Pardaxin Promoted Differentiation and Maturation of Leukemic Cells via Regulating TLR2/MyD88 Signal against Cell Proliferation

Wu Ching Uen, Chen Yen Choong, Chen Jei Tai, Cheng Jeng Tai

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Objective. Leukemia is a cancer of the blood cells. Leukemic THP-1 and U937 cells were used in this study as monocytic effectors cells for proliferation responses and macrophage-like cells induction in leukemia. Pardaxin is an antimicrobial peptide isolated from the marine fish species. Methods. After treatment for 5 days, pardaxin significantly suppressed cell viability and arrested cell cycle at G0/G1 phase in leukemic cells which were evaluated. Results. Pardaxin also induced cell differentiation and maturation of THP-1 and U937 cells into macrophage-like cells with phagocytotic ability. Moreover, pardaxin elevated the expression of MyD88 but not toll-like receptor (TLR)-2 in both leukemic cells. TLR-2 blocking peptide was used to confirm that pardaxin attenuated phagocytotic ability and superoxide anion production in leukemic cells via activating MyD88 protein. Conclusions. These findings suggested that pardaxin has a therapeutic potential for leukemia.

Original languageEnglish
Article number7035087
JournalEvidence-based Complementary and Alternative Medicine
Publication statusPublished - Jan 1 2019


ASJC Scopus subject areas

  • Complementary and alternative medicine

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