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Regulation of the Probability of Mouse Odorant Receptor Gene Choice

MPG-Autoren
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Khan,  Mona
Department of Molecular Neurogenetics, Max Planck Institute of Biophysics, Max Planck Society;

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Vaes,  Evelien
Department of Molecular Neurogenetics, Max Planck Institute of Biophysics, Max Planck Society;

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Mombaerts,  Peter
Department of Molecular Neurogenetics, Max Planck Institute of Biophysics, Max Planck Society;

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Zitation

Khan, M., Vaes, E., & Mombaerts, P. (2011). Regulation of the Probability of Mouse Odorant Receptor Gene Choice. Cell, 147(4), 907-921.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0024-D5C9-4
Zusammenfassung
Each olfactory sensory neuron (OSN) in mouse chooses one of 1,200 odorant receptor (OR) genes for expression. OR genes are chosen for expression by greatly varying numbers of OSNs. The mechanisms that regulate the probability of OR gene choice remain unclear. Here, we have applied the Nano-String platform of fluorescent barcodes and digital readout to measure RNA levels of 577 OR genes in a single reaction, with probes designed against coding sequences. In an inbred mouse strain with a targeted deletion in the P element, we find that this element regulates OR gene choice differentially across its cluster of 24 OR genes. Importantly, the fold changes of NanoString counts in ΔP or ΔH mice are in very close agreement with the fold changes of cell counts, determined by in situ hybridization. Thus, the P and H elements regulate the probability of OR gene choice, not OR transcript level per OSN.