Cisplatin / PDK1 / PDPK1 Cancer Research Results

Cisplatin, Cisplatin: Click to Expand ⟱
Features:
Cisplatin is a chemotherapy medication used to treat various types of cancer. It is a platinum-based drug that works by interfering with the DNA of cancer cells, preventing them from reproducing and ultimately leading to cell death.
Cisplatin (cis-diamminedichloroplatinum II; CDDP) is a platinum-based chemotherapeutic agent that forms covalent DNA crosslinks, primarily intrastrand adducts at adjacent guanine bases. These distort DNA structure, block replication and transcription, and activate DNA damage response pathways (ATM/ATR → p53), leading to cell-cycle arrest and apoptosis. Secondary mechanisms include ROS generation, stress MAPK activation, and modulation of NF-κB. Clinical resistance frequently involves enhanced DNA repair (ERCC1/NER), altered drug transport (CTR1, ATP7A/B), and increased antioxidant defenses. Major toxicities include nephrotoxicity, ototoxicity, and peripheral neuropathy.

Rank Pathway / Axis Cancer / Tumor Context Normal Tissue Context TSF Primary Effect Notes / Interpretation
1 DNA crosslink formation (intrastrand adducts) DNA adducts ↑; replication block ↑ Normal dividing cells also affected P, R, G Direct DNA cytotoxicity Cisplatin forms covalent intrastrand crosslinks (primarily at adjacent guanines), distorting DNA and blocking replication and transcription.
2 DNA damage response (ATM / ATR → p53) Checkpoint activation ↑; p53 signaling ↑ ↔ (toxicity in proliferating tissues) R, G Damage signaling cascade DNA distortion activates ATM/ATR pathways leading to p53-mediated cell-cycle arrest and apoptosis.
3 Intrinsic apoptosis (mitochondrial pathway) Bax ↑; Bcl-2 ↓; caspase-9/3 ↑ Nephrotoxicity & ototoxicity risk G Execution of cell death Persistent DNA damage triggers mitochondrial outer membrane permeabilization and caspase activation.
4 Cell-cycle arrest (G2/M emphasis) G2/M arrest ↑ ↔ G Cytostasis → apoptosis Cells accumulate in G2/M phase due to unrepaired DNA lesions.
5 ROS generation / oxidative stress ROS ↑ (secondary mechanism) Oxidative injury ↑ (kidney, cochlea) R, G Stress amplification Cisplatin increases mitochondrial ROS and oxidative stress, contributing to cytotoxicity and organ toxicity.
6 MAPK signaling (JNK / p38 activation) Stress MAPK activation ↑ ↔ R, G Stress-response signaling JNK and p38 activation contribute to apoptosis and stress signaling.
7 NF-κB activation (resistance axis) NF-κB ↑ may promote survival ↔ R, G Resistance modulation NF-κB activation can reduce sensitivity; inhibition enhances cytotoxicity in some models.
8 DNA repair pathways (NER / ERCC1) NER ↑ → resistance — G Resistance determinant Nucleotide excision repair (ERCC1) removes platinum adducts; high ERCC1 correlates with resistance.
9 Drug transport (CTR1 uptake; ATP7A/B efflux) CTR1 ↓ or ATP7A/B ↑ → resistance — G Exposure constraint Copper transporters influence intracellular cisplatin accumulation and resistance.
10 Clinical toxicity profile — Nephrotoxicity, ototoxicity, neurotoxicity — Translation constraint Major dose-limiting toxicities arise from DNA damage and oxidative stress in normal tissues.

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

  • P: 0–30 min (DNA aquation and initial adduct formation)
  • R: 30 min–3 hr (checkpoint activation / stress signaling)
  • G: >3 hr (apoptosis, phenotype outcomes, resistance development)
PDK1 / PDPK1, Pyruvate dehydrogenase kinase 1: Click to Expand ⟱
Source:
Type:

PDPK1 - 3-Phosphoinositide-Dependent Protein Kinase 1

Abbreviation: PDPK1, PDK1

Type: Serine/threonine protein kinase / PI3K pathway signaling kinase / AGC kinase activator

Function: PDPK1 is a central signaling kinase downstream of phosphoinositide 3-kinase. It phosphorylates and activates multiple AGC-family kinases, including AKT, S6K, SGK, RSK, and selected PKC isoforms, thereby regulating proliferation, survival, metabolism, migration, and cellular growth.

Cancer: ↑ Frequently overexpressed, hyperactivated, or functionally dysregulated in cancer. Increased PDPK1 signaling enhances PI3K-AKT pathway output, proliferation, survival, migration, invasion, metastasis, metabolic adaptation, and resistance to anticancer therapies. Genetic or pharmacological suppression of PDPK1 can inhibit tumor growth and restore treatment sensitivity in experimental models.

Favorable Direction in Cancer: ↓ PDPK1 expression or kinase activity is generally favorable.
Scientific Papers found: Click to Expand⟱
6678- DCA,  Cisplatin,    Phase II study of dichloroacetate, an inhibitor of pyruvate dehydrogenase, in combination with chemoradiotherapy for unresected, locally advanced head and neck squamous cell carcinoma
- Trial, HNSCC, NA
PDK1 / PDPK1↓, OS∅, lactateProd↓, toxicity↝, FAO↑,

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:


Core Metabolism/Glycolysis(tgid=4) ⓘ

FAO↑, 1,   lactateProd↓, 1,   PDK1 / PDPK1↓, 1,  

Functional Outcomes(tgid=23) ⓘ

OS∅, 1,   toxicity↝, 1,  
Total Targets: 5

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: PDK1 / PDPK1, Pyruvate dehydrogenase kinase 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#:197  Target#:246  State#:%  Dir#:1
  wNotes=0  sortOrder:rid,rpid

 

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