1
|
Budayeva HG, Sengupta-Ghosh A, Phu L, Moffat JG, Ayalon G, Kirkpatrick DS. Phosphoproteome Profiling of the Receptor Tyrosine Kinase MuSK Identifies Tyrosine Phosphorylation of Rab GTPases. Mol Cell Proteomics 2022; 21:100221. [PMID: 35227894 PMCID: PMC8972003 DOI: 10.1016/j.mcpro.2022.100221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 11/16/2022] Open
Abstract
Muscle-specific receptor tyrosine kinase (MuSK) agonist antibodies were developed 2 decades ago to explore the benefits of receptor activation at the neuromuscular junction. Unlike agrin, the endogenous agonist of MuSK, agonist antibodies function independently of its coreceptor low-density lipoprotein receptor–related protein 4 to delay the onset of muscle denervation in mouse models of ALS. Here, we performed dose–response and time-course experiments on myotubes to systematically compare site-specific phosphorylation downstream of each agonist. Remarkably, both agonists elicited similar intracellular responses at known and newly identified MuSK signaling components. Among these was inducible tyrosine phosphorylation of multiple Rab GTPases that was blocked by MuSK inhibition. Importantly, mutation of this site in Rab10 disrupts association with its effector proteins, molecule interacting with CasL 1/3. Together, these data provide in-depth characterization of MuSK signaling, describe two novel MuSK inhibitors, and expose phosphorylation of Rab GTPases downstream of receptor tyrosine kinase activation in myotubes. Different agonists of muscle-specific kinase (MuSK) elicit similar phosphoprofiles. MuSK activation induces tyrosine phosphorylation of several Rab GTPases. MuSK inhibitors diminish receptor signaling, including phosphorylation on Rab10 Y6. Mutation of Rab10 Y6 disrupts its association with Mical adaptor proteins.
Collapse
Affiliation(s)
- Hanna G Budayeva
- Microchemistry, Proteomics, and Lipidomics Department, Genentech, Inc, South San Francisco, California, USA.
| | | | - Lilian Phu
- Microchemistry, Proteomics, and Lipidomics Department, Genentech, Inc, South San Francisco, California, USA
| | - John G Moffat
- Biochemical and Cellular Pharmacology and Computational Drug Design, Genentech, Inc, South San Francisco, California, USA
| | - Gai Ayalon
- Neuroscience Department, Genentech, Inc, South San Francisco, California, USA
| | - Donald S Kirkpatrick
- Microchemistry, Proteomics, and Lipidomics Department, Genentech, Inc, South San Francisco, California, USA.
| |
Collapse
|
2
|
Palchesko RN, Szymanski JM, Sahu A, Feinberg AW. Shrink Wrapping Cells in a Defined Extracellular Matrix to Modulate the Chemo-Mechanical Microenvironment. Cell Mol Bioeng 2014; 7:355-368. [PMID: 25530816 DOI: 10.1007/s12195-014-0348-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Cell-matrix interactions are important for the physical integration of cells into tissues and the function of insoluble, mechanosensitive signaling networks. Studying these interactions in vitro can be difficult because the extracellular matrix (ECM) proteins that adsorb to in vitro cell culture surfaces do not fully recapitulate the ECM-dense basement membranes to which cells such as cardiomyocytes and endothelial cells adhere to in vivo. Towards addressing this limitation, we have developed a surface-initiated assembly process to engineer ECM proteins into nanostructured, microscale sheets that can be shrink wrapped around single cells and small cell ensembles to provide a functional and instructive matrix niche. Unlike current cell encapsulation technology using alginate, fibrin or other hydrogels, our engineered ECM is similar in density and thickness to native basal lamina and can be tailored in structure and composition using the proteins fibronectin, laminin, fibrinogen, and/or collagen type IV. A range of cells including C2C12 myoblasts, bovine corneal endothelial cells and cardiomyocytes survive the shrink wrapping process with high viability. Further, we demonstrate that, compared to non-encapsulated controls, the engineered ECM modulates cytoskeletal structure, stability of cell-matrix adhesions and cell behavior in 2D and 3D microenvironments.
Collapse
Affiliation(s)
- Rachelle N Palchesko
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - John M Szymanski
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Amrita Sahu
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Adam W Feinberg
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA ; Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| |
Collapse
|
3
|
Grassot V, Da Silva A, Saliba J, Maftah A, Dupuy F, Petit JM. Highlights of glycosylation and adhesion related genes involved in myogenesis. BMC Genomics 2014; 15:621. [PMID: 25051993 PMCID: PMC4223822 DOI: 10.1186/1471-2164-15-621] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 07/14/2014] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Myogenesis is initiated by myoblast differentiation and fusion to form myotubes and muscle fibres. A population of myoblasts, known as satellite cells, is responsible for post-natal growth of muscle and for its regeneration. This differentiation requires many changes in cell behaviour and its surrounding environment. These modifications are tightly regulated over time and can be characterized through the study of changes in gene expression associated with this process. During the initial myogenesis steps, using the myoblast cell line C2C12 as a model, Janot et al. (2009) showed significant variations in expression for genes involved in pathways of glycolipid synthesis. In this study we used murine satellite cells (MSC) and their ability to differentiate into myotubes or early fat storage cells to select glycosylation related genes whose variation of expression is myogenesis specific. RESULTS The comparison of variant genes in both MSC differentiation pathways identified 67 genes associated with myogenesis. Comparison with data obtained for C2C12 revealed that only 14 genes had similar expression profiles in both cell types and that 17 genes were specifically regulated in MSC. Results were validated statistically by without a priori clustering. Classification according to protein function encoded by these 31 genes showed that the main regulated cellular processes during this differentiation were (i) remodeling of the extracellular matrix, particularly, sulfated structures, (ii) down-regulation of O-mannosyl glycan biosynthesis, and (iii) an increase in adhesion protein expression. A functional study was performed on Itga11 and Chst5 encoding two highly up-regulated proteins. The inactivation of Chst5 by specific shRNA delayed the fusion of MSC. By contrast, the inactivation of Itga11 by specific shRNA dramatically decreased the fusion ability of MSC. This result was confirmed by neutralization of Itga11 product by specific antibodies. CONCLUSIONS Our screening method detected 31 genes specific for myogenic differentiation out of the 383 genes studied. According to their function, interaction networks of the products of these selected genes converged to cell fusion. Functional studies on Itga11 and Chst5 demonstrated the robustness of this screening.
Collapse
Affiliation(s)
- Vincent Grassot
- INRA, UMR 1061 Unité de Génétique Moléculaire Animale, Université de Limoges, Faculté des Sciences et Techniques, 123 Avenue A. Thomas, Limoges 87060, France
| | - Anne Da Silva
- INRA, UMR 1061 Unité de Génétique Moléculaire Animale, Université de Limoges, Faculté des Sciences et Techniques, 123 Avenue A. Thomas, Limoges 87060, France
| | - James Saliba
- INRA, UMR 1061 Unité de Génétique Moléculaire Animale, Université de Limoges, Faculté des Sciences et Techniques, 123 Avenue A. Thomas, Limoges 87060, France
| | - Abderrahman Maftah
- INRA, UMR 1061 Unité de Génétique Moléculaire Animale, Université de Limoges, Faculté des Sciences et Techniques, 123 Avenue A. Thomas, Limoges 87060, France
| | - Fabrice Dupuy
- INRA, UMR 1061 Unité de Génétique Moléculaire Animale, Université de Limoges, Faculté des Sciences et Techniques, 123 Avenue A. Thomas, Limoges 87060, France
| | - Jean-Michel Petit
- INRA, UMR 1061 Unité de Génétique Moléculaire Animale, Université de Limoges, Faculté des Sciences et Techniques, 123 Avenue A. Thomas, Limoges 87060, France
| |
Collapse
|
4
|
Tiong SH, Looi CY, Hazni H, Arya A, Paydar M, Wong WF, Cheah SC, Mustafa MR, Awang K. Antidiabetic and antioxidant properties of alkaloids from Catharanthus roseus (L.) G. Don. Molecules 2013; 18:9770-84. [PMID: 23955322 PMCID: PMC6270616 DOI: 10.3390/molecules18089770] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/02/2013] [Accepted: 08/09/2013] [Indexed: 11/23/2022] Open
Abstract
Catharanthus roseus (L.) G. Don is a herbal plant traditionally used by local populations in India, South Africa, China and Malaysia to treat diabetes. The present study reports the in vitro antioxidant and antidiabetic activities of the major alkaloids isolated from Catharanthus roseus (L.) G. Don leaves extract. Four alkaloids--vindoline I, vindolidine II, vindolicine III and vindolinine IV--were isolated and identified from the dichloromethane extract (DE) of this plant's leaves. DE and compounds I-III were not cytotoxic towards pancreatic β-TC6 cells at the highest dosage tested (25.0 µg/mL). All four alkaloids induced relatively high glucose uptake in pancreatic β-TC6 or myoblast C2C12 cells, with III showing the highest activity. In addition, compounds II-IV demonstrated good protein tyrosine phosphatase-1B (PTP-1B) inhibition activity, implying their therapeutic potential against type 2 diabetes. III showed the highest antioxidant potential in ORAC and DPPH assays and it also alleviated H₂O₂-induced oxidative damage in β-TC6 cells at 12.5 µg/mL and 25.0 µg/mL.
Collapse
Affiliation(s)
- Soon Huat Tiong
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails: (S.H.T.); (H.H.)
| | - Chung Yeng Looi
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails: (C.Y.L.); (A.A.); (M.P.); (M.R.M.)
| | - Hazrina Hazni
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails: (S.H.T.); (H.H.)
| | - Aditya Arya
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails: (C.Y.L.); (A.A.); (M.P.); (M.R.M.)
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Mohammadjavad Paydar
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails: (C.Y.L.); (A.A.); (M.P.); (M.R.M.)
| | - Won Fen Wong
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mail:
| | - Shiau-Chuen Cheah
- Faculty of Medicine and Health Sciences, UCSI University, No. 1, Jalan Menara Gading, UCSI Heights, Cheras 56000 Kuala Lumpur, Malaysia; E-Mail:
| | - Mohd Rais Mustafa
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails: (C.Y.L.); (A.A.); (M.P.); (M.R.M.)
| | - Khalijah Awang
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails: (S.H.T.); (H.H.)
| |
Collapse
|
5
|
Gorelick-Feldman J, Cohick W, Raskin I. Ecdysteroids elicit a rapid Ca2+ flux leading to Akt activation and increased protein synthesis in skeletal muscle cells. Steroids 2010; 75:632-7. [PMID: 20363237 PMCID: PMC3815456 DOI: 10.1016/j.steroids.2010.03.008] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2009] [Revised: 03/09/2010] [Accepted: 03/26/2010] [Indexed: 10/19/2022]
Abstract
Phytoecdysteroids, structurally similar to insect molting hormones, produce a range of effects in mammals, including increasing growth and physical performance. In skeletal muscle cells, phytoecdysteroids increase protein synthesis. In this study we show that in a mouse skeletal muscle cell line, C(2)C(12), 20-hydroxyecdysone (20HE), a common phytoecdysteroid in both insects and plants, elicited a rapid elevation in intracellular calcium, followed by sustained Akt activation and increased protein synthesis. The effect was inhibited by a G-protein coupled receptor (GPCR) inhibitor, a phospholipase C (PLC) inhibitor, and a phosphoinositide kinase-3 (PI3K) inhibitor.
Collapse
|
6
|
Cowan CM, Jiang X, Hsu T, Soo C, Zhang B, Wang JZ, Kuroda S, Wu B, Zhang Z, Zhang X, Ting K. Synergistic effects of Nell-1 and BMP-2 on the osteogenic differentiation of myoblasts. J Bone Miner Res 2007; 22:918-30. [PMID: 17352654 PMCID: PMC2866074 DOI: 10.1359/jbmr.070312] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
UNLABELLED Osteogenesis is synergistically enhanced by the combined effect of complimentary factors. This study showed that Nell-1 and BMP-2 synergistically enhanced osteogenic differentiation of myoblasts and phosphorylated the JNK MAPK pathway. The findings are important because of the osteochondral specificity of Nell-1 signaling and the potential therapeutic effects of coordinated BMP-2 and Nell-1 delivery. INTRODUCTION BMPs play an important role in the migration and proliferation of mesenchymal cells and have a unique ability to alter the differentiation of mesenchymal cells toward chondrogenic and osteogenic lineages. Signaling upstream of Cbfa1/Runx2, BMPs effects are not limited to cells of the osteoblast lineage. Thus, additional osteoblast-specific factors that could synergize with BMP-2 would be advantageous for bone regeneration procedures. NELL-1 (NEL-like molecule-1; NEL [a protein strongly expressed in neural tissue encoding epidermal growth factor like domain]) is a novel growth factor believed to preferentially target cells committed to the osteochondral lineage. MATERIALS AND METHODS C2C12 myoblasts were transduced with AdLacZ, AdNell-1, AdBMP-2, or AdNell-1+AdBMP-2 overexpression viruses. Effects were studied by cell morphology, alkaline phosphatase activity, osteopontin production, and MAPK signaling. Additionally, in a nude mouse model, viruses were injected into leg muscles, and new bone formation was examined after 2 and 8 wk. RESULTS C2C12 myoblasts co-transduced with AdNell-1+AdBMP-2 showed a synergistic effect on osteogenic differentiation as detected by alkaline phosphatase activity and osteopontin production. Nell-1 stimulation on AdNell-1 + AdBMP-2 preconditioned C2C12 cells revealed significant activation of the non-BMP-2 associated c-Jun N-terminal kinase (JNK) MAPK signaling pathway, but not the p38 or extracellular signal-regulated kinase (ERK1/2) MAPK pathways. Importantly Nell-1 alone did not induce osteogenic differentiation of myoblasts. In a nude mouse model, injection of AdNell-1 alone stimulated no bone formation within muscle; however, injection of AdNell-1+AdBMP-2 stimulated a synergistic increase in bone formation compared with AdBMP-2 alone. CONCLUSIONS These findings are important because of the confirmed osteochondral specificity of Nell-1 signaling and the potential therapeutic effects of enhanced BMP-2 action with coordinated Nell-1 delivery.
Collapse
Affiliation(s)
- Catherine M Cowan
- Department of Bioengineering, University of California, Los Angeles, California, USA
- Dental and Craniofacial Research Institute, University of California, Los Angeles, California, USA
| | - Xinquan Jiang
- Oral Bioengineering Laboratory, Shanghai Research Institute of Stomatology, Ninth People’s Hospital affiliated to Shanghai Jiaotong University Medical School, Shanghai, China
| | - Tiffany Hsu
- Dental and Craniofacial Research Institute, University of California, Los Angeles, California, USA
| | - Chia Soo
- Department of Plastic and Reconstructive Surgery, University of Southern California, Los Angeles, California, USA
| | - Beiji Zhang
- Dental and Craniofacial Research Institute, University of California, Los Angeles, California, USA
| | - Joyce Z Wang
- Dental and Craniofacial Research Institute, University of California, Los Angeles, California, USA
| | - Shun’ichi Kuroda
- Department of Structural Molecular Biology, Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, Japan
| | - Benjamin Wu
- Department of Bioengineering, University of California, Los Angeles, California, USA
- Dental and Craniofacial Research Institute, University of California, Los Angeles, California, USA
- Department of Material Science, University of California, Los Angeles, California, USA
| | - Zhiyuan Zhang
- Department of Oral Maxillofacial Surgery, Ninth People’s Hospital affiliated to Shanghai Jiaotong University Medical School, Shanghai, China
| | - Xinli Zhang
- Dental and Craniofacial Research Institute, University of California, Los Angeles, California, USA
| | - Kang Ting
- Dental and Craniofacial Research Institute, University of California, Los Angeles, California, USA
- Section of Orthodontics, School of Dentistry, University of California, Los Angeles, California, USA
| |
Collapse
|
7
|
Abstract
Zinc finger homeodomain enhancer-binding protein (Zfhep/Zfhx1a) is a transcription factor essential for immune system development, skeletal patterning, and life. Regulation of the interleukin-2 gene in T cells has been suggested to depend on post-translational processing of Zfhep, however, no modifications of Zfhep are known. Here we demonstrate that Zfhep is present in both hyperphosphorylated and hypophosphorylated forms. Western blot analysis demonstrates two forms of Zfhep with different mobilities. Differences in phosphorylation are sufficient to explain the difference in mobilities. Zfhep is primarily phosphorylated on Ser and Thr residues since PP2A dephosphorylates the slower mobility band. Treatment of nuclear extract with O-GlcNAcase did not detect O-linked sugar. Importantly, post-translational processing is cell-specific. Doublets of Zfhep were detected in five cell lines, whereas 6 cell lines contain only, or predominantly, non-phosphorylated Zfhep, and Saos-2 cells contain predominantly the phosphorylated form. These data provide the first demonstration that Zfhep is post-translationally modified.
Collapse
Affiliation(s)
- Mary E. Costantino
- Biochemistry and Molecular Biology, University of Louisville Health Sciences Center, Louisville, KY 40292
| | - Randi P. Stearman
- Periodontics, Endodontics and Dental Hygiene, University of Louisville Health Sciences Center, Louisville, KY 40292
| | - Gregory E. Smith
- Biochemistry and Molecular Biology, University of Louisville Health Sciences Center, Louisville, KY 40292
| | - Douglas S. Darling
- Biochemistry and Molecular Biology, University of Louisville Health Sciences Center, Louisville, KY 40292
- Periodontics, Endodontics and Dental Hygiene, University of Louisville Health Sciences Center, Louisville, KY 40292
- To whom correspondence should be addressed at University of Louisville School of Dentistry 501 South Preston St., Room 315 Louisville, KY 40292, Tel: (502) 852-5508, FAX: (502) 852-1317,
| |
Collapse
|