1
|
Patel V, Parekh P, Khimani M, Yusa SI, Bahadur P. Pluronics® based Penta Block Copolymer micelles as a precursor of smart aggregates for various applications: A review. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
2
|
Madonna R. Angiocrine endothelium: From physiology to atherosclerosis and cardiac repair. Vascul Pharmacol 2022; 144:106993. [DOI: 10.1016/j.vph.2022.106993] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/25/2022] [Accepted: 03/30/2022] [Indexed: 02/08/2023]
|
3
|
Rmaidi A, Zelzer M, Sindji L, Dima R, Boury F, Delorme N, Montero-Menei CN. Impact of the physico-chemical properties of polymeric microspheres functionalized with cell adhesion molecules on the behavior of mesenchymal stromal cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111852. [DOI: 10.1016/j.msec.2020.111852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/17/2020] [Accepted: 12/28/2020] [Indexed: 12/12/2022]
|
4
|
Kandalam S, De Berdt P, Ucakar B, Vanvarenberg K, Bouzin C, Gratpain V, Diogenes A, Montero-Menei CN, des Rieux A. Human dental stem cells of the apical papilla associated to BDNF-loaded pharmacologically active microcarriers (PAMs) enhance locomotor function after spinal cord injury. Int J Pharm 2020; 587:119685. [PMID: 32712253 DOI: 10.1016/j.ijpharm.2020.119685] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/14/2020] [Accepted: 07/20/2020] [Indexed: 02/08/2023]
Abstract
There is no treatment for spinal cord injury (SCI) that fully repairs the damages. One strategy is to inject mesenchymal stem cells around the lesion to benefit from their immunomodulatory properties and neuroprotective effect. Our hypothesis was that the combination of dental stem cells from the apical papilla (SCAP) with pharmacologically active microcarriers (PAMs) releasing brain-derived neurotrophic factor (BDNF) would improve rat locomotor function by immunomodulation and neuroprotection. BDNF-PAMs were prepared by solid/oil/water emulsion of poly(L-lactide-co-glycolide) and nanoprecipitated BDNF and subsequent coating with fibronectin. SCAP were then seeded on BDNF-PAMs. SCAP expression of neuronal and immunomodulatory factors was evaluated in vitro. SCAP BDNF-PAMs were injected in a rat spinal cord contusion model and their locomotor function was evaluated by Basso, Beattie, and Bresnahan (BBB) scoring. Impact on inflammation and neuroprotection/axonal growth was evaluated by immunofluorescence. Culture on PAMs induced the overexpression of immunomodulatory molecules and neural/neuronal markers. Injection of SCAP BDNF-PAMs at the lesion site improved rat BBB scoring, reduced the expression of inducible nitric oxide synthase and increased the expression of βIII tubulin, GAP43, and 5-HT. These results confirm the suitability and versatility of PAMs as combined drug and cell delivery system for regenerative medicine applications but also that BDNF-PAMs potentialize the very promising therapeutic potential of SCAP in the scope of SCI.
Collapse
Affiliation(s)
- Saikrishna Kandalam
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium; CRCINA, INSERM, Université de Nantes, Université d'Angers, Angers F-49933, France
| | - Pauline De Berdt
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium
| | - Bernard Ucakar
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium
| | - Kevin Vanvarenberg
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium
| | - Caroline Bouzin
- IREC Imaging platform (2IP), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, UCLouvain, IREC, 1200 Brussels, Belgium
| | - Viridiane Gratpain
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium
| | - Anibal Diogenes
- Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | | | - Anne des Rieux
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Bruxelles, Belgium.
| |
Collapse
|
5
|
Relating polymeric microparticle formulation to prevalence or distribution of fibronectin and poly-d-lysine to support mesenchymal stem cell growth. Biointerphases 2020; 15:041008. [DOI: 10.1116/6.0000226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
6
|
Contessi Negrini N, Lipreri MV, Tanzi MC, Farè S. In vitro cell delivery by gelatin microspheres prepared in water-in-oil emulsion. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:26. [PMID: 32060637 DOI: 10.1007/s10856-020-6363-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 01/27/2020] [Indexed: 06/10/2023]
Abstract
The regeneration of injured or damaged tissues by cell delivery approaches requires the fabrication of cell carriers (e.g., microspheres, MS) that allow for cell delivery to limit cells spreading from the injection site. Ideal MS for cell delivery should allow for cells adhesion and proliferation on the MS before the injection, while they should allow for viable cells release after the injection to promote the damaged tissue regeneration. We optimized a water-in-oil emulsion method to obtain gelatin MS crosslinked by methylenebisacrylamide (MBA). The method we propose allowed obtaining spherical, chemically crosslinked MS characterized by a percentage crosslinking degree of 74.5 ± 2.1%. The chemically crosslinked gelatin MS are characterized by a diameter of 70.9 ± 17.2 μm in the dry state and, at swelling plateau in culture medium at 37 °C, by a diameter of 169.3 ± 41.3 μm. The MS show dimensional stability up to 28 days, after which they undergo complete degradation. Moreover, during their degradation, MS release gelatin that can improve the engraftment of cells in the injured site. The produced MS did not induce any cytotoxic effect in vitro and they supported viable L929 fibroblasts adhesion and proliferation. The MS released viable cells able to colonize and proliferate on the tissue culture plastic, used as release substrate, potentially proving their ability in supporting a simplified in vitro wound healing process, thus representing an optimal tool for cell delivery applications.
Collapse
Affiliation(s)
- Nicola Contessi Negrini
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy.
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy.
| | - Maria Veronica Lipreri
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
| | - Maria Cristina Tanzi
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
| | - Silvia Farè
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
- INSTM, National Interuniversity Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
| |
Collapse
|
7
|
Sydorak I, Dang M, Baxter SJ, Halcomb M, Ma P, Kapila S, Hatch N. Microsphere controlled drug delivery for local control of tooth movement. Eur J Orthod 2019; 41:1-8. [PMID: 29608684 PMCID: PMC6343727 DOI: 10.1093/ejo/cjy017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Background Because orthodontic tooth movement is dependent upon osteoclast-mediated resorption of alveolar bone adjacent to the pressure side of tooth roots, biologic mediators that regulate osteoclasts can be utilized to control tooth movement. Objectives To develop a novel method to locally enhance orthodontic anchorage. Methods We encapsulated osteoprotegerin (OPG) in polymer microspheres and tested the effectiveness of microsphere encapsulated versus non-encapsulated OPG for enhancing orthodontic anchorage in a rodent model of tooth movement. A single injection of 1 mg/kg non-encapsulated or microsphere encapsulated OPG was delivered into the palatal mucosa mesial to the first maxillary molar 1 day prior to tooth movement. A positive control group received injections of 5 mg/kg non-encapsulated OPG every 3 days during tooth movement. After 28 days of tooth movement, hemi-maxillae and femurs were dissected. Molar mesial and incisor distal tooth movement was measured using stone casts that were scanned and magnified. Local alveolar, distant femur bone, and tooth root volumes were analyzed by micro computed tomography. Serum OPG levels were measured by ELISA. Osteoclast numbers were quantified by histomorphometry. Results The single injection of microsphere encapsulated OPG significantly enhanced orthodontic anchorage, while the single injection of non-encapsulated OPG did not. Injection of encapsulated OPG inhibited molar mesial movement but did not inhibit incisor tooth movement, and did not alter alveolar or femur bone volume fraction, density, or mineral content. Multiple injections of 5 mg/kg non-encapsulated OPG enhanced orthodontic anchorage, but also inhibited incisor retraction and altered alveolar and femur bone quality parameters. Increased OPG levels were found only in animals receiving multiple injections of non-encapsulated 5 mg/kg OPG. Osteoclast numbers were higher upon tooth movement in animals that did not receive OPG. Osteoclast numbers in OPG injected animals were variable within groups. Conclusions Microsphere encapsulation of OPG allows for controlled drug release, and enhances site-specific orthodontic anchorage without systemic side effects. With additional refinements, this drug delivery system could be applicable to a broad array of potential biologic orthodontic therapeutics.
Collapse
Affiliation(s)
- Inna Sydorak
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, USA
| | - Ming Dang
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, USA.,Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, USA
| | - Sarah J Baxter
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, USA
| | - Michael Halcomb
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, USA
| | - Peter Ma
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, USA.,Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, USA.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, USA.,Department of Materials Science and Engineering, University of Michigan, Ann Arbor, USA
| | - Sunil Kapila
- Division of Orthodontics, University of California San Francisco, USA
| | - Nan Hatch
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, USA
| |
Collapse
|
8
|
Abstract
Stem cell therapy is a promising approach to the treatment of ischemic heart disease via replenishing cell loss after myocardial infarction. Both preclinical studies and clinical trials have indicated that cardiac function improved consistently, but very modestly after cell-based therapy. This mainly attributed to low cell survival rate, engraftment and functional integration, which became the major challenges to regenerative medicine. In recent years, several new cell types have been developed to regenerate cardiomyocytes and novel delivery approaches helped to increase local cell retention. New strategies, such as cell pretreatment, gene-based therapy, tissue engineering, extracellular vesicles application and immunologic regulation, have surged and brought about improved cell survival and functional integration leading to better therapeutic effects after cell transplantation. In this review, we summarize these new strategies targeting at challenges of cardiac regenerative medicine and discuss recent evidences that may hint their effectiveness in the future clinical settings.
Collapse
|
9
|
Combining NT3-overexpressing MSCs and PLGA microcarriers for brain tissue engineering: A potential tool for treatment of Parkinson's disease. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:934-943. [PMID: 28482609 DOI: 10.1016/j.msec.2017.02.178] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 01/03/2017] [Accepted: 02/28/2017] [Indexed: 12/18/2022]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder that characterized by destruction of substantia nigrostriatal pathway due to the loss of dopaminergic (DA) neurons. Regardless of substantial efforts for treatment of PD in recent years, an effective therapeutic strategy is still missing. In a multidisciplinary approach, bone marrow derived mesenchymal stem cells (BMSCs) are genetically engineered to overexpress neurotrophin-3 (nt-3 gene) that protect central nervous system tissues and stimulates neuronal-like differentiation of BMSCs. Poly(lactic-co-glycolic acid) (PLGA) microcarriers are designed as an injectable scaffold and synthesized via double emulsion method. The surface of PLGA microcarriers are functionalized by collagen as a bioadhesive agent for improved cell attachment. The results demonstrate effective overexpression of NT-3. The expression of tyrosine hydroxylase (TH) in transfected BMSCs reveal that NT-3 promotes the intracellular signaling pathway of DA neuron differentiation. It is also shown that transfected BMSCs are successfully attached to the surface of microcarriers. The presence of dopamine in peripheral media of cell/microcarrier complex reveals that BMSCs are successfully differentiated into dopaminergic neuron. Our approach that sustains presence of growth factor can be suggested as a novel complementary therapeutic strategy for treatment of Parkinson disease.
Collapse
|
10
|
Pharmacologically active microcarriers delivering BDNF within a hydrogel: Novel strategy for human bone marrow-derived stem cells neural/neuronal differentiation guidance and therapeutic secretome enhancement. Acta Biomater 2017; 49:167-180. [PMID: 27865962 DOI: 10.1016/j.actbio.2016.11.030] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 10/18/2016] [Accepted: 11/11/2016] [Indexed: 12/29/2022]
Abstract
Stem cells combined with biodegradable injectable scaffolds releasing growth factors hold great promises in regenerative medicine, particularly in the treatment of neurological disorders. We here integrated human marrow-isolated adult multilineage-inducible (MIAMI) stem cells and pharmacologically active microcarriers (PAMs) into an injectable non-toxic silanized-hydroxypropyl methylcellulose (Si-HPMC) hydrogel. The goal is to obtain an injectable non-toxic cell and growth factor delivery device. It should direct the survival and/or neuronal differentiation of the grafted cells, to safely transplant them in the central nervous system, and enhance their tissue repair properties. A model protein was used to optimize the nanoprecipitation conditions of the neuroprotective brain-derived neurotrophic factor (BDNF). BDNF nanoprecipitate was encapsulated in fibronectin-coated (FN) PAMs and the in vitro release profile evaluated. It showed a prolonged, bi-phasic, release of bioactive BDNF, without burst effect. We demonstrated that PAMs and the Si-HPMC hydrogel increased the expression of neural/neuronal differentiation markers of MIAMI cells after 1week. Moreover, the 3D environment (PAMs or hydrogel) increased MIAMI cells secretion of growth factors (b-NGF, SCF, HGF, LIF, PlGF-1, SDF-1α, VEGF-A & D) and chemokines (MIP-1α & β, RANTES, IL-8). These results show that PAMs delivering BDNF combined with Si-HPMC hydrogel represent a useful novel local delivery tool in the context of neurological disorders. It not only provides neuroprotective BDNF but also bone marrow-derived stem cells that benefit from that environment by displaying neural commitment and an improved neuroprotective/reparative secretome. It provides preliminary evidence of a promising pro-angiogenic, neuroprotective and axonal growth-promoting device for the nervous system. STATEMENT OF SIGNIFICANCE Combinatorial tissue engineering strategies for the central nervous system are scarce. We developed and characterized a novel injectable non-toxic stem cell and protein delivery system providing regenerative cues for central nervous system disorders. BDNF, a neurotrophic factor with a wide-range effect, was nanoprecipitated to maintain its structure and released in a sustained manner from novel polymeric microcarriers. The combinatorial 3D support, provided by fibronectin-microcarriers and the hydrogel, to the mesenchymal stem cells guided the cells towards a neuronal differentiation and enhanced their tissue repair properties by promoting growth factors and cytokine secretion. The long-term release of physiological doses of bioactive BDNF, combined to the enhanced secretion of tissue repair factors from the stem cells, constitute a promising therapeutic approach.
Collapse
|
11
|
Chan HH, Wathen CA, Ni M, Zhuo S. Stem cell therapies for ischemic stroke: current animal models, clinical trials and biomaterials. RSC Adv 2017. [DOI: 10.1039/c7ra00336f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
We report the facilitation of stem cell therapy in stroke by tissue engineering and applications of biomaterials.
Collapse
Affiliation(s)
- Hugh H. Chan
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education & Fujian Provincial Key Laboratory of Photonics Technology
- Fujian Normal University
- Fuzhou 350007
- P. R. China
- Department of Neuroscience
| | | | - Ming Ni
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education & Fujian Provincial Key Laboratory of Photonics Technology
- Fujian Normal University
- Fuzhou 350007
- P. R. China
| | - Shuangmu Zhuo
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education & Fujian Provincial Key Laboratory of Photonics Technology
- Fujian Normal University
- Fuzhou 350007
- P. R. China
| |
Collapse
|
12
|
Zhang Z, Eyster TW, Ma PX. Nanostructured injectable cell microcarriers for tissue regeneration. Nanomedicine (Lond) 2016; 11:1611-28. [PMID: 27230960 PMCID: PMC5619097 DOI: 10.2217/nnm-2016-0083] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 05/05/2016] [Indexed: 11/21/2022] Open
Abstract
Biodegradable polymer microspheres have emerged as cell carriers for the regeneration and repair of irregularly shaped tissue defects due to their injectability, controllable biodegradability and capacity for drug incorporation and release. Notably, recent advances in nanotechnology allowed the manipulation of the physical and chemical properties of the microspheres at the nanoscale, creating nanostructured microspheres mimicking the composition and/or structure of natural extracellular matrix. These nanostructured microspheres, including nanocomposite microspheres and nanofibrous microspheres, have been employed as cell carriers for tissue regeneration. They enhance cell attachment and proliferation, promote positive cell-carrier interactions and facilitate stem cell differentiation for target tissue regeneration. This review highlights the recent advances in nanostructured microspheres that are employed as injectable, biomimetic and cell-instructive cell carriers.
Collapse
Affiliation(s)
- Zhanpeng Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-1078, USA
| | - Thomas W Eyster
- Department of Biologic & Materials Sciences, University of Michigan, Ann Arbor, MI 48109-1078, USA
| | - Peter X Ma
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-1078, USA
- Department of Biologic & Materials Sciences, University of Michigan, Ann Arbor, MI 48109-1078, USA
- Macromolecular Science & Engineering Center, University of Michigan, Ann Arbor, MI 48109-1078, USA
- Materials Science & Engineering, University of Michigan, Ann Arbor, MI 48109-1078, USA
| |
Collapse
|
13
|
André EM, Passirani C, Seijo B, Sanchez A, Montero-Menei CN. Nano and microcarriers to improve stem cell behaviour for neuroregenerative medicine strategies: Application to Huntington's disease. Biomaterials 2016; 83:347-62. [DOI: 10.1016/j.biomaterials.2015.12.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 12/09/2015] [Accepted: 12/13/2015] [Indexed: 12/22/2022]
|
14
|
Morille M, Toupet K, Montero-Menei CN, Jorgensen C, Noël D. PLGA-based microcarriers induce mesenchymal stem cell chondrogenesis and stimulate cartilage repair in osteoarthritis. Biomaterials 2016; 88:60-9. [PMID: 26945456 DOI: 10.1016/j.biomaterials.2016.02.022] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 02/08/2016] [Accepted: 02/16/2016] [Indexed: 12/24/2022]
Abstract
In the present study, we aimed at evaluating the ability of novel PLGA-P188-PLGA-based microspheres to induce the differentiation of mesenchymal stem/stromal cells (MSC) into chondrocytes. To this aim, we tested microspheres releasing TGFβ3 (PAM-T) in vitro and in situ, in a pathological osteoarthritic (OA) environment. We first evaluated the chondrogenic differentiation of human MSCs seeded onto PAM-T in vitro and confirmed the up-regulation of chondrogenic markers while the secretome of the cells was not changed by the 3D environment. We then injected human MSC seeded onto PAM-T in the knee joints of mice with collagenase-induced OA. After 6 weeks, histological analysis revealed that formation of a cartilage-like tissue occurred at the vicinity of PAM-T that was not observed when MSCs were seeded onto PAM. We also noticed that the endogenous articular cartilage was less degraded. The extent of cartilage protection was further analysed by confocal laser microscopy. When MSCs seeded onto PAM-T were injected early after OA induction, protection of cartilage against degradation was evidenced and this effect was associated to a higher survival of MSCs in presence of TGFβ3. This study points to the interest of using MSCs seeded onto PAM for cartilage repair and stimulation of endogenous cartilage regeneration.
Collapse
Affiliation(s)
- Marie Morille
- Inserm, U1183, Hôpital Saint-Eloi, Montpellier, F-34295, France; Université MONTPELLIER, UFR de Médecine, Montpellier, F-34000, France
| | - Karine Toupet
- Inserm, U1183, Hôpital Saint-Eloi, Montpellier, F-34295, France; Université MONTPELLIER, UFR de Médecine, Montpellier, F-34000, France
| | | | - Christian Jorgensen
- Inserm, U1183, Hôpital Saint-Eloi, Montpellier, F-34295, France; Université MONTPELLIER, UFR de Médecine, Montpellier, F-34000, France; Service d'immuno-Rhumatologie, Hôpital Lapeyronie, Montpellier, F-34295, France
| | - Danièle Noël
- Inserm, U1183, Hôpital Saint-Eloi, Montpellier, F-34295, France; Université MONTPELLIER, UFR de Médecine, Montpellier, F-34000, France; Service d'immuno-Rhumatologie, Hôpital Lapeyronie, Montpellier, F-34295, France.
| |
Collapse
|
15
|
Fabien V, Minh-Quan L, Michelle S, Guillaume B, Van-Thanh T, Marie-Claire VJ. Development of prilling process for biodegradable microspheres through experimental designs. Int J Pharm 2016; 498:96-109. [PMID: 26656302 DOI: 10.1016/j.ijpharm.2015.11.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 11/27/2015] [Accepted: 11/28/2015] [Indexed: 01/29/2023]
Abstract
The prilling process proposes a microparticle formulation easily transferable to the pharmaceutical production, leading to monodispersed and highly controllable microspheres. PLGA microspheres were used for carrying an encapsulated protein and adhered stem cells on its surface, proposing a tool for regeneration therapy against injured tissue. This work focused on the development of the production of PLGA microspheres by the prilling process without toxic solvent. The required production quality needed a complete optimization of the process. Seventeen parameters were studied through experimental designs and led to an acceptable production. The key parameters and mechanisms of formation were highlighted.
Collapse
Affiliation(s)
- Violet Fabien
- LUNAM Université, Micro et Nanomédecines Biomimétiques (MINT), F-49933 Angers, France; INSERM U1066, F-49933 Angers, France
| | - Le Minh-Quan
- LUNAM Université, Micro et Nanomédecines Biomimétiques (MINT), F-49933 Angers, France; INSERM U1066, F-49933 Angers, France
| | - Sergent Michelle
- Aix Marseille Université, LISA, EA 4672, 13013 Marseille, France
| | - Bastiat Guillaume
- LUNAM Université, Micro et Nanomédecines Biomimétiques (MINT), F-49933 Angers, France; INSERM U1066, F-49933 Angers, France
| | - Tran Van-Thanh
- LUNAM Université, Micro et Nanomédecines Biomimétiques (MINT), F-49933 Angers, France; INSERM U1066, F-49933 Angers, France
| | - Venier-Julienne Marie-Claire
- LUNAM Université, Micro et Nanomédecines Biomimétiques (MINT), F-49933 Angers, France; INSERM U1066, F-49933 Angers, France.
| |
Collapse
|
16
|
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] [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
|
17
|
Savi M, Bocchi L, Fiumana E, Karam JP, Frati C, Bonafé F, Cavalli S, Morselli PG, Guarnieri C, Caldarera CM, Muscari C, Montero-Menei CN, Stilli D, Quaini F, Musso E. Enhanced engraftment and repairing ability of human adipose-derived stem cells, conveyed by pharmacologically active microcarriers continuously releasing HGF and IGF-1, in healing myocardial infarction in rats. J Biomed Mater Res A 2015; 103:3012-25. [DOI: 10.1002/jbm.a.35442] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 02/09/2015] [Accepted: 02/19/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Monia Savi
- Department of Life Sciences; University of Parma; Parco Area delle Scienze 11/A 43124 Parma Italy
| | - Leonardo Bocchi
- Department of Life Sciences; University of Parma; Parco Area delle Scienze 11/A 43124 Parma Italy
| | - Emanuela Fiumana
- National Institute for Cardiovascular Research; Bologna Italy
- Department of Biomedical and Neuromotor Sciences; University of Bologna; Via Irnerio 48, 40126 Bologna Italy
| | - Jean-Pierre Karam
- Department of Biomedical and Neuromotor Sciences; University of Bologna; Via Irnerio 48, 40126 Bologna Italy
- UMR S-1066 F-49933; LUNAM University; Angers France
- INSERM U1066; MINT “Micro Et Nanomédecines Biomimétiques” F-49933; Angers France
| | - Caterina Frati
- Department of Clinical and Experimental Medicine; University of Parma; Via A. Gramsci 14 43126 Parma Italy
| | - Francesca Bonafé
- National Institute for Cardiovascular Research; Bologna Italy
- Department of Biomedical and Neuromotor Sciences; University of Bologna; Via Irnerio 48, 40126 Bologna Italy
| | - Stefano Cavalli
- Department of Clinical and Experimental Medicine; University of Parma; Via A. Gramsci 14 43126 Parma Italy
| | - Paolo G. Morselli
- Department of Specialist; Diagnostic and Experimental Medicine, University of Bologna; Bologna Italy
| | - Carlo Guarnieri
- National Institute for Cardiovascular Research; Bologna Italy
- Department of Biomedical and Neuromotor Sciences; University of Bologna; Via Irnerio 48, 40126 Bologna Italy
| | - Claudio M. Caldarera
- National Institute for Cardiovascular Research; Bologna Italy
- Department of Biomedical and Neuromotor Sciences; University of Bologna; Via Irnerio 48, 40126 Bologna Italy
| | - Claudio Muscari
- National Institute for Cardiovascular Research; Bologna Italy
- Department of Biomedical and Neuromotor Sciences; University of Bologna; Via Irnerio 48, 40126 Bologna Italy
| | - Claudia N. Montero-Menei
- UMR S-1066 F-49933; LUNAM University; Angers France
- INSERM U1066; MINT “Micro Et Nanomédecines Biomimétiques” F-49933; Angers France
| | - Donatella Stilli
- Department of Life Sciences; University of Parma; Parco Area delle Scienze 11/A 43124 Parma Italy
- National Institute for Cardiovascular Research; Bologna Italy
| | - Federico Quaini
- National Institute for Cardiovascular Research; Bologna Italy
- Department of Clinical and Experimental Medicine; University of Parma; Via A. Gramsci 14 43126 Parma Italy
| | - Ezio Musso
- Department of Life Sciences; University of Parma; Parco Area delle Scienze 11/A 43124 Parma Italy
- National Institute for Cardiovascular Research; Bologna Italy
| |
Collapse
|
18
|
García-González CA, Concheiro A, Alvarez-Lorenzo C. Processing of Materials for Regenerative Medicine Using Supercritical Fluid Technology. Bioconjug Chem 2015; 26:1159-71. [DOI: 10.1021/bc5005922] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Carlos A. García-González
- Departamento de Farmacia
y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, E-15782-Santiago
de Compostela, Spain
| | - Angel Concheiro
- Departamento de Farmacia
y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, E-15782-Santiago
de Compostela, Spain
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacia
y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, E-15782-Santiago
de Compostela, Spain
| |
Collapse
|
19
|
Della Porta G, Nguyen BNB, Campardelli R, Reverchon E, Fisher JP. Synergistic effect of sustained release of growth factors and dynamic culture on osteoblastic differentiation of mesenchymal stem cells. J Biomed Mater Res A 2014; 103:2161-71. [PMID: 25346530 DOI: 10.1002/jbm.a.35354] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 09/19/2014] [Accepted: 10/10/2014] [Indexed: 01/29/2023]
Abstract
Microparticles have been utilized as delivery vehicles of soluble factors to modify cellular behavior and therefore enhance tissue engineering regeneration. When incorporated into three-dimensional systems, microparticles can provide geometrical and temporal controlled release of bioactive agents, such as growth factors (GFs) to surrounding cells. This study investigates the effect of GFs release from biopolymer microparticles on osteoblastic differentiation of human mesenchymal stem cells (hMSCs) encapsulated in calcium (Ca)-alginate scaffolds while cultured in a tubular perfusion system bioreactor system. Empirical and deterministic models were used to demonstrate that poly(D,L-lactic-co-glycolic acid)-encapsulated GFs would result in a delayed release profile compared to GFs encapsulated into scaffolds directly. We hypothesized that the dual delivery of human bone-morphogenetic protein 2 (hBMP2) and human vascular endothelial growth factor to cells in dynamic culture would provide molecular and physical cues to promote differentiation. Results indicated that the exposures of hBMP2 and dynamic flow are sufficient in enhancing the osteoblastic differentiation pathway compared to no GF addition and static culture. The GF delivery system in a dynamic flow environment resulted in a synergistic effect on osteoblastic differentiation of hMSCs.
Collapse
Affiliation(s)
- Giovanna Della Porta
- Department of Industrial Engineering, University of Salerno, 84084, Fisciano (SA), Italy; Laboratory of Cellular and Molecular Engineering (DEI), University of Bologna, 47521, Cesena (FC), Italy
| | | | | | | | | |
Collapse
|
20
|
Karam JP, Muscari C, Sindji L, Bastiat G, Bonafè F, Venier-Julienne MC, Montero-Menei NC. Pharmacologically active microcarriers associated with thermosensitive hydrogel as a growth factor releasing biomimetic 3D scaffold for cardiac tissue-engineering. J Control Release 2014; 192:82-94. [DOI: 10.1016/j.jconrel.2014.06.052] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Revised: 06/24/2014] [Accepted: 06/25/2014] [Indexed: 11/28/2022]
|
21
|
Karam JP, Bonafè F, Sindji L, Muscari C, Montero-Menei CN. Adipose-derived stem cell adhesion on laminin-coated microcarriers improves commitment toward the cardiomyogenic lineage. J Biomed Mater Res A 2014; 103:1828-39. [PMID: 25098676 DOI: 10.1002/jbm.a.35304] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 04/14/2014] [Accepted: 07/31/2014] [Indexed: 12/27/2022]
Abstract
For tissue-engineering studies of the infarcted heart it is essential to identify a source of cells that may provide cardiomyocyte progenitors, which is easy to amplify, accessible in adults, and allowing autologous grafts. Preclinical studies have shown that human adipose-derived stem cells (ADSCs) can differentiate into cardiomyocyte-like cells and improve heart function in myocardial infarction. We have developed pharmacologically active microcarriers (PAMs) which are biodegradable and biocompatible polymeric microspheres conveying cells on their biomimetic surface, therefore providing an adequate three-dimensional (3D) microenvironment. Moreover, they can release a growth factor in a prolonged manner. In order to implement ADSCs and PAMs for cardiac tissue engineering we first defined the biomimetic surface by studying the influence of matrix molecules laminin (LM) and fibronectin (FN), in combination with growth factors present in the cardiogenic niche, to further enhance the in vitro cardiac differentiation of ADSCs. We demonstrated that LM increased the expression of cardiac markers (Nkx2.5, GATA4, MEF2C) by ADSCs after 2 weeks in vitro. Interestingly, our results suggest that the 3D support provided by PAMs with a LM biomimetic surface (LM-PAMs) further enhanced the expression of cardiac markers and induced the expression of a more mature contractile protein, cardiac troponin I, compared with the 2D differentiating conditions after only 1 week in culture. The enrichment of the growth-factor cocktail with TGF-β1 potentiated the cardiomyogenic differentiation. These results suggest that PAMs offering a LM biomimetic surface may be efficiently used for applications combining adult stem cells in tissue-engineering strategies of the ischemic heart.
Collapse
Affiliation(s)
- Jean-Pierre Karam
- LUNAM Université, UMR S-1066 F-49933, Angers, France; NSERM U1066, MINT "Micro et nanomédecines biomimétiques,", F-49933, Angers, France; INRC-National Institute for Cardiovascular Research, 40126, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126, Bologna, Italy
| | | | | | | | | |
Collapse
|
22
|
Díaz-Herráez P, Garbayo E, Simón-Yarza T, Formiga FR, Prosper F, Blanco-Prieto MJ. Adipose-derived stem cells combined with neuregulin-1 delivery systems for heart tissue engineering. Eur J Pharm Biopharm 2014; 85:143-50. [PMID: 23958325 DOI: 10.1016/j.ejpb.2013.03.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 03/21/2013] [Accepted: 03/22/2013] [Indexed: 12/16/2022]
Abstract
Myocardial infarction (MI) is the leading cause of death worldwide, and extensive research has therefore been performed to find a cure. Neuregulin-1 (NRG) is a growth factor involved in cardiac repair after MI. We previously described how biocompatible and biodegradable microparticles, which are able to release NRG in a sustained manner, represent a valuable approach to avoid problems related to the short half-life after systemic administration of proteins. The effectiveness of this strategy could be improved by combining NRG with several cytokines involved in cardiac regeneration. The present study investigates the potential feasibility of using NRG-releasing particle scaffold combined with adipose-derived stem cells (ADSC) as a multiple growth factor delivery-based tissue engineering strategy for implantation in the infarcted myocardium. NRG-releasing particle scaffolds with a suitable size for intramyocardial implantation were prepared by TROMS. Next, ADSC were adhered to particle scaffolds and their potential for heart administration was assessed in a MI rat model. NRG was successfully encapsulated reaching encapsulation efficiencies of 92.58 ± 3.84%. NRG maintained its biological activity after the microencapsulation process. ADSCs adhered efficiently to particle scaffolds within a few hours. The ADSC-cytokine delivery system developed proved to be compatible with intramyocardial administration in terms of injectability through a 23-gauge needle and tissue response. Interestingly, ADSC-scaffolds were present in the peri-infarted tissue 2 weeks after implantation. This proof of concept study provides important evidence required for future effectiveness studies and for the translation of this approach.
Collapse
Affiliation(s)
- P Díaz-Herráez
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, University of Navarra, Pamplona, Spain
| | | | | | | | | | | |
Collapse
|
23
|
Daviaud N, Garbayo E, Schiller PC, Perez-Pinzon M, Montero-Menei CN. Organotypic cultures as tools for optimizing central nervous system cell therapies. Exp Neurol 2013; 248:429-40. [DOI: 10.1016/j.expneurol.2013.07.012] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 07/15/2013] [Accepted: 07/18/2013] [Indexed: 01/01/2023]
|
24
|
Della Porta G, Falco N, Giordano E, Reverchon E. PLGA microspheres by Supercritical Emulsion Extraction: a study on insulin release in myoblast culture. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1831-47. [PMID: 23786568 DOI: 10.1080/09205063.2013.807457] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Supercritical Emulsion Extraction in a Continuous operation layout is proposed for the production of poly-lactic-co-glycolic acid (PLGA) microspheres loaded with insulin, selected as a model of bioactive signal. Microspheres with different mean sizes of 2 μm (±0.9 μm) and 3 μm (±2.2 μm) and insulin loadings of 3 and 6 mg/g were obtained by processing different water-oil-water emulsions; an encapsulation efficiency of about 60% w/w was measured in all cases. Insulin release profiles from PLGA microspheres were also characterized in two different media (Phosphate-Buffered Saline and Dulbecco's Modified Eagle Medium) and kinetic constants were estimated by using a model proposed in literature. The produced microspheres were, then, used for the cultivation of rat embryonic ventricular myoblasts in a serum-free medium to monitor the biological effect of the released insulin. The best cell viability and proliferation, supported by released insulin, was monitored when microspheres with mean size of 3 μm loaded with 3 mg/g of insulin were added.
Collapse
Affiliation(s)
- Giovanna Della Porta
- a Dipartimento di Ingegneria Industriale , Università di Salerno , via Ponte don Melillo 1 , 84084 , Fisciano , SA , Italy
| | | | | | | |
Collapse
|
25
|
Morille M, Van-Thanh T, Garric X, Cayon J, Coudane J, Noël D, Venier-Julienne MC, Montero-Menei CN. New PLGA-P188-PLGA matrix enhances TGF-β3 release from pharmacologically active microcarriers and promotes chondrogenesis of mesenchymal stem cells. J Control Release 2013; 170:99-110. [PMID: 23648834 DOI: 10.1016/j.jconrel.2013.04.017] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 04/25/2013] [Accepted: 04/27/2013] [Indexed: 01/01/2023]
Abstract
The use of injectable scaffolding materials for in vivo tissue regeneration has raised great interest in various clinical applications because it allows cell implantation through minimally invasive surgical procedures. In case of cartilage repair, a tissue engineered construct should provide a support for the cell and allow sustained in situ delivery of bioactive factors capable of inducing cell differentiation into chondrocytes. Pharmacologically active microcarriers (PAMs), made of biodegradable poly(d,l-lactide-co-glycolide acid) (PLGA), are a unique system, which combines these properties in an adaptable and simple microdevice. However, a limitation of such scaffold is low and incomplete protein release that occurs using the hydrophobic PLGA based microspheres. To circumvent this problem, we developed a novel formulation of polymeric PAMs containing a P188 poloxamer, which protects the protein from denaturation and may positively affect chondrogenesis. This poloxamer was added as a free additive for protein complexation and as a component of the scaffold covalently linked to PLGA. This procedure allows getting a more hydrophilic scaffold but also retaining the protective polymer inside the microcarriers during their degradation. The novel PLGA-P188-PLGA PAMs presenting a fibronectin-covered surface allowed enhanced MSC survival and proliferation. When engineered with TGFβ3, they allowed the sustained release of 70% of the incorporated TGF-β3 over time. Importantly, they exerted superior chondrogenic differentiation potential compared to previous FN-PAM-PLGA-TGF-β3, as shown by an increased expression of specific cartilage markers such as cartilage type II, aggrecan and COMP. Therefore, this microdevice represents an efficient easy-to-handle and injectable tool for cartilage repair.
Collapse
Affiliation(s)
- Marie Morille
- LUNAM Université, Micro et Nanomédecines Biomimétiques-MINT, F-49933 Angers, France
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Benoit JP. [Conception and studies of micro and nanomedicines for brain applications]. Biol Aujourdhui 2013; 206:263-71. [PMID: 23419253 DOI: 10.1051/jbio/2012026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Indexed: 11/14/2022]
Abstract
As far as micromedicines are concerned, we are interested in the microencapsulation of recombinant proteins, to generate microcarriers upon which living cells can be adsorbed, a highly challenging technology. The whole system forms a Pharmacologically Active Microcarrier (PAM) to be used in cell therapy in the context of neurodegenerative diseases. More precisely, the PAMs are used for tissue engineering, they will increase cell survival time as well as the differentiation and integration of grafted cells following transplants in animals, these micromedicines can also activate the regenerative potential of adult stem cells such as the MIAMI cells. Within the domain of nanomedicines, we are pursuing the development of lipid nanocapsules that act as biomimetic nanovectors resembling lipoproteins. We are studying systematically the biodistribution profiles of these nanomedicines depending on their route of administration, local or systemic. In particular, we are trying to define the essential physicochemical parameters of these nanovectors that, after administration, control the targeting of tumours. In the same way, we are trying to understand how these nanomedicines cross biological barriers and how they interact with cells. In terms of preclinical applications, we are focusing on glioblastomas. The route of administration can be systemic or local. The most promising results in terms of survival of tumour-bearing animals were obtained by infusing radioactive nanocapsules intratumourally, in order to achieve an in-situ radiotherapy approach.
Collapse
Affiliation(s)
- Jean-Pierre Benoit
- Laboratoire Micro et Nanomédecines biomimétiques, INSERM U 1066, IBS-CHU, 4 rue Larrey, 49933 Angers Cedex 9, France.
| |
Collapse
|
27
|
Karam JP, Muscari C, Montero-Menei CN. Combining adult stem cells and polymeric devices for tissue engineering in infarcted myocardium. Biomaterials 2012; 33:5683-95. [PMID: 22594970 DOI: 10.1016/j.biomaterials.2012.04.028] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Accepted: 04/08/2012] [Indexed: 12/18/2022]
Abstract
An increasing number of studies in cardiac cell therapy have provided encouraging results for cardiac repair. Adult stem cells may overcome ethical and availability concerns, with the additional advantages, in some cases, to allow autologous grafts to be performed. However, the major problems of cell survival, cell fate determination and engraftment after transplantation, still remain. Tissue-engineering strategies combining scaffolds and cells have been developed and have to be adapted for each type of application to enhance stem cell function. Scaffold properties required for cardiac cell therapy are here discussed. New tissue engineering advances that may be implemented in combination with adult stem cells for myocardial infarction therapy are also presented. Biomaterials not only provide a 3D support for the cells but may also mimic the structural architecture of the heart. Using hydrogels or particulate systems, the biophysical and biochemical microenvironments of transplanted cells can also be controlled. Advances in biomaterial engineering have permitted the development of sophisticated drug-releasing materials with a biomimetic 3D support that allow a better control of the microenvironment of transplanted cells.
Collapse
|
28
|
Musilli C, Karam JP, Paccosi S, Muscari C, Mugelli A, Montero-Menei CN, Parenti A. Pharmacologically active microcarriers for endothelial progenitor cell support and survival. Eur J Pharm Biopharm 2012; 81:609-16. [PMID: 22561954 DOI: 10.1016/j.ejpb.2012.04.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 04/13/2012] [Accepted: 04/18/2012] [Indexed: 12/29/2022]
Abstract
The regenerative potential of endothelial progenitor cell (EPC)-based therapies is limited due to poor cell viability and minimal retention following application. Neovascularization can be improved by means of scaffolds supporting EPCs. The aim of the present study was to investigate whether human early EPCs (eEPCs) could be efficiently cultured on pharmacologically active microcarriers (PAMs), made with poly(d,l-lactic-coglycolic acid) and coated with adhesion/extracellular matrix molecules. They may serve as a support for stem cells and may be used as cell carriers providing a controlled delivery of active protein such as the angiogenic factor, vascular endothelial growth factor-A (VEGF-A). eEPC adhesion to fibronectin-coated PAMs (FN-PAMs) was assessed by means of microscopic evaluation and by means of Alamar blue assay. Phospho ERK(1/2) and PARP-1 expression was measured by means of Western blot to assess the survival effects of FN-PAMs releasing VEGF-A (FN-VEGF-PAMs). The Alamar blue assay or a modified Boyden chamber assay was employed to assess proliferative or migratory capacity, respectively. Our data indicate that eEPCs were able to adhere to empty FN-PAMs within a few hours. FN-VEGF-PAMs increased the ability of eEPCs to adhere to them and strongly supported endothelial-like phenotype and cell survival. Moreover, the release of VEGF-A by FN-PAMs stimulated in vitro HUVEC migration and proliferation. These data strongly support the use of PAMs for supporting eEPC growth and survival and for stimulating resident mature human endothelial cells.
Collapse
Affiliation(s)
- Claudia Musilli
- Department of Preclinical and Clinical Pharmacology, University of Florence, Florence, Italy
| | | | | | | | | | | | | |
Collapse
|
29
|
HUANG YICHENG, HUANG YIYOU. TISSUE ENGINEERING FOR NERVE REPAIR. BIOMEDICAL ENGINEERING-APPLICATIONS BASIS COMMUNICATIONS 2012. [DOI: 10.4015/s101623720600018x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Nerve regeneration is a complex biological phenomenon. Once the nervous system is impaired, its recovery is difficult and malfunctions in other parts of the body may occur because mature neurons don't undergo cell division. To increase the prospects of axonal regeneration and functional recovery, researches have focused on designing “nerve guidance channels” or “nerve conduits”. For developing tissue engineered nerve conduits, four components come to mind, including a scaffold for axonal proliferation, supporting cells such as Schwann cells, growth factors, and extracelluar matrix. This article reviews the nervous system physiology, the factors that are critical for nerve repair, and the advanced technologies that are explored to fabricate nerve conduits. Furthermore, we also introduce a new method we developed to create longitudinally oriented channels within biodegradable polymers, Chitosan and PLGA, using a combined lyophilizing and wire-heating process. This innovative method using Ni-Cr wires as mandrels to create nerve guidance channels. The process is easy, straightforward, highly reproducible, and could easily be tailored to other polymer and solvent systems. These scaffolds could be useful for guided regeneration after transection injury in either the peripheral nerve or spinal cord.
Collapse
Affiliation(s)
- YI-CHENG HUANG
- Institute of Biomedical Engineering, College of Medicine and Engineering, National Taiwan University, Taipei, Taiwan
| | - YI-YOU HUANG
- Institute of Biomedical Engineering, College of Medicine and Engineering, National Taiwan University, Taipei, Taiwan
| |
Collapse
|
30
|
Forraz N, Wright KE, Jurga M, McGuckin CP. Experimental therapies for repair of the central nervous system: stem cells and tissue engineering. J Tissue Eng Regen Med 2012; 7:523-36. [DOI: 10.1002/term.552] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 09/02/2011] [Accepted: 11/15/2011] [Indexed: 12/21/2022]
Affiliation(s)
- N Forraz
- Therapy Research Institute (CTI-LYON); 5 avenue Lionel Terray; 69330; MEYZIEU-LYON; France
| | - KE Wright
- Therapy Research Institute (CTI-LYON); 5 avenue Lionel Terray; 69330; MEYZIEU-LYON; France
| | - M Jurga
- Therapy Research Institute (CTI-LYON); 5 avenue Lionel Terray; 69330; MEYZIEU-LYON; France
| | - CP McGuckin
- Therapy Research Institute (CTI-LYON); 5 avenue Lionel Terray; 69330; MEYZIEU-LYON; France
| |
Collapse
|
31
|
Tran VT, Karam JP, Garric X, Coudane J, Benoît JP, Montero-Menei CN, Venier-Julienne MC. Protein-loaded PLGA–PEG–PLGA microspheres: A tool for cell therapy. Eur J Pharm Sci 2012; 45:128-37. [DOI: 10.1016/j.ejps.2011.10.030] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 10/25/2011] [Accepted: 10/31/2011] [Indexed: 11/15/2022]
|
32
|
Garbayo E, Raval A, Curtis K, Della-Morte D, Gomez L, D'Ippolito G, Reiner T, Perez-Stable C, Howard G, Perez-Pinzon M, Montero-Menei C, Schiller P. Neuroprotective properties of marrow-isolated adult multilineage-inducible cells in rat hippocampus following global cerebral ischemia are enhanced when complexed to biomimetic microcarriers. J Neurochem 2011; 119:972-88. [PMID: 21496021 PMCID: PMC4516086 DOI: 10.1111/j.1471-4159.2011.07272.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cell-based therapies for global cerebral ischemia represent promising approaches for neuronal damage prevention and tissue repair promotion. We examined the potential of marrow-isolated adult multilineage-inducible (MIAMI) cells, a homogeneous subpopulation of immature human mesenchymal stromal cell, injected into the hippocampus to prevent neuronal damage induced by global ischemia using rat organotypic hippocampal slices exposed to oxygen-glucose deprivation and rats subjected to asphyxial cardiac arrest. We next examined the value of combining fibronectin-coated biomimetic microcarriers (FN-BMMs) with epidermal growth factor (EGF)/basic fibroblast growth factor (bFGF) pre-treated MIAMI compared to EGF/bFGF pre-treated MIAMI cells alone, for their in vitro and in vivo neuroprotective capacity. Naïve and EGF/bFGF pre-treated MIAMI cells significantly protected the Cornu Ammonis layer 1 (CA1) against ischemic death in hippocampal slices and increased CA1 survival in rats. MIAMI cells therapeutic value was significantly increased when delivering the cells complexed with FN-BMMs, probably by increasing stem cell survival and paracrine secretion of pro-survival and/or anti-inflammatory molecules as concluded from survival, differentiation and gene expression analysis. Four days after oxygen and glucose deprivation and asphyxial cardiac arrest, few transplanted cells administered alone survived in the brain whereas stem cell survival improved when injected complexed with FN-BMMs. Interestingly, a large fraction of the transplanted cells administered alone or in complexes expressed βIII-tubulin suggesting that partial neuronal transdifferentiation may be a contributing factor to the neuroprotective mechanism of MIAMI cells.
Collapse
Affiliation(s)
- E. Garbayo
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida (USA),Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Inserm U646, Angers F49100 (France),University of Angers, UMR-S646, Angers, F49100 (France)
| | - A.P. Raval
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida (USA)
| | - K.M. Curtis
- Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Department of Biochemistry & Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida (USA)
| | - D. Della-Morte
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida (USA),Department of Laboratory Medicine & Advanced Biotechnologies, IRCCS San Raffaele, Rome, Italy
| | - L.A. Gomez
- Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA)
| | - G. D'Ippolito
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida (USA),Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Department of Geriatrics, University of Miami Miller School of Medicine, Miami, Florida (USA),Department of Interdisciplinary Stem Cell, University of Miami Miller School of Medicine, Miami, Florida (USA),Department of Institutes and University of Miami Tissue Bank, University of Miami Miller School of Medicine, Miami, Florida (USA)
| | - T. Reiner
- Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA)
| | - C. Perez-Stable
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida (USA),Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA)
| | - G.A. Howard
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida (USA),Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Department of Biochemistry & Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida (USA)
| | - M.A. Perez-Pinzon
- Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida (USA)
| | - C.N. Montero-Menei
- Inserm U646, Angers F49100 (France),University of Angers, UMR-S646, Angers, F49100 (France)
| | - P.C. Schiller
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida (USA),Geriatric Research, Education and Clinical Center and Research Services, Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida (USA),Department of Biochemistry & Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida (USA),Department of Geriatrics, University of Miami Miller School of Medicine, Miami, Florida (USA),Department of Interdisciplinary Stem Cell, University of Miami Miller School of Medicine, Miami, Florida (USA)
| |
Collapse
|
33
|
Porta GD, Campardelli R, Falco N, Reverchon E. PLGA microdevices for retinoids sustained release produced by supercritical emulsion extraction: Continuous versus batch operation layouts. J Pharm Sci 2011; 100:4357-67. [DOI: 10.1002/jps.22647] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 05/02/2011] [Accepted: 05/11/2011] [Indexed: 11/11/2022]
|
34
|
Stem cells and growth factor delivery systems for cardiovascular disease. J Biotechnol 2011; 154:291-7. [PMID: 21663773 DOI: 10.1016/j.jbiotec.2011.05.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 05/23/2011] [Accepted: 05/24/2011] [Indexed: 11/22/2022]
Abstract
Coronary (CAD) and peripheral (PAD) artery diseases are major causes of morbidity and mortality, and millions of CAD and PAD patients are treated by various medications, bypass surgery or angioplasty around the world. Such patients might benefit from novel stem cells and tissue engineering strategies aimed at accelerating natural processes of postnatal collateral vessel formation and repairing damaged tissues. By combining three fundamental "tools", namely stem cells, biomaterials and growth factors (GFs), such strategies may enhance the efficacy of cell therapy in several ways: (a) by supplying exogenous stem cells or GFs that stimulate resident cardiac stem cell (CSC) migration, engraftment and commitment to cardiomyocytes, and that induce and modulate arterial response to ischemia; (b) by supporting the maintenance of GFs and transplanted stem cells in the damaged tissues through the use of biocompatible and biodegradable polymers for a period of time sufficient to allow histological and anatomical restoration of the damaged tissue. This review will discuss the potential of combining stem cells and new delivery systems for growth factors, such as vehicle-based delivery strategies or cell-based gene therapy, to facilitate regeneration of ischemic tissues. These approaches would promote the ability of resident CSCs or of exogenous multipotent stem cells such as adipose tissue-derived mesenchymal stem cells (AT-MSCs) to induce the healing of damaged tissue, by recruiting and directing these cells into the damage area and by improving angiogenesis and reperfusion of ischemic tissues.
Collapse
|
35
|
Wen Y, Yang ST. Microfibrous carriers for cell culture: A comparative study. Biotechnol Prog 2011; 27:1126-36. [DOI: 10.1002/btpr.625] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 03/16/2011] [Indexed: 11/06/2022]
|
36
|
Why and how to prepare biodegradable, monodispersed, polymeric microparticles in the field of pharmacy? Int J Pharm 2011; 407:1-11. [DOI: 10.1016/j.ijpharm.2011.01.027] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Revised: 01/01/2011] [Accepted: 01/12/2011] [Indexed: 11/21/2022]
|
37
|
Rickert D. Polymeric implant materials for the reconstruction of tracheal and pharyngeal mucosal defects in head and neck surgery. GMS CURRENT TOPICS IN OTORHINOLARYNGOLOGY, HEAD AND NECK SURGERY 2011; 8:Doc06. [PMID: 22073099 PMCID: PMC3199816 DOI: 10.3205/cto000058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The existing therapeutical options for the tracheal and pharyngeal reconstruction by use of implant materials are described. Inspite of a multitude of options and the availability of very different materials none of these methods applied for tracheal reconstruction were successfully introduced into the clinical routine. Essential problems are insufficiencies of anastomoses, stenoses, lack of mucociliary clearance and vascularisation. The advances in Tissue Engineering (TE) offer new therapeutical options also in the field of the reconstructive surgery of the trachea. In pharyngeal reconstruction far reaching developments cannot be recognized at the moment which would allow to give a prognosis of their success in clinical application. A new polymeric implant material consisting of multiblock copolymers was applied in our own work which was regarded as a promising material for the reconstruction of the upper aerodigestive tract (ADT) due to its physicochemical characteristics. In order to test this material for applications in the ADT under extreme chemical, enzymatical, bacterial and mechanical conditions we applied it for the reconstruction of a complete defect of the gastric wall in an animal model. In none of the animals tested either gastrointestinal complications or negative systemic events occurred, however, there was a multilayered regeneration of the gastric wall implying a regular structured mucosa. In future the advanced stem cell technology will allow further progress in the reconstruction of different kind of tissues also in the field of head and neck surgery following the principles of Tissue Engineering.
Collapse
Affiliation(s)
- Dorothee Rickert
- University Hospital and Ambulance for Ear, Nose and Throat Diseases, Ulm, Germany
| |
Collapse
|
38
|
The role of pharmacologically active microcarriers releasing TGF-beta3 in cartilage formation in vivo by mesenchymal stem cells. Biomaterials 2010; 31:6485-93. [PMID: 20570347 DOI: 10.1016/j.biomaterials.2010.05.013] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Accepted: 05/07/2010] [Indexed: 11/20/2022]
Abstract
Cartilage engineering using mesenchymal stem cells (MSC) will require the use of a scaffold which will act as a support for cell adhesion keeping the cells in the cartilage defect. Optimally, a tissue engineered construct should allow sustained delivery of bioactive factors capable of inducing MSC differentiation into chondrocytes and should be easily injected inside the cartilage lesions to avoid surgical operations. We therefore developed pharmacologically active microcarriers (PAM) made of poly-lactic-co-glycolic acid (PLGA) produced using an oil-in-water (o/w) emulsion method. The microspheres were coated with a biomimetic surface of fibronectin (FN) and engineered to release TGF-beta3 as a chondrogenic differentiation factor. When human MSCs were incubated in vitro with TGF-beta3 releasing FN-coated PAMs in chondrogenic medium, they firmly adhered onto the surface of PAMs rapidly forming cell aggregates. After 3 weeks, strong up-regulation of cartilage-specific markers was observed both at the mRNA and protein level whereas osteogenic or adipogenic genes could not be detected. Importantly, implantation of MSC/TGF-beta3 releasing PAM complexes in SCID mice resulted in the formation of histologically resembling cartilage which stained positive for chondrocyte markers, collagen II and aggrecan. The present study demonstrated that functionalized PLGA-based microparticles can provide an appropriate environment for chondrogenic differentiation of MSCs and should contribute to injectable biomedical device development improving in vivo cartilage engineering.
Collapse
|
39
|
|
40
|
Zhu L, Li Y, Zhang Q, Wang H, Zhu M. Fabrication of monodisperse, large-sized, functional biopolymeric microspheres using a low-cost and facile microfluidic device. Biomed Microdevices 2009; 12:169-77. [DOI: 10.1007/s10544-009-9373-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
41
|
Park JS, Woo DG, Yang HN, Na K, Park KH. Transforming growth factor β-3 bound with sulfate polysaccharide in synthetic extracellular matrix enhanced the biological activities for neocartilage formationin vivo. J Biomed Mater Res A 2009; 91:408-15. [DOI: 10.1002/jbm.a.32271] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
42
|
Ming M, Li X, Fan X, Yang D, Li L, Chen S, Gu Q, Le W. Retinal pigment epithelial cells secrete neurotrophic factors and synthesize dopamine: possible contribution to therapeutic effects of RPE cell transplantation in Parkinson's disease. J Transl Med 2009; 7:53. [PMID: 19558709 PMCID: PMC2709608 DOI: 10.1186/1479-5876-7-53] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2008] [Accepted: 06/28/2009] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND New strategies for the treatment of Parkinson's disease (PD) are shifted from dopamine (DA) replacement to regeneration or restoration of the nigro-striatal system. A cell therapy using human retinal pigment epithelial (RPE) cells as substitution for degenerated dopaminergic (DAergic) neurons has been developed and showed promising prospect in clinical treatment of PD, but the exact mechanism underlying this therapy is not fully elucidated. In the present study, we investigated whether the beneficial effects of this therapy are related to the trophic properties of RPE cells and their ability to synthesize DA. METHODS We evaluated the protective effects of conditioned medium (CM) from cultured RPE cells on the DAergic cells against 6-hydroxydopamine (6-OHDA)- and rotenone-induced neurotoxicity and determined the levels of glial cell derived neurotrophic factor (GDNF) and brain derived neurotrophic factor (BDNF) released by RPE cells. We also measured the DA synthesis and release. Finally we transplanted microcarriers-RPE cells into 6-OHDA lesioned rats and observed the improvement in apomorphine-induced rotations (AIR). RESULTS We report here: (1) CM from RPE cells can secret trophic factors GDNF and BDNF, and protect DAergic neurons against the 6-OHDA- and rotenone-induced cell injury; (2) cultured RPE cells express L-dopa decarboxylase (DDC) and synthesize DA; (3) RPE cells attached to microcarriers can survive in the host striatum and improve the AIR in 6-OHDA-lesioned animal model of PD; (4) GDNF and BDNF levels are found significantly higher in the RPE cell-grafted tissues. CONCLUSION These findings indicate the RPE cells have the ability to secret GDNF and BDNF, and synthesize DA, which probably contribute to the therapeutic effects of RPE cell transplantation in PD.
Collapse
Affiliation(s)
- Ming Ming
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, PR China.
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Lopez T, Ortiz E, Alexander-Katz R, Basaldella E, Bokhimi X. Cortisol controlled release by mesoporous silica. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2009; 5:170-7. [PMID: 19091634 DOI: 10.1016/j.nano.2008.08.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Revised: 07/15/2008] [Accepted: 08/14/2008] [Indexed: 10/21/2022]
|
44
|
Joung YK, Bae JW, Park KD. Controlled release of heparin-binding growth factors using heparin-containing particulate systems for tissue regeneration. Expert Opin Drug Deliv 2009; 5:1173-84. [PMID: 18976129 DOI: 10.1517/17425240802431811] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The strategy of growth factor delivery to specific sites for therapeutic applications has been considered an essential process in biomedical fields despite some obstacles, such as a non-controlled release with initial burst. This article focuses on particulate systems using heparin for the controlled delivery of heparin-binding growth factors (HBGFs), an emerging area in the tissue engineering field. Since heparin has been widely utilized for growth factor delivery due to its electrostatic nature and specific affinity with HBGFs, heparin-containing polymeric particulates can be utilized as functional carriers to deliver growth factors in a controlled manner. In particular, examples of the HBGF delivery systems containing heparin, perspectives and potential applications are described and discussed.
Collapse
Affiliation(s)
- Yoon Ki Joung
- Ajou University, Department of Molecular Science and Technology, 5 Wonchon, Yeoungtong, Suwon 443-749, Republic of Korea
| | | | | |
Collapse
|
45
|
Ren YJ, Zhou ZY, Cui FZ, Ying Wang, Zhao JP, Xu QY. Hyaluronic Acid/Polylysine Hydrogel as a Transfer System for Transplantation of Neural Stem Cells. J BIOACT COMPAT POL 2009. [DOI: 10.1177/0883911508099472] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Graft integration and survival are major factors that limit cell therapy for diseases and injury in the central nervous system. Efforts to improve graft survival and integration have focused on the development of biocompatible scaffolds to support neural cells. In this study, rat neural stem cells (NSC), including neurospheres and single cells, were seeded into hyaluronic acid/polylysine hydrogels. Confocal microscopy was used to noninvasively investigate the key cell phonotypes. After culture for 5 days, single NSC had survived and differentiated into neurons and astrocytes, while neurosphereforming cells had migrated from their original aggregate and maintained the NSC phonotype. These studies, carried out in the absence of serum, identified HA/polylysine hydrogels as potential synthetic cell carriers for transplantation of NSC.
Collapse
Affiliation(s)
- Yong-Juan Ren
- Biomaterials Laboratory, Department of Materials Science and Engineering, Tsinghua University Beijing 100084, People's Republic of China
| | - Zi-You Zhou
- Biomaterials Laboratory, Department of Materials Science and Engineering, Tsinghua University Beijing 100084, People's Republic of China
| | - Fu-Zhai Cui
- Biomaterials Laboratory, Department of Materials Science and Engineering, Tsinghua University Beijing 100084, People's Republic of China,
| | - Ying Wang
- Beijing Institute of Neuroscience, Capital Medical University Beijing 100054, People's Republic of China
| | - Jun-Peng Zhao
- Beijing Institute of Neuroscience, Capital Medical University Beijing 100054, People's Republic of China
| | - Qun-Yuan Xu
- Beijing Institute of Neuroscience, Capital Medical University Beijing 100054, People's Republic of China
| |
Collapse
|
46
|
Chan OCM, So KF, Chan BP. Fabrication of nano-fibrous collagen microspheres for protein delivery and effects of photochemical crosslinking on release kinetics. J Control Release 2008; 129:135-43. [PMID: 18514352 DOI: 10.1016/j.jconrel.2008.04.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Revised: 04/14/2008] [Accepted: 04/14/2008] [Indexed: 10/22/2022]
Abstract
Protein compatibility is important for protein drug delivery using microsphere-based devices. Collagen has excellent protein compatibility but has poor mechanical stability for microsphere fabrication and open meshwork for controlled release. In this study, a protein-compatible fabrication method for injectable collagen microspheres has been developed. The surface morphology, interior microstructure and protein release characteristics of collagen microspheres were investigated. Moreover, effects of photochemical crosslinking on these characteristics were also studied. Finally, the mechanisms governing the protein release and the retention of protein bioactivity were studied. Stable and injectable collagen microspheres consisting of nano-fibrous meshwork were successfully fabricated under ambient conditions in an organic solvent and crosslinking reagent-free manner. These microspheres have open meshwork and showed large initial burst and rapid release of proteins. Photochemical crosslinking significantly reduced the initial burst effect and controlled the protein release in a photosensitizer dose-dependent manner without significantly altering the mesh size. We further demonstrated that there was significantly higher protein retention within the photochemically crosslinked collagen microspheres as compared with the uncrosslinked, suggesting a secondary retention mechanism. Lastly, both surfactant treatment and photochemical crosslinking did not compromise the bioactivity of the encapsulated proteins. In summary, this study reports a novel collagen microsphere-based protein delivery system and demonstrates the possibility to use photochemical crosslinking as the secondary retention mechanism for proteins.
Collapse
Affiliation(s)
- O C M Chan
- Medical Engineering, Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region, China
| | | | | |
Collapse
|
47
|
Abstract
Spheramine (Bayer Schering Pharma AG, Berlin, Germany) is currently being tested as a new approach for the treatment of Parkinson's disease (PD). It consists of an active component of cultured human retinal pigment epithelial (hRPE) cells, attached to an excipient part of cross-linked porcine gelatin microcarrriers. Spheramine is administered by stereotactic implantation into the striatum of PD patients and the use of immunosuppression is not required. Current pharmacologic therapies of PD are oriented to the administration of dopaminergic medications. Human RPE cells produce levodopa, and this constitutes the rationale to use Spheramine for the treatment of PD. The preclinical development of Spheramine included extensive biologic, pharmacologic, and toxicologic studies in vitro and in animal models of PD. The first clinical trial in humans evaluated the safety and efficacy of Spheramine implanted in the postcommissural putamen contralateral to the most affected side in six patients with advanced PD. This open-label study demonstrated good tolerability and showed sustained motor clinical improvement. A phase II double-blind, randomized, multicenter, placebo-controlled (sham surgery) study is underway to evaluate safety, tolerability, and efficacy of Spheramine implanted bilaterally into the postcommissural putamen of patients with advanced PD. Spheramine represents a treatment approach with the potential of supplying a more continuous delivery of levodopa to the striatum in advanced PD than can be achieved with oral therapy alone.
Collapse
Affiliation(s)
- Natividad P Stover
- Department of Neurology, The University of Alabama at Birmingham, Birmingham, Alabama 35294, USA.
| | | |
Collapse
|
48
|
Silva GA, Coutinho OP, Ducheyne P, Reis RL. Materials in particulate form for tissue engineering. 2. Applications in bone. J Tissue Eng Regen Med 2008; 1:97-109. [PMID: 18038398 DOI: 10.1002/term.1] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Materials in particulate form have been the subjects of intensive research in view of their use as drug delivery systems. While within this application there are still issues to be addressed, these systems are now being regarded as having a great potential for tissue engineering applications. Bone repair is a very demanding task, due to the specific characteristics of skeletal tissues, and the design of scaffolds for bone tissue engineering presents several difficulties. Materials in particulate form are now seen as a means of achieving higher control over parameters such as porosity, pore size, surface area and the mechanical properties of the scaffold. These materials also have the potential to incorporate biologically active molecules for release and to serve as carriers for cells. It is believed that the combination of these features would create a more efficient approach towards regeneration. This review focuses on the application of materials in particulate form for bone tissue engineering. A brief overview of bone biology and the healing process is also provided in order to place the application in its broader context. An original compilation of molecules with a documented role in bone tissue biology is listed, as they have the potential to be used in bone tissue engineering strategies. To sum up this review, examples of works addressing the above aspects are presented.
Collapse
Affiliation(s)
- G A Silva
- 3Bs Research Group--Biomaterials, Biodegradables, Biomimetics-University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | | | | | | |
Collapse
|
49
|
Heparin-Bound Transforming Growth Factor-β3 Enhances Neocartilage Formation by Rabbit Mesenchymal Stem Cells. Transplantation 2008; 85:589-96. [DOI: 10.1097/tp.0b013e3181639b3a] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
50
|
Li J, Shi R. Fabrication of patterned multi-walled poly-l-lactic acid conduits for nerve regeneration. J Neurosci Methods 2007; 165:257-64. [PMID: 17644184 DOI: 10.1016/j.jneumeth.2007.06.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2006] [Revised: 06/03/2007] [Accepted: 06/04/2007] [Indexed: 10/23/2022]
Abstract
Topographical cues in the micron and nanoscale regime represent a powerful and effective method for controlling neuron and glial cell behavior. Previous studies have shown that contact guidance can facilitate axon pathfinding, accelerate neurite growth and induce glial cell alignment. In this paper, we exploit the concept of haptotaxis via implementation into three-dimensional neural based scaffolds. Polymeric poly-l-lactic acid (PLLA) conduits possessing multiple intralumenal walls and precise topography along the longitudinal axis were fabricated using solvent casting, physical imprinting and a rolling-fusing method. Measurements made on scanning electron micrographs show the conduits demonstrate a transparency factor (void to polymer ratio) of up to 87.9% and an increase in surface area of four to eight times over comparably sized hollow conduits. Intralumenal wall thickness was approximately 20 microm and physical parameters such as the number of lumens, conduit length and diameter were controllable. These results imply that the structures are conducive for cellular infiltration and proliferation. Although PLLA was used, the manufacturing techniques are highly flexible and are compatible with multiple polymer-solvent systems. Thus, the proposed conduits can be custom tailored to resorb in parallel with the healing process. Applications for these scaffolds include autograft substitutes for peripheral nerve transection or potential use in spinal cord related injuries.
Collapse
Affiliation(s)
- Jianming Li
- Weldon School of Biomedical Engineering, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA
| | | |
Collapse
|