浙江医学
浙江醫學
절강의학
ZHEJIANG MEDICAL JOURNAL
2014年
4期
267-270,306
,共5页
紫草素%甲状腺髓样癌%细胞增殖%细胞凋亡
紫草素%甲狀腺髓樣癌%細胞增殖%細胞凋亡
자초소%갑상선수양암%세포증식%세포조망
Shikonin%Medul ary carcinoma of thyroid%cellproliferation%Cell apoptosis
目的:了解紫草素抑制甲状腺癌TT细胞增殖的作用及机制。方法采用MTT法分析紫草素对人甲状腺癌TT细胞增殖的影响;流式细胞术分析紫草素对TT细胞周期分布和凋亡的影响;透射电镜观察紫草素对TT细胞凋亡和自噬的调控。结果不同浓度紫草素作用24~72h对TT细胞均有抑制增殖的作用,并随药物浓度增加和作用时间延长而增强。紫草素作用24h,2、4滋g/ml紫草素组细胞出现凋亡峰(亚二倍体峰),与空白对照组比较差异有统计学意义(P<0.05),但未见明显的细胞周期阻滞。Annex-inV- PE/7- AAD双染法分析细胞凋亡,2滋g/ml紫草素作用TT细胞24h,早期凋亡细胞增至8.0%;而空白对照组为0.2%,凋亡后期继发坏死细胞为11.3%,空白对照组为0.1%;作用48h后,早期凋亡细胞为24.9%,凋亡后期继发坏死细胞上升为14.2%。2滋g/ml紫草素作用TT细胞24h,透射电镜观察可见典型的细胞凋亡和自噬结构。结论紫草素具有抑制人甲状腺癌TT细胞增殖的作用,呈剂量和时间依赖关系;其作用机制与诱导细胞凋亡和自噬有关。
目的:瞭解紫草素抑製甲狀腺癌TT細胞增殖的作用及機製。方法採用MTT法分析紫草素對人甲狀腺癌TT細胞增殖的影響;流式細胞術分析紫草素對TT細胞週期分佈和凋亡的影響;透射電鏡觀察紫草素對TT細胞凋亡和自噬的調控。結果不同濃度紫草素作用24~72h對TT細胞均有抑製增殖的作用,併隨藥物濃度增加和作用時間延長而增彊。紫草素作用24h,2、4滋g/ml紫草素組細胞齣現凋亡峰(亞二倍體峰),與空白對照組比較差異有統計學意義(P<0.05),但未見明顯的細胞週期阻滯。Annex-inV- PE/7- AAD雙染法分析細胞凋亡,2滋g/ml紫草素作用TT細胞24h,早期凋亡細胞增至8.0%;而空白對照組為0.2%,凋亡後期繼髮壞死細胞為11.3%,空白對照組為0.1%;作用48h後,早期凋亡細胞為24.9%,凋亡後期繼髮壞死細胞上升為14.2%。2滋g/ml紫草素作用TT細胞24h,透射電鏡觀察可見典型的細胞凋亡和自噬結構。結論紫草素具有抑製人甲狀腺癌TT細胞增殖的作用,呈劑量和時間依賴關繫;其作用機製與誘導細胞凋亡和自噬有關。
목적:료해자초소억제갑상선암TT세포증식적작용급궤제。방법채용MTT법분석자초소대인갑상선암TT세포증식적영향;류식세포술분석자초소대TT세포주기분포화조망적영향;투사전경관찰자초소대TT세포조망화자서적조공。결과불동농도자초소작용24~72h대TT세포균유억제증식적작용,병수약물농도증가화작용시간연장이증강。자초소작용24h,2、4자g/ml자초소조세포출현조망봉(아이배체봉),여공백대조조비교차이유통계학의의(P<0.05),단미견명현적세포주기조체。Annex-inV- PE/7- AAD쌍염법분석세포조망,2자g/ml자초소작용TT세포24h,조기조망세포증지8.0%;이공백대조조위0.2%,조망후기계발배사세포위11.3%,공백대조조위0.1%;작용48h후,조기조망세포위24.9%,조망후기계발배사세포상승위14.2%。2자g/ml자초소작용TT세포24h,투사전경관찰가견전형적세포조망화자서결구。결론자초소구유억제인갑상선암TT세포증식적작용,정제량화시간의뢰관계;기작용궤제여유도세포조망화자서유관。
Objective To investigate the effect of shikonin on proliferation of human thyroid carcinoma TT cells. Methods Human thyroid carcinoma TT cells were treated with shikonin in vitro. cellproliferation was examined by MTT method, cellapop-tosis was detected by flow cytometry. Results MTT assay showed that shikonin inhibited TT cellproliferation in a dose- and time- dependent manner (P<0.01). Flow cytometry revealed sub- diploid (apoptosis) peaks in TT cells after treated with shikonin 2μg/ml and 4μg/ml for 24h; however, there was no cellcycles arrest. Annexin V- PE/7- AAD staining also demonstrated cellapoptosis. Electron microscopy showed typical morphological characteristics of autophagy and cell apoptosis after treatment of shikonin. Conclusion Shikonin can inhibit proliferation of human thyroid carcinoma TT cells, which is associated with the cellapoptosis and autophagy.