Liver transcriptome analysis of juvenile largemouth bass under lead exposure by RNA-seq
Ontology highlight
ABSTRACT:
ORGANISM(S): Micropterus salmoides
PROVIDER: GSE124986 | GEO | 2019/01/12
REPOSITORIES: GEO
Similar Datasets
Project description:A novel custom microarray for largemouth bass (Micropterus salmoides) was designed from sequences obtained from a normalized cDNA library using the 454 Life Sciences GS-20 pyrosequencer. The GS-20 yielded in excess of 58 million bases of high-quality sequence. The sequence information was combined with 2,616 reads obtained by traditional suppressive subtractive hybridizations to derive a total of 31,391 unique sequences. Annotation and coding sequences were predicted for these transcripts where possible. 16,350 annotated transcripts were selected as target sequences for the design of the custom largemouth bass oligonucleotide microarray. The microarray was validated by examining the transcriptomic response in male largemouth bass exposed to 17 -oestradiol. Transcriptomic responses were assessed in liver and gonad, and indicated gene expression profiles typical of exposure to oestradiol. The results demonstrate the potential to rapidly create the tools necessary to assess large scale transcriptional responses in non-model species, paving the way for expanded impact of toxicogenomics in ecotoxicology. Keywords: E2 exposure, array validation This experiment tested two organs - liver and gonad from either E2-exposed or control fish, 4 fish (biological replicates) per treament (control and E2).
2010-05-25 | E-GEOD-10693 | biostudies-arrayexpress
Project description:A novel custom microarray for largemouth bass (Micropterus salmoides) was designed from sequences obtained from a normalized cDNA library using the 454 Life Sciences GS-20 pyrosequencer. The GS-20 yielded in excess of 58 million bases of high-quality sequence. The sequence information was combined with 2,616 reads obtained by traditional suppressive subtractive hybridizations to derive a total of 31,391 unique sequences. Annotation and coding sequences were predicted for these transcripts where possible. 16,350 annotated transcripts were selected as target sequences for the design of the custom largemouth bass oligonucleotide microarray. The microarray was validated by examining the transcriptomic response in male largemouth bass exposed to 17 -oestradiol. Transcriptomic responses were assessed in liver and gonad, and indicated gene expression profiles typical of exposure to oestradiol. The results demonstrate the potential to rapidly create the tools necessary to assess large scale transcriptional responses in non-model species, paving the way for expanded impact of toxicogenomics in ecotoxicology. Keywords: E2 exposure, array validation
2008-08-01 | GSE10693 | GEO
Project description:In the present study, we used NGST to characterize mRNA-seq of control-, moderate hypoxia-treated and severe hypoxia-treated Micropterus salmoides livers to elucidate the molecular mechanisms of hypoxia adaptation. This is the first report on integrated analysis of the tissue specific and temporal changes in gene expression in largemouth bass (Micropterus salmoides) exposed to hypoxia could reveal mechanisms of hypoxia adaptation. We provide a good case study with which to analyse mRNA expression and profile non-model fish species using NGST.
2020-07-22 | GSE134616 | GEO
Project description:Intensive aquaculture and environmental changes will inevitably lead to hypoxic stress for largemouth bass (Micropterus salmoides). To better understand the hypoxia responds mechanisms of largemouth bass, we compared the miRNA profile in liver under different environmental DO to determine which miRNAs are most affected during hypoxia. A total of 266 miRNAs were identified, and 84 miRNAs were differentially expressed compared with in control group. GO and KEGG analysis indicated that the miRNAs may play important roles in environment information processing. Specifically, we considered the VEGF signaling pathway, Phosphatidylinositol signaling system and MAPK signaling pathway, the results show that, the 13 miRNAs (miR-15b-5p, miR-30a-3p, miR-133a-3p, miR-19d-5p, miR-1288-3p, miR456, miR-96-5p, miR-23a-3p, miR-23b, miR-214, miR-24, miR-20a-3p and miR-2188-5p) involved in these three pathways are significantly down-regulated during hypoxia stress. And 12 target genes of these miRNAs were showed a higher degree of expression. We found the obvious negative correlation between miRNA and their target mRNAs, providing several miRNA-mRNA interaction networks in largemouth bass in response to hypoxia. Although relatively little information is currently available concerning the biological function of miRNAs identified to date, we strongly suggest that miRNAs play an important role in modulating gene expression involved in the physiological response to hypoxic stress in the fish liver.
2021-01-20 | GSE143641 | GEO
Project description:In this study, both male and female sexually regressed largemouth bass (Micropterus salmoides) (LMB) were fed a nominal concentration of 3.0 mg dieldrin/kg in feed for 60 days. A third group of male LMB was fed both 3.0 mg dieldrin/kg dieldrin and 0.7 mg E2/kg in feed. E2 was used as a model compound to elicit estrogenic effects via ER signaling.
2011-04-17 | GSE27963 | GEO
Project description:Long noncoding RNAs (lncRNAs) are non-protein coding RNAs with a length of more than 200 bp, which play a vital regulatory role in intestinal immunity. Exposure to high temperature leads to death in many fish species, which is implicated in fish enteritis. Our study showed that fish enteritis was induced by acute heat stress. To date, which lncRNAs are participated in this process is still unclear. In the present study, based on the intestinal sequencing data of largemouth bass Micropterus salmoides, a total of 347,351,492 clean reads were generated from six cDNA libraries. Among them, 3399 novel lncRNA transcripts from 2488 lncRNA genes were identified. As expected, these lncRNAs exhibited shorter transcript lengths than protein-coding genes similar to those lncRNAs reported from other fish species. In total, 216 novel lncRNAs were differentially expressed (DE) in largemouth bass intestine (absolute log2 fold change > 2 and p-value < 0.05) and that 210 neighboring genes were cis-regulated by these DE-lncRNAs. An analysis of GO/KEGG enrichment showed that most of these cis-genes seemed to be significantly enriched in immune regulation (p < 0.05) and lncRNA MSTRG.8573 had an important role in regulating jak-stat signaling pathway during this process. Through this study, we showed a catalog of novel DE-lncRNAs involved in the occurrence of enteritis in largemouth bass under acute heat stress, which could provide some useful references by regulating lncRNAs to solve the heat stress-induced fish enteritis for further studies.
2024-07-01 | GSE236409 | GEO
Project description:White bass (Morone chrysops) are a popular sportfish throughout the southern United States, and one parent of the commercially successful hybrid striped bass (M. chrysops x M. saxatilis). Currently, white bass are cultured using diets formulated for other carnivorous fish, such as largemouth bass (Micropterus salmoides) or hybrid striped bass and contain a significant percentage of marine fish meal. Since there are no studies regarding the utilization of alternative proteins in this species, we evaluated global gene expression of white bass fed diets in which fish meal was partially or totally replaced by various combinations of soybean meal, poultry by-product meal, canola meal, soy protein concentrate, wheat gluten, or a commercial protein blend (Pro-Cision). Significant differential expressed genes and gene ontology of pairwise comparisons between control diet and each test diet are presented and discussed.
2024-02-14 | GSE220235 | GEO
Project description:In this study, both male and female sexually regressed largemouth bass (Micropterus salmoides) (LMB) were fed a nominal concentration of 3.0 mg dieldrin/kg in feed for 60 days. A third group of male LMB was fed both 3.0 mg dieldrin/kg dieldrin and 0.7 mg E2/kg in feed. E2 was used as a model compound to elicit estrogenic effects via ER signaling. There were four samples analyzed for 1) control males 2) control females 3) males fed 3 mg/kg dieldrin 4) females fed 3.0 mg/kg dieldrin, and 5) males fed 3.0 mg/kg dieldrin + 0.7 mg/kg E2. There was a total of 20 microarrays and sample processed.
2011-04-17 | E-GEOD-27963 | biostudies-arrayexpress
Project description:This study used an emerging analytical technology (cDNA microarrays) to assess the potential effects of PFC exposure on largemouth bass in TCMA lakes. Microarrays simultaneously measure the expression of thousands of genes in various tissues from organisms exposed to different environmental conditions. From this large data set, biomarkers (i.e., genes that are expressed in response to an exposure to known stressors) and bioindicators (e.g., suites of genes that correspond to changes in organism health) can be simultaneously measured to clarify the relationship between contaminant exposure and organism health. Based on current scientific literature, we hypothesized that gene expression patterns would be altered in fish exposed to PFCs (as compared with fish from reference lakes), and that the magnitude of these changes would correspond to the concentrations of PFCs present throughout TCMA lakes. Patterns of gene expression in largemouth bass observed across the TCMA lakes corresponded closely with PFC concentration. Concentrations of PFCs in largemouth bass varied significantly across the sampled lakes, where the lowest concentrations were found in Steiger and Upper Prior Lakes and the highest concentrations were found in Calhoun and Twin Lakes. Patterns of gene expression were most different (relative to controls) in fish with the highest PFC tissue concentrations, where fish from Twin and Calhoun Lakes were observed to have between 5437 and 5936 differentially expressed genes in liver and gonad tissues. Although gene expression patterns demonstrated a high degree of correlation with PFC concentrations, microarray data also suggest there are likely additional factors influencing gene expression patterns in largemouth bass in TCMA lakes.
2014-07-31 | GSE57684 | GEO
Project description:Live fish transport often results in mass mortality, but the underlying mechanisms are not well known. Largemouth bass (LMB, Micropterus salmoides) juveniles were subjected to 4-hour transportation followed by 5 days of recovery. Mortality (33.61 ± 10.58 %) of the transported fish mainly occurred between 2 and 3 days of recovery. Except for the dead fish, the survivors demonstrating abnormal symptoms were considered more sensitive to the transport stress than the normal ones. Liver of the abnormal fish had significantly (p < 0.05) lower glutathione (GSH) content and superoxide dismutase (SOD) activity, and irregular cellular morphology. The liver and spleen collected before transportation (T0), at the end of transportation (Te), after 1 day of recovery (R1d), and after 3, 4 and 5 days of recovery (R3d, R4d and R5d, from both the normal and abnormal fish) were subjected to RNA-sequencing. Time series gene expression data of the T0, Te, R1d, R3d-R5d (from the normal fish) samples were analyzed to explore transcriptional responses elicited by the transport stress. Transportation-activated transcriptional regulations could be classified as immediate response (Te), and early (R1d) and late recovery (R3d to R5d) phase in both tissues. High tissue specificity was found for functional enrichments of the up-regulated genes. The up-regulated genes of the liver are highly enriched in cholesterol, sterol and steroid biosynthesis, while those of the spleen are primarily associated with hemopoiesis and immune response. However, large numbers of functional enrichments were shared by the down-regulated genes of the liver and spleen, especially during the recovery phase. Representatives of the depressed processes included neurogenesis, angiogenesis and cell migration, etc. Moreover, large numbers of differentially expressed genes (DEGs) were identified between the normal and abnormal fish. Functional enrichment analyses for the DEGs revealed that failing to terminate the stress responses in the spleen and over depression of the physiological roles of the liver are critical for stress susceptibility of the abnormal fish. Furthermore, an array of core genes associated with stress susceptibility were identified. Our data provide novel insights into the genetic factors underlying susceptibility of LMB to the transport stress.
2024-09-24 | GSE277644 | GEO