MRNA Stability and MA Are Major Determinants of Subcellular MRNA Localization in Neurons

Overview

Journal Mol Cell

Publisher Cell Press

Specialty Cell Biology

Date 2023 Jul 14

PMID 37451262

Authors

Inga Loedige

Artem Baranovskii

Samantha Mendonsa

Sayaka Dantsuji

Niko Popitsch

Laura Breimann

Nadja Zerna

Vsevolod Cherepanov

Miha Milek

Stefan Ameres

Marina Chekulaeva

Affiliations

Soon will be listed here.

Abstract

For cells to perform their biological functions, they need to adopt specific shapes and form functionally distinct subcellular compartments. This is achieved in part via an asymmetric distribution of mRNAs within cells. Currently, the main model of mRNA localization involves specific sequences called "zipcodes" that direct mRNAs to their proper locations. However, while thousands of mRNAs localize within cells, only a few zipcodes have been identified, suggesting that additional mechanisms contribute to localization. Here, we assess the role of mRNA stability in localization by combining the isolation of the soma and neurites of mouse primary cortical and mESC-derived neurons, SLAM-seq, mA-RIP-seq, the perturbation of mRNA destabilization mechanisms, and the analysis of multiple mRNA localization datasets. We show that depletion of mRNA destabilization elements, such as mA, AU-rich elements, and suboptimal codons, functions as a mechanism that mediates the localization of mRNAs associated with housekeeping functions to neurites in several types of neurons.

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