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Stem cell transplant harvest

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https://www.readbyqxmd.com/read/28531915/bone-marrow-stem-cells-anti-liver-fibrosis-potency-inhibition-of-hepatic-stellate-cells-activity-and-extracellular-matrix-deposition
#1
Ervina Julien Sitanggang, Radiana Dhewayani Antarianto, Sri Widia A Jusman, Jeanne Adiwinata Pawitan, Ahmad Aulia Jusuf
Transplantation of bone marrow derived stem cells (BMSCs) has been reported inhibits liver fibrosis. Several in vitro studies by co-culturing BMSCs and hepatic stellate cells (HSCs) indirectly or directly in 2D models showed inhibition of HSC as the key player in liver fibrosis. In this study, we investigated direct effect of BMSCs on HSCs by co-culturing BMSCs and HSCs in 3D model as it represents the liver microenvironment with intricate cell-cell and cell-matrix interactions. Primary isolated rat HSCs and BMSCs were directly co-cultured at 1:1 ratio with hanging drop method...
May 30, 2017: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28528807/comparison-of-amicus-and-cobe-spectra-for-allogenic-peripheral-blood-stem-cell-harvest-study-from-tertiary-care-centre-in-india
#2
Rasika Dhawan Setia, Satyam Arora, Anil Handoo, Tina Dadu, Dharma Choudhary, Sajeev Kumar Sharma, Gaurav Kharya, Vipin Khandelwal, Prerna Sachdeva, Divya Doval, Anamika Bakliwal, Meenu Kapoor, Shalu Bajaj, Virendra Bachchas, Praveen Singh
INTRODUCTION: Most common source of stem cell graft for both autologous and allogenic haematopoietic transplants are peripheral blood haematopoietic progenitor stem cells. Adequate collection of the CD34+ cells and safety of the allogenic donor during the leukapheresis are of prime importance to an apheresis physician. Our retrospective analysis is a comparison between of two platforms namely, COBE Spectra and Amicus, for CD34+ mononuclear cell collection. MATERIAL AND METHOD: The study included the data of GSCF (Granulocyte-Colony-Stimulating Factor) mobilized allogenic PBSC collections at our centre from January 2015 to June 2016...
April 24, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28518092/isolation-of-the-side-population-in-myc-induced-t-cell-acute-lymphoblastic-leukemia-in-zebrafish
#3
Margaret M Pruitt, Wilfredo Marin, Michael R Waarts, Jill L O de Jong
Heterogeneous cell populations, from either healthy or malignant tissues, may contain a population of cells characterized by a differential ability to efflux the DNA-binding dye Hoechst 33342. This "side population" of cells can be identified using flow cytometric methods after the Hoechst 33342 dye is excited by an ultraviolet (UV) laser. The side population of many cell types contains stem- or progenitor-like cells. However, not all cell types have an identifiable side population. Danio rerio, zebrafish, have a robust in vivo model of T-cell acute lymphoblastic leukemia (T-ALL), but whether these zebrafish T-ALLs have a side population is unknown...
May 4, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28511664/yields-and-chondrogenic-potential-of-primary-synovial-mesenchymal-stem-cells-are-comparable-between-rheumatoid-arthritis-and-osteoarthritis-patients
#4
Yuji Kohno, Mitsuru Mizuno, Nobutake Ozeki, Hisako Katano, Keiichiro Komori, Shizuka Fujii, Koji Otabe, Masafumi Horie, Hideyuki Koga, Kunikazu Tsuji, Mikio Matsumoto, Haruka Kaneko, Yuji Takazawa, Takeshi Muneta, Ichiro Sekiya
BACKGROUND: Mesenchymal stem cells derived from the synovial membrane (synovial MSCs) are a candidate cell source for regenerative medicine of cartilage and menisci due to their high chondrogenic ability. Regenerative medicine can be expected for RA patients with the inflammation well-controlled as well as OA patients and transplantation of synovial MSCs would also be a possible therapeutic treatment. Some properties of synovial MSCs vary dependent on the diseases patients have, and whether or not the pathological condition of RA affects the chondrogenesis of synovial MSCs remains controversial...
May 16, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28505596/engineered-hydrogels-increase-the-post-transplantation-survival-of-encapsulated-hesc-derived-midbrain-dopaminergic-neurons
#5
Maroof M Adil, Tandis Vazin, Badriprasad Ananthanarayanan, Gonçalo M C Rodrigues, Antara T Rao, Rishikesh U Kulkarni, Evan W Miller, Sanjay Kumar, David V Schaffer
Cell replacement therapies have broad biomedical potential; however, low cell survival and poor functional integration post-transplantation are major hurdles that hamper clinical benefit. For example, following striatal transplantation of midbrain dopaminergic (mDA) neurons for the treatment of Parkinson's disease (PD), only 1-5% of the neurons typically survive in preclinical models and in clinical trials. In general, resource-intensive generation and implantation of larger numbers of cells are used to compensate for the low post-transplantation cell-survival...
May 5, 2017: Biomaterials
https://www.readbyqxmd.com/read/28467735/skin-regeneration-with-self-assembled-peptide-hydrogels-conjugated-with-substance-p-in-a-diabetic-rat-model
#6
Ji Eun Kim, Jung Hwa Lee, Soo Hyun Kim, Youngmee Jung
The wound healing process requires enough blood to supply nutrients and various growth factors to the wound area. However, chronic wounds such as diabetic skin ulcers have limited regeneration due to a lack of cellular and molecular signals because of a deficient blood flow. Mesenchymal stem cells (MSCs) are known to provide various factors including growth factors, cytokines and angiogenic mediators. Although MSCs have great therapeutic potential, their transplantation has many obstacles including the time required to culture the cells, the invasiveness of the procedure and limited stem cell sources...
May 3, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28447889/bone-marrow-as-a-hematopoietic-stem-cell-source-for-gene-therapy-in-sickle-cell-disease-evidence-from-rhesus-and-scd-patients
#7
Naoya Uchida, Atsushi Fujita, Matthew M Hsieh, Aylin C Bonifacino, Allen E Krouse, Mark E Metzger, Robert E Donahue, John F Tisdale
Steady state bone marrow (BM) is the preferred hematopoietic stem cell (HSC) source for gene therapy in sickle cell disease (SCD) due to the recognized risk of vaso-occlusive crisis during granulocyte colony-stimulating factor mobilization. We previously established clinically relevant HSC gene transfer in the rhesus model following transplantation of mobilized peripheral blood (PB) CD34(+) cells transduced with lentiviral vectors. In this study, we examined steady state bone marrow (BM) in the rhesus competitive repopulation model and demonstrate similar gene marking in vitro and in vivo, as compared with mobilized PB CD34(+) cells...
April 17, 2017: Human Gene Therapy. Clinical Development
https://www.readbyqxmd.com/read/28445363/indomethacin-enhances-fat-graft-retention-by-up-regulating-adipogenic-genes-and-reducing-inflammation
#8
Weiqing Zhan, Shaun S Tan, Xiaolian Han, Jason A Palmer, Geraldine M Mitchell, Wayne A Morrison
BACKGROUND: Cell-assisted lipotransfer has been promisingly applied to restore soft-tissue defects in plastic surgery; however, the harvesting of stromal vascular fraction increases morbidity and poses potential safety hazards. The authors investigated whether adding indomethacin, an antiinflammatory proadipogenic drug, to the fat graft at the time of transplantation would enhance the final graft volume compared with cell-assisted lipotransfer. METHODS: In vitro, human adipose-derived stem cells were cultured in conditioned growth media supplemented with various doses of indomethacin to investigate adipogenesis and the expression of the adipogenic genes...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28406800/simple-limbal-epithelial-transplantation
#9
Virender S Sangwan, John A H Sharp
PURPOSE OF REVIEW: Simple limbal epithelial transplant (SLET) is a technique for addressing limbal stem cell deficiency. Limbal tissue from a donor eye, typically the patient's fellow healthy eye, is transplanted onto an amniotic membrane attached to the surface of the diseased eye. SLET was developed to address limitations of other techniques. Specifically, the technical difficulty of ex-vivo expansion of cells required in some techniques and the larger amount of valuable limbal tissue harvested in techniques not relying on ex-vivo expansion...
April 12, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28386069/tissue-harvesting-site-and-culture-medium-affect-attachment-growth-and-phenotype-of-ex-vivo-expanded-oral-mucosal-epithelial-cells
#10
Rakibul Islam, Jon Roger Eidet, Reza A Badian, Marit Lippestad, Edward Messelt, May Griffith, Darlene A Dartt, Tor Paaske Utheim
Transplantation of cultured oral mucosal epithelial cells (OMECs) is a promising treatment strategy for limbal stem cell deficiency. In order to improve the culture method, we investigated the effects of four culture media and tissue harvesting sites on explant attachment, growth, and phenotype of OMECs cultured from Sprague-Dawley rats. Neither choice of media or harvesting site impacted the ability of the explants to attach to the culture well. Dulbecco's modified Eagle's medium/Ham's F12 (DMEM) and Roswell Park Memorial Institute 1640 medium (RPMI) supported the largest cellular outgrowth...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28379122/recipient-adipose-derived-stem-cells-enhance-recipient-cell-engraftment-and-prolong-allotransplant-survival-in-a-miniature-swine-hind-limb-model
#11
Yur-Ren Kuo, Chien-Chang Chen, Yen-Chou Chen, Ching-Ming Chien
Donor mesenchymal stem cells could prolong vascularized composite allotransplant (VCA) survival in our previous study.However, recipient adipose tissue is easier to harvest than donor tissue for pre-conditioning modulation. Hence, this study investigated the efficacy of recipient autologous adipose-derived stem cells (rASCs) for VCA survival. The heterotopic hind-limb transplantation from female donor to male recipient was performed in out-bred miniature swine. Group-I (N=6) were untreated controls. Group-II (N=4) obtained rASC infusions (given on week 0, +1, +2, and +3)...
March 17, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28369013/wound-healing-from-dermal-grafts-containing-cd34-cells-is-comparable-to-split-thickness-skin-micrografts
#12
Kristo Nuutila, Mansher Singh, Carla Kruse, Elof Eriksson
BACKGROUND: Epidermal stem cells present in the skin appendages of the dermis might be crucial in wound healing. In this study we located these cells in the dermis and evaluated their contribution to full-thickness wound healing in a porcine model. METHODS: Four sequentially deeper 0.35mm thick skin grafts were harvested from the same donor site going down to 1.4 mm in depth (Layers 1-4). The layers were minced to 0.8 x 0.8 x 0.35 mm micrografts and transplanted (1:2) onto full-thickness porcine wounds...
March 31, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28367979/extracellular-vesicle-functionalized-decalcified-bone-matrix-scaffolds-with-enhanced-pro-angiogenic-and-pro-bone-regeneration-activities
#13
Hui Xie, Zhenxing Wang, Liming Zhang, Qian Lei, Aiqi Zhao, Hongxiang Wang, Qiubai Li, Yilin Cao, Wen Jie Zhang, Zhichao Chen
Vascularization is crucial for bone regeneration after the transplantation of tissue-engineered bone grafts in the clinical setting. Growing evidence suggests that mesenchymal stem cell (MSC)-derived extracellular vesicles (EVs) are potently pro-angiogenic both in vitro and in vivo. In the current study, we fabricated a novel EV-functionalized scaffold with enhanced pro-angiogenic and pro-bone regeneration activities by coating decalcified bone matrix (DBM) with MSC-derived EVs. EVs were harvested from rat bone marrow-derived MSCs and the pro-angiogenic potential of EVs was investigated in vitro...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28339301/cultivation-of-human-oral-mucosal-explants-on-contact-lenses
#14
Barbara Zsebik, László Ujlaky-Nagy, Gergely Losonczy, György Vereb, Lili Takács
Purpose/Aim: Autologous cultivated oral mucosal (OM) epithelial transplantation has been successfully used as corneal epithelial replacement in bilateral limbal stem cell deficiency. Recently, lotrafilcon A contact lens (CL) surface was described as a suitable carrier for cultured stem cells in corneal epithelial transplantation. Our aim was to establish explant cultures from human OM on CL carriers that are free of animal-derived materials and feeder cells. MATERIALS AND METHODS: Human cadaveric 2 mm OM explants were sutured onto CL surfaces and cultivated with fetal calf serum (FCS) or human serum (HS) supplemented culture medium without feeder cells...
March 24, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28325116/stem-cell-markers-describe-a-transition-from-somatic-to-pluripotent-cell-states-in-a-rat-model-of-endometriosis
#15
Essam Rashad Othman, Fatma Yassine Meligy, Ayat Abdel-Rahman Sayed, Mohamed Ahmed El-Mokhtar, Abeer Mohamed Refaiy
OBJECTIVE: To study Thy1 as a fibroblast marker, SSEA1 as a marker of intermediate pluripotency, and Oct4 as a marker of established pluripotency in rat model of endometriosis. DESIGN: In vivo animal study. MATERIALS AND METHODS: Endometriosis was induced in 20 albino female rats through autologous transplantation of one uterine horn to mesentery of intestine. Other 20 rats had their horn removed without transplantation (controls). Rats were sacrificed 4 weeks after induction surgery...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28321921/insights-into-cell-free-therapeutic-approach-role-of-stem-cell-soup-ernatant
#16
REVIEW
Shalini Raik, Ajay Kumar, Shalmoli Bhattacharyya
Current advances in medicine have revolutionized the field of regenerative medicine dramatically with newly evolved therapies for repair or replacement of degenerating or injured tissues. Stem cells can be harvested from different sources for clinical therapeutics which include fetal tissues, umbilical cord blood, embryos and adult tissues. Stem cells can be isolated and differentiated into desired lineages for tissue regeneration and cell replacement therapy. However, several loopholes need to be addressed properly before this can be extended for large scale therapeutic application...
March 21, 2017: Biotechnology and Applied Biochemistry
https://www.readbyqxmd.com/read/28296571/efficient-generation-of-functional-schwann-cells-from-adipose-derived-stem-cells-in-defined-conditions
#17
Songtao Xie, Fan Lu, Juntao Han, Ke Tao, Hongtao Wang, Alfred Simental, Dahai Hu, Hao Yang
Schwann cells (SCs) are hitherto regarded as the most promising candidates for viable cell-based therapy to peripheral nervous system (PNS) injuries or degenerative diseases. However, the extreme drawbacks of transplanting autologous SCs for clinical applications still represent a significant bottleneck in neural regenerative medicine, mainly owing to the need of sacrificing a functional nerve to generate autologous SCs and the nature of slow expansion of the SCs. Thus, it is of great importance to establish an alternative cell system for the generation of sufficient SCs...
May 3, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28289507/impact-of-t-cells-on-hematopoietic-stem-and-progenitor-cell-function-good-guys-or-bad-guys
#18
REVIEW
Sulima Geerman, Martijn A Nolte
When hematopoietic stem and progenitor cells (HSPC) are harvested for transplantation, either from the bone marrow or from mobilized blood, the graft contains a significant number of T cells. It is these T cells that are the major drivers of graft-vs-host disease (GvHD). The risk for GvHD can simply be reduced by the removal of these T cells from the graft. However, this is not always desirable, as this procedure also decreases the engraftment of the transplanted HSPCs and, if applicable, a graft-vs-tumor effect...
February 26, 2017: World Journal of Stem Cells
https://www.readbyqxmd.com/read/28282510/cxcr4-cd184-expression-on-stem-cell-harvest-and-cd34-cells-post-transplant
#19
Inas Asfour, Hanaa Afify, Shaza Elkourashy, Maryse Ayoub, Gihan Kamal, Mary Gamal, Ghada Elgohary
OBJECTIVES/BACKGROUND: CXCR4 is a receptor for stromal-derived factor-1 (SDF-1), a molecule that has a chemotactic activity for lymphocytes and is important in homing of hematopoietic stem cells to their adult marrow. We evaluated the CXCR4 (CD184) expression in the harvest cells and in the post-transplant bone marrow (BM) and its relation to engraftment, as determined by the consensus criteria and chimerism. METHODS: This is a prospective study which included 30 patients undergoing hematopoietic stem cell transplantation; 15 patients received autograft and 15 patients received allograft on dates between January 2012 and May 2014...
March 2, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28281429/single-centre-experience-of-allogeneic-haemopoietic-stem-cell-transplant-in-paediatric-patients-in-cape-town-south-africa
#20
A Van Eyssen, N Novitsky, P De Wit, T Schlaphoff, V Thomas, D Pillay, M Hendricks, A Davidson
BACKGROUND: Allogeneic haemopoietic stem cell transplant (Allo-HSCT) is a specialised and costly intervention, associated with significant morbidity and mortality. It is used to treat a broad range of paediatric conditions. South Africa (SA) is an upper middle-income country with limitations on healthcare spending. The role of paediatric Allo-HSCT in this setting is reviewed. OBJECTIVES: To review paediatric patients who underwent Allo-HSCT at the Groote Schuur Hospital/University of Cape Town Private Academic Hospital transplant unit in Cape Town, South Africa, and received post-transplant care at Red Cross War Memorial Children's Hospital, over the period January 2006 - December 2014 in respect of indications for the transplant, donor sources, conditioning regimens, treatment-related morbidity and overall survival (OS)...
February 27, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
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