BCRP expression in schwannoma, plexiform neurofibroma and MPNST.

BCRP expression in schwannoma, plexiform neurofibroma and MPNST.
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DOI:
10.18632/oncotarget.21075
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发表时间:
2017-10-24
期刊:
影响因子:
--
通讯作者:
Hogendoorn PCW
Hogendoorn PCW
中科院分区:
其他
文献类型:
--
作者:
de Vries M;van Tellingen O;van der Mey AGL;Bunt AMG;Bruijn IB;Hogendoorn PCW

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周围神经鞘肿瘤包括广泛的肿瘤。前庭神经鞘瘤和丛状神经纤维瘤虽然是良性的,但有一部分恶性前病变会转变为恶性周围神经鞘瘤(MPNST)。手术和放疗是治疗这些肿瘤的主要策略。对药物治疗的内在耐药性是所有三种肿瘤亚型的特征。乳腺癌耐药蛋白BCRP是一种跨膜外排转运蛋白,被认为在血脑屏障等多种生物屏障中起关键作用。同时,它还与多种肿瘤的耐药性有关。它在周围神经系统耐药肿瘤中的潜在作用在很大程度上是未知的。评估BCRP是否在前庭神经鞘瘤、丛状神经纤维瘤和MPNST中表达。对22例前庭神经鞘瘤、10例丛状神经纤维瘤和18例MPNSTs组成的组织微阵列进行BCRP免疫组化染色。22例前庭神经鞘瘤中有16例(73%),10例丛状神经纤维瘤中有9例(90%),18例MPNST中有6例(33%)在血管中表达BCRP。肿瘤细胞呈阴性。BCRP存在于前庭神经鞘瘤、丛状神经纤维瘤和MPSNT的血管中。因此,它可能会减少潜在肿瘤组织的药物暴露,并可能导致药物治疗失败。
peripheral nerve sheath tumors comprise a broad spectrum of neoplasms. Vestibular schwannomas and plexiform neurofibromas are symptomatic albeit benign, but a subset of the latter pre-malignant lesions will transform to malignant peripheral nerve sheath tumors (MPNST). Surgery and radiotherapy are the primary strategies to treat these tumors. Intrinsic resistance to drug therapy characterizes all three tumor subtypes. The breast cancer resistance protein BCRP is a transmembrane efflux transporter considered to play a key role in various biological barriers such as the blood brain barrier. At the same time it is associated with drug resistance in various tumors. Its potential role in drug resistant tumors of the peripheral nervous system is largely unknown. to assess if BCRP is expressed in vestibular schwannomas, plexiform neurofibromas and MPNST. immunohistochemical staining for BCRP was performed on a tissue microarray composed out of 22 vestibular schwannomas, 10 plexiform neurofibromas and 18 MPNSTs. sixteen out of twenty-two vestibular schwannomas (73%), nine out of ten plexiform neurofibromas (90%) and six out of eighteen MPNST (33%) expressed BCRP in the vasculature. Tumor cells were negative. BCRP is present in the vasculature of vestibular schwannomas, plexiform neurofibromas and MPSNT. Therefore, it may reduce the drug exposure of underlying tumor tissues and potentially cause failure of drug therapy.
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发表时间: 2007-11-01
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