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In most cancers, the expression level of heat shock proteins is increased, which makes cancer cells resistant to drug therapy and has a poor prognosis. They have also been linked to cell proliferation, invasion and metastasis. Lycopene, as a carotenoid, is an effective antioxidant used to prevent the growth of cancerous glands. Prostate cancer is one of the most common cancers seen in men. To treat this disease, surgery and chemotherapy are mostly used, which have many complications after treatment and are costly. In this study, prostate cancer was treated with lycopene and raw microarray big data were received from GEO section of NCBI database. Then, the expression changes of heat shock proteins (hsp27) were determined using bioinformatics tools and methods, and comparing the expression levels of lycopene-treated genes with non-treated ones showed that the expression level of HSPB8 gene was drastically reduced and also, no significant changes were observed in the expression level of other gene families in this group. Results show that lycopene can cause stress in cancer cells and this stress predisposes the cell to apoptosis.
 

Keywords: Bioinformatics, gene expression, lycopene, hsp27

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