Pathway-focused PCR array profiling of CAL-27 cell with over-expressed ZNF750

Area of Science:

• Oncology
• Molecular Biology
• Gene Expression Analysis

Background:

• Oral squamous cell carcinoma (OSCC) is a prevalent cancer with a need for novel therapeutic targets.
• Zinc-finger protein 750 (ZNF750) has emerged as a potential tumor suppressor in OSCC.
• Understanding ZNF750's regulatory role is crucial for developing targeted therapies.

Purpose of the Study:

• To investigate ZNF750 expression levels in OSCC tissues.
• To analyze the impact of ZNF750 overexpression on mRNA expression profiles in CAL-27 cells.
• To identify key signaling pathways regulated by ZNF750 in OSCC.

Main Methods:

• Immunohistochemistry was used to detect ZNF750 protein expression in OSCC patient tissues.
• Human Signal Transduction PathwayFinder RT2 Profiler PCR Array was employed for gene expression profiling.
• Analysis of 84 key genes across 10 major signaling pathways in ZNF750-overexpressed CAL-27 cells.

Main Results:

• ZNF750 protein expression was significantly reduced in OSCC tissues compared to normal tissues.
• Overexpression of ZNF750 in CAL-27 cells resulted in significant expression changes in 39 out of 84 analyzed genes (at least two-fold change).
• Affected genes are involved in crucial pathways including oxidative stress, WNT, JAK/STAT, TGFβ, NF-kappaB, p53, Notch, Hedgehog, PPAR, and Hypoxia signaling.

Conclusions:

• ZNF750 plays a suppressive role in OSCC, as evidenced by its decreased expression in tumor tissues.
• ZNF750 modulates multiple signaling pathways, including those regulating proliferation, cell cycle, inflammation, and oxidative stress.
• ZNF750's ability to inhibit specific genes (e.g., ATF4, CCND1, TNF-alpha) and activate others (e.g., CDKN1A) highlights its complex regulatory function in OSCC.