1
|
Deng X, Seguinot BO, Bradshaw G, Lee JS, Coy S, Kalocsay M, Santagata S, Mitchison T. STMND1 is a phylogenetically ancient stathmin which localizes to motile cilia and exhibits nuclear translocation that is inhibited when soluble tubulin concentration increases. Mol Biol Cell 2024; 35:ar82. [PMID: 38630521 DOI: 10.1091/mbc.e23-12-0514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024] Open
Abstract
Stathmins are small, unstructured proteins that bind tubulin dimers and are implicated in several human diseases, but whose function remains unknown. We characterized a new stathmin, STMND1 (Stathmin Domain Containing 1) as the human representative of an ancient subfamily. STMND1 features a N-terminal myristoylated and palmitoylated motif which directs it to membranes and a tubulin-binding stathmin-like domain (SLD) that contains an internal nuclear localization signal. Biochemistry and proximity labeling showed that STMND1 binds tubulin, and live imaging showed that tubulin binding inhibits translocation from cellular membranes to the nucleus. STMND1 is highly expressed in multiciliated epithelial cells, where it localizes to motile cilia. Overexpression in a model system increased the length of primary cilia. Our study suggests that the most ancient stathmins have cilium-related functions that involve sensing soluble tubulin.
Collapse
Affiliation(s)
- Xiang Deng
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115
| | - Bryan O Seguinot
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115
| | - Gary Bradshaw
- Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA 02115
| | - Jong Suk Lee
- Ludwig Center at Harvard, Harvard Medical School, Boston, MA 02115
- Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA 02115
- Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115
| | - Shannon Coy
- Ludwig Center at Harvard, Harvard Medical School, Boston, MA 02115
- Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA 02115
- Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115
| | - Marian Kalocsay
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030
| | - Sandro Santagata
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115
- Ludwig Center at Harvard, Harvard Medical School, Boston, MA 02115
- Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA 02115
- Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115
| | - Timothy Mitchison
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115
| |
Collapse
|
2
|
Adrian M, Weber M, Tsai MC, Glock C, Kahn OI, Phu L, Cheung TK, Meilandt WJ, Rose CM, Hoogenraad CC. Polarized microtubule remodeling transforms the morphology of reactive microglia and drives cytokine release. Nat Commun 2023; 14:6322. [PMID: 37813836 PMCID: PMC10562429 DOI: 10.1038/s41467-023-41891-6] [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: 11/03/2022] [Accepted: 09/19/2023] [Indexed: 10/11/2023] Open
Abstract
Microglial reactivity is a pathological hallmark in many neurodegenerative diseases. During stimulation, microglia undergo complex morphological changes, including loss of their characteristic ramified morphology, which is routinely used to detect and quantify inflammation in the brain. However, the underlying molecular mechanisms and the relation between microglial morphology and their pathophysiological function are unknown. Here, proteomic profiling of lipopolysaccharide (LPS)-reactive microglia identifies microtubule remodeling pathways as an early factor that drives the morphological change and subsequently controls cytokine responses. We find that LPS-reactive microglia reorganize their microtubules to form a stable and centrosomally-anchored array to facilitate efficient cytokine trafficking and release. We identify cyclin-dependent kinase 1 (Cdk-1) as a critical upstream regulator of microtubule remodeling and morphological change in-vitro and in-situ. Cdk-1 inhibition also rescues tau and amyloid fibril-induced morphology changes. These results demonstrate a critical role for microtubule dynamics and reorganization in microglial reactivity and modulating cytokine-mediated inflammatory responses.
Collapse
Affiliation(s)
- Max Adrian
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
- Department of Pathology, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Martin Weber
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Ming-Chi Tsai
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Caspar Glock
- Department of OMNI Bioinformatics, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Olga I Kahn
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Lilian Phu
- Department of Microchemistry, Proteomics and Lipidomics, South San Francisco, CA, 94080, USA
| | - Tommy K Cheung
- Department of Microchemistry, Proteomics and Lipidomics, South San Francisco, CA, 94080, USA
| | - William J Meilandt
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Christopher M Rose
- Department of Microchemistry, Proteomics and Lipidomics, South San Francisco, CA, 94080, USA
| | - Casper C Hoogenraad
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA.
| |
Collapse
|
3
|
da Silva FA, Rodrigues-Ribeiro L, Melo-Braga MN, Passos-Silva DG, Sampaio WO, Gorshkov V, Kjeldsen F, Verano-Braga T, Santos RAS. Phosphoproteomic studies of alamandine signaling in CHO-MrgD and human pancreatic carcinoma cells: An antiproliferative effect is unveiled. Proteomics 2022; 22:e2100255. [PMID: 35652611 DOI: 10.1002/pmic.202100255] [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: 10/12/2021] [Revised: 04/16/2022] [Accepted: 05/30/2022] [Indexed: 11/06/2022]
Abstract
Alamandine is a heptapeptide from the renin-angiotensin system (RAS) with similar structure/function to angiotensin-(1-7) [ang-(1-7)], but they act via different receptors. It remains elusive whether alamandine is an antiproliferative agent like ang-(1-7). The goal of this study was to evaluate the potential antiproliferative activity of alamandine and the underlying cellular signaling. We evaluated alamandine effect in the tumoral cell lines Mia PaCa-2 and A549, and in the nontumoral cell lines HaCaT, CHO and CHO transfected with the alamandine receptor MrgD (CHO-MrgD). Alamandine was able to reduce the proliferation of the tumoral cell lines in a MrgD-dependent fashion. We did not observe any effect in the nontumoral cell lines tested. We also performed proteomics and phosphoproteomics to study the alamandine signaling in Mia PaCa-2 and CHO-MrgD. Data suggest that alamandine induces a shift from anaerobic to aerobic metabolism in the tumoral cells, induces a negative regulation of PI3K/AKT/mTOR pathway and activates the transcriptional factor FoxO1; events that could explain, at least partially, the observed antiproliferative effect of alamandine. This study provides for the first time a comprehensive investigation of the alamandine signaling in tumoral (Mia PaCa-2) and nontumoral (CHO-MrgD) cells, highlighting the antiproliferative activity of alamandine/MrgD and its possible antitumoral effect.
Collapse
Affiliation(s)
- Filipe Alex da Silva
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- National Institute of Science and Technology in Nanobiopharmaceutics, Belo Horizonte, Minas Gerais, Brazil
| | - Lucas Rodrigues-Ribeiro
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- National Institute of Science and Technology in Nanobiopharmaceutics, Belo Horizonte, Minas Gerais, Brazil
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marcella Nunes Melo-Braga
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- National Institute of Science and Technology in Nanobiopharmaceutics, Belo Horizonte, Minas Gerais, Brazil
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Danielle Gomes Passos-Silva
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- National Institute of Science and Technology in Nanobiopharmaceutics, Belo Horizonte, Minas Gerais, Brazil
| | - Walkyria Oliveira Sampaio
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- National Institute of Science and Technology in Nanobiopharmaceutics, Belo Horizonte, Minas Gerais, Brazil
| | - Vladimir Gorshkov
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Syddanmark, Denmark
| | - Frank Kjeldsen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Syddanmark, Denmark
| | - Thiago Verano-Braga
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- National Institute of Science and Technology in Nanobiopharmaceutics, Belo Horizonte, Minas Gerais, Brazil
| | - Robson Augusto Souza Santos
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- National Institute of Science and Technology in Nanobiopharmaceutics, Belo Horizonte, Minas Gerais, Brazil
| |
Collapse
|
4
|
Liu J, Li J, Wang K, Liu H, Sun J, Zhao X, Yu Y, Qiao Y, Wu Y, Zhang X, Zhang R, Yang A. Aberrantly high activation of a FoxM1-STMN1 axis contributes to progression and tumorigenesis in FoxM1-driven cancers. Signal Transduct Target Ther 2021; 6:42. [PMID: 33526768 PMCID: PMC7851151 DOI: 10.1038/s41392-020-00396-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/19/2020] [Accepted: 10/19/2020] [Indexed: 12/13/2022] Open
Abstract
Fork-head box protein M1 (FoxM1) is a transcriptional factor which plays critical roles in cancer development and progression. However, the general regulatory mechanism of FoxM1 is still limited. STMN1 is a microtubule-binding protein which can inhibit the assembly of microtubule dimer or promote depolymerization of microtubules. It was reported as a major responsive factor of paclitaxel resistance for clinical chemotherapy of tumor patients. But the function of abnormally high level of STMN1 and its regulation mechanism in cancer cells remain unclear. In this study, we used public database and tissue microarrays to analyze the expression pattern of FoxM1 and STMN1 and found a strong positive correlation between FoxM1 and STMN1 in multiple types of cancer. Lentivirus-mediated FoxM1/STMN1-knockdown cell lines were established to study the function of FoxM1/STMN1 by performing cell viability assay, plate clone formation assay, soft agar assay in vitro and xenograft mouse model in vivo. Our results showed that FoxM1 promotes cell proliferation by upregulating STMN1. Further ChIP assay showed that FoxM1 upregulates STMN1 in a transcriptional level. Prognostic analysis showed that a high level of FoxM1 and STMN1 is related to poor prognosis in solid tumors. Moreover, a high co-expression of FoxM1 and STMN1 has a more significant correlation with poor prognosis. Our findings suggest that a general FoxM1-STMN1 axis contributes to cell proliferation and tumorigenesis in hepatocellular carcinoma, gastric cancer and colorectal cancer. The combination of FoxM1 and STMN1 can be a more precise biomarker for prognostic prediction.
Collapse
Affiliation(s)
- Jun Liu
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032, Xi'an, Shaanxi, China.,State Key Laboratory of Cancer Biology, Institute of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, 710032, Xi'an, Shaanxi, China
| | - Jipeng Li
- State Key Laboratory of Cancer Biology, Institute of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, 710032, Xi'an, Shaanxi, China. .,Department of Experimental Surgery, Xijing Hospital, Fourth Military Medical University, 710032, Xi'an, Shaanxi, China.
| | - Ke Wang
- State Key Laboratory of Cancer Biology, Institute of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, 710032, Xi'an, Shaanxi, China
| | - Haiming Liu
- School of Software Engineering, Beijing Jiaotong University, 100044, Beijing, China
| | - Jianyong Sun
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, 710038, Xi'an, Shaanxi, China
| | - Xinhui Zhao
- Department of Thyroid and Breast Surgery, Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, 710018, Xi'an, Shaanxi, China
| | - Yanping Yu
- The Second Ward of Gynecological Tumor, Shaanxi Provincial Cancer Hospital, 710061, Xi'an, Shaanxi, China
| | - Yihuan Qiao
- School of Clinical Medicine, Xi'an Medical University, 710021, Xi'an, Shaanxi, China
| | - Ye Wu
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032, Xi'an, Shaanxi, China
| | - Xiaofang Zhang
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032, Xi'an, Shaanxi, China
| | - Rui Zhang
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032, Xi'an, Shaanxi, China. .,State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 710032, Xi'an, Shaanxi, China.
| | - Angang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 710032, Xi'an, Shaanxi, China.
| |
Collapse
|
5
|
Ramlogan-Steel CA, Steel JC, Fathallah H, Iancu-Rubin C, Atweh GF. Stathmin 1 deficiency induces erythro-megakaryocytic defects leading to macrocytic anemia and thrombocythemia in Stathmin 1 knock out mice. Blood Cells Mol Dis 2020; 87:102522. [PMID: 33260083 DOI: 10.1016/j.bcmd.2020.102522] [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: 08/04/2020] [Revised: 10/15/2020] [Accepted: 11/11/2020] [Indexed: 10/22/2022]
Abstract
Stathmin 1 (STMN1) is a cytosolic phosphoprotein that was discovered as a result of its high level of expression in leukemic cells. It plays an important role in the regulation of mitosis by promoting depolymerization of the microtubules that make up the mitotic spindle and, aging has been shown to impair STMN1 levels and change microtubule stability. We have previously demonstrated that a high level of STMN1 expression during early megakaryopoiesis is necessary for proliferation of megakaryocyte progenitors and that down-regulation of STMN1 expression during late megakaryopoiesis is important for megakaryocyte maturation and platelet production. In this report, we examined the effects of STMN1 deficiency on erythroid and megakaryocytic lineages in the mouse. Our studies show that STMN1 deficiency results in mild thrombocytopenia in young animals which converts into profound thrombocythemia as the mice age. STMN1 deficiency also lead to macrocytic changes in both erythrocytes and megakaryocytes that persisted throughout the life of STMN1 knock-out mice. Furthermore, STMN1 knock-out mice displayed a lower number of erythroid and megakaryocytic progenitor cells and had delayed recovery of their blood counts after chemotherapy. These studies show an important role for STMN1 in normal erythro-megakaryopoietic development and suggests potential implications for disorders affecting these hematopoietic lineages.
Collapse
Affiliation(s)
- Charmaine A Ramlogan-Steel
- School of Health, Medical and Applied Science, Central Queensland University, Rockhampton, QLD, Australia.
| | - Jason C Steel
- School of Health, Medical and Applied Science, Central Queensland University, Rockhampton, QLD, Australia
| | - Hassana Fathallah
- Division of Hematology-Oncology, Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Camelia Iancu-Rubin
- Department of Pathology, Molecular and Cell-Based Medicine, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - George F Atweh
- Division of Hematology/Oncology, University of New Mexico Cancer Center, Albuquerque, NM, USA.
| |
Collapse
|
6
|
Bouhaddou M, Memon D, Meyer B, White KM, Rezelj VV, Correa Marrero M, Polacco BJ, Melnyk JE, Ulferts S, Kaake RM, Batra J, Richards AL, Stevenson E, Gordon DE, Rojc A, Obernier K, Fabius JM, Soucheray M, Miorin L, Moreno E, Koh C, Tran QD, Hardy A, Robinot R, Vallet T, Nilsson-Payant BE, Hernandez-Armenta C, Dunham A, Weigang S, Knerr J, Modak M, Quintero D, Zhou Y, Dugourd A, Valdeolivas A, Patil T, Li Q, Hüttenhain R, Cakir M, Muralidharan M, Kim M, Jang G, Tutuncuoglu B, Hiatt J, Guo JZ, Xu J, Bouhaddou S, Mathy CJP, Gaulton A, Manners EJ, Félix E, Shi Y, Goff M, Lim JK, McBride T, O'Neal MC, Cai Y, Chang JCJ, Broadhurst DJ, Klippsten S, De Wit E, Leach AR, Kortemme T, Shoichet B, Ott M, Saez-Rodriguez J, tenOever BR, Mullins RD, Fischer ER, Kochs G, Grosse R, García-Sastre A, Vignuzzi M, Johnson JR, Shokat KM, Swaney DL, Beltrao P, Krogan NJ. The Global Phosphorylation Landscape of SARS-CoV-2 Infection. Cell 2020; 182:685-712.e19. [PMID: 32645325 PMCID: PMC7321036 DOI: 10.1016/j.cell.2020.06.034] [Citation(s) in RCA: 677] [Impact Index Per Article: 169.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/09/2020] [Accepted: 06/23/2020] [Indexed: 02/07/2023]
Abstract
The causative agent of the coronavirus disease 2019 (COVID-19) pandemic, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has infected millions and killed hundreds of thousands of people worldwide, highlighting an urgent need to develop antiviral therapies. Here we present a quantitative mass spectrometry-based phosphoproteomics survey of SARS-CoV-2 infection in Vero E6 cells, revealing dramatic rewiring of phosphorylation on host and viral proteins. SARS-CoV-2 infection promoted casein kinase II (CK2) and p38 MAPK activation, production of diverse cytokines, and shutdown of mitotic kinases, resulting in cell cycle arrest. Infection also stimulated a marked induction of CK2-containing filopodial protrusions possessing budding viral particles. Eighty-seven drugs and compounds were identified by mapping global phosphorylation profiles to dysregulated kinases and pathways. We found pharmacologic inhibition of the p38, CK2, CDK, AXL, and PIKFYVE kinases to possess antiviral efficacy, representing potential COVID-19 therapies.
Collapse
Affiliation(s)
- Mehdi Bouhaddou
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Danish Memon
- European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Bjoern Meyer
- Viral Populations and Pathogenesis Unit, CNRS UMR 3569, Institut Pasteur, 75724 Paris, Cedex 15, France
| | - Kris M White
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Veronica V Rezelj
- Viral Populations and Pathogenesis Unit, CNRS UMR 3569, Institut Pasteur, 75724 Paris, Cedex 15, France
| | - Miguel Correa Marrero
- European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Benjamin J Polacco
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - James E Melnyk
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA; Howard Hughes Medical Institute
| | - Svenja Ulferts
- Institute for Clinical and Experimental Pharmacology and Toxicology, University of Freiburg, Freiburg 79104, Germany
| | - Robyn M Kaake
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Jyoti Batra
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Alicia L Richards
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Erica Stevenson
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - David E Gordon
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Ajda Rojc
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Kirsten Obernier
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Jacqueline M Fabius
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Margaret Soucheray
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Lisa Miorin
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Elena Moreno
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Cassandra Koh
- Viral Populations and Pathogenesis Unit, CNRS UMR 3569, Institut Pasteur, 75724 Paris, Cedex 15, France
| | - Quang Dinh Tran
- Viral Populations and Pathogenesis Unit, CNRS UMR 3569, Institut Pasteur, 75724 Paris, Cedex 15, France
| | - Alexandra Hardy
- Viral Populations and Pathogenesis Unit, CNRS UMR 3569, Institut Pasteur, 75724 Paris, Cedex 15, France
| | - Rémy Robinot
- Virus & Immunity Unit, Department of Virology, CNRS UMR 3569, Institut Pasteur, 75724 Paris, Cedex 15, France; Vaccine Research Institute, 94000 Creteil, France
| | - Thomas Vallet
- Viral Populations and Pathogenesis Unit, CNRS UMR 3569, Institut Pasteur, 75724 Paris, Cedex 15, France
| | | | - Claudia Hernandez-Armenta
- European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Alistair Dunham
- European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Sebastian Weigang
- Institute of Virology, Medical Center - University of Freiburg, Freiburg 79104, Germany
| | - Julian Knerr
- Institute for Clinical and Experimental Pharmacology and Toxicology, University of Freiburg, Freiburg 79104, Germany
| | - Maya Modak
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Diego Quintero
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Yuan Zhou
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Aurelien Dugourd
- Institute for Computational Biomedicine, Bioquant, Heidelberg University, Faculty of Medicine, and Heidelberg University Hospital, Heidelberg 69120, Germany
| | - Alberto Valdeolivas
- Institute for Computational Biomedicine, Bioquant, Heidelberg University, Faculty of Medicine, and Heidelberg University Hospital, Heidelberg 69120, Germany
| | - Trupti Patil
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Qiongyu Li
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Ruth Hüttenhain
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Merve Cakir
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Monita Muralidharan
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Minkyu Kim
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Gwendolyn Jang
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Beril Tutuncuoglu
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Joseph Hiatt
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Jeffrey Z Guo
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Jiewei Xu
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Sophia Bouhaddou
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA
| | - Christopher J P Mathy
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; Department of Bioengineering & Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Anna Gaulton
- European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Emma J Manners
- European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Eloy Félix
- European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Ying Shi
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA; Howard Hughes Medical Institute
| | - Marisa Goff
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jean K Lim
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | | | | | | | | | | | | | - Emmie De Wit
- NIH/NIAID/Rocky Mountain Laboratories, Hamilton, MT 59840, USA
| | - Andrew R Leach
- European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Tanja Kortemme
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; Department of Bioengineering & Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Brian Shoichet
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA
| | - Melanie Ott
- J. David Gladstone Institutes, San Francisco, CA 94158, USA
| | - Julio Saez-Rodriguez
- Institute for Computational Biomedicine, Bioquant, Heidelberg University, Faculty of Medicine, and Heidelberg University Hospital, Heidelberg 69120, Germany
| | - Benjamin R tenOever
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - R Dyche Mullins
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA; Howard Hughes Medical Institute
| | | | - Georg Kochs
- Institute of Virology, Medical Center - University of Freiburg, Freiburg 79104, Germany; Faculty of Medicine, University of Freiburg, Freiburg 79008, Germany
| | - Robert Grosse
- Institute for Clinical and Experimental Pharmacology and Toxicology, University of Freiburg, Freiburg 79104, Germany; Faculty of Medicine, University of Freiburg, Freiburg 79008, Germany; Centre for Integrative Biological Signalling Studies (CIBSS), Freiburg 79104, Germany.
| | - Adolfo García-Sastre
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
| | - Marco Vignuzzi
- Viral Populations and Pathogenesis Unit, CNRS UMR 3569, Institut Pasteur, 75724 Paris, Cedex 15, France.
| | - Jeffery R Johnson
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Kevan M Shokat
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA; Howard Hughes Medical Institute.
| | - Danielle L Swaney
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA.
| | - Pedro Beltrao
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK.
| | - Nevan J Krogan
- QBI COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA; J. David Gladstone Institutes, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA; Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| |
Collapse
|
7
|
Jun HJ, Appleman VA, Wu HJ, Rose CM, Pineda JJ, Yeo AT, Delcuze B, Lee C, Gyuris A, Zhu H, Woolfenden S, Bronisz A, Nakano I, Chiocca EA, Bronson RT, Ligon KL, Sarkaria JN, Gygi SP, Michor F, Mitchison TJ, Charest A. A PDGFRα-driven mouse model of glioblastoma reveals a stathmin1-mediated mechanism of sensitivity to vinblastine. Nat Commun 2018; 9:3116. [PMID: 30082792 PMCID: PMC6078993 DOI: 10.1038/s41467-018-05036-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 05/24/2018] [Indexed: 11/09/2022] Open
Abstract
Glioblastoma multiforme (GBM) is an aggressive primary brain cancer that includes focal amplification of PDGFRα and for which there are no effective therapies. Herein, we report the development of a genetically engineered mouse model of GBM based on autocrine, chronic stimulation of overexpressed PDGFRα, and the analysis of GBM signaling pathways using proteomics. We discover the tubulin-binding protein Stathmin1 (STMN1) as a PDGFRα phospho-regulated target, and that this mis-regulation confers sensitivity to vinblastine (VB) cytotoxicity. Treatment of PDGFRα-positive mouse and a patient-derived xenograft (PDX) GBMs with VB in mice prolongs survival and is dependent on STMN1. Our work reveals a previously unconsidered link between PDGFRα activity and STMN1, and highlight an STMN1-dependent cytotoxic effect of VB in GBM.
Collapse
Affiliation(s)
- Hyun Jung Jun
- Cancer Research Institute, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
| | - Vicky A Appleman
- Cancer Research Institute, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
| | - Hua-Jun Wu
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA.,Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Christopher M Rose
- Department of Cell Biology, Harvard Medical School, Boston, MA, 02215, USA
| | - Javier J Pineda
- Department of Systems Biology, Harvard Medical School, Boston, MA, 02215, USA
| | - Alan T Yeo
- Sackler School of Graduate Studies, Tufts University School of Medicine, Boston, MA, 02111, USA
| | - Bethany Delcuze
- Sackler School of Graduate Studies, Tufts University School of Medicine, Boston, MA, 02111, USA
| | - Charlotte Lee
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA.,Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Aron Gyuris
- Cancer Research Institute, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
| | - Haihao Zhu
- Molecular Oncology Research Institute, Tufts Medical Center, Boston, MA, 02111, USA
| | - Steve Woolfenden
- Molecular Oncology Research Institute, Tufts Medical Center, Boston, MA, 02111, USA
| | - Agnieszka Bronisz
- Harvey Cushing Neuro-Oncology Laboratories, Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02215, USA
| | - Ichiro Nakano
- Department of Neurosurgery and Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, 35243, USA
| | - Ennio A Chiocca
- Harvey Cushing Neuro-Oncology Laboratories, Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02215, USA
| | - Roderick T Bronson
- Rodent Histopathology Core, Dana-Farber/Harvard Cancer Center, Boston, MA, 02215, USA
| | - Keith L Ligon
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA
| | - Jann N Sarkaria
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, 55902, USA
| | - Steve P Gygi
- Department of Cell Biology, Harvard Medical School, Boston, MA, 02215, USA
| | - Franziska Michor
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA.,Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Timothy J Mitchison
- Department of Systems Biology, Harvard Medical School, Boston, MA, 02215, USA
| | - Al Charest
- Cancer Research Institute, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA. .,Department of Medicine, Harvard Medical School, Boston, MA, 02215, USA.
| |
Collapse
|
8
|
Chakravarthi BVSK, Chandrashekar DS, Agarwal S, Balasubramanya SAH, Pathi SS, Goswami MT, Jing X, Wang R, Mehra R, Asangani IA, Chinnaiyan AM, Manne U, Sonpavde G, Netto GJ, Gordetsky J, Varambally S. miR-34a Regulates Expression of the Stathmin-1 Oncoprotein and Prostate Cancer Progression. Mol Cancer Res 2017; 16:1125-1137. [PMID: 29025958 DOI: 10.1158/1541-7786.mcr-17-0230] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 08/24/2017] [Accepted: 10/09/2017] [Indexed: 12/27/2022]
Abstract
In aggressive prostate cancers, the oncoprotein STMN1 (also known as stathmin 1 and oncoprotein 18) is often overexpressed. STMN1 is involved in various cellular processes, including cell proliferation, motility, and tumor metastasis. Here, it was found that the expression of STMN1 RNA and protein is elevated in metastatic prostate cancers. Knockdown of STMN1 resulted in reduced proliferation and invasion of cells and tumor growth and metastasis in vivo Furthermore, miR-34a downregulated STMN1 by directly binding to its 3'-UTR. Overexpression of miR-34a in prostate cancer cells reduced proliferation and colony formation, suggesting that it is a tumor suppressor. The transcriptional corepressor C-terminal binding protein 1 (CtBP1) negatively regulated expression of miR-34a. Furthermore, gene expression profiling of STMN1-modulated prostate cancer cells revealed molecular alterations, including elevated expression of growth differentiation factor 15 (GDF15), which is involved in cancer progression and potentially in STMN1-mediated oncogenesis. Thus, in prostate cancer, CtBP1-regulated miR-34a modulates STMN1 expression and is involved in cancer progression through the CtBP1\miR-34a\STMN1\GDF15 axis.Implications: The CtBP1\miR-34a\STMN1\GDF15 axis is a potential therapeutic target for treatment of aggressive prostate cancer. Mol Cancer Res; 16(7); 1125-37. ©2017 AACR.
Collapse
Affiliation(s)
- Balabhadrapatruni V S K Chakravarthi
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | | | - Sumit Agarwal
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | | | - Satya S Pathi
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan
| | - Moloy T Goswami
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan
| | - Xiaojun Jing
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan.,Department of Pathology, University of Michigan, Ann Arbor, Michigan
| | - Rui Wang
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan
| | - Rohit Mehra
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan.,Department of Pathology, University of Michigan, Ann Arbor, Michigan.,Comprehensive Cancer Center, University of Michigan, Ann Arbor, Michigan
| | - Irfan A Asangani
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan
| | - Arul M Chinnaiyan
- Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan.,Department of Pathology, University of Michigan, Ann Arbor, Michigan.,Comprehensive Cancer Center, University of Michigan, Ann Arbor, Michigan.,Department of Urology, University of Michigan, Ann Arbor, Michigan.,Howard Hughes Medical Institute, University of Michigan, Ann Arbor, Michigan
| | - Upender Manne
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Guru Sonpavde
- Department of Medical Oncology, GU section, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - George J Netto
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Jennifer Gordetsky
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Sooryanarayana Varambally
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama. .,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama.,Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan
| |
Collapse
|
9
|
Nouar R, Breuzard G, Bastonero S, Gorokhova S, Barbier P, Devred F, Kovacic H, Peyrot V. Direct evidence for the interaction of stathmin along the length and the plus end of microtubules in cells. FASEB J 2016; 30:3202-15. [DOI: 10.1096/fj.201500125r] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 05/31/2015] [Indexed: 02/04/2023]
Affiliation(s)
- Roqiya Nouar
- Aix Marseille Université Mixte de Recherche (UMR) 911Center for Research in Oncobiology and Oncopharmacology (CRO2)Faculté de Pharmacie Marseille France
| | - Gilles Breuzard
- Aix Marseille Université Mixte de Recherche (UMR) 911Center for Research in Oncobiology and Oncopharmacology (CRO2)Faculté de Pharmacie Marseille France
| | - Sonia Bastonero
- Aix Marseille Université Mixte de Recherche (UMR) 911Center for Research in Oncobiology and Oncopharmacology (CRO2)Faculté de Pharmacie Marseille France
| | - Svetlana Gorokhova
- Aix Marseille Université, INSERM UMR 910Génétique Médicale et Génomique Fonctionnelle (GMGF)Faculté de Médecine Marseille France
| | - Pascale Barbier
- Aix Marseille Université Mixte de Recherche (UMR) 911Center for Research in Oncobiology and Oncopharmacology (CRO2)Faculté de Pharmacie Marseille France
| | - François Devred
- Aix Marseille Université Mixte de Recherche (UMR) 911Center for Research in Oncobiology and Oncopharmacology (CRO2)Faculté de Pharmacie Marseille France
| | - Hervé Kovacic
- Aix Marseille Université Mixte de Recherche (UMR) 911Center for Research in Oncobiology and Oncopharmacology (CRO2)Faculté de Pharmacie Marseille France
| | - Vincent Peyrot
- Aix Marseille Université Mixte de Recherche (UMR) 911Center for Research in Oncobiology and Oncopharmacology (CRO2)Faculté de Pharmacie Marseille France
| |
Collapse
|
10
|
Wegiel B, Wang Y, Li M, Jernigan F, Sun L. Novel indolyl-chalcones target stathmin to induce cancer cell death. Cell Cycle 2016; 15:1288-94. [PMID: 26986925 DOI: 10.1080/15384101.2016.1160980] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Efficacy of current therapies for advanced and metastatic cancers remains a challenge in clinical practice. We investigated the anti-cancer potency of 3 novel indoly-chalcones (CITs). Our results indicated the lead molecule CIT-026 (Formula = C20H16FNO) induced cell death in prostate and lung cancer cell lines at sub-micromolar concentration. CITs (CIT-026, CIT-214, CIT-223) lead to microtubule destabilization, cell death and low cell proliferation, which in part was dependent on stathmin (STMN1) expression. Knockdown of STMN1 with siRNA against STMN1 in part restored viability of cancer cells in response to CITs. Further, CIT-026 and CIT-223 blocked cancer cell invasion through matrigel-coated chambers. Mechanistically, CITs inhibited phosphorylation of STMN1 leading to STMN1 accumulation and mitotic catastrophe. In summary, we have synthetized novel anti-cancer CIT molecules and defined their mechanism of action in vitro.
Collapse
Affiliation(s)
- Barbara Wegiel
- a Department of Surgery , Beth Israel Deaconess Medical Center, Harvard Medical School , Boston , MA , USA.,b Transplant Institute & Cancer Research Institute, Beth Israel Deaconess Medical Center , Harvard Medical School , Boston , MA , USA
| | - Yiqiang Wang
- a Department of Surgery , Beth Israel Deaconess Medical Center, Harvard Medical School , Boston , MA , USA.,c Center for Drug Discovery and Translational Research , Beth Israel Deaconess Medical Center , Harvard Medical School , Boston , MA , USA
| | - Mailin Li
- a Department of Surgery , Beth Israel Deaconess Medical Center, Harvard Medical School , Boston , MA , USA.,b Transplant Institute & Cancer Research Institute, Beth Israel Deaconess Medical Center , Harvard Medical School , Boston , MA , USA
| | - Finith Jernigan
- a Department of Surgery , Beth Israel Deaconess Medical Center, Harvard Medical School , Boston , MA , USA.,c Center for Drug Discovery and Translational Research , Beth Israel Deaconess Medical Center , Harvard Medical School , Boston , MA , USA
| | - Lijun Sun
- a Department of Surgery , Beth Israel Deaconess Medical Center, Harvard Medical School , Boston , MA , USA.,c Center for Drug Discovery and Translational Research , Beth Israel Deaconess Medical Center , Harvard Medical School , Boston , MA , USA
| |
Collapse
|
11
|
Chang C, Niu Z, Gu N, Zhao W, Wang G, Jia Y, Li D, Xu C. Analysis of the ways and methods of signaling pathways in regulating cell cycle of NIH3T3 at transcriptional level. BMC Cell Biol 2015; 16:25. [PMID: 26511608 PMCID: PMC4625951 DOI: 10.1186/s12860-015-0071-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 10/19/2015] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND To analyze the ways and methods of signaling pathways in regulating cell cycle progression of NIH3T3 at transcriptional level, we modeled cell cycle of NIH3T3 and found that G1 phase of NIH3T3 cell cycle was at 5-15 h after synchronization, S phase at 15-21 h, G2 phase at 21-22 h, M phase at 22-25 h. RESULTS Mouse Genome 430 2.0 microarray was used to detect the gene expression profiles of the model, and results showed remarkable changes in the expressions of 64 cell cycle genes and 960 genes associated with other physiological activity during the cell cycle of NIH3T3. For the next step, IPA software was used to analyze the physiological activities, cell cycle genes-associated signal transduction activities and their regulatory roles of these genes in cell cycle progression, and our results indicated that the reported genes were involved in 17 signaling pathways in the regulation of cell cycle progression. Newfound genes such as PKC, RAS, PP2A, NGR and PI3K etc. belong to the functional category of molecular mechanism of cancer, cyclins and cell cycle regulation HER-2 signaling in breast cancer signaling pathways. These newfound genes could promote DNA damage repairment and DNA replication progress, regulate the metabolism of protein, and maintain the cell cycle progression of NIH3T3 modulating the reported genes CCND1 and C-FOS. CONCLUSION All of the aforementioned signaling pathways interacted with the cell cycle network, indicating that NIH3T3 cell cycle was regulated by a number of signaling pathways.
Collapse
Affiliation(s)
- Cuifang Chang
- College of Life Science, Henan Normal University, No. 46, Construction East Road, Xinxiang, 453007, Henan Province, P. R. China. .,State Key Laboratory Cultivation Base for Cell Differentiation Regulation, Henan Normal University, Xinxiang, 453007, P. R. China.
| | - Zhipeng Niu
- College of Life Science, Henan Normal University, No. 46, Construction East Road, Xinxiang, 453007, Henan Province, P. R. China. .,State Key Laboratory Cultivation Base for Cell Differentiation Regulation, Henan Normal University, Xinxiang, 453007, P. R. China.
| | - Ningning Gu
- College of Life Science, Henan Normal University, No. 46, Construction East Road, Xinxiang, 453007, Henan Province, P. R. China. .,State Key Laboratory Cultivation Base for Cell Differentiation Regulation, Henan Normal University, Xinxiang, 453007, P. R. China.
| | - Weiming Zhao
- College of Life Science, Henan Normal University, No. 46, Construction East Road, Xinxiang, 453007, Henan Province, P. R. China. .,State Key Laboratory Cultivation Base for Cell Differentiation Regulation, Henan Normal University, Xinxiang, 453007, P. R. China.
| | - Gaiping Wang
- College of Life Science, Henan Normal University, No. 46, Construction East Road, Xinxiang, 453007, Henan Province, P. R. China. .,State Key Laboratory Cultivation Base for Cell Differentiation Regulation, Henan Normal University, Xinxiang, 453007, P. R. China.
| | - Yifeng Jia
- College of Life Science, Henan Normal University, No. 46, Construction East Road, Xinxiang, 453007, Henan Province, P. R. China. .,State Key Laboratory Cultivation Base for Cell Differentiation Regulation, Henan Normal University, Xinxiang, 453007, P. R. China.
| | - Deming Li
- College of Life Science, Henan Normal University, No. 46, Construction East Road, Xinxiang, 453007, Henan Province, P. R. China. .,State Key Laboratory Cultivation Base for Cell Differentiation Regulation, Henan Normal University, Xinxiang, 453007, P. R. China.
| | - Cunshuan Xu
- College of Life Science, Henan Normal University, No. 46, Construction East Road, Xinxiang, 453007, Henan Province, P. R. China. .,State Key Laboratory Cultivation Base for Cell Differentiation Regulation, Henan Normal University, Xinxiang, 453007, P. R. China.
| |
Collapse
|
12
|
p27kip1 controls H-Ras/MAPK activation and cell cycle entry via modulation of MT stability. Proc Natl Acad Sci U S A 2015; 112:13916-21. [PMID: 26512117 DOI: 10.1073/pnas.1508514112] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The cyclin-dependent kinase (CDK) inhibitor p27(kip1) is a critical regulator of the G1/S-phase transition of the cell cycle and also regulates microtubule (MT) stability. This latter function is exerted by modulating the activity of stathmin, an MT-destabilizing protein, and by direct binding to MTs. We recently demonstrated that increased proliferation in p27(kip1)-null mice is reverted by concomitant deletion of stathmin in p27(kip1)/stathmin double-KO mice, suggesting that a CDK-independent function of p27(kip1) contributes to the control of cell proliferation. Whether the regulation of MT stability by p27(kip1) impinges on signaling pathway activation and contributes to the decision to enter the cell cycle is largely unknown. Here, we report that faster cell cycle entry of p27(kip1)-null cells was impaired by the concomitant deletion of stathmin. Using gene expression profiling coupled with bioinformatic analyses, we show that p27(kip1) and stathmin conjunctly control activation of the MAPK pathway. From a molecular point of view, we observed that p27(kip1), by controlling MT stability, impinges on H-Ras trafficking and ubiquitination levels, eventually restraining its full activation. Our study identifies a regulatory axis controlling the G1/S-phase transition, relying on the regulation of MT stability by p27(kip1) and finely controlling the spatiotemporal activation of the Ras-MAPK signaling pathway.
Collapse
|
13
|
Berton S, Pellizzari I, Fabris L, D'Andrea S, Segatto I, Canzonieri V, Marconi D, Schiappacassi M, Benevol S, Gattei V, Colombatti A, Belletti B, Baldassarre G. Genetic characterization of p27(kip1) and stathmin in controlling cell proliferation in vivo. Cell Cycle 2015; 13:3100-11. [PMID: 25486569 PMCID: PMC4612673 DOI: 10.4161/15384101.2014.949512] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The CDK inhibitor p27(kip1) is a critical regulator of cell cycle progression, but the mechanisms by which p27(kip1) controls cell proliferation in vivo are still not fully elucidated. We recently demonstrated that the microtubule destabilizing protein stathmin is a relevant p27(kip1) binding partner. To get more insights into the in vivo significance of this interaction, we generated p27(kip1) and stathmin double knock-out (DKO) mice. Interestingly, thorough characterization of DKO mice demonstrated that most of the phenotypes of p27(kip1) null mice linked to the hyper-proliferative behavior, such as the increased body and organ weight, the outgrowth of the retina basal layer and the development of pituitary adenomas, were reverted by co-ablation of stathmin. In vivo analyses showed a reduced proliferation rate in DKO compared to p27(kip1) null mice, linked, at molecular level, to decreased kinase activity of CDK4/6, rather than of CDK1 and CDK2. Gene expression profiling of mouse thymuses confirmed the phenotypes observed in vivo, showing that DKO clustered with WT more than with p27 knock-out tissue. Taken together, our results demonstrate that stathmin cooperates with p27(kip1) to control the early phase of G1 to S phase transition and that this function may be of particular relevance in the context of tumor progression.
Collapse
Affiliation(s)
- Stefania Berton
- a Department of Translational Research; Division of Experimental Oncology 2; CRO of Aviano, National Cancer Institute ; Aviano , Italy
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Xu K, Harrison RE. Down-regulation of Stathmin Is Required for the Phenotypic Changes and Classical Activation of Macrophages. J Biol Chem 2015; 290:19245-60. [PMID: 26082487 PMCID: PMC4521045 DOI: 10.1074/jbc.m115.639625] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 06/01/2015] [Indexed: 12/19/2022] Open
Abstract
Macrophages are important cells of innate immunity with specialized capacity for recognition and elimination of pathogens and presentation of antigens to lymphocytes for adaptive immunity. Macrophages become activated upon exposure to pro-inflammatory cytokines and pathogenic stimuli. Classical activation of macrophages with interferon-γ (IFNγ) and lipopolysaccharide (LPS) triggers a wide range of signaling events and morphological changes to induce the immune response. Our previous microtubule (MT) proteomic work revealed that the stathmin association with MTs is considerably reduced in activated macrophages, which contain significantly more stabilized MTs. Here, we show that there is a global decrease in stathmin levels, an MT catastrophe protein, in activated macrophages using both immunoblotting and immunofluorescent microscopy. This is an LPS-specific response that induces proteasome-mediated degradation of stathmin. We explored the functions of stathmin down-regulation in activated macrophages by generating a stable cell line overexpressing stathmin-GFP. We show that stathmin-GFP overexpression impacts MT stability, impairs cell spreading, and reduces activation-associated phenotypes. Furthermore, overexpressing stathmin reduces complement receptor 3-mediated phagocytosis and cellular activation, implicating a pivotal inhibitory role for stathmin in classically activated macrophages.
Collapse
Affiliation(s)
- Kewei Xu
- From the Departments of Cell and Systems Biology and Biological Sciences, University of Toronto Scarborough, Toronto, Ontario M1C 1A4, Canada
| | - Rene E Harrison
- From the Departments of Cell and Systems Biology and Biological Sciences, University of Toronto Scarborough, Toronto, Ontario M1C 1A4, Canada
| |
Collapse
|
15
|
Schimmack S, Taylor A, Lawrence B, Schmitz-Winnenthal H, Fischer L, Büchler MW, Modlin IM, Kidd M, Tang LH. Stathmin in pancreatic neuroendocrine neoplasms: a marker of proliferation and PI3K signaling. Tumour Biol 2014; 36:399-408. [DOI: 10.1007/s13277-014-2629-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 09/10/2014] [Indexed: 12/28/2022] Open
|
16
|
Lu Y, Liu C, Xu YF, Cheng H, Shi S, Wu CT, Yu XJ. Stathmin destabilizing microtubule dynamics promotes malignant potential in cancer cells by epithelial-mesenchymal transition. Hepatobiliary Pancreat Dis Int 2014; 13:386-94. [PMID: 25100123 DOI: 10.1016/s1499-3872(14)60038-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Stathmin is a ubiquitous cytosolic regulatory phosphoprotein and is overexpressed in different human malignancies. The main physiological function of stathmin is to interfere with microtubule dynamics by promoting depolymerization of microtubules or by preventing polymerization of tubulin heterodimers. Stathmin plays important roles in regulating many cellular functions as a result of its microtubule-destabilizing activity. Currently, the critical roles of stathmin in cancer cells, as well as in lymphocytes have been valued. This review discusses stathmin and microtubule dynamics in cancer development, and hypothesizes their possible relationship with epithelial-mesenchymal transition (EMT). DATA SOURCES A PubMed search using such terms as "stathmin", "microtubule dynamics", "epithelial-mesenchymal transition", "EMT", "malignant potential" and "cancer" was performed to identify relevant studies published in English. More than 100 related articles were reviewed. RESULTS The literature clearly documented the relationship between stathmin and its microtubule-destabilizing activity of cancer development. However, the particular mechanism is poorly understood. Microtubule disruption is essential for EMT, which is a crucial process during cancer development. As a microtubule-destabilizing protein, stathmin may promote malignant potential in cancer cells by initiating EMT. CONCLUSIONS We propose that there is a stathmin-microtubule dynamics-EMT (S-M-E) axis during cancer development. By this axis, stathmin together with its microtubule-destabilizing activity contributes to EMT, which stimulates the malignant potential in cancer cells.
Collapse
Affiliation(s)
- Yu Lu
- Pancreatic Cancer Institute, Fudan University; Department of Pancreatic and Hepatobiliary Surgery, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China.
| | | | | | | | | | | | | |
Collapse
|
17
|
Yip YY, Yeap YYC, Bogoyevitch MA, Ng DCH. cAMP-dependent protein kinase and c-Jun N-terminal kinase mediate stathmin phosphorylation for the maintenance of interphase microtubules during osmotic stress. J Biol Chem 2013; 289:2157-69. [PMID: 24302736 DOI: 10.1074/jbc.m113.470682] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Dynamic microtubule changes after a cell stress challenge are required for cell survival and adaptation. Stathmin (STMN), a cytoplasmic microtubule-destabilizing phosphoprotein, regulates interphase microtubules during cell stress, but the signaling mechanisms involved are poorly defined. In this study ectopic expression of single alanine-substituted phospho-resistant mutants demonstrated that STMN Ser-38 and Ser-63 phosphorylation were specifically required to maintain interphase microtubules during hyperosmotic stress. STMN was phosphorylated on Ser-38 and Ser-63 in response to hyperosmolarity, heat shock, and arsenite treatment but rapidly dephosphorylated after oxidative stress treatment. Two-dimensional PAGE and Phos-tag gel analysis of stress-stimulated STMN phospho-isoforms revealed rapid STMN Ser-38 phosphorylation followed by subsequent Ser-25 and Ser-63 phosphorylation. Previously, we delineated stress-stimulated JNK targeting of STMN. Here, we identified cAMP-dependent protein kinase (PKA) signaling as responsible for stress-induced STMN Ser-63 phosphorylation. Increased cAMP levels induced by cholera toxin triggered potent STMN Ser-63 phosphorylation. Osmotic stress stimulated an increase in PKA activity and elevated STMN Ser-63 and CREB (cAMP-response element-binding protein) Ser-133 phosphorylation that was substantially attenuated by pretreatment with H-89, a PKA inhibitor. Interestingly, PKA activity and subsequent phosphorylation of STMN were augmented in the absence of JNK activation, indicating JNK and PKA pathway cross-talk during stress regulation of STMN. Taken together our study indicates that JNK- and PKA-mediated STMN Ser-38 and Ser-63 phosphorylation are required to preserve interphase microtubules in response to hyperosmotic stress.
Collapse
Affiliation(s)
- Yan Y Yip
- From the Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Victoria 3010, Australia
| | | | | | | |
Collapse
|
18
|
D'Andrea S, Berton S, Segatto I, Fabris L, Canzonieri V, Colombatti A, Vecchione A, Belletti B, Baldassarre G. Stathmin is dispensable for tumor onset in mice. PLoS One 2012; 7:e45561. [PMID: 23029098 PMCID: PMC3447788 DOI: 10.1371/journal.pone.0045561] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 08/20/2012] [Indexed: 11/18/2022] Open
Abstract
The microtubule-destabilizing protein stathmin is highly expressed in several types of tumor, thus deserving the name of oncoprotein 18. High levels of stathmin expression and/or activity favor the metastatic spreading and mark the most aggressive tumors, thus representing a realistic marker of poor prognosis. Stathmin is a downstream target of many signaling pathways, including Ras-MAPK, PI3K and p53, involved in both tumor onset and progression. We thus hypothesized that stathmin could also play a role during the early stages of tumorigenesis, an issue completely unexplored. In order to establish whether stathmin expression is necessary for tumor initiation, we challenged wild type (WT), stathmin heterozygous and stathmin knock-out (KO) mice with different carcinogens. Using well-defined mouse models of carcinogenesis of skin, bladder and muscle by the means of 7,12-dimethylbenz[α]antracene (DMBA)/12-O-tetradecanoylphorbol-13-acetate (TPA), N-butyl-N-(4-hydroxybutyl) nitrosamine (BBN) and 3-methylcholanthrylene (3MC) treatments, respectively, we demonstrated that knock-out of stathmin has no impact on the onset of cancer in mice. No significant difference was noticed either when the Ras oncogene was mutated (skin carcinogenesis model) or when the p53 pathway was inactivated (bladder carcinomas and fibrosarcomas). Finally, we concomitantly impinged on p53 and Ras pathways, by generating WT and stathmin KO mouse embryo fibroblasts transformed with papilloma virus large T antigen (LgTAg) plus the K-RasG12V oncogene. In vivo growth of xenografts from these transformed fibroblasts did not highlight any significant difference depending on the presence or absence of stathmin. Overall, our work demonstrates that stathmin expression is dispensable for tumor onset, at least in mice, thus making stathmin a virtually exclusive marker of aggressive disease and a promising therapeutic target for advanced cancers.
Collapse
Affiliation(s)
- Sara D'Andrea
- Division of Experimental Oncology 2, CRO, National Cancer Institute, Aviano, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Yap WH, Khoo KS, Lim SH, Yeo CC, Lim YM. Proteomic analysis of the molecular response of Raji cells to maslinic acid treatment. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2012; 19:183-191. [PMID: 21893403 DOI: 10.1016/j.phymed.2011.08.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2011] [Revised: 06/25/2011] [Accepted: 08/08/2011] [Indexed: 05/31/2023]
Abstract
Maslinic acid, a natural pentacyclic triterpene has been shown to inhibit growth and induce apoptosis in some tumour cell lines. We studied the molecular response of Raji cells towards maslinic acid treatment. A proteomics approach was employed to identify the target proteins. Seventeen differentially expressed proteins including those involved in DNA replication, microtubule filament assembly, nucleo-cytoplasmic trafficking, cell signaling, energy metabolism and cytoskeletal organization were identified by MALDI TOF-TOF MS. The down-regulation of stathmin, Ran GTPase activating protein-1 (RanBP1), and microtubule associated protein RP/EB family member 1 (EB1) were confirmed by Western blotting. The study of the effect of maslinic acid on Raji cell cycle regulation showed that it induced a G1 cell cycle arrest. The differential proteomic changes in maslinic acid-treated Raji cells demonstrated that it also inhibited expression of dUTPase and stathmin which are known to induce early S and G2 cell cycle arrests. The mechanism of maslinic acid-induced cell cycle arrest may be mediated by inhibiting cyclin D1 expression and enhancing the levels of cell cycle-dependent kinase (CDK) inhibitor p21 protein. Maslinic acid suppressed nuclear factor-kappa B (NF-κB) activity which is known to stimulate expression of anti-apoptotic and cell cycle regulatory gene products. These results suggest that maslinic acid affects multiple signaling molecules and inhibits fundamental pathways regulating cell growth and survival in Raji cells.
Collapse
Affiliation(s)
- W H Yap
- Faculty of Science, Universiti Tunku Abdul Rahman, Bandar Barat, Kampar, Perak, Malaysia
| | | | | | | | | |
Collapse
|
20
|
Nadeem L, Brkic J, Chen YF, Bui T, Munir S, Peng C. Cytoplasmic mislocalization of p27 and cdk2 mediates the anti-migratory and anti-proliferative effects of Nodal in human trophoblast cells. J Cell Sci 2012; 126:445-53. [DOI: 10.1242/jcs.110197] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
p27Kip1, a cyclin-dependent kinase (CDK) inhibitor, is a multi-functional protein that regulates various cellular activities. Trophoblast proliferation, migration, and invasion are some of the key processes of placental development. We have recently reported that Nodal, a member of the transforming growth factor-β (TGF-β) superfamily, inhibits human trophoblast cell proliferation, migration and invasion. In this study, we investigated the mechanism by which Nodal regulates trophoblast activities. We found that Nodal increased p27 mRNA and protein levels by enhancing their stability. Interestingly, Nodal signaling also induced nuclear export of p27 and cdk2. Cytoplasmic translocation of p27 induced by Nodal requires p27 phosphorylation at S10. In addition, Nodal enhanced the association of p27 with cdk2, cdk5 and a microtubule-destabilizing protein; stathmin, and induced stathmin phosphorylation at S25 and S38. Furthermore, Nodal increased tubulin stability as revealed by immunofluorescent staining of acetylated tubulin. Finally, silencing of p27 reversed the inhibitory effect of Nodal on trophoblast cell proliferation, migration, and invasion. Taken together, our findings revealed a novel function of simultaneous p27 and cdk2 cytoplasmic mislocalization in mediating growth factor-regulated cell proliferation, migration and invasion.
Collapse
|
21
|
Lin Y, Li C, Shan B, Wang W, Saito S, Xu J, Di J, Zhong Y, Li DJ. Reduced stathmin-1 expression in natural killer cells associated with spontaneous abortion. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 178:506-14. [PMID: 21281784 DOI: 10.1016/j.ajpath.2010.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 09/23/2010] [Accepted: 10/04/2010] [Indexed: 10/18/2022]
Abstract
Female CBA/J mice impregnated by male DBA/2J mice (CBA/J×DBA/2J matings) are prone to spontaneous abortion, although the reason for this is unclear. In this study, the stathmin-1 expression pattern was evaluated in uterine natural killer (uNK) cells purified from CBA/J×DBA/2J matings. Results were compared with those in a CBA/J×BALB/c control group that yields successful pregnancies. The mean ± SD percentage of stathmin-1(+) cells in the CD49b(+) uNK cell population was lower in CBA/J×DBA/2J mice (0.7% ± 0.4%) than in control CBA/J×BALB/c mice (4.9% ± 1.5%, P < 0.01) using flow cytometry, and the intracellular stathmin-1 level in uNK cells was lower in CBA/J×DBA/2J mice than in control mice using Western blot analysis. Co-localization of lectin from Dolichos biflorus agglutinin (DBA-lectin) and stathmin-1 was confirmed using multivision immunohistochemical analysis. The frequency of stathmin-1(+)DBA-lectin(+) cells was lower in CBA/J×DBA/2J mice than in CBA/J×BALB/c mice. A similar trend in the frequency of stathmin-1(+)CD56(+) cells was seen in patients with unexplained spontaneous abortion compared with normal early pregnancy. A neutralizing antibody against stathmin-1 further increased the percentage of embryo loss in CBA/J×DBA/2J matings. These results provide evidence that stathmin-1 expression in uNK cells at the maternal-fetal interface may help modulate uNK cell function and may be beneficial for a successful pregnancy.
Collapse
Affiliation(s)
- Yi Lin
- Department of Obstetrics and Gynecology, Institute of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Wagner W, Ajuh P, Löwer J, Wessler S. Quantitative phosphoproteomic analysis of prion-infected neuronal cells. Cell Commun Signal 2010; 8:28. [PMID: 20920157 PMCID: PMC2955621 DOI: 10.1186/1478-811x-8-28] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Accepted: 09/28/2010] [Indexed: 11/10/2022] Open
Abstract
Prion diseases or transmissible spongiform encephalopathies (TSEs) are fatal diseases associated with the conversion of the cellular prion protein (PrPC) to the abnormal prion protein (PrPSc). Since the molecular mechanisms in pathogenesis are widely unclear, we analyzed the global phospho-proteome and detected a differential pattern of tyrosine- and threonine phosphorylated proteins in PrPSc-replicating and pentosan polysulfate (PPS)-rescued N2a cells in two-dimensional gel electrophoresis. To quantify phosphorylated proteins, we performed a SILAC (stable isotope labeling by amino acids in cell culture) analysis and identified 105 proteins, which showed a regulated phosphorylation upon PrPSc infection. Among those proteins, we validated the dephosphorylation of stathmin and Cdc2 and the induced phosphorylation of cofilin in PrPSc-infected N2a cells in Western blot analyses. Our analysis showed for the first time a differentially regulated phospho-proteome in PrPSc infection, which could contribute to the establishment of novel protein markers and to the development of novel therapeutic intervention strategies in targeting prion-associated disease.
Collapse
Affiliation(s)
- Wibke Wagner
- Paul Ehrlich Institute, Paul Ehrlich-Straße 51-59, D-63225 Langen, Germany.
| | | | | | | |
Collapse
|
23
|
Cova E, Ghiroldi A, Guareschi S, Mazzini G, Gagliardi S, Davin A, Bianchi M, Ceroni M, Cereda C. G93A SOD1 alters cell cycle in a cellular model of Amyotrophic Lateral Sclerosis. Cell Signal 2010; 22:1477-84. [PMID: 20561900 DOI: 10.1016/j.cellsig.2010.05.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2010] [Accepted: 05/26/2010] [Indexed: 12/14/2022]
Abstract
Amyotrophic Lateral Sclerosis (ALS) is a neurodegenerative multifactorial disease characterized, like other diseases such as Alzheimer's disease (AD), Parkinson's disease (PD) or frontotemporal dementia (FTD), by the degeneration of specific neuronal cell populations. Motor neuron loss is distinctive of ALS. However, the causes of onset and progression of motor neuron death are still largely unknown. In about 2% of all cases, mutations in the gene encoding for the Cu/Zn superoxide dismutase (SOD1) are implicated in the disease. Several alterations in the expression or activation of cell cycle proteins have been described in the neurodegenerative diseases and related to cell death. In this work we show that mutant SOD1 can alter cell cycle in a cellular model of ALS. Our findings suggest that modifications in the cell cycle progression could be due to an increased interaction between mutant G93A SOD1 and Bcl-2 through the cyclins regulator p27. As previously described in post mitotic neurons, cell cycle alterations could fatally lead to cell death.
Collapse
Affiliation(s)
- Emanuela Cova
- Laboratory of Experimental Neurobiology, IRCCS, National Neurological Institute C. Mondino, Via Mondino, 2, 27100 Pavia, Italy.
| | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Chen PW, Lin SJ, Tsai SC, Lin JH, Chen MR, Wang JT, Lee CP, Tsai CH. Regulation of microtubule dynamics through phosphorylation on stathmin by Epstein-Barr virus kinase BGLF4. J Biol Chem 2010; 285:10053-10063. [PMID: 20110360 DOI: 10.1074/jbc.m109.044420] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Stathmin is an important microtubule (MT)-destabilizing protein, and its activity is differently attenuated by phosphorylation at one or more of its four phosphorylatable serine residues (Ser-16, Ser-25, Ser-38, and Ser-63). This phosphorylation of stathmin plays important roles in mitotic spindle formation. We observed increasing levels of phosphorylated stathmin in Epstein-Barr virus (EBV)-harboring lymphoblastoid cell lines (LCLs) and nasopharyngeal carcinoma (NPC) cell lines during the EBV lytic cycle. These suggest that EBV lytic products may be involved in the regulation of stathmin phosphorylation. BGLF4 is an EBV-encoded kinase and has similar kinase activity to cdc2, an important kinase that phosphorylates serine residues 25 and 38 of stathmin during mitosis. Using an siRNA approach, we demonstrated that BGLF4 contributes to the phosphorylation of stathmin in EBV-harboring NPC. Moreover, we confirmed that BGLF4 interacts with and phosphorylates stathmin using an in vitro kinase assay and an in vivo two-dimensional electrophoresis assay. Interestingly, unlike cdc2, BGLF4 was shown to phosphorylate non-proline directed serine residues of stathmin (Ser-16) and it mediated phosphorylation of stathmin predominantly at serines 16, 25, and 38, indicating that BGLF4 can down-regulate the activity of stathmin. Finally, we demonstrated that the pattern of MT organization was changed in BGLF4-expressing cells, possibly through phosphorylation of stathmin. In conclusion, we have shown that a viral Ser/Thr kinase can directly modulate the activity of stathmin and this contributes to alteration of cellular MT dynamics and then may modulate the associated cellular processes.
Collapse
Affiliation(s)
- Po-Wen Chen
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
| | - Sue-Jane Lin
- Research Center for Emerging Viral Infections and Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Taoyuan 333, Taiwan
| | - Shu-Chun Tsai
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
| | - Jiun-Han Lin
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
| | - Mei-Ru Chen
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
| | - Jiin-Tarng Wang
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
| | - Chung-Pei Lee
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
| | - Ching-Hwa Tsai
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan.
| |
Collapse
|
25
|
Holmfeldt P, Sellin ME, Gullberg M. Predominant regulators of tubulin monomer-polymer partitioning and their implication for cell polarization. Cell Mol Life Sci 2009; 66:3263-76. [PMID: 19585080 PMCID: PMC11115727 DOI: 10.1007/s00018-009-0084-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 06/19/2009] [Accepted: 06/22/2009] [Indexed: 12/15/2022]
Abstract
The microtubule-system organizes the cytoplasm during interphase and segregates condensed chromosomes during mitosis. Four unrelated conserved proteins, XMAP215/Dis1/TOGp, MCAK, MAP4 and Op18/stathmin, have all been implicated as predominant regulators of tubulin monomer-polymer partitioning in animal cells. However, while studies employing the Xenopus egg extract model system indicate that the partitioning is largely governed by the counteractive activities of XMAP215 and MCAK, studies of human cell lines indicate that MAP4 and Op18 are the predominant regulators of the interphase microtubule-array. Here, we review functional interplay of these proteins during interphase and mitosis in various cell model systems. We also review the evidence that MAP4 and Op18 have interphase-specific, counteractive and phosphorylation-inactivated activities that govern tubulin subunit partitioning in many mammalian cell types. Finally, we discuss evidence indicating that partitioning regulation by MAP4 and Op18 may be of significance to establish cell polarity.
Collapse
Affiliation(s)
- Per Holmfeldt
- Department of Molecular Biology, University of Umeå, Umeå, Sweden.
| | | | | |
Collapse
|
26
|
Santamaría E, Mora MI, Muñoz J, Sánchez-Quiles V, Fernández-Irigoyen J, Prieto J, Corrales FJ. Regulation of stathmin phosphorylation in mouse liver progenitor-29 cells during proteasome inhibition. Proteomics 2009; 9:4495-506. [DOI: 10.1002/pmic.200900110] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
27
|
Manna T, Thrower DA, Honnappa S, Steinmetz MO, Wilson L. Regulation of microtubule dynamic instability in vitro by differentially phosphorylated stathmin. J Biol Chem 2009; 284:15640-9. [PMID: 19359244 PMCID: PMC2708860 DOI: 10.1074/jbc.m900343200] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2009] [Revised: 03/18/2009] [Indexed: 11/06/2022] Open
Abstract
Stathmin is an important regulator of microtubule polymerization and dynamics. When unphosphorylated it destabilizes microtubules in two ways, by reducing the microtubule polymer mass through sequestration of soluble tubulin into an assembly-incompetent T2S complex (two alpha:beta tubulin dimers per molecule of stathmin), and by increasing the switching frequency (catastrophe frequency) from growth to shortening at plus and minus ends by binding directly to the microtubules. Phosphorylation of stathmin on one or more of its four serine residues (Ser(16), Ser(25), Ser(38), and Ser(63)) reduces its microtubule-destabilizing activity. However, the effects of phosphorylation of the individual serine residues of stathmin on microtubule dynamic instability have not been investigated systematically. Here we analyzed the effects of stathmin singly phosphorylated at Ser(16) or Ser(63), and doubly phosphorylated at Ser(25) and Ser(38), on its ability to modulate microtubule dynamic instability at steady-state in vitro. Phosphorylation at either Ser(16) or Ser(63) strongly reduced or abolished the ability of stathmin to bind to and sequester soluble tubulin and its ability to act as a catastrophe factor by directly binding to the microtubules. In contrast, double phosphorylation of Ser(25) and Ser(38) did not affect the binding of stathmin to tubulin or microtubules or its catastrophe-promoting activity. Our results indicate that the effects of stathmin on dynamic instability are strongly but differently attenuated by phosphorylation at Ser(16) and Ser(63) and support the hypothesis that selective targeting by Ser(16)-specific or Ser(63)-specific kinases provides complimentary mechanisms for regulating microtubule function.
Collapse
Affiliation(s)
- Tapas Manna
- From the Department of Molecular, Cellular, and Developmental Biology and the Neuroscience Research Institute, University of California, Santa Barbara, California 93106 and
| | - Douglas A. Thrower
- From the Department of Molecular, Cellular, and Developmental Biology and the Neuroscience Research Institute, University of California, Santa Barbara, California 93106 and
| | - Srinivas Honnappa
- Biomolecular Research, Structural Biology, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Michel O. Steinmetz
- Biomolecular Research, Structural Biology, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Leslie Wilson
- From the Department of Molecular, Cellular, and Developmental Biology and the Neuroscience Research Institute, University of California, Santa Barbara, California 93106 and
| |
Collapse
|
28
|
Lin X, Liu S, Luo X, Ma X, Guo L, Li L, Li Z, Tao Y, Cao Y. EBV-encoded LMP1 regulates Op18/stathmin signaling pathway by cdc2 mediation in nasopharyngeal carcinoma cells. Int J Cancer 2009; 124:1020-7. [PMID: 19048596 DOI: 10.1002/ijc.23767] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Oncoprotein 18/stathmin (Op18/stathmin) plays a crucial role in maintaining cell biological characteristics by regulating microtubule dynamics, especially entry into mitosis; phosphorylated Op18/stathmin promotes microtubule polymerization to form the mitotic spindle, which is essential for chromosome segregation and cell division. Cdc2 is a critical kinase in starting M phase events in cell-cycle progression and is a positive regulator of the cell cycle. Latent membrane protein 1 (LMP1) is an Epstein-Barr virus (EBV)-encoded oncogenic protein that is able to induce carcinogenesis via various signaling pathways. This study focused on regulation by LMP1 of Op18/stathmin signaling in nasopharyngeal carcinoma (NPC) cells and showed that LMP1 regulates Op18/stathmin signaling through cdc2 mediation, LMP1 upregulates cdc2 kinase activity, and Op18/stathmin phosphorylation promotes the interaction of cdc2 with Op18/stathmin and microtubule polymerization during mitosis, and inhibition of LMP1 expression attenuates the interaction of cdc2 and Op18/stathmin and promotes microtubule depolymerization. These results reveal a new pathway via which LMP1 regulates Op18/stathmin signaling by cdc2 mediation; this new signaling pathway not only perfects the LMP1 regulation network but also elucidates the molecular mechanism of LMP1 that leads to carcinogenesis.
Collapse
Affiliation(s)
- Xuechi Lin
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Hunan, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Langenickel TH, Olive M, Boehm M, San H, Crook MF, Nabel EG. KIS protects against adverse vascular remodeling by opposing stathmin-mediated VSMC migration in mice. J Clin Invest 2008; 118:3848-59. [PMID: 19033656 DOI: 10.1172/jci33206] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Accepted: 09/17/2008] [Indexed: 11/17/2022] Open
Abstract
Vascular proliferative diseases are characterized by VSMC proliferation and migration. Kinase interacting with stathmin (KIS) targets 2 key regulators of cell proliferation and migration, the cyclin-dependent kinase inhibitor p27Kip1 and the microtubule-destabilizing protein stathmin. Phosphorylation of p27Kip1 by KIS leads to cell-cycle progression, whereas the target sequence and the physiological relevance of KIS-mediated stathmin phosphorylation in VSMCs are unknown. Here we demonstrated that vascular wound repair in KIS-/- mice resulted in accelerated formation of neointima, which is composed predominantly of VSMCs. Deletion of KIS increased VSMC migratory activity and cytoplasmic tubulin destabilizing activity, but abolished VSMC proliferation through the delayed nuclear export and degradation of p27Kip1. This promigratory phenotype resulted from increased stathmin protein levels, caused by a lack of KIS-mediated stathmin phosphorylation at serine 38 and diminished stathmin protein degradation. Downregulation of stathmin in KIS-/- VSMCs fully restored the phenotype, and stathmin-deficient mice demonstrated reduced lesion formation in response to vascular injury. These data suggest that KIS protects against excessive neointima formation by opposing stathmin-mediated VSMC migration and that VSMC migration represents a major mechanism of vascular wound repair, constituting a relevant target and mechanism for therapeutic interventions.
Collapse
Affiliation(s)
- Thomas H Langenickel
- Vascular Biology and Genomics Section, Genome Technology Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland, USA
| | | | | | | | | | | |
Collapse
|
30
|
Chi Y, Welcker M, Hizli AA, Posakony JJ, Aebersold R, Clurman BE. Identification of CDK2 substrates in human cell lysates. Genome Biol 2008; 9:R149. [PMID: 18847512 PMCID: PMC2760876 DOI: 10.1186/gb-2008-9-10-r149] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2008] [Revised: 09/29/2008] [Accepted: 10/13/2008] [Indexed: 12/04/2022] Open
Abstract
Engineered kinases and thiophosphate enrichment were used to identify many candidate CDK2 substrates in human cell lysates. Background Protein phosphorylation regulates a multitude of biological processes. However, the large number of protein kinases and their substrates generates an enormously complex phosphoproteome. The cyclin-dependent kinases - the CDKs - comprise a class of enzymes that regulate cell cycle progression and play important roles in tumorigenesis. However, despite intense study, only a limited number of mammalian CDK substrates are known. A comprehensive understanding of CDK function requires the identification of their substrate network. Results We describe a simple and efficient approach to identify potential cyclin A-CDK2 targets in complex cell lysates. Using a kinase engineering strategy combined with chemical enrichment and mass spectrometry, we identified 180 potential cyclin A-CDK2 substrates and more than 200 phosphorylation sites. About 10% of these candidates function within pathways related to cell division, and the vast majority are involved in other fundamental cellular processes. We have validated several candidates as direct cyclin A-CDK2 substrates that are phosphorylated on the same sites that we identified by mass spectrometry, and we also found that one novel substrate, the ribosomal protein RL12, exhibits site-specific CDK2-dependent phosphorylation in vivo. Conclusions We used methods entailing engineered kinases and thiophosphate enrichment to identify a large number of candidate CDK2 substrates in cell lysates. These results are consistent with other recent proteomic studies, and suggest that CDKs regulate cell division via large networks of cellular substrates. These methods are general and can be easily adapted to identify direct substrates of many other protein kinases.
Collapse
Affiliation(s)
- Yong Chi
- Divisions of Clinical Research and Human Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N., Seattle, WA 98109, USA
| | | | | | | | | | | |
Collapse
|
31
|
Abstract
Stathmin is an important phosphorylation-controlled regulator of microtubule dynamics and plays a crucial role in cell division and cell proliferation. In its non-phosphorylated form, stathmin is the protein that interacts the most tightly with tubulin, in a 2:1 tubulin-stathmin (T2S) complex that does not participate in microtubule assembly. The importance of stathmin at different levels of phosphorylation in different steps of mitosis This article is a short overview of the different methods that have been or could be used to monitor the kinetic and thermodynamic parameters of tubulin-stathmin interaction and to evaluate the effects of phosphorylation. The author has tried to emphasize how hydrodynamic and spectroscopic methods measuring direct binding of stathmin to tubulin can be complemented by methods that make use of linked functions, measuring how the change in a functional property of tubulin upon binding stathmin provides information on binding parameters.
Collapse
|
32
|
Okoli AS, Fox EM, Raftery MJ, Mendz GL. Effects of Helicobacter hepaticus on the proteome of HEp-2 cells. Antonie van Leeuwenhoek 2007; 92:289-300. [PMID: 17357813 DOI: 10.1007/s10482-007-9155-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2006] [Revised: 10/20/2006] [Accepted: 12/13/2006] [Indexed: 10/23/2022]
Abstract
Helicobacter hepaticus infects the bowel and biliary tree of several animals, producing inflammation. Colonisation of mouse livers can induce hepatocellular carcinomas. The effects of H. hepaticus on the proliferation and global protein expression of human HEp-2 cells were studied by examining the changes in the protein profiles of cells exposed to the bacterium. HEp-2 cells were grown for four days under a microaerobic atmosphere or under the same conditions in co-cultures with H. hepaticus at various inoculum densities. Enlargement, distension and elongation of HEp-2 cells were observed in co-cultures with H. hepaticus. The number of live cells declined by only an order of magnitude at bacterial inocula of approximately 10(9)cfu/ml, but were reduced to less than 10(3)cells/ml at approximately 10(10)cfu/ml bacteria inocula. Protein expression by HEp-2 cells was investigated employing two-dimensional gel electrophoresis. In cells grown with or without bacteria, 17 differentially expressed proteins were identified by tandem mass spectrometry. These proteins participated in several biological functions including amino acid metabolism, cell growth and proliferation, stress response, protein translation and modification, etc. The onset of a catastrophic killing of HEp-2 cells at a bacterial density of approximately 10(9)cfu/ml suggested a multimodal action for H. hepaticus infection, and the modulation of the expression of proteins involved in different biological functions showed that the presence of H. hepaticus has broad effects on the physiology of HEp-2 cells.
Collapse
Affiliation(s)
- Arinze S Okoli
- School of Medical Sciences, The University of New South Wales, Sydney, NSW 2052, Australia
| | | | | | | |
Collapse
|
33
|
Yuan RH, Jeng YM, Chen HL, Lai PL, Pan HW, Hsieh FJ, Lin CY, Lee PH, Hsu HC. Stathmin overexpression cooperates with p53 mutation and osteopontin overexpression, and is associated with tumour progression, early recurrence, and poor prognosis in hepatocellular carcinoma. J Pathol 2006; 209:549-58. [PMID: 16739096 DOI: 10.1002/path.2011] [Citation(s) in RCA: 122] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Stathmin, a major microtubule-depolymerizing protein, is involved in cell cycle progression and cell motility. This study aimed to elucidate its role in the progression, early tumour recurrence (ETR), and prognosis of hepatocellular carcinoma (HCC). Stathmin mRNA was overexpressed in 88/156 (56%) resected, unifocal, primary HCCs, while p53 mutation was present in 72 (46%) and osteopontin mRNA overexpression in 79 (51%). Stathmin mRNA expression exhibited high concordance (93%) with protein expression in 107 cases examined by immunohistochemistry. Stathmin overexpression correlated with high alpha-fetoprotein (>200 ng/ml, p = 0.02), larger tumour size (>5 cm, p = 0.012), high tumour grade (p < 0.0002), high tumour stage (stage IIIA-IV) with vascular invasion and various degrees of intrahepatic metastasis (p < 1 x 10(-8)), ETR (p = 0.003), and lower 5-year survival (p = 0.0007). Stathmin protein expression was often more intense in the peripheral regions of tumour trabeculae, tumour borders, and portal vein tumour thrombi. Stathmin overexpression correlated with p53 mutation (p = 0.017) and osteopontin overexpression (p = 1 x 10(-8)), both of which were associated with vascular invasion (both p < 0.0001) and poorer prognosis (p < 0.0004 and p = 0.0004, respectively). Regardless of the status of p53 mutation or osteopontin expression, stathmin overexpression was associated with higher vascular invasion (all p < 0.0001). Approximately 90% of HCCs harbouring stathmin overexpression with concomitant p53 mutation or osteopontin overexpression exhibited vascular invasion, and hence the lowest 5-year survival, p = 0.00018 and p = 0.0009, respectively. However, we did not find that stathmin overexpression exerted prognostic impact independent of tumour stage. In conclusion, stathmin expression correlates with metastatic potential, is an important prognostic factor for HCC, and may serve as a useful marker to predict ETR.
Collapse
Affiliation(s)
- R-H Yuan
- Department of Surgery, National Taiwan University Hospital, Taipei
| | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Yoshie M, Tamura K, Hara T, Kogo H. Expression of stathmin family genes in the murine uterus during early pregnancy. Mol Reprod Dev 2006; 73:164-72. [PMID: 16245356 DOI: 10.1002/mrd.20408] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Stathmin, a cytosolic phosphoprotein that regulates microtubule dynamics during cell-cycle progression, is abundantly expressed at embryo implantation sites in rats. Here, we characterized the expression of stathmin and its family genes in the murine uterus during the peri-implantation period. Stathmin protein was expressed in the glandular and luminal epithelium, blood vessels, and stromal cells on day 3 of pregnancy. On the day of implantation (day 5), stathmin was mainly localized in blood vessels in the endometrium. On day 7, intense stathmin expression was limited to capillary vessels and secondary decidual cells. Stathmin expression was higher at implantation sites than at uterine segments between implantation sites and increased during oil-induced decidualization. Although the artificially-induced deciduoma weights and number of implantation sites were similar between stathmin-knockout (KO) and wild-type (WT) mice, the stathmin-KO mice had fewer newborn pups (reduced by 30%). The expression of alkaline phosphatase, desmin, and cyclin D3 was attenuated in decidual zones of stathmin-KO mice. Messenger RNA level of the stathmin family gene, SCG10, was high at the time of decidualization in WT and stathmin-KO mice. In contrast, the others of stathmin family members, SCLIP and RB3 were highly expressed in stathmin-KO mice compared to WT mice. These results suggest that stathmin and stathmin family genes are expressed in the murine endometrium with enhanced expression in the implantation or the decidualization process.
Collapse
Affiliation(s)
- Mikihiro Yoshie
- Department of Endocrine Pharmacology, Tokyo University of Pharmacy & Life Science, 1432-1 Horinouchi, Hachioji-shi, Tokyo 192-0392, Japan
| | | | | | | |
Collapse
|
35
|
Holmfeldt P, Brännström K, Stenmark S, Gullberg M. Aneugenic activity of Op18/stathmin is potentiated by the somatic Q18-->e mutation in leukemic cells. Mol Biol Cell 2006; 17:2921-30. [PMID: 16624860 PMCID: PMC1483029 DOI: 10.1091/mbc.e06-02-0165] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Op18/stathmin (Op18) is a phosphorylation-regulated microtubule destabilizer that is frequently overexpressed in tumors. The importance of Op18 in malignancy was recently suggested by identification of a somatic Q18-->E mutation of Op18 in an adenocarcinoma. We addressed the functional consequences of aberrant Op18 expression in leukemias by analyzing the cell cycle of K562 cells either depleted of Op18 by expression of interfering hairpin RNA or induced to express wild-type or Q18E substituted Op18. We show here that although Op18 depletion increases microtubule density during interphase, the density of mitotic spindles is essentially unaltered and cells divide normally. This is consistent with phosphorylation-inactivation of Op18 during mitosis. Overexpression of wild-type Op18 results in aneugenic activities, manifest as aberrant mitosis, polyploidization, and chromosome loss. One particularly significant finding was that the aneugenic activity of Op18 was dramatically increased by the Q18-->E mutation. The hyperactivity of mutant Op18 is apparent in its unphosphorylated state, and this mutation also suppresses phosphorylation-inactivation of the microtubule-destabilizing activity of Op18 without any apparent effect on its phosphorylation status. Thus, although Op18 is dispensable for mitosis, the hyperactive Q18-->E mutant, or overexpressed wild-type Op18, exerts aneugenic effects that are likely to contribute to chromosomal instability in tumors.
Collapse
Affiliation(s)
- Per Holmfeldt
- Department of Molecular Biology, Umeå University, SE-901 87 Umeå, Sweden
| | | | - Sonja Stenmark
- Department of Molecular Biology, Umeå University, SE-901 87 Umeå, Sweden
| | - Martin Gullberg
- Department of Molecular Biology, Umeå University, SE-901 87 Umeå, Sweden
| |
Collapse
|
36
|
Gadea BB, Ruderman JV. Aurora B is required for mitotic chromatin-induced phosphorylation of Op18/Stathmin. Proc Natl Acad Sci U S A 2006; 103:4493-8. [PMID: 16537398 PMCID: PMC1401233 DOI: 10.1073/pnas.0600702103] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Oncoprotein 18/Stathmin (Op18) is a microtubule-destabilizing protein that is inhibited by phosphorylation in response to many types of signals. During mitosis, phosphorylation of Op18 by cdc2 is necessary but not sufficient for Op18 inhibition. The presence of mitotic chromosomes is additionally required and involves phosphorylation of Ser-16 in Xenopus Op18 (and/or Ser-63 in human). Given that Ser-16 is an excellent Aurora A (Aur-A) kinase consensus phosphorylation site and the Aurora kinase inhibitor ZM447439 (ZM) blocks phosphorylation in the activation loop of Aur-A, we asked whether either Aur-A or Aurora B (Aur-B) might regulate Op18. We find that ZM blocks the ability of mitotic chromatin to induce Op18 hyperphosphorylation in Xenopus egg extracts. Depletion of Aur-B, but not Aur-A, blocks hyperphosphorylation of Op18, and chromatin assembled in the absence of Aur-B fails to induce hyperphosphorylation. These results suggest that Aur-B, which concentrates at centromeres of metaphase chromosomes, contributes to localized regulation of Op18 during the process of spindle assembly.
Collapse
Affiliation(s)
- Bedrick B. Gadea
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115
| | - Joan V. Ruderman
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115
| |
Collapse
|
37
|
Hagl CI, Thil O, Holland-Cunz S, Faissner R, Wandschneider S, Schnölzer M, Löhr M, Schäfer KH. Proteome analysis of isolated myenteric plexus reveals significant changes in protein expression during postnatal development. Auton Neurosci 2005; 122:1-8. [PMID: 16183334 DOI: 10.1016/j.autneu.2005.06.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2005] [Revised: 06/08/2005] [Accepted: 06/08/2005] [Indexed: 10/25/2022]
Abstract
The enteric nervous system in vertebrates is the most complex part of the peripheral nervous system. Concerning chemical coding, ultrastructure and neuronal circuits, it is more similar to the central than to the peripheral nervous system. Its networks, the myenteric and submucous plexus are integrated in the gut wall. The enteric nervous system is a system of high plasticity, which not only changes during pre- and postnatal development, but also with disease or changing dietary habits. The Aim of this study was to elucidate changes in protein expression during the first two postnatal weeks in the rat myenteric plexus. Colonic and duodenal myenteric plexus from newborn (P1) and fourteen-day old (P14) Sprague-Dawley rats was isolated following a procedure that combines enzymatic digestion and mechanical agitation. The neuronal tissue was collected and processed for two-dimensional gel electrophoresis (2-DE). The obtained 2-D gels were stained with silver for image analysis or with colloidal Coomassie for subsequent protein identification. Gels from the various samples showed a high degree of consistence concerning protein-spots found in all preparations. Nevertheless, there was a number of proteins that were clearly detected in one sample but not, or only in significantly smaller amounts in the other. Several differentially expressed proteins in the postnatal myenteric plexus were identified with MALDI-TOF mass spectrometry. Especially stathmin, polyubiquitin and heterogeneous nuclear ribonucleoprotein seem to play an important role in pre- and postnatal development. 2-DE combined with mass spectrometry can help to identify pathological relevant proteins in the enteric nervous system, and so deliver a valuable tool for the early diagnosis of also central nervous system diseases by using biopsies from the gut.
Collapse
Affiliation(s)
- Cornelia Irene Hagl
- University of Heidelberg, Clinical Faculty Mannheim, Department of Paediatric Surgery, Mannheim, Germany
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Philipova R, Larman MG, Leckie CP, Harrison PK, Groigno L, Whitaker M. Inhibiting MAP kinase activity prevents calcium transients and mitosis entry in early sea urchin embryos. J Biol Chem 2005; 280:24957-67. [PMID: 15843380 PMCID: PMC3292879 DOI: 10.1074/jbc.m414437200] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A transient calcium increase triggers nuclear envelope breakdown (mitosis entry) in sea urchin embryos. Cdk1/cyclin B kinase activation is also known to be required for mitosis entry. More recently, MAP kinase activity has also been shown to increase during mitosis. In sea urchin embryos, both kinases show a similar activation profile, peaking at the time of mitosis entry. We tested whether the activity of both kinases is required for mitosis entry and whether either kinase controls mitotic calcium signals. We found that reducing the activity of either mitotic kinase prevents nuclear envelope breakdown, despite the presence of a calcium transient, when cdk1/cyclin B kinase activity is alone inhibited. When MAP kinase activity alone was inhibited, the calcium signal was absent, suggesting that MAP kinase activity is required to generate the calcium transient that triggers nuclear envelope breakdown. However, increasing intracellular free calcium by microinjection of calcium buffers or InsP(3) while MAP kinase was inhibited did not itself induce nuclear envelope breakdown, indicating that additional MAP kinase-regulated events are necessary. After MAP kinase inhibition early in the cell cycle, the early events of the cell cycle (pronuclear migration/fusion and DNA synthesis) were unaffected, but chromosome condensation and spindle assembly are prevented. These data indicate that in sea urchin embryos, MAP kinase activity is part of a signaling complex alongside two components previously shown to be essential for entry into mitosis: the calcium transient and the increase in cdk1/cyclinB kinase activity.
Collapse
Affiliation(s)
- Rada Philipova
- Institute of Cell and Molecular Biosciences, Faculty of Medical Sciences, University of Newcastle upon Tyne, NE2 4HH, UK
| | - Mark G. Larman
- Institute of Cell and Molecular Biosciences, Faculty of Medical Sciences, University of Newcastle upon Tyne, NE2 4HH, UK
| | - Calum P. Leckie
- Institute of Cell and Molecular Biosciences, Faculty of Medical Sciences, University of Newcastle upon Tyne, NE2 4HH, UK
| | - Patrick K. Harrison
- Institute of Cell and Molecular Biosciences, Faculty of Medical Sciences, University of Newcastle upon Tyne, NE2 4HH, UK
| | - Laurence Groigno
- Institute of Cell and Molecular Biosciences, Faculty of Medical Sciences, University of Newcastle upon Tyne, NE2 4HH, UK
| | - Michael Whitaker
- Institute of Cell and Molecular Biosciences, Faculty of Medical Sciences, University of Newcastle upon Tyne, NE2 4HH, UK
| |
Collapse
|
39
|
Giampietro C, Luzzati F, Gambarotta G, Giacobini P, Boda E, Fasolo A, Perroteau I. Stathmin expression modulates migratory properties of GN-11 neurons in vitro. Endocrinology 2005; 146:1825-34. [PMID: 15625246 DOI: 10.1210/en.2004-0972] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Expression of stathmin, a microtubule-associated cytoplasmic protein, prominently localized in neuroproliferative zones and neuronal migration pathways in brain, was investigated in the GnRH neuroendocrine system in vivo and the function was analyzed using an in vitro approach. Here we present novel data demonstrating that GnRH migrating neurons in nasal regions and basal forebrain areas of mouse embryos express stathmin protein. In addition, this expression pattern is dependent on location, as GnRH neurons reaching the hypothalamus are stathmin negative. Immortalized GN-11 cells, which retain many characteristics of migrating GnRH neurons, strongly express stathmin mRNA and protein. The role of stathmin in GnRH migratory properties was evaluated using GN-11 cell line. We up-regulated [stathmin-transfected clones (STMN)+] and down-regulated (STMN-) the expression of stathmin in GN-11 cells, and we investigated changes in cell morphology and motility in vitro. Cells overexpressing stathmin assume a spindle-shaped morphology and their proliferation, as well as their motility, is higher with respect to parental cells. Furthermore, they do not aggregate and express low levels of cadherins compared with control cells. STMN- GN-11 cells are endowed with multipolar processes, and they show a decreased motility and express high levels of cadherin protein. Our findings suggest that stathmin plays a permissive role in GnRH cell motility, possibly via modulation of cadherins expression.
Collapse
Affiliation(s)
- Costanza Giampietro
- Department of Human and Animal Biology, University of Torino, Via Accademia Albertina 13, 10123 Torino, Italy
| | | | | | | | | | | | | |
Collapse
|
40
|
Maiato H, Sampaio P, Sunkel CE. Microtubule-associated proteins and their essential roles during mitosis. ACTA ACUST UNITED AC 2005; 241:53-153. [PMID: 15548419 DOI: 10.1016/s0074-7696(04)41002-x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Microtubules play essential roles during mitosis, including chromosome capture, congression, and segregation. In addition, microtubules are also required for successful cytokinesis. At the heart of these processes is the ability of microtubules to do work, a property that derives from their intrinsic dynamic behavior. However, if microtubule dynamics were not properly regulated, it is certain that microtubules alone could not accomplish any of these tasks. In vivo, the regulation of microtubule dynamics is the responsibility of microtubule-associated proteins. Among these, we can distinguish several classes according to their function: (1) promotion and stabilization of microtubule polymerization, (2) destabilization or severance of microtubules, (3) functioning as linkers between various structures, or (4) motility-related functions. Here we discuss how the various properties of microtubule-associated proteins can be used to assemble an efficient mitotic apparatus capable of ensuring the bona fide transmission of the genetic information in animal cells.
Collapse
Affiliation(s)
- Hélder Maiato
- Instituto de Biologia Molecular e Celular, Universidade do Porto, 4150-180 Porto, Portugal
| | | | | |
Collapse
|
41
|
Abstract
Stathmin is the founding member of a family of proteins that play critically important roles in the regulation of the microtubule cytoskeleton. Stathmin regulates microtubule dynamics by promoting depolymerization of microtubules and/or preventing polymerization of tubulin heterodimers. Upon entry into mitosis, microtubules polymerize to form the mitotic spindle, a cellular structure that is essential for accurate chromosome segregation and cell division. The microtubule-depolymerizing activity of stathmin is switched off at the onset of mitosis by phosphorylation to allow microtubule polymerization and assembly of the mitotic spindle. Phosphorylated stathmin has to be reactivated by dephosphorylation before cells exit mitosis and enter a new interphase. Interfering with stathmin function by forced expression or inhibition of expression results in reduced cellular proliferation and accumulation of cells in the G2/M phases of the cell cycle. Forced expression of stathmin leads to abnormalities in or a total lack of mitotic spindle assembly and arrest of cells in the early stages of mitosis. On the other hand, inhibition of stathmin expression leads to accumulation of cells in the G2/M phases and is associated with severe mitotic spindle abnormalities and difficulty in the exit from mitosis. Thus, stathmin is critically important not only for the formation of a normal mitotic spindle upon entry into mitosis but also for the regulation of the function of the mitotic spindle in the later stages of mitosis and for the timely exit from mitosis. In this review, we summarize the early studies that led to the identification of the important mitotic function of stathmin and discuss the present understanding of its role in the regulation of microtubules dynamics during cell-cycle progression. We also describe briefly other less mature avenues of investigation which suggest that stathmin may participate in other important biological functions and speculate about the future directions that research in this rapidly developing field may take.
Collapse
Affiliation(s)
- Camelia Iancu Rubin
- Division of Hematology/Oncology, Mount Sinai School of Medicine, New York, New York 10029, USA
| | | |
Collapse
|
42
|
Kim YU, Koo KT, Choi JS, Jin YH, Yim H, Oh YT, Lee SK. Analysis of Cyclin-Dependent Kinase 2-Regulated Phosphorylation of Stathmin in Etoposide-Induced Apoptotic HeLa Cells by Two-Dimensional Electrophoresis and Mass Spectrometry. ACTA ACUST UNITED AC 2005. [DOI: 10.1248/jhs.51.224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yong-ung Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University
| | - Kyo-Tan Koo
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University
| | - Joon-Seok Choi
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University
| | - Ying-Hua Jin
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University
| | - Hyungshin Yim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University
| | - You-Take Oh
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University
| | - Seung Ki Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University
| |
Collapse
|
43
|
Curmi PA, Gavet O, Charbaut E, Ozon S, Lachkar-Colmerauer S, Manceau V, Siavoshian S, Maucuer A, Sobel A. Stathmin and its phosphoprotein family: general properties, biochemical and functional interaction with tubulin. Cell Struct Funct 2004; 24:345-57. [PMID: 15216892 DOI: 10.1247/csf.24.345] [Citation(s) in RCA: 156] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Stathmin, also referred to as Op18, is a ubiquitous cytosolic phosphoprotein, proposed to be a small regulatory protein and a relay integrating diverse intracellular signaling pathways involved in the control of cell proliferation, differentiation and activities. It interacts with several putative downstream target and/or partner proteins. One major action of stathmin is to interfere with microtubule dynamics, by inhibiting the formation of microtubules and/or favoring their depolymerization. Stathmin (S) interacts directly with soluble tubulin (T), which results in the formation of a T2S complex which sequesters free tubulin and therefore impedes microtubule formation. However, it has been also proposed that stathmin's action on microtubules might result from the direct promotion of catastrophes, which is still controversial. Phosphorylation of stathmin regulates its biological actions: it reduces its affinity for tubulin and hence its action on microtubule dynamics, which allows for example progression of cells through mitosis. Stathmin is also the generic element of a protein family including the neural proteins SCG10, SCLIP and RB3/RB3'/RB3". Interestingly, the stathmin-like domains of these proteins also possess a tubulin binding activity in vitro. In vivo, the transient expression of neural phosphoproteins of the stathmin family leads to their localization at Golgi membranes and, as previously described for stathmin and SCG10, to the depolymerization of interphasic microtubules. Altogether, the same mechanism for microtubule destabilization, that implies tubulin sequestration, is a common feature likely involved in the specific biological roles of each member of the stathmin family.
Collapse
Affiliation(s)
- P A Curmi
- INSERM U440, Institut du Fer à Moulin, 17 rue du Fer à Moulin, 75005, Paris, France
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Zahedi K, Wang Z, Barone S, Tehrani K, Yokota N, Petrovic S, Rabb H, Soleimani M. Identification of stathmin as a novel marker of cell proliferation in the recovery phase of acute ischemic renal failure. Am J Physiol Cell Physiol 2004; 286:C1203-11. [PMID: 15075220 DOI: 10.1152/ajpcell.00432.2003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ischemic renal injury can be classified into the initiation and extension phase followed by the recovery phase. The recovery phase is characterized by increased dedifferentiated and mitotic cells in the damaged tubules. Suppression subtractive hybridization was performed by using RNA from normal and ischemic kidneys to identify the genes involved in the physiological response to ischemia-reperfusion injury (IRI). The expression of stathmin mRNA increased by fourfold at 24 h of reperfusion. The stathmin mRNA did not increase in sodium-depleted animals or in animals with active, persistent injury secondary to cis-platinum. Immunofluorescent labeling demonstrated that the expression of stathmin increased dramatically at 48 h of reperfusion. Labeling with antibodies to stathmin and proliferating cell nuclear antigen (PCNA) indicates that the expression of stathmin was induced before the upregulation of PCNA and that all PCNA-positive cells expressed stathmin. Double immunofluorescent labeling demonstrated the colocalization of stathmin with vimentin, a marker of dedifferentiated cells. Stathmin expression was also significantly enhanced in acute tubular necrosis in humans. On the basis of its induction profile in IRI, the data indicating its enhanced expression in proliferating cells and regenerating organs, we propose that stathmin is a marker of dedifferentiated, mitotically active epithelial cells that may contribute to tubular regeneration and could prove useful in distinguishing the injury phase from recovery phase in IRI.
Collapse
Affiliation(s)
- Kamyar Zahedi
- Division of Nephrology and Hypertension, Children's Hospital Research Foundation, 3333 Burnet Ave., Cincinnati, OH 45229-3039, USA.
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Misek DE, Chang CL, Kuick R, Hinderer R, Giordano TJ, Beer DG, Hanash SM. Transforming properties of a Q18-->E mutation of the microtubule regulator Op18. Cancer Cell 2002; 2:217-28. [PMID: 12242154 DOI: 10.1016/s1535-6108(02)00124-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We have identified a somatic mutation in Op18 in a human esophageal adenocarcinoma. The mutant form of Op18 (M-Op18) was cloned and sequenced, revealing a substitution of a G for C at nucleotide 155, which results in a Q18-->E substitution in the protein. M-Op18 cDNA was expressed in NIH/3T3 cells, which resulted in foci formation and tumor growth in immunodeficient mice. Cell cycle analysis of M-Op18-expressing cells revealed a doubling in the percentage of cells in G2/M relative to cells overexpressing wild-type Op18, a decrease in M-Op18-specific phosphorylation, and alterations in tubulin ultrastructure in M-Op18-expressing cells. These results suggest that the somatic mutation identified in Op18 has profound effects on cell homeostasis that may lead to tumorigenicity.
Collapse
Affiliation(s)
- David E Misek
- Department of Pediatrics, University of Michigan, Ann Arbor, MI 48109, USA.
| | | | | | | | | | | | | |
Collapse
|
46
|
Gavet O, El Messari S, Ozon S, Sobel A. Regulation and subcellular localization of the microtubule-destabilizing stathmin family phosphoproteins in cortical neurons. J Neurosci Res 2002; 68:535-50. [PMID: 12111843 DOI: 10.1002/jnr.10234] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Stathmin is a ubiquitous cytosolic phosphoprotein, preferentially expressed in the nervous system, and the generic element of a protein family that includes the neural-specific proteins SCG10, SCLIP, and RB3 and its splice variants, RB3' and RB3". All phosphoproteins of the family share with stathmin its tubulin binding and microtubule (MT)-destabilizing activities. To understand better the specific roles of these proteins in neuronal cells, we performed a comparative study of their expression, regulation, and intracellular distribution in embryonic cortical neurons in culture. We found that stathmin is highly expressed ( approximately 0.25% of total proteins) and uniformly present in the various neuronal compartments (cell body, dendrites, axon, growth cones). It appeared mainly unphosphorylated or weakly phosphorylated on one site, and antisera to specific phosphorylated sites (serines 16, 25, or 38) did not reveal a differential regulation of its phosphorylation among neuronal cell compartments. However, they revealed a subpopulation of cells in which stathmin was highly phosphorylated on serine 16, possibly by CaM kinase II also active in a similar subpopulation. The other proteins of the stathmin family are expressed about 100-fold less than stathmin in partially distinct neuronal populations, RB3 being detected in only about 20% of neurons in culture. In contrast to stathmin, they are each mostly concentrated at the Golgi apparatus and are also present along dendrites and axons, including growth cones. Altogether, our results suggest that the different members of the stathmin family have complementary, at least partially distinct functions in neuronal cell regulation, in particular in relation to MT dynamics.
Collapse
Affiliation(s)
- Olivier Gavet
- INSERM U440, Institut du Fer à Moulin, Paris, France
| | | | | | | |
Collapse
|
47
|
Cassimeris L, Spittle C. Regulation of microtubule-associated proteins. INTERNATIONAL REVIEW OF CYTOLOGY 2002; 210:163-226. [PMID: 11580206 DOI: 10.1016/s0074-7696(01)10006-9] [Citation(s) in RCA: 158] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Microtubule-associated proteins (MAPs) function to regulate the assembly dynamics and organization of microtubule polymers. Upstream regulation of MAP activities is the major mechanism used by cells to modify and control microtubule assembly and organization. This review summarizes the functional activities of MAPs found in animal cells and discusses how these MAPs are regulated. Mechanisms controlling gene expression, isoform-specific expression, protein localization, phosphorylation, and degradation are discussed. Additional regulatory mechanisms include synergy or competition between MAPs and the activities of cofactors or binding partners. For each MAP it is likely that regulation in vivo reflects a composite of multiple regulatory mechanisms.
Collapse
Affiliation(s)
- L Cassimeris
- Department of Biological Sciences, Lehigh University Bethlehem, Pennsylvania 18015, USA
| | | |
Collapse
|
48
|
Nagasaka Y, Fijimoto M, Arai H, Nakamura K. Inhibition of heat-induced phosphorylation of stathmin by the bioflavonoid quercetin. Electrophoresis 2002; 23:670-3. [PMID: 11870780 DOI: 10.1002/1522-2683(200202)23:4<670::aid-elps670>3.0.co;2-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Effects of quercetin on heat-induced phosphorylation of stathmin in JURKAT cells were examined. Two-dimensional electrophoresis of stathmin showed that heat shock increases mono- and diphosphorylation of stathmin. Monophosphorylation induced by heat shock was inhibited by the presence of 0.1 mM quercetin, but not by the presence of 0.1 microM staurosporine. Immunoblot analysis of phosphorylated stathmin showed that heat-induced phosphorylation at Ser-38 was inhibited by quercetin but not by staurosporine. Quercetin enhanced heat-induced tyrosine phosphorylation of MAP kinase. These observations indicate that quercetin inhibits heat-induced phosphorylation at Ser-38 of stathmin but mitogen-activated protein (MAP) kinase is not involved in its phosphorylation.
Collapse
Affiliation(s)
- Yuji Nagasaka
- Department of Human Nutrition, Yamaguchi Prefectural University, Yamaguchi, Japan
| | | | | | | |
Collapse
|
49
|
Abstract
The past several years have seen major advances in our understanding of the mechanisms of microtubule destabilization by oncoprotein18/stathmin (Op18/stathmin) and related proteins. New structural information has clearly shown how members of the Op18/stathmin protein family bind tubulin dimers and suggests models for how these proteins stimulate catastrophe, the transition from microtubule growth to shortening. Regulation of Op18/stathmin by phosphorylation continues to capture much attention. Studies suggest that phosphorylation occurs in a localized fashion, resulting in decreased microtubule destabilizing activity near chromatin or microtubule polymer. A spatial gradient of inactive Op18/stathmin associated with chromatin or microtubules could contribute significantly to mitotic spindle assembly.
Collapse
Affiliation(s)
- Lynne Cassimeris
- Department of Biological Sciences, 111 Research Drive, Lehigh University, Bethlehem, PA18015, USA.
| |
Collapse
|
50
|
Liedtke W, Leman EE, Fyffe REW, Raine CS, Schubart UK. Stathmin-deficient mice develop an age-dependent axonopathy of the central and peripheral nervous systems. THE AMERICAN JOURNAL OF PATHOLOGY 2002; 160:469-80. [PMID: 11839567 PMCID: PMC1850667 DOI: 10.1016/s0002-9440(10)64866-3] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/17/2001] [Indexed: 11/30/2022]
Abstract
Stathmin is a cytosolic protein that binds tubulin and destabilizes cellular microtubules, an activity regulated by phosphorylation. Despite its abundant expression in the developing mammalian nervous system and despite its high degree of evolutionary conservation, stathmin-deficient mice do not exhibit a developmental phenotype.(1) Here we report that aging stathmin(-/-) mice develop an axonopathy of the central and peripheral nervous systems. The pathological hallmark of the early axonal lesions was a highly irregular axoplasm predominantly affecting large, heavily myelinated axons in motor tracts. As the lesions progressed, degeneration of axons, dysmyelination, and an unusual glial reaction were observed. At the functional level, electrophysiology recordings demonstrated a significant reduction of motor nerve conduction velocity in stathmin(-/-) mice. At the molecular level, increased gene expression of SCG 10-like protein, a stathmin-related gene with microtubule destabilizing activity, was detected in the central nervous system of aging stathmin(-/-) mice. Together, these findings suggest that stathmin plays an essential role in the maintenance of axonal integrity.
Collapse
Affiliation(s)
- Wolfgang Liedtke
- Department of Pathology, Albert Einstein College of Medicine, Bronx, New York.
| | | | | | | | | |
Collapse
|