GO:1905686 positive regulation of plasma membrane repair: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1905686 describes any process that activates or increases the frequency, rate or extent of plasma membrane repair, a rapid cellular response to mechanical or chemical membrane damage.
• Positive regulation of plasma membrane repair is essential for cell survival after injury and is coordinated by calcium influx, ESCRT machinery, and cytoskeletal remodeling.
• Key genes include DNM1L (DRP1), FIS1, UFL1, PARP1, PTK2 (FAK), and TGFBR1, which modulate membrane repair through mitochondrial dynamics, ubiquitination, and focal adhesion signaling.
• Dysregulated plasma membrane repair contributes to cancer progression, fibrosis, and inflammatory diseases such as ulcerative colitis.
• CRISPR knockout, point mutation, knock-in, and overexpression models are powerful tools to dissect the causal roles of specific genes in this process.
• Understanding positive regulation of plasma membrane repair offers therapeutic opportunities for enhancing tissue regeneration and limiting pathological cell survival.
Description
The plasma membrane is a dynamic barrier that protects the cell from its environment. When mechanical stress, pore-forming toxins, or immune attack compromise this barrier, cells activate a rapid repair response to reseal the membrane and prevent death. The Gene Ontology term GO:1905686, positive regulation of plasma membrane repair, captures any process that activates or increases the frequency, rate or extent of this repair. This term is critical for researchers studying cell survival, tissue homeostasis, and disease mechanisms because failure to repair the plasma membrane leads to necrosis, inflammation, and organ dysfunction. Recent studies have identified diverse molecular players that positively regulate membrane repair, including mitochondrial fission proteins, ubiquitin ligases, and focal adhesion kinases. Understanding these regulators provides insight into basic cell biology and reveals targets for therapeutic intervention in cancer, fibrosis, and inflammatory diseases.
positive regulation of plasma membrane repair At A Glance
| GO ID | GO:1905686 |
|---|---|
| GO term | positive regulation of plasma membrane repair |
| Ontology | biological_process |
| Synonym | activation of plasma membrane repair, up regulation of plasma membrane repair, up-regulation of plasma membrane repair, upregulation of plasma membrane repair |
| Major function | Enhances the frequency, rate or extent of plasma membrane repair, promoting cell survival after membrane injury |
| Related processes | Membrane repair, ESCRT-mediated repair, calcium-dependent exocytosis, cytoskeletal remodeling |
| Cellular context | Occurs in eukaryotic cells, particularly in mechanically stressed tissues such as muscle, endothelium, and epithelium |
| Disease relevance | Cancer, fibrosis, inflammatory bowel disease, neurodegeneration, and tissue injury |
What Is GO:1905686?
GO:1905686 is a biological process term defined as any process that activates or increases the frequency, rate or extent of plasma membrane repair. In other words, it encompasses the signaling events and molecular mechanisms that enhance the cell's ability to reseal a damaged plasma membrane, beyond the basal repair machinery itself.
Why Is positive regulation of plasma membrane repair Important in Cell Biology?
Positive regulation of plasma membrane repair is vital because the plasma membrane is the cell's first line of defense against environmental insults. Without efficient repair, even minor damage can lead to cell death, triggering inflammation and tissue degeneration. This process is particularly important in tissues subjected to mechanical stress, such as skeletal muscle, endothelium, and intestinal epithelium. Moreover, cancer cells often exploit enhanced membrane repair to survive immune attack and therapy-induced damage. Therefore, understanding the positive regulators of plasma membrane repair can reveal new therapeutic targets for a wide range of diseases.
• Prevents cell death and necrosis after mechanical injury, preserving tissue integrity.
• Supports muscle and endothelial cell survival under mechanical stress.
• Limits inflammation by preventing release of damage-associated molecular patterns.
• Enhances cancer cell survival against immune-mediated membrane attack.
• Promotes mucosal healing in inflammatory bowel disease.
• Regulates fibrosis by controlling TGF-β receptor recycling.
• Influences mitochondrial dynamics and energy supply for repair.
• Modulates immune responses by affecting antigen presentation and cell death.
• Provides targets for therapies aimed at tissue regeneration.
• Serves as a biomarker for cellular stress and disease progression.
What Happens During positive regulation of plasma membrane repair?
Calcium influx and damage sensing
In simple terms: When the membrane is torn, calcium rushes into the cell, acting as an alarm signal.
Plasma membrane injury causes a rapid influx of extracellular calcium, which serves as the primary trigger for repair. Calcium binds to synaptotagmins and other calcium-sensing proteins, recruiting repair machinery to the damage site. This calcium signal also activates calpains and other proteases that remodel the cytoskeleton to facilitate vesicle fusion.
ESCRT-mediated membrane sealing
In simple terms: The ESCRT machinery acts like a molecular patch that pinches off the damaged membrane.
The endosomal sorting complex required for transport (ESCRT) is recruited to the injury site, where it mediates membrane scission and sealing. This process is positively regulated by calcium-dependent interactions and by proteins such as ALIX and TSG101. ESCRT-mediated repair is essential for cell survival after small membrane wounds.
Cytoskeletal remodeling and vesicle trafficking
In simple terms: The cell's skeleton rearranges to bring repair vesicles to the wound.
Actin and microtubule networks undergo rapid remodeling to deliver intracellular vesicles to the damage site. Positive regulators such as focal adhesion kinase (PTK2/FAK) promote focal adhesion assembly and cell migration, which are critical for efficient repair. Mitochondrial fission proteins like DNM1L (DRP1) and FIS1 also support the energy demands of cytoskeletal reorganization.
Ubiquitination and post-translational control
In simple terms: Tagging proteins with ubiquitin helps coordinate the repair process.
Ubiquitination events positively regulate membrane repair by targeting damaged proteins for degradation and by modulating signaling. The UFL1-PARP1 axis has been shown to amplify anti-tumor immunity, partly through regulation of membrane repair and cell survival. This axis represents a key positive regulatory node.
Mitochondrial dynamics and energy supply
In simple terms: Mitochondria provide the energy needed for repair and can change shape to help.
Mitochondrial fission, mediated by DNM1L/DRP1 and FIS1, is required for efficient plasma membrane repair in high-grade glioma cells. Targeting this axis inhibits tumor progression, indicating that mitochondrial remodeling positively regulates repair. This highlights the integration of metabolic and repair pathways.
Key Genes Involved in GO:1905686 positive regulation of plasma membrane repair
The following genes and proteins have been experimentally implicated in positive regulation of plasma membrane repair, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| DNM1L (DRP1) | Mitochondrial fission, energy supply for repair | Target in high-grade glioma; regulates membrane repair under stress |
| FIS1 | Mitochondrial fission adaptor | Part of DNM1L/DRP1-FIS1 axis; promotes repair in cancer |
| UFL1 | Ubiquitin ligase, regulates PARP1 | Amplifies anti-tumor immunity; modulates membrane repair |
| PARP1 | DNA repair, NAD+ consumption | Downstream of UFL1; affects cell survival and repair |
| PTK2 (FAK) | Focal adhesion kinase, cytoskeletal remodeling | Promotes mucosal healing and epithelial repair |
| TGFBR1 | TGF-β receptor, recycling | Regulated by Nestin; influences fibrosis and repair |
| Nestin | Intermediate filament protein | Facilitates TGFBR1 recycling; promotes pulmonary fibrosis |
| TREM2 | Macrophage receptor | CAR-TREM2 macrophages regulate fibrotic microenvironment and repair |
| TREX1 | DNA exonuclease | Regulates radiotherapy-induced immunogenicity; linked to membrane repair |
| ALIX | ESCRT accessory protein | Recruits ESCRT to damage sites; positive regulator of repair |
| TSG101 | ESCRT-I component | Essential for membrane scission during repair |
| Synaptotagmin VII | Calcium sensor | Triggers vesicle fusion at injury site |
| Calpain-1 | Calcium-dependent protease | Remodels cytoskeleton for repair |
| Annexin A1 | Membrane repair protein | Accumulates at damage site; promotes resealing |
| MG53 (TRIM72) | Muscle-specific repair protein | Facilitates membrane repair in muscle and heart |
| Dysferlin | Muscle membrane repair | Mutations cause muscular dystrophy; key repair gene |
| Caveolin-3 | Muscle membrane repair | Mutations linked to muscular dystrophy; regulates repair |
| Ferroptosis regulators (GPX4, ACSL4) | Lipid peroxidation and membrane integrity | Modulate membrane repair and cell death |
How Is positive regulation of plasma membrane repair Regulated?
Positive regulation of plasma membrane repair is controlled by calcium signaling, protein phosphorylation, ubiquitination, and transcriptional programs. Calcium influx acts as the primary trigger, activating calpains and synaptotagmins. The UFL1-PARP1 axis represents a ubiquitination-dependent regulatory pathway that enhances repair and anti-tumor immunity. Focal adhesion kinase (PTK2/FAK) signaling promotes cytoskeletal remodeling necessary for repair. Additionally, mitochondrial dynamics regulators such as DNM1L and FIS1 modulate the energy supply for repair. These pathways are often dysregulated in disease, making them attractive therapeutic targets.
positive regulation of plasma membrane repair and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| DNM1L | High-grade glioma | U87 or U251 glioma cell lines with DNM1L knockout |
| UFL1 | Cancer immunotherapy | B16 melanoma or MC38 colon cancer models with UFL1 knockout |
| PTK2 (FAK) | Ulcerative colitis | DSS-induced colitis in mice with FAK inhibitors |
| TGFBR1 | Pulmonary fibrosis | Bleomycin-induced lung fibrosis in Nestin knockout mice |
| TREM2 | Scar formation | Mouse skin wound models with CAR-TREM2 macrophages |
Cancer and therapy resistance
Cancer cells often upregulate plasma membrane repair to survive immune attack and chemotherapy. The DNM1L/DRP1-FIS1 axis promotes mitochondrial remodeling and membrane repair in high-grade glioma, and targeting this axis inhibits tumor progression. The UFL1-PARP1 axis amplifies anti-tumor immunity, suggesting that modulating repair pathways can enhance immunotherapy. TREX1 regulates radiotherapy-induced immunogenicity, linking DNA damage responses to membrane repair.
Fibrosis and tissue remodeling
Nestin promotes pulmonary fibrosis by facilitating recycling of TGF-β receptor I (TGFBR1), which enhances membrane repair and fibrotic signaling. CAR-TREM2 macrophages regulate the fibrotic microenvironment and scar formation, partly through effects on membrane repair. These findings highlight the role of repair pathways in fibrotic diseases.
Inflammatory bowel disease and mucosal healing
Arctigenin promotes mucosal healing in ulcerative colitis by facilitating focal adhesion assembly and colonic epithelial cell migration via targeting focal adhesion kinase (PTK2/FAK). This demonstrates that positive regulation of plasma membrane repair is critical for epithelial barrier restoration and resolution of inflammation.
Neurodegeneration and muscle disorders
Defects in membrane repair proteins such as dysferlin and caveolin-3 cause muscular dystrophies, and impaired repair contributes to neurodegeneration. Ferroptosis, a form of iron-dependent cell death driven by lipid peroxidation, is closely linked to membrane integrity and repair failure. Targeting positive regulators of repair may offer therapeutic benefits in these conditions.
From positive regulation of plasma membrane repair-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X positively regulate plasma membrane repair? | CRISPR knockout of gene X in HeLa or HEK293 cells followed by laser injury assay |
| Does a specific point mutation in gene X affect repair? | Point mutation knock-in via CRISPR in repair-competent cells |
| Does overexpression of gene X enhance repair? | Lentiviral overexpression of gene X in repair-deficient cells |
| Does gene X interact with repair machinery? | Tagged knock-in (e.g., GFP) for live-cell imaging |
| Is gene X required for tissue repair in vivo? | Conditional knockout mouse models (e.g., muscle or intestinal epithelium) |
| Can gene X be targeted therapeutically? | Xenograft or syngeneic tumor models with CRISPR-edited cells |
How to Study the positive regulation of plasma membrane repair Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Laser injury + live imaging | Repair kinetics and protein recruitment | High-content screening for repair regulators |
| CRISPR knockout screen | Gene requirement for repair | Genome-wide identification of positive regulators |
| Proximity labeling (BioID) | Protein-protein interactions at damage site | Mapping repair machinery |
| Phosphoproteomics | Signaling changes during repair | Identifying kinase pathways |
| RNA-seq | Transcriptional response to injury | Discovering upregulated repair genes |
| Flow cytometry | Cell survival after injury | Validating repair efficiency |
| Immunofluorescence | Localization of repair proteins | Confirming recruitment to wound site |
| Western blot | Expression and modification of repair proteins | Validating knockout or overexpression |
Laser injury and live-cell imaging
Laser injury combined with live-cell microscopy is the gold standard to measure plasma membrane repair kinetics. Fluorescent dyes such as FM1-43 or GFP-tagged repair proteins allow real-time visualization of resealing. This method can be adapted to high-throughput screening to identify positive regulators.
CRISPR screens for repair regulators
Genome-wide CRISPR knockout or activation screens coupled with membrane injury and cell survival readouts can identify novel positive regulators of plasma membrane repair. Such screens have revealed roles for ESCRT components and mitochondrial dynamics proteins. Bioinformatics analysis of screen hits can uncover enriched pathways and networks.
Proteomics and interactomics
Mass spectrometry-based proteomics can identify proteins recruited to damage sites. Proximity labeling (BioID) or immunoprecipitation of repair proteins followed by LC-MS/MS reveals interaction partners and post-translational modifications. These approaches help define the molecular mechanism of positive regulation.
Transcriptomics and functional validation
RNA-seq after membrane injury can identify genes upregulated during repair. Validating candidates with CRISPR knockout or overexpression confirms their positive regulatory role. Integrating transcriptomics with functional assays provides a comprehensive view of repair regulation.
How CRISPR Can Be Used to Study GO:1905686 positive regulation of plasma membrane repair
Knockout
CRISPR knockout is used to delete candidate positive regulators of plasma membrane repair and assess whether repair capacity is reduced. For example, knockout of DNM1L or FIS1 impairs mitochondrial remodeling and membrane repair in glioma cells. Knockout of UFL1 reduces anti-tumor immunity and repair efficiency. These models provide causal evidence for gene function.
Point Mutation
Point mutation knock-in via CRISPR allows precise testing of specific amino acid residues in repair proteins. For instance, mutating calcium-binding sites in synaptotagmin VII or phosphorylation sites in FAK can reveal their role in positive regulation. This approach avoids confounding effects of complete gene deletion.
Knock-in
Knock-in of fluorescent tags (e.g., GFP, mCherry) or epitope tags into endogenous repair genes enables live-cell imaging and proteomic analysis. Tagged ALIX or TSG101 knock-in cells allow real-time tracking of ESCRT recruitment to damage sites. This provides spatial and temporal resolution of repair dynamics.
Overexpression
CRISPR activation (CRISPRa) or lentiviral overexpression can upregulate candidate genes to test whether they enhance plasma membrane repair. Overexpression of MG53 or dysferlin improves repair in muscle cells. This approach is useful for identifying gain-of-function effects and therapeutic candidates.
How EDITGENE Supports positive regulation of plasma membrane repair Research
Researchers studying positive regulation of plasma membrane repair-related genes often need to determine whether a candidate gene is causally involved in the repair process or merely correlated with it. Functional validation through precise genome editing is essential to establish causality and to dissect molecular mechanisms. EDITGENE provides a comprehensive suite of CRISPR services tailored to meet these needs.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of plasma membrane repair research.
Frequently Asked Questions About positive regulation of plasma membrane repair
What is GO:1905686?
GO:1905686 is a Gene Ontology biological process term defined as any process that activates or increases the frequency, rate or extent of plasma membrane repair.
What genes are involved in positive regulation of plasma membrane repair?
Key genes include DNM1L, FIS1, UFL1, PARP1, PTK2 (FAK), TGFBR1, and Nestin, among others.
How does calcium trigger plasma membrane repair?
Calcium influx after membrane injury activates calcium-sensing proteins like synaptotagmins and calpains, which recruit repair machinery to the damage site.
What is the role of ESCRT in membrane repair?
The ESCRT machinery mediates membrane scission and sealing at the injury site, a critical step in plasma membrane repair.
Can CRISPR be used to study plasma membrane repair?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models are powerful tools to dissect gene function in plasma membrane repair.
What diseases are linked to defective plasma membrane repair?
Defective repair is linked to muscular dystrophies, neurodegeneration, cancer, fibrosis, and inflammatory bowel disease.
How is mitochondrial dynamics connected to membrane repair?
Mitochondrial fission proteins DNM1L and FIS1 support energy supply and remodeling needed for efficient membrane repair.
What methods measure plasma membrane repair?
Laser injury with live-cell imaging, CRISPR screens, proteomics, and RNA-seq are commonly used to study repair.
What is the UFL1-PARP1 axis?
UFL1 is a ubiquitin ligase that regulates PARP1, and this axis amplifies anti-tumor immunity and modulates membrane repair.
How does Nestin promote pulmonary fibrosis?
Nestin facilitates recycling of TGF-β receptor I, enhancing membrane repair and fibrotic signaling in pulmonary fibrosis.
Conclusion
Positive regulation of plasma membrane repair (GO:1905686) is a fundamental cellular process that ensures survival after membrane injury. It integrates calcium signaling, ESCRT machinery, cytoskeletal remodeling, and mitochondrial dynamics. Dysregulation of this process contributes to cancer, fibrosis, and inflammatory diseases, making it a promising therapeutic target. Advances in CRISPR genome editing and functional genomics provide powerful tools to dissect the molecular players and translate these findings into clinical applications.
References
- 1. Liu J et al.. 2022. Signaling pathways and defense mechanisms of ferroptosis.. FEBS J 289(22):7038-7050 PMID: 34092035
- 2. Vanpouille-Box C et al.. 2017. DNA exonuclease Trex1 regulates radiotherapy-induced tumour immunogenicity.. Nat Commun 8:15618 PMID: 28598415
- 3. Xu R et al.. 2018. Targeting skeletal endothelium to ameliorate bone loss.. Nat Med 24(6):823-833 PMID: 29785024
- 4. Liu M et al.. 2024. A Strategy Involving Microporous Microneedles Integrated with CAR-TREM2-Macrophages for Scar Management by Regulating Fibrotic Microenvironment.. Adv Mater 36(49):e2406153 PMID: 39313983
- 5. Wang J et al.. 2022. Nestin promotes pulmonary fibrosis via facilitating recycling of TGF-β receptor I.. Eur Respir J 59(5) PMID: 34625478
- 6. Li X et al.. 2024. Targeting DNM1L/DRP1-FIS1 axis inhibits high-grade glioma progression by impeding mitochondrial respiratory cristae remodeling.. J Exp Clin Cancer Res 43(1):273 PMID: 39350223
- 7. Song W et al.. 2025. Targeting the UFL1-PARP1 axis amplifies anti-tumor immunity.. Cell Rep 44(10):116433 PMID: 41105513
- 8. Guo Y et al.. 2024. Arctigenin promotes mucosal healing in ulcerative colitis through facilitating focal adhesion assembly and colonic epithelial cell migration via targeting focal adhesion kinase.. Int Immunopharmacol 128:111552 PMID: 38280335
