Ecdysone and Insulin Signaling Play Essential Roles in Readjusting the Altered Body Size Caused by the dGPAT4 Mutation in Drosophila

Yan Yan; Hao Wang; Hanqing Chen; Anya Lindström-Battle; Renjie Jiao

doi:10.1016/j.jgg.2015.06.008

Volume 42 Issue 9

Sep. 2015

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Ecdysone and Insulin Signaling Play Essential Roles in Readjusting the Altered Body Size Caused by the dGPAT4 Mutation in Drosophila

doi: 10.1016/j.jgg.2015.06.008

Yan Yan^{a, b},
Hao Wang^{a, c},
Hanqing Chen^{a, b},
Anya Lindström-Battle^a,
Renjie Jiao^{a, d}

a
State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
b
University of Chinese Academy of Sciences, Beijing 100080, China
c
Department of Chemistry and Biology, National University of Defense Technology, Changsha 410072, China
d
Guangzhou Hoffmann Institute of Immunology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 510182, China

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Corresponding author: E-mail address: rjiao@sun5.ibp.ac.cn (Renjie Jiao)
Received Date: 2015-04-13
Accepted Date: 2015-06-04
Rev Recd Date: 2015-06-04

Available Online: 2015-07-18

Publish Date: 2015-09-20

Abstract

Abstract

Body size is one of the features that distinguish one species from another in the biological world. Animals have developed mechanisms to control their body size during normal development. However, how animals cope with genetic alterations and/or environmental stresses to develop into normal-sized adults remain poorly understood. The ability of the animals to develop into a normal-sized adult after the challenges of genetic alterations and/or environmental stresses reveals a robustness of body size control. Here we show that the mutation ofdGPAT4, a de novo synthase of lysophosphatidic acid, is a genetic alteration that triggers such a robust response of the animals to body size challenges in Drosophila. Loss of dGPAT4 leads to a severe delay of development, slow growth and resultant small-sized animals during the larval stages, but results in normal-sized adult flies. The robust body size adjustment of the dGPAT4 mutant is likely achieved by corresponding changes in ecdysone and insulin signaling, which is also manifested by compromised food intake. Thus, we propose that a strategy has been evolved by the animals to reach final body size when challenged by genetic alterations, which requires the coordinated ecdysone and insulin signaling.
- Body size,
- Robustness,
- Insulin,
- Ecdysone

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References(27)

References

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