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Reversing polarity: Carbonyl α‐aminations with nitrogen nucleophiles

20-May-2017 | Aurelien de la Torre, Veronica Tona, Nuno Maulide, Angewandte Chemie International Edition, 2017

The synthesis of alpha‐amino carbonyl compounds is an important challenge in synthesis en route to biologically essential structures. While classical approaches involve the use of enol or enolate chemistries in combination with an electrophilic source of nitrogen, those strategies usually ...


Molecular weight analysis of water‐soluble poly(phenylene ethynylene)s using MALDI‐TOF MS

20-May-2017 | Jiatao Wu, Chunyan Tan, Xinwen Zhou, Ying Tan, Pengyuan Yang, Yuyang Jiang, Journal of Polymer Science Part A: Polymer Chemistry, 2017

ABSTRACT Molecular weights of seven poly(phenylene ethynylene)‐based water‐soluble conjugated polyelectrolytes (CPEs) obtained through Sonogashira coupling are determined by matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry (MALDI‐TOF MS). A standard sample ...


A fully coupled thermo‐viscoelastic finite element model for self‐folding shape memory polymer sheets

20-May-2017 | Russell W. Mailen, Michael D. Dickey, Jan Genzer, Mohammed A. Zikry, Journal of Polymer Science Part B: Polymer Physics, 2017

ABSTRACT The thermo‐mechanical response of heat activated shape memory polymers (SMPs) has been investigated using a thermo‐viscoelastic finite element analysis that accounts for external and internal heat sources. SMPs can be thermally stimulated by external heat sources, such as temperature ...


Syntheses of triblock bottlebrush polymers through sequential ROMPs: Expanding the functionalities of molecular brushes

20-May-2017 | Lu Su, Gyu Seong Heo, Yen‐Nan Lin, Mei Dong, Shiyi Zhang, Yingchao Chen, Guorong Sun, Karen L. Wooley, Journal of Polymer Science Part A: Polymer Chemistry, 2017

Well‐defined triblock bottlebrush copolymers, composed of a hydrophilic and stealth graft segment, a hydrophobic and self‐assembly‐driving segment, and a protected amine‐containing segment, which could serve as a functional segment after deprotection, were synthesized through sequential ...


Universal Method for Large Scale Synthesis of Layered Transition Metal Dichalcogenides

20-May-2017 | Zdenek Sofer, David Sedmidubsky, Jan Luxa, Daniel Bousa, Stepan Huber, Petr Lazar, Martin Vesely, Martin Pumera, Chemistry - A European Journal, 2017

The layered transition metal dichalcogenides currently belong to the most intensively investigated materials. These com‐pounds constitute a broad family of materials with characteristic layered structures and covering both semiconductors and metallic materials. The great attention arises from ...


Vitamin D3 alters the expression of Toll‐like receptors in peripheral blood mononuclear cells of patients with systemic lupus erythematosus

20-May-2017 | Esmaeil Yazdanpanah, Mahmoud Mahmoudi, Maryam Sahebari, Zahra Rezaieyazdi, Seyed‐Alireza Esmaeili, Nafiseh Tabasi, S ..., Journal of Cellular Biochemistry, 2017

Abstract Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by production of inflammatory cytokines and autoreactive antibodies due to the loss of immune tolerance. Recognition of self‐nucleic acids by intracellular Toll‐like receptors (TLRs) can overactivate immune ...


CRISPR Editing in Biological and Biomedical Investigation

20-May-2017 | Xing‐Da Ju, Jing Xu, Zhong Sheng Sun, Journal of Cellular Biochemistry, 2017

ABSTRACT The CRISPR (clustered regularly interspaced short palindromic repeat)‐Cas (CRISPR‐‐associated protein) system, a prokaryotic RNA‐based adaptive immune system against viral infection, is emerging as a powerful genome editing tool in broad research areas. To further improve and expand ...


Tumor Necrosis Factor‐α induced apoptosis in U937 cells promotes cathepsin D‐independent stefin B degradation

20-May-2017 | Katja Bidovec, Janja Božič, Iztok Dolenc, Boris Turk, Vito Turk, Veronika Stoka, Journal of Cellular Biochemistry, 2017

ABSTRACT Lysosomal cathepsins were previously found to be involved in tumor necrosis factor‐α (TNFα)‐induced apoptosis. However, there are opposing views regarding their role as either initiators or amplifiers of the signaling cascade as well as the order of molecular events during this ...


COMMD1: A multifunctional regulatory protein

20-May-2017 | Mario Riera Romo, Journal of Cellular Biochemistry, 2017

Abstract The COMMD Protein Family is highly conserved among multicellular eukaryotic organisms and many orthologs of human COMMD genes have been found in different species of plants, invertebrates, lower vertebrates and mammals. COMMD1 is the best characterized member of the family and is ...


LncRNA‐MALAT1 promotes angiogenesis of thyroid cancer by modulating tumor‐associated macrophage FGF2 protein secretion

20-May-2017 | Jian‐kang Huang, Wen‐hua Song, Bang‐yu Lu, Yu‐bin Huang, Hui‐ming Dong, Xiao‐kai Ma, Zheng‐zhi Zhu, Rui Zhou, Ling Ma, Journal of Cellular Biochemistry, 2017

Abstract Objective: Tumor‐associated macrophages (TAMs) in the tumor microenvironment have been associated with enhanced tumor progression. In this study, we investigated the role and molecular mechanisms of MALAT1 in TAMs derived from thyroid cancer. Methods: The expression of MALAT1 and ...


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