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Multidimensional Coculture System to Model Lung Squamous Carcinoma Progression
Published on: March 17, 2020
Curcumin Inhibits Growth of Human NCI-H292 Lung Squamous Cell Carcinoma Cells by Increasing FOXA2 Expression
Lingling Tang1, Jinjin Liu1, Linyun Zhu1
1Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Abstract:
Lung squamous cell carcinoma (LSCC) is a common histological lung cancer subtype, but unlike lung adenocarcinoma, limited therapeutic options are available for treatment. Curcumin, a natural compound, may have anticancer effects in various cancer cells, but how it may be used to treat LSCC has not been well studied. Here, we applied curcumin to a human NCI-H292 LSCC cell line to test anticancer effects and explored underlying potential mechanisms of action. Curcumin treatment inhibited NCI-H292 cell growth and increased FOXA2 expression in a time-dependent manner. FOXA2 expression was decreased in LSCC tissues compared with adjacent normal tissues and knockdown of FOXA2 increased NCI-H292 cells proliferation. Inhibition of cell proliferation by curcumin was attenuated by FOXA2 knockdown. Moreover inhibition of STAT3 pathways by curcumin increased FOXA2 expression in NCI-H292 cells whereas a STAT3 activator (IL-6) significantly inhibited curcumin-induced FOXA2 expression. Also, SOCS1 and SOCS3, negative regulators of STAT3 activity, were upregulated by curcumin treatment. Thus, curcumin inhibited human NCI-H292 cells growth by increasing FOXA2 expression via regulation of STAT3 signaling pathways.
Insights
Curcumin, a natural compound, inhibits lung squamous cell carcinoma (LSCC) growth by increasing FOXA2 expression. This occurs through the regulation of STAT3 signaling pathways, offering potential new therapeutic strategies for LSCC.
Area of Science:
- Oncology
- Molecular Biology
- Natural Compounds
Background:
- Lung squamous cell carcinoma (LSCC) has limited therapeutic options compared to lung adenocarcinoma.
- Curcumin, a natural compound, shows potential anticancer effects but its role in LSCC treatment is understudied.
- Understanding the molecular mechanisms of potential LSCC treatments is crucial.
Purpose of the Study:
- To investigate the anticancer effects of curcumin on a human NCI-H292 LSCC cell line.
- To explore the underlying molecular mechanisms of curcumin's action in LSCC.
- To determine the role of FOXA2 and STAT3 signaling pathways in curcumin's therapeutic effect.
Main Methods:
- Treatment of NCI-H292 LSCC cells with curcumin.
- Analysis of cell growth, FOXA2 expression, and STAT3 pathway activity.
- Gene knockdown experiments to assess the role of FOXA2.
- Investigation of STAT3 pathway modulation using IL-6 and assessment of SOCS1/SOCS3 expression.
Main Results:
- Curcumin inhibited NCI-H292 cell growth and increased FOXA2 expression in a time-dependent manner.
- FOXA2 expression was lower in LSCC tissues than normal tissues; FOXA2 knockdown increased cell proliferation.
- Curcumin's inhibition of cell proliferation was reduced by FOXA2 knockdown, and curcumin modulated STAT3 signaling, upregulating SOCS1 and SOCS3.
Conclusions:
- Curcumin inhibits human NCI-H292 LSCC cell growth.
- The mechanism involves increasing FOXA2 expression via the regulation of STAT3 signaling pathways.
- Curcumin represents a potential therapeutic agent for LSCC, warranting further investigation.
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