Cumulus Cells
Cumulus Cells - Related Videos
03:02
Porcine Cumulus Oocyte Complex Isolation: A Technique to Isolate Cumulus Oocyte Complex from Porcine Ovarian Follicle for In Vitro Fertilization
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2025
This video describes the technique to isolate the cumulus-oocyte complex or COC from porcine ovaries. The isolated intact COC can be used to carry out the in vitro fertilization - the assisted reproductive technique for developing fertility treatments.
04:33
3D Culture of Porcine COCs: A Procedure to Encapsulate Cumulus Oocyte Complexes in Fibrin-alginate Polymer Hydrogel Beads
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2025
This video describes the protocols for encapsulating porcine cumulus-oocyte complexes (COCs) in fibrin-alginate beads to establish a 3D culture. This in-vitro maturation system maintains normal cell-to-cell communication, ensuring oocyte maturation and retaining viability.
08:06
The Immediate Partial Removal of Cumulus-Oocyte Complexes: A Refined Approach for Rapid Observation of In Vitro Fertilization
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2024
Here, we present an optimized method for promptly removing a portion of cumulus-oocyte complexes following egg retrieval to expedite the IVF observation process, reducing the time required for granulosa cell removal, minimizing oocyte exposure to external elements, and does not hinder embryo development, ultimately improving the efficiency of IVF laboratory procedures.
04:16
Lentiviral Vector-Based Perivitelline Injection: A Method to Transduce the Gene of Interest Into Fertilized Single-Cell Mouse Oocytes
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2025
This video describes the pronuclear injection of lentiviral vectors into the perivitelline space of a fertilized mouse embryo. The lentivirus contains the transgene, which is incorporated into the genome of the fertilized embryo, eventually giving rise to transgenic mice.
08:43
Loss- and Gain-of-function Approach to Investigate Early Cell Fate Determinants in Preimplantation Mouse Embryos
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Cited by 2 •
2016
The goal of this protocol is to describe a loss- and gain-of function method that is applicable to identify neogenin as a stage-specific receptor that leads to trophectoderm and inner cell mass differentiation in preimplantation mouse embryos.
FAQs
Cumulus cells support the oocyte through direct gap-junction communication. These channels allow exchange of metabolites and regulatory signals between the surrounding cells and the oocyte, linking somatic-cell activity with oocyte development. This relationship makes cumulus cells biologically important beyond physical support, because changes in their communication or activity can alter the developmental environment surrounding the oocyte.
Hormonal cues trigger cumulus expansion as the oocyte approaches ovulation. The cells change their organization and behavior during this stage, creating a recognizable event in follicular maturation. Studying expansion therefore helps connect hormonal signaling with the timing of ovulation and with the changing conditions experienced by the oocyte immediately before it is released.
Measurements of morphology, gene expression, and metabolic activity can reflect the developmental competence of the associated oocyte. Developmental competence refers to the oocyte's ability to progress appropriately during maturation and reproduction. These cellular readouts are therefore studied as indirect indicators of oocyte quality, although no single feature is presented as a definitive measure.
Cumulus cells provide several observable readouts of changes occurring as the follicle matures. Researchers can relate their morphology, gene expression, metabolic activity, and hormonally triggered expansion to the developmental state of the surrounding follicle. This approach connects cellular behavior with oocyte maturation and helps characterize the biological conditions leading toward ovulation.
Their condition can provide information about the oocyte without focusing only on the oocyte itself. In assisted reproductive technologies, researchers study cumulus-cell morphology, gene expression, and metabolic activity to help assess oocyte quality and understand follicular maturation. This information may support efforts to improve the interpretation of oocyte status and in vitro fertilization outcomes.
Cumulus-cell research links communication between ovarian somatic cells and the oocyte to mammalian reproductive success. It can help explain how metabolites, regulatory signals, hormonal responses, and cellular activity shape the oocyte's developmental environment. This makes the cells useful for studying both the basic biology of follicular maturation and reproductive applications involving oocyte assessment.