The present invention relates to the use of dendrimers with monophosphonic or bisphosphonic terminations in order to stimulate the growth of cell cultures or to activate cells in culture.
本发明涉及在细胞培养中使用具有单磷酸或双磷酸端基的树枝状聚合物,以促进细胞培养的生长或激活细胞。
Catalytic Cooperativity, Nuclearity, and O
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Specificity of Multi‐Copper(II) Complexes of Cyclen‐Tethered Cyclotriphosphazene Ligands in Aqueous Media
作者:Le Wang、Yong Ye、Vasiliki Lykourinou、Junliang Yang、Alexander Angerhofer、Yufen Zhao、Li‐June Ming
DOI:10.1002/ejic.201700811
日期:2017.11.16
Three ligands L1, L2, and L3 with 2, 4, and 6 1,4,7,10‐tetraazacyclododecane (cyclen) moieties attached to a cyclotriphosphazene core, respectively, were synthesized, and oxidation activities of their CuII complexes were investigated. Aerobic oxidation of catechol by these complexes follows an intramolecular dinuclear pathway with significant cooperativity (i.e., θ ≈ 1.5 out of a maximum of 2 for two
分别合成了三个分别带有2、4和6个1,4,7,10-四氮杂环十二烷(环)的配体L1,L2和L3,并研究了其Cu II配合物的氧化活性。这些复合物的邻苯二酚有氧氧化遵循分子内双核途径,具有显着的协同作用(即,对于两个潜在的底物结合位点,θ≈1.5,最大值为2)和动力学常数(即,k cat = 17.5×10 –3 s – 1,K m = 2.8毫米,并且每个二铜中心的催化特异性为k cat / K m 12.5 m –1 s –1,非常显着,而不受束缚的Cu II –cycln的催化特异性遵循双分子双核途径,没有明显的协同性(θ = 0.96),并且k值低四倍猫,尽管它们具有类似的双核机制。EPR光谱和弛豫表明Cu II中心的接近,显示出较宽的光谱成分,尤其是在Cu 6 L3中。热力学参数还表明了多铜II的重要性位在氧化催化中。空气是典型的复合物Cu 2 L1的更具体的氧化剂,对儿茶酚底物的催化特异性k
Low-Generation Cationic Phosphorus Dendrimers: Novel Approach to Tackle Drug-Resistant <i>S. aureus</i> <i>In Vitro</i> and <i>In Vivo</i>
drug-susceptible S. aureus. Additionally, there is a big paucity of therapeutics available for treatment of serious infections caused by MRSA. Thus, the discovery and development of novel therapies is an urgent, unmet medical need. In this context, we synthesized AE4G0, a low-generation cationic-phosphorus dendrimer expressing potent antimicrobial activity against S. aureus and Enterococcus sp., and demonstrating
Tailored Control and Optimisation of the Number of Phosphonic Acid Termini on Phosphorus-Containing Dendrimers for the Ex-Vivo Activation of Human Monocytes
The syntheses of a series of phosphonic acid-capped dendrimers is described. This collection is based on a unique set of dendritic structural parameters-cyclo(triphosphazene) core, benzylhydrazone branches and phosphonicacid surface-and was designed to study the influence of phosphonate (phosphonicacid) surface loading towards the activation of humanmonocytes ex vivo. Starting from the versatile