Granulosa Cell Apoptosis
Granulosa Cell Apoptosis - Related Videos
07:03
A Modified Co-Culture System for Understanding Granulosa-Theca Cell Interactions in the Bovine Ovary
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This article presents a co-culture model of bovine theca and granulosa cells. This method has the potential to serve as a reliable foundation for analyses focused on the study of paracrine communication and substrate transport between the somatic cells within the follicle.
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Activation of Apoptosis by Cytoplasmic Microinjection of Cytochrome c
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In this protocol, we describe the direct cytoplasmic microinjection of cytochrome c protein into fibroblasts and primary sympathetic neurons. This technique allows for the introduction of cytochrome c protein into the cytoplasm of cells and mimics the release of cytochrome c from mitochondria, which occurs during apoptosis.
08:27
Use of a Caspase Multiplexing Assay to Determine Apoptosis in a Hypothalamic Cell Model
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Multiplex assays can provide beneficial information for basic cellular mechanisms and eliminate waste of reagents and unnecessary repetitive experiments. We describe here a multiplex caspase-3/7 activity assay, using fluorescent- and luminescent-based methods, to determine cell viability in an in vitro hypothalamic model following oxidative challenge with palmitic acid.
05:12
Rapid Isolation of Stage I Oocytes in Zebrafish Devoid of Granulosa Cells
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This protocol describes a modified procedure for rapidly isolating clean stage I oocytes in zebrafish devoid of granulosa cells, thereby providing a convenient method for oocyte-specific research.
01:30
Apoptosis
0 Views •
2023
Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size reduction of the tissue.
FAQs
Granulosa cell survival depends on a balance between supportive signals and death-promoting influences. When survival signals decline, the balance shifts toward mitochondrial dysfunction, caspase activation, and cellular dismantling. Hormonal inputs and local ovarian factors can modify this balance, helping determine whether a follicle remains viable or progresses toward atresia. This makes the process sensitive to both systemic and ovarian conditions.
Mitochondrial dysfunction is an important transition in the regulated death pathway of granulosa cells. It is associated with activation of caspases, enzymes that drive controlled cellular dismantling. Together, these events connect reduced cellular support with the orderly progression of apoptosis rather than uncontrolled cell injury. Their involvement provides mechanistic markers for studying how follicle survival is lost.
The extent of granulosa cell apoptosis helps determine whether a developing follicle survives or undergoes atresia, meaning follicular loss. Because these somatic cells support developing oocytes, their loss can alter the follicle's ability to remain viable. Studying this relationship links cellular death pathways with broader changes in ovarian function, including follicular depletion and reproductive impairment.
Molecular markers allow researchers to assess regulated death activity in granulosa cells and relate it to follicle status. Findings can be interpreted alongside changes in survival signals, mitochondrial function, caspase activation, and hormonal or local ovarian influences. This approach supports research into follicular loss, reproductive toxicity, assisted reproduction, and mechanisms associated with declining ovarian function.
Investigations of granulosa cell apoptosis contribute to understanding ovarian aging, infertility, polycystic ovary syndrome, and follicular loss associated with disease or treatment. The same biological framework is relevant to assisted reproduction and reproductive toxicity research. Comparing apoptosis-related changes across these settings can clarify how altered follicle survival may affect ovarian function and reproductive outcomes.
Research can identify how survival and death pathways shift under disease- or treatment-related conditions. Molecular markers provide a way to examine these changes and evaluate the cellular basis of follicular loss. Such information may guide studies aimed at preserving ovarian function, while also helping researchers interpret reproductive toxicity and follicle viability in assisted reproduction contexts.