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https://www.readbyqxmd.com/read/27886052/a-melting-curve-based-multiplex-rt-qpcr-assay-for-simultaneous-detection-of-four-human-coronaviruses
#1
Zhenzhou Wan, Ya'nan Zhang, Zhixiang He, Jia Liu, Ke Lan, Yihong Hu, Chiyu Zhang
Human coronaviruses HCoV-OC43, HCoV-229E, HCoV-NL63 and HCoV-HKU1 are common respiratory viruses associated with acute respiratory infection. They have a global distribution. Rapid and accurate diagnosis of HCoV infection is important for the management and treatment of hospitalized patients with HCoV infection. Here, we developed a melting curve-based multiplex RT-qPCR assay for simultaneous detection of the four HCoVs. In the assay, SYTO 9 was used to replace SYBR Green I as the fluorescent dye, and GC-modified primers were designed to improve the melting temperature (Tm) of the specific amplicon...
November 23, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27863398/unique-epigenetic-gene-profiles-define-human-breast-cancers-with-poor-prognosis
#2
Samuel Peña-Llopis, Yihong Wan, Elisabeth D Martinez
Epigenetic enzymes are at the nexus of cellular regulatory cascades and can drive cancer-specific deregulation at all stages of the oncogenic process, yet little is known about their prognostic value in human patients. Here, we used qRT-PCR to profile at high resolution the expression of fifty-five epigenetic genes in over one hundred human breast cancer samples and patient-matched benign tissues. We correlated expression patterns with clinical and histological parameters and validated our findings in two independent large patient cohorts (TCGA and METABRIC)...
November 14, 2016: Oncotarget
https://www.readbyqxmd.com/read/27824815/reply-to-ppar-%C3%AE-regulates-pharmacological-but-not-physiological-or-pathological-osteoclast-formation
#3
Ronald M Evans, Yihong Wan
No abstract text is available yet for this article.
November 8, 2016: Nature Medicine
https://www.readbyqxmd.com/read/27762598/identification-of-two-new-hiv-1-circulating-recombinant-forms-crf87_cpx-and-crf88_bc-from-reported-unique-recombinant-forms-in-asia
#4
Yihong Hu, Zhenzhou Wan, Yan-Heng Zhou, Davey M Smith, Yong-Tang Zheng, Chiyu Zhang
The on-going generation of HIV-1 inter-subtype recombination has led to new circulating recombinant forms (CRFs) and unique recombinant forms (URFs) in Asia. Here, we evaluated whether previously reported URFs were actually CRFs. All available complete or near full-length HIV-1 URFs sequences from Asia were retrieved from the HIV Los Alamos National Laboratory Sequence database, and phylogenetic, transmission cluster and bootscan analyses were performed using MEGA 6.0, Cluster Picker 1.2.1, and SimPlot3.5.1...
October 20, 2016: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/27692066/macrophage-ppar%C3%AE-inhibits-gpr132-to-mediate-the-anti-tumor-effects-of-rosiglitazone
#5
Wing Yin Cheng, HoangDinh Huynh, Peiwen Chen, Samuel Peña-Llopis, Yihong Wan
Tumor-associated macrophage (TAM) significantly contributes to cancer progression. Human cancer is enhanced by PPARγ loss-of-function mutations, but inhibited by PPARγ agonists such as TZD diabetes drugs including rosiglitazone. However, it remains enigmatic whether and how macrophage contributes to PPARγ tumor-suppressive functions. Here we report that macrophage PPARγ deletion in mice not only exacerbates mammary tumor development but also impairs the anti-tumor effects of rosiglitazone. Mechanistically, we identify Gpr132 as a novel direct PPARγ target in macrophage whose expression is enhanced by PPARγ loss but repressed by PPARγ activation...
October 3, 2016: ELife
https://www.readbyqxmd.com/read/27464760/microrna-exert-macro-effects-on-cancer-bone-metastasis
#6
REVIEW
Scott R Baier, Yihong Wan
Bone metastasis is a deadly complication of cancers arising from many different primary tumor locations. Cross talk between cancer and bone cells is a well-established driver of bone metastasis, and recent work reveals microRNA (miRNA) as key players in this communication. Functional significance of miRNA was first demonstrated in cancer cells and has now also been documented in bone cell differentiation and skeletal remodeling. Review of recent literature highlights how different miRNAs can impact each step of the metastatic process by acting in both tumor and the metastatic niche to exert pleiotropic effects...
October 2016: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/27451264/a-novel-real-time-reverse-transcription-polymerase-chain-reaction-assay-with-partially-double-stranded-linear-dna-probe-for-sensitive-detection-of-hepatitis-c-viral-rna
#7
Tianfu Liu, Zhenzhou Wan, Jia Liu, Lingyi Zhang, Yanheng Zhou, Ke Lan, Yihong Hu, Chiyu Zhang
The detection and quantification of HCV RNA is very helpful for the management and treatment of HCV related diseases. Detection of low HCV viral load is a great challenge in HCV RNA detection. Here, we developed a novel real-time RT-PCR assay with partially double-stranded linear DNA probe which can detect all HCV genotypes and improve the detection performance. The novel assay has a wide linear dynamic range of HCV RNA quantification (1×10(2)-1×10(11)IU/ml) and a limit of detection of 78IU/ml. The assay exhibits an excellent reproducibility with 2...
October 2016: Journal of Virological Methods
https://www.readbyqxmd.com/read/27335162/genome-wide-characterization-of-the-ankyrin-repeats-gene-family-under-salt-stress-in-soybean
#8
Dayong Zhang, Qun Wan, Xiaolan He, Lihua Ning, Yihong Huang, Zhaolong Xu, Jia Liu, Hongbo Shao
Ankyrin repeats (ANK) gene family are common in diverse organisms and play important roles in cell growth, development and response to environmental stresses. Recently, genome-wide identification and evolutionary analyses of the ANK gene family have been carried out in Arabidopsis, rice and maize. However, little is known about the ANK genes in the whole soybean genome. In this study, we described the identification and structural characterization of 162ANK genes in soybean (GmANK). Then, comprehensive bioinformatics analyses of GmANK genes family were performed including gene locus, phylogenetic, domain composition analysis, chromosomal localization and expression profiling...
October 15, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27047508/soybean-c2h2-type-zinc-finger-protein-gmzfp3-with-conserved-qalggh-motif-negatively-regulates-drought-responses-in-transgenic-arabidopsis
#9
Dayong Zhang, Jinfeng Tong, Zhaolong Xu, Peipei Wei, Ling Xu, Qun Wan, Yihong Huang, Xiaolan He, Jiayin Yang, Hongbo Shao, Hongxiang Ma
Plant response to environmental stresses is regulated by a complicated network of regulatory and functional genes. In this study, we isolated the putative stress-associated gene GmZFP3 (a C2H2-type Zinc finger protein gene) based on the previous finding that it was one of two genes located in the QTL region between the Satt590 and Satt567 markers related to soybean tolerance to drought. Temporal and spatial expression analysis using quantitative real-time PCR indicated that GmZFP3 was primarily expressed in roots, stems and leaf organs and was expressed at low levels in flowers and soybean pods...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27039704/use-of-a-steady-state-baseline-to-address-evoked-vs-oscillation-models-of-visual-evoked-potential-origin
#10
Minpeng Xu, Yihong Jia, Hongzhi Qi, Yong Hu, Feng He, Xin Zhao, Peng Zhou, Lixin Zhang, Baikun Wan, Wei Gao, Dong Ming
There has been a long debate about the neural mechanism of event-related potentials (ERPs). Previously, no evidence or method was apparent to validate the two competing models, the evoked model and the oscillation model. One argument is whether the pre-stimulus brain oscillation could influence the following ERP. This study carried out an innovative visual oddball task experiment to investigate the dynamic process of visual evoked potentials. A period of stable oscillations of specified dominant frequencies and initial phases, i...
July 1, 2016: NeuroImage
https://www.readbyqxmd.com/read/26812161/gata2-is-a-rheostat-for-mesenchymal-stem-cell-fate-in-male-mice
#11
Xiaoxiao Li, HoangDinh Huynh, Hao Zuo, Marjo Salminen, Yihong Wan
Gata2 is a zinc finger transcription factor that is important in hematopoiesis and neuronal development. However, the roles of Gata2 in the mesenchymal lineages are poorly understood. In vitro studies suggest that Gata2 modulates adipocyte differentiation and mesenchymal stem cell (MSC) proliferation. To systematically determine the in vivo functions of Gata2 in the MSC lineage commitment and development, we have generated three mouse models in which Gata2 is specifically deleted in MSCs, adipocytes, or osteoblasts...
March 2016: Endocrinology
https://www.readbyqxmd.com/read/26777690/ligand-activation-of-err%C3%AE-by-cholesterol-mediates-statin-and-bisphosphonate-effects
#12
Wei Wei, Adam G Schwaid, Xueqian Wang, Xunde Wang, Shili Chen, Qian Chu, Alan Saghatelian, Yihong Wan
Nuclear receptors (NRs) are key regulators of gene expression and physiology. Nearly half of all human NRs lack endogenous ligands including estrogen-related receptor α (ERRα). ERRα has important roles in cancer, metabolism, and skeletal homeostasis. Affinity chromatography of tissue lipidomes with the ERRα ligand-binding domain (LBD) and subsequent transcriptional assays identified cholesterol as an endogenous ERRα agonist. Perturbation of cholesterol biosynthesis or inhibition of ERRα revealed the interdependence of cholesterol and ERRα...
March 8, 2016: Cell Metabolism
https://www.readbyqxmd.com/read/26456333/a-liver-bone-endocrine-relay-by-igfbp1-promotes-osteoclastogenesis-and-mediates-fgf21-induced-bone-resorption
#13
Xunde Wang, Wei Wei, Jing Y Krzeszinski, Yubao Wang, Yihong Wan
Fibroblast growth factor 21 (FGF21) promotes insulin sensitivity but causes bone loss. It elevates bone resorption by an undefined non-osteoclast-autonomous mechanism. We have detected a pro-osteoclastogenic activity in the hepatic secretome that is increased by FGF21 and largely attributed to insulin-like growth factor binding protein 1 (IGFBP1). Ex vivo osteoclast differentiation and in vivo bone resorption are both enhanced by recombinant IGFBP1 but suppressed by an IGFBP1-blocking antibody. Anti-IGFBP1 treatment attenuates ovariectomy-induced osteoporosis and abolishes FGF21-induced bone loss while maintaining its insulin-sensitizing metabolic benefit...
November 3, 2015: Cell Metabolism
https://www.readbyqxmd.com/read/26173181/nur77-prevents-excessive-osteoclastogenesis-by-inducing-ubiquitin-ligase-cbl-b-to-mediate-nfatc1-self-limitation
#14
Xiaoxiao Li, Wei Wei, HoangDinh Huynh, Hao Zuo, Xueqian Wang, Yihong Wan
Osteoclasts are bone-resorbing cells essential for skeletal remodeling. However, over-active osteoclasts can cause bone-degenerative disorders. Therefore, the level of NFATc1, the master transcription factor of osteoclast, must be tightly controlled. Although the activation and amplification of NFATc1 have been extensively studied, how NFATc1 signaling is eventually resolved is unclear. Here, we uncover a novel and critical role of the orphan nuclear receptor Nur77 in mediating an NFATc1 self-limiting regulatory loop to prevent excessive osteoclastogenesis...
July 14, 2015: ELife
https://www.readbyqxmd.com/read/25962679/new-therapeutic-targets-for-cancer-bone-metastasis
#15
REVIEW
Jing Y Krzeszinski, Yihong Wan
Bone metastases are dejected consequences of many types of tumors including breast, prostate, lung, kidney, and thyroid cancers. This complicated process begins with the successful tumor cell epithelial-mesenchymal transition, escape from the original site, and penetration into the circulation. The homing of tumor cells to the bone depends on both tumor-intrinsic traits and various molecules supplied by the bone metastatic niche. The colonization and growth of cancer cells in the osseous environment, which awaken their dormancy to form micro- and macro-metastasis, involve an intricate interaction between the circulating tumor cells and local bone cells including osteoclasts, osteoblasts, adipocytes, and macrophages...
June 2015: Trends in Pharmacological Sciences
https://www.readbyqxmd.com/read/25793404/hdac9-inhibits-osteoclastogenesis-via-mutual-suppression-of-ppar%C3%AE-rankl-signaling
#16
Zixue Jin, Wei Wei, HoangDinh Huynh, Yihong Wan
Recent studies suggest that the class II histone deacetylase (HDAC)9 plays important roles in physiology such as metabolism and immunity. Here, we report that HDAC9 also controls bone turnover by suppressing osteoclast differentiation and bone resorption. HDAC9 expression is down-regulated during osteoclastogenesis. Ex vivo osteoclast differentiation is accelerated by HDAC9 deletion but diminished by HDAC9 overexpression. HDAC9 knockout mice exhibit elevated bone resorption and lower bone mass. Bone marrow transplantation reveal that the osteoclastogenic defects are intrinsic to the hematopoietic lineage, because the excessive bone resorption phenotype can be conferred in wild-type (WT) mice receiving HDAC9-null bone marrow, and rescued in HDAC9-null mice receiving WT bone marrow...
May 2015: Molecular Endocrinology
https://www.readbyqxmd.com/read/25607894/sim1-inhibits-bone-formation-by-enhancing-the-sympathetic-tone-in-male-mice
#17
Xunde Wang, Wei Wei, Andrew R Zinn, Yihong Wan
Single-minded 1 (Sim1) is a basic helix-loop-helix Per-Arnt-Sim transcription factor that is important for neuronal development in the hypothalamus. Loss-of-function mutation of Sim1 causes early-onset obesity. However, it is unknown whether and how Sim1 regulates bone remodeling. In this study, we found that adult-onset Sim1 deletion increases bone formation, leading to high bone mass. In contrast, Sim1-overexpressing transgenic mice exhibit decreased bone formation and low bone mass. Sim1 does not directly regulate osteoblastogenesis, because bone marrow mesenchymal stem cells from Sim1 mutant mice display a normal capacity for osteoblast differentiation...
April 2015: Endocrinology
https://www.readbyqxmd.com/read/25590242/maternal-adiponectin-controls-milk-composition-to-prevent-neonatal-inflammation
#18
Zixue Jin, Yang Du, Adam G Schwaid, Ingrid W Asterholm, Philipp E Scherer, Alan Saghatelian, Yihong Wan
Adiponectin is an important adipokine. Increasing evidence suggests that altered adiponectin levels are linked with metabolic and inflammatory disorders. Here we report an important yet previously unrecognized function of adiponectin in lactation by which maternal adiponectin determines the inflammatory status in the nursing neonates. Surprisingly, both maternal adiponectin overexpression in the transgenic mice and maternal adiponectin deletion in the knockout mice lead to systemic inflammation in the pups, manifested as transient hair loss...
April 2015: Endocrinology
https://www.readbyqxmd.com/read/25549044/minireview-nuclear-receptor-regulation-of-osteoclast-and-bone-remodeling
#19
REVIEW
Zixue Jin, Xiaoxiao Li, Yihong Wan
Osteoclasts are bone-resorbing cells essential for skeletal remodeling and regeneration. However, excessive osteoclasts often contribute to prevalent bone degenerative diseases such as osteoporosis, arthritis, and cancer bone metastasis. Osteoclast dysregulation is also associated with rare disorders such as osteopetrosis, pycnodysostosis, Paget's disease, and Gorham-Stout syndrome. The nuclear receptor (NR) family of transcription factors functions as metabolic sensors that control a variety of physiological processes including skeletal homeostasis and serves as attractive therapeutic targets for many diseases...
February 2015: Molecular Endocrinology
https://www.readbyqxmd.com/read/25130399/mitochondrial-complex-i-activity-suppresses-inflammation-and-enhances-bone-resorption-by-shifting-macrophage-osteoclast-polarization
#20
Zixue Jin, Wei Wei, Marie Yang, Yang Du, Yihong Wan
Mitochondrial complex I (CI) deficiency is associated with multiple neurological and metabolic disorders. However, its effect on innate immunity and bone remodeling is unclear. Using deletion of the essential CI subunit Ndufs4 as a model for mitochondrial dysfunction, we report that mitochondria suppress macrophage activation and inflammation while promoting osteoclast differentiation and bone resorption via both cell-autonomous and systemic regulation. Global Ndufs4 deletion causes systemic inflammation and osteopetrosis...
September 2, 2014: Cell Metabolism
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