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STMN1 Promotes Tumor Metastasis in Non-small Cell Lung Cancer Through Microtubule-dependent And

Lizhong Zeng1, Xin Lyu1, Jingyan Yuan1

  • 1Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Xi'an Jiaotong University, No. 157, Xiwu Road, Xincheng District, Xi'an 710004, Shaanxi, P.R. China.

International Journal of Biological Sciences
|February 22, 2024
PubMed
Summary

Stathmin 1 (STMN1) promotes non-small cell lung cancer (NSCLC) metastasis through both microtubule-dependent and independent pathways. Targeting STMN1 may offer a new therapeutic strategy for inhibiting NSCLC spread.

Keywords:
Epithelial-mesenchymal transitionHMGA1Non-small cell lung cancerSTMN1p38MAPK/STAT1

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Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • The role of Stathmin 1 (STMN1) in cancer metastasis remains debated.
  • Understanding STMN1's function in non-small cell lung cancer (NSCLC) metastasis is crucial for developing targeted therapies.

Purpose of the Study:

  • To investigate the role and underlying mechanisms of STMN1 in promoting NSCLC metastasis.
  • To explore the interaction of STMN1 with other proteins and signaling pathways involved in metastasis.

Main Methods:

  • Analysis of STMN1 expression in NSCLC tissues and correlation with prognosis.
  • In vivo and in vitro functional assays to assess STMN1's impact on metastasis.
  • Co-immunoprecipitation (Co-IP) and Liquid Chromatography-Mass Spectrometry (LC-MS/MS) to identify interacting proteins.
  • Investigation of signaling pathways, including p38MAPK/STAT1, and microtubule stability regulation.

Main Results:

  • STMN1 is highly expressed in NSCLC and linked to poor prognosis.
  • STMN1 promotes NSCLC cell migration and metastasis by affecting microtubule stability.
  • STMN1 interacts with HMGA1, which modulates STMN1 phosphorylation and microtubule stability.
  • STMN1 activates the p38MAPK/STAT1 pathway, promoting migration independently of microtubule stability, and forms a positive feedback loop with p38MAPK.

Conclusions:

  • STMN1 drives NSCLC metastasis via both microtubule-dependent and independent mechanisms.
  • The interaction between STMN1, HMGA1, and the p38MAPK pathway contributes to metastasis.
  • STMN1 presents a potential therapeutic target for inhibiting NSCLC progression and metastasis.