木香对非小细胞肺癌中吉非替尼耐药的影响(1)
[摘要] 目的 观察云木香和印木香联合吉非替尼对非小细胞肺癌表皮生长因子受体酪氨酸激酶抑制剂(EGFR-TKI)耐药线虫模型的影响,初步探讨其主要有效成分。 方法 采用基因型人体化(LET-23::hEGFR-TK[T790M- L858R])的秀丽隐杆线虫突变体jgIs25,确定云木香和印木香的有效抑制浓度,并利用高效液相色谱法(Hypersil BDS C18 250 mm×4.6 mm,5 μm,检测波长:220 nm)初步确定其有效活性成分。 结果 当印木香浓度在100~750 μg/mL、云木香浓度在500~750 μg/mL时,对秀丽隐杆线虫突变体jgIs25阴门表达影响的差异有高度统计学意义(P < 0.01),初步推测活性单体为木香烃内酯、去氢木香内酯。 结论 木香联合吉非替尼可逆转非小细胞肺癌EGFR-TKI耐药,为后续临床研究提供基础。
[关键词] 木香;非小细胞肺癌;表皮生长因子受体酪氨酸激酶抑制剂;线虫
[中图分类号] R285 [文献标识码] A [文章编号] 1673-7210(2020)08(a)-0029-04
[Abstract] Objective To observe the effect of Saussurea costus and Indian costus combined with Gefitinib on the model of C. elegans which was resistant to epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKI), and to research the main effective active components. Methods Genotyped anthropogenic (LET-23::hEGFR-TK[T790M- L858R]) C. elegans mutant jgIs25 was used to ensure the effective inhibitory concentration of Saussurea costus and Indian costus. The effective active components were preliminarily determined by HPLC (Hypersil BDS C18 250 mm×4.6 mm, 5 μm, detection wavelength: 220 nm). Results There were significant differences in the vulva expression of C. elegans jgIs25, when the concentration of Indian costus was 100-750 μg/mL and Saussurea costus was 500-750 μg/mL (P < 0.01). It was preliminarily speculated that the active monomers were costunolide and dehydrocostus lactone. Conclusion Radix Aucklandiae combined with Gefitinib can reverse EGFR-TKI resistance in non-small cell lung cancer. It can provide the basis for the follow-up clinical research.
[Key words] Radix Aucklandiae; Non-small cell lung cancer; Epidermal growth factor receptor tyrosine kinase inhibitors; C. elegans
一代表皮生長因子受体酪氨酸激酶抑制剂(EGFR-TKI)是晚期非小细胞肺癌的一线靶向治疗药物,但多在患者中位生存时间9个月后出现耐药,主要由于EGFR20外显子T790M发生突变(约占50%[1-2])。针对上述耐药机制,国外三代不可逆EGFR-TKI(目前仅有一种新药奥西替尼上市[3])奥西替尼对T790M突变患者具有较好的反应率,相对于无突变患者,中位无进展生存期为9.6~13.5个月[4-10],但临床治疗费用高,并不能使经济状况一般的患者从中获益。中药的生物活性化合物的发掘是新药研发的来源之一[11-18]。秀丽隐杆线虫与哺乳动物EGFR信号通路同源[19],利用此线虫构建基因型为LET-23::hEGFR-TK[T790M-L858R]的秀丽隐杆线虫突变体jgIs25,可以用于中药逆转肺癌耐药的药效筛选模型。
1 材料与方法
1.1 材料
线虫模型:基因型LET-23::hEGFR-TK[T790M-L858R]的秀丽隐杆线虫突变体jgIs25,由韩国国家癌症研究中心Jaegal Shim教授赠送。印木香购自Med Com for Trading & Import. Co., Ltd;云木香购自广东天成药业有限公司(分别经过广东省第二人民医院副主任中药师陈燕鉴定为印木香和云木香)。二甲基亚砜(DMSO)购自上海阿拉丁试剂公司;琼脂粉和蛋白胨购自上海国药集团化学试剂有限公司;吉非替尼(420019,CAS 184475-35-2)、木香烃内酯(111524)、绿原酸(110753)和咖啡酸(110885)等对照品为中国食品药品检定研究院出品;去氢木香内酯对照品(A0301)购自北京中科质检生物技术有限公司;叠氮化钠、磷酸、甲醇、乙醇等试剂均为分析纯,购自广州化学试剂有限公司。, 百拇医药(童艳丽 黄冠 梅清华)
[关键词] 木香;非小细胞肺癌;表皮生长因子受体酪氨酸激酶抑制剂;线虫
[中图分类号] R285 [文献标识码] A [文章编号] 1673-7210(2020)08(a)-0029-04
[Abstract] Objective To observe the effect of Saussurea costus and Indian costus combined with Gefitinib on the model of C. elegans which was resistant to epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKI), and to research the main effective active components. Methods Genotyped anthropogenic (LET-23::hEGFR-TK[T790M- L858R]) C. elegans mutant jgIs25 was used to ensure the effective inhibitory concentration of Saussurea costus and Indian costus. The effective active components were preliminarily determined by HPLC (Hypersil BDS C18 250 mm×4.6 mm, 5 μm, detection wavelength: 220 nm). Results There were significant differences in the vulva expression of C. elegans jgIs25, when the concentration of Indian costus was 100-750 μg/mL and Saussurea costus was 500-750 μg/mL (P < 0.01). It was preliminarily speculated that the active monomers were costunolide and dehydrocostus lactone. Conclusion Radix Aucklandiae combined with Gefitinib can reverse EGFR-TKI resistance in non-small cell lung cancer. It can provide the basis for the follow-up clinical research.
[Key words] Radix Aucklandiae; Non-small cell lung cancer; Epidermal growth factor receptor tyrosine kinase inhibitors; C. elegans
一代表皮生長因子受体酪氨酸激酶抑制剂(EGFR-TKI)是晚期非小细胞肺癌的一线靶向治疗药物,但多在患者中位生存时间9个月后出现耐药,主要由于EGFR20外显子T790M发生突变(约占50%[1-2])。针对上述耐药机制,国外三代不可逆EGFR-TKI(目前仅有一种新药奥西替尼上市[3])奥西替尼对T790M突变患者具有较好的反应率,相对于无突变患者,中位无进展生存期为9.6~13.5个月[4-10],但临床治疗费用高,并不能使经济状况一般的患者从中获益。中药的生物活性化合物的发掘是新药研发的来源之一[11-18]。秀丽隐杆线虫与哺乳动物EGFR信号通路同源[19],利用此线虫构建基因型为LET-23::hEGFR-TK[T790M-L858R]的秀丽隐杆线虫突变体jgIs25,可以用于中药逆转肺癌耐药的药效筛选模型。
1 材料与方法
1.1 材料
线虫模型:基因型LET-23::hEGFR-TK[T790M-L858R]的秀丽隐杆线虫突变体jgIs25,由韩国国家癌症研究中心Jaegal Shim教授赠送。印木香购自Med Com for Trading & Import. Co., Ltd;云木香购自广东天成药业有限公司(分别经过广东省第二人民医院副主任中药师陈燕鉴定为印木香和云木香)。二甲基亚砜(DMSO)购自上海阿拉丁试剂公司;琼脂粉和蛋白胨购自上海国药集团化学试剂有限公司;吉非替尼(420019,CAS 184475-35-2)、木香烃内酯(111524)、绿原酸(110753)和咖啡酸(110885)等对照品为中国食品药品检定研究院出品;去氢木香内酯对照品(A0301)购自北京中科质检生物技术有限公司;叠氮化钠、磷酸、甲醇、乙醇等试剂均为分析纯,购自广州化学试剂有限公司。, 百拇医药(童艳丽 黄冠 梅清华)