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抗菌肽LL-37与细菌膜POPG相互作用的分子动力学模拟研究 被引量:2
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作者 毛文超 赵立岭 王吉华 《德州学院学报》 2016年第2期27-33,共7页
作为先天免疫系统的主要成分,人源抗菌肽LL-37在保护人类对抗疾病方面起了重要的角色.残基肽段17-29(FK-13)被认为是LL-37行使抗菌功能的核心区域,LL-37能对带负电的细菌膜产生破坏作用,其抗菌活性与二级结构的变化情况有关.用分子动... 作为先天免疫系统的主要成分,人源抗菌肽LL-37在保护人类对抗疾病方面起了重要的角色.残基肽段17-29(FK-13)被认为是LL-37行使抗菌功能的核心区域,LL-37能对带负电的细菌膜产生破坏作用,其抗菌活性与二级结构的变化情况有关.用分子动力学模拟的方法研究了抗菌肽段FK-13与带负电的细菌膜POPG的相互作用.研究发现,库仑作用会使FK-13快速靠近膜的表面,然后像地毯一样覆盖在膜的表面;FK-13仍旧保持部分螺旋结构,并通过引起膜的扰动对膜产生破坏,以实现抗菌功能,而残基18-22是与膜作用的关键残基.研究FK-13与膜的相互作用,不仅可以从原子层面上了解LL-37对细菌膜作用的机理,也为基于LL-37设计高效抗菌药物提供帮助. 展开更多
关键词 分子动力学模拟 抗菌肽段ll-37 细菌膜
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Cationic antimicrobial peptide: LL-37 and its role in periodontitis
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作者 Hansa Jain 《Frontiers in Biology》 CAS CSCD 2017年第2期116-123,共8页
BACKGROUND: Periodomitis i.e. inflammation of the periodontium is a multifactorial disease. Antimicrobial peptides (AMPs) which demonstrate a broad-spectrum of activity against varied number of bacteria, fungi, vir... BACKGROUND: Periodomitis i.e. inflammation of the periodontium is a multifactorial disease. Antimicrobial peptides (AMPs) which demonstrate a broad-spectrum of activity against varied number of bacteria, fungi, viruses, and parasites, and cancerous cells have been linked to periodontitis. The AMPs even possess the caliber of immunomodulation, and are significantly responsive to innate immuno-stimulation and infections. LL-37 plays a salubrious role by preventing and in treatment of chronic forms of periodontitis. OBJECTIVE: In the present work we will review the role of antimicrobial peptide LL-37 in periodontitis. METHODS: A systematic search was carried out from the beginning till August, 2016 using the Pubmed search engine. The keywords included "LL-37," "periodontitis," "Papillon-Lefevre syndrome," "Morbus Kostmann," "Haim-Munk syndrome" along with use of Boolean operator "and." RESULTS: The search resulted in identifying 67 articles which included articles linking LL-37 with periodontitis, articles on Papillon-Lefevre syndrome, Morbus Kostmann, Haim-Munk syndrome, LL-37 and periodontitis and articles on pathogenicity of periodontitis. CONCLUSION: The literature search concluded that LL-37 plays a pivotal role in preventing and treatment of severe form of periodontitis. 展开更多
关键词 ll-37 antimicrobial peptides CATHELICIDIN PERIODONTITIS
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