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Related Experiment Video

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Real-Time Monitoring of Aurora kinase A Activation using Conformational FRET Biosensors in Live Cells

Real-Time Monitoring of Aurora kinase A Activation using Conformational FRET Biosensors in Live Cells

Published on: July 30, 2020

Non-coding murine centromeric transcripts associate with and potentiate Aurora B kinase.

Federica Ferri¹, Haniaa Bouzinba-Segard, Guillaume Velasco

¹Institut Cochin, Université Paris Descartes, CNRS UMR8104 and INSERM, U567, Paris, France.

Nucleic Acids Research

|June 23, 2009

Summary

This summary is machine-generated.

Mouse minor satellite RNA regulates Aurora B kinase activity at the centromere during cell division. These non-coding RNAs are crucial for proper centromere complex formation and function, ensuring accurate mitosis.

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Area of Science:

Molecular Biology
Epigenetics
Cell Biology

Background:

Non-coding RNAs play critical roles in biological processes, including chromatin structure.
Centromere-associated complexes are vital for chromosome segregation during cell division.

Purpose of the Study:

To investigate the role of RNA transcribed from mouse centromeric minor satellite repeats in centromere-associated complexes.
To determine the functional implications of minor satellite RNA in regulating mitotic processes.

Main Methods:

Analysis of minor satellite RNA levels during the cell cycle.
Biochemical fractionation to identify RNA components in CENP-A-associated complexes.
Assays to assess Aurora B kinase activity and its dependence on RNA.

Main Results:

Minor satellite RNA levels peak during G2/M phase, coinciding with chromosomal passenger complex protein accumulation.
Murine minor satellite RNA associates with CENP-A and mitotic proteins Aurora B and Survivin.
Aurora B kinase activity is dependent on and potentiated by minor satellite RNA, and RNA depletion effects can be rescued by transcript restitution.

Conclusions:

Minor satellite transcripts are key regulators of the mitotic kinase Aurora B.
These non-coding RNAs are essential partners in the formation and function of centromere-associated complexes.
The study provides functional evidence for the role of minor satellite RNA in mitotic regulation.