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https://www.readbyqxmd.com/read/29663368/a-peptide-that-blocks-the-interaction-of-nf-%C3%AE%C2%BAb-p65-subunit-with-smad4-enhances-bmp2-induced-osteogenesis
#1
Mariko Urata, Shoichiro Kokabu, Takuma Matsubara, Goro Sugiyama, Chihiro Nakatomi, Hiroshi Takeuchi, Shizu Hirata-Tsuchiya, Kazuhiro Aoki, Yukihiko Tamura, Yasuko Moriyama, Yasunori Ayukawa, Miho Matsuda, Min Zhang, Kiyoshi Koyano, Chiaki Kitamura, Eijiro Jimi
Bone morphogenetic protein (BMP) potentiates bone formation through the Smad signaling pathway in vitro and in vivo. The transcription factor nuclear factor κB (NF-κB) suppresses BMP-induced osteoblast differentiation. Recently, we identified that the transactivation (TA) 2 domain of p65, a main subunit of NF-κB, interacts with the mad homology (MH) 1 domain of Smad4 to inhibit BMP signaling. Therefore, we further attempted to identify the interacting regions of these two molecules at the amino acid level...
April 16, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29626331/in-silico-design-of-polycationic-antimicrobial-peptides-active-against-pseudomonas-aeruginosa-and-staphylococcus-aureus
#2
Oscar Hincapié, Paula Giraldo, Sergio Orduz
Antimicrobial peptides (AMPs) have the potential to become valuable antimicrobial drugs in the coming years, since they offer wide spectrum of action, rapid bactericidal activity, and low probability for resistance development in comparison with traditional antibiotics. The search and improvement of methodologies for discovering new AMPs to treat resistant bacteria such as Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii and Pseudomonas aeruginosa are needed for further development of antimicrobial products...
April 6, 2018: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29566125/the-roles-of-id-1-in-human-pancreatic-ductal-adenocarcinoma-and-the-therapeutic-effects-of-2-methoxyestradiol
#3
Lie Yao, Xiang Zou, Chen Jin, Jie Fan, Zhongyi Guo, Quanjun Lin, Ji Li, Deliang Fu
Pancreatic ductal adenocarcinoma (PDAC) has poor prognosis and high mortality rate. Inhibitor of differentiation-1 (ID-1) overexpression has already been reported to be associated with low survival, but the detailed roles of ID-1 in PDAC are unclear. As an ID-1 inhibitor, 2-methoxyestradiol (2-ME) has been shown effective in the anti-tumor therapies, but its effect on PDAC is unknown. In this study, ID-1 overexpression and knockdown stable SW1990 cells were used to examine proliferation, migration and invasion abilities...
March 16, 2018: Carcinogenesis
https://www.readbyqxmd.com/read/29545164/interaction-between-orexin-a-and-bone-morphogenetic-protein-system-on-progesterone-biosynthesis-by-rat-granulosa-cells
#4
Shiho Fujita, Toru Hasegawa, Yuki Nishiyama, Satoshi Fujisawa, Yasuhiro Nakano, Takahiro Nada, Nahoko Iwata, Yasuhiko Kamada, Hisashi Masuyama, Fumio Otsuka
The involvement of orexins in reproductive function has been gradually uncovered. However, the functional role of orexins in ovarian steroidogenesis remains unclear. In the present study, we investigated the effects of orexin A on ovarian steroidogenesis by using rat primary granulosa cells that express both OX1 and OX2 receptors for orexins. Treatment with orexin A enhanced progesterone, but not estradiol, biosynthesis induced by FSH, whereas it did not affect basal levels of progesterone or estradiol. In accordance with the effects on steroidogenesis, orexin A increased the mRNA levels of progesterogenic enzymes, including StAR, P450scc and 3βHSD, but not P450arom, and cellular cAMP synthesis induced by FSH...
March 12, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29543138/exercise-and-weight-loss-effects-on-cardiovascular-risk-factors-in-overweight-men
#5
Mads Rosenkilde, Lisbeth Rygaard, Pernille Nordby, Lars Bo Nielsen, Bente Stallknecht
Exercise training and weight loss both reduce cardiovascular risk, but the independent importance of the two strategies is unclear. We aimed to investigate independent and combined effects of exercise training and weight loss on lipoproteins and dyslipidemia in overweight sedentary men. Sixty individuals were randomized to 12 weeks of endurance training (T), energy-reduced diet (D), training and energy increased diet (T-iD), or control (C). Equal energetic deficits (-600 kcal/day) were prescribed by exercise for T and caloric restriction for D...
March 15, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29458046/bmp-2-induces-angiogenesis-by-provoking-integrin-%C3%AE-6-expression-in-human-endothelial-progenitor-cells
#6
Wei-Cheng Chen, Ching-Hu Chung, Yung-Chang Lu, Min-Huan Wu, Po-Hsun Chou, Juei-Yu Yen, Yu-Wei Lai, Guo-Shou Wang, Shih-Chia Liu, Jen-Kun Cheng, Yih-Jer Wu, Hung-I Yeh, Li-Yu Wang, Shih-Wei Wang
Bone morphogenetic proteins-2 (BMP-2) is a multifunctional cytokine, capable of governing several cellular functions, including proliferation, motility, differentiation, and angiogenesis. Circulating endothelial progenitor cells (EPCs) have been shown to facilitate tissue repair, postnatal neovascularization, and tumor associated angiogenesis. Nevertheless, the impact of BMP-2 on angiogenesis of human EPCs has largely remained a mystery. In this study, we found that BMP-2 promoted cell migration and tube formation of EPCs in a concentration-dependent manner, indicating BMP-2 induced in vitro angiogenesis in human EPCs...
February 16, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29328430/vanillin-improves-scopolamine%C3%A2-induced-memory-impairment-through-restoration-of-id1-expression-in-the-mouse-hippocampus
#7
Jae-Chul Lee, In Hye Kim, Jeong Hwi Cho, Tae-Kyeong Lee, Joon Ha Park, Ji Hyeon Ahn, Bich Na Shin, Bing Chun Yan, Jong-Dai Kim, Yong Hwan Jeon, Young Joo Lee, Moo-Ho Won, Il Jun Kang
4-Hydroxy-3-methoxybenzaldehyde (vanillin), contained in a number of species of plant, has been reported to display beneficial effects against brain injuries. In the present study, the impact of vanillin on scopolamine‑induced alterations in cognition and the expression of DNA binding protein inhibitor ID‑1 (ID1), one of the inhibitors of DNA binding/differentiation proteins that regulate gene transcription, in the mouse hippocampus. Mice were treated with 1 mg/kg scopolamine with or without 40 mg/kg vanillin once daily for 4 weeks...
March 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29233161/id-1-promotes-migration-and-invasion-of-non-small-cell-lung-cancer-cells-through-activating-nf-%C3%AE%C2%BAb-signaling-pathway
#8
Jie Li, Yingjie Li, Bin Wang, Yongfu Ma, Ping Chen
BACKGROUND: Numerous studies have shown that Id-1 (Inhibitor of differentiation 1) is upregulated in several cancers and associated with tumor malignant characters. However, the clinical significance and biological role of Id-1 in non-small cell lung cancer (NSCLC) remains unclear. METHODS: We used RT-PCR, Western blot and Immunohistochemistry to measure Id-1 expression in NSCLC tissues and matched adjacent noncancerous tissues. The expression pattern of Id-1 in NSCLC tissues was determined by scoring system of immunohistochemical analysis...
December 12, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/29193609/endogenous-hormone-2-methoxyestradiol-suppresses-venous-hypertension-induced-angiogenesis-through-up-and-down-regulating-p53-and-id-1
#9
Xiang Zou, Li Zhang, Jie Yuan, Chunjie Yang, Zehan Wu, Jianping Song, Wei Zhu, Ying Mao, Liang Chen
Brain arteriovenous malformations (AVMs) which associate with angiogenesis due to local hypertension, chronic cerebral ischaemia and tissue hypoxia usually lead to haemorrhage, however, the therapeutic medicine for the disease is still lacking. 2-methoxyestradiol (2-ME) has been shown effective in the anti-angiogenic treatment. This study was conducted to examine whether and how 2-ME could improve the vascular malformations. Intracranial venous hypertension (VH) model produced in adult male Sprague-Dawley rats and culture of human umbilical vein endothelial cells (HUVECs) at the anoxia condition were used to induce in vivo and in vitro angiogenesis, respectively...
February 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29156807/halofuginone-inhibits-tgf-%C3%AE-bmp-signaling-and-in-combination-with-zoledronic-acid-enhances-inhibition-of-breast-cancer-bone-metastasis
#10
Patricia Juárez, Pierrick G J Fournier, Khalid S Mohammad, Ryan C McKenna, Holly W Davis, Xiang H Peng, Maria Niewolna, Alain Mauviel, John M Chirgwin, Theresa A Guise
More efficient therapies that target multiple molecular mechanisms are needed for the treatment of incurable bone metastases. Halofuginone is a plant alkaloid-derivative with antiangiogenic and antiproliferative effects. Here we demonstrate that halofuginone is an effective therapy for the treatment of bone metastases, through multiple actions that include inhibition of TGFβ and BMP-signaling. Halofuginone blocked TGF-β-signaling in MDA-MB-231 and PC3 cells showed by inhibition of TGF-β-induced Smad-reporter, phosphorylation of Smad-proteins, and expression of TGF-β-regulated metastatic genes...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29129645/incretins-modulate-progesterone-biosynthesis-by-regulating-bone-morphogenetic-protein-activity-in-rat-granulosa-cells
#11
Yuki Nishiyama, Toru Hasegawa, Shiho Fujita, Nahoko Iwata, Satoko Nagao, Takeshi Hosoya, Kenichi Inagaki, Jun Wada, Fumio Otsuka
The effects of incretins on ovarian steroidogenesis have not been clarified. In this study, we investigated the effects of incretins, including GIP and GLP-1, on ovarian steroidogenesis using rat primary granulosa cells. Treatment with incretins significantly suppressed progesterone synthesis in the presence of FSH, and the effect of GIP was more potent than that of GLP-1. In contrast, incretins had no significant effect on estrogen synthesis by rat granulosa cells. In accordance with the effects of incretins on steroidogenesis, GIP and GLP-1 suppressed the expression of progesterogenic factors and enzymes, including StAR, P450scc, 3βHSD, but not P450arom, and cellular cAMP synthesis induced by FSH...
November 9, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29079782/camkii-mediated-beclin-1-phosphorylation-regulates-autophagy-that-promotes-degradation-of-id-and-neuroblastoma-cell-differentiation
#12
Xuan Li, Xiao-Qi Wu, Rong Deng, Dan-Dan Li, Jun Tang, Wen-Dan Chen, Jing-Hong Chen, Jiao Ji, Lin Jiao, Shan Jiang, Fen Yang, Gong-Kan Feng, Ravichandran Senthilkumar, Fei Yue, Hai-Liang Zhang, Rui-Yan Wu, Yan Yu, Xue-Lian Xu, Jia Mai, Zhi-Ling Li, Xiao-Dan Peng, Yun Huang, Xiang Huang, Ning-Fang Ma, Qian Tao, Yi-Xin Zeng, Xiao-Feng Zhu
Autophagy is a degradative pathway that delivers cellular components to the lysosome for degradation. The role of autophagy in cell differentiation is poorly understood. Here we show that CaMKII can directly phosphorylate Beclin 1 at Ser90 to promote K63-linked ubiquitination of Beclin 1 and activation of autophagy. Meanwhile, CaMKII can also promote K63-linked ubiquitination of inhibitor of differentiation 1/2 (Id-1/2) by catalyzing phosphorylation of Id proteins and recruiting TRAF-6. Ubiquitinated Id-1/Id-2 can then bind to p62 and be transported to autolysosomes for degradation...
October 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28965046/development-and-validation-of-a-sensitive-lc-ms-ms-method-for-simultaneous-determination-of-eight-tyrosine-kinase-inhibitors-and-its-application-in-mice-pharmacokinetic-studies
#13
Yu He, Lei Zhou, Song Gao, Taijun Yin, Yifan Tu, Robert Rayford, Xiaoqiang Wang, Ming Hu
The purpose of this study was to develop and validate a robust and sensitive LC-MS/MS method for simultaneous determinations of various tyrosine kinase inhibitors (TKIs) in biological samples and to apply the method to their pharmacokinetic studies. Processed samples were injected into the UHPLC system coupled to an ESI-triple quadrupole mass spectrometer. The compounds were separated on an AcQuity UHPLC BEH C18 column (50mm×2.1mm ID, 1.7μm) using a gradient elution of acetonitrile/0.1% formic acid in water...
September 11, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28920670/fabrication-of-hierarchical-porous-carbon-nanoflakes-for-high-performance-supercapacitors
#14
Yamin Yao, Yunqiang Zhang, Li Li, Shulan Wang, Shixue Dou, Xuan Liu
In the current work, the carbon nanoflakes (CNs-Fe/KOH) and porous carbon (PC-Ni/KOH) have been produced by using Fe(NO3)3/KOH and Ni(NO3)2/KOH as the cographitization/activation catalysts to treat the natural plane tree fluff, respectively. The as-prepared carbon materials show different morphologies when treated with different metal ions. Compared with PC-Ni/KOH, the CNs-Fe/KOH have both high graphitization degree (IG/ID = 1.53) and large SBET (1416 m(2)/g). In a three-electrode setup, the CNs-Fe/KOH electrode shows a high specific capacitance of 253 F/g at 10 A/g, with a capacitance retention of 92...
October 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28858483/monomeric-and-dimeric-oxidomolybdenum-v-and-vi-complexes-cytotoxicity-and-dna-interaction-studies-molybdenum-assisted-c%C3%A2-n-bond-cleavage-of-salophen-ligands
#15
Sudarshana Majumder, Sagarika Pasayat, Alok K Panda, Subhashree P Dash, Satabdi Roy, Ashis Biswas, Mokshada E Varma, Bimba N Joshi, Eugenio Garribba, Chahat Kausar, Samir Kumar Patra, Werner Kaminsky, Aurélien Crochet, Rupam Dinda
Four novel dimeric bis-μ-imido bridged metal-metal bonded oxidomolybdenum(V) complexes [MoV 2 O2 L'2 1-4 ] (1-4) (where L'1-4 are rearranged ligands formed in situ from H2 L1-4 ) and a new mononuclear dioxidomolybdenum(VI) complex [MoVI O2 L5 ] (5) synthesized from salen type N2 O2 ligands are reported. This rare series of imido-bridged complexes (1-4) have been furnished from rearranged H3 L'1-4 ligands, containing an aromatic diimine (o-phenylenediamine) "linker", where Mo assisted hydrolysis followed by -C═N bond cleavage of one of the arms of the ligand H2 L1-4 took place...
September 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28742866/contribution-of-factor-h-binding-protein-sequence-to-the-cross-reactivity-of-meningococcal-native-outer-membrane-vesicle-vaccines-with-over-expressed-fhbp-variant-group-1
#16
Arianna Marini, Omar Rossi, Maria Grazia Aruta, Francesca Micoli, Simona Rondini, Serafina Guadagnuolo, Isabel Delany, Ian R Henderson, Adam F Cunningham, Allan Saul, Calman A MacLennan, Oliver Koeberling
Factor H-binding protein (fHbp) is an important meningococcal vaccine antigen. Native outer membrane vesicles with over-expressed fHbp (NOMV OE fHbp) have been shown to induce antibodies with broader functional activity than recombinant fHbp (rfHbp). Improved understanding of this broad coverage would facilitate rational vaccine design. We performed a pair-wise analysis of 48 surface-exposed amino acids involved in interacting with factor H, among 383 fHbp variant group 1 sequences. We generated isogenic NOMV-producing meningococcal strains from an African serogroup W isolate, each over-expressing one of four fHbp variant group 1 sequences (ID 1, 5, 9, or 74), including those most common among invasive African meningococcal isolates...
2017: PloS One
https://www.readbyqxmd.com/read/28684382/a-regulatory-role-of-androgen-in-ovarian-steroidogenesis-by-rat-granulosa-cells
#17
Toru Hasegawa, Yasuhiko Kamada, Takeshi Hosoya, Shiho Fujita, Yuki Nishiyama, Nahoko Iwata, Yuji Hiramatsu, Fumio Otsuka
Excess androgen and insulin-like growth factor (IGF)-I in the ovarian follicle has been suggested to be involved in the pathophysiology of polycystic ovary syndrome (PCOS). Here we investigated the impact of androgen and IGF-I on the regulatory mechanism of ovarian steroidogenesis using rat primary granulosa cells. It was revealed that androgen treatment with dihydrotestosterone (DHT) amplified progesterone synthesis in the presence of FSH and IGF-I, whereas it had no significant effect on estrogen synthesis by rat granulosa cells...
September 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28677837/determination-of-tigecycline-in-human-plasma-by-lc-ms-ms-and-its-application-to-population-pharmacokinetics-study-in-chinese-patients-with-hospital-acquired-pneumonia
#18
Rong Shao, Xingang Li, Yangmin Hu, Jinliang Chen, Honggang Lou, Haibin Dai
A selective, sensitive and rapid liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed and validated for the determination of tigecycline (TGC) in human plasma, using tigecycline-d9 as an internal standard (IS). Analytical samples were prepared using a protein precipitation method coupled with a concentration process. The analyte and IS were separated on a reversed-phase Waters Acquity UPLC(®) BEH-C18 column (2.1 × 50 mm i.d., 1.7 μm) with a flow rate of 0.25 mL/min. The mobile phase consisted of water, containing 0...
July 5, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28656211/notch-signaling-pathway-promotes-osteogenic-differentiation-of-mesenchymal-stem-cells-by-enhancing-bmp9-smad-signaling
#19
Junjie Cao, Yalin Wei, Jing Lian, Lunyun Yang, Xiaoyan Zhang, Jiaying Xie, Qiang Liu, Jinyong Luo, Baicheng He, Min Tang
Notch is an important pathway in that it regulates cell-to-cell signal transduction, which plays an essential role in skeletal remodeling. Bone morphogenetic protein (BMP)9 has been regarded as one of the most efficient BMPs by which to induce osteogenic differentiation in mesenchymal stem cells (MSCs). Understanding the interaction between Notch and BMP9 signaling is a critical issue for optimizing the application of MSCs and BMPs in bone tissue engineering. In the present study, we investigated the role of Notch signaling in the BMP9‑induced osteogenic differentiation of MSCs...
June 22, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28627372/regulatory-role-of-melatonin-and-bmp-4-in-prolactin-production-by-rat-pituitary-lactotrope-gh3-cells
#20
Kanako Ogura-Ochi, Satoshi Fujisawa, Nahoko Iwata, Motoshi Komatsubara, Yuki Nishiyama, Naoko Tsukamoto-Yamauchi, Kenichi Inagaki, Jun Wada, Fumio Otsuka
The effects of melatonin on prolactin production and its regulatory mechanism remain uncertain. We investigated the regulatory role of melatonin in prolactin production using rat pituitary lactotrope GH3 cells by focusing on the bone morphogenetic protein (BMP) system. Melatonin receptor activation, induced by melatonin and its receptor agonist ramelteon, significantly suppressed basal and forskolin-induced prolactin secretion and prolactin mRNA expression in GH3 cells. The melatonin MT2 receptor was predominantly expressed in GH3 cells, and the inhibitory effects of melatonin on prolactin production were reversed by treatment with the receptor antagonist luzindole, suggesting functional involvement of MT2 action in the suppression of prolactin release...
June 13, 2017: Peptides
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