Synthesis and preliminary investigations into norbornane-based amphiphiles and their self-assembly
作者:Jennifer S. Squire、Alessandra Sutti、Grégory Durand、Xavier A. Conlan、Luke C. Henderson
DOI:10.1039/c3nj00145h
日期:——
A range of norbornane based amphiphiles, which possess a rigid ‘kink’ in the centre of amphiphiles, were accessed via a concise four step synthesis. The self-assembly properties of these novel compounds were then investigated and the critical aggregation concentration (CAC), hydrodynamic diameter (DH) by dynamic light scattering (DLS) and their morphology by cryogenic transmission electron microscopy (cryoTEM) and negatively stained transmission electron microscopy (TEM) were determined. These compounds while possessing similar CAC values (50–70 μM) exhibited a wide variety of particle size (60–140 nm) and morphologies, including vesicles, cigar-shaped aggregates and rod-like micelles. Considering the similarities in molecular structure we have proposed that the unique nature of the molecular ‘kink’ is affecting molecular assembly in which subtle changes in molecular structure have large ramifications on aggregate size and morphology.
作者:Victorio Saez Talens、Pablo Englebienne、Thuat T. Trinh、Willem E. M. Noteborn、Ilja K. Voets、Roxanne E. Kieltyka
DOI:10.1002/anie.201503905
日期:2015.9.1
of strong hydrogen bonding and aromaticgain of the monomer units. The aromatic contribution to the interaction energy was further supported computationally by nucleus‐independent chemical shift (NICS) and harmonic oscillator model of aromaticity (HOMA) indices, demonstrating greater aromatic character upon polymerization: at least 30 % in a pentamer. The aromatic gain–hydrogen bonding synergy results
Modifying the Catalytic Activity of Lipopeptide Assemblies with Nucleobases
作者:Sonia Vela‐Gallego、Bartosz Lewandowski、Jasper Möhler、Alonso Puente、David Gil‐Cantero、Helma Wennemers、Andrés de la Escosura
DOI:10.1002/chem.202303395
日期:2024.1.2
Biomolecular conjugates consisting of a catalytic tripeptide, a fatty acid and nucleobase moieties form defined fibrillar assemblies in aqueousmedia and catalyze the reaction of butanal with nitrostyrene. The interaction between complementary nucleobases enhanced the order in the supramolecular assemblies and influenced the catalytic properties of the peptide-nucleolipids, indicating that nucleobases
challenge. By taking advantage of the emerging PROteolysis-TArgetingChimeras (PROTACs) approach, we have synthesized a potentPROTACdegrader PP-C8 based on the noncovalent dual inhibitors of CDK12/13 and demonstrated its specificity for CDK12 over CDK13. Notably, PP-C8 induces profound degradation of cyclin K simultaneously and downregulates the mRNA level of DNA-damage response genes. Global proteomics
细胞周期蛋白依赖性激酶 12 (CDK12) 在 DNA 损伤反应基因转录中起着至关重要的作用,最近已被证实是癌症治疗中的一个有希望的靶点。然而,现有的 CDK12 抑制剂会有效抑制其最接近的同种型 CDK13,这可能会导致潜在的毒性。因此,开发对 CDK13 具有同种型选择性的 CDK12 抑制剂仍然是一个挑战。通过利用新兴的 PROteolysis-TArgeting Chimeras (PROTACs) 方法,我们合成了一种基于 CDK12/13 的非共价双重抑制剂的强效 PROTAC 降解剂PP-C8 ,并证明其对 CDK12 的特异性优于 CDK13。值得注意的是,PP-C8同时诱导细胞周期蛋白 K 的深度降解并下调 DNA 损伤反应基因的 mRNA 水平。全球蛋白质组学分析显示PP-C8对 CDK12-cyclin K 复合物具有高度选择性。重要的是,PP-C8与 PARP 抑制剂在三阴性乳腺癌
Fuchs,S.; Voelter,W., Zeitschrift fur Naturforschung, Teil B: Anorganische Chemie, Organische Chemie, 1976, vol. 31, p. 1410 - 1415