The synthesis and biologicalevaluation of analogues of uridylpeptide antibiotics were described, and the molecular interaction between the 3′-hydroxy analogue of mureidomycin A (3′-hydroxymureidomycin A) and its target enzyme, phospho-MurNAc-pentapeptide transferase (MraY), was analyzed in detail. The structure–activity relationship (SAR) involving MraY inhibition suggests that the side chain at the
[EN] METAL/RADIOMETAL-LABELED PSMA INHIBITORS FOR PSMA-TARGETED IMAGING AND RADIOTHERAPY<br/>[FR] INHIBITEURS DU PSMA MARQUÉS PAR UN MÉTAL/RADIOMÉTAL POUR IMAGERIE ET RADIOTHÉRAPIE CIBLÉES VERS LE PSMA
申请人:UNIV JOHNS HOPKINS
公开号:WO2015171792A1
公开(公告)日:2015-11-12
Low-molecular weight gadolinium (Gd)-based MR contrast agents for PSMA- specific Ti-weighted MR imaging are disclosed. The (Gd)-based MR contrast agents exhibit high binding affinity for PSMA and exhibit specific Ti contrast enhancement at PSMA+ cells. The PSMA-targeted Gd-based MR contrast agents can be used for PSMA- targeted imaging in vivo. 86Y-labeled PSMA-binding ureas also are provided, wherein the PSMA-binding ureas also are suitable for use with other radiotherapeutics.
Macrocyclic Inhibitors of HGF-Activating Serine Proteases Overcome Resistance to Receptor Tyrosine Kinase Inhibitors and Block Lung Cancer Progression
作者:Vishnu C. Damalanka、Jorine J. L. P. Voss、Matthew W. Mahoney、Tina Primeau、Shunqiang Li、Lidija Klampfer、James W. Janetka
DOI:10.1021/acs.jmedchem.1c01671
日期:2021.12.23
series of cyclic tripeptides has superior metabolic stability and significantly improved pharmacokinetics in mice relative to the corresponding linear peptides. We identified the lead compound VD2173 that potently inhibits matriptase and hepsin, which was tested in parallel alongside the acyclic inhibitor ZFH7116 using both in vitro and in vivo models of lung cancer. We demonstrated that both compounds block
肝细胞生长因子 (HGF) 是 MET 受体酪氨酸激酶的配体,是肿瘤微环境中丰富的促肿瘤因子。一种或多种丝氨酸内肽酶matriptase、hepsin和HGF激活剂对无活性pro-HGF的蛋白水解激活是HGF/MET信号传导中的限速步骤。在此,我们合理设计了一类新型侧链环化大环肽抑制剂。相对于相应的线性肽,新系列的环状三肽具有优越的代谢稳定性和显着改善的小鼠药代动力学。我们确定了有效抑制matriptase和hepsin的先导化合物VD2173,并在体外和体内肺癌模型中与无环抑制剂ZFH7116同时进行了测试。我们证明了这两种化合物都能阻断 pro-HGF 活化,消除 HGF 介导的伤口愈合,并克服肺癌模型中对 EGFR 和 MET 靶向治疗的耐药性。此外,VD2173 抑制小鼠肺癌肿瘤的 HGF 依赖性生长。
Solid-Phase O-Glycosylation with a Glucosamine Derivative for the Synthesis of a Glycopeptide
作者:Philip Ryan、Andy Hsien Wei Koh、Anna Elizabeth Lohning、Santosh Rudrawar
DOI:10.1071/ch17201
日期:——
An efficient synthesis of the O-linked glycosylamino acid Fmoc–l-Ser((Ac)3–β-d-GlcNAc)-OH building block is described. The utility of the method was demonstrated with direct solid-phase O-glycosylation of the hydroxyl group on the amino acid (Ser) side chain of a human α-A crystallin-derived peptide (AIPVSREEK) in nearly quantitative glycosylation yield.
的有效合成的ø -连接glycosylamino酸的Fmoc-升-Ser((AC)3 -β- d -GlcNAc)-OH积木进行说明。该方法的实用性通过直接固相O-糖基化人类α-A晶状蛋白衍生肽(AIPVSREEK)的氨基酸(Ser)侧链上的羟基而得到证明,几乎可以定量地糖基化。
Nanoscale Biodegradable Organic–Inorganic Hybrids for Efficient Cell Penetration and Drug Delivery
carrier was significantly more potent than cell‐penetrating peptides (CPPs) and displayed low toxicity. It efficiently delivered a covalently attached cytotoxic drug, doxorubicin, to living tumor cells. As the uptake of fluorescently labeled carrier remained in the presence of serum, the system could be considered particularly attractive for the in vivo delivery of therapeutics.