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Long noncoding RNAs in cancer cells
Bach, Duc-Hiep,Lee, Sang Kook Elsevier 2018 Cancer letters Vol.419 No.-
<P><B>Abstract</B></P> <P>Long noncoding RNA (lncRNA) has recently been investigated as key modulators that regulate many biological processes in human cancers via diverse mechanisms. LncRNAs can interact with macromolecules such as DNA, RNA, or protein to exert cellular effects and to act as either tumor promoters or tumor suppressors in various malignancies. Moreover, the aberrant expression of lncRNAs may be detected in multiple cancer phenotypes by employing the rapidly developing modern gene chip technology and bioinformatics analysis. Herein, we highlight the mechanisms of action of lncRNAs, their functional cellular roles and their involvement in cancer progression. Finally, we provide an overview of recent progress in the lncRNA field and future potential for lncRNAs as cancer diagnostic markers and therapeutics.</P> <P><B>Highlights</B></P> <P> <UL> <LI> lncRNAs might act as tumor promoters or tumor suppressors in cancer development. </LI> <LI> lncRNAs are suggested as diagnostic and prognostic markers in cancer progression. </LI> <LI> lncRNAs are key regulators of pathways involving each of the hallmarks of cancer. </LI> </UL> </P>
Development of a GPS/INS integrated navigation system for model aircraft
Bach-Phi Duong,Vinh-Hao Nguyen 제어로봇시스템학회 2014 제어로봇시스템학회 국제학술대회 논문집 Vol.2014 No.10
This paper addresses the development of an integrated navigation system based on MEMS inertial sensors and GPS for model aircraft. The objective of this paper is to propose a loosely coupled GPS/INS integration approach using Extended Kalman filter to estimate aircraft’s position, velocity, and attitude. Special attention is paid to the computational performance of the algorithm and the handling of GPS outages. The simulation results based on a typical high dynamic flight trajectory validate that the proposed filter is applicable to flight navigation.
Bach, L.G.,Islam, Md.R.,Lim, K.T. North-Holland 2013 Materials letters Vol.93 No.-
Hyperbranched polyglycerols (HPG) were covalently grown from hydroxyapatite nanocrystals (HAP NCs) via surface-initiated anionic ring-opening multibranching polymerization (SI-AROMP) of glycidol. HAP NCs were first functionalized by (3-mercaptopropyl)-trimethoxysilane to get HAP-SH NCs. Then, SI-AROMP of glycidol was accomplished to afford HPG grafted HAP NCs (HPG-g-HAP). The structure and morphology, and charge behavior of HPG-g-HAP nanocomposites were investigated by FT-IR, TGA, TEM, SEM, XRD, and zeta potential measurements. A model drug ibuprofen (IBU) was employed to evaluate the drug loading/release behavior of the HPG-g-HAP nanocomposites. In vitro IBU release profile suggested the nanocomposites as a promising drug delivery system (DDS).
Bach, Long Giang,Islam, Md. Rafiqul,Gal, Yeong Soon,Lim, Kwon Taek American Scientific Publishers 2012 Journal of Nanoscience and Nanotechnology Vol.12 No.7
<P>An approach to the surface modification of TiO2 nanoparticles was described based on the thiol functionalization of TiO2 followed by thiol-lactam initiated radical polymerization (TLIRP) of methyl methacrylate (MMA). FT-IR, XRD and XPS analyses confirmed the grafting of the polymer on the TiO2 surface. TGA analysis revealed superior thermal stability of PMMA-g-TiO2 compared with PMMA. TEM measurements and time-dependent phase monitoring suggested much higher colloidal stability of PMMA-g-TiO2 than TiO2 in toluene. The controlled nature of the TLIRP of MMA from the surface of TiO2 was determined by GPC analysis.</P>