Sorafenib (brand name Nexavar) / Zeb1 Cancer Research Results

SRF, Sorafenib (brand name Nexavar): Click to Expand ⟱
Features: kinase inhibitor drug

Sorafenib (brand: Nexavar) — an oral multikinase inhibitor targeting RAF kinases and multiple receptor tyrosine kinases (VEGFR-1/2/3, PDGFR-β, FLT3, KIT, RET). Approved for advanced hepatocellular carcinoma (HCC), renal cell carcinoma (RCC), and differentiated thyroid carcinoma (DTC).

Primary mechanisms (conceptual rank):
1) RAF (CRAF/BRAF) inhibition → ↓ MAPK/ERK signaling
2) VEGFR/PDGFR blockade → anti-angiogenesis
3) Induction of mitochondrial apoptosis (Mcl-1↓; caspases↑)
4) Metabolic/redox stress modulation (ROS shifts; ferroptosis sensitization reported)
5) Tumor microenvironment effects (vascular normalization / hypoxia interplay)

Bioavailability / PK relevance: Oral; variable absorption; highly protein-bound; metabolized mainly by CYP3A4 and UGT1A9; half-life ~25–48 h. Achievable plasma levels are within low-micromolar range.

In-vitro vs oral exposure: Many mechanistic studies use concentrations within or slightly above clinical plasma range; off-target cytotoxicity typically at higher doses.

Clinical evidence status: FDA-approved for HCC, RCC, DTC; established survival benefit in advanced disease (modest median OS improvement).

Inhibitors of vascular endothelial growth factor receptor (VEGFR); used to treat kidney, liver and thyroid cancers.

Sorafenib (Nexavar) — Cancer vs Normal Cell Pathway Map

Rank Pathway / Axis Cancer Cells Normal Cells TSF Primary Effect Notes / Interpretation
1 RAF → MEK → ERK (MAPK) ↓ (primary) ↔ / ↓ (proliferating cells) R/G Reduced proliferative signaling Core intracellular target; inhibits CRAF and wild-type BRAF (not selective for BRAF V600E like vemurafenib).
2 VEGFR / PDGFR (angiogenesis) ↓ tumor vascularization ↓ endothelial proliferation R/G Anti-angiogenic effect Major driver of clinical efficacy in HCC/RCC; affects tumor microenvironment.
3 Intrinsic apoptosis (Mcl-1↓, caspases↑) ↑ ↔ / ↑ (dose-dependent) R/G Mitochondrial apoptosis Mcl-1 downregulation is characteristic; enhances chemosensitivity in some models.
4 ROS ↑ (dose-dependent) ↔ / ↑ (high exposure) P/R Oxidative stress contribution Redox stress may contribute to cytotoxicity and resistance mechanisms.
5 Ferroptosis ↑ (context-dependent) ↔ R/G Lipid peroxidation vulnerability Reported to sensitize HCC cells to ferroptosis via system Xc⁻ / SLC7A11 modulation.
6 PI3K/AKT/mTOR ↓ (secondary; model-dependent) ↔ R/G Reduced survival signaling Often compensatory pathway in resistance; combination target in trials.
7 HIF-1α ↓ (anti-angiogenic coupling) ↔ G Reduced hypoxia signaling Indirect via vascular effects; hypoxia may paradoxically increase in resistant tumors.
8 NRF2 ↑ (resistance-associated; context-dependent) ↔ R/G Adaptive antioxidant response NRF2 upregulation linked to sorafenib resistance in HCC.
9 Ca²⁺ signaling ↔ (stress-related) ↔ P/R Not primary axis Secondary to mitochondrial stress; not direct target.
10 Clinical Translation Constraint ↓ (constraint) ↓ (toxicity) — Resistance + tolerability limits Common AEs: hand-foot skin reaction, hypertension, diarrhea; resistance frequent via MAPK reactivation or NRF2 upshift.

TSF legend:
P: 0–30 min (kinase inhibition onset)
R: 30 min–3 hr (signaling cascade suppression)
G: >3 hr (gene regulation, angiogenesis suppression, apoptosis)
Zeb1, Zinc finger E-box-binding homeobox 1: Click to Expand ⟱
Source:
Type: protein
Transcription factor that promotes tumor invasion and metastasis by inducing epithelial-mesenchymal transition (EMT) in carcinoma cells.
Zinc finger E-box-binding homeobox 1 (ZEB1) is a transcription factor that plays a significant role in various biological processes, including embryonic development, cell differentiation, and epithelial-to-mesenchymal transition (EMT).

By repressing epithelial markers (e.g., E-cadherin) and promoting mesenchymal genes, Zeb1 facilitates cell migration, invasion, and metastasis.

Cancers (such as breast, colorectal, pancreatic, and lung cancers), Zeb1 is frequently upregulated. Zeb1 may be more prominent in specific tumor regions (e.g., invasive fronts) where EMT is actively occurring.
High levels of Zeb1 have been correlated with poor patient outcomes in multiple cancers.
Scientific Papers found: Click to Expand⟱
6915- FIS,  SRF,    Fisetin, a dietary flavonoid, augments the anti-invasive and anti-metastatic potential of sorafenib in melanoma
- in-vitro, Melanoma, NA
EMT↓, TumCP↓, PI3K↓, eff↑, N-cadherin↓, Vim↓, Fibronectin↓, E-cadherin↑, Snail↓, Twist↓, Slug↓, Zeb1↓, MMP2↓, MMP9↓, TumCI↓, TumMeta↓, ChemoSen↑,

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:


Proliferation, Differentiation & Cell State(tgid=12) ⓘ

EMT↓, 1,   PI3K↓, 1,  

Migration(tgid=13) ⓘ

E-cadherin↑, 1,   Fibronectin↓, 1,   MMP2↓, 1,   MMP9↓, 1,   N-cadherin↓, 1,   Slug↓, 1,   Snail↓, 1,   TumCI↓, 1,   TumCP↓, 1,   TumMeta↓, 1,   Twist↓, 1,   Vim↓, 1,   Zeb1↓, 1,  

Drug Metabolism & Resistance(tgid=21) ⓘ

ChemoSen↑, 1,   eff↑, 1,  
Total Targets: 17

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: Zeb1, Zinc finger E-box-binding homeobox 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#:16  Target#:341  State#:%  Dir#:1
  wNotes=0  sortOrder:rid,rpid

 

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