Entity Detail — Knowledge Graph Node
This page aggregates everything SciDEX knows about P21: its mechanistic relationships (Knowledge Graph edges), hypotheses targeting it, analyses mentioning it, and supporting scientific papers. The interactive graph below shows its immediate neighbors. All content is AI-synthesized from peer-reviewed literature.
P21 is a concept in neurodegeneration research. Key relationships include: activates, regulates, expressed in. Associated with ALS, Aging, Als. Connected to 289 entities in the SciDEX knowledge graph.
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| Name | P21 |
| Key Genes/Proteins | ACTB, Actin, ADNP, AGING, AIF, AKT |
| Related Diseases | Aging, Als, ALS, Alzheimer |
| Related Pathways | Akt |
Knowledge base pages for this entity
graph TD
P21["P21"]
P21 -->|"activates"| senescence["senescence"]
P21 -->|"regulates"| cellular_senescence["cellular senescence"]
P21 -->|"activates"| Aging["Aging"]
P21 -->|"regulates"| ALS["ALS"]
P21 -->|"inhibits"| Senescence["Senescence"]
P21 -->|"regulates"| Inflammation["Inflammation"]
P21 -->|"inhibits"| Tumor["Tumor"]
P21 -->|"inhibits"| Cancer["Cancer"]
P21 -->|"activates"| Ms["Ms"]
P21 -->|"activates"| Als["Als"]
P21 -->|"activates"| Depression["Depression"]
PRDM4["PRDM4"] -->|"upregulates"| P21
PRKCH["PRKCH"] -->|"regulates"| P21
APOPTOSIS["APOPTOSIS"] -->|"activates"| P21
AND["AND"] -->|"activates"| P21
TERC["TERC"] -->|"regulates"| P21
GENES["GENES"] -->|"regulates"| P21
CYTOKINES["CYTOKINES"] -->|"regulates"| P21
DNA["DNA"] -->|"inhibits"| P21
AMPK["AMPK"] -->|"activates"| P21
ATP["ATP"] -->|"activates"| P21
OXIDATIVE_STRESS["OXIDATIVE STRESS"] -->|"activates"| P21| Target | Relation | Type | Str |
|---|---|---|---|
| Als | activates | disease | 1.00 |
| Aging | activates | disease | 1.00 |
| Oxidative Stress | activates | pathway | 0.90 |
| Senescence | regulates | disease | 0.85 |
| Senescence | activates | disease | 0.85 |
| Cancer | activates | disease | 0.85 |
| Tumor | activates | disease | 0.85 |
| senescence | activates | pathway | 0.80 |
| BCL-2 | upstream_of | protein | 0.80 |
| senescent cells | expressed_in | cell_type | 0.80 |
| Cell Cycle | activates | pathway | 0.80 |
| Apoptosis | activates | pathway | 0.80 |
| Lung Cancer | therapeutic_target | disease | 0.75 |
| Cancer | therapeutic_target | disease | 0.75 |
| Als | therapeutic_target | disease | 0.75 |
| Tumor | inhibits | disease | 0.75 |
| Inflammation | regulates | disease | 0.75 |
| Cancer | expressed_in | disease | 0.75 |
| Cell Cycle | inhibits | pathway | 0.70 |
| cellular senescence | regulates | process | 0.70 |
| Mtor | regulates | pathway | 0.70 |
| MTOR | regulates | gene | 0.70 |
| Alzheimer | inhibits | disease | 0.65 |
| Parkinson | inhibits | disease | 0.65 |
| Obesity | activates | disease | 0.65 |
| Als | inhibits | disease | 0.65 |
| Sarcopenia | treats | disease | 0.65 |
| Aging | treats | disease | 0.65 |
| Ataxia | activates | disease | 0.65 |
| Als | treats | disease | 0.65 |
| Parkinson | activates | disease | 0.65 |
| Alzheimer | activates | disease | 0.65 |
| Depression | regulates | disease | 0.65 |
| Senescence | expressed_in | disease | 0.65 |
| Fibrosis | activates | disease | 0.65 |
| ALS | inhibits | disease | 0.65 |
| Inflammation | biomarker_for | disease | 0.65 |
| Carcinoma | therapeutic_target | disease | 0.65 |
| Inflammation | activates | disease | 0.65 |
| Cancer | regulates | disease | 0.65 |
| Depression | activates | disease | 0.65 |
| Glioblastoma | activates | disease | 0.65 |
| Breast Cancer | contributes_to | disease | 0.65 |
| Glioblastoma | expressed_in | disease | 0.65 |
| Ms | activates | disease | 0.65 |
| Viral Infection | activates | disease | 0.65 |
| Tumor | regulates | disease | 0.65 |
| Tumor | therapeutic_target | disease | 0.65 |
| Senescence | inhibits | disease | 0.65 |
| Cancer | associated_with | disease | 0.65 |
| Source | Relation | Type | Str |
|---|---|---|---|
| P53 | regulates | gene | 1.00 |
| AGING | activates | gene | 0.90 |
| OXIDATIVE STRESS | activates | gene | 0.90 |
| Polygonatum sibiricum polysaccharide | downregulates | compound | 0.85 |
| PRDM4 | upregulates | gene | 0.80 |
| Polygonatum Sibiricum Polysaccharide | downregulates | compound | 0.80 |
| APOPTOSIS | activates | gene | 0.80 |
| CANCER | activates | gene | 0.80 |
| P53 | activates | gene | 0.80 |
| P53 | inhibits | gene | 0.80 |
| GENES | expressed_in | gene | 0.80 |
| DNA | activates | gene | 0.80 |
| GAL | activates | gene | 0.70 |
| AMPK | activates | gene | 0.70 |
| CANCER | expressed_in | gene | 0.70 |
| GENES | inhibits | gene | 0.70 |
| PRKCH | regulates | gene | 0.70 |
| CANCER | therapeutic_target | gene | 0.70 |
| BAX | expressed_in | gene | 0.70 |
| SQSTM1 | regulates | gene | 0.70 |
| GENES | regulates | gene | 0.70 |
| BCL-2 | expressed_in | gene | 0.70 |
| P16 | regulates | gene | 0.70 |
| P62 | regulates | gene | 0.70 |
| CDKN1A | inhibits | gene | 0.70 |
| INFLAMMATION | activates | gene | 0.60 |
| CANCER | contributes_to | gene | 0.60 |
| GAPDH | inhibits | gene | 0.60 |
| RB1 | contributes_to | gene | 0.60 |
| AUTOPHAGY | regulates | gene | 0.60 |
| P16 | associated_with | gene | 0.60 |
| ROS | activates | gene | 0.60 |
| GENES | associated_with | gene | 0.60 |
| AUTOPHAGY | inhibits | gene | 0.60 |
| H2AX | expressed_in | gene | 0.60 |
| MDM2 | contributes_to | gene | 0.60 |
| BECN1 | inhibits | gene | 0.60 |
| ATG5 | inhibits | gene | 0.60 |
| MICRORNAS | associated_with | gene | 0.60 |
| CAT | inhibits | gene | 0.60 |
| ACTB | inhibits | gene | 0.60 |
| CTSD | inhibits | gene | 0.60 |
| DNA | inhibits | gene | 0.60 |
| CYCS | inhibits | gene | 0.60 |
| MITOCHONDRIAL DYSFUNCTION | regulates | gene | 0.60 |
| CDK1 | activates | gene | 0.60 |
| CDKN1A | regulates | gene | 0.60 |
| CYCLIN D1 | contributes_to | gene | 0.60 |
| EGFR | expressed_in | gene | 0.60 |
| CDK2 | activates | gene | 0.60 |
Hypotheses where this entity is a therapeutic target
| Hypothesis | Score | Disease | Analysis |
|---|---|---|---|
| p21^Cip1 Phospho-State as Autophagy Responsiveness Predictor | 0.710 | molecular biology | What is the optimal therapeutic window t |
| Timed Senolytic Therapy Eliminates p16^Ink4a/p21^Cip1-Senesc | 0.564 | neuroinflammation | What molecular mechanisms drive the tran |
| Nucleolar p21-rRNA Co-Aggregation as Irreversible Senescence | 0.500 | molecular biology | What is the optimal therapeutic window t |
Scientific analyses that reference this entity
neurodegeneration | 2026-04-04 | 7 hypotheses Top: 1.000
Experimental studies targeting or related to this entity
| Experiment | Type | Disease | Score | Feasibility | Model | Status | Est. Cost |
|---|---|---|---|---|---|---|---|
| No experiments found | |||||||
Scientific publications cited in analyses involving this entity
| Title & PMID | Authors | Journal | Year | Citations |
|---|---|---|---|---|
| No papers found | ||||
Multi-agent debates referencing this entity
closed · Rounds: 4 · Score: 0.81 · 2026-04-23
closed · Rounds: 4 · Score: 0.75 · 2026-04-16
closed · Rounds: 3 · Score: 0.95 · 2026-04-04
Hypotheses and analyses mentioning P21 in their description or question text
No additional research found