Center for Stem Cell Research and Application, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Acta Pharmacol Sin. 2010 Jul;31(7):861-6. doi: 10.1038/aps.2010.76. Epub 2010 Jun 28.
To investigate the effects of trans-cinnamaldehyde (TCA) on the human leukemia K562 cell line and the cytotoxicity of cytokine-induced killer (CIK) cells against K562 cells.
Apoptosis, Fas expression, and mitochondrial transmembrane potential in K652 cells were analyzed using flow cytometry. K562 cells were labeled with CFSE. The cytotoxic effect of expanded CIK cells on CFSE-labeled K562 cells was determined by FACS flow cytometry.
Treatment with TCA 180 micromol/L for 9 h induced apoptosis in 8.9%+/-1.23% of K562 cells. Treatment with 120 or 180 micromol/L TCA for 24 h significantly increased the apoptotic cells to 18.63%+/-1.42 % and 38.98%+/-2.74%, respectively. TCA significantly upregulates Fas expression and decreases mitochondrial transmembrane potential in K562 cells. TCA treatment at 120 and 180 micromol/L for 9 h enhanced the percentage of lysis of K562 cells by expanded CIK cells from 34.84%+/-2.13% to 48.21%+/-2.22 % and 64.81%+/-3.22% at the E:F ratio of 25:1 and from 49.26%+/-3.22% to 57.81%+/-5.13% and 73.36%+/-5.98% at E:F ratio of 50:1.
TCA exerts cytotoxic effects on human leukemia K562 cells by inducing apoptosis and synergizing the cytotoxicity of CIK cells against K562 cells. These properties of TCA are beneficial to the treatment of leukemia, even in the patients who have received hematopoietic stem cells transplantation (HSCT).
研究反式肉桂醛(TCA)对人白血病 K562 细胞系的影响及细胞因子诱导的杀伤(CIK)细胞对 K562 细胞的细胞毒性。
采用流式细胞术分析 K652 细胞凋亡、Fas 表达和线粒体跨膜电位。用 CFSE 标记 K562 细胞。用 FACS 流式细胞术测定扩增的 CIK 细胞对 CFSE 标记的 K562 细胞的细胞毒性作用。
TCA 180 μmol/L 作用 9 h 可诱导 8.9%±1.23%的 K562 细胞发生凋亡,120 μmol/L 和 180 μmol/L TCA 作用 24 h 可使凋亡细胞分别增加到 18.63%±1.42%和 38.98%±2.74%。TCA 显著上调 K562 细胞 Fas 表达,降低线粒体跨膜电位。TCA 作用 9 h 时,在 E:F 比为 25:1 时,120 μmol/L 和 180 μmol/L TCA 可分别将扩增的 CIK 细胞对 K562 细胞的溶解率从 34.84%±2.13%提高到 48.21%±2.22%和 64.81%±3.22%,在 E:F 比为 50:1 时,可分别提高到 49.26%±3.22%、57.81%±5.13%和 73.36%±5.98%。
TCA 通过诱导细胞凋亡对人白血病 K562 细胞发挥细胞毒性作用,并协同 CIK 细胞对 K562 细胞的细胞毒性作用。TCA 的这些特性有利于白血病的治疗,甚至对接受造血干细胞移植(HSCT)的患者也有益。