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leukemia inhibitory factor

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https://www.readbyqxmd.com/read/28334964/mutations-in-the-leukemia-inhibitory-factor-receptor-lifr-gene-and-lifr-deficiency-cause-urinary-tract-malformations
#1
Anne Kosfeld, Frank Brand, Anna-Carina Weiss, Martin Kreuzer, Michaela Goerk, Helge Martens, Stephanie Schubert, Anne-Kathrin Schäfer, Vera Riehmer, Imke Hennies, Jan Hinrich Bräsen, Lars Pape, Kerstin Amann, Lars Krogvold, Anna Bjerre, Christoph Daniel, Andreas Kispert, Dieter Haffner, Ruthild G Weber
Congenital anomalies of the kidneys and urinary tract (CAKUT) are the most common cause of chronic kidney disease in children. As CAKUT is a genetically heterogeneous disorder and most cases are genetically unexplained, we aimed to identify new CAKUT causing genes. Using whole-exome sequencing and trio-based de novo analysis, we identified a novel heterozygous de novo frameshift variant in the leukemia inhibitory factor receptor (LIFR) gene causing instability of the mRNA in a patient presenting with bilateral CAKUT and requiring kidney transplantation at one year of age...
March 8, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28330622/dido-as-a-switchboard-that-regulates-self-renewal-and-differentiation-in%C3%A2-embryonic-stem-cells
#2
Agnes Fütterer, Jésus de Celis, Rosana Navajas, Luis Almonacid, Julio Gutiérrez, Amaia Talavera-Gutiérrez, Cristina Pacios-Bras, Ilenia Bernascone, Fernando Martin-Belmonte, Carlos Martinéz-A
Transition from symmetric to asymmetric cell division requires precise coordination of differential gene expression. We show that embryonic stem cells (ESCs) mainly express DIDO3 and that their differentiation after leukemia inhibitory factor withdrawal requires DIDO1 expression. C-terminal truncation of DIDO3 (Dido3ΔCT) impedes ESC differentiation while retaining self-renewal; small hairpin RNA-Dido1 ESCs have the same phenotype. Dido3ΔCT ESC differentiation is rescued by ectopic expression of DIDO3, which binds the Dido locus via H3K4me3 and RNA POL II and induces DIDO1 expression...
March 10, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28303935/multiscale-microenvironmental-perturbation-of-pluripotent-stem-cell-fate-and-self-organization
#3
Yoji Tabata, Matthias P Lutolf
The combination of microfluidics with engineered three-dimensional (3D) matrices can bring new insights into the fate regulation of stem cells and their self-organization into organoids. Although there has been progress in 3D stem cell culturing, most existing in vitro methodologies do not allow for mimicking of the spatiotemporal heterogeneity of stimuli that drive morphogenetic processes in vivo. To address this, we present a perfusion-free microchip concept for the in vitro 3D perturbation of stem cell fate...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28297566/instructive-role-of-the-microenvironment-in-preventing-renal-fibrosis
#4
Kei Matsumoto, Sandhya Xavier, Jun Chen, Yujiro Kida, Mark Lipphardt, Reina Ikeda, Annie Gevertz, Mario Caviris, Antonis K Hatzopoulos, Ivo Kalajzic, James Dutton, Brian B Ratliff, Hong Zhao, Zbygniew Darzynkiewicz, Stefan Rose-John, Michael S Goligorsky
Accumulation of myofibroblasts is a hallmark of renal fibrosis. A significant proportion of myofibroblasts has been reported to originate via endothelial-mesenchymal transition. We initially hypothesized that exposing myofibroblasts to the extract of endothelial progenitor cells (EPCs) could reverse this transition. Indeed, in vitro treatment of transforming growth factor-β1 (TGF-β1)-activated fibroblasts with EPC extract prevented expression of α-smooth muscle actin (α-SMA); however, it did not enhance expression of endothelial markers...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28292010/the-anti-allergic-and-anti-inflammatory-effects-of-benjakul-extract-a-thai-traditional-medicine-its-constituent-plants-and-its-some-pure-constituents-using-in-vitro-experiments
#5
Sunita Makchuchit, Ruchilak Rattarom, Arunporn Itharat
Benjakul (BJK), a Thai traditional medicine preparation, has long been used for balanced health, controlled abnormal of element in the body, carminative, and relief of flatulence. It is composed of five plants: Piper interruptum Opiz., Piper longum L., Piper sarmentosum Roxb., Plumbago indica L., and Zingiber officinale Roscoe. The ethanolic extracts of BJK, its five individual plants, and pure constituents of BJK were investigated for their anti-allergic activity using immunoglobulin E (IgE)-sensitized β-hexosaminidase in the rat basophilic leukemia-2H3 (RBL-2H3) cells and anti-inflammatory activity using lipopolysaccharide (LPS)-induced nitric oxide (NO) and tumor necrosis factor-alpha (TNF-α) in the murine macrophage (RAW 264...
March 10, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28274230/appraisal-of-phytochemical-and-in-vitro-biological-attributes-of-an-unexplored-folklore-rhus-punjabensis-stewart
#6
Saira Tabassum, Madiha Ahmed, Bushra Mirza, Muhammad Naeem, Muhammad Zia, Zabta Khan Shanwari, Gul Majid Khan
BACKGROUND: The role of plants for discovery of therapeutic potential accentuates the need to know their biological attributes. The present study aims to comprehend the biological attributes of Rhus punjabensis, an unexplored traditional medicinal plant. METHODS: Leaf and stem extracts of R. punjabensis prepared in 11 different organic solvents are evaluated for multimode antioxidant potential, total phenolic and flavonoid contents were determined through colorimetric assays, HPLC-DAD analysis was carried out for quantification of various polyphenols in extracts...
March 9, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28247842/leukemia-inhibitory-factor-promotes-aggressiveness-of-chordoma
#7
Sukru Gulluoglu, Mesut Sahin, Emre Can Tuysuz, Cumhur Kaan Yaltirik, Aysegul Kuskucu, Ferda Ozkan, Fikrettin Sahin, Ugur Ture, Omer Faruk Bayrak
Chordomas are rare tumors of the spine and skull base that are locally destructive and resistant to chemo- and radiation therapy, with a poor prognosis and limited therapeutic options. Chordoma patients have a long life expectancy with high mortality from the disease. Cancer stem cells, which are known to exist in chordomas, have extensive proliferative and self-renewal potential, and are responsible for maintaining tumor heterogeneity along with chemotherapy and radiotherapy resistance. The leukemia inhibitory factor has multiple functions in stem-cell biology, the immune response, and cancer, and is potentially a key molecule that allows cancer stem cells to self-renew...
February 28, 2017: Oncology Research
https://www.readbyqxmd.com/read/28228280/autocrine-loop-involving-il-6-family-member-lif-lif-receptor-and-stat4-drives-sustained-fibroblast-production-of-inflammatory-mediators
#8
Hung N Nguyen, Erika H Noss, Fumitaka Mizoguchi, Christine Huppertz, Kevin S Wei, Gerald F M Watts, Michael B Brenner
Fibroblasts are major contributors to and regulators of inflammation and dominant producers of interleukin-6 (IL-6) in inflammatory diseases like rheumatoid arthritis. Yet, compared to leukocytes, the regulation of inflammatory pathways in fibroblasts is largely unknown. Here, we report that analyses of genes coordinately upregulated with IL-6 pointed to STAT4 and leukemia inhibitory factor (LIF) as potentially linked. Gene silencing revealed that STAT4 was required for IL-6 transcription. STAT4 was recruited to the IL-6 promoter after fibroblast activation, and LIF receptor (LIFR) and STAT4 formed a molecular complex that, together with JAK1 and TYK2 kinases, controlled STAT4 activation...
February 21, 2017: Immunity
https://www.readbyqxmd.com/read/28205646/connexin30-3-is-expressed-in-mouse-embryonic-stem-cells-and-is-responsive-to-leukemia-inhibitory-factor
#9
Mikako Saito, Yuma Asai, Keiichi Imai, Shoya Hiratoko, Kento Tanaka
The expression of 19 connexin (Cx) isoforms was observed in the mouse embryonic stem (ES) cell line, EB3. Their expression patterns could be classified into either pluripotent state-specific, differentiating stage-specific, or non-specific Cxs. We focused on Cx30.3 as typical of the first category. Cx30.3 was pluripotent state-specific and upregulated by leukemia inhibitory factor (LIF), a specific cytokine that maintains the pluripotent state of ES cell, via a Jak signaling pathway. Cx30.3 protein was localized to both the cell membrane and cytosol...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28194116/dynamic-and-static-exercises-differentially-affect-plasma-cytokine-content-in-elite-endurance-and-strength-trained-athletes-and-untrained-volunteers
#10
Leonid V Kapilevich, Anna N Zakharova, Anastasia V Kabachkova, Tatyana A Kironenko, Sergei N Orlov
Extensive exercise increases the plasma content of IL-6, IL-8, IL-15, leukemia inhibitory factor (LIF), and several other cytokines via their augmented transcription in skeletal muscle cells. However, the relative impact of aerobic and resistant training interventions on cytokine production remains poorly defined. In this study, we compared effects of dynamic and static load on cytokine plasma content in elite strength- and endurance-trained athletes vs. healthy untrained volunteers. The plasma cytokine content was measured before, immediately after, and 30 min post-exercise using enzyme-linked immunosorbent assay...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28186594/-association-of-genetic-polymorphisms-of-kir-hla-system-with-chronic-myeloid-leukemia-among-ethnic-hans-from-southern-china
#11
Zhihui Deng, Jianxin Zhen, Daming Wang, Liumei He, Hongyan Zou
OBJECTIVE: To explore the association of KIR-HLA gene polymorphism with chronic myeloid leukemia (CML) among ethnic Hans from southern China. METHODS: A total of 172 adult CML patients and 480 unrelated healthy controls were screened for the presence of KIR with sequence-specific primers-PCR (PCR-SSP) and sequence-based typing (SBT) of HLA-A, -B and -C loci. Polymorphisms of the KIR-HLA system were analyzed at 4 levels, and the frequencies of KIR framework genes and KIR profiles, classⅠHLA ligands, matched KIR+HLA pairs and KIR-HLA compound profile were compared between the two groups...
February 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28184923/mir-181a-5p-an-inducer-of-wnt-signaling-facilitates-cell-proliferation-in-acute-lymphoblastic-leukemia
#12
Xiaoming Lyu, Jinbang Li, Xi Yun, Rui Huang, Xubin Deng, Yingping Wang, Youming Chen, Gang Xiao
Uncontrolled Wnt signaling causes leukemia. Inactivation of Wnt antagonists could play an important role in leukemia progression by activating the Wnt/β-catenin pathway. Wnt inhibitory factor-1 (WIF1) is one of the important Wnt antagonists. Few miRNAs have been reported to directly target this gene in hematopoiesis. Here, we observed that miR-181a-5p expression was markedly overexpressed in several leukemia cell lines and acute lymphoblastic leukemia (ALL) samples compared with that noted in normal peripheral blood mononuclear cells...
March 2017: Oncology Reports
https://www.readbyqxmd.com/read/28150717/wogonin-reversed-resistant-human-myelogenous-leukemia-cells-via-inhibiting-nrf2-signaling-by-stat3-nf-%C3%AE%C2%BAb-inactivation
#13
Xuefen Xu, Xiaobo Zhang, Yi Zhang, Lin Yang, Yicheng Liu, Shaoliang Huang, Lu Lu, Lingyi Kong, Zhiyu Li, Qinglong Guo, Li Zhao
Constitutive NF-E2-related factor 2 (Nrf2, NFE2L2) activation has been recently reported to play a pivotal role in enhancing cell survival and resistance to anticancer drugs in many tumors. Wogonin had strong reversal potency via reduction of Nrf2 mRNA in Adriamycin (ADR)-induced resistant human chronic myelogenous leukemia (CML) K562/A02, but the mechanism of reduction of Nrf2 mRNA was still unclear. In this study, we aimed to delineate the mechanism by which Wogonin suppressed transcription of Nrf2 in resistant CML cells and further evaluate the reversal effects of Wogonin on the established animal models...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28123591/isoimperatorin-induces-apoptosis-of-the-sgc-7901-human-gastric-cancer-cell-line-via-the-mitochondria-mediated-pathway
#14
Kehui Tong, Chang Xin, Wenzhong Chen
The present study was designed to investigate the antiproliferative activity of isoimperatorin against SGC-7901 cells and to examine the possible mechanisms. The antiproliferative activity of isoimperatorin against SGC-7901 cells was evaluated using an MTT assay, and the mechanisms were investigated using flow cytometry and western blot assays, which were used to determine the apoptotic rate and expression levels of mitochondria-mediated apoptosis-associated proteins, including Survivin, myeloid leukemia cell-1 (Mcl-1), B cell lymphoma-extra large (Bcl-xl), B cell lymphoma 2 (Bcl-2), second mitochondria-derived activator of caspase (Smac), Bcl-2-associated X factor (Bax), cleaved (c)-caspase-3 and c-caspase-9 in SGC-7901 cells...
January 2017: Oncology Letters
https://www.readbyqxmd.com/read/28122728/absence-of-suppressor-of-cytokine-signaling-2-turns-cardiomyocytes-unresponsive-to-lif-dependent-increase-in-ca2-levels
#15
Cibele Rocha-Resende, Itamar Couto Guedes de Jesus, Danilo Roman-Campos, Artur S Miranda, Fabiana Alves, Rodrigo Ribeiro Resende, Jader Dos Santos Cruz, Fabiana Simão Machado, Silvia Guatimosim
Little is known regarding the role of the Suppressor of Cytokine Signaling (SOCS) in the control of cytokine signaling in cardiomyocytes. We investigated the consequences of SOCS2 ablation for Leukemia Inhibitory Factor (LIF)-induced enhancement of intracellular Ca(2+) ([Ca(2+)]i) transient by performing experiments with cardiomyocytes from SOCS2-knockout (ko) mice. Similar levels of SOCS3 transcripts were seen in cardiomyocytes from wild-type and SOCS2-ko, while SOCS1 mRNA was reduced in SOCS2-ko. Immunoprecipitation experiments showed increased SOCS3 association with gp130 receptor in SOCS2-ko myocytes...
January 25, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28117780/sorla-and-clc-clf-1-dependent-downregulation-of-cntfr%C3%AE-as-demonstrated-by-western-blotting-inhibition-of-lysosomal-enzymes-and-immunocytochemistry
#16
Jakob V Larsen, Claus M Petersen
The heterodimeric cytokine Cardiotrophin-like Cytokine:Cytokine-like Factor-1 (CLC:CLF-1) targets the glycosylphosphatidylinositol (GPI)-anchored CNTFRα to form a trimeric complex that subsequently recruits glycoprotein 130/Leukemia Inhibitory Factor Receptor-β (gp130/LIFRβ) for signaling. Both CLC and CNTFRα are necessary for signaling but so far CLF-1 has only been known as a putative facilitator of CLC secretion. However, it has recently been shown that CLF-1 contains three binding sites: one for CLC; one for CNTFRα (that may promote assembly of the trimeric complex); and one for the endocytic receptor sorLA...
January 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28105120/effects-of-curcumin-on-the-apoptosis-of-cardiomyocytes-and-the-expression-of-nf-%C3%AE%C2%BAb-ppar-%C3%AE-and-bcl-2-in-rats-with-myocardial-infarction-injury
#17
Feng-Hua Lv, Hong-Lei Yin, Yi-Qun He, Hui-Min Wu, Juan Kong, Xiao-Yan Chai, Su-Rong Zhang
Curcumin is a natural polyphenol with powerful antioxidant and anti-inflammatory properties. The present study evaluated the protective effect of curcumin on myocardial injury in rats as well as the mechanisms underlying these effects, and examined the expression of nuclear factor-κB (NF-κB), peroxisome proliferator-activated receptor-γ (PPAR-γ) and B-cell leukemia/lymphoma-2 (Bcl-2) following myocardial infarction. A rat model of myocardial infarction was successfully established. Hematoxylin and eosin staining showed cellular atrophy and hyperchromatic cytoplasm in the myocardial infarction area...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28101351/pro-inflammatory-effect-of-a-traditional-chinese-medicine-formula-with-potent-anti-cancer-activity-in-vitro-impedes-tumor-inhibitory-potential-in-vivo
#18
Lei Xia, Maksym Plachynta, Tangjingjun Liu, Xiao Xiao, Jialei Song, Xiaogang Li, Mu Zhang, Yao Yao, Heng Luo, Xiaojiang Hao, Yaacov Ben-David
Medicinal formulas are a part of the complex discipline of traditional Chinese medicine that has been used for centuries in China and East Asia. These formulas predominantly consist of the extracts isolated from herbal plants, animal parts and medicinal minerals. The present study aimed to investigate the impact of 150 formulas, used as non-prescription drugs in China, on the treatment of cancer. A formula was identified, C54, commonly used to treat sore throats, which exhibited marked growth inhibition in vitro, associated with cell cycle arrest and apoptosis...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28098879/cytokines-inducers-and-inhibitors-modulate-mmp-2-and-mmp%C3%A2-9-secretion-by-human-fanconi-anemia-immortalized-fibroblasts
#19
M W Roomi, T Kalinovsky, M Rath, A Niedzwiecki
Acute myeloid leukemia and head and neck squamous cell carcinomas are the major causes of mortality and morbidity in Fanconi anemia (FA) patients. Matrix metalloproteinases (MMPs), particularly MMP-2 and MMP-9, have been implicated in tumor invasion and metastasis. Various cytokines, mitogens, growth factors, inducers and inhibitors control MMP activities. We investigated the roles of these in the regulation of MMP-2 and MMP-9 in human immortalized fibroblasts from FA. Human FA immortalized fibroblast cell lines FA-A:PD220 and FA-D2:PD20 were grown in minimum essential medium (MEM) supplemented with 15% fetal bovine serum (FBS) and antibiotics in 24-well tissue culture plates...
January 16, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28089671/pdgfr%C3%AE-cells-in-embryonic-stem-cell-cultures-represent-the-in%C3%A2-vitro-equivalent-of-the-pre-implantation-primitive-endoderm-precursors
#20
Antonio Lo Nigro, Anchel de Jaime-Soguero, Rita Khoueiry, Dong Seong Cho, Giorgia Maria Ferlazzo, Ilaria Perini, Vanesa Abon Escalona, Xabier Lopez Aranguren, Susana M Chuva de Sousa Lopes, Kian Peng Koh, Pier Giulio Conaldi, Wei-Shou Hu, An Zwijsen, Frederic Lluis, Catherine M Verfaillie
In early mouse pre-implantation development, primitive endoderm (PrE) precursors are platelet-derived growth factor receptor alpha (PDGFRα) positive. Here, we demonstrated that cultured mouse embryonic stem cells (mESCs) express PDGFRα heterogeneously, fluctuating between a PDGFRα+ (PrE-primed) and a platelet endothelial cell adhesion molecule 1 (PECAM1)-positive state (epiblast-primed). The two surface markers can be co-detected on a third subpopulation, expressing epiblast and PrE determinants (double-positive)...
February 14, 2017: Stem Cell Reports
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