Targeting ceramide synthase 6-dependent metastasis-prone phenotype in lung cancer cells

Motoshi Suzuki , Ke Cao , Seiichi Kato

The Journal of Clinical Investigation +

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December 10, 2015

View abstract on PubMed

Summary

Ceramide synthase 6 (CERS6) overexpression in non-small cell lung cancer (NSCLC) drives metastasis by promoting cell invasion and lamellipodia formation. Targeting CERS6 offers a potential therapeutic strategy for NSCLC treatment.

Area Of Science

Molecular Biology
Oncology
Biochemistry

Background

Sphingolipids play crucial roles in cellular functions, including cell death and migration.
Alterations in sphingolipid metabolism are frequently observed in cancer, but their precise role in tumor progression remains unclear.

Purpose Of The Study

To investigate the role of ceramide synthase 6 (CERS6) in non-small cell lung cancer (NSCLC).
To explore the potential of targeting CERS6-dependent ceramide synthesis as a therapeutic strategy for NSCLC.

Main Methods

Analysis of CERS6 expression in NSCLC specimens and cell lines.
Investigated the impact of CERS6 knockdown and overexpression on NSCLC cell behavior in vitro and in vivo.
Utilized a combined therapeutic approach involving liposomes and a glucosylceramide synthase inhibitor in murine models.

Main Results

CERS6 was significantly overexpressed in NSCLC, correlated with reduced miR-101, increased invasion, and poor prognosis.
CERS6 knockdown decreased NSCLC cell migration, invasion, and lamellipodia formation, while overexpression promoted these processes.
Therapeutic intervention targeting ceramide homeostasis led to apoptosis, tumor regression, and attenuated lung metastasis in murine models.

Conclusions

CERS6-dependent ceramide synthesis is critical for lamellipodia formation and metastasis in NSCLC.
Targeting ceramide homeostasis presents a promising therapeutic avenue for CERS6-overexpressing NSCLC.

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