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Yin AC, Holdcraft CJ, Brace EJ, Hellmig TJ, Basu S, Parikh S, Jachimowska K, Kalyoussef E, Roden D, Baredes S, Capitle EM, Suster DI, Shienbaum AJ, Zhao C, Zheng H, Balcaen K, Devos S, Haustraete J, Fatahzadeh M, Goldberg GS. Maackia amurensis seed lectin (MASL) and soluble human podoplanin (shPDPN) sequence analysis and effects on human oral squamous cell carcinoma (OSCC) cell migration and viability. Biochem Biophys Res Commun 2024; 710:149881. [PMID: 38583233 DOI: 10.1016/j.bbrc.2024.149881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/28/2024] [Accepted: 04/02/2024] [Indexed: 04/09/2024]
Abstract
Maackia amurensis lectins serve as research and botanical agents that bind to sialic residues on proteins. For example, M. amurensis seed lectin (MASL) targets the sialic acid modified podoplanin (PDPN) receptor to suppress arthritic chondrocyte inflammation, and inhibit tumor cell growth and motility. However, M. amurensis lectin nomenclature and composition are not clearly defined. Here, we sought to definitively characterize MASL and its effects on tumor cell behavior. We utilized SDS-PAGE and LC-MS/MS to find that M. amurensis lectins can be divided into two groups. MASL is a member of one group which is composed of subunits that form dimers, evidently mediated by a cysteine residue in the carboxy region of the protein. In contrast to MASL, members of the other group do not dimerize under nonreducing conditions. These data also indicate that MASL is composed of 4 isoforms with an identical amino acid sequence, but unique glycosylation sites. We also produced a novel recombinant soluble human PDPN receptor (shPDPN) with 17 threonine residues glycosylated with sialic acid moieties with potential to act as a ligand trap that inhibits OSCC cell growth and motility. In addition, we report here that MASL targets PDPN with very strong binding kinetics in the nanomolar range. Moreover, we confirm that MASL can inhibit the growth and motility of human oral squamous cell carcinoma (OSCC) cells that express the PDPN receptor. Taken together, these data characterize M. amurensis lectins into two major groups based on their intrinsic properties, clarify the composition of MASL and its subunit isoform sequence and glycosylation sites, define sialic acid modifications on the PDPN receptor and its ability to act as a ligand trap, quantitate MASL binding to PDPN with KD in the nanomolar range, and verify the ability of MASL to serve as a potential anticancer agent.
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Affiliation(s)
- Ariel C Yin
- Molecular Biology, Rowan Virtua SOM, Rowan University, 2 Medical Center Dr., Stratford, NJ, 08084, USA
| | - Cayla J Holdcraft
- Molecular Biology, Rowan Virtua SOM, Rowan University, 2 Medical Center Dr., Stratford, NJ, 08084, USA
| | - Eamonn J Brace
- Molecular Biology, Rowan Virtua SOM, Rowan University, 2 Medical Center Dr., Stratford, NJ, 08084, USA
| | - Tyler J Hellmig
- Molecular Biology, Rowan Virtua SOM, Rowan University, 2 Medical Center Dr., Stratford, NJ, 08084, USA
| | - Sayan Basu
- Molecular Biology, Rowan Virtua SOM, Rowan University, 2 Medical Center Dr., Stratford, NJ, 08084, USA
| | - Saumil Parikh
- Molecular Biology, Rowan Virtua SOM, Rowan University, 2 Medical Center Dr., Stratford, NJ, 08084, USA
| | - Katarzyna Jachimowska
- Molecular Biology, Rowan Virtua SOM, Rowan University, 2 Medical Center Dr., Stratford, NJ, 08084, USA
| | - Evelyne Kalyoussef
- Rutgers New Jersey Medical School, 185 S Orange Ave, Newark, NJ, 07103, USA
| | - Dylan Roden
- Rutgers New Jersey Medical School, 185 S Orange Ave, Newark, NJ, 07103, USA
| | - Soly Baredes
- Rutgers New Jersey Medical School, 185 S Orange Ave, Newark, NJ, 07103, USA
| | - Eugenio M Capitle
- Rutgers New Jersey Medical School, 185 S Orange Ave, Newark, NJ, 07103, USA
| | - David I Suster
- Rutgers New Jersey Medical School, 185 S Orange Ave, Newark, NJ, 07103, USA
| | - Alan J Shienbaum
- Keystone Pathology Associates, 781 Keystone Industrial Park Rd, Dunmore, PA, 18512, USA
| | - Caifeng Zhao
- Biological Mass Spectrometry Resources, Robert Wood Johnson Medical School, Rutgers, State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - Haiyan Zheng
- Biological Mass Spectrometry Resources, Robert Wood Johnson Medical School, Rutgers, State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - Kevin Balcaen
- VIB Protein Core, VIB, Technologiepark 71, Ghent, Belgium; VIB-UGent Center for Inflammation Research, VIB, Ghent University, Technologiepark 71, 9000, Ghent, Belgium
| | - Simon Devos
- VIB Proteomics Core, VIB, Technologiepark 75, 9000, Ghent, Belgium; VIB-UGent Center for Medical Biotechnology, VIB, Ghent University, Technologiepark 75, 9000, Ghent, Belgium; Department of Biochemistry and Microbiology, Ghent University, Technologiepark 75, 9000, Belgium
| | - Jurgen Haustraete
- VIB Protein Core, VIB, Technologiepark 71, Ghent, Belgium; VIB-UGent Center for Inflammation Research, VIB, Ghent University, Technologiepark 71, 9000, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Technologiepark 71, Ghent, Belgium
| | - Mahnaz Fatahzadeh
- Rutgers School of Dental Medicine, 110 Bergen St, Newark, NJ, 07103, USA
| | - Gary S Goldberg
- Molecular Biology, Rowan Virtua SOM, Rowan University, 2 Medical Center Dr., Stratford, NJ, 08084, USA.
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Retzbach EP, Sheehan SA, Krishnan H, Zheng H, Zhao C, Goldberg GS. Independent effects of Src kinase and podoplanin on anchorage independent cell growth and migration. Mol Carcinog 2022; 61:677-689. [PMID: 35472679 PMCID: PMC9233000 DOI: 10.1002/mc.23410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 01/19/2022] [Accepted: 01/27/2022] [Indexed: 11/07/2022]
Abstract
The Src tyrosine kinase is a strong tumor promotor. Over a century of research has elucidated fundamental mechanisms that drive its oncogenic potential. Src phosphorylates effector proteins to promote hallmarks of tumor progression. For example, Src associates with the Cas focal adhesion adaptor protein to promote anchorage independent cell growth. In addition, Src phosphorylates Cas to induce Pdpn expression to promote cell migration. Pdpn is a transmembrane receptor that can independently increase cell migration in the absence of oncogenic Src kinase activity. However, to our knowledge, effects of Src kinase activity on anchorage independent cell growth and migration have not been examined in the absence of Pdpn expression. Here, we analyzed the effects of an inducible Src kinase construct in knockout cells with and without exogenous Pdpn expression on cell morphology migration and anchorage independent growth. We report that Src promoted anchorage independent cell growth in the absence of Pdpn expression. In contrast, Src was not able to promote cell migration in the absence of Pdpn expression. In addition, continued Src kinase activity was required for cells to assume a transformed morphology since cells reverted to a nontransformed morphology upon cessation of Src kinase activity. We also used phosphoproteomic analysis to identify 28 proteins that are phosphorylated in Src transformed cells in a Pdpn dependent manner. Taken together, these data indicate that Src utilizes Pdpn to promote transformed cell growth and motility in complementary, but parallel, as opposed to serial, pathways.
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Affiliation(s)
- Edward P. Retzbach
- Department of Molecular Biology, And Graduate School of Biomedical Sciences, School of Osteopathic Medicine, Rowan University, Stratford, NJ, 08084, USA
| | - Stephanie A. Sheehan
- Department of Molecular Biology, And Graduate School of Biomedical Sciences, School of Osteopathic Medicine, Rowan University, Stratford, NJ, 08084, USA
| | - Harini Krishnan
- Department of Physiology and Biophysics, School of Medicine, Stony Brook University Stony Brook, NY, 11794-8661, USA
| | - Haiyan Zheng
- Biological Mass Spectrometry Resources, Robert Wood Johnson Medical School, Rutgers, State University of New jersey, New Brunswick, NJ, 08901, USA
| | - Caifeng Zhao
- Biological Mass Spectrometry Resources, Robert Wood Johnson Medical School, Rutgers, State University of New jersey, New Brunswick, NJ, 08901, USA
| | - Gary S. Goldberg
- Department of Molecular Biology, And Graduate School of Biomedical Sciences, School of Osteopathic Medicine, Rowan University, Stratford, NJ, 08084, USA
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