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Terminal differentiation into adipocyte and growth inhibition by PPARγ activation in human A549 lung adenocarcinoma cells
Animal Cells and Systems ( IF 2.5 ) Pub Date : 2020-11-01 , DOI: 10.1080/19768354.2020.1847731
Dae-Young Kim 1 , Sun-Ha Moon 1 , Jang-Ho Han 2 , Mi-Jeong Kim 1 , Seong-Ju Oh 2 , Dinesh Bharti 2 , Sung-Ho Lee 3 , Jong-Kuen Park 4 , Gyu-Jin Rho 2 , Byeong-Gyun Jeon 1, 5
Affiliation  

ABSTRACT The present study investigated the terminal differentiation capacity into adipocytes and subsequent growth inhibition in A549 cancer cells treated with pioglitazone (PGZ), a PPARγ activator. The rate of cell growth in A549 cells was significantly (P < .05) inhibited in concentrations above 10 μM PGZ while maintaining less cytotoxic effects in MRC-5 fibroblasts. Following 50 μM PGZ treatment, population doubling time (PDT) was significantly (P < .05) increased by inhibition of cell growth, as per increasing PGZ exposure time by up to 4 weeks. The adiposome-like vesicles were commonly observed in the PGZ-treated A549 cells, and the vesicles were highly stained with Oil-Red O solution. In addition, the cell size and expression of GLUT4 and PPARγ were significantly (P < .05) increased, as per increasing PGZ exposure time by up to 4 weeks. The significant (P < .05) down-regulation of telomerase activity and up-regulation of senescence-associated β-galactosidase (SA β-GAL) activity was displayed in the PGZ-treated A549 cells, as per increasing PGZ exposure time by up to 4 weeks. The G1 phase of the cell cycle was also significantly (P < .05) increased in the PGZ-treated A549 cells compared with untreated A549 cells. The present results have demonstrated that activation of PPARγ using PGZ induces cellular differentiation into adipocytes and inhibits cell growth in the A549 cancer cells. The terminal differentiation into adipocytes could offer potent chemotherapy in the cancer cells showing high glucose metabolism.

中文翻译:

人A549肺腺癌细胞终末分化为脂肪细胞并通过PPARγ激活抑制生长

摘要 本研究调查了用 PPARγ 激活剂吡格列酮 (PGZ) 处理的 A549 癌细胞中终末分化为脂肪细胞的能力和随后的生长抑制。A549 细胞中的细胞生长速率在高于 10 μM PGZ 的浓度下被显着抑制(P < .05),同时在 MRC-5 成纤维细胞中保持较小的细胞毒性作用。在 50 μM PGZ 处理后,根据将 PGZ 暴露时间增加长达 4 周,细胞生长抑制使群体倍增时间 (PDT) 显着增加(P < .05)。在 PGZ 处理的 A549 细胞中通常观察到脂肪体样囊泡,并且囊泡被油红 O 溶液高度染色。此外,细胞大小和 GLUT4 和 PPARγ 的表达显着增加(P < .05),根据将 PGZ 暴露时间增加最多 4 周。PGZ 处理的 A549 细胞显示端粒酶活性显着下调 (P < .05) 和衰老相关 β-半乳糖苷酶 (SA β-GAL) 活性上调,随着 PGZ 暴露时间的增加而增加到 4 周。与未处理的 A549 细胞相比,PGZ 处理的 A549 细胞中细胞周期的 G1 期也显着增加(P < .05)。目前的结果表明,使用 PGZ 激活 PPARγ 诱导细胞分化为脂肪细胞并抑制 A549 癌细胞中的细胞生长。最终分化为脂肪细胞可以为显示高葡萄糖代谢的癌细胞提供有效的化疗。05) PGZ 处理的 A549 细胞显示端粒酶活性下调和衰老相关 β-半乳糖苷酶 (SA β-GAL) 活性上调,因为 PGZ 暴露时间增加了 4 周。与未处理的 A549 细胞相比,PGZ 处理的 A549 细胞中细胞周期的 G1 期也显着增加(P < .05)。目前的结果表明,使用 PGZ 激活 PPARγ 诱导细胞分化为脂肪细胞并抑制 A549 癌细胞中的细胞生长。最终分化为脂肪细胞可以为显示高葡萄糖代谢的癌细胞提供有效的化疗。05) PGZ 处理的 A549 细胞显示端粒酶活性下调和衰老相关 β-半乳糖苷酶 (SA β-GAL) 活性上调,因为将 PGZ 暴露时间延长至 4 周。与未处理的 A549 细胞相比,PGZ 处理的 A549 细胞中细胞周期的 G1 期也显着增加(P < .05)。目前的结果表明,使用 PGZ 激活 PPARγ 诱导细胞分化为脂肪细胞并抑制 A549 癌细胞中的细胞生长。最终分化为脂肪细胞可以为显示高葡萄糖代谢的癌细胞提供有效的化疗。与未处理的 A549 细胞相比,PGZ 处理的 A549 细胞中细胞周期的 G1 期也显着增加(P < .05)。目前的结果表明,使用 PGZ 激活 PPARγ 诱导细胞分化为脂肪细胞并抑制 A549 癌细胞中的细胞生长。最终分化为脂肪细胞可以为显示高葡萄糖代谢的癌细胞提供有效的化疗。与未处理的 A549 细胞相比,PGZ 处理的 A549 细胞中细胞周期的 G1 期也显着增加(P < .05)。目前的结果表明,使用 PGZ 激活 PPARγ 诱导细胞分化为脂肪细胞并抑制 A549 癌细胞中的细胞生长。最终分化为脂肪细胞可以为显示高葡萄糖代谢的癌细胞提供有效的化疗。
更新日期:2020-11-01
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