Label-free mitochondrial dynamics analysis during cell death using organelle-specific phase contrast microscopy (OS-PCM).

IF 2.9 2区 医学 Q2 BIOCHEMICAL RESEARCH METHODS
Biomedical optics express Pub Date : 2025-03-26 eCollection Date: 2025-04-01 DOI:10.1364/BOE.557745
Jingde Fang, Hao Zhang, Zachary J Smith, Kaiqin Chu
{"title":"Label-free mitochondrial dynamics analysis during cell death using organelle-specific phase contrast microscopy (OS-PCM).","authors":"Jingde Fang, Hao Zhang, Zachary J Smith, Kaiqin Chu","doi":"10.1364/BOE.557745","DOIUrl":null,"url":null,"abstract":"<p><p>Mitochondria plays an important role in cell death and undergoes dramatic changes in states of disequilibrium. As mitochondria respond sensitively to cell stress, their dynamics should be studied without affecting cell state. However, current methods rely on labeling cells with fluorescence and introduce additional stress to the cell due to photobleaching and phototoxicity. Here, we propose to use label-free organelle-specific phase contrast microscopy (OS-PCM) to achieve prolonged, specific observation and quantitative analysis of mitochondria dynamics during cell death with minimum perturbation to cells. Using apoptosis and ferroptosis as two examples of cell death, we show quantitatively that large mitochondria tend to increase in size through a combination of swelling and fusion in response to apoptosis, while they decrease in size through fission during ferroptosis. These results provide a new and deeper understanding of mitochondrial dynamics during cell death and demonstrate that OS-PCM is a powerful tool for the gentle, facile, and quantitative study of delicate organelles under stress.</p>","PeriodicalId":8969,"journal":{"name":"Biomedical optics express","volume":"16 4","pages":"1602-1615"},"PeriodicalIF":2.9000,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12047718/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biomedical optics express","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1364/BOE.557745","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"BIOCHEMICAL RESEARCH METHODS","Score":null,"Total":0}
引用次数: 0

Abstract

Mitochondria plays an important role in cell death and undergoes dramatic changes in states of disequilibrium. As mitochondria respond sensitively to cell stress, their dynamics should be studied without affecting cell state. However, current methods rely on labeling cells with fluorescence and introduce additional stress to the cell due to photobleaching and phototoxicity. Here, we propose to use label-free organelle-specific phase contrast microscopy (OS-PCM) to achieve prolonged, specific observation and quantitative analysis of mitochondria dynamics during cell death with minimum perturbation to cells. Using apoptosis and ferroptosis as two examples of cell death, we show quantitatively that large mitochondria tend to increase in size through a combination of swelling and fusion in response to apoptosis, while they decrease in size through fission during ferroptosis. These results provide a new and deeper understanding of mitochondrial dynamics during cell death and demonstrate that OS-PCM is a powerful tool for the gentle, facile, and quantitative study of delicate organelles under stress.

使用细胞器特异性相衬显微镜(OS-PCM)分析细胞死亡过程中无标记线粒体动力学。
线粒体在细胞死亡中起重要作用,在不平衡状态下发生剧烈变化。由于线粒体对细胞应激反应敏感,因此应在不影响细胞状态的情况下研究其动力学。然而,目前的方法依赖于用荧光标记细胞,并且由于光漂白和光毒性而向细胞引入额外的应力。在这里,我们建议使用无标记细胞器特异性相衬显微镜(OS-PCM)来实现细胞死亡期间线粒体动力学的长时间、特异性观察和定量分析,同时对细胞的扰动最小。以细胞凋亡和铁下垂为例,我们定量地表明,在细胞凋亡的反应中,大的线粒体倾向于通过肿胀和融合的结合来增加大小,而在铁下垂过程中,它们通过裂变来减少大小。这些结果为细胞死亡过程中线粒体动力学提供了新的和更深入的理解,并证明OS-PCM是一种强大的工具,可以对应激下的精细细胞器进行温和、简便和定量的研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Biomedical optics express
Biomedical optics express BIOCHEMICAL RESEARCH METHODS-OPTICS
CiteScore
6.80
自引率
11.80%
发文量
633
审稿时长
1 months
期刊介绍: The journal''s scope encompasses fundamental research, technology development, biomedical studies and clinical applications. BOEx focuses on the leading edge topics in the field, including: Tissue optics and spectroscopy Novel microscopies Optical coherence tomography Diffuse and fluorescence tomography Photoacoustic and multimodal imaging Molecular imaging and therapies Nanophotonic biosensing Optical biophysics/photobiology Microfluidic optical devices Vision research.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信