Efficacy of Vemurafenib in a Trametinib-Resistant Stage IV Melanoma Patient—Letter

Efficacy of Vemurafenib in a Trametinib-Resistant Stage IV Melanoma Patient—Letter
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维罗非尼 (Vemurafenib) 对曲美替尼 (Trametinib) 耐药的 IV 期黑色素瘤患者的疗效

DOI:
10.1158/1078-0432.ccr-13-2349
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发表时间:
2014
影响因子:
11.5
通讯作者:
Utikal J
Utikal J
中科院分区:
医学1区
文献类型:
--
作者:
Bernhardt M;Orouji E;Larribere L;Gebhardt C;Utikal J

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图1。曲美替尼治疗前(上)和治疗后(下)拍摄的黑色素瘤转移灶石蜡包埋活检。S100B在去分化的曲美他滨耐药肿瘤细胞中低表达。B,从曲美替尼耐药皮下转移建立的黑色素瘤细胞系。C,通过Western印迹分析在曲美替尼耐药的肿瘤细胞中检测到强大的PERK活性(与单纯BRAF V600E突变的HT144黑色素瘤细胞相比)。D,FISH显示曲美替尼处理后BRAF基因拷贝数没有增加(绿色信号,BRAF基因位点(7q34);橙色信号,着丝粒7参考探针)。在AlamarBlue细胞增殖试验中,维莫拉非尼对曲美替尼耐药黑色素瘤细胞的有效性类似于NAYIVE V600E突变的HT144黑色素瘤细胞。F,Western印迹分析显示维莫拉非尼处理后耐曲美替尼的黑色素瘤细胞中磷酸化ERK的表达减少。DMSO,二甲基亚砜;GAPDH,甘油醛-3-磷酸脱氢酶。
Figure 1. A, paraffin-embedded biopsies of melanoma metastases taken before (top) and after treatment with trametinib (bottom). S100B expression is low in dedifferentiated trametinibresistant tumor cells. B, melanoma cell line established from a trametinib-resistant subcutaneous metastasis. C, strong pERK activity measured by Western blot analysis in trametinib-resistant tumor cells (in comparison with treatmentnaïve BRAF V600E-mutated HT144 melanoma cells). D, FISH shows no gain of BRAF gene copy numbers after trametinib treatment (green signals, BRAF gene locus (7q34); orange signals, centromeric 7 reference probe). E, efficacy of vemurafenib in trametinib-resistant melanoma cells similar to naïve V600E-mutated HT144 melanoma cells in the AlamarBlue cell proliferation assay. F, Western blot analysis showing a decrease of phosphoERK expression after vemurafenib administration in trametinib-resistant melanoma cells. DMSO, dimethyl sulfoxide; GAPDH, glyceraldehyde-3-phosphate dehydrogenase.
上游 MAPK 通路抑制:晚期黑色素瘤患者先使用 MEK 抑制剂,然后使用 BRAF 抑制剂。
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
S. Goldinger;Carla Murer;P. Stieger;R. Dummer
通讯作者: R. Dummer
DOI: 10.1016/j.ypat.2012.11.032
发表时间: 2013
期刊: Yearbook of Pathology and Laboratory Medicine
影响因子: --
作者:
J. Wisell
通讯作者: J. Wisell
DOI: 10.1016/j.ejca.2013.09.014
发表时间: 2014-01-01
影响因子: 8.4
作者:
Goldinger, Simone M.;Zimmer, Lisa;Dummer, Reinhard
通讯作者: Dummer, Reinhard