The effect of polyunsaturated fatty acids on the homeostasis of yolk lipoprotein in C. elegans examined by CARS and two-photon excitation fluorescence (TPE-F) microscopy

Wei Wen Chen, Yung Hsiang Yi, Cheng Hao Chien, Kuei Ching Hsiung, Yi Chun Lin, Tian Hsiang Ma, Szecheng J. Lo, Ta Chau Chang*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Yolk lipoprotein constitutes the major source of energy and the materials for synthesizing signaling factors for the development of oocytes and embryos in C. elegans. Polyunsaturated fatty acids (PUFAs) packed in yolk lipoprotein have been recently recognized as critical molecules for fertilization and reproduction.1 However, the relation between PUFAs and the homeostasis of yolk lipoprotein is not clear. Here we use coherent anti-Stokes Raman scattering (CARS) microscopy and two-photon excitation fluorescence (TPE-F) microscopy to examine the transportation of yolk lipoprotein. We demonstrate that CARS microscopy is a more sensitive method than the traditional Nile Red staining method in probing the abnormal accumulation of yolk lipoprotein in the body cavity of C. elegans. It is found that the accumulation of yolk lipoprotein is a time-dependent process. In addition, a negative correlation (r = -0.955) between reproductive aging and abnormal accumulation of yolk lipoprotein is established. We further examine wild-type, fat-1, and fat-2 worms with or without the expression of GFP-tagged yolk lipoprotein (VIT-2-GFP). Our data reveal that PUFAs have a positive effect on the synthesis and endocytosis of yolk lipoprotein, confirming the model proposed by Edmonds et al.2

Original languageEnglish
Title of host publicationOptical Methods in Developmental Biology IV
EditorsMichael A. Choma, Scott E. Fraser, Andrew M. Rollins
PublisherSPIE
ISBN (Electronic)9781628419504
DOIs
StatePublished - 2016
EventOptical Methods in Developmental Biology IV - San Francisco, United States
Duration: 13 02 201614 02 2016

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume9716
ISSN (Print)1605-7422

Conference

ConferenceOptical Methods in Developmental Biology IV
Country/TerritoryUnited States
CitySan Francisco
Period13/02/1614/02/16

Bibliographical note

Publisher Copyright:
© 2016 SPIE.

Keywords

  • C. elegans
  • coherent Raman
  • polyunsaturated fatty acids
  • two-photon excitation fluorescence
  • yolk lipoprotein

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