GO:0051447 negative regulation of meiotic cell cycle: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0051447 (negative regulation of meiotic cell cycle) describes any process that stops, prevents or reduces the rate or extent of progression through the meiotic cell cycle.
• Meiotic progression is controlled by reversible protein phosphorylation and dephosphorylation, which act as molecular brakes and switches in oocytes and germ cells.
• RINGO/Speedy family proteins, including RINGO/Speedy E, provide direct negative regulation of cell-cycle progression and are mechanistically linked to meiotic control.
• The FIGNL1-FIRRM complex restrains meiotic recombination by preventing DNA-damage-independent loading of RAD51 and DMC1, illustrating negative regulation at the recombination step.
• Sertoli cell polarity and autophagy-related signaling, including PIK3C3-dependent regulation of SCIN, influence the germ-cell environment that supports meiotic progression.
• Environmental exposures such as bisphenol A and its alternatives can disrupt oocyte health and meiotic competence, making negative regulation of meiosis a toxicology and reproductive-medicine target.
Description
GO:0051447, negative regulation of meiotic cell cycle, is a Gene Ontology biological process term defined as any process that stops, prevents or reduces the rate or extent of progression through the meiotic cell cycle. Meiosis is the specialized reductive division that produces haploid gametes, and its timing and fidelity depend on both positive drivers and negative restraints. The negative regulation arm is essential because unchecked meiotic progression can cause recombination errors, aneuploidy and germ-cell loss. Researchers study this term to understand how oocytes and spermatocytes pause, arrest or slow meiotic transitions in response to developmental and environmental cues. At the molecular level, negative regulation of the meiotic cell cycle is frequently executed through protein phosphorylation and dephosphorylation events that gate meiotic transitions. Cell-cycle regulatory modules originally characterized in mitotic systems, such as RINGO/Speedy proteins, also impinge on meiotic progression and can act as negative regulators of cell-cycle progression. In recombination, the FIGNL1-FIRRM complex prevents inappropriate RAD51 and DMC1 loading, thereby restraining a key meiotic DNA-repair step. These examples show that negative regulation is not a single checkpoint but a distributed network of brakes acting at multiple meiotic stages. This article integrates the QuickGO definition with verified PubMed literature to summarize the mechanisms, key genes, disease relevance and experimental methods associated with GO:0051447. It is written for researchers who need a citable, publication-ready overview and for teams designing CRISPR knockout, point-mutation, knock-in or overexpression models of meiotic regulatory genes.
negative regulation of meiotic cell cycle At A Glance
| GO ID | GO:0051447 |
|---|---|
| GO term | negative regulation of meiotic cell cycle |
| Ontology | biological_process |
| Definition | Any process that stops, prevents or reduces the rate or extent of progression through the meiotic cell cycle. |
| Synonyms | down regulation of progression through meiotic cell cycle; down-regulation of progression through meiotic cell cycle; downregulation of progression through meiotic cell cycle; inhibition of progression through meiotic cell cycle; negative regulation of meiotic cell cycle progression; negative regulation of progression through meiotic cell cycle |
| Major function | Restraining, delaying or arresting progression through the meiotic cell cycle |
| Biological context | Meiosis in germ cells, including oocyte maturation and spermatogenesis |
| Regulatory logic | Opposes positive regulation of meiotic cell cycle to balance meiotic timing and fidelity |
| Disease relevance | Reproductive disorders, aneuploidy, germ-cell tumors and infertility-related biology |
What Is GO:0051447?
In plain terms, GO:0051447 describes the biological brakes on meiosis. Formally, it is any process that stops, prevents or reduces the rate or extent of progression through the meiotic cell cycle. This includes mechanisms that delay meiotic entry, hold cells at meiotic checkpoints, slow recombination or reduce the overall rate of meiotic division. The term is a biological_process in the Gene Ontology and is distinct from positive regulation of the meiotic cell cycle, which promotes meiotic progression.
Why Is negative regulation of meiotic cell cycle Important in Cell Biology?
Negative regulation of the meiotic cell cycle matters because meiosis must be precisely timed and restrained to produce viable, euploid gametes. Protein phosphorylation and dephosphorylation are central to this control in mammalian oocytes, and disruption of these brakes can alter meiotic progression. Spermatogonial proliferation and the broader germ-cell program are also subject to regulatory control that determines how many cells enter and complete meiosis. In addition, environmental exposures such as bisphenol A and its alternatives can impair oocyte health and meiotic competence, highlighting the sensitivity of meiotic regulation to external factors. Understanding GO:0051447 therefore informs reproductive biology, toxicology and the development of experimental models for infertility and aneuploidy research.
• Defines the molecular brakes that prevent premature or excessive meiotic progression.
• Supports accurate chromosome segregation by restraining recombination and checkpoint transitions.
• Provides a framework for studying oocyte maturation and meiotic arrest.
• Connects germ-cell regulatory biology to spermatogonial proliferation control.
• Helps interpret how environmental toxicants such as bisphenol A disrupt oocyte health.
• Links cell-cycle regulatory modules such as RINGO/Speedy proteins to meiotic control.
• Informs research on aneuploidy, infertility and germ-cell pathology.
• Guides CRISPR model design for loss-of-function and gain-of-function studies of meiotic regulators.
• Supports toxicology screening for reproductive effects of chemical exposures.
• Enables comparative analysis of negative versus positive regulation of meiosis in single-cell and functional genomics data.
What Happens During negative regulation of meiotic cell cycle?
Phosphorylation-dependent braking of meiotic transitions
In simple terms: Cells use phosphate tags as molecular brakes to slow or pause meiosis.
Protein phosphorylation and dephosphorylation are core mechanisms that regulate the meiotic cell cycle of mammalian oocytes. Negative regulation of meiotic progression can be achieved when specific kinases or phosphatases alter the activity of cell-cycle machinery, thereby delaying or preventing transition to the next meiotic stage. This reversible modification system allows oocytes to respond to developmental and environmental signals without permanently exiting meiosis.
RINGO/Speedy proteins as negative cell-cycle regulators
In simple terms: A family of proteins called RINGO/Speedy can put the brakes on cell-cycle progression.
RINGO/Speedy E is a negative regulator of cell-cycle progression, demonstrating that RINGO/Speedy family proteins can restrain rather than only promote division. Because meiotic and mitotic cell-cycle control share conserved modules, RINGO/Speedy proteins provide a mechanistic template for understanding how negative regulation is imposed on meiotic progression. Their activity illustrates that negative regulation can be encoded by dedicated regulatory proteins rather than only by checkpoint kinases.
Restraint of meiotic recombination by FIGNL1-FIRRM
In simple terms: A protein complex acts as a guard to stop recombination proteins from loading where they should not.
The FIGNL1-FIRRM complex is essential for meiotic recombination and prevents DNA-damage-independent RAD51 and DMC1 loading. By limiting inappropriate loading of these recombinases, FIGNL1-FIRRM restrains a key step of meiotic prophase and thereby contributes to negative regulation of meiotic progression. Loss of this restraint can lead to dysregulated recombination, which is a hallmark of meiotic dysfunction.
Germ-cell environment and Sertoli cell support
In simple terms: Support cells around germ cells help control the timing of meiosis.
Autophagy regulation and the protein kinase activity of PIK3C3 control Sertoli cell polarity through negative regulation of SCIN (scinderin). Sertoli cells provide essential support for spermatogenesis, and their polarity and secretory functions influence the germ-cell environment in which meiosis occurs. Thus, negative regulation of meiotic progression can be indirect, mediated by somatic support cells that gate germ-cell development.
Hormonal and environmental modulation of meiotic restraint
In simple terms: Hormones and environmental chemicals can change how tightly meiosis is held back.
Granulosa cell metabolism at ovulation correlates with oocyte competence and is disrupted by obesity and aging, indicating that the somatic follicular environment modulates oocyte meiotic quality. Bisphenol A and its alternatives can impact oocyte health, including meiotic competence, showing that exogenous chemicals can perturb the balance of meiotic regulation. These observations place negative regulation of the meiotic cell cycle within a physiological and toxicological network rather than an isolated cell-autonomous pathway.
Key Genes Involved in GO:0051447 negative regulation of meiotic cell cycle
The following genes and proteins have been experimentally linked to negative regulation of the meiotic cell cycle or to the germ-cell processes that control it.
| Gene | Major Role | Research Relevance |
|---|---|---|
| PIK3C3 | Autophagy regulation and protein kinase activity controlling Sertoli cell polarity via negative regulation of SCIN | Model for somatic support of spermatogenesis and meiotic progression |
| SCIN | Actin-severing protein negatively regulated by PIK3C3 in Sertoli cells | Readout of Sertoli cell polarity and germ-cell support |
| RINGO/Speedy E | Negative regulator of cell-cycle progression | Conserved template for meiotic cell-cycle braking |
| FIGNL1 | Component of FIGNL1-FIRRM complex essential for meiotic recombination | Prevents inappropriate RAD51/DMC1 loading |
| FIRRM | Partner of FIGNL1 in the FIGNL1-FIRRM complex | Required for meiotic recombination restraint |
| RAD51 | Recombinase whose loading is prevented by FIGNL1-FIRRM | Marker of dysregulated meiotic recombination |
| DMC1 | Meiosis-specific recombinase whose loading is prevented by FIGNL1-FIRRM | Marker of meiotic recombination control |
| CENP-A | Centromeric histone variant with cell-cycle-controlled assembly and inheritance | Links cell-cycle control to chromosome inheritance |
| Cell-cycle kinases | Phosphorylation-dependent regulators of meiotic transitions | Targets for phospho-signaling studies in oocytes |
| Cell-cycle phosphatases | Dephosphorylation-dependent regulators of meiotic transitions | Counterbalance kinases in meiotic control |
| Spermatogonial proliferation regulators | Control the pool of cells entering meiosis | Relevant to spermatogenesis and germ-cell number |
| Granulosa cell metabolic regulators | Influence oocyte competence at ovulation | Link metabolism to oocyte meiotic quality |
| Bisphenol A-responsive pathways | Mediate chemical effects on oocyte health | Toxicology models of meiotic disruption |
| Autophagy machinery | Supports Sertoli cell function and germ-cell environment | Indirect regulator of meiotic progression |
| Actin cytoskeleton regulators | Control Sertoli cell polarity | Downstream effectors of PIK3C3 signaling |
| Meiotic checkpoint components | Enforce quality control during meiotic progression | Candidate genes for aneuploidy research |
How Is negative regulation of meiotic cell cycle Regulated?
Negative regulation of the meiotic cell cycle is itself regulated at multiple levels. Protein phosphorylation and dephosphorylation provide reversible control of meiotic transitions in mammalian oocytes. Autophagy-related signaling through PIK3C3 controls Sertoli cell polarity and thereby influences the germ-cell environment that supports meiosis. Metabolic status of granulosa cells at ovulation correlates with oocyte competence and is disrupted by obesity and aging, indicating that systemic and local metabolic cues modulate meiotic regulation. Environmental chemicals such as bisphenol A and its alternatives can also perturb oocyte health and meiotic competence. Together, these layers integrate cell-intrinsic phospho-signaling with somatic, metabolic and toxicological inputs.
negative regulation of meiotic cell cycle and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| FIGNL1 | Meiotic recombination defects and genome instability | Knockout or point-mutation germ-cell models |
| FIRRM | Meiotic recombination dysregulation | Knockout models to assess RAD51/DMC1 loading |
| PIK3C3 | Sertoli cell dysfunction and spermatogenesis defects | Conditional knockout in Sertoli cells |
| SCIN | Actin cytoskeleton and Sertoli cell polarity defects | Overexpression or knockout in Sertoli cell lines |
| RINGO/Speedy E | Cell-cycle progression dysregulation | Overexpression and knockout cell models |
Reproductive disorders and infertility
Because negative regulation of the meiotic cell cycle controls the timing and fidelity of gamete production, its disruption is relevant to infertility and reproductive disorders. Protein phosphorylation/dephosphorylation defects in oocytes can alter meiotic progression, and impaired Sertoli cell function affects spermatogenesis. Environmental exposures such as bisphenol A and its alternatives have been associated with adverse oocyte health outcomes, linking meiotic dysregulation to reproductive toxicity.
Aneuploidy and chromosome segregation errors
Failure to properly restrain meiotic recombination and checkpoint transitions can lead to chromosome mis-segregation. The FIGNL1-FIRRM complex prevents inappropriate RAD51 and DMC1 loading, and its loss is expected to compromise meiotic recombination fidelity. Cell-cycle control of CENP-A assembly and inheritance further connects meiotic and mitotic chromosome inheritance mechanisms to genome stability.
Germ-cell tumors and proliferative disorders
Regulators of spermatogonial proliferation determine the pool of cells that enter meiosis, and their dysregulation can alter germ-cell homeostasis. Negative regulators of cell-cycle progression such as RINGO/Speedy E provide a conceptual link between meiotic control and broader proliferative control. These connections make meiotic regulatory genes candidates for studies of germ-cell tumors and proliferative germ-cell pathology.
Metabolic and aging-related oocyte dysfunction
Granulosa cell metabolism at ovulation correlates with oocyte competence and is disrupted by obesity and aging. Because oocyte competence depends on proper meiotic progression, metabolic disruption may indirectly impair negative regulation of the meiotic cell cycle. This positions meiotic regulatory pathways as potential mediators of age- and metabolism-related fertility decline.
From negative regulation of meiotic cell cycle-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of a candidate gene accelerate meiotic progression? | CRISPR knockout in germ-cell or oocyte-derived models |
| Does a specific phospho-site control meiotic braking? | Point-mutation knock-in of phospho-dead or phospho-mimetic alleles |
| Does a regulatory protein interact with meiotic machinery? | Tagged knock-in for affinity purification and imaging |
| Does overexpression of a negative regulator delay meiosis? | Overexpression cell models |
| Does a somatic support-cell gene indirectly control meiosis? | Conditional knockout in Sertoli or granulosa cells |
| Does an environmental chemical perturb meiotic regulation? | Exposure models combined with oocyte health assays |
How to Study the negative regulation of meiotic cell cycle Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Phosphoproteomics | Global phosphorylation changes during meiotic transitions | Identifying kinase/phosphatase substrates in oocytes |
| Phospho-specific immunoblotting | Modification state of specific meiotic regulators | Validating candidate braking events |
| Immunofluorescence of chromosome spreads | RAD51 and DMC1 loading at meiotic chromosomes | Assessing FIGNL1-FIRRM function |
| Sertoli cell polarity imaging | Localization of polarity and cytoskeletal markers | Evaluating PIK3C3-SCIN pathway effects |
| Spermatogonial proliferation assays | Number and cycling status of spermatogonia | Linking germ-cell pool size to meiotic entry |
| Granulosa cell metabolic profiling | Metabolic state associated with oocyte competence | Studying obesity and aging effects on meiosis |
| Oocyte health endpoints | Meiotic competence and oocyte quality after exposure | Reproductive toxicology screening |
| Cell-cycle assembly imaging | CENP-A assembly and inheritance dynamics | Connecting cell-cycle control to chromosome inheritance |
Phospho-signaling analysis
Because protein phosphorylation and dephosphorylation regulate the meiotic cell cycle in mammalian oocytes, phosphoproteomics and phospho-specific immunoblotting are central methods. These approaches identify kinase and phosphatase substrates whose modification state correlates with meiotic arrest or progression. Pairing phospho-signaling data with meiotic stage markers allows researchers to map negative regulatory events to specific transitions.
Recombination and DNA-damage assays
The FIGNL1-FIRRM complex prevents DNA-damage-independent RAD51 and DMC1 loading, so assays that quantify RAD51 and DMC1 foci are directly relevant to negative regulation of meiotic recombination. Immunofluorescence of meiotic chromosome spreads can reveal inappropriate recombinase loading in loss-of-function models. These assays connect molecular restraint to chromosome-level outcomes.
Germ-cell and somatic support-cell phenotyping
Sertoli cell polarity and autophagy-related signaling can be assessed by imaging and marker analysis in models of PIK3C3 and SCIN perturbation. Spermatogonial proliferation can be evaluated by histological and proliferation markers to determine how many cells enter meiosis. Granulosa cell metabolic profiling at ovulation provides a complementary readout of oocyte competence.
Toxicology and exposure studies
Scoping reviews of bisphenol A and its alternatives highlight oocyte health endpoints that can be used to test chemical effects on meiotic regulation. Exposure experiments combined with meiotic progression assays can determine whether a chemical enhances or relieves negative regulation. Such studies are important for reproductive risk assessment.
How CRISPR Can Be Used to Study GO:0051447 negative regulation of meiotic cell cycle
Knockout
CRISPR knockout is used to remove candidate negative regulators and test whether meiotic progression accelerates or becomes dysregulated. For example, knockout of FIGNL1 or FIRRM components can reveal inappropriate RAD51 and DMC1 loading during meiotic recombination. Knockout of PIK3C3 in Sertoli cells can test its role in polarity and germ-cell support. Knockout models are therefore a first-line approach for assigning causal function to genes annotated to GO:0051447.
Point Mutation
Point-mutation models are valuable when a gene has essential domains or phospho-sites that cannot be removed without losing all function. Because phosphorylation and dephosphorylation regulate meiotic transitions, phospho-dead or phospho-mimetic point mutations can isolate the regulatory contribution of a single residue. Such models help distinguish catalytic from regulatory functions in meiotic control.
Knock-in
Knock-in of tags or reporters allows visualization and biochemical isolation of meiotic regulatory complexes. Tagged knock-in of FIGNL1-FIRRM components can support interaction and localization studies during meiotic recombination. Knock-in of fluorescent reporters at meiotic loci can also enable live imaging of meiotic progression in germ cells.
Overexpression
Overexpression models test whether increasing the dose of a negative regulator is sufficient to delay or arrest meiosis. RINGO/Speedy E acts as a negative regulator of cell-cycle progression, making it a candidate for overexpression studies in meiotic contexts. Overexpression of PIK3C3-pathway components can also probe Sertoli cell polarity and germ-cell support. These gain-of-function models complement knockout approaches for causal inference.
How EDITGENE Supports negative regulation of meiotic cell cycle Research
Researchers studying negative regulation of meiotic cell cycle-related genes often need to determine whether a candidate gene is causally involved in restraining meiotic progression, and at which step. This requires precise genetic models that can remove, modify or amplify gene function in relevant germ-cell or support-cell contexts. EDITGENE provides end-to-end CRISPR services tailored to these questions, from knockout and point-mutation models to knock-in reporters, overexpression lines, library screening and bioinformatics analysis.
Contact EDITGENE today to design your custom CRISPR model for negative regulation of meiotic cell cycle research.
Frequently Asked Questions About negative regulation of meiotic cell cycle
What is GO:0051447 negative regulation of meiotic cell cycle?
GO:0051447 is a Gene Ontology biological process term defined as any process that stops, prevents or reduces the rate or extent of progression through the meiotic cell cycle. It represents the molecular brakes on meiosis.
What genes are involved in negative regulation of the meiotic cell cycle?
Genes and proteins linked to this process include FIGNL1 and FIRRM in meiotic recombination restraint, PIK3C3 and SCIN in Sertoli cell support, and RINGO/Speedy E as a negative cell-cycle regulator.
How is the meiotic cell cycle negatively regulated?
Negative regulation is achieved through mechanisms such as reversible protein phosphorylation and dephosphorylation, prevention of inappropriate RAD51 and DMC1 loading by FIGNL1-FIRRM, and somatic support-cell signaling.
Why is negative regulation of meiosis important for fertility?
Proper restraint of meiosis ensures correct timing and fidelity of gamete production; disruption can lead to recombination errors, aneuploidy and infertility.
What is the role of FIGNL1-FIRRM in meiosis?
The FIGNL1-FIRRM complex is essential for meiotic recombination and prevents DNA-damage-independent RAD51 and DMC1 loading, thereby restraining a key meiotic step.
How does bisphenol A affect oocyte meiosis?
Bisphenol A and its alternatives can impact oocyte health, including meiotic competence, according to a scoping review of oocyte health studies.
What methods are used to study negative regulation of the meiotic cell cycle?
Common methods include phosphoproteomics and phospho-specific immunoblotting, RAD51/DMC1 foci immunofluorescence, Sertoli cell polarity imaging and oocyte health endpoints in toxicology studies.
Can CRISPR be used to study meiotic cell cycle regulation?
Yes. CRISPR knockout, point mutation, knock-in and overexpression models can test causal roles of candidate genes in restraining meiotic progression.
What diseases are associated with dysregulated meiosis?
Dysregulated meiosis is associated with reproductive disorders, infertility and aneuploidy, and meiotic regulators are also relevant to germ-cell proliferative biology.
How does metabolism affect oocyte meiotic competence?
Granulosa cell metabolism at ovulation correlates with oocyte competence and is disrupted by obesity and aging, linking metabolic state to meiotic quality.
Conclusion
GO:0051447, negative regulation of meiotic cell cycle, captures the essential braking systems that time and restrain meiosis. These systems operate through phosphorylation-dependent control, dedicated regulatory proteins such as RINGO/Speedy E, recombination restraint by FIGNL1-FIRRM and somatic support-cell signaling. Understanding them is critical for reproductive biology, toxicology and aneuploidy research. CRISPR-based knockout, point-mutation, knock-in and overexpression models provide the causal tools needed to dissect these brakes gene by gene. Combined with phosphoproteomics, imaging and screening approaches, they offer a clear path from candidate gene to mechanism in meiotic regulation.
References
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