Project description:Initiation of mineralisation during endochondral ossification is a multistep process and was assumed to correlate with specific interactions of annexins and collagens. Annexins A5 and A6 are postulated to represent the essential annexins promoting cartilage mineralisation. However, skeletal development appears to be normal in annexin A5 or A6 deficient mice. The highly conserved structures of annexins led to the assumption that annexins A5 and A6 may fulfill redundant functions. We now generated mice deficient for both proteins, annexins A5 and A6. Mice were viable, fertile and showed no obvious abnormalities. Assessment of skeletal elements using histological, ultrastructural and peripheral quantitative computed tomography methods revealed that mineralisation and development of the skeleton was not significantly affected in mutant mice. In respect of the lack of an obvious phenotype we now applied microarray analysis to the growth plate to define changes in the transcriptome of juvenile murine growth plates from mutant mice. Global gene expression analysis revealed subtle phenotypes at the transcriptome level of genes involved in cell growth and intermediate metabolism in mutant mice. These data demonstrate that both annexins are dispensable for proper cartilage mineralisation but may affect cell proliferation processes at the transcriptomic level.

2009-02-17 | E-MEXP-1718 | biostudies-arrayexpress

Miz1 is required to maintain physiological levels of autophagic flux_1

Project description:Mice: knock-out of the Miz1 POZ-domain in brain (Miz1DPOZNes) and control mice. The RNA expression in cerebella of of old Miz1 delta POZ mice (1.5 years), old control mice (1.5 years), young Miz1 delta POZ mice (5.5 weeks) and young control mice (5.5 weeks) was compared

2013-10-01 | E-MEXP-3878 | biostudies-arrayexpress

IBI_Pasteur_Sepsis_brain

Project description:Gene transcription was compared in brain between noninfected mice and infected mice after 6h of intraperitoneal infection by Neisseria meningitidis

2011-11-22 | E-MEXP-3014 | biostudies-arrayexpress

Transcription profiling of zebrafish embryos injected with a morpholino targeting LIN9

Project description:TÜAB zebrafish were maintained at 28.5 °C in in 1x Danieau solution (58 mM NaCl, 0.7 mM KCl, 0.4 mM MgSO4, 0.6 mM Ca (NO3)2, 5 mM HEPES, pH 7.6, 0.0001 % Methylene blue). Morpholinos (Gene Tools, Philomath, OR) were designed against Danio rerio lin-9 homolog (Genebank accession NM_001044946). The morpholino (MO) sequences were MO-E1 5´-GTTAGTTTTATTACTCACTCTCGTC-3´ and 5-base mismatch morpholino MO-E1mis 5´-GTTACTTTTAATACTGACTGTCCTC-3´. 7 ng of morpholinos were injected into one cell-stage embryos. 20 embryos per condition (MO E1; MO E1mis) were pooled for RNA purification 24 h post fertilization. Using the two color Quick-Amp Labeling Kit (Agilent; 5190-0444) 100 ng of total RNA were used for cDNA synthesis, mRNA amplification and labeling according to manufacturers instructions. Transcriptional profiling was done on a zebrafish oligo array (Agilent; G2519F AMADID 019161) in a 4 x 44K slide format and analyzed as described before.<br>

2009-03-28 | E-MEXP-2100 | biostudies-arrayexpress

Transcription profiling by array of human natural killer cell lines, normal donors and clinical samples of natural killer cell neoplasms to detect tumor-specific genes

Project description:Comprehensive gene expression profiles of seven NK cell lines and eleven clinical samples of NK cell neoplasm were analyzed to detect tumor-specific genes. The gene expression profiles of NK cells from normal donor were analyzed as control samples.

2011-06-11 | E-MEXP-2996 | biostudies-arrayexpress

IBI_Pasteur_Sepsis_blood

Project description:Gene transcription was compared in blood between noninfected mice and infected mice after 6h of intraperitoneal infection by Neisseria meningitidis

2011-11-22 | E-MEXP-3008 | biostudies-arrayexpress

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