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https://www.readbyqxmd.com/read/28109176/oncogenic-roles-of-smarcb1-ini1-and-its-deficient-tumors
#1
Kenichi Kohashi, Yoshinao Oda
SMARCB1/INI1 is one of the core subunit proteins of the ATP-dependent SWI/SNF chromatin remodeling complex, and is identified as a potent and bona fide tumor suppressor. Interactions have been demonstrated between SMARCB1/INI1 and key proteins in various pathways related to tumor proliferation and progression: the p16-RB pathway, WNT signaling pathway, sonic hedgehog signaling pathway and Polycomb pathway. Initially, no detectable SMARCB1/INI1 protein expression was found in malignant rhabdoid tumor cells, whereas all other kinds of tumor cells and non-tumorous tissue showed SMARCB1/INI1 protein expression...
January 21, 2017: Cancer Science
https://www.readbyqxmd.com/read/28108221/sirtuin-1-independent-effects-of-resveratrol-in-ins-1e-%C3%AE-cells
#2
Cihan S Erdogan, Mathias Mørup-Lendal, Louise T Dalgaard, Ole Vang
Resveratrol (Resv), a natural polyphenol, is suggested to have various health benefits including improved insulin sensitivity. Resv activates Sirtuin (Sirt1) in several species and tissues. Sirt1 is a protein deacetylase with an important role in ageing, metabolism and β-cell function. In insulinoma β-cells (INS-1E), Resv is previously shown to improve glucose-stimulated insulin secretion in a Sirt1-dependent mechanism and to protect against β-cell dedifferentiation in non-human primates, while inducing hypertrophy in myoblasts...
January 17, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28107769/the-transcriptional-modulator-ifrd1-controls-pgc-1%C3%AE-expression-under-short-term-adrenergic-stimulation-in-brown-adipocytes
#3
Gyujin Park, Tetsuhiro Horie, Takashi Kanayama, Kazuya Fukasawa, Takashi Iezaki, Yuki Onishi, Kakeru Ozaki, Yukari Nakamura, Yukio Yoneda, Takeshi Takarada, Eiichi Hinoi
Sympathetic tone activates the function of classical brown adipocytes, which constitutively exist in the brown adipose tissue, and inducible brown adipocytes (so-called beige adipocytes), which sporadically reside within the white adipose tissue. Here we identified the transcriptional modulator interferon-related developmental regulator 1 (Ifrd1) as a negative regulator of thermogenic and mitochondrial gene expression in brown adipocytes. Ifrd1 expression was markedly induced by cold exposure and administration of CL-316243 (a β3 adrenergic agonist) in interscapular brown adipose and inguinal subcutaneous white adipose tissues, but not in epididymal visceral white adipose tissue, in vivo...
January 20, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28107625/gold-nanoshell-mediated-remote-myotube-activation
#4
Attilio Marino, Satoshi Arai, Yanyan Hou, Andrea Degl'Innocenti, Valentina Cappello, Barbara Mazzolai, Young-Tae Chang, Virgilio Mattoli, Madoka Suzuki, Gianni Ciofani
Mild heat stimulation of muscle cells within the physiological range represents an intriguing approach for the modulation of their functions. In this work, photothermal conversion was exploited to remotely stimulate striated muscle cells by using gold nanoshells (NS) in combination with near-infrared (NIR) radiation. Temperature increments of approximately 5°C were recorded by using an intracellular fluorescent molecular thermometer and were demonstrated to efficiently induce myotube contraction. The mechanism at the base of this phenomenon was thoroughly investigated and was observed to be a Ca2+-independent event directly involving actin-myosin interactions...
January 20, 2017: ACS Nano
https://www.readbyqxmd.com/read/28106280/erk1-directly-interacts-with-jnk1-leading-to-regulation-of-jnk1-c-jun-activity-and-cell-transformation
#5
Bong Seok Kang, Yoon Jin Hwang, Zigang Dong
ERK1 and ERK2 share a great deal of homology and have been presumed to have similar functions. Available antibodies recognize both isoforms making the elucidation of functional differences challenging. Mitogen-activated protein (MAP) kinase networks are commonly depicted in the literature as linear and sequential phosphorylation cascades; however, the activation of these pathways is not mutually exclusive. Little doubt exists that MAP kinases engage in crosstalk, but the extent or the direct effect of these "conversations" is unclear...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28105929/a-compendium-of-human-genes-regulating-feeding-behavior-and-body-weight-its-functional-characterization-and-identification-of-gwas-genes-involved-in-brain-specific-ppi-network
#6
Elena V Ignatieva, Dmitry A Afonnikov, Olga V Saik, Evgeny I Rogaev, Nikolay A Kolchanov
BACKGROUND: Obesity is heritable. It predisposes to many diseases. The objectives of this study were to create a compendium of genes relevant to feeding behavior (FB) and/or body weight (BW) regulation; to construct and to analyze networks formed by associations between genes/proteins; and to identify the most significant genes, biological processes/pathways, and tissues/organs involved in BW regulation. RESULTS: The compendium of genes controlling FB or BW includes 578 human genes...
December 22, 2016: BMC Genetics
https://www.readbyqxmd.com/read/28105525/characterization-of-the-cell-polarity-gene-crumbs-during-the-early-development-and-maintenance-of-the-squid-vibrio-light-organ-symbiosis
#7
Suzanne M Peyer, Elizabeth A C Heath-Heckman, Margaret J McFall-Ngai
The protein Crumbs is a determinant of apical-basal cell polarity and plays a role in apoptosis of epithelial cells and their protection against photodamage. Using the squid-vibrio system, a model for development of symbiotic partnerships, we examined the modulation of the crumbs gene in host epithelial tissues during initiation and maintenance of the association. The extracellular luminous symbiont Vibrio fischeri colonizes the apical surfaces of polarized epithelia in deep crypts of the Euprymna scolopes light organ...
January 20, 2017: Development Genes and Evolution
https://www.readbyqxmd.com/read/28105216/identification-of-potential-therapeutic-targets-for-colorectal-cancer-by-bioinformatics-analysis
#8
Ming Yan, Maomin Song, Rixing Bai, Shi Cheng, Wenmao Yan
The aim of the present study was to identify potential therapeutic targets for colorectal cancer (CRC). The gene expression profile GSE32323, containing 34 samples, including 17 specimens of CRC tissues and 17 of paired normal tissues from CRC patients, was downloaded from the Gene Expression Omnibus database. Following data preprocessing using the Affy and preprocessCore packages, the differentially-expressed genes (DEGs) between the two types of samples were identified with the Linear Models for Microarray Analysis package...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105175/analysis-of-transcription-profile-to-reveal-altered-signaling-pathways-following-the-overexpression-of-human-desumoylating-isopeptidase-2-in-pancreatic-cancer-cells
#9
Yu-Yin Fu, Yu-Huan Kang, Cong-Cong Shen, Rui-Xue Wang, Lin Yu, Xin-Yue Li, Dan-Dan Cui, Jin-Liang Yang, Yu-Qin Yao, Lan-Tu Gou
Human desumoylating isopeptidase 2 (DESI-2) is a member of the DESI family and contains a conserved PPPDE1 domain. Previous studies have demonstrated that DESI-2 overexpression may induce cell apoptosis. In the present study, differentially expressed genes were analyzed using a transcription microarray in DESI-2 overexpressing PANC-1 pancreatic cancer cells. A total of 45,033 genes were examined by microarray, which identified 1,766 upregulated and 1,643 downregulated genes. A series of altered signaling pathways were analyzed, in which certain essential signaling factors, including retinoid X receptor (RXR), BH3 interacting-domain death agonist, Ras homolog gene family member A (RhoA) and Rho-associated protein kinase, were further investigated at the protein level...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28104916/trpv1-activation-counters-diet-induced-obesity-through-sirtuin-1-activation-and-prdm-16-deacetylation-in-brown-adipose-tissue
#10
P Baskaran, V Krishnan, K Fettel, P Gao, Z Zhu, J Ren, B Thyagarajan
BACKGROUND/OBJECTIVE: An imbalance between energy intake and expenditure leads to obesity. Increasing metabolism and thermogenesis in brown adipose tissue (BAT) can help in overcoming obesity. Here, we investigated the effect of activation of transient receptor potential vanilloid subfamily 1 (TRPV1) in the upregulation of thermogenic proteins in BAT to counter diet-induced obesity. SUBJECTS/METHODS: We investigated the effect of dietary supplementation of capsaicin (TRPV1 agonist) on the expression of metabolically important thermogenic proteins in BAT of wild type and TRPV1(-/-) mice that received either a normal chow or high fat (±capsaicin; TRPV1 activator) diet by immunoblotting...
January 20, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28104913/exosome-derived-micrornas-in-cancer-metabolism-possible-implications-in-cancer-diagnostics-and-therapy
#11
REVIEW
Marco Tomasetti, Wan Lee, Lory Santarelli, Jiri Neuzil
Malignant progression is greatly affected by dynamic cross-talk between stromal and cancer cells. Exosomes are secreted nanovesicles that have key roles in cell-cell communication by transferring nucleic acids and proteins to target cells and tissues. Recently, MicroRNAs (miRs) and their delivery in exosomes have been implicated in physiological and pathological processes. Tumor-delivered miRs, interacting with stromal cells in the tumor microenvironment, modulate tumor progression, angiogenesis, metastasis and immune escape...
January 20, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28104696/systematic-characterization-of-human-testis-specific-actin-capping-protein-%C3%AE-3-as-a-possible-biomarker-for-male-infertility
#12
T Soda, Y Miyagawa, N Ueda, K Takezawa, H Okuda, S Fukuhara, K Fujita, H Kiuchi, M Uemura, Y Okamoto, A Tsujimura, H Tanaka, N Nonomura
STUDY QUESTION: Is actin capping protein (CP) β3 involved in human spermatogenesis and male infertility? SUMMARY ANSWER: Human CPβ3 (hCPβ3) is expressed in testis, changes its localization dynamically during spermatogenesis, and has some association with male infertility. WHAT IS KNOWN ALREADY: The testis-specific α subunit of CP (CPα3) was previously identified in human, and mutations in the cpα3 gene in mouse were shown to induce malformation of the sperm head and male infertility...
January 18, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28104103/comparative-proteomic-analysis-of-bleomycin-induced-pulmonary-fibrosis-based-on-isobaric-tag-for-quantitation
#13
Tiejun Yang, Yanlong Jia, Yongkang Ma, Liang Cao, Xiaobing Chen, Baoping Qiao
BACKGROUND: Pulmonary fibrosis (PF) is a destructive pulmonary disease and the molecular mechanisms underlying PF are unclear. This study investigated differentially expressed proteins associated with the occurrence and development of PF in rat lung tissue with bleomycin-induced PF. METHODS: Sixteen Sprague-Dawley rats were randomly divided into 2 groups: the PF model group (n = 8) and the control group (n = 8). After successfully establishing the rat PF model induced by bleomycin, the differentially expressed proteins in the 2 groups were identified through isobaric tag for relative and absolute quantitation coupled with liquid chromatography-mass spectrometry and bioinformatics analysis...
January 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28103756/compression-induced-chondrogenic-differentiation-of-embryonic-stem-cells-in-3-d-pdms-scaffolds
#14
Christina McKee, Yifeng Hong, Donggang Yao, G Rasul Chaudhry
Embryonic stem cells (ESCs) are an ideal source for chondrogenic progenitors for the repair of damaged cartilage tissue. It is currently difficult to induce uniform and scalable ESC differentiation in vitro, a process required for stem cell therapy. This is partly because stem cell fate is determined by complex interactions with the native microenvironment and mechanical properties of the extracellular matrix. Mechanical signaling is considered to be one of the major factors regulating the proliferation and differentiation of chondrogenic cells both in vitro and in vivo...
January 19, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28103316/alpha-melanocyte-stimulating-hormone-protects-against-cytokine-induced-barrier-damage-in-caco-2-intestinal-epithelial-monolayers
#15
Judit Váradi, András Harazin, Ferenc Fenyvesi, Katalin Réti-Nagy, Péter Gogolák, György Vámosi, Ildikó Bácskay, Pálma Fehér, Zoltán Ujhelyi, Gábor Vasvári, Eszter Róka, David Haines, Mária A Deli, Miklós Vecsernyés
Alpha-melanocyte-stimulating hormone (α-MSH) is a potent anti-inflammatory peptide with cytoprotective effect in various tissues. The present investigation demonstrates the ability of α-MSH to interact with intestinal epithelial cell monolayers and mitigate inflammatory processes of the epithelial barrier. The protective effect of α-MSH was studied on Caco-2 human intestinal epithelial monolayers, which were disrupted by exposure to tumor necrosis factor-α and interleukin-1β. The barrier integrity was assessed by measuring transepithelial electric resistance (TEER) and permeability for marker molecules...
2017: PloS One
https://www.readbyqxmd.com/read/28103293/synergistic-interaction-of-light-alcohol-administration-in-the-presence-of-mild-iron-overload-in-a-mouse-model-of-liver-injury-involvement-of-triosephosphate-isomerase-nitration-and-inactivation
#16
Wanxia Gao, Jie Zhao, Zhonghong Gao, Hailing Li
It is well known that iron overload promotes alcoholic liver injury, but the doses of iron or alcohol used in studies are usually able to induce liver injury independently. Little attention has been paid to the coexistence of low alcohol consumption and mild iron overload when either of them is insufficient to cause obvious liver damage, although this situation is very common among some people. We studied the interactive effects and the underlining mechanism of mild doses of iron and alcohol on liver injury in a mouse model...
2017: PloS One
https://www.readbyqxmd.com/read/28102082/characterization-of-the-molecular-mechanisms-underlying-the-chronic-phase-of-stroke-in-a-cynomolgus-monkey-model-of-induced-cerebral-ischemia
#17
Henry C H Law, Samuel S W Szeto, Quan Quan, Yun Zhao, Zaijun Zhang, Olga Krakovska, Leong Ting Lui, Chengyou Zheng, Simon Ming Yuen Lee, K W Michael Siu, Yuqiang Wang, Ivan K Chu
Stroke is one of the main causes of mortality and long-term disability worldwide. The pathophysiological mechanisms underlying this disease are not well understood, particularly in the chronic phase after the initial ischemic episode. In this study, a Macaca fascicularis stroke model consisting of two sample groups, as determined by MRI-quantified infarct volumes as a measure of the stroke severity 28 days after the ischemic episode, was evaluated using qualitative and quantitative proteomics analyses. By using multiple online multidimensional liquid chromatography platforms, 8790 non-redundant proteins that condensed to 5223 protein groups at 1% global false discovery rate (FDR)...
January 19, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28101211/receptor-fgfrl1-acts-as-a-tumor-suppressor-in-nude-mice-when-overexpressed-in-hek-293-tet-on-cells
#18
Lei Zhuang, Florian Steinberg, Beat Trueb
Fibroblast growth factor receptor-like 1 (FGFRL1) is a transmembrane receptor that interacts with heparin and FGF ligands. In contrast to the classical FGF receptors, FGFR1 to FGFR4, it does not appear to affect cell growth and proliferation. In the present study, an inducible gene expression system was utilized in combination with a xenograft tumor model to investigate the effects of FGFRL1 on cell adhesion and tumor formation. It was determined that recombinant FGFRL1 promotes the adhesion of HEK 293 Tet-On(®) cells in vitro...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28101157/functional-analysis-of-keratinocyte-and-fibroblast-gene-expression-in-skin-and-keloid-scar-tissue-based-on-deviation-analysis-of-dynamic-capabilities
#19
Mingming Li, Lei Wu
The aim of the present study was to select key genes that are associated with fibroblasts and keratinocytes during keloid scar progression and development. The gene expression profile of GSE44270, which includes 32 samples, was downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) in case samples compared with control samples were screened using the Limma R package followed by hierarchical clustering analysis. Protein-protein interaction (PPI) networks of the total selected DEGs were constructed using Cytoscape...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28100850/molecular-characteristic-and-physiological-role-of-dopa-decarboxylase
#20
Joanna Guenter, Robert Lenartowski
The enzyme DOPA decarboxylase (aromatic-L-amino-acid decarboxylase, DDC) plays an important role in the dopaminergic system and participates in the uptake and decarboxylation of amine precursors in the peripheral tissues. Apart from catecholamines, DDC catalyses the biosynthesis of serotonin and trace amines. It has been shown that the DDC amino acid sequence is highly evolutionarily conserved across many species. The activity of holoenzyme is regulated by stimulation/blockade of membrane receptors, phosphorylation of serine residues, and DDC interaction with regulatory proteins...
December 31, 2016: Postȩpy Higieny i Medycyny Doświadczalnej
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