Inhibition of the Alanine-Serine-Cysteine-1 Transporter by BMS-466442
摘要:
Experiment and modeling were combined to understand inhibition of the alanine-serine-cysteine-1 (asc1) transporter. The structure-activity relationship (SAR) was explored with synthesis of analogues of BMS-466442. Direct target interaction and binding site location between TM helices 6 and 10 were confirmed via site directed mutagenesis. Computational modeling suggested the inhibitor binds via competitive occupation of the orthosteric site while also blocking the movement of TM helices that are required for transport.
To discover analgesics for treating chronic pain 17 novel Schiff’s bases, N,N′-(Z-allylidene-1,3-diyl)bisamino acid methyl esters were prepared from 1,1,3,3,-tetramethoxypropane and amino acid methyl esters. On tail-flick mouse model 20 μmol/kg of these Schiff’s bases were orally administered, the analgesic action started 30 min after administration, reached the maximum 120 min after administration
Zinc(II) tweezers containing artificial peptides mimicking the active site of phosphotriesterase: The catalyzed hydrolysis of the toxic organophosphate parathion
作者:Mohamed M. Ibrahim、Gaber A.M. Mersal
DOI:10.1016/j.jinorgbio.2010.07.009
日期:2010.11
ligand-containing histidine based on N,N′,N″-tris(N-benzyl-l-histidinyl)tri(2-aminoethyl)amine, L1, namely N,N′,N″-tris[(1S)-2-methoxy-2-oxy-1-(1-benzylimidazol-4-ylmethyl)]nitrilotriacetamide L2 and N,N′,N″-trisN-benzyl-N-[N-benzyl-N-(N-benzyl-l-histidinyl)-l-histidinyl]-l-histidinyl}tri(2-aminoethyl)amine L3 were prepared. Zinc(II) binding studies by these ligand systems were analyzed by means of potentiometric
N-(ARYL/HETEROARYL) AMINO ACID DERIVATIVES, PHARMACEUTICAL COMPOSITIONS COMPRISING SAME, AND METHODS FOR INHIBITING BETA-AMYLOID PEPTIDE RELEASE AND/OR ITS SYNTHESIS BY USE OF SUCH COMPOUNDS
申请人:——
公开号:US20010020097A1
公开(公告)日:2001-09-06
Disclosed are compounds which inhibit &bgr;-amyloid peptide release and/or its synthesis, and, accordingly, have utility in treating Alzheimer's disease. Also disclosed are pharmaceutical compositions comprising a compound which inhibits &bgr;-amyloid peptide release and/or its synthesis as well as methods for treating Alzheimer's disease both prophylactically and therapeutically with such pharmaceutical compositions.
Antifungal evaluation and mechanistic investigations of membrane active short synthetic peptides-based amphiphiles
作者:Komal Sharma、Shams Aaghaz、Indresh K. Maurya、Shivaprakash M. Rudramurthy、Shreya Singh、Vinod Kumar、Kulbhushan Tikoo、Rahul Jain
DOI:10.1016/j.bioorg.2022.106002
日期:2022.10
The quest for newclass of peptide-based antibiotics has steered this research towards the design and synthesis of short sequences possessing modified amphiphilic histidine along with hydrophobic tryptophan residues. The new structural class of dipeptides Trp-His(1-Bn)-OMe/NHBn and tripeptides His(1-Bn)-Trp-His(1-Bn)-OMe/NHBn demonstrated promising antifungal and antibacterial activities with membrane
对新型肽类抗生素的探索将这项研究导向设计和合成具有修饰的两亲性组氨酸和疏水色氨酸残基的短序列。二肽 Trp-His(1-Bn)-OMe/NHBn 和三肽 His(1-Bn)-Trp-His(1-Bn)-OMe/NHBn 的新结构类别显示出有前景的抗真菌和抗菌活性和膜溶解作用。二肽 Trp-His[1-(3,5-二叔丁基苄基)]-NHBn ( 13d ) 显示了理想的亲水-亲油平衡,它产生了最有希望的抗真菌活性,IC 50值为 2.10 μg/ mL 和 MIC = 3.81 μg/mL,对C. neoformans和对E. faecalis的抗菌活性和金黄色葡萄球菌具有相同的 IC 50值为 4.40 μg/mL 和 8.0 μg/mL 的 MIC。肽13d在MIC值及以上没有表现出细胞毒性和溶血作用。这种典型的两亲性进一步得到了机理解释的证实,这表明肽通过利用电荷和疏水性作为主要特征工具
Novel metal chelating molecules with anticancer activity. Striking effect of the imidazole substitution of the histidine–pyridine–histidine system
Previously we have reported a metal chelating histidine-pyridine-histidine system possessing a trityl group on the histidine imidazole, namely HPH-2Trt, which induces apoptosis in human pancreatic adenocarcinoma AsPC-1 cells. Herein the influence of the imidazole substitution of HPH-2Trt was examined. Five related compounds, HPH-1Trt, HPH-2Bzl, HPH-1Bzl, HPH-2Me, and HPH-1Me were newly synthesized and screened for their activity against AsPC-1 and brain tumor cells U87 and U251. HPH-1Trt and HPH-2Trt were highly active among the tested HPH compounds. In vitro DNA cleavage assay showed both HPH-1Trt and HPH-2Trt completely disintegrate pUC19 DNA. The introduction of trityl group decisively potentiated the activity. (C) 2015 Elsevier Ltd. All rights reserved.