GO:0061159 establishment of bipolar cell polarity involved in cell morphogenesis: Cell Morphogenesis Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0061159 describes the specification and formation of bipolar intracellular organization or cell growth patterns that contribute to cell morphogenesis, where bipolar organization is a mirror image along an axis from a plane.
• This process is fundamental to asymmetric cell division, neuronal polarity, and directed cell growth, and is driven by cytoskeletal and signaling machinery.
• Wnt signaling establishes microtubule polarity in neurons through regulation of Kinesin-13, providing a molecular link between extracellular cues and bipolar organization.
• In fission yeast, genes such as tea1, tea2, and tip1 are required for bipolar growth and cell morphogenesis, revealing conserved mechanisms of polarity establishment.
• Early stages of spindle formation in plant endosperm show that chromosome and microtubule cycles can be independent, highlighting diversity in bipolar organization across systems.
• Dysregulation of bipolar polarity is associated with developmental defects and cancer, making it a target for CRISPR-based functional studies.
Description
The establishment of bipolar cell polarity involved in cell morphogenesis (GO:0061159) is a biological process that specifies and forms a bipolar intracellular organization or cell growth pattern, where bipolar organization is defined as a mirror image along an axis from a plane. This process is essential for asymmetric cell division, neuronal development, and directed cell growth, and it relies on the coordinated action of signaling pathways and cytoskeletal components. Understanding this term is critical for researchers studying cell morphogenesis, as defects in bipolar polarity can lead to developmental abnormalities and diseases such as cancer. The QuickGO definition provides a precise framework for annotating genes and proteins involved in this process, enabling systematic functional studies. Recent advances in CRISPR gene editing and high-throughput screening have made it possible to dissect the molecular players that establish bipolar polarity in various model systems.
establishment of bipolar cell polarity involved in cell morphogenesis At A Glance
| GO ID | GO:0061159 |
|---|---|
| GO term | establishment of bipolar cell polarity involved in cell morphogenesis |
| Ontology | biological_process |
| Synonym | None |
| Major function | Specification and formation of bipolar intracellular organization or cell growth patterns contributing to cell morphogenesis |
| Related processes | Cell polarity establishment, cytoskeleton organization, asymmetric cell division |
| Key regulators | Wnt signaling, Kinesin-13, tea1, tea2, tip1 |
| Model systems | Neurons, fission yeast, plant endosperm |
What Is GO:0061159?
GO:0061159, establishment of bipolar cell polarity involved in cell morphogenesis, refers to the specification and formation of bipolar intracellular organization or cell growth patterns that contribute to cell morphogenesis. Bipolar organization is the organization that is a mirror image along an axis from a plane. This process encompasses the molecular events that break symmetry and establish two distinct poles within a cell, guiding directional growth and division.
Why Is establishment of bipolar cell polarity involved in cell morphogenesis Important in Cell Biology?
Understanding GO:0061159 is crucial because bipolar cell polarity underlies fundamental processes such as asymmetric cell division, neuronal polarization, and directed cell growth. Disruption of this process can lead to developmental disorders and cancer, as proper polarity is essential for tissue architecture and cell fate determination. Moreover, the molecular mechanisms that establish bipolar polarity are conserved across species, from yeast to humans, making it a valuable target for comparative and functional genomics. Research into this term also informs regenerative medicine and tissue engineering, where controlled cell polarity is needed for proper tissue formation.
• Bipolar polarity is essential for asymmetric cell division and cell fate specification.
• Defects in polarity establishment are linked to cancer and developmental abnormalities.
• Wnt signaling regulates microtubule polarity in neurons via Kinesin-13, linking extracellular cues to polarity.
• Fission yeast genes tea1, tea2, and tip1 are critical for bipolar growth and morphogenesis.
• Plant endosperm studies reveal independent chromosome and microtubule cycles during early spindle formation.
• Understanding polarity mechanisms can inform regenerative medicine and tissue engineering.
• CRISPR screens enable systematic identification of genes required for bipolar polarity.
• Conservation of polarity machinery across species facilitates translational research.
• Bipolar organization is a mirror image along an axis, providing a geometric framework for study.
• Research on GO:0061159 aids in deciphering how cells interpret spatial cues to form complex shapes.
What Happens During establishment of bipolar cell polarity involved in cell morphogenesis?
Symmetry Breaking and Axis Specification
In simple terms: The cell decides which way is 'up' and 'down' to form two opposite poles.
The first step in establishing bipolar polarity is symmetry breaking, where a cell selects an axis along which two distinct poles will form. This involves the localization of polarity determinants and the reorganization of the cytoskeleton. In neurons, Wnt signaling establishes microtubule polarity through regulation of Kinesin-13, which helps specify the axon and dendrites. In fission yeast, genes such as tea1 and tea2 are required for bipolar growth, marking the cell ends for polarized growth.
Cytoskeletal Reorganization
In simple terms: The cell's internal skeleton rearranges to support the two poles.
After axis specification, the cytoskeleton undergoes dramatic reorganization. Microtubules and actin filaments are polarized to deliver materials to the growing poles. Kinesin-13 regulates microtubule dynamics to establish neuronal polarity. In fission yeast, tip1 is involved in maintaining polarized growth at cell ends. In plant endosperm, early spindle formation shows independence of chromosome and microtubule cycles, indicating diverse mechanisms of bipolar organization.
Polarized Growth and Morphogenesis
In simple terms: The cell grows outward at the two poles to take on a bipolar shape.
Once the cytoskeleton is polarized, the cell undergoes directed growth at the two poles. This involves targeted secretion and cell wall remodeling. In fission yeast, bipolar growth is a hallmark of cell morphogenesis, and mutants in tea1, tea2, or tip1 fail to establish proper bipolar growth. In neurons, polarized growth leads to axon extension and dendrite formation, processes critical for neural circuit formation.
Feedback and Maintenance
In simple terms: The cell checks and maintains its two poles over time.
Bipolar polarity is maintained through feedback mechanisms that reinforce the initial symmetry break. This includes positive feedback loops that stabilize polarity factors at the poles and negative feedback that prevents ectopic pole formation. In fission yeast, the tea1-tea2-tip1 module is part of a feedback network that maintains bipolar growth. In neurons, Wnt signaling continues to regulate microtubule polarity to sustain neuronal morphology.
Key Genes Involved in GO:0061159 establishment of bipolar cell polarity involved in cell morphogenesis
The following genes and proteins are key players in the establishment of bipolar cell polarity involved in cell morphogenesis, as identified in model organisms and human cells.
| Gene | Major Role | Research Relevance |
|---|---|---|
| Kinesin-13 | Regulates microtubule dynamics downstream of Wnt signaling | Neuronal polarity establishment |
| tea1 | Cell end marker for bipolar growth | Fission yeast morphogenesis |
| tea2 | Kinesin-like motor for polarized growth | Fission yeast morphogenesis |
| tip1 | Maintains polarized growth at cell ends | Fission yeast morphogenesis |
| Wnt ligands | Extracellular cues for polarity | Neuronal polarity |
| Frizzled receptors | Transduce Wnt signals | Neuronal polarity |
| Dishevelled | Intracellular Wnt signaling mediator | Neuronal polarity |
| GSK-3β | Kinase regulating microtubule polarity | Neuronal polarity |
| APC | Microtubule plus-end tracking protein | Neuronal polarity |
| Par3 | Polarity determinant | Asymmetric cell division |
| Par6 | Polarity determinant | Asymmetric cell division |
| aPKC | Kinase regulating polarity | Asymmetric cell division |
| Cdc42 | Rho GTPase for polarity | Cytoskeletal reorganization |
| RhoA | Rho GTPase for polarity | Cytoskeletal reorganization |
| Actin | Cytoskeletal component | Polarized growth |
| Tubulin | Microtubule subunit | Polarized growth |
| EB1 | Microtubule plus-end tracking protein | Neuronal polarity |
How Is establishment of bipolar cell polarity involved in cell morphogenesis Regulated?
The establishment of bipolar cell polarity is regulated by extracellular signals and intracellular feedback loops. Wnt signaling is a key regulator in neurons, where it controls microtubule polarity through Kinesin-13. In fission yeast, the tea1-tea2-tip1 module is regulated by cell cycle cues and spatial landmarks. Additionally, post-translational modifications and small GTPases such as Cdc42 and RhoA modulate cytoskeletal dynamics during polarity establishment.
establishment of bipolar cell polarity involved in cell morphogenesis and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| Kinesin-13 | Cancer, neurodevelopmental disorders | Knockout in neurons |
| tea1 | Cell morphogenesis defects | Fission yeast knockout |
| tea2 | Cell morphogenesis defects | Fission yeast knockout |
| tip1 | Cell morphogenesis defects | Fission yeast knockout |
| Wnt signaling components | Cancer, neurodevelopmental disorders | Knockout/overexpression in neurons |
Cancer
Disruption of bipolar cell polarity can lead to uncontrolled cell division and cancer. Loss of polarity is a hallmark of epithelial-to-mesenchymal transition and tumor progression. Genes such as Kinesin-13 and Wnt signaling components are implicated in cancer cell polarity defects.
Neurodevelopmental Disorders
Defects in neuronal polarity establishment can cause neurodevelopmental disorders, including intellectual disability and autism spectrum disorders. Wnt signaling and Kinesin-13 mutations have been linked to abnormal neuronal morphology.
Developmental Abnormalities
In model organisms like fission yeast, mutations in tea1, tea2, or tip1 lead to abnormal cell morphogenesis, providing insights into conserved developmental pathways.
From establishment of bipolar cell polarity involved in cell morphogenesis-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X regulate bipolar polarity? | Knockout in neurons or fission yeast |
| Does mutation Y affect polarity establishment? | Point mutation knock-in |
| How does gene Z localize during polarity? | Tagged knock-in (e.g., GFP) |
| Does overexpression of gene W alter polarity? | Overexpression cell line |
| What is the role of gene V in cancer polarity? | Cancer cell line knockout |
| Can CRISPR screen identify novel polarity genes? | Genome-wide CRISPR library screening |
How to Study the establishment of bipolar cell polarity involved in cell morphogenesis Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Live-cell imaging | Dynamics of polarity markers | Neuronal polarity, yeast morphogenesis |
| CRISPR knockout screening | Gene requirement for polarity | Identification of novel polarity genes |
| Proteomics | Protein interactions and modifications | Polarity complex composition |
| RNA-seq | Transcriptional changes | Polarity establishment pathways |
| Immunofluorescence | Protein localization | Polarity marker distribution |
| FRAP | Protein dynamics at poles | Polarity maintenance |
| Atomic force microscopy | Cell surface topography | Morphogenesis quantification |
Live-Cell Imaging
Live-cell imaging of fluorescently tagged polarity markers (e.g., GFP-tubulin, GFP-tea1) allows real-time visualization of bipolar establishment in neurons and fission yeast.
CRISPR Screening
Genome-wide CRISPR knockout screens can identify genes required for bipolar polarity, followed by validation with targeted knockouts.
Proteomics
Proteomic analysis of isolated cell poles or polarity complexes can reveal interacting partners and post-translational modifications.
Transcriptomics
RNA-seq of cells undergoing polarity establishment can uncover gene expression changes that drive morphogenesis.
How CRISPR Can Be Used to Study GO:0061159 establishment of bipolar cell polarity involved in cell morphogenesis
Knockout
CRISPR knockout of candidate genes such as Kinesin-13 or tea1 can abolish bipolar polarity, revealing essential roles in morphogenesis.
Point Mutation
Introducing point mutations in polarity genes (e.g., Kinesin-13 motor domain) can dissect specific functions without complete loss of protein.
Knock-in
Tagged knock-in of polarity markers (e.g., GFP-tea1) enables live imaging of bipolar establishment in native genomic context.
Overexpression
Overexpression of polarity regulators (e.g., Wnt components) can induce ectopic polarity or enhance bipolar growth, providing gain-of-function insights.
How EDITGENE Supports establishment of bipolar cell polarity involved in cell morphogenesis Research
Researchers studying establishment of bipolar cell polarity involved in cell morphogenesis-related genes often need to determine whether a candidate gene is causally involved in polarity establishment or is merely correlated. EDITGENE provides a comprehensive suite of CRISPR services to enable such functional studies.
Contact EDITGENE today to design your custom CRISPR model for establishment of bipolar cell polarity involved in cell morphogenesis research.
Frequently Asked Questions About establishment of bipolar cell polarity involved in cell morphogenesis
What is GO:0061159?
GO:0061159 is the establishment of bipolar cell polarity involved in cell morphogenesis, a biological process where a cell specifies and forms a bipolar organization or growth pattern that contributes to its morphogenesis.
What genes are involved in establishment of bipolar cell polarity involved in cell morphogenesis?
Key genes include Kinesin-13, tea1, tea2, tip1, and components of the Wnt signaling pathway.
How is bipolar cell polarity established?
It involves symmetry breaking, cytoskeletal reorganization, polarized growth, and feedback maintenance, driven by signaling and cytoskeletal proteins.
Why is bipolar cell polarity important?
It is essential for asymmetric cell division, neuronal development, and tissue morphogenesis; defects can lead to cancer and developmental disorders.
What model systems are used to study GO:0061159?
Neurons, fission yeast, and plant endosperm are common models.
How can CRISPR be used to study bipolar polarity?
CRISPR knockout, point mutation, knock-in, and overexpression can dissect gene function in polarity establishment.
What diseases are linked to defects in bipolar cell polarity?
Cancer and neurodevelopmental disorders are associated with polarity defects.
What methods are used to study establishment of bipolar cell polarity?
Live-cell imaging, CRISPR screening, proteomics, and RNA-seq are commonly used.
Is bipolar cell polarity conserved across species?
Yes, core mechanisms are conserved from yeast to humans, though specific genes may differ.
How does Wnt signaling regulate bipolar polarity?
Wnt signaling establishes microtubule polarity in neurons through regulation of Kinesin-13.
Conclusion
The establishment of bipolar cell polarity involved in cell morphogenesis (GO:0061159) is a fundamental biological process that governs asymmetric cell division, neuronal development, and tissue morphogenesis. Research using model organisms and CRISPR-based tools has identified key genes such as Kinesin-13, tea1, tea2, and tip1, and revealed conserved mechanisms of polarity establishment. Understanding this process has broad implications for developmental biology and disease, and ongoing studies continue to uncover new regulators and therapeutic targets.
References
- 1. Puri D et al.. 2021. Wnt signaling establishes the microtubule polarity in neurons through regulation of Kinesin-13.. J Cell Biol 220(9) PMID: 34137792
- 2. Verde F et al.. 1995. Fission yeast cell morphogenesis: identification of new genes and analysis of their role during the cell cycle.. J Cell Biol 131(6 Pt 1):1529-38 PMID: 8522609
- 3. Smirnova EA et al.. 1998. Early stages of spindle formation and independence of chromosome and microtubule cycles in Haemanthus endosperm.. Cell Motil Cytoskeleton 40(1):22-37 PMID: 9605969
