Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA217318 | ENA |
REPOSITORIES: ENA
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Project description:3 subtypes of cortical projection neurons were purified by fluorescence-activated cell sorting (FACS) at 4 different stages of development from mouse cortex. A detailed description of the data set is described in Arlotta, P et al (2005) and Molyneaux, BJ et al (2009). The hybridization cocktails used here were originally applied to the Affymetrix mouse 430A arrays and submitted as GEO accession number GSE2039. The same hybridization cocktails were then applied to the Affymetrix mouse 430 2.0 arrays, and those data are contained in this series. Experiment Overall Design: Three subtypes of cortical neurons were purified by FACS at multiple stages of mouse brain development. The neuron subtypes are: corticospinal motor neurons (CSMN), callosal projection neurons (CPN), and corticotectal projection neurons (CTPN). The stages of development included embryonic day 18 (E18), postnatal day 3 (P3), postnatal day 6 (P6), and postnatal day 14 (P14). CSMN and CPN were analyzed at all four stages, while CTPN were only analyzed at P14. The replicates included in the data set are all true biological replicates with independent sample collection for each.
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Project description:3 subtypes of cortical projection neurons were purified by fluorescence-activated cell sorting at 4 different stages of development from mouse cortex. A detailed description of the data set is described in Arlotta, P et al (2005). Keywords = corticospinal motor neuron callosal corticotectal cortex development FACS
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Project description:The scRNA-seq analysis of 75 day old human cerebral organoids grown at the air-liquid interface (ALI-COs) reveals six well-defined major clusters. Cell-type and maturity markers define a (1) distinct population of deep layer subcortical projection neurons, (2) upper layer intracortical (callosal) projection neurons and intermediate progenitors, (3) ventricular and subventricular zone radial glial cells, (4) more mature upper and deep layer neurons, (5) interneurons and (6) actively dividing cells with intermediate progenitor and radial glia markers. In addition, the gene expression profile of these clusters corresponds with their expected functional characteristics appropriate to their maturity. Altogether, our data reflect a full repertoire of cortical neuronal and progenitor identities corresponding with the stages of cortical development in age-matched fetal brains.
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Project description:Amyotrophic Lateral Sclerosis is clinically defined as the combined degeneration of the corticospinal and corticobulbar neurons (CSN) along with the bulbar and spinal motor neurons (SMN). While a growing body of evidence points to the motor cortex, where CSN are located, as the potential initiation site of ALS, little is known about how CSN degenerate. To gain insights into the molecular mechanisms behind CSN selective degeneration, we first developed an approach to purify this neuronal population from the cerebral cortex of adult wild-type and Sod1G86R mice, combining retrograde labelling and Fluorescence Activated Cell Sorting. In parallel, a second population of cortical neurons, the callosal projection neurons (CPN) located in the layers II/III of the cerebral cortex were also purified. CPN and CSN are both cortical excitatory projection neurons but as opposed to CSN, CPN do not degenerate in Sod1G86R mice, and served as control population. CSN and CPN were purified from same animals, at two presymptomatic ages (3 and 60 days) and two symptomatic ages, 90 and 105 days. A total of 57 samples were further processed and analysed (CSN: 30d: n=4 WT and 3 Sod1G86R; 60d: n=4 WT and 4 Sod1G86R; 90d: n=4 WT and 4 Sod1G86R; 105d: n=4 WT and 2 Sod1G86R; CPN: 30d: n=4 WT and 3 Sod1G86R; 60d: n=2 WT and 3 Sod1G86R; 90d: n=4 WT and 4 Sod1G86R; 105d: n=4 WT and 4 Sod1G86R).
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