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Kunitz type protease inhibitor from the canine tapeworm as a potential therapeutic for melanoma.


ABSTRACT: Modulating the tumor microenvironment to promote an effective immune response is critical in managing any type of tumor. Melanoma is an aggressive skin cancer and the incidence rate is increasing worldwide. Potent protease inhibitors have recently been extensively researched as potential therapeutic agents against various cancers. EgKI-1 is a potent Kunitz type protease inhibitor identified from the canine tapeworm Echinococcus granulosus that has shown anti-cancer activities in vivo. In this study we show that EgKI-1 significantly reduced the growth of melanoma in the B16-F0 mouse model and was not toxic to normal surrounding tissue. Moreover, EgKI-1 treatment significantly reduced survivin expression levels and increased the CD8+ T cell population in draining axillary lymph nodes. Therefore, EgKI-1 potentially reduces tumor growth by inducing apoptosis and modulating the tumor microenvironment, and has potential for development as an intra-lesional treatment for melanoma.

SUBMITTER: Ranasinghe SL 

PROVIDER: S-EPMC6838156 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Kunitz type protease inhibitor from the canine tapeworm as a potential therapeutic for melanoma.

Ranasinghe Shiwanthi L SL   Rivera Vanessa V   Boyle Glen M GM   McManus Donald P DP  

Scientific reports 20191107 1


Modulating the tumor microenvironment to promote an effective immune response is critical in managing any type of tumor. Melanoma is an aggressive skin cancer and the incidence rate is increasing worldwide. Potent protease inhibitors have recently been extensively researched as potential therapeutic agents against various cancers. EgKI-1 is a potent Kunitz type protease inhibitor identified from the canine tapeworm Echinococcus granulosus that has shown anti-cancer activities in vivo. In this st  ...[more]

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