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Gong T, McNally KL, Konanoor S, Peraza A, Bailey C, Redemann S, McNally FJ. Roles of Tubulin Concentration during Prometaphase and Ran-GTP during Anaphase of Caenorhabditis elegans Meiosis. Life Sci Alliance 2024; 7:e202402884. [PMID: 38960623 PMCID: PMC11222656 DOI: 10.26508/lsa.202402884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/05/2024] Open
Abstract
In many animal species, the oocyte meiotic spindle, which is required for chromosome segregation, forms without centrosomes. In some systems, Ran-GEF on chromatin initiates spindle assembly. We found that in Caenorhabditis elegans oocytes, endogenously-tagged Ran-GEF dissociates from chromatin during spindle assembly but re-associates during meiotic anaphase. Meiotic spindle assembly occurred after auxin-induced degradation of Ran-GEF, but anaphase I was faster than controls and extrusion of the first polar body frequently failed. In search of a possible alternative pathway for spindle assembly, we found that soluble tubulin concentrates in the nuclear volume during germinal vesicle breakdown. We found that the concentration of soluble tubulin in the metaphase spindle region is enclosed by ER sheets which exclude cytoplasmic organelles including mitochondria and yolk granules. Measurement of the volume occupied by yolk granules and mitochondria indicated that volume exclusion would be sufficient to explain the concentration of tubulin in the spindle volume. We suggest that this concentration of soluble tubulin may be a redundant mechanism promoting spindle assembly near chromosomes.
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Affiliation(s)
- Ting Gong
- https://ror.org/05rrcem69 Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA, USA
| | - Karen L McNally
- https://ror.org/05rrcem69 Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA, USA
| | - Siri Konanoor
- https://ror.org/05rrcem69 Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA, USA
| | - Alma Peraza
- https://ror.org/05rrcem69 Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA, USA
| | - Cynthia Bailey
- https://ror.org/05rrcem69 Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA, USA
| | - Stefanie Redemann
- https://ror.org/0153tk833 Department of Cell Biology, University of Virginia, School of Medicine, Charlottesville, VA, USA
| | - Francis J McNally
- https://ror.org/05rrcem69 Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA, USA
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Borrego EA, Guerena CD, Schiaffino Bustamante AY, Gutierrez DA, Valenzuela CA, Betancourt AP, Varela-Ramirez A, Aguilera RJ. A Novel Pyrazole Exhibits Potent Anticancer Cytotoxicity via Apoptosis, Cell Cycle Arrest, and the Inhibition of Tubulin Polymerization in Triple-Negative Breast Cancer Cells. Cells 2024; 13:1225. [PMID: 39056806 PMCID: PMC11274517 DOI: 10.3390/cells13141225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 07/13/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
In this study, we screened a chemical library to find potent anticancer compounds that are less cytotoxic to non-cancerous cells. This study revealed that pyrazole PTA-1 is a potent anticancer compound. Additionally, we sought to elucidate its mechanism of action (MOA) in triple-negative breast cancer cells. Cytotoxicity was analyzed with the differential nuclear staining assay (DNS). Additional secondary assays were performed to determine the MOA of the compound. The potential MOA of PTA-1 was assessed using whole RNA sequencing, Connectivity Map (CMap) analysis, in silico docking, confocal microscopy, and biochemical assays. PTA-1 is cytotoxic at a low micromolar range in 17 human cancer cell lines, demonstrating less cytotoxicity to non-cancerous human cells, indicating a favorable selective cytotoxicity index (SCI) for the killing of cancer cells. PTA-1 induced phosphatidylserine externalization, caspase-3/7 activation, and DNA fragmentation in triple-negative breast MDA-MB-231 cells, indicating that it induces apoptosis. Additionally, PTA-1 arrests cells in the S and G2/M phases. Furthermore, gene expression analysis revealed that PTA-1 altered the expression of 730 genes at 24 h (198 upregulated and 532 downregulated). A comparison of these gene signatures with those within CMap indicated a profile similar to that of tubulin inhibitors. Subsequent studies revealed that PTA-1 disrupts microtubule organization and inhibits tubulin polymerization. Our results suggest that PTA-1 is a potent drug with cytotoxicity to various cancer cells, induces apoptosis and cell cycle arrest, and inhibits tubulin polymerization, indicating that PTA-1 is an attractive drug for future clinical cancer treatment.
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Affiliation(s)
- Edgar A. Borrego
- The Border Biomedical Research Center, The University of Texas El Paso, El Paso, TX 79968, USA; (C.D.G.); (A.Y.S.B.); (D.A.G.); (C.A.V.); (A.P.B.); (A.V.-R.)
- Department of Biological Sciences, The University of Texas El Paso, El Paso, TX 79968, USA
| | - Cristina D. Guerena
- The Border Biomedical Research Center, The University of Texas El Paso, El Paso, TX 79968, USA; (C.D.G.); (A.Y.S.B.); (D.A.G.); (C.A.V.); (A.P.B.); (A.V.-R.)
- Department of Biological Sciences, The University of Texas El Paso, El Paso, TX 79968, USA
| | - Austre Y. Schiaffino Bustamante
- The Border Biomedical Research Center, The University of Texas El Paso, El Paso, TX 79968, USA; (C.D.G.); (A.Y.S.B.); (D.A.G.); (C.A.V.); (A.P.B.); (A.V.-R.)
- Department of Biological Sciences, The University of Texas El Paso, El Paso, TX 79968, USA
| | - Denisse A. Gutierrez
- The Border Biomedical Research Center, The University of Texas El Paso, El Paso, TX 79968, USA; (C.D.G.); (A.Y.S.B.); (D.A.G.); (C.A.V.); (A.P.B.); (A.V.-R.)
- Department of Biological Sciences, The University of Texas El Paso, El Paso, TX 79968, USA
| | - Carlos A. Valenzuela
- The Border Biomedical Research Center, The University of Texas El Paso, El Paso, TX 79968, USA; (C.D.G.); (A.Y.S.B.); (D.A.G.); (C.A.V.); (A.P.B.); (A.V.-R.)
- Department of Biological Sciences, The University of Texas El Paso, El Paso, TX 79968, USA
| | - Ana P. Betancourt
- The Border Biomedical Research Center, The University of Texas El Paso, El Paso, TX 79968, USA; (C.D.G.); (A.Y.S.B.); (D.A.G.); (C.A.V.); (A.P.B.); (A.V.-R.)
- Department of Biological Sciences, The University of Texas El Paso, El Paso, TX 79968, USA
| | - Armando Varela-Ramirez
- The Border Biomedical Research Center, The University of Texas El Paso, El Paso, TX 79968, USA; (C.D.G.); (A.Y.S.B.); (D.A.G.); (C.A.V.); (A.P.B.); (A.V.-R.)
- Department of Biological Sciences, The University of Texas El Paso, El Paso, TX 79968, USA
| | - Renato J. Aguilera
- The Border Biomedical Research Center, The University of Texas El Paso, El Paso, TX 79968, USA; (C.D.G.); (A.Y.S.B.); (D.A.G.); (C.A.V.); (A.P.B.); (A.V.-R.)
- Department of Biological Sciences, The University of Texas El Paso, El Paso, TX 79968, USA
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Gong T, McNally KL, Konanoor S, Peraza A, Bailey C, Redemann S, McNally FJ. Roles of Tubulin Concentration during Prometaphase and Ran-GTP during Anaphase of C. elegans meiosis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.19.590357. [PMID: 38659754 PMCID: PMC11042349 DOI: 10.1101/2024.04.19.590357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
In many animal species, the oocyte meiotic spindle, which is required for chromosome segregation, forms without centrosomes. In some systems, Ran-GEF on chromatin initiates spindle assembly. We found that in C. elegans oocytes, endogenously-tagged Ran-GEF dissociates from chromatin during spindle assembly but re-associates during meiotic anaphase. Meiotic spindle assembly occurred after auxin-induced degradation of Ran-GEF but anaphase I was faster than controls and extrusion of the first polar body frequently failed. In search of a possible alternative pathway for spindle assembly, we found that soluble tubulin concentrates in the nuclear volume during germinal vesicle breakdown. We found that the concentration of soluble tubulin in the metaphase spindle region is enclosed by ER sheets which exclude cytoplasmic organelles including mitochondria and yolk granules. Measurement of the volume occupied by yolk granules and mitochondria indicated that volume exclusion would be sufficient to explain the concentration of tubulin in the spindle volume. We suggest that this concentration of soluble tubulin may be a redundant mechanism promoting spindle assembly near chromosomes.
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Affiliation(s)
- Ting Gong
- Department of Molecular and Cellular Biology, university of California, Davis, Davis, CA 95616, USA
| | - Karen L McNally
- Department of Molecular and Cellular Biology, university of California, Davis, Davis, CA 95616, USA
| | - Siri Konanoor
- Department of Molecular and Cellular Biology, university of California, Davis, Davis, CA 95616, USA
| | - Alma Peraza
- Department of Molecular and Cellular Biology, university of California, Davis, Davis, CA 95616, USA
| | - Cynthia Bailey
- Department of Molecular and Cellular Biology, university of California, Davis, Davis, CA 95616, USA
| | - Stefanie Redemann
- Department of Cell Biology, University of Virginia, School of Medicine, Charlottesville, VA, USA
| | - Francis J McNally
- Department of Molecular and Cellular Biology, university of California, Davis, Davis, CA 95616, USA
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Yancheva D, Argirova M, Georgieva I, Milanova V, Guncheva M, Rangelov M, Todorova N, Tzoneva R. Antiproliferative and Pro-Apoptotic Activity and Tubulin Dynamics Modulation of 1 H-Benzimidazol-2-yl Hydrazones in Human Breast Cancer Cell Line MDA-MB-231. Molecules 2024; 29:2400. [PMID: 38792260 PMCID: PMC11123699 DOI: 10.3390/molecules29102400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/10/2024] [Accepted: 05/17/2024] [Indexed: 05/26/2024] Open
Abstract
(1) Background: The aim of the work is the evaluation of in vitro antiproliferative and pro-apoptotic activity of four benzimidazole derivatives containing colchicine-like and catechol-like moieties with methyl group substitution in the benzimidazole ring against highly invasive breast cancer cell line MDA-MB-231 and their related impairment of tubulin dynamics. (2) Methods: The antiproliferative activity was assessed with the MTT assay. Alterations in tubulin polymerization were evaluated with an in vitro tubulin polymerization assay and a docking analysis. (3) Results: All derivatives showed time-dependent cytotoxicity with IC50 varying from 40 to 60 μM after 48 h and between 13 and 20 μM after 72 h. Immunofluorescent and DAPI staining revealed the pro-apoptotic potential of benzimidazole derivatives and their effect on tubulin dynamics in living cells. Compound 5d prevented tubulin aggregation and blocked mitosis, highlighting the importance of the methyl group and the colchicine-like fragment. (4) Conclusions: The benzimidazole derivatives demonstrated moderate cytotoxicity towards MDA-MB-231 by retarding the initial phase of tubulin polymerization. The derivative 5d containing a colchicine-like moiety and methyl group substitution in the benzimidazole ring showed potential as an antiproliferative agent and microtubule destabilizer by facilitating faster microtubule aggregation and disrupting cellular and nuclear integrity.
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Affiliation(s)
- Denitsa Yancheva
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Build. 9, 1113 Sofia, Bulgaria; (M.A.); (M.G.); (M.R.)
| | - Maria Argirova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Build. 9, 1113 Sofia, Bulgaria; (M.A.); (M.G.); (M.R.)
| | - Irina Georgieva
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Build. 21, 1113 Sofia, Bulgaria; (I.G.); (V.M.)
| | - Vanya Milanova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Build. 21, 1113 Sofia, Bulgaria; (I.G.); (V.M.)
| | - Maya Guncheva
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Build. 9, 1113 Sofia, Bulgaria; (M.A.); (M.G.); (M.R.)
| | - Miroslav Rangelov
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Build. 9, 1113 Sofia, Bulgaria; (M.A.); (M.G.); (M.R.)
| | - Nadezhda Todorova
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Str., 1113 Sofia, Bulgaria;
| | - Rumiana Tzoneva
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Build. 21, 1113 Sofia, Bulgaria; (I.G.); (V.M.)
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Rojas-Baron L, Senk K, Hermosilla C, Taubert A, Velásquez ZD. Toxoplasma gondii modulates the host cell cycle, chromosome segregation, and cytokinesis irrespective of cell type or species origin. Parasit Vectors 2024; 17:180. [PMID: 38581071 PMCID: PMC10996137 DOI: 10.1186/s13071-024-06244-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 03/11/2024] [Indexed: 04/07/2024] Open
Abstract
BACKGROUND Toxoplasma gondii is an apicomplexan intracellular obligate parasite and the etiological agent of toxoplasmosis in humans, domestic animals and wildlife, causing miscarriages and negatively impacting offspring. During its intracellular development, it relies on nutrients from the host cell, controlling several pathways and the cytoskeleton. T. gondii has been proven to control the host cell cycle, mitosis and cytokinesis, depending on the time of infection and the origin of the host cell. However, no data from parallel infection studies have been collected. Given that T. gondii can infect virtually any nucleated cell, including those of humans and animals, understanding the mechanism by which it infects or develops inside the host cell is essential for disease prevention. Therefore, we aimed here to reveal whether this modulation is dependent on a specific cell type or host cell species. METHODS We used only primary cells from humans and bovines at a maximum of four passages to ensure that all cells were counted with appropriate cell cycle checkpoint control. The cell cycle progression was analysed using fluorescence-activated cell sorting (FACS)-based DNA quantification, and its regulation was followed by the quantification of cyclin B1 (mitosis checkpoint protein). The results demonstrated that all studied host cells except bovine colonic epithelial cells (BCEC) were arrested in the S-phase, and none of them were affected in cyclin B1 expression. Additionally, we used an immunofluorescence assay to track mitosis and cytokinesis in uninfected and T. gondii-infected cells. RESULTS The results demonstrated that all studied host cell except bovine colonic epithelial cells (BCEC) were arrested in the S-phase, and none of them were affected in cyclin B1 expression. Our findings showed that the analysed cells developed chromosome segregation problems and failed to complete cytokinesis. Also, the number of centrosomes per mitotic pole was increased after infection in all cell types. Therefore, our data suggest that T. gondii modulates the host cell cycle, chromosome segregation and cytokinesis during infection or development regardless of the host cell origin or type.
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Affiliation(s)
- Lisbeth Rojas-Baron
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University of Giessen, Giessen, Germany
| | - Kira Senk
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University of Giessen, Giessen, Germany
| | - Carlos Hermosilla
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University of Giessen, Giessen, Germany
| | - Anja Taubert
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University of Giessen, Giessen, Germany
| | - Zahady D Velásquez
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University of Giessen, Giessen, Germany.
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Zhuang R, Liu H. Mechanism of regulation of KIF23 on endometrial cancer cell growth and apoptosis. Discov Oncol 2024; 15:83. [PMID: 38514510 PMCID: PMC10957832 DOI: 10.1007/s12672-024-00937-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 03/14/2024] [Indexed: 03/23/2024] Open
Abstract
OBJECTIVE The global incidence of endometrial cancer, a malignant tumor in females, is on the rise. It is one of the most common gynecological cancers. Early-stage endometrial cancers can often be treated successfully with uterine extirpation. However, those diagnosed at a later stage have a poor prognosis and encounter treatment challenges. Therefore, additional research is necessary to develop primary prevention strategies for high-risk women and improve survival rates among patients with endometrial cancer. Hence, gene therapy targeting KIF23 shows promise as an advanced strategy for the treatment of endometrial cancer. METHODS Immunohistochemistry, Western blotting, and PCR were used to examine the expression of KIF23 and its associated pathway factors in endometrial cancer tissue (specifically Ishikawa and SNGM cells, respectively). We investigated the functional roles of KIF23 using CCK-8, colony-forming proliferation assays, Transwell migration assays, and xenotransplantation in mice. RESULTS Immunohistochemistry analysis showed variations in the expression levels of KIF23 between endometrial cancer tissue and normal endometrium tissue. KIF23 downregulated BAX and caspase-3 protein expression while upregulating BCL-2 protein expression. Additionally, knocking out KIF23 inhibits endometrial cancer cell proliferation and migration while promoting cell death. Mechanistically, our study provides evidence that KIF23 promotes endometrial cancer cell proliferation by activating the ERK and AKT/PI3K pathways, while simultaneously inhibiting programmed cell death in endometrial cancer. CONCLUSION Our study provides evidence to support the inhibition of endometrial cancer by KIF23 knockdown. This offers valuable insights for future research on potential therapeutic strategies for this type of cancer.
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Affiliation(s)
- Ruiying Zhuang
- Jinzhou Medical University, Jinzhou, Liaoning Province, China
| | - Haiyan Liu
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning Province, China.
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7
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Rojas-Barón L, Hermosilla C, Taubert A, Velásquez ZD. Toxoplasma gondii Me49 and NED strains arrest host cell cycle progression and alter chromosome segregation in a strain-independent manner. Front Microbiol 2024; 15:1336267. [PMID: 38450167 PMCID: PMC10915083 DOI: 10.3389/fmicb.2024.1336267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/02/2024] [Indexed: 03/08/2024] Open
Abstract
Toxoplasma gondii is an obligate intracellular parasite that modulates a broad range of host cell functions to guarantee its intracellular development and replication. T. gondii includes three classical clonal lineages exhibiting different degrees of virulence. Regarding the genetic diversity of T. gondii circulating in Europe, type II strains and, to a lesser extent, type III strains are the dominant populations, both in humans and animals. Infections with the type I strain led to widespread parasite dissemination and death in mice, while type III is considered avirulent. Previously, we demonstrated that primary endothelial cells infected with the T. gondii RH strain (haplotype I) were arrested in the G2/M-phase transition, triggering cytokinesis failure and chromosome missegregation. Since T. gondii haplotypes differ in their virulence, we here studied whether T. gondii-driven host cell cycle perturbation is strain-dependent. Primary endothelial cells were infected with T. gondii Me49 (type II strain) or NED (type III strain), and their growth kinetics were compared up to cell lysis (6-30 h p. i.). In this study, only slight differences in the onset of full proliferation were observed, and developmental data in principle matched those of the RH strain. FACS-based DNA quantification to estimate cell proportions experiencing different cell cycle phases (G0/1-, S-, and G2/M-phase) revealed that Me49 and NED strains both arrested the host cell cycle in the S-phase. Cyclins A2 and B1 as key molecules of S- and M-phase were not changed by Me49 infection, while NED infection induced cyclin B1 upregulation. To analyze parasite-driven alterations during mitosis, we demonstrated that both Me49 and NED infections led to impaired host cellular chromosome segregation and irregular centriole overduplication. Moreover, in line with the RH strain, both strains boosted the proportion of binucleated cells within infected endothelial cell layers, thereby indicating enhanced cytokinesis failure. Taken together, we demonstrate that all parasite-driven host cell cycle arrest, chromosome missegregation, and binucleated phenotypes are T. gondii-specific but strain independent.
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Affiliation(s)
- Lisbeth Rojas-Barón
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany
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8
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Gao Z, Huang E, Wang W, Xu L, Xu W, Zheng T, Rui M. Patronin regulates presynaptic microtubule organization and neuromuscular junction development in Drosophila. iScience 2024; 27:108944. [PMID: 38318379 PMCID: PMC10839449 DOI: 10.1016/j.isci.2024.108944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 11/20/2023] [Accepted: 01/15/2024] [Indexed: 02/07/2024] Open
Abstract
Synapses are fundamental components of the animal nervous system. Synaptic cytoskeleton is essential for maintaining proper neuronal development and wiring. Perturbations in neuronal microtubules (MTs) are correlated with numerous neuropsychiatric disorders. Despite discovering multiple synaptic MT regulators, the importance of MT stability, and particularly the polarity of MT in synaptic function, is still under investigation. Here, we identify Patronin, an MT minus-end-binding protein, for its essential role in presynaptic regulation of MT organization and neuromuscular junction (NMJ) development. Analyses indicate that Patronin regulates synaptic development independent of Klp10A. Subsequent research elucidates that it is short stop (Shot), a member of the Spectraplakin family of large cytoskeletal linker molecules, works synergistically with Patronin to govern NMJ development. We further raise the possibility that normal synaptic MT polarity contributes to proper NMJ morphology. Overall, this study demonstrates an unprecedented role of Patronin, and a potential involvement of MT polarity in synaptic development.
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Affiliation(s)
- Ziyang Gao
- School of Life Science and Technology, the Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing 210096, China
| | - Erqian Huang
- School of Life Science and Technology, the Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing 210096, China
| | - Wanting Wang
- School of Life Science and Technology, the Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing 210096, China
| | - Lizhong Xu
- School of Life Science and Technology, the Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing 210096, China
| | - Wanyue Xu
- School of Life Science and Technology, the Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing 210096, China
| | - Ting Zheng
- School of Life Science and Technology, the Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing 210096, China
| | - Menglong Rui
- School of Life Science and Technology, the Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing 210096, China
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9
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Sun M, Wang Y, Xin G, Yang B, Jiang Q, Zhang C. NuSAP regulates microtubule flux and Kif2A localization to ensure accurate chromosome congression. J Cell Biol 2024; 223:e202108070. [PMID: 38117947 PMCID: PMC10733630 DOI: 10.1083/jcb.202108070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/10/2023] [Accepted: 11/26/2023] [Indexed: 12/22/2023] Open
Abstract
Precise chromosome congression and segregation requires the proper assembly of a steady-state metaphase spindle, which is dynamic and maintained by continuous microtubule flux. NuSAP is a microtubule-stabilizing and -bundling protein that promotes chromosome-dependent spindle assembly. However, its function in spindle dynamics remains unclear. Here, we demonstrate that NuSAP regulates the metaphase spindle length control. Mechanistically, NuSAP facilitates kinetochore capture and spindle assembly by promoting Eg5 binding to microtubules. It also prevents excessive microtubule depolymerization through interaction with Kif2A, which reduces Kif2A spindle-pole localization. NuSAP is phosphorylated by Aurora A at Ser-240 during mitosis, and this phosphorylation promotes its interaction with Kif2A on the spindle body and reduces its localization with the spindle poles, thus maintaining proper spindle microtubule flux. NuSAP knockout resulted in the formation of shorter spindles with faster microtubule flux and chromosome misalignment. Taken together, we uncover that NuSAP participates in spindle assembly, dynamics, and metaphase spindle length control through the regulation of microtubule flux and Kif2A localization.
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Affiliation(s)
- Mengjie Sun
- The Academy for Cell and Life Health, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
- The Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, College of Life Sciences, Peking University, Beijing, China
| | - Yao Wang
- The Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, College of Life Sciences, Peking University, Beijing, China
| | - Guangwei Xin
- The Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, College of Life Sciences, Peking University, Beijing, China
| | - Biying Yang
- The Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, College of Life Sciences, Peking University, Beijing, China
| | - Qing Jiang
- The Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, College of Life Sciences, Peking University, Beijing, China
| | - Chuanmao Zhang
- The Academy for Cell and Life Health, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
- The Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, College of Life Sciences, Peking University, Beijing, China
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10
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Iqbal S, Firdous F, Furqan M, Bilal A, Fozail S, Pohl SÖG, Doleschall NJ, Myant KB, Singh U, Emwas AH, Jaremko M, Faisal A, Saleem RSZ. Synthesis and characterization of bis-amide SSE1917 as a microtubule-stabilizing anticancer agent. Bioorg Chem 2024; 143:107094. [PMID: 38199139 DOI: 10.1016/j.bioorg.2023.107094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/27/2023] [Accepted: 12/31/2023] [Indexed: 01/12/2024]
Abstract
Microtubule dynamics are critical for spindle assembly and chromosome segregation during cell division. Pharmacological inhibition of microtubule dynamics in cells causes prolonged mitotic arrest, resulting in apoptosis, an approach extensively employed in treating different types of cancers. The present study reports the synthesis of thirty-two novel bis-amides (SSE1901-SSE1932) and the evaluation of their antiproliferative activities. N-(1-oxo-3-phenyl-1-(phenylamino)propan-2-yl)benzamide (SSE1917) exhibited the most potent activity with GI50 values of 0.331 ± 0.01 µM in HCT116 colorectal and 0.48 ± 0.27 µM in BT-549 breast cancer cells. SSE1917 stabilized microtubules in biochemical and cellular assays, bound to taxol site in docking studies, and caused aberrant mitosis and G2/M arrest in cells. Prolonged treatment of cells with the compound increased p53 expression and triggered apoptotic cell death. Furthermore, SSE1917 suppressed the growth of both mouse and patient-derived human colon cancer organoids, highlighting its potential therapeutic value as an anticancer agent.
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Affiliation(s)
- Sana Iqbal
- Department of Chemistry and Chemical Engineering, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Farhat Firdous
- Department of Chemistry and Chemical Engineering, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan; Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Muhammad Furqan
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Aishah Bilal
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Salman Fozail
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Sebastian Öther-Gee Pohl
- Institute of Genetics and Cancer, The University of Edinburgh, Western General Hospital Campus, Crewe Road, Edinburgh EH4 2XU, Scotland, United Kingdom
| | - Nora Julia Doleschall
- Institute of Genetics and Cancer, The University of Edinburgh, Western General Hospital Campus, Crewe Road, Edinburgh EH4 2XU, Scotland, United Kingdom
| | - Kevin B Myant
- Institute of Genetics and Cancer, The University of Edinburgh, Western General Hospital Campus, Crewe Road, Edinburgh EH4 2XU, Scotland, United Kingdom
| | - Upendra Singh
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Abdul-Hamid Emwas
- KAUST Core Labs, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Mariusz Jaremko
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Amir Faisal
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan.
| | - Rahman Shah Zaib Saleem
- Department of Chemistry and Chemical Engineering, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan.
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El-Sayed ASA, Shindia A, Ammar H, Seadawy MG, Khashana SA. Bioprocessing of Epothilone B from Aspergillus fumigatus under solid state fermentation: Antiproliferative activity, tubulin polymerization and cell cycle analysis. BMC Microbiol 2024; 24:43. [PMID: 38291363 PMCID: PMC10829302 DOI: 10.1186/s12866-024-03184-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 01/08/2024] [Indexed: 02/01/2024] Open
Abstract
Epothilone derivatives have been recognized as one of the most powerful anticancer drugs towards solid tumors, for their unique affinity to bind with β-tubulin microtubule arrays, stabilizing their disassembly, causing cell death. Sornagium cellulosum is the main source for Epothilone, however, the fermentation bioprocessing of this myxobacteria is the main challenge for commercial production of Epothilone. The metabolic biosynthetic potency of epothilone by Aspergillus fumigatus, an endophyte of Catharanthus roseus, raises the hope for commercial epothilone production, for their fast growth rate and feasibility of manipulating their secondary metabolites. Thus, nutritional optimization of A. fumigatus for maximizing their epothilone productivity under solid state fermentation process is the objective. The highest yield of epothilone was obtained by growing A. fumigatus on orange peels under solid state fermentation (2.2 μg/g), bioprocessed by the Plackett-Burman design. The chemical structure of the extracted epothilone was resolved from the HPLC and LC-MS/MS analysis, with molecular mass 507.2 m/z and identical molecular fragmentation pattern of epothilone B of S. cellulosum. The purified A. fumigatus epothilone had a significant activity towards HepG2 (IC50 0.98 μg/ml), Pancl (IC50 1.5 μg/ml), MCF7 (IC50 3.7 μg/ml) and WI38 (IC50 4.6 μg/ml), as well as a strong anti-tubulin polymerization activity (IC50 0.52 μg/ml) compared to Paclitaxel (2.0 μg/ml). The effect of A. fumigatus epothilone on the immigration ability of HepG2 cells was assessed, as revealed from the wound closure of the monolayer cells that was estimated by ~ 63.7 and 72.5%, in response to the sample and doxorubicin, respectively, compared to negative control. From the Annexin V-PI flow cytometry results, a significant shift of the normal cells to the apoptosis was observed in response to A. fumigatus epothilone by ~ 20 folds compared to control cells, with the highest growth arrest of the HepG2 cells at the G0-G1 stage.
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Affiliation(s)
- Ashraf S A El-Sayed
- Enzymology and Fungal Biotechnology lab, Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt.
| | - Ahmed Shindia
- Enzymology and Fungal Biotechnology lab, Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
| | - Hala Ammar
- Enzymology and Fungal Biotechnology lab, Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
| | - Mohamed G Seadawy
- Biological Prevention Department, Egyptian Ministry of Defense, Cairo, Egypt
| | - Samar A Khashana
- Enzymology and Fungal Biotechnology lab, Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
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12
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Zheng J, Mallon J, Lammers A, Rados T, Litschel T, Moody ERR, Ramirez-Diaz DA, Schmid A, Williams TA, Bisson-Filho AW, Garner E. Salactin, a dynamically unstable actin homolog in Haloarchaea. mBio 2023; 14:e0227223. [PMID: 37966230 PMCID: PMC10746226 DOI: 10.1128/mbio.02272-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 10/05/2023] [Indexed: 11/16/2023] Open
Abstract
IMPORTANCE Protein filaments play important roles in many biological processes. We discovered an actin homolog in halophilic archaea, which we call Salactin. Just like the filaments that segregate DNA in eukaryotes, Salactin grows out of the cell poles towards the middle, and then quickly depolymerizes, a behavior known as dynamic instability. Furthermore, we see that Salactin affects the distribution of DNA in daughter cells when cells are grown in low-phosphate media, suggesting Salactin filaments might be involved in segregating DNA when the cell has only a few copies of the chromosome.
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Affiliation(s)
- Jenny Zheng
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts, USA
| | - John Mallon
- Department of Biology, Rosenstiel Basic Medical Science Research Center, Brandeis University, Waltham, Massachusetts, USA
| | - Alex Lammers
- Physiology Course, Marine Biological Laboratory, Woods Hole, Massachusetts, USA
- Department of Biomedical Engineering, The Biological Design Center, Boston University, Boston, Massachusetts, USA
- The Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts, USA
| | - Theopi Rados
- Department of Biology, Rosenstiel Basic Medical Science Research Center, Brandeis University, Waltham, Massachusetts, USA
| | - Thomas Litschel
- Physiology Course, Marine Biological Laboratory, Woods Hole, Massachusetts, USA
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, USA
| | - Edmund R. R. Moody
- School of Earth Sciences, University of Bristol, Bristol, United Kingdom
| | - Diego A. Ramirez-Diaz
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts, USA
| | - Amy Schmid
- Department of Biology, Duke University, Durham, North Carolina, USA
- Center for Genomics and Computational Biology, Duke University, Durham, North Carolina, USA
| | - Tom A. Williams
- School of Biological Sciences, University of Bristol, Bristol, United Kingdom
| | - Alexandre W. Bisson-Filho
- Department of Biology, Rosenstiel Basic Medical Science Research Center, Brandeis University, Waltham, Massachusetts, USA
| | - Ethan Garner
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts, USA
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13
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Tang W, Zhang L, Li J, Guan Y. KCNQ1OT1 promotes retinoblastoma progression by targeting miR-339-3p that suppresses KIF23. Int Ophthalmol 2023:10.1007/s10792-023-02641-1. [PMID: 37198502 DOI: 10.1007/s10792-023-02641-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 01/19/2023] [Indexed: 05/19/2023]
Abstract
BACKGROUND Long noncoding RNAs (lncRNAs) are involved in tumor formation and development. KCNQ1OT1 regulates the malignant proliferation of retinoblastoma (RB), but the specific mechanism remains to be further investigated. METHODS The KCNQ1OT1, miR-339-3p and KIF23 expression levels in RB were detected by qRT-PCR and western blotting. The cell viability, proliferation, migration ability and caspase-3 activity of RB cells were evaluated by CCK-8, BrdU, transwell and caspase-3 activity analysis. Western blot was used to detect the Bax and Bcl-2 protein expression in RB cells. The binding relationship between KCNQ1OT1, miR-339-3p and KIF23 was detected by luciferase, RIP and RNA pull-down assay. RESULTS KCNQ1OT1 and KIF23 were up-regulated frequently in RB, and miR-339-3p was down-regulated. Functional studies showed that downregulation of KCNQ1OT1 or KIF23 inhibited the survival and migration of RB cells, and facilitated apoptosis. Interference with miR-339-3p showed the opposite effect. Mechanisms suggested that KCNQ1OT1 exited its oncogenic activity by positively regulating the expression of KIF23 and sponging miR-339-3p. CONCLUSION KCNQ1OT1/miR-339-3p/KIF23 may be a new biomarker for the diagnosis and treatment of RB.
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Affiliation(s)
- Wenting Tang
- Department of Ophthalmology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, 610500, Sichuan, China
| | - Li Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, 610500, Sichuan, China
| | - Jing Li
- Department of Ophthalmology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, 610500, Sichuan, China
| | - Yu Guan
- Department of Ophthalmology, The 2nd Affiliated Hospital of Chengdu Medical College, Nuclear Industry 416 Hospital, No. 4, North 4th Erhuan Street, Chengdu, 610051, Sichuan, China.
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14
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Yang J, Wang Z, Wang C, Tang D, Zang Z, Stover NA, Chen X, Li L. Single-cell transcriptome reveals cell division-regulated hub genes in the unicellular eukaryote Paramecium. Eur J Protistol 2023; 89:125978. [PMID: 37080141 DOI: 10.1016/j.ejop.2023.125978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/20/2023] [Accepted: 04/03/2023] [Indexed: 04/22/2023]
Abstract
The transition from growth to division during the cell cycle encompasses numerous conserved processes such as large-scale DNA replication and protein synthesis. In ciliate cells, asexual cell division is accompanied by additional cellular changes including amitotic nuclear division, extensive ciliogenesis, and trichocyst replication. However, the molecular mechanisms underlying these processes remain elusive. In this study, we present single-cell gene expression profiles of Paramecium cf. multimicronucleatum cells undergoing cell division. Our results reveal that the most up-regulated genes in dividing cells compared to growing cells are associated with 1) cell cycle signaling pathways including transcription, DNA replication, chromosome segregation and protein degradation; 2) microtubule proteins and tubulin glycylases which are essential for ciliogenesis, nuclei separation and structural differentiation signaling; and 3) trichocyst matrix proteins involved in trichocyst synthesis and reproduction. Furthermore, weighted gene co-expression network analysis identified hub genes that may play crucial roles during cell division. Our findings provide insights into cell cycle regulators, microtubules and trichocyst matrix proteins that may exert influence on this process in ciliates.
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Affiliation(s)
- Juan Yang
- Laboratory of Marine Protozoan Biodiversity & Evolution, Marine College, Shandong University, Weihai 264209, China
| | - Zhenyuan Wang
- Laboratory of Marine Protozoan Biodiversity & Evolution, Marine College, Shandong University, Weihai 264209, China
| | - Chundi Wang
- Laboratory of Marine Protozoan Biodiversity & Evolution, Marine College, Shandong University, Weihai 264209, China
| | - Danxu Tang
- Laboratory of Marine Protozoan Biodiversity & Evolution, Marine College, Shandong University, Weihai 264209, China
| | - Zihan Zang
- Laboratory of Marine Protozoan Biodiversity & Evolution, Marine College, Shandong University, Weihai 264209, China
| | - Naomi A Stover
- Department of Biology, Bradley University, Peoria 61625, USA
| | - Xiao Chen
- Laboratory of Marine Protozoan Biodiversity & Evolution, Marine College, Shandong University, Weihai 264209, China; Suzhou Research Institute, Shandong University, Suzhou 215123, China.
| | - Lifang Li
- Laboratory of Marine Protozoan Biodiversity & Evolution, Marine College, Shandong University, Weihai 264209, China.
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15
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Zhou Y, Xing X, Zhou J, Jiang H, Cen P, Jin C, Zhong Y, Zhou R, Wang J, Tian M, Zhang H. Therapeutic potential of tumor treating fields for malignant brain tumors. Cancer Rep (Hoboken) 2023; 6:e1813. [PMID: 36987739 PMCID: PMC10172187 DOI: 10.1002/cnr2.1813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/02/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND Malignant brain tumors are among the most threatening diseases of the central nervous system, and despite increasingly updated treatments, the prognosis has not been improved. Tumor treating fields (TTFields) are an emerging approach in cancer treatment using intermediate-frequency and low-intensity electric field and can lead to the development of novel therapeutic options. RECENT FINDINGS A series of biological processes induced by TTFields to exert anti-cancer effects have been identified. Recent studies have shown that TTFields can alter the bioelectrical state of macromolecules and organelles involved in cancer biology. Massive alterations in cancer cell proteomics and transcriptomics caused by TTFields were related to cell biological processes as well as multiple organelle structures and activities. This review addresses the mechanisms of TTFields and recent advances in the application of TTFields therapy in malignant brain tumors, especially in glioblastoma (GBM). CONCLUSIONS As a novel therapeutic strategy, TTFields have shown promising results in many clinical trials, especially in GBM, and continue to evolve. A growing number of patients with malignant brain tumors are being enrolled in ongoing clinical studies demonstrating that TTFields-based combination therapies can improve treatment outcomes.
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Affiliation(s)
- Youyou Zhou
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Nuclear Medicine and Molecular Imaging, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Xiaoqing Xing
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Nuclear Medicine and Molecular Imaging, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Jinyun Zhou
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Nuclear Medicine and Molecular Imaging, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Han Jiang
- Faculty of Science and Technology, Department of Electrical and Computer Engineering, Biomedical Imaging Laboratory (BIG), University of Macau, Taipa, Macau SAR, China
| | - Peili Cen
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Nuclear Medicine and Molecular Imaging, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Chentao Jin
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Nuclear Medicine and Molecular Imaging, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Yan Zhong
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Nuclear Medicine and Molecular Imaging, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Rui Zhou
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Nuclear Medicine and Molecular Imaging, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Jing Wang
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Nuclear Medicine and Molecular Imaging, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Mei Tian
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Nuclear Medicine and Molecular Imaging, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, Zhejiang, China
- Human Phenome Institute, Fudan University, Shanghai, China
| | - Hong Zhang
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Nuclear Medicine and Molecular Imaging, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, Zhejiang, China
- College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, Zhejiang, China
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16
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TPX2 Amplification-Driven Aberrant Mitosis in Culture Adapted Human Embryonic Stem Cells with gain of 20q11.21. Stem Cell Rev Rep 2023:10.1007/s12015-023-10514-4. [PMID: 36862329 DOI: 10.1007/s12015-023-10514-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2023] [Indexed: 03/03/2023]
Abstract
BACKGROUND Despite highly effective machinery for the maintenance of genome integrity in human embryonic stem cells (hESCs), the frequency of genetic aberrations during in-vitro culture has been a serious issue for future clinical applications. METHOD By passaging hESCs over a broad range of timepoints (up to 6 years), the isogenic hESC lines with different passage numbers with distinct cellular characteristics, were established. RESULT We found that mitotic aberrations, such as the delay of mitosis, multipolar centrosomes, and chromosome mis-segregation, were increased in parallel with polyploidy compared to early-passaged hESCs (EP-hESCs) with normal copy number. Through high-resolution genome-wide approaches and transcriptome analysis, we found that culture adapted-hESCs with a minimal amplicon in chromosome 20q11.21 highly expressed TPX2, a key protein for governing spindle assembly and cancer malignancy. Consistent with these findings, the inducible expression of TPX2 in EP-hESCs reproduced aberrant mitotic events, such as the delay of mitotic progression, spindle stabilization, misaligned chromosomes, and polyploidy. CONCLUSION These studies suggest that the increased transcription of TPX2 in culture adapted hESCs could contribute to an increase in aberrant mitosis due to altered spindle dynamics.
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17
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Fang J, Chun Y, Guo T, Ren M, Zhao J, Li X. Rice kinesin-related protein STD1 and microtubule-associated protein MAP65-5 cooperatively control microtubule bundling. PLANTA 2023; 257:71. [PMID: 36862199 DOI: 10.1007/s00425-023-04106-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
STD1 specifically interacts with MAP65-5 in rice and they cooperatively control microtubule bundles in phragmoplast expansion during cell division. Microtubules play critical roles during the cell cycle progression in the plant cell. We previously reported that STEMLESS DWARF 1 (STD1), a kinesin-related protein, was localized specifically to the phragmoplast midzone during telophase to regulate the lateral expansion of phragmoplast in rice (Oryza sativa). However, how STD1 regulates microtubule organization remains unknown. Here, we found that STD1 interacted directly with MAP65-5, a member of the microtubule-associated proteins (MAPs). Both STD1 and MAP65-5 could form homodimers and bundle microtubules individually. Compared with MAP65-5, the microtubules bundled by STD1 were disassembled completely into single microtubules after adding ATP. Conversely, the interaction of STD1 with MAP65-5 enhanced the microtubule bundling. These results suggest STD1 and MAP65-5 might cooperatively regulate microtubule organization in the phragmoplast at telophase.
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Affiliation(s)
- Jingjing Fang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yan Chun
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Tingting Guo
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, China
| | - Mengmeng Ren
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jinfeng Zhao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xueyong Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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18
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Müller S. Assessment of Spindle Shape Control by Spindle Poleward Flux Measurements and FRAP Bulk Analysis. Methods Mol Biol 2023; 2604:113-125. [PMID: 36773229 DOI: 10.1007/978-1-0716-2867-6_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
In plants, the segregation of genetic material is achieved by an acentrosomal, mitotic spindle. This macromolecular machinery consists of different microtubule subpopulations and interacting proteins. The majority of what we know about the assembly and shape control of the mitotic spindle arose from vertebrate model systems. The dynamic properties of the individual tubulin polymers are crucial for the accurate assembly of the spindle array and are modulated by microtubule-associated motor and non-motor proteins. The mitotic spindle relies on a phenomenon called poleward microtubule flux that is critical to establish spindle shape, chromosome alignment, and segregation. This flux is under control of the non-motor microtubule-associated proteins and force-generating motors. Despite the large number of (plant-specific) kinesin motor proteins expressed during mitosis, their mitotic roles remain largely elusive. Moreover, reports on mitotic spindle formation and shape control in higher plants are scarce. In this chapter, an overview of the basic principles and methods concerning live imaging of prometa- and metaphase spindles and the analysis of spindle microtubule flux using fluorescence recovery after photobleaching is provided.
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Affiliation(s)
- Sabine Müller
- Department of Biology, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany.
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19
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Gao M, Qiu Y, Cao T, Li D, Wang J, Jiao Y, Chen Z, Huang J. Insufficient HtrA2 causes meiotic defects in aging germinal vesicle oocytes. Reprod Biol Endocrinol 2022; 20:173. [PMID: 36539842 PMCID: PMC9764539 DOI: 10.1186/s12958-022-01048-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 12/09/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND High-temperature requirement protease A2 (HtrA2/Omi) is a mitochondrial chaperone that is highly conserved from bacteria to humans. It plays an important role in mitochondrial homeostasis and apoptosis. In this study, we investigated the role of HtrA2 in mouse oocyte maturation. METHODS The role of HtrA2 in mouse oocyte maturation was investigated by employing knockdown (KD) or overexpression (OE) of HtrA2 in young or old germinal vesicle (GV) oocytes. We employed immunoblotting, immunostaining, fluorescent intensity quantification to test the HtrA2 knockdown on the GV oocyte maturation progression, spindle assembly checkpoint, mitochondrial distribution, spindle organization, chromosome alignment, actin polymerization, DNA damage and chromosome numbers and acetylated tubulin levels. RESULTS We observed a significant reduction in HtrA2 protein levels in aging germinal vesicle (GV) oocytes. Young oocytes with low levels of HtrA2 due to siRNA knockdown were unable to complete meiosis and were partially blocked at metaphase I (MI). They also displayed significantly more BubR1 on kinetochores, indicating that the spindle assembly checkpoint was triggered at MI. Extrusion of the first polar body (Pb1) was significantly less frequent and oocytes with large polar bodies were observed when HtrA2 was depleted. In addition, HtrA2 knockdown induced meiotic spindle/chromosome disorganization, leading to aneuploidy at metaphase II (MII), possibly due to the elevated level of acetylated tubulin. Importantly, overexpression of HtrA2 partially rescued spindle/chromosome disorganization and reduced the rate of aneuploidy in aging GV oocytes. CONCLUSIONS Collectively, our data suggest that HtrA2 is a key regulator of oocyte maturation, and its deficiency with age appears to contribute to reproduction failure in females.
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Affiliation(s)
- Min Gao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 51000, China
- Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yanling Qiu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
- Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Tianqi Cao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
- Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Dungao Li
- The Reproduction Medicine Center of Hui Zhou Municipal Central Hospital, Huizhou, 516001, China
| | - Jingwen Wang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
- Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yiren Jiao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
- Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Zhiyun Chen
- The Reproduction Medicine Center of Hui Zhou Municipal Central Hospital, Huizhou, 516001, China.
| | - Junjiu Huang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 51000, China.
- Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China.
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20
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Du X, Chen C, Xiao Y, Cui Y, Yang L, Li X, Liu X, Wang R, Tan B. Research on application of tumor treating fields in glioblastoma: A bibliometric and visual analysis. Front Oncol 2022; 12:1055366. [DOI: 10.3389/fonc.2022.1055366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/24/2022] [Indexed: 11/11/2022] Open
Abstract
BackgroundGlioblastoma, one of the common tumors of the central nervous system (CNS), is prone to recurrence even after standard treatment protocols. As an innovative physiotherapy method emerging in recent years, the tumor treating fields (TTFields) technique has been approved for the treatment of glioblastoma due to its non-invasive and portable features. The purpose of this study is to visualize and analyze the scientific results and research trends in TTFields therapy for glioblastoma.MethodsPublications related to TTFields therapy for glioblastoma were searched in the Web of Science Core Collection (WoSCC) database in September 2022. A bibliometric and visual analysis of publications in this field was performed mainly using CiteSpace and R software for country/region, author, journal, reference and keyword.ResultsA total of 618 publications in this field were retrieved, and 248 were finally obtained according to the search criteria, including 159 articles (64.11%) and 89 reviews (37.89%). The cumulative number of publications increased year by year, with an average growth rate (AGR) of 28.50%. The test results of Pearson correlation coefficient showed a high positive correlation between publications and citations (r=0.937, p<0.001). The USA had the largest number of publications (123, 49.60%), followed by Germany (32, 12.90%) and China (30, 12.10%). As for the country/region collaborations, the USA cooperated most closely with other countries/regions, followed by Germany and China. The degree of collaboration (DC) between countries/regions was 25.81%. The institutions with the largest number of publications were Tel Aviv Univ (10), Harvard Med Sch (10) and Novocure Ltd (10). Moreover, Wong E (18) possessed the greatest number of publications, followed by Weinberg U (11) and Kirson E (10). The DC between authors was 97.58%. STUPP R (236) was the most cited author followed by KIRSON ED (164) and GILADI M (104). JOURNAL OF NEURO-ONCOLOGY (22) was the journal with the largest number of published publications (75), followed by FRONTIERS IN ONCOLOGY (15) and CANCERS (13). The top 10 keywords that occurred frequently included glioblastoma (156), tumor treating field (152), temozolomide (134), randomized phase III (48), brain (46), survivor (46), cancer (44), trial (42), alternating electric field (42) and radiotherapy (36). Furthermore, cluster analysis was performed on the basis of keyword co-occurrence, and finally 15 clusters were formed to determine the current research status and future development trend of TTFields therapy for glioblastoma.ConclusionTTFields has been increasingly known as the fourth novel physical anti-tumor therapy in addition to surgery, radiotherapy and anti-tumor drugs. Cooperation and communication between countries/regions need to be enhanced in future research. Several studies have demonstrated the therapeutic potential of TTFields in glioma, and its application alone or in combination with other treatments has become a current research hotspot.
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21
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Ghalia HE, Amina G, Aissouq AE, Oussama C, Hicham EH, Abdelkrim O, Mohammed B. A quantitative study of the structure-activity relationship and molecular docking of 5.6.7-trimethoxy-N-aryl-2-styrylquinolin-4-amines as potential anticancer agents using quantum chemical descriptors and statistical methods. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Kim S, Leem J, Oh JS, Kim JS. Cytotoxicity of 9,10-Phenanthrenequinone Impairs Mitotic Progression and Spindle Assembly Independent of ROS Production in HeLa Cells. TOXICS 2022; 10:toxics10060327. [PMID: 35736935 PMCID: PMC9227850 DOI: 10.3390/toxics10060327] [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] [Received: 05/17/2022] [Revised: 06/10/2022] [Accepted: 06/14/2022] [Indexed: 11/16/2022]
Abstract
The polycyclic aromatic hydrocarbon quinone derivative 9,10-phenanthrenequinone (9,10-PQ) is one of the most abundant and toxic components found in diesel exhaust particles (DEPs). These DEPs are created during diesel fuel combustion and are considered the main source of urban air pollution. As 9,10-PQ can produce excessive reactive oxygen species (ROS) through redox cycling, it has been shown to exert potent cytotoxic effects against various cell types. However, the mechanisms underlying this cytotoxicity remain unclear. In this study, we showed that 9,10-PQ exerts cytotoxicity by impairing mitotic progression and spindle assembly in HeLa cells. Exposure to 9,10-PQ impaired spindle assembly and chromosome alignment, resulting in delayed mitotic entry and progression in HeLa cells. Furthermore, 9,10-PQ exposure decreased the CEP192 and p-Aurora A levels at the spindle poles. Notably, these mitotic defects induced by 9,10-PQ were not rescued by scavenging ROS, implying the ROS-independent activity of 9,10-PQ. Therefore, our results provide the first evidence that 9,10-PQ exerts its cytotoxicity through specific inhibition of mitotic progression and spindle assembly, independent of ROS.
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Affiliation(s)
- Seul Kim
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea;
| | - Jiyeon Leem
- Department of Integrative Biotechnology, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Korea;
| | - Jeong Su Oh
- Department of Integrative Biotechnology, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Korea;
- Correspondence: (J.S.O.); (J.-S.K.)
| | - Jae-Sung Kim
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea;
- Correspondence: (J.S.O.); (J.-S.K.)
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23
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I B, López-Jiménez P, Mena I, Viera A, Page J, González-Martínez J, Maestre C, Malumbres M, Suja JA, Gómez R. Haspin participates in AURKB recruitment to centromeres and contributes to chromosome congression in male mouse meiosis. J Cell Sci 2022; 135:275954. [PMID: 35694956 DOI: 10.1242/jcs.259546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 06/06/2022] [Indexed: 11/20/2022] Open
Abstract
Chromosome segregation requires that centromeres properly attach to spindle microtubules. This essential step regulates the accuracy of cell division and therefore must be precisely regulated. One of the main centromeric regulatory signaling pathways is the Haspin-H3T3ph-chromosomal passenger complex (CPC) cascade, which is responsible for the recruitment of the CPC to the centromeres. In mitosis, Haspin kinase phosphorylates histone H3 at threonine 3 (H3T3ph), an essential epigenetic mark that recruits the CPC, whose catalytic component is Aurora B kinase. However, the centromeric Haspin-H3T3ph-CPC pathway remains largely uncharacterized in mammalian male meiosis. We have analyzed Haspin functions by either its chemical inhibition in cultured spermatocytes using LDN-192960, or the ablation of Haspin gene in Haspin-/-. Our studies suggest that Haspin kinase activity is required for proper chromosome congression during both meiotic divisions and for the recruitment of Aurora B and kinesin MCAK to meiotic centromeres. However, the absence of H3T3ph histone mark does not alter Borealin and SGO2 centromeric localization. These results add new and relevant information regarding the regulation of the Haspin-H3T3ph-CPC pathway and centromere function during meiosis.
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Affiliation(s)
- Berenguer I
- Cell Biology Unit, Department of Biology, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
| | - P López-Jiménez
- Cell Biology Unit, Department of Biology, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
| | - I Mena
- Cell Biology Unit, Department of Biology, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
| | - A Viera
- Cell Biology Unit, Department of Biology, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
| | - J Page
- Cell Biology Unit, Department of Biology, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
| | - J González-Martínez
- Cell Division and Cancer group, Spanish National Cancer Research Centre (CNIO), 29029 Madrid, Spain
| | - C Maestre
- Cell Division and Cancer group, Spanish National Cancer Research Centre (CNIO), 29029 Madrid, Spain
| | - M Malumbres
- Cell Division and Cancer group, Spanish National Cancer Research Centre (CNIO), 29029 Madrid, Spain
| | - J A Suja
- Cell Biology Unit, Department of Biology, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
| | - R Gómez
- Cell Biology Unit, Department of Biology, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
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24
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Mishra D, Srinivasan R. Catching a Walker in the Act-DNA Partitioning by ParA Family of Proteins. Front Microbiol 2022; 13:856547. [PMID: 35694299 PMCID: PMC9178275 DOI: 10.3389/fmicb.2022.856547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 04/28/2022] [Indexed: 12/01/2022] Open
Abstract
Partitioning the replicated genetic material is a crucial process in the cell cycle program of any life form. In bacteria, many plasmids utilize cytoskeletal proteins that include ParM and TubZ, the ancestors of the eukaryotic actin and tubulin, respectively, to segregate the plasmids into the daughter cells. Another distinct class of cytoskeletal proteins, known as the Walker A type Cytoskeletal ATPases (WACA), is unique to Bacteria and Archaea. ParA, a WACA family protein, is involved in DNA partitioning and is more widespread. A centromere-like sequence parS, in the DNA is bound by ParB, an adaptor protein with CTPase activity to form the segregation complex. The ParA ATPase, interacts with the segregation complex and partitions the DNA into the daughter cells. Furthermore, the Walker A motif-containing ParA superfamily of proteins is associated with a diverse set of functions ranging from DNA segregation to cell division, cell polarity, chemotaxis cluster assembly, cellulose biosynthesis and carboxysome maintenance. Unifying principles underlying the varied range of cellular roles in which the ParA superfamily of proteins function are outlined. Here, we provide an overview of the recent findings on the structure and function of the ParB adaptor protein and review the current models and mechanisms by which the ParA family of proteins function in the partitioning of the replicated DNA into the newly born daughter cells.
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Affiliation(s)
- Dipika Mishra
- School of Biological Sciences, National Institute of Science Education and Research, Bhubaneswar, India
- Homi Bhabha National Institutes, Mumbai, India
| | - Ramanujam Srinivasan
- School of Biological Sciences, National Institute of Science Education and Research, Bhubaneswar, India
- Homi Bhabha National Institutes, Mumbai, India
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25
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Wu R, Guzman-Sepulveda J, Kalra A, Tuszynski J, Dogariu A. Thermal hysteresis in microtubule assembly/disassembly dynamics: The aging-induced degradation of tubulin dimers. Biochem Biophys Rep 2022; 29:101199. [PMID: 35036585 PMCID: PMC8749447 DOI: 10.1016/j.bbrep.2021.101199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/29/2021] [Accepted: 12/31/2021] [Indexed: 11/08/2022] Open
Abstract
The assembly/disassembly of biological macromolecules plays an important role in their biological functionalities. Although the dynamics of tubulin polymers and their super-assembly into microtubule structures is critical for many cellular processes, details of their cyclical polymerization/depolymerization are not fully understood. Here, we use a specially designed light scattering technique to continuously examine the effects of temperature cycling on the process of microtubule assembly/disassembly. We observe a thermal hysteresis loop during tubulin assembly/disassembly, consistently with earlier reports on the coexistence of tubulin and microtubules as a phase transition. In a cyclical process, the structural hysteresis has a kinetic component that depends on the rate of temperature change but also an intrinsic thermodynamic component that depends on the protein topology, possibly related to irreversible processes. Analyzing the evolution of such thermal hysteresis loops over successive cycles, we found that the assembly/disassembly ceases after some time, which is indicative of protein aging leading to its inability to self-assemble after a finite number of temperature cycles. The emergence of assembly-incompetent tubulin could have major consequences for human pathologies related to microtubules, including aging, neurodegenerative diseases and cancer.
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Affiliation(s)
- R. Wu
- CREOL, College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USA
| | - J.R. Guzman-Sepulveda
- CREOL, College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USA
| | - A.P. Kalra
- Department of Physics, University of Alberta, 11335 Saskatchewan Dr NW, Edmonton, Alberta, T6G 2M9, Canada
| | - J.A. Tuszynski
- Department of Physics, University of Alberta, 11335 Saskatchewan Dr NW, Edmonton, Alberta, T6G 2M9, Canada
- DIMEAS, Polytechnic di Torino, Turin, I-10129, Italy
| | - A. Dogariu
- CREOL, College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USA
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26
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Shen A, Liu L, Huang Y, Shen Z, Wu M, Chen X, Wu X, Lin X, Chen Y, Li L, Cheng Y, Chu J, Sferra TJ, Wei L, Zhuang Q, Peng J. Down-Regulating HAUS6 Suppresses Cell Proliferation by Activating the p53/p21 Pathway in Colorectal Cancer. Front Cell Dev Biol 2022; 9:772077. [PMID: 35096810 PMCID: PMC8790508 DOI: 10.3389/fcell.2021.772077] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/24/2021] [Indexed: 12/15/2022] Open
Abstract
Background: HAUS6 participates in microtubule-dependent microtubule amplification, but its role in malignancies including colorectal cancer (CRC) has not been explored. We therefore assessed the potential oncogenic activities of HAUS6 in CRC. Results: HAUS6 mRNA and protein expression is higher in CRC tissues, and high HAUS6 expression is correlated with shorter overall survival in CRC patients. HAUS6 knockdown in CRC cell lines suppressed cell growth in vitro and in vivo by inhibiting cell viability, survival and arresting cell cycle progression at G0/G1, while HAUS6 over-expression increased cell viability. We showed that these effects are dependent on activation of the p53/p21 signalling pathway by reducing p53 and p21 degradation. Moreover, combination of HAUS6 knockdown and 5-FU treatment further enhanced the suppression of cell proliferation of CRC cells by increasing activation of the p53/p21 pathway. Conclusion: Our study highlights a potential oncogenic role for HAUS6 in CRC. Targeting HAUS6 may be a promising novel prognostic marker and chemotherapeutic target for treating CRC patients.
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Affiliation(s)
- Aling Shen
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Liya Liu
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Yue Huang
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Zhiqing Shen
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Meizhu Wu
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xiaoping Chen
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xiangyan Wu
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xiaoying Lin
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Youqin Chen
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China.,Department of Pediatrics, Case Western Reserve University School of Medicine, Rainbow Babies and Children's Hospital, Cleveland, OH, United States
| | - Li Li
- Department of Health Management, Fujian Provincial Hospital, Fuzhou, China
| | - Ying Cheng
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Jianfeng Chu
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Thomas J Sferra
- Department of Health Management, Fujian Provincial Hospital, Fuzhou, China
| | - Lihui Wei
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Qunchuan Zhuang
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Jun Peng
- Academy of Integrative Medicine, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine in Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
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27
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Yang Y, Jiang H. Mechanical properties of external confinement modulate the rounding dynamics of cells. Biophys J 2021; 120:2306-2316. [PMID: 33864788 DOI: 10.1016/j.bpj.2021.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 03/02/2021] [Accepted: 04/09/2021] [Indexed: 10/21/2022] Open
Abstract
Many studies have demonstrated that mitotic cells can round up against external impediments. However, how the stiffness of external confinement affects the dynamics of rounding force/pressure and cell volume remains largely unknown. Here, we develop a theoretical framework to study the rounding of adherent cells confined between a substrate and a cantilever. We show that the rounding force and pressure increase exclusively with the effective confinement on the cell, which is related to the cantilever stiffness and the separation between cantilever and substrate. Remarkably, an increase of cantilever stiffness from 0.001 to 1 N/m can lead to a 100-fold change in rounding force. This model also predicts an active role of confinement stiffness in regulating the dynamics of cell volume and hydrostatic pressure. We find that the dynamic changes of cellular volume and hydrostatic pressure after osmotic shocks are opposite if the cantilever is soft, whereas the dynamic changes of cellular volume and pressure are the same if the cantilever is stiff. Taken together, this work demonstrates that confinement stiffness appears as a critical regulator in regulating the dynamics of rounding force and pressure. Our findings also indicate that the difference in cantilever stiffness need to be considered when comparing the measured rounding force and pressure from various experiments.
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Affiliation(s)
- Yuehua Yang
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Hefei National Laboratory for Physical Science at the Microscale, CAS Center for Excellence in Complex System Mechanics, Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui, China
| | - Hongyuan Jiang
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Hefei National Laboratory for Physical Science at the Microscale, CAS Center for Excellence in Complex System Mechanics, Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui, China.
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28
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Alfaro E, López‐Jiménez P, González‐Martínez J, Malumbres M, Suja JA, Gómez R. PLK1 regulates centrosome migration and spindle dynamics in male mouse meiosis. EMBO Rep 2021; 22:e51030. [PMID: 33615693 PMCID: PMC8025030 DOI: 10.15252/embr.202051030] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 01/14/2021] [Accepted: 01/21/2021] [Indexed: 12/20/2022] Open
Abstract
Cell division requires the regulation of karyokinesis and cytokinesis, which includes an essential role of the achromatic spindle. Although the functions of centrosomes are well characterised in somatic cells, their role during vertebrate spermatogenesis remains elusive. We have studied the dynamics of the meiotic centrosomes in male mouse during both meiotic divisions. Results show that meiotic centrosomes duplicate twice: first duplication occurs in the leptotene/zygotene transition, while the second occurs in interkinesis. The maturation of duplicated centrosomes during the early stages of prophase I and II are followed by their separation and migration to opposite poles to form bipolar spindles I and II. The study of the genetic mouse model Plk1(Δ/Δ) indicates a central role of Polo-like kinase 1 in pericentriolar matrix assembly, in centrosome maturation and migration, and in the formation of the bipolar spindles during spermatogenesis. In addition, in vitro inhibition of Polo-like kinase 1 and Aurora A in organotypic cultures of seminiferous tubules points out to a prominent role of both kinases in the regulation of the formation of meiotic bipolar spindles.
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Affiliation(s)
- Enrique Alfaro
- Departamento de BiologíaFacultad de CienciasUnidad de Biología CelularUniversidad Autónoma de MadridMadridSpain
| | - Pablo López‐Jiménez
- Departamento de BiologíaFacultad de CienciasUnidad de Biología CelularUniversidad Autónoma de MadridMadridSpain
| | | | - Marcos Malumbres
- Cell Division and Cancer GroupSpanish National Cancer Research Centre (CNIO)MadridSpain
| | - José A Suja
- Departamento de BiologíaFacultad de CienciasUnidad de Biología CelularUniversidad Autónoma de MadridMadridSpain
| | - Rocío Gómez
- Departamento de BiologíaFacultad de CienciasUnidad de Biología CelularUniversidad Autónoma de MadridMadridSpain
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29
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Rominiyi O, Vanderlinden A, Clenton SJ, Bridgewater C, Al-Tamimi Y, Collis SJ. Tumour treating fields therapy for glioblastoma: current advances and future directions. Br J Cancer 2021; 124:697-709. [PMID: 33144698 PMCID: PMC7884384 DOI: 10.1038/s41416-020-01136-5] [Citation(s) in RCA: 132] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 09/16/2020] [Accepted: 10/05/2020] [Indexed: 12/13/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common primary brain tumour in adults and continues to portend poor survival, despite multimodal treatment using surgery and chemoradiotherapy. The addition of tumour-treating fields (TTFields)-an approach in which alternating electrical fields exert biophysical force on charged and polarisable molecules known as dipoles-to standard therapy, has been shown to extend survival for patients with newly diagnosed GBM, recurrent GBM and mesothelioma, leading to the clinical approval of this approach by the FDA. TTFields represent a non-invasive anticancer modality consisting of low-intensity (1-3 V/cm), intermediate-frequency (100-300 kHz), alternating electric fields delivered via cutaneous transducer arrays configured to provide optimal tumour-site coverage. Although TTFields were initially demonstrated to inhibit cancer cell proliferation by interfering with mitotic apparatus, it is becoming increasingly clear that TTFields show a broad mechanism of action by disrupting a multitude of biological processes, including DNA repair, cell permeability and immunological responses, to elicit therapeutic effects. This review describes advances in our current understanding of the mechanisms by which TTFields mediate anticancer effects. Additionally, we summarise the landscape of TTFields clinical trials across various cancers and consider how emerging preclinical data might inform future clinical applications for TTFields.
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Affiliation(s)
- Ola Rominiyi
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield, UK.
- Department of Neurosurgery, Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK.
| | - Aurelie Vanderlinden
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield, UK
| | - Susan Jane Clenton
- Department of Clinical Oncology, Weston Park Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Caroline Bridgewater
- Department of Clinical Oncology, Weston Park Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Yahia Al-Tamimi
- Department of Neurosurgery, Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Spencer James Collis
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield, UK.
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30
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Ding T, Li J, Sun J, Fan X, Shi C, Zhou D, Deng R. Association of kinesin family member 2A with increased disease risk, deteriorative clinical characteristics, and shorter survival profiles in acute myeloid leukemia. ACTA ACUST UNITED AC 2020; 54:e9173. [PMID: 33331418 PMCID: PMC7747876 DOI: 10.1590/1414-431x20209173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 08/20/2020] [Indexed: 12/14/2022]
Abstract
This study aimed to explore the correlation of kinesin family member 2A (KIF2A) expression with disease risk, clinical characteristics, and prognosis of acute myeloid leukemia (AML), and investigate the effect of KIF2A knockdown on AML cell activities in vitro. Bone marrow samples were collected from 176 AML patients and 40 healthy donors, and KIF2A expression was measured by real-time quantitative polymerase chain reaction. Treatment response, event-free survival (EFS), and overall survival (OS) were assessed in AML patients. In vitro, KIF2A expression in AML cell lines and CD34+ cells (from healthy donors) was measured, and the effect of KIF2A knockdown on AML cell proliferation and apoptosis in HL-60 and KG-1 cells was detected. KIF2A expression was greater in AML patients compared to healthy donors, and receiver operating characteristic curve indicated that KIF2A expression predicted increased AML risk (area under curve: 0.793 (95%CI: 0.724-0.826)). In AML patients, KIF2A expression positively correlated with white blood cells, monosomal karyotype, and high risk stratification. Furthermore, no correlation of KIF2A expression with complete remission or hematopoietic stem cell transplantation was found. Kaplan-Meier curves showed that KIF2A expression was negatively correlated with EFS and OS. In vitro experiments showed that KIF2A was overexpressed in AML cell lines (KG-1, HL-60, ME-1, and HT-93) compared to CD34+ cells, moreover, cell proliferation was reduced but apoptosis was increased by KIF2A knockdown in HL-60 and KG-1 cells. In conclusion, KIF2A showed potential to be a biomarker and treatment target in AML.
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Affiliation(s)
- Tianling Ding
- Department of Hematology, Huashan Hospital, Fudan University, Shanghai, China.,Department of Hematology, Huashan Hospital North, Fudan University, Shanghai, China
| | - Jialing Li
- Shanghai Qeejen Bio-tech Institution, Shanghai, China
| | - Jianhong Sun
- Shanghai Qeejen Bio-tech Institution, Shanghai, China
| | - Xiaoman Fan
- Shanghai Qeejen Bio-tech Institution, Shanghai, China
| | - Chunli Shi
- Shanghai Qeejen Bio-tech Institution, Shanghai, China
| | - Dong Zhou
- Shanghai Qeejen Bio-tech Institution, Shanghai, China
| | - Ruoyu Deng
- Shanghai Qeejen Bio-tech Institution, Shanghai, China
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31
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Ibrahim TS, Hawwas MM, Malebari AM, Taher ES, Omar AM, O’Boyle NM, McLoughlin E, Abdel-Samii ZK, Elshaier YAMM. Potent Quinoline-Containing Combretastatin A-4 Analogues: Design, Synthesis, Antiproliferative, and Anti-Tubulin Activity. Pharmaceuticals (Basel) 2020; 13:E393. [PMID: 33203182 PMCID: PMC7698209 DOI: 10.3390/ph13110393] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 01/03/2023] Open
Abstract
A novel series of quinoline derivatives of combretastatin A-4 incorporating rigid hydrazone and a cyclic oxadiazole linkers were synthesized and have demonstrated potent tubulin polymerization inhibitory properties. Many of these novel derivatives have shown significant antiproliferative activities in the submicromolar range. The most potent compound, 19h, demonstrated superior IC50 values ranging from 0.02 to 0.04 µM against four cancer cell lines while maintaining low cytotoxicity in MCF-10A non-cancer cells, thereby suggesting 19h's selectivity towards proliferating cancer cells. In addition to tubulin polymerization inhibition, 19h caused cell cycle arrest in MCF-7 cells at the G2/M phase and induced apoptosis. Collectively, these findings indicate that 19h holds potential for further investigation as a potent chemotherapeutic agent targeting tubulin.
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Affiliation(s)
- Tarek S. Ibrahim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.M.); (A.M.O.)
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt;
| | - Mohamed M. Hawwas
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut 71524, Egypt; (M.M.H.); (E.S.T.)
| | - Azizah M. Malebari
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.M.); (A.M.O.)
| | - Ehab S. Taher
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut 71524, Egypt; (M.M.H.); (E.S.T.)
| | - Abdelsattar M. Omar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.M.); (A.M.O.)
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Cairo 11884, Egypt
| | - Niamh M. O’Boyle
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, Ireland; (N.M.O.); (E.M.)
| | - Eavan McLoughlin
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Trinity Biomedical Sciences Institute, 152-160 Pearse Street, Dublin 2, Ireland; (N.M.O.); (E.M.)
| | - Zakaria K. Abdel-Samii
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt;
| | - Yaseen A. M. M. Elshaier
- Department of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City 32958, Egypt;
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Gao CT, Ren J, Yu J, Li SN, Guo XF, Zhou YZ. KIF23 enhances cell proliferation in pancreatic ductal adenocarcinoma and is a potent therapeutic target. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1394. [PMID: 33313139 PMCID: PMC7723550 DOI: 10.21037/atm-20-1970] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Background In recent research, high expression of kinesin family member 23 (KIF23), one of the kinesin motor proteins involved in the regulation of cytokinesis, has been shown to be related to poor prognosis in glioma and paclitaxel-resistant gastric cancer, as a results of the enhancement of proliferation, migration, and invasion. In this study, we analyzed the role of KIF23 in the progression of pancreatic ductal adenocarcinoma. Methods A bioinformatic method was used to analyze the KIF23 mRNA level in pancreatic tumor tissues compared with normal pancreatic tissues and to analyze the connection between high KIF23 expression and prognosis. We examined the expression of KIF23 using immunohistochemistry and analyzed the connection between the expression of KIF23 and clinicopathological features in pancreatic ductal adenocarcinoma patients. In addition, a colony formation assay, MTT assay, and western blot assay were performed in vitro, along with a mouse xenograft model in vivo, to analyze the effect of KIF23 on proliferation. Further, the correlation between KIF23 and CDCA8 was analyzed by TCGA and immunohistochemical data. Results Bioinformatic results showed that KIF23 mRNA expression was higher in pancreatic tumor tissues than in normal pancreatic tissues and a poor prognosis has been linked to the high expression of KIF23. Immunohistochemistry revealed that KIF23 was highly expressed at the protein level and high expression of KIF23 correlated with adverse clinicopathological features. Our experimental results demonstrated that knockdown of KIF23 could inhibit the proliferation of pancreatic cells. Further, a positive correlation between KIF23 and CDCA8 expression existed, and KIF23 might promote pancreatic cancer proliferation by affecting CDCA8 expression. Conclusions Our data showed that high expression of KIF23 is associated with a poor prognosis, and KIF23 might be a potential therapeutic target for pancreatic ductal adenocarcinoma.
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Affiliation(s)
- Chun-Tao Gao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Jin Ren
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, China
| | - Jie Yu
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China.,The First Hospital of Shanxi Medical University, Taiyuan, China
| | - Sheng-Nan Li
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Xiao-Fan Guo
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Yi-Zhang Zhou
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
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Kaibori Y, Katayama K, Tanaka Y, Ikeuchi M, Ogawa M, Ikeda Y, Yuki R, Saito Y, Nakayama Y. Kinase activity-independent role of EphA2 in the regulation of M-phase progression. Exp Cell Res 2020; 395:112207. [PMID: 32750331 DOI: 10.1016/j.yexcr.2020.112207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 07/17/2020] [Accepted: 07/26/2020] [Indexed: 02/05/2023]
Abstract
Cell division is a tightly regulated, essential process for cell proliferation. Very recently, we reported that EphA2 is phosphorylated at Ser897, via the Cdk1/MEK/ERK/RSK pathway, during M phase and contributes to proper M-phase progression by maintaining cortical rigidity via the EphA2pSer897/ephexin4/RhoG pathway. Here, we show that EphA2 kinase activity is dispensable for M-phase progression. Although EphA2 knockdown delayed this progression, the delay was rescued by an EphA2 mutant expression with an Asp739 to Asn substitution, as well as by wild-type EphA2. Western blotting analysis confirmed that the Asp739Asn mutant lost its EphA2 kinase activity. Like wild-type EphA2, the Asp739Asn mutant was localized to the plasma membrane irrespective of cell cycle. While RhoG localization to the plasma membrane was decreased in EphA2 knockdown cells, it was rescued by re-expression of wild-type EphA2 but not via the mutant containing the Ser897 to Ala substitution. This confirmed our recent report that phosphorylation at Ser897 is responsible for RhoG localization to the plasma membrane. In agreement with the M-phase progression's rescue effect, the Asp739Asn mutant rescued RhoG localization in EphA2 knockdown cells. These results suggest that EphA2 regulates M-phase progression in a manner independent of its kinase activity.
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Affiliation(s)
- Yuichiro Kaibori
- Department of Biochemistry & Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Kiriko Katayama
- Department of Biochemistry & Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Yuka Tanaka
- Department of Biochemistry & Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Masayoshi Ikeuchi
- Department of Biochemistry & Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Mika Ogawa
- Department of Biochemistry & Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Yuki Ikeda
- Department of Biochemistry & Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Ryuzaburo Yuki
- Department of Biochemistry & Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Youhei Saito
- Department of Biochemistry & Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Yuji Nakayama
- Department of Biochemistry & Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan.
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Yamashita N, Morita M, Yokota H, Mimori-Kiyosue Y. Digital Spindle: A New Way to Explore Mitotic Functions by Whole Cell Data Collection and a Computational Approach. Cells 2020; 9:E1255. [PMID: 32438637 PMCID: PMC7291015 DOI: 10.3390/cells9051255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/15/2020] [Accepted: 05/17/2020] [Indexed: 02/06/2023] Open
Abstract
From cells to organisms, every living system is three-dimensional (3D), but the performance of fluorescence microscopy has been largely limited when attempting to obtain an overview of systems' dynamic processes in three dimensions. Recently, advanced light-sheet illumination technologies, allowing drastic improvement in spatial discrimination, volumetric imaging times, and phototoxicity/photobleaching, have been making live imaging to collect precise and reliable 3D information increasingly feasible. In particular, lattice light-sheet microscopy (LLSM), using an ultrathin light-sheet, enables whole-cell 3D live imaging of cellular processes, including mitosis, at unprecedented spatiotemporal resolution for extended periods of time. This technology produces immense and complex data, including a significant amount of information, raising new challenges for big image data analysis and new possibilities for data utilization. Once the data are digitally archived in a computer, the data can be reused for various purposes by anyone at any time. Such an information science approach has the potential to revolutionize the use of bioimage data, and provides an alternative method for cell biology research in a data-driven manner. In this article, we introduce examples of analyzing digital mitotic spindles and discuss future perspectives in cell biology.
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Affiliation(s)
- Norio Yamashita
- Image Processing Research Team, RIKEN Center for Advanced Photonics, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; (N.Y.); (M.M.); (H.Y.)
| | - Masahiko Morita
- Image Processing Research Team, RIKEN Center for Advanced Photonics, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; (N.Y.); (M.M.); (H.Y.)
| | - Hideo Yokota
- Image Processing Research Team, RIKEN Center for Advanced Photonics, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; (N.Y.); (M.M.); (H.Y.)
| | - Yuko Mimori-Kiyosue
- Laboratory for Molecular and Cellular Dynamics, RIKEN Center for Biosystems Dynamics Research (BDR), 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
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Mirzaei S, Eisvand F, Hadizadeh F, Mosaffa F, Ghasemi A, Ghodsi R. Design, synthesis and biological evaluation of novel 5,6,7-trimethoxy-N-aryl-2-styrylquinolin-4-amines as potential anticancer agents and tubulin polymerization inhibitors. Bioorg Chem 2020; 98:103711. [PMID: 32179282 DOI: 10.1016/j.bioorg.2020.103711] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/25/2020] [Accepted: 02/27/2020] [Indexed: 01/17/2023]
Abstract
A new series of styrylquinolines was designed and synthesized as anticancer agents and tubulin polymerization inhibitors. The in vitro anticancer activity of the synthesized quinolines was evaluated against four human cancer cell lines including A-2780 (human ovarian carcinoma), A-2780/RCIS (cisplatin resistant human ovarian carcinoma), MCF-7 (human breast cancer cells), MCF-7/MX (mitoxantrone resistant human breast cancer cells) and normal Huvec cells. Generally, among the forty-eight newly synthesized quinolines, compounds possessing N-trimethoxy phenyl showed stronger cytotoxic activity with IC50 values ranging from 0.38 to 5.01 μM against all four cancer cell lines. Compounds 9VII-c and 9IV-c showed significant cytotoxic activity on A-2780 cancer cells, stronger than the other compounds and comparable to reference drug CA-4. Compound 9IV-c possessing 3,4-dimethoxystyryl and N-trimethoxy phenyl groups demonstrated potent cytotoxic effects with IC50 values ranging from 0.5 to 1.66 µM on resistant cancer cells as well as their parental cells. Annexin V binding staining assay in A-2780 and MCF-7/MX cancer cells, revealed that compound 9IV-c induced early and late apoptosis. Compounds 9IV-c and 9VII-b, inhibited tubulin polymerization similar to CA4. Finally, molecular docking studies of 9IV-c and 9VII-b into the colchicine-binding site of tubulin displayed the possible interactions of these compounds with tubulin.
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Affiliation(s)
- Salimeh Mirzaei
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farhad Eisvand
- Department of Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farzin Hadizadeh
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Mosaffa
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Ghasemi
- Department of Pediatric Oncology-Hematology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Razieh Ghodsi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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36
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Investigation of the Electrical Properties of Microtubule Ensembles under Cell-Like Conditions. NANOMATERIALS 2020; 10:nano10020265. [PMID: 32033331 PMCID: PMC7075204 DOI: 10.3390/nano10020265] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/28/2020] [Accepted: 01/29/2020] [Indexed: 01/01/2023]
Abstract
Microtubules are hollow cylindrical polymers composed of the highly negatively-charged (~23e), high dipole moment (1750 D) protein α, β- tubulin. While the roles of microtubules in chromosomal segregation, macromolecular transport, and cell migration are relatively well-understood, studies on the electrical properties of microtubules have only recently gained strong interest. Here, we show that while microtubules at physiological concentrations increase solution capacitance, free tubulin has no appreciable effect. Further, we observed a decrease in electrical resistance of solution, with charge transport peaking between 20-60 Hz in the presence of microtubules, consistent with recent findings that microtubules exhibit electric oscillations at such low frequencies. We were able to quantify the capacitance and resistance of the microtubules (MT) network at physiological tubulin concentrations to be 1.27 × 10-5 F and 9.74 × 104 Ω. Our results show that in addition to macromolecular transport, microtubules also act as charge storage devices through counterionic condensation across a broad frequency spectrum. We conclude with a hypothesis of an electrically tunable cytoskeleton where the dielectric properties of tubulin are polymerisation-state dependent.
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37
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Gwon D, Hong J, Jang CY. c-Cbl Acts as an E3 Ligase Against DDA3 for Spindle Dynamics and Centriole Duplication during Mitosis. Mol Cells 2019; 42:840-849. [PMID: 31722512 PMCID: PMC6939656 DOI: 10.14348/molcells.2019.0142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/25/2019] [Accepted: 09/30/2019] [Indexed: 11/29/2022] Open
Abstract
The spatiotemporal mitotic processes are controlled qualitatively by phosphorylation and qualitatively by ubiquitination. Although the SKP1-CUL1-F-box protein (SCF) complex and the anaphase-promoting complex/cyclosome (APC/C) mainly mediate ubiquitin-dependent proteolysis of mitotic regulators, the E3 ligase for a large portion of mitotic proteins has yet to be identified. Here, we report c-Cbl as an E3 ligase that degrades DDA3, a protein involved in spindle dynamics. Depletion of c-Cbl led to increased DDA3 protein levels, resulting in increased recruitment of Kif2a to the mitotic spindle, a concomitant reduction in spindle formation, and chromosome alignment defects. Furthermore, c-Cbl depletion induced centrosome over-duplication and centriole amplification. Therefore, we concluded that c-Cbl controls spindle dynamics and centriole duplication through its E3 ligase activity against DDA3.
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Affiliation(s)
- Dasom Gwon
- Drug Information Research Institute, College of Pharmacy, Sookmyung Women’s University, Seoul 04310,
Korea
| | - Jihee Hong
- Drug Information Research Institute, College of Pharmacy, Sookmyung Women’s University, Seoul 04310,
Korea
| | - Chang-Young Jang
- Drug Information Research Institute, College of Pharmacy, Sookmyung Women’s University, Seoul 04310,
Korea
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38
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Lin Z, Gasic I, Chandrasekaran V, Peters N, Shao S, Mitchison TJ, Hegde RS. TTC5 mediates autoregulation of tubulin via mRNA degradation. Science 2019; 367:100-104. [PMID: 31727855 DOI: 10.1126/science.aaz4352] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 10/31/2019] [Indexed: 12/14/2022]
Abstract
Tubulins play crucial roles in cell division, intracellular traffic, and cell shape. Tubulin concentration is autoregulated by feedback control of messenger RNA (mRNA) degradation via an unknown mechanism. We identified tetratricopeptide protein 5 (TTC5) as a tubulin-specific ribosome-associating factor that triggers cotranslational degradation of tubulin mRNAs in response to excess soluble tubulin. Structural analysis revealed that TTC5 binds near the ribosome exit tunnel and engages the amino terminus of nascent tubulins. TTC5 mutants incapable of ribosome or nascent tubulin interaction abolished tubulin autoregulation and showed chromosome segregation defects during mitosis. Our findings show how a subset of mRNAs can be targeted for coordinated degradation by a specificity factor that recognizes the nascent polypeptides they encode.
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Affiliation(s)
- Zhewang Lin
- MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK
| | - Ivana Gasic
- Department of Systems Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA
| | | | - Niklas Peters
- MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK
| | - Sichen Shao
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Timothy J Mitchison
- Department of Systems Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA
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Kim S, Gwon D, Kim JA, Choi H, Jang CY. Bisphenol A disrupts mitotic progression via disturbing spindle attachment to kinetochore and centriole duplication in cancer cell lines. Toxicol In Vitro 2019; 59:115-125. [DOI: 10.1016/j.tiv.2019.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/09/2019] [Accepted: 04/09/2019] [Indexed: 10/27/2022]
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40
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Azimi F, Ghasemi JB, Saghaei L, Hassanzadeh F, Mahdavi M, Sadeghi-Aliabadi H, Scotti MT, Scotti L. Identification of Essential 2D and 3D Chemical Features for Discovery of the Novel Tubulin Polymerization Inhibitors. Curr Top Med Chem 2019; 19:1092-1120. [DOI: 10.2174/1568026619666190520083655] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/12/2019] [Accepted: 04/02/2019] [Indexed: 12/21/2022]
Abstract
Background:
Tubulin polymerization inhibitors interfere with microtubule assembly and
their functions lead to mitotic arrest, therefore they are attractive target for design and development of
novel anticancer compounds.
Objective:
The proposed novel and effective structures following the use of three-dimensionalquantitative
structure activity relationship (3D-QSAR) pharmacophore based virtual screening clearly
demonstrate the high efficiency of this method in modern drug discovery.
Method:
Combined computational approach was applied to extract the essential 2D and 3D features
requirements for higher activity as well as identify new anti-tubulin agents.
Results:
The best quantitative pharmacophore model, Hypo1, exhibited good correlation of 0.943
(RMSD=1.019) and excellent predictive power in the training set compounds. Generated model
AHHHR, was well mapped to colchicine site and three-dimensional spatial arrangement of their features
were in good agreement with the vital interactions in the active site. Total prediction accuracy
(0.92 for training set and 0.86 for test set), enrichment factor (4.2 for training set and 4.5 for test set)
and the area under the ROC curve (0.86 for training set and 0.94 for the test set), the developed model
using Extended Class FingerPrints of maximum diameter 4 (ECFP_4) was chosen as the best model.
Conclusion:
Developed computational platform provided a better understanding of requirement features
for colchicine site inhibitors and we believe the results of this study might be useful for the rational
design and optimization of new inhibitors.
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Affiliation(s)
- Fateme Azimi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jahan B. Ghasemi
- Department of Chemistry, Faculty of Sciences, University of Tehran, Tehran, Iran
| | - Lotfollah Saghaei
- Department of Medicinal Chemistry, Faculty of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farshid Hassanzadeh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Hojjat Sadeghi-Aliabadi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Marcus T. Scotti
- Federal University of Paraiba, Health Sciences Center, Campus I, Joao Pessoa, PB, Brazil
| | - Luciana Scotti
- Federal University of Paraiba, Health Sciences Center, Campus I, Joao Pessoa, PB, Brazil
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Li T, Li Y, Gan Y, Tian R, Wu Q, Shu G, Yin G. Methylation-mediated repression of MiR-424/503 cluster promotes proliferation and migration of ovarian cancer cells through targeting the hub gene KIF23. Cell Cycle 2019; 18:1601-1618. [PMID: 31135262 PMCID: PMC6619937 DOI: 10.1080/15384101.2019.1624112] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 12/24/2022] Open
Abstract
Ovarian cancer is one type of gynecological malignancies with extremely high lethal rate. Abnormal proliferation and metastasis are regarded to play important roles in patients' death, whereas we know little about the underlying molecular mechanisms. Under this circumstance, our current study aims to investigate the role of hub genes in ovarian cancer. Bioinformatics analysis of the data from GEO and analyses of ovarian cancer samples were performed. Then, the results showed that KIF23, a hub gene, was mainly related to cell cycle and positively associated with poor prognosis. Meanwhile, both miR-424-5p and miR-503-5p directly targeted to 3'UTR of KIF23 to suppress the expression of KIF23 and inhibit ovarian cancer cell proliferation and migration. Furthermore, we discovered that miR-424/503 was epigenetically repressed by hypermethylation in the promoter regions, which directly modulated the expression of KIF23 to improve the oncogenic performance of cancer cells in vitro. Together, our research certifies that miR-424/503 cluster is silenced by DNA hypermethylation, which promotes the expression of KIF23, thereby regulating the proliferation and migration of ovarian cancer cells. Interposing this process might be a novel approach in cancer therapy.
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Affiliation(s)
- Tong Li
- Department of Pathology, Xiangya Hospital, School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China
| | - Yimin Li
- Department of Pathology, Xiangya Hospital, School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China
| | - Yaqi Gan
- Department of Pathology, Xiangya Hospital, School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China
| | - Ruotong Tian
- School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China
| | - Qihan Wu
- NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Medical School, Fudan University, Shanghai, China
| | - Guang Shu
- School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China
| | - Gang Yin
- Department of Pathology, Xiangya Hospital, School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China
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Arnst KE, Wang Y, Lei ZN, Hwang DJ, Kumar G, Ma D, Parke DN, Chen Q, Yang J, White SW, Seagroves TN, Chen ZS, Miller DD, Li W. Colchicine Binding Site Agent DJ95 Overcomes Drug Resistance and Exhibits Antitumor Efficacy. Mol Pharmacol 2019; 96:73-89. [PMID: 31043459 PMCID: PMC6553560 DOI: 10.1124/mol.118.114801] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 04/21/2019] [Indexed: 02/05/2023] Open
Abstract
Interfering with microtubule dynamics is a well-established strategy in cancer treatment; however, many microtubule-targeting agents are associated with drug resistance and adverse effects. Substantial evidence points to ATP-binding cassette (ABC) transporters as critical players in the development of resistance. Herein, we demonstrate the efficacy of DJ95 (2-(1H-indol-6-yl)-4-(3,4,5-trimethoxyphenyl)-1H-imidazo[4,5-c]pyridine), a novel tubulin inhibitor, in a variety of cancer cell lines, including malignant melanomas, drug-selected resistant cell lines, specific ABC transporter-overexpressing cell lines, and the National Cancer Institute 60 cell line panel. DJ95 treatment inhibited cancer cell migration, caused morphologic changes to the microtubule network foundation, and severely disrupted mitotic spindle formation of mitotic cells. The high-resolution crystal structure of DJ95 in complex with tubulin protein and the detailed molecular interactions confirmed its direct binding to the colchicine site. In vitro pharmacological screening of DJ95 using SafetyScreen44 (Eurofins Cerep-Panlabs) revealed no significant off-target interactions, and pharmacokinetic analysis showed that DJ95 was maintained at therapeutically relevant plasma concentrations for up to 24 hours in mice. In an A375 xenograft model in nude mice, DJ95 inhibited tumor growth and disrupted tumor vasculature in xenograft tumors. These results demonstrate that DJ95 is potent against a variety of cell lines, demonstrated greater potency to ABC transporter-overexpressing cell lines than existing tubulin inhibitors, directly targets the colchicine binding domain, exhibits significant antitumor efficacy, and demonstrates vascular-disrupting properties. Collectively, these data suggest that DJ95 has great potential as a cancer therapeutic, particularly for multidrug resistance phenotypes, and warrants further development. SIGNIFICANCE STATEMENT: Paclitaxel is a widely used tubulin inhibitor for cancer therapy, but its clinical efficacy is often limited by the development of multidrug resistance. In this study, we reported the preclinical characterization of a new tubulin inhibitor DJ95, and demonstrated its abilities to overcome paclitaxel resistance, disrupt tumor vasculature, and exhibit significant antitumor efficacy.
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Affiliation(s)
- Kinsie E Arnst
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Yuxi Wang
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Zi-Ning Lei
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Dong-Jin Hwang
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Gyanendra Kumar
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Dejian Ma
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Deanna N Parke
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Qiang Chen
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Jinliang Yang
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Stephen W White
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Tiffany N Seagroves
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Duane D Miller
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
| | - Wei Li
- Department of Pharmaceutical Sciences, College of Pharmacy (K.E.A., D.-J.H., D.M., D.D.M., W.L.), and Department of Pathology (D.N.P., T.N.S.), the University of Tennessee Health Science Center, Memphis, Tennessee; State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center of Biotherapy (Y.W., Q.C., J.Y.), and Department of Respiratory Medicine (Y.W.), West China Hospital, Sichuan University, Chengdu, China; Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York (Z.-N.L., Z.-S.C.); and Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee (G.K., S.W.W.)
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Zhang X, Hooykaas PJJ. The Agrobacterium VirD5 protein hyperactivates the mitotic Aurora kinase in host cells. THE NEW PHYTOLOGIST 2019; 222:1551-1560. [PMID: 30667529 PMCID: PMC6667905 DOI: 10.1111/nph.15700] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 01/13/2019] [Indexed: 06/08/2023]
Abstract
Aided by translocated virulence proteins, Agrobacterium tumefaciens transforms plant cells with oncogenic T-DNA. In the host cells the virulence protein VirD5 moves to the nucleus, where it becomes localized at the kinetochores, and disturbs faithful chromosome segregation, but the molecular mechanism underlying this remains unknown. To gain more insight, we screened amongst the kinetochore proteins for VirD5 interactors using bimolecular fluorescence complementation assays, and tested chromosome segregation in yeast cells. We found that VirD5 interacts with the conserved mitotic Aurora kinase Ipl1 in yeast and likewise with plant Aurora kinases. In vitro VirD5 was found to stimulate the activity of Ipl1. Phosphorylation of substrates by Ipl1 in vivo is known to result in the detachment between kinetochore and spindle microtubule. This is necessary for error correction, but increased Ipl1/Aurora kinase activity is known to cause spindle instability, explaining enhanced chromosome mis-segregation seen in the presence of VirD5. That activation of the Ipl1/Aurora kinase at least partially underlies the toxicity of VirD5 became apparent by artificial boosting the activity of the specific counteracting phosphatase Glc7 in vivo, which relieved the toxicity. These findings reveal a novel mechanism by which a pathogenic bacterium manipulates host cells.
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Affiliation(s)
- Xiaorong Zhang
- Department of Molecular and Developmental GeneticsInstitute of BiologyLeiden UniversitySylviusweg 72Leiden2333BEthe Netherlands
| | - Paul J. J. Hooykaas
- Department of Molecular and Developmental GeneticsInstitute of BiologyLeiden UniversitySylviusweg 72Leiden2333BEthe Netherlands
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Pavlova GA, Razuvaeva AV, Popova JV, Andreyeva EN, Yarinich LA, Lebedev MO, Pellacani C, Bonaccorsi S, Somma MP, Gatti M, Pindyurin AV. The role of Patronin in Drosophila mitosis. BMC Mol Cell Biol 2019; 20:7. [PMID: 31284878 PMCID: PMC6469034 DOI: 10.1186/s12860-019-0189-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Background The calmodulin-regulated spectrin-associated proteins (CAMSAPs) belong to a conserved protein family, which includes members that bind the polymerizing mcrotubule (MT) minus ends and remain associated with the MT lattice formed by minus end polymerization. Only one of the three mammalian CAMSAPs, CAMSAP1, localizes to the mitotic spindle but its function is unclear. In Drosophila, there is only one CAMSAP, named Patronin. Previous work has shown that Patronin stabilizes the minus ends of non-mitotic MTs and is required for proper spindle elongation. However, the precise role of Patronin in mitotic spindle assembly is poorly understood. Results Here we have explored the role of Patronin in Drosophila mitosis using S2 tissue culture cells as a model system. We show that Patronin associates with different types of MT bundles within the Drosophila mitotic spindle, and that it is required for their stability. Imaging of living cells expressing Patronin-GFP showed that Patronin displays a dynamic behavior. In prometaphase cells, Patronin accumulates on short segments of MT bundles located near the chromosomes. These Patronin “seeds” extend towards the cell poles and stop growing just before reaching the poles. Our data also suggest that Patronin localization is largely independent of proteins acting at the MT minus ends such as Asp and Klp10A. Conclusion Our results suggest a working hypothesis about the mitotic role of Patronin. We propose that Patronin binds the minus ends within MT bundles, including those generated from the walls of preexisting MTs via the augmin-mediated pathway. This would help maintaining MT association within the mitotic bundles, thereby stabilizing the spindle structure. Our data also raise the intriguing possibility that the minus ends of bundled MTs can undergo a limited polymerization. Electronic supplementary material The online version of this article (10.1186/s12860-019-0189-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Gera A Pavlova
- Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Alyona V Razuvaeva
- Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia.,Novosibirsk State University, Novosibirsk, 630090, Russia
| | - Julia V Popova
- Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Evgeniya N Andreyeva
- Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Lyubov A Yarinich
- Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia.,Novosibirsk State University, Novosibirsk, 630090, Russia
| | - Mikhail O Lebedev
- Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia.,Novosibirsk State University, Novosibirsk, 630090, Russia
| | - Claudia Pellacani
- IBPM CNR and Department of Biology and Biotechnology, Sapienza University of Rome, 00185, Rome, Italy
| | - Silvia Bonaccorsi
- IBPM CNR and Department of Biology and Biotechnology, Sapienza University of Rome, 00185, Rome, Italy
| | - Maria Patrizia Somma
- IBPM CNR and Department of Biology and Biotechnology, Sapienza University of Rome, 00185, Rome, Italy
| | - Maurizio Gatti
- Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia. .,IBPM CNR and Department of Biology and Biotechnology, Sapienza University of Rome, 00185, Rome, Italy.
| | - Alexey V Pindyurin
- Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia. .,Novosibirsk State University, Novosibirsk, 630090, Russia.
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45
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Grueb SS, Muhs S, Popp Y, Schmitt S, Geyer M, Lin YN, Windhorst S. The formin Drosophila homologue of Diaphanous2 (Diaph2) controls microtubule dynamics in colorectal cancer cells independent of its FH2-domain. Sci Rep 2019; 9:5352. [PMID: 30926831 PMCID: PMC6441084 DOI: 10.1038/s41598-019-41731-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 03/12/2019] [Indexed: 12/21/2022] Open
Abstract
In this study, we analyzed the functional role of the formin Drosophila Homologue of Diaphanous2 (Diaph2) in colorectal cancer cells. We show that stable down-regulation of Diaph2 expression in HT29 cells decreased chromosome alignment and the velocity of chromosome movement during M-phase, thus reducing the proliferation rate and colony formation. In interphase cells, Diaph2 was diffusely distributed in the cytosol, while in metaphase cells the protein was located to spindle microtubules (MTs). Diaph2-depletion increased the concentration of stable spindle MTs, showing that the formin is required to control spindle MT-dynamics. Our cellular data indicate that Diaph2-controls spindle MT-dynamics independent of Cdc42 activity and our in vitro results reveal that bacterially produced full-length (FL) Diaph2 strongly altered MT-dynamics in absence of Cdc42, where its actin-nucleating activity is auto-inhibited. FL-Diaph2 mediates a 10-fold increase in MT-polymerization compared to the Diaph2-FH2-domain. Interestingly, a Diaph2-mutant lacking the FH2-domain (ΔFH2) increased MT-polymerization to a similar extent as the FH2-domain, indicating the existence of a second MT-binding domain. However, in contrast to FL-Diaph2 and the FH2-domain, ΔFH2 did not alter the density of taxol-stabilized MTs. Thus, the FH2-domain and the second Diaph2-binding domain appear to control MT-dynamics by different mechanisms. In summary, our data indicate that Diaph2 controls M-phase progression under basal conditions by regulating spindle MT-dynamics. In addition, a region outside of the canonical MT-regulating FH2-domain is involved in Diaph2-mediated control of MT-dynamics.
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Affiliation(s)
- Saskia S Grueb
- Department of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf Martinistrasse 52, D-20246, Hamburg, Germany
| | - Stefanie Muhs
- Department of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf Martinistrasse 52, D-20246, Hamburg, Germany
| | - Yannes Popp
- Department of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf Martinistrasse 52, D-20246, Hamburg, Germany
| | - Sebastian Schmitt
- Institute of Structural Biology, University of Bonn, Sigmund-Freud-Str. 25, D-53127, Bonn, Germany
| | - Matthias Geyer
- Institute of Structural Biology, University of Bonn, Sigmund-Freud-Str. 25, D-53127, Bonn, Germany
| | - Yuan-Na Lin
- Department of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf Martinistrasse 52, D-20246, Hamburg, Germany
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf Martinistrasse 52, 52 D-20246, Hamburg, Germany
| | - Sabine Windhorst
- Department of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf Martinistrasse 52, D-20246, Hamburg, Germany.
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46
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Li Z, Zhang Y, Zhang Z, Zhao Z, Lv Q. A four‐gene signature predicts the efficacy of paclitaxel‐based neoadjuvant therapy in human epidermal growth factor receptor 2–negative breast cancer. J Cell Biochem 2018; 120:6046-6056. [PMID: 30520096 DOI: 10.1002/jcb.27891] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 09/19/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Zhi Li
- Department of Medical Oncology The First Hospital of China Medical University Shenyang China
- Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province The First Hospital of China Medical University Shenyang China
| | - Ye Zhang
- Department of Medical Oncology The First Hospital of China Medical University Shenyang China
- Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province The First Hospital of China Medical University Shenyang China
| | - Zhe Zhang
- Department of Pathology Shengjing Hospital of China Medical University Shenyang China
| | - Zhenkun Zhao
- Department of Pathology Shengjing Hospital of China Medical University Shenyang China
| | - Qingjie Lv
- Department of Pathology Shengjing Hospital of China Medical University Shenyang China
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47
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Yang F, He CP, Diao PC, Hong KH, Rao JJ, Zhao PL. Discovery and optimization of 3,4,5-trimethoxyphenyl substituted triazolylthioacetamides as potent tubulin polymerization inhibitors. Bioorg Med Chem Lett 2018; 29:22-27. [PMID: 30448234 DOI: 10.1016/j.bmcl.2018.11.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 11/05/2018] [Accepted: 11/12/2018] [Indexed: 12/17/2022]
Abstract
Based on our previous research, three series of new triazolylthioacetamides possessing 3,4,5-trimethoxyphenyl moiety were synthesized, and evaluated for antiproliferative activities and inhibition of tubulin polymerization. The most promising compounds 8b and 8j demonstrated more significant antiproliferative activities against MCF-7, HeLa, and HT-29 cell lines than our lead compound 6. Moreover, analogues 8f, 8j, and 8o manifested more potent antiproliferative activities against HeLa cell line with IC50 values of 0.04, 0.05 and 0.16 μM, respectively, representing 100-, 82-, and 25-fold improvements of the activity compared to compound 6. Furthermore, the representative compound, 8j, was found to induce significant cell cycle arrest at the G2/M phase in HeLa cell lines via a concentration-dependent manner. Meanwhile, compound 8b exhibited the most potent tubulin polymerization inhibitory activity with an IC50 value of 5.9 μM, which was almost as active as that of CA-4 (IC50 = 4.2 μM). Additionally, molecular docking analysis suggested that 8b formed stable interactions in the colchicine-binding site of tubulin.
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Affiliation(s)
- Fang Yang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, PR China
| | - Cai-Ping He
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, PR China
| | - Peng-Cheng Diao
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, PR China
| | - Kwon Ho Hong
- Department of Medicinal Chemistry and Institute for Therapeutics Discovery and Development, College of Pharmacy, University of Minnesota, Minneapolis 55414, United States
| | - Jin-Jun Rao
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, PR China.
| | - Pei-Liang Zhao
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, PR China.
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48
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Prasad B, Lakshma Nayak V, Srikanth PS, Baig MF, Subba Reddy NV, Babu KS, Kamal A. Synthesis and biological evaluation of 1-benzyl-N-(2-(phenylamino)pyridin-3-yl)-1H-1,2,3-triazole-4-carboxamides as antimitotic agents. Bioorg Chem 2018; 83:535-548. [PMID: 30472555 DOI: 10.1016/j.bioorg.2018.11.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/31/2018] [Accepted: 11/01/2018] [Indexed: 01/11/2023]
Abstract
A library of 1-benzyl-N-(2-(phenylamino)pyridin-3-yl)-1H-1,2,3-triazole-4-carboxamides (7a-al) have been designed, synthesized and screened for their anti-proliferative activity against some selected human cancer cell lines namely DU-145, A-549, MCF-7 and HeLa. Most of them have shown promising cytotoxicity against lung cancer cell line (A549), amongst them 7f was found to be the most potent anti-proliferative congener. Furthermore, 7f exhibited comparable tubulin polymerization inhibition (IC50 value 2.04 µM) to the standard E7010 (IC50 value 2.15 µM). Moreover, flow cytometric analysis revealed that this compound induced apoptosis via cell cycle arrest at G2/M phase in A549 cells. Induction of apoptosis was further observed by examining the mitochondrial membrane potential and was also confirmed by Hoechst staining as well as Annexin V-FITC assays. Furthermore, molecular docking studies indicated that compound 7f binds to the colchicine binding site of the β-tubulin. Thus, 7f exhibits anti-proliferative properties by inhibiting the tubulin polymerization through the binding at the colchicine active site and by induction of apoptosis.
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Affiliation(s)
- Budaganaboyina Prasad
- Medicinal Chemistry and Biotechnology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India; Department of Chemistry, Osmania University, Hyderabad 500007, Telangana, India
| | - V Lakshma Nayak
- Medicinal Chemistry and Biotechnology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - P S Srikanth
- Medicinal Chemistry and Biotechnology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Mirza Feroz Baig
- Medicinal Chemistry and Biotechnology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - N V Subba Reddy
- Medicinal Chemistry and Biotechnology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Korrapati Suresh Babu
- Medicinal Chemistry and Biotechnology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India; Department of Chemistry, Osmania University, Hyderabad 500007, Telangana, India
| | - Ahmed Kamal
- Medicinal Chemistry and Biotechnology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India; School of Pharmaceutical Education and Research (SPER), Jamia Hamdard, 110 062 New Delhi, India.
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49
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Lee JK, Ha GH, Kim HS, Lee CW. Oncogenic potential of BEX4 is conferred by Polo-like kinase 1-mediated phosphorylation. Exp Mol Med 2018; 50:1-12. [PMID: 30367032 PMCID: PMC6203768 DOI: 10.1038/s12276-018-0168-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 07/06/2018] [Accepted: 07/12/2018] [Indexed: 02/07/2023] Open
Abstract
The brain-expressed X-linked 4 (BEX4) gene has been recently identified as a mediator of microtubule hyperacetylation through sirtuin 2 inhibition and is highly overexpressed in human cancers. However, the gain-of-function molecular mechanism of the BEX4 gene in human cancers still needs to be elucidated. This study shows that BEX4 colocalizes and interacts with Polo-like kinase 1 (PLK1) at centrosomes, spindle poles, and midbodies, particularly during mitosis. Interestingly, PLK1-mediated phosphorylation upregulates the stability of BEX4 protein, and the PLK1-BEX4 interaction allows abnormal mitotic cells to adapt to aneuploidy rather than undergo apoptotic cell death. In summary, these results suggest that the oncogenicity of BEX4 is conferred by PLK1-mediated phosphorylation, and thus, the BEX4-PLK1 interaction is a novel oncogenic signal that enables the acquisition of chromosomal aneuploidy.
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Affiliation(s)
- Jin-Kwan Lee
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, 06351, Republic of Korea
| | - Geun-Hyoung Ha
- Department of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea.
| | - Hyun-Soo Kim
- Department of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Chang-Woo Lee
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, 06351, Republic of Korea.
- Department of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea.
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50
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Chen J, Goggin D, Han H, Busi R, Yu Q, Powles S. Enhanced Trifluralin Metabolism Can Confer Resistance in Lolium rigidum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7589-7596. [PMID: 29965748 DOI: 10.1021/acs.jafc.8b02283] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Resistance to the pre-emergence herbicide trifluralin is increasing in Australian annual ryegrass ( Lolium rigidum) populations. Three L. rigidum populations (R1, R2, and R3) collected from Australian grain fields were identified with trifluralin resistance. Both target-site and nontarget-site resistance mechanisms were investigated. No target-site α-tubulin mutations were detected in populations R1 and R3, while an Arg-243-Lys mutation was found in R2. Compared with the three trifluralin-susceptible populations, enhanced [14C]-trifluralin metabolism, quantified by measuring the amount of [14C] label partitioning into the polar phase of a hexane:methanol system, was identified in all the three resistant populations. This is the first report of metabolic resistance to trifluralin. Coevolution of target-site and nontarget-site resistance to trifluralin is occurring, and metabolic resistance is not rare in L. rigidum populations in Australia. A method was established for trifluralin metabolic resistance detection, overcoming the difficulties of quantifying this highly volatile herbicide by chromatographic methods.
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Affiliation(s)
- Jinyi Chen
- Australian Herbicide Resistance Initiative, School of Agriculture & Environment , University of Western Australia , Crawley , Western Australia 6009 , Australia
| | - Danica Goggin
- Australian Herbicide Resistance Initiative, School of Agriculture & Environment , University of Western Australia , Crawley , Western Australia 6009 , Australia
| | - Heping Han
- Australian Herbicide Resistance Initiative, School of Agriculture & Environment , University of Western Australia , Crawley , Western Australia 6009 , Australia
| | - Roberto Busi
- Australian Herbicide Resistance Initiative, School of Agriculture & Environment , University of Western Australia , Crawley , Western Australia 6009 , Australia
| | - Qin Yu
- Australian Herbicide Resistance Initiative, School of Agriculture & Environment , University of Western Australia , Crawley , Western Australia 6009 , Australia
| | - Stephen Powles
- Australian Herbicide Resistance Initiative, School of Agriculture & Environment , University of Western Australia , Crawley , Western Australia 6009 , Australia
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