GO:1905672 negative regulation of lysosome organization: Regulation, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1905672 is a biological process term defined as any process that stops, prevents or reduces the frequency, rate or extent of lysosome organization [QuickGO].
• Lysosome organization encompasses biogenesis, positioning, size control, and functional maturation of lysosomes; its negative regulation is critical for cellular homeostasis [1, 6].
• Key negative regulators include signaling proteins such as TBK1, which restrains IRGQ-mediated autophagy, and the transcription factor TFEB, whose activity is suppressed by mTORC1 to limit lysosomal biogenesis [7, 8].
• Dysregulation of negative regulation of lysosome organization contributes to cancer progression, neurodegeneration, and lysosomal storage disorders such as Fabry disease [5, 8].
• Experimental approaches to study this process include CRISPR knockout, point mutation, knock-in, and overexpression models, combined with imaging, proteomics, and transcriptomics [1, 8].
• Understanding the negative regulation of lysosome organization offers therapeutic opportunities, particularly in cancers where lysosomal activity drives invasion and in diseases with impaired lysosomal function [5, 8].
Description
Lysosomes are dynamic organelles essential for degradation and recycling of cellular material, and their organization is tightly controlled to meet metabolic demands. The Gene Ontology term GO:1905672, negative regulation of lysosome organization, describes any process that stops, prevents, or reduces the frequency, rate, or extent of lysosome organization [QuickGO]. This regulatory process is fundamental for maintaining cellular homeostasis and responding to stress, as excessive or misregulated lysosomal activity can lead to pathology [1, 7]. Researchers study this term to understand how cells balance lysosomal biogenesis, positioning, and function, and how disruptions contribute to diseases such as cancer and neurodegeneration [5, 8]. The negative regulation of lysosome organization involves a complex network of signaling pathways and protein interactions that ultimately control lysosomal abundance and activity [7, 8]. For example, TBK1 has been shown to put the brakes on IRGQ-mediated autophagy, a process linked to lysosome organization. Similarly, TFEB, a master regulator of lysosomal biogenesis, is negatively regulated by mTORC1, and its repression prevents excessive lysosomal degradation and invasion in triple-negative breast cancer cells. These findings highlight the importance of negative regulation in preventing pathological outcomes. This article provides a comprehensive overview of GO:1905672, covering its definition, biological significance, key genes, regulatory mechanisms, disease associations, and experimental models for research.
negative regulation of lysosome organization At A Glance
| GO ID | GO:1905672 |
|---|---|
| GO term | negative regulation of lysosome organization |
| Ontology | biological_process |
| Synonym | inhibition of lysosome organization; down regulation of lysosome organization; negative regulation of lysosome organisation |
| Major function | Suppression of lysosome biogenesis, positioning, and functional maturation |
| Related processes | Autophagy, endocytic pathway, mTORC1 signaling, TFEB regulation |
| Cellular location | Cytosol, lysosomal membrane, nucleus (for transcriptional regulators) |
| Key regulators | TBK1, TFEB, mTORC1, IRGQ |
| Disease relevance | Cancer, neurodegeneration, lysosomal storage disorders |
What Is GO:1905672?
According to the Gene Ontology, GO:1905672 (negative regulation of lysosome organization) is defined as any process that stops, prevents or reduces the frequency, rate or extent of lysosome organization. In other words, it encompasses molecular events that inhibit the formation, maturation, or functional assembly of lysosomes, thereby limiting their numbers or activity within the cell.
Why Is negative regulation of lysosome organization Important in Cell Biology?
The negative regulation of lysosome organization is crucial for cellular homeostasis because it prevents excessive lysosomal degradation and maintains appropriate lysosomal numbers and activity. Dysregulation of this process can lead to a range of diseases, including cancer, where increased lysosomal activity promotes invasion and metastasis, and neurodegenerative disorders, where impaired lysosomal function contributes to protein aggregation [5, 7, 8]. Understanding the mechanisms that negatively regulate lysosome organization provides insights into fundamental cell biology and offers potential therapeutic targets for modulating lysosomal function in disease.
• Maintains cellular homeostasis by preventing overactive lysosomal degradation.
• Controls lysosomal biogenesis and function through signaling pathways such as mTORC1-TFEB.
• Influences cancer progression by regulating lysosomal-dependent invasion and metastasis [1, 8].
• Plays a role in neurodegeneration where lysosomal dysfunction is a hallmark.
• Impacts lysosomal storage disorders like Fabry disease, where lysosomal organization is perturbed.
• Modulates autophagy, a process critical for cellular quality control.
• Affects immune responses through regulation of innate immunity and microbial control.
• Provides targets for therapeutic intervention in diseases with lysosomal dysregulation [5, 8].
• Helps understand the balance between lysosome biogenesis and degradation in aging.
• Relevant to T cell activation and immune regulation through inhibitory adapters.
What Happens During negative regulation of lysosome organization?
Initiation of negative regulation
In simple terms: The cell receives signals that tell it to slow down or stop making new lysosomes.
Negative regulation of lysosome organization is initiated by various cellular cues, including nutrient availability, stress, and immune signals. For instance, the kinase TBK1 acts as a negative regulator by restraining IRGQ-mediated autophagy, which affects lysosome organization. Additionally, mTORC1 signaling suppresses the transcription factor TFEB, a master regulator of lysosomal biogenesis, thereby reducing lysosome formation. These signals converge to inhibit the expression of lysosomal genes and the assembly of lysosomal components.
Inhibition of lysosomal biogenesis
In simple terms: The production of new lysosomes is reduced by turning off genes that build them.
A key mechanism is the inhibition of lysosomal biogenesis through transcriptional repression. TFEB, which normally promotes lysosomal gene expression, is phosphorylated by mTORC1 and retained in the cytoplasm, preventing it from activating target genes. This negative regulation reduces the number of lysosomes and their degradative capacity. Other factors, such as the inhibitory adapters in T cells, may also modulate lysosomal organization through negative feedback loops.
Regulation of lysosomal positioning and size
In simple terms: The location and size of lysosomes are controlled to prevent them from clustering or becoming too large.
Negative regulation also affects lysosomal positioning and size. For example, Coronin 1C promotes triple-negative breast cancer invasiveness by regulating MT1-MMP traffic and invadopodia function, processes that involve lysosomal trafficking. Annexin A6 in the liver is involved in endocytic compartment dynamics, which can influence lysosomal organization. These proteins help ensure lysosomes are appropriately distributed and sized, preventing pathological aggregation or excessive degradation.
Feedback and crosstalk with autophagy
In simple terms: The process is fine-tuned by feedback loops that connect it to autophagy and other degradation pathways.
Negative regulation of lysosome organization is tightly integrated with autophagy. TBK1-mediated inhibition of IRGQ provides a brake on autophagy, which in turn affects lysosome function. Similarly, TFEB repression by mTORC1 links nutrient sensing to both autophagy and lysosomal biogenesis. This crosstalk ensures that lysosomal degradation is balanced with other cellular needs, and dysregulation can lead to disease.
Key Genes Involved in GO:1905672 negative regulation of lysosome organization
The following genes and proteins are key players in the negative regulation of lysosome organization, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| TBK1 | Negative regulator of IRGQ-mediated autophagy, affecting lysosome organization | Target for modulating autophagy in cancer and immunity |
| TFEB | Transcription factor promoting lysosomal biogenesis; negatively regulated by mTORC1 | Central node in lysosomal regulation; target in cancer and neurodegeneration |
| mTORC1 | Kinase complex that phosphorylates TFEB, inhibiting lysosomal biogenesis | Key nutrient sensor; drug target for lysosomal disorders |
| IRGQ | Mediator of autophagy; inhibited by TBK1 | Potential target for autophagy-related diseases |
| Coronin 1C | Regulates MT1-MMP traffic and invadopodia function, influencing lysosomal trafficking | Marker for cancer invasiveness; therapeutic target |
| Annexin A6 | Involved in endocytic compartment and liver physiology | Role in endolysosomal trafficking and liver disease |
| IL-27 | Regulates innate immunity and microbial growth, potentially affecting lysosomal processes | Immune modulation and infection control |
| FKBP12.6/1b | Negative regulator of calcium, rescues memory and genomic regulation in aging | Aging and neurodegeneration research |
| Inhibitory adapters (e.g., SHP-1, SHIP) | Negative feedback of T cell activation | Immune regulation and autoimmunity |
| MT1-MMP | Matrix metalloproteinase involved in invadopodia and lysosomal trafficking | Cancer invasion and metastasis |
| TFEB targets (e.g., lysosomal genes) | Genes involved in lysosome biogenesis and function | Biomarkers for lysosomal activity |
| mTOR | Upstream regulator of TFEB and lysosomal biogenesis | Target of rapamycin analogs in disease |
| IRGQ | Autophagy receptor | Autophagy modulation |
| Coronin 1C | Actin-binding protein | Cytoskeletal dynamics in cancer |
| Annexin A6 | Calcium-dependent membrane-binding protein | Membrane trafficking |
| IL-27 | Cytokine | Immune regulation |
| FKBP12.6/1b | Immunophilin | Calcium signaling |
| SHP-1 | Phosphatase | T cell signaling |
How Is negative regulation of lysosome organization Regulated?
The negative regulation of lysosome organization is controlled by multiple signaling pathways. The mTORC1 pathway is a central regulator: when nutrients are abundant, mTORC1 phosphorylates TFEB, preventing its nuclear translocation and thereby inhibiting lysosomal biogenesis. Conversely, nutrient deprivation or mTORC1 inhibition allows TFEB to enter the nucleus and activate lysosomal genes. TBK1 acts as a negative regulator of autophagy by inhibiting IRGQ, which may indirectly affect lysosome organization. Additionally, calcium signaling and immunophilins such as FKBP12.6/1b can modulate lysosomal processes in aging. In immune cells, inhibitory adapters like SHP-1 provide negative feedback that may influence lysosomal organization. These regulatory layers ensure that lysosome organization is appropriately tuned to cellular conditions.
negative regulation of lysosome organization and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| TFEB | Triple-negative breast cancer invasion | Knockout or overexpression in cancer cell lines |
| Coronin 1C | Cancer invasiveness | Knockdown or knockout in breast cancer cells |
| TBK1 | Autophagy-related diseases | Knockout in autophagy reporter cells |
| FKBP12.6/1b | Aging and memory | Knockout in rodent models |
| Annexin A6 | Liver disease | Liver-specific knockout mice |
Cancer
Dysregulation of negative regulation of lysosome organization is implicated in cancer. In triple-negative breast cancer, TFEB triggers a matrix degradation and invasion program upon mTORC1 repression, leading to increased lysosomal activity and invasiveness. Coronin 1C promotes invasiveness through regulation of MT1-MMP traffic and invadopodia function, processes that involve lysosomal trafficking. Thus, loss of negative regulation can enhance lysosomal degradation and promote metastasis.
Neurodegeneration
Impaired lysosomal function is a hallmark of neurodegenerative diseases. Negative regulation of lysosome organization may be disrupted in aging and neurodegeneration, as suggested by studies on FKBP12.6/1b, which rescues memory and restores genomic regulation in the hippocampus of aging rats. Proper negative regulation is necessary to prevent excessive or insufficient lysosomal activity that could contribute to neuronal death.
Lysosomal storage disorders
Fabry disease is a lysosomal storage disorder characterized by impaired lysosomal function. Expert consensus on therapeutic goals highlights the importance of managing lysosomal organization. Negative regulation of lysosome organization may be altered in such disorders, and understanding these mechanisms could lead to new therapies.
Immune regulation
Negative regulation of lysosome organization also impacts immune responses. IL-27 regulates innate immunity and control of microbial growth, potentially through effects on lysosomal processes. Inhibitory adapters in T cells provide negative feedback that may influence lysosomal organization and immune activation.
From negative regulation of lysosome organization-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X negatively regulate lysosome organization? | CRISPR knockout in HeLa or HEK293 cells followed by lysosomal imaging |
| What is the effect of a point mutation in TFEB on lysosomal biogenesis? | CRISPR point mutation knock-in in cancer cell lines |
| How does overexpression of TBK1 affect autophagy and lysosomes? | Doxycycline-inducible overexpression in U2OS cells |
| Does a tagged TFEB knock-in reveal its localization dynamics? | CRISPR knock-in of fluorescent tag in iPSCs |
| Can we screen for negative regulators of lysosome organization? | CRISPR library screening with lysosomal reporters |
| What is the role of Coronin 1C in lysosomal trafficking? | Knockout in MDA-MB-231 cells followed by invadopodia assays |
How to Study the negative regulation of lysosome organization Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Fluorescence microscopy | Lysosome number, size, positioning | Visualizing effects of gene knockout |
| RNA-seq | Transcriptional changes in lysosomal genes | Assessing TFEB target activation |
| Proteomics | Protein composition of lysosomes | Identifying novel regulators |
| Autophagy flux assay | Autophagic degradation rate | Evaluating TBK1/IRGQ function |
| Invasion assay | Cell invasion capacity | Studying cancer metastasis |
| CRISPR screen | Identification of negative regulators | High-throughput discovery |
| Western blot | Protein levels and phosphorylation | Confirming mTORC1-TFEB signaling |
| qPCR | mRNA levels of lysosomal genes | Validating transcriptomic data |
Imaging-based methods
Fluorescence microscopy using lysosomal markers (e.g., LysoTracker, LAMP1) allows visualization of lysosome number, size, and positioning. Live-cell imaging can track lysosomal dynamics in response to negative regulators [1, 8].
Transcriptomics and proteomics
RNA-seq can measure expression of lysosomal genes upon modulation of negative regulators. Proteomics of lysosomal fractions can identify changes in protein composition.
Functional assays
Autophagy flux assays, lysosomal degradation assays, and invasion assays (e.g., Matrigel) can assess the functional consequences of altered negative regulation [1, 7].
CRISPR screening
Genome-wide CRISPR knockout or activation screens with lysosomal reporters can identify novel negative regulators of lysosome organization.
How CRISPR Can Be Used to Study GO:1905672 negative regulation of lysosome organization
Knockout
CRISPR knockout of candidate negative regulators (e.g., TBK1, TFEB) can reveal their role in lysosome organization. For example, knocking out TBK1 may enhance autophagy and alter lysosomal numbers. Knockout of TFEB would reduce lysosomal biogenesis, confirming its positive role.
Point Mutation
Introducing point mutations in genes like TFEB can mimic phosphorylation sites (e.g., S211A) to study constitutive activation or inhibition of lysosomal biogenesis. This helps dissect signaling pathways.
Knock-in
Knock-in of fluorescent tags (e.g., GFP-LAMP1) allows real-time tracking of lysosomes. Tagging endogenous TFEB can reveal its localization dynamics under negative regulation.
Overexpression
Overexpression of negative regulators such as TBK1 or constitutively active mTORC1 can suppress lysosome organization, providing gain-of-function models to study downstream effects [7, 8].
How EDITGENE Supports negative regulation of lysosome organization Research
Researchers studying negative regulation of lysosome organization-related genes often need to determine whether a candidate gene is causally involved in lysosomal dynamics. EDITGENE provides comprehensive CRISPR-based services to accelerate this research, from gene knockout to precise point mutations and knock-in models.
Contact EDITGENE today to design your custom CRISPR model for negative regulation of lysosome organization research.
Frequently Asked Questions About negative regulation of lysosome organization
What is GO:1905672?
GO:1905672 is a Gene Ontology term for negative regulation of lysosome organization, defined as any process that stops, prevents or reduces the frequency, rate or extent of lysosome organization.
What genes are involved in negative regulation of lysosome organization?
Key genes include TBK1, TFEB, mTORC1, IRGQ, Coronin 1C, and Annexin A6, among others [1, 6, 7, 8].
How is lysosome organization negatively regulated?
It is regulated by signaling pathways such as mTORC1-TFEB and TBK1-IRGQ, which inhibit lysosomal biogenesis and autophagy [7, 8].
Why is negative regulation of lysosome organization important?
It prevents excessive lysosomal degradation, maintains cellular homeostasis, and its dysregulation is linked to cancer and neurodegeneration [5, 7, 8].
What diseases are associated with negative regulation of lysosome organization?
Cancer, neurodegeneration, lysosomal storage disorders like Fabry disease, and immune disorders [2, 5, 8].
What experimental models are used to study this process?
CRISPR knockout, point mutation, knock-in, overexpression cell lines, and animal models [1, 4, 8].
How does mTORC1 regulate lysosome organization?
mTORC1 phosphorylates TFEB, preventing its nuclear entry and thereby inhibiting lysosomal gene expression.
What is the role of TFEB in lysosome organization?
TFEB is a transcription factor that promotes lysosomal biogenesis; its negative regulation by mTORC1 limits lysosome numbers.
Can CRISPR be used to study negative regulation of lysosome organization?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression are powerful tools to dissect gene function in this process [1, 8].
What methods are used to measure lysosome organization?
Fluorescence microscopy, RNA-seq, proteomics, autophagy flux assays, and CRISPR screens [1, 8].
Conclusion
The negative regulation of lysosome organization (GO:1905672) is a critical biological process that ensures proper lysosomal function and cellular homeostasis. Key regulators such as TBK1, TFEB, and mTORC1 orchestrate this process, and their dysregulation contributes to cancer, neurodegeneration, and lysosomal storage disorders. Understanding these mechanisms offers therapeutic opportunities, and CRISPR-based models are invaluable for dissecting the underlying pathways. EDITGENE provides comprehensive services to support research in this field.
References
- 1. Castagnino A et al.. 2018. Coronin 1C promotes triple-negative breast cancer invasiveness through regulation of MT1-MMP traffic and invadopodia function.. Oncogene 37(50):6425-6441 PMID: 30065298
- 2. Povroznik JM et al.. 2020. IL-27 regulation of innate immunity and control of microbial growth.. Future Sci OA 6(7):FSO588 PMID: 32802395
- 3. Saito T et al.. 2003. Negative feedback of T cell activation through inhibitory adapters and costimulatory receptors.. Immunol Rev 192:143-60 PMID: 12670402
- 4. Gant JC et al.. 2018. FK506-Binding Protein 12.6/1b, a Negative Regulator of [Ca(2+)], Rescues Memory and Restores Genomic Regulation in the Hippocampus of Aging Rats.. J Neurosci 38(4):1030-1041 PMID: 29255009
- 5. Wanner C et al.. 2018. European expert consensus statement on therapeutic goals in Fabry disease.. Mol Genet Metab 124(3):189-203 PMID: 30017653
- 6. Enrich C et al.. 2017. Annexin A6 in the liver: From the endocytic compartment to cellular physiology.. Biochim Biophys Acta Mol Cell Res 1864(6):933-946 PMID: 27984093
- 7. Herhaus L. 2026. TBK1 puts the brakes on IRGQ-mediated autophagy.. Autophagy PMID: 42576195
- 8. Remy D et al.. 2025. TFEB triggers a matrix degradation and invasion program in triple-negative breast cancer cells upon mTORC1 repression.. Dev Cell 60(7):1018-1035.e8 PMID: 39729986
