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Stem cell research

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https://www.readbyqxmd.com/read/28102896/impact-of-pre-transplant-depression-on-outcomes-of-allogeneic-and-autologous-hematopoietic-stem-cell-transplantation
#1
Areej El-Jawahri, Yi-Bin Chen, Ruta Brazauskas, Naya He, Stephanie J Lee, Jennifer M Knight, Navneet Majhail, David Buchbinder, Raquel M Schears, Baldeep M Wirk, William A Wood, Ibrahim Ahmed, Mahmoud Aljurf, Jeff Szer, Sara M Beattie, Minoo Battiwalla, Christopher Dandoy, Miguel-Angel Diaz, Anita D'Souza, Cesar O Freytes, James Gajewski, Usama Gergis, Shahrukh K Hashmi, Ann Jakubowski, Rammurti T Kamble, Tamila Kindwall-Keller, Hilard M Lazarus, Adriana K Malone, David I Marks, Kenneth Meehan, Bipin N Savani, Richard F Olsson, David Rizzieri, Amir Steinberg, Dawn Speckhart, David Szwajcer, Helene Schoemans, Sachiko Seo, Celalettin Ustun, Yoshiko Atsuta, Jignesh Dalal, Carmem Sales-Bonfim, Nandita Khera, Theresa Hahn, Wael Saber
BACKGROUND: To evaluate the impact of depression before autologous and allogeneic hematopoietic cell transplantation (HCT) on clinical outcomes posttransplantation. METHODS: We analyzed data from the Center for International Blood and Marrow Transplant Research to compare outcomes after autologous (n = 3786) or allogeneic (n = 7433) HCT for adult patients with hematologic malignancies with an existing diagnosis of pre-HCT depression requiring treatment versus those without pre-HCT depression...
January 19, 2017: Cancer
https://www.readbyqxmd.com/read/28102490/genome-engineering-of-stem-cell-organoids-for-disease-modeling
#2
REVIEW
Yingmin Sun, Qiurong Ding
Precision medicine emerges as a new approach that takes into account individual variability. Successful realization of precision medicine requires disease models that are able to incorporate personalized disease information and recapitulate disease development processes at the molecular, cellular and organ levels. With recent development in stem cell field, a variety of tissue organoids can be derived from patient specific pluripotent stem cells and adult stem cells. In combination with the state-of-the-art genome editing tools, organoids can be further engineered to mimic disease-relevant genetic and epigenetic status of a patient...
January 19, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28100096/targeting-therapy-resistant-cancer-stem-cells-by-hyperthermia
#3
A L Oei, L E M Vriend, P M Krawczyk, M R Horsman, N A P Franken, J Crezee
Eradication of all malignant cells is the ultimate but challenging goal of anti-cancer treatment; most traditional clinically-available approaches fail because there are cells in a tumor that either escape therapy or become therapy-resistant. A subpopulation of cancer cells, the cancer stem cells (CSCs), is considered to be of particular significance for tumor initiation, progression and metastasis. CSCs are considered in particular to be therapy-resistant and may drive disease recurrence, which positions CSCs in the focus of anti-cancer research, but successful CSC-targeting therapies are limited...
January 19, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28100040/induced-pluripotent-stem-cell-research-in-the-era-of-precision-medicine
#4
Takashi Hamazaki, Nihal El Rouby, Natalie C Fredette, Katherine E Santostefano, Naohiro Terada
Recent advances in DNA sequencing technologies are revealing how human genetic variations associate with differential health risks, disease susceptibilities and drug responses. Such information is now expected to help evaluate individual health risks, design personalized health plans and treat patients with precision. It is still challenging, however, to understand how such genetic variations cause the phenotypic alterations in pathobiologies and treatment response. Human induced pluripotent stem cell (iPSC) technologies are emerging as a promising strategy to fill the knowledge gaps between genetic association studies and underlying molecular mechanisms...
January 18, 2017: Stem Cells
https://www.readbyqxmd.com/read/28096400/defining-recovery-neurobiology-of-injured-spinal-cord-by-synthetic-matrix-assisted-hmsc-implantation
#5
Alexander E Ropper, Devang K Thakor, InBo Han, Dou Yu, Xiang Zeng, Jamie E Anderson, Zaid Aljuboori, Soo-Woo Kim, Hongjun Wang, Richard L Sidman, Ross D Zafonte, Yang D Teng
Mesenchymal stromal stem cells (MSCs) isolated from adult tissues offer tangible potential for regenerative medicine, given their feasibility for autologous transplantation. MSC research shows encouraging results in experimental stroke, amyotrophic lateral sclerosis, and neurotrauma models. However, further translational progress has been hampered by poor MSC graft survival, jeopardizing cellular and molecular bases for neural repair in vivo. We have devised an adult human bone marrow MSC (hMSC) delivery formula by investigating molecular events involving hMSCs incorporated in a uniquely designed poly(lactic-co-glycolic) acid scaffold, a clinically safe polymer, following inflammatory exposures in a dorsal root ganglion organotypic coculture system...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096318/bone-marrow-mesenchymal-stem-cells-inhibit-dendritic-cells-differentiation-and-maturation-by-microrna-23b
#6
Jingguo Wu, Chengbo Ji, Qingwei Jia, Feifei Cao, Yong Li, Xishan Zhang, Lanping Wang
BACKGROUND AND AIMS: Research on regulation and its mechanism of bone marrow mesenchymal stem cells (BMSCs) on dendritic cells (DCs) which is the initiating factor in immune response has applicable clinical value. Although BMSCs have a significant regulatory effect on the maturation of DCs, its molecular mechanism is still unclear. METHODS: Isolation and culture of BMSCs and DCs, they were co-cultured in different proportions. Flow cytometry was used to detect the expression of DCs markers (CD83, CD11c)...
January 17, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28095650/bone-tissue-engineering-in-oral-peri-implant-defects-in-preclinical-in-vivo-research-a-systematic-review-and-meta-analysis
#7
REVIEW
Siddharth Shanbhag, Nikolaos Pandis, Kamal Mustafa, Jens R Nyengaard, Andreas Stavropoulos
Regeneration and establishment of osseointegration within oral peri-implant bone defects remains a clinical challenge. Bone tissue engineering (BTE) is emerging as a promising alternative to autogenous and/or biomaterial-based bone grafting. The objective of this systematic review was to answer the focused question: in animal models, do cell-based BTE strategies enhance bone regeneration and/or implant osseointegration in experimental peri-implant defects, compared to grafting with autogenous bone or only biomaterial scaffolds? Electronic databases were searched for controlled animal studies reporting on peri-implant defects and implantation of mesenchymal stem cells (MSC) or other cells seeded on biomaterial scaffolds, following PRISMA guidelines...
January 17, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28095177/integrated-colony-imaging-analysis-and-selection-device-for-regenerative-medicine
#8
Edward Kwee, Edward E Herderick, Thomas Adams, James Dunn, Robert Germanowski, Frank Krakosh, Cynthia Boehm, James Monnich, Kimerly Powell, George Muschler
Stem and progenitor cells derived from human tissues are being developed as cell sources for cell-based assays and therapies. However, tissue-derived stem and progenitor cells are heterogeneous. Differences in observed clones of stem cells likely reflect important aspects of the underlying state of the source cells, as well as future potency for cell therapies. This paper describes a colony analysis and picking device that provides quantitative analysis of heterogeneous cell populations and precise tools for cell picking for research or biomanufacturing applications...
November 1, 2016: Journal of Laboratory Automation
https://www.readbyqxmd.com/read/28093458/single-cell-gene-expression-analysis-reveals-diversity-among-human-spermatogonia
#9
N Neuhaus, J Yoon, N Terwort, S Kliesch, J Seggewiss, A Huge, R Voss, S Schlatt, R V Grindberg, H R Schöler
STUDY QUESTION: Is the molecular profile of human spermatogonia homogeneous or heterogeneous when analysed at the single-cell level? SUMMARY ANSWER: Heterogeneous expression profiles may be a key characteristic of human spermatogonia, supporting the existence of a heterogeneous stem cell population. WHAT IS KNOWN ALREADY: Despite the fact that many studies have sought to identify specific markers for human spermatogonia, the molecular fingerprint of these cells remains hitherto unknown...
January 15, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28093371/sonographically-guided-knee-meniscus-injections-feasibility-techniques-and-validation
#10
Michael R Baria, Jacob L Sellon, Dan Lueders, Jay Smith
BACKGROUND: There is a growing interest in the use of biologic agents such as platelet-rich plasma and mesenchymal stem/stromal cells to treat musculoskeletal injuries, including meniscal tears. Although prior research has documented the role of diagnostic ultrasound to evaluate meniscal tears, sonographically guided (SG) techniques to specifically deliver therapeutic agents into the meniscus have not been described. OBJECTIVE: To describe and validate SG injection techniques for the body and posterior horn of the medial and lateral meniscus...
January 13, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28093366/strategy-for-constructing-vascularized-adipose-units-in-poly-l-glutamic-acid-hydrogel-porous-scaffold-through-inducing-in-situ-formation-of-ascs-spheroids
#11
Kunxi Zhang, Li Song, Jia Wang, Shifeng Yan, Guifei Li, Lei Cui, Jingbo Yin
: Vascularization is of great importance to adipose tissue regeneration. Here we introduced a paradigm that using scaffold to induce ASC spheroids, so to promote vascularized adipose tissue regeneration. Poly (L-glutamic acid) (PLGA) was activated by EDC, followed by being cross-linked by Adipic dihydrazide (ADH) to form a homogeneous hydrogel. Lyophilization was then carried out to create porous structure. The PLGA hydrogel scaffold possessed a significant swollen hydrophilic network to weaken cell-scaffold adhesion but drive ASCs to aggregate to form spheroids...
January 13, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28091967/balancing-ethical-pros-and-cons-of-stem-cell-derived-gametes
#12
Seppe Segers, Heidi Mertes, Guido de Wert, Wybo Dondorp, Guido Pennings
In this review we aim to provide an overview of the most important ethical pros and cons of stem cell derived gametes (SCD-gametes), as a contribution to the debate about reproductive tissue engineering. Derivation of gametes from stem cells holds promising applications both for research and for clinical use in assisted reproduction. We explore the ethical issues connected to gametes derived from embryonic stem cells (both patient specific and non-patient specific) as well as those related to gametes derived from induced pluripotent stem cells...
January 13, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28091566/efficient-generation-of-hpsc-derived-midbrain-dopaminergic-neurons-in-a-fully-defined-scalable-3d-biomaterial-platform
#13
Maroof M Adil, Gonçalo M C Rodrigues, Rishikesh U Kulkarni, Antara T Rao, Nicole E Chernavsky, Evan W Miller, David V Schaffer
Pluripotent stem cells (PSCs) have major potential as an unlimited source of functional cells for many biomedical applications; however, the development of cell manufacturing systems to enable this promise faces many challenges. For example, there have been major recent advances in the generation of midbrain dopaminergic (mDA) neurons from stem cells for Parkinson's Disease (PD) therapy; however, production of these cells typically involves undefined components and difficult to scale 2D culture formats. Here, we used a fully defined, 3D, thermoresponsive biomaterial platform to rapidly generate large numbers of action-potential firing mDA neurons after 25 days of differentiation (~40% tyrosine hydroxylase (TH) positive, maturing into 25% cells exhibiting mDA neuron-like spiking behavior)...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28090703/differentiation-of-islet-progenitors-regulated-by-nicotinamide-into-transcriptome-verified-%C3%AE-cells-that-ameliorate-diabetes
#14
Fang-Xu Jiang, Kevin Li, Michael Archer, Munish Mehta, Emma Jamieson, Adrian Charles, Jan E Dickinson, Masahito Matsumoto, Grant Morahan
Developmental stage-specific differentiation of stem or progenitor cells into safe and functional cells is of fundamental importance in regenerative medicine, including β-cell replacement. However, the differentiation of islet progenitor cells (IPCs) into insulin-secreting β cells remains elusive. Here, we report that the multi-functional molecule nicotinamide (NIC) is a specific differentiation regulator of mouse IPCs. The differentiated cells regulated by NIC exhibited many characteristics of adult β cells, including ameliorating preclinical diabetes and a highly comparable transcriptome profile...
January 16, 2017: Stem Cells
https://www.readbyqxmd.com/read/28090484/mesenchymal-stromal-cells-in-myeloid-malignancies
#15
REVIEW
Thomas Schroeder, Stefanie Geyh, Ulrich Germing, Rainer Haas
Myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML) are clonal myeloid disorders characterized by hematopoietic insufficiency. As MDS and AML are considered to originate from genetic and molecular defects of hematopoietic stem and progenitor cells (HSPC), the main focus of research in this field has focused on the characterization of these cells. Recently, the contribution of BM microenvironment to the pathogenesis of myeloid malignancies, in particular MDS and AML has gained more interest. This is based on a better understanding of its physiological role in the regulation of hematopoiesis...
December 2016: Blood Research
https://www.readbyqxmd.com/read/28089668/ebio-does-not-induce-cardiomyogenesis-in-human-pluripotent-stem-cells-but-modulates-cardiac-subtype-enrichment-by-lineage-selective-survival
#16
Monica Jara-Avaca, Henning Kempf, Michael Rückert, Diana Robles-Diaz, Annika Franke, Jeanne de la Roche, Martin Fischer, Daniela Malan, Philipp Sasse, Wladimir Solodenko, Gerald Dräger, Andreas Kirschning, Ulrich Martin, Robert Zweigerdt
Subtype-specific human cardiomyocytes (CMs) are valuable for basic and applied research. Induction of cardiomyogenesis and enrichment of nodal-like CMs was described for mouse pluripotent stem cells (mPSCs) in response to 1-ethyl-2-benzimidazolinone (EBIO), a chemical modulator of small-/intermediate-conductance Ca(2+)-activated potassium channels (SKs 1-4). Investigating EBIO in human pluripotent stem cells (PSCs), we have applied three independent differentiation protocols of low to high cardiomyogenic efficiency...
January 4, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28089099/clinical-characteristics-and-outcome-of-invasive-fungal-infections-in-pediatric-acute-myeloid-leukemia-patients-in-a-medical-center-in-taiwan
#17
Gu-Lung Lin, Hsiu-Hao Chang, Chun-Yi Lu, Chung-Ming Chen, Meng-Yao Lu, Ping-Ing Lee, Shiann-Tarng Jou, Yung-Li Yang, Li-Min Huang, Luan-Yin Chang
BACKGROUND: Invasive fungal infection (IFI) causes significant morbidity and mortality in patients with hematological malignancies, especially those with acute myeloid leukemia (AML), recurrent acute leukemia, high-risk acute lymphoblastic leukemia, and after allogeneic hematopoietic stem cell transplantation. The study aimed to investigate the clinical characteristics and outcome of IFIs in pediatric AML patients in a medical center in Taiwan. METHODS: We performed retrospective chart reviews...
December 19, 2016: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28088984/the-aging-hematopoietic-stem-cell-niche-phenotypic-and-functional-changes-and-mechanisms-that-contribute-to-hematopoietic-aging
#18
REVIEW
Sarah E Latchney, Laura M Calvi
The hematopoietic system has the remarkable ability to provide a lifelong supply of mature cells that make up the entire blood and immune system. However, similar to other adult stem cell niches, the hematopoietic system is vulnerable to the detrimental effects of aging. This is a substantial health concern as the trend for population aging continues to increase. Identifying mechanisms that underlie hematopoietic aging is vital for understanding hematopoietic-related diseases. In this review, we first discuss the cellular hierarchy of the hematopoietic system and the components that make up the surrounding hematopoietic niche...
January 2017: Seminars in Hematology
https://www.readbyqxmd.com/read/28088983/the-epigenetic-basis-of-hematopoietic-stem-cell-aging
#19
REVIEW
Ashley Kramer, Grant A Challen
Highly proliferative tissues such as the gut, skin, and bone marrow lose millions of cells each day to normal attrition and challenge from different biological adversities. To achieve a lifespan beyond the longevity of individual cell types, tissue-specific stem cells sustain these tissues throughout the life of a human. For example, the lifespan of erythrocytes is about 100 days and adults make about two million new erythrocytes every second. A small pool of hematopoietic stem cells (HSCs) in the bone marrow is responsible for the lifetime maintenance of these populations...
January 2017: Seminars in Hematology
https://www.readbyqxmd.com/read/28088893/intervention-for-cardiac-repair-a-clinical-perspective
#20
Hui Na Tan, Zhe Yuan Tay, Boon Seng Soh
Cardiovascular disease remains the leading cause of death worldwide. Damage to the heart resulting from cardiovascular disease leads to gradual loss of function and reduced quality of life. Cardiac injury is particularly debilitating, more so than injury to any other organ given our current inability to either generate new and functional cardiac tissue or to mimic the actions of the heart using external devices. Advances in the field of stem cells and genetics have paved the way for the development of a variety of novel therapies...
January 12, 2017: Current Stem Cell Research & Therapy
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