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Di Paolo D, Pastorino F, Brignole C, Corrias MV, Emionite L, Cilli M, Tamma R, Priddy L, Amaro A, Ferrari D, Marotta R, Ferretti E, Pfeffer U, Ribatti D, Sementa AR, Brown D, Ikegaki N, Shimada H, Ponzoni M, Perri P. Combined Replenishment of miR-34a and let-7b by Targeted Nanoparticles Inhibits Tumor Growth in Neuroblastoma Preclinical Models. Small 2020; 16:e1906426. [PMID: 32323486 DOI: 10.1002/smll.201906426] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 03/20/2020] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
Neuroblastoma (NB) tumor substantially contributes to childhood cancer mortality. The design of novel drugs targeted to specific molecular alterations becomes mandatory, especially for high-risk patients burdened by chemoresistant relapse. The dysregulated expression of MYCN, ALK, and LIN28B and the diminished levels of miR-34a and let-7b are oncogenic in NB. Due to the ability of miRNA-mimics to recover the tumor suppression functions of miRNAs underexpressed into cancer cells, safe and efficient nanocarriers selectively targeted to NB cells and tested in clinically relevant mouse models are developed. The technology exploits the nucleic acids negative charges to build coated-cationic liposomes, then functionalized with antibodies against GD2 receptor. The replenishment of miR-34a and let-7b by NB-targeted nanoparticles, individually and more powerfully in combination, significantly reduces cell division, proliferation, neoangiogenesis, tumor growth and burden, and induces apoptosis in orthotopic xenografts and improves mice survival in pseudometastatic models. These functional effects highlight a cooperative down-modulation of MYCN and its down-stream targets, ALK and LIN28B, exerted by miR-34a and let-7b that reactivate regulatory networks leading to a favorable therapeutic response. These findings demonstrate a promising therapeutic efficacy of miR-34a and let-7b combined replacement and support its clinical application as adjuvant therapy for high-risk NB patients.
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Affiliation(s)
- Daniela Di Paolo
- Laboratory of Experimental Therapies in Oncology, IRCCS Istituto Giannina Gaslini, Genoa, 16147, Italy
| | - Fabio Pastorino
- Laboratory of Experimental Therapies in Oncology, IRCCS Istituto Giannina Gaslini, Genoa, 16147, Italy
| | - Chiara Brignole
- Laboratory of Experimental Therapies in Oncology, IRCCS Istituto Giannina Gaslini, Genoa, 16147, Italy
| | - Maria Valeria Corrias
- Laboratory of Experimental Therapies in Oncology, IRCCS Istituto Giannina Gaslini, Genoa, 16147, Italy
| | - Laura Emionite
- Animal Facility, IRCSS Ospedale Policlinico San Martino, Genoa, 16132, Italy
| | - Michele Cilli
- Animal Facility, IRCSS Ospedale Policlinico San Martino, Genoa, 16132, Italy
| | - Roberto Tamma
- Department of Basic Medical Sciences Neurosciences and Sensory Organs, University of Bari Medical School, Bari, 70124, Italy
| | - Leslie Priddy
- Mirna Therapeutics, Inc. 2150 Woodward Street, Suite 100, Austin, TX, 78744, USA
| | - Adriana Amaro
- Tumor Epigenetic Unit, IRCSS Ospedale Policlinico San Martino, Genoa, 16132, Italy
| | - Davide Ferrari
- TIB MOLBIOL S.r.l., Advanced Biotechnology Center, Genoa, 16132, Italy
| | - Roberto Marotta
- Electron Microscopy Facility, Istituto Italiano di Tecnologia (IIT), Genoa, 16163, Italy
| | - Elisa Ferretti
- Laboratory of Experimental Therapies in Oncology, IRCCS Istituto Giannina Gaslini, Genoa, 16147, Italy
| | - Ulrich Pfeffer
- Tumor Epigenetic Unit, IRCSS Ospedale Policlinico San Martino, Genoa, 16132, Italy
| | - Domenico Ribatti
- Department of Basic Medical Sciences Neurosciences and Sensory Organs, University of Bari Medical School, Bari, 70124, Italy
| | - Angela Rita Sementa
- Pathology Unit, IRCCS Istituto Giannina Gaslini, Via G. Gaslini 5, Genoa, 16147, Italy
| | - David Brown
- Mirna Therapeutics, Inc. 2150 Woodward Street, Suite 100, Austin, TX, 78744, USA
| | - Naohiko Ikegaki
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Hiroyuki Shimada
- Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, University of Southern California, Los Angeles, CA, 90027, USA
| | - Mirco Ponzoni
- Laboratory of Experimental Therapies in Oncology, IRCCS Istituto Giannina Gaslini, Via G. Gaslini 5, Genoa, 16147, Italy
| | - Patrizia Perri
- Laboratory of Experimental Therapies in Oncology, IRCCS Istituto Giannina Gaslini, Via G. Gaslini 5, Genoa, 16147, Italy
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