{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T14:41:41Z","timestamp":1791297701704,"version":"4.1.0"},"reference-count":43,"publisher":"Oxford University Press (OUP)","issue":"6","license":[{"start":{"date-parts":[[2006,12,1]],"date-time":"2006-12-01T00:00:00Z","timestamp":1164931200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":["rep.bioscientifica.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2006,12,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The role of endogenous lipid in the provision of energy during in vitro maturation of immature porcine oocytes has been studied. Fluorescence resonance energy transfer (FRET) acceptor bleaching methods have been used to examine mitochondrial:lipid droplet co-localisation in live oocytes. FRET experiments demonstrate whether organelles are within the FRET-distance (i.e. 6\u201310 nm), thus showing true association on a molecular scale. Immature and in vitro-matured porcine oocytes were stained with Mitotracker Green (MTG; mitochondria) and Nile Red (NR; lipid droplets). The data indicated sufficient overlap between MTG emission and NR excitation to support a FRET reaction and that mitochondria and lipid droplets were sufficiently co-localised for a FRET reaction to occur. When NR-stained lipid droplets were specifically bleached, a significant increase in the MTG signal in stained mitochondria was observed (FRET efficiency, E=22.2 \u00b1 3.18%). These results strongly suggest a metabolic role for lipid metabolism during oocyte maturation. This conclusion was reinforced by the use of inhibitors of fatty acid \u03b2-oxidation, methyl palmoxirate or mercaptoacetate, exposure to which during oocyte maturation led to developmental failure post-fertilisation. These data provide strong evidence that MTG and NR can act as a FRET pair and that in porcine oocytes, mitochondria and lipid droplets lie within 6\u201310 nm of each other, indicating association on a molecular scale. The findings also suggest that endogenous triglycerides play an important role in energy metabolism during porcine in vitro maturation.<\/jats:p>","DOI":"10.1530\/rep-06-0073","type":"journal-article","created":{"date-parts":[[2006,11,24]],"date-time":"2006-11-24T13:17:38Z","timestamp":1164374258000},"page":"829-837","update-policy":"https:\/\/doi.org\/10.1530\/crossmarkpolicy-11","source":"Crossref","is-referenced-by-count":165,"title":["Fluorescence resonance energy transfer analysis of mitochondrial:lipid association in the porcine oocyte"],"prefix":"10.1093","volume":"132","author":[{"given":"R G","family":"Sturmey","sequence":"first","affiliation":[{"name":"Departments of Biology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P J","family":"O\u2019Toole","sequence":"additional","affiliation":[{"name":"Technology Facility, University of York, York YO10 5DJ, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H 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