scholarly journals Design, synthesis and biological evaluation of a new bridged immunosuppressor.

2001 ◽  
Vol 48 (4) ◽  
pp. 1147-1150 ◽  
Author(s):  
Z Szewczuk ◽  
A Wilczyński ◽  
I Petry ◽  
I Z Siemion ◽  
Z Wieczorek

A bridged peptide with the sequence: H-Thr-Pro-Gln-Arg-Gly-Asp-Val-gamma-Abu-Asn-Asp-Gln-Glu-Glu-Thr-Thr-Gly-Val-Val-Ser-Thr-Pro-Leu-Ile-Arg-Asn-Gly-OH was designed to mimic the discontinuous epitope of the HLA-DQ molecule that might interact with CD4. The bridged peptide revealed distinct suppressory effect in the humoral immune response. This result supports our suggestion that the 164-172 region of the HLA-DQ molecule may enhance its interactions with coreceptors, possibly with CD4.

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6352
Author(s):  
Vesna Petrović Peroković ◽  
Željka Car ◽  
Josip Draženović ◽  
Ranko Stojković ◽  
Lidija Milković ◽  
...  

Muramyl dipeptide (MDP) is the smallest peptidoglycan fragment able to trigger the immune response. Structural modification of MDP can lead to the preparation of analogs with improved immunostimulant properties, including desmuramyl peptides (DMPs). The aim of this work was to prepare the desmuramyl peptide (L-Ala-D-Glu)-containing adamantyl-triazole moiety and its mannosylated derivative in order to study their immunomodulatory activities in vivo. The adjuvant activity of the prepared compounds was evaluated in a murine model using ovalbumin as an antigen, and compared to the reference adjuvant ManAdDMP. The results showed that the introduction of the lipophilic adamantyl-triazole moiety at the C-terminus of L-Ala-D-Glu contributes to the immunostimulant activity of DMP, and that mannosylation of DMP modified with adamantyl-triazole causes the amplification of its immunostimulant activity.


2012 ◽  
Vol 9 (2) ◽  
pp. 140-152 ◽  
Author(s):  
Romeo Romagnoli ◽  
Pier Giovanni Baraldi ◽  
Olga Cruz-Lopez ◽  
Maria Kimatrai Salvador ◽  
Delia Preti ◽  
...  

2013 ◽  
Vol 10 (10) ◽  
pp. 935-941
Author(s):  
Yan Tang ◽  
Zhewei Tu ◽  
Jing Sun ◽  
Xiong Zhu ◽  
Kun Liu ◽  
...  

2010 ◽  
Vol 7 (6) ◽  
pp. 415-420 ◽  
Author(s):  
Jinpei Zhou ◽  
Hai Qian ◽  
Huibin Zhang ◽  
Hui Gao ◽  
Wenlong Huang ◽  
...  

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