doxorubicin / TRPC1 Cancer Research Results

doxoR, doxorubicin: Click to Expand ⟱
Features:
Doxorubicin, (brand name Adriamycin) is a chemotherapy medication used to treat breast cancer, bladder cancer, Kaposi's sarcoma, lymphoma, and acute lymphocytic leukemia. Often used together with other chemotherapy agents. Given by injection into a vein.
Doxorubicin is an anthracycline chemotherapy whose core anticancer activity is driven by DNA intercalation and topoisomerase II poisoning (DNA double-strand break stress), with additional contributions from redox cycling/iron-linked oxidative injury in some contexts. Its major clinical limitations are myelosuppression and cumulative dose–dependent cardiomyopathy, plus severe tissue injury if extravasated (leaks outside the vein).
-Cumulative cardiomyopathy risk is real and dose-dependent; labels note higher risk at higher cumulative doses (often cited around >550 mg/m², with lower limits in higher-risk patients).
-Mechanism split: tumor kill is primarily Topo II + DNA damage, while cardiotoxicity is strongly linked to TOP2β/mitochondrial pathways (redox/iron biology remains discussed, but not the only story).
-Administration hazard: extravasation can cause severe local injury;

Rank Pathway / Axis Cancer / Tumor Context Normal Tissue Context TSF Primary Effect Notes / Interpretation
1 Topoisomerase II poisoning (DNA double-strand break stress) Topo II–DNA cleavage complexes ↑ → DNA breaks ↑ → apoptosis/senescence ↑ (context) Also affects normal proliferating tissues (marrow, mucosa) P, R Core cytotoxic mechanism Primary anticancer mechanism: stabilization of Topo II–DNA cleavage complexes blocks repair and drives lethal DNA damage responses.
2 DNA intercalation → replication/transcription disruption DNA/RNA synthesis ↓; replication stress ↑ Off-target in normal dividing cells P, R Replication/transcription blockade Intercalation contributes to replication fork stress and complements Topo II poisoning.
3 Redox cycling / iron-associated oxidative injury (context-dependent) ROS / oxidative damage ↑ (reported; model-dependent) Oxidative injury risk in sensitive tissues (esp. heart) ↑ P, R, G Stress amplification Often described as semiquinone redox cycling and iron interactions; the relative importance vs Topo II varies by tissue/model.
4 Cardiotoxicity axis (TOP2β + mitochondrial injury; cumulative-dose dependent) — Risk of cardiomyopathy/heart failure ↑ with cumulative exposure R, G Major dose-limiting toxicity Clinically important boxed-warning toxicity; risk increases with cumulative dose (labels cite higher risk above ~550 mg/m²; higher-risk patients often use lower limits).
5 Myelosuppression (bone marrow progenitors) — Neutropenia/anemia/thrombocytopenia risk ↑ R, G Dose-limiting toxicity Expected on-target effect in rapidly dividing marrow cells; infection risk increases when neutrophils are low.
6 p53 / DNA-damage response programs DDR signaling ↑; p53 pathway engagement ↑ (context) DDR activation in normal tissues contributes to toxicity R, G Cell fate commitment Downstream of DNA breaks: checkpoint activation, apoptosis, senescence, or mitotic catastrophe depending on genotype and dose.
7 Immunogenic cell death signals (DAMP exposure; context-dependent) Potential ICD features ↑ (reported in some systems) — G Immune engagement (conditional) Anthracyclines are often discussed as capable of immunogenic cell death in certain settings; not universal across regimens.
8 Extravasation tissue injury (local) — Severe local tissue damage risk if IV leakage occurs P, R Administration hazard Boxed warning emphasizes severe tissue injury with extravasation; requires strict IV administration controls.
9 Secondary malignancy risk (therapy-related AML/MDS; exposure-dependent) — Rare long-term risk signal ↑ — Late toxicity constraint Listed in boxed warnings/labels as a potential late effect, especially with combination regimens.
10 Cardioprotection strategy (dexrazoxane; selected settings) — Cardiotoxicity risk ↓ (when used appropriately) R, G Risk mitigation Dexrazoxane is used to reduce anthracycline cardiotoxicity; mechanistic literature includes TOP2β-linked protection and other hypotheses.

Time-Scale Flag (TSF): P / R / G

  • P: 0–30 min (direct DNA/Topo interactions begin rapidly)
  • R: 30 min–3 hr (acute DNA-damage response + stress signaling)
  • G: >3 hr (gene programs, apoptosis/senescence, phenotype-level outcomes)
TRPC1, Transient Receptor Potential Canonical 1: Click to Expand ⟱
Source:
Type:
TRPC1 is a calcium-permeable ion channel protein that regulates key signaling pathways in many cell types, with roles in physiology and disease (including cancer). 
TRPC1 is upregulated in several cancer types, including breast cancer.
Since it contributes to Ca²⁺ influx, its overexpression can enhance signaling pathways that drive:
 -Proliferation
 -Migration & invasion
 -Epithelial–mesenchymal transition (EMT)
 -Chemoresistance

Breast cancer cell lines
MCF-7 (ER⁺, luminal type)
-TRPC1 is expressed and contributes to store-operated calcium entry (SOCE).
-Silencing or inhibiting TRPC1 tends to reduce proliferation and increase sensitivity to apoptosis.
MDA-MB-231 (triple-negative, invasive type)
-TRPC1 is generally upregulated compared to non-tumorigenic breast epithelial cells (like MCF10A or HBL-100).
-Promotes migration and invasion through calcium-dependent activation of signaling pathways (e.g., NFAT, ERK, AKT).
-Knockdown reduces motility and metastatic potential in vitro.
HBL-100 (SV40-transformed, non-malignant reference)
-TRPC1 expression is lower than in true malignant lines like MDA-MB-231.
-Often used as a “control” to highlight that TRPC1 is upregulated during malignant transformation.


Scientific Papers found: Click to Expand⟱
4425- MF,  doxoR,    Brief Magnetic Field Exposure Stimulates Doxorubicin Uptake into Breast Cancer Cells in Association with TRPC1 Expression: A Precision Oncology Methodology to Enhance Chemotherapeutic Outcome
- in-vitro, BC, 4T1 - in-vitro, BC, MCF-7
ChemoSen↑, TRPC1↑, Dose↓, selectivity↑,

Showing Research Papers: 1 to 1 of 1

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 1

Pathway results for Effect on Cancer / Diseased Cells:


Migration ⓘ

TRPC1↑, 1,  

Drug Metabolism & Resistance ⓘ

ChemoSen↑, 1,   Dose↓, 1,   selectivity↑, 1,  
Total Targets: 4

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: TRPC1, Transient Receptor Potential Canonical 1
Query results interpretion may depend on "conditions" listed in the research papers.
Such Conditions may include : 
  -low or high Dose
  -format for product, such as nano of lipid formations
  -different cell line effects
  -synergies with other products 
  -if effect was for normal or cancerous cells

Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:179  Target#:1376  State#:%  Dir#:2
  wNotes=0  sortOrder:rid,rpid

 

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