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Chakraborty AA, Rizwan K, Khetan JN, Scogin CK, Rutkowski JM. Characterization of Lymphangiogenesis in Adipose Tissue Upon Local, Induced VEGF‐D Overexpression. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.520.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- AA Chakraborty
- Division of Lymphatic BiologyDepartment of Medical PhysiologyTexas A&M College of MedicineCollege StationTX
| | - K Rizwan
- Division of Lymphatic BiologyDepartment of Medical PhysiologyTexas A&M College of MedicineCollege StationTX
| | - JN Khetan
- Division of Lymphatic BiologyDepartment of Medical PhysiologyTexas A&M College of MedicineCollege StationTX
| | - CK Scogin
- Division of Lymphatic BiologyDepartment of Medical PhysiologyTexas A&M College of MedicineCollege StationTX
| | - JM Rutkowski
- Division of Lymphatic BiologyDepartment of Medical PhysiologyTexas A&M College of MedicineCollege StationTX
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Chakraborty AA, Scuoppo C, Dey S, Thomas LR, Lorey SL, Lowe SW, Tansey WP. A common functional consequence of tumor-derived mutations within c-MYC. Oncogene 2014; 34:2406-9. [PMID: 24998853 PMCID: PMC4286529 DOI: 10.1038/onc.2014.186] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 05/06/2014] [Indexed: 11/09/2022]
Abstract
The relevance of changes to the coding sequence of the c-MYC oncogene to malignancy is controversial. Overexpression of a pristine form of MYC is observed in many cancers and is sufficient to drive tumorigenesis in most contexts. Yet missense changes to MYC are found in ~50% of Burkitt's lymphomas, aggregate within an amino-terminal degron important for proteasomal destruction of MYC, and where examined profoundly enhance the tumorigenic properties of MYC in vitro and in vivo. Much of the controversy surrounding these mutants stems from the limited number of mutations that have been evaluated and their clustering within a single region of the MYC protein; the highly-conserved Myc box I (MbI) element. Here, by analysis of extant genomic data sets, we identify a previously unrecognized hotspot for tumor-associated MYC mutations, located in a conserved central portion of the protein. We show that, despite their distal location in MYC, mutations in this region precisely phenocopy those in MbI in terms of stability, in vitro transformation, growth-promoting properties, in vivo tumorigenesis and ability to escape p53-dependent tumor surveillance mechanisms. The striking parallels between the behavior of tumor-derived mutations in disparate regions of the MYC protein reveals that a common molecular process is disrupted by these mutations, implying an active role for these mutations in tumorigenesis and suggesting that different therapeutic strategies may be needed for treatment of lymphomas expressing wild type versus mutant forms of MYC protein.
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Affiliation(s)
- A A Chakraborty
- 1] Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, NY, USA [2] Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - C Scuoppo
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, NY, USA
| | - S Dey
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - L R Thomas
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - S L Lorey
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - S W Lowe
- 1] Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, NY, USA [2] Howard Hughes Medical Institute, New York, NY, USA
| | - W P Tansey
- 1] Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, NY, USA [2] Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN, USA
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