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Stem cell transplantation

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https://www.readbyqxmd.com/read/28107664/safety-and-efficacy-of-cardiopoietic-stem-cells-in-the-treatment-of-post-infarction-left-ventricular-dysfunction-from-cardioprotection-to-functional-repair-in-a-translational-pig-infarction-model
#1
Maximilian Y Emmert, Petra Wolint, Andras Jakab, Sean P Sheehy, Francesco S Pasqualini, Thi Dan Linh Nguyen, Monika Hilbe, Burkhardt Seifert, Benedikt Weber, Chad E Brokopp, Dominika Macejovska, Etem Caliskan, Arnold von Eckardstein, Ruth Schwartlander, Viola Vogel, Volkmar Falk, Kevin Kit Parker, Mariann Gyöngyösi, Simon P Hoerstrup
To date, clinical success of cardiac cell-therapies remains limited. To enhance the cardioreparative properties of stem cells, the concept of lineage-specification through cardiopoietic-guidance has been recently suggested. However, so far, only results from murine studies and from a clinical pilot-trial in chronic heart-failure (CHF) are available, while systematic evidence of its therapeutic-efficacy is still lacking. Importantly, also no data from large animals or for other indications are available. Therefore, we here investigate the therapeutic-efficacy of human cardiopoietic stem cells in the treatment of post-infarction LV-dysfunction using a translational pig-model...
November 23, 2016: Biomaterials
https://www.readbyqxmd.com/read/28107610/tonsil-derived-mesenchymal-stem-cells-t-mscs-prevent-th17-mediated-autoimmune-response-via-regulation-of-the-programmed-death-1-programmed-death-ligand-1-pd-1-pd-l1-pathway
#2
Ji-Yon Kim, Minhwa Park, Yu-Hee Kim, Kyung-Ha Ryu, Kyung Ho Lee, Kyung-Ah Cho, So-Youn Woo
Our knowledge of the immunomodulatory role of mesenchymal stem cells (MSCs) in both the innate and adaptive immune systems has dramatically expanded, providing great promise for treating various autoimmune diseases. However, the contribution of MSCs to Th17 dominant immune disease, such as psoriasis and its underlying mechanism remains elusive. In this study, we demonstrated that human palatine tonsil-derived MSCs (T-MSCs) constitutively express both the membrane-bound and soluble forms of programmed death-ligand 1 (PD-L1), which enables T-MSCs to be distinguished from MSCs originating from other organs (i...
January 20, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28107369/impact-of-donor-activating-kir-genes-on-hsct-outcome-in-c1-ligand-negative-myeloid-disease-patients-transplanted-with-unrelated-donors-a-retrospective-study
#3
Christine Neuchel, Daniel Fürst, Dietger Niederwieser, Donald Bunjes, Chrysanthi Tsamadou, Gerald Wulf, Michael Pfreundschuh, Eva Wagner, Gernot Stuhler, Hermann Einsele, Hubert Schrezenmeier, Joannis Mytilineos
Natural Killer cells (NK) are lymphocytes with the potential to recognize and lyse cells which escaped T-cell mediated lysis due to their aberrant HLA expression profiles. Killer cell immunoglobulin-like receptors (KIR) influence NK-cell activity by mediation of activating or inhibitory signals upon interaction with HLA-C (C1, C2) ligands. Therefore, absence of ligands for donor inhibitory KIRs following hematopoietic stem cell transplantation (HSCT) may have an influence on its outcome. Previous studies showed that C1 negative patients have a decreased HSCT outcome...
2017: PloS One
https://www.readbyqxmd.com/read/28107194/transdifferentiation-of-human-male-germline-stem-cells-to-hepatocytes-in-vivo-via-the-transplantation-under-renal-capsules
#4
Zheng Chen, Minghui Niu, Min Sun, Qingqing Yuan, Chencheng Yao, Jingmei Hou, Hong Wang, Liping Wen, Hongyong Fu, Fan Zhou, Zheng Li, Zuping He
Here we proposed a new concept that human spermatogonial stem cells (SSCs) can transdifferentiate into hepatocytes in vivo. We first established liver injury model of mice by carbon tetrachloride to provide proper environment for human SSC transplantation. Liver mesenchymal cells were isolated from mice and identified phenotypically. Human SSC line was recombined with liver mesenchymal cells, and they were transplanted under renal capsules of nude mice with liver injury. The grafts expressed hepatocyte hallmarks, including ALB, AAT, CK18, and CYP1A2, whereas germ cell and SSC markers VASA and GPR125 were undetected in these cells, implicating that human SSCs were converted to hepatocytes...
January 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28106913/efficacy-of-50%C3%A2-hz-electromagnetic-fields-on-human-epidermal-stem-cell-transplantation-seeded-in-collagen-sponge-scaffolds-for-wound-healing-in-a-murine-model
#5
Wen-Fang Bai, Wei-Cheng Xu, Hong-Xiang Zhu, Hong Huang, Bo Wu, Ming-Sheng Zhang
To explore the possible efficacy of electromagnetic fields (EMF) for skin tissue engineering, effects of EMF exposure on epidermal stem cells (ESC) seeded in collagen sponge scaffolds for wound healing in a murine model were investigated. The wound models of a full-thickness defect established with 36 7 ∼ 8-week-old nude mice were randomly divided into three groups: a control group, an ESC-only group, and an ESC with EMF exposure group (frequency of 50 Hz, magnetic induction of 5 mT, 60 min per day for 20 days)...
January 20, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28106884/excess-reactive-oxygen-species-production-mediates-monoclonal-antibody-induced-human-embryonic-stem-cell-death-via-oncosis
#6
Ji Yun Zheng, Heng Liang Tan, Paul Thomas Matsudaira, Andre Choo
Antibody-mediated cell killing has significantly facilitated the elimination of undesired cells in therapeutic applications. Besides the well-known Fc-dependent mechanisms, pathways of antibody-induced apoptosis were also extensively studied. However, with fewer studies reporting the ability of antibodies to evoke an alternative form of programmed cell death, oncosis, the molecular mechanism of antibody-mediated oncosis remains underinvestigated. In this study, a monoclonal antibody (mAb), TAG-A1 (A1), was generated to selectively kill residual undifferentiated human embryonic stem cells (hESC) so as to prevent teratoma formation upon transplantation of hESC-derived products...
January 20, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28106629/heat-shock-protein-70-overexpression-in-adipose-derived-stem-cells-enhances-fat-graft-survival
#7
Hao Feng, Lihong Qiu, Teng Zhang, Houyou Yu, Xianjie Ma, Yingjun Su, Hui Zheng, Yong Wang, Chenggang Yi
BACKGROUND: Autologous fat grafting is a prevalent technique used for soft-tissue augmentation; however, the poor survival rate of the grafted tissue remains a drawback of this method. Although adipose-derived stem cells (ASCs) are an attractive candidate for enhancing graft retention, the poor posttransplantation viability of these cells limits their application. Here we investigated whether overexpression of the antiapoptotic protein heat-shock protein 70 (Hsp70) could enhance ASCs' therapeutic potential for fat transplant survival...
January 19, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28106505/pulp-vascularization-during-tooth-development-regeneration-and-therapy
#8
C Rombouts, T Giraud, C Jeanneau, I About
The pulp is a highly vascularized tissue situated in an inextensible environment surrounded by rigid dentin walls, with the apical foramina being the only access. The pulp vascular system is not only responsible for nutrient supply and waste removal but also contributes actively to the pulp inflammatory response and subsequent regeneration. This review discusses the underlying mechanisms of pulp vascularization during tooth development, regeneration, and therapeutic procedures, such as tissue engineering and tooth transplantation...
February 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28106291/ocular-effects-of-sulfur-mustard-and-therapeutic-approaches-a-review
#9
Yunes Panahi, Seyyed Mahdi Rajaee, Amirhossein Sahebkar
Sulfur mustard (SM) is a strong blistering, highly reactive, lipophilic chemical war agent that causes injury in different organs including the skin, eyes and respiratory tract. The Eyes are especially susceptible to the consequences of SM poisoning because of the aqueous and mucosal nature of conjunctiva and cornea. DNA alkylation and depletion of glutathione, are the most important mechanisms of SM action in the eye injuries. Acute clinical symptoms are including decrease in visual acuity, dryness, photophobia, blepharospasm, conjunctivitis and complaints of foreign body sensation and soreness that gradually progress to severe ocular pain...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28106236/chorioretinal-folds-in-a-patient-with-multiple-myeloma-treated-with-stem-cell-transplant
#10
Jia S Poon, Kaveh Vahdani, Adam P Booth
PURPOSE: To report an unusual case of bilateral choroidal folds related to multiple myeloma. METHODS: In this case report, fundus photography, fundus fluorescein angiography, fundus autofluorescence, and B-ultrasonography were used to assess posterior segment changes. RESULTS: A 55-year-old woman with history of multiple myeloma was found to have abnormal fundi. Clinical examination and investigations confirmed chorioretinal folds, which was considered to be related to myeloma...
January 16, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28106077/mesenchymal-stem-cell-transplantation-in-tight-skin-mice-identifies-mir-151-5p-as-a-therapeutic-target-for-systemic-sclerosis
#11
Chider Chen, Dandan Wang, Alireza Moshaverinia, Dawei Liu, Xiaoxing Kou, Wenjing Yu, Ruili Yang, Lingyun Sun, Songtao Shi
Systemic sclerosis (SSc), an autoimmune disease, may cause significant osteopenia due to activation of the IL4Rα/mTOR pathway. Mesenchymal stem cell transplantation (MSCT) can ameliorate immune disorders in SSc via inducing immune tolerance. However, it is unknown whether MSCT rescues osteopenia phenotype in SSc. Here we show that MSCT can effectively ameliorate osteopenia in SSc mice by rescuing impaired lineage differentiation of the recipient bone marrow MSCs. Mechanistically, we show that donor MSCs transfer miR-151-5p to the recipient bone marrow MSCs in SSc mice to inhibit IL4Rα expression, thus downregulating mTOR pathway activation to enhance osteogenic differentiation and reduce adipogenic differentiation...
January 20, 2017: Cell Research
https://www.readbyqxmd.com/read/28105982/human-umbilical-cord-mesenchymal-stem-cells-inhibit-t-follicular-helper-cell-expansion-through-the-activation-of-inos-in-lupus-prone-b6-mrl-faslpr-mice
#12
Zhuoya Zhang, Ruihai Feng, Lingying Niu, Saisai Huang, Wei Deng, Bingyu Shi, Genhong Yao, Weiwei Chen, Xiaojun Tang, Xiang Gao, Xuebing Feng, Lingyun Sun
The aberrant generation or activation of T follicular helper (Tfh) cells contributes to the pathogenesis of systemic lupus erythematosus (SLE), yet little is known about how these cells are regulated. In this study, we demonstrated that the frequency of Tfh cells was increased in lupus-prone B6.MRL-<em>Fas<sup>lpr</sup></em> (B6.<em>lpr</em>) mice and positively correlated to plasma cell proportions and serum total IgG as well as anti-dsDNA antibody levels. Transplantation of human umbilical cord mesenchymal stem cells (UC-MSCs) ameliorated lupus symptoms in B6...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105979/human-dental-pulp-stem-cells-are-more-effective-than-human-bone-marrow-derived-mesenchymal-stem-cells-in-cerebral-ischemic-injury
#13
Miyeoun Song, Jae-Hyung Lee, Jinhyun Bae, Youngmin Bu, Eun-Cheol Kim
We compared the therapeutic effects and mechanism of transplanted human dental pulp stem cells (hDPSCs) and human bonemarrow-derived mesenchymal stem cells (hMSCs) in a stroke model of rats and an <i>in vitro</i> ischemic model. Both hDPSCs- and hMSCs- intravenously injected rats 24&#8201;h after middle cerebral artery occlusion showed improved functional recovery and reduced infarct volume versus control rats, but the hDPSCs group showed greater reduction in infarct volume than hMSCs. The positive area for the endothelial cell marker was greater in the lesion boundary areas in the hDPSCs group than with hMSCs...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105753/efficacy-and-safety-of-high-dose-chemotherapy-with-autologous-stem-cell-transplantation-in-senior-versus-younger-adults-with-newly-diagnosed-multiple-myeloma
#14
Li-Wen Huang, Wendi Bacon, Constance Cirrincione, Bercedis Peterson, Gwynn Long, David Rizzieri, Keith M Sullivan, Kelly Corbet, Mitchell Horwitz, Nelson Chao, Cristina Gasparetto, Sascha A Tuchman
We retrospectively studied 340 fit patients with multiple myeloma (MM) who underwent autologous stem cell transplantation (ASCT). We hypothesized that progression-free survival (PFS) of older patients was non-inferior to that of younger patients after ASCT. Our null hypothesis was that the PFS hazard ratio (HR) for a 5-year increase in age was ≥1.05; the alternative (non-inferiority) hypothesis was that the HR was ≤1. The observed HR was 0.94 (95% confidence interval [CI] 0.86-1.03); since the CI upper bound was <1...
January 19, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28105353/isolated-extramedullary-cutaneous-relapse-despite-concomitant-severe-graft-vs-host-disease-and-tissue-chimerism-analysis-in-a-patient-with-acute-lymphoblastic-leukemia-after-allogeneic-hematopoietic-stem-cell-transplantation-a-case-report
#15
Bulent Kantarcioglu, Huseyin Saffet Bekoz, Yeliz Duvarci Ogret, Asli Cakir, Demet Kivanc, Fatma Savran Oguz, Deniz Sargin
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a potentially curative treatment option for patients with acute lymphoblastic leukemia (ALL). The curative potential of allo-HSCT for ALL is, in part, due to the graft-vs.-leukemia (GVL) effect, in addition to the intensive conditioning chemo-radiotherapy. However, relapse remains the major cause of treatment failure following allo-HSCT for ALL. In the allo-HSCT setting, testing for genetic markers of hematopoietic chimerism has become a part of the routine diagnostic program...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28105211/diagnostic-and-therapeutic-approaches-to-multiple-myeloma-patients-real-world-data-from-representative-multicentre-treatment-surveys-in-germany-between-2008-and-2011
#16
Thomas M Moehler, Maximilian Merz, Lenka Kellermann, Hartmut Goldschmidt, Wolfgang Knauf
A survey was conducted to investigate the standard of care for multiple myeloma in Germany, in order to clarify the status of implementation of international and national treatment guidelines. In addition, the changes in disease management over time were investigated by comparison with surveys conducted in 2008 and 2009. The survey captured a representative sample of 478 myeloma patients with a mean age of 67.9 years across various stages of the disease. Diagnostic approaches, prognostic aspects and treatment decisions were evaluated based on a survey conducted in 2011 in 58 representative centres in Germany, including university and non-university hospitals and office-based haematologists...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105145/stem-cell-transplantation-during-cancer
#17
Xiao-Ying Zhang, Pei-Ying Zhang
Hematological malignancies account for approximately 9.5% of new cancers diagnosed annually. Lymphoma is the most frequent of all known categories of hematological malignancies. Worldwide, extensive research has focused on this type of cancer. However, new treatments are investigated in various clinical as well as pre-clinical studies. Hematopoietic stem cell transplantation (HSCT) is a recent and upcoming treatment strategy for patients with hematopoietic malignancies and inborn errors of metabolism or immune deficiencies...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105130/biological-characterization-of-sheep-kidney-derived-mesenchymal-stem-cells
#18
Meng Ji, Chunyu Bai, Lu Li, Ya'Nan Fan, Caiyun Ma, Xiangchen Li, Weijun Guan
The aim of the present study was to isolate, culture and characterize sheep metanephric mesenchymal stem cells (MMSCs). The MMSCs were isolated from the kidney tissue of six-week-old sheep fetus. This study investigated whether primary MMSCs could be grown for 26 passages and expressed Oct-4, which is involved in the self-renewal of undifferentiated pluripotent stem cells. The MMSCs also expressed the renal lineage marker gene PAX2, and mesenchymal cell marker genes CD44, FN1 and VIM. Expression of these genes was detected using immunofluorescence and reverse transcription-polymerase chain reaction assays...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104841/human-tissues-in-a-dish-the-research-and-ethical-implications-of-organoid-technology
#19
REVIEW
Annelien L Bredenoord, Hans Clevers, Juergen A Knoblich
The ability to generate human tissues in vitro from stem cells has raised enormous expectations among the biomedical research community, patients, and the general public. These organoids enable studies of normal development and disease and allow the testing of compounds directly on human tissue. Organoids hold the promise to influence the entire innovation cycle in biomedical research. They affect fields that have been subjects of intense ethical debate, ranging from animal experiments and the use of embryonic or fetal human tissues to precision medicine, organoid transplantation, and gene therapy...
January 20, 2017: Science
https://www.readbyqxmd.com/read/28104773/exosomes-generated-from-ipsc-derivatives-new-direction-for-stem-cell-therapy-in-human-heart-diseases
#20
REVIEW
Ji-Hye Jung, Xuebin Fu, Phillip C Yang
Cardiovascular disease (CVD) is the leading cause of death in modern society. The adult heart innately lacks the capacity to repair and regenerate the damaged myocardium from ischemic injury. Limited understanding of cardiac tissue repair process hampers the development of effective therapeutic solutions to treat CVD such as ischemic cardiomyopathy. In recent years, rapid emergence of induced pluripotent stem cells (iPSC) and iPSC-derived cardiomyocytes presents a valuable opportunity to replenish the functional cells to the heart...
January 20, 2017: Circulation Research
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