Cyclopamine / TumCI Cancer Research Results

Cyc, Cyclopamine: Click to Expand ⟱
Features:
Cyclopamine is a natural steroidal alkaloid derived from the corn lily, Veratrum californicum, which specifically disrupts the Hh signaling pathway.

Cyclopamine — Cyclopamine is a natural steroidal alkaloid Hedgehog pathway antagonist derived from the corn lily Veratrum californicum. It is formally a small-molecule phytochemical / steroidal alkaloid and experimental Smoothened inhibitor. Cyclopamine is best treated as a preclinical tool compound and pharmacologic scaffold rather than a clinically deployed anticancer drug, because systemic translation is constrained by poor solubility, acid instability, limited pharmacokinetics, and developmental toxicity risk.

Primary mechanisms (ranked):

  1. Direct Smoothened inhibition with downstream suppression of canonical Hedgehog signaling and GLI transcriptional output.
  2. Suppression of Hedgehog-dependent cancer cell proliferation, survival, tumor growth, invasion, and metastatic behavior in susceptible models.
  3. Inhibition or reversal of epithelial-mesenchymal transition programs, including reduced GLI1, Snail, Twist, and N-cadherin with increased E-cadherin in context-dependent models.
  4. Reduction of cancer stem-like or tumor-initiating phenotypes where Hedgehog signaling maintains stemness or stromal tumor support.
  5. Secondary noncanonical effects, including Wnt beta-catenin pathway suppression and mitochondrial respiration impairment in some models.

Bioavailability / PK relevance: Cyclopamine has poor aqueous solubility, acid-sensitive conversion to less active products under gastric-like conditions, and suboptimal systemic pharmacokinetics. These constraints explain why clinically used Hedgehog inhibitors are synthetic SMO inhibitors or derivatives rather than cyclopamine itself.

In-vitro vs systemic exposure relevance: Many in-vitro studies use micromolar cyclopamine concentrations, often exceeding what is realistically attractive for systemic exposure with the parent compound. Interpretation should therefore distinguish pathway-probe activity from clinically achievable drug exposure. The compound is concentration-driven, not field-based or device-based.

Clinical evidence status: Preclinical tool compound. Cyclopamine has strong mechanistic and animal-model evidence for Hedgehog pathway inhibition, but it is not an approved anticancer drug and has not become a standard clinical intervention. Clinical translation of this mechanism is represented by approved SMO inhibitors such as vismodegib, sonidegib, and glasdegib, not by cyclopamine itself.

Cyclopamine cancer mechanism table

Rank Pathway / Axis Cancer Cells Normal Cells TSF Primary Effect Notes / Interpretation
1 SMO Hedgehog GLI axis SMO signaling ↓; GLI1 ↓; PTCH1 output ↓ Developmental and progenitor Hedgehog signaling ↓ R/G Core pathway blockade Most central and most reproducible mechanism. Relevant mainly in tumors with ligand-dependent Hedgehog activity, PTCH loss, SMO activation, or Hedgehog-dependent stromal support.
2 Proliferation and cell cycle control Proliferation ↓; G1 arrest ↑; tumor growth ↓ Normal proliferating progenitor activity may ↓ G Growth suppression Observed across multiple preclinical cancer models, but magnitude depends on Hedgehog dependency and concentration.
3 EMT invasion and metastasis EMT ↓; invasion ↓; migration ↓; metastasis ↓ Context-dependent effects on wound repair and developmental motility programs G Anti-invasive shift Mechanistically linked to GLI1 and EMT transcription factors. Direction aligns with E-cadherin ↑ and N-cadherin, Snail, or Twist ↓ in selected models.
4 Cancer stem-like signaling Self-renewal and tumor-initiating phenotype ↓ Normal stem or progenitor Hedgehog support may ↓ G Stemness suppression Important in tumors where Hedgehog signaling maintains cancer stem-like compartments or therapy-resistant subpopulations.
5 Stromal tumor support Paracrine tumor support ↓ in some models Stromal repair and tissue homeostasis may be altered G Microenvironment modulation Therapeutic leverage is context-dependent. In pancreatic cancer, later clinical experience with Hedgehog inhibition showed that stromal effects can be complex and not uniformly beneficial.
6 Wnt beta-catenin crosstalk Beta-catenin TCF transcription ↓; E-cadherin ↑ Context-dependent epithelial homeostasis effects G Secondary pathway suppression Reported in colorectal cancer models. Best interpreted as downstream or pathway-crosstalk biology rather than the primary drug target.
7 Mitochondrial respiration Aerobic respiration ↓; mitochondrial function ↓ Potential mitochondrial stress in normal cells R/G Secondary bioenergetic stress Reported especially with cyclopamine tartrate. This may contribute to cytotoxicity but is not the canonical defining mechanism.
8 Chemosensitization and radiosensitization Therapy resistance programs ↓ in Hedgehog-dependent contexts Normal-tissue effects uncertain G Adjunctive sensitization potential Preclinical rationale exists through Hedgehog and GLI suppression, but parent cyclopamine is not clinically established as an adjunct.
9 Clinical Translation Constraint In-vitro potency does not reliably translate to systemic therapy Teratogenic and developmental pathway risk is high G Translation limitation Poor solubility, acid instability, PK limitations, and developmental toxicity make cyclopamine mainly a research compound and scaffold for better SMO inhibitors.

P: 0–30 min

R: 30 min–3 hr

G: >3 hr
TumCI, Tumor Cell invasion: Click to Expand ⟱
Source:
Type:
Tumor cell invasion is a critical process in cancer progression and metastasis, where cancer cells spread from the primary tumor to surrounding tissues and distant organs. This process involves several key steps and mechanisms:

1.Epithelial-Mesenchymal Transition (EMT): Many tumors originate from epithelial cells, which are typically organized in layers. During EMT, these cells lose their epithelial characteristics (such as cell-cell adhesion) and gain mesenchymal traits (such as increased motility). This transition is crucial for invasion.

2.Degradation of Extracellular Matrix (ECM): Tumor cells secrete enzymes, such as matrix metalloproteinases (MMPs), that degrade the ECM, allowing cancer cells to invade surrounding tissues. This degradation facilitates the movement of cancer cells through the tissue.

3.Cell Migration: Once the ECM is degraded, cancer cells can migrate. They often use various mechanisms, including amoeboid movement and mesenchymal migration, to move through the tissue. This migration is influenced by various signaling pathways and the tumor microenvironment.

4.Angiogenesis: As tumors grow, they require a blood supply to provide nutrients and oxygen. Tumor cells can stimulate the formation of new blood vessels (angiogenesis) through the release of growth factors like vascular endothelial growth factor (VEGF). This not only supports tumor growth but also provides a route for cancer cells to enter the bloodstream.

5.Invasion into Blood Vessels (Intravasation): Cancer cells can invade nearby blood vessels, allowing them to enter the circulatory system. This step is crucial for metastasis, as it enables cancer cells to travel to distant sites in the body.

6.Survival in Circulation: Once in the bloodstream, cancer cells must survive the immune response and the shear stress of blood flow. They can form clusters with platelets or other cells to evade detection.

7.Extravasation and Colonization: After traveling through the bloodstream, cancer cells can exit the circulation (extravasation) and invade new tissues. They may then establish secondary tumors (metastases) in distant organs.

8.Tumor Microenvironment: The surrounding microenvironment plays a significant role in tumor invasion. Factors such as immune cells, fibroblasts, and signaling molecules can either promote or inhibit invasion and metastasis.
Scientific Papers found: Click to Expand⟱
16- Cyc,  RES,    Resveratrol inhibits the hedgehog signaling pathway and epithelial-mesenchymal transition and suppresses gastric cancer invasion and metastasis
- in-vitro, GC, SGC-7901
HH↓, Gli1↓, EMT↓, N-cadherin↓, E-cadherin↑, Snail↓, TumCI↓, TumMeta↓,
6245- Cyc,    Blockade of Hedgehog Signaling Inhibits Pancreatic Cancer Invasion and Metastases: A New Paradigm for Combination Therapy in Solid Cancers
- vitro+vivo, PC, NA
HH↓, Snail↓, E-cadherin↑, EMT↓, TumCI↓, ChemoSen↑, TumMeta↓, ALDH↓, eff↑,
6246- Cyc,    Cyclopamine is a novel Hedgehog signaling inhibitor with significant anti-proliferative, anti-invasive and anti-estrogenic potency in human breast cancer cells
- in-vitro, BC, MCF-7 - in-vitro, BC, MDA-MB-231
HH↓, TumCP↓, TumCCA↓, TumCI↓, NF-kB↓, MMP2↓, MMP9↓, ERα/ESR1↓, cycD1/CCND1↓,
6248- Cyc,    The Hedgehog Inhibitor Cyclopamine Reduces β-Catenin-Tcf Transcriptional Activity, Induces E-Cadherin Expression, and Reduces Invasion in Colorectal Cancer Cells
- in-vitro, CRC, NA
HH↓, Apoptosis↑, Slug↓, Snail↓, Twist↓, EMT↓, β-catenin/ZEB1↓, E-cadherin↑, TumCI↓,

Showing Research Papers: 1 to 4 of 4

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 4

Pathway results for Effect on Cancer / Diseased Cells:


Cell Death ⓘ

Apoptosis↑, 1,  

Cell Cycle & Senescence ⓘ

cycD1/CCND1↓, 1,   TumCCA↓, 1,  

Proliferation, Differentiation & Cell State ⓘ

ALDH↓, 1,   EMT↓, 3,   Gli1↓, 1,   HH↓, 4,  

Migration ⓘ

E-cadherin↑, 3,   MMP2↓, 1,   MMP9↓, 1,   N-cadherin↓, 1,   Slug↓, 1,   Snail↓, 3,   TumCI↓, 4,   TumCP↓, 1,   TumMeta↓, 2,   Twist↓, 1,   β-catenin/ZEB1↓, 1,  

Immune & Inflammatory Signaling ⓘ

NF-kB↓, 1,  

Hormonal & Nuclear Receptors ⓘ

ERα/ESR1↓, 1,  

Drug Metabolism & Resistance ⓘ

ChemoSen↑, 1,   eff↑, 1,  

Clinical Biomarkers ⓘ

ERα/ESR1↓, 1,  
Total Targets: 23

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: TumCI, Tumor Cell invasion
4 Cyclopamine
1 Resveratrol
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#:66  Target#:324  State#:%  Dir#:%
  wNotes=0  sortOrder:rid,rpid

 

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