Related Experiment Video
Updated: Aug 9, 2026
Studying Mitochondrial Structure and Function in Drosophila Ovaries
Published on: January 4, 2017
Imaging mitochondrial organization in living primate oocytes and embryos using multiphoton microscopy
J M Squirrell1, R D Schramm, A M Paprocki
1Animal Health and Biomedical Sciences, University of Wisconsin, Madison, WI 53706, USA. jsquirre@facstaff.wisc.edu
Abstract:
We employed multiphoton laser scanning microscopy (MPLSM) to image changes in mitochondrial distribution in living rhesus monkey embryos. This method of imaging does not impair development; thus, the same specimen can be visualized multiple times at various developmental stages. Not only does this increase the amount of information that can be gathered on a single specimen but it permits the correlation of early events with subsequent development in the same specimen. Here we demonstrate the utility of MPLSM for determining changes in mitochondrial organization at various developmental stages and show that rhesus zygotes possess a distinct accumulation of mitochondria between the pronuclei prior to syngamy. We present evidence that suggests that this pronuclear accumulation may be positively correlated with development to the blastocyst stage-in the same embryo-thereby illustrating how MPLSM can be used to correlate cellular dynamics of primate oocytes and early embryos with their developmental potential. Understanding the relationship between mitochondrial distribution and the subsequent development of mammalian embryos, particularly primates, will increase our ability to improve embryo culture technologies, including those used for human assisted reproduction.
Insights
Multiphoton laser scanning microscopy (MPLSM) allows repeated imaging of developing rhesus monkey embryos. This technique revealed mitochondrial accumulation in zygotes correlates with successful blastocyst development, aiding reproductive technologies.
Area of Science:
- Reproductive Biology
- Developmental Biology
- Cellular Imaging
Background:
- Mitochondrial distribution is crucial for mammalian embryo development.
- Non-invasive imaging techniques are needed to study early embryonic events in primates.
- Understanding mitochondrial dynamics can improve assisted reproductive technologies.
Purpose of the Study:
- To demonstrate the utility of multiphoton laser scanning microscopy (MPLSM) for imaging mitochondrial distribution in living rhesus monkey embryos.
- To correlate mitochondrial organization with developmental potential in primate embryos.
- To investigate the role of mitochondrial accumulation in early embryonic development.
Main Methods:
- Multiphoton laser scanning microscopy (MPLSM) was used for non-invasive, repeated imaging of rhesus monkey embryos.
- Mitochondrial distribution was tracked across various developmental stages.
- Embryos were monitored for development to the blastocyst stage.
Main Results:
- MPLSM enabled repeated visualization of the same embryo without impairing development.
- Rhesus zygotes showed a distinct mitochondrial accumulation between pronuclei before syngamy.
- This pronuclear mitochondrial accumulation was positively correlated with development to the blastocyst stage.
Conclusions:
- MPLSM is a valuable tool for correlating cellular dynamics with developmental potential in primate oocytes and early embryos.
- Pronuclear mitochondrial accumulation in rhesus zygotes may serve as a predictive marker for successful development.
- Insights gained can enhance embryo culture technologies for human assisted reproduction.
