Abstract:
:Porcine islets show notoriously low insulin secretion levels in response to glucose stimulation. While this is somehow expected in the case of immature islets isolated from fetal and neonatal pigs, disappointingly low secretory responses are frequently reported in studies using in vitro-maturated fetal and neonatal islets and even fully differentiated adult islets. Herein we show that β-cell-specific expression of a modified glucagon-like peptide-1 (GLP-1) and of a constitutively activated type 3 muscarinic receptor (M3R) efficiently amplifies glucose-stimulated insulin secretion (GSIS). Both adult and neonatal isolated pig islets were treated with adenoviral expression vectors carrying sequences encoding for GLP-1 and/or M3R. GSIS from transduced and control islets was evaluated during static incubation and dynamic perifusion assays. While expression of GLP-1 did not affect basal or stimulated insulin secretion, activated M3R produced a twofold increase in both first and second phases of GSIS. Coexpression of GLP-1 and M3R caused an even greater increase in the secretory response, which was amplified fourfold compared to controls. In conclusion, our work highlights pig islet insulin secretion deficiencies and proposes concomitant activation of cAMP-dependent and cholinergic pathways as a solution to ameliorate GSIS from pig islets used for transplantation.
journal_name
Cell Transplantjournal_title
Cell transplantationauthors
Mourad NI,Perota A,Xhema D,Galli C,Gianello Pdoi
10.3727/096368916X693798subject
Has Abstractpub_date
2017-05-09 00:00:00pages
901-911issue
5eissn
0963-6897issn
1555-3892journal_volume
26pub_type
杂志文章abstract::Biological pacing has been proposed as a physiologic counterpart to electronic pacing, and the sinoatrial node (SAN) is the general standard for biological pacemakers. We tested the expression of SAN pacemaker cell activity when implanted autologously in the right ventricle (RV). We induced complete heart block and i...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368911X565038
更新日期:2011-01-01 00:00:00
abstract::Human marrow stromal cells (hMSCs) provide functional benefit in rats subjected to stroke. Astrocytes are coupled into a cellular network via gap junction channels, predominantly composed of connexin-43 (Cx43) proteins. Astrocytes are believed to play a vital role in neuroprotection by providing energy substrates to n...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/000000005783983205
更新日期:2005-01-01 00:00:00
abstract::A newly developed immunosuppressant, FTY720, has a unique mechanism that is quite different from those of conventional immunosuppressants, and is presumed to be mediated through decreases in the number of peripheral lymphocytes, especially helper T cells. This study was performed to ascertain whether this innovative d...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1016/s0963-6897(98)00021-9
更新日期:1998-07-01 00:00:00
abstract::Spinal cord injury (SCI) causes loss of neural functions below the level of the lesion due to interruption of spinal pathways and secondary neurodegenerative processes. The transplant of neural stem cells (NSCs) is a promising approach for the repair of SCI. Reprogramming of adult somatic cells into induced pluripoten...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368916X691312
更新日期:2016-10-01 00:00:00
abstract::In our previous study, intracerebral implantation of peripheral blood stem cells (PBSCs) improved functional outcome in rats with chronic cerebral infarction. Based on this finding, a randomized, single blind controlled study was conducted in 30 patients [PBSC group (n = 15) and control group (n = 15)] with middle cer...
journal_title:Cell transplantation
pub_type: 杂志文章,随机对照试验
doi:10.3727/096368914X678562
更新日期:2014-01-01 00:00:00
abstract::Xenotransplantation of porcine fetal ventral mesencephalic (pfVM) cells to overcome the dopamine shortage in the striatum of patients with Parkinson's disease seems a viable alternative to allotransplantion of human fetal donor tissue, especially because the latter is complicated by both practical and ethical issues. ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/000000006783981846
更新日期:2006-01-01 00:00:00
abstract::In human neonates, immature GABAergic interneurons are markedly affected by an excitotoxic insult. While in adults the interest of cell transplantation has been demonstrated in several neurological disorders, few data are available regarding the immature brain. The low survival rate constitutes a strong limitation in ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368913X670174
更新日期:2014-01-01 00:00:00
abstract::Ten mongrel dogs were used in this study. Diabetes was chemically induced in 7 dogs, and 3 dogs served as normal controls. For each diabetic dog, 5 million human bone marrow-derived mesenchymal stem cells/kg were differentiated to form insulin-producing cells using a trichostatin-based protocol. Cells were then loaded...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1177/0963689718759913
更新日期:2018-06-01 00:00:00
abstract::Gammopathies, multiple myeloma, and amyloidosis are plasma dyscrasias characterized by clonal proliferation and immunoglobulin overproduction. Renal impairment is the most common and serious complication with an incidence of 20-30% patients at the diagnosis. Kidney transplant has not been considered feasible in the pr...
journal_title:Cell transplantation
pub_type: 杂志文章,评审
doi:10.3727/096368915X688560
更新日期:2016-01-01 00:00:00
abstract::Pancreas procurement for islet isolation and transplantation is limited by concerns for the detrimental effects of postmortem ischemia. Hypothermic machine perfusion (HMP) preservation technology has had a major impact in circumventing ischemic injury in clinical kidney transplantation and is applied here to the prese...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368910X486316
更新日期:2010-01-01 00:00:00
abstract::The use of regenerative medicine to treat nervous system disorders like ataxia has been proposed to either replace or support degenerating neurons. In this study, we assessed the ability of human neural progenitor cells (hNPCs) to repair and restore the function of dying neurons within the spastic Han-Wistar rat (sHW)...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1177/0963689717723637
更新日期:2017-11-01 00:00:00
abstract::During the past 15 years, a variety of peptides, known as protein transduction domains (PTDs), or cell-penetrating peptides (CPPs), have been characterized for their ability to translocate into live cells. There are now numerous examples of biologically active full-length proteins and peptides that have been successfu...
journal_title:Cell transplantation
pub_type: 杂志文章,评审
doi:10.3727/096368910X508744
更新日期:2010-01-01 00:00:00
abstract::Duchenne muscular dystrophy (DMD) is an inherited disease and a main target of myogenic cell transplantation (MT). After the failure of the first clinical trials with DMD patients, the poor migration of transplanted cells has been suspected to be a major problem for a more effective clinical application of MT. Previou...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368909X470900
更新日期:2009-01-01 00:00:00
abstract::In multiple sclerosis (MS), a chronic inflammatory relapsing demyelinating disease, failure to control or repair damage leads to progressive neurological dysfunction and neurodegeneration. Implantation of neural stem cells (NSCs) has been shown to promote repair and functional recovery in the acute experimental autoi...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368911X637443
更新日期:2012-01-01 00:00:00
abstract::Several clinical trials of bone marrow cell infusion in patients with liver cirrhosis (LC) have shown clinical improvement, despite conflicting results from animal models. We investigated serial pathological features and the clinical impact after autologous bone marrow infusion (ABMI) in patients with advanced LC. Ten...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368910X506863
更新日期:2010-01-01 00:00:00
abstract::The requirement for more effective cryopreservation (CP) methodologies in support of the emerging fields of cell bioprocessing and cell therapy is now critical. Current CP strategies appropriately focus on minimizing the damaging actions of physicochemical stressors and membrane disruption associated with extra- and i...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:
更新日期:2001-01-01 00:00:00
abstract::The recent advent of endoscopy has enabled the endoscopic submucosal dissection (ESD) of superficial nonampullary duodenal epithelial tumors. However, the substantially thin wall and presence of bile and pancreatic juice make it technically difficult to perform duodenal ESD without perforation, which leads to lethal c...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1177/0963689720963882
更新日期:2020-01-01 00:00:00
abstract::Addition of embryonic striatal tissue, usually as a combination of the lateral and medial ganglionic eminences, to intrastriatal mesencephalic grafts has previously been reported to enhance recovery of drug-induced rotational behavior in the host and to modify axonal fiber outgrowth from the grafted dopaminergic neuro...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:
更新日期:1997-05-01 00:00:00
abstract::An important challenge in pancreatic islet transplantation in association with type 1 diabetes is to define automatic high-throughput assays for evaluation of human islet function. The physiological techniques presently used are amenable to small-scale experimental samples and produce descriptive results. The postgeno...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:
更新日期:2008-01-01 00:00:00
abstract::Hepatocyte transplantation is dependent on the availability of good quality human hepatocytes isolated from donor liver tissue. Hepatocytes obtained from livers rejected for transplantation on the grounds of steatosis are often of low viability and not suitable for clinical use. The aim of this study was to evaluate t...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368910X514620
更新日期:2010-01-01 00:00:00
abstract::Embedded-culture of pancreatic beta-cells derived from a transgenic mouse insulinoma (MIN6 cells) was studied in vitro and in vivo. The MIN6 cells were enmeshed in an agarose-PVMA-collagen matrix for long-term maintenance. The cells formed islet-like cell clusters (ICCs) in the mixed matrix. When 10 mmol/L nicotinamid...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1016/0963-6897(95)00001-e
更新日期:1995-05-01 00:00:00
abstract::Liver transplantation is the only existing modality for treating decompensated liver cirrhosis. Several factors, such as nonavailability of donors, combined with operative risks, complications associated with rejection, usage of immunosuppressive agents, and cost intensiveness, make this strategy available to only a f...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368910X498241
更新日期:2010-01-01 00:00:00
abstract::Superparamagnetic iron oxide nanoparticles (MNPs) together with magnetic resonance imaging (MRI) are the preferred tools for monitoring the fate and biodistribution of administered cells in stem cell therapy studies. Commercial MNPs need transfection agents and long incubation times for sufficient cell labeling and fu...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368916X691303
更新日期:2016-10-01 00:00:00
abstract::The third-generation NOD/LtSz-scid/IL2Rγ(null) (NOD/SCID IL2Rγ(null)) mouse represents a significantly improved xenograft model allowing high levels of human leukocyte engraftment over extended follow up. One remaining limitation of this mouse model, however, is the low level of circulating human erythrocytes. We esta...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368910X314161
更新日期:2010-01-01 00:00:00
abstract::Mesenchymal stem cells (MSCs) hold great promise for bone regeneration. However, the power of mesenchymal stem cells has not been applied to structural bone allografts in clinical practice. This study designed a new strategy to enhance the efficiency of allografts for segmental bone regeneration. Isolated MSCs were cu...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368909788809839
更新日期:2009-01-01 00:00:00
abstract::Previous observations in heat-shocked pig islets revealed the ambivalent character of the stress response simultaneously inducing processes of protection and apoptosis. To clarify whether the proapoptotic character of the stress response is reduced in heat-exposed islets still embedded in their native environment, hyp...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/000000007783465163
更新日期:2007-01-01 00:00:00
abstract::This invited concise review was written for the special issue of Cell Transplantation to celebrate the 25th anniversary of the American Society for Neural Therapy and Repair (ASNTR). I aimed to present a succinct summary of two interweaved lines of research work carried out by my team members and collaborators over th...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1177/0963689719850088
更新日期:2019-04-01 00:00:00
abstract::The technologies for adipose tissue harvesting, processing, and transplantation have substantially evolved in the past two decades. Clinically driven advancements have paralleled a significant improvement in the understanding of cellular, molecular, and immunobiological events surrounding cell and tissue transplantati...
journal_title:Cell transplantation
pub_type: 杂志文章,评审
doi:10.3727/096368910X507187
更新日期:2010-01-01 00:00:00
abstract::The transplantation of encapsulated dopamine-secreting cells into the striatum represents one potential means of treating Parkinson's disease. The present study investigated the ability of encapsulated PC12 cells, which are derived from rat pheochromocytoma, to supply L-dopa and dopamine into the primate brain in the ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.1177/096368970000900519
更新日期:2000-09-01 00:00:00
abstract::Ensheathing glia have been demonstrated to have neuroregenerative properties but this cell type from human sources has not been extensively studied because tissue samples are not easily obtained, primary cultures are slow growing, and human cell lines are not available. We previously isolated immortalized ensheathing ...
journal_title:Cell transplantation
pub_type: 杂志文章
doi:10.3727/096368910X522108
更新日期:2011-01-01 00:00:00