当前位置: X-MOL 学术ACS Nano › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Bioengineering Bacterially Derived Immunomodulants: A Therapeutic Approach to Inflammatory Bowel Disease
ACS Nano ( IF 15.8 ) Pub Date : 2017-09-05 00:00:00 , DOI: 10.1021/acsnano.7b03239
Lina Herrera Estrada 1 , Huixia Wu 2 , Kevin Ling 1 , Guikai Zhang 2 , Ronen Sumagin 2 , Charles A. Parkos 2 , Rheinallt M. Jones 2 , Julie A. Champion 1 , Andrew S. Neish 2
Affiliation  

Bacterial enteric pathogens have evolved efficient mechanisms to suppress mammalian inflammatory and immunoregulatory pathways. By exploiting the evolutionary relationship between the gut and pathogenic bacteria, we have developed a potential mucosal therapeutic. Our findings suggest that engineered preparations of the Salmonella acetyltransferase, AvrA, suppress acute inflammatory responses such as those observed in inflammatory bowel disease (IBD). We created 125 nm diameter cross-linked protein nanoparticles directly from AvrA and carrier protein to deliver AvrA in the absence of Salmonella. AvrA nanoparticles are internalized in vitro and in vivo into barrier epithelial and lamina propria monocytic cells. AvrA nanoparticles inhibit inflammatory signaling and confer cytoprotection in vitro, and in murine colitis models, we observe decreased clinical and histological indices of inflammation. Thus, we have combined naturally evolved immunomodulatory proteins with modern bioengineering to produce AvrA nanoparticles, a potential treatment for IBD.

中文翻译:

生物工程细菌衍生的免疫调节剂:炎症性肠病的治疗方法。

细菌性肠病原体已经发展出抑制哺乳动物炎症和免疫调节途径的有效机制。通过利用肠道和致病细菌之间的进化关系,我们开发了一种潜在的粘膜治疗剂。我们的发现表明,沙门氏菌乙酰转移酶AvrA的工程制剂可以抑制急性炎症反应,例如在炎症性肠病(IBD)中观察到的反应。我们直接从AvrA和载体蛋白创建了直径为125 nm的交联蛋白纳米颗粒,以在不存在沙门氏菌的情况下提供AvrA 。阿夫拉纳米颗粒被内化在体外体内进入屏障上皮和固有层单核细胞。AvrA纳米颗粒可在体外抑制炎症信号并赋予细胞保护作用,在鼠结肠炎模型中,我们观察到炎症的临床和组织学指标下降。因此,我们将自然进化的免疫调节蛋白与现代生物工程技术相结合,以生产AvrA纳米颗粒,这是IBD的潜在治疗方法。
更新日期:2017-09-05
down
wechat
bug