RNA sequencing of Oryza sativa ssp. indica of inbred and derived epilines
Ontology highlight
ABSTRACT:
INSTRUMENT(S): Illumina HiSeq 2000
ORGANISM(S): Oryza sativa Indica Group
SUBMITTER: Plant Systems Biology data submission
PROVIDER: E-MTAB-6983 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
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Project description:The contained data consist of Illumina HiSeq reads generated genomic DNA of Oryza sativa ssp. indica used for WGBS analysis. The inbred control line and derived epilines LR1, LR2 and LR3 of the 4th selfing were analysed using whole-genome bisulfite sequencing. Control and LR2 lines can be found in ArrayExpress E-MTAB-5002 submission, LR1 and LR3 are part of this submission
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Project description:Acupuncture at acupoints GB34 and LR3 has been reported to inhibit nigrostriatal degeneration in parkinsonism models, yet the genes related to this preventive effect of acupuncture on the nigrostriatal dopaminergic system remain elusive. We investigated gene expression profile changes in the striatal region of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced parkinsonism models after acupuncture at the acupoints GB34 and LR3 C57BL/6 mice were divided into four experimental groups; â C: Control, â¡ M: MPTP-treatment only, ⢠MA: MPTP- and acupuncture-treatment at acupoints GB34 and LR3, ⣠MNA: MPTP- and acupuncture-treatment at non-acupoints. Total RNA was isolated from two brains' striatal regions of each experimental group (4 experimental group à 2 samples of each experimental group = total 8 samples).
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Project description:Acupuncture stimulations at GB34 and LR3 inhibit the reduction of tyrosine hydroxylase in the nigrostriatal dopaminergic neurons in the parkinsonism animal models. Especially, behavioral tests showed that acupuncture stimulations improved the motor dysfunction in a previous study. The thalamus is a crucial area for the motor circuit and has been identified as one of the most markedly damaged areas in Parkinson’s disease (PD), so acupuncture stimulations might also have an effect on the thalamic damage. We investigated gene expression profile changes in the thalamic region of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced parkinsonism models after acupuncture at the acupoints GB34 and LR3 C57BL/6 mice were divided into four experimental groups; ① C: Control, ② M: MPTP-treatment only, ③ MA: MPTP- and acupuncture-treatment at acupoints GB34 and LR3, ④ MNA: MPTP- and acupuncture-treatment at non-acupoints. Total RNA was isolated from two brains' thalamic regions of each experimental group (4 experimental group × 2 samples of each experimental group = total 8 samples).
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Project description:It has been shown that acupuncture at acupoints GB34 and LR3 inhibits the degeneration of nigrostriatal neurons in an 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mouse model of Parkinsonâ??s disease. This preventative effect of peripheral acupuncture stimulation is hypothesized to be transmitted through the spinal cord to the nigrostriatal neurons. The gene expression profile changes following acupuncture at the acupoints were investigated in the cervical spinal cord of an MPTP-induced parkinsonism model using an Affymetrix genechip mouse gene 1.0 ST array. C57BL/6 mice were divided into four experimental groups; â? C: Control, â?¡ M: MPTP-treatment only, â?¢ MA: MPTP- and acupuncture-treatment at acupoints GB34 and LR3, â?£ MNA: MPTP- and acupuncture-treatment at non-acupoints. Total RNA was isolated from the cervical spinal cord regions of each experimental group (4 experimental group Ã? 2 samples of each experimental group = total 8 samples).
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Project description:The intent of the experiment was to identify genes that were differentially expressed between dogs affected with anterior cruciate ligament (ACL) rupture and breed-matched controls. Anterior cruciate ligament and knee synovial tissue biopsies were collected from 4 ACL rupture affected cases and 4 unaffected control dogs. Cases and controls were matched as closely as possible based on breed, sex, neutered status, age, and weight. Medications that the dogs were taking at the time of sample collection were also considered. We prioritized sample size and quality above all other variables, therefore, two matched pairs of Golden Retrievers were chosen with two matched pairs of Labrador Retrievers for this analysis. Tissues from cases were collected during knee stabilization surgery. Tissues from unaffected control dogs were collected from dogs undergoing pelvic limb amputation or euthanasia for reasons unrelated to this study. Illumina TruSeq RNA libraries were constructed and 150bp paired-end sequencing was performed using the Illumina Hi-Seq 2500 platform. Table 1. Breed, sex, age, and weight of matched case and control pairs chosen for RNA sequencing analysis Cases Matched Controls Breed Sex Age (yr) Weight (kg) Breed Sex Age (yr) Weight (kg) GR1 CM 8.8 30.5 GR2 CM 14.9 N/A GR3 CM 5.6 44.0 GR4 CM 3.9 34.0 LR1 CM 9.7 36.0 LR2 CM 12.7 28.5 LR3 CM 13.3 36.0 LR4 CM 13.5 35.0 GR = Golden Retriever. LR = Labrador Retriever. CM= castrated male. Weight at the time of death was not available for one dog.
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Project description:The aim of this study is to identify microRNAs (miRNAs) transcriptionnally regulated by retinoic acid (RA). For that purpose we have used the RA-based treatment of the Acute Promyelocytic Leukemia (APL) as a model. This malignancy is characterised by a differentiation arrest of granulopoiesis at the promyelocytic stage. APL is molecularly associated with reciprocal translocations that always involve the retinoic acid receptor a (RARa). In the vast majority of APL cases, a t(15;17) chromosomal translocation fuses the genes encoding the promyelocytic leukemia protein PML and RARa. The resulting PML-RARa is a transcriptional repressor that impedes the expression of RA-regulated genes notably through an aberrant recruitment of transcriptional repressors and histone deacetylases. Consequently, these genes become insensitive to physiological doses (nanoM) of all-trans-retinoic acid (ATRA) but pharmacological doses (microM), overcome the PML-RARa-mediated repression and restore normal transcription and granulocytic differentiation. The restorative effects of RA can be reproduced in vitro in the NB4 cells, which were derived from an APL patient. These cells provide an excellent model to study the transcriptional deregulations that arise in APL and the molecular effects of the anti-cancerous RA-based treatment. We also used in this study the RA-resistant cells, namely NB4-LR1 and NB4-LR2 cells. The NB4-LR1 cells do transcriptionally respond to ATRA but do not maturate. In contrast, the NB4-LR2 cells show a clear defect in RA signaling, as they harbor a truncated form of PML-RAR protein that is not sensitive to pharmacological doses of RA. First, we plan to characterize miRNAs-repressed by PML-RAR. We reasoned that if some miRNAs are repressed by this protein, then pharmacological doses of RA should abolish this repression and lead to an increase in the level of expression of the corresponding miRNAs. NB4, NB4-LR1 and NB4-LR2 cells will thus be treated for 16h with ATRA (1 microM), and miRNAs profiles will be compared. We anticipate that, the expression of a potential miRNA-repressed by PML-RAR should be up-regulated by ATRA in both NB4 and NB4-LR1 cells but remain unchanged in NB4-LR2 cells. This expression pattern should in fact be similar to those observed for known RA-regulated genes, such as RARb, a well characterized target of the RARa and PML-RAR proteins. Importantly, this experimental procedure was already validated with the identification of a miRNA repressed by PML-RAR (patent Lecellier et al. #WO 2006/048553). MiRNAs candidates obtained will then be validated by chromatin immunoprecipitation using anti-RARa and anti-PML antibodies, followed by luciferase assays in presence or absence of ATRA. Keywords: retinoic acid-mediated gene regulation
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Project description:The aim of this study is to identify microRNAs (miRNAs) transcriptionnally regulated by retinoic acid (RA). For that purpose we have used the RA-based treatment of the Acute Promyelocytic Leukemia (APL) as a model. This malignancy is characterised by a differentiation arrest of granulopoiesis at the promyelocytic stage. APL is molecularly associated with reciprocal translocations that always involve the retinoic acid receptor a (RARa). In the vast majority of APL cases, a t(15;17) chromosomal translocation fuses the genes encoding the promyelocytic leukemia protein PML and RARa. The resulting PML-RARa is a transcriptional repressor that impedes the expression of RA-regulated genes notably through an aberrant recruitment of transcriptional repressors and histone deacetylases. Consequently, these genes become insensitive to physiological doses (nanoM) of all-trans-retinoic acid (ATRA) but pharmacological doses (microM), overcome the PML-RARa-mediated repression and restore normal transcription and granulocytic differentiation. The restorative effects of RA can be reproduced in vitro in the NB4 cells, which were derived from an APL patient. These cells provide an excellent model to study the transcriptional deregulations that arise in APL and the molecular effects of the anti-cancerous RA-based treatment. We also used in this study the RA-resistant cells, namely NB4-LR1 and NB4-LR2 cells. The NB4-LR1 cells do transcriptionally respond to ATRA but do not maturate. In contrast, the NB4-LR2 cells show a clear defect in RA signaling, as they harbor a truncated form of PML-RAR protein that is not sensitive to pharmacological doses of RA. First, we plan to characterize miRNAs-repressed by PML-RAR. We reasoned that if some miRNAs are repressed by this protein, then pharmacological doses of RA should abolish this repression and lead to an increase in the level of expression of the corresponding miRNAs. NB4, NB4-LR1 and NB4-LR2 cells will thus be treated for 16h with ATRA (1 microM), and miRNAs profiles will be compared. We anticipate that, the expression of a potential miRNA-repressed by PML-RAR should be up-regulated by ATRA in both NB4 and NB4-LR1 cells but remain unchanged in NB4-LR2 cells. This expression pattern should in fact be similar to those observed for known RA-regulated genes, such as RARb, a well characterized target of the RARa and PML-RAR proteins. Importantly, this experimental procedure was already validated with the identification of a miRNA repressed by PML-RAR (patent Lecellier et al. #WO 2006/048553). MiRNAs candidates obtained will then be validated by chromatin immunoprecipitation using anti-RARa and anti-PML antibodies, followed by luciferase assays in presence or absence of ATRA. Keywords: retinoic acid-mediated gene regulation To characterize miRNAs regulated by PML-RAR.
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