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Patrucco D, Cutrin JC, Longo DL, Botto E, Cong L, Aime S, Delli Castelli D. In Situ Insonation of Alkaline Buffer Containing Liposomes Leads to a Net Improvement of the Therapeutic Outcome in a Triple Negative Breast Cancer Murine Model. Adv Healthc Mater 2023; 12:e2301480. [PMID: 37709294 DOI: 10.1002/adhm.202301480] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/12/2023] [Indexed: 09/16/2023]
Abstract
Breast cancer is characterized by an acidic micro-environment. Acidic extracellular pH gives cancer cells an evolutionary advantage, hence, neutralization of the extracellular pH has been considered as a potential therapeutic strategy. To address the issue of systemic pH alteration, an approach based on the targeted delivery of the buffering solution to the tumor region is investigated. The method relies on the use of low frequency ultrasound and sono-sensitive liposomes loaded with buffers at alkaline pH (LipHUS). After the i.v. injection of LipHUS, the application of ultrasound (US) at the sites of the pathology induces a local increase of pH that results highly effective in i) inhibiting primary tumor growth, ii) reducing tumor recurrence after surgery, and iii) suppressing metastases' formation. The experiments are carried out on a triple negative breast cancer mouse model. The results obtained demonstrate that localized and triggered release of bicarbonate or PBS buffer from sonosensitive liposomes represents an efficient therapeutic tool for treating triple-negative breast cancer. This approach holds promise for potential clinical translation.
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Affiliation(s)
- Deyssy Patrucco
- Department of Molecular Biotechnology and Health Science, University of Turin, Via Nizza 52, Turin, 10126, Italy
| | - Juan Carlos Cutrin
- Department of Molecular Biotechnology and Health Science, University of Turin, Via Nizza 52, Turin, 10126, Italy
| | - Dario Livio Longo
- Istituto di Biostrutture e Bioimmagini (IBB), Consiglio Nazionale delle Ricerche (CNR), Via Tommaso De Amicis, 95, Naples, 80145, Italy
| | - Elena Botto
- Istituto di Biostrutture e Bioimmagini (IBB), Consiglio Nazionale delle Ricerche (CNR), Via Tommaso De Amicis, 95, Naples, 80145, Italy
| | - Li Cong
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Silvio Aime
- IRCCS SDN, SYNLAB, Via Gianturco 113, Naples, 80143, Italy
| | - Daniela Delli Castelli
- Department of Molecular Biotechnology and Health Science, University of Turin, Via Nizza 52, Turin, 10126, Italy
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Shie WY, Chu PH, Kuo MYP, Chen HW, Lin MT, Su XJ, Hong YL, Chou HYE. Acidosis promotes the metastatic colonization of lung cancer via remodeling of the extracellular matrix and vasculogenic mimicry. Int J Oncol 2023; 63:136. [PMID: 37888615 PMCID: PMC10631766 DOI: 10.3892/ijo.2023.5584] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 07/12/2023] [Indexed: 10/28/2023] Open
Abstract
Acidosis is a hallmark of the tumor microenvironment caused by the metabolic switch from glucose oxidative phosphorylation to glycolysis. It has been associated with tumor growth and progression; however, the precise mechanism governing how acidosis promotes metastatic dissemination has yet to be elucidated. In the present study, a long‑term acidosis model was established using patient‑derived lung cancer cells, to identify critical components of metastatic colonization via transcriptome profiling combined with both in vitro and in vivo functional assays, and association analysis using clinical samples. Xenograft inoculates of 1 or 10 acidotic cells mimicking circulating tumor cell clusters were shown to exhibit increased tumor incidence compared with their physiological pH counterparts. Transcriptomics revealed that profound remodeling of the extracellular matrix (ECM) occurred in the acidotic cells, including upregulation of the integrin subunit α‑4 (ITGA4) gene. In clinical lung cancer, ITGA4 expression was found to be upregulated in primary tumors with metastatic capability, and this trait was retained in the corresponding secondary tumors. Expression of ITGA4 was markedly upregulated around the vasculogenic mimicry structures of the acidotic tumors, while acidotic cells exhibited a higher ability of vasculogenic mimicry in vitro. Acidosis was also found to induce the enrichment of side population cells, suggesting an enhanced resistance to noxious attacks of the tumor microenvironment. Taken together, these results demonstrated that acidosis actively contributed to tumor metastatic colonization, and novel mechanistic insights into the therapeutic management and prognosis of lung cancer were discussed.
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Affiliation(s)
- Wan-Yi Shie
- Graduate Institute of Oral Biology, National Taiwan University, Taipei 106, Taiwan, R.O.C
| | - Pin-Hsuan Chu
- Graduate Institute of Oral Biology, National Taiwan University, Taipei 106, Taiwan, R.O.C
| | - Mark Yen-Ping Kuo
- Department of Dentistry, College of Medicine, National Taiwan University, Taipei 106, Taiwan, R.O.C
- Department of Dentistry, National Taiwan University Hospital, Taipei 106, Taiwan, R.O.C
| | - Huei-Wen Chen
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei 100, Taipei 106, Taiwan, R.O.C
| | - Meng-Tie Lin
- Graduate Institute of Oral Biology, National Taiwan University, Taipei 106, Taiwan, R.O.C
| | - Xuan-Jie Su
- Graduate Institute of Oral Biology, National Taiwan University, Taipei 106, Taiwan, R.O.C
| | - Yi-Ling Hong
- Graduate Institute of Oral Biology, National Taiwan University, Taipei 106, Taiwan, R.O.C
| | - Han-Yi Elizabeth Chou
- Graduate Institute of Oral Biology, National Taiwan University, Taipei 106, Taiwan, R.O.C
- Department of Dentistry, National Taiwan University Hospital, Taipei 106, Taiwan, R.O.C
- Center for Biotechnology, National Taiwan University, Taipei 106, Taiwan, R.O.C
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Harguindey S, Alfarouk K, Polo Orozco J, Reshkin SJ, Devesa J. Hydrogen Ion Dynamics as the Fundamental Link between Neurodegenerative Diseases and Cancer: Its Application to the Therapeutics of Neurodegenerative Diseases with Special Emphasis on Multiple Sclerosis. Int J Mol Sci 2022; 23:ijms23052454. [PMID: 35269597 PMCID: PMC8910484 DOI: 10.3390/ijms23052454] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 01/29/2022] [Revised: 02/17/2022] [Accepted: 02/21/2022] [Indexed: 02/01/2023] Open
Abstract
The pH-related metabolic paradigm has rapidly grown in cancer research and treatment. In this contribution, this recent oncological perspective has been laterally assessed for the first time in order to integrate neurodegeneration within the energetics of the cancer acid-base conceptual frame. At all levels of study (molecular, biochemical, metabolic, and clinical), the intimate nature of both processes appears to consist of opposite mechanisms occurring at the far ends of a physiopathological intracellular pH/extracellular pH (pHi/pHe) spectrum. This wide-ranging original approach now permits an increase in our understanding of these opposite processes, cancer and neurodegeneration, and, as a consequence, allows us to propose new avenues of treatment based upon the intracellular and microenvironmental hydrogen ion dynamics regulating and deregulating the biochemistry and metabolism of both cancer and neural cells. Under the same perspective, the etiopathogenesis and special characteristics of multiple sclerosis (MS) is an excellent model for the study of neurodegenerative diseases and, utilizing this pioneering approach, we find that MS appears to be a metabolic disease even before an autoimmune one. Furthermore, within this paradigm, several important aspects of MS, from mitochondrial failure to microbiota functional abnormalities, are analyzed in depth. Finally, and for the first time, a new and integrated model of treatment for MS can now be advanced.
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Affiliation(s)
- Salvador Harguindey
- Division of Oncology, Institute of Clinical Biology and Metabolism, 01004 Vitoria, Spain;
- Correspondence: ; Tel.: +34-629-047-141
| | - Khalid Alfarouk
- Institute of Endemic Diseases, University of Khartoum, Khartoum 11111, Sudan;
| | - Julián Polo Orozco
- Division of Oncology, Institute of Clinical Biology and Metabolism, 01004 Vitoria, Spain;
| | - Stephan J Reshkin
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, 70125 Bari, Italy;
| | - Jesús Devesa
- Scientific Direction, Foltra Medical Centre, 15886 Teo, Spain;
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