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Ting Chen

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https://www.readbyqxmd.com/read/28087741/14-3-3sigma-contributes-to-radioresistance-by-regulating-dna-repair-and-cell-cycle-via-parp1-and-chk2
#1
Yifan Chen, Zhaomin Li, Zizheng Dong, Jenny Beebe, Ke Yang, Liwu Fu, Jian-Ting Zhang
: 14-3-3sigma has been implicated in the development of chemo and radiation resistance and in poor prognosis of multiple human cancers. While it has been postulated that 14-3-3sigma contributes to these resistances via inhibiting apoptosis and arresting cells in G2/M phase of the cell cycle, the molecular basis of this regulation is currently unknown. In this study, we tested the hypothesis that 14-3-3sigma causes resistance to DNA-damaging treatments by enhancing DNA repair in cells arrested in G2/M phase following DNA-damaging treatments...
January 13, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28087713/functional-genomics-reveals-that-tumors-with-activating-phosphoinositide-3-kinase-mutations-are-dependent-on-accelerated-protein-turnover
#2
Teresa Davoli, Kristen E Mengwasser, Jingjing Duan, Ting Chen, Camilla Christensen, Eric C Wooten, Anthony N Anselmo, Mamie Z Li, Kwok-Kin Wong, Kristopher T Kahle, Stephen J Elledge
Activating mutations in the phosphoinositide 3-kinase (PI3K) signaling pathway are frequently identified in cancer. To identify pathways that support PI3K oncogenesis, we performed a genome-wide RNAi screen in isogenic cell lines harboring wild-type or mutant PIK3CA to search for PI3K synthetic-lethal (SL) genes. A combined analysis of these results with a meta-analysis of two other large-scale RNAi screening data sets in PI3K mutant cancer cell lines converged on ribosomal protein translation and proteasomal protein degradation as critical nononcogene dependencies for PI3K-driven tumors...
December 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/28087693/de-novo-genome-and-transcriptome-assembly-of-the-canadian-beaver-castor-canadensis
#3
Si Lok, Tara A Paton, Zhuozhi Wang, Gaganjot Kaur, Susan Walker, Ryan K C Yuen, Wilson W L Sung, Joseph Whitney, Janet A Buchanan, Brett Trost, Naina Singh, Beverly Apresto, Nan Chen, Matthew Coole, Travis J Dawson, Karen Y Ho, Zhizhou Hu, Sanjeev Pullenayegum, Kozue Samler, Arum Shipstone, Fiona Tsoi, Ting Wang, Sergio L Pereira, Pirooz Rostami, Carol Ann Ryan, Amy Hin Yan Tong, Karen Ng, Yogi Sundaravadanam, Jared T Simpson, Burton K Lim, Mark D Engstrom, Christopher J Dutton, Kevin C R Kerr, Maria Franke, William Rapley, Richard F Wintle, Stephen W Scherer
The Canadian beaver (Castor canadensis) is the largest indigenous rodent in North America. We report a draft annotated assembly of the beaver genome, the first for a large rodent and the first mammalian genome assembled directly from uncorrected and moderate coverage (< 30 ×) long-reads generated by single-molecule sequencing. The genome size is 2.7 Gb estimated by k-mer analysis. We assembled the beaver genome using the new Canu assembler optimized for noisy reads. The resulting assembly was refined using Pilon supported by shortreads (80 ×) and checked for accuracy by congruency against an independent short-read assembly...
January 13, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28087178/acupuncture-for-serum-uric-acid-in-patients-with-asymptomatic-hyperuricemia-a-randomized-double-blind-placebo-controlled-trial
#4
Yingjuan Huang, Jun Meng, Baoguo Sun, Ting Xiang, Xin Zhou, Biyu Xu, Yingzi Wu, Zexiong Chen, Shijun Zhang
BACKGROUND: Hyperuricemia (HUA) is the most common disease associated with cardiovascular disease, metabolic syndrome, hypertension, and kidney disease. The objective of the current study was to evaluate the preliminary efficacy, mechanism, and safety of acupuncture on serum uric acid in patients with asymptomatic HUA. METHODS: A randomized, placebo-controlled trial among 123 patients with asymptomatic HUA was conducted. The acupoints used in the acupuncture group were bilateral Five Shu in Spleen Meridian...
January 6, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28086946/mir-1307-promotes-ovarian-cancer-cell-chemoresistance-by-targeting-the-ing5-expression
#5
Wen-Ting Chen, Yu-Jia Yang, Zhen-Dong Zhang, Qiang An, Na Li, Wei Liu, Bing Yang
BACKGROUND: We aimed to investigate the function of miR-1307 in chemoresistance and to explore its chemoresistance mechanism in ovarian cancer. METHODS: IC50 determination was used to test the chemoresistance profling in ovarian cancer cells. QRT-PCR or western blot was used to validate the expression level of miR-1307 and candidate gene or protein. Colony formation assay and FITC-labeled enhanced Annexin V immunofluorescence were used to compare cell proliferation and apoptosis ability, respectively...
January 11, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28081567/risk-of-rebleeding-and-mortality-in-cirrhotic-patients-with-peptic-ulcer-bleeding-a-12-year-nationwide-cohort-study
#6
Shih-Cheng Yang, Chien-Ning Hsu, Chih-Ming Liang, Wei-Chen Tai, Cheng-Kun Wu, Chih-Wei Shih, Ming-Kun Ku, Lan-Ting Yuan, Jiunn-Wei Wang, Kuo-Lun Tseng, Tsung-Hsing Hung, Seng-Howe Nguang, Pin-I Hsu, Deng-Chyang Wu, Seng-Kee Chuah
Although a few studies have investigated the risks of peptic ulcer bleeding (PUB) in cirrhotic patients, large population-based studies on in-hospital and long-term reports on recurrent PUB in a cohort of cirrhotic patients are lacking. This 12-year nationwide cohort study aimed to investigate the risks of in-hospital and long-term rebleeding and mortality in cirrhotic patients and to identify possible risk factors. Patient data from 1997 to 2008 were extracted from the National Health Insurance Research Database in Taiwan...
2017: PloS One
https://www.readbyqxmd.com/read/28081247/changes-of-oxidative-stress-glutathione-and-its-dependent-antioxidant-enzyme-activities-in-patients-with-hepatocellular-carcinoma-before-and-after-tumor-resection
#7
Shao-Bin Cheng, Hsiao-Tien Liu, Sin-Yuan Chen, Ping-Ting Lin, Chia-Yu Lai, Yi-Chia Huang
The changes in and relationship between oxidative stress and the glutathione (GSH) antioxidant system in the plasma and tissues of patients with hepatocellular carcinoma (HCC) before and after tumor resection have not been clearly determined. We investigated the changes in oxidative stress, GSH status and its dependent antioxidant enzyme activities in HCC patients before and after tumor resection, and to determine the association of oxidative stress with GSH and its dependent antioxidant enzyme activities in plasma and tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28079897/tsc1-expression-by-dendritic-cells-is-required-to-preserve-t-cell-homeostasis-and-response
#8
Yuechen Luo, Wenwen Li, Gang Yu, Juan Yu, Ling Han, Ting Xue, Zhina Sun, Song Chen, Chunming Fang, Chunxiao Zhao, Qing Niu, Fei Yang, Zhongchao Han, Tao Cheng, Yun Zeng, Fang Liao, Guogang Xu, Xiaoming Feng
Dendritic cells (DCs) are pivotal to the induction of adaptive T-cell immune responses. Recent evidence highlights a critical role of tuberous sclerosis complex 1 (Tsc1), a primarily upstream negative regulator of mammalian target of rapamycin (mTOR), in DC development, but whether and how Tsc1 directly regulate mature DC function in vivo remains elusive. Here we show that selective disruption of Tsc1 in DCs results in a lymphoproliferative disorder with the spontaneous activation of T cells. Tsc1 deficiency results in the activation of mTORC1-PPARγ pathway, which leads to the upregulation of neuropilin-1 (Nrp1) expression on DCs to stimulate naive T-cell proliferation...
January 12, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28079813/surgical-treatment-for-male-prolactinoma-a-retrospective-study-of-184-cases
#9
Yi-Jun Song, Mei-Ting Chen, Wei Lian, Bing Xing, Yong Yao, Ming Feng, Ren-Zhi Wang
A total of 184 cases of surgically treated male prolactinoma were analyzed retrospectively to summarize the outcome of this surgical intervention. We analyzed the general characteristics, clinical manifestations, hormone levels, imaging features, preoperative treatments, surgical outcomes, pathology results, and follow-up records for all included patients. The most common clinical manifestations included sexual dysfunction (47.4%), headache (55.9%), and visual disturbance (46.7%). Serum prolactin levels ranged from 150 to 204,952 ng/mL...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079618/diffusion-weighted-mri-enables-to-accurately-grade-inflammatory-activity-in-patients-of-ileocolonic-crohn-s-disease-results-from-an-observational-study
#10
Xue-Hua Li, Can-Hui Sun, Ren Mao, Si-Yun Huang, Zhong-Wei Zhang, Xu-Feng Yang, Li Huang, Jin-Jiang Lin, Jian Zhang, Shomron Ben-Horin, Shi-Ting Feng, Min-Hu Chen, Zi-Ping Li
BACKGROUND: Diffusion-weighted imaging (DWI) is a novel technique to evaluate bowel inflammation in Crohn's disease (CD). It remains unclear whether DWI could differentiate grades of inflammation activity and add to the accuracy of conventional magnetic resonance enterography (MRE) in defining disease activity. We aimed to assess the accuracy of DWI for evaluating ileocolonic CD inflammation compared with conventional MRE, using ileocolonoscopy as reference standard. METHODS: This was an observational study of CD patients who underwent both ileocolonoscopy and MRE with DWI...
January 10, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28079261/effect-of-parthanatos-on-ropivacaine-induced-damage-in-sh-sy5y-cells
#11
Ting Zheng, Chun-Ying Zheng, Xiao-Chun Zheng, Ruo-Guang Zhao, Yan-Qing Chen
Ropivacaine is one of the most common but toxic local anesthetics, and the mechanisms underlying its neurotoxicity are still largely unknown. This study was conducted to prepare a ropivacaine-induced neuronal injury model and research the effects of ropivacaine on PARP-1 activation and NAD(+) depletion. The cell death and apoptosis of ropivacaine-induced SH-SY5Y cells were detected with flow cytometry. The lactate dehydrogenase cycling reaction measured the NAD(+) level, and Western blots were used to analyze the expression levels of PARP-1 and AIF after ropivacaine treatments with different concentrations and durations...
January 12, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28079165/oriented-and-ordered-biomimetic-remineralization-of-the-surface-of-demineralized-dental-enamel-using-hap-acp-nanoparticles-guided-by-glycine
#12
Haorong Wang, Zuohui Xiao, Jie Yang, Danyang Lu, Anil Kishen, Yanqiu Li, Zhen Chen, Kehua Que, Qian Zhang, Xuliang Deng, Xiaoping Yang, Qing Cai, Ning Chen, Changhong Cong, Binbin Guan, Ting Li, Xu Zhang
Achieving oriented and ordered remineralization on the surface of demineralized dental enamel, thereby restoring the satisfactory mechanical properties approaching those of sound enamel, is still a challenge for dentists. To mimic the natural biomineralization approach for enamel remineralization, the biological process of enamel development proteins, such as amelogenin, was simulated in this study. In this work, carboxymethyl chitosan (CMC) conjugated with alendronate (ALN) was applied to stabilize amorphous calcium phosphate (ACP) to form CMC/ACP nanoparticles...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28077666/motor-plan-differs-for-young-and-older-adults-during-similar-movements
#13
Agostina Casamento Moran, Yen-Ting Chen, Neha Lodha, Basma Yacoubi, Evangelos A Christou
Older adults exhibit altered activation of the agonist and antagonist muscles during goal-directed movements compared with young adults. However, it remains unclear whether the differential activation of the antagonistic muscles in older adults results from an impaired motor plan or an altered ability of the muscle to contract. The purpose of this study, therefore, was to determine whether the motor plan differs for young and older adults. Ten young (26.1 ± 4.3 yrs, 4 females) and sixteen older (71.9 ± 6...
January 11, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28077636/klebsiella-phage-%C3%AE-k64-1-encodes-multiple-depolymerases-for-multiple-host-capsular-types
#14
Yi-Jiun Pan, Tzu-Lung Lin, Ching-Ching Chen, Yun-Ting Tsai, Yi-Hsiang Cheng, Yi-Yin Chen, Pei-Fang Hsieh, Yi-Tsung Lin, Jin-Town Wang
: The genome of the multi-host bacteriophage ΦK64-1, capable of infecting Klebsiella capsular types K1, K11, K21, K25, K30, K35, K64, and K69, as well as new capsular types KN4 and KN5 was analyzed and revealed that 11 genes (S1-1, S1-2, S1-3, S2-1, S2-2, S2-3, S2-4, S2-5, S2-6, S2-7, and S2-8) encode proteins with amino acid sequence similarity to tail fibers/spikes or lyases. S2-5 previously was shown to encode a K64 capsule depolymerase (K64dep). Specific capsule-degrading activities of an additional 8 putative capsule depolymerases (S2-4 against K1; S1-1 against K11; S1-3 against K21; S2-2 against K25; S2-6 against K30/K69; S2-3 against K35; S1-2 against KN4; S2-1 against KN5) was demonstrated by expression and purification of the recombinant proteins...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28077597/muscle-developmental-defects-in-heterogeneous-nuclear-ribonucleoprotein-a1-knockout-mice
#15
Ting-Yuan Liu, Yu-Chia Chen, Yuh-Jyh Jong, Huai-Jen Tsai, Chien-Chin Lee, Ya-Sian Chang, Jan-Gowth Chang, Yung-Fu Chang
Heterogeneous ribonucleoprotein A1 (hnRNP A1) is crucial for regulating alternative splicing. Its integrated function within an organism has not, however, been identified. We generated hnRNP A1 knockout mice to study the role of hnRNP A1 in vivo The knockout mice, hnRNP A1(-/-), showed embryonic lethality because of muscle developmental defects. The blood pressure and heart rate of the heterozygous mice were higher than those of the wild-type mice, indicating heart function defects. We performed mouse exon arrays to study the muscle development mechanism...
January 2017: Open Biology
https://www.readbyqxmd.com/read/28077437/sensitized-signalling-between-l-type-ca2-channels-and-ryanodine-receptors-in-the-absence-or-inhibition-of-fkbp12-6-in-cardiomyocytes
#16
Yan-Ting Zhao, Yun-Bo Guo, Lei Gu, Xue-Xin Fan, Hua-Qian Yang, Zheng Chen, Peng Zhou, Qi Yuan, Guang-Ju Ji, Shi-Qiang Wang
AIMS: The heart contraction is controlled by the Ca(2+)-induced Ca(2+ )release (CICR) between L-type Ca(2+ )channels and ryanodine receptors (RyRs). The FK506-binding protein FKBP12.6 binds to RyR subunits, but its role in stabilizing RyR function has been debated for long. Recent reports of high-resolution RyR structure show that the HD2 domain that binds to the SPRY2 domain of neighbouring subunit in FKBP-bound RyR1 is detached and invisible in FKBP-null RyR2. The present study was to test the consequence of FKBP12...
January 10, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28075552/nanoparticles-coated-with-neutrophil-membranes-can-effectively-treat-cancer-metastasis
#17
Ting Kang, Qianqian Zhu, Dan Wei, Jingxian Feng, Jianhui Yao, Tianze Jiang, Qingxiang Song, Xunbin Wei, Hong-Zhuan Chen, Xiaoling Gao, Jun Chen
The dissemination, seeding and colonization of circulating tumor cells (CTC) serves as the root of distant metastasis. As a key step in the early stage of metastasis formation, colonization of CTC in the (pre-) metastatic niche appears to be a valuable target. Evidence showed that inflammatory neutrophils possess both CTC- and niche-targeting property by the intrinsic cell adhesion molecules on neutrophils. Inspired by this mechanism, we developed a nanosize neutrophil-mimicking drug delivery system (NM-NP) by coating neutrophils membranes on the surface of poly (latic-co-glycolic acid) nanoparticles (NP)...
January 11, 2017: ACS Nano
https://www.readbyqxmd.com/read/28075010/stimulatory-actions-of-a-novel-thiourea-derivative-on-large-conductance-calcium-activated-potassium-channels
#18
Sheng-Nan Wu, Jyh-Haur Chern, Santai Shen, Hwei-Hisen Chen, Ying-Ting Hsu, Chih-Chin Lee, Ming-Huan Chan, Ming-Chi Lai, Feng-Shiun Shie
AIM: In this study, we examine whether an anti-inflammatory thiourea derivative, compound #326, actions on ion channels. METHODS: The effects of compound #326 on Ca(2+) -activated K(+) channels were evaluated by patch-clamp recordings obtained in cell-attached, inside-out or whole-cell configuration. RESULTS: In pituitary GH3 cells, compound #326 increased the amplitude of Ca(2+) -activated K(+) currents (IK(Ca) ) with an EC50 value of 11...
January 11, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28074479/gdf8-inhibits-bone-formation-and-promotes-bone-resorption-in-mice
#19
Yu-Si Chen, Qi Guo, Li-Juan Guo, Ting Liu, Xian-Ping Wu, Zhang-Yuan Lin, Hong-Bo He, Tie-Jian Jiang
Growth Differentiation Factor 8 (GDF8), also called myostatin, is a member of the transforming growth factor (TGF)-β super-family. As a negative regulator of skeletal muscle growth, GDF8 is also associated with bone metabolism. However, the function of GDF8 in bone metabolism is not fully understood. Our study aimed to investigate the role of GDF8 in bone metabolism, both in vitro and in vivo. Our results showed that GDF8 had a negative regulatory effect on primary mouse osteoblasts, and promoted receptor activator of nuclear factor κB ligand (RANKL)-induced osteoclastogenesis in vitro...
January 11, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28074432/stereo-and-region-specific-biotransformation-of-physapubescin-by-four-fungal-strains
#20
Chongyue Qiu, Ting Yuan, Dejuan Sun, Suyu Gao, Lixia Chen
Biotransformations of physapubescin (1) were performed by four fungal strains-Mucor subtilissimus AS 3.2454, Mucor polymorphosporus AS 3.3443, Aspergillus niger AS 3.795, and Syncephalastrum racemosum AS 3.264. Four metabolites were prepared in the biotransformation process of 1, and their structures were elucidated as 15α-acetoxy-5,6β:22,26:24,25-triepoxy-26α-hydroxy-3β-methoxy 4β-hydroxyergost-1-one (2), 15α-acetoxy-5,6β:22,26-diepoxy-4β,24β,25α,26(α, β)-tetrahydroxyergost-3β-methoxy-1-one (3a/3b), 15α-acetoxy-5,6β:22,26-diepoxy-4β,24β,25α,26(α, β)-tetrahydroxyergost-2-en-1-one (4a/4b), and physapubescin D (5), by spectroscopic data analysis...
January 10, 2017: Journal of Natural Medicines
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