TNKS Gene

TNKS — Tankyrase 1

Introduction

Tnks Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

Overview

Tankyrase 1 (TNKS) is a poly(ADP-ribose) polymerase (PARP) family member that regulates Wnt signaling, telomere maintenance, mitotic spindle assembly, and protein degradation. It is also known as PARP5A and plays important roles in cellular homeostasis, development, and disease. TNKS is encoded by the TNKS gene located on chromosome 8p23.1. [@guettler2021]

TNKS — Tankyrase 1

Introduction

Tnks Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

Overview

Tankyrase 1 (TNKS) is a poly(ADP-ribose) polymerase (PARP) family member that regulates Wnt signaling, telomere maintenance, mitotic spindle assembly, and protein degradation. It is also known as PARP5A and plays important roles in cellular homeostasis, development, and disease. TNKS is encoded by the TNKS gene located on chromosome 8p23.1. [@guettler2021]

<div class="infobox infobox-gene"> [@sbodio2020]
<table> [@cook2019]
<tr><th colspan="2" style="background:#e8f4ea;">Gene Information</th></tr> [@yang2018]
<tr><td><strong>Gene Symbol</strong></td><td>TNKS</td></tr> [@bordin2020]
<tr><td><strong>Full Name</strong></td><td>Tankyrase 1</td></tr> [@tian2022]
<tr><td><strong>Alternative Names</strong></td><td>TANK1, PARP5A</td></tr> [@haikarainen2020]
<tr><td><strong>Chromosomal Location</strong></td><td>8p23.1</td></tr>
<tr><td><strong>NCBI Gene ID</strong></td><td>8658</td></tr>
<tr><td><strong>OMIM ID</strong></td><td>607303</td></tr>
<tr><td><strong>Ensembl ID</strong></td><td>ENSG00000142208</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>Q9Y5X5</td></tr>
<tr><td><strong>Protein</strong></td><td>Tankyrase 1 Protein</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/aging" style="color:#ef9a9a">Aging</a>, <a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/atherosclerosis" style="color:#ef9a9a">Atherosclerosis</a>, <a href="/wiki/cardiovascular" style="color:#ef9a9a">Cardiovascular</a>, <a href="/wiki/diabetes" style="color:#ef9a9a">Diabetes</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">16 edges</a></td>
</tr>
</table>
</div>

Gene Structure

The TNKS gene spans approximately 35 kb and consists of 23 exons encoding a 1327 amino acid protein. The gene structure includes:

• Multiple ankyrin repeat clusters (shared with TNKS2)
• Sterile alpha motif (SAM) domains
• Catalytic PARP domain
• Regulatory regions

Expression Pattern

Normal Tissues

• Ubiquitously expressed at low levels
• Higher expression in proliferating cells
• Detectable in most human tissues

Brain Expression

• Expressed in various brain regions
• Higher expression during development
• Present in [neurons](/entities/neurons) and glial cells
• Functions in neuronal development

Cancer

• Frequently overexpressed in tumors
• Associated with poor prognosis
• Tumor-type specific patterns

Normal Function

Wnt/β-Catenin Signaling

Tankyrase 1 is a key regulator of canonical Wnt signaling:

Telomere Maintenance

TNKS plays critical roles in telomere biology:

• TRF1 PARylation: PARylates telomeric repeat binding factor 1 (TRF1)
• Telomere elongation: Promotes telomere lengthening through telomerase
• Telomere protection: Controls shelterin complex function
• Telomere replication: Aids in telomere DNA replication

Mitotic Spindle Assembly

During cell division, TNKS:

• Localizes to spindle poles
• Regulates microtubule dynamics
• Ensures proper chromosome segregation
• Controls spindle assembly checkpoint

Protein Degradation

TNKS links PARylation to ubiquitination:

• Controls stability of various substrates
• Participates in protein quality control
• Regulates degradation through proteasome

Disease Associations

Cancer

TNKS is oncogenic in many cancers:

• Overexpression: Frequently elevated in colorectal, breast, lung, and ovarian cancers
• Oncogenic pathways: Promotes proliferation through Wnt activation
• Metastasis: Supports invasive behavior
• Therapeutic target: Tankyrase inhibitors in clinical development

Neurodegeneration

Emerging roles in brain diseases:

• Wnt signaling dysregulation: Implicated in Alzheimer's and Parkinson's disease pathogenesis
• Protein quality control: Potential roles in clearing misfolded proteins
• Telomere biology: May affect neuronal aging

Other Conditions

• Metabolic disorders: Associations with diabetes and obesity
• Developmental disorders: Roles in embryonic development

Therapeutic Implications

| Approach | Agent | Stage | Application |
|----------|-------|-------|-------------|
| Tankyrase inhibition | XAV939 | Preclinical | Dual TNKS1/TNKS2 |
| Small molecule | IWR compounds | Preclinical | Wnt-driven cancers |
| Combination | Tankyrase + chemotherapy | Clinical trials | Resistant tumors |
| Selective targeting | Novel inhibitors | Development | Improved specificity |

Clinical Trials

• Multiple tankyrase inhibitors in Phase I/II trials
• Focus on Wnt-driven cancers
• Combination strategies being explored

Animal Models

• TNKS knockout mice are embryonic lethal
• Heterozygous mice show reduced tumor formation
• Conditional knockouts reveal tissue-specific functions
• Transgenic models for cancer research

See Also

• [TNKS Protein](/proteins/tnks-protein)
• [TNKS2 Gene](/proteins/tnks2-protein)
• [Wnt Signaling Pathway](/mechanisms/wnt-signaling)
• [PARP Proteins](/entities/parp-proteins)
• [Telomere Biology](/entities/telomere-biology)
• [Tankyrase Inhibitors](/therapeutics/tankyrase-inhibitors)
• [Colorectal Cancer](/diseases/colorectal-cancer)

External Links

• [NCBI Gene: TNKS](https://www.ncbi.nlm.nih.gov/gene/8658)
• [OMIM: TNKS](https://www.omim.org/entry/607303)
• [UniProt: Q9Y5X5](https://www.uniprot.org/uniprot/Q9Y5X5)
• [Ensembl: TNKS](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000142208)
• [PubMed: TNKS](https://pubmed.ncbi.nlm.nih.gov/?term=tankyrase+TNKS)

Background

The study of Tnks 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.

References

Pathway Diagram

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