1
|
Sivaccumar JP, Leonardi A, Iaccarino E, Corvino G, Sanguigno L, Chambery A, Russo R, Valletta M, Latino D, Capasso D, Doti N, Ruvo M, Sandomenico A. Development of a New Highly Selective Monoclonal Antibody against Preferentially Expressed Antigen in Melanoma (PRAME) and Identification of the Target Epitope by Bio-Layer Interferometry. Int J Mol Sci 2021; 22:ijms22063166. [PMID: 33804612 PMCID: PMC8003813 DOI: 10.3390/ijms22063166] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/11/2021] [Accepted: 03/18/2021] [Indexed: 02/05/2023] Open
Abstract
Background: Monoclonal antibodies (mAbs) against cancer biomarkers are key reagents in diagnosis and therapy. One such relevant biomarker is a preferentially expressed antigen in melanoma (PRAME) that is selectively expressed in many tumors. Knowing mAb’s epitope is of utmost importance for understanding the potential activity and therapeutic prospective of the reagents. Methods: We generated a mAb against PRAME immunizing mice with PRAME fragment 161–415; the affinity of the antibody for the protein was evaluated by ELISA and SPR, and its ability to detect the protein in cells was probed by cytofluorimetry and Western blotting experiments. The antibody epitope was identified immobilizing the mAb on bio-layer interferometry (BLI) sensor chip, capturing protein fragments obtained following trypsin digestion and performing mass spectrometry analyses. Results: A mAb against PRAME with an affinity of 35 pM was obtained and characterized. Its epitope on PRAME was localized on residues 202–212, taking advantage of the low volumes and lack of fluidics underlying the BLI settings. Conclusions: The new anti-PRAME mAb recognizes the folded protein on the surface of cell membranes suggesting that the antibody’s epitope is well exposed. BLI sensor chips can be used to identify antibody epitopes.
Collapse
MESH Headings
- Animals
- Antibodies, Monoclonal/chemistry
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/pharmacology
- Antibody Specificity
- Antigens, Neoplasm/immunology
- Antineoplastic Agents, Immunological/chemistry
- Antineoplastic Agents, Immunological/immunology
- Antineoplastic Agents, Immunological/pharmacology
- Dose-Response Relationship, Drug
- Drug Development
- Enzyme-Linked Immunosorbent Assay
- Epitopes/chemistry
- Epitopes/immunology
- Flow Cytometry
- Humans
- Interferometry
- Kinetics
- Melanoma
- Mice
- Molecular Targeted Therapy
- Protein Binding/immunology
- Recombinant Proteins
- Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
Collapse
Affiliation(s)
| | - Antonio Leonardi
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, 80142 Napoli, Italy; (A.L.); (L.S.)
| | - Emanuela Iaccarino
- Istituto di Biostrutture e Bioimmagini, CNR, 80134 Napoli, Italy; (J.P.S.); (E.I.); (G.C.); (D.L.); (N.D.)
| | - Giusy Corvino
- Istituto di Biostrutture e Bioimmagini, CNR, 80134 Napoli, Italy; (J.P.S.); (E.I.); (G.C.); (D.L.); (N.D.)
| | - Luca Sanguigno
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, 80142 Napoli, Italy; (A.L.); (L.S.)
| | - Angela Chambery
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche (DISTABIF), Università L. Vanvitelli, 80100 Caserta, Italy; (A.C.); (R.R.); (M.V.)
| | - Rosita Russo
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche (DISTABIF), Università L. Vanvitelli, 80100 Caserta, Italy; (A.C.); (R.R.); (M.V.)
| | - Mariangela Valletta
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche (DISTABIF), Università L. Vanvitelli, 80100 Caserta, Italy; (A.C.); (R.R.); (M.V.)
| | - Debora Latino
- Istituto di Biostrutture e Bioimmagini, CNR, 80134 Napoli, Italy; (J.P.S.); (E.I.); (G.C.); (D.L.); (N.D.)
| | - Domenica Capasso
- Centro di Servizio di Ateneo per le Scienze e Tecnologie per la Vita (CESTEV), Università di Napoli Federico II, 80145 Napoli, Italy;
| | - Nunzianna Doti
- Istituto di Biostrutture e Bioimmagini, CNR, 80134 Napoli, Italy; (J.P.S.); (E.I.); (G.C.); (D.L.); (N.D.)
| | - Menotti Ruvo
- Istituto di Biostrutture e Bioimmagini, CNR, 80134 Napoli, Italy; (J.P.S.); (E.I.); (G.C.); (D.L.); (N.D.)
- Correspondence: (M.R.); (A.S.)
| | - Annamaria Sandomenico
- Istituto di Biostrutture e Bioimmagini, CNR, 80134 Napoli, Italy; (J.P.S.); (E.I.); (G.C.); (D.L.); (N.D.)
- Correspondence: (M.R.); (A.S.)
| |
Collapse
|
2
|
Calvanese L, Focà A, Sandomenico A, Focà G, Caporale A, Doti N, Iaccarino E, Leonardi A, D'Auria G, Ruvo M, Falcigno L. Structural insights into the interaction of a monoclonal antibody and Nodal peptides by STD-NMR spectroscopy. Bioorg Med Chem 2017; 25:6589-6596. [PMID: 29113739 DOI: 10.1016/j.bmc.2017.10.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 10/05/2017] [Accepted: 10/26/2017] [Indexed: 12/31/2022]
Abstract
Nodal is a growth factor expressed during early embryonic development, but reactivated in several advanced-stage cancers. Targeting of Nodal signaling, which occurs via the binding to Cripto-1 co-receptor, results in inhibition of cell aggressiveness and reduced tumor growth. The Nodal binding region to Cripto-1 was identified and targeted with a high affinity monoclonal antibody (3D1). By STD-NMR technique, we investigated the interaction of Nodal fragments with 3D1 with the aim to elucidate at atomic level the interaction surface. Data indicate with high accuracy the antibody-antigen contact atoms and confirm the information previously obtained by immune-enzymatic methods. Main residues contacted by 3D1 are P46, V47, E49 and E50, which belong to the Nodal loop involved in the interaction with the co-receptor.
Collapse
Affiliation(s)
- Luisa Calvanese
- CIRPeB, University of Naples Federico II, via Mezzocannone, 16, 80134 Napoli, Italy
| | - Annalia Focà
- Institute of Biostructures and Bioimaging, National Research Council, IBB-CNR, via Mezzocannone, 16, 80134 Napoli, Italy
| | - Annamaria Sandomenico
- CIRPeB, University of Naples Federico II, via Mezzocannone, 16, 80134 Napoli, Italy; Institute of Biostructures and Bioimaging, National Research Council, IBB-CNR, via Mezzocannone, 16, 80134 Napoli, Italy
| | - Giuseppina Focà
- Institute of Biostructures and Bioimaging, National Research Council, IBB-CNR, via Mezzocannone, 16, 80134 Napoli, Italy
| | - Andrea Caporale
- CIRPeB, University of Naples Federico II, via Mezzocannone, 16, 80134 Napoli, Italy
| | - Nunzianna Doti
- Institute of Biostructures and Bioimaging, National Research Council, IBB-CNR, via Mezzocannone, 16, 80134 Napoli, Italy
| | - Emanuela Iaccarino
- DISTABIF, Università degli Studi della Campania "Lugi Vanvitelli", via Vivaldi, 43, 80100 Caserta, Italy
| | - Antonio Leonardi
- Dept. Medicina Molecolare e Biotecnologie Mediche, Università Federico II di Napoli, Naples, Italy
| | - Gabriella D'Auria
- CIRPeB, University of Naples Federico II, via Mezzocannone, 16, 80134 Napoli, Italy; Institute of Biostructures and Bioimaging, National Research Council, IBB-CNR, via Mezzocannone, 16, 80134 Napoli, Italy; Dept. of Pharmacy, University of Naples Federico II, via Mezzocannone, 16, 80134 Napoli, Italy
| | - Menotti Ruvo
- CIRPeB, University of Naples Federico II, via Mezzocannone, 16, 80134 Napoli, Italy; Institute of Biostructures and Bioimaging, National Research Council, IBB-CNR, via Mezzocannone, 16, 80134 Napoli, Italy.
| | - Lucia Falcigno
- CIRPeB, University of Naples Federico II, via Mezzocannone, 16, 80134 Napoli, Italy; Institute of Biostructures and Bioimaging, National Research Council, IBB-CNR, via Mezzocannone, 16, 80134 Napoli, Italy; Dept. of Pharmacy, University of Naples Federico II, via Mezzocannone, 16, 80134 Napoli, Italy.
| |
Collapse
|