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02.09.2020 | original article

HS-173, a selective PI3K inhibitor, induces cell death in head and neck squamous cell carcinoma cell lines

verfasst von: Elisabeth Foki, MD, Isabella Stanisz, MD, Lorenz Kadletz, MD, Ulana Kotowski, MD, Rudolf Seemann, MD, DMD, MSc, MBA, Rainer Schmid, MD, Gregor Heiduschka, MD, PD

Erschienen in: Wiener klinische Wochenschrift | Ausgabe 1-2/2021

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Summary

Background

The selective PI3K (Phosphatidylinositol 3-kinase) inhibitor HS-173 has anticancer activity in non-small cell lung cancer and pancreatic cancer cells. Of all head and neck squamous cell carcinomas (HNSCC) 20% harbor specific mutations in the genome. The aim of this study was to investigate the effect of HS-173 on HNSCC cell lines.

Methods

The cell lines SCC25, CAL27 and FaDu were incubated with HS-173. Its antiproliferative effect was determined using the CCK‑8 cell proliferation assay. Combined incubation with cisplatin was performed and combination index analysis was conducted. To investigate its effect on radiotherapy, cells were irradiated with 2, 4, 6 and 8 Gy, respectively. Synergistic effects of radiation and HS-173 were measured by proliferation assays and clonogenic survival.

Results

The use of HS-173 induced significant reduction of cell proliferation across all cell lines. Most interestingly, it showed a synergistic effect with cisplatin treatment. Clonogenic survival revealed a radiosensitizing effect in CAL27 and FaDu cells. The HS-173 caused significant induction of apoptosis in SCC25 and FaDu cells.

Conclusion

The selective PI3K inhibitor HS-173 is a potent chemosensitizing and also radiosensitizing drug in treatment of HNSCC cell lines and could be an effective treatment in PI3K-mutated HNSCC.
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Metadaten
Titel
HS-173, a selective PI3K inhibitor, induces cell death in head and neck squamous cell carcinoma cell lines
verfasst von
Elisabeth Foki, MD
Isabella Stanisz, MD
Lorenz Kadletz, MD
Ulana Kotowski, MD
Rudolf Seemann, MD, DMD, MSc, MBA
Rainer Schmid, MD
Gregor Heiduschka, MD, PD
Publikationsdatum
02.09.2020
Verlag
Springer Vienna
Erschienen in
Wiener klinische Wochenschrift / Ausgabe 1-2/2021
Print ISSN: 0043-5325
Elektronische ISSN: 1613-7671
DOI
https://doi.org/10.1007/s00508-020-01729-3