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Cell Transplantation

Gesine Pless-Petig, Björn Walter, Anja Bienholz, Ursula Rauen
Isolated primary hepatocytes, which are widely used for pharmacological and clinical purposes, usually undergo certain periods of cold storage in suspension during processing. While adherent hepatocytes were shown previously to suffer iron-dependent cell death during cold (4 °C) storage and early rewarming, we previously found little iron-dependent hepatocyte death in suspension but severely decreased attachment ability unless iron chelators were added. Here, we focus on the role of mitochondrial impairment in this nonattachment of hepatocyte suspensions...
December 2017: Cell Transplantation
Ye Zhang, Hong Deng, Zhouping Tang
Diabetes mellitus is a widely spread chronic disease with growing incidence worldwide, and diabetic foot ulcer is one of the most serious complications of diabetes. Cellular therapy has shown promise in the management of diabetic foot ulcer in many preclinical experiments and clinical researches. Here, we performed a meta-analysis to evaluate the efficacy and safety of cellular therapy in the management of diabetic foot ulcer. We systematically searched PubMed, MEDLINE, EMBASE, and Cochrane Library databases from inception to May 2017 for randomized controlled trials assessing the efficacy of cellular therapy in diabetic foot ulcer, and a meta-analysis was conducted...
December 2017: Cell Transplantation
W Samuel Fagg, Naiyou Liu, Ming-Jim Yang, Ke Cheng, Eric Chung, Jae-Sung Kim, Gordon Wu, Jeffrey Fair
Attaining consistent robust engraftment in the structurally normal liver is an obstacle for cellular transplantation. Most experimental approaches to increase transplanted cells' engraftment involve recipient-centered deleterious methods such as partial hepatectomy or irradiation which may be unsuitable in the clinic. Here, we present a cell-based strategy that increases engraftment into the structurally normal liver using a combination of magnetic targeting and proliferative endoderm progenitor (EPs) cells...
December 2017: Cell Transplantation
Jonathan Catry, Minh Luong-Nguyen, Lousineh Arakelian, Tigran Poghosyan, Patrick Bruneval, Thomas Domet, Laurent Michaud, Rony Sfeir, Frederic Gottrand, Jerome Larghero, Valerie Vanneaux, Pierre Cattan
Tissue engineering appears promising as an alternative technique for esophageal replacement. Mesenchymal stem cells (MSCs) could be of interest for esophageal regeneration. Evaluation of the ability of an acellular matrix seeded with autologous MSCs to promote tissue remodeling toward an esophageal phenotype after circumferential replacement of the esophagus in a mini pig model. A 3 cm long circumferential replacement of the abdominal esophagus was performed with an MSC-seeded matrix (MSC group, n = 10) versus a matrix alone (control group, n = 10), which has previously been matured into the great omentum...
December 2017: Cell Transplantation
Chia-Wen Tsai, Rong-Tzong Tsai, Shih-Ping Liu, Chang-Shi Chen, Min-Chen Tsai, Shao-Hsuan Chien, Huey-Shan Hung, Shinn-Zong Lin, Woei-Cherng Shyu, Ru-Huei Fu
Parkinson's disease (PD) is the second most common degenerative disorder of the central nervous system in the elderly. It is characterized by progressive loss of dopaminergic neurons in the substantia nigra pars compacta, as well as by motor dysfunction. Although the causes of PD are not well understood, aggregation of α-synuclein (α-syn) in neurons contributes to this disease. Current therapeutics for PD provides satisfactory symptom relief but not a cure. Treatment strategies include attempts to identify new drugs that will prevent or arrest the progressive course of PD by correcting disease-specific pathogenic process...
December 2017: Cell Transplantation
Dirk Van de Putte, Christelle Demarquay, Elke Van Daele, Lara Moussa, Christian Vanhove, Marc Benderitter, Wim Ceelen, Piet Pattyn, Noëlle Mathieu
Cancer patients treated with radiotherapy (RT) could develop severe late side effects that affect their quality of life. Long-term bowel complications after RT are mainly characterized by a transmural fibrosis that could lead to intestinal obstruction. Today, surgical resection is the only effective treatment. However, preoperative RT increases the risk of anastomotic leakage. In this study, we attempted to use mesenchymal stromal cells from adipose tissue (Ad-MSCs) to improve colonic anastomosis after high-dose irradiation...
December 2017: Cell Transplantation
Ramon E Coronado, Maria Somaraki-Cormier, Shanmugasundaram Natesan, Robert J Christy, Joo L Ong, Glenn A Halff
Biologic substrates, prepared by decellularizing and solubilizing tissues, have been of great interest in the tissue engineering field because of the preservation of complex biochemical constituents found in the native extracellular matrix (ECM). The integrity of the ECM is critical for cell behavior, adhesion, migration, differentiation, and proliferation that in turn affect homeostasis and tissue regeneration. Previous studies have shown that various processing methods have a distinctive way of affecting the composition of the decellularized ECM...
December 2017: Cell Transplantation
Patrick Walsh, Vincent Truong, Caitlin Hill, Nicolas D Stoflet, Jessica Baden, Walter C Low, Susan A Keirstead, James R Dutton, Ann M Parr
The use of defined conditions for derivation, maintenance, and differentiation of human-induced pluripotent stem cells (hiPSCs) provides a superior experimental platform to discover culture responses to differentiation cues and elucidate the basic requirements for cell differentiation and fate restriction. Adoption of defined systems for reprogramming, undifferentiated growth, and differentiation of hiPSCs was found to significantly influence early stage differentiation signaling requirements and temporal kinetics for the production of primitive neuroectoderm...
December 2017: Cell Transplantation
Laura Mezzanotte, Juvita Delancy Iljas, Ivo Que, Alan Chan, Eric Kaijzel, Rob Hoeben, Clemens Löwik
Biodistribution and fate of transplanted stem cells via longitudinal monitoring has been successfully achieved in the last decade using optical imaging. However, sensitive longitudinal imaging of transplanted stem cells in deep tissue like the brain remains challenging not only due to low light penetration but because of other factors such as low or inferior expression levels of optical reporters in stem cells and stem cell death after transplantation. Here we describe an optimized imaging protocol for sensitive long-term monitoring of bone marrow-derived human mesenchymal stem cells (hMSCs) expressing a novel bioluminescent/near infrared fluorescent (NIRF) fusion reporter transplanted in mouse brain cortex...
December 2017: Cell Transplantation
Juan S Danobeitia, Peter J Chlebeck, Inna Shokolenko, Xiaobo Ma, Glenn Wilson, Luis A Fernandez
Long-term graft survival is an ongoing challenge in the field of islet transplantation. With the growing demand for transplantable organs, therapies to improve organ quality and reduce the incidence of graft dysfunction are of paramount importance. We evaluated the protective role of a recombinant DNA repair protein targeted to mitochondria (Exscien I-III), as a therapeutic agent using a rodent model of pancreatic islet transplantation. We first investigated the effect of therapy on isolated rat islets cultured with pro-inflammatory cytokines (interleukin-1 β, interferon γ, and tumor necrosis factor α) for 48 h and documented a significant reduction in apoptosis by flow cytometry, improved viability by immunofluorescence, and conserved functional potency in vitro and in vivo in Exscien I-III-treated islets...
November 2017: Cell Transplantation
Heide Brandhorst, Paul R V Johnson, Olle Korsgren, Daniel Brandhorst
Efficient islet release from the pancreas requires the combination of collagenase, neutral protease (cNP), or thermolysin (TL). Recently, it has been shown that clostripain (CP) may also contribute to efficient islet release from the human pancreas. The aim of this study was to evaluate the impact of these proteases on human islet integrity in a prospective approach. Islets were isolated from the pancreas of 10 brain-dead human organ donors. Purified islets were precultured for 3 to 4 d at 37 °C to ensure that preparations were cleared of predamaged islets, and only integral islets were subjected to 90 min of incubation at 37 °C in Hank's balanced salt solution supplemented with cNP, TL, or CP...
November 2017: Cell Transplantation
Ta-Lun Kao, Yao-Li Chen, Yu-Ping Kuan, Wei-Chun Chang, Yu-Chen Ho, Shuyuan Yeh, Long-Bin Jeng, Wen-Lung Ma
BACKGROUND: After living donor liver transplantation (LDLT), rising serum bilirubin levels commonly indicate insufficient numbers of hepatocytes are available to metabolize bilirubin into biliverdin. Recovery of bilirubin levels is an important marker of hepatocyte repopulation after LDLT. Cytochrome P450 (CYP) 2A6 in humans (or cyp2a4 in rodents) can function as "bilirubin oxidase." Functional hepatocytes contain abundant CYP2A6, which is considered a marker for hepatocyte function recovery...
November 2017: Cell Transplantation
Marta Pokrywczynska, Arkadiusz Jundzill, Karolina Warda, Lukasz Buchholz, Marta Rasmus, Jan Adamowicz, Magdalena Bodnar, Andrzej Marszalek, Anna Helmin-Basa, Jacek Michalkiewicz, Maciej Gagat, Alina Grzanka, Malgorzata Frontczak-Baniewicz, Agata Magdalena Gastecka, Tomasz Kloskowski, Maciej Nowacki, Camillo Ricordi, Tomasz Drewa
A variety of tissue engineering techniques utilizing different cells and biomaterials are currently being explored to construct urinary bladder walls de novo, but so far no approach is clearly superior. The aim of this study was to determine whether mesenchymal stem cells (MSCs) isolated from different sources, (bone marrow [BM-MSCs] and adipose tissue [ADSCs]), differ in their potential to regenerate smooth muscles in tissue-engineered urinary bladders and to determine an optimal number of MSCs for urinary bladder smooth muscle regeneration...
November 2017: Cell Transplantation
Willie Lin, Yogi Chang-Yo Hsuan, Mao-Tsun Lin, Ting-Wei Kuo, Cheng-Hsien Lin, Yu-Chin Su, Ko-Chi Niu, Ching-Ping Chang, Hung-Jung Lin
Microglia are the first source of a neuroinflammatory cascade, which seems to be involved in every phase of stroke-related neuronal damage. Two weeks after transient middle cerebral artery occlusion (MCAO), vehicle-treated rats displayed higher numbers of total ionized calcium-binding adaptor molecule 1 (Iba-1)-positive cells, greater cell body areas of Iba-1-positive cells, and higher numbers of hypertrophic Iba-1-positive cells (with a cell body area over 80 μm2) in the ipsilateral ischemic brain regions including the frontal cortex, striatum, and parietal cortex...
November 2017: Cell Transplantation
Daniel Skuk, Jacques P Tremblay
We studied in macaques the evolution of the intramuscular transplantation of muscle precursor cells between the time of administration and the time at which the graft is considered stable. Satellite cell-derived myoblasts labeled with ß-galactosidase were transplanted into 1 cm3 muscle regions following cell culture and transplantation protocols similar to our last clinical trials. These regions were biopsied 1 h, 1, 3, 7 d, and 3 wk later and analyzed by histology. We observed that the cell suspension leaks from the muscle bundles during injection toward the epimysium and perimysium, where most cells accumulate after transplantation...
November 2017: Cell Transplantation
Damien G Harkin, Siobhan E Dunphy, Audra M A Shadforth, Rebecca A Dawson, Jennifer Walshe, Nadia Zakaria
When used as scaffolds for cell therapies, biomaterials often present basic handling and logistical problems for scientists and surgeons alike. The quest for an appropriate mounting device for biomaterials is therefore a significant and common problem. In this review, we provide a detailed overview of the factors to consider when choosing an appropriate mounting device including those experienced during cell culture, quality assurance, and surgery. By way of example, we draw upon our combined experience in developing epithelial cell therapies for the treatment of eye diseases...
November 2017: Cell Transplantation
Prashanth Vallabhajosyula, Atsushi Hirakata, Matthew Weiss, Adam Griesemer, Akira Shimizu, Hanzhou Hong, Andreas Habertheuer, Vaja Tchipashvili, Kazuhiko Yamada, David H Sachs
In islet transplantation, in addition to immunologic and ischemic factors, the diabetic/hyperglycemic state of the recipient has been proposed, although not yet validated, as a possible cause of islet toxicity, contributing to islet loss during the engraftment period. Using a miniature swine model of islet transplantation, we have now assessed the effect of a persistent state of hyperglycemia on islet engraftment and subsequent function. An islet-kidney (IK) model previously described by our laboratory was utilized...
November 2017: Cell Transplantation
Ruslan L Nuryyev, Toni L Uhlendorf, Wesley Tierney, Suren Zatikyan, Oleg Kopyov, Alex Kopyov, Jessica Ochoa, William Van Trigt, Cindy S Malone, Randy W Cohen
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), a model of ataxia. The sHW rat suffers from neurodegeneration of specific neurons, including cerebellar Purkinje cells and hippocampal CA3 pyramidal cells leading to the observed symptoms of forelimb tremor, hind-leg rigidity, gait abnormality, motor incoordination, and a shortened life span...
November 2017: Cell Transplantation
Tang-Her Jaing, Shih-Hsiang Chen, Yu-Chuan Wen, Tsung-Yen Chang, Dai-Yun Tsai, Hung-Tao Chung, Pei-Kwei Tsay
The objective of this study was to determine the incidence, risk factors, outcome, and clinical significance of pericardial effusion (PE). We retrospectively analyzed outcomes of 272 pediatric patients undergoing their first hematopoietic stem cell transplantation (HSCT) from 1998 to 2016. In total, 15% (3/20) and 5.9% (15/252) of autologous and allogeneic HSCT recipients, respectively, were identified with PE. However, there was no statistically significant difference in the incidence of PE between the 2 groups...
November 2017: Cell Transplantation
Bronwyn Fullagar, Wei Rao, Chen Gilor, Feng Xu, Xiaoming He, Christopher A Adin
Pancreatic islet transplantation is the only curative, noninvasive treatment for type 1 diabetes mellitus; however, high rates of cell death in the immediate postimplantation period have limited the success of this procedure. Bilirubin, an endogenous antioxidant, can improve the survival of murine pancreatic allografts during hypoxic stress but has poor solubility in aqueous solutions. We hypothesized that nano-encapsulation of bilirubin in pluronic 127-chitosan nanoparticle bilirubin (nBR) would improve uptake by murine pancreatic islet cells and improve their viability following hypoxic stress...
October 2017: Cell Transplantation
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