Project description:This SuperSeries is composed of the following subset Series: GSE5268: Effects of biphenyl on Rhodococcus sp. RHA1 GSE5269: Effects of ethylbenzene on Rhodococcus sp. RHA1 GSE5270: Effects of benzoate on Rhodococcus sp. RHA1 Refer to individual Series
Project description:Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is a persistent nitramine explosive with long-lasting properties. Rhodococcus sp. strain DN22 has been discovered as one of the microorganisms capable of RDX degradation. Despite respectable studies on Rhodococcus sp. strain DN22, the proteins participating in RDX degradation (Oxidoreductase and Cytochrome P450) in the strain remain to be fragments. In this study, complete genome of Rhodococcus sp. strain DN22 was sequenced and analyzed, and the entire sequences of the two genes encoding Oxidoreductase and Cytochrome P450 in Rhodococcus sp. strain DN22 were predicted, which were validated through proteomic data. Besides, despite the identification of certain chemical substances as proposed characterized degradation intermediates of RDX, few studies have investigated the physiological changes and metabolic pathways occurring within Rhodococcus sp. cells when treated with RDX, particularly through the use of mass spectrometry-based omics. Hence, proteomics and metabolomics of Rhodococcus sp. strain DN22 were performed and analyzed with the presence or absence of RDX in the medium. A total of 3186 protein groups were identified and quantified between the two groups, with 117 proteins being significantly differentially expressed proteins. A total of 1056 metabolites were identified after merging positive and negative ion modes, among which 131 metabolites were significantly differential. Through the combined analysis of differential proteomics and metabolomics, several KEGG pathways, including two-component system, ABC transporters, alanine, aspartate and glutamate metabolism, arginine biosynthesis, purine metabolism, nitrogen metabolism, and phosphotransferase system (PTS) were found to be significantly enriched. We expect that our investigation will expand the acquaintance of Rhodococcus sp. strain DN22, and the knowledge of microbial degradation.
Project description:Purpose: To obtain the differentially expressed genes based on post-RNAi transcriptional profiling analysis of females and males, which provide a more comprehensive overview about the effects of Sj-pp1c knockdown on schistosoma developmental and reproduction biology at the molecular level. Methods: Schistosoma japonicum females and males were collected from 21 days post infection worm pairs that untreated (Blank,BLA_FE/M) or treated with combined Sj-pp1c dsRNAs (Sj-pp1c KD,PP1_FE/M) cultured for 7 d in vitro. Total mRNA profiles of females and males were generated by deep sequencing, in triplicate, using Illumina HiSeqTM2000. Results: 41-51 million reads (average 44 million) were obtained for each sample after quality filtering, and 63-67% reads were mapped to S. japonicum reference genome(WormBase ParaSite, http://parasite.wormbase.org/ftp.html; version 7.0) and identified 15,314 transcripts by Tophat (version v2.0.12) and Cufflinks (Version 2.1.1.). 2291 and 229 transcripts showed differentially expressed in males and females, respectively,between the untreated and Sj-pp1c dsRNAs treated group, with adjust P value <0.05. GO analysis showed differentially expressed genes are mainly function in extracellular matrix structural constituent, proteolysis and collagen trimer. Conclusions: We performed analysis on transcriptional profiling of females and males following Sj-pp1c-RNAi by RNA-seq, which provided molecular evidence for the pleiotropic roles that Sj-pp1c plays in schistosome biology.