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Pan X, Shi X, Zhang H, Chen Y, Zhou J, Shen F, Wang J, Jiang R. Exosomal miR-4516 derived from ovarian cancer stem cells enhanced cisplatin tolerance in ovarian cancer by inhibiting GAS7. Gene 2024; 927:148738. [PMID: 38955306 DOI: 10.1016/j.gene.2024.148738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 06/05/2024] [Accepted: 06/28/2024] [Indexed: 07/04/2024]
Abstract
Ovarian cancer (OC) is a devastating disease for women, with chemotherapy resistance taking the lead. Cisplatin has been the first-line therapy for OC for a long time. However, the resistance of OC to cisplatin is an important impediment to its efficacy. Mounting studies showed that ovarian cancer stem cells (OCSCs) affected chemotherapy resistance by secreting exosomes. MicroRNAs (miRNAs) play important roles in exosomes secreted by OCSCs. Here, through the analysis of GEO database (GSE107155) combined with RT-qPCR of OC-related cells/clinical tissues, it was found that hsa-miR-4516 (miR-4516) was significantly up-regulated in OCSCs. Then, OCSCs-derived exosomes were isolated and identified, and it was observed the influence of exosomes on the chemoresistance in SKOV3/cisplatin (SKOV3/DDP) cells. These results manifested that OCSCs-mediated exosomes facilitated the chemoresistance of SKOV3/DDP cells by delivering miR-4516 into them. Growth arrest-specific 7 (GAS7), a downstream target of miR-4516, was determined by bioinformatics prediction combined with molecular biological detection. Next, we up-regulated GAS7 expression and discovered that the promotion of chemoresistance in SKOV3/DDP cells by OCSCs-derived exosomes was significantly impaired. Finally, the mice tumor model of SKOV3/DDP cells was built to estimate the effect of GAS7 over-expression on OC growth. The results showed that GAS7 inhibited the chemoresistance of OC in vivo. In conclusion, our experiments suggested that OCSCs-derived exosomes enhanced OC cisplatin resistance by suppressing GAS7 through the delivery of miR-4516. This study provides a possible target for the treatment of OC DDP resistance.
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Affiliation(s)
- Xin Pan
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Soochow University, No. 899 Pinghai Road, Suzhou 215000, China
| | - Xiu Shi
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Soochow University, No. 899 Pinghai Road, Suzhou 215000, China
| | - Hong Zhang
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Soochow University, No. 899 Pinghai Road, Suzhou 215000, China
| | - YouGuo Chen
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Soochow University, No. 899 Pinghai Road, Suzhou 215000, China
| | - JinHua Zhou
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Soochow University, No. 899 Pinghai Road, Suzhou 215000, China
| | - FangRong Shen
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Soochow University, No. 899 Pinghai Road, Suzhou 215000, China
| | - Juan Wang
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Soochow University, No. 899 Pinghai Road, Suzhou 215000, China
| | - Rong Jiang
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Soochow University, No. 899 Pinghai Road, Suzhou 215000, China.
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Mladenović D, Khamari D, Kittel Á, Koort K, Buzás EI, Zarovni N. Acidification of blood plasma facilitates the separation and analysis of extracellular vesicles. JOURNAL OF THROMBOSIS AND HAEMOSTASIS : JTH 2023; 21:1032-1042. [PMID: 36774282 DOI: 10.1016/j.jtha.2023.01.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 12/10/2022] [Accepted: 01/05/2023] [Indexed: 01/15/2023]
Abstract
BACKGROUND Blood plasma is available with minimal invasive sampling, it has significant diagnostic utility, and it is a valuable source of extracellular vesicles (EVs). Nevertheless, rich protein content, the presence of lipoproteins (LPs) that share similar biophysical properties, and relatively low abundance of EVs, especially those of rare subpopulations, make any downstream application a very challenging task. The growing evidence of the intricate surface interactome of EVs, and the association of EVs with LPs, impose further challenges during EV purification, detection, and biomarker analyses. OBJECTIVES In this study, we tackled the fundamental issues of plasma EV yield and LP co-isolation and their implications in the subsequent marker analyses. METHODS Moderate acidification of plasma was combined with size exclusion chromatography (SEC) and/or differential centrifugation (DC) to disrupt LPs and improve recovery of EVs and their subsequent detection by immunoassays and single-particle analysis methods. RESULTS Our results demonstrate a surprisingly efficient enrichment of EVs (up to 3.3-fold higher than at pH 7) and partial depletion of LPs (up to 61.2%). Acidification of blood plasma samples enabled a quick single-step isoelectric precipitation of up to 20.4% of EVs directly from plasma, upon short low-speed centrifugation. CONCLUSION Thus, acidification holds potential as a simple and inexpensive methodological step, which improves the efficacy of plasma EV enrichment and may have implications in future biomarker discoveries.
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Affiliation(s)
- Danilo Mladenović
- HansaBioMed Life Sciences Ltd., Tallinn, Estonia; School of Natural Sciences and Health, Tallinn University, Tallinn, Estonia. https://twitter.com/DanMladenovic
| | - Delaram Khamari
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary; Eötvös Loránd Research Network, Translational Extracellular Vesicle Research Group, Semmelweis University, Budapest, Hungary
| | - Ágnes Kittel
- Eötvös Loránd Research Network, Institute of Experimental Medicine, Budapest, Hungary
| | - Kairi Koort
- School of Natural Sciences and Health, Tallinn University, Tallinn, Estonia
| | - Edit I Buzás
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary; Eötvös Loránd Research Network, Translational Extracellular Vesicle Research Group, Semmelweis University, Budapest, Hungary; Hungarian Center of Excellence Molecular Medicine, Extracellular Vesicle Research Group, Semmelweis University, Budapest, Hungary
| | - Nataša Zarovni
- HansaBioMed Life Sciences Ltd., Tallinn, Estonia; Exosomics SpA, Siena, Italy.
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Pan Z, Sun W, Chen Y, Tang H, Lin W, Chen J, Chen C. Extracellular Vesicles in Tissue Engineering: Biology and Engineered Strategy. Adv Healthc Mater 2022; 11:e2201384. [PMID: 36053562 DOI: 10.1002/adhm.202201384] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/07/2022] [Indexed: 01/28/2023]
Abstract
Extracellular vesicles (EVs), acting as an important ingredient of intercellular communication through paracrine actions, have gained tremendous attention in the field of tissue engineering (TE). Moreover, these nanosized extracellular particles (30-140 nm) can be incorporated into biomaterials according to different principles to facilitate signal delivery in various regenerative processes directly or indirectly. Bioactive biomaterials as the carrier will extend the retention time and realize the controlled release of EVs, which further enhance their therapeutic efficiency in tissue regeneration. Herein, the basic biological characteristics of EVs are first introduced, and then their outstanding performance in exerting direct impacts on target cells in tissue regeneration as well as indirect effects on promoting angiogenesis and regulating the immune environment, due to specific functional components of EVs (nucleic acid, protein, lipid, etc.), is emphasized. Furthermore, different design ideas for suitable EV-loaded biomaterials are also demonstrated. In the end, this review also highlights the engineered strategies, which aim at solving the problems related to natural EVs such as highly heterogeneous functions, inadequate tissue targeting capabilities, insufficient yield and scalability, etc., thus promoting the therapeutic pertinence and clinical potential of EV-based approaches in TE.
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Affiliation(s)
- Ziyin Pan
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
| | - Weiyan Sun
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
| | - Yi Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
| | - Hai Tang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
| | - Weikang Lin
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
| | - Jiafei Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
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