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https://www.readbyqxmd.com/read/29220664/locked-and-loaded-inflammation-training-prepares-skin-epithelial-stem-cells-for-trauma
#1
Valentina Proserpio, Salvatore Oliviero, Giacomo Donati
Memory of a trauma and how to cope with it is useful for acting rapidly in the event of a second traumatic incident. Recently, Naik et al. (2017) reported in Nature that skin epithelial stem cells have this ability by maintaining long-term chromatin features acquired during the first assault.
December 7, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/29215830/-study-of-migration-and-distribution-of-bone-marrow-cells-transplanted-animals-with-b16-melanoma
#2
A F Poveshchenko, A O Solovieva, K E Zubareva, D N Strunkin, O B Gricyk, O V Poveshchenko, A V Shurlygina, V I Konenkov
Purpose. Reveal features migration and distribution of syngeneic bone marrow cells (BMC) and subpopulations (MSC) after transplantation into the recipient carrier B16 melanoma bodies. Methods. We used mouse male and female C57BL/6 mice. Induction of Tumor Growth: B16 melanoma cells implanted subcutaneously into right hind paw of female C57BL/6 mice at a dose of 2.5 x 105 cells / mouse. migration study in vivo distribution and BMC and MSC was performed using genetic markers - Y-chromosome specific sequence line male C57Bl/6 syngeneic intravenous transplantation in females using the polymerase chain reaction (PCR) in real time on Authorized Termal Cycler - Light Cycler 480 II / 96 (Roche)...
April 2017: Patologicheskaia Fiziologiia i èksperimental'naia Terapiia
https://www.readbyqxmd.com/read/29215059/protective-effect-of-mesenchymal-stem-cells-on-the-pressure-ulcer-formation-by-the-regulation-of-oxidative-and-endoplasmic-reticulum-stress
#3
Sei-Ichiro Motegi, Akiko Sekiguchi, Akihiko Uchiyama, Akihito Uehara, Chisako Fujiwara, Sahori Yamazaki, Buddhini Perera, Hideharu Nakamura, Sachiko Ogino, Yoko Yokoyama, Ryoko Akai, Takao Iwawaki, Osamu Ishikawa
Cutaneous ischemia-reperfusion (I/R) injury is associated with the early pathogenesis of cutaneous pressure ulcers (PUs). The objective of this study was to investigate the effect of mesenchymal stem cells (MSCs) injection on the formation of PUs after I/R injury and determine the underlying mechanisms. We found that the subcutaneous injection of MSCs into areas of I/R injured skin significantly suppressed the formation of PUs. I/R-induced vascular damage, hypoxia, oxidative DNA damage, and apoptosis were decreased by MSCs injection...
December 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29212797/in-vitro-and-in-vivo-differentiation-of-induced-pluripotent-stem-cells-generated-from-urine-derived-cells-into-cardiomyocytes
#4
Yu-Feng Jiang, Min Chen, Nan-Nan Zhang, Hua-Jia Yang, Qing Rui, Ya-Feng Zhou
Breakthrough advances in stem cell research made it possible for generation of human cardiomyocytes from cells derived from various sources, including skin biopsy. However, it is attractive to build up a negligibly invasive way to create induced pluripotent stem (iPS) cells. In this study, we created iPS cells from human urine-derived epithelial cells by gene transduction using lentiviral vectors in a totally noninvasive manner. After that, we induced the differentiation of iPS cells into functional cardiomyocytes both in vitro and in vivo Action potentials were recorded in putative cardiomyocytes and spontaneous beating cells were observed...
December 6, 2017: Biology Open
https://www.readbyqxmd.com/read/29212384/articular-and-subcutaneous-adipose-tissues-of-rheumatoid-arthritis-patients-represent-equal-sources-of-immunoregulatory-mesenchymal-stem-cells
#5
Urszula Skalska, Ewa Kuca-Warnawin, Anna Kornatka, Iwona Janicka, Urszula Musiałowicz, Tomasz Burakowski, Ewa Kontny
Adipose-derived mesenchymal stem cells (ASCs) have immunoregulatory properties, but their activity is dependent on signals provided by the local microenvironment. It is likely that highly inflammatory milieu of rheumatoid joint affects ASCs activity. To test this hypothesis, the function of rheumatoid ASCs derived from articular adipose tissue (AT-ASCs) and ASCs derived from subcutaneous adipose tissue (Sc-ASCs) has been analysed. Articular adipose tissue (infrapatellar fat pad) and subcutaneous adipose tissue (from the site of skin closure with sutures) were obtained from rheumatoid arthritis (RA) patients undergoing total knee joint replacement surgery...
December 6, 2017: Autoimmunity
https://www.readbyqxmd.com/read/29207049/coordinated-microrna-mrna-expression-profiles-reveal-a-putative-mechanism-of-corneal-epithelial-cell-transdifferentiation-from-skin-epidermal-stem-cells
#6
Yanjie Guo, Xiya Ma, Weini Wu, Mingyan Shi, Junlong Ma, Yaping Zhang, Erkang Zhao, Xueyi Yang
Skin epidermal stem cells (SESCs), which share a single origin with corneal epithelial cells (CECs), are considered to be one of the most ideal seed cells for the construction of tissue engineered corneas. However, the mechanism underlying the transdifferentiation of SESCs to CECs has not been fully elucidated. In the present study, to identify critical microRNAs (miRNAs/miRs) and genes that regulate the transdifferentiation of SESCs to CECs, SESCs and CECs were collected from sheep and used for small RNA sequencing and mRNA microarray analyses...
December 1, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29204825/stem-cell-microenvironments-and-beyond
#7
Alexander Birbrair
Endogenous stem cells are indispensable to keep tissue homeostasis due to their unique ability to generate more specialized cell types in an organized way depending on the body needs. Precise control over stem cell differentiation is essential for organogenesis and tissue homeostasis. Stem cells reside in specialized microenvironments, also called niches, which maintain them in an undifferentiated and self-renewing state. The cellular and molecular mechanisms of stem cell maintenance are key to the regulation of homeostasis and likely contribute to several disorders when altered during adulthood...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29203437/effect-of-alcohol-based-hand-rub-on-hand-microbiome-and-hand-skin-health-in-hospitalized-adult-stem-cell-transplant-patients-a-pilot-study
#8
Pranab K Mukherjee, Jyotsna Chandra, Mauricio Retuerto, Karen A Arters, Mary C Consolo, A'ja Patterson, Saralee Bajaksouzian, James W Arbogast, Todd J Cartner, Michael R Jacobs, Mahmoud A Ghannoum, Robert A Salata
No abstract text is available yet for this article.
December 1, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/29203359/bone-marrow-derived-stem-cells-migrate-into-intra-epidermal-skin-defects-of-a-desmoglein-3-knockout-mouse-model-but-preserve-their-mesodermal-differentiation
#9
Christian Hünefeld, Markus Mezger, Eva Müller-Hermelink, Martin Schaller, Ingo Müller, Masayuki Amagai, Rupert Handgretinger, Martin Röcken
Inherited forms of Epidermolysis bullosa (EB) are blistering diseases of the skin and mucosa resulting from various gene mutations. Transplantation of bone marrow (BM)-derived stem cells might be a promising systemic treatment for severe dystrophic or junctional EB, but many key questions remain unresolved. Two open questions of clinical interest are whether systemically transplanted BM-derived stem cells of mesodermal origin might be able to transdifferentiate into keratinocytes with an ectodermal phenotype and whether these cells are also capable of repairing a specific intra-epidermal gene defect...
December 1, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29201212/anti-aging-effect-of-fullerenol-on-skin-aging-through-derived-stem-cells-in-a-mouse-model
#10
Wei Li, Ning Li, Bing Sui, Daping Yang
Fullerenol is similar to graphite in terms of structure. In the present study, the anti-aging effect of fullerenol on skin through derived stem cells in a mouse model was assessed and the potential mechanism of fullerenol was investigated. The anti-aging effect of fullerenol effectively inhibited the retention rate of transplanted adipose-derived stem cells and increased the thickness of the dermal portion of skin and collagen ratio in mice. The effect of fullerenol on the proliferation of stem cells was observed...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29201190/pigment-epithelium-derived-factor-short-peptides-facilitate-full-thickness-cutaneous-wound-healing-by-promoting-epithelial-basal-cell-and-hair-follicle-stem-cell-proliferation
#11
Shawn H Tsai, Li-Pen Tsao, Shih-Hsin Chang, Tsung-Chuan Ho, Kwang-Yi Tung, Ai-Ching Wu, Yeou-Ping Tsao
A previous study by our group showed that a 44-amino-acid fragment of pigment epithelium-derived factor (PEDF) facilitated corneal epithelial wound healing. In the present study this fragment was shortened to obtain peptides of 18, 20 and 29 amino acids in length, and their promoting effects on the healing of full-thickness skin wounds were assessed. Peptides were delivered periodically by topical application to punch wounds of mice. The wound healing speed was evaluated by measuring the reduction of wound areas at 4 and 7 days after injury...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29200805/induced-pluripotent-stem-cell-derived-cardiomyocytes-a-platform-for-testing-for-drug-cardiotoxicity
#12
Daniel Bernstein
Off-target cardiotoxicity has been a significant impediment to the development of new drugs. Traditional platforms for screening for cardiotoxicity are both overly sensitive and limited in their ability to predict cardiotoxicity that is often only uncovered after years of clinical use. A major impediment has been the lack of a human cardiomyocyte cell line. The recent discovery that adult somatic human cells (white blood cells or skin fibroblasts) can be reprogrammed into pluripotent stem cells (hiPSCs) and then differentiated into beating cardiomyocytes (hiPSC-CMs) provides an exciting new platform for drug cardiotoxicity and efficacy testing...
September 2017: Progress in Pediatric Cardiology
https://www.readbyqxmd.com/read/29200755/current-and-future-perspectives-of-stem-cell-therapy-in-dermatology
#13
REVIEW
Christine M Prodinger, Julia Reichelt, Johann W Bauer, Martin Laimer
Stem cells are undifferentiated cells capable of generating, sustaining, and replacing terminally differentiated cells and tissues. They can be isolated from embryonic as well as almost all adult tissues including skin, but are also generated through genetic reprogramming of differentiated cells. Preclinical and clinical research has recently tremendously improved stem cell therapy, being a promising treatment option for various diseases in which current medical therapies fail to cure, prevent progression or relieve symptoms...
December 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/29199946/stimulation-of-hair-follicle-stem-cell-proliferation-through-an-il-1-dependent-activation-of-%C3%AE-%C3%AE-t-cells
#14
Pedro Lee, Rupali Gund, Abhik Dutta, Neha Pincha, Isha Rana, Subhasri Ghosh, Deborah Witherden, Eve Kandyba, Amanda MacLeod, Krzysztof Kobielak, Wendy L Havran, Colin Jamora
The cutaneous wound-healing program is a product of a complex interplay among diverse cell types within the skin. One fundamental process that is mediated by these reciprocal interactions is the mobilization of local stem cell pools to promote tissue regeneration and repair. Using the ablation of epidermal caspase-8 as a model of wound healing in Mus musculus, we analyzed the signaling components responsible for epithelial stem cell proliferation. We found that IL-1α and IL-7 secreted from keratinocytes work in tandem to expand the activated population of resident epidermal γδT-cells...
December 4, 2017: ELife
https://www.readbyqxmd.com/read/29199284/stem-cells-regenerating-the-skin-of-a-young-patient
#15
Kim Baumann
No abstract text is available yet for this article.
December 4, 2017: Nature Reviews. Genetics
https://www.readbyqxmd.com/read/29198704/ischemic-flap-survival-improvement-by-composition-selective-fat-grafting-with-novel-adipose-tissue-derived-product-stromal-vascular-fraction-gel
#16
Pan Zhang, Jingwei Feng, Yunjun Liao, Junrong Cai, Tao Zhou, Mingliang Sun, Jianhua Gao, Kai Gao
BACKGROUND: Flap necrosis due to insufficient blood supply is a common postoperative complication in random pattern flaps. Stem cell therapies have emerged as promising biologics for tissue ischemia. A novel fat derived product, stromal vascular fraction gel (SVF-gel), can be prepared with lipoaspirate through simple mechanical processing, removing only the lipid content. SVF-gel enriches adipose-derived stem cells and potentially beneficial for flap necrosis. METHODS: Nude mice ischemic flaps were treated with human SVF-gel, stromal vascular fraction (SVF) cell suspension or saline (n = 10)...
November 30, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29193756/investigating-the-cardiac-pathology-of-sco2-mediated-hypertrophic-cardiomyopathy-using-patients-induced-pluripotent-stem-cell-derived-cardiomyocytes
#17
Tova Hallas, Binyamin Eisen, Yuval Shemer, Ronen Ben Jehuda, Lucy N Mekies, Shulamit Naor, Revital Schick, Sivan Eliyahu, Irina Reiter, Eugene Vlodavsky, Yeshayahu Shai Katz, Katrin Õunap, Avraham Lorber, Richard Rodenburg, Hanna Mandel, Mihaela Gherghiceanu, Ofer Binah
Mutations in SCO2 are among the most common causes of COX deficiency, resulting in reduced mitochondrial oxidative ATP production capacity, often leading to hypertrophic cardiomyopathy (HCM). To date, none of the recent pertaining reports provide deep understanding of the SCO2 disease pathophysiology. To investigate the cardiac pathology of the disease, we were the first to generate induced pluripotent stem cell (iPSC)-derived cardiomyocytes (iPSC-CMs) from SCO2-mutated patients. For iPSC generation, we reprogrammed skin fibroblasts from two SCO2 patients and healthy controls...
November 28, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29190822/the-tumor-suppressor-phosphatase-pp2a-b56%C3%AE-regulates-stemness-and-promotes-the-initiation-of-malignancies-in-a-novel-murine-model
#18
Mahnaz Janghorban, Ellen M Langer, Xiaoyan Wang, Derek Zachman, Colin J Daniel, Jody Hooper, William H Fleming, Anupriya Agarwal, Rosalie C Sears
Protein phosphatase 2A (PP2A) is a ubiquitously expressed Serine-Threonine phosphatase mediating 30-50% of protein phosphatase activity. PP2A functions as a heterotrimeric complex, with the B subunits directing target specificity to regulate the activity of many key pathways that control cellular phenotypes. PP2A-B56α has been shown to play a tumor suppressor role and to negatively control c-MYC stability and activity. Loss of B56α promotes cellular transformation, likely at least in part through its regulation of c-MYC...
2017: PloS One
https://www.readbyqxmd.com/read/29190496/rerouting-mesenchymal-stem-cell-trajectory-towards-epithelial-lineage-by-engineering-cellular-niche
#19
REVIEW
Ananya Barui, Farhan Chowdhury, Abhay Pandit, Pallab Datta
Mesenchymal stromal/stem cells (MSCs) are multipotent cells that offer a promising outcome in the field of regenerative medicine. MSCs are present in various tissues including bone marrow, fat, skin, and placenta. The interest in clinical application of these mesoderm-derived MSCs is primarily fueled by their high self-renewal capacity and multipotency. Although, early studies indicated limited differentiation capacity of MSCs into same cell lineages from which they were isolated, subsequent investigations showed differentiation potential into other cell types of mesoderm origin including osteoblasts, adipocytes, fibroblasts, cardiomyocytes, and chondrocytes...
November 21, 2017: Biomaterials
https://www.readbyqxmd.com/read/29189513/successful-nonmyeloablative-allogeneic-stem-cell-transplant-in-a-child-with-emberger-syndrome-and-gata2-mutation
#20
Neha Rastogi, Roshini S Abraham, Ritu Chadha, Dhwanee Thakkar, Shruti Kohli, Sagar Nivargi, Satya Prakash Yadav
Emberger syndrome with underlying guanine-adenine-thymine-adenine 2 (GATA2) mutation is a rare disorder and very few successful nonmyeloablative allogeneic hematopoietic stem cell transplants (HSCTs) have been reported. We report a case of Emberger syndrome with GATA2 mutation in a 9-year-old girl who presented with congenital sensorineural deafness, warts, lymphedema, and Myelodysplastic syndrome. Her sister had died of a similar illness. She underwent a nonmyeloablative matched related donor peripheral blood HSCT with rabbit antithymoglobulin (5 mg/kg), fludarabine (160 mg/m), cyclophophamide (29 mg/kg), and total body irradiation (2 Gray)...
November 17, 2017: Journal of Pediatric Hematology/oncology
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