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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Cell+Mol+Med
2017 ; 21
(6
): 1171-1181
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Matrine induces Akt/mTOR signalling inhibition-mediated autophagy and apoptosis
in acute myeloid leukaemia cells
#MMPMID28026112
Wu J
; Hu G
; Dong Y
; Ma R
; Yu Z
; Jiang S
; Han Y
; Yu K
; Zhang S
J Cell Mol Med
2017[Jun]; 21
(6
): 1171-1181
PMID28026112
show ga
Pharmacological modulation of autophagy has been referred to as a promising
therapeutic strategy for cancer. Matrine, a main alkaloid extracted from Sophora
flavescens Ait, has antitumour activity against acute myelocytic leukaemia (AML).
Whether autophagy is involved in antileukaemia activity of matrine remains
unobvious. In this study, we demonstrated that matrine inhibited cell viability
and colony formation via inducing apoptosis and autophagy in AML cell lines
HL-60, THP-1 and C1498 as well as primary AML cells. Matrine promoted caspase-3
and PARP cleavage dose-dependently. Matrine up-regulated the level of LC3-II and
down-regulated the level of SQSTM1/p62 in a dose-dependent way, indicating that
autophagy should be implicated in anti-AML effect of matrine. Furthermore, the
autophagy inhibitor bafilomycin A1 relieved the cytotoxicity of matrine by
blocking the autophagic flux, while the autophagy promoter rapamycin enhanced the
cytotoxicity of matrine. Additionally, matrine inhibited the phosphorylation of
Akt, mTOR and their downstream substrates p70S6K and 4EBP1, which led to the
occurrence of autophagy. In vivo study demonstrated that autophagy was involved
in antileukaemia effect of matrine in C57BL/6 mice bearing murine AML cell line
C1498, and the survival curves showed that mice did benefit from treatment with
matrine. Collectively, our findings indicate that matrine exerts antitumour
effect through apoptosis and autophagy, and the latter one might be a potential
therapeutic strategy for AML.