Allosteric Functional Switch of Neurokinin A-Mediated Signaling at the Neurokinin NK2 Receptor: Structural Exploration
摘要:
The neurokinin NK2 receptor is known to pre-exist in equilibrium between at least three states: resting-inactive, calcium-triggering, and cAMP-producing. Its endogeneous ligand, NKA, mainly induces the calcium response. Using a FRET-based assay, we have previously discovered an allosteric modulator of the NK2 receptor that has the unique ability to discriminate among the two signaling pathways: calcium-signaling is not affected while CAMP signaling is significantly decreased. A series of compounds have been prepared and studied in order to better understand the structural determinants of this allosteric functional switch of a GPCR. Most of them display the same allosteric profile, with smooth pharmacomodulation. One compound however exhibits significantly improved modulatory properties of NKA induced signaling when compared to the original modulator.
Allosteric Functional Switch of Neurokinin A-Mediated Signaling at the Neurokinin NK2 Receptor: Structural Exploration
摘要:
The neurokinin NK2 receptor is known to pre-exist in equilibrium between at least three states: resting-inactive, calcium-triggering, and cAMP-producing. Its endogeneous ligand, NKA, mainly induces the calcium response. Using a FRET-based assay, we have previously discovered an allosteric modulator of the NK2 receptor that has the unique ability to discriminate among the two signaling pathways: calcium-signaling is not affected while CAMP signaling is significantly decreased. A series of compounds have been prepared and studied in order to better understand the structural determinants of this allosteric functional switch of a GPCR. Most of them display the same allosteric profile, with smooth pharmacomodulation. One compound however exhibits significantly improved modulatory properties of NKA induced signaling when compared to the original modulator.
Selective oxygenation of C(sp3)–Hbonds adjacent to nitrogen atoms is a highly attractive strategy for synthesizing various formamide derivatives while preserving the substrate skeletons. Herein, an environmentally benign electrochemically enabled decyanative C(sp3)–H oxygenation of N-cyanomethylamines using H2O as a carbonyl oxygen atom source is described, leading to the synthesis of a large class
与氮原子相邻的C(sp 3 )–H 键的选择性氧化是合成各种甲酰胺衍生物同时保留底物骨架的极具吸引力的策略。在此,描述了使用 H 2 O 作为羰基氧原子源对N-氰基甲胺进行环境友好的电化学脱氰 C(sp 3 )–H 氧化反应,从而以良好至优异的收率合成了一大类甲酰胺,具有在无金属和无氧化剂的条件下具有广泛的底物范围。这种电化学技术突出了将N-甲酰基轻松结合到一些重要的生物活性分子中。
Allosteric Functional Switch of Neurokinin A-Mediated Signaling at the Neurokinin NK2 Receptor: Structural Exploration
The neurokinin NK2 receptor is known to pre-exist in equilibrium between at least three states: resting-inactive, calcium-triggering, and cAMP-producing. Its endogeneous ligand, NKA, mainly induces the calcium response. Using a FRET-based assay, we have previously discovered an allosteric modulator of the NK2 receptor that has the unique ability to discriminate among the two signaling pathways: calcium-signaling is not affected while CAMP signaling is significantly decreased. A series of compounds have been prepared and studied in order to better understand the structural determinants of this allosteric functional switch of a GPCR. Most of them display the same allosteric profile, with smooth pharmacomodulation. One compound however exhibits significantly improved modulatory properties of NKA induced signaling when compared to the original modulator.