Abstract:
:This study suggests a novel method of stabilizing fragile porcine islets to prevent the dissociation after isolation and reducing immune cell invasion in a combination therapy of 'surface camouflaging' and immunosuppressive drugs (FK506, Rapamycin, MR-1, anti-CD19 mAb, and Clodrosome(®)) to effectively alleviate overall immune reactions against xenotransplanted porcine islets. The surface camouflage of pancreatic islets using biocompatible materials improved stabilization of pancreatic islet and prevented the infiltration of immune cells. Firstly, the surface of porcine islets was camouflaged by SH-6-arm-PEG-lipid and gelatin-catechol (artificial extracellular matrix) in order to stabilize the fragile isolated islets. Secondly, three different PEG layers (6-arm-PEG-SH, 6-arm-PEG-catechol, and linear PEG-SH) were chemically conjugated onto the surface of the stabilized porcine islets. Both artificial extracellular matrix (artificial ECM) and PEGylation effectively covered the surface of porcine islets without increasing the size of the whole islet. In addition, the viability and functionality of the islets were not affected by this multi-layer surface modification. The multi-layer modification significantly reduced the attachment of human serum albumin, fibronectin, and immunoglobulin G in comparison to the control collagen surface. The combination effect of multi-layer PEGylation and cocktailed immunosuppressive drugs on the survival time of the transplanted islets was assessed in a xenogeneic porcine-to-mouse model. The median survival time (MST) of 'artificial ECM + PEGylation' group was 4-fold increased compared to that of control group. In addition, the MST of 'artificial ECM + PEGylation + drug' group was 2.16-fold increased, compared to the 'control + drug' group. In conclusion, we proposed a novel porcine islet transplantation protocol using surface multi-layer modification and cocktailed immunosuppressive drugs, for stabilization and immunoprotection against xenogeneic immune reactions.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Haque MR,Jeong JH,Byun Ydoi
10.1016/j.biomaterials.2016.01.039subject
Has Abstractpub_date
2016-04-01 00:00:00pages
144-156eissn
0142-9612issn
1878-5905pii
S0142-9612(16)00053-3journal_volume
84pub_type
杂志文章相关文献
BIOMATERIALS文献大全abstract::The management of trauma-associated nerve defects is difficult because of the absence of autologous donor motor or sensory nerves. Pre-clinical development and clinical experience has shown that damaged nerves can be surgically repaired using a tubular conduit interposed across the defect. Acceptable patient outcomes ...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2007.08.023
更新日期:2008-01-01 00:00:00
abstract::The efficient delivery of short interfering RNA (siRNA) is an enormous challenge in the field of gene therapy. Herein, we report a delivery nanosystem based on programmed DNA self-assembly mammalian target of rapamycin (mTOR) siRNA-loaded DNA nanotubes (DNA-NTs). We demonstrate that these siRNA-DNA-NTs can be effectiv...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2015.07.015
更新日期:2015-10-01 00:00:00
abstract::Directed embryonic stem (ES) cell differentiation is a potentially powerful approach for generating a renewable source of cells for regenerative medicine. Typical in vitro ES cell differentiation protocols involve the formation of ES cell aggregate intermediates called embryoid bodies (EBs). Recently, we demonstrated ...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2007.10.030
更新日期:2008-02-01 00:00:00
abstract::The present study deals with the synthesis and characterization of radiopaque polymers which could, when solubilized in an appropriate water-miscible solvent, be useful embolic materials for the treatment of cerebral aneurysms and arteriovenous malformations. For this purpose cellulose (both microcrystalline and powde...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(01)00087-4
更新日期:2002-01-01 00:00:00
abstract::To fully understand biological behavior in vitro often dictates that oxygen be reported at either a local or a cellular level. Oxygen sensors based on the luminescent quenching of a specific form of electrospun fiber were developed for measurement of both gaseous and dissolved oxygen concentrations. Electrospinning wa...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2015.10.055
更新日期:2016-01-01 00:00:00
abstract::Saturated neoglycopolymers, prepared via tandem ROMP-hydrogenation (ROMP=ring-opening metathesis polymerization) of carbohydrate-functionalized norbornenes, are investigated as novel collagen crosslinking agents in corneal tissue engineering. The neoglycopolymers were incorporated into recombinant human collagen type ...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2009.06.016
更新日期:2009-10-01 00:00:00
abstract::In order to investigate the effects of different degrees of bioactivity of xerogels on connexin 43 (cx43) signaling of osteoclasts a cell culture approach was developed. Cells isolated from peripheral blood mononuclear cells were cultured in combination with the xerogels and were harvested for further investigations o...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2013.11.002
更新日期:2014-02-01 00:00:00
abstract::The development of biocompatible photopolymerizing polymers for biomedical and tissue engineering applications has the potential to reduce the invasiveness and cost of biomaterial implants designed to repair or augment tissues. However, more information is needed about the cellular toxicity of the compounds and initia...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2004.04.024
更新日期:2005-04-01 00:00:00
abstract::Quinacrine and related heterocyclic compounds have antiprion activity. Since the infectious pathogen of prion diseases is composed of multimeric PrP(Sc) assemblies, we hypothesized that this antiprion property could be enhanced by attaching multiple quinacrine-derived chloroquinoline or acridine moieties to a scaffold...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2012.06.004
更新日期:2012-10-01 00:00:00
abstract::Albumin is a promising surface modifier of nanoparticulate drug delivery systems. Serving as a dysopsonin, albumin can protect circulating nanoparticles (NPs) from the recognition and clearance by the mononuclear phagocytic system (MPS). Albumin may also help transport the NPs to solid tumors based on the increased co...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2018.07.024
更新日期:2018-10-01 00:00:00
abstract::Nanocrystalline diamond (NCD) films and nanoparticulate diamond powder (DP) are the two main representatives of diamond at the nanoscale. This study was designed to investigate the suitability of these biomaterials as cell growth supports and to determine surface characteristic properties best suited to cell attachmen...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2008.07.023
更新日期:2008-11-01 00:00:00
abstract::Stimuli-responsive nanoparticles hold great promise for drug delivery to improve the safety and efficacy of cancer therapy. One of the most investigated stimuli-responsive strategies is to induce drug release by heating with laser, ultrasound, or electromagnetic field. More recently, cryosurgery (also called cryothera...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2018.07.021
更新日期:2018-10-01 00:00:00
abstract::Ultra-high molecular-weight polyethylene (UHMWPE) has been used in total joint replacement for the last three decades. Despite the recent advancements in prosthesis design, the wear of UHMWPE remains a serious clinical problem; the release of wear debris may induce osteolysis and implant loosening. Controlling the qua...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(03)00264-3
更新日期:2003-10-01 00:00:00
abstract::In this work, five self-assembled monolayers (SAMs) and three polymeric brushes with very low fibrinogen adsorption were prepared. The five SAMs are oligo(ethylene glycol) (OEG), phosphorylcholine (PC), oligo(phosphorylcholine) (OPC), and two mixed positively and negatively charged SAMs of SO(3)(-)/N(+)(CH(3))(3) (SA/...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2008.07.039
更新日期:2008-11-01 00:00:00
abstract::A newly developed bone equivalent hydroxyapatite was derived from veterinary bone (VHAP). Sections of 1 cm of six rabbit mandibles were equally replaced by this VHAP graft. Radiological studies by X-ray were performed pre-operatively, immediately, and 1, 2 and 3 months post-operatively. The graft host-bone interface w...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/0142-9612(94)90211-9
更新日期:1994-06-01 00:00:00
abstract::Alginate hydrogels are used extensively in cell encapsulation, cell transplantation, and tissue engineering applications. Alginates possess many favorable properties required in biomaterials, but are unable to specifically interact with mammalian cells. We have therefore covalently modified alginate polysaccharides wi...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(98)00107-0
更新日期:1999-01-01 00:00:00
abstract::We previously reported that modification of GALA peptide on the surface of liposomes enhanced fusion with endosomal membrane, and cytoplasmic release of encapsulated macromolecules. We report herein that an additional coating of GALA-modified liposomes with 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer result...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2010.04.031
更新日期:2010-08-01 00:00:00
abstract::A type III glass-ionomer cement (Vidrion F), currently used as fast-setting lining material and fissure sealant, was implanted into rat dental alveolus immediately after tooth extraction and its biocompatibility was analysed in terms of incorporation into alveolar bone in the wound healing process. Histological and hi...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(96)00110-x
更新日期:1997-01-01 00:00:00
abstract::The effects of chitin [(1 --> 4)-2-acetamido-2-deoxy-beta-D-glucan] and its partially deacetylated derivatives, chitosans, on the proliferation of human dermal fibroblasts and keratinocytes were examined in vitro. Chitosans with relatively high degrees of deacetylation strongly stimulated fibroblast proliferation whil...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(01)00042-4
更新日期:2001-11-01 00:00:00
abstract::Copolymers of N-(2-hydroxypropyl)methacrylamide (HPMA) are prototypic and well-characterized polymeric drug carriers that have been broadly implemented in the delivery of anticancer therapeutics. To demonstrate that polymers, as liposomes, can be used for simultaneously delivering multiple chemotherapeutic agents to t...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2009.02.040
更新日期:2009-07-01 00:00:00
abstract::The first calcium phosphate cements (CPCs) were discovered in the 1980s. Two decades later, the interest for these materials is still rising. The goal of the present document is to review the most recent achievements in the field and to analyze future directions in research and development. ...
journal_title:Biomaterials
pub_type: 杂志文章,评审
doi:10.1016/j.biomaterials.2005.03.049
更新日期:2005-11-01 00:00:00
abstract::We describe here for the first time an efficient high yield production method for clinical grade recombinant human Oncofetal Antigen/immature laminin receptor protein (OFA/iLRP). We also demonstrate significant antitumor activity for this protein when administered in liposomal delivery form in a murine model of syngen...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2009.02.022
更新日期:2009-06-01 00:00:00
abstract::The objective of this research was to investigate whether immobilized anti-inflammatory cytokines will signal changes in the inflammatory profile of cultured monocytes. A fusion protein of recombinant human IL-1 receptor antagonist and elastin-like peptide (IL-1ra-ELP) was expressed in Escherichia coli. THP-1 human mo...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2007.04.010
更新日期:2007-08-01 00:00:00
abstract::Cell sheet technology has emerged as an important tissue engineering approach. Adipose-derived stem cells (ASCs) have valuable applications in regenerative medicine, but their stemness and differentiation capabilities in the cell sheet format have not been well investigated. In this study, we found that l-ascorbate 2-...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2014.01.015
更新日期:2014-04-01 00:00:00
abstract::Tissue-engineering technology employing genetically-modified mesenchymal stem cells combined with proper scaffolds represents a promising strategy for bone regeneration. Elucidating the underlying mechanisms that govern the osteogenesis of mesenchymal stem cells will give deeper insights into the regulatory patterns, ...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2015.10.042
更新日期:2016-01-01 00:00:00
abstract::Leaflet tissue specimens prepared from porcine aortic valves treated with glutaraldehyde at low and high pressures have been subjected to 0.45 x 10(9) accelerated fatigue cycles in Ringer's solution. The waveform or crimped property of the collagen fibres in the leaflet tissue is an essential requirement for its abili...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/0142-9612(80)90049-6
更新日期:1980-01-01 00:00:00
abstract::Efficient delivery of small interfering RNA (siRNA) or small hairpin RNA (shRNA) is a critical concern in RNA interference (RNAi) studies. In the present study, we evaluated biodegradable poly(beta-amino ester) (PAE) carrier composed of low molecular weight polyethylenimine and poly(ethylene glycol) for si/shRNA deliv...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2008.02.018
更新日期:2008-06-01 00:00:00
abstract::Glioma is still hard to be treated due to their complex microenvironment. In this study, a gold nanoparticle-based delivery system was developed. The system, An-PEG-DOX-AuNPs, was loaded with doxorubicin (DOX) through hydrazone, an acid-responsive linker, and was functionalized with angiopep-2, a specific ligand of lo...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2014.10.007
更新日期:2015-01-01 00:00:00
abstract::Endocytosis is a fundamental biological process and is also the key mechanism for drug and non-viral gene delivery. The importance of topographical cues in modulating cell behaviors has become increasingly evident, but the influence of topography on endocytosis has however only been sparsely studied. We hypothesize th...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2011.08.088
更新日期:2011-12-01 00:00:00
abstract::PVA-AA, an esterification product of poly(vinyl alcohol) and acryloyl chloride, was synthesized and tested for its dentine bonding ability as an additive to 2-hydroxyethyl methacrylate (HEMA). The dentine bonding strength increased significantly by increasing the concentration of PVA-AA in HEMA. The dentine tensile bo...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(96)00142-1
更新日期:1997-02-01 00:00:00