Comparison of endogenetic microbial community diversity between wild Cordyceps sinensis,artificial C. sinensis and habitat soil / 中国中药杂志

To obtain the difference of the fungal and bacterial community diversity between wild Cordyceps sinensis, artificial C. sinensis and their habitat soil, Illmina Hiseq high-throughput sequencing technology was applied. The results show that Proteobacteria was the dominant bacterial phylum in C. sinensis, Actinobacteria was the dominant bacterial phylum in soil microhabitat, Ophiocordyceps sinensis was the predominant dominant fungus of C. sinensis. The α diversity analysis showed that the fungal diversity of stroma was lower than other parts, and the fungal diversity of wild C. sinensis was lower than that of artificial C. sinensis. The β diversity analysis showed that the fungal and bacterial community diversity of soil microhabitat samples was significantly different from that of C. sinensis. The fungal community diversity was less different between wild and artificial C. sinensis, especially in sclerotia. LEfSe analysis showed a lot of species diversity between wild and artificial C. sinensis. Those different species between wild C. sinensis, artificial C. sinensis and their habitat soil provide ideas for further research on breed and components of C. sinensis.

Mass Spectrometric Analysis of Proteoforms of Cyclophilin A from Human Colorectal Carcinoma Tissues / 分析化学

Cyclophilin A was isolated from human colorectal carcinoma tissues by ultrafiltration,affinity chromatography,and two dimensional electrophoresis.By the aid of Western blot analysis,several isoforms of cyclophilin A were detected.,The tryptic digests from cyclophilin A were analyzed by matrix-assisted laser desorption ionization time-of-flight mass spectrometry as well as electrospray tandem mass spectrometry techniques.Several different modifications such as N-terminal acetylation (Ac-1Met and Ac-2Val) and phosphorylation of 5Thr were identified from these isoforms of cyclophilin A,which represented the majority of the proteoforms of cyclophilin A in this study.In addition,other kinds of modifications such as oxidation and deamidation were also found in these proteoforms.The results indicated that the developed method could be used to rapidly and correctly identify the several proteoforms of cyclophilin A isolated from human colorectal carcinoma tissues.