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Plate-based Large-scale Cultivation of Caenorhabditis elegans: Sample Preparation for the Study of Metabolic Alterations in Diabetes
Published on: August 24, 2018
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Modeling type 2 diabetes-like hyperglycemia in C. elegans on a microdevice.
Guoli Zhu1, Fangchao Yin, Li Wang
1Laboratory of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China. jhqin@dicp.ac.cn.
Integrative Biology : Quantitative Biosciences From Nano to Macro
|December 15, 2015
Summary
A novel microfluidic assay models type 2 diabetes-like hyperglycemia in Caenorhabditis elegans (C. elegans). High glucose significantly reduced lifespan, altered gene expression, and increased fat storage, offering insights into metabolic disorders.
Area of Science:
- Biomedical research
- Model organism studies
- Microfluidics
Background:
- Caenorhabditis elegans (C. elegans) serves as a valuable model organism due to genetic and molecular similarities with mammals.
- Type 2 diabetes and hyperglycemia present complex metabolic challenges.
- Existing models may lack the resolution for single-animal, multi-parameter analysis.
Purpose of the Study:
- To develop and validate a microfluidic assay for modeling type 2 diabetes-like hyperglycemia in C. elegans.
- To investigate the effects of hyperglycemia on lifespan, oxidative stress, and lipid metabolism at the single-worm level.
- To establish a platform for high-throughput screening of anti-diabetic compounds.
Main Methods:
- Integration of long-term C. elegans culture, immobilization, and precise chemical (glucose) stimulation within a single microfluidic device.
- Single-animal resolution analysis of lifespan, oxidative stress markers (gst-4, hsp-70), and lipid accumulation (using VS29 reporter strain).
- Exposure of worms to varying glucose concentrations (e.g., 100 mM, 200 mM) to simulate hyperglycemic conditions.
Main Results:
- High glucose concentrations (100 mM and 200 mM) significantly reduced C. elegans mean lifespan by up to 30.8%.
- Hyperglycemia led to increased expression of the oxidative stress gene gst-4 and down-regulation of hsp-70 and skn-1.
- Marked increase in fat storage was observed in worms exposed to high glucose conditions.
Conclusions:
- The developed microfluidic assay effectively models hyperglycemia-induced metabolic dysfunction in C. elegans.
- This approach provides a powerful tool for dissecting the molecular mechanisms underlying diabetes and its complications.
- The platform facilitates efficient evaluation of potential anti-diabetic drugs.
