GO:1904428 negative regulation of tubulin deacetylation: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1904428 describes any process that stops, prevents, or reduces the frequency, rate, or extent of tubulin deacetylation, thereby preserving acetylated tubulin.
• The major enzyme responsible for tubulin deacetylation is HDAC6, which removes acetyl groups from lysine residues on alpha-tubulin.
• Negative regulation of tubulin deacetylation is critical for microtubule stability, intracellular transport, cell polarity, and cilia function.
• Dysregulation of this process is linked to cancer progression, fibrosis, atrial fibrillation, and viral infection.
• Key genes and proteins involved include HDAC6, alpha-tubulin, PIK3C3, SCIN, MMP9, ITGB1, and Tektin4.
• Experimental approaches to study this process include knockout, point mutation, knock-in, overexpression models, and CRISPR library screening.
Description
Tubulin acetylation is a reversible post-translational modification that occurs on lysine residues of alpha-tubulin, and it is associated with stable microtubules. The removal of acetyl groups from tubulin, known as tubulin deacetylation, is primarily mediated by histone deacetylase 6 (HDAC6). The Gene Ontology term GO:1904428, negative regulation of tubulin deacetylation, encompasses any process that stops, prevents, or reduces the frequency, rate, or extent of tubulin deacetylation. This regulatory process is essential for maintaining the balance of acetylated tubulin, which influences microtubule dynamics, cellular transport, and signaling. Researchers study this term because it plays a central role in diverse physiological and pathological contexts, including cell polarity, fibrosis, cancer metastasis, and viral infection.
negative regulation of tubulin deacetylation At A Glance
| GO ID | GO:1904428 |
|---|---|
| GO term | negative regulation of tubulin deacetylation |
| Ontology | biological_process |
| Synonym | down regulation of tubulin deacetylation, down-regulation of tubulin deacetylation, downregulation of tubulin deacetylation, inhibition of tubulin deacetylation |
| Major function | Preserves acetylated tubulin by inhibiting tubulin deacetylation, thereby stabilizing microtubules and influencing cellular processes such as transport, polarity, and cilia function. |
| Key enzyme | HDAC6 is the primary tubulin deacetylase whose activity is negatively regulated in this process. |
| Substrate | Alpha-tubulin, specifically acetylated lysine residues. |
| Related processes | Microtubule stabilization, autophagy regulation, cell polarity, and cilia length control. |
What Is GO:1904428?
Negative regulation of tubulin deacetylation (GO:1904428) is a biological process that decreases the rate or extent of the removal of acetyl groups from tubulin proteins. In other words, it protects tubulin acetylation by inhibiting the enzymes or pathways that would otherwise deacetylate tubulin.
Why Is negative regulation of tubulin deacetylation Important in Cell Biology?
Understanding negative regulation of tubulin deacetylation is crucial because it controls the dynamic balance of microtubule acetylation, which affects fundamental cellular functions such as intracellular trafficking, cell shape, and mitosis. Dysregulation of this process has been implicated in a wide range of diseases, including cancer, fibrosis, cardiac arrhythmias, and viral infections. Therefore, targeting the regulators of tubulin deacetylation offers potential therapeutic strategies for these conditions.
• Maintains microtubule stability and function by preserving tubulin acetylation.
• Regulates cell polarity and migration, as shown in Sertoli cells through PIK3C3 and SCIN.
• Controls primary cilia length, with implications for fibrotic diseases.
• Influences cancer metastasis, particularly in triple-negative breast cancer via Tektin4 loss.
• Modulates chemosensitivity to paclitaxel in melanoma through class III beta-tubulin.
• Plays a role in cardiac contractile function and atrial fibrillation via HDAC6.
• Affects viral infection, as HDAC6 restricts influenza A virus by deacetylating the RNA polymerase PA subunit.
• Is involved in nasal polyp pathogenesis through miR-29b-3p and MMP9/integrin beta1 signaling.
• Provides targets for HDAC6 inhibitors in cancer and other diseases.
• Serves as a model for studying post-translational modifications and microtubule dynamics.
What Happens During negative regulation of tubulin deacetylation?
Inhibition of HDAC6 activity
In simple terms: The main enzyme that removes acetyl groups from tubulin is blocked or its activity is reduced.
HDAC6 is the principal tubulin deacetylase that removes acetyl groups from lysine residues on alpha-tubulin. Negative regulation of tubulin deacetylation often involves direct or indirect inhibition of HDAC6. For example, in atrial fibrillation, activation of HDAC6 induces contractile dysfunction through derailment of alpha-tubulin proteostasis, implying that negative regulation would counteract this effect. Similarly, HDAC6-mediated tubulin deacetylation is promoted by Tektin4 loss in triple-negative breast cancer, and its inhibition increases sensitivity to HDAC6 inhibitors.
Modulation by signaling proteins
In simple terms: Other proteins can influence whether tubulin deacetylation happens, often by interacting with HDAC6 or tubulin.
Proteins such as PIK3C3 and SCIN are involved in autophagy regulation and Sertoli cell polarity through negative regulation of SCIN, which indirectly affects tubulin deacetylation. Additionally, matrix metalloproteinase-9 (MMP9) and integrin beta1 interaction is targeted by miR-29b-3p, and downregulation of this microRNA promotes alpha-tubulin deacetylation in nasal polyps. These examples illustrate that negative regulation can occur through upstream signaling that modulates the deacetylation machinery.
Preservation of acetylated tubulin
In simple terms: When deacetylation is blocked, tubulin stays acetylated, which makes microtubules more stable.
Acetylation of alpha-tubulin at lysine 40 is a marker of stable microtubules. Negative regulation of tubulin deacetylation leads to an increase in acetylated tubulin levels, which enhances microtubule stability and affects processes such as cilia length regulation. In fibrotic fibroblasts, morphological reprogramming of primary cilia length mitigates the fibrotic phenotype, highlighting the importance of maintaining acetylation status.
Impact on cellular functions
In simple terms: Keeping tubulin acetylated affects how cells move, divide, and respond to their environment.
Acetylated tubulin is important for cell polarity, as shown in Sertoli cells where PIK3C3 controls polarity through negative regulation of SCIN. It also influences chemosensitivity to paclitaxel in melanoma cells, where loss of class III beta-tubulin induced by histone deacetylation is associated with drug response. Furthermore, HDAC6-mediated deacetylation restricts influenza A virus by deacetylating the RNA polymerase PA subunit, indicating a role in antiviral defense.
Key Genes Involved in GO:1904428 negative regulation of tubulin deacetylation
The following genes and proteins are key players in the negative regulation of tubulin deacetylation, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| HDAC6 | Primary tubulin deacetylase; removes acetyl groups from alpha-tubulin | Target for inhibitors in cancer, fibrosis, and cardiac disease |
| TUBA1A | Alpha-tubulin; substrate for acetylation/deacetylation | Marker of microtubule stability; mutated in neurodevelopmental disorders |
| PIK3C3 | Regulates autophagy and Sertoli cell polarity; negatively regulates SCIN | Implicated in cell polarity and autophagy |
| SCIN | Scinderin; actin-binding protein regulated by PIK3C3 | Involved in cell polarity and cytoskeletal dynamics |
| MMP9 | Matrix metalloproteinase-9; interacts with integrin beta1 | Promotes alpha-tubulin deacetylation in nasal polyps |
| ITGB1 | Integrin beta1; interacts with MMP9 | Mediates signaling affecting tubulin acetylation |
| Tektin4 | Tektin family protein; loss promotes HDAC6-mediated tubulin deacetylation | Linked to triple-negative breast cancer metastasis |
| TUBB3 | Class III beta-tubulin; affected by histone deacetylation | Associated with chemosensitivity to paclitaxel in melanoma |
| MIR29B3 | MicroRNA-29b-3p; downregulation promotes tubulin deacetylation | Regulates MMP9/integrin beta1 interaction in nasal polyps |
| HDAC6 (influenza) | Deacetylates RNA polymerase PA subunit of influenza A virus | Restricts viral replication |
| Alpha-tubulin | Major component of microtubules; acetylation site K40 | Central to microtubule dynamics |
| Acetylated tubulin | Post-translationally modified form of tubulin | Marker of stable microtubules and cilia |
| HDAC6 (cardiac) | Activation induces contractile dysfunction in atrial fibrillation | Potential therapeutic target for arrhythmias |
| SCIN (autophagy) | Regulated by PIK3C3; affects autophagy and polarity | Links autophagy to cytoskeletal regulation |
| MMP9/ITGB1 complex | Signaling complex promoting deacetylation | Target for nasal polyp treatment |
| Tektin4 (metastasis) | Loss enhances HDAC6 activity | Biomarker for breast cancer metastasis |
| Class III beta-tubulin | Tubulin isotype affecting drug response | Predicts paclitaxel sensitivity |
| PA subunit | Influenza A virus RNA polymerase subunit; deacetylated by HDAC6 | Viral restriction mechanism |
How Is negative regulation of tubulin deacetylation Regulated?
The negative regulation of tubulin deacetylation is controlled by multiple upstream signals. HDAC6 activity can be modulated by protein-protein interactions, post-translational modifications, and microRNAs such as miR-29b-3p, which targets the MMP9/integrin beta1 interaction to promote deacetylation. Additionally, PIK3C3 regulates autophagy and Sertoli cell polarity through negative regulation of SCIN, indirectly affecting tubulin deacetylation. In cardiac tissue, activation of HDAC6 induces contractile dysfunction, suggesting that negative regulation is protective. These regulatory mechanisms ensure that tubulin acetylation levels are tightly controlled in response to cellular cues.
negative regulation of tubulin deacetylation and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| HDAC6 | Cancer, atrial fibrillation, viral infection | Knockout mice, overexpression cell lines |
| Tektin4 | Triple-negative breast cancer metastasis | Knockout or knockdown in breast cancer cells |
| TUBB3 | Melanoma chemosensitivity | Point mutation or overexpression in melanoma cells |
| MMP9/ITGB1 | Nasal polyps | Knockdown or knockout in nasal epithelial cells |
| PIK3C3 | Cell polarity, autophagy | Knockout in Sertoli cells |
Cancer
Dysregulation of tubulin deacetylation is implicated in cancer progression. In triple-negative breast cancer, loss of Tektin4 promotes HDAC6-mediated tubulin deacetylation, enhancing metastasis and increasing sensitivity to HDAC6 inhibitors. In malignant melanoma, loss of class III beta-tubulin induced by histone deacetylation is associated with chemosensitivity to paclitaxel. These findings suggest that negative regulation of tubulin deacetylation could be a therapeutic strategy in oncology.
Fibrosis
Morphological reprogramming of primary cilia length mitigates the fibrotic phenotype in fibroblasts across diverse fibrotic conditions. Since cilia length is influenced by tubulin acetylation, negative regulation of tubulin deacetylation may play a role in fibrosis. Targeting this process could offer new avenues for antifibrotic therapies.
Cardiac arrhythmias
In experimental and human atrial fibrillation, activation of histone deacetylase-6 induces contractile dysfunction through derailment of alpha-tubulin proteostasis. This indicates that negative regulation of tubulin deacetylation, by inhibiting HDAC6, might protect against atrial fibrillation and related contractile dysfunction.
Viral infection
HDAC6 restricts influenza A virus by deacetylating the RNA polymerase PA subunit. This suggests that negative regulation of tubulin deacetylation, which would preserve acetylation, might have complex effects on viral replication. Understanding this interplay could inform antiviral strategies.
From negative regulation of tubulin deacetylation-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does HDAC6 inhibition increase tubulin acetylation? | HDAC6 knockout or point mutation (catalytic dead) cell lines |
| How does Tektin4 loss affect metastasis? | Tektin4 knockout in triple-negative breast cancer cells |
| What is the role of miR-29b-3p in nasal polyps? | Overexpression or knockout of miR-29b-3p in nasal epithelial cells |
| Does PIK3C3 regulate Sertoli cell polarity via SCIN? | PIK3C3 knockout in Sertoli cells |
| Can modulating cilia length reverse fibrosis? | Knock-in of acetylated tubulin mimics in fibroblasts |
| How does HDAC6 restrict influenza A virus? | HDAC6 overexpression or knockout in infected cells |
How to Study the negative regulation of tubulin deacetylation Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Quantitative mass spectrometry | Acetylation sites and stoichiometry on tubulin | Identifying HDAC6 substrates |
| Immunofluorescence | Acetylated tubulin levels and cilia length | Studying fibrosis and cilia dynamics |
| Western blotting | Protein levels of acetylated tubulin | Assessing HDAC6 inhibitor effects |
| CRISPR knockout | Gene function by loss-of-function | Validating HDAC6, Tektin4 roles |
| CRISPR point mutation | Specific amino acid function | Catalytic dead HDAC6 |
| CRISPR knock-in | Tagged or mutant protein expression | Tracking acetylated tubulin |
| Overexpression | Gain-of-function effects | Studying PIK3C3, SCIN |
| CRISPR library screening | Genome-wide regulators | Identifying novel deacetylation regulators |
Quantitative mass spectrometry
Quantitative mass spectrometry can identify acetylation sites on tubulin and quantify changes in response to negative regulation. For example, Liu et al. used quantitative mass spectrometry to identify new HDAC6-mediated deacetylation sites of tubulin in the mouse brain.
Immunofluorescence and imaging
Immunofluorescence with antibodies against acetylated alpha-tubulin allows visualization of microtubule acetylation levels and cilia length. This method was used to study primary cilia length in fibrotic fibroblasts.
Western blotting
Western blotting with anti-acetylated tubulin antibodies is a standard method to assess tubulin acetylation levels. It has been used to study HDAC6-mediated deacetylation in various contexts.
CRISPR screening
CRISPR library screening can identify genes that regulate tubulin deacetylation. This approach is powerful for uncovering novel regulators and has been applied in cancer research.
How CRISPR Can Be Used to Study GO:1904428 negative regulation of tubulin deacetylation
Knockout
CRISPR knockout of HDAC6 or other deacetylases can confirm their role in tubulin deacetylation. For example, HDAC6 knockout increases acetylated tubulin levels. Knockout of Tektin4 promotes metastasis through HDAC6-mediated deacetylation.
Point Mutation
Point mutations in the catalytic domain of HDAC6 can abolish its deacetylase activity, providing a clean model to study negative regulation. Similarly, mutations in tubulin acetylation sites (e.g., K40R) can prevent acetylation and affect microtubule stability.
Knock-in
Knock-in of tagged tubulin or HDAC6 allows real-time tracking of acetylation dynamics. This approach can be used to study the spatiotemporal regulation of tubulin deacetylation.
Overexpression
Overexpression of HDAC6 or its regulators can mimic disease states. For instance, overexpression of HDAC6 in cardiac cells induces contractile dysfunction. Overexpression of PIK3C3 affects cell polarity through SCIN.
How EDITGENE Supports negative regulation of tubulin deacetylation Research
Researchers studying negative regulation of tubulin deacetylation-related genes often need to determine whether a candidate gene is causally involved in the process or merely correlated with it. EDITGENE provides a comprehensive suite of CRISPR-based services to enable precise genetic manipulation and functional validation.
Contact EDITGENE today to design your custom CRISPR model for negative regulation of tubulin deacetylation research.
Frequently Asked Questions About negative regulation of tubulin deacetylation
What is GO:1904428?
GO:1904428 is the Gene Ontology term for negative regulation of tubulin deacetylation, a biological process that reduces the removal of acetyl groups from tubulin.
What genes are involved in negative regulation of tubulin deacetylation?
Key genes include HDAC6, TUBA1A, PIK3C3, SCIN, MMP9, ITGB1, Tektin4, and TUBB3.
How does HDAC6 regulate tubulin deacetylation?
HDAC6 is the primary enzyme that removes acetyl groups from alpha-tubulin; its inhibition or knockdown increases tubulin acetylation.
What diseases are associated with tubulin deacetylation?
Diseases include cancer, fibrosis, atrial fibrillation, and viral infections.
What methods are used to study negative regulation of tubulin deacetylation?
Methods include quantitative mass spectrometry, immunofluorescence, Western blotting, and CRISPR screening.
What is the role of Tektin4 in tubulin deacetylation?
Loss of Tektin4 promotes HDAC6-mediated tubulin deacetylation and enhances triple-negative breast cancer metastasis.
How does miR-29b-3p affect tubulin deacetylation?
Downregulation of miR-29b-3p promotes alpha-tubulin deacetylation by targeting MMP9/integrin beta1 interaction in nasal polyps.
Can HDAC6 inhibitors increase tubulin acetylation?
Yes, HDAC6 inhibitors increase acetylated tubulin levels and are being explored in cancer and cardiac disease.
What is the connection between tubulin deacetylation and cilia?
Tubulin acetylation affects primary cilia length; negative regulation of deacetylation can modulate cilia and fibrosis.
How can CRISPR help study negative regulation of tubulin deacetylation?
CRISPR knockout, point mutation, knock-in, and overexpression models allow precise manipulation of genes like HDAC6 and Tektin4 to study their functions.
Conclusion
Negative regulation of tubulin deacetylation (GO:1904428) is a critical biological process that preserves tubulin acetylation and maintains microtubule stability. It is governed by a network of enzymes and signaling proteins, with HDAC6 as the central deacetylase. Dysregulation of this process contributes to cancer, fibrosis, cardiac arrhythmias, and viral infections, making it an attractive therapeutic target. Continued research using advanced CRISPR models and multi-omics approaches will further elucidate its mechanisms and disease relevance.
References
- 1. Wang K et al.. 2023. Autophagy regulation and protein kinase activity of PIK3C3 controls sertoli cell polarity through its negative regulation on SCIN (scinderin).. Autophagy 19(11):2934-2957 PMID: 37450577
- 2. Liu N et al.. 2015. New HDAC6-mediated deacetylation sites of tubulin in the mouse brain identified by quantitative mass spectrometry.. Sci Rep 5:16869 PMID: 26581825
- 3. Verma P et al.. 2025. Morphological reprogramming of primary cilia length mitigates the fibrotic phenotype in fibroblasts across diverse fibrotic conditions.. J Cell Sci 138(20) PMID: 40958676
- 4. Liu Z et al.. 2021. Downregulation of miR‑29b‑3p promotes α‑tubulin deacetylation by targeting the interaction of matrix metalloproteinase‑9 with integrin β1 in nasal polyps.. Int J Mol Med 48(1) PMID: 33982786
- 5. Akasaka K et al.. 2009. Loss of class III beta-tubulin induced by histone deacetylation is associated with chemosensitivity to paclitaxel in malignant melanoma cells.. J Invest Dermatol 129(6):1516-26 PMID: 19122647
- 6. Ge LP et al.. 2021. Tektin4 loss promotes triple-negative breast cancer metastasis through HDAC6-mediated tubulin deacetylation and increases sensitivity to HDAC6 inhibitor.. Oncogene 40(12):2323-2334 PMID: 33654196
- 7. Chen H et al.. 2019. HDAC6 Restricts Influenza A Virus by Deacetylation of the RNA Polymerase PA Subunit.. J Virol 93(4) PMID: 30518648
- 8. Zhang D et al.. 2014. Activation of histone deacetylase-6 induces contractile dysfunction through derailment of α-tubulin proteostasis in experimental and human atrial fibrillation.. Circulation 129(3):346-58 PMID: 24146251
