Activation of caspases and inhibition of ribosome biogenesis mediate antitumor activity of Chijongdan in A549 non-small lung cancer cells

BMC Complementary and Alternative Medicine

Sung-Hoon Kim¹  Oh sung Kwon¹  Sungmin Hwang¹  Eun Jung Sohn¹  Hee Young Kwon¹  Bo Geun Kim¹ 

[1] College of Korean Medicine, Kyung Hee University, Hoegidong, Dongdaemungu, Seoul 130-701, Republic of Korea

关键词: Ribosomal biogenesis;    Caspase activation;    A549 non-small lung cancer cells;    Chijongdan;   

Others  :  1085744
DOI  :  10.1186/1472-6882-14-420

 received in 2013-12-27, accepted in 2014-08-04,  发布年份 2014

【 摘 要 】

Background

Though herbal medicines have been used for cancer prevention and treatment, their scientific evidences still remain unclear so far. Thus, complementary and alternative medicine (CAM) project has been actively executed to reveal the scientific evidences in the USA and other countries. In the present study, we elucidated antitumor mechanism of Chijongdan, an oriental prescription of Rhus verniciflua, processed Panax ginseng, Persicaria tinctoria and Realgar, that has been traditionally applied for cancer treatment in Korea.

Methods

Chijongdan was prepared with extracts of Rhus verniciflua, processed Panax ginseng, Persicaria tinctoria and processed Realgar. The cytotoxicity of Chijongdan was measured by MTT colorimetric assay. Cell cycle analysis was performed by FACS. Western blot was performed to see the apoptosis related proteins.

Results

Chijongdan significantly exerted cytotoxicity in A549, H460 and H1299 non-small cell lung carcinoma (NSCLC) cells by MTT assay and also increased the number of ethidium homodimer positively stained cells in A549 NSCLC cells. Also, cell cycle analysis showed that Chijongdan increased sub-G1 population in a concentration dependent manner in A549 cells. In addition, Western blotting revealed that Chijongdan activated cleaved PARP, and caspase 9/3, while attenuated the expression of survival genes such as Bcl-2, Bcl-_XL and survivin in A549 cells. Furthermore, Chijongdan suppressed the expression of ribosomal biogenesis related proteins such as upstream binding factor (UBF), Fibrillarin, NPM (B23) and Importin-7 (IPO7) and conversely pan-caspase inhibitor Z--VAD-FMK reversed the apoptotic ability of Chijongdan to cleave PARP and caspase 3 and attenuate the expression of UBF and Fibrillarin in A549 cells.

Conclusions

These findings suggest that Chijongdan induces apoptosis and inhibits ribosomal biogenesis proteins via caspase activation.

【 授权许可】

   
2014 Kim et al.; licensee BioMed Central Ltd.

【 图 表 】

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