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https://www.readbyqxmd.com/read/29156831/protective-effect-of-nsa-on-intestinal-epithelial-cells-in-a-necroptosis-model
#1
Wei Dong, Min Zhang, Yaxi Zhu, Yuanhan Chen, Xingchen Zhao, Ruizhao Li, Li Zhang, Zhiming Ye, Xingling Liang
Objective: This study aimed to investigate the protective effect of the necroptosis inhibitor necrosulfonamide (NSA) on intestinal epithelial cells using a novel in vitro necroptosis model that mimics inflammatory bowel disease (IBD). Methods: 2,4,6-trinitrobenzenesulfonic acid (TNBS) was perfused into the rectum of BALB/c mice to established a colitis model. Pathologic injury and cell death were evaluated. A novel in vitro model of necroptosis was established in Caco-2 cells using TNF-α and Z-VAD-fmk, and the cells were treated with or without NSA...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156814/screening-circular-rna-expression-patterns-following-focal-cerebral-ischemia-in-mice
#2
Cuiying Liu, Chencheng Zhang, Jian Yang, Xiaokun Geng, Huishan Du, Xunming Ji, Heng Zhao
Circular RNAs (circRNAs) have been demonstrated to act as microRNA (miRNA) sponges and they play important roles in regulating gene expression through a circRNA-miRNA-gene pathway. The specific roles of circRNAs in the pathogenesis of cerebral ischemia, however, are still unclear. Thus, the aim of this study is to determine circRNA expression profiles in the ischemic brain after stroke, which was induced by 45 min of transient middle cerebral artery occlusion (MCAO). The results from the circRNA microarrays revealed that 1027 circRNAs were significantly altered 48 hours after reperfusion in the ischemic brain compared with the sham group...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156804/hotair-regulates-hk2-expression-by-binding-endogenous-mir-125-and-mir-143-in-oesophageal-squamous-cell-carcinoma-progression
#3
Jian Ma, Yanxin Fan, Tingting Feng, Fangjun Chen, Zhipeng Xu, Suqing Li, Qingfeng Lin, Xiaoting He, Weihong Shi, Yang Liu, Xiufeng Cao, Bin Zhu, Zhihua Liu
Esophageal Squamous Cell Carcinoma (ESCC) is one of the most common malignant cancers worldwide with a high death rate worldwide. Long non-coding RNA (LncRNA) has been recently demonstrated to play a critical role in ESCC. LncRNA HOTAIR played important regulatory roles in ESCC. We highlight the molecular mechanisms by which HOTAIR could influence the expression of Hexokinase 2 (HK2) in ESCC through binding miR-125 and miR-143 directly. Taken together, this study identified a functional lncRNA HOTAIR involved with regulation of glycolysis via miRNA-125/miRNA-143-HK2 in ESCC cells...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156797/jq1-synergizes-with-the-bcl-2-inhibitor-abt-263-against-mycn-amplified-small-cell-lung-cancer
#4
Huogang Wang, Bo Hong, Xuemin Li, Ke Deng, Hong Li, Vivian Wai Yan Lui, Wenchu Lin
Small cell lung cancer (SCLC) is a clinically aggressive cancer with very poor prognosis. Amplification of MYC family genes and overexpression of Bcl-2 protein are common in SCLC, and they are likely therapeutic targets for SCLC. Previous clinical study showed that single agent targeting Bcl-2 with ABT-263 was of limited efficacy in SCLC. In this study, we demonstrated for the first time that co-targeting of N-Myc and Bcl-2 resulted in marked synergistic antitumor effects in MYCN-amplified SCLC. We found that MYCN-amplified SCLC cells were highly sensitive to a Bromodomain and Extra-Terminal domain (BET) inhibitor JQ1, which was able to inhibit N-Myc protein expression...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156789/xrcc1-mediated-the-development-of-cervival-cancer-through-a-novel-sp1-krox-20-swich
#5
Qingtao Meng, Shizhi Wang, Weiyan Tang, Shenshen Wu, Na Gao, Chengcheng Zhang, Xiaoli Cao, Xiaobo Li, Zhengdong Zhang, Michael Aschner, Hua Jin, Yue Huang, Rui Chen
Cervical cancer is the second leading cause of mortality among women. Impairment of the base excision repair (BER) pathway is one of the major causes of the initiation and progression of cervical cancer. However, whether the polymorphisms of the BER pathway components (i.e., HOGG1, XRCC1, ADPRT, and APE1) can affect the risk of cervical cancer remains unknown. Herein, we applied a hospital-based case-control study covering two independent cohorts and a subsequent functional assay to determine the roles of the single nucleotide polymorphisms (SNPs) of the BER pathway genes in cervical cancer...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156771/novel-post-transcriptional-and-post-translational-regulation-of-pro-apoptotic-protein-bok-and-anti-apoptotic-protein-mcl-1-determine-the-fate-of-breast-cancer-cells-to-survive-or-die
#6
Benjamin Onyeagucha, Panneerdoss Subbarayalu, Nourhan Abdelfattah, Subapriya Rajamanickam, Santosh Timilsina, Rosa Guzman, Carla Zeballos, Vijay Eedunuri, Sanjay Bansal, Tabrez Mohammad, Yidong Chen, Ratna K Vadlamudi, Manjeet K Rao
Deregulation of apoptosis is central to cancer progression and a major obstacle to effective treatment. The Bcl-2 gene family members play important roles in the regulation of apoptosis and are frequently altered in cancers. One such member is pro-apoptotic protein Bcl-2-related Ovarian Killer (BOK). Despite its critical role in apoptosis, the regulation of BOK expression is poorly understood in cancers. Here, we discovered that miR-296-5p regulates BOK expression by binding to its 3'-UTR in breast cancers...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156759/smoking-and-gender-modify-the-effect-of-twist-on-patient-survival-in-head-and-neck-squamous-carcinoma
#7
Yun Zhu, Wenjuan Zhang, Ping Wang
Purpose: TWIST is a critical factor for predicting prognosis in several human cancers. Here, we study the prognostic significance of TWIST1 and TWIST2 in Head and Neck squamous cell carcinoma (HNSCC) as well as interactions of TWISTs with both gender and smoking in patient survival. Methods: upper quartile normalized RNA-seq V2 RSEM values of TWIST1 and TWIST2 expressions were retrieved from a TCGA HNSCC dataset. Kaplan-Meier survival curves were used to assess the associations of TWIST1 and TWIST2 with patient survival, and multivariate Cox proportional hazards regression models were used to estimate the hazards ratios (HRs) and their 95% confidence intervals (CIs)...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156724/lncrna-pvt1-and-its-splicing-variant-function-as-competing-endogenous-rna-to-regulate-clear-cell-renal-cell-carcinoma-progression
#8
Tao Yang, Hui Zhou, Peijun Liu, Libin Yan, Weimin Yao, Ke Chen, Jin Zeng, Heng Li, Junhui Hu, Hua Xu, Zhangqun Ye
Long non-coding RNAs (lncRNAs) exert critical regulatory roles in the development and progression of several cancers. Plasmacytoma variant translocation 1 (PVT1), an lncRNA, was shown to be upregulated in clear cell renal cell carcinoma (ccRCC) in our study, while Kaplan-Meier curve and Cox regression analysis showed that high expression of PVT1 was associated with poor overall survival (OS) and disease free survival (DFS) in ccRCC patients. In vitro experiments revealed that PVT1 promoted renal cancer cell proliferation, migration, and invasion, while in vivo studies confirmed its oncogenic roles in ccRCC...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156715/connective-tissue-growth-factor-mediates-tgf-%C3%AE-1-induced-low-grade-serous-ovarian-tumor-cell-apoptosis
#9
Jung-Chien Cheng, Hsun-Ming Chang, Peter C K Leung
Ovarian low-grade serous carcinoma (LGSC) is a rare disease and is now considered to be a distinct entity from high-grade serous carcinoma (HGSC), which is the most common and malignant form of epithelial ovarian cancer. Connective tissue growth factor (CTGF) is a secreted matricellular protein that has been shown to modulate many biological functions by interacting with multiple molecules in the microenvironment. Increasing evidence indicates that aberrant expression of CTGF is associated with cancer development and progression...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156711/multiple-regulatory-aspects-of-histone-methyltransferase-ezh2-in-pb-induced-neurotoxicity
#10
Wei-Zhen Xue, Xiaozhen Gu, Yulan Wu, Danyang Li, Yi Xu, Hui-Li Wang
Pb is a pervasive environmental threat to human health. Although remarkable progress has been made in its neurotoxicity, the precise molecular mechanisms underlying this widespread toxicant still remain elusive. In this study, the detailed roles of EZH2, a transcriptional repressor, in the regulation of Pb-led neurotoxicity were investigated, highlighting its sub-functionalization, compartmentalization, functional chaperones and downstream partners. Based on the findings, EZH2's protein levels were significantly reduced in response to Pb treatment; EZH2's gain-of-function trials recovered the dampened neurite outgrowth; EZH2' recruitment to ploycomb complex, as well as its interaction with cytosolic Vav1, was altered in a distinct manner, suggesting that EZH2's multiple roles were markedly redistributed in this context; EZH2's cytosolic and nuclear presence differed in their respective response towards Pb treatment; EZH2 directly occupied the promoters of EGR2, NGFR and CaMKK2, genes responsible for various nerve functions and repair mechanisms, and essentially contributed to their aberrant expression...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156709/using-molecular-functional-networks-to-manifest-connections-between-obesity-and-obesity-related-diseases
#11
Jialiang Yang, Jing Qiu, Kejing Wang, Lijuan Zhu, Jingjing Fan, Deyin Zheng, Xiaodi Meng, Jiasheng Yang, Lihong Peng, Yu Fu, Dahan Zhang, Shouneng Peng, Haiyun Huang, Yi Zhang
Obesity is a primary risk factor for many diseases such as certain cancers. In this study, we have developed three algorithms including a random-walk based method OBNet, a shortest-path based method OBsp and a direct-overlap method OBoverlap, to reveal obesity-disease connections at protein-interaction subnetworks corresponding to thousands of biological functions and pathways. Through literature mining, we also curated an obesity-associated disease list, by which we compared the methods. As a result, OBNet outperforms other two methods...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156706/mkrn3-functions-as-a-novel-ubiquitin-e3-ligase-to-inhibit-nptx1-during-puberty-initiation
#12
Huifang Liu, Xiangxin Kong, Fengling Chen
Central precocious puberty (CPP) is attributed to the disorder of some trigger factors those can activate the hypothalamic-pituitary-gonadal axis controlled by GnRH neurons. Many recent studies reveal one of those trigger factors, Makorin ring finger protein 3 (Mkrn3), whose loss-of-function mutations are implicated in CPP. Although Mkrn3 contained zinc Ring finger domain is considered as a putative E3 ubiquitin ligase, its actual function is never reported. Here, our results demonstrated that in mice hypothalamus before and when puberty initiated, Mkrn3 expressed the reversed tendency with Nptx1, which is an important secreted protein for neuron development...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156701/association-of-breast-carcinoma-growth-with-a-non-canonical-axis-of-ifn%C3%AE-ido1-tsp1
#13
Bruno Lopes-Bastos, Liang Jin, Fiona Ruge, Sioned Owen, Andrew Sanders, Christopher Cogle, John Chester, Wen G Jiang, Jun Cai
Reciprocal interactions between cancers and the surrounding microenvironment have an important role in tumour evolution. In this study, our data suggested that through thrombospondin 1 (TSP1), tumour-associated microvessel provides a dormant niche to sustain inactive status of breast invasive ductal carcinoma (IDC) cells. TSP1 levels in the tumour stroma were negatively correlated with vascular indoleamine 2,3-dioxygenase 1 (IDO1) in IDC tissues. IDO1 is an intracellular enzyme initiating the first and rate-limited step of tryptophan breakdown...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156696/interaction-of-microrna-21-145-and-smad3-domain-specific-phosphorylation-in-hepatocellular-carcinoma
#14
Ji Yu Wang, Meng Fang, Alex Boye, Chao Wu, Jia Jun Wu, Ying Ma, Shu Hou, Yue Kan, Yan Yang
MicroRNAs 21 and 145 exhibit inverse expression in Hepatocellular carcinoma (HCC), but how they relate to Smad3 C-terminal and Link region phosphorylation (pSmad3C and pSmad3L) downstream of TGF-β/MAPK signaling, remains inconclusive. Our results suggest microRNA-145 targets Smad3 in HepG2 cells. Decreased tumor volume and increased apoptosis were produced in both microRNA-21 antagomir and microRNA-145 agomir groups compared to controls. Inhibition of TβRI and MAPK (ERK, JNK, and p38) activation respectively produced decreased microRNA-21 but increased microRNA-145 expression...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156637/synthesis-and-improved-cross-linking-properties-of-c5-modified-furan-bearing-pnas
#15
Joke Elskens, Alex Manicardi, Valentina Costi, Annemieke Madder, Roberto Corradini
Over the past decades, peptide nucleic acid/DNA (PNA:DNA) duplex stability has been improved via backbone modification, often achieved via introducing an amino acid side chain at the α- or γ-position in the PNA sequence. It was previously shown that interstrand cross-linking can further enhance the binding event. In this work, we combined both strategies to fine-tune PNA crosslinking towards single stranded DNA sequences using a furan oxidation-based crosslinking method; for this purpose, γ-l-lysine and γ-l-arginine furan-PNA monomers were synthesized and incorporated in PNA sequences via solid phase synthesis...
November 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29156635/is-school-type-associated-with-objectively-measured-physical-activity-in-15-year-olds
#16
Lovro Štefan, Maroje Sorić, Antonela Devrnja, Hrvoje Podnar, Marjeta Mišigoj-Duraković
The main aims of this study were: (1) to determine the objectively assessed physical activity (PA) patterns in urban 15-year-old male and female adolescents according to school type and (2) to assess the differences in PA between school days and weekend days. In this cross-sectional study, participants were 187 secondary-school male and female adolescents (61.4% females) attending grammar and vocational schools. Patterns of PA were objectively evaluated using a multi-sensor body monitor for 5 consecutive days...
November 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29156626/surface-plasmon-resonance-sensing-of-biorecognition-interactions-within-the-tumor-suppressor-p53-network
#17
REVIEW
Ilaria Moscetti, Salvatore Cannistraro, Anna Rita Bizzarri
Surface Plasmon Resonance (SPR) is a powerful technique to study the kinetics of biomolecules undergoing biorecognition processes, particularly suited for protein-protein interactions of biomedical interest. The potentiality of SPR was exploited to sense the interactions occurring within the network of the tumor suppressor p53, which is crucial for maintaining genome integrity and whose function is inactivated, mainly by down regulation or by mutation, in the majority of human tumors. This study includes p53 down-regulators, p53 mutants and also the p53 family members, p63 and p73, which could vicariate p53 protective function...
November 20, 2017: Sensors
https://www.readbyqxmd.com/read/29156607/calcium-dependent-protein-kinases-in-phytohormone-signaling-pathways
#18
REVIEW
Wuwu Xu, Wenchao Huang
Calcium-dependent protein kinases (CPKs/CDPKs) are Ca(2+)-sensors that decode Ca(2+) signals into specific physiological responses. Research has reported that CDPKs constitute a large multigene family in various plant species, and play diverse roles in plant growth, development, and stress responses. Although numerous CDPKs have been exhaustively studied, and many of them have been found to be involved in plant hormone biosynthesis and response mechanisms, a comprehensive overview of the manner in which CDPKs participate in phytohormone signaling pathways, regulating nearly all aspects of plant growth, has not yet been undertaken...
November 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29156605/performance-indices-in-wheat-chlorophyll-a-fluorescence-and-protein-quality-influenced-by-fhb
#19
Valentina Spanic, Marija Viljevac Vuletic, Georg Drezner, Zvonimir Zdunic, Daniela Horvat
Very little is known about the physiological interactions between wheat quality and Fusarium head blight (FHB), which substantially reduces wheat grain yield and quality worldwide. In order to investigate stress-induced changes in flag leaves from plants artificially inoculated with Fusarium, we screened for chlorophyll a fluorescence transient at 1, 2, 4, 7 and 14 days after Fusarium inoculation. Our results indicate that the maximum quantum yield of photochemistry (Fv/Fm) and the performance index (PI) were not affected by FHB, but there were significant differences in those two traits between different varieties and measurement times...
November 20, 2017: Pathogens
https://www.readbyqxmd.com/read/29156584/identification-of-physiological-substrates-and-binding-partners-of-the-plant-mitochondrial-protease-ftsh4-by-the-trapping-approach
#20
Magdalena Opalińska, Katarzyna Parys, Hanna Jańska
Maintenance of functional mitochondria is vital for optimal cell performance and survival. This is accomplished by distinct mechanisms, of which preservation of mitochondrial protein homeostasis fulfills a pivotal role. In plants, inner membrane-embedded i-AAA protease, FTSH4, contributes to the mitochondrial proteome surveillance. Owing to the limited knowledge of FTSH4's in vivo substrates, very little is known about the pathways and mechanisms directly controlled by this protease. Here, we applied substrate trapping coupled with mass spectrometry-based peptide identification in order to extend the list of FTSH4's physiological substrates and interaction partners...
November 18, 2017: International Journal of Molecular Sciences
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