GO:0090235 regulation of metaphase plate congression: Mitotic Alignment Control, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0090235 regulation of metaphase plate congression describes any process that modulates the rate, frequency, or extent of chromosome alignment at the metaphase plate, a plane halfway between the spindle poles.
• Chromosome congression is driven by kinetochore-microtubule capture and motor proteins such as CENP-E (kinesin-7), KIF18A, and the astrin-kinastrin complex [1,2,3,6].
• Regulatory inputs include Plk1-dependent phosphorylation that promotes formation and maintenance of a metaphase plate.
• Defects in congression regulation are linked to chromosomal instability and aneuploidy, which are hallmarks of cancer and are associated with altered expression of cell division cycle genes in lung carcinoma [5,7].
• Non-motor contributors such as neurofibromin localize to the spindle and support chromosome congression, connecting congression regulation to neurofibromatosis biology.
• Studying GO:0090235 requires live-cell imaging, kinetochore tracking, and perturbation of motor and regulatory proteins using CRISPR-based models [1,2,3,6].
Description
Chromosome congression is the process by which duplicated chromosomes are transported to and aligned at the metaphase plate, a plane equidistant between the two spindle poles, before anaphase onset. The Gene Ontology term GO:0090235, regulation of metaphase plate congression, captures any process that modulates the rate, frequency, or extent of this alignment. Accurate congression is essential for faithful chromosome segregation, and its dysregulation contributes to chromosomal instability and aneuploidy [1,5]. Researchers study this term to understand how motor proteins, kinetochore components, and signaling kinases cooperate to position chromosomes correctly [2,3,6]. The term is a biological_process child of the broader regulation of chromosome segregation, and it is mechanistically distinct from congression itself because it focuses on modulatory inputs rather than the core alignment machinery. Key regulatory players include the kinesin-7 motor CENP-E, which mediates kinetochore-microtubule capture and chromosome alignment, and Plk1, which associates with the astrin-kinastrin complex to promote formation and maintenance of a metaphase plate. Additional regulators such as KIF18A coordinate congression with cytokinesis, while non-motor proteins like neurofibromin localize to the spindle and support congression. Because congression errors are a source of aneuploidy, this GO term is highly relevant to cancer biology, developmental disorders, and the mechanistic study of mitotic fidelity [1,5,7].
regulation of metaphase plate congression At A Glance
| GO ID | GO:0090235 |
|---|---|
| GO term | regulation of metaphase plate congression |
| Ontology | biological_process |
| Synonym | regulation of chromosome congression |
| Definition | Any process that modulates the rate, frequency, or extent of metaphase plate congression, the alignment of chromosomes at the metaphase plate, a plane halfway between the poles of the spindle. |
| Major function | Modulates the alignment of chromosomes at the metaphase plate during mitosis. |
| Related process | Chromosome congression, kinetochore-microtubule attachment, spindle assembly checkpoint. |
| Key regulators | Plk1, CENP-E (kinesin-7), KIF18A, astrin-kinastrin complex, neurofibromin. |
| Disease relevance | Chromosomal instability, aneuploidy, cancer, neurofibromatosis. |
What Is GO:0090235?
GO:0090235 regulation of metaphase plate congression is defined as any process that modulates the rate, frequency, or extent of metaphase plate congression, the alignment of chromosomes at the metaphase plate, a plane halfway between the poles of the spindle. In other words, it is the regulatory layer that controls how efficiently and accurately chromosomes reach and maintain their metaphase positions, rather than the physical movement itself.
Why Is regulation of metaphase plate congression Important in Cell Biology?
Regulation of metaphase plate congression is important because errors in chromosome alignment lead to aneuploidy and chromosomal instability, which are hallmarks of cancer and contributors to developmental disorders [1,5,7]. Understanding how this process is regulated provides mechanistic insight into mitotic fidelity and identifies potential therapeutic targets, particularly in cancers with altered expression of cell division cycle genes. Moreover, regulators such as Plk1 and CENP-E are actively investigated as targets for anti-mitotic therapies [2,3].
• Ensures faithful chromosome segregation and prevents aneuploidy.
• Defects in congression regulation are linked to chromosomal instability in cancer [5,7].
• Plk1-dependent regulation of the astrin-kinastrin complex is required for metaphase plate formation and maintenance.
• CENP-E (kinesin-7) is essential for kinetochore-microtubule capture and chromosome alignment.
• KIF18A coordinates chromosome congression with cytokinesis, linking congression to cell division completion.
• Neurofibromin localizes to the spindle and functions in chromosome congression, connecting the process to neurofibromatosis type 1 biology.
• Altered expression of cell division cycle-associated genes, including congression regulators, has prognostic significance in human lung carcinoma.
• Centromeric non-coding transcription may influence chromosomal instability, indirectly affecting congression regulation.
• Model organisms such as Arabidopsis reveal conserved kinesin-7/BUB3.3 mechanisms in congression.
• The term provides a framework for annotating genes that modulate, rather than execute, chromosome alignment.
What Happens During regulation of metaphase plate congression?
Kinetochore-microtubule capture and initial alignment
In simple terms: Chromosomes must first grab the spindle fibers before they can line up.
Regulation of metaphase plate congression begins with the modulation of kinetochore-microtubule capture, a step in which the kinesin-7 motor CENP-E plays a central role in facilitating chromosome alignment. CENP-E activity is required for efficient capture and for the subsequent movement of chromosomes toward the metaphase plate. In Arabidopsis thaliana, a kinetochore-associated kinesin-7 motor cooperates with BUB3.3 to regulate mitotic chromosome congression, demonstrating evolutionary conservation of this regulatory module.
Motor-driven chromosome transport and plate formation
In simple terms: Molecular motors push and pull chromosomes into a neat line.
Once attached, chromosomes are transported along microtubules by motor proteins. KIF18A is required for faithful coordination of chromosome congression with cytokinesis, indicating that its regulatory function extends beyond alignment to cell division completion. Plk1 associates with the astrin-kinastrin complex to promote formation and maintenance of a metaphase plate, highlighting a kinase-dependent regulatory layer. These motors and their regulators ensure that chromosomes oscillate and eventually stabilize at the metaphase plate.
Spindle localization of non-motor regulators
In simple terms: Some proteins help line up chromosomes without being motors themselves.
Non-motor proteins can also regulate congression. Neurofibromin undergoes nuclear import and localizes to the spindle, where it functions in chromosome congression. This demonstrates that regulation of metaphase plate congression involves diverse protein classes beyond canonical kinesins and kinases. The nuclear import mechanism of neurofibromin is specifically required for its spindle localization and congression function.
Coordination with the spindle assembly checkpoint and cytokinesis
In simple terms: The cell checks that chromosomes are aligned before dividing.
Regulation of congression is tightly coupled to the spindle assembly checkpoint, which monitors kinetochore-microtubule attachments and chromosome alignment. KIF18A ensures that congression is coordinated with cytokinesis, preventing premature or defective cell division. Disruption of this coordination can lead to chromosomal instability and aneuploidy [1,5]. Centromeric non-coding transcription has been proposed to influence chromosomal instability, potentially impacting congression regulation.
Disease-associated dysregulation of congression
In simple terms: When alignment control fails, cells can become cancerous.
Altered expression of cell division cycle-associated genes, including those involved in congression, has prognostic significance in human lung carcinoma. Chromosomal instability resulting from congression defects is a hallmark of many cancers. Therefore, understanding the regulation of metaphase plate congression is directly relevant to cancer biology and therapeutic targeting [1,7].
Key Genes Involved in GO:0090235 regulation of metaphase plate congression
The following genes and proteins are experimentally implicated in the regulation of metaphase plate congression, based on the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| CENP-E (KIF10) | Kinesin-7 motor mediating kinetochore-microtubule capture and chromosome alignment | Essential for congression; target for mitotic inhibitors |
| PLK1 | Kinase that associates with astrin-kinastrin complex to promote metaphase plate formation | Regulates congression; potential anti-cancer target |
| KIF18A | Kinesin required for coordination of chromosome congression with cytokinesis | Links congression to cell division completion |
| NF1 (neurofibromin) | Spindle-localized protein functioning in chromosome congression | Connects congression to neurofibromatosis type 1 |
| Astrin (SPAG5) | Component of astrin-kinastrin complex involved in metaphase plate maintenance | Plk1 substrate; regulates congression |
| Kinastrin (SKAP) | Component of astrin-kinastrin complex | Works with Plk1 in metaphase plate formation |
| BUB3.3 | Kinetochore-associated protein cooperating with kinesin-7 in congression | Conserved regulator in Arabidopsis |
| CDC20 | Cell division cycle gene with prognostic significance in lung carcinoma | Marker of congression-related cell cycle dysregulation |
| BUB1 | Spindle assembly checkpoint kinase | Monitors congression and alignment |
| MAD2L1 | Spindle assembly checkpoint component | Ensures congression before anaphase |
| NUMA1 | Spindle organizing protein | Supports metaphase plate organization |
| TPX2 | Spindle assembly factor | Regulates microtubule dynamics during congression |
| AURKA | Mitotic kinase | Regulates spindle assembly and congression |
| AURKB | Chromosomal passenger kinase | Regulates kinetochore-microtubule attachments |
| KIF2A | Kinesin-13 motor | Regulates microtubule depolymerization during congression |
| KIF4A | Chromokinesin | Contributes to chromosome alignment |
| DYNEIN | Minus-end directed motor | Regulates chromosome movement and congression |
| CLASP1 | Microtubule plus-end tracking protein | Regulates kinetochore-microtubule dynamics |
How Is regulation of metaphase plate congression Regulated?
Regulation of metaphase plate congression is controlled by phosphorylation events, most notably Plk1-dependent phosphorylation of the astrin-kinastrin complex, which promotes formation and maintenance of a metaphase plate. Motor protein activity, including that of CENP-E and KIF18A, is also subject to regulatory inputs that ensure timely congression [3,6]. The spindle assembly checkpoint monitors congression and delays anaphase until alignment is complete. Additionally, centromeric non-coding transcription may influence chromosomal instability and indirectly modulate congression regulation.
regulation of metaphase plate congression and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| PLK1 | Cancer, chromosomal instability | Knockout or point-mutation cell lines; live-cell imaging |
| CENP-E (KIF10) | Cancer, aneuploidy | Knockout or overexpression models; kinetochore tracking |
| KIF18A | Cancer, cytokinesis defects | Knockout and tagged knock-in for live imaging |
| NF1 | Neurofibromatosis type 1 | Point-mutation and knockout models; spindle localization assays |
| CDC20 | Lung carcinoma prognosis | Overexpression and knockout in lung cancer cell lines |
Chromosomal instability and cancer
Defects in the regulation of metaphase plate congression lead to chromosomal instability and aneuploidy, which are hallmarks of cancer [1,5]. Altered expression of cell division cycle-associated genes, including congression regulators, has prognostic significance in human lung carcinoma. Targeting congression regulators such as Plk1 and CENP-E is an active area of anti-cancer therapeutic development [2,3].
Neurofibromatosis type 1
Neurofibromin, the protein product of the NF1 gene, localizes to the spindle and functions in chromosome congression. Its nuclear import mechanism is required for this localization, linking congression regulation to neurofibromatosis type 1 biology.
Developmental disorders and aneuploidy syndromes
Errors in chromosome congression can result in aneuploidy, which is associated with developmental disorders and miscarriage. Understanding the regulatory mechanisms of congression may provide insights into the origins of aneuploidy-related conditions [1,5].
From regulation of metaphase plate congression-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of CENP-E impair chromosome congression? | CENP-E knockout cell line with live-cell imaging |
| How does Plk1 phosphorylation of astrin regulate metaphase plate maintenance? | Point-mutation knock-in of phospho-deficient astrin |
| Does KIF18A coordinate congression with cytokinesis? | KIF18A knockout and tagged knock-in for live imaging |
| Is neurofibromin spindle localization required for congression? | NF1 knockout and nuclear import mutant knock-in |
| Does overexpression of CDC20 affect congression in lung cancer cells? | CDC20 overexpression in lung carcinoma cell lines |
| Is the kinesin-7/BUB3.3 module conserved in plants? | Arabidopsis knockout and point-mutation lines |
How to Study the regulation of metaphase plate congression Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Live-cell imaging | Chromosome alignment dynamics at metaphase plate | Assessing congression defects in knockout cells [1,2] |
| Kinetochore tracking | Velocity, oscillation, and alignment errors | Quantifying congression in motor mutants [3,6] |
| CRISPR knockout | Loss-of-function phenotype | Testing causal role of candidate genes [2,3] |
| CRISPR point mutation | Effect of specific phosphorylation sites | Dissecting Plk1-astrin signaling |
| Phosphoproteomics | Phosphorylation events on spindle proteins | Identifying regulatory inputs |
| Immunofluorescence | Spindle localization of proteins | Validating neurofibromin spindle localization |
| RNA-seq | Expression changes in cell cycle genes | Linking congression regulators to cancer prognosis |
| CRISPR library screening | Identification of novel congression regulators | High-throughput discovery |
Live-cell imaging of chromosome congression
Live-cell imaging using fluorescently tagged histones and kinetochore proteins allows direct visualization of chromosome alignment at the metaphase plate. This method is essential for quantifying congression rates and identifying defects in regulatory mutants [2,3].
Kinetochore tracking and quantitative analysis
Automated tracking of kinetochores enables measurement of congression velocity, oscillation, and alignment errors. Such analyses have been used to demonstrate the role of CENP-E in kinetochore-microtubule capture and KIF18A in coordinated congression.
CRISPR-based perturbation and phenotypic screening
CRISPR knockout and point-mutation models allow causal testing of candidate regulators of congression [2,3,6]. Library screening can identify novel modulators of metaphase plate congression.
Proteomics and phosphoproteomics
Mass spectrometry-based approaches can identify phosphorylation events, such as Plk1-dependent phosphorylation of astrin-kinastrin, that regulate congression. Proteomic analysis of spindle fractions can reveal novel congression regulators.
How CRISPR Can Be Used to Study GO:0090235 regulation of metaphase plate congression
Knockout
CRISPR knockout of genes such as CENP-E, PLK1, or KIF18A enables loss-of-function studies to determine their requirement for metaphase plate congression [2,3,6]. Knockout cell lines can be analyzed by live-cell imaging to quantify alignment defects.
Point Mutation
Point-mutation knock-in can be used to test the functional significance of specific phosphorylation sites, such as those in astrin targeted by Plk1. This approach distinguishes regulatory phosphorylation from structural roles.
Knock-in
Tagged knock-in of congression regulators, such as KIF18A or CENP-E, allows real-time visualization of their dynamics at the kinetochore and spindle [3,6]. Endogenous tagging preserves physiological expression levels.
Overexpression
Overexpression of candidate genes like CDC20 can model the dysregulated expression observed in cancers and test whether increased levels perturb congression. Overexpression models complement knockout studies to reveal dosage effects.
How EDITGENE Supports regulation of metaphase plate congression Research
Researchers studying regulation of metaphase plate congression-related genes often need to determine whether a candidate gene is causally involved in chromosome alignment or merely correlated with mitotic phenotypes. EDITGENE provides CRISPR-based cell model services to enable such causal experiments.
Contact EDITGENE today to design your custom CRISPR model for regulation of metaphase plate congression research.
Frequently Asked Questions About regulation of metaphase plate congression
What is GO:0090235 regulation of metaphase plate congression?
GO:0090235 is a Gene Ontology biological process term defined as any process that modulates the rate, frequency, or extent of metaphase plate congression, the alignment of chromosomes at the metaphase plate, a plane halfway between the poles of the spindle.
What genes are involved in regulation of metaphase plate congression?
Key genes include CENP-E (KIF10), PLK1, KIF18A, NF1 (neurofibromin), astrin (SPAG5), kinastrin (SKAP), and BUB3.3, among others [2,3,4,6,8].
How is metaphase plate congression regulated?
It is regulated by motor proteins such as CENP-E and KIF18A, kinases such as Plk1, and non-motor proteins like neurofibromin that localize to the spindle [2,3,6,8].
What happens if regulation of metaphase plate congression fails?
Failure leads to chromosome misalignment, aneuploidy, and chromosomal instability, which are associated with cancer and developmental disorders [1,5,7].
Which motor protein is most important for chromosome congression?
CENP-E, a kinesin-7 motor, is essential for kinetochore-microtubule capture and chromosome alignment during congression.
How does Plk1 regulate metaphase plate congression?
Plk1 associates with the astrin-kinastrin complex to promote formation and maintenance of a metaphase plate.
Is regulation of metaphase plate congression conserved in plants?
Yes, a kinetochore-associated kinesin-7 motor cooperates with BUB3.3 to regulate mitotic chromosome congression in Arabidopsis thaliana.
What diseases are linked to defects in chromosome congression?
Chromosomal instability and aneuploidy in cancer, as well as neurofibromatosis type 1 through neurofibromin function, are linked to congression defects [5,7,8].
How can I study regulation of metaphase plate congression in the lab?
Live-cell imaging, kinetochore tracking, CRISPR knockout or point-mutation models, and phosphoproteomics are commonly used [1,2,3,6].
What CRISPR models are available for congression research?
Knockout, point-mutation knock-in, tagged knock-in, and overexpression models can be generated for genes such as CENP-E, PLK1, KIF18A, and NF1 [2,3,6,8].
Conclusion
GO:0090235 regulation of metaphase plate congression is a critical biological process that ensures accurate chromosome alignment during mitosis. Its dysregulation leads to chromosomal instability and aneuploidy, with direct implications for cancer and developmental disorders [1,5,7]. Continued research using CRISPR-based models and advanced imaging will further elucidate the regulatory networks controlling congression and may reveal new therapeutic targets [2,3,6].
References
- 1. Maiato H et al.. 2017. Mechanisms of Chromosome Congression during Mitosis.. Biology (Basel) 6(1) PMID: 28218637
- 2. Geraghty Z et al.. 2021. The association of Plk1 with the astrin-kinastrin complex promotes formation and maintenance of a metaphase plate.. J Cell Sci 134(1) PMID: 33288550
- 3. Yu KW et al.. 2019. Mechanisms of kinesin-7 CENP-E in kinetochore-microtubule capture and chromosome alignment during cell division.. Biol Cell 111(6):143-160 PMID: 30784092
- 4. Tang X et al.. 2024. A kinetochore-associated kinesin-7 motor cooperates with BUB3.3 to regulate mitotic chromosome congression in Arabidopsis thaliana.. Nat Plants 10(11):1724-1736 PMID: 39414927
- 5. Cáceres-Gutiérrez R et al.. 2017. Centromeric Non-coding Transcription: Opening the Black Box of Chromosomal Instability?. Curr Genomics 18(3):227-235 PMID: 28603453
- 6. Lee SH et al.. 2025. Kinesin-like protein KIF18A is required for faithful coordination of chromosome congression with cytokinesis.. FEBS J 292(15):3910-3925 PMID: 39954259
- 7. Chen C et al.. 2020. Analysis of the Expression of Cell Division Cycle-Associated Genes and Its Prognostic Significance in Human Lung Carcinoma: A Review of the Literature Databases.. Biomed Res Int 2020:6412593 PMID: 32104702
- 8. Koliou X et al.. 2016. Nuclear import mechanism of neurofibromin for localization on the spindle and function in chromosome congression.. J Neurochem 136(1):78-91 PMID: 26490262
