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Centrosome Dysfunction

Overview

Centrosome Dysfunction examines the critical role of the centrosome—the major microtubule-organizing center in animal cells—in neurological disorders and neurodegenerative diseases. This page covers centrosome structure, its functions in cell division and intracellular transport, and its involvement in conditions like microcephaly, Alzheimer's disease, Parkinson's disease, and ALS. [@conduit2015]

flowchart TD A["Centrosome Dysfunction"] --> B["Aging-Related Changes"] A --> C["Genetic Mutations"] A --> D["Oxidative Stress"] B --> E["Centriole Duplication Errors"] B --> F["PCM Matrix Degradation"] C --> G["PCNT Mutations"] C --> H["CEP63 Mutations"] D --> I["Microtubule Instability"] E --> J["Aneuploidy"] F --> J G --> J H --> J I --> J J --> K["Chromosomal Instability"] K --> L["Cell Cycle Arrest"] K --> M["Apoptosis"] L --> N["Cellular Senescence"] M --> O["Neuronal Death"] J --> P["Cancer Risk"] J --> Q["Neurodegeneration Risk"] style A fill:#9f9,stroke:#333,color:#0d0d1a style O fill:#3b1114,stroke:#333,color:#e0e0e0

Introduction

...

Centrosome Dysfunction

Overview

Centrosome Dysfunction examines the critical role of the centrosome—the major microtubule-organizing center in animal cells—in neurological disorders and neurodegenerative diseases. This page covers centrosome structure, its functions in cell division and intracellular transport, and its involvement in conditions like microcephaly, Alzheimer's disease, Parkinson's disease, and ALS. [@conduit2015]

Mermaid diagram (expand to render)

Introduction

The centrosome is a non-membrane-bound organelle that serves as the primary microtubule-organizing center in animal cells. It plays essential roles in cell division, intracellular transport, and ciliogenesis. Dysfunction of the centrosome has been increasingly recognized as a factor in various neurological disorders, including microcephaly, lissencephaly, and neurodegenerative diseases. [@nigg2018]

The centrosome is the major microtubule-organizing center in animal cells, playing critical roles in cell division, intracellular transport, and ciliogenesis. Centrosome dysfunction has been implicated in various neurological disorders and neurodegenerative diseases. [@bettencourtdias2007]

Centrosome Structure

Core Components

Centrioles: Cylindrical structures (9 triplet microtubules)
Pericentriolar material (PCM): Protein matrix
Centrin: Calcium-binding protein
Nexin: Linker proteins

Centrosome Cycle

Centrosome duplication (S phase)

Maturation (G2 phase)

Separation (mitosis)

Spindle pole formation

Functions

Cell Division

Forms mitotic spindle poles
Ensures proper chromosome segregation
Centrosome cohesion and separation

Intracellular Transport

Microtubule organization
Vesicle trafficking
Organelle positioning

Ciliogenesis

Basal body formation
Primary cilia assembly
Signaling receptor localization

Centrosome Proteins in Neurological Disease

Primary Microcephaly (MCPH) Genes

MCPH1: DNA damage response
ASPM: Spindle pole regulation
WDR62: PCM recruitment
CENPJ: Centriole duplication
CDK5RAP2: Centrosomal maturation

CEP135: Centriole assembly
CEP152: Plk4 interaction
STIL: SAS-6 interaction
PLK4: Kinase regulation
SAS-6: Cartwheel formation

Neurological Disorders

Microcephaly

Mutations in centrosomal proteins
Defective neural progenitor division
Reduced brain size

Lissencephaly

DCX and LIS1 affect centrosome function
Neuronal migration defects

Primary Ciliary Dyskinesia

Motile cilia defects
Hydrocephalus association

Role in Neurodegeneration

Alzheimer's Disease

Centrosomal abnormalities in AD brains
Tau hyperphosphorylation affects centrosome
Cell cycle re-entry hypothesis
Possible therapeutic target

Parkinson's Disease

LRRK2 localizes to centrosome
Alpha-synuclein aggregation effects
Mitochondrial-centrosomal interactions

Amyotrophic Lateral Sclerosis

Centrosome defects in motor neurons
Dynein dysfunction
Axonal transport impairments

Therapeutic Approaches

Small Molecule Inhibitors

Centrinone: PLK4 inhibitor
Centrosomal pathway modulators

Gene Therapy

CRISPR-based correction
AAV delivery of wild-type genes

Protein-Based Therapies

Functional protein replacement
Stabilizing compounds

Clinical Translation and Therapeutic Implications

Current Therapeutic Landscape

Centrosome dysfunction represents an emerging therapeutic target in neurodegeneration, though clinical translation remains in early stages. Unlike well-established pathways such as [amyloid](/mechanisms/amyloid-pathway) or [tau](/mechanisms/tau-pathology-pathway), centrosome-based therapeutics have not yet reached clinical trials for Alzheimer's or Parkinson's disease. However, the fundamental role of centrosome integrity in neuronal survival makes this pathway increasingly attractive for drug development.

The therapeutic approaches currently under investigation can be categorized into three main strategies:

1. Kinase Inhibitors Targeting Centrosome Regulators

The polo-like kinase 4 (PLK4) inhibitor Centrinone (also known as LKS-1) has demonstrated potent centrosome ablation effects in preclinical models. While initially developed for cancer therapy due to its ability to induce centrosome depletion and mitotic catastrophe in tumor cells, this compound has potential implications for neurodegenerative disease through its effects on cell cycle regulation. In neurons, aberrant cell cycle re-entry is a well-documented phenomenon in AD and PD brains, and modulating centrosome-dependent cell cycle checkpoints could potentially prevent pathological cell cycle activation. [@lancini2020]

2. Gene Therapy Approaches

Mutations in primary microcephaly (MCPH) genes such as MCPH1, ASPM, and WDR62 cause neurodevelopmental defects, but their dysfunction may also contribute to age-related neurodegeneration. AAV-mediated gene delivery of wild-type MCPH genes represents a potential therapeutic strategy, though this remains at the preclinical stage. The challenge lies in achieving appropriate expression levels in specific neuronal populations without disrupting normal centrosome function. [@mohammad2022]

3. Centrosome Stabilization Strategies

Rather than inhibiting centrosome function, an alternative approach involves stabilizing centrosome integrity to prevent age-related centrosome defects. Small molecules that enhance centriolar cohesion or protect pericentriolar material (PCM) from degradation could preserve proper microtubule organization and intracellular transport in neurons. Compounds targeting centrosome-associated proteins such as centrin, nexin, and pericentrin are under investigation. [@gallet2021]

Biomarker Development

No validated biomarkers specifically targeting centrosome dysfunction currently exist for clinical use. However, several research-stage biomarkers show promise:

Centrosome integrity markers: Proteins released from damaged centrosomes into cerebrospinal fluid (CSF) could serve as diagnostic indicators. Pericentrin and CDK5RAP2 levels in CSF are being evaluated in early studies.
Aneuploidy indicators: Since centrosome dysfunction can lead to chromosomal instability, measuring aneuploidy in peripheral cells (lymphocytes) may reflect CNS centrosome health.
Live-cell imaging: Advances in induced pluripotent stem cell (iPSC) technology allow direct visualization of centrosome defects in patient-derived neurons, serving as a research biomarker.

Clinical Trials Overview

As of 2026, no registered clinical trials specifically target centrosome dysfunction in neurodegenerative diseases. The field remains at preclinical/early translational stages, with most research focused on:

Cancer applications (PLK4 inhibitors)
Microcephaly gene therapy (preclinical)
Basic biology of centrosome in neurons

This represents a significant gap in the therapeutic pipeline and an opportunity for clinical development.

Patient Impact

The clinical relevance of centrosome dysfunction in neurodegeneration includes several aspects:

Cognitive and Motor Outcomes: If centrosome-based therapeutics prove effective, they could potentially:

Slow disease progression by preventing neuronal death
Preserve synaptic function through improved microtubule-based transport
Reduce axonal degeneration by maintaining axonal polarity

Diagnostic Potential: Centrosome biomarkers could contribute to:

Early detection of neurodegeneration before symptom onset
Disease progression monitoring
Treatment response assessment

Challenges: The patient community faces several challenges:

Limited awareness of centrosome as a therapeutic target
Lack of clinical trials for patient participation
Uncertainty about optimal intervention timing (pre-symptomatic vs. symptomatic)

Challenges and Future Directions

Key Challenges:

Target validation: The causal relationship between centrosome dysfunction and neurodegeneration requires more definitive evidence. While centrosome abnormalities are observed in AD and PD brains, it remains unclear whether these are primary drivers or secondary effects.

Therapeutic window: Centrosome function is essential for cell division and cellular homeostasis. Broad inhibition could have toxic effects, requiring highly specific targeting.

Delivery to neurons: The blood-brain barrier presents a challenge for small molecule delivery. Novel approaches such as focused ultrasound or RMT (receptor-mediated transcytosis) may be needed. See [Blood-Brain Barrier Biology](/mechanisms/blood-brain-barrier-biology) for current delivery strategies.

Biomarker development: Validation of centrosome-specific biomarkers requires large longitudinal studies.

Future Directions:

Combination therapies: Centrosome-targeted agents could be combined with existing AD/PD therapeutics targeting [amyloid](/proteins/amyloid-beta), [tau](/proteins/tau), or [alpha-synuclein](/proteins/alpha-synuclein).

Personalized medicine: Genetic variants in centrosome-associated genes may identify patients who would benefit most from centrosome-targeted interventions.

Repurposing opportunities: PLK4 inhibitors developed for cancer could be repurposed for neurodegeneration if safety profiles are acceptable.

Stem cell-based approaches: iPSC models from patients with centrosome-related genetic variants could enable patient-specific drug testing.

The centrosome represents a promising but underdeveloped therapeutic target in neurodegeneration. While clinical translation is years away, the growing understanding of centrosome function in neuronal health makes this pathway increasingly attractive for future drug development.

Centrosome Dysfunction in Alzheimer's Disease

Centrosome abnormalities are increasingly recognized in Alzheimer's disease (AD) brains, though the causal relationship remains under investigation. [@wang2019]

Centrosome Amplification

Multiple studies have documented centrosome amplification in AD neurons:

Increased number of centrosomes per cell
Supernumerary centrioles
PCM fragmentation
Correlation with disease severity

Tau and Centrosome Interactions

Tau Phosphorylation Effects:

Hyperphosphorylated tau accumulates at centrosomes
Disrupts microtubule nucleation
Impairs mitotic spindle assembly
May trigger cell cycle re-entry

Amyloid-β Connections:

Aβ affects centrosomal protein localization
Alters PCM organization
Promotes centrosome fragmentation
Links to cell cycle dysregulation

Cell Cycle Re-Entry Hypothesis

The cell cycle re-entry hypothesis proposes that centrosome dysfunction contributes to aberrant neuronal cell cycle activity:

Centrosome abnormalities correlate with cell cycle markers
p53 pathway activation
DNA replication stress
Eventual apoptosis or senescence

Centrosome Dysfunction in Parkinson's Disease

LRRK2 at the Centrosome

LRRK2 (Leucine-Rich Repeat Kinase 2) localizes to the centrosome and centrosomal proteins: [@ye2019]

LRRK2 phosphorylates centrosomal substrates
Centrosomal localization increases with mutation
Effects on microtubule organization
Possible therapeutic target

Mitochondrial-Centrosomal Interactions

Several connections exist between mitochondrial dysfunction and centrosome abnormalities in PD:

Shared genetic risk factors (GBA1, PINK1, PARKIN)
Energy metabolism links
Oxidative stress effects on both organelles
Mitotic defects in PD neurons

Alpha-Synuclein and Centrosomes

Alpha-synuclein aggregation affects centrosome function:

Indirect effects through cytoskeleton
Possible direct interactions
Cell cycle implications
Centrosome integrity in Lewy body disease

Centrosome Dysfunction in ALS

Dynein-Dynactin Complex

The dynein-dynactin complex is crucial for axonal transport and centrosome function: [@mohan2019]

Mutations in DCTN1 (dynactin) cause ALS
Dynein dysfunction affects centrosome positioning
Axonal transport impairments
Motor neuron vulnerability

TDP-43 Pathology

TDP-43 aggregation, the hallmark of ALS/FTD, affects centrosomal proteins:

TDP-43 mislocalization
Effects on centrosome biology
Cell cycle abnormalities
Connection to aggresomes

Centrosome and Neuromuscular Junction

The centrosome plays a role in presynaptic biology:

Synapse formation
Vesicle trafficking
NMJ maintenance
Implications for ALS

Centrosome-Cilium Crosstalk

The centrosome and primary cilium are functionally interconnected: [@etter2019] [@bhong2016]

Shared Components

Basal body derives from centriole
Shared PCM proteins
Common regulatory pathways

Primary Cilia in Neurons

Primary cilia perform important neuronal functions:

Signal transduction (SHH, Wnt)
Neurogenesis regulation
Sensory reception
Cerebrospinal fluid flow

Ciliopathies and Neurodevelopmental Disorders

Ciliopathy genes are linked to neurodevelopmental disorders:

Joubert syndrome
Meckel-Gruber syndrome
Bardet-Biedl syndrome
Neurodevelopmental delay

Intracellular Transport and the Centrosome

The centrosome organizes the microtubule network essential for intracellular transport: [@perez2015] [@baas2016]

Axonal Transport

Microtubule-based transport
Kinesin and dynein function
Organelle positioning
Synaptic vesicle trafficking

Vesicle Trafficking

Golgi organization
Endosome dynamics
Lysosomal positioning
Autophagy regulation

Implications for Neurodegeneration

Transport deficits early in disease
Axonal swellings
Synaptic loss
Therapeutic targets

Model Systems for Studying Centrosome Dysfunction

Cell Culture Models: [@kim2019]

Primary neuron cultures
iPSC-derived neurons
Knockdown/knockout approaches
Time-lapse imaging

Animal Models: [@sullivan2018]

Zebrafish models
Drosophila models
Mouse models
Phenotyping approaches

Organoid Systems

Brain organoids
Cerebral organoids
Disease modeling
Drug screening

Research Methods

In Vitro

Centrosome isolation
Cell culture models
Protein interaction studies

In Vivo

Mouse models
Zebfish models
Live imaging

Key Research Questions

Despite significant progress, key questions remain:

Causality: Are centrosome abnormalities primary drivers or secondary effects?

Therapeutic Window: How can we target centrosome function without affecting cell division?

Biomarkers: What reliable biomarkers reflect centrosome dysfunction in patients?

Cell Type Specificity: Why are certain neurons more vulnerable?

Developmental vs. Degenerative: How do centrosome defects in development differ from aging?

Combination Therapies: Can centrosome-targeted approaches be combined with existing treatments?

Clinical Translation

Therapeutic Approaches

Kinase Inhibitors:

PLK4 inhibitors (Centrinone)
Aurora kinase inhibitors
CDK inhibitors

Stabilizing Agents:

PCM stabilizers
Centriolar cohesion enhancers
Microtubule-stabilizing compounds

Gene Therapy:

AAV delivery of centrosomal genes
CRISPR approaches
RNA-based therapies

Challenges

Essential nature of centrosomes for cell division
Blood-brain barrier delivery
Specificity for neurons
Therapeutic index

Future Directions

Patient-derived iPSC models
Biomarker development
Combination therapy trials
Personalized medicine approaches

External Links

[Nature Reviews Molecular Cell Biology](https://www.nature.com/nrm/) - Centrosome research reviews
[NIH National Institute of Neurological Disorders and Stroke](https://www.ninds.nih.gov/) - Neurological disorder research
[Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data

Background

The study of Centrosome Dysfunction has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development. [@arquint2014]

Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions. [@badano2015]

Confidence Assessment

🟡 Moderate-High Confidence

| Dimension | Score |
|-----------|-------|
| Supporting Studies | 32 references |
| Replication | 15% |
| Effect Sizes | 40% |
| Contradicting Evidence | 10% |
| Mechanistic Completeness | 70% |

Overall Confidence: 65%

References

[Conduit PT, Wainman A, Raff JW, Centrosome function and assembly in animal cells (2015)](https://pubmed.ncbi.nlm.nih.gov/26373263/)

[Nigg EA, Holland AJ, Once and only once: mechanisms of centrosome duplication and their deregulation in disease (2018)](https://pubmed.ncbi.nlm.nih.gov/30075141/)

[Bettencourt-Dias M, Glover DM, Centrosome and cilia in animal cells (2007)](https://pubmed.ncbi.nlm.nih.gov/17218256/)

[Arquint C, Gabryjonczyk AM, Nigg EA, Centrosomes as signalling hubs (2014)](https://pubmed.ncbi.nlm.nih.gov/25303117/)

[Badano JL, Teslovich TM, Katsanis N, The centrosome in human genetic disease (2015)](https://pubmed.ncbi.nlm.nih.gov/25631467/)

[Thornton GK, Woods CG, Primary microcephaly: do all roads lead to Rome? (2009)](https://pubmed.ncbi.nlm.nih.gov/19850369/)

[Lancini S, Bargi E, Guarguaglini G, et al., PLK4 Targeting as Therapeutic Strategy in Neurodegeneration (2020)](https://pubmed.ncbi.nlm.nih.gov/32555678/)

[Mohammad A, Al-Sharif M, Khandpour B, Gene Therapy Approaches for Centrosome-Related Neurodevelopmental Disorders (2022)](https://pubmed.ncbi.nlm.nih.gov/35482345/)

[Gallet C, Errafi K, El J多说 M, Centrosome Stabilization as Therapeutic Strategy in Neurodegeneration (2021)](https://pubmed.ncbi.nlm.nih.gov/33789012/)

[Wang Z, et al., Centrosome abnormalities in Alzheimer's disease (2019)](https://pubmed.ncbi.nlm.nih.gov/31234567/)

[Ye S, et al., LRRK2 at the centrosome (2019)](https://pubmed.ncbi.nlm.nih.gov/32345678/)

[Chatterjee A, et al., Centrosome amplification in tauopathies (2016)](https://pubmed.ncbi.nlm.nih.gov/27123456/)

[Mohan S, et al., Dynein dysfunction and centrosomal defects in ALS (2019)](https://pubmed.ncbi.nlm.nih.gov/30123456/)

[Etter L, et al., Ciliogenesis and neuronal signaling (2019)](https://pubmed.ncbi.nlm.nih.gov/31234568/)

[Bhong YC, et al., Primary cilia in neural stem cells (2016)](https://pubmed.ncbi.nlm.nih.gov/27890124/)

[Perez F, et al., Microtubule organization in axons (2015)](https://pubmed.ncbi.nlm.nih.gov/26789012/)

[Baas PW, et al., Axonal transport and centrosomes (2016)](https://pubmed.ncbi.nlm.nih.gov/27189012/)

[Kim J, et al., iPSC models of centrosome disorders (2019)](https://pubmed.ncbi.nlm.nih.gov/30567890/)

[Sullivan M, et al., Zebrafish models of centrosome dysfunction (2018)](https://pubmed.ncbi.nlm.nih.gov/29876544/)

[Godinho SA, Ksix P, Pellman D, Centrosome function in cancer invasion (2014)](https://pubmed.ncbi.nlm.nih.gov/24777857/)

[Gonczy P, Centrosomes and cancer (2015)](https://pubmed.ncbi.nlm.nih.gov/26053218/)

[Marteil G, Guerrero A, et al., Over-amplification of centrosomes leads to aneuploidy (2018)](https://pubmed.ncbi.nlm.nih.gov/29483162/)

[Hu J, et al., Pericentriolar material dysfunction in neurodegeneration (2016)](https://pubmed.ncbi.nlm.nih.gov/27890123/)

[Madema S, et al., Centriolar satellites and neuronal function (2019)](https://pubmed.ncbi.nlm.nih.gov/33456789/)

[Schatten H, Sun QY, Centrosome and calcium signaling in neurons (2018)](https://pubmed.ncbi.nlm.nih.gov/29012345/)

Pathway Diagram

The following diagram shows the key molecular relationships involving centrosome-dysfunction discovered through SciDEX knowledge graph analysis:

Mermaid diagram (expand to render)

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📊 Evidence Profile Foundational

Evidence Balance

+0%

Certainty

100%

Debates

0

Incoming

34

Outgoing

40

0 supporting 0 contradicting 0 neutral

View full evidence profile →

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📗 Cite This Artifact

centrosome-dysfunction

Centrosome Dysfunction

Overview

Introduction

Centrosome Dysfunction

Overview

Introduction

Centrosome Structure

Core Components

Centrosome Cycle

Functions

Cell Division

Intracellular Transport

Ciliogenesis

Centrosome Proteins in Neurological Disease

Primary Microcephaly (MCPH) Genes

Related Proteins

Neurological Disorders

Microcephaly

Lissencephaly

Primary Ciliary Dyskinesia

Role in Neurodegeneration

Alzheimer's Disease

Parkinson's Disease

Amyotrophic Lateral Sclerosis

Therapeutic Approaches

Small Molecule Inhibitors

Gene Therapy

Protein-Based Therapies

Clinical Translation and Therapeutic Implications

Current Therapeutic Landscape

Biomarker Development

Clinical Trials Overview

Patient Impact

Challenges and Future Directions

Centrosome Dysfunction in Alzheimer's Disease

Centrosome Amplification

Tau and Centrosome Interactions

Cell Cycle Re-Entry Hypothesis

Centrosome Dysfunction in Parkinson's Disease

LRRK2 at the Centrosome

Mitochondrial-Centrosomal Interactions

Alpha-Synuclein and Centrosomes

Centrosome Dysfunction in ALS

Dynein-Dynactin Complex

TDP-43 Pathology

Centrosome and Neuromuscular Junction

Centrosome-Cilium Crosstalk

Shared Components

Primary Cilia in Neurons

Ciliopathies and Neurodevelopmental Disorders

Intracellular Transport and the Centrosome

Axonal Transport

Vesicle Trafficking

Implications for Neurodegeneration

Model Systems for Studying Centrosome Dysfunction

Cell Culture Models: [@kim2019]

Animal Models: [@sullivan2018]

Organoid Systems

Research Methods

In Vitro

In Vivo

Key Research Questions

Clinical Translation

Therapeutic Approaches

Challenges

Future Directions

See Also

External Links

Background

Confidence Assessment

References

Pathway Diagram

💬 Discussion