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Ketamine demonstrates anti-cancer effects by reducing colorectal cancer cell viability and increasing apoptosis in vitro. Further research is needed to explore its potential clinical applications in cancer treatment.

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Area of Science:

  • Oncology
  • Pharmacology

Background:

  • Colorectal cancer (CRC) is a prevalent malignancy with high recurrence and mortality rates.
  • Anesthetic agents, like ketamine, may influence cancer cell behavior.
  • Investigating ketamine's effects on cancer is crucial for potential therapeutic strategies.

Purpose of the Study:

  • To evaluate the in vitro cytotoxic and pro-apoptotic effects of ketamine on the HT-29 human colorectal adenocarcinoma cell line.
  • To determine ketamine's impact on cancer cell proliferation and apoptosis.
  • To explore potential molecular interactions of ketamine with key cellular targets.

Main Methods:

  • HT-29 cells were exposed to ketamine, followed by MTT assays for viability and flow cytometry for apoptosis analysis.
  • Quantitative PCR (qPCR) assessed gene expression related to proliferation and apoptosis.
  • Molecular docking simulations investigated ketamine's interactions with NMDA receptor, EGFR, and CSNK1D.

Main Results:

  • Ketamine significantly reduced HT-29 cell viability in a dose-dependent manner (IC50 ≈ 1.05 µM).
  • Flow cytometry revealed a notable increase in early apoptosis (23.9%) in ketamine-treated cells.
  • Gene expression analysis and molecular docking provided insights into potential mechanisms.

Conclusions:

  • Ketamine exhibits significant anti-proliferative and pro-apoptotic effects on HT-29 colorectal cancer cells in vitro.
  • These findings highlight ketamine's potential as an anti-cancer agent.
  • Further investigation is required to elucidate molecular mechanisms and clinical relevance.