Research Article


DOI :10.26650/EurJBiol.2024.1531120   IUP :10.26650/EurJBiol.2024.1531120    Full Text (PDF)

Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab

Asiye Büşra Boz Erİdris Er

Objective: Cellular senescence halts the proliferation of damaged or preneoplastic cells, playing a vital role in cancer control. In HER2-positive breast cancer, resistance to trastuzumab, a HER2-targeted monoclonal antibody, remains a significant obstacle. Although the trastuzumab and cilengitide combination reduces stemness and epithelial-mesenchymal transition, its effect on senescence remains unclear. Additionally, inhibiting the Notch and Hedgehog pathways can induce senescence by impairing proliferation, stemness, and cell cycle progression, making them promising therapeutic targets. This study aimed to evaluate the effect of trastuzumab/cilengitide on cellular senescence in HER2-positive trastuzumab-resistant breast cancer cells and to elucidate the roles of Notch and Hedgehog signalling in this process.

Materials and Methods:: HER2-positive breast cancer cell lines HCC1954 and SKBR3, along with their trastuzumab-resistant variants, were treated with trastuzumab, cilengitide, or both. Senescence markers were assessed by real-time PCR. Notch and Hedgehog pathway activity was evaluated, with additional experiments using specific inhibitors Fli06 (Notch) and GANT61 (Hedgehog).

Results: The trastuzumab-cilengitide combination significantly upregulated senescence markers relative to monotherapy. This response was associated with a marked decrease in Notch and Hedgehog pathway activity. Further combined inhibition of these pathways enhanced senescence marker expression, underscoring their involvement in drug-induced senescence.

Conclusion: The trastuzumab-cilengitide combination induces senescence in trastuzumab-resistant HER2-positive breast cancer cells, potentially through Notch and Hedgehog inhibition. These findings support targeting senescence pathways as a novel strategy to overcome trastuzumab resistance and improve therapeutic outcomes. Further research is warranted to assess the clinical potential of such combination therapies.


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APA

Boz Er, A.B., & Er, İ. (2024). Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab. European Journal of Biology, 83(2), 213-221. https://doi.org/10.26650/EurJBiol.2024.1531120


AMA

Boz Er A B, Er İ. Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab. European Journal of Biology. 2024;83(2):213-221. https://doi.org/10.26650/EurJBiol.2024.1531120


ABNT

Boz Er, A.B.; Er, İ. Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab. European Journal of Biology, [Publisher Location], v. 83, n. 2, p. 213-221, 2024.


Chicago: Author-Date Style

Boz Er, Asiye Büşra, and İdris Er. 2024. “Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab.” European Journal of Biology 83, no. 2: 213-221. https://doi.org/10.26650/EurJBiol.2024.1531120


Chicago: Humanities Style

Boz Er, Asiye Büşra, and İdris Er. Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab.” European Journal of Biology 83, no. 2 (Dec. 2024): 213-221. https://doi.org/10.26650/EurJBiol.2024.1531120


Harvard: Australian Style

Boz Er, AB & Er, İ 2024, 'Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab', European Journal of Biology, vol. 83, no. 2, pp. 213-221, viewed 22 Dec. 2024, https://doi.org/10.26650/EurJBiol.2024.1531120


Harvard: Author-Date Style

Boz Er, A.B. and Er, İ. (2024) ‘Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab’, European Journal of Biology, 83(2), pp. 213-221. https://doi.org/10.26650/EurJBiol.2024.1531120 (22 Dec. 2024).


MLA

Boz Er, Asiye Büşra, and İdris Er. Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab.” European Journal of Biology, vol. 83, no. 2, 2024, pp. 213-221. [Database Container], https://doi.org/10.26650/EurJBiol.2024.1531120


Vancouver

Boz Er AB, Er İ. Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab. European Journal of Biology [Internet]. 22 Dec. 2024 [cited 22 Dec. 2024];83(2):213-221. Available from: https://doi.org/10.26650/EurJBiol.2024.1531120 doi: 10.26650/EurJBiol.2024.1531120


ISNAD

Boz Er, AsiyeBüşra - Er, İdris. Notch and Hedgehog Signalling Axis Drive Senescence in HER2-Positive Breast Cancer Resistant to Trastuzumab”. European Journal of Biology 83/2 (Dec. 2024): 213-221. https://doi.org/10.26650/EurJBiol.2024.1531120



TIMELINE


Submitted09.08.2024
Accepted11.11.2024
Published Online19.12.2024

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