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Dou M, Jiao YH, Zheng JW, Zhang G, Li HY, Liu JS, Yang WD. De novo transcriptome analysis of the mussel Perna viridis after exposure to the toxic dinoflagellate Prorocentrum lima. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 192:110265. [PMID: 32045784 DOI: 10.1016/j.ecoenv.2020.110265] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/23/2020] [Accepted: 01/29/2020] [Indexed: 06/10/2023]
Abstract
Diarrheic shellfish poisoning (DSP) toxins are produced by harmful microalgae and accumulate in bivalve mollusks, causing various toxicity. These toxic effects appear to abate with increasing DSP concentration and longer exposure time, however, the underlying mechanisms remain unclear. To explore the underlying molecular mechanisms, de novo transcriptome analysis of the digestive gland of Perna viridis was performed after Prorocentrum lima exposure. RNA-seq analysis showed that 1886 and 237 genes were up- and down-regulated, respectively after 6 h exposure to P. lima, while 265 genes were up-regulated and 217 genes were down-regulated after 96 h compared to the control. These differentially expressed genes mainly involved in Nrf2 signing pathways, immune stress, apoptosis and cytoskeleton, etc. Combined with qPCR results, we speculated that the mussel P. viridis might mainly rely on glutathione S-transferase (GST) and ABC transporters to counteract DSP toxins during short-term exposure. However, longer exposure of P. lima could activate the Nrf2 signaling pathway and inhibitors of apoptosis protein (IAP), which in turn reduced the damage of DSP toxins to the mussel. DSP toxins could induce cytoskeleton destabilization and had some negative impact on the immune system of bivalves. Collectively, our findings uncovered the crucial molecular mechanisms and the regulatory metabolic nodes that underpin the defense mechanism of bivalves against DSP toxins and also advanced our current understanding of bivalve defense mechanisms.
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Affiliation(s)
- Min Dou
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, China.
| | - Yu-Hu Jiao
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, China
| | - Jian-Wei Zheng
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, China
| | - Gong Zhang
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Hong-Ye Li
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, China
| | - Jie-Sheng Liu
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, China
| | - Wei-Dong Yang
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, China.
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Hwang W, Yoo J, Hwang I, Lee J, Ko YH, Kim HW, Kim Y, Lee Y, Hur MY, Park KM, Seo J, Baek K, Kim K. Hierarchical Self‐Assembly of Poly‐Pseudorotaxanes into Artificial Microtubules. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wooseup Hwang
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Jejoong Yoo
- Center for Self-assembly and Complexity (CSC)Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - In‐Chul Hwang
- Center for Self-assembly and Complexity (CSC)Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Jiyeon Lee
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Young Ho Ko
- Center for Self-assembly and Complexity (CSC)Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Hyun Woo Kim
- Center for Self-assembly and Complexity (CSC)Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Younghoon Kim
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Yeonsang Lee
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Moon Young Hur
- Center for Self-assembly and Complexity (CSC)Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Kyeng Min Park
- Center for Self-assembly and Complexity (CSC)Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Jongcheol Seo
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Kangkyun Baek
- Center for Self-assembly and Complexity (CSC)Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Kimoon Kim
- Center for Self-assembly and Complexity (CSC)Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
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During mitosis ZEB1 "switches" from being a chromatin-bound epithelial gene repressor, to become a microtubule-associated protein. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118673. [PMID: 32057919 DOI: 10.1016/j.bbamcr.2020.118673] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 01/30/2020] [Accepted: 02/02/2020] [Indexed: 12/23/2022]
Abstract
Microtubules are polymers of α/β-tubulin, with microtubule organization being regulated by microtubule-associated proteins (MAPs). Herein, we describe a novel role for the epithelial gene repressor, zinc finger E-box-binding homeobox 1 (ZEB1), that "switches" from a chromatin-associated protein during interphase, to a MAP that associates with α-, β- and γ-tubulin during mitosis. Additionally, ZEB1 was also demonstrated to associate with γ-tubulin at the microtubule organizing center (MTOC). Using confocal microscopy, ZEB1 localization was predominantly nuclear during interphase, with α/β-tubulin being primarily cytoplasmic and the association between these proteins being minimal. However, during the stages of mitosis, ZEB1 co-localization with α-, β-, and γ-tubulin was significantly increased, with the association commonly peaking during metaphase in multiple tumor cell-types. ZEB1 was also observed to accumulate in the cleavage furrow during cytokinesis. The increased interaction between ZEB1 and α-tubulin during mitosis was also confirmed using the proximity ligation assay. In contrast to ZEB1, its paralog ZEB2, was mainly perinuclear and cytoplasmic during interphase, showing some co-localization with α-tubulin during mitosis. Considering the association between ZEB1 with α/β/γ-tubulin during mitosis, studies investigated ZEB1's role in the cell cycle. Silencing ZEB1 resulted in a G2-M arrest, which could be mediated by the up-regulation of p21Waf1/Cip1 and p27Kip1 that are known downstream targets repressed by ZEB1. However, it cannot be excluded the G2/M arrest observed after ZEB1 silencing is not due to its roles as a MAP. Collectively, ZEB1 plays a role as a MAP during mitosis and could be functionally involved in this process.
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Bai L, Fei WD, Gu YY, He M, Du F, Zhang WY, Yang LL, Liu YJ. Liposomes encapsulated iridium(III) polypyridyl complexes enhance anticancer activity in vitro and in vivo. J Inorg Biochem 2020; 205:111014. [PMID: 32044395 DOI: 10.1016/j.jinorgbio.2020.111014] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/22/2020] [Accepted: 01/27/2020] [Indexed: 12/11/2022]
Abstract
Three iridium(III) complexes [Ir(ppy)2(CPIP)](PF6) (Ir-1, ppy = 2-phenylpyridine, CPIP = 2-(4-chlorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline), [Ir(ppy)2(DCPIP)](PF6) (Ir-2, DCPIP = 2-(3,4-dichlorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline) and [Ir(ppy)2(TCPIP)](PF6) (Ir-3, TCPIP = 2,3,5-trichlorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline) were synthesized and characterized. The complexes Ir-1, Ir-2 and Ir-3 were encapsulated in liposomes to form Ir-1-Lipo, Ir-2-Lipo and Ir-3-Lipo. Morphology, size distribution, and zeta potential of liposomes were examined by transmission electron microscopy (TEM) and Zetasizer. The cytotoxic activity in vitro of Ir-1, Ir-2 and Ir-3 against cancer A549, HTC-116, HepG2, BEL-7402, Eca-109, B16, HeLa SGC-7901 and normal NIH3T3 cells was evaluated by 3-(4,5-dimethylthiazole-2-yl)-2,5-biphenyl tetrazolium bromide (MTT) method. Ir-2 and Ir-3 show no cytotoxic activity against the selected cancer cells, and Ir-1 displays moderate cytotoxic effect on the cell growth in A549 cells. However, Ir-1, Ir-2 and Ir-3 were encapsulated in liposomes, the cytotoxic activity was greatly enhanced. In particular, Ir-1-Lipo and Ir-2-Lipo can effectively inhibit the cell growth in A549 cells with a low IC50 value of 3.1 ± 0.3 and 1.2 ± 0.4 μM. The apoptosis was assayed by flow cytometry. Ir-1, Ir-2 and Ir-3 reveal weak apoptotic effect, whereas Ir-1-Lipo, Ir-2-Lipo and Ir-3-Lipo induce an apoptotic percentage of 55.6%, 69.3% and 16.7% in A549 cells, respectively. Specially, in the assay of antitumor activity in vivo, the inhibiting percentage of tumor growth induced by Ir-2 is 27.65%, while inhibiting percentage of tumor growth caused by Ir-2-Lipo is 57.45%. Obviously, the liposomes can enhance anticancer activity in vitro and in vivo compared with the complexes. The results show that the iridium(III) complexes encapsulated liposomes induce apoptosis in A549 cells through ROS-mediated lysosome-mitochondria dysfunction pathway and target the microtubules.
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Affiliation(s)
- Lan Bai
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Wei-Dong Fei
- Department of Pharmacy, Women's Hospital, Zhejiang University School of Medicine, Hangzhou 310006, PR China
| | - Yi-Ying Gu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Miao He
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Fan Du
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Wen-Yao Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Lin-Lin Yang
- Department of Pediatrics, Guangdong Women and Children Hospital, Guangzhou 510000, PR China.
| | - Yun-Jun Liu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China.
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55
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Hwang W, Yoo J, Hwang IC, Lee J, Ko YH, Kim HW, Kim Y, Lee Y, Hur MY, Park KM, Seo J, Baek K, Kim K. Hierarchical Self-Assembly of Poly-Pseudorotaxanes into Artificial Microtubules. Angew Chem Int Ed Engl 2020; 59:3460-3464. [PMID: 31863556 DOI: 10.1002/anie.201913384] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 12/20/2019] [Indexed: 12/14/2022]
Abstract
Hierarchical self-assembly of building blocks over multiple length scales is ubiquitous in living organisms. Microtubules are one of the principal cellular components formed by hierarchical self-assembly of nanometer-sized tubulin heterodimers into protofilaments, which then associate to form micron-length-scale, multi-stranded tubes. This peculiar biological process is now mimicked with a fully synthetic molecule, which forms a 1:1 host-guest complex with cucurbit[7]uril as a globular building block, and then polymerizes into linear poly-pseudorotaxanes that associate laterally with each other in a self-shape-complementary manner to form a tubular structure with a length over tens of micrometers. Molecular dynamic simulations suggest that the tubular assembly consists of eight poly-pseudorotaxanes that wind together to form a 4.5 nm wide multi-stranded tubule.
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Affiliation(s)
- Wooseup Hwang
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Jejoong Yoo
- Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea
| | - In-Chul Hwang
- Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea
| | - Jiyeon Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Young Ho Ko
- Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea
| | - Hyun Woo Kim
- Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea
| | - Younghoon Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Yeonsang Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Moon Young Hur
- Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea
| | - Kyeng Min Park
- Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea
| | - Jongcheol Seo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Kangkyun Baek
- Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea
| | - Kimoon Kim
- Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea.,Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
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Serra E, Gadau SD, Berlinguer F, Naitana S, Succu S. Morphological features and microtubular changes in vitrified ovine oocytes. Theriogenology 2019; 148:216-224. [PMID: 31735434 DOI: 10.1016/j.theriogenology.2019.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 10/31/2019] [Accepted: 11/09/2019] [Indexed: 01/06/2023]
Abstract
Cryobanking of oocytes collected from prepubertal donors may supply a virtually unlimited number of female gametes for both basic research and commercial applications. Prepubertal oocytes show some structural and functional limitations compared to the adult ones that may impair their ability to recover damages from cryopreservation. In oocytes, the meiotic spindle is acutely sensitive to temperature deviation, but capable of regeneration following cryopreservation. In the present work, we studied the effects of vitrification and post-warming incubation on the microtubular cytoskeleton and the tubulin post-translational modifications (tyrosination and acetylation) in prepubertal and adult oocytes. Obtained results showed that prepubertal oocytes are more affected by vitrification-induced injuries than adult ones. In fact, prepubertal oocytes showed more severe alterations of the meiotic spindle conformation and a higher percentage of parthenogenetic activation compared to adult ones. Moreover, in the adult oocytes the equilibrium between tyrosinated and acetylated α-tubulin was restored after 4 h of post-warming incubation. Diversely, in prepubertal oocytes the imbalance between tyrosinated and acetylated α-tubulin was increased during post-warming incubation. Our study shows that prepubertal oocytes react differently to the insults provoked by vitrification compared to adult oocytes, showing an impaired ability to recover from vitrification-induced injuries. In the evaluation of oocyte ability to recover from vitrification-induced injuries, tubulin post-translational modifications represent an important indicator for assessing oocyte quality.
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Affiliation(s)
- Elisa Serra
- Department of Veterinary Medicine, University of Sassari, Italy
| | | | | | | | - Sara Succu
- Department of Veterinary Medicine, University of Sassari, Italy
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57
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Fakhri S, Abbaszadeh F, Jorjani M, Pourgholami MH. The effects of anticancer medicinal herbs on vascular endothelial growth factor based on pharmacological aspects: a review study. Nutr Cancer 2019; 73:1-15. [DOI: 10.1080/01635581.2019.1673451] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Sajad Fakhri
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Fatemeh Abbaszadeh
- Department of Neuroscience, Faculty of Advanced Technologies in Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Masoumeh Jorjani
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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58
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Rafiei A, Schriemer DC. A microtubule crosslinking protocol for integrative structural modeling activities. Anal Biochem 2019; 586:113416. [PMID: 31499019 DOI: 10.1016/j.ab.2019.113416] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/30/2019] [Accepted: 09/05/2019] [Indexed: 11/15/2022]
Abstract
Microtubules (MTs) are key components in the cytoskeleton of the eukaryotic cell, and play roles in processes such as intracellular transport and cell division. An improved understanding MT regulation requires structural analysis of the extensive interactions between the MT lattice and its regulatory proteins, but MT interactions are challenging for even the most advanced structural methods to characterize. Integrative methods involving crosslinking mass spectrometry (XL-MS) can extend structural analysis to many interaction classes, but the representation of MTs in crosslinking data-sets has been surprisingly low. Here, we explore the basis for the underrepresentation of the MT lattice and present an enhanced method for mapping MT structural features using an optimized set of reagents, together with fluorescence detection to ensure MT structural integrity. Through the application of stringent identification criteria, 91 unique crosslinks were identified, 78 of which were uniquely matched to 7 distinct structural features of the MT lattice. Of note, 4 crosslinks were detected for the lattice-A protofilament organization. The lattice-A structure defines a "seam" or discontinuity in MTs and is an emerging site of interest for MT regulation. Our methodology should be broadly applicable to integrative structural studies involving any MT-protein interaction.
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Affiliation(s)
- Atefeh Rafiei
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada
| | - David C Schriemer
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada; Department of Biochemistry and Molecular Biology, University of Calgary, Alberta, Canada.
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Sawada JI, Ishii H, Matsuno K, Sato M, Suzuki Y, Asai A. Selective Inhibition of Spindle Microtubules by a Tubulin-Binding Quinazoline Derivative. Mol Pharmacol 2019; 96:609-618. [PMID: 31471455 DOI: 10.1124/mol.119.116624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 08/20/2019] [Indexed: 02/03/2023] Open
Abstract
In the research field of tubulin-binding agents for the development of anticancer agents, hidden targets are emerging as a problem in understanding the exact mechanisms of actions. The quinazoline derivative 1-(4-methoxyphenyl)-1-(quinazolin-4-yl)ethan-1-ol (PVHD121) has anti-cell proliferative activity and inhibits tubulin polymerization by binding to the colchicine site of tubulin. However, the molecular mechanism of action of PVHD121 in cells remains unclear. Here, we demonstrate that PVHD121 delays mitotic entry and efficiently causes mitotic arrest with spindle checkpoint activation, leading to subsequent cell death. The dominant phenotype induced by PVHD121 was aberrant spindles with robust microtubules and unseparated centrosomes. The microtubules were radially distributed, and their ends appeared to adhere to kinetochores, and not to centrosomes. Extensive inhibition by high concentrations of PVHD121 eliminated all microtubules from cells. PVHD277 [1-(4-methoxyphenyl)-1-(2-morpholinoquinazolin-4-yl)ethan-1-ol], a PVHD121 derivative with fluorescence, tended to localize close to the centrosomes when cells prepared to enter mitosis. Our results show that PVHD121 is an antimitotic agent that selectively disturbs microtubule formation at centrosomes during mitosis. This antimitotic activity can be attributed to the targeting of centrosome maturation in addition to the interference with microtubule dynamics. Due to its unique bioactivity, PVHD121 is a potential tool for studying the molecular biology of mitosis and a potential lead compound for the development of anticancer agents. SIGNIFICANCE STATEMENT: Many tubulin-binding agents have been developed as potential anticancer agents. The aim of this study was to understand the subcellular molecular actions of a quinazoline derivative tubulin-binding agent, 1-(4-methoxyphenyl)-1-(quinazolin-4-yl)ethan-1-ol (PVHD121). As expected from its binding activity to tubulin, PVHD121 caused aberrant spindles and inhibited mitotic progression. However, in addition to tubulin, PVHD121 also targeted an unexpected biomolecule involved in centrosome maturation. Due to targeting the biomolecule just before entering mitosis, PVHD121 preferentially inhibited centrosome-derived microtubules rather than chromosome-derived microtubules during spindle formation. This study not only revealed the molecular action of PVHD121 in cells but also emphasized the importance of considering possible tubulin-independent effects of tubulin-binding agents via hidden targeted biomolecules for future use.
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Affiliation(s)
- Jun-Ichi Sawada
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences (J.-i.S., H.I., K.M., A.A.) and Laboratory of Organic Chemistry, School of Pharmaceutical Sciences (M.S., Y.S.), University of Shizuoka, Shizuoka, Japan
| | - Hirosuke Ishii
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences (J.-i.S., H.I., K.M., A.A.) and Laboratory of Organic Chemistry, School of Pharmaceutical Sciences (M.S., Y.S.), University of Shizuoka, Shizuoka, Japan
| | - Kenji Matsuno
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences (J.-i.S., H.I., K.M., A.A.) and Laboratory of Organic Chemistry, School of Pharmaceutical Sciences (M.S., Y.S.), University of Shizuoka, Shizuoka, Japan
| | - Masayuki Sato
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences (J.-i.S., H.I., K.M., A.A.) and Laboratory of Organic Chemistry, School of Pharmaceutical Sciences (M.S., Y.S.), University of Shizuoka, Shizuoka, Japan
| | - Yumiko Suzuki
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences (J.-i.S., H.I., K.M., A.A.) and Laboratory of Organic Chemistry, School of Pharmaceutical Sciences (M.S., Y.S.), University of Shizuoka, Shizuoka, Japan
| | - Akira Asai
- Center for Drug Discovery, Graduate School of Pharmaceutical Sciences (J.-i.S., H.I., K.M., A.A.) and Laboratory of Organic Chemistry, School of Pharmaceutical Sciences (M.S., Y.S.), University of Shizuoka, Shizuoka, Japan
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60
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TUBB4B Downregulation Is Critical for Increasing Migration of Metastatic Colon Cancer Cells. Cells 2019; 8:cells8080810. [PMID: 31375012 PMCID: PMC6721557 DOI: 10.3390/cells8080810] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/30/2019] [Accepted: 07/30/2019] [Indexed: 12/24/2022] Open
Abstract
Tumor metastasis, the major problem for clinical oncology in colon cancer treatment, is linked with an epithelial-mesenchymal transition (EMT). The observed cellular transformation in this process is manifested by cell elongation, enhanced cell migration and invasion ability, coordinated by cytoskeleton reorganization. In the present study, we examined the role of tubulin-β4 (TUBB4B) downregulation that occurs during EMT in colon cancer cells, in the modulation of the function of microtubules. Based on biochemical and behavioral analysis (transmigration) we posit that the decrease of the TUBB4B level is critical for microtubule-vimentin interaction and contributes to the maintenance of polarity in migrating cells. The microscopic studies revealed that TUBB4B decrease is accompanied by cell elongation and increased number of matured focal adhesion sites, which is a characteristic of the cell metastatic stage. We also demonstrated faster polymerization of microtubules in cells with a lower level of TUBB4B. Simultaneous TUBB3 upregulation, reported during EMT, acts additively in this process. Our studies suggest that the protein level of TUBB4B could be used as a marker for detection of the preinvasive stages of the colon cancer cells. We also concluded that chemotherapy enriched to increase TUBB4B level and/or to stabilize microtubule polymerization might more effectively prevent metastasis in colon cancer development.
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Venkatramani A, Panda D. Regulation of neuronal microtubule dynamics by tau: Implications for tauopathies. Int J Biol Macromol 2019; 133:473-483. [DOI: 10.1016/j.ijbiomac.2019.04.120] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/16/2019] [Accepted: 04/16/2019] [Indexed: 12/13/2022]
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Ruba A, Luo W, Kelich J, Tingey M, Yang W. 3D Tracking-Free Approach for Obtaining 3D Super-Resolution Information in Rotationally Symmetric Biostructures. J Phys Chem B 2019; 123:5107-5120. [PMID: 31117612 DOI: 10.1021/acs.jpcb.9b02979] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Currently, it is highly desirable but still challenging to obtain high-resolution (<50 nm) three-dimensional (3D) super-resolution information on structures in fixed specimens as well as for dynamic processes in live cells. Here we introduce a simple approach, without using 3D super-resolution microscopy or real-time 3D particle tracking, to estimate 3D sub-diffraction-limited structural or dynamic information in rotationally symmetric biostructures. This is a postlocalization analysis that transforms 2D super-resolution images or 2D single-molecule localization distributions into their corresponding 3D spatial probability distributions on the basis of prior known structural knowledge. This analysis is ideal in cases where the ultrastructure of a cellular structure is known but the substructural localization of a particular (usually mobile) protein is not. The method has been successfully applied to achieve 3D structural and functional sub-diffraction-limited information for 25-300 nm subcellular organelles that meet the rotational symmetry requirement, such as nuclear pore complex, primary cilium, and microtubule. In this Article, we will provide comprehensive analyses of this method by using experimental data and computational simulations. Finally, open source code of the 2D to 3D transformation algorithm (MATLAB) and simulations (Python) have also been developed.
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Affiliation(s)
- Andrew Ruba
- Department of Biology , Temple University , 1900 North 12th Street , Philadelphia , Pennsylvania , United States
| | - Wangxi Luo
- Department of Biology , Temple University , 1900 North 12th Street , Philadelphia , Pennsylvania , United States
| | - Joseph Kelich
- Department of Biology , Temple University , 1900 North 12th Street , Philadelphia , Pennsylvania , United States
| | - Mark Tingey
- Department of Biology , Temple University , 1900 North 12th Street , Philadelphia , Pennsylvania , United States
| | - Weidong Yang
- Department of Biology , Temple University , 1900 North 12th Street , Philadelphia , Pennsylvania , United States
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Bari KJ, Sharma S, Chary KVR. Sequence specific 1H, 13C and 15N resonance assignments of the C-terminal domain of human γS-crystallin. BIOMOLECULAR NMR ASSIGNMENTS 2019; 13:43-47. [PMID: 30232732 DOI: 10.1007/s12104-018-9848-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 09/15/2018] [Indexed: 06/08/2023]
Abstract
The high solubility and stability of crystallins present in the human eye lens maintains its transparency and refractive index with negligible protein turnover. Monomeric γ-crystallins and oligomeric β-crystallins are made up of highly homologous double Greek key domains. These domains are symmetric and possess higher stability as a result of the complex topology of individual Greek key motifs. γS-crystallin is one of the most abundant structural βγ-crystallins present in the human eye lens. In order to understand the structural stability of individual domains of human γS-crystallin in isolation vis-à-vis full length protein, we set out to structurally characterize its C-terminal domain (abbreviated hereafter as γS-CTD) by solution NMR. In this direction, we have cloned, over-expressed, isolated and purified the γS-CTD. The 2D [15N-1H] HSQC recorded with uniformly 13C/15N labeled γS-CTD showed a highly dispersed spectrum indicating the protein to adopt an ordered conformation. In this paper, we report almost complete sequence-specific 1H, 13C and 15N resonance assignments of γS-CTD using a suite of heteronuclear 3D NMR experiments.
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Affiliation(s)
- Khandekar Jishan Bari
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Gopanpally, Hyderabad, 500107, India
| | - Shrikant Sharma
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Gopanpally, Hyderabad, 500107, India
| | - Kandala V R Chary
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Gopanpally, Hyderabad, 500107, India.
- Department of Chemical Sciences, Tata Institute of Fundamental Research, 1, Homi Bhabha Road, Colaba, Mumbai, 400005, India.
- Indian Institute of Science Education and Research, Berhampur, Odisha, 760010, India.
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64
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Barman S, Das G, Mondal P, Pradhan K, Bhunia D, Khan J, Kar C, Ghosh S. Power of Tyrosine Assembly in Microtubule Stabilization and Neuroprotection Fueled by Phenol Appendages. ACS Chem Neurosci 2019; 10:1506-1516. [PMID: 30565916 DOI: 10.1021/acschemneuro.8b00497] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Microtubules play a crucial role in maintenance of structure, function, axonal extensions, cargo transport, and polarity of neurons. During neurodegenerative diseases, microtubule structure and function get severely damaged due to destabilization of its major structural proteins. Therefore, design and development of molecules that stabilize these microtubule networks have always been an important strategy for development of potential neurotherapeutic candidates. Toward this venture, we designed and developed a tyrosine rich trisubstituted triazine molecule (TY3) that stabilizes microtubules through close interaction with the taxol binding site. Detailed structural investigations revealed that the phenolic protons are the key interacting partners of tubulin. Interestingly, we found that this molecule is noncytotoxic in PC12 derived neurons, stabilizes microtubules against nocodazole induced depolymerization, and increases expression of acetylated tubulin (Ac-K40), an important marker of tubulin stability. Further, results show that TY3 significantly induces neurite sprouting as compared to the untreated control as well as the two other analogues (TS3 and TF3). It also possesses anti-Aβ fibrillation properties as confirmed by ThT assay, which leads to its neuroprotective effect against amyloidogenic induced toxicity caused through nerve growth factor (NGF) deprivation in PC12 derived neurons. Remarkably, our results reveal that it reduces the expression of TrkA (pY490) associated with NGF deprived amyloidogenesis, which further proves that it is a potent amyloid β inhibitor. Moreover, it promoted the health of the rat primary cortical neurons through higher expression of key neuronal markers such as MAP2 and Tuj1. Finally, we observed that it has good serum stability and has the ability to cross the blood-brain barrier (BBB). Overall, our work indicates the importance of phenolic -OH in promoting neuroprotection and its importance could be implemented in the development of future neurotherapeutics.
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Affiliation(s)
- Surajit Barman
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
| | - Gaurav Das
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology, Campus 4 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Prasenjit Mondal
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology, Campus 4 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Krishnangsu Pradhan
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
| | - Debmalya Bhunia
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
| | - Juhee Khan
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
| | - Chirantan Kar
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
| | - Surajit Ghosh
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology, Campus 4 Raja S. C. Mullick Road, Kolkata 700032, India
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Barman S, Das G, Mondal P, Pradhan K, Jana B, Bhunia D, Saha A, Kar C, Ghosh S. Tripodal molecular propellers perturb microtubule dynamics: indole acts as a blade and plays a crucial role in anticancer activity. Chem Commun (Camb) 2019; 55:2356-2359. [PMID: 30724319 DOI: 10.1039/c9cc00074g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An indole-rich tripodal microtubule inhibitor is designed, which binds at the DCVJ site of tubulin and inhibits its polymerization. It causes apoptotic death of cancer cells without affecting normal cells and inhibits the growth of tumors. Finally, STD-NMR and TR-NOESY experiments reveal that the indole appendages play a crucial role in interacting with tubulin.
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Affiliation(s)
- Surajit Barman
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, West Bengal, India.
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Hebebrand M, Hüffmeier U, Trollmann R, Hehr U, Uebe S, Ekici AB, Kraus C, Krumbiegel M, Reis A, Thiel CT, Popp B. The mutational and phenotypic spectrum of TUBA1A-associated tubulinopathy. Orphanet J Rare Dis 2019; 14:38. [PMID: 30744660 PMCID: PMC6371496 DOI: 10.1186/s13023-019-1020-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 02/03/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The TUBA1A-associated tubulinopathy is clinically heterogeneous with brain malformations, microcephaly, developmental delay and epilepsy being the main clinical features. It is an autosomal dominant disorder mostly caused by de novo variants in TUBA1A. RESULTS In three individuals with developmental delay we identified heterozygous de novo missense variants in TUBA1A using exome sequencing. While the c.1307G > A, p.(Gly436Asp) variant was novel, the two variants c.518C > T, p.(Pro173Leu) and c.641G > A, p.(Arg214His) were previously described. We compared the variable phenotype observed in these individuals with a carefully conducted review of the current literature and identified 166 individuals, 146 born and 20 fetuses with a TUBA1A variant. In 107 cases with available clinical information we standardized the reported phenotypes according to the Human Phenotype Ontology. The most commonly reported features were developmental delay (98%), anomalies of the corpus callosum (96%), microcephaly (76%) and lissencephaly (agyria-pachygyria) (70%), although reporting was incomplete in the different studies. We identified a total of 121 specific variants, including 15 recurrent ones. Missense variants cluster in the C-terminal region around the most commonly affected amino acid position Arg402 (13.3%). In a three-dimensional protein model, 38.6% of all disease-causing variants including those in the C-terminal region are predicted to affect the binding of microtubule-associated proteins or motor proteins. Genotype-phenotype analysis for recurrent variants showed an overrepresentation of certain clinical features. However, individuals with these variants are often reported in the same publication. CONCLUSIONS With 166 individuals, we present the most comprehensive phenotypic and genotypic standardized synopsis for clinical interpretation of TUBA1A variants. Despite this considerable number, a detailed genotype-phenotype characterization is limited by large inter-study variability in reporting.
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Affiliation(s)
- Moritz Hebebrand
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - Ulrike Hüffmeier
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - Regina Trollmann
- Department of Pediatrics, Division of Neuropediatrics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Ute Hehr
- Institute of Human Genetics, University of Regensburg, Regensburg, Germany
| | - Steffen Uebe
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - Arif B Ekici
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - Cornelia Kraus
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - Mandy Krumbiegel
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - André Reis
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - Christian T Thiel
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany.
| | - Bernt Popp
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
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67
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Alavi Naini SM, Soussi-Yanicostas N. Heparan Sulfate as a Therapeutic Target in Tauopathies: Insights From Zebrafish. Front Cell Dev Biol 2018; 6:163. [PMID: 30619849 PMCID: PMC6306439 DOI: 10.3389/fcell.2018.00163] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 11/15/2018] [Indexed: 12/13/2022] Open
Abstract
Microtubule-associated protein tau (MAPT) hyperphosphorylation and aggregation, are two hallmarks of a family of neurodegenerative disorders collectively referred to as tauopathies. In many tauopathies, including Alzheimer's disease (AD), progressive supranuclear palsy (PSP) and Pick's disease, tau aggregates are found associated with highly sulfated polysaccharides known as heparan sulfates (HSs). In AD, amyloid beta (Aβ) peptide aggregates associated with HS are also characteristic of disease. Heparin, an HS analog, promotes misfolding, hyperphosphorylation and aggregation of tau protein in vitro. HS also provides cell surface receptors for attachment and uptake of tau seeds, enabling their propagation. These findings point to HS-tau interactions as potential therapeutic targets in tauopathies. The zebrafish genome contains genes paralogous to MAPT, genes orthologous to HS biosynthetic and chain modifier enzymes, and other genes implicated in AD. The nervous system in the zebrafish bears anatomical and chemical similarities to that in humans. These homologies, together with numerous technical advantages, make zebrafish a valuable model for investigating basic mechanisms in tauopathies and identifying therapeutic targets. Here, we comprehensively review current knowledge on the role of HSs in tau pathology and HS-targeting therapeutic approaches. We also discuss novel insights from zebrafish suggesting a role for HS 3-O-sulfated motifs in tau pathology and establishing HS antagonists as potential preventive agents or therapies for tauopathies.
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Affiliation(s)
- Seyedeh Maryam Alavi Naini
- Department of Neuroscience, Institut de Biologie Paris Seine (IBPS), INSERM, CNRS, Sorbonne Université, Paris, France
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68
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Kim J, Park SJ. Roles of end-binding 1 protein and gamma-tubulin small complex in cytokinesis and flagella formation of Giardia lamblia. Microbiologyopen 2018; 8:e00748. [PMID: 30318753 PMCID: PMC6562232 DOI: 10.1002/mbo3.748] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 08/30/2018] [Accepted: 09/08/2018] [Indexed: 02/05/2023] Open
Abstract
Giardia lamblia is a unicellular organism with two nuclei, a median body, eight flagella, and an adhesive disk. γ‐Tubulin is a microtubule (MT)‐nucleating protein that functions in the γ‐tubulin small complex (γ‐TuSC) in budding yeast. In this study, G. lamblia γ‐tubulin (Glγ‐tubulin) was found to bind to another MT‐binding protein, namely G. lamblia end‐binding protein 1 (GlEB1), via both in vivo and in vitro assays. Hemagglutinin (HA)‐tagged Glγ‐tubulin localized to the basal bodies, axonemes, and median bodies of G. lamblia trophozoites. The knockdown of Glγ‐tubulin expression using an anti‐Glγ‐tubulin morpholino resulted in a decreased growth rate and an increased failed cytokinesis cells of Giardia. The formation of median bodies was affected, and the central pair of MTs in flagella was frequently missing in the Giardia treated with an anti‐Glγ‐tubulin morpholino. G. lamblia γ‐tubulin complex protein 2 (GlGCP2) and GlGCP3, which are putative components of γ‐TuSC, were co‐immunoprecipitated with HA‐tagged Glγ‐tubulin in Giardia extracts. The knockdown of GlGCP2 and GlGCP3 expression also resulted in decreased formation of both the median body and flagella MTs. Knockdown of Glγ‐tubulin, GlGCP2, and GlGCP3 expression affected localization of GlEB1 in G. lamblia. In addition, decreased level of GlEB1 caused reduced formation of median body and the central pair of flagella MTs. These results indicated that Glγ‐tubulin plays a role in MT nucleation for median body formation and flagella biogenesis as a component of Glγ‐TuSC in Giardia and GlEB1 may be involved in this process.
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Affiliation(s)
- Juri Kim
- Department of Environmental Medical Biology and Institute of Tropical Medicine, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Soon-Jung Park
- Department of Environmental Medical Biology and Institute of Tropical Medicine, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
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69
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Martinho M, Allegro D, Huvent I, Chabaud C, Etienne E, Kovacic H, Guigliarelli B, Peyrot V, Landrieu I, Belle V, Barbier P. Two Tau binding sites on tubulin revealed by thiol-disulfide exchanges. Sci Rep 2018; 8:13846. [PMID: 30218010 PMCID: PMC6138654 DOI: 10.1038/s41598-018-32096-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 08/14/2018] [Indexed: 01/25/2023] Open
Abstract
Tau is a Microtubule-associated protein that induces and stabilizes the formation of the Microtubule cytoskeleton and plays an important role in neurodegenerative diseases. The Microtubules binding region of Tau has been determined for a long time but where and how Tau binds to its partner still remain a topic of debate. We used Site Directed Spin Labeling combined with EPR spectroscopy to monitor Tau upon binding to either Taxol-stabilized MTs or to αβ-tubulin when Tau is directly used as an inducer of MTs formation. Using maleimide-functionalized labels grafted on the two natural cysteine residues of Tau, we found in both cases that Tau remains highly flexible in these regions confirming the fuzziness of Tau:MTs complexes. More interestingly, using labels linked by a disulfide bridge, we evidenced for the first time thiol disulfide exchanges between αβ-tubulin or MTs and Tau. Additionally, Tau fragments having the two natural cysteines or variants containing only one of them were used to determine the role of each cysteine individually. The difference observed in the label release kinetics between preformed MTs or Tau-induced MTs, associated to a comparison of structural data, led us to propose two putative binding sites of Tau on αβ-tubulin.
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Affiliation(s)
- Marlène Martinho
- Aix-Marseille Univ, CNRS, UMR 7281 BIP, Bioénergétique et Ingénierie des Protéines, Marseille, France
| | - Diane Allegro
- Aix-Marseille Univ, CNRS, UMR 7051, INP, Institut de Neurophysiopathologie, Marseille, France
| | | | - Charlotte Chabaud
- Aix-Marseille Univ, CNRS, UMR 7281 BIP, Bioénergétique et Ingénierie des Protéines, Marseille, France.,Aix-Marseille Univ, CNRS, UMR 7051, INP, Institut de Neurophysiopathologie, Marseille, France
| | - Emilien Etienne
- Aix-Marseille Univ, CNRS, UMR 7281 BIP, Bioénergétique et Ingénierie des Protéines, Marseille, France
| | - Hervé Kovacic
- Aix-Marseille Univ, CNRS, UMR 7051, INP, Institut de Neurophysiopathologie, Marseille, France
| | - Bruno Guigliarelli
- Aix-Marseille Univ, CNRS, UMR 7281 BIP, Bioénergétique et Ingénierie des Protéines, Marseille, France
| | - Vincent Peyrot
- Aix-Marseille Univ, CNRS, UMR 7051, INP, Institut de Neurophysiopathologie, Marseille, France
| | | | - Valérie Belle
- Aix-Marseille Univ, CNRS, UMR 7281 BIP, Bioénergétique et Ingénierie des Protéines, Marseille, France.
| | - Pascale Barbier
- Aix-Marseille Univ, CNRS, UMR 7051, INP, Institut de Neurophysiopathologie, Marseille, France.
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Salama M, Shalash A, Magdy A, Makar M, Roushdy T, Elbalkimy M, Elrassas H, Elkafrawy P, Mohamed W, Abou Donia MB. Tubulin and Tau: Possible targets for diagnosis of Parkinson's and Alzheimer's diseases. PLoS One 2018; 13:e0196436. [PMID: 29742117 PMCID: PMC5942772 DOI: 10.1371/journal.pone.0196436] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Accepted: 04/12/2018] [Indexed: 11/29/2022] Open
Abstract
Neurodegenerative diseases including Alzheimer’s disease (AD) and Parkinson’s disease (PD) are characterized by progressive neuronal loss and pathological accumulation of some proteins. Developing new biomarkers for both diseases is highly important for the early diagnosis and possible development of neuro-protective strategies. Serum antibodies (AIAs) against neuronal proteins are potential biomarkers for AD and PD that may be formed in response to their release into systemic circulation after brain damage. In the present study, two AIAs (tubulin and tau) were measured in sera of patients of PD and AD, compared to healthy controls. Results showed that both antibodies were elevated in patients with PD and AD compared to match controls. Curiously, the profile of elevation of antibodies was different in both diseases. In PD cases, tubulin and tau AIAs levels were similar. On the other hand, AD patients showed more elevation of tau AIAs compared to tubulin. Our current results suggested that AIAs panel could be able to identify cases with neuro-degeneration when compared with healthy subjects. More interestingly, it is possible to differentiate between PD and AD cases through identifying specific AIAs profile for each neurodegenerative states.
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Affiliation(s)
- Mohamed Salama
- Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Mansoura, Egypt
- Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- * E-mail:
| | - Ali Shalash
- Department of Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Alshimaa Magdy
- Biochemistry Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Marianne Makar
- Department of Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Tamer Roushdy
- Department of Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Mahmoud Elbalkimy
- Department of Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Hanan Elrassas
- Okasha Institute of Psychiatry, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | | | - Wael Mohamed
- Department of Pharmacology, Faculty of Medicine, Menoufia University, Shebeen Elkoum, Egypt
- Basic Medical Science Department, Kulliyyah of Medicine, International Islamic University Malaysia, Kuantan Pahang, Malaysia
| | - Mohamed B. Abou Donia
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina, United States of America
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71
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Bondy-Chorney E, Denoncourt A, Sai Y, Downey M. Nonhistone targets of KAT2A and KAT2B implicated in cancer biology 1. Biochem Cell Biol 2018; 97:30-45. [PMID: 29671337 DOI: 10.1139/bcb-2017-0297] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Lysine acetylation is a critical post-translation modification that can impact a protein's localization, stability, and function. Originally thought to only occur on histones, we now know thousands of nonhistone proteins are also acetylated. In conjunction with many other proteins, lysine acetyltransferases (KATs) are incorporated into large protein complexes that carry out these modifications. In this review we focus on the contribution of two KATs, KAT2A and KAT2B, and their potential roles in the development and progression of cancer. Systems biology demands that we take a broad look at protein function rather than focusing on individual pathways or targets. As such, in this review we examine KAT2A/2B-directed nonhistone protein acetylations in cancer in the context of the 10 "Hallmarks of Cancer", as defined by Hanahan and Weinberg. By focusing on specific examples of KAT2A/2B-directed acetylations with well-defined mechanisms or strong links to a cancer phenotype, we aim to reinforce the complex role that these enzymes play in cancer biology.
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Affiliation(s)
- Emma Bondy-Chorney
- Department of Cellular and Molecular Medicine and Ottawa Institute of Systems Biology, 451 Smyth Rd., Ottawa, ON KIH 8M5, Canada.,Department of Cellular and Molecular Medicine and Ottawa Institute of Systems Biology, 451 Smyth Rd., Ottawa, ON KIH 8M5, Canada
| | - Alix Denoncourt
- Department of Cellular and Molecular Medicine and Ottawa Institute of Systems Biology, 451 Smyth Rd., Ottawa, ON KIH 8M5, Canada.,Department of Cellular and Molecular Medicine and Ottawa Institute of Systems Biology, 451 Smyth Rd., Ottawa, ON KIH 8M5, Canada
| | - Yuka Sai
- Department of Cellular and Molecular Medicine and Ottawa Institute of Systems Biology, 451 Smyth Rd., Ottawa, ON KIH 8M5, Canada.,Department of Cellular and Molecular Medicine and Ottawa Institute of Systems Biology, 451 Smyth Rd., Ottawa, ON KIH 8M5, Canada
| | - Michael Downey
- Department of Cellular and Molecular Medicine and Ottawa Institute of Systems Biology, 451 Smyth Rd., Ottawa, ON KIH 8M5, Canada.,Department of Cellular and Molecular Medicine and Ottawa Institute of Systems Biology, 451 Smyth Rd., Ottawa, ON KIH 8M5, Canada
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72
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Bueno O, Estévez Gallego J, Martins S, Prota AE, Gago F, Gómez-SanJuan A, Camarasa MJ, Barasoain I, Steinmetz MO, Díaz JF, Pérez-Pérez MJ, Liekens S, Priego EM. High-affinity ligands of the colchicine domain in tubulin based on a structure-guided design. Sci Rep 2018; 8:4242. [PMID: 29523799 PMCID: PMC5844890 DOI: 10.1038/s41598-018-22382-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 02/21/2018] [Indexed: 01/05/2023] Open
Abstract
Microtubule-targeting agents that bind at the colchicine-site of tubulin are of particular interest in antitumoral therapy due to their dual mechanism of action as antimitotics and vascular disrupting agents. Cyclohexanediones derivatives have been described as a new family of colchicine-domain binders with an association constant to tubulin similar to that of colchicine. Here, the high-resolution structures of tubulin in complex with cyclohexanediones TUB015 and TUB075 were solved by X-ray crystallography. A detailed analysis of the tubulin-TUB075 interaction by means of computational affinity maps allowed the identification of two additional regions at the binding site that were addressed with the design and synthesis of a new series of cyclohexanediones with a distal 2-substituted benzofurane. These new compounds showed potent antiproliferative activity with IC50 values in the nM range, arrested cell cycle progression at the G2/M phase and induced apoptosis at sub μM concentrations. Moreover, they caused the destruction of a preformed vascular network in vitro and inhibited the migration of endothelial cells at non-toxic concentrations. Finally, these compounds displayed high affinity for tubulin as substantiated by a K b value of 2.87 × 108 M-1 which, to the best of our knowledge, represents the highest binding constant measured to date for a colchicine-domain ligand.
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Affiliation(s)
- Oskía Bueno
- Instituto de Química Médica (IQM,CSIC), Juan de la Cierva 3, 28006, Madrid, Spain
| | - Juan Estévez Gallego
- Centro de Investigaciones Biológicas (CIB,CSIC), Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Solange Martins
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Andrea E Prota
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut, 5232, Villigen, Switzerland
| | - Federico Gago
- Department of Biomedical Sciences (Unidad Asociada IQM,CSIC) and Instituto de Investigación Quimica "Andrés M. del Río" (IQAR), University of Alcalá, Unidad Asociada CSIC, 28805 Alcalá de Henares, Madrid, Spain
| | - Asier Gómez-SanJuan
- Instituto de Química Médica (IQM,CSIC), Juan de la Cierva 3, 28006, Madrid, Spain
| | - María-José Camarasa
- Instituto de Química Médica (IQM,CSIC), Juan de la Cierva 3, 28006, Madrid, Spain
| | - Isabel Barasoain
- Centro de Investigaciones Biológicas (CIB,CSIC), Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Michel O Steinmetz
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut, 5232, Villigen, Switzerland
- University of Basel, Biozentrum, CH-4056, Basel, Switzerland
| | - J Fernando Díaz
- Centro de Investigaciones Biológicas (CIB,CSIC), Ramiro de Maeztu 9, 28040, Madrid, Spain
| | | | - Sandra Liekens
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Eva-María Priego
- Instituto de Química Médica (IQM,CSIC), Juan de la Cierva 3, 28006, Madrid, Spain.
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73
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Genome-Wide Screen for New Components of the Drosophila melanogaster Torso Receptor Tyrosine Kinase Pathway. G3-GENES GENOMES GENETICS 2018; 8:761-769. [PMID: 29363515 PMCID: PMC5844297 DOI: 10.1534/g3.117.300491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Patterning of the Drosophila embryonic termini by the Torso (Tor) receptor pathway has long served as a valuable paradigm for understanding how receptor tyrosine kinase signaling is controlled. However, the mechanisms that underpin the control of Tor signaling remain to be fully understood. In particular, it is unclear how the Perforin-like protein Torso-like (Tsl) localizes Tor activity to the embryonic termini. To shed light on this, together with other aspects of Tor pathway function, we conducted a genome-wide screen to identify new pathway components that operate downstream of Tsl. Using a set of molecularly defined chromosomal deficiencies, we screened for suppressors of ligand-dependent Tor signaling induced by unrestricted Tsl expression. This approach yielded 59 genomic suppressor regions, 11 of which we mapped to the causative gene, and a further 29 that were mapped to <15 genes. Of the identified genes, six represent previously unknown regulators of embryonic Tor signaling. These include twins (tws), which encodes an integral subunit of the protein phosphatase 2A complex, and α-tubulin at 84B (αTub84B), a major constituent of the microtubule network, suggesting that these may play an important part in terminal patterning. Together, these data comprise a valuable resource for the discovery of new Tor pathway components. Many of these may also be required for other roles of Tor in development, such as in the larval prothoracic gland where Tor signaling controls the initiation of metamorphosis.
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74
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Zhu L, Luo K, Li K, Jin Y, Lin J. Design, synthesis and biological evaluation of 2-phenylquinoline-4-carboxamide derivatives as a new class of tubulin polymerization inhibitors. Bioorg Med Chem 2017; 25:5939-5951. [DOI: 10.1016/j.bmc.2017.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/05/2017] [Accepted: 09/06/2017] [Indexed: 12/15/2022]
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75
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Barsegov V, Ross JL, Dima RI. Dynamics of microtubules: highlights of recent computational and experimental investigations. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:433003. [PMID: 28812545 DOI: 10.1088/1361-648x/aa8670] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Microtubules are found in most eukaryotic cells, with homologs in eubacteria and archea, and they have functional roles in mitosis, cell motility, intracellular transport, and the maintenance of cell shape. Numerous efforts have been expended over the last two decades to characterize the interactions between microtubules and the wide variety of microtubule associated proteins that control their dynamic behavior in cells resulting in microtubules being assembled and disassembled where and when they are required by the cell. We present the main findings regarding microtubule polymerization and depolymerization and review recent work about the molecular motors that modulate microtubule dynamics by inducing either microtubule depolymerization or severing. We also discuss the main experimental and computational approaches used to quantify the thermodynamics and mechanics of microtubule filaments.
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Affiliation(s)
- Valeri Barsegov
- Department of Chemistry, University of Massachusetts, Lowell, MA 01854, United States of America
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76
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Agarwal S, Varma D. Targeting mitotic pathways for endocrine-related cancer therapeutics. Endocr Relat Cancer 2017; 24:T65-T82. [PMID: 28615236 PMCID: PMC5557717 DOI: 10.1530/erc-17-0080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 06/14/2017] [Indexed: 12/21/2022]
Abstract
A colossal amount of basic research over the past few decades has provided unprecedented insights into the highly complex process of cell division. There is an ever-expanding catalog of proteins that orchestrate, participate and coordinate in the exquisite processes of spindle formation, chromosome dynamics and the formation and regulation of kinetochore microtubule attachments. Use of classical microtubule poisons has still been widely and often successfully used to combat a variety of cancers, but their non-selective interference in other crucial physiologic processes necessitate the identification of novel druggable components specific to the cell cycle/division pathway. Considering cell cycle deregulation, unscheduled proliferation, genomic instability and chromosomal instability as a hallmark of tumor cells, there lies an enormous untapped terrain that needs to be unearthed before a drug can pave its way from bench to bedside. This review attempts to systematically summarize the advances made in this context so far with an emphasis on endocrine-related cancers and the avenues for future progress to target mitotic mechanisms in an effort to combat these dreadful cancers.
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Affiliation(s)
- Shivangi Agarwal
- Department of Cell and Molecular BiologyFeinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Dileep Varma
- Department of Cell and Molecular BiologyFeinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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77
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Abstract
FtsZ, a homolog of tubulin, is found in almost all bacteria and archaea where it has a primary role in cytokinesis. Evidence for structural homology between FtsZ and tubulin came from their crystal structures and identification of the GTP box. Tubulin and FtsZ constitute a distinct family of GTPases and show striking similarities in many of their polymerization properties. The differences between them, more so, the complexities of microtubule dynamic behavior in comparison to that of FtsZ, indicate that the evolution to tubulin is attributable to the incorporation of the complex functionalities in higher organisms. FtsZ and microtubules function as polymers in cell division but their roles differ in the division process. The structural and partial functional homology has made the study of their dynamic properties more interesting. In this review, we focus on the application of the information derived from studies on FtsZ dynamics to study microtubule dynamics and vice versa. The structural and functional aspects that led to the establishment of the homology between the two proteins are explained to emphasize the network of FtsZ and microtubule studies and how they are connected.
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Affiliation(s)
- Rachana Rao Battaje
- Department of Biosciences and BioengineeringIndian Institute of Technology Bombay, Mumbai, India
| | - Dulal Panda
- Department of Biosciences and BioengineeringIndian Institute of Technology Bombay, Mumbai, India
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78
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Nirschl JJ, Ghiretti AE, Holzbaur ELF. The impact of cytoskeletal organization on the local regulation of neuronal transport. Nat Rev Neurosci 2017; 18:585-597. [PMID: 28855741 DOI: 10.1038/nrn.2017.100] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Neurons are akin to modern cities in that both are dependent on robust transport mechanisms. Like the best mass transit systems, trafficking in neurons must be tailored to respond to local requirements. Neurons depend on both high-speed, long-distance transport and localized dynamics to correctly deliver cargoes and to tune synaptic responses. Here, we focus on the mechanisms that provide localized regulation of the transport machinery, including the cytoskeleton and molecular motors, to yield compartment-specific trafficking in the axon initial segment, axon terminal, dendrites and spines. The synthesis of these mechanisms provides a sophisticated and responsive transit system for the cell.
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Affiliation(s)
- Jeffrey J Nirschl
- Department of Physiology, Perelman School of Medicine, University of Pennsylvania, 638A Clinical Research Building, 415 Curie Boulevard, Philadelphia, Pennsylvania 19104, USA
| | - Amy E Ghiretti
- Department of Physiology, Perelman School of Medicine, University of Pennsylvania, 638A Clinical Research Building, 415 Curie Boulevard, Philadelphia, Pennsylvania 19104, USA
| | - Erika L F Holzbaur
- Department of Physiology, Perelman School of Medicine, University of Pennsylvania, 638A Clinical Research Building, 415 Curie Boulevard, Philadelphia, Pennsylvania 19104, USA
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79
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Demchuk OM, Karpov PA, Blume YB. 3D‐modeling of carboxyl‐terminal phosphorylation of plant αβ‐tubulin and its role in kinesin‐8/microtubule interaction. Cell Biol Int 2017; 43:1072-1080. [DOI: 10.1002/cbin.10818] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/24/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Oleh M. Demchuk
- Department of Genomics and Molecular Biotechnology, Institute of Food Biotechnology and GenomicsNatl. Acad. Sci. of Ukraine, Osipovs'koho St., 2a, 04123Kyiv Ukraine
| | - Pavel A. Karpov
- Department of Genomics and Molecular Biotechnology, Institute of Food Biotechnology and GenomicsNatl. Acad. Sci. of Ukraine, Osipovs'koho St., 2a, 04123Kyiv Ukraine
| | - Yaroslav B. Blume
- Department of Genomics and Molecular Biotechnology, Institute of Food Biotechnology and GenomicsNatl. Acad. Sci. of Ukraine, Osipovs'koho St., 2a, 04123Kyiv Ukraine
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80
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Wu YL, Engl W, Hu B, Cai P, Leow WR, Tan NS, Lim CT, Chen X. Nanomechanically Visualizing Drug-Cell Interaction at the Early Stage of Chemotherapy. ACS NANO 2017; 11:6996-7005. [PMID: 28530823 DOI: 10.1021/acsnano.7b02376] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A detailed understanding of chemotherapy is determined by the response of cell to the formation of the drug-target complex and its corresponding sudden or eventual cell death. However, visualization of this early but important process, encompassing the fast dynamics as well as complex network of molecular pathways, remains challenging. Herein, we report that the nanomechanical traction force is sensitive enough to reflect the early cellular response upon the addition of chemotherapeutical molecules in a real-time and noninvasive manner, due to interactions between chemotherapeutic drug and its cytoskeleton targets. This strategy has outperformed the traditional cell viability, cell cycle, cell impendence as well as intracellular protein analyses, in terms of fast response. Furthermore, by using the nanomechanical traction force as a nanoscale biophysical marker, we discover a cellular nanomechanical change upon drug treatment in a fast and sensitive manner. Overall, this approach could help to reveal the hidden mechanistic steps in chemotherapy and provide useful insights in drug screening.
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Affiliation(s)
- Yun-Long Wu
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Science, Xiamen University , Xiamen, Fujian 361102, China
| | - Wilfried Engl
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Benhui Hu
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Pingqiang Cai
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Wan Ru Leow
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Nguan Soon Tan
- School of Biological Sciences, Nanyang Technological University , 60 Nanyang Drive, Singapore 637551, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University , 59 Nanyang Drive, Singapore 636921, Singapore
- Institute of Molecular and Cell Biology, 61 Biopolis Drive, Proteos, Agency for Science Technology & Research , Singapore 138673, Singapore
- KK Research Centre, KK Women's and Children Hospital , 100 Bukit Timah Road, Singapore 229899, Singapore
| | - Chwee Teck Lim
- Mechanobiology Institute, Department of Biomedical Engineering & Department of Mechanical Engineering, National University of Singapore , Singapore 117576, Singapore
| | - Xiaodong Chen
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
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81
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She ZY, Yang WX. Molecular mechanisms of kinesin-14 motors in spindle assembly and chromosome segregation. J Cell Sci 2017; 130:2097-2110. [DOI: 10.1242/jcs.200261] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
ABSTRACT
During eukaryote cell division, molecular motors are crucial regulators of microtubule organization, spindle assembly, chromosome segregation and intracellular transport. The kinesin-14 motors are evolutionarily conserved minus-end-directed kinesin motors that occur in diverse organisms from simple yeasts to higher eukaryotes. Members of the kinesin-14 motor family can bind to, crosslink or slide microtubules and, thus, regulate microtubule organization and spindle assembly. In this Commentary, we present the common subthemes that have emerged from studies of the molecular kinetics and mechanics of kinesin-14 motors, particularly with regard to their non-processive movement, their ability to crosslink microtubules and interact with the minus- and plus-ends of microtubules, and with microtubule-organizing center proteins. In particular, counteracting forces between minus-end-directed kinesin-14 and plus-end-directed kinesin-5 motors have recently been implicated in the regulation of microtubule nucleation. We also discuss recent progress in our current understanding of the multiple and fundamental functions that kinesin-14 motors family members have in important aspects of cell division, including the spindle pole, spindle organization and chromosome segregation.
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Affiliation(s)
- Zhen-Yu She
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Wan-Xi Yang
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
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82
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Sueth-Santiago V, Decote-Ricardo D, Morrot A, Freire-de-Lima CG, Lima MEF. Challenges in the chemotherapy of Chagas disease: Looking for possibilities related to the differences and similarities between the parasite and host. World J Biol Chem 2017; 8:57-80. [PMID: 28289519 PMCID: PMC5329715 DOI: 10.4331/wjbc.v8.i1.57] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 12/30/2016] [Accepted: 01/14/2017] [Indexed: 02/05/2023] Open
Abstract
Almost 110 years after the first studies by Dr. Carlos Chagas describing an infectious disease that was named for him, Chagas disease remains a neglected illness and a death sentence for infected people in poor countries. This short review highlights the enormous need for new studies aimed at the development of novel and more specific drugs to treat chagasic patients. The primary tool for facing this challenge is deep knowledge about the similarities and differences between the parasite and its human host.
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83
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Ding Z, Cheng H, Wang S, Hou Y, Zhao J, Guan H, Li W. Development of MBRI-001, a deuterium-substituted plinabulin derivative as a potent anti-cancer agent. Bioorg Med Chem Lett 2017; 27:1416-1419. [PMID: 28228362 DOI: 10.1016/j.bmcl.2017.01.096] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 01/19/2017] [Accepted: 01/31/2017] [Indexed: 01/02/2023]
Abstract
Plinabulin, a drug targeting microtubule of cancer cells, has been currently tried in its phase III clinical study. However, low efficacy caused by poor pharmacokinetic (PK) properties has been considered to be the main obstacle to approved by the Food and Drug Administration. Herein, we introduced a deuterium atom as an isostere in its structure to become a new compound named (MBRI-001, No. 9 in a series of deuterium-substituted compounds). The structure of MBRI-001 was characterized by HRMS, NMR, IR and a single crystal analysis. MBRI-001 exhibited better pharmacokinetic characteristics than that of plinabulin. Additionally, its antitumor activity is in a low nanomolar level for a variety of cancer cell lines and high activity against human NCI-H460 xenograted in mice intravenous administration. Importantly, continuous administration of MBRI-001 exhibited lower toxicity compared to docetaxel. We thus suggest that MBRI-001 could be developed as a promising anti-cancer agent in near future.
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Affiliation(s)
- Zhongpeng Ding
- Key Laboratory of Marine Drugs of Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Hejuan Cheng
- Key Laboratory of Marine Drugs of Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Shixiao Wang
- Marine Biomedical Research Institute of Qingdao, Qingdao 266071, People's Republic of China
| | - Yingwei Hou
- Key Laboratory of Marine Drugs of Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China; Marine Biomedical Research Institute of Qingdao, Qingdao 266071, People's Republic of China
| | - Jianchun Zhao
- Key Laboratory of Marine Drugs of Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China; Marine Biomedical Research Institute of Qingdao, Qingdao 266071, People's Republic of China
| | - Huashi Guan
- Key Laboratory of Marine Drugs of Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China; Marine Biomedical Research Institute of Qingdao, Qingdao 266071, People's Republic of China
| | - Wenbao Li
- Key Laboratory of Marine Drugs of Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China; Marine Biomedical Research Institute of Qingdao, Qingdao 266071, People's Republic of China.
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84
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Zhang X, Zhao J, Gao X, Pei D, Gao C. Anthelmintic drug albendazole arrests human gastric cancer cells at the mitotic phase and induces apoptosis. Exp Ther Med 2017; 13:595-603. [PMID: 28352336 PMCID: PMC5348670 DOI: 10.3892/etm.2016.3992] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 11/10/2016] [Indexed: 12/13/2022] Open
Abstract
As microtubules have a vital function in the cell cycle, oncologists have developed microtubule inhibitors capable of preventing uncontrolled cell division, as in the case of cancer. The anthelmintic drug albendazole (ABZ) has been demonstrated to inhibit hepatocellular, ovarian and prostate cancer cells via microtubule targeting. However, its activity against human gastric cancer (GC) cells has remained to be determined. In the present study, ABZ was used to treat GC cells (MKN-45, SGC-7901 and MKN-28). A a CCK-8 cell proliferation assay was performed to assess the effects of ABZ on cell viability and cell cycle changes were assessed using flow cytometry. SGC-7901 cells were selected for further study, and flow cytometry was employed to determine the apoptotic rate, immunofluorescence analysis was employed to show changes of the microtubule structure as well as the subcellular localization and expression levels of cyclin B1, and western blot analysis was used to identify the dynamics of microtubule assembly. The expression levels of relevant proteins, including cyclin B1 and Cdc2, the two subunits of mitosis-promoting factor as well as apoptosis-asociated proteins were also assessed by western blot analysis. The results showed that ABZ exerted its anti-cancer activity in GC cell lines by disrupting microtubule formation and function to cause mitotic arrest, which is also associated with the accumulation of cyclin B1, and consequently induces apoptosis.
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Affiliation(s)
- Xuan Zhang
- Department of Oncology, Xuzhou Medical College, Xuzhou, Jiangsu 221002, P.R. China
| | - Jing Zhao
- Department of Oncology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu 221002, P.R. China
| | - Xiangyang Gao
- Department of Oncology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu 221002, P.R. China
| | - Dongsheng Pei
- Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical College, Xuzhou, Jiangsu 221002, P.R. China
| | - Chao Gao
- Department of Oncology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu 221002, P.R. China
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85
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ZLM-7 exhibits anti-angiogenic effects via impaired endothelial cell function and blockade of VEGF/VEGFR-2 signaling. Oncotarget 2017; 7:19018-30. [PMID: 26967559 PMCID: PMC4951348 DOI: 10.18632/oncotarget.7968] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 02/05/2016] [Indexed: 12/12/2022] Open
Abstract
Inhibition of angiogenesis is a promising therapeutic strategy against cancer. In this study, we reported that ZLM-7, a combretastain A-4 (CA-4) derivative, exhibited anti-angiogenic activity in vitro and in vivo. In vitro, ZLM-7 induced microtubule cytoskeletal disassembly. It decreased VEGF-induced proliferation, migration, invasion and tube formation in endothelial cells, which are critical steps in angiogenesis. In vivo, ZLM-7 significantly inhibited neovascularization in a chicken chorioallantoic membrane (CAM) model and reduced the microvessel density in tumor tissues of MCF-7 xenograft mouse model. ZLM-7 also displayed comparable antiangiogenic and anti-tumor activities associated with the lead compound CA-4, but exhibited lower toxicity compared with CA-4. The anti-angiogenic effect of ZLM-7 was exerted via blockade of VEGF/VEGFR-2 signaling. ZLM-7 treatment suppressed the expression and secretion of VEGF in endothelial cells and MCF-7 cells under hypoxia. Further, ZLM-7 suppressed the VEGF-induced phosphorylation of VEGFR-2 and its downstream signaling mediators including activated AKT, MEK and ERK in endothelial cells. Overall, these results demonstrate that ZLM-7 exhibits anti-angiogenic activities by impairing endothelial cell function and blocking VEGF/VEGFR-2 signaling, suggesting that ZLM-7 might be a potential angiogenesis inhibitor.
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86
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Design and synthesis of imidazo[2,1-b]thiazole linked triazole conjugates: Microtubule-destabilizing agents. Eur J Med Chem 2017; 126:36-51. [DOI: 10.1016/j.ejmech.2016.09.060] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 09/17/2016] [Accepted: 09/19/2016] [Indexed: 01/11/2023]
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87
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Sabina XJ, Karthikeyan J, Velmurugan G, Tamizh MM, Shetty AN. Design and in vitro biological evaluation of substituted chalcones synthesized from nitrogen mustards as potent microtubule targeted anticancer agents. NEW J CHEM 2017. [DOI: 10.1039/c7nj00265c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Six chalcones were synthesized and their structures determined by single crystal X-ray diffraction studies. They exhibited enhanced anticancer activity and tubulin inhibition.
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Affiliation(s)
- X. Janet Sabina
- Department of Chemistry
- Sathyabama University
- Chennai – 600119
- India
| | - J. Karthikeyan
- Department of Chemistry
- Sathyabama University
- Chennai – 600119
- India
| | | | - M. Muthu Tamizh
- Department of Chemistry
- Siddha Central Research Institute
- Central Council for Research in Siddha
- Chennai – 600106
- India
| | - A. Nityananda Shetty
- Department of Chemistry
- National Institute of Technology Karnataka
- Mangalore – 575025
- India
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88
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Multiple signal classification algorithm for super-resolution fluorescence microscopy. Nat Commun 2016; 7:13752. [PMID: 27934858 PMCID: PMC5155148 DOI: 10.1038/ncomms13752] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 10/31/2016] [Indexed: 11/20/2022] Open
Abstract
Single-molecule localization techniques are restricted by long acquisition and computational times, or the need of special fluorophores or biologically toxic photochemical environments. Here we propose a statistical super-resolution technique of wide-field fluorescence microscopy we call the multiple signal classification algorithm which has several advantages. It provides resolution down to at least 50 nm, requires fewer frames and lower excitation power and works even at high fluorophore concentrations. Further, it works with any fluorophore that exhibits blinking on the timescale of the recording. The multiple signal classification algorithm shows comparable or better performance in comparison with single-molecule localization techniques and four contemporary statistical super-resolution methods for experiments of in vitro actin filaments and other independently acquired experimental data sets. We also demonstrate super-resolution at timescales of 245 ms (using 49 frames acquired at 200 frames per second) in samples of live-cell microtubules and live-cell actin filaments imaged without imaging buffers.
Single-molecule localization microscopy offers super-resolution imaging, but needs a long acquisition time and a toxic photochemical environment. Here, the authors demonstrate a multiple signal classification algorithm that achieves a resolution of 50 nm with as few as 50 frames in a biologically conducive environment.
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89
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Wu J, He Z, Wang DL, Sun FL. Depletion of JMJD5 sensitizes tumor cells to microtubule-destabilizing agents by altering microtubule stability. Cell Cycle 2016; 15:2980-2991. [PMID: 27715397 DOI: 10.1080/15384101.2016.1234548] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Microtubules play essential roles in mitosis, cell migration, and intracellular trafficking. Drugs that target microtubules have demonstrated great clinical success in cancer treatment due to their capacity to impair microtubule dynamics in both mitotic and interphase stages. In a previous report, we demonstrated that JMJD5 associated with mitotic spindle and was required for proper mitosis. However, it remains elusive whether JMJD5 could regulate the stability of cytoskeletal microtubules and whether it affects the efficacy of microtubule-targeting agents. In this study, we find that JMJD5 localizes not only to the nucleus, a fraction of it also localizes to the cytoplasm. JMJD5 depletion decreases the acetylation and detyrosination of α-tubulin, both of which are markers of microtubule stability. In addition, microtubules in JMJD5-depleted cells are more sensitive to nocodazole-induced depolymerization, whereas JMJD5 overexpression increases α-tubulin detyrosination and enhances the resistance of microtubules to nocodazole. Mechanistic studies revealed that JMJD5 regulates MAP1B protein levels and that MAP1B overexpression rescued the microtubule destabilization induced by JMJD5 depletion. Furthermore, JMJD5 depletion significantly promoted apoptosis in cancer cells treated with the microtubule-targeting anti-cancer drugs vinblastine or colchicine. Together, these findings suggest that JMJD5 is required to regulate the stability of cytoskeletal microtubules and that JMJD5 depletion increases the susceptibility of cancer cells to microtubule-destabilizing agents.
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Affiliation(s)
- Junyu Wu
- a Department of Basic Medical Sciences , School of Medicine, Tsinghua University , Beijing , China
| | - Zhimin He
- a Department of Basic Medical Sciences , School of Medicine, Tsinghua University , Beijing , China
| | - Da-Liang Wang
- a Department of Basic Medical Sciences , School of Medicine, Tsinghua University , Beijing , China
| | - Fang-Lin Sun
- a Department of Basic Medical Sciences , School of Medicine, Tsinghua University , Beijing , China.,b Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Tongji University , Shanghai , China
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90
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Miyake N, Fukai R, Ohba C, Chihara T, Miura M, Shimizu H, Kakita A, Imagawa E, Shiina M, Ogata K, Okuno-Yuguchi J, Fueki N, Ogiso Y, Suzumura H, Watabe Y, Imataka G, Leong HY, Fattal-Valevski A, Kramer U, Miyatake S, Kato M, Okamoto N, Sato Y, Mitsuhashi S, Nishino I, Kaneko N, Nishiyama A, Tamura T, Mizuguchi T, Nakashima M, Tanaka F, Saitsu H, Matsumoto N. Biallelic TBCD Mutations Cause Early-Onset Neurodegenerative Encephalopathy. Am J Hum Genet 2016; 99:950-961. [PMID: 27666374 DOI: 10.1016/j.ajhg.2016.08.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/09/2016] [Indexed: 01/01/2023] Open
Abstract
We describe four families with affected siblings showing unique clinical features: early-onset (before 1 year of age) progressive diffuse brain atrophy with regression, postnatal microcephaly, postnatal growth retardation, muscle weakness/atrophy, and respiratory failure. By whole-exome sequencing, we identified biallelic TBCD mutations in eight affected individuals from the four families. TBCD encodes TBCD (tubulin folding co-factor D), which is one of five tubulin-specific chaperones playing a pivotal role in microtubule assembly in all cells. A total of seven mutations were found: five missense mutations, one nonsense, and one splice site mutation resulting in a frameshift. In vitro cell experiments revealed the impaired binding between most mutant TBCD proteins and ARL2, TBCE, and β-tubulin. The in vivo experiments using olfactory projection neurons in Drosophila melanogaster indicated that the TBCD mutations caused loss of function. The wide range of clinical severity seen in this neurodegenerative encephalopathy may result from the residual function of mutant TBCD proteins. Furthermore, the autopsied brain from one deceased individual showed characteristic neurodegenerative findings: cactus and somatic sprout formations in the residual Purkinje cells in the cerebellum, which are also seen in some diseases associated with mitochondrial impairment. Defects of microtubule formation caused by TBCD mutations may underlie the pathomechanism of this neurodegenerative encephalopathy.
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91
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Watanabe S, Borthakur D, Bressan A. Localization of Banana bunchy top virus and cellular compartments in gut and salivary gland tissues of the aphid vector Pentalonia nigronervosa. INSECT SCIENCE 2016; 23:591-602. [PMID: 25728903 DOI: 10.1111/1744-7917.12211] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/04/2015] [Indexed: 06/04/2023]
Abstract
Banana bunchy top virus (BBTV) (Nanoviridae: Babuvirus) is transmitted by aphids of the genus Pentalonia in a circulative manner. The cellular mechanisms by which BBTV translocates from the anterior midgut to the salivary gland epithelial tissues are not understood. Here, we used multiple fluorescent markers to study the distribution and the cellular localization of early and late endosomes, macropinosomes, lysosomes, microtubules, actin filaments, and lipid raft subdomains in the gut and principal salivary glands of Pentalonia nigronervosa. We applied colabeling assays, to colocalize BBTV viral particles with these cellular compartments and structures. Our results suggest that multiple potential cellular processes, including clathrin- and caveolae-mediated endocytosis and lipid rafts, may not be involved in BBTV internalization.
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Affiliation(s)
- Shizu Watanabe
- Department of Plant and Environmental Protection Sciences, University of Hawaii, 3050 Maile Way, Gilmore Hall, 96822, Honolulu, HI, USA
- Department of Molecular Biosciences and Bioengineering, University of Hawaii, 1955 East-West Road, Honolulu, HI, USA
| | - Dulal Borthakur
- Department of Molecular Biosciences and Bioengineering, University of Hawaii, 1955 East-West Road, Honolulu, HI, USA
| | - Alberto Bressan
- Department of Plant and Environmental Protection Sciences, University of Hawaii, 3050 Maile Way, Gilmore Hall, 96822, Honolulu, HI, USA
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92
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Pamula MC, Ti SC, Kapoor TM. The structured core of human β tubulin confers isotype-specific polymerization properties. J Cell Biol 2016; 213:425-33. [PMID: 27185835 PMCID: PMC4878094 DOI: 10.1083/jcb.201603050] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 04/26/2016] [Indexed: 11/22/2022] Open
Abstract
The tubulin gene family encodes multiple tubulin isotypes that can have distinct polymerization properties. Pamula et al. show that residue changes within β tubulin’s structured core are largely responsible for isotype-specific differences in dynamic instability. Diversity in cytoskeleton organization and function may be achieved through variations in primary sequence of tubulin isotypes. Recently, isotype functional diversity has been linked to a “tubulin code” in which the C-terminal tail, a region of substantial sequence divergence between isotypes, specifies interactions with microtubule-associated proteins. However, it is not known whether residue changes in this region alter microtubule dynamic instability. Here, we examine recombinant tubulin with human β isotype IIB and characterize polymerization dynamics. Microtubules with βIIB have catastrophe frequencies approximately threefold lower than those with isotype βIII, a suppression similar to that achieved by regulatory proteins. Further, we generate chimeric β tubulins with native tail sequences swapped between isotypes. These chimeras have catastrophe frequencies similar to that of the corresponding full-length construct with the same core sequence. Together, our data indicate that residue changes within the conserved β tubulin core are largely responsible for the observed isotype-specific changes in dynamic instability parameters and tune tubulin’s polymerization properties across a wide range.
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Affiliation(s)
- Melissa C Pamula
- Laboratory of Chemistry and Cell Biology, The Rockefeller University, New York, NY 10065
| | - Shih-Chieh Ti
- Laboratory of Chemistry and Cell Biology, The Rockefeller University, New York, NY 10065
| | - Tarun M Kapoor
- Laboratory of Chemistry and Cell Biology, The Rockefeller University, New York, NY 10065
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93
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Martel-Frachet V, Keramidas M, Nurisso A, DeBonis S, Rome C, Coll JL, Boumendjel A, Skoufias DA, Ronot X. IPP51, a chalcone acting as a microtubule inhibitor with in vivo antitumor activity against bladder carcinoma. Oncotarget 2016; 6:14669-86. [PMID: 26036640 PMCID: PMC4546496 DOI: 10.18632/oncotarget.4144] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 04/08/2015] [Indexed: 12/18/2022] Open
Abstract
We previously identified 1-(2,4-dimethoxyphenyl)-3-(1-methylindolyl) propenone (IPP51), a new chalcone derivative that is capable of inducing prometaphase arrest and subsequent apoptosis of bladder cancer cells. Here, we demonstrate that IPP51 selectively inhibits proliferation of tumor-derived cells versus normal non-tumor cells. IPP51 interfered with spindle formation and mitotic chromosome alignment. Accumulation of cyclin B1 and mitotic checkpoint proteins Bub1 and BubR1 on chromosomes in IPP51 treated cells indicated the activation of spindle-assembly checkpoint, which is consistent with the mitotic arrest. The antimitotic actions of other chalcones are often associated with microtubule disruption. Indeed, IPP51 inhibited tubulin polymerization in an in vitro assay with purified tubulin. In cells, IPP51 induced an increase in soluble tubulin. Furthermore, IPP51 inhibited in vitro capillary-like tube formation by endothelial cells, indicating that it has anti-angiogenic activity. Molecular docking showed that the indol group of IPP51 can be accommodated in the colchicine binding site of tubulin. This characteristic was confirmed by an in vitro competition assay demonstrating that IPP51 can compete for colchicine binding to soluble tubulin. Finally, in a human bladder xenograft mouse model, IPP51 inhibited tumor growth without signs of toxicity. Altogether, these findings suggest that IPP51 is an attractive new microtubule-targeting agent with potential chemotherapeutic value.
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Affiliation(s)
- Véronique Martel-Frachet
- Université Joseph Fourier, AGIM CNRS FRE, EPHE, GRENOBLE Cedex 9. Université Joseph Fourier, Grenoble, France
| | - Michelle Keramidas
- Unité INSERM/UJF U823, Centre de recherche Albert Bonniot, Grenoble, France
| | - Alessandra Nurisso
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet, Geneva, Switzerland
| | | | - Claire Rome
- Unité Inserm, Grenoble Institute of Neuroscience, Site Santé, Grenoble, France
| | - Jean-Luc Coll
- Unité INSERM/UJF U823, Centre de recherche Albert Bonniot, Grenoble, France
| | - Ahcène Boumendjel
- Université de Grenoble/CNRS, UMR, Département de Pharmacochimie Moléculaire, Grenoble Cedex, France
| | | | - Xavier Ronot
- Université Joseph Fourier, AGIM CNRS FRE, EPHE, GRENOBLE Cedex 9. Université Joseph Fourier, Grenoble, France
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94
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Petta I, Lievens S, Libert C, Tavernier J, De Bosscher K. Modulation of Protein-Protein Interactions for the Development of Novel Therapeutics. Mol Ther 2016; 24:707-18. [PMID: 26675501 PMCID: PMC4886928 DOI: 10.1038/mt.2015.214] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 11/12/2015] [Indexed: 01/10/2023] Open
Abstract
Protein-protein interactions (PPIs) underlie most biological processes. An increasing interest to investigate the unexplored potential of PPIs in drug discovery is driven by the need to find novel therapeutic targets for a whole range of diseases with a high unmet medical need. To date, PPI inhibition with small molecules is the mechanism that has most often been explored, resulting in significant progress towards drug development. However, also PPI stabilization is gradually gaining ground. In this review, we provide a focused overview of a number of PPIs that control critical regulatory pathways and constitute targets for the design of novel therapeutics. We discuss PPI-modulating small molecules that are already pursued in clinical trials. In addition, we review a number of PPIs that are still under preclinical investigation but for which preliminary data support their use as therapeutic targets.
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Affiliation(s)
- Ioanna Petta
- Receptor Research Laboratories, Cytokine Receptor Lab (CRL), VIB Department of Medical Protein Research, Ghent, Belgium
- Department of Biochemistry, Ghent University, Ghent, Belgium
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sam Lievens
- Receptor Research Laboratories, Cytokine Receptor Lab (CRL), VIB Department of Medical Protein Research, Ghent, Belgium
- Department of Biochemistry, Ghent University, Ghent, Belgium
| | - Claude Libert
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jan Tavernier
- Receptor Research Laboratories, Cytokine Receptor Lab (CRL), VIB Department of Medical Protein Research, Ghent, Belgium
- Department of Biochemistry, Ghent University, Ghent, Belgium
| | - Karolien De Bosscher
- Receptor Research Laboratories, Cytokine Receptor Lab (CRL), VIB Department of Medical Protein Research, Ghent, Belgium
- Department of Biochemistry, Ghent University, Ghent, Belgium
- Receptor Research Laboratories, Nuclear Receptor Lab (NRL), VIB Department of Medical Protein Research, Ghent, Belgium
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95
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Effects of Maternal Marginal Iodine Deficiency on Dendritic Morphology in the Hippocampal CA1 Pyramidal Neurons in Rat Offspring. Neuromolecular Med 2016; 18:203-15. [DOI: 10.1007/s12017-016-8391-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 03/19/2016] [Indexed: 01/05/2023]
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96
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Ferrara R, Pilotto S, Peretti U, Caccese M, Kinspergher S, Carbognin L, Karachaliou N, Rosell R, Tortora G, Bria E. Tubulin inhibitors in non-small cell lung cancer: looking back and forward. Expert Opin Pharmacother 2016; 17:1113-29. [DOI: 10.1517/14656566.2016.1157581] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- R. Ferrara
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - S. Pilotto
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - U. Peretti
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - M. Caccese
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - S. Kinspergher
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - L. Carbognin
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | | | - R. Rosell
- Pangaea Biotech, Barcelona, Spain
- Instituto Oncológico Dr Rosell, Quiron-Dexeus University Hospital, Barcelona, Spain
- Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Spain
- Molecular Oncology Research (MORe) Foundation, Barcelona, Spain
- Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti., Badalona, Spain
| | - G. Tortora
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - E. Bria
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
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97
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Kumar G, Mittal S, Sak K, Tuli HS. Molecular mechanisms underlying chemopreventive potential of curcumin: Current challenges and future perspectives. Life Sci 2016; 148:313-28. [PMID: 26876915 DOI: 10.1016/j.lfs.2016.02.022] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 01/25/2016] [Accepted: 02/07/2016] [Indexed: 12/11/2022]
Abstract
In recent years, natural compounds have received considerable attention in preventing and curing most dreadful diseases including cancer. The reason behind the use of natural compounds in chemoprevention is associated with fewer numbers of side effects than conventional chemotherapeutics. Curcumin (diferuloylmethane, PubMed CID: 969516), a naturally occurring polyphenol, is derived from turmeric, which is used as a common Indian spice. It governs numerous intracellular targets, including proteins involved in antioxidant response, immune response, apoptosis, cell cycle regulation and tumor progression. A huge mass of available studies strongly supports the use of Curcumin as a chemopreventive drug. However, the main challenge encountered is the low bioavailability of Curcumin. This extensive review covers various therapeutic interactions of Curcumin with its recognized cellular targets involved in cancer treatment, strategies to overcome the bioavailability issue and adverse effects associated with Curcumin consumption.
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Affiliation(s)
- Gaurav Kumar
- Department of Biochemistry, Delhi University, South Campus, New Delhi, India
| | - Sonam Mittal
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Katrin Sak
- Department of Hematology and Oncology, University of Tartu, Estonia
| | - Hardeep Singh Tuli
- Department of Biotechnology, Maharishi Markandeshwar University, Mulana-Ambala, India.
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98
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Fang J, Lin A, Qiu W, Cai H, Umar M, Chen R, Ming R. Transcriptome Profiling Revealed Stress-Induced and Disease Resistance Genes Up-Regulated in PRSV Resistant Transgenic Papaya. FRONTIERS IN PLANT SCIENCE 2016; 7:855. [PMID: 27379138 PMCID: PMC4909764 DOI: 10.3389/fpls.2016.00855] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 05/31/2016] [Indexed: 05/18/2023]
Abstract
Papaya is a productive and nutritious tropical fruit. Papaya Ringspot Virus (PRSV) is the most devastating pathogen threatening papaya production worldwide. Development of transgenic resistant varieties is the most effective strategy to control this disease. However, little is known about the genome-wide functional changes induced by particle bombardment transformation. We conducted transcriptome sequencing of PRSV resistant transgenic papaya SunUp and its PRSV susceptible progenitor Sunset to compare the transcriptional changes in young healthy leaves prior to infection with PRSV. In total, 20,700 transcripts were identified, and 842 differentially expressed genes (DEGs) randomly distributed among papaya chromosomes. Gene ontology (GO) category analysis revealed that microtubule-related categories were highly enriched among these DEGs. Numerous DEGs related to various transcription factors, transporters and hormone biosynthesis showed clear differences between the two cultivars, and most were up-regulated in transgenic papaya. Many known and novel stress-induced and disease-resistance genes were most highly expressed in SunUp, including MYB, WRKY, ERF, NAC, nitrate and zinc transporters, and genes involved in the abscisic acid, salicylic acid, and ethylene signaling pathways. We also identified 67,686 alternative splicing (AS) events in Sunset and 68,455 AS events in SunUp, mapping to 10,994 and 10,995 papaya annotated genes, respectively. GO enrichment for the genes displaying AS events exclusively in Sunset was significantly different from those in SunUp. Transcriptomes in Sunset and transgenic SunUp are very similar with noteworthy differences, which increased PRSV-resistance in transgenic papaya. No detrimental pathways and allergenic or toxic proteins were induced on a genome-wide scale in transgenic SunUp. Our results provide a foundation for unraveling the mechanism of PRSV resistance in transgenic papaya.
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Affiliation(s)
- Jingping Fang
- Key Lab of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry UniversityFuzhou, China
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Aiting Lin
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Weijing Qiu
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Hanyang Cai
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Muhammad Umar
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Rukai Chen
- Key Lab of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Ray Ming
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Agriculture and Forestry UniversityFuzhou, China
- Department of Plant Biology, University of Illinois at Urbana-ChampaignUrbana, IL, USA
- *Correspondence: Ray Ming
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99
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Islam MS, Kabir AMR, Inoue D, Sada K, Kakugo A. Enhanced dynamic instability of microtubules in a ROS free inert environment. Biophys Chem 2015; 211:1-8. [PMID: 26774598 DOI: 10.1016/j.bpc.2015.11.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 11/19/2015] [Accepted: 11/22/2015] [Indexed: 11/28/2022]
Abstract
Reactive oxygen species (ROS), one of the regulators in various biological processes, have recently been suspected to modulate microtubule (MT) dynamics in cells. However due to complicated cellular environment and unavailability of any in vitro investigation, no detail is understood yet. Here, by performing simple in vitro investigations, we have unveiled the effect of ROS on MT dynamics. By studying dynamic instability of MTs in a ROS free environment and comparing with that in the presence of ROS, we disclosed that MTs showed enhanced dynamics in the ROS free environment. All the parameters that define dynamic instability of MTs e.g., growth and shrinkage rates, rescue and catastrophe frequencies were significantly affected by the presence of ROS. This work clearly reveals the role of ROS in modulating MT dynamics in vitro, and would be a great help in understanding the role of ROS in regulation of MT dynamics in cells.
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Affiliation(s)
- Md Sirajul Islam
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan
| | | | - Daisuke Inoue
- Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Kazuki Sada
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan; Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Akira Kakugo
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan; Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.
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100
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Upadhyaya K, Hamidullah, Singh K, Arun A, Shukla M, Srivastava N, Ashraf R, Sharma A, Mahar R, Shukla SK, Sarkar J, Ramachandran R, Lal J, Konwar R, Tripathi RP. Identification of gallic acid based glycoconjugates as a novel tubulin polymerization inhibitors. Org Biomol Chem 2015; 14:1338-58. [PMID: 26659548 DOI: 10.1039/c5ob02113h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel class of gallic acid based glycoconjugates were designed and synthesized as potential anticancer agents. Among all the compounds screened, compound 2a showed potent anticancer activity against breast cancer cells. The latter resulted in tubulin polymerization inhibition and induced G2/M cell cycle arrest, generation of reactive oxygen species, mitochondrial depolarization and subsequent apoptosis in breast cancer cells. In addition, ultraviolet-visible spectroscopy and fluorescence quenching studies of the compound with tubulin confirmed direct interaction of compounds with tubulin. Molecular modeling studies revealed that it binds at the colchicine binding site in tubulin. Further, 2a also exhibited potent in vivo anticancer activity in LA-7 syngeneic rat mammary tumor model. Current data projects its strong candidature to be developed as anticancer agent.
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Affiliation(s)
- Kapil Upadhyaya
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute (CSIR-CDRI), Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India.
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