TY - JOUR
T1 - An insulin-to-insulin regulatory network orchestrates phenotypic specificity in development and physiology
AU - Fernandes de Abreu, Diana
AU - Caballero Reyes, Antonio
AU - Fardel, Pascal
AU - Stroustrup, Nicholas
AU - Chen, Zhunan
AU - Lee, KyungHwa
AU - Keyes, William D
AU - Nash, Zachary M
AU - López-Moyado, Isaac F
AU - Vaggi, Federico
AU - Cornils, Astrid
AU - Regenass, Martin
AU - Neagu, Anca
AU - Ostojic, Ivan
AU - Liu, Maureen
AU - Cho, Yongmin
AU - Sifoglu, Deniz
AU - Shen, Yu
AU - Fontana, Walter
AU - Lu, Hang
AU - Csikasz-Nagy, Attila
AU - Murphy, Coleen T
AU - Antebi, Adam
AU - Blanc, Eric
AU - Apfeld, Javier
AU - Zhang, Yun
AU - Alcedo, Joy
AU - Ch'ng, QueeLim
PY - 2014/3
Y1 - 2014/3
N2 - Insulin-like peptides (ILPs) play highly conserved roles in development and physiology. Most animal genomes encode multiple ILPs. Here we identify mechanisms for how the forty Caenorhabditis elegans ILPs coordinate diverse processes, including development, reproduction, longevity and several specific stress responses. Our systematic studies identify an ILP-based combinatorial code for these phenotypes characterized by substantial functional specificity and diversity rather than global redundancy. Notably, we show that ILPs regulate each other transcriptionally, uncovering an ILP-to-ILP regulatory network that underlies the combinatorial phenotypic coding by the ILP family. Extensive analyses of genetic interactions among ILPs reveal how their signals are integrated. A combined analysis of these functional and regulatory ILP interactions identifies local genetic circuits that act in parallel and interact by crosstalk, feedback and compensation. This organization provides emergent mechanisms for phenotypic specificity and graded regulation for the combinatorial phenotypic coding we observe. Our findings also provide insights into how large hormonal networks regulate diverse traits.
AB - Insulin-like peptides (ILPs) play highly conserved roles in development and physiology. Most animal genomes encode multiple ILPs. Here we identify mechanisms for how the forty Caenorhabditis elegans ILPs coordinate diverse processes, including development, reproduction, longevity and several specific stress responses. Our systematic studies identify an ILP-based combinatorial code for these phenotypes characterized by substantial functional specificity and diversity rather than global redundancy. Notably, we show that ILPs regulate each other transcriptionally, uncovering an ILP-to-ILP regulatory network that underlies the combinatorial phenotypic coding by the ILP family. Extensive analyses of genetic interactions among ILPs reveal how their signals are integrated. A combined analysis of these functional and regulatory ILP interactions identifies local genetic circuits that act in parallel and interact by crosstalk, feedback and compensation. This organization provides emergent mechanisms for phenotypic specificity and graded regulation for the combinatorial phenotypic coding we observe. Our findings also provide insights into how large hormonal networks regulate diverse traits.
U2 - 10.1371/journal.pgen.1004225
DO - 10.1371/journal.pgen.1004225
M3 - Article
SN - 1553-7390
VL - 10
JO - PL o S Genetics
JF - PL o S Genetics
IS - 3
M1 - e1004225
ER -