作者:Abu-Baker M. Abdel-Aal、Kalifa Al-Isae、Mehfuz Zaman、Istvan Toth
DOI:10.1016/j.bmcl.2011.07.102
日期:2011.10
Stimulation of toll-like receptor 2 (TLR2) by bacterial lipoproteins induces fast non-specific immune responses against pathogens followed by slow but specific adaptive immune responses. Development of synthetic TLR2 agonists/antagonists would be useful in the prevention of different infectious and immunologic disorders. The current study reports synthesis and TLR2 activity of two simple TLR2 ligands, which
Kokotos, George; Constantinou-Kokotou, Violetta; Fernandez, Esther del Olmo, Liebigs Annalen der Chemie, 1992, # 9, p. 961 - 964
作者:Kokotos, George、Constantinou-Kokotou, Violetta、Fernandez, Esther del Olmo、Toth, Istvan、Gibbons, William A.
DOI:——
日期:——
Leishmanicidal activity of some aliphatic diamines and amino-Alcohols
作者:Esther del Olmo、Mario Alves、José L López、Alba Inchaustti、Gloria Yaluff、Antonieta Rojas de Arias、Arturo San Feliciano
DOI:10.1016/s0960-894x(01)00837-x
日期:2002.2
A number of aliphatic diamines and amino-alcohols and several of their alkyl, acyl and carbamoyl derivatives, have been synthesised and evaluated in vitro on cultures of Leishmania spp. In general, diamine derivatives resulted to be more potent than their amino-alcohol or amino-ether analogues. Two diamine derivatives (8b and 9d) and one amino-alcohol (6a) showed a fair inhibition of parasite growth, at concentrations below 10 mug/mL, with potencies close to that of the reference drug, amphotericin B. Some SAR considerations have been deduced. (C) 2002 Elsevier Science Ltd. All rights reserved.
Induction of promotive rather than suppressive immune responses from a novel NKT cell repertoire Vα19 NKT cell with α-mannosyl ceramide analogues consisting of the immunosuppressant ISP-I as the sphingosine unit
A 2-substituted 2-aminopropane-1,3-diol or 2-aminoethanol is the minimum structure required for the immunosuppressive activity of ISP-I, an antibiotic isolated from the culture broth of Isaria sinclairil. A series of alpha-mannosyl ceramide (alpha-ManCer) analogues was derived from 2-substituted 2-aminopropane-1,3-diols or 2-aminoethanols in place of sphingosine. The newly synthesized glycosides were evaluated for their effects on immune responses. In contrast to the immunosuppressive activity of the precursors, the a-ManCer analogues induced immunopromotive responses from invariant V alpha N-J alpha 26 transgenic mouse lymphocytes more effectively than the original a-ManCer. Collectively, it is strongly suggested that the 2-substituted 2-aminopropane-1,3-diols and 2-aminoethanols mimic sphingosine in the alpha-ManCer analogues so that they potentially acquire specific antigenicity toward V alpha 19 NKT cell, a novel NKT cell subset. (c) 2006 Elsevier SAS. All rights reserved.