VIM Gene

VIM — Vimentin

Pathway Diagram

```mermaid
flowchart TD
VIM["VIM<br/>(Vimentin)"]

%% Autophagy pathway
BECN1["BECN1<br/>(Beclin-1)"]
MAP1LC3B["MAP1LC3B<br/>(LC3B)"]
ATG14["ATG14<br/>(Autophagy Protein)"]
PIK3C3["PIK3C3<br/>(VPS34)"]
UVRAG["UVRAG<br/>(Autophagy Regulator)"]
LAMP1["LAMP1<br/>(Lysosomal Protein)"]
Autophagy["Autophagy<br/>Pathway"]

%% Protein degradation
UPS["Ubiquitin-Proteasome<br/>System"]
HDAC6["HDAC6<br/>(Histone Deacetylase)"]

%% Cellular stress
H2AX["H2AX<br/>(DNA Damage Marker)"]
MAP3K5["MAP3K5<br/>(ASK1 Kinase)"]

%% Disease outcomes
Inflammation["Neuroinflammation"]
Senescence["Cellular<br/>Senescence"]
ALS["Amyotrophic Lateral<br/>Sclerosis (ALS)"]
PD["Parkinson's<br/>Disease"]
MS["Multiple<br/>Sclerosis"]

%% Connections
VIM -->|"regulates"| BECN1
VIM -->|"regulates"| ATG14
VIM -->|"regulates"| Autophagy
VIM -->|"associated with"| MAP1LC3B
VIM -->|"associated with"| PIK3C3
VIM -->|"associated with"| UVRAG
VIM -->|"associated with"| LAMP1
VIM -->|"regulates"| UPS
VIM -->|"associated with"| HDAC6
VIM -->|"regulates"| H2AX
VIM -->|"associated with"| MAP3K5

BECN1 -->|"initiates"| Autophagy
ATG14 -->|"promotes"| Autophagy
MAP1LC3B -->|"mediates"| Autophagy
PIK3C3 -->|"activates"| Autophagy
UVRAG -->|"regulates"| Autophagy
LAMP1 -->|"completes"| Autophagy

VIM -->|"biomarker for"| Inflammation
VIM -->|"biomarker for"| Senescence
VIM -->|"biomarker for"

VIM — Vimentin

Pathway Diagram

Overview

Vim Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Introduction

VIM (Vimentin) encodes a type III intermediate filament protein that is one of the most widely expressed structural proteins in eukaryotic cells. While classically associated with mesenchymal cells, vimentin plays important roles in neuronal function, glial biology, and has been increasingly recognized in neurodegenerative disease pathogenesis. [@goldman2012]

<div class="infobox infobox-gene"> [@raff2010]
<table> [@julien2009]
<tr><th colspan="2" style="background:#e8f4f8; text-align:center; font-size:1.1em;">Vimentin</th></tr> [@vogel2020]
<tr><td><strong>Gene Symbol</strong></td><td>VIM</td></tr>
<tr><td><strong>Full Name</strong></td><td>Vimentin</td></tr>
<tr><td><strong>Chromosome</strong></td><td>10p13</td></tr>
<tr><td><strong>NCBI Gene ID</strong></td><td>[7431](https://www.ncbi.nlm.nih.gov/gene/7431)</td></tr>
<tr><td><strong>OMIM</strong></td><td>193060</td></tr>
<tr><td><strong>Ensembl ID</strong></td><td>ENSG00000026025</td></tr>
<tr><td><strong>UniProt ID</th><td>[P08670](https://www.uniprot.org/uniprot/P08670)</td></tr>
<tr><td><strong>Associated Diseases</strong></td><td>[Alzheimer's Disease](/diseases/alzheimer's-disease), [Parkinson's Disease](/diseases/parkinson's-disease), [ALS](/diseases/als), Cataracts</td></tr>
</table>
</div>

Gene Structure and Protein

The VIM gene spans approximately 9 kb on chromosome 10p13 and consists of 9 exons encoding a 466-amino acid protein with a molecular weight of ~57 kDa. The protein contains:

• An N-terminal "head" domain (variable length, ~80 residues)
• A central alpha-helical rod domain (~310 residues)
• A C-terminal "tail" domain (~60 residues)

Normal Physiological Function

Vimentin intermediate filaments serve multiple essential cellular functions:

Cytoskeletal Structure

• Provides mechanical integrity to the cytoplasm
• Maintains organelle positioning (mitochondria, nucleus)
• Supports cell shape and polarity

Cell Migration and Dynamics

• Facilitates cell motility by providing a scaffold for force generation
• Participates in wound healing and developmental migration
• Regulates membrane trafficking events

Signaling Platform

• Serves as a scaffold for signaling molecules (PKC, ERK, JNK)
• Interfaces with the actin cytoskeleton via plectin
• Modulates cell survival signaling pathways

Neuronal Expression

• Developing neurons (migration scaffold)
• Reactive astrocytes in the adult CNS
• Certain neuronal populations under specific conditions
• Neural crest derivatives

Role in Neurodegenerative Diseases

Alzheimer's Disease (AD)

Vimentin is prominently involved in AD pathogenesis through several mechanisms:

Neurofibrillary Tangle Formation
Vimentin is incorporated into abnormal filamentous inclusions in AD brains. The protein undergoes post-translational modifications (hyperphosphorylation, oxidation) that promote aggregation. These vimentin-positive inclusions colocalize with [tau](/proteins/tau) pathology, suggesting a shared mechanism of intermediate filament dysfunction in AD [1].

Glial Activation
Reactive astrocytes expressing vimentin surround amyloid plaques in AD brains. This glial response may be both protective (clearance) and pathological (inflammatory cytokine release). Vimentin-positive astrocytes show increased [GFAP](/entities/gfap) expression, marking the transition to a reactive phenotype [2].

Axonal Transport Defects
Vimentin dysfunction may contribute to axonal transport impairments in AD. The filament network normally supports organelle motility; its disruption could exacerbate [amyloid-beta](/proteins/amyloid-beta)-induced transport deficits.

Parkinson's Disease (PD)

In PD, vimentin pathology is less prominent than in AD but still relevant:

Glial Activation
Vimentin-positive glia are elevated in the substantia nigra of PD patients. This reflects ongoing neuroinflammation, with vimentin serving as a marker of activated [microglia](/entities/microglia) and astrocytes [3].

Potential Lewy Body Involvement
Some studies report vimentin in Lewy bodies, the characteristic [alpha-synuclein](/mechanisms/alpha-synuclein) inclusions of PD. This suggests vimentin may be recruited into protein aggregates during disease progression.

Amyotrophic Lateral Sclerosis (ALS)

Intermediate Filament Accumulation
ALS features accumulation of neurofilament proteins; vimentin is often co-deposited in these aggregates. Mutations in [neurofilament light](/biomarkers/neurofilament-light-chain-nfl) chain (NEFL) and other intermediate filament genes cause ALS-like syndromes [4].

Astrocytic Reactivity
Vimentin-expressing astrocytes are prominent in ALS spinal cord. This reactive gliosis precedes motor neuron death and may contribute to disease spread.

Therapeutic Implications

Vimentin represents a potential therapeutic target:

Expression Patterns

| Tissue/Cell Type | Expression Level | Notes |
|------------------|-----------------|-------|
| Fibroblasts | High | Primary expression site |
| Endothelial Cells | Moderate | Vascular cells |
| [Astrocytes](/entities/astrocytes) | Low (baseline), High (reactive) | Disease-associated |
| Schwann Cells | Moderate | Peripheral nerve |
| [Neurons](/entities/neurons) | Very Low | Mainly developmental |

Interactions

Vimentin interacts with numerous proteins:

• Plectin: Links vimentin to actin and microtubules
• Protein kinase C (PKC): Vimentin is a PKC substrate
• 14-3-3 proteins: Bind phosphorylated vimentin
• Grim19: Mitochondrial vimentin anchoring
• LKB1: Vimentin-dependent cell polarity

Animal Models

Vimentin knockout mice are viable but show:

• Impaired wound healing
• Reduced fibroblast migration
• Altered astrocyte responses to injury
• Increased susceptibility to some toxins

Key Publications

See Also

• [VIM Protein](/proteins/vim-protein)
• [Intermediate Filaments](/mechanisms/neurofilaments)
• [Alzheimer's Disease](/diseases/alzheimers-disease)
• [Parkinson's Disease](/diseases/parkinsons-disease)
• [ALS](/diseases/als)
• [Astrocytes](/cell-types/astrocytes)
• [Glial Activation](/mechanisms/neuroinflammation)

Overview

Vim Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Background

The study of Vim Gene 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.

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

External Links

• [PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
• [Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
• [Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data

Allen Brain Atlas Data

Gene Expression

• Hippocampus - Moderate expression in astrocytes and ependymal cells
• Cerebral cortex - Moderate expression in astrocytes, low in neurons
• Cerebellum - Moderate expression in Bergmann glia and astrocytes
• Olfactory bulb - High expression in astrocytes
• White matter - High expression in astrocytes and oligodendrocyte precursors
• Substantia nigra - Moderate expression in astrocytes

Single-Cell Expression

• Astrocytes - Primary expression site in brain
• Oligodendrocyte precursor cells (OPCs)
• Ependymal cells
• Bergmann glia (cerebellum)
• Low or absent in mature neurons

Expression Specificity

• Highly astrocyte-specific intermediate filament protein
• Expressed in glial cells, not neurons
• Marker for reactive astrocytes in neurodegeneration
• Widely used as a marker for mesenchymal stem cells
• Not brain-specific (also expressed in fibroblasts, endothelial cells, leukocytes)

References

Pathway Diagram

The following diagram shows the key molecular relationships involving VIM Gene discovered through SciDEX knowledge graph analysis: