Extracellular Vesicle Molecular Signatures Characterize Metastatic Dynamicity in Ovarian Cancer

BackgroundLate-stage diagnosis of ovarian cancer, a disease that originates in the ovaries and spreads to the peritoneal cavity, lowers 5-year survival rate from 90% to 30%. Early screening tools that can: i) detect with high specificity and sensitivity before conventional tools such as transvaginal...

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Autores principales: Amber Gonda, Nanxia Zhao, Jay V. Shah, Jake N. Siebert, Srujanesh Gunda, Berk Inan, Mijung Kwon, Steven K. Libutti, Prabhas V. Moghe, Nicola L. Francis, Vidya Ganapathy
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Publicado: Frontiers Media S.A. 2021
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Acceso en línea:https://doaj.org/article/4f7534a0ee9e4be0952e2d43d5e9bfdc
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spelling oai:doaj.org-article:4f7534a0ee9e4be0952e2d43d5e9bfdc2021-11-18T09:22:55ZExtracellular Vesicle Molecular Signatures Characterize Metastatic Dynamicity in Ovarian Cancer2234-943X10.3389/fonc.2021.718408https://doaj.org/article/4f7534a0ee9e4be0952e2d43d5e9bfdc2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fonc.2021.718408/fullhttps://doaj.org/toc/2234-943XBackgroundLate-stage diagnosis of ovarian cancer, a disease that originates in the ovaries and spreads to the peritoneal cavity, lowers 5-year survival rate from 90% to 30%. Early screening tools that can: i) detect with high specificity and sensitivity before conventional tools such as transvaginal ultrasound and CA-125, ii) use non-invasive sampling methods and iii) longitudinally significantly increase survival rates in ovarian cancer are needed. Studies that employ blood-based screening tools using circulating tumor-cells, -DNA, and most recently tumor-derived small extracellular vesicles (sEVs) have shown promise in non-invasive detection of cancer before standard of care. Our findings in this study show the promise of a sEV-derived signature as a non-invasive longitudinal screening tool in ovarian cancer.MethodsHuman serum samples as well as plasma and ascites from a mouse model of ovarian cancer were collected at various disease stages. Small extracellular vesicles (sEVs) were extracted using a commercially available kit. RNA was isolated from lysed sEVs, and quantitative RT-PCR was performed to identify specific metastatic gene expression.ConclusionThis paper highlights the potential of sEVs in monitoring ovarian cancer progression and metastatic development. We identified a 7-gene panel in sEVs derived from plasma, serum, and ascites that overlapped with an established metastatic ovarian carcinoma signature. We found the 7-gene panel to be differentially expressed with tumor development and metastatic spread in a mouse model of ovarian cancer. The most notable finding was a significant change in the ascites-derived sEV gene signature that overlapped with that of the plasma-derived sEV signature at varying stages of disease progression. While there were quantifiable changes in genes from the 7-gene panel in serum-derived sEVs from ovarian cancer patients, we were unable to establish a definitive signature due to low sample number. Taken together our findings show that differential expression of metastatic genes derived from circulating sEVs present a minimally invasive screening tool for ovarian cancer detection and longitudinal monitoring of molecular changes associated with progression and metastatic spread.Amber GondaNanxia ZhaoJay V. ShahJake N. SiebertJake N. SiebertSrujanesh GundaBerk InanMijung KwonSteven K. LibuttiPrabhas V. MoghePrabhas V. MogheNicola L. FrancisVidya GanapathyFrontiers Media S.A.articleextracellular vesicleexosomegene signaturesmetastasisovarian cancer 2Neoplasms. Tumors. Oncology. Including cancer and carcinogensRC254-282ENFrontiers in Oncology, Vol 11 (2021)
institution DOAJ
collection DOAJ
language EN
topic extracellular vesicle
exosome
gene signatures
metastasis
ovarian cancer 2
Neoplasms. Tumors. Oncology. Including cancer and carcinogens
RC254-282
spellingShingle extracellular vesicle
exosome
gene signatures
metastasis
ovarian cancer 2
Neoplasms. Tumors. Oncology. Including cancer and carcinogens
RC254-282
Amber Gonda
Nanxia Zhao
Jay V. Shah
Jake N. Siebert
Jake N. Siebert
Srujanesh Gunda
Berk Inan
Mijung Kwon
Steven K. Libutti
Prabhas V. Moghe
Prabhas V. Moghe
Nicola L. Francis
Vidya Ganapathy
Extracellular Vesicle Molecular Signatures Characterize Metastatic Dynamicity in Ovarian Cancer
description BackgroundLate-stage diagnosis of ovarian cancer, a disease that originates in the ovaries and spreads to the peritoneal cavity, lowers 5-year survival rate from 90% to 30%. Early screening tools that can: i) detect with high specificity and sensitivity before conventional tools such as transvaginal ultrasound and CA-125, ii) use non-invasive sampling methods and iii) longitudinally significantly increase survival rates in ovarian cancer are needed. Studies that employ blood-based screening tools using circulating tumor-cells, -DNA, and most recently tumor-derived small extracellular vesicles (sEVs) have shown promise in non-invasive detection of cancer before standard of care. Our findings in this study show the promise of a sEV-derived signature as a non-invasive longitudinal screening tool in ovarian cancer.MethodsHuman serum samples as well as plasma and ascites from a mouse model of ovarian cancer were collected at various disease stages. Small extracellular vesicles (sEVs) were extracted using a commercially available kit. RNA was isolated from lysed sEVs, and quantitative RT-PCR was performed to identify specific metastatic gene expression.ConclusionThis paper highlights the potential of sEVs in monitoring ovarian cancer progression and metastatic development. We identified a 7-gene panel in sEVs derived from plasma, serum, and ascites that overlapped with an established metastatic ovarian carcinoma signature. We found the 7-gene panel to be differentially expressed with tumor development and metastatic spread in a mouse model of ovarian cancer. The most notable finding was a significant change in the ascites-derived sEV gene signature that overlapped with that of the plasma-derived sEV signature at varying stages of disease progression. While there were quantifiable changes in genes from the 7-gene panel in serum-derived sEVs from ovarian cancer patients, we were unable to establish a definitive signature due to low sample number. Taken together our findings show that differential expression of metastatic genes derived from circulating sEVs present a minimally invasive screening tool for ovarian cancer detection and longitudinal monitoring of molecular changes associated with progression and metastatic spread.
format article
author Amber Gonda
Nanxia Zhao
Jay V. Shah
Jake N. Siebert
Jake N. Siebert
Srujanesh Gunda
Berk Inan
Mijung Kwon
Steven K. Libutti
Prabhas V. Moghe
Prabhas V. Moghe
Nicola L. Francis
Vidya Ganapathy
author_facet Amber Gonda
Nanxia Zhao
Jay V. Shah
Jake N. Siebert
Jake N. Siebert
Srujanesh Gunda
Berk Inan
Mijung Kwon
Steven K. Libutti
Prabhas V. Moghe
Prabhas V. Moghe
Nicola L. Francis
Vidya Ganapathy
author_sort Amber Gonda
title Extracellular Vesicle Molecular Signatures Characterize Metastatic Dynamicity in Ovarian Cancer
title_short Extracellular Vesicle Molecular Signatures Characterize Metastatic Dynamicity in Ovarian Cancer
title_full Extracellular Vesicle Molecular Signatures Characterize Metastatic Dynamicity in Ovarian Cancer
title_fullStr Extracellular Vesicle Molecular Signatures Characterize Metastatic Dynamicity in Ovarian Cancer
title_full_unstemmed Extracellular Vesicle Molecular Signatures Characterize Metastatic Dynamicity in Ovarian Cancer
title_sort extracellular vesicle molecular signatures characterize metastatic dynamicity in ovarian cancer
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/4f7534a0ee9e4be0952e2d43d5e9bfdc
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