A myristoylated alanine-rich C-kinase substrate (MARCKS) inhibitor peptide attenuates neutrophil outside-in β2-integrin activation and signaling.

IF 3.3 3区 生物学 Q3 CELL BIOLOGY
Haleigh Conley, Rebecca L Till, Alix K Berglund, Samuel L Jones, M Katie Sheats
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引用次数: 0

Abstract

MARCKS is an actin and PIP2-binding protein that plays an essential role in neutrophil migration and adhesion; however, the molecular details regarding MARCKS function in these processes remains unclear. Neutrophil adhesion and migration also require the cell surface receptors β2-integrins. We hypothesized that MARCKS inhibition would alter neutrophil β2-integrin activation and signaling. We utilized a MARCKS-targeting peptide to inhibit MARCKS in inside-out and outside-in β2-integrin activation in neutrophils. MANS-mediated MARCKS inhibition had no significant effect on inside-out β2-integrin activation. MANS treatment significantly attenuated ICAM-1/Mn2+-stimulated static adhesion, cell spreading and β2-integrin clustering, suggesting a role for MARCKS function in outside-in β2-integrin activation. Additional work is needed to better understand the molecular mechanisms of MARCKS role in outside-in β2-integrin activation and signaling.

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肉豆蔻酰化富含丙氨酸的C激酶底物(MARCKS)抑制剂肽在β2-整合素激活和信号传导中减弱中性粒细胞。
MARCKS是一种肌动蛋白和PIP2结合蛋白,在中性粒细胞迁移和粘附中发挥重要作用;然而,关于MARCKS在这些过程中的作用的分子细节仍不清楚。中性粒细胞的粘附和迁移也需要细胞表面受体β2-整合素。我们假设MARCKS抑制会改变中性粒细胞β2-整合素的激活和信号传导。我们利用MARCKS靶向肽抑制中性粒细胞中由内而外和由外而外的β2-整合素激活。MANS介导的MARCKS抑制对由内而外的β2-整合素激活没有显著影响。MANS处理显著减弱了ICAM-1/Mn2+刺激的静态粘附、细胞扩散和β2-整合素聚集,表明MARCKS在β2-整合素激活中的作用。需要更多的工作来更好地理解MARCKS在β2-整合素激活和信号传导中的外部作用的分子机制。
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来源期刊
CiteScore
6.40
自引率
0.00%
发文量
7
审稿时长
53 weeks
期刊介绍: Cell Adhesion & Migration is a multi-disciplinary, peer reviewed open access journal that focuses on the biological or pathological implications of cell-cell and cell-microenvironment interactions. The main focus of this journal is fundamental science. The journal strives to serve a broad readership by regularly publishing review articles covering specific disciplines within the field, and by publishing focused issues that provide an overview on specific topics of interest within the field. Cell Adhesion & Migration publishes relevant and timely original research, as well as authoritative overviews, commentaries, and perspectives, providing context for the work presented in Cell Adhesion & Migration and for key results published elsewhere. Original research papers may cover all topics important in the field of cell-cell and cell-matrix interactions. Cell Adhesion & Migration also publishes articles related to cell biomechanics, biomaterial, and development of related imaging technologies.
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