160390-90-9Relevant articles and documents
New Rev-transport inhibitor with anti-HIV activity from Valerianae Radix
Murakami, Nobutoshi,Ye, Ying,Kawanishi, Motoyuki,Aoki, Shunji,Kudo, Nobuaki,Yoshida, Minoru,Nakayama, Emi E.,Shioda, Tatsuo,Kobayashi, Motomasa
, p. 2807 - 2810 (2002)
Bioassay-guided separation by use of the fission yeast expressing NES of Rev, a HIV-1 viral regulatory protein, resulted in isolation of valtrate (1) as a new Rev-transport inhibitor from the nucleus to cytoplasm from Valerianae Radix. Valtrate (1) also inhibited the p-24 production of HIV-1 virus without showing any cytotoxicity against the host MT-4 cells.
Design and synthesis of biotinylated cardiac glycosides for probing Nur77 protein inducting pathway
Tian, Dan-mei,Qiao, Jia,Bao, Yu-zhou,Liu, Jie,Zhang, Xiao-kun,Sun, Xue-long,Zhang, You-wei,Yao, Xin-sheng,Tang, Jin-shan
supporting information, p. 707 - 712 (2019/01/22)
The orphan nuclear receptor Nur77 (also known as TR3 or nerve growth factor-induced clone B NGFI-B) functions as a nuclear transcription factor in the regulation of target gene expression and plays a critical role in the regulation of differentiation, proliferation, apoptosis, and survival of many different cell types. Recent studies demonstrate that Nur77 also involves many important physiological and pathological processes including cancer, inflammation and immunity, cardiovascular diseases, and bone diseases. Our previous studies showed that cardiac glycosides could induce the expression of Nur77 protein and its translocation from the nucleus to the cytoplasm and subsequent targeting to mitochondria, leading to apoptosis of cancer cells. In order to probe the Nur77 protein inducting pathway, we designed and synthesized a series of novel biotinylated cardiac glycosides from β-Antiarin and α-Antiarin, two typical cardiac glycosides from the plant of Antiaris toxicaria. The induction of Nur77 protein expression of these biotinylated cardiac glycosides and their inhibitory effects on NIH-H460 cancer cell proliferation were evaluated. Results displayed that some biotinylated cardiac glycosides could significantly induce the expression of Nur77 protein comparable with their parent compounds β-Antiarin and α-Antiarin. Also, their streptavidin binding activities were evaluated. Among them, biotinylated cardiac glycosides P4b and P5a exhibited significant effect on the induction of Nur77 expression along with high binding capacity with streptavidin, suggesting that they can be used as probes for probing Nur77 protein inducting pathway.
Artificial metalloenzymes: (Strept)avidin as host for enantioselective hydrogenation by achiral biotinylated rhodium-diphosphine complexes
Skander, Myriem,Humbert, Nicolas,Collot, Jerome,Gradinaru, Julieta,Klein, Gerard,Loosli, Andreas,Sauser, Jerome,Zocchi, Andrea,Gilardoni, Francois,Ward, Thomas R.
, p. 14411 - 14418 (2007/10/03)
We report on the generation of artificial metalloenzymes based on the noncovalent incorporation of biotinylated rhodium-diphosphine complexes in (strept)avidin as host proteins. A chemogenetic optimization procedure allows one to optimize the enantioselectivity for the reduction of acetamidoacrylic acid (up to 96% ee (R) in streptavidin S112G and up to 80% ee (S) in WT avidin). The association constant between a prototypical cationic biotinylated rhodium-diphosphine catalyst precursor and the host proteins was determined at neutral pH: log Ka = 7.7 for avidin (pl = 10.4) and log Ka = 7.1 for streptavidin (pl = 6.4). It is shown that the optimal operating conditions for the enantioselective reduction are 5 bar at 30 °C with a 1% catalyst loading.