Snail Mucus Enhances Chemosensitivity of Triple-negative Breast Cancer Via Activation of the Fas Pathway

Anticancer Res. 2022 Feb;42(2):845-855. doi: 10.21873/anticanres.15542.

Abstract

Background/aim: The poor prognosis and chemoresistance of patients with triple-negative breast cancer (TNBC) urge the development of new therapeutic strategies. Snail mucus has shown its ability against inflammation, a process closely related to tumorigenesis, suggesting a potential anti-cancer activity.

Materials and methods: The effect and mechanisms of snail mucus on cell viability were determined by IncuCyte Live-cell analysis and molecular biological methods. The anti-cancer fractions of snail mucus were isolated and identified by medium pressure liquid chromatography (MPLC) and nuclear magnetic resonance (NMR) spectrometry analysis.

Results: Snail mucus significantly decreased the viability of TNBC cells with relatively lower cytotoxicity to normal breast epithelial cells and enhanced their response to chemotherapy through activation of Fas signaling by suppressing nucleolin. Two peptide fractions have been identified as the anti-cancer ingredients of the snail mucus.

Conclusion: Snail mucus can induce programmed cell death via the extrinsic apoptotic pathway and has therapeutic potential by achieving a chemo-sensitizing effect in TNBCs.

Keywords: Snail mucus; TNBC; anti-cancer; apoptosis; chemotherapy.

MeSH terms

  • Animals
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology*
  • Apoptosis / drug effects
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Cell Survival / drug effects
  • Doxorubicin / pharmacology
  • Drug Resistance, Neoplasm / drug effects
  • Drug Synergism
  • Humans
  • Mucus* / chemistry
  • Mucus* / metabolism
  • Signal Transduction / drug effects*
  • Snails* / metabolism
  • Triple Negative Breast Neoplasms / drug therapy
  • Triple Negative Breast Neoplasms / metabolism*
  • Triple Negative Breast Neoplasms / pathology
  • fas Receptor / metabolism*

Substances

  • Antineoplastic Agents
  • FAS protein, human
  • fas Receptor
  • Doxorubicin