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Transcriptional changes in oligodendrocyte precursor cells (OPC) and immature oligodendrocytes (O4) of postnatal mouse brain due to Major Facilitator Superfamily Domain containing 2a (Mfsd2a) mediated lipid transport.

ABSTRACT: Transcriptional changes in oligodendrocyte precursor cells (OPC) and immature oligodendrocytes (O4) of postnatal mouse brain due to Major Facilitator Superfamily Domain containing 2a (Mfsd2a) mediated lipid transport.

PROVIDER: PRJNA869600 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21050376_1.fastq.gz	Fastqsanger.gz
	SRR21050376_2.fastq.gz	Fastqsanger.gz
	SRR21050377_1.fastq.gz	Fastqsanger.gz
	SRR21050377_2.fastq.gz	Fastqsanger.gz
	SRR21050378_1.fastq.gz	Fastqsanger.gz

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Transcriptional changes in oligodendrocyte precursor cells (OPC) and immature oligodendrocytes (O4) of postnatal mouse brain due to Major Facilitator Superfamily Domain containing 2a (Mfsd2a) mediated lipid transport.

Project description:Mfsd2a plays an important role in accretion of essential fatty acids such as docosahexaenoic acid (DHA) from the periphery into the brain. Loss of Mfsd2a in humans leads to microcephaly and hypomyelination. The precise impact of lipid species transported by Mfsd2a on myelination is not known. Using OPC specific deletion of Mfsd2a (2aOKO) in mice we found that OPC cell state, differentiation and oligodendrocytes maturation is disrupted resulting in hypomyelination. RNAsequencing and differential gene expression analysis was performed on OPC and O4 cells from postnatal mouse brain to understand the influence of Mfsd2a on oligodendrocyte development.

2023-05-17 | GSE211228 | GEO

Study of vascular endothelial-specific and inducible vascular endothelial-specific deletion of Major Facilitator Superfamily Domain containing 2a (Mfsd2a) in mice.

Project description:Brain development requires a massive increase in brain lipogenesis and accretion of the essential omega-3 fatty acid docosahexaenoic acid (DHA). Brain acquisition of DHA is primarily mediated by the transporter Major Facilitator Superfamily Domain containing 2a (Mfsd2a) expressed in the endothelium of the blood-brain barrier. Mfsd2a transports DHA and other polyunsaturated fatty acids esterified to lysophosphatidylcholine (LPC-DHA). However, the function of Mfsd2a and DHA in brain development is incompletely understood. Using vascular endothelial-specific (2aECKO) and inducible vascular endothelial-specific (2aiECKO) deletion of Mfsd2a in mice, we found Mfsd2a to be uniquely required postnatally at the blood-brain barrier for normal brain growth and DHA accretion, with DHA deficiency preceding the onset of microcephaly. Gene expression profiling analysis of these DHA deficient brains indicated that Srebp-1 and Srebp-2 pathways were highly elevated. Affymetrix gene arrays were used to determine differences in gene expression between 2aECKO or 2aiECKO relative to their respective controls in the developing brain.

2018-07-11 | GSE115971 | GEO

Impact of Major Facilitator Superfamily Domain containing 2a (Mfsd2a) mediated lipid transport on oligodendrocyte lineage development at single cell level.

Project description:Mfsd2a is involved in transport of essential fatty acids such as docosahexaenoic acid (DHA) from the periphery across blood brain barrier (BBB) into the brain parenchyma. Loss of Mfsd2a in humans leads to microcephaly and hypomyelination. The significance of lipid species transported by Mfsd2a on oligodendrocyte lineage development is not known. Using OPC specific deletion of Mfsd2a (2aOKO) in mice we found that OPC cell state, differentiation and oligodendrocytes maturation is disrupted resulting in hypomyelination compared to 2afl/fl controls. Single cell RNAsequencing analysis was performed on total oligodendrocyte population from postnatal mouse brain using Ribo-TRAP mouse lines that labels complete oligodendrocyte lineage with GFP fluorescence to understand the influence of Mfsd2a on oligodendrocyte development.

2023-05-17 | GSE211879 | GEO

Impact of Major Facilitator Superfamily Domain containing 2a (Mfsd2a) mediated lipid transport on oligodendrocyte lineage development at single cell level.

Project description:Impact of Major Facilitator Superfamily Domain containing 2a (Mfsd2a) mediated lipid transport on oligodendrocyte lineage development at single cell level.

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Study of vascular endothelial-specific and inducible vascular endothelial-specific deletion of Major Facilitator Superfamily Domain containing 2a (Mfsd2a) in mice.

Project description:Study of vascular endothelial-specific and inducible vascular endothelial-specific deletion of Major Facilitator Superfamily Domain containing 2a (Mfsd2a) in mice.

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Comparison of wild-type and Mfsd2a KO eye cups

Project description:Eye photoreceptor membrane discs in outer rod segments are highly enriched in the visual pigment rhodopsin and the omega-3 fatty acid docosahexaenote (DHA). The eye acquires DHA from blood, but transporters for DHA uptake across the blood-retinal barrier (BRB) or retinal pigment epithelium have not been identified. Mfsd2a is a newly described sodium-dependent lysophosphatidylcholine symporter expressed at the BRB. Microarrays were used to determine difference in gene expression between wild-type and Mfsd2a KO eye cups. RNA was extracted from eye cups from postnatal day 13 wild-type and Mfsd2a KO mice. Equal amounts of RNA from 6 wild-type eye cups were pooled for the wild-type sample, or 6 Mfsd2a KO eye cups were pooled for the Mfsd2a KO sample. Microarray profiling was done on pooled samples with a RIN cut-off of 7.0 using Mouse 430 2.0 arrays (Affymetrix).

2016-03-23 | E-GEOD-77403 | biostudies-arrayexpress

Major Facilitator Superfamily Domain Containing 7C (Mfsd7c) Mediates the Effects of Heme on Cell Metabolism, Motility and Transcription

Project description:Dysfunctional mutations of major facilitator superfamily domain containing 7C (Mfsd7c) are associated with Fowler's Syndrome. However, beyond its reported activity in heme importation, the function of Mfsd7c is unknown. Herein, we show that Mfsd7c forms complexes with proteins in both mitochondrial and cytoplasmic membranes including components of the electron transport chain (ETC), Fc receptors, and integrin. Cells deficient in Mfsd7c exhibit altered ETC activities with an elevated oxygen consumption rate and heat generation, decreased ATP synthesis and production of reactive oxygen species, and attenuated responses to heme stimulation. Mfsd7c-deficient cells are more motile with increased antibody-dependent cellular phagocytosis (ADCP) activity and exhibit an altered transcriptional response to heme stimulation through transcriptional factors CREB and NF-kB. These results show that Mfsd7c mediates the effects of heme in cell metabolism, motility and transcription, and shed light on how dysfunctional Mfsd7c mutations may contribute to Fowler’s syndrome.

2018-06-08 | GSE83125 | GEO

Expression profile of OPC senescence

Project description:To identify factors involved in OPC senescence, we compared gene expressions between OPC-CG4, OPC-FCS and OPC-Rev. We established OPC senescence model system, in which OPC become senescent in the presence of high concentration of FCS. This phenotypes were kept even when the medium was switched to their optimal serum-free medium.

2011-06-01 | E-GEOD-28093 | biostudies-arrayexpress

Expression profile of OPC senescence

Project description:To identify factors involved in OPC senescence, we compared gene expressions between OPC-CG4, OPC-FCS and OPC-Rev.

2011-06-01 | GSE28093 | GEO

RNA-seq of O4+ oligodendrocyte progenitors isolated from P5 and P60 mice

Project description:Adult oligodendrocyte progenitors (aOPCs) share with their neonatal counterpart (nOPC) the ability to give rise to myelinating oligodendrocytes, but they also display unique functional features. This study addresses the molecular mechanisms underlying the intrinsic differences between these two populations. Using RNA-sequencing and unbiased histone proteomics analysis performed on PDGFRa+ OPCs sorted from a reporter mouse, we define the unique transcriptome and histone marks of aOPCs. We describe the higher levels of genes related to lipid metabolism and myelin sheath, and lower expression of genes related to cycle and proliferation in aOPCs compared to nOPCs. We also identify greater levels of activating H4K8ac and repressive H4K20me3 histone marks in aOPCs compared to nOPCs, and increased occupancy of H4K8ac mark at chromatin locations corresponding to oligodendrocyte-specific genes. Pharmacological inhibition of histone acetylation in neonatal O4+OPCs (nO4+OPCs) and adult O4+OPCs (aO4+OPCs) followed by RNA-sequencing showed a moderate change in the transcriptome of these cells resulting in the decrease of proliferation capacity in aO4+OPCs but not nO4+OPCs. Pharmacological inhibition of H4K20me3 mark was not sufficient to change the transcriptome or functional properties of nO4+OPCs and aO4+OPC. Overall, this study identifies histone acetylation as key in regulating the proliferation of aO4+OPCs.

2024-08-01 | GSE263808 | GEO

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