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Trophoblast stem cell

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https://www.readbyqxmd.com/read/27900108/high-dose-chemotherapy-with-autologous-peripheral-blood-stem-cell-transplantation-for-choriocarcinoma-a-case-report-and-literature-review
#1
Eiko Yamamoto, Kaoru Niimi, Kayo Fujikake, Tetsuya Nishida, Makoto Murata, Ayako Mitsuma, Yuichi Ando, Fumitaka Kikkawa
Choriocarcinoma is a malignant gestational trophoblastic neoplasia (GTN) and one of the curable types of gynecological cancer. However, 10% of choriocarcinoma patients have a poor prognosis, particularly when they have metastasis, apart from pulmonary metastasis, or do not go into remission by the second chemotherapeutic regimen. We herein present the case of a 36-year-old patient who had choriocarcinoma with metastases to the lungs, liver and kidneys. The 5th and 6th regimens with cisplatin for choriocarcinoma failed and the patient developed brain metastases...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27887617/increased-expression-of-trop2-in-airway-basal-cells-potentially-contributes-to-airway-remodeling-in-chronic-obstructive-pulmonary-disease
#2
Qixiao Liu, Haijun Li, Qin Wang, Yuke Zhang, Wei Wang, Shuang Dou, Wei Xiao
BACKGROUND: The airway epithelium of chronic obstructive pulmonary disease (COPD) patients undergoes aberrant repair and remodeling after repetitive injury following exposure to environmental factors. Abnormal airway regeneration observed in COPD is thought to originate in the stem/progenitor cells of the airway epithelium, the basal cells (BCs). However, the molecular mechanisms underlying these changes remain unknown. Here, trophoblast cell surface antigen 2 (TROP2), a protein implicated in the regulation of stem cell activity, was examined in lung tissue samples from COPD patients...
November 25, 2016: Respiratory Research
https://www.readbyqxmd.com/read/27871274/chemotherapy-curable-malignancies-and-cancer-stem-cells-a-biological-review-and-hypothesis
#3
Philip Savage
BACKGROUND: Cytotoxic chemotherapy brings routine cures to only a small select group of metastatic malignancies comprising gestational trophoblast tumours, germ cell tumours, acute leukemia, Hodgkin's disease, high grade lymphomas and some of the rare childhood malignancies. We have previously postulated that the extreme sensitivity to chemotherapy for these malignancies is linked to the on-going high levels of apoptotic sensitivity that is naturally linked with the unique genetic events of nuclear fusion, meiosis, VDJ recombination, somatic hypermutation, and gastrulation that have occurred within the cells of origin of these malignancies...
November 21, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27867161/departure-from-optimal-o2-level-for-mouse-trophoblast-stem-cell-proliferation-and-potency-leads-to-most-rapid-ampk-activation
#4
Yu Yang, Zhongliang Jiang, Alan Bolnick, Jing Dai, Elizabeth E Puscheck, Daniel A Rappolee
Previous studies showed that cultured mouse trophoblast stem cells (mTSCs) have the most rapid proliferation, normal maintenance of stemness/potency, the least spontaneous differentiation, and the lowest level of stress-activated protein kinase (SAPK) when incubated at 2% O2 rather than at the traditional 20% O2 or hypoxic (0.5% and 0% O2) conditions. Switching from 2% O2 induced fast SAPK responses. Here we tested the dose response of AMP-activated protein kinase (AMPK) in its active form (pAMPK Thr172P) at O2 levels from 20-0%, and also tested whether pAMPK levels show similar rapid changes when mTSC cultures were switched from the optimal 2% O2 to other O2 conditions...
November 18, 2016: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/27849611/notch1-controls-development-of-the-extravillous-trophoblast-lineage-in-the-human-placenta
#5
Sandra Haider, Gudrun Meinhardt, Leila Saleh, Christian Fiala, Jürgen Pollheimer, Martin Knöfler
Development of the human placenta and its different epithelial trophoblasts is crucial for a successful pregnancy. Besides fusing into a multinuclear syncytium, the exchange surface between mother and fetus, progenitors develop into extravillous trophoblasts invading the maternal uterus and its spiral arteries. Migration into these vessels promotes remodelling and, as a consequence, adaption of blood flow to the fetal-placental unit. Defects in remodelling and trophoblast differentiation are associated with severe gestational diseases, such as preeclampsia...
November 14, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27821757/nicotinamide-benefits-both-mothers-and-pups-in-two-contrasting-mouse-models-of-preeclampsia
#6
Feng Li, Tomofumi Fushima, Gen Oyanagi, H W Davin Townley-Tilson, Emiko Sato, Hironobu Nakada, Yuji Oe, John R Hagaman, Jennifer Wilder, Manyu Li, Akiyo Sekimoto, Daisuke Saigusa, Hiroshi Sato, Sadayoshi Ito, J Charles Jennette, Nobuyo Maeda, S Ananth Karumanchi, Oliver Smithies, Nobuyuki Takahashi
Preeclampsia (PE) complicates ∼5% of human pregnancies and is one of the leading causes of pregnancy-related maternal deaths. The only definitive treatment, induced delivery, invariably results in prematurity, and in severe early-onset cases may lead to fetal death. Many currently available antihypertensive drugs are teratogenic and therefore precluded from use. Nonteratogenic antihypertensives help control maternal blood pressure in PE, but results in preventing preterm delivery and correcting fetal growth restriction (FGR) that also occurs in PE have been disappointing...
November 7, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27807143/hif-kdm3a-mmp12-regulatory-circuit-ensures-trophoblast-plasticity-and-placental-adaptations-to-hypoxia
#7
Damayanti Chakraborty, Wei Cui, Gracy X Rosario, Regan L Scott, Pramod Dhakal, Stephen J Renaud, Makoto Tachibana, M A Karim Rumi, Clifford W Mason, Adam J Krieg, Michael J Soares
The hemochorial placenta develops from the coordinated multilineage differentiation of trophoblast stem (TS) cells. An invasive trophoblast cell lineage remodels uterine spiral arteries, facilitating nutrient flow, failure of which is associated with pathological conditions such as preeclampsia, intrauterine growth restriction, and preterm birth. Hypoxia plays an instructive role in influencing trophoblast cell differentiation and regulating placental organization. Key downstream hypoxia-activated events were delineated using rat TS cells and tested in vivo, using trophoblast-specific lentiviral gene delivery and genome editing...
November 2, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27802134/from-the-stem-of-the-placental-tree-trophoblast-stem-cells-and-their-progeny
#8
REVIEW
Paulina Anna Latos, Myriam Hemberger
Trophoblast stem cells (TSCs) retain the capacity to self-renew indefinitely and harbour the potential to differentiate into all trophoblast subtypes of the placenta. Recent studies have shown how signalling cascades integrate with transcription factor circuits to govern the fine balance between TSC self-renewal and differentiation. In addition, breakthroughs in reprogramming strategies have enabled the generation of TSCs from fibroblasts, opening up exciting new avenues that may allow the isolation of this stem cell type from other species, notably humans...
October 15, 2016: Development
https://www.readbyqxmd.com/read/27759009/zika-virus-reveals-broad-tissue-and-cell-tropism-during-the-first-trimester-of-pregnancy
#9
Hicham El Costa, Jordi Gouilly, Jean-Michel Mansuy, Qian Chen, Claude Levy, Géraldine Cartron, Francisco Veas, Reem Al-Daccak, Jacques Izopet, Nabila Jabrane-Ferrat
The outbreak of the Zika Virus (ZIKV) and its association with fetal abnormalities have raised worldwide concern. However, the cellular tropism and the mechanisms of ZIKV transmission to the fetus during early pregnancy are still largely unknown. Therefore, we ex vivo modeled the ZIKV transmission at the maternal-fetal interface using organ culture from first trimester pregnancy samples. Here, we provide evidence that ZIKV strain circulating in Brazil infects and damages tissue architecture of the maternal decidua basalis, the fetal placenta and umbilical cord...
October 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27697226/alcohol-exposure-impairs-trophoblast-survival-and-alters-subtype-specific-gene-expression-in%C3%A2-vitro
#10
J I Kalisch-Smith, J E Outhwaite, D G Simmons, M Pantaleon, K M Moritz
Maternal alcohol consumption is common prior to pregnancy recognition and in the rat results in altered placental development and fetal growth restriction. To assess the effect of ethanol (EtOH) exposure on the differentiation of trophoblast stem (TS) cells, mouse TS lines were differentiated in vitro for 6 days in 0%, 0.2% or 1% EtOH. This reduced both trophoblast survival and expression of labyrinth and junctional zone trophoblast subtype-specific genes. This suggests that fetal growth restriction and altered placental development associated with maternal alcohol consumption in the periconceptional period could be mediated in part by direct effects on trophoblast development...
October 2016: Placenta
https://www.readbyqxmd.com/read/27683262/hypoxic-stress-forces-irreversible-differentiation-of-a-majority-of-mouse-trophoblast-stem-cells-to-giant-cell-fate-despite-fgf4
#11
Yu Yang, Marcia Arenas-Hernandez, Nardhy Gomez-Lopez, Jing Dai, Graham C Parker, Elizabeth E Puscheck, Daniel A Rappolee
Hypoxic, hyperosmotic, and genotoxic stress slow mouse trophoblast stem cell (mTSC) proliferation, decrease potency/stemness and increase differentiation. Previous reports suggest a period of reversibility in stress-induced mTSC differentiation. Here we show that hypoxic stress at 0.5% O2 decreased potency factor protein by ~60-90% and reduced growth to nil. Hypoxia caused a 35-fold increase in apoptosis at Day 3 and a 2-fold increase at Day 6 above baseline. The baseline apoptosis rate was only 0.3%. Total protein was never less than baseline during hypoxic treatment, suggesting 0...
September 28, 2016: Biology of Reproduction
https://www.readbyqxmd.com/read/27626379/distinct-features-of-h3k4me3-and-h3k27me3-chromatin-domains-in-pre-implantation-embryos
#12
Xiaoyu Liu, Chenfei Wang, Wenqiang Liu, Jingyi Li, Chong Li, Xiaochen Kou, Jiayu Chen, Yanhong Zhao, Haibo Gao, Hong Wang, Yong Zhang, Yawei Gao, Shaorong Gao
Histone modifications have critical roles in regulating the expression of developmental genes during embryo development in mammals. However, genome-wide analyses of histone modifications in pre-implantation embryos have been impeded by the scarcity of the required materials. Here, by using a small-scale chromatin immunoprecipitation followed by sequencing (ChIP-seq) method, we map the genome-wide profiles of histone H3 lysine 4 trimethylation (H3K4me3) and histone H3 lysine 27 trimethylation (H3K27me3), which are associated with gene activation and repression, respectively, in mouse pre-implantation embryos...
September 14, 2016: Nature
https://www.readbyqxmd.com/read/27616671/sox21-deletion-in-mice-causes-postnatal-growth-deficiency-without-physiological-disruption-of-hypothalamic-pituitary-endocrine-axes
#13
Leonard Y M Cheung, Hideyuki Okano, Sally A Camper
The hypothalamic-pituitary axes are the coordinating centers for multiple endocrine gland functions and physiological processes. Defects in the hypothalamus or pituitary gland can cause reduced growth and severe short stature, affecting approximately 1 in 4000 children, and a large percentage of cases of pituitary hormone deficiencies do not have an identified genetic cause. SOX21 is a protein that regulates hair, neural, and trophoblast stem cell differentiation. Mice lacking Sox21 have reduced growth, but the etiology of this growth defect has not been described...
January 5, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27615797/novel-o-glcnacylation-on-ser-40-of-canonical-h2a-isoforms-specific-to-viviparity
#14
Mitsuko Hirosawa, Koji Hayakawa, Chikako Yoneda, Daisuke Arai, Hitoshi Shiota, Takehiro Suzuki, Satoshi Tanaka, Naoshi Dohmae, Kunio Shiota
We report here newly discovered O-linked-N-acetylglucosamine (O-GlcNAc) modification of histone H2A at Ser(40) (H2AS40Gc). The mouse genome contains 18 H2A isoforms, of which 13 have Ser(40) and the other five have Ala(40). The combination of production of monoclonal antibody and mass spectrometric analyses with reverse-phase (RP)-high performance liquid chromatography (HPLC) fractionation indicated that the O-GlcNAcylation is specific to the Ser(40) isoforms. The H2AS40Gc site is in the L1 loop structure where two H2A molecules interact in the nucleosome...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27604461/dna-methylation-mediated-up-regulation-of-terra-non-coding-rna-is-coincident-with-elongated-telomeres-in-the-human-placenta
#15
Boris Novakovic, Christine E Napier, Regan Vryer, Eva Dimitriadis, Ursula Manuelpillai, Andrew Sharkey, Jeffrey M Craig, Roger R Reddel, Richard Saffery
STUDY QUESTION: What factors regulate elongated telomere length in the human placenta? SUMMARY ANSWER: Hypomethylation of TERRA promoters in the human placenta is associated with high expression TERRA genes, however, no clear mechanistic link between these phenomena and elongated telomere length in the human placenta was found. WHAT IS KNOWN ALREADY: Human placenta tissue and trophoblasts show longer telomere lengths compared to gestational age-matched somatic cells...
September 7, 2016: Molecular Human Reproduction
https://www.readbyqxmd.com/read/27591247/stem-cell-insights-into-human-trophoblast-lineage-differentiation
#16
Teena Kjb Gamage, Lawrence W Chamley, Joanna L James
BACKGROUND: The human placenta is vital for fetal development, yet little is understood about how it forms successfully to ensure a healthy pregnancy or why this process is inadequate in 1 in 10 pregnancies, leading to miscarriage, intrauterine growth restriction or preeclampsia. Trophoblasts are placenta-specific epithelial cells that maximize nutrient exchange. All trophoblast lineages are thought to arise from a population of trophoblast stem cells (TSCs). However, whilst the isolation of murine TSC has led to an explosion in understanding murine placentation, the isolation of an analogous human TSC has proved more difficult...
September 2, 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27590756/antiproliferative-effects-of-mesenchymal-stem-cells-and-epithelial-cells-on-lymphocytes
#17
E V Svirshchevskaya, R A Poltavtseva, I P Beletskii, I I Selezneva, G T Sukhikh
We analyzed the interactions between peripheral blood lymphocytes from heterologous donors with mesenchymal stem cells obtained from the tooth pulp and trophoblast. In mixed cultures, proliferation of both lymphocytes and mesenchymal stem cells was suppressed. Similar suppressive effects were observed in lymphocyte cultures mixed with epithelial cells (hepatocytes HeG2 and renal epithelial cells HEK293). This suppression can be determined by impairment of normal adhesion contacts between cells of different origin...
August 2016: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27562703/water-extracted-perilla-frutescens-increases-endometrial-receptivity-though-leukemia-inhibitory-factor-dependent-expression-of-integrins
#18
Eun-Yeong Kim, Hee-Jung Choi, Tae-Wook Chung, Jun-Yong Choi, Hyung Sik Kim, Yeon-Seop Jung, Syng-Ook Lee, Ki-Tae Ha
The leaves and stems of Perilla frutescens var. acuta Kudo (PF) have been used to prevent threatened abortion in traditional medicine in the East Asian countries. Because reduced receptivity of endometrium is a cause of abortion, we analyzed the action of PF on the endometrial receptivity. PF increased the level of leukemia inhibitory factor (LIF), a major cytokine regulating endometrial receptivity, and LIF receptor in human endometrial Ishikawa cells. The PF-induced LIF expression was mediated by c-jun N-terminal kinase (JNK) and p38 pathways...
August 2016: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/27500445/protocol-for-the-direct-conversion-of-murine-embryonic-fibroblasts-into-trophoblast-stem-cells
#19
Caroline Kubaczka, Hubert Schorle
Trophoblast stem cells (TSCs) arise as a consequence of the first cell fate decision in mammalian development. They can be cultured in vitro, retaining the ability to self-renew and to differentiate into all subtypes of the trophoblast lineage, equivalent to the in vivo stem cell population giving rise to the fetal portion of the placenta. Therefore, TSCs offer a unique model to study placental development and embryonic versus extra-embryonic cell fate decision in vitro. From the blastocyst stage onwards, a distinct epigenetic barrier consisting of DNA methylation and histone modifications tightly separates both lineages...
2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27487747/direct-reprogramming-to-multipotent-trophoblast-stem-cells-and-is-pluripotency-needed-for-regenerative-medicine-either
#20
COMMENT
Yu Yang, Graham C Parker, Elizabeth E Puscheck, Daniel A Rappolee
No abstract text is available yet for this article.
2016: Stem Cell Investigation
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