Int J Oral Biol.  2017 Sep;42(3):107-115. 10.11620/IJOB.2017.42.3.107.

Anti-cancer and -Metastatic Effects of Lactobacillus Rhamnosus GG Extract on Human Malignant Melanoma Cells, A375P and A375SM

• Lee J
• Park S
• Seo J
• Roh S

• KMID: 2394579
• DOI: http://doi.org/10.11620/IJOB.2017.42.3.107

Abstract

Human malignant melanoma is an aggressive skin cancer which has been rising at a greater rate than any other cancers. Although various new therapeutic methods have been developed in previous studies, this disease has properties of high proliferation and metastasis rate which remain obstacles that have lead to a poor prognosis in patients. It has been reported that a specific Lactobacillus extract has anti-cancer and -metastasis effect in vitro and in vivo. However, previous research has not specified precisely what effect the Lactobacillus rhamnosus GG (LGG) extract has had on human malignant melanomas. In this study, we showed that the LGG extract has anti-cancer and -metastasis effects on the human malignant melanoma cell lines, A375P and A375SM. At first, it was found that, while the LGG extract affects human neonatal dermal fibroblasts slightly, it induced the dose-dependent anti-cancer effect on A375P and A375SM by a WST-1 proliferation assay. As a result of a real-time PCR analysis, the expression patterns of several genes related to cell cycle, proliferation, and apoptosis were modulating in a manner that inhibited the growth of both malignant melanoma cell lines after the treatment of the LGG extract. Furthermore, genes related to the epithelialmesenchymal transition were down-regulated, and migration rates were also decreased significantly by the LGG extract. Our study showed that the LGG extract could be used as a potential therapeutic source.

Keyword

Lactobacillus; Human malignant melanoma; Anti-cancer; Epithelial-mesenchymal transition

MeSH Terms

Apoptosis
Cell Cycle
Cell Line
Epithelial-Mesenchymal Transition
Fibroblasts
Humans*
In Vitro Techniques
Lactobacillus rhamnosus*
Lactobacillus*
Melanoma*
Neoplasm Metastasis
Prognosis
Real-Time Polymerase Chain Reaction
Skin Neoplasms