GO:0060809 mesodermal to mesenchymal transition involved in gastrulation: Embryonic EMT Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0060809 describes the epithelial-to-mesenchymal transition (EMT) by which mesodermal cells lose apical/basolateral polarity, dissolve intercellular junctions, degrade basement membrane and become migratory mesenchymal cells during gastrulation.
• This process is a developmental EMT, distinct from pathological EMT in cancer, and is conserved across vertebrates and invertebrates [2, 7, 8].
• Key molecular events include loss of E-cadherin-based adhesion, cytoskeletal reorganization, and activation of transcription factors such as Snail, Twist and Zeb [2, 7].
• Gastrulation movements in chick, Drosophila, and mammalian embryos provide tractable models to study GO:0060809 [1, 3, 4, 5].
• Non-coding RNAs, including microRNAs and lncRNAs, modulate the EMT program during gastrulation.
• Dysregulation of developmental EMT programs is linked to cancer progression and metastasis, making GO:0060809 relevant to human disease [7, 8].
Description
Gastrulation is the embryonic process that establishes the three germ layers, and the mesodermal to mesenchymal transition involved in gastrulation (GO:0060809) is a specialized epithelial-to-mesenchymal transition (EMT) that enables mesodermal cells to ingress and migrate. During this transition, mesodermal cells lose apical/basolateral polarity, sever intercellular adhesive junctions, degrade basement membrane components, and become migratory mesenchymal cells. This process is a cornerstone of developmental morphogenesis and is conserved across metazoans, from Drosophila to chick and mammals [1, 3, 4, 5]. Researchers study GO:0060809 to understand how cell fate and tissue architecture are coordinated during embryogenesis, and because the molecular machinery of developmental EMT is frequently reactivated in cancer and fibrosis [7, 8]. The term is defined in QuickGO as the EMT process in which a mesodermal cell loses apical/basolateral polarity, severs intercellular adhesive junctions, degrades basement membrane components and becomes a migratory mesenchymal cell as part of gastrulation. This article synthesizes authoritative QuickGO annotation and verified PubMed literature to provide a research-grade overview of GO:0060809, its mechanisms, key genes, disease relevance, and experimental models.
mesodermal to mesenchymal transition involved in gastrulation At A Glance
| GO ID | GO:0060809 |
|---|---|
| GO term | mesodermal to mesenchymal transition involved in gastrulation |
| Ontology | biological_process |
| Synonym | none |
| Major function | Conversion of mesodermal epithelial cells into migratory mesenchymal cells during gastrulation |
| Definition source | QuickGO |
| Related process | Epithelial to mesenchymal transition (EMT) during gastrulation |
| Organisms studied | Chick, Drosophila, Rhesus monkey, mouse, zebrafish, human embryonic stem cell models |
| Key cellular changes | Loss of polarity, junction disassembly, basement membrane degradation, cytoskeletal remodeling |
What Is GO:0060809?
GO:0060809, mesodermal to mesenchymal transition involved in gastrulation, is a biological process that describes the conversion of polarized, adherent mesodermal epithelial cells into motile mesenchymal cells during gastrulation. According to the QuickGO definition, this transition involves loss of apical/basolateral polarity, severing of intercellular adhesive junctions, degradation of basement membrane components, and acquisition of a migratory mesenchymal phenotype as part of gastrulation. It is a developmental EMT subtype, distinct from EMT in cancer or fibrosis, and is essential for mesoderm internalization and subsequent morphogenetic movements [2, 7].
Why Is mesodermal to mesenchymal transition involved in gastrulation Important in Cell Biology?
GO:0060809 is important because it governs the earliest morphogenetic movements that shape the mesoderm, a germ layer giving rise to muscle, bone, blood, and connective tissues. Understanding this process illuminates fundamental principles of cell plasticity, adhesion, and migration, and provides a developmental template for studying pathological EMT in cancer and fibrosis [2, 7, 8]. Because the core EMT program is conserved, insights from gastrulation models inform cancer biology and regenerative medicine [7, 8].
• Defines a critical step in gastrulation, without which mesoderm formation and subsequent organogenesis fail.
• Provides a developmental model for understanding EMT mechanisms conserved in cancer metastasis.
• Involves dynamic regulation of cell adhesion molecules such as E-cadherin and N-cadherin [2, 7].
• Requires basement membrane remodeling, linking to extracellular matrix biology.
• Is modulated by non-coding RNAs, expanding the regulatory landscape of EMT.
• Studied across diverse model organisms, enabling comparative and evolutionary analyses [1, 3, 4, 5].
• Relevant to human embryonic stem cell models of gastrulation and early development.
• Dysregulation of EMT programs is implicated in cancer, fibrosis, and developmental disorders [7, 8].
• Offers targets for CRISPR-based functional genomics in developmental biology [2, 7].
• Informs tissue engineering and regenerative strategies requiring controlled cell-state transitions.
What Happens During mesodermal to mesenchymal transition involved in gastrulation?
Initiation and loss of epithelial polarity
In simple terms: Mesodermal cells first stop acting like tightly packed bricks and begin to loosen up.
The transition begins with the loss of apical/basolateral polarity in mesodermal epithelial cells, a hallmark of EMT during gastrulation. This step is accompanied by changes in cortical actin and junctional complexes, priming cells for ingression [2, 7]. In chick and Drosophila gastrulation, polarity loss is tightly coupled to morphogenetic movements [1, 3].
Disassembly of intercellular junctions
In simple terms: The glue that holds cells together is removed so they can move apart.
Mesodermal cells sever intercellular adhesive junctions, including adherens junctions and tight junctions, as part of GO:0060809. Downregulation of E-cadherin and remodeling of catenins are central to this step [2, 7]. This junctional disassembly is a conserved feature of developmental EMT across species [2, 8].
Basement membrane degradation
In simple terms: Cells digest the supportive matrix around them to create a path for migration.
Degradation of basement membrane components is a defining event in GO:0060809, allowing mesodermal cells to breach epithelial barriers. Matrix metalloproteinases and other proteases contribute to this remodeling. This step is critical for mesoderm internalization during gastrulation [1, 5].
Acquisition of migratory mesenchymal phenotype
In simple terms: Cells become free-moving and take on a migratory shape.
Following junction disassembly and matrix degradation, mesodermal cells acquire a migratory mesenchymal phenotype with front-rear polarity and actin-rich protrusions [2, 7]. This phenotype enables directed migration along extracellular matrix cues during gastrulation [1, 5]. The transition is accompanied by changes in gene expression programs driven by EMT transcription factors [2, 7].
Transcriptional and post-transcriptional regulation
In simple terms: Master switches inside the cell turn genes on and off to drive the transition.
EMT transcription factors such as Snail, Twist, and Zeb repress epithelial genes and activate mesenchymal programs during GO:0060809 [2, 7]. Non-coding RNAs, including microRNAs and lncRNAs, fine-tune these transcriptional outputs. This layered regulation ensures precise spatial and temporal control of gastrulation EMT [2, 6].
Key Genes Involved in GO:0060809 mesodermal to mesenchymal transition involved in gastrulation
The following genes and proteins are central to the mesodermal to mesenchymal transition involved in gastrulation, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| CDH1 | Epithelial cadherin; loss promotes junction disassembly | Marker of epithelial state; target for EMT studies [2, 7] |
| CDH2 | N-cadherin; mesenchymal adhesion | Marker of mesenchymal phenotype [2, 7] |
| SNAI1 | Transcriptional repressor of E-cadherin | Master EMT regulator [2, 7] |
| SNAI2 | EMT transcription factor | Modulates cell migration [2, 7] |
| TWIST1 | Promotes mesenchymal phenotype | Key EMT inducer [2, 7] |
| ZEB1 | Represses epithelial genes | EMT regulator [2, 7] |
| ZEB2 | Represses E-cadherin | EMT regulator [2, 7] |
| FN1 | Extracellular matrix component | Supports migration [2, 7] |
| MMP2 | Matrix metalloproteinase; degrades basement membrane | Basement membrane remodeling |
| MMP9 | Matrix metalloproteinase | ECM degradation |
| TGFB1 | Induces EMT signaling | Upstream regulator [2, 7] |
| BMP4 | Mesoderm patterning and EMT | Gastrulation signaling [1, 3] |
| WNT3A | Activates EMT programs | Gastrulation signaling [1, 3] |
| FGF8 | Mesoderm migration | Gastrulation morphogenesis [1, 5] |
| VIM | Mesenchymal intermediate filament | Mesenchymal marker [2, 7] |
| CTNNB1 | Adherens junction and Wnt signaling | Links adhesion and transcription [2, 7] |
| RHOA | Cytoskeletal dynamics | Migration and polarity [2, 7] |
How Is mesodermal to mesenchymal transition involved in gastrulation Regulated?
GO:0060809 is regulated by a combination of extracellular signals and intracellular transcriptional networks. TGF-beta, BMP, Wnt, and FGF pathways converge to activate EMT transcription factors such as Snail, Twist, and Zeb, which repress epithelial genes and induce mesenchymal programs [2, 7]. Non-coding RNAs, including microRNAs and long non-coding RNAs, provide additional post-transcriptional control of EMT during gastrulation. Spatiotemporal regulation ensures that mesodermal cells undergo EMT only at appropriate locations and times during gastrulation [1, 5].
mesodermal to mesenchymal transition involved in gastrulation and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| CDH1 | Cancer invasion and metastasis | Knockout in cancer cell lines |
| SNAI1 | EMT-driven metastasis | Overexpression in epithelial cells |
| TWIST1 | Cancer progression | Point mutation knock-in |
| ZEB1 | Tumor invasion | Knockout in organoids |
| MMP2 | Fibrosis and ECM remodeling | Knockout in fibroblast models |
Cancer metastasis and EMT reactivation
The developmental EMT program of GO:0060809 is frequently reactivated in cancer, where it promotes invasion and metastasis. Genes such as SNAI1, TWIST1, and ZEB1, which drive gastrulation EMT, are often upregulated in carcinomas. Understanding the developmental regulation of these genes provides insights into therapeutic targeting of metastatic disease [7, 8].
Fibrosis and tissue remodeling
EMT contributes to fibrosis in organs such as lung, liver, and kidney, sharing molecular features with developmental EMT. The basement membrane degradation and junction disassembly seen in GO:0060809 parallel pathological tissue remodeling [2, 7]. Studying gastrulation EMT may reveal conserved targets for anti-fibrotic strategies.
Developmental disorders and gastrulation defects
Disruption of gastrulation EMT can lead to severe developmental defects, including mesoderm malformation [2, 5]. Mutations in EMT-related genes have been associated with congenital anomalies in model organisms [2, 7]. Comparative studies across species help identify conserved requirements for normal development [1, 3, 4, 5].
From mesodermal to mesenchymal transition involved in gastrulation-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X drive mesodermal EMT? | Knockout in embryonic stem cells |
| Does a point mutation affect EMT? | Point mutation knock-in in zebrafish [1, 5] |
| Does overexpression induce mesenchymal phenotype? | Overexpression in chick embryos |
| Where is protein X localized during EMT? | Tagged knock-in in Drosophila |
| What is the transcriptional response during EMT? | RNA-seq in gastrulating embryos [2, 6] |
| Which non-coding RNAs regulate EMT? | Knockout of microRNA in mouse models |
How to Study the mesodermal to mesenchymal transition involved in gastrulation Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Transcriptome changes | Identify EMT gene signatures [2, 6] |
| Live imaging | Cell behavior and morphology | Track EMT in embryos [1, 3] |
| Proteomics | Protein abundance and modifications | Quantify adhesion proteins [2, 7] |
| CRISPR knockout | Gene function | Test requirement for EMT [2, 7] |
| Overexpression | Gain-of-function | Induce mesenchymal phenotype [2, 7] |
| In situ hybridization | Spatial gene expression | Localize EMT markers [1, 5] |
| Immunofluorescence | Protein localization | Visualize junction disassembly [2, 7] |
| ATAC-seq | Chromatin accessibility | Identify regulatory elements |
Transcriptomic profiling
RNA-seq of gastrulating embryos or differentiating stem cells can identify gene expression changes associated with GO:0060809 [2, 6]. Comparative transcriptomics across species reveals conserved EMT signatures [1, 3, 5].
Imaging and live-cell analysis
Live imaging of gastrulating embryos, such as chick or Drosophila, allows visualization of cell polarity loss, junction disassembly, and migration [1, 3]. Fluorescent reporters for E-cadherin and actin enable dynamic tracking of EMT.
Proteomics and interactomics
Mass spectrometry-based proteomics can quantify changes in adhesion and cytoskeletal proteins during EMT [2, 7]. Interaction studies identify complexes regulating junction disassembly.
Functional perturbation
CRISPR knockout, knockdown, or overexpression of candidate genes in model organisms tests their requirement for GO:0060809 [2, 7]. Rescue experiments confirm specificity.
How CRISPR Can Be Used to Study GO:0060809 mesodermal to mesenchymal transition involved in gastrulation
Knockout
CRISPR knockout of EMT-related genes such as CDH1 or SNAI1 in embryonic stem cells or model organisms can test their requirement for GO:0060809 [2, 7]. Loss-of-function phenotypes reveal essential roles in gastrulation.
Point Mutation
Point mutation knock-in can model specific amino acid changes in EMT regulators to dissect domain functions [2, 7]. This approach is useful for studying phosphorylation sites or DNA-binding residues.
Knock-in
Tagged knock-in of genes like CDH2 or VIM allows live tracking of protein dynamics during EMT [2, 7]. Reporter knock-ins can monitor transcriptional activation of EMT programs.
Overexpression
Overexpression of transcription factors such as TWIST1 or SNAI1 can induce EMT in epithelial cells, modeling GO:0060809 [2, 7]. This is useful for gain-of-function studies and drug screening.
How EDITGENE Supports mesodermal to mesenchymal transition involved in gastrulation Research
Researchers studying mesodermal to mesenchymal transition involved in gastrulation-related genes often need to determine whether a candidate gene is causally involved in EMT, how specific mutations affect protein function, or where the protein localizes during gastrulation. EDITGENE provides CRISPR-based cell models and screening services to address these questions with precision and reproducibility.
Contact EDITGENE today to design your custom CRISPR model for mesodermal to mesenchymal transition involved in gastrulation research.
Frequently Asked Questions About mesodermal to mesenchymal transition involved in gastrulation
What is GO:0060809?
GO:0060809 is the Gene Ontology term for mesodermal to mesenchymal transition involved in gastrulation, a developmental EMT process where mesodermal cells lose polarity, disassemble junctions, degrade basement membrane, and become migratory.
What genes are involved in mesodermal to mesenchymal transition involved in gastrulation?
Key genes include CDH1, CDH2, SNAI1, SNAI2, TWIST1, ZEB1, ZEB2, FN1, MMP2, MMP9, TGFB1, BMP4, WNT3A, FGF8, VIM, CTNNB1, and RHOA [2, 7].
Why is GO:0060809 important?
It is essential for gastrulation and mesoderm formation, and its mechanisms are conserved in cancer EMT, making it relevant to development and disease [2, 7, 8].
How is mesodermal to mesenchymal transition involved in gastrulation regulated?
It is regulated by TGF-beta, BMP, Wnt, and FGF signaling, EMT transcription factors, and non-coding RNAs [2, 6, 7].
What model organisms are used to study GO:0060809?
Chick, Drosophila, Rhesus monkey embryonic stem cells, mouse, and zebrafish are commonly used [1, 3, 4, 5].
What are the hallmarks of GO:0060809?
Loss of apical/basolateral polarity, junction disassembly, basement membrane degradation, and acquisition of migratory phenotype.
How does developmental EMT differ from cancer EMT?
Developmental EMT is tightly regulated and transient, while cancer EMT is dysregulated and promotes metastasis, though they share molecular programs [7, 8].
What methods study mesodermal to mesenchymal transition involved in gastrulation?
RNA-seq, live imaging, proteomics, CRISPR perturbation, and in situ hybridization are commonly used [1, 2, 6, 7].
Can CRISPR be used to study GO:0060809?
Yes, CRISPR knockout, knock-in, point mutation, and overexpression models are powerful tools to dissect gene function in gastrulation EMT [2, 7].
What diseases are linked to GO:0060809?
Cancer metastasis, fibrosis, and developmental disorders are linked to dysregulation of EMT programs [7, 8].
Conclusion
GO:0060809, mesodermal to mesenchymal transition involved in gastrulation, is a fundamental developmental EMT process that drives mesoderm formation and morphogenesis. Its molecular machinery, including adhesion molecules, transcription factors, and non-coding RNAs, is conserved and relevant to cancer and fibrosis. Studying this process with CRISPR models and multi-omics approaches continues to reveal new insights into cell plasticity and disease.
References
- 1. Voiculescu O. 2020. Movements of chick gastrulation.. Curr Top Dev Biol 136:409-428 PMID: 31959297
- 2. Nakaya Y et al.. 2008. Epithelial to mesenchymal transition during gastrulation: an embryological view.. Dev Growth Differ 50(9):755-66 PMID: 19046163
- 3. Stathopoulos A et al.. 2020. Setting up for gastrulation: D. melanogaster.. Curr Top Dev Biol 136:3-32 PMID: 31959292
- 4. Denker HW et al.. 2007. Epithelial-mesenchymal transition in Rhesus monkey embryonic stem cell colonies: a model for processes involved in gastrulation?. Cells Tissues Organs 185(1-3):48-50 PMID: 17587807
- 5. Sheng G. 2015. Epiblast morphogenesis before gastrulation.. Dev Biol 401(1):17-24 PMID: 25446532
- 6. Expósito-Villén A et al.. 2018. Functional Role of Non-Coding RNAs during Epithelial-To-Mesenchymal Transition.. Noncoding RNA 4(2) PMID: 29843425
- 7. Nakaya Y et al.. 2013. EMT in developmental morphogenesis.. Cancer Lett 341(1):9-15 PMID: 23462225
- 8. McClay DR. 2021. Perspective on Epithelial-Mesenchymal Transitions in Embryos.. Methods Mol Biol 2179:7-12 PMID: 32939708
