RNA-seq of the wild-type and amiR-TSB1 Arabidopsis plants
Ontology highlight
ABSTRACT: TSB1 is a key enzyme catalyzing the formation of IAA precursor tryptophan, thus plays a vital role in plant growth, while whether and how TSB1 functions in plant stress response remains unclear. To study the role of TSB1 in the regulation of the expression of gene involved in plant growth and stress tolerance, we performed RNA-seq using the wild-type and amiR-TSB1 mutant plants.
Project description:To investigate the influence of PBRM1 on gene expression, we performed RNA-seq in HCT116 colon cancer cells with or without PBRM1 knock-down by RNAi (both shRNA and siRNA approaches were used), and identified differentially expressed genes in PBRM1 knock-down cells compared to control cells, which shows implications for PBRM1's biological function in colon cancer.
Project description:RNA-seq was to determine the effects of different sizes and different concentrations of polystyrene microspheres on the transcriptome of O. melastigma embryos. O. melastigma treated with artificial seawater were used as controls.
Project description:Hexadecenal, a trans (-2,3-) unsaturated fatty aldehyde, is an intermediate of the sphingolipid degradation pathway. This pathway, induced during cellular stress, involves the conversion of sphingosine-1-phosphate to hexadecenal by Sphingosine-1-Phosphate-Lyase (SPL) in humans and DPL1 in yeast. Hexadecenal is further metabolized to hexadecenoic acid by Fatty Aldehyde Dehydrogenase (ALDH3A2 in humans and HFD1 in yeast). Trans-2-hexadecenal (t-2-hex), has been found to induce mitochondrial dysfunction in a conserved manner from yeast to humans. However, the specific mechanisms and biological targets underlying this lipid-induced mitochondrial inhibition remain largely unknown. In this study, we employed unbiased transcriptomic approaches using the Saccharomyces cerevisiae yeast model to elucidate the principal mechanisms and biological targets associated with t-2-hex-induced mitochondrial dysfunction. To investigate the effects of t-2-hex, we utilized an hfd1 mutant strain lacking the HFD1 gene. This strain exhibited increased sensitivity to t-2-hex treatment compared to wild-type cells. Exponentially growing hfd1 mutant cells were exposed to 100 μM t-2-hex for a duration of 3 hours, while control cells were incubated with the solvent dimethyl sulfoxide (DMSO), in which hexadecenal is dissolved. Total RNA was extracted from both treated and control cells for high-throughput sequencing analysis. Through transcriptomic profiling, we aimed to identify differentially expressed genes, pathways, and regulatory networks associated with t-2-hex-induced mitochondrial dysfunction in yeast. This study provides a comprehensive analysis of the transcriptional response to t-2-hex treatment, shedding light on the molecular mechanisms and potential biological targets underlying lipid-induced mitochondrial dysfunction.
Project description:One-month-old Ocimum americanum var. pilosum plants were treated with 4 ºC for 12 hours. Total RNAs were extracted from these chilling-treated plant leaves and untreated ones. Two seperate replicates of total RNA samples are from different individuals. The genomic DNA residual in each sample was removed by DNase I digestion. Our goal is to get a more particlular knowledge of transcriptional regulation after chilling treatment in such a chilling-hypersensitive herb.
Project description:In this study, the skin tissues were harvested from the three stages of hair follicle cycling (anagen, catagen and telogen) in a fiber-producing goat breed. In total, 63,109,004 raw reads were obtained by Solexa sequencing and 61,125,752 clean reads remained for the small RNA digitalization analysis. This resulted in the identification of 399 conserved miRNAs; among these, 326 miRNAs were expressed in all three follicular cycling stages, whereas 3, 12 and 11 miRNAs were specifically expressed in anagen, catagen, and telogen, respectively. We also identified 172 potential novel miRNAs by Mireap, 36 miRNAs were expressed in all three cycling stages, whereas 23, 29 and 44 miRNAs were specifically expressed in anagen, catagen, and telogen, respectively. Gene Ontology and KEGG pathway analyses indicated that five major biological pathways (Metabolic pathways, Pathways in cancer, MAPK signalling pathway, Endocytosis and Focal adhesion) accounting for 23.08% of target genes among 278 biological functions, indicating that these pathways are likely to play significant roles during hair cycling. the skin tissues were harvested from the three stages of hair follicle cycling (anagen, catagen and telogen) in a fiber-producing goat breed
Project description:The observation that human Pluripotent Stem Cells (hPSCs) may acquire non-random genetic changes during prolonged culture is a major concern for their use in regenerative medicine and disease modelling. The mechanisms through which genetically variant cells are selected for in culture remain poorly characterized. We have shown that the dominance of variant hPSCs with enhanced growth rates is enhanced through competitive interactions resulting in the elimination of the slower growing loser population. This experiment compares the gene expression of winner (H7v1,12,17q,20q-GFP) and loser (H7v1q) grown either in separate culture or competitively in co-culture together.
Project description:To test the function and regulated genes of ARID3A gene, we conducted lentivirus-mediated short hairpin RNA (shRNA) against ARID3A in K562 cell line.
Project description:Mesorhizobium huakuii 7653R is an M-NM-1-proteobacterium that occurs either in a nitrogen-fixing symbiosis with its host plant, A. sinicus, or free-living in the soil. We performed RNA-Seq on free-living cells grown in rich media and in bacteroids isolated from root nodules to understand how M. huakuii 7653R responds to alterations in its environment and to the physiological changes that occur during bacteroid differentiation. Understand how M. huakuii 7653R responds to alterations in its environment and to the physiological changes that occur during bacteroid differentiation. Examination of mRNA levels in free-living cells and bacteroids at 32 days postinoculation
Project description:Background: WitchesM-bM-^@M-^Y broom disease of Mexican lime (Citrus aurantifolia L.), which is caused by the phytoplasma M-bM-^@M-^\Candidatus Phytoplasma aurantifoliaM-bM-^@M-^], is a devastating disease that results in significant economic losses. Plants adapt to abiotic stresses by regulating gene expression at the transcriptional and post-transcriptional levels. MicroRNAs (miRNAs) are a recently identified family of molecules that regulate plant responses to environmental stresses through post-transcriptional gene silencing. Methods: Using a high-throughput approach to sequence small RNAs, we compared the expression profiles of miRNAs in healthy Mexican lime trees and in plants infected with M-bM-^@M-^\Ca. Phytoplasma aurantifoliaM-bM-^@M-^]. Results: Our results demonstrated the involvement of different miRNAs in the response of Mexican lime trees to infection by M-bM-^@M-^\Ca. Phytoplasma aurantifoliaM-bM-^@M-^]. We identified miRNA families that are expressed differentially upon infection with phytoplasmas. Most of the miRNAs had variants with small sequence variations (isomiRs), which are expressed differentially in response to pathogen infection. Conclusions: It is likely that the miRNAs that are expressed differentially in healthy and phytoplasma-infected Mexican lime trees are involved in coordinating the regulation of hormonal, nutritional, and stress signalling pathways, and the complex interactions between them. Future research to elucidate the roles of these miRNAs should improve our understanding of the level of diversity of specific plant responses to phytoplasmas. Small mRNA profiles of healthy (H) and Phytoplasma-infected Mexican lime trees were generated by deep sequencing, six replicate, using Illumina Hiseq2000
Project description:The leaf of Chinese cabbage is the major place of photosynthesis, the mutation of leaf may directly affect the rate of plant growth and development and the formation of leafy head, and ultimately influence the yield and quality of Chinese cabbage. We identified a developmentally retarded mutant (drm) exhibiting stable inheritance, which was derived from Chinese cabbage DH line âFTâ using a combination of isolated microspore culture and radiation treatment (60Co γ-rays). The drm exhibited slow growth and development at the seedling and heading stages, leading to the production of a tiny, leafy head, as well as chlorophyll-deficient leaves, especially in seedlings. Genetic analysis indicated that the phenotype of drm was controlled by a single recessive nuclear gene. Compared with wild-type line âFTâ, the drmâs chlorophyll content was significantly reduced and its chloroplast structure was abnormal. Moreover, the photosynthetic efficiency and chlorophyll fluorescence parameters were significantly decreased. The changes in leaf color, combined with these altered physiological characters may influence the growth and development of plant, ultimately resulting in the developmentally retarded phenotype of drm. To further understand the molecular regulatory mechanisms of phenotypic differences between âFTâ and drm, comparative transcriptome analysis were performed using RNA-Seq, a total of 338 differentially expressed genes (DEGs) were detected between âFTâ and drm. According to GO and KEGG pathway analysis, a number of DEGs which involved in the chlorophyll degradation and photosynthesis were identified, such as chlorophyllase and ribulose-1,5-bisphosphate carboxylase/oxygenase. In addition, the expression patterns of 12 DEGs, including three chlorophyll degradation- and photosynthesis-related genes and nine randomly selected genes, were confirmed by qRT-PCR. Numerous single nucleotide polymorphisms were also identified, providing a valuable resource for research and molecular marker-assistant breeding in Chinese cabbage. These results contribute to our understanding of the molecular regulatory mechanisms underlying growth and development and lay the foundation for future genetic and functional genomics studies in Chinese cabbage. The RNA from the third true leaves (day 15 to day 24 after the appearance of the third true leaves) of a developmentally retarded mutant (drm) and its wild type âFTâ in Chinese cabbage were sequenced by RNA-Seq, in triplicate.