PENG Bo, HE Rong, HAN Jing-ya, et al. Intervention Effect of Iridoids on Characteristics of Breast Cancer Stem Cells ERK MAPK and PI3K/Akt Signaling Pathways[J]. Chinese journal of experimental traditional medical formulae, 2017, 23(18): 94-99.
PENG Bo, HE Rong, HAN Jing-ya, et al. Intervention Effect of Iridoids on Characteristics of Breast Cancer Stem Cells ERK MAPK and PI3K/Akt Signaling Pathways[J]. Chinese journal of experimental traditional medical formulae, 2017, 23(18): 94-99. DOI: 10.13422/j.cnki.syfjx.2017180094.
Objective: To investigate the effect of iridoids in Ajuga decumbens (ADI) on the characteristics of breast cancer stem cells (BCSCs) and its relevant mechanism.Method: We conducted several assays
including mammosphere formation assay
transwell migration
transwell invasion assay and flow cytometry to evaluated the cancer stem cell load and metastasis. Western blot was employed to detect the expression of associated proteins of BCSC markers
extracellular signal-regulated kinase 1/2(ERK1/2)
mitogen-activated protein kinase (MAPK) and phosphatidylinositol kinase 3-kinase (PI3K)/protein kinase B (Akt) signaling pathways.Result: The 5-80 mg · L-1 ADI could significantly inhibit the mammosphere formation
percentage of CD44+CD24-/low subpopulation
migration and invasion in a dose-dependent manner (P<0.05
P<0.01). Further studies found that ADI could markedly suppress p-ERK
p-Akt
octamer transcription factor-3/4 (Oct-3/4)
SRY-related HMG box-2 (Sox-2) and ES cell-associated transcripts 4 (Ecat4 or Nanog) of BCSCs (P<0.05
P<0.01).Conclusion: These results indicated that ADI could inhibit the characteristics of BCSCs by suppressing the ERK1/2 MAPK and PI3K/Akt pathways.