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Irep N, Inci K, Tokgun PE, Tokgun O. Exosome inhibition improves response to first-line therapy in small cell lung cancer. J Cell Mol Med 2024; 28:e18138. [PMID: 38353469 PMCID: PMC10865916 DOI: 10.1111/jcmm.18138] [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: 08/29/2023] [Revised: 01/09/2024] [Accepted: 01/18/2024] [Indexed: 02/16/2024] Open
Abstract
Exosomes are recognized as important mediators of cell-to-cell communication, facilitating carcinogenesis. Although there have been significant advancements in exosome research in recent decades, no drugs that target the inhibition of sEV secretion have been approved for human use. For this study, we employed GW4869 and Nexinhib20 as inhibitors of exosome synthesis and trafficking combined. First, we found that Nexinhib20 and GW4869 effectively inhibited RAB27A and neutral sphingomyelinase 2 (nSMase2) nsMase2. Interestingly, the inhibition of nsMase2 and RAB27A decreased expression of CD9, CD63 and Tsg101, both at RNA and protein levels. We used a combination treatment strategy of cisplatin/etoposide plus GW4869 or Nexinhib20 on small cell lung cancer (SCLC) cell lines. The combination treatment of GW4869 or Nexinhib20 effectively enhanced the inhibitory effects of first-line chemotherapy on the SCLC cells. Furthermore, we demonstrated that reducing exosome release through GW4869 and Nexinhib20 treatment effectively reduced cellular proliferation and significantly induced apoptosis in SCLC cells. Also, we showed that combining exosome inhibition with chemotherapy has a significant synergistic effect on cellular proliferation. We also found increased p53 and p21 expressions with western blot and significantly changing Bax, BCL2, caspase-3 and caspase-9 expressions. Inhibiting the exosome pathway offers opportunities for developing novel, effective treatment strategies for SCLC.
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Affiliation(s)
- Nesrin Irep
- Department of Cancer Molecular Biology, Institution of Health SciencesPamukkale UniversityDenizliTurkey
| | - Kubilay Inci
- Department of Cancer Molecular Biology, Institution of Health SciencesPamukkale UniversityDenizliTurkey
| | - Pervin Elvan Tokgun
- Department of Medical Genetics, Faculty of MedicinePamukkale UniversityDenizliTurkey
| | - Onur Tokgun
- Department of Cancer Molecular Biology, Institution of Health SciencesPamukkale UniversityDenizliTurkey
- Department of Medical Genetics, Faculty of MedicinePamukkale UniversityDenizliTurkey
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Bryja A, Zadka Ł, Farzaneh M, Zehtabi M, Ghasemian M, Dyszkiewicz-Konwińska M, Mozdziak P, Zabel M, Podhorska-Okołów M, Dzięgiel P, Piotrowska-Kempisty H, Kempisty B. Small extracellular vesicles - A host for advanced bioengineering and "Trojan Horse" of non-coding RNAs. Life Sci 2023; 332:122126. [PMID: 37769803 DOI: 10.1016/j.lfs.2023.122126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/19/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
Small extracellular vesicles (sEVs) are a type of membranous vesicles that can be released by cells into the extracellular space. The relationship between sEVs and non-coding RNAs (ncRNAs) is highly intricate and interdependent. This symbiotic relationship plays a pivotal role in facilitating intercellular communication and holds profound implications for a myriad of biological processes. The concept of sEVs and their ncRNA cargo as a "Trojan Horse" highlights their remarkable capacity to traverse biological barriers and surreptitiously deliver their cargo to target cells, evading detection by the host-immune system. Accumulating evidence suggests that sEVs may be harnessed as carriers to ferry therapeutic ncRNAs capable of selectively silencing disease-driving genes, particularly in conditions such as cancer. This approach presents several advantages over conventional drug delivery methods, opening up new possibilities for targeted therapy and improved treatment outcomes. However, the utilization of sEVs and ncRNAs as therapeutic agents raises valid concerns regarding the possibility of unforeseen consequences and unintended impacts that may emerge from their application. It is important to consider the fundamental attributes of sEVs and ncRNAs, including by an in-depth analysis of the practical and clinical potentials of exosomes, serving as a representative model for sEVs encapsulating ncRNAs.
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Affiliation(s)
- Artur Bryja
- Division of Anatomy, Department of Human Morphology and Embryology, Wroclaw Medical University, Wrocław, Poland
| | - Łukasz Zadka
- Division of Ultrastructural Research, Wroclaw Medical University, Wrocław, Poland
| | - Maryam Farzaneh
- Fertility, Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mojtaba Zehtabi
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Majid Ghasemian
- Department of Clinical Biochemistry, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Paul Mozdziak
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, USA
| | - Maciej Zabel
- Division of Ultrastructural Research, Wroclaw Medical University, Wrocław, Poland; Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, Wrocław, Poland; Division of Anatomy and Histology, University of Zielona Gora, Zielona Góra, Poland
| | | | - Piotr Dzięgiel
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, Wrocław, Poland
| | - Hanna Piotrowska-Kempisty
- Department of Toxicology, Poznan University of Medical Sciences, Poznań, Poland; Department of Basic and Preclinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Poland
| | - Bartosz Kempisty
- Division of Anatomy, Department of Human Morphology and Embryology, Wroclaw Medical University, Wrocław, Poland; Prestage Department of Poultry Science, North Carolina State University, Raleigh, USA; Department of Obstetrics and Gynecology, University Hospital and Masaryk University, Brno, Czech Republic; Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Toruń, Poland.
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