Project description:Pistacia chinensis Bunge is known as dioecious, but we have found wild monoecious individuals. In order to screen the candidate genes which may influence the sex expression or floral phenotypic differences of P. chinensis, the inflorescence buds for different sex types associated with the sex differentiation were selected and tested for small RNA sequencing. Sex-specific differentially expressed small RNA were discovered, combined with real-time PCR data, the regulation patterns of various sex types were first revealed. Our study represents the first detailed analysis of small RNA sequencing, providing more clues for understanding the mechanism of sex determination on P. chinensis.
Project description:The nematode Caenorhabditis elegans was treated with extracts of the Traditional Chinese Medicine plants Cuscuta chinensis and Eucommia ulmoides from the L4 stage. In aged worms (on the 7th and 12th day of adulthood) different health parameters were determined. Besides the prolongation of lifespan, we found that C. chinensis improved the swimming behavior, pharyngeal pumping rate, stress resistance, mechanosensation and memory of aged C. elegans. Furthermore, the extract treatment reduced the autofluorescence, which is a known biomarker of ageing. Thus, we concluded that C. chinensis is an overall healthspan enhancer. In contrast, the E. ulmoides extract specifically enhanced the lifespan and stress resistance of aged C. elegans, but did not improve any other health aspect. To reveal the mechanism behind the healthspan enhancing effects of C. chinensis, the transcriptome of treated and untreated C. elegans on the 12th day of adulthood was analysed. For comparison purposes, E. ulmoides treated nematodes were included in the analysis.
Project description:Analysis of the differential transcriptome of DC derived from tissue vs. LN origin. The overall hypothesis is these data would reveal how migratory DC may be differently programmed from classical DC and might also suggest difference within migratory DC subsets relating to function.
Project description:We reported the application of high-throughput sequencing technology (RNA-seq) for the transcriptome of T. chinensis cells and the transcriptional alternatives of that responded to MeJA were comprehensively and quantitatively assessed with high-throughput sequencing technology (RNA-seq). By sequencing > 29 million reads (200 bp in length) of cDNA from each of MeJA-treated T. chinensis cells at 16 h (T16) and the control (T0), we identified 46,581 transcripts and uncovered 13,469 genes differentially expressed in response to MeJA. We provided functional clues for understanding the regulation mechanisms of MeJA-mediated defense responses and taxol biosynthesis.
Project description:Dendritic cells (DCs) uniquely direct the adaptive immune response towards activation or inhibition, yet little is known how these opposite programs are regulated at the transcriptional level. Here we applied genome-wide approaches to delineate the molecular function of DC-Specific transCRIPT (DC-SCRIPT/ZNF366), an 11 Zn finger-containing transcription factor potentiating DC-function by limiting IL-10 production. Transcriptome analysis identified DC-SCRIPT to affect expression of genes involved in MAPK signaling, and ChIP-Seq analysis showed binding of DC-SCRIPT to GA-rich enhancers nearby genes encoding MAPK Dual-Specificity Phosphatases (DUSPs). Functional studies demonstrated that DC-SCRIPT-knockdown DCs express much less DUSP4 and exhibit increased phosphorylation of all the three major MAPKs (ERK, JNK and p38). Enhanced ERK signaling in DC-SCRIPT-knockdown DCs led to higher production of the immune-inhibitory cytokine IL-10, which could be reverted by DUSP4 overexpression. These results delineate the molecular mechanism DC-SCRIPT employs to limit IL-10 production in DCs, thereby fine-tuning these professional antigen-presenting cells towards immune activation.