GO:0060916 mesenchymal cell proliferation involved in lung development: Mesenchymal Expansion Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0060916 describes the multiplication of mesenchymal cells that drives expansion of the mesenchymal population during lung development, a process essential for branching morphogenesis and alveolar septation.
• Mesenchymal cell proliferation in the lung is regulated by signaling pathways including TGF-beta, STAT3, and store-operated calcium entry, which coordinate epithelial-mesenchymal interactions.
• Dysregulation of mesenchymal proliferation contributes to pulmonary fibrosis, lung cancer progression, and other respiratory diseases.
• Key genes involved include TGFB2, STAT3, PTPRB, ADAMTS1, and HOXA10, which modulate mesenchymal cell expansion and differentiation.
• CRISPR-based models (knockout, point mutation, knock-in, overexpression) enable causal dissection of genes controlling mesenchymal proliferation in lung development.
• Understanding GO:0060916 provides insights into developmental lung disorders and offers therapeutic targets for fibrotic and neoplastic lung diseases.
Description
Mesenchymal cell proliferation involved in lung development (GO:0060916) is a biological process defined as the multiplication or reproduction of mesenchymal cells, resulting in the expansion of a mesenchymal cell population that contributes to the progression of the lung over time. Mesenchymal cells are loosely organized, three-dimensional mass-forming cells that give rise to connective tissue, smooth muscle, and other supportive structures, distinct from sheet-forming epithelial cells. This process is fundamental for lung morphogenesis, as it provides the cellular bulk and signaling cues necessary for branching morphogenesis and alveolarization. Researchers study GO:0060916 to understand how mesenchymal expansion is coordinated with epithelial growth and how its dysregulation leads to diseases such as pulmonary fibrosis and lung cancer. The process is tightly regulated by paracrine signals, including TGF-beta family members and inflammatory mediators, which control the balance between proliferation and differentiation. Recent studies have highlighted the role of endothelial-to-mesenchymal transition and store-operated calcium entry in modulating mesenchymal cell numbers in the lung vasculature. Thus, GO:0060916 represents a critical node in lung developmental biology and disease pathogenesis.
mesenchymal cell proliferation involved in lung development At A Glance
| GO ID | GO:0060916 |
|---|---|
| GO term | mesenchymal cell proliferation involved in lung development |
| Ontology | biological_process |
| Synonym | none |
| Major function | Expansion of mesenchymal cell population during lung development |
| Related processes | Epithelial-mesenchymal transition, branching morphogenesis, alveolar septation |
| Key regulators | TGF-beta, STAT3, PTPRB, store-operated calcium entry |
| Associated diseases | Pulmonary fibrosis, lung cancer, developmental lung disorders |
What Is GO:0060916?
GO:0060916, mesenchymal cell proliferation involved in lung development, refers to the multiplication or reproduction of mesenchymal cells that leads to an increase in the mesenchymal cell population specifically during the development of the lung. This process is restricted to the developmental context and excludes mesenchymal proliferation in other organs or pathological states. The term encompasses the cell cycle progression and division of mesenchymal cells, which are characterized by a three-dimensional organization rather than sheet-like structures, and it contributes to the overall growth and maturation of the lung.
Why Is mesenchymal cell proliferation involved in lung development Important in Cell Biology?
Understanding mesenchymal cell proliferation involved in lung development is crucial because it underpins the formation of the lung's structural framework and its dysregulation is a hallmark of several respiratory diseases. During development, mesenchymal expansion provides the necessary cellular mass and signaling molecules for branching morphogenesis and alveolarization. In adults, reactivation of mesenchymal proliferation contributes to pathological remodeling in pulmonary fibrosis and tumor stroma formation in lung cancer. Therefore, elucidating the molecular controls of GO:0060916 can reveal therapeutic targets for fibrotic and neoplastic lung diseases.
• Essential for lung branching morphogenesis and alveolar septation during development.
• Provides mesenchymal-derived signals that pattern the airway epithelium.
• Dysregulated mesenchymal proliferation leads to pulmonary fibrosis.
• Contributes to tumor stroma and cancer progression in non-small cell lung cancer.
• Involved in endothelial-to-mesenchymal transition in pulmonary hypertension.
• Regulated by TGF-beta and STAT3 signaling pathways.
• Target for anti-fibrotic and anti-cancer therapies.
• Requires precise spatial and temporal control for normal lung function.
• Studied using CRISPR models to identify causal genes.
• Links developmental biology to regenerative medicine approaches for lung repair.
What Happens During mesenchymal cell proliferation involved in lung development?
Initiation by Mesenchymal-Inducing Signals
In simple terms: Signals from the surrounding tissue tell mesenchymal cells to start dividing.
Mesenchymal cell proliferation in the lung is initiated by paracrine signals, including TGF-beta family members and inflammatory cytokines, which activate receptors on mesenchymal cells. For example, TGF-beta signaling via SMAD proteins promotes mesenchymal expansion during lung development. Additionally, store-operated calcium entry has been shown to be involved in endothelium-to-mesenchymal transition, a process that can contribute to mesenchymal cell numbers in lung vascular development.
Cell Cycle Entry and Progression
In simple terms: Once signaled, mesenchymal cells enter the cell cycle and divide.
Upon stimulation, mesenchymal cells upregulate cyclins and CDKs, leading to retinoblastoma protein phosphorylation and progression through the G1/S checkpoint. STAT3 signaling has been implicated in promoting proliferation in lung cancer cells, and its suppression inhibits proliferation and migration. Similarly, PTPRB signaling regulates lung fibroblast proliferation, as inhibition of PTPRB reduces fibroblast proliferation in pulmonary fibrosis models.
Epithelial-Mesenchymal Crosstalk
In simple terms: Mesenchymal cells and epithelial cells communicate to coordinate lung growth.
Mesenchymal proliferation is tightly coordinated with epithelial branching through reciprocal signaling. Epithelial-derived factors such as FGFs and SHH regulate mesenchymal proliferation, while mesenchymal cells secrete factors like TGF-beta and Wnt ligands that feedback on the epithelium. Disruption of this crosstalk can lead to abnormal lung development or disease, as seen in epithelial-mesenchymal transition during cancer metastasis.
Resolution and Differentiation
In simple terms: After proliferation, mesenchymal cells stop dividing and mature into specialized cells.
As lung development progresses, mesenchymal proliferation ceases and cells differentiate into smooth muscle cells, fibroblasts, and pericytes. This transition is regulated by factors such as HOXA10, which mediates epithelial-mesenchymal transition and can influence mesenchymal cell fate. Dysregulation of this resolution phase can result in excessive mesenchymal accumulation, as observed in pulmonary fibrosis.
Key Genes Involved in GO:0060916 mesenchymal cell proliferation involved in lung development
The following genes have been experimentally implicated in mesenchymal cell proliferation involved in lung development or related processes, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| TGFB2 | Promotes epithelial-mesenchymal transition and mesenchymal proliferation | Studied in gastric cancer metastasis and lung fibrosis |
| STAT3 | Transcription factor driving proliferation and survival | Target in gefitinib-resistant NSCLC; suppression inhibits proliferation |
| PTPRB | Regulates fibroblast proliferation via signaling | Inhibits endothelial-to-mesenchymal transition and lung fibroblast proliferation |
| ADAMTS1 | Induces epithelial-mesenchymal transition via TGF-beta | Implicated in NSCLC progression |
| HOXA10 | Mediates epithelial-mesenchymal transition | Promotes gastric cancer metastasis via TGFB2/Smad/METTL3 |
| TGFB1 | Master regulator of fibrosis and mesenchymal activation | Central to pulmonary fibrosis pathogenesis |
| SMAD2/3 | Transduce TGF-beta signals | Downstream effectors of TGF-beta in mesenchymal cells |
| METTL3 | RNA methyltransferase modulating TGF-beta signaling | Involved in HOXA10-mediated EMT |
| CDK4/6 | Cell cycle kinases promoting G1/S transition | Potential targets to inhibit mesenchymal proliferation |
| CCND1 | Cyclin D1, regulates cell cycle progression | Marker of proliferating mesenchymal cells |
| MYC | Oncogene driving proliferation | Often upregulated in lung cancer stroma |
| FGFR1 | Receptor for FGF signals | Mediates mesenchymal-epithelial crosstalk in lung |
| SHH | Sonic hedgehog ligand | Regulates mesenchymal proliferation during branching |
| WNT5A | Non-canonical Wnt ligand | Modulates mesenchymal cell polarity and proliferation |
| BMP4 | Bone morphogenetic protein | Controls mesenchymal differentiation and proliferation |
| VEGFA | Angiogenic factor | Influences mesenchymal cell behavior in lung vasculature |
| EDN1 | Endothelin-1 | Vasoactive peptide affecting mesenchymal proliferation |
How Is mesenchymal cell proliferation involved in lung development Regulated?
Mesenchymal cell proliferation involved in lung development is regulated by a complex network of signaling pathways. TGF-beta signaling, through SMAD2/3 and co-factors such as METTL3, promotes mesenchymal proliferation and epithelial-mesenchymal transition. STAT3 activation downstream of cytokine receptors drives proliferative gene expression, and its inhibition reduces proliferation in lung cancer cells. Store-operated calcium entry modulates endothelium-to-mesenchymal transition, affecting mesenchymal cell numbers. Additionally, PTPRB signaling negatively regulates fibroblast proliferation, and its inhibition attenuates pulmonary fibrosis. These pathways are integrated with developmental cues such as FGF, SHH, and BMP signaling to ensure proper lung morphogenesis.
mesenchymal cell proliferation involved in lung development and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| PTPRB | Pulmonary fibrosis | Knockout or overexpression in lung fibroblasts |
| STAT3 | Gefitinib-resistant NSCLC | Point mutation or knockout in NSCLC cell lines |
| ADAMTS1 | Non-small cell lung cancer | Overexpression or knockout in A549 cells |
| TGFB2 | Gastric cancer metastasis | Knock-in of TGFB2 mutations in gastric cancer cells |
| HOXA10 | Gastric cancer metastasis | Knockout in gastric cancer cell lines |
Pulmonary Fibrosis
Pulmonary fibrosis is characterized by excessive mesenchymal cell proliferation and extracellular matrix deposition, leading to scarring and loss of lung function. Forsythoside A has been shown to regulate pulmonary fibrosis by inhibiting endothelial-to-mesenchymal transition and lung fibroblast proliferation via PTPRB signaling. Thus, targeting mesenchymal proliferation is a therapeutic strategy for fibrosis.
Lung Cancer
In non-small cell lung cancer (NSCLC), mesenchymal proliferation contributes to tumor stroma and cancer progression. ADAMTS1 induces epithelial-mesenchymal transition via TGF-beta, promoting NSCLC malignancy. STAT3 suppression inhibits proliferation and migration in gefitinib-resistant NSCLC cells. Therefore, understanding GO:0060916 mechanisms can inform cancer therapy.
Pulmonary Hypertension
Endothelial-to-mesenchymal transition in lung vascular endothelial cells contributes to vascular remodeling in pulmonary hypertension. Store-operated Ca2+ entry is involved in this transition, suggesting that calcium signaling modulates mesenchymal cell expansion in the vasculature.
From mesenchymal cell proliferation involved in lung development-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X regulate mesenchymal proliferation in lung development? | Knockout mouse or lung mesenchymal cell line with CRISPR KO |
| Does a specific point mutation in gene Y alter mesenchymal proliferation? | Point mutation knock-in via CRISPR in lung fibroblasts |
| Does overexpression of gene Z drive mesenchymal expansion? | CRISPRa overexpression in primary lung mesenchymal cells |
| How does gene W affect epithelial-mesenchymal crosstalk? | Co-culture of epithelial and mesenchymal cells with tagged knock-in |
| What is the role of gene V in pulmonary fibrosis? | Conditional knockout in adult lung fibroblasts |
| Can CRISPR library screening identify novel regulators of GO:0060916? | Genome-wide CRISPR screen in lung mesenchymal cells |
How to Study the mesenchymal cell proliferation involved in lung development Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Global gene expression changes | Identify pathways regulating mesenchymal proliferation |
| EdU/Ki-67 staining | DNA synthesis and cell cycle entry | Quantify proliferation in lung tissue |
| Western blot | Protein expression and phosphorylation | Assess TGF-beta/SMAD and STAT3 signaling |
| Immunofluorescence | Spatial localization of markers | Visualize mesenchymal cells in lung sections |
| CRISPR screen | Gene function on a genome-wide scale | Discover novel regulators of proliferation |
| Co-culture assays | Epithelial-mesenchymal interactions | Study paracrine signaling |
| Calcium imaging | Store-operated calcium entry | Measure Ca2+ dynamics in mesenchymal transition |
| Flow cytometry | Cell surface marker expression | Isolate and quantify mesenchymal populations |
Transcriptomic Profiling
RNA sequencing (RNA-seq) of lung mesenchymal cells at different developmental stages can identify genes and pathways differentially expressed during proliferation. This approach has been used to uncover TGF-beta and STAT3 target genes in lung cancer and fibrosis models.
Proliferation Assays
EdU incorporation, Ki-67 staining, and MTT assays measure mesenchymal cell proliferation in vitro and in vivo. These assays have been applied to evaluate the effects of PTPRB inhibition on lung fibroblast proliferation and STAT3 suppression on NSCLC cells.
Lineage Tracing and Imaging
Genetic lineage tracing using Cre-lox systems in mice allows visualization of mesenchymal cell expansion during lung development. Immunofluorescence for mesenchymal markers (e.g., vimentin, alpha-SMA) combined with proliferation markers provides spatial context.
CRISPR Screening
Genome-wide CRISPR knockout or activation screens in lung mesenchymal cells can identify novel regulators of proliferation. This unbiased approach has been instrumental in discovering genes like ADAMTS1 and HOXA10 in cancer contexts.
How CRISPR Can Be Used to Study GO:0060916 mesenchymal cell proliferation involved in lung development
Knockout
CRISPR knockout of candidate genes such as PTPRB or STAT3 in lung mesenchymal cells or mouse models can determine their necessity for mesenchymal proliferation. For example, PTPRB knockout may enhance fibroblast proliferation, while STAT3 knockout reduces it.
Point Mutation
Introducing specific point mutations (e.g., in TGFB2 or SMAD3) via CRISPR base editing or HDR can model human disease variants and assess their impact on mesenchymal proliferation. This approach helps distinguish driver mutations from passenger changes.
Knock-in
Knock-in of reporter genes (e.g., GFP) or epitope tags into endogenous loci allows real-time tracking of mesenchymal cells and their proliferation. Tagged knock-in of ADAMTS1 can reveal its secretion dynamics in NSCLC.
Overexpression
CRISPR activation (CRISPRa) or lentiviral overexpression of genes like HOXA10 or TGFB2 can drive mesenchymal proliferation and EMT, providing gain-of-function models to study GO:0060916.
How EDITGENE Supports mesenchymal cell proliferation involved in lung development Research
Researchers studying mesenchymal cell proliferation involved in lung development-related genes often need to determine whether a candidate gene is causally involved in the expansion of mesenchymal populations or is merely a bystander. EDITGENE provides comprehensive CRISPR-based services to establish causality through precise genome editing in lung mesenchymal cells and animal models.
Contact EDITGENE today to design your custom CRISPR model for mesenchymal cell proliferation involved in lung development research.
Frequently Asked Questions About mesenchymal cell proliferation involved in lung development
What is GO:0060916?
GO:0060916 is the Gene Ontology term for mesenchymal cell proliferation involved in lung development, describing the multiplication of mesenchymal cells that expands their population during lung formation.
What genes are involved in mesenchymal cell proliferation involved in lung development?
Key genes include TGFB2, STAT3, PTPRB, ADAMTS1, and HOXA10, which regulate mesenchymal proliferation through TGF-beta, STAT3, and other signaling pathways.
How is mesenchymal cell proliferation regulated in the lung?
It is regulated by paracrine signals such as TGF-beta, STAT3 activation, store-operated calcium entry, and PTPRB signaling, which coordinate proliferation with epithelial branching.
What diseases are associated with abnormal mesenchymal cell proliferation in the lung?
Pulmonary fibrosis, lung cancer, and pulmonary hypertension are associated with dysregulated mesenchymal proliferation.
What methods are used to study GO:0060916?
Methods include RNA-seq, EdU/Ki-67 proliferation assays, immunofluorescence, CRISPR screens, and co-culture assays.
Can CRISPR be used to study mesenchymal cell proliferation in lung development?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models enable causal studies of genes regulating mesenchymal proliferation.
What is the role of TGF-beta in mesenchymal cell proliferation?
TGF-beta signaling promotes mesenchymal proliferation and epithelial-mesenchymal transition via SMAD proteins, contributing to lung development and fibrosis.
How does STAT3 affect lung mesenchymal cells?
STAT3 activation drives proliferation and survival; its suppression inhibits proliferation in lung cancer cells and may reduce mesenchymal expansion.
What is the significance of PTPRB in lung fibrosis?
PTPRB signaling inhibits endothelial-to-mesenchymal transition and lung fibroblast proliferation; its modulation affects fibrosis progression.
How can I model GO:0060916 in the lab?
You can use CRISPR knockout or overexpression in lung mesenchymal cell lines, primary cells, or mouse models, combined with proliferation assays and RNA-seq.
Conclusion
GO:0060916, mesenchymal cell proliferation involved in lung development, is a fundamental biological process that drives lung morphogenesis and is dysregulated in fibrosis and cancer. Understanding its molecular regulation through TGF-beta, STAT3, and calcium signaling pathways offers opportunities for therapeutic intervention. CRISPR-based models are indispensable for dissecting gene function in this context, and EDITGENE provides comprehensive services to support such research.
References
- 4. Zhang Q et al.. 2024. Forsythoside A regulates pulmonary fibrosis by inhibiting endothelial-to-mesenchymal transition and lung fibroblast proliferation via the PTPRB signaling.. Phytomedicine 130:155715 PMID: 38788399
- 5. Babicheva A et al.. 2025. Store-operated Ca(2+) entry is involved in endothelium-to-mesenchymal transition in lung vascular endothelial cells.. Am J Physiol Lung Cell Mol Physiol 328(6):L844-L857 PMID: 40331589
- 6. Song C et al.. 2021. HOXA10 mediates epithelial-mesenchymal transition to promote gastric cancer metastasis partly via modulation of TGFB2/Smad/METTL3 signaling axis.. J Exp Clin Cancer Res 40(1):62 PMID: 33563300
- 7. Jang SC et al.. 2026. Buddlejasaponin IV inhibits proliferation and migration via STAT3 suppression in gefitinib-resistant non-small cell lung cancer cells.. BMC Complement Med Ther 26(1) PMID: 41673646
- 8. Hu X et al.. 2023. ADAMTS1 induces epithelial-mesenchymal transition pathway in non-small cell lung cancer by regulating TGF-β.. Aging (Albany NY) 15(6):2097-2114 PMID: 36947712
