Characterization of multiple myeloma vesicles by label-free relative quantitation.

Characterization of multiple myeloma vesicles by label-free relative quantitation.
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通过无标签的相对定量来表征多发性骨髓瘤。

DOI:
10.1002/pmic.201300142
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发表时间:
2013-10
期刊:
影响因子:
3.4
通讯作者:
Pichiorri, Flavia
Pichiorri, Flavia
中科院分区:
生物学3区
文献类型:
--
作者:
Harshman, Sean W.;Canella, Alessandro;Ciarlariello, Paul D.;Rocci, Alberto;Agarwal, Kitty;Smith, Emily M.;Talabere, Tiffany;Efebera, Yvonne A.;Hofmeister, Craig C.;Benson, Don M., Jr.;Paulaitis, Michael E.;Freitas, Michael A.;Pichiorri, Flavia

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多发性骨髓瘤 (MM) 是一种血液恶性肿瘤,由骨髓中浆细胞在微环境辅助下持续存在而引起。 MM 细胞释放的细胞外囊泡、微泡和外泌体在骨髓中细胞间通讯和信号传导中的作用目前尚不清楚。本文描述了源自 MM.1S 和 U266 MM 细胞系的细胞外囊泡的蛋白质组含量。首先,我们比较了每个细胞系的囊泡和细胞裂解物之间的蛋白质鉴定,发现蛋白质鉴定存在很大的重叠。接下来,我们应用无标记光谱计数定量来确定各组之间具有差异丰度的蛋白质。最后,我们使用生物信息学将丰度显着不同的蛋白质分类为功能组。结果说明首次使用无标记光谱计数来确定细胞外囊泡中的相对蛋白质丰度。
Multiple myeloma (MM) is a hematological malignancy caused by a microenviromentally aided persistence of plasma cells in the bone marrow. The role that extracellular vesicles, microvesicles and exosomes, released by MM cells have in cell-to-cell communication and signaling in the bone marrow is currently unknown. This paper describes the proteomic content of extracellular vesicles derived from MM.1S and U266 MM cell lines. First, we compared the protein identifications between the vesicles and cellular lysates of each cell line finding a large overlap in protein identifications. Next, we applied label-free spectral count quantitation to determine proteins with differential abundance between the groups. Finally, we used bioinformatics to categorize proteins with significantly different abundances into functional groups. The results illustrate the first use of label-free spectral counting applied to determine relative protein abundances in extracellular vesicles.
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