稳定急性髓性白血病细胞的蛋白质组:对癌症蛋白质组的影响
Robert W Sprung1, Qiang Zhang1, Michael H Kramer2
1Division of Endocrinology, Metabolism, and Lipid Research, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.
Molecular & cellular proteomics : MCP
|January 14, 2024
概括
抑制像中性粒细胞弹性酶 (ELANE) 这样的髓状血清蛋白酶对于准确的蛋白质组分析至关重要. 阻断这些酶可以防止蛋白质降解,并改善髓状细胞样本中的定量测量.
科学领域:
- 生物化学 生化学
- 蛋白质组学是指蛋白质组学.
- 细胞生物学 细胞生物学
背景情况:
- 骨髓状细胞释放可以降解蛋白质的血清蛋白酶 (例如,ELANE,PRTN3,CTSG).
- 准确的定量蛋白质组分析需要稳定髓状细胞内的蛋白质.
研究的目的:
- 为了调查是否抑制髓质细胞血清蛋白酶是必要的髓质细胞的定量蛋白质组分析.
- 为了确定血清蛋白酶抑制对蛋白质组数据质量的影响.
主要方法:
- 急性髓性白血病细胞在使用或不使用化二基酸盐 (DFP),一种血清蛋白酶抑制剂时被解.
- 全球蛋白质组分析使用无标签和异酸标签量化进行.
- 通过对其活性部位的二醇酸修饰来评估ELANE的活性.
主要成果:
- DFP治疗增加了三性 (14-57%) 和蛋白质 (9-31%).
- 在未经处理的样本中,11-31%的强度是非性,归因于ELANE-PRTN3活性.
- DFP将非性强度降低到4-8%,并将ELANE抑制到95%.
结论:
- 在样本处理过程中释放的活性髓状血清蛋白酶可以显著改变定量蛋白质组测量.
- 在固体瘤蛋白质组数据集中存在ELANE活性,影响样本与髓质透.
- 通过髓质蛋白酶进行体外裂变对于透到髓质细胞的瘤的蛋白质学研究具有重要意义.
更多相关视频
10:18From a 2DE-Gel Spot to Protein Function: Lesson Learned From HS1 in Chronic Lymphocytic Leukemia
Published on: October 19, 2014
13.7K
09:01Flow Cytometry to Estimate Leukemia Stem Cells in Primary Acute Myeloid Leukemia and in Patient-derived-xenografts, at Diagnosis and Follow Up
Published on: March 26, 2018
14.0K
相关概念视频
Differentiation of Common Myeloid Progenitor Cells
3.2K
Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
3.2K
Drugs that Stabilize Microtubules
2.0K
Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...
2.0K
