CD271 决定黑色素瘤细胞的迁移特性。

CD271 determines migratory properties of melanoma cells.

机构信息

German Consortium for Translational Cancer Research (DKTK), German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, D-69120, Heidelberg, Germany.

Department of Neuropathology, Berlin, Germany.

出版信息

Sci Rep. 2017 Aug 29;7(1):9834. doi: 10.1038/s41598-017-10129-z.

Abstract

Melanoma cell expression of the nerve growth factor receptor CD271 is associated with stem-like properties. However, the contributing role of the receptor in melanoma cell migration is elusive. Here, we explored extracranial (skin, soft tissue, lymph node and liver, n = 13) and matched brain metastases (BM, n = 12) and observed a heterogeneous distribution of phenotypically distinct subsets of CD271 cells. In addition, we observed that CD271 expression gradually rises along with melanoma progression and metastasis by exploration of publicly available expression data of nevi, primary melanoma (n = 31) and melanoma metastases (n = 54). Furthermore, we observed highest levels of CD271 in BM. Sub-clustering identified 99 genes differentially expressed among CD271 and CD271 (p < 0.05) BM-subgroups. Comparative analysis of subsets revealed increased ( ≥ 1.5fold, log2) expression of migration-associated genes and enrichment of CD271-responsible genes involved in DNA-repair and stemness. Live cell-imaging based scratch-wound assays of melanoma cells with stable knock-down of CD271 revealed a significantly reduced cell migration (3.9fold, p = 1.2E-04) and a reduced expression of FGF13, CSPG4, HMGA2 and AKT3 major candidate regulatory genes of melanoma cell migration. In summary, we provide new insights in melanoma cell migration and suggest that CD271 serves as a candidate regulator, sufficient to determine cellular properties of melanoma brain metastatic cells.

摘要

黑色素瘤细胞表达神经生长因子受体 CD271 与干细胞样特性相关。然而,该受体在黑色素瘤细胞迁移中的作用仍不清楚。在此,我们研究了颅外(皮肤、软组织、淋巴结和肝脏,n=13)和配对的脑转移瘤(BM,n=12),并观察到 CD271 细胞表现出不同表型的异质性分布。此外,我们通过探索黑色素痣、原发性黑色素瘤(n=31)和黑色素瘤转移灶(n=54)的公开表达数据,观察到 CD271 表达随着黑色素瘤的进展和转移而逐渐升高。此外,我们发现 CD271 在 BM 中的表达水平最高。亚聚类鉴定出 CD271 和 CD271(p<0.05)BM 亚群之间有 99 个差异表达的基因。对亚群的比较分析显示,迁移相关基因的表达增加(≥1.5 倍,log2),并且富集了与 CD271 相关的负责 DNA 修复和干性的基因。基于稳定敲低 CD271 的黑色素瘤细胞的划痕伤口试验的活细胞成像显示,细胞迁移显著减少(3.9 倍,p=1.2E-04),并且 FGF13、CSPG4、HMGA2 和 AKT3 等黑色素瘤细胞迁移的主要候选调节基因的表达减少。总之,我们提供了黑色素瘤细胞迁移的新见解,并表明 CD271 可作为候选调节剂,足以决定黑色素瘤脑转移细胞的细胞特性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d6dc/5574914/4fa4c29b6b05/41598_2017_10129_Fig1_HTML.jpg

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