Identifying specific Notch1 target
proteins in lung carcinoma cells
Wael Abdo Hassan1,2 and Takaaki Ito3
1Department of Pathology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt, 2Department of Basic Sciences, Sulaiman Al Rajhi University, College of Medicine, Al-Bukayriyah, KSA and 3Department of Pathology and Experimental Medicine, Kumamoto University, Graduate School of Medical Sciences, Kumamoto, Japan
Corresponding Author: Wael Abdo Hassan, Department of Basic sciences, Sulaiman Al Rajhi University, College of Medicine, Al Bukairiyah 51941, PO Box 777, Kingdom of Saudi Arabia. e-mail: w.hassan@sr.edu.sa
Summary. Background. The Notch signaling pathway has different roles in many human neoplasms, being either tumor-promoting or anti-proliferative. In addition, Notch signaling in carcinogenesis can be tissue dependent. The aim of the current study is to elucidate the relation between Notch1 protein expression in lung cancer cells and the following Notch related proteins: Hes1, c-Myc, Jagged1 and Jagged2.
Methods. Notch1 and its related proteins were detected in human lung cancer cell lines and in 54 surgically resected different lung carcinoma tissues. Then, we used small interfering RNA (siRNA) technology, to down-regulate the expression of Notch1 in H69AR and SBC3 small cell lung carcinoma (SCLC) cells. Also, we transfected venus Notch1 intracellular domain (v.NICD) plasmid into human SCLC lines; H69.
Results. The expression of Hes1, c-Myc and Jagged2 is affected by Notch1 in SCLC.
Conclusion. There is a strong association between the expression of Notch1 protein and the expression of Hes1, c-Myc and Jagged2 proteins, which could aid in better understanding tumorigenesis in SCLC. Histol Histopathol 36, 69-76 (2021)
Key words: Human lung cancer, Notch1 signaling, Small interfering RNA (siRNA), Venus Notch1 intracellular domain (v.NICD)
DOI: 10.14670/HH-18-271
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©The Author(s) 2021. Open Access. This article is licensed under a Creative Commons CC-BY International License. |
