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Microinjection of Xenopus Laevis Oocytes
Published on: February 23, 2009
A protocol for isolating Xenopus oocyte nuclear envelope for visualization and characterization by scanning electron
T D Allen1, S A Rutherford, S Murray
1Paterson Institute for Cancer Research, University of Manchester, Wilmslow Road, Withington, Manchester M20 4BX, UK. tallen@picr.man.ac.uk
Nature Protocols
|June 5, 2007
Summary
This protocol outlines a method for isolating oocyte nuclear envelopes (NEs) from Xenopus laevis. The technique uses electron microscopy for high-resolution imaging of nuclear structures and proteins.
Area of Science:
- Cell Biology
- Microscopy Techniques
Background:
- The nuclear envelope (NE) is a critical structure regulating molecular traffic between the nucleus and cytoplasm.
- Investigating NE structure and protein localization requires high-resolution imaging techniques.
Purpose of the Study:
- To provide a detailed protocol for the isolation and high-resolution visualization of oocyte nuclear envelopes.
- To enable in situ immunological characterization of nuclear structures and their associations.
Main Methods:
- Isolation of oocyte nuclear envelopes from Xenopus laevis ovaries.
- Immunogold labeling of specific proteins within the nuclear envelope.
- Visualization using field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM).
Main Results:
- Achieved 3-5 nm resolution of nuclear structures, surpassing light microscopy capabilities.
- Demonstrated feasibility of in situ investigation and immunological characterization of nuclear components.
- Established a protocol adaptable for sample storage, with FESEM samples storable for weeks.
Conclusions:
- The protocol offers a robust method for high-resolution imaging and analysis of oocyte nuclear envelopes.
- This technique provides valuable insights into the structural organization and protein interactions within the nuclear envelope.
- The method facilitates detailed ultrastructural and immunological studies of nuclear components.
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