytology
- Human Embryonic Stem Cells/metabolism
- Human Embryonic Stem Cells/pathology
- Human Embryonic Stem Cells/transplantation
- Humans
- Hyperthyroidism/chemically induced
- Hyperthyroidism/complications
- Hypothyroidism/complications
- Hypothyroidism/etiology
- Insulin-Secreting Cells/cytology
- Insulin-Secreting Cells/metabolism
- Insulin-Secreting Cells/pathology
- Insulin-Secreting Cells/transplantation
- Iodine/deficiency
- Male
- Mice, SCID
- Propylthiouracil/poisoning
- Random Allocation
- Thyroxine/poisoning
- Transplantation, Heterologous
- Transplantation, Heterotopic
Collapse
Affiliation(s)
- Jennifer E Bruin
- Laboratory of Molecular and Cellular Medicine, Department of Cellular & Physiological Sciences, Life Sciences Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Nelly Saber
- Laboratory of Molecular and Cellular Medicine, Department of Cellular & Physiological Sciences, Life Sciences Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Shannon O'Dwyer
- Laboratory of Molecular and Cellular Medicine, Department of Cellular & Physiological Sciences, Life Sciences Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Jessica K Fox
- Laboratory of Molecular and Cellular Medicine, Department of Cellular & Physiological Sciences, Life Sciences Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Majid Mojibian
- Laboratory of Molecular and Cellular Medicine, Department of Cellular & Physiological Sciences, Life Sciences Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Payal Arora
- BetaLogics Venture, Janssen R&D, LLC, Raritan, NJ
| | | | - Timothy J Kieffer
- Laboratory of Molecular and Cellular Medicine, Department of Cellular & Physiological Sciences, Life Sciences Institute, The University of British Columbia, Vancouver, British Columbia, Canada Department of Surgery, The University of British Columbia, Vancouver, British Columbia, Canada
| |
Collapse
|
37
|
Robinson ST, Douglas AM, Chadid T, Kuo K, Rajabalan A, Li H, Copland IB, Barker TH, Galipeau J, Brewster LP. A novel platelet lysate hydrogel for endothelial cell and mesenchymal stem cell-directed neovascularization. Acta Biomater 2016; 36:86-98. [PMID: 26961805 DOI: 10.1016/j.actbio.2016.03.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 02/24/2016] [Accepted: 03/01/2016] [Indexed: 12/16/2022]
Abstract
UNLABELLED Mesenchymal stem cells (MSC) hold promise in promoting vascular regeneration of ischemic tissue in conditions like critical limb ischemia of the leg. However, this approach has been limited in part by poor cell retention and survival after delivery. New biomaterials offer an opportunity to localize cells to the desired tissue after delivery, but also to improve cell survival after delivery. Here we characterize the mechanical and microstructural properties of a novel hydrogel composed of pooled human platelet lysate (PL) and test its ability to promote MSC angiogenic activity using clinically relevant in vitro and in vivo models. This PL hydrogel had comparable storage and loss modulus and behaved as a viscoelastic solid similar to fibrin hydrogels despite having 1/4-1/10th the fibrin content of standard fibrin gels. Additionally, PL hydrogels enabled sustained release of endogenous PDGF-BB for up to 20days and were resistant to protease degradation. PL hydrogel stimulated pro-angiogenic activity by promoting human MSC growth and invasion in a 3D environment, and enhancing endothelial cell sprouting alone and in co-culture with MSCs. When delivered in vivo, the combination of PL and human MSCs improved local tissue perfusion after 8days compared to controls when assessed with laser Doppler perfusion imaging in a murine model of hind limb ischemia. These results support the use of a PL hydrogel as a scaffold for MSC delivery to promote vascular regeneration. STATEMENT OF SIGNIFICANCE Innovative strategies for improved retention and viability of mesenchymal stem cells (MSCs) are needed for cellular therapies. Human platelet lysate is a potent serum supplement that improves the expansion of MSCs. Here we characterize our novel PL hydrogel's desirable structural and biologic properties for human MSCs and endothelial cells. PL hydrogel can localize cells for retention in the desired tissue, improves cell viability, and augments MSCs' angiogenic activity. As a result of these unique traits, PL hydrogel is ideally suited to serve as a cell delivery vehicle for MSCs injected into ischemic tissues to promote vascular regeneration, as demonstrated here in a murine model of hindlimb ischemia.
Collapse
Affiliation(s)
| | - Alison M Douglas
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30322, USA
| | - Tatiana Chadid
- Emory University, Department of Surgery, Atlanta, GA 30322, USA
| | - Katie Kuo
- Emory University, Department of Surgery, Atlanta, GA 30322, USA
| | - Ajai Rajabalan
- Emory University, Department of Surgery, Atlanta, GA 30322, USA
| | - Haiyan Li
- Emory University, Department of Surgery, Atlanta, GA 30322, USA
| | - Ian B Copland
- Emory University, Department of Hematology and Oncology, Winship Cancer Institute, Atlanta, GA 30322, USA
| | - Thomas H Barker
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30322, USA
| | - Jacques Galipeau
- Emory University, Department of Hematology and Oncology, Winship Cancer Institute, Atlanta, GA 30322, USA
| | - Luke P Brewster
- Emory University, Department of Surgery, Atlanta, GA 30322, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30322, USA; Atlanta Veterans Affairs Medical Center, Surgical and Research Services, Decatur, GA 30030, USA.
| |
Collapse
|
38
|
Vilariño-Feltrer G, Martínez-Ramos C, Monleón-de-la-Fuente A, Vallés-Lluch A, Moratal D, Barcia Albacar JA, Monleón Pradas M. Schwann-cell cylinders grown inside hyaluronic-acid tubular scaffolds with gradient porosity. Acta Biomater 2016; 30:199-211. [PMID: 26518102 DOI: 10.1016/j.actbio.2015.10.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 10/21/2015] [Accepted: 10/26/2015] [Indexed: 11/19/2022]
Abstract
Cell transplantation therapies in the nervous system are frequently hampered by glial scarring and cell drain from the damaged site, among others. To improve this situation, new biomaterials may be of help. Here, novel single-channel tubular conduits based on hyaluronic acid (HA) with and without poly-l-lactide acid fibers in their lumen were fabricated. Rat Schwann cells were seeded within the conduits and cultured for 10days. The conduits possessed a three-layered porous structure that impeded the leakage of the cells seeded in their interior and made them impervious to cell invasion from the exterior, while allowing free transport of nutrients and other molecules needed for cell survival. The channel's surface acted as a template for the formation of a cylindrical sheath-like tapestry of Schwann cells continuously spanning the whole length of the lumen. Schwann-cell tubes having a diameter of around 0.5mm and variable lengths can thus be generated. This structure is not found in nature and represents a truly engineered tissue, the outcome of the specific cell-material interactions. The conduits might be useful to sustain and protect cells for transplantation, and the biohybrids here described, together with neuronal precursors, might be of help in building bridges across significant distances in the central and peripheral nervous system. STATEMENT OF SIGNIFICANCE The paper entitled "Schwann-cell cylinders grown inside hyaluronic-acid tubular scaffolds with gradient porosity" reports on the development of a novel tubular scaffold and on how this scaffold acts on Schwann cells seeded in its interior as a template to produce macroscopic hollow continuous cylinders of tightly joined Schwann cells. This cellular structure is not found in nature and represents a truly engineered novel tissue, which obtains as a consequence of the specific cell-material interactions within the scaffold.
Collapse
Affiliation(s)
- G Vilariño-Feltrer
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - C Martínez-Ramos
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - A Monleón-de-la-Fuente
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - A Vallés-Lluch
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - D Moratal
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - J A Barcia Albacar
- Servicio de Neurocirugía, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), C/ Profesor Martín Lagos, S/N, Madrid 28040, Spain
| | - M Monleón Pradas
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain.
| |
Collapse
|
39
|
Maiborodin IV, Matveyeva VA, Maslov RV, Onopriyenko NV, Kuznetsova IV, Chastikin GA, Anikeyev AA. [SOME REACTIONS OF THE REGIONAL LYMPH NODES OF RATS AFTER IMPLANTATION OF MULTIPOTENT STROMAL CELLS ADSORBED ON POLYHYDROXYALKANOATE INTO A BONE TISSUE DEFECT]. Morfologiia 2016; 149:21-26. [PMID: 30136790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The reactions of the regional lymph nodes, caused by implantation of the autologous multipotent stromal cells of bone marrow origin (AMSCBMO) to accelerate the healing of mandibular bone defect were studied by fluorescent microscopy in inbred male Wag rats aged 6 months (n=62). After the introduction of polyhydroxyalkanoate transplant containing adsorbed AMSCBMO with a transfected Green Fluorescent Protein (GFP) gene into a damaged bone area, the lymphoid nodules in submandibular lymph nodes demonstrated the appearance of numerous large macrophages containing multiple oval fluorescent inclusions in the cytoplasm. The number of these macrophages increased within 2 weeks after surgery and then began to decline. Apparently, AMSCBMO introduced in this way, were partially absorbed by macrophages. After destruction of the structures formed from AMSCBMO, the debris was also phagocytized by macrophages. In either case, these macrophages appeared in the germinal centers of lymphoid nodules in lymph nodes, where the induction of immune responses against DNA and GFP protein was probable.
Collapse
|
40
|
Song W, Lu YC, Frankel AS, An D, Schwartz RE, Ma M. Engraftment of human induced pluripotent stem cell-derived hepatocytes in immunocompetent mice via 3D co-aggregation and encapsulation. Sci Rep 2015; 5:16884. [PMID: 26592180 PMCID: PMC4655358 DOI: 10.1038/srep16884] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 10/01/2015] [Indexed: 12/17/2022] Open
Abstract
Cellular therapies for liver diseases and in vitro models for drug testing both require functional human hepatocytes (Hum-H), which have unfortunately been limited due to the paucity of donor liver tissues. Human pluripotent stem cells (hPSCs) represent a promising and potentially unlimited cell source to derive Hum-H. However, the hepatic functions of these hPSC-derived cells to date are not fully comparable to adult Hum-H and are more similar to fetal ones. In addition, it has been challenging to obtain functional hepatic engraftment of these cells with prior studies having been done in immunocompromised animals. In this report, we demonstrated successful engraftment of human induced pluripotent stem cell (iPSC)-derived hepatocyte-like cells (iPS-H) in immunocompetent mice by pre-engineering 3D cell co-aggregates with stromal cells (SCs) followed by encapsulation in recently developed biocompatible hydrogel capsules. Notably, upon transplantation, human albumin and α1-antitrypsin (A1AT) in mouse sera secreted by encapsulated iPS-H/SCs aggregates reached a level comparable to the primary Hum-H/SCs control. Further immunohistochemistry of human albumin in retrieved cell aggregates confirmed the survival and function of iPS-H. This proof-of-concept study provides a simple yet robust approach to improve the engraftment of iPS-H, and may be applicable to many stem cell-based therapies.
Collapse
Affiliation(s)
- Wei Song
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Yen-Chun Lu
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Angela S. Frankel
- Division of Gastroenterology & Hepatology, Department of Medicine, Weill Medical College of Cornell University, New York, NY 10021, USA
| | - Duo An
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Robert E. Schwartz
- Division of Gastroenterology & Hepatology, Department of Medicine, Weill Medical College of Cornell University, New York, NY 10021, USA
| | - Minglin Ma
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14850, USA
| |
Collapse
|
41
|
Agulnick AD, Ambruzs DM, Moorman MA, Bhoumik A, Cesario RM, Payne JK, Kelly JR, Haakmeester C, Srijemac R, Wilson AZ, Kerr J, Frazier MA, Kroon EJ, D'Amour KA. Insulin-Producing Endocrine Cells Differentiated In Vitro From Human Embryonic Stem Cells Function in Macroencapsulation Devices In Vivo. Stem Cells Transl Med 2015; 4:1214-22. [PMID: 26304037 DOI: 10.5966/sctm.2015-0079] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 06/24/2015] [Indexed: 12/11/2022] Open
Abstract
UNLABELLED The PEC-01 cell population, differentiated from human embryonic stem cells (hESCs), contains pancreatic progenitors (PPs) that, when loaded into macroencapsulation devices (to produce the VC-01 candidate product) and transplanted into mice, can mature into glucose-responsive insulin-secreting cells and other pancreatic endocrine cells involved in glucose metabolism. We modified the protocol for making PEC-01 cells such that 73%-80% of the cell population consisted of PDX1-positive (PDX1+) and NKX6.1+ PPs. The PPs were further differentiated to islet-like cells (ICs) that reproducibly contained 73%-89% endocrine cells, of which approximately 40%-50% expressed insulin. A large fraction of these insulin-positive cells were single hormone-positive and expressed the transcription factors PDX1 and NKX6.1. To preclude a significant contribution of progenitors to the in vivo function of ICs, we used a simple enrichment process to remove remaining PPs, yielding aggregates that contained 93%-98% endocrine cells and 1%-3% progenitors. Enriched ICs, when encapsulated and implanted into mice, functioned similarly to the VC-01 candidate product, demonstrating conclusively that in vitro-produced hESC-derived insulin-producing cells can mature and function in vivo in devices. A scaled version of our suspension culture was used, and the endocrine aggregates could be cryopreserved and retain functionality. Although ICs expressed multiple important β cell genes, the cells contained relatively low levels of several maturity-associated markers. Correlating with this, the time to function of ICs was similar to PEC-01 cells, indicating that ICs required cell-autonomous maturation after delivery in vivo, which would occur concurrently with graft integration into the host. SIGNIFICANCE Type 1 diabetes (T1D) affects approximately 1.25 million people in the U.S. alone and is deadly if not managed with insulin injections. This paper describes the production of insulin-producing cells in vitro and a new protocol for producing the cells, representing another potential cell source for a diabetes cell therapy. These cells can be loaded into a protective device that is implanted under the skin. The device is designed to protect the cells from immune rejection by the implant recipient. The implant can engraft and respond to glucose by secreting insulin, thus potentially replacing the β cells lost in patients with T1D.
Collapse
|
42
|
Daviaud N, Garbayo E, Sindji L, Martínez-Serrano A, Schiller PC, Montero-Menei CN. Survival, differentiation, and neuroprotective mechanisms of human stem cells complexed with neurotrophin-3-releasing pharmacologically active microcarriers in an ex vivo model of Parkinson's disease. Stem Cells Transl Med 2015; 4:670-84. [PMID: 25925835 DOI: 10.5966/sctm.2014-0139] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 03/05/2015] [Indexed: 12/13/2022] Open
Abstract
UNLABELLED Stem cell-based regenerative therapies hold great potential for the treatment of degenerative disorders such as Parkinson's disease (PD). We recently reported the repair and functional recovery after treatment with human marrow-isolated adult multilineage inducible (MIAMI) cells adhered to neurotrophin-3 (NT3) releasing pharmacologically active microcarriers (PAMs) in hemiparkinsonian rats. In order to comprehend this effect, the goal of the present work was to elucidate the survival, differentiation, and neuroprotective mechanisms of MIAMI cells and human neural stem cells (NSCs), both adhering to NT3-releasing PAMs in an ex vivo organotypic model of nigrostriatal degeneration made from brain sagittal slices. It was shown that PAMs led to a marked increase in MIAMI cell survival and neuronal differentiation when releasing NT3. A significant neuroprotective effect of MIAMI cells adhering to PAMs was also demonstrated. NSCs barely had a neuroprotective effect and differentiated mostly into dopaminergic neuronal cells when adhering to PAM-NT3. Moreover, those cells were able to release dopamine in a sufficient amount to induce a return to baseline levels. Reverse transcription-quantitative polymerase chain reaction and enzyme-linked immunosorbent assay analyses identified vascular endothelial growth factor (VEGF) and stanniocalcin-1 as potential mediators of the neuroprotective effect of MIAMI cells and NSCs, respectively. It was also shown that VEGF locally stimulated tissue vascularization, which might improve graft survival, without excluding a direct neuroprotective effect of VEGF on dopaminergic neurons. These results indicate a prospective interest of human NSC/PAM and MIAMI cell/PAM complexes in tissue engineering for PD. SIGNIFICANCE Stem cell-based regenerative therapies hold great potential for the treatment of degenerative disorders such as Parkinson's disease (PD). The present work elucidates and compares the survival, differentiation, and neuroprotective mechanisms of marrow-isolated adult multilineage inducible cells and human neural stem cells both adhered to neurotrophin-3-releasing pharmacologically active microcarriers in an ex vivo organotypic model of PD made from brain sagittal slices.
Collapse
Affiliation(s)
- Nicolas Daviaud
- INSERM U1066, Micro et nanomédecines biomimétiques, Angers, France; L'université Nantes, Angers, Le Mans, Angers University, Angers, France; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Pamplona, Spain; Department of Molecular Biology and Center of Molecular Biology "Severo Ochoa," Autonomous University of Madrid-Consejo Superior de Investigaciones Científicas, Campus Cantoblanco, Madrid, Spain; Miami Veterans Healthcare System, Department of Orthopedics, and Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Elisa Garbayo
- INSERM U1066, Micro et nanomédecines biomimétiques, Angers, France; L'université Nantes, Angers, Le Mans, Angers University, Angers, France; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Pamplona, Spain; Department of Molecular Biology and Center of Molecular Biology "Severo Ochoa," Autonomous University of Madrid-Consejo Superior de Investigaciones Científicas, Campus Cantoblanco, Madrid, Spain; Miami Veterans Healthcare System, Department of Orthopedics, and Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Laurence Sindji
- INSERM U1066, Micro et nanomédecines biomimétiques, Angers, France; L'université Nantes, Angers, Le Mans, Angers University, Angers, France; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Pamplona, Spain; Department of Molecular Biology and Center of Molecular Biology "Severo Ochoa," Autonomous University of Madrid-Consejo Superior de Investigaciones Científicas, Campus Cantoblanco, Madrid, Spain; Miami Veterans Healthcare System, Department of Orthopedics, and Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Alberto Martínez-Serrano
- INSERM U1066, Micro et nanomédecines biomimétiques, Angers, France; L'université Nantes, Angers, Le Mans, Angers University, Angers, France; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Pamplona, Spain; Department of Molecular Biology and Center of Molecular Biology "Severo Ochoa," Autonomous University of Madrid-Consejo Superior de Investigaciones Científicas, Campus Cantoblanco, Madrid, Spain; Miami Veterans Healthcare System, Department of Orthopedics, and Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Paul C Schiller
- INSERM U1066, Micro et nanomédecines biomimétiques, Angers, France; L'université Nantes, Angers, Le Mans, Angers University, Angers, France; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Pamplona, Spain; Department of Molecular Biology and Center of Molecular Biology "Severo Ochoa," Autonomous University of Madrid-Consejo Superior de Investigaciones Científicas, Campus Cantoblanco, Madrid, Spain; Miami Veterans Healthcare System, Department of Orthopedics, and Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Claudia N Montero-Menei
- INSERM U1066, Micro et nanomédecines biomimétiques, Angers, France; L'université Nantes, Angers, Le Mans, Angers University, Angers, France; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Pamplona, Spain; Department of Molecular Biology and Center of Molecular Biology "Severo Ochoa," Autonomous University of Madrid-Consejo Superior de Investigaciones Científicas, Campus Cantoblanco, Madrid, Spain; Miami Veterans Healthcare System, Department of Orthopedics, and Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida, USA
| |
Collapse
|
43
|
Motté E, Szepessy E, Suenens K, Stangé G, Bomans M, Jacobs-Tulleneers-Thevissen D, Ling Z, Kroon E, Pipeleers D. Composition and function of macroencapsulated human embryonic stem cell-derived implants: comparison with clinical human islet cell grafts. Am J Physiol Endocrinol Metab 2014; 307:E838-46. [PMID: 25205822 DOI: 10.1152/ajpendo.00219.2014] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
β-Cells generated from large-scale sources can overcome current shortages in clinical islet cell grafts provided that they adequately respond to metabolic variations. Pancreatic (non)endocrine cells can develop from human embryonic stem (huES) cells following in vitro derivation to pancreatic endoderm (PE) that is subsequently implanted in immune-incompetent mice for further differentiation. Encapsulation of PE increases the proportion of endocrine cells in subcutaneous implants, with enrichment in β-cells when they are placed in TheraCyte-macrodevices and predominantly α-cells when they are alginate-microencapsulated. At posttransplant (PT) weeks 20-30, macroencapsulated huES implants presented higher glucose-responsive plasma C-peptide levels and a lower proinsulin-over-C-peptide ratio than human islet cell implants under the kidney capsule. Their ex vivo analysis showed the presence of single-hormone-positive α- and β-cells that exhibited rapid secretory responses to increasing and decreasing glucose concentrations, similar to isolated human islet cells. However, their insulin secretory amplitude was lower, which was attributed in part to a lower cellular hormone content; it was associated with a lower glucose-induced insulin biosynthesis, but not with lower glucagon-induced stimulation, which together is compatible with an immature functional state of the huES-derived β-cells at PT weeks 20-30. These data support the therapeutic potential of macroencapsulated huES implants but indicate the need for further functional analysis. Their comparison with clinical-grade human islet cell grafts sets references for future development and clinical translation.
Collapse
MESH Headings
- Animals
- C-Peptide/blood
- C-Peptide/metabolism
- Cell Differentiation
- Cell Line
- Cells, Immobilized/cytology
- Cells, Immobilized/metabolism
- Cells, Immobilized/transplantation
- Crosses, Genetic
- Diabetes Mellitus, Type 1/blood
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 1/surgery
- Embryonic Stem Cells/cytology
- Embryonic Stem Cells/metabolism
- Embryonic Stem Cells/transplantation
- Glucagon-Secreting Cells/cytology
- Glucagon-Secreting Cells/metabolism
- Humans
- Implants, Experimental/adverse effects
- Insulin-Secreting Cells/cytology
- Insulin-Secreting Cells/metabolism
- Islets of Langerhans Transplantation/adverse effects
- Kidney
- Membranes
- Mice, Inbred NOD
- Mice, SCID
- Proinsulin/blood
- Proinsulin/metabolism
- Subcutaneous Tissue
- Tissue Scaffolds/adverse effects
- Transplantation, Heterologous/adverse effects
- Transplantation, Heterotopic/adverse effects
Collapse
Affiliation(s)
- Evi Motté
- Diabetes Research Center, Brussels Free University-Vrije Universiteit Brussel, Brussels, Belgium
| | - Edit Szepessy
- Diabetes Research Center, Brussels Free University-Vrije Universiteit Brussel, Brussels, Belgium
| | - Krista Suenens
- Diabetes Research Center, Brussels Free University-Vrije Universiteit Brussel, Brussels, Belgium
| | - Geert Stangé
- Diabetes Research Center, Brussels Free University-Vrije Universiteit Brussel, Brussels, Belgium
| | | | | | - Zhidong Ling
- Diabetes Research Center, Brussels Free University-Vrije Universiteit Brussel, Brussels, Belgium
| | | | - Daniel Pipeleers
- Diabetes Research Center, Brussels Free University-Vrije Universiteit Brussel, Brussels, Belgium;
| | | |
Collapse
|
44
|
Sankaranarayanan S, Jetty N, Gadagi JS, Preethy S, Abraham SJK. Periodontal regeneration by autologous bone marrow mononuclear cells embedded in a novel thermo reversible gelation polymer. J Stem Cells 2013; 8:99-103. [PMID: 24698986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Regeneration of bony defects caused by periodontal disease continues to be a challenge for clinicians. Application of stem cells from different tissue sources and scaffolds for regeneration have been reported in animal models but clinical studies with long term follow-ups are limited. Herein we report the three years follow-up of the application of autologous bone marrow mononuclear cells (BMMNCs) embedded in a thermo-reversible gelation polymer (TGP) for periodontal regeneration. A 23-year female patient with advanced periodontitis (class IV gingival recession, probing pocket depth (PPD) of 5 mm and 6 mm in relation to mandibular lateral and central incisors respectively, and clinical attachment level (CAL) of 13 mm) correlated with radiographic evidence of severe horizontal bone loss extending up to the apex of mandibular incisors was selected for the treatment. After debridement, the defect was implanted with BMMNCs impregnated in TGP. Then the clinical parameters and radiographic evaluation were made at periodic intervals of 6, 12, 24 and 36 months. At six months, significant improvement with the clinical parameters (PPD had reduced to 2 mm, clinical attachment level had improved by 6 mm) was observed. At 36 months, the radiograph revealed bone regeneration with improvement in vertical and horizontal bone height. Transplantation of BMMNCs in a novel TGP is safe and results in a relatively significant and stable clinical outcome in horizontal alveolar bony defects.
Collapse
Affiliation(s)
- Seshadri Sankaranarayanan
- Department of Oral Pathology, Sree Moogambigai Dental College, Kulesekaram, Kanyakumari, Tamilnadu, India
| | - Nadeem Jetty
- Mother Cell Regenerative Center, Trichy, Tamilnadu, India
| | - Jayaprakash S Gadagi
- Department of Oral Pathology, Thai Moogambigai Dental College, Maduravayal, Chennai, Tamilnadu, India
| | - Senthilkumar Preethy
- Department of Periodontics, Vishnu Dental College, Kovvada, Vshnupuram, Bhimavaram, West Godavari, Andhra Pradesh, India
| | - Samuel J K Abraham
- Fujio-Eiji Academic Terrain (FEAT), Nichi-In Centre for Regenerative Medicine (NCRM), Chennai, Tamilnadu, India
| |
Collapse
|
45
|
Turner WS, Wang X, Johnson S, Medberry C, Mendez J, Badylak SF, McCord MG, McCloskey KE. Cardiac tissue development for delivery of embryonic stem cell-derived endothelial and cardiac cells in natural matrices. J Biomed Mater Res B Appl Biomater 2012; 100:2060-72. [PMID: 22888031 DOI: 10.1002/jbm.b.32770] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 04/06/2012] [Accepted: 05/28/2012] [Indexed: 01/02/2023]
Abstract
The packaging and delivery of cells for cardiac regeneration has been explored using a variety biomaterials and delivery methods, but these studies often ignore one or more important design factors critical for rebuilding cardiac tissue. These include the biomaterial architecture, strength and stiffness, cell alignment, and/or incorporation of multiple cell types. In this article, we explore the combinatorial use of decellularized tissues, moldable hydrogels, patterned cell-seeding, and cell-sheet engineering and find that a combination of these methods is optimal in the recreation of transplantable cardiac-like tissue in vivo. We show that decellularized urinary bladder matrix (UBM), that is compliant and suturable, supports the survival of cell cultures but does not allow maintenance of cell-to-cell contacts of transferred cell-sheets (presumably, due to its rough surface). Moreover, the UBM material must be filled with hyaluronan (HA) hydrogels for smoothing rough surfaces and allowing the delivery of greater cell numbers. We additionally incorporated our previously developed "wrinkled" microchip for inducing alignment of cardiac cells with a laser-etched mask for co-seeding patterned "channels" of cells. This article also introduces a novel method of plasma coating for cell-sheet engineering that compares well with electron bean irradiation methods and may be combined with our "wrinkled" surfaces to facilitate the alignment of cardiac cells into sheets. Our data shows that an optimal design for generating cardiac tissue would include (1) decellularized matrix seeded with endothelial cells in a HA layered with (2) prealigned cardiac cell-sheets fabricated using our "wrinkled" microchips and thermo-responsive polymer [poly(N-isopropylacrylamide)] cell sheet transfer system.
Collapse
Affiliation(s)
- William S Turner
- School of Engineering, University of California, Merced, Merced, California, USA
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Uemura T, Takamatsu K, Ikeda M, Okada M, Kazuki K, Ikada Y, Nakamura H. Transplantation of induced pluripotent stem cell-derived neurospheres for peripheral nerve repair. Biochem Biophys Res Commun 2012; 419:130-5. [PMID: 22333572 DOI: 10.1016/j.bbrc.2012.01.154] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2012] [Accepted: 01/31/2012] [Indexed: 12/17/2022]
Abstract
In spite of the extensive research using induced pluripotent stem (iPS) cells, the therapeutic potential of iPS cells in the treatment of peripheral nerve injury is largely unknown. In this study, we repaired peripheral nerve gaps in mice using tissue-engineered bioabsorbable nerve conduits coated with iPS cell-derived neurospheres. The secondary neurospheres derived from mouse iPS cells were suspended in each conduit (4000,000 cells per conduit) and cultured in the conduit in three-dimensional (3D) culture for 14 days. We then implanted them in the mouse sciatic nerve gaps (5 mm) (iPS group; n=10). The nerve conduit alone was implanted in the control group (n=10). After 4, 8 and 12 weeks, motor and sensory functional recovery in mice were significantly better in the iPS group. At 12 weeks, all the nerve conduits remained structurally stable without any collapse and histological analysis indicated axonal regeneration in the nerve conduits of both groups. However, the iPS group showed significantly more vigorous axonal regeneration. The bioabsorbable nerve conduits created by 3D-culture of iPS cell-derived neurospheres promoted regeneration of peripheral nerves and functional recovery in vivo. The combination of iPS cell technology and bioabsorbable nerve conduits shows potential as a future tool for the treatment of peripheral nerve defects.
Collapse
Affiliation(s)
- Takuya Uemura
- Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.
| | | | | | | | | | | | | |
Collapse
|
47
|
Lovati AB, Vianello E, Talò G, Recordati C, Bonizzi L, Galliera E, Broggini M, Moretti M. Biodegradable microcarriers as cell delivery vehicle for in vivo transplantation and magnetic resonance monitoring. J BIOL REG HOMEOS AG 2011; 25:S63-S74. [PMID: 22051172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Microcarrier culture systems offer an attractive method for cell amplification and as delivery vehicle. At the same time, super paramagnetic iron oxide (SPIO) nanoparticles represent a unique in vivo tracking system, already approved for clinical use. In our study, we tested the combination of clinically approved microcarriers and SPIO nanoparticles for cell-construct delivery and subsequent tracking after implantation. In order to mimic better a clinical setting, biodegradable macroporous microcarriers were employed as an alternative approach to expand human primary chondrocytes in a dynamic culture system for subsequent direct transplantation. In addition, cellseeded microcarriers were labeled with SPIO nanoparticles to evaluate the benefits of cell-constructs tracking with magnetic resonance. In vivo subcutaneous implants were monitored for up to 3 weeks and orthotopic implantation was simulated and monitored in ex vivo osteochondral defects.
Collapse
Affiliation(s)
- A B Lovati
- IRCCS Istituto Ortopedico Galeazzi, Cell and Tissue Engineering Laboratory, Milan, Italy
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Moroz BB, Onizhshenko NA, Lebedev VG, Deshevoĭ IB, Sidorovich GI, Lyrshchikova AV, Rasulov MF, Krasheninnikov ME, Sevast'ianov VI. [The influence of multipotent mesenchymal stromal cells of bone marrow on process of local radiation injury in rats after local beta-irradiation]. Radiats Biol Radioecol 2009; 49:688-693. [PMID: 20143581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The influence of multipotent mesenchymal stromal cells (MMSC), got from allogenic bone marrow, on local radiation injury in rats after beta-irradiation by a source 90Sr/90Y in a dose 140 Gy under various conditions and ways transplantation was studied. It was established, that transplantation MMSC, allocated on biodegradative membranes, which have been carried out for 21 day after an irradiation in conditions minor surgical of ulcers, resulted in reduction of the area of local beam defeats and acceleration of healing of skin, in comparison with the control of an irradiation. The introduction of suspension MMSC subcutaneous around of the center of a defeat at 8 day after an irradiation caused earlier healing of ulcers. It was concluded, that application of MMSC is perspective for treatment of local radiation injury and necessity of development of optimum conditions of their use at cell therapy of radiation injury of skin.
Collapse
|
49
|
Emerich DF, Thanos CG. NT-501: an ophthalmic implant of polymer-encapsulated ciliary neurotrophic factor-producing cells. Curr Opin Mol Ther 2008; 10:506-515. [PMID: 18830926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Neurotech Pharmaceuticals Inc is developing NT-501, an implantable polymeric device containing a genetically modified cell line that secretes ciliary neurotrophic factor, for the potential treatment of retinitis pigmentosa (RP) and age-related macular degeneration (AMD). Phase III clinical trials for RP and a phase II clinical trial for dry AMD are ongoing. A phase I clinical trial showed that NT-501 treatment was well tolerated with variable, but positive improvements in visual acuity.
Collapse
|
50
|
Hou T, Xu J, Li Q, Feng J, Zen L. In vitro evaluation of a fibrin gel antibiotic delivery system containing mesenchymal stem cells and vancomycin alginate beads for treating bone infections and facilitating bone formation. Tissue Eng Part A 2008; 14:1173-82. [PMID: 18593356 DOI: 10.1089/ten.tea.2007.0159] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Bone infection and defects are two major problems that occur in the course of treating posttraumatic open bone fractures and osteomyelitis for which local antibiotic delivery is efficacious. Further, hemostasis is an essential treatment after removal of infected bones. Herein we report a new antibiotics delivery system made of vancomycin alginate beads embedded in a fibrin gel (Vanco-AB-FG) to treat bone infections, with the addition of bone marrow-derived mesenchymal stem cells (BMMSCs) seeded in the fibrin gel to promote bone formation. The proliferation of BMMSCs was measured under different conditions of three-dimensional (3D) gel or monolayer, with or without Vanco-AB; cells were labeled by enhanced green fluorescence protein, and their morphology and distribution were observed. The alkaline phosphatase (ALP) activity, real-time RT-PCR, and von Kossa staining were used for determining the osteogenic differentiation of BMMSCs. The concentrations of vancomycin resulting from the antibiotic delivery were determined; the antibiotic activity was evaluated by an assay with standard Staphylococcus aureus (ATCC 25923) as a biological target. The results showed that for Vanco-AB-FG, vancomycin concentrations remained above the breakpoint sensitivity for 22 days. The 3D culture within the gel and the addition of Vanco-AB affected the cell behavior. The morphology of BMMSCs within the 3D gel was different from that in monolayer. The proliferation of the cells within the 3D gel was lower than that in monolayer in early stage, but in later stage the number of BMMSCs in Vanco-AB-FG was similar to that in monolayer. The ALP activity was higher in the 3D gel, and the addition of Vanco-AB slightly increased ALP activity. The osteogenic gene expression levels of ALP, osteopontin, and alpha1 chain of collagen I were higher in the 3D gel than those in monolayer, and additional Vanco-AB could also increase their expression. The von Kossa staining showed that the deposition of mineralization was observed in both the 3D gel and monolayer cultures, but the mineralization nodule size in monolayer was bigger and the number of them in 3D gel was greater. In conclusion, this system could be an alternative treatment for bone infections and defects.
Collapse
Affiliation(s)
- Tianyong Hou
- Department of Orthopaedics, Southwest Hospital, Chongqing, China
| | | | | | | | | |
Collapse
|