Oocyte Pairing
Oocyte Pairing - Related Videos
09:40
Functional Cloning Using a Xenopus Oocyte Expression System
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Cited by 3 •
2016
We describe a Xenopus oocyte and animal cap system for the expression cloning of genes capable of inducing a response in competent ectoderm, and discuss techniques for the subsequent analysis of such genes. This system is useful in the functional identification of a wide range of gene products.
12:10
Microinjection of Xenopus Laevis Oocytes
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Cited by 14 •
2009
Here we demonstrate cytoplasmic microinjection of Xenopus laevis oocytes with a nuclear import substrate, as well as preparation of the injected oocytes for visualization by thin-sectioning electron microscopy.
13:18
Single Oocyte Bisulfite Mutagenesis
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Cited by 14 •
2012
Bisulfite mutagenesis is the gold standard for analyzing DNA methylation. Our modified protocol allows for DNA methylation analysis at the single-cell level and was specifically designed for individual oocytes. It can also be used for cleavage-stage embryos.
08:42
Retrieval of Mouse Oocytes
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Cited by 13 •
2007
This protocol illustrates the technique for extracting oocytes or early-stage fertilized embryos from the oviduct of mice. The ability to identify the infindibulum and insert a blunt end needle into it is essential to correctly performing the procedure.
09:20
Fertilization of Xenopus oocytes using the Host Transfer Method
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Cited by 13 •
2010
Procedure for fertilizing Xenopus oocytes by the host transfer method.
FAQs
The outcome depends on what the experiment is designed to permit during contact. Researchers can maintain paired oocytes long enough to examine adhesion, membrane fusion, or exchange of cellular components. Treating these as separate outcomes helps distinguish a physical interaction from deeper cellular integration and links the observed response to the experimental condition.
Membrane behavior provides one level of analysis, while cytoplasmic and genetic-material interactions provide others. This separation allows investigators to ask whether a response is associated mainly with cell-surface contact, movement of cytoplasmic components, or interaction involving genetic material. The distinction is important when interpreting effects on maturation, activation, reprogramming, or developmental potential.
Pairing can reveal how one oocyte's cellular environment affects another. In this context, cytoplasmic regulation refers to the influence of material within the cell on maturation or later developmental capacity. Studying two cells together can therefore expose regulatory relationships that are difficult to evaluate when each oocyte is considered in isolation, especially during early developmental processes.
Contact duration is an experimental variable because different interactions may require different periods of association. Longer maintenance may permit adhesion, membrane fusion, or exchange of cellular components, depending on the design. Relating the observed outcome to how long the oocytes remain together helps investigators interpret whether the interaction remained at the surface or progressed further.
Micromanipulation is used to position two oocytes so their physical contact can be controlled and observed. The experimental workflow centers on bringing the cells together, maintaining the selected contact period, and examining the resulting interaction. Depending on the design, analysis may focus on adhesion, fusion, component exchange, maturation-related effects, or developmental potential.
Researchers apply the approach when they need to isolate interactions between oocytes rather than examine each cell independently. It can support studies of oocyte maturation, cell-cell communication, cytoplasmic regulation, and factors associated with early developmental potential. The same experimental framework can also be used to examine cellular reprogramming, activation, or embryo development.
Results can indicate whether the cellular environment associated with pairing is linked to reprogramming, activation, or embryo development. They may also help evaluate how cytoplasmic regulation and cell-cell communication relate to developmental potential. Because the method isolates the interaction between two oocytes, researchers can connect these outcomes more directly to the paired cellular context.