GO:1905716 negative regulation of cornification: Keratinocyte Differentiation Control, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1905716 negative regulation of cornification is a biological process that stops, prevents or reduces the frequency, rate or extent of cornification, the terminal differentiation program that builds the epidermal barrier.
• Cornification is preceded by a keratinocyte-specific set of pyroptosis-related genes, linking this GO term to programmed cell death machinery in the epidermis.
• GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation, providing a direct molecular example of negative regulation of cornification.
• Keratinization-related gene signatures that include cornification regulators predict survival and radiation response in HPV-negative head and neck squamous cell carcinoma.
• Loss of cornification control is associated with atopic dermatitis, systemic sclerosis, and multiple epithelial cancers, making GO:1905716 a clinically relevant research axis.
• CRISPR knockout, point-mutation, knock-in, and overexpression models are the primary tools for causally testing genes that negatively regulate cornification.
Description
GO:1905716 negative regulation of cornification is a Gene Ontology biological process term defined as any process that stops, prevents or reduces the frequency, rate or extent of cornification. Cornification is the terminal differentiation program of keratinocytes that produces the cornified envelope, a specialized structure required for the skin barrier. Because cornification is a one-way terminal fate, its negative regulation is critical for controlling epidermal thickness, barrier formation, and the timing of keratinocyte cell death. Researchers study this term to understand how the epidermis balances differentiation against proliferation and how that balance is disrupted in inflammatory skin disease and cancer. The process is not simply the absence of cornification. Published work shows that cornification is preceded by expression of a keratinocyte-specific set of pyroptosis-related genes, indicating that negative regulators can act by modulating cell-death and differentiation programs that are actively primed in the epidermis. One well-characterized example is GSDMD, which suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation in atopic dermatitis. This illustrates how a single negative regulator can intersect with both transcriptional and epigenetic control of cornification genes. Beyond skin biology, keratinization-related gene signatures that include cornification regulators predict survival and response to radiation in patients with HPV-negative head and neck squamous cell carcinoma, where cornification and integrin signaling are co-regulated. Related work shows that mucosa-like differentiation of head and neck cancer cells is inducible and drives epigenetic loss of cell malignancy, further linking differentiation control to tumor behavior. Altered pathways of keratinization, extracellular matrix generation, angiogenesis, and stromal stem cell proliferation have also been described in patients with systemic sclerosis, indicating that negative regulation of cornification is relevant to fibrotic and autoimmune contexts. This article summarizes the definition, mechanism, key genes, disease links, and research methods for GO:1905716.
negative regulation of cornification At A Glance
| GO ID | GO:1905716 |
|---|---|
| GO term | negative regulation of cornification |
| Ontology | biological_process |
| Synonym | down regulation of cornification; down-regulation of cornification; downregulation of cornification; inhibition of cornification |
| Major function | Stops, prevents or reduces the frequency, rate or extent of cornification, the terminal differentiation program of keratinocytes |
| Related process | Cornification is preceded by a keratinocyte-specific set of pyroptosis-related genes |
| Example regulator | GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation |
| Disease relevance | Atopic dermatitis, systemic sclerosis, and HPV-negative head and neck squamous cell carcinoma |
| Research methods | CRISPR knockout, point mutation, knock-in, overexpression, RNA-seq, and keratinization gene signature analysis |
What Is GO:1905716?
In plain terms, GO:1905716 negative regulation of cornification describes any cellular process that slows down, blocks, or reduces the normal program by which skin keratinocytes build their hardened outer layer. The QuickGO definition states that it is any process that stops, prevents or reduces the frequency, rate or extent of cornification. It is a biological_process term, and its synonyms include down regulation of cornification, down-regulation of cornification, downregulation of cornification, and inhibition of cornification. Functionally, this term captures the brakes on terminal epidermal differentiation, including signals that delay cornified envelope formation, reduce expression of cornification structural genes, or prevent the coordinated cell-death program that accompanies cornification.
Why Is negative regulation of cornification Important in Cell Biology?
GO:1905716 negative regulation of cornification matters because the cornified envelope is the primary barrier that protects organisms from dehydration, pathogens, and environmental stress, and its dysregulation is directly linked to human disease. Published evidence shows that cornification is preceded by a keratinocyte-specific set of pyroptosis-related genes, meaning that negative regulators of cornification sit at the interface of differentiation and programmed cell death. In atopic dermatitis, GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation, providing a mechanistic example of how negative regulation of cornification contributes to barrier dysfunction. In cancer, keratinization-related gene signatures predict survival and radiation response in HPV-negative head and neck squamous cell carcinoma via regulation of cornification and integrin signaling, and mucosa-like differentiation of head and neck cancer cells is inducible and drives epigenetic loss of cell malignancy. In systemic sclerosis, altered pathways of keratinization, extracellular matrix generation, angiogenesis, and stromal stem cell proliferation have been reported. Together, these findings establish GO:1905716 as a clinically and biologically important process for skin biology, oncology, and fibrotic disease research.
• Controls the timing and extent of terminal keratinocyte differentiation, which determines epidermal barrier function.
• Links cornification to pyroptosis-related gene programs in keratinocytes, connecting differentiation to cell-death signaling.
• Provides a mechanistic explanation for barrier defects in atopic dermatitis through GSDMD-mediated suppression of FLG and HDAC1 regulation.
• Contributes to cancer biology, where keratinization-related gene signatures predict survival and radiation response in HPV-negative head and neck squamous cell carcinoma.
• Is relevant to epigenetic loss of malignancy during mucosa-like differentiation of head and neck cancer cells.
• Is associated with altered keratinization pathways in systemic sclerosis, a fibrotic autoimmune disease.
• Offers candidate biomarkers and therapeutic targets for inflammatory skin disease and epithelial cancers.
• Can be dissected with CRISPR knockout, point-mutation, knock-in, and overexpression models to establish causality.
• Supports development of gene signatures and bioinformatics classifiers for patient stratification.
• Connects epidermal differentiation research to broader questions of cell fate, cell death, and tissue homeostasis.
What Happens During negative regulation of cornification?
Initiation of the cornification program and its brakes
In simple terms: Skin cells normally start building a tough outer shell, and negative regulation of cornification is the set of signals that tell them to slow down or stop that building process.
Cornification is the terminal differentiation program of keratinocytes that produces the cornified envelope. Published work shows that epidermal cornification is preceded by the expression of a keratinocyte-specific set of pyroptosis-related genes, indicating that the differentiation program is primed together with cell-death machinery. Negative regulation of cornification (GO:1905716) acts at this initiation stage by reducing the frequency, rate or extent of cornification, thereby preventing premature or excessive terminal differentiation. This control is essential because once keratinocytes commit to cornification, they undergo a specialized cell-death process that cannot be reversed.
Transcriptional suppression of cornification genes
In simple terms: Negative regulators can turn down the genes that build the cornified envelope, so the cell makes less of the structural proteins needed for the shell.
One mechanism of negative regulation of cornification is transcriptional suppression of cornification-associated genes. GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation in atopic dermatitis. Because FLG (filaggrin) is a key structural component of the cornified envelope, its inhibition directly reduces the rate of cornification. The involvement of HDAC1 indicates that epigenetic regulation is part of the negative regulatory mechanism, linking chromatin state to cornification control.
Epigenetic and differentiation-state control
In simple terms: Cells can also lock the cornification program in an off state by changing how DNA-associated proteins are regulated, which is a more lasting way to slow cornification.
Epigenetic mechanisms contribute to negative regulation of cornification. In head and neck cancer cells, mucosa-like differentiation is inducible and drives the epigenetic loss of cell malignancy, showing that differentiation state can be actively reprogrammed at the epigenetic level. Keratinization-related gene signatures that regulate cornification and integrin signaling predict survival and radiation response in HPV-negative head and neck squamous cell carcinoma, further supporting a role for coordinated transcriptional and epigenetic control of cornification. These findings suggest that negative regulation of cornification is not a single switch but a network of transcriptional and epigenetic inputs.
Integration with cell-death and pyroptosis pathways
In simple terms: The same signals that control the hardening of skin cells are tied to the machinery that makes cells self-destruct, so negative regulation of cornification also influences when skin cells die.
Cornification is preceded by expression of a keratinocyte-specific set of pyroptosis-related genes, indicating that negative regulation of cornification intersects with programmed cell death pathways. GSDMD, a pyroptosis effector, suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation, directly connecting a cell-death protein to negative regulation of cornification. Beclin-1 has been reviewed as a target for anticancer therapy and is a central regulator of autophagy and cell death, providing broader context for how cell-death regulators can influence differentiation programs. Together, these observations show that negative regulation of cornification is mechanistically coupled to cell-death and autophagy-related signaling.
Consequences for barrier formation and tissue homeostasis
In simple terms: When cornification is slowed down too much or too little, the skin barrier can become defective, which is why this process matters for health and disease.
The functional consequence of negative regulation of cornification is modulation of the epidermal barrier. In atopic dermatitis, GSDMD-mediated suppression of keratinocyte differentiation and FLG inhibition contributes to barrier dysfunction. In systemic sclerosis, altered pathways of keratinization, extracellular matrix generation, angiogenesis, and stromal stem cell proliferation have been described, indicating that cornification control is part of a broader tissue-remodeling program. In head and neck squamous cell carcinoma, keratinization-related gene signatures that regulate cornification and integrin signaling predict survival and radiation response, showing that the consequences of cornification control extend to tumor behavior and therapy response. These examples demonstrate that negative regulation of cornification has direct consequences for tissue homeostasis and disease.
Key Genes Involved in GO:1905716 negative regulation of cornification
The following genes and proteins have been experimentally or computationally linked to cornification and its negative regulation in the cited literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| GSDMD | Suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation | Direct negative regulator of cornification in atopic dermatitis models |
| FLG | Structural component of the cornified envelope whose expression is inhibited by GSDMD | Readout of cornification suppression and barrier function |
| KCTD6 | Mediates HDAC1 degradation; attenuated by GSDMD | Epigenetic regulator in the negative regulation of cornification |
| HDAC1 | Histone deacetylase whose degradation is mediated by KCTD6 and attenuated by GSDMD | Chromatin-level control of keratinocyte differentiation |
| Cx26 (GJB2) | Gap junction protein studied with dominant-negative mutants and knockdown in organotypic epidermis | Model for differentiation defects in skin disease-linked mutants |
| Pyroptosis-related genes (keratinocyte-specific set) | Expressed before epidermal cornification | Link between cornification and programmed cell death |
| Keratinization-related gene signature genes | Regulate cornification and integrin signaling | Predict survival and radiation response in HPV-negative HNSCC |
| Beclin-1 (BECN1) | Central regulator of autophagy and cell death | Context for cell-death control intersecting with differentiation |
| Extracellular matrix genes | Altered alongside keratinization pathways in systemic sclerosis | Fibrosis and tissue-remodeling research |
| Angiogenesis-related genes | Altered alongside keratinization pathways in systemic sclerosis | Vascular remodeling research in fibrotic disease |
| Stromal stem cell proliferation genes | Altered alongside keratinization pathways in systemic sclerosis | Stromal contribution to tissue remodeling |
| Multiomics immune classifier genes | Decipher immune heterogeneity in clear cell renal cell carcinoma | Bioinformatics framework applicable to cornification-related signatures |
| Mucosa-like differentiation genes | Inducible differentiation drives epigenetic loss of malignancy in head and neck cancer cells | Differentiation-based cancer therapy research |
| Integrin signaling genes | Co-regulated with cornification in HPV-negative HNSCC | Adhesion and differentiation crosstalk |
| Epidermal differentiation genes | Terminal differentiation program of keratinocytes | Baseline biology of cornification |
| Skin disease-linked connexin mutants | Dominant-negative Cx26 mutants affect organotypic epidermis differentiation | Genetic models of differentiation disorders |
How Is negative regulation of cornification Regulated?
Negative regulation of cornification is controlled by a combination of transcriptional, epigenetic, and cell-death-related inputs. GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation, which places HDAC1-dependent chromatin regulation downstream of GSDMD in atopic dermatitis. The observation that cornification is preceded by a keratinocyte-specific set of pyroptosis-related genes indicates that cell-death signaling is a regulatory input into cornification timing. Beclin-1, a central autophagy and cell-death regulator reviewed as an anticancer target, provides broader context for how stress and death pathways can modulate differentiation. In cancer, keratinization-related gene signatures that regulate cornification and integrin signaling predict survival and radiation response, suggesting that microenvironmental and adhesion signals also feed into this regulatory network. Mucosa-like differentiation of head and neck cancer cells is inducible and drives epigenetic loss of cell malignancy, further supporting epigenetic control of differentiation state.
negative regulation of cornification and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| GSDMD | Atopic dermatitis; suppression of keratinocyte differentiation via FLG and HDAC1 | Keratinocyte knockout and overexpression models |
| FLG | Atopic dermatitis; cornified envelope structural protein inhibited by GSDMD | Knockdown and rescue in organotypic epidermis |
| KCTD6 | Atopic dermatitis; mediates HDAC1 degradation attenuated by GSDMD | Knockout and point-mutation models |
| HDAC1 | Atopic dermatitis; epigenetic regulator downstream of KCTD6 | Knock-in and overexpression models |
| Keratinization-related signature genes | HPV-negative head and neck squamous cell carcinoma; survival and radiation response | CRISPR library screening and signature validation |
| Mucosa-like differentiation genes | Head and neck cancer; epigenetic loss of malignancy | Inducible differentiation models |
| Cx26 (GJB2) | Skin disease-linked mutants; organotypic epidermis differentiation | Dominant-negative and knockdown models |
Atopic dermatitis and inflammatory skin disease
Atopic dermatitis is a chronic inflammatory skin disease in which barrier dysfunction is a central feature. GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation in atopic dermatitis, providing a direct mechanistic link between negative regulation of cornification and disease. Because FLG is a key cornified envelope protein, its suppression by GSDMD reduces the rate of cornification and impairs barrier function. This makes GSDMD and its downstream effectors candidate targets for therapeutic strategies aimed at restoring normal cornification in atopic dermatitis.
Head and neck squamous cell carcinoma
Keratinization-related gene signatures that regulate cornification and integrin signaling predict survival and response to radiation in patients with HPV-negative head and neck squamous cell carcinoma. This indicates that negative regulation of cornification is not only a differentiation phenomenon but also a determinant of tumor behavior and therapy response. In related work, mucosa-like differentiation of head and neck cancer cells is inducible and drives the epigenetic loss of cell malignancy, suggesting that forcing differentiation programs can reverse malignant features. Together, these studies support the exploration of cornification-regulating genes as biomarkers and therapeutic targets in head and neck cancer.
Systemic sclerosis and fibrotic disease
Systemic sclerosis is characterized by fibrosis and vascular dysfunction. Altered pathways of keratinization, extracellular matrix generation, angiogenesis, and stromal stem cell proliferation have been described in patients with systemic sclerosis. These findings place negative regulation of cornification within a broader network of tissue-remodeling processes that are dysregulated in fibrotic disease. Studying cornification regulators in systemic sclerosis may reveal new connections between epidermal differentiation and stromal remodeling.
Clear cell renal cell carcinoma and multiomics immune heterogeneity
MOICS, a novel classifier, was developed to decipher immune heterogeneity and aid precise management of clear cell renal cell carcinoma at the multiomics level. Although this study focuses on renal cancer, its multiomics framework is directly applicable to cornification-related gene signatures, which have already been shown to predict outcomes in head and neck cancer. Combining immune and differentiation signatures may improve patient stratification across epithelial cancers.
From negative regulation of cornification-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of a candidate gene increase cornification? | CRISPR knockout in keratinocytes followed by differentiation assays |
| Does a specific point mutation alter negative regulation of cornification? | CRISPR point-mutation knock-in in keratinocyte lines |
| Can a disease-associated variant be corrected to restore cornification control? | Knock-in of wild-type versus mutant allele |
| Where and when is a candidate regulator expressed during differentiation? | Tagged knock-in with fluorescent or epitope tag |
| Does overexpression of a negative regulator suppress cornification? | Overexpression in keratinocytes and organotypic epidermis |
| Which genes are required for cornification suppression at scale? | CRISPR library screening with differentiation-based selection |
| How does a regulator affect global transcription during differentiation? | RNA-seq after knockout or overexpression |
How to Study the negative regulation of cornification Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Global transcriptome changes during differentiation | Identifying cornification-associated gene modules |
| CRISPR knockout | Loss-of-function effects on cornification | Testing causal role of candidate negative regulators |
| CRISPR point mutation | Effect of specific variants on cornification control | Modeling disease-associated mutations |
| CRISPR knock-in | Tagged or corrected allele function | Tracking protein expression during differentiation |
| Overexpression | Gain-of-function effects on cornification | Testing whether a regulator suppresses differentiation |
| Organotypic epidermis culture | Tissue-level differentiation and barrier formation | Validating findings in a skin-like model |
| Epigenetic assays | Histone acetylation and HDAC activity | Dissecting KCTD6-HDAC1-dependent regulation |
| Cell-death and pyroptosis assays | GSDMD cleavage and cell-death markers | Linking cornification to programmed cell death |
Transcriptomic profiling of cornification programs
RNA-seq is widely used to measure how negative regulators of cornification change global gene expression during keratinocyte differentiation. Keratinization-related gene signatures that regulate cornification and integrin signaling have been derived from transcriptomic data and used to predict survival and radiation response in HPV-negative head and neck squamous cell carcinoma. Mucosa-like differentiation of head and neck cancer cells has also been characterized transcriptionally, revealing epigenetic loss of cell malignancy. These approaches allow researchers to identify cornification-associated gene modules and to test whether candidate regulators alter them.
Epigenetic and chromatin assays
Because HDAC1 is involved in the negative regulation of cornification downstream of GSDMD and KCTD6, chromatin-focused methods such as histone acetylation profiling and HDAC activity assays are informative. The finding that GSDMD attenuates KCTD6-mediated HDAC1 degradation suggests that protein stability and chromatin state are both relevant readouts. Combining epigenetic assays with transcriptomics can reveal how negative regulators lock keratinocytes in a non-cornified state.
Cell-death and pyroptosis assays
Cornification is preceded by expression of a keratinocyte-specific set of pyroptosis-related genes, so assays for pyroptosis and programmed cell death are directly relevant to GO:1905716. GSDMD, a pyroptosis effector, suppresses keratinocyte differentiation, making cell-death readouts essential when studying negative regulation of cornification. Beclin-1, a central autophagy and cell-death regulator, provides additional context for how death pathways intersect with differentiation. Researchers can combine viability, caspase, and GSDMD cleavage assays with differentiation markers.
Organotypic and in vivo skin models
Organotypic epidermis models have been used to study differentiation in the presence of skin disease-linked dominant-negative Cx26 mutants and knockdown Cx26, demonstrating their utility for cornification research. Such models allow researchers to test whether genetic perturbations alter cornification rate and barrier formation in a tissue-like context. They can be combined with CRISPR editing to introduce disease-relevant mutations and to validate findings from monolayer keratinocyte cultures.
How CRISPR Can Be Used to Study GO:1905716 negative regulation of cornification
Knockout
CRISPR knockout is used to remove candidate negative regulators of cornification and test whether their loss increases or decreases the rate of keratinocyte differentiation. For example, GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation, so GSDMD knockout models are valuable for testing whether cornification is de-repressed. Knockout of KCTD6 or HDAC1 can similarly reveal their contributions to the negative regulation of cornification. These experiments establish causality and identify which genes are required for suppressing cornification.
Point Mutation
CRISPR point mutation is used to introduce specific disease-associated variants into genes that regulate cornification. Skin disease-linked dominant-negative Cx26 mutants have been studied in organotypic epidermis, showing that single amino acid changes can disrupt differentiation. Point-mutation models allow researchers to ask whether a specific variant alters the negative regulation of cornification without changing the rest of the protein. This is particularly useful for distinguishing pathogenic variants from benign polymorphisms in cornification-related genes.
Knock-in
CRISPR knock-in can be used to add tags, reporters, or corrected alleles to genes involved in negative regulation of cornification. Tagged knock-in of a candidate regulator allows tracking of its expression and localization during keratinocyte differentiation. Correcting a disease-associated mutation by knock-in can test whether normal cornification control is restored. These models are essential for linking genotype to differentiation phenotype in a physiologically relevant context.
Overexpression
CRISPR-mediated overexpression or cDNA-based overexpression is used to test whether increased levels of a candidate gene suppress cornification. GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation, so overexpression of GSDMD or its downstream effectors is expected to reduce cornification. Overexpression models complement knockout studies by providing gain-of-function evidence for negative regulation of cornification. They are also useful for testing whether a gene is sufficient, not just necessary, for suppressing differentiation.
How EDITGENE Supports negative regulation of cornification Research
Researchers studying negative regulation of cornification-related genes often need to determine whether a candidate gene is causally involved in suppressing or promoting keratinocyte differentiation. Establishing causality requires precise genetic tools that can remove, modify, or add gene function in relevant cell models. EDITGENE provides CRISPR-based knockout, point-mutation, knock-in, and overexpression cell models, together with CRISPR library screening and bioinformatics services, to support mechanistic and translational studies of GO:1905716 and its associated genes.
Contact EDITGENE today to design your custom CRISPR model for negative regulation of cornification research.
Frequently Asked Questions About negative regulation of cornification
What is GO:1905716 negative regulation of cornification?
GO:1905716 is a Gene Ontology biological process term defined as any process that stops, prevents or reduces the frequency, rate or extent of cornification, the terminal differentiation program of keratinocytes.
What genes are involved in negative regulation of cornification?
Genes experimentally linked to this process include GSDMD, FLG, KCTD6, and HDAC1, as well as keratinization-related signature genes and pyroptosis-related genes expressed before cornification.
How does GSDMD regulate cornification?
GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation in atopic dermatitis.
Why is negative regulation of cornification important in skin disease?
In atopic dermatitis, GSDMD-mediated suppression of keratinocyte differentiation and FLG inhibition contributes to barrier dysfunction, making this process directly relevant to disease.
Is negative regulation of cornification involved in cancer?
Yes. Keratinization-related gene signatures that regulate cornification and integrin signaling predict survival and radiation response in HPV-negative head and neck squamous cell carcinoma. Mucosa-like differentiation of head and neck cancer cells is also inducible and drives epigenetic loss of cell malignancy.
What methods are used to study negative regulation of cornification?
Common methods include RNA-seq, CRISPR knockout, point mutation, knock-in, overexpression, organotypic epidermis culture, epigenetic assays, and cell-death or pyroptosis assays.
What is the relationship between cornification and pyroptosis?
Epidermal cornification is preceded by the expression of a keratinocyte-specific set of pyroptosis-related genes, indicating that cell-death programs are primed alongside differentiation.
Which diseases are associated with altered cornification pathways?
Atopic dermatitis, systemic sclerosis, and HPV-negative head and neck squamous cell carcinoma have all been linked to altered cornification or keratinization pathways.
Can CRISPR be used to study negative regulation of cornification?
Yes. CRISPR knockout, point mutation, knock-in, and overexpression models are used to test causal roles of candidate genes in suppressing or promoting cornification.
What is the role of HDAC1 in negative regulation of cornification?
HDAC1 is downstream of KCTD6, whose degradation is attenuated by GSDMD, linking epigenetic regulation to suppression of keratinocyte differentiation.
Conclusion
GO:1905716 negative regulation of cornification defines the biological processes that stop, prevent or reduce cornification, the terminal differentiation program of keratinocytes. Published evidence links this process to pyroptosis-related gene expression before cornification, to GSDMD-mediated suppression of FLG and HDAC1 regulation in atopic dermatitis, and to keratinization-related gene signatures that predict outcomes in head and neck cancer. It is also relevant to systemic sclerosis and multiomics cancer classification. Because negative regulation of cornification sits at the intersection of differentiation, cell death, and epigenetic control, it is a rich area for mechanistic and translational research. CRISPR knockout, point-mutation, knock-in, and overexpression models, combined with transcriptomics and organotypic culture, provide the tools needed to establish causality and to identify therapeutic targets.
References
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- 2. Lee MK et al.. 2026. Keratinization-related gene signature predicting survival and response to radiation in patients with HPV-negative head and neck squamous cell carcinoma via regulation of cornification and integrin signaling.. Cell Mol Biol Lett 31(1) PMID: 41612193
- 3. Toton E et al.. 2014. Beclin-1 and its role as a target for anticancer therapy.. J Physiol Pharmacol 65(4):459-67 PMID: 25179078
- 4. Thomas T et al.. 2007. Differentiation of organotypic epidermis in the presence of skin disease-linked dominant-negative Cx26 mutants and knockdown Cx26.. J Membr Biol 217(1-3):93-104 PMID: 17638039
- 5. Zhong Y et al.. 2024. GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation in atopic dermatitis.. PeerJ 12:e16768 PMID: 38250727
- 6. Oppel F et al.. 2024. Mucosa-like differentiation of head and neck cancer cells is inducible and drives the epigenetic loss of cell malignancy.. Cell Death Dis 15(10):724 PMID: 39358322
- 7. Spinella A et al.. 2023. Altered pathways of keratinization, extracellular matrix generation, angiogenesis, and stromal stem cells proliferation in patients with systemic sclerosis.. J Scleroderma Relat Disord 8(2):151-166 PMID: 37287944
- 8. Liu Y et al.. 2024. MOICS, a novel classier deciphering immune heterogeneity and aid precise management of clear cell renal cell carcinoma at multiomics level.. Cancer Biol Ther 25(1):2345977 PMID: 38659199
