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Antitumor Activity of Tetrahydro-β-carboline Derivatives via Inhibition of Kinesin Spindle Protein: Validation by

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|June 13, 2025
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Novel tetrahydro-β-carboline derivatives show promise for lung cancer therapy. Compounds 8 and 16 effectively kill A549 lung cancer cells by inducing apoptosis and targeting the Eg5 protein.

Keywords:
Eg5 proteinantitumorhuman lung adenocarcinoma(A549) cellstetrahydro-β-carboline heterocyclic derivatives

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Area of Science:

  • Medicinal Chemistry
  • Molecular Biology
  • Oncology

Background:

  • Tetrahydro-β-carboline is a key structure in natural products and drugs with anticancer potential.
  • Lung cancer remains a leading cause of cancer-related deaths worldwide, necessitating new therapeutic strategies.

Purpose of the Study:

  • To design and synthesize novel tetrahydro-β-carboline derivatives.
  • To evaluate the anticancer activity of these derivatives against human lung cancer (A549) cells.
  • To elucidate the mechanism of action for the most potent compounds.

Main Methods:

  • Synthesis of 33 novel tetrahydro-β-carboline derivatives.
  • In vitro cytotoxicity assays against A549 lung cancer cells.
  • Cell migration and colony formation assays.
  • Apoptosis induction studies (Bax, Bcl-2, caspase activation).
  • Molecular docking, dynamics simulations, and thermal shift assays targeting the Eg5 protein.

Main Results:

  • Compounds 8 and 16 demonstrated significant cytotoxicity against A549 cells.
  • These compounds suppressed cell migration and colony formation.
  • Apoptosis was induced via upregulation of Bax, downregulation of Bcl-2, and caspase activation.
  • Compounds 8 and 16 selectively targeted and stabilized the Eg5 protein, as confirmed by computational and experimental methods.

Conclusions:

  • Compounds 8 and 16 are potent anticancer agents against human lung cancer.
  • Their mechanism involves Eg5 protein stabilization and induction of apoptosis.
  • These derivatives represent promising lead candidates for developing new lung cancer therapies.