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细胞中的大象:核力学与机械生物学。

The Elephant in the Cell: Nuclear Mechanics and Mechanobiology.

机构信息

Clinical Insights, Ltd, 60 Summer Duck Way, Pittsburgh, PA 15238.

Department of Chemical Engineering, Carnegie Mellon University, Doherty Hall, 5000 Forbes Avenue, Pittsburgh, PA 15213; Forensics Department, Thornton Tomasetti, 120 Broadway 15th Floor, New York City, NY 10271.

出版信息

J Biomech Eng. 2022 Aug 1;144(8). doi: 10.1115/1.4053797.

DOI:10.1115/1.4053797
PMID:35147160
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8990742/
Abstract

The 2021 Summer Biomechanics, Bioengineering, and Biotransport Conference (SB3C) featured a workshop titled "The Elephant in the Room: Nuclear Mechanics and Mechanobiology." The goal of this workshop was to provide a perspective from experts in the field on the current understanding of nuclear mechanics and its role in mechanobiology. This paper reviews the major themes and questions discussed during the workshop, including historical context on the initial methods of measuring the mechanical properties of the nucleus and classifying the primary structures dictating nuclear mechanics, physical plasticity of the nucleus, the emerging role of the linker of nucleoskeleton and cytoskeleton (LINC) complex in coupling the nucleus to the cytoplasm and driving the behavior of individual cells and multicellular assemblies, and the computational models currently in use to investigate the mechanisms of gene expression and cell signaling. Ongoing questions and controversies, along with promising future directions, are also discussed.

摘要

2021 年夏生物力学、生物工程和生物传输会议(SB3C)的一个特色是举办了一场题为“房间里的大象:核力学和机械生物学”的研讨会。本次研讨会的目标是从该领域的专家那里提供对核力学当前理解及其在机械生物学中的作用的观点。本文回顾了研讨会期间讨论的主要主题和问题,包括最初用于测量核机械性能并对决定核力学的主要结构进行分类的方法的历史背景、核的物理可塑性、核骨架和细胞骨架连接体(LINC)复合物在将核与细胞质连接并驱动单个细胞和多细胞组合行为方面的新兴作用,以及目前用于研究基因表达和细胞信号转导机制的计算模型。还讨论了正在出现的问题和争议,以及有前途的未来方向。

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本文引用的文献

1
Viscous shaping of the compliant cell nucleus.顺应性细胞核的粘性塑形
APL Bioeng. 2022 Jan 4;6(1):010901. doi: 10.1063/5.0071652. eCollection 2022 Mar.
2
Nuclear deformation guides chromatin reorganization in cardiac development and disease.核形变指导心脏发育和疾病中的染色质重排。
Nat Biomed Eng. 2021 Dec;5(12):1500-1516. doi: 10.1038/s41551-021-00823-9. Epub 2021 Dec 2.
3
The LINC complex is required for endothelial cell adhesion and adaptation to shear stress and cyclic stretch.LINC 复合物对于内皮细胞黏附和适应切应力及循环拉伸是必需的。
Mol Biol Cell. 2021 Aug 19;32(18):1654-1663. doi: 10.1091/mbc.E20-11-0698. Epub 2021 Jun 30.
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Mechanical Forces in Nuclear Organization.机械力在核组织中的作用。
Cold Spring Harb Perspect Biol. 2022 Jan 4;14(1):a039685. doi: 10.1101/cshperspect.a039685.
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Recursive feedback between matrix dissipation and chemo-mechanical signaling drives oscillatory growth of cancer cell invadopodia.矩阵耗散和化学生物机械信号之间的递归反馈驱动癌细胞侵袭伪足的振荡生长。
Cell Rep. 2021 Apr 27;35(4):109047. doi: 10.1016/j.celrep.2021.109047.
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Imaging methods in mechanosensing: a historical perspective and visions for the future.力学感知中的成像方法:历史透视与未来展望。
Mol Biol Cell. 2021 Apr 19;32(9):842-854. doi: 10.1091/mbc.E20-10-0671. Epub 2021 Mar 31.
7
The LINC complex transmits integrin-dependent tension to the nuclear lamina and represses epidermal differentiation.LINC 复合物将整合素依赖性张力传递到核层并抑制表皮分化。
Elife. 2021 Mar 29;10:e58541. doi: 10.7554/eLife.58541.
8
Nuclear envelope wrinkling predicts mesenchymal progenitor cell mechano-response in 2D and 3D microenvironments.核膜皱缩可预测二维和三维微环境中间充质祖细胞的力学响应。
Biomaterials. 2021 Mar;270:120662. doi: 10.1016/j.biomaterials.2021.120662. Epub 2021 Jan 19.
9
The nuclear piston activates mechanosensitive ion channels to generate cell migration paths in confining microenvironments.核活塞激活机械敏感离子通道,以在受限微环境中生成细胞迁移路径。
Sci Adv. 2021 Jan 8;7(2). doi: 10.1126/sciadv.abd4058. Print 2021 Jan.
10
Image-Based Elastography of Heterochromatin and Euchromatin Domains in the Deforming Cell Nucleus.基于图像的变形细胞核异染色质和常染色质区域的弹性成像。
Small. 2021 Feb;17(5):e2006109. doi: 10.1002/smll.202006109. Epub 2021 Jan 15.