Ras Post-transcriptionally Enhances a Pre-malignantly Primed EMT to Promote Invasion
Summary: Epithelial-to-mesenchymal transition (EMT) is integral to cancer progression, with considerable evidence that EMT has multiple intermediary stages. Understanding the mechanisms of this stepwise activation is of great interest. We recreated a genetically defined model in which primary cells...
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| Format: | Article |
| Language: | English |
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Elsevier
2018-06-01
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| Series: | iScience |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S258900421830066X |
| _version_ | 1818521580714590208 |
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| author | Laura S. Bisogno Matthew B. Friedersdorf Jack D. Keene |
| author_facet | Laura S. Bisogno Matthew B. Friedersdorf Jack D. Keene |
| author_sort | Laura S. Bisogno |
| collection | DOAJ |
| description | Summary: Epithelial-to-mesenchymal transition (EMT) is integral to cancer progression, with considerable evidence that EMT has multiple intermediary stages. Understanding the mechanisms of this stepwise activation is of great interest. We recreated a genetically defined model in which primary cells were immortalized, resulting in migratory capacity, and subsequently H-Ras-transformed, causing malignancy and invasion. To determine the mechanisms coordinating stepwise malignancy, we quantified the changes in messenger RNA (mRNA) and protein abundance. During immortalization, we found dramatic changes in mRNA, consistent with EMT, which correlated with protein abundance. Many of these same proteins also changed following Ras transformation, suggesting that pre-malignant cells were primed for malignant conversion. Unexpectedly, changes in protein abundance did not correlate with changes in mRNA following transformation. Importantly, proteins involved in cellular adhesion and cytoskeletal structure decreased during immortalization and decreased further following Ras transformation, whereas their encoding mRNAs only changed during the immortalization step. Thus, Ras induced EMT-associated invasion via post-transcriptional mechanisms in primed pre-malignant cells. : Molecular Network; Cancer Systems Biology; Transcriptomics Subject Areas: Molecular Network, Cancer Systems Biology, Transcriptomics |
| first_indexed | 2024-12-11T01:53:03Z |
| format | Article |
| id | doaj.art-f84b3c18abfc48a9806cb5ab6363f45a |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-12-11T01:53:03Z |
| publishDate | 2018-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-f84b3c18abfc48a9806cb5ab6363f45a2022-12-22T01:24:42ZengElsevieriScience2589-00422018-06-01497108Ras Post-transcriptionally Enhances a Pre-malignantly Primed EMT to Promote InvasionLaura S. Bisogno0Matthew B. Friedersdorf1Jack D. Keene2Department of Molecular Genetics & Microbiology, Duke University Medical Center, Durham, NC 27710, USADepartment of Molecular Genetics & Microbiology, Duke University Medical Center, Durham, NC 27710, USADepartment of Molecular Genetics & Microbiology, Duke University Medical Center, Durham, NC 27710, USA; Corresponding authorSummary: Epithelial-to-mesenchymal transition (EMT) is integral to cancer progression, with considerable evidence that EMT has multiple intermediary stages. Understanding the mechanisms of this stepwise activation is of great interest. We recreated a genetically defined model in which primary cells were immortalized, resulting in migratory capacity, and subsequently H-Ras-transformed, causing malignancy and invasion. To determine the mechanisms coordinating stepwise malignancy, we quantified the changes in messenger RNA (mRNA) and protein abundance. During immortalization, we found dramatic changes in mRNA, consistent with EMT, which correlated with protein abundance. Many of these same proteins also changed following Ras transformation, suggesting that pre-malignant cells were primed for malignant conversion. Unexpectedly, changes in protein abundance did not correlate with changes in mRNA following transformation. Importantly, proteins involved in cellular adhesion and cytoskeletal structure decreased during immortalization and decreased further following Ras transformation, whereas their encoding mRNAs only changed during the immortalization step. Thus, Ras induced EMT-associated invasion via post-transcriptional mechanisms in primed pre-malignant cells. : Molecular Network; Cancer Systems Biology; Transcriptomics Subject Areas: Molecular Network, Cancer Systems Biology, Transcriptomicshttp://www.sciencedirect.com/science/article/pii/S258900421830066X |
| spellingShingle | Laura S. Bisogno Matthew B. Friedersdorf Jack D. Keene Ras Post-transcriptionally Enhances a Pre-malignantly Primed EMT to Promote Invasion iScience |
| title | Ras Post-transcriptionally Enhances a Pre-malignantly Primed EMT to Promote Invasion |
| title_full | Ras Post-transcriptionally Enhances a Pre-malignantly Primed EMT to Promote Invasion |
| title_fullStr | Ras Post-transcriptionally Enhances a Pre-malignantly Primed EMT to Promote Invasion |
| title_full_unstemmed | Ras Post-transcriptionally Enhances a Pre-malignantly Primed EMT to Promote Invasion |
| title_short | Ras Post-transcriptionally Enhances a Pre-malignantly Primed EMT to Promote Invasion |
| title_sort | ras post transcriptionally enhances a pre malignantly primed emt to promote invasion |
| url | http://www.sciencedirect.com/science/article/pii/S258900421830066X |
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