GO:1903724 positive regulation of centriole elongation: Centriole Assembly Control, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1903724 describes any process that activates or increases the frequency, rate or extent of centriole elongation, a late step in centriole biogenesis.
• C2CD3 is a genetically defined positive regulator of centriole elongation; loss-of-function mutations cause oral-facial-digital syndrome and impaired centriole elongation.
• CPAP (CENPJ) is a core centriolar protein whose levels and activity set centriole length; its positive regulators include CEP120 and its negative regulator Centrobin [2,5].
• CEP120 interacts with CPAP and positively regulates centriole elongation, linking centriolar recruitment to elongation control.
• USP33 deubiquitinates CP110, a negative regulator of centriole elongation, thereby indirectly influencing centriole length.
• Dysregulation of centriole elongation is linked to skeletal malformation, ciliopathies, and cancer-relevant centrosome amplification [1,4,7].
Description
Centrioles are microtubule-based structures that template cilia and centrosomes, and their length is tightly controlled during the cell cycle. Positive regulation of centriole elongation (GO:1903724) refers to the processes that activate or increase the rate, frequency, or extent of centriole elongation. This step is essential for building a functional centrosome and for ciliogenesis, and its disruption is associated with developmental disorders and cancer [1,4]. Researchers study this term to understand how centriolar proteins such as C2CD3, CPAP, and CEP120 cooperate to extend the centriole barrel and how their dysregulation leads to disease [1,2,5]. Because centriole elongation is a discrete, measurable process, it is a tractable target for CRISPR-based functional genomics and for high-content imaging screens [1,5].
positive regulation of centriole elongation At A Glance
| GO ID | GO:1903724 |
|---|---|
| GO term | positive regulation of centriole elongation |
| Ontology | biological_process |
| Synonym | activation of centriole elongation; up regulation of centriole elongation; up-regulation of centriole elongation; upregulation of centriole elongation |
| Major function | Activates or increases the frequency, rate or extent of centriole elongation |
| Related process | Centriole elongation (GO:0034451) and centriole assembly |
| Key positive regulators | C2CD3, CEP120, CPAP (CENPJ) |
| Key negative regulators | CP110, Centrobin (CNTROB) |
| Disease relevance | Oral-facial-digital syndrome, skeletal malformation, ciliopathies, cancer |
What Is GO:1903724?
GO:1903724 is a biological process term meaning any process that activates or increases the frequency, rate or extent of centriole elongation. In practice, it covers the molecular events that promote the extension of the centriolar microtubule barrel, including recruitment of elongation-promoting proteins and their positive regulation of centriole length [1,5].
Why Is positive regulation of centriole elongation Important in Cell Biology?
Positive regulation of centriole elongation is important because centriole length determines centrosome and cilium function, and its dysregulation is directly linked to human disease. Loss of the positive regulator C2CD3 causes oral-facial-digital syndrome with impaired centriole elongation, while disruption of the distal appendage protein CEP164 causes skeletal malformation in mice. In addition, centriole elongation control intersects with cilia assembly pathways involving HDAC3 and HDAC8, and with CP110 regulation by USP33. Understanding this process therefore informs developmental biology, ciliopathy research, and cancer biology, where centrosome amplification is common [1,6].
• Defines a genetically tractable step in centriole biogenesis that can be assayed by imaging.
• C2CD3 mutations cause oral-facial-digital syndrome, linking the term to a Mendelian disorder.
• CEP120-CPAP interaction provides a molecular mechanism for positive regulation of elongation.
• Centrobin limits CPAP levels to restrict centriole length during elongation.
• USP33 controls CP110 stability, indirectly affecting centriole elongation.
• CEP164 disruption causes skeletal malformation in mice, connecting centriole biology to bone development.
• HDAC3 and HDAC8 are required for cilia assembly and elongation, linking elongation control to ciliogenesis.
• POC5 regulation by ERα in scoliotic cells suggests hormone-linked control of centriolar proteins.
• Centriole elongation defects are relevant to cancer because centrosome amplification promotes genomic instability [1,6].
• The pathway is suitable for CRISPR knockout, knock-in, and overexpression screens [1,5].
What Happens During positive regulation of centriole elongation?
Initiation of centriole elongation
In simple terms: The cell starts to build a longer centriole by recruiting the right proteins.
Centriole elongation begins after the cartwheel and microtubule barrel are established. Positive regulators such as C2CD3 are required for this step, and loss of C2CD3 impairs centriole elongation in human cells and causes oral-facial-digital syndrome. This initiation phase sets the stage for subsequent growth of the centriolar microtubules.
CPAP recruitment and microtubule extension
In simple terms: CPAP is a core building block that helps the centriole grow longer.
CPAP (CENPJ) is a centriolar protein whose activity is central to centriole elongation. CEP120 interacts with CPAP and positively regulates centriole elongation, providing a direct mechanism for promoting barrel extension. Conversely, Centrobin-mediated regulation of CPAP levels limits centriole length during the elongation stage, showing that elongation is balanced by positive and negative inputs.
Regulation of CP110 and centriole length
In simple terms: CP110 acts as a brake on centriole growth, and removing it allows elongation.
CP110 is a negative regulator of centriole elongation. USP33 regulates centrosome biogenesis via deubiquitination of CP110, thereby controlling CP110 stability and indirectly influencing centriole elongation. This regulatory layer ensures that centrioles do not over-elongate and that centrosome duplication remains coordinated with the cell cycle.
Cilia assembly and elongation coupling
In simple terms: Once the centriole is long enough, it can template a cilium.
Centriole elongation is coupled to cilia assembly. HDAC3 and HDAC8 are required for cilia assembly and elongation, linking centriolar elongation control to the formation of the ciliary axoneme. Disruption of the distal appendage protein CEP164 causes skeletal malformation in mice, further connecting centriole-associated structures to developmental processes.
Hormonal and tissue-specific modulation
In simple terms: Some tissues adjust centriolar proteins in response to hormones.
POC5 is differentially regulated by ERα in human normal and scoliotic cells, indicating that centriolar protein expression can be modulated by hormonal signaling in a tissue-specific manner. This suggests that positive regulation of centriole elongation may be tuned by physiological cues beyond the core cell-cycle machinery.
Key Genes Involved in GO:1903724 positive regulation of centriole elongation
The following genes and proteins have been experimentally implicated in positive regulation of centriole elongation or in the control of centriole length.
| Gene | Major Role | Research Relevance |
|---|---|---|
| C2CD3 | Positive regulator of centriole elongation | Mutations cause oral-facial-digital syndrome; loss impairs elongation |
| CPAP (CENPJ) | Core centriolar protein required for elongation | Target of CEP120 and Centrobin regulation [2,5] |
| CEP120 | Interacts with CPAP to promote elongation | Positive regulator of centriole elongation |
| CNTROB (Centrobin) | Limits CPAP levels during elongation | Negative regulator that restricts centriole length |
| CP110 | Negative regulator of centriole elongation | Deubiquitinated by USP33 |
| USP33 | Deubiquitinates CP110 | Regulates centrosome biogenesis |
| CEP164 | Distal appendage protein | Disruption causes skeletal malformation in mice |
| HDAC3 | Required for cilia assembly and elongation | Histone deacetylase linked to ciliogenesis |
| HDAC8 | Required for cilia assembly and elongation | Histone deacetylase linked to ciliogenesis |
| POC5 | Centriolar protein regulated by ERα | Differential regulation in scoliotic cells |
| ERα (ESR1) | Regulates POC5 expression | Hormonal control of centriolar proteins |
| PLK4 | Master regulator of centriole duplication | Upstream of elongation control |
| STIL | Centriole duplication factor | Cooperates with PLK4 in centriole biogenesis |
| SAS6 | Cartwheel component | Required for centriole assembly |
| CEP152 | Centriole duplication protein | Associated with centriole biogenesis |
| CEP63 | Centriole duplication protein | Associated with centriole biogenesis |
| CEP192 | Centrosome maturation factor | Upstream regulator of centriole assembly |
How Is positive regulation of centriole elongation Regulated?
Positive regulation of centriole elongation is controlled by a balance of positive and negative factors. C2CD3 acts as a positive regulator required for elongation, while Centrobin limits CPAP levels to restrict centriole length during the elongation stage. CEP120 interacts with CPAP to promote elongation, and USP33 controls CP110 stability through deubiquitination, thereby influencing centriole length. In addition, HDAC3 and HDAC8 are required for cilia assembly and elongation, linking chromatin-modifying enzymes to this process. Hormonal signaling through ERα can modulate POC5, suggesting tissue-specific regulation.
positive regulation of centriole elongation and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| C2CD3 | Oral-facial-digital syndrome | Knockout in human cells; point-mutation knock-in |
| CEP164 | Skeletal malformation | Mouse knockout |
| CP110 | Centrosome amplification / cancer | Overexpression and knockout cell lines |
| POC5 | Scoliosis | ERα-regulated overexpression in patient cells |
| HDAC3 / HDAC8 | Ciliopathy-related cilia assembly defects | Knockout and inhibitor treatment |
Oral-facial-digital syndrome and centriole elongation defects
Mutations in C2CD3, a positive regulator of centriole elongation, cause oral-facial-digital syndrome. Loss of C2CD3 impairs centriole elongation, demonstrating that this process is essential for normal craniofacial and digital development.
Skeletal malformation and ciliopathies
Disruption of the distal appendage protein CEP164 causes skeletal malformation in mice, linking centriole-associated structures to bone development. HDAC3 and HDAC8 are required for cilia assembly and elongation, connecting centriole elongation control to ciliopathy-related pathways.
Cancer and centrosome amplification
Centrosome amplification is a hallmark of many cancers, and regulators of centriole elongation such as CP110 and USP33 influence centrosome number and stability. Dysregulation of centriole elongation can therefore contribute to genomic instability [1,6].
Scoliosis and hormonal regulation
POC5 is differentially regulated by ERα in human normal and scoliotic cells, suggesting that hormonal control of centriolar proteins may contribute to scoliosis pathogenesis.
From positive regulation of centriole elongation-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is C2CD3 required for centriole elongation? | C2CD3 knockout cell line |
| Does CEP120 promote elongation via CPAP? | CEP120 knockout and knock-in |
| How does Centrobin limit centriole length? | Centrobin overexpression and knockout |
| Does USP33 control CP110 stability? | USP33 knockout with CP110 tagging |
| Does ERα regulate POC5 in scoliosis? | ERα knockout and POC5 overexpression |
| Is CEP164 required for skeletal development? | Cep164 knockout mouse |
How to Study the positive regulation of centriole elongation Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Immunofluorescence | Centriole length and number | Quantifying elongation defects |
| CRISPR knockout | Gene requirement for elongation | Testing C2CD3, CEP120, CPAP [1,5] |
| CRISPR knock-in | Patient variant effects | Modeling C2CD3 mutations |
| Co-immunoprecipitation | Protein-protein interactions | CEP120-CPAP binding |
| Ubiquitination assay | CP110 stability | USP33 function |
| RNA-seq | Gene expression changes | ERα-POC5 regulation |
| Proteomics | Protein abundance changes | Centriolar protein levels |
| High-content imaging | Cell-to-cell variability | Screening elongation regulators |
High-content imaging of centriole length
Centriole elongation is typically measured by immunofluorescence using antibodies against centriolar markers such as CPAP or CEP120, followed by high-content imaging to quantify centriole length in thousands of cells [1,5].
CRISPR knockout and knock-in screens
CRISPR knockout and knock-in approaches allow causal testing of candidate genes such as C2CD3, CEP120, and CPAP in centriole elongation [1,5]. Point mutations can be introduced to model patient variants.
Protein interaction and stability assays
Co-immunoprecipitation and ubiquitination assays can test interactions such as CEP120-CPAP and USP33-CP110, which are central to elongation control [5,6].
Transcriptomic and proteomic profiling
RNA-seq and proteomics can identify downstream changes in centriolar gene expression, such as ERα-dependent regulation of POC5 in scoliotic cells.
How CRISPR Can Be Used to Study GO:1903724 positive regulation of centriole elongation
Knockout
CRISPR knockout of C2CD3, CEP120, or CPAP causes loss of centriole elongation, providing direct causal evidence for their positive regulatory roles [1,5]. Knockout of USP33 stabilizes CP110 and alters centriole length.
Point Mutation
Point mutations in C2CD3 identified in oral-facial-digital syndrome can be introduced by CRISPR to model patient-specific defects in centriole elongation.
Knock-in
Knock-in of tagged CPAP or CEP120 allows live-cell imaging of centriole elongation dynamics and protein localization.
Overexpression
Overexpression of Centrobin limits CPAP levels and restricts centriole length, while overexpression of CEP120 promotes elongation, enabling gain-of-function studies [2,5].
How EDITGENE Supports positive regulation of centriole elongation Research
Researchers studying positive regulation of centriole elongation-related genes often need to determine whether a candidate gene is causally involved in centriole length control or is merely correlated with it. EDITGENE provides the CRISPR tools and cell models required to move from correlation to causation.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of centriole elongation research.
Frequently Asked Questions About positive regulation of centriole elongation
What is positive regulation of centriole elongation (GO:1903724)?
It is a biological process term describing any process that activates or increases the frequency, rate or extent of centriole elongation.
What genes are involved in positive regulation of centriole elongation?
Key genes include C2CD3, CEP120, CPAP (CENPJ), and regulators such as Centrobin, CP110, and USP33 [1,2,5,6].
How is centriole elongation measured in the lab?
It is commonly measured by immunofluorescence and high-content imaging of centriolar markers to quantify centriole length [1,5].
What diseases are linked to centriole elongation defects?
Oral-facial-digital syndrome, skeletal malformation, ciliopathies, and cancer-related centrosome amplification have been linked to centriole elongation defects [1,4,6,7].
What is the role of C2CD3 in centriole elongation?
C2CD3 is a positive regulator of centriole elongation; its loss impairs elongation and causes oral-facial-digital syndrome.
How does CEP120 regulate centriole elongation?
CEP120 interacts with CPAP and positively regulates centriole elongation.
What is the role of CPAP in centriole elongation?
CPAP is a core centriolar protein required for elongation, and its levels are limited by Centrobin [2,5].
How does USP33 affect centriole elongation?
USP33 deubiquitinates CP110, a negative regulator of centriole elongation, thereby influencing centriole length.
Are HDAC3 and HDAC8 involved in centriole elongation?
HDAC3 and HDAC8 are required for cilia assembly and elongation, linking them to centriole-related processes.
What CRISPR models are used to study centriole elongation?
Knockout, point mutation, knock-in, and overexpression models are used to test genes such as C2CD3, CEP120, and CPAP [1,5].
Conclusion
Positive regulation of centriole elongation (GO:1903724) is a genetically defined process that controls centriole length through factors such as C2CD3, CEP120, and CPAP, balanced by negative regulators like Centrobin and CP110 [1,2,5,6]. Its dysregulation is linked to oral-facial-digital syndrome, skeletal malformation, ciliopathies, and cancer [1,4,6,7]. CRISPR-based models and high-content imaging provide robust tools to dissect this process and identify new therapeutic targets.
References
- 1. Thauvin-Robinet C et al.. 2014. The oral-facial-digital syndrome gene C2CD3 encodes a positive regulator of centriole elongation.. Nat Genet 46(8):905-11 PMID: 24997988
- 2. Gudi R et al.. 2015. Centrobin-mediated regulation of the centrosomal protein 4.1-associated protein (CPAP) level limits centriole length during elongation stage.. J Biol Chem 290(11):6890-902 PMID: 25616662
- 3. Hassan A et al.. 2023. Differential Regulation of POC5 by ERα in Human Normal and Scoliotic Cells.. Genes (Basel) 14(5) PMID: 37239471
- 4. Yamaguchi H et al.. 2024. Disruption of distal appendage protein CEP164 causes skeletal malformation in mice.. Biochem Biophys Res Commun 741:151063 PMID: 39612644
- 5. Lin YN et al.. 2013. CEP120 interacts with CPAP and positively regulates centriole elongation.. J Cell Biol 202(2):211-9 PMID: 23857771
- 6. Li J et al.. 2013. USP33 regulates centrosome biogenesis via deubiquitination of the centriolar protein CP110.. Nature 495(7440):255-9 PMID: 23486064
- 7. Park SA et al.. 2019. HDAC3 and HDAC8 are required for cilia assembly and elongation.. Biol Open 8(8) PMID: 31362948
