Summary of study ST000294

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR000235. The data can be accessed directly via it's Project DOI: 10.21228/M88P4S This work is supported by NIH grant, U2C- DK119886.

See: https://www.metabolomicsworkbench.org/about/howtocite.php

This study contains a large results data set and is not available in the mwTab file. It is only available for download via FTP as data file(s) here.

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Study IDST000294
Study TitleMechanisms of Metabolic Cycles in Diapausing Flesh Fly by Metabolomics Approach
Study Typetime course
Study SummaryInsects use diapause, a programmed period of dormancy, to avoid stressful times of the year and to exploit seasonal times of resource availability. Because most diapausing insects do not feed, they must live off their body reserves for several months and the proper use of metabolic reserves is critical for surviving diapause and performing after diapause termination. Across multiple insects, metabolic depression during diapause has been associated with a switch from aerobic metabolism to facultative anaerobic metabolism, despite insects not suffering environmental oxygen limitation. While metabolic rates are depressed during diapause overall to save energy, some insects show regular cyclical bouts of higher metabolic activity during diapause. The functional importance of these metabolic cycles and the mechanisms underlying these cycles are still unknown, but they may be critical for properly maintaining the balance between energy states and purge the accumulation of anaerobic metabolic byproducts. In the present study, we will test the hypothesis that periodic cycles of increased metabolism during insect diapause are associated with both regenerating organismal energetic states, particularly ATP that may decline during metabolic depression, and for purging metabolites associated with anaerobic metabolism. We will use a combination of non-targeted uHPLC-MS/MS metabolomics and targeted NMR-spectroscopy to identify and quantify metabolites that are altered during the cycles in diapausing pupae of the flesh fly, Sarcophaga crassipalpis. This work will allow us to propose specific biochemical and cellular hypotheses for the regulation of cyclic releases from metabolic depression in diapausing insects. Our work may not only reveal the physiological mechanisms regulating metabolic cycles during diapause in flesh fly, but also provide insight to understand the regulation of similar metabolic cycles in mammalian hibernators (i.e., periodic arousal), and also provide insights into how these cycles could be exploited to disrupt the diapause of insect pests.
Institute
University of Florida
DepartmentSECIM
Last NameChen
First NameChao
AddressDepartment of Entomology and Nematology, Bldg. 970, 1881 Natural Area Dr., Gainesville, FL 32611
Emailchaochenjxau@126.com
Phone352-273-3949
Submit Date2015-03-03
Num Groups5
Total Subjects45
Raw Data AvailableYes
Raw Data File Type(s).mzXML
Analysis Type DetailLC-MS
Release Date2016-12-22
Release Version1
Chao Chen Chao Chen
https://dx.doi.org/10.21228/M88P4S
ftp://www.metabolomicsworkbench.org/Studies/ application/zip

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Project:

Project ID:PR000235
Project DOI:doi: 10.21228/M88P4S
Project Title:Mechanisms of Metabolic Cycles in Diapausing Flesh Fly by Metabolomics Approach
Project Type:Time course
Project Summary:Insects use diapause, a programmed period of dormancy, to avoid stressful times of the year and to exploit seasonal times of resource availability. Because most diapausing insects do not feed, they must live off their body reserves for several months and the proper use of metabolic reserves is critical for surviving diapause and performing after diapause termination. Across multiple insects, metabolic depression during diapause has been associated with a switch from aerobic metabolism to facultative anaerobic metabolism, despite insects not suffering environmental oxygen limitation. While metabolic rates are depressed during diapause overall to save energy, some insects show regular cyclical bouts of higher metabolic activity during diapause. The functional importance of these metabolic cycles and the mechanisms underlying these cycles are still unknown, but they may be critical for properly maintaining the balance between energy states and purge the accumulation of anaerobic metabolic byproducts. In the present study, we will test the hypothesis that periodic cycles of increased metabolism during insect diapause are associated with both regenerating organismal energetic states, particularly ATP that may decline during metabolic depression, and for purging metabolites associated with anaerobic metabolism. We will use a combination of non-targeted uHPLC-MS/MS metabolomics and targeted NMR-spectroscopy to identify and quantify metabolites that are altered during the cycles in diapausing pupae of the flesh fly, Sarcophaga crassipalpis. This work will allow us to propose specific biochemical and cellular hypotheses for the regulation of cyclic releases from metabolic depression in diapausing insects. Our work may not only reveal the physiological mechanisms regulating metabolic cycles during diapause in flesh fly, but also provide insight to understand the regulation of similar metabolic cycles in mammalian hibernators (i.e., periodic arousal), and also provide insights into how these cycles could be exploited to disrupt the diapause of insect pests.
Institute:The Institute of Food and Agricultural Sciences
Department:Department of Entomology and Nematology
Last Name:Hahn
First Name:Daniel
Address:P.O. Box 110620 Gainesville FL 32611-0620
Email:dahahn@ufl.edu
Phone:352-273-3968
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