Augmented inhibitory effect of superoxide dismutase on superoxide anion release from macrophages by chemical modification with polysaccharide and attenuation effects on radiation-induced inflammatory cytokine expression in vitro

2009 ◽  
Vol 17 (3) ◽  
pp. 216-224 ◽  
Author(s):  
Jinfeng Liu ◽  
Li Teng ◽  
Chunhui Liu ◽  
Likuan Hu ◽  
Yonggang Wang ◽  
...  
2020 ◽  
Author(s):  
Bhavnita Soni ◽  
Shailza Singh

AbstractMacrophage phenotype plays a crucial role in the pathogenesis of Leishmanial infection. Pro-inflammatory cytokines are the key regulators that eliminate the infection induced by Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway. Suppressor of cytokine signaling (SOCS) is a well-known negative feedback regulator of JAK/STAT pathway. However, change in expression levels of SOCS in correlation with the establishment of infection is not well understood. Mathematical modeling of IL6 signaling pathway have helped identified the role of SOCS1 in establishment of infection. Furthermore, the ratio of SOCS1 and SOCS3 has been quantified both in silico as well as in vitro, indicating an immune axis which governs the macrophage phenotype during L. major infection. The ability of SOCS1 protein to inhibit the JAK/STAT1 signaling pathway and thereby decreasing pro-inflammatory cytokine expression makes it a strong candidate for therapeutic intervention. Using synthetic biology approaches, peptide based immuno-regulatory circuit have been designed to target the activity of SOCS1 which can restore pro-inflammatory cytokine expression during infection.


2017 ◽  
Vol 27 (7) ◽  
pp. 1530-1537 ◽  
Author(s):  
Natalija Knežević Teofilović ◽  
Mahjoub Bihi ◽  
Marijana Radić Stojković ◽  
Lidija M. Tumir ◽  
Katja Ester ◽  
...  

Author(s):  
Nina B. Melnikova ◽  
Olga N. Solovyova ◽  
Evgeni N. Evgeni N. Kochetkov

The review is devoted to an assessment of the current level of use of biomimetic approaches to the study of the properties of known drugs and the development of new drugs. In this review, we consider the main biological functions of superoxide dismutase, namely the catalytic decomposition of toxic superoxide anion of oxygen to the molecular form of oxygen and protection against induced apoptosis. The biomimetic enzymes-Mn- and TEMPO-containing equivalents of superoxide dismutase SOD with antitumor and antioxidant activity were discussed more detail. The relationship between the properties and activity of SOD mimetics with their structure among them the nature of the anion and ligands, the coordination number, the geometry of the presence of conjugated bonds, and other parameters of the molecules. The study of the properties of Mn-SOD mimetics makes it possible to develop a new class of drugs successfully tested by in vivo and in vitro experiments and which are at the stages of clinical trials. Stable TEMPO radicals containing compounds are able to perform SOD functions, exhibiting antioxidant activity in relation not only to superoxide-anion, but also to peroxynitrile, and moreover to act as a spin label. The biomimetic membrane systems (monolayers, planar lipid bilayers, liposomes and other nano-sized objects) are discussed too for studying properties in in vitro experiments and for delivering potent and medicinal substances. The biomimetic approach combination allows to create the new promising drugs, including those based on SOD mimetics, and to develop the synthetic analogues of biologically active substances and methods of their delivery. The advantages of such dosage forms are lower toxicity of the preparations, lack of immunogenicity and a decrease in the dose of potent drugs.


2006 ◽  
Vol 20 (4) ◽  
Author(s):  
Cathy M Mueller ◽  
Yin‐yao Lin ◽  
Domenico Viterbo ◽  
Joelle Pierre ◽  
Shirley A Murray ◽  
...  

2018 ◽  
Vol 56 ◽  
pp. 135-142 ◽  
Author(s):  
Jeong-Min Lim ◽  
Bina Lee ◽  
Ju-Hee Min ◽  
Eun-Young Kim ◽  
Jae-Hyun Kim ◽  
...  

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