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De Freitas JH, Bragato JP, Rebech GT, Costa SF, Dos Santos MO, Soares MF, Eugênio FDR, Dos Santos PSP, De Lima VMF. MicroRNA-21 and microRNA-148a affects PTEN, NO and ROS in canine leishmaniasis. Front Genet 2023; 14:1106496. [PMID: 37124626 PMCID: PMC10137164 DOI: 10.3389/fgene.2023.1106496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
Canine Visceral leishmaniasis (CanL) poses a severe public health threat in several countries. Disease progression depends on the degree of immune response suppression. MicroRNAs (miRs) modulate mRNA translation into proteins and regulate various cellular functions and pathways associated with immune responses. MiR-21 and miR-148a can alter the parasite load and M1 macrophages are the principal cells in dogs' leishmanicidal activity. A previous study found increased miR-21 and miR-148a in splenic leukocytes (SL) of dogs with CanL using microarray analysis and in silico analysis identified PTEN pathway targets. PTEN is involved in the immune regulation of macrophages. We measured PTEN and the production of reactive oxygen species (ROS) and nitric oxide (NO) before and after transfection SLs of dogs with CanL with mimic and inhibition of miR-21 and miR-148a. PTEN levels increased, NO and ROS decreased in SLs from dogs with CanL. Inhibition of miRNA-21 resulted in PTEN increase; in contrast, PTEN decreased after miR-148a inhibition. Nitrite (NO2) levels increased after transfection with miR-21 inhibitor but were decreased with miR-148a inhibitor. The increase in miR-21 promoted a reduction in ROS and NO levels, but miR-148a inhibition increased NO and reduced ROS. These findings suggest that miR-21 and miR-148a can participate in immune response in CanL, affecting PTEN, NO, and ROS levels.
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Andreucci E, Ruzzolini J, Bianchini F, Versienti G, Biagioni A, Lulli M, Guasti D, Nardini P, Serratì S, Margheri F, Laurenzana A, Nediani C, Peppicelli S, Calorini L. miR-214-Enriched Extracellular Vesicles Released by Acid-Adapted Melanoma Cells Promote Inflammatory Macrophage-Dependent Tumor Trans-Endothelial Migration. Cancers (Basel) 2022; 14:cancers14205090. [PMID: 36291876 PMCID: PMC9599952 DOI: 10.3390/cancers14205090] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/19/2022] [Accepted: 09/26/2022] [Indexed: 11/22/2022] Open
Abstract
Simple Summary Cutaneous melanoma is the most aggressive form of skin cancer with high-metastatic ability. Despite the recent advancements in melanoma treatments, the prognosis of metastatic patients remains very poor. A better understanding of the molecular mechanisms leading to melanoma dissemination is urgently needed in order to develop novel therapeutical strategies to ameliorate patients’ outcomes. Extracellular vesicles (EV) released by tumor cells are key players in metastasis development: by conveying bioactive molecules with oncogenic activity, they can modulate the surrounding—and even the distant—microenvironment and reprogram recipient cells to facilitate the metastatic cascade. Here, we show that melanoma cells release a higher amount of miR-214-enriched EV when adapted to extracellular acidosis, which promote a macrophage activation state, capable of facilitating the trans-endothelial migration of melanoma cells. Thus, we disclose a new molecular mechanism to prevent melanoma intravasation based on miR-214 targeting. Abstract The understanding of the molecular mechanisms leading to melanoma dissemination is urgently needed in view of the identification of new targets and the development of innovative strategies to improve patients’ outcomes. Within the complexity of tumor intercellular communications leading to metastatic dissemination, extracellular vesicles (EV) released by tumor cells are central players. Indeed, the ability to travel through the circulatory system conveying oncogenic bioactive molecules even at distant sites makes EV capable of modulating recipient cells to facilitate metastatic dissemination. The dynamic remodeling of the tumor microenvironment might influence, along with a number of other events, tumoral EV release. We observed that, in melanoma, extracellular acidosis increases the release of EV enriched in miR-214, an onco-miRNA involved in melanoma metastasis. Then, miR-214-enriched EV were found to induce a state of macrophage activation, leading to an overproduction of proinflammatory cytokines and nitric oxide. Such an inflammatory microenvironment was able to alter the endothelial cell permeability, thereby facilitating the trans-endothelial migration of melanoma cells, a crucial step in the metastatic cascade. The use of synthetic miR-214 inhibitors and miR-214 overexpression allowed us to demonstrate the key role of miR-214 in the EV-dependent induction of macrophage activation. Overall, our in vitro study reveals that the release of tumor miR-214-enriched EV, potentiated by adapting tumor cells to extracellular acidosis, drives a macrophage-dependent trans-endothelial migration of melanoma cells. This finding points to miR-214 as a potential new therapeutic target to prevent melanoma intravasation.
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Affiliation(s)
- Elena Andreucci
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
- Correspondence: (E.A.); (L.C.)
| | - Jessica Ruzzolini
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Francesca Bianchini
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Giampaolo Versienti
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Alessio Biagioni
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Matteo Lulli
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Daniele Guasti
- Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Patrizia Nardini
- Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Simona Serratì
- Laboratory of Nanotecnology, IRCCS Istituto Tumori “Giovanni Paolo II”, 70124 Bari, Italy
| | - Francesca Margheri
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Anna Laurenzana
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Chiara Nediani
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Silvia Peppicelli
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
| | - Lido Calorini
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, 50134 Florence, Italy
- Correspondence: (E.A.); (L.C.)
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