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Baicalein Inhibits Orthotopic Human Non-Small Cell Lung Cancer Xenografts via Src/Id1 Pathway

Zhengxiao Zhao1, Baojun Liu1,2, Jing Sun1,2

  • 1The Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China.

Evidence-Based Complementary and Alternative Medicine : Ecam
|April 6, 2019
PubMed

Insights

Baicalein effectively reduces non-small cell lung cancer (NSCLC) tumor growth by targeting the Src/Id1 pathway. This natural compound inhibits key proteins involved in tumor progression and blood vessel formation.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Non-small cell lung cancer (NSCLC) is a leading cause of cancer mortality globally.
  • Inhibitor of differentiation 1 (Id1) is implicated in cancer development and serves as a potential therapeutic target.
  • Understanding novel therapeutic strategies for NSCLC is crucial.

Purpose of the Study:

  • To investigate the antitumor effects of baicalein in an orthotopic NSCLC model.
  • To elucidate the molecular mechanisms underlying baicalein's action, focusing on the Src/Id1 pathway.

Main Methods:

  • Establishment of an orthotopic NSCLC xenograft model using A549 cells in athymic nude mice.
  • Administration of baicalein and evaluation of antitumor effects via Micro-CT imaging.
  • Analysis of protein expression (Id1, EMT markers, VEGF-A, E-cadherin) and Src phosphorylation using Western blot.

Main Results:

  • Baicalein significantly reduced tumor volume in the orthotopic NSCLC model.
  • Baicalein suppressed Id1 expression, epithelial-to-mesenchymal transition (EMT) markers (N-Cadherin, vimentin), and VEGF-A.
  • Baicalein treatment led to upregulation of epithelial markers (E-cadherin) and inhibition of Src phosphorylation.

Conclusions:

  • Baicalein exhibits significant antitumor activity against human NSCLC xenografts.
  • The study demonstrates that baicalein targets the Src/Id1 pathway to inhibit tumor growth, EMT, and angiogenesis.
  • Baicalein represents a promising therapeutic agent for NSCLC treatment.

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