Extensive tissue-specific expression variation and novel regulators underlying circadian behavior.

Extensive tissue-specific expression variation and novel regulators underlying circadian behavior.
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DOI:
10.1126/sciadv.abc3781
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发表时间:
2021-01
期刊:
影响因子:
13.6
通讯作者:
Deplancke B
Deplancke B
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Litovchenko M;Meireles-Filho ACA;Frochaux MV;Bevers RPJ;Prunotto A;Anduaga AM;Hollis B;Gardeux V;Braman VS;Russeil JMC;Kadener S;Dal Peraro M;Deplancke B

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A dataset of >700 tissue-specific transcriptomes of D. melanogaster reveals population-level molecular circadian clock variation. Natural genetic variation affects circadian rhythms across the evolutionary tree, but the underlying molecular mechanisms are poorly understood. We investigated population-level, molecular circadian clock variation by generating >700 tissue-specific transcriptomes of Drosophila melanogaster (w1118) and 141 Drosophila Genetic Reference Panel (DGRP) lines. This comprehensive circadian gene expression atlas contains >1700 cycling genes including previously unknown central circadian clock components and tissue-specific regulators. Furthermore, >30% of DGRP lines exhibited aberrant circadian gene expression, revealing abundant genetic variation–mediated, intertissue circadian expression desynchrony. Genetic analysis of one line with the strongest deviating circadian expression uncovered a novel cry mutation that, as shown by protein structural modeling and brain immunohistochemistry, disrupts the light-driven flavin adenine dinucleotide cofactor photoreduction, providing in vivo support for the importance of this conserved photoentrainment mechanism. Together, our study revealed pervasive tissue-specific circadian expression variation with genetic variants acting upon tissue-specific regulatory networks to generate local gene expression oscillations.
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