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Updated: Feb 12, 2026

A Model for Perineural Invasion in Head and Neck Squamous Cell Carcinoma
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Published on: January 5, 2017

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Targeting mTOR by CZ415 Inhibits Head and Neck Squamous Cell Carcinoma Cells

Jing Xie1, Quan Li2, Xi Ding1

  • 1Department of Stomatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.

Cellular Physiology and Biochemistry : International Journal of Experimental Cellular Physiology, Biochemistry, and Pharmacology
|April 6, 2018
PubMed
Abstract

Insights

The mTOR kinase inhibitor CZ415 effectively reduces human head and neck squamous cell carcinoma (HNSCC) cell growth. Combining CZ415 with autophagy inhibition enhances its anti-cancer effects in HNSCC models.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Therapeutics

Background:

  • The mammalian target of rapamycin (mTOR) pathway is a key therapeutic target in human head and neck squamous cell carcinoma (HNSCC).
  • The mTOR kinase inhibitor CZ415 was investigated for its anti-cancer activity against HNSCC.

Purpose of the Study:

  • To evaluate the efficacy of CZ415 as a therapeutic agent against HNSCC.
  • To investigate the mechanisms underlying CZ415's anti-tumor effects, including its impact on cell survival, proliferation, and autophagy.

Main Methods:

  • HNSCC cell lines and primary cells were treated with CZ415.
  • Cell viability, proliferation, apoptosis, and autophagy markers were assessed using assays such as LDH, MTT, BrdU ELISA, [H3] thymidine incorporation, TUNEL staining, and Western blotting.
  • In vivo efficacy was evaluated using a nude mice xenograft model.

Main Results:

  • CZ415 demonstrated significant inhibition of HNSCC cell survival and proliferation in vitro.
  • CZ415 blocked mTORC1/2 activation and ERK signaling, while inducing feedback autophagy.
  • Inhibition of autophagy potentiated CZ415-induced HNSCC cell death, and CZ415 reduced tumor growth in vivo.

Conclusions:

  • CZ415 exhibits potent anti-cancer activity against HNSCC both in vitro and in vivo.
  • Blocking autophagy enhances the therapeutic potential of CZ415 in HNSCC treatment.
Keywords:
AutophagyBeclin-1CZ415HnsccMTOR

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