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https://www.readbyqxmd.com/read/28817660/cited4-is-related-to-cardiogenic-induction-and-maintenance-of-proliferation-capacity-of-embryonic-stem-cell-derived-cardiomyocytes-during-in-vitro-cardiogenesis
#1
Junichiro Miake, Tomomi Notsu, Katsumi Higaki, Kyoko Hidaka, Takayuki Morisaki, Kazuhiro Yamamoto, Ichiro Hisatome
Cardiac progenitor cells have a limited proliferative capacity. The CREB-binding protein/p300-interacting transactivator, with the Glu/Asp-rich carboxy-terminal domain (Cited) gene family, regulates gene transcription. Increased expression of the Cited4 gene in an adult mouse is associated with exercise-induced cardiomyocyte hypertrophy and proliferation. However, the expression patterns and functional roles of the Cited4 gene during cardiogenesis are largely unknown. Therefore, in the present study, we investigated the expression patterns and functional roles of the Cited4 gene during in vitro cardiogenesis...
2017: PloS One
https://www.readbyqxmd.com/read/28814814/umbilical-cord-extracts-improve-diabetic-abnormalities-in-bone-marrow-derived-mesenchymal-stem-cells-and-increase-their-therapeutic-effects-on-diabetic-nephropathy
#2
Kanna Nagaishi, Yuka Mizue, Takako Chikenji, Miho Otani, Masako Nakano, Yusaku Saijo, Hikaru Tsuchida, Shinichi Ishioka, Akira Nishikawa, Tsuyoshi Saito, Mineko Fujimiya
Bone marrow-derived mesenchymal stem cells (BM-MSC) has been applied as the most valuable source of autologous cell transplantation for various diseases including diabetic complications. However, hyperglycemia may cause abnormalities in intrinsic BM-MSC which might lose sufficient therapeutic effects in diabetic patients. We demonstrated the functional abnormalities in BM-MSC derived from both type 1 and type 2 diabetes models in vitro, which resulted in loss of therapeutic effects in vivo in diabetic nephropathy (DN)...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28814482/lrig1-gastric-isthmal-progenitor-cells-restore-normal-gastric-lineage-cells-during-damage-recovery-in-adult-mouse-stomach
#3
Eunyoung Choi, Tyler L Lantz, Gregory Vlacich, Theresa M Keeley, Linda C Samuelson, Robert J Coffey, James R Goldenring, Anne E Powell
OBJECTIVE: Lrig1 is a marker of proliferative and quiescent stem cells in the skin and intestine. We examined whether Lrig1-expressing cells are long-lived gastric progenitors in gastric glands in the mouse stomach. We also investigated how the Lrig1-expressing progenitor cells contribute to the regeneration of normal gastric mucosa by lineage commitment to parietal cells after acute gastric injury in mice. DESIGN: We performed lineage labelling using Lrig1-CreERT2/+;R26R-YFP/+ (Lrig1/YFP) or R26R-LacZ/+ (Lrig1/LacZ) mice to examine whether the Lrig1-YFP-marked cells are gastric progenitor cells...
August 16, 2017: Gut
https://www.readbyqxmd.com/read/28813421/stromal-r-spondin-orchestrates-gastric-epithelial-stem-cells-and-gland-homeostasis
#4
Michael Sigal, Catriona Y Logan, Marta Kapalczynska, Hans-Joachim Mollenkopf, Hilmar Berger, Bertram Wiedenmann, Roeland Nusse, Manuel R Amieva, Thomas F Meyer
The constant regeneration of stomach epithelium is driven by long-lived stem cells, but the mechanism that regulates their turnover is not well understood. We have recently found that the gastric pathogen Helicobacter pylori can activate gastric stem cells and increase epithelial turnover, while Wnt signalling is known to be important for stem cell identity and epithelial regeneration in several tissues. Here we find that antral Wnt signalling, marked by the classic Wnt target gene Axin2, is limited to the base and lower isthmus of gastric glands, where the stem cells reside...
August 16, 2017: Nature
https://www.readbyqxmd.com/read/28813021/enhanced-cell-growth-of-adipocyte-derived-mesenchymal-stem-cells-using-chemically-defined-serum-free-media
#5
Myung-Suk Lee, Christine Youn, Jeong Hyun Kim, Byoung Jun Park, Jongchan Ahn, Sungyoul Hong, Young-Deug Kim, Young Kee Shin, Sang Gyu Park
The multipotency and anti-inflammatory effects of mesenchymal stem cells (MSCs) make them attractive for cell therapy in regenerative medicine. A large number of MSCs is required for efficient therapy owing to the low homing efficiency of MSCs to target sites. Furthermore, owing to limitations in obtaining sufficient amounts of MSCs, in vitro expansion of MSCs that preserves their differentiation and proliferative potential is essential. The animal factor included in culture media also limits clinical application...
August 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28812582/control-of-intestinal-stem-cell-function-and-proliferation-by-mitochondrial-pyruvate-metabolism
#6
John C Schell, Dona R Wisidagama, Claire Bensard, Helong Zhao, Peng Wei, Jason Tanner, Aimee Flores, Jeffrey Mohlman, Lise K Sorensen, Christian S Earl, Kristofor A Olson, Ren Miao, T Cameron Waller, Don Delker, Priyanka Kanth, Lei Jiang, Ralph J DeBerardinis, Mary P Bronner, Dean Y Li, James E Cox, Heather R Christofk, William E Lowry, Carl S Thummel, Jared Rutter
Most differentiated cells convert glucose to pyruvate in the cytosol through glycolysis, followed by pyruvate oxidation in the mitochondria. These processes are linked by the mitochondrial pyruvate carrier (MPC), which is required for efficient mitochondrial pyruvate uptake. In contrast, proliferative cells, including many cancer and stem cells, perform glycolysis robustly but limit fractional mitochondrial pyruvate oxidation. We sought to understand the role this transition from glycolysis to pyruvate oxidation plays in stem cell maintenance and differentiation...
August 14, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28812580/lactate-dehydrogenase-activity-drives-hair-follicle-stem-cell-activation
#7
Aimee Flores, John Schell, Abigail S Krall, David Jelinek, Matilde Miranda, Melina Grigorian, Daniel Braas, Andrew C White, Jessica L Zhou, Nicholas A Graham, Thomas Graeber, Pankaj Seth, Denis Evseenko, Hilary A Coller, Jared Rutter, Heather R Christofk, William E Lowry
Although normally dormant, hair follicle stem cells (HFSCs) quickly become activated to divide during a new hair cycle. The quiescence of HFSCs is known to be regulated by a number of intrinsic and extrinsic mechanisms. Here we provide several lines of evidence to demonstrate that HFSCs utilize glycolytic metabolism and produce significantly more lactate than other cells in the epidermis. Furthermore, lactate generation appears to be critical for the activation of HFSCs as deletion of lactate dehydrogenase (Ldha) prevented their activation...
August 14, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28811311/linking-the-environment-daf-7-tgf%C3%AE-signaling-and-lag-2-dsl-ligand-expression-in-the-germline-stem-cell-niche
#8
Olga Pekar, Maria C Ow, Kailyn Y Hui, Marcus B Noyes, Sarah E Hall, E Jane Albert Hubbard
The developmental accumulation of proliferative germ cells in the C. elegans hermaphrodite is sensitive to the organismal environment. Previously, we found that the TGFβ signaling pathway links the environment and proliferative germ cell accumulation. Neuronal DAF-7/TGFβ causes a DAF-1/TGFβR signaling cascade in the gonadal distal tip cell (DTC), the germline stem cell niche, where it negatively regulates a DAF-3 SMAD and DAF-5 Sno-Ski. LAG-2, a founding DSL ligand family member, is produced in the DTC and activates the GLP-1/Notch receptor on adjacent germ cells to maintain germline stem cell fate...
August 15, 2017: Development
https://www.readbyqxmd.com/read/28808337/microrna-214-modulates-neural-progenitor-cell-differentiation-by-targeting-quaking-during-cerebral-cortex-development
#9
Pengcheng Shu, Hongye Fu, Xiangyu Zhao, Chao Wu, Xiangbin Ruan, Yi Zeng, Wei Liu, Ming Wang, Lin Hou, Pan Chen, Bin Yin, Jiangang Yuan, Boqin Qiang, Xiaozhong Peng
The accurate generation of an appropriate number of different neuronal and glial subtypes is fundamental to normal brain functions and requires tightly orchestrated spatial and temporal developmental programmes to maintain the balance between the proliferation and the differentiation of neural progenitor cells. However, the molecular mechanism governing this process has not been fully elucidated. Here, we found that miR-214-3p was highly expressed in neural progenitor cells and dynamically regulated during neocortical development...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28808015/a-p53-dependent-response-limits-the-viability-of-mammalian-haploid-cells
#10
Teresa Olbrich, Cristina Mayor-Ruiz, Maria Vega-Sendino, Carmen Gomez, Sagrario Ortega, Sergio Ruiz, Oscar Fernandez-Capetillo
The recent development of haploid cell lines has facilitated forward genetic screenings in mammalian cells. These lines include near-haploid human cell lines isolated from a patient with chronic myelogenous leukemia (KBM7 and HAP1), as well as haploid embryonic stem cells derived from several organisms. In all cases, haploidy was shown to be an unstable state, so that cultures of mammalian haploid cells rapidly become enriched in diploids. Here we show that the observed diploidization is due to a proliferative disadvantage of haploid cells compared with diploid cells...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28801449/engraftment-and-in-vivo-proliferation-advantage-of-gene-corrected-mobilized-cd34-cells-from-fanconi-anemia-patients
#11
Paula Río, Susana Navarro, Guillermo Guenechea, Rebeca Sánchez-Domínguez, Maria Luisa Lamana, Rosa Yañez, Jose A Casado, Parinda A Mehta, Maria Roser Pujol, Jordi Surrallés, Sabine Charrier, Anne Galy, José C Segovia, Cristina Díaz de Heredia, Julián Sevilla, Juan Bueren
Previous Fanconi anemia (FA) gene therapy studies have failed to demonstrate engraftment of gene corrected hematopoietic stem and progenitor cells (HSPC) from FA patients, either after autologous transplantation or infusion into immunodeficient mice. In this study we demonstrate that a validated short transduction protocol of G-CSF plus plerixafor-mobilized CD34(+) cells from FA-A patients with a therapeutic FANCA-lentiviral vector corrects the phenotype of in vitro cultured hematopoietic progenitor cells. Transplantation of transduced FA CD34(+) cells into immunodeficient mice resulted in reproducible engraftment of myeloid, lymphoid and CD34(+) cells...
August 11, 2017: Blood
https://www.readbyqxmd.com/read/28798778/tumorigenic-and-differentiation-potentials-of-embryonic-stem-cells-depend-on-tgf%C3%AE-family-signaling-lessons-from-teratocarcinoma-cells-stimulated-to-differentiate-with-retinoic-acid
#12
Olga Gordeeva, Sergey Khaydukov
A significant challenge for the development of safe pluripotent stem cell-based therapies is the incomplete in vitro differentiation of the pluripotent stem cells and the presence of residual undifferentiated cells initiating teratoma development after transplantation in recipients. To understand the mechanisms of incomplete differentiation, a comparative study of retinoic acid-induced differentiation of mouse embryonic stem (ES) and teratocarcinoma (EC) cells was conducted. The present study identified differences in proliferative activity, differentiation, and tumorigenic potentials between ES and EC cells...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28793035/does-mesenchymal-stem-cell-improve-the-liver-regeneration-after-the-70-hepatectomy
#13
Ana Karina Soares Alves, Valéria Lanzoni, Rogério Aoki Fuziy, Rita Maria Aparecida Monteiro Moura Franco, Carlos Toshinori Maeda, Gaspar de Jesus Lopes, Marcelo Moura Linhares
Purpose: To evaluate the effects of mesenchymal stem cells on liver regeneration in rats following a 70% hepatectomy. Methods: Forty rats were subjected to 70% hepatectomy and then ~106 mesenchymal stem cells (test group), or saline solution (control group), were infused into their livers via the portal vein. Each treatment group was divided into early and late subgroups (euthanized 3 d and 5 d following the operation, respectively). Group comparisons of Albumin, aminotransaminases (AST, ALT), and Alcaline Phosphatase (AP) levels, proliferative index (ki-67+ straining), and mitotic cell counts were conducted...
July 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28782873/stable-morphological-physiological-and-neural-protein-expression-changes-in-rat-bone-marrow-mesenchymal-stem-cells-treated-with-electromagnetic-field-and-nitric-oxide
#14
Nazanin Haghighat, Parviz Abdolmaleki, Mehrdad Behmanesh, Mohammad Satari
As an external physical factor, electromagnetic field (EMF) may influence cellular processes and nitric oxide (NO) by serving as a secondary messenger molecule in intracellular signaling cascades. Effects of these factors were evaluated simultaneously on viability, morphology, and variation of calcium ion content, and neural protein marker expression in rat bone marrow mesenchymal stem cells (BMSCs). The mesenchymal stem cells were isolated from rat bone marrow and cultured. Deta-NO as a donor molecule of NO was added to cell culture medium after several passages...
August 7, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28771884/hmgb2-expression-is-associated-with-transition-from-a-quiescent-to-an-activated-state-of-adult-neural-stem-cells
#15
Ayaka Kimura, Taito Matsuda, Atsuhiko Sakai, Naoya Murao, Kinichi Nakashima
BACKGROUND: Although quiescent neural stem cells (NSCs) in the adult hippocampus proliferate in response to neurogenic stimuli and subsequently give rise to new neurons continuously throughout life, misregulation of NSCs in pathological conditions, including aging, leads to the impairment of learning and memory. High mobility group B family 1 (HMGB1) and HMGB2, HMG family proteins that function as transcriptional activators through the modulation of chromatin structure, have been assumed to play some role in the regulation of adult NSCs; however, their precise functions and even expression patterns in the adult hippocampus remain elusive...
August 2, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28767080/intrapancreatic-parenchymal-injection-of-cells-as-a-useful-tool-for-allowing-a-small-number-of-proliferative-cells-to-grow-in-vivo
#16
Masahiro Sato, Issei Saitoh, Tomoya Murakami, Naoko Kubota, Shingo Nakamura, Satoshi Watanabe, Emi Inada
In vivo inoculation of cells such as tumor cells and induced pluripotent stem (iPS)/embryonic stem (ES) cells into immunocompromised mice has been considered as a powerful technique to evaluate their potential to proliferate or differentiate into various cell types originating from three germ cell layers. Subcutaneous grafting and grafting under the kidney capsule have been widely used for this purpose, but there are some demerits such as the requirement of a large number of tumor cells for inoculation and frequent failure of tumorigenesis...
August 2, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28765836/muscle-stem-cell-and-physical-activity-what-point-is-the-debate-at
#17
Gabriele Ceccarelli, Laura Benedetti, Maria Luisa Arcari, Cecilia Carubbi, Daniela Galli
In the last 15 years, it emerged that the practice of regular physical activity reduces the risks of many diseases (cardiovascular diseases, diabetes, etc.) and it is fundamental in weight control and energy consuming to contrast obesity. Different groups proposed many molecular mechanisms as responsible for the positive effects of physical activity in healthy life. However, many points remain to be clarified. In this mini-review we reported the latest observations on the effects of physical exercise on healthy skeletal and cardiac muscle focusing on muscle stem cells...
2017: Open Medicine (Warsaw, Poland)
https://www.readbyqxmd.com/read/28760301/the-challenge-of-treating-myelodysplastic-syndromes-myeloproliferative-neoplasms
#18
REVIEW
Brittany Knick Ragon, Michael R Savona
Myelodysplastic syndromes/myeloproliferative neoplasms (MDS/MPN) comprise a spectrum of myeloid disorders with both dysplastic and proliferative features, arising from hematopoietic stem cells. MDS/MPN are neither MDS nor MPN but a distinct World Health Organization-defined subclassification of diseases that, by definition, do not arise from a pre-existing MDS or MPN, inherently creating diagnostic and therapeutic challenges. Appropriately recognizing and classifying MDS/MPN is paramount for appropriately formulating treatment strategies and accurate prognostication...
July 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28755485/opposing-effects-of-low-versus-high-concentrations-of-water-soluble-vitamins-dietary-ingredients-vitamin-c-and-niacin-on-colon-cancer-stem-cells-cscs
#19
Utsav Sen, Sudheer Shenoy P, Bipasha Bose
Colorectal cancer is one of the global causes of cancer deaths. Cancer stem cells (CSCs) inside the tumour niche responsible for metastasis and relapses, and hence need to be targeted for cancer therapeutics. Although dietary fibre and lifestyle changes have been recommended as measures for colorectal cancer prevention, no such recommendations are available for using water soluble vitamins as prophylaxis measure for colorectal cancers. High dose of Vitamin C has been proven to selectively kill colon cancer cells having BRAF and KRAS mutations by inducing oxidative stress...
July 29, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28751806/a-marine-bio-functional-lipid-fucoxanthinol-attenuates-human-colorectal-cancer-stem-like-cell-tumorigenicity-and-sphere-formation
#20
Masaru Terasaki, Hayato Maeda, Kazuo Miyashita, Takuji Tanaka, Shingo Miyamoto, Michihiro Mutoh
Fucoxanthinol (FuOH), an intestinal metabolite form of fucoxanthin (Fx) isolated from marine algae, is known to possess multiple health benefits, such as prevention of human cancer. However, there is little available information about the effects of FuOH on colorectal cancer stem cells (CCSCs) and their contribution to drug resistance, tumorigenesis and cancer recurrence. In the present study, we investigated the anti-proliferative effect of FuOH on two putative CCSCs, CD44(high)/EpCAM(high) cells and colonospheres (Csps) formed by HT-29 human colorectal cancer cells, and the suppressive effects of FuOH on the growth of xenografted tumor...
July 2017: Journal of Clinical Biochemistry and Nutrition
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