Dataset Information

Compartmentalisation of m6A (N6-methyladenosine) methylated RNA in somatic or axonal subcellular locations is dependent on Nerve Growth Factor (NGF) state in sympathetic neurons [Axon-meRIP-seq]

ABSTRACT: Sympathetic neurons were culture in compartmentalised chambers in medium with NGF (control condition). Cells were then subjected to NGF starvation for 18 hours followed by 1 hour of restimulation. RNA was collected from either cell bodies (CB) or axons (Ax) from these neurons for meRIP-seq. Here, we find a strong compartmentalisation effect, in which RNA is hypermethylated in axons in both control and restimulated conditions. We also find that a select few RNA species are hypermethylated in restimulated axons compared to control axons, suggesting a fast time-dependent function for m6A marks in these RNAs.

ORGANISM(S): Mus musculus

PROVIDER: GSE336756 | GEO | 2026/07/01

REPOSITORIES: GEO

ACCESS DATA

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Project description:The subcellular localization of specific mRNAs is an evolutionary conserved mechanism that underlies the establishment of cellular polarity and specialized cell functions. In neurons, mRNA trafficking and local protein translation in dendrites provides an important mechanism that mediates synaptic development and plasticity. The significance of mRNA targeting and protein synthesis in axons, however, is still unclear. Only a small number of transcripts have been identified in axons to date, and their contribution to axon growth and neuronal survival remains largely unknown. Here, we report the results of a novel screen that allowed the separate identification of mRNAs localized in cell bodies and in axons of developing neurons. Using compartmentalized cultures of sympathetic neurons and Sequential Analysis of Gene Expression (SAGE), the screen identified more than 200 axonal mRNAs, including ones that encode cytoskeletal proteins and proteins that function in neural development and signal transduction. Importantly, several classes of transcripts were selectively enriched in axons, indicating that an active process drives the targeting of specific mRNAs from the cell bodies to the axons. This study is the first comprehensive and unbiased analysis of mRNA localization in subcellular domains of any neuronal cell type. We used compartmentalized chambers to culture neonatal rat sympathetic neurons (Campenot, 1977). In these cultures, the cell bodies are separated from the distal axons by a 1 mm wide Teflon divider, which maintains the cell bodies and axon terminals in separate fluid compartments. Primary rat sympathetic neurons are especially suitable for compartmentalized culture because they can be grown as a highly homogeneous population without glial cells. Neurons were seeded in the central compartment with nerve growth factor (NGF), and after a few days, the NGF was lowered in this compartment and supplied only to the peripheral compartment to stimulate axon growth. The anti-mitotic agent cytosine arabinoside C (Ara-C) was added to both compartments to remove non-neuronal cells. mRNA was then isolated after 12 days in culture (DIV) from cell body or axon compartments. As the initial mRNA content in axons was not sufficient to perform the SAGE analysis, both axon and cell body mRNAs were subjected to two rounds of linear amplification to obtain antisense RNA (aRNA). The amplified aRNA was then reverse transcribed and second strand synthesis was performed to proceed with the SAGE assay using the LongSAGE kit (Invitrogen) according to the manufacturer’s protocol.

Dataset Information

Compartmentalisation of m6A (N6-methyladenosine) methylated RNA in somatic or axonal subcellular locations is dependent on Nerve Growth Factor (NGF) state in sympathetic neurons [Axon-meRIP-seq]

Dataset's files

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets