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https://www.readbyqxmd.com/read/28430877/the-accessible-chromatin-landscape-during-conversion-of-human-embryonic-stem-cells-to-trophoblast-by-bmp4
#1
Yajun Liu, Dewu Ding, Hongde Liu, Xiao Sun
Human embryonic stem cells (hESC) exposed to the growth factor bone morphogenic protein 4 (BMP4) in the absence of FGF2 have been used as a model to study the development of placental development. However, little is known about the cis-regulatory mechanisms underlying this important process. In this study, we used the public available chromatin accessibility data of hESC H1 cells and BMP4-induced trophoblast (TB)cell lines to identify DNase I hypersensitive sites (DHSs) in the two cell lines, as well as the transcription factor binding sites within the DHSs...
April 18, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28395342/stimulatory-effects-of-fibroblast-growth-factor-2-on-proliferation-and-migration-of-uterine-luminal-epithelial-cells-during-early-pregnancy%C3%A2-%C3%A2
#2
Whasun Lim, Hyocheol Bae, Fuller W Bazer, Gwonhwa Song
Fibroblast growth factor 2 (FGF2) is a mitogen that induces proliferation, differentiation, and migration of cells, as well as angiogenesis and carcinogenesis via autocrine or paracrine actions. Fibroblast growth factor 2 expression is abundant in porcine conceptuses and endometrium during the estrous cycle and peri-implantation period of pregnancy. However, its intracellular actions in uterine epithelial cells have not been reported. The results of this study indicated abundant expression of FGFR1 and FGFR2 predominantly in uterine luminal and glandular epithelia during early pregnancy and that their expression decreased with increasing parity of the sows...
January 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28385042/macrophage-response-to-allogeneic-adipose-tissue-derived-stromal-cells-in-hyaluronan-based-hydrogel-in-a-porcine-vocal-fold-injury-model
#3
Suzanne N King, Joo Hyun Woo, Sharon Tang, Susan L Thibeault
OBJECTIVE: Adipose tissue-derived stromal cells (ASC) embedded in hyaluronan scaffold is a beneficial prophylactic treatment for vocal fold (VF) surgical scar. Here, we investigated the macrophage inflammatory response to allogeneic ASC-constructs and identified changes in lamina propria extracellular matrix. METHOD: Pig ASC were characterized and transfected with GFP+ lentivirus. Thirty-three pigs underwent VF biopsies, and after 3 days, gel alone, gel+pASC, placebo, or pASC alone was injected into wound bed...
April 1, 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/28383663/transcriptomic-analysis-of-gene-cascades-involved-in-protein-kinase-a-and-c-signalling-in-the-kgn-line-of-human-ovarian-granulosa-tumour-cells1
#4
Patricia G Tremblay, Marc-André Sirard
The developmental competence of an oocyte is its capacity to resume maturation, undergo successful fertilization and reach the blastocyst stage. This competence is acquired through interaction with somatic cells of the follicle. Cumulus and granulosa cells support oocyte development while the oocyte influences follicular cell growth and differentiation. Studies suggest that follicle-stimulating hormone and luteinizing hormone play an essential role in oocyte competence acquisition through signalling initiated by protein kinases A and C (PKA and PKC) in granulosa cells...
April 5, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28380526/inhibition-of-chemokine-c-x-c-motif-receptor-four-cxcr4-at-the-fetal-maternal-interface-during-early-gestation-in-sheep-alterations-in-expression-of-chemokines-angiogenic-factors-and-their-receptors
#5
K E Quinn, S Z Prosser, K K Kane, R L Ashley
<p>Chemokine (C-X-C motif) ligand 12 (CXCL12) and its receptor, chemokine (C-X-C motif) receptor 4 (CXCR4), are involved in significant biological processes associated with early pregnancy including increasing trophoblast invasion and stimulating placental vascularization. To further elucidate functions of CXCL12-CXCR4 signaling during early gestation, our objective was to inhibit CXCR4 in vivo using a CXCR4 antagonist, AMD3100. We hypothesized that inhibition of CXCR4 would negatively affect chemokine and angiogenic factor regulation imperative for placental development in sheep...
March 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28370639/transcriptional-activation-of-hedgehog-pathway-components-in-aggressive-hemangioma
#6
Danielle S Wendling-Keim, Lynn Wanie, Rainer Grantzow, Roland Kappler
Infantile hemangioma is a vascular neoplasm and is one of the most common tumors diagnosed in young children. Although most hemangiomas are harmless and involute spontaneously, some show severe progression, leading to serious complications, such as high output cardiac failure, ulcerations, compression of the trachea or deprivation amblyopia, depending on their size and localization. However, the pathogenesis and cause of hemangioma are largely unknown to date. The goal of this study was to identify markers that could predict hemangiomas with aggressive growth and severe progression that would benefit from early intervention...
March 31, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28370166/mechanism-of-arsenite-toxicity-in-embryonic-stem-cells
#7
Naimisha Beeravolu, Christina McKee, G Rasul Chaudhry
Environmental arsenite exposure has been linked to cancer as well as other diseases, presenting an important and serious public health problem. Toxicity of inorganic arsenite (iAs) has been investigated using animal models and cell culture, yet its developmental effects are poorly understood. This study investigated the molecular mechanism of iAs toxicity to ascertain insight into development and differentiation processes using mouse embryonic stem cells (ESCs). The results showed that iAs exposure affected morphology and integrity of ESC colonies as well as inhibited cell growth in a concentration-dependent manner, excluding concentrations <1 μM iAs which stimulated ESC growth...
April 3, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28369825/cholinergic-and-dopaminergic-neuronal-differentiation-of-human-adipose-tissue-derived-mesenchymal-stem-cells
#8
H E Marei, A El-Gamal, A Althani, N Afifi, A Abd-Elmaksoud, A Farag, C Cenciarelli, Thomas Caceci, Anwarul Hasan
Mesenchymal stem cells (MSCs) are multipotent cells that can differentiate into various cell types such as cartilage, bone, and fat cells. Recent studies have shown that induction of MSCs in vitro by growth factors including epidermal growth factor (EGF) and fibroblast growth factor (FGF2) causes them to differentiate into neural like cells. These cultures also express ChAT, a cholinergic marker; and TH, a dopaminergic marker for neural cells. To establish a protocol with maximum differentiation potential, we examined MSCs under three experimental culture conditions using neural induction media containing FGF2, EGF, BMP-9, retinoic acid and heparin...
March 30, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28363499/expression-and-secretory-profile-of-buffalo-fetal-fibroblasts-and-wharton-s-jelly-feeder-layers
#9
Mehtab S Parmar, Smruti Ranjan Mishra, Anjali Somal, Sriti Pandey, G Sai Kumar, Mihir Sarkar, Vikash Chandra, G Taru Sharma
The present study examined the comparative expression and secretory profile of vital signaling molecules in buffalo fetal fibroblasts (BFF) and Wharton's jelly (BWJ) feeder layers at different passages. Both feeder layers were expanded up to 8th passage. Signaling molecules viz. bone morphogenetic protein 4 (BMP4), fibroblast growth factor 2 (FGF2), leukemia inhibitory factor (LIF) and transforming growth factor beta 1 (TGFB1) and pluripotency-associated transcriptional factors (POU5F1, SOX2, NANOG, KLF4, MYC and FOXD3) were immunolocalized in the both feeder types...
March 12, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28347232/expression-of-rna-binding-motif-10-is-associated-with-advanced-tumor-stage-and-malignant-behaviors-of-lung-adenocarcinoma-cancer-cells
#10
Guofang Guan, Ranwei Li, Wenfang Tang, Tiecheng Liu, Zhenzhong Su, Yan Wang, Jingjin Tan, Shan Jiang, Ke Wang
This study assessed RNA-binding motif 10 expression in lung adenocarcinoma tissues and examined the role and mechanism of RNA-binding motif 10 in the regulation of lung adenocarcinoma malignancy. Lung adenocarcinoma and corresponding adjacent non-tumor lung tissues from 41 patients were subjected to reverse transcription-polymerase chain reaction and Western blot assessment to detect RNA-binding motif 10 expression. Recombinant lentivirus carrying RNA-binding motif 10 complementary DNA was used to infect lung adenocarcinoma cell lines, A549 and H1299 cells...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28339537/stimulatory-effects-of-fibroblast-growth-factor-2-on-proliferation-and-migration-of-uterine-luminal-epithelial-cells-during-early-pregnancy%C3%A2-%C3%A2
#11
Whasun Lim, Hyocheol Bae, Fuller W Bazer, Gwonhwa Song
Fibroblast growth factor 2 (FGF2) is a mitogen that induces proliferation, differentiation, and migration of cells, as well as angiogenesis and carcinogenesis via autocrine or paracrine actions. Fibroblast growth factor 2 expression is abundant in porcine conceptuses and endometrium during the estrous cycle and peri-implantation period of pregnancy. However, its intracellular actions in uterine epithelial cells have not been reported. The results of this study indicated abundant expression of FGFR1 and FGFR2 predominantly in uterine luminal and glandular epithelia during early pregnancy and that their expression decreased with increasing parity of the sows...
December 20, 2016: Biology of Reproduction
https://www.readbyqxmd.com/read/28323137/defects-in-chondrocyte-maturation-and-secondary-ossification-in-mouse-knee-joint-epiphyses-due-to-snorc-deficiency
#12
J Heinonen, F-P Zhang, C Surmann-Schmitt, S Honkala, M Stock, M Poutanen, A-M Säämänen
OBJECTIVE: The role of Snorc, a novel cartilage specific transmembrane proteoglycan, was studied during skeletal development using two Snorc knockout mouse models. Hypothesizing that Snorc, like the other transmembrane proteoglycans, may be a coreceptor, we also studied its interaction with growth factors. METHODS: Skeletal development was studied in wild type (WT) and Snorc knockout mice during postnatal development by whole mount staining, X-ray imaging, histomorphometry, immunohistochemistry and qRT-PCR...
March 18, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28322621/bladder-regeneration-using-multiple-scaffolds-with-growth-factors-in-a-bladder
#13
Luc A J Roelofs, Paul K J D de Jonge, Egbert Oosterwijk, Dorien M Tiemessen, Barbara B Kortmann, Robert P E de Gier, Elly M M Versteeg, Willeke F Daamen, Toin H van Kuppevelt, Paul J Geutjes, Wout Feitz
INTRODUCTION: Tissue engineering may become an alternative to current bladder augmentation techniques. Large scaffolds are needed for clinically significant augmentation, but can result in fibrosis and graft shrinkage. The purpose of this study was to investigate the use of multiple scaffolds instead of one large scaffold, to enhance bladder tissue regeneration and bladder capacity. Secondly, acellular collagen, collagen-heparin, and collagen-heparin scaffolds with growth factors were used and the biological activity of the different scaffolds was compared in a large animal model...
March 21, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28317323/a-functional-snp-regulated-by-mir-196a-3p-in-the-3-utr-of-fgf2-is-associated-with-bone-mineral-density-in-the-chinese-population
#14
Dong-Li Zhu, Yan Guo, Yan Zhang, Shan-Shan Dong, Wen Xu, Ruo-Han Hao, Xiao-Feng Chen, Han Yan, Shui-Yun Yang, Tie-Lin Yang
Previous studies have identified FGF2 as a susceptibility gene for osteoporosis in Caucasians. Evaluating the genetic associations in different ethnicities is necessary. Moreover, elucidating the functional mechanism for the susceptibility loci is important to offer new targets for therapeutic studies. Here, we genotyped 10 SNPs in FGF2 and tested for associations with bone mineral density (BMD) in a discovery sample of 1,300 Chinese subjects. Nominally significant results were subjected to replication in another sample of 1,039 Chinese subjects...
March 19, 2017: Human Mutation
https://www.readbyqxmd.com/read/28302677/the-integrin-binding-defective-fgf2-mutants-potently-suppress-fgf2-signaling-and-angiogenesis
#15
Seiji Mori, Nobuaki Hatori, Naomasa Kawaguchi, Yoshinosuke Hamada, Tsung-Chieh Shih, Chun-Yi Wu, Kit S Lam, Nariaki Matsuura, Hirofumi Yamamoto, Yoko K Takada, Yoshikazu Takada
We recently found that integrin αvβ3 binds to FGF1, and that the integrin-binding defective FGF1 mutant (Arg-50 to Glu, R50E) is defective in signaling and antagonistic to FGF1 signaling. R50E suppressed angiogenesis and tumor growth, suggesting that R50E has potential as a therapeutic. However, FGF1 is unstable, and we had to express R50E in cancer cells for xenograft study, since injected R50E may rapidly disappear from circulation. We studied if we can develop antagonist of more stable FGF2. FGF2 is widely involved in important biological processes such as stem cell proliferation and angiogenesis...
March 16, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28299490/molecular-effects-of-fractional-ablative-erbium-yag-laser-treatment-with-multiple-stacked-pulses-on-standardized-human-three-dimensional-organotypic-skin-models
#16
Laurenz Schmitt, P M Amann, Y Marquardt, R Heise, K Czaja, P A Gerber, T Steiner, F Hölzle, Jens Malte Baron
The molecular changes in gene expression following ablative laser treatment of skin lesions, such as atrophic scars and UV-damaged skin, are not completely understood. A standardized in vitro model of human skin, to study the effects of laser treatment on human skin, has been recently developed. Therefore, the aim of the investigation was to examine morphological and molecular changes caused by fractional ablative erbium:YAG laser treatment on an in vitro full-thickness 3D standardized organotypic model of human skin...
March 15, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28291821/transcriptomic-profile-of-leg-muscle-during-early-growth-in-chicken
#17
Qian Xue, Genxi Zhang, Tingting Li, Jiaojiao Ling, Xiangqian Zhang, Jinyu Wang
The early growth pattern, especially the age of peak growth, of broilers affects the time to market and slaughter weight, which in turn affect the profitability of the poultry industry. However, the underlying mechanisms regulating chicken growth and development have rarely been studied. This study aimed to identify candidate genes involved in chicken growth and investigated the potential regulatory mechanisms of early growth in chicken. RNA sequencing was applied to compare the transcriptomes of chicken muscle tissues at three developmental stages during early growth...
2017: PloS One
https://www.readbyqxmd.com/read/28287262/synthetic-glycopolymers-for-highly-efficient-differentiation-of-embryonic-stem-cells-into-neurons-lipo-or-not
#18
Qi Liu, Zhonglin Lyu, You Yu, Zhen-Ao Zhao, Shijun Hu, Lin Yuan, Gaojian Chen, Hong Chen
To realize the potential application of embryonic stem cells (ESCs) for the treatment of neurodegenerative diseases, it is a prerequisite to develop an effective strategy for the neural differentiation of ESCs so as to obtain adequate amount of neurons. Considering the efficacy of glycosaminoglycans (GAG) and their disadvantages (e.g., structure heterogeneity and impurity), GAG-mimicking glycopolymers (designed polymers containing functional units similar to natural GAG) with or without phospholipid groups were synthesized in the present work and their ability to promote neural differentiation of mouse ESCs (mESCs) was investigated...
March 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28285568/cigarette-smoking-affects-uterine-receptivity-markers
#19
Gulcin Sahin Ersoy, Yuping Zhou, Hamdi İnan, Cuneyt E Taner, Emine Cosar, Hugh S Taylor
OBJECTIVE: Smoking negatively affects fertility and the rate of other endometrial diseases. To determine the effect of smoking on endometrial physiology, we evaluated 2 endometrial regulatory cytokines and receptivity markers, C-X-C motif chemokine ligand 12 (CXCL12) and fibroblast growth factor 2 (FGF2), both in vitro and in vivo. STUDY DESIGN: The human endometrial stromal cell line (HESC) and primary human endometrial stromal cells were treated with cigarette smoking extract (CSE) or with vehicle control...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28266625/inhibition-of-phd3-by-salidroside-promotes-neovascularization-through-cell-cell-communications-mediated-by-muscle-secreted-angiogenic-factors
#20
Jing Zhang, Vivi Kasim, Yu-Dan Xie, Can Huang, Julita Sisjayawan, Agnes Dwi Ariyanti, Xue-Song Yan, Xiao-Yan Wu, Cai-Ping Liu, Li Yang, Makoto Miyagishi, Shou-Rong Wu
Therapeutic angiogenesis has been considered as a potential strategy for treating peripheral artery diseases including hind-limb ischemia (HLI); however, no effective drug-based treatment is currently available. Here we showed that intramuscular administration of salidroside, an active compound of Chinese herb Rhodiola, could robustly enhance blood perfusion recovery by promoting neovascularization in HLI mice. We revealed that salidroside promoted skeletal muscle cell migration and paracrine function through inhibiting the transcriptional level of prolyl-hydroxylase domain 3 (PHD3) without affecting PHD1 and PHD2...
March 7, 2017: Scientific Reports
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