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https://www.readbyqxmd.com/read/28528353/adrenomedullin-ameliorates-podocyte-injury-induced-by-puromycin-aminonucleoside-in-vitro-and-in-vivo-through-modulation-of-rho-gtpases
#1
Nan Dong, Lixia Meng, Ruqun Xue, Meng Yu, Zhonghua Zhao, Xueguang Liu
PURPOSE: Podocyte injury is a key event in proteinuric kidney disease and eventually glomerular scarring. While adrenomedullin (AM), a potent vasodilatory peptide, has been reported to confer renoprotection in several experimental models of kidney diseases, its effect on injured podocytes and the related mechanism is still largely unknown. METHODS: Employing Western blotting analysis, immunoprecipitation and immunofluorescence, we investigated the effects of AM on the expressions of podocyte cytoskeletal proteins and Rho-family small GTPases (Rho GTPases) in puromycin aminonucleoside (PAN)-induced podocyte injury, both in cultured podocytes and in PAN nephrosis rats...
May 20, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28526784/trpv4-mediates-the-calcium-influx-required-for-flightless-non-muscle-myosin-interaction-and-collagen-remodeling
#2
P D Arora, M Di Gregorio, P He, C A McCulloch
Collagen remodeling by phagocytosis requires cell extension formation, which in turn involves interaction of the actin binding protein Flightless I (FliI) with non-muscle myosin IIA (NMMIIA) at cell-matrix adhesion sites. As Ca(2+) plays a central role in controlling actomyosin-dependent functions, we examined how Ca(2+) controls the generation of cell extensions and collagen remodeling. Ratio fluorimetry demonstrated localized Ca(2+) influx at extensions of fibroblasts. Western Blotting and qPCR showed high expression levels of the Ca(2+)-permeable, Transient Receptor Potential Vanilloid-4 (TRPV4) channel, which co-immunoprecipitated with β1 integrin and localized to adhesions...
May 19, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28526413/tcr-crosslinking-promotes-crk-adaptor-protein-binding-to-tyrosine-phosphorylated-cd3%C3%AE-chain
#3
Guangyu Dong, Rachel Kalifa, Pulak Ranjan Nath, Sigal Gelkop, Noah Isakov
T cell antigen receptor (TCR) binding of a peptide antigen presented by antigen-presenting cells (APCs) in the context of surface MHC molecules initiates signaling events that regulate T cell activation, proliferation and differentiation. A key event in the activation process is the phosphorylation of the conserved tyrosine residues within the CD3 chain immunoreceptor tyrosine-based activation motifs (ITAMs), which operate as docking sites for SH2 domain-containing effector proteins. Phosphorylation of the CD3ζ ITAMs renders the CD3 chain capable of binding the ζ-chain associated protein 70 kDa (ZAP70), a protein tyrosine kinase that is essential for T cell activation...
May 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28522163/lncrna-malat1-sponges-mir-204-to-promote-osteoblast-differentiation-of-human-aortic-valve-interstitial-cells-through-up-regulating-smad4
#4
Xiaoxiong Xiao, Tingwen Zhou, Shichao Guo, Chao Guo, Qiao Zhang, Nianguo Dong, Yongjun Wang
BACKGROUND: Emerging evidences have indicated that long non-coding RNAs (lncRNAs) play vital roles in cardiovascular physiology and pathology. The lncRNA MALAT1, a highly abundant and conserved imprinted gene, has been implicated in many cardiovascular diseases. However, the function of MALAT1 in calcific aortic valve disease (CAVD) remains unknown. This study sought to document the function and underlying mechanism of MALAT1 in regulating CAVD. METHODS: Protein level was determined by immunoblotting and immunofluorescence staining...
May 10, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28513866/lncrna-ptcsc3-mir-574-5p-governs-cell-proliferation-and-migration-of-papillary-thyroid-carcinoma-via-wnt-%C3%AE-catenin-signaling
#5
Xiaoming Wang, Xiubo Lu, Zushi Geng, Guoyu Yang, Yang Shi
BACKGROUND: The distance metastases of papillary thyroid carcinoma (PTC) were a major threaten for PTC patients, thus, to study the potential mechanism for the treatment of PTC was essential. Previous studies have shown that PTCSC3 (Thyroid Carcinoma Susceptibility Candidate 3), miR-574-5p and Wnt/β-catenin were involved in PTC, but the potential pathogenic mechanism among them was still unclear. METHOD: Real-time PCR and western blot were used to detect genes expression...
May 17, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28505371/the-arm-domain-of-armadillo-repeat-kinesin-1-is-not-required-for-microtubule-catastrophe-but-can-negatively-regulate-nima-related-kinase-6-in-arabidopsis-thaliana
#6
Ryan C Eng, Laryssa S Halat, Samuel J Livingston, Tatsuya Sakai, Hiroyasu Motose, Geoffrey Wasteneys
Microtubules are dynamic filaments, the assembly and disassembly of which are under precise control of various associated proteins, including motor proteins and regulatory enzymes. In Arabidopsis thaliana, two such proteins are the ARMADILLO-REPEAT KINESIN 1 (ARK1), which promotes microtubule disassembly, and the NIMA-RELATED KINASE 6 (NEK6), which has a role in organizing microtubule arrays. Previous yeast 2-hybrid and in vitro pull-down assays determined that NEK6 can interact with ARK1 through the latter protein's Armadillo-repeat (ARM) cargo domain...
May 13, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28487382/nf45-and-nf90-nf110-coordinately-regulate-esc-pluripotency-and-differentiation
#7
Julia Ye, Hu Jin, Aleksandr Pankov, Jun Song, Robert Blelloch
While years of investigation have elucidated many aspects of embryonic stem cell (ESC) regulation, the contributions of post-transcriptional and translational mechanisms to the pluripotency network remain largely unexplored. In particular, little is known in ESCs about the function of RNA binding proteins (RBPs), the protein agents of post-transcriptional regulation. We performed an unbiased RNAi screen of RBPs in an ESC differentiation assay and identified two related genes, NF45 (Ilf2) and NF90/NF110 (Ilf3), whose knockdown promoted differentiation to an epiblast-like state...
May 9, 2017: RNA
https://www.readbyqxmd.com/read/28484601/wsv023-interacted-with-litopenaeus-vannamei-%C3%AE-tubulin-complex-associated-proteins-2-and-decreased-the-formation-of-microtubules
#8
Yihong Chen, Haitao Bi, Xiaoyun Li, Zezhi Zhang, Haitao Yue, Shaoping Weng, Jianguo He
A previous study found the key transcription factor of Litopenaeus vannamei PERK-eIF2α pathway cyclic AMP-dependent transcription factor 4 (LvATF4) was involved in the transcriptional regulation of white spot syndrome virus (WSSV) gene wsv023. Knocked-down expression of LvATF4 reduced the viral copy number and the cumulative mortality of WSSV-infected shrimp. These results suggested that wsv023 may be critical to WSSV infection but the precise function of wsv023 was still unknown. By using co-immunoprecipitation and pull-down assays, we show that wsv023 interacts with L...
April 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28483659/the-long-non-coding-rna-neat1-is-an-important-mediator-of-the-therapeutic-effect-of-bexarotene-on-traumatic-brain-injury-in-mice
#9
Jianjun Zhong, Li Jiang, Zhijian Huang, Hongrong Zhang, Chongjie Cheng, Han Liu, Junchi He, Jingchuan Wu, Rami Darwazeh, Yue Wu, Xiaochuan Sun
OBJECTIVE: Bexarotene treatments exert neuroprotective effects on mice following traumatic brain injury (TBI). The present study aims to investigate the potential roles of the long noncoding RNA Neat1 in the neuroprotective effects of bexarotene. MATERIALS AND METHODS: Adult male C57BL/6J mice (n=80) and newborn mice (within 24 h after birth) (n=20) were used to generate a "controlled cortical impact" (CCI) model and harvest primary cortex neurons, respectively...
May 5, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28477119/identification-of-atm-interacting-proteins-by-co-immunoprecipitation-and-glutathione-s-transferase-gst-pull-down-assays
#10
Amanda L Bain, Janelle L Harris, Kum Kum Khanna
The ATM kinase is a master regulator of the DNA damage response, and can interact with more than 700 proteins in response to DNA damage. These interactions play a critical role in fine-tuning the response of ATM to multiple cellular stressors, and can play both a positive or negative role in regulating its activity. Here, we detail using protein-protein interaction methods, including co-immunoprecipitation and Glutathione-S-transferase (GST) fusion protein pull-down assays to understand the molecular interactions of ATM...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28474572/lncrna-gm15290-promotes-cell-proliferation-and-invasion-in-non-small-cell-lung-cancer-through-directly-interacting-with-and-suppressing-the-tumor-suppressor-mir-615-5p
#11
Yu Dong, Xiaoying Huo, Ruiying Sun, Zhiyan Liu, Miaoyi Huang, Shuanying Yang
Long non-coding RNAs (lncRNAs) have been involved in occurrence and progression of multiple cancers. In this study, weinvestigated the role of lncRNA Gm15290 in the proliferation and invasion of non-small cell lung cancer (NSCLC) cells. First, we found that lncRNA Gm15290 was markedly upregulated in tumor tissues from NSCLC patients and NSCLC cell lines, compared with adjacent normal tissues and normal lung cell line HBE respectively. Then, different concentrations of pcDNA-Gm15290 expression vector and Gm15290 siRNA were respectively transfected into A549 NSCLC cells...
May 5, 2017: Oncology Research
https://www.readbyqxmd.com/read/28469961/long-non-coding-rna-ak093407-promotes-proliferation-and-inhibits-apoptosis-of-human-osteosarcoma-cells-via-stat3-activation
#12
Yongkun Wang, Tingting Liang, Yao Wang, Yan Huang, Ye Li
Osteosarcoma is a malignant tumor of the skeletal system. Long non-coding RNAs (lncRNAs) have been shown to play significant role in osteosarcoma. The present study evaluated the effects and mechanism of lncRNA AK093407 in osteosarcoma. The study included human osteosarcoma cell line, U-2OS. Cell proliferation, viability, and apoptosis were measured using Ki-67 proliferation assay, MTT assay, and Annexin V/PI staining assay, respectively. Relative mRNA and protein expressions were measured using qRT-PCR and western blot, respectively...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28469201/flagellar-hooks-and-hook-protein-flge-participate-in-host-microbe-interactions-at-immunological-level
#13
Ying Shen, Lin Chen, Meixiang Wang, Dandan Lin, Zhongjie Liang, Peiqing Song, Qing Yuan, Hua Tang, Weihua Li, Kangmin Duan, Baiyan Liu, Ge Zhao, Yiqiang Wang
Host-microbe interactions determine the outcome of host responses to commensal and pathogenic microbes. Previously, two epithelial cell-binding peptides were found to be homologues of two sites (B, aa168-174; F, aa303-309) in the flagellar hook protein FlgE of Pseudomonas aeruginosa. Tertiary modeling predicted these sites at the interface of neighboring FlgE monomers in the fully formed hook. Recombinant FlgE protein stimulated proinflammatory cytokine production in a human cell line and in murine lung organoid culture as detected with real-time RT-PCR and ELISA assays...
May 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28465355/tetramethylpyrazine-blocks-tfam-degradation-and-up-regulates-mitochondrial-dna-copy-number-by-interacting-with-tfam
#14
Linhua Lan, Miaomiao Guo, Yong Ai, Fuhong Chen, Ya Zhang, Lei Xia, Dawei Huang, Lili Niu, Ying Zheng, Carolyn Suzuki, Yihua Zhang, Yongzhang Liu, Bin Lu
The natural small molecule compound- 2,3,5,6-tetramethylpyrazine (TMP), is a major component of the Chinese medicine Chuanxiong, which has wide clinical applications for dilating blood vessels,  inhibiting platelet aggregation and treating thrombosis. Recent work suggests that TMP is also an anti-tumor agent. Despite its chemotherapeutic potential, the mechanism(s) underlying TMP action are unknown. Herein, we demonstrate that TMP binds to mitochondrial transcription factor A (TFAM) and blocks its degradation by the mitochondrial Lon protease...
May 2, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28464377/bile-salts-and-alkaline-ph-reciprocally-modulate-the-interaction-between-the-periplasmic-domains-of-vibrio-cholerae-toxr-and-toxs
#15
Charles R Midgett, Salvador Almagro-Moreno, Maria Pellegrini, Ronald K Taylor, Karen Skorupski, F Jon Kull
ToxR is a transmembrane transcription factor that is essential for virulence gene expression and human colonization by Vibrio cholerae. ToxR requires its operon partner ToxS, a periplasmic integral membrane protein, for full activity. These two proteins are thought to interact through their respective periplasmic domains, ToxRp and ToxSp. In addition, ToxR is thought to be responsive to various environmental cues, such as bile salts and alkaline pH, but how these factors influence ToxR is not yet understood...
May 2, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28463794/lncrna-meg3-inhibits-cell-epithelial-mesenchymal-transition-by-sponging-mir-421-targeting-e-cadherin-in-breast-cancer
#16
Wei Zhang, Shenghong Shi, Jing Jiang, Xujun Li, Hongfeng Lu, Feng Ren
BACKGROUND: MEG3, a lncRNA, has been verified in several tumors to function as tumor suppressors including breast cancer development and progression, however, the expression pattern and underlying mechanisms of MEG3 involved in breast cancer progression is still need to be further explored. METHODS: The expression of MEG3 was confirmed in 90 cases of breast cancer tissues compared to adjacent normal tissues by quantitative real-time polymerase chain reaction (qRT-PCR) analysis...
April 29, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28455790/advanced-glycation-end-products-attenuate-the-function-of-tumor-necrosis-factor-like-weak-inducer-of-apoptosis-to-regulate-the-inflammatory-response
#17
Masahiro Watanabe, Takao Toyomura, Hidenori Wake, Keyue Liu, Kiyoshi Teshigawara, Hideo Takahashi, Masahiro Nishibori, Shuji Mori
Advanced glycation end products (AGEs) are formed from the non-enzymatic glycation reaction of reducing sugars or their metabolites with the free amino groups of several biomolecules and are known to play pathophysiological roles in various inflammatory diseases. In an earlier study, it was suggested that tumor necrosis factor-like weak inducer of apoptosis (TWEAK) has a unique role to regulate the tumor necrosis factor α (TNFα)-induced inflammatory response. In this study, we investigated the effect of the AGEs-TWEAK interaction on proinflammatory signaling responses in endothelial cells and the influence of AGEs on the cellular function of TWEAK in the inflammatory process...
April 28, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28454656/selection-and-identification-of-specific-glycoproteins-and-glycan-biomarkers-of-macrophages-involved-in-mycobacterium-tuberculosis-infection
#18
Xiao-Lei Tang, Chun-Hui Yuan, Quanquan Ding, Yidan Zhou, Qin Pan, Xiao-Lian Zhang
Macrophages are the primary host target cells of Mycobacterium tuberculosis (M.tb). However, little is known about the changes of membrane glycopatterns of macrophages in response to M. tb infection. Using lectin microarrays we compared the differential expression of glycopatterns of macrophages upon stimulation with the heat-inactivated virulent M.tb H37Rv or attenuate M.tb H37Ra. We found that widespread alteration of macrophage membrane glycopatterns were induced by the heat-inactivated virulent M. tb H37Rv, as shown by the significantly changed binding abilities of 11 lectins (sugar binding proteins) among 40 lectins tested...
May 2017: Tuberculosis
https://www.readbyqxmd.com/read/28440563/the-sumo-e3-ligase-mdsiz1-promotes-anthocyanin-accumulation-by-sumoylating-mdmyb1-under-low-temperature-conditions-in-apple
#19
Li-Jie Zhou, Yuan-Yuan Li, Rui-Fen Zhang, Chun-Ling Zhang, Xing-Bin Xie, Cheng Zhao, Yu-Jin Hao
MdMYB1 acts as a crucial component of the MYB-bHLH-WD40 (MBW) complex to regulate anthocyanin biosynthesis in red-skinned apples (Malus domestica), but little is known about its posttranslational regulation. Here, a SUMO E3 ligase MdSIZ1 was screened out as an MdMYB1-interacting protein with a yeast two-hybridization approach. The interaction between MdSIZ1 and MdMYB1 was further verified with pull-down and CoIP assays. Furthermore, it was found that MdSIZ1 directly sumoylated MdMYB1 proteins in vivo and in vitro, especially under moderately low temperature (17 °C) conditions, and that this sumoylation was required for MdMYB1 protein stability...
April 25, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28439037/regulation-of-a-glycerol-induced-quinoprotein-alcohol-dehydrogenase-by-%C3%AF-54-and-a-luxr-type-regulator-in-azospirillum-brasilense-sp7
#20
Vijay Shankar Singh, Ashutosh Prakash Dubey, Ankush Gupta, Sudhir Singh, Bhupendra Narain Singh, Anil Kumar Tripathi
Azospirillum brasilense Sp7 uses glycerol as carbon source for growth and nitrogen fixation. When grown in medium containing glycerol as carbon source it upregulates the expression of a protein which was identified as quinoprotein alcohol dehydrogenase (ExaA). Inactivation of exaA adversely affects the growth of A. brasilense on glycerol. Determination of the transcription start site of exaA revealed an RpoN dependent -12/-24 promoter consensus. The expression of an exaA:lacZ fusion was induced maximally by glycerol, and was dependent on σ(54) Bioinformatic analysis of the sequence flanking the -12/-24 promoter revealed a 17 bp sequence motif with a dyad symmetry of 6 nucleotides upstream of the promoter, disruption of which caused a drastic reduction in promoter activity...
April 24, 2017: Journal of Bacteriology
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