Proteomic analysis of oral keratinocytes chronically exposed to shisha

ABSTRACT: Shisha smoking is widely believed to be a hazard-free habit. Studies have reported shisha smoking to be associated with oral lesions as well ascarcinomas of the lung, esophagus, bladder, and pancreas. A better understanding of the underlying mechanism may contribute to the identification of biomarkers for targeted therapy and better prognosis of the disease. In this study, we have established a chronic model of shisha-exposed oral keratinocytes to study the effect of shisha smoking on oral cells. Normal oral keratinocytes (non-transformed and immortalised), OKF/TERT1, were chronically treated with shisha extract for 8 months. In vitro cellular assays as well as total proteomic analysis were performed using the OKF6/TERT1-Parental and shisha-exposed cells (OKF6/TERT1-Shisha) to understand the effect of shisha smoking on cellular transformation. Chronic exposure of OKF6/TERT1 cells with shisha resulted in a significant increase in cellular proliferation and cell invasion compared to the OKF6/TERT1-Parental cells. Quantitative proteomic analysis of OKF6/TERT1-Parental and OKF6/TERT1-Shisha cells resulted in the identification of more than 5,515 proteins. Of these 5,515 proteins, 82, 77, 106, 110 proteins were found to be differentially expressed (1.5-fold) in OKF6/TERT1 cells chronically treated with shisha extract for 2M, 4M, 6M and 8M, respectively when compared with OKF6/TERT1-Parental. Pathway and gene ontology-based analysis revealed dysregulation of interferon pathway, upregulation of proteins involved in cell growth and downregulation of immune processes. This study reveals that chronic treatment of normal oral keratinocytes with shisha leads to cellular transformation. Elucidation of dysregulated proteins in shisha smoke-exposed cells will provide insights into the effect of shisha smoking on oral cells and aid in identification of therapeutic targets.

INSTRUMENT(S): Orbitrap Fusion

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Oral Epithelium

SUBMITTER: Aditi Chatterjee  

LAB HEAD: Dr. Aditi Chatterjee

PROVIDER: PXD011106 | Pride | 2019-02-21

REPOSITORIES: pride