1
|
Yao Q, Li L, Huang X, Li H, Fang Y, Xia J, Fan J, Chen L, Wang J, Peng X. Photostable Fluorescent Tracker for Imaging Mitochondria with Super Resolution. Anal Chem 2019; 91:15777-15783. [PMID: 31718148 DOI: 10.1021/acs.analchem.9b04065] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The power factories in cells, mitochondria, play important roles in all physiological processes. It is reported that progressive mitochondrial swelling and outer mitochondrial membrane rupture could be induced by a wide variety of apoptotic and necrotic stimuli. Regrettably, although a variety of mitochondrial probes have been developed, most of them are based on the detection of active species in mitochondria. Probes that can monitor the status and distribution of mitochondria for a long time are still urgently needed. In this study, a fluorescent sensor with excellent properties, EtNBEn, is described. Outstanding performance allows it to be observed not only in cells but also in living Daphnia and zebrafish under confocal microscopy for a long time. Moreover, the swelling process of mitochondria under light stimulation is also visualized under super-resolution (SR) microscopy. All these results suggest that EtNBEn could be employed for tagging mitochondria in various physiological processes, which makes a great contribution to the cure of diseases.
Collapse
Affiliation(s)
- Qichao Yao
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
| | - Liuju Li
- Institute of Molecular Medicine , Peking University , 100871 Beijing , P. R. China
| | - Xiaoshuai Huang
- Institute of Molecular Medicine , Peking University , 100871 Beijing , P. R. China
| | - Haidong Li
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
| | - Yanyun Fang
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
| | - Jing Xia
- Department School of Life Science and Biotechnology , Dalian University of Technology , 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
| | - Jiangli Fan
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
| | - Liangyi Chen
- Institute of Molecular Medicine , Peking University , 100871 Beijing , P. R. China
| | - Jingyun Wang
- Department School of Life Science and Biotechnology , Dalian University of Technology , 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
| |
Collapse
|
2
|
Park K, Nikapitiya C, Kim WS, Kwak TS, Kwak IS. Changes of exoskeleton surface roughness and expression of crucial participation genes for chitin formation and digestion in the mud crab (Macrophthalmus japonicus) following the antifouling biocide irgarol. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 132:186-195. [PMID: 27318560 DOI: 10.1016/j.ecoenv.2016.06.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 06/03/2016] [Accepted: 06/06/2016] [Indexed: 06/06/2023]
Abstract
Irgarol is a common antifoulant present in coastal sediment. The mud crab Macrophthalmus japonicus is one of the most abundant of the macrobenthos in the costal environment, and its exoskeleton has a protective function against various environmental threats. We evaluated the effects of irgarol toxicity on the exoskeleton of M. japonicus, which is the outer layer facing the environment. We analyzed transcriptional expression of exoskeleton, molting, and proteolysis-related genes in the gill and hepatopancreas of these exposed M. japonicus. In addition, changes in survival and exoskeleton surface characteristics were investigated. In the hepatopancreas, mRNA expression of chitinase 1 (Mj-chi1), chitinase 4 (Mj-chi4), and chitinase 5 (Mj-chi5) increased in M. japonicus exposed to all concentrations of irgarol. Mj-chi1 and Mj-chi4 expressions from 1 to 10μgL(-1) were dose- and time-dependent. Ecdysteroid receptor (Mj-EcR), trypsin (Mj-Tryp), and serine proteinase (Mj-SP) in the hepatopancreas were upregulated in response to different exposure levels of irgarol at day 1, 4, or 7. In contrast, gill Mj-chi5, Mj-Tryp, and Mj-SP exhibited late upregulated responses to 10μgL(-1) irgarol compared to the control at day 7. Mj-chi1 showed early upregulation upon exposure to 10μgL(-1) irgarol and Mj-chi4 showed no changes in transcription in the gill. Gill Mj-EcR presented generally downregulated expression patterns. In addition, decreased survival and change of exoskeleton surface roughness were observed in M. japonicus exposed to the three concentrations of irgarol. These results suggest that exposure to irgarol induces changes in the exoskeleton, molting, and proteolysis metabolism of M. japonicus.
Collapse
Affiliation(s)
- Kiyun Park
- Faculty of Marine Technology, Chonnam National University, Chonnam 550-749, South Korea
| | - Chamilani Nikapitiya
- Faculty of Marine Technology, Chonnam National University, Chonnam 550-749, South Korea; Department of Aqualife Medicine, Chonnam National University, Chonnam 550-749, South Korea
| | - Won-Seok Kim
- Faculty of Marine Technology, Chonnam National University, Chonnam 550-749, South Korea
| | - Tae-Soo Kwak
- Department of Mechanical Engineering, GNTECH, Gyeongnam 660-758, South Korea
| | - Ihn-Sil Kwak
- Faculty of Marine Technology, Chonnam National University, Chonnam 550-749, South Korea.
| |
Collapse
|
3
|
Wang L, Liang B, Li L, Liu W. Induction of HepG2 cell apoptosis by Irgarol 1051 through mitochondrial dysfunction and oxidative stresses. Toxicol In Vitro 2013; 27:1771-9. [DOI: 10.1016/j.tiv.2013.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 04/11/2013] [Accepted: 05/19/2013] [Indexed: 11/30/2022]
|
4
|
Anderson LK, Stack SM. Recombination nodules in plants. Cytogenet Genome Res 2005; 109:198-204. [PMID: 15753577 DOI: 10.1159/000082400] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2003] [Accepted: 03/28/2004] [Indexed: 11/19/2022] Open
Abstract
The molecular events of recombination are thought to be catalyzed by proteins present in recombination nodules (RNs). Therefore, studying RN structure and function should give insights into the processes by which meiotic recombination is regulated in eukaryotes. Two types of RNs have been identified so far, early (ENs) and late (LNs). ENs appear at leptotene and persist into early pachytene while LNs appear in pachytene and remain into early diplotene. ENs and LNs can be distinguished not only on their time of appearance, but also by such characteristics as shape and size, relative numbers, and association with unsynapsed and/or synapsed chromosomal segments. The function(s) of ENs is not clear, but they may have a role in searching for DNA homology, synapsis, gene conversion and/or crossing over. LNs are well correlated with crossing over. Here, the patterns of ENs and LNs during prophase I in plants are reviewed.
Collapse
Affiliation(s)
- L K Anderson
- Department of Biology, Colorado State University, Fort Collins, CO 80523-1878, USA.
| | | |
Collapse
|