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Enhancer Coamplification and Hijacking Promote Oncogene Expression in Liposarcoma

Liposarcoma (LPS) is the most common soft-tissue sarcoma in adults with two major subtypes, well differentiated and dedifferentiated. Both subtypes are characterized with the pathognomonic giant ring or marker chromosomes that harbor high copy numbers of known oncogenes. Here, we reported a comprehe...

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Autores principales: Liu, Tingting, Wang, Juan, Yang, Hongbo, Jin, Qiushi, Wang, Xiaotao, Fu, Yihao, Luan, Yu, Wang, Qixuan, Youngblood, Mark W., Lu, Xinyan, Casadei, Lucia, Pollock, Raphael, Yue, Feng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for Cancer Research 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10152236/
https://www.ncbi.nlm.nih.gov/pubmed/36847778
http://dx.doi.org/10.1158/0008-5472.CAN-22-1858
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author Liu, Tingting
Wang, Juan
Yang, Hongbo
Jin, Qiushi
Wang, Xiaotao
Fu, Yihao
Luan, Yu
Wang, Qixuan
Youngblood, Mark W.
Lu, Xinyan
Casadei, Lucia
Pollock, Raphael
Yue, Feng
author_facet Liu, Tingting
Wang, Juan
Yang, Hongbo
Jin, Qiushi
Wang, Xiaotao
Fu, Yihao
Luan, Yu
Wang, Qixuan
Youngblood, Mark W.
Lu, Xinyan
Casadei, Lucia
Pollock, Raphael
Yue, Feng
author_sort Liu, Tingting
collection PubMed
description Liposarcoma (LPS) is the most common soft-tissue sarcoma in adults with two major subtypes, well differentiated and dedifferentiated. Both subtypes are characterized with the pathognomonic giant ring or marker chromosomes that harbor high copy numbers of known oncogenes. Here, we reported a comprehensive molecular characterization of both tumor and normal tissues from the same patients with LPS, including whole-genome sequencing (WGS), transcriptome, enhancer landscape, and genome-wide three-dimensional (3D) genome structure by Hi-C. Tumor-specific transcripts and regulatory elements were identified, and enhancer coamplification and hijacking events were discovered as novel mechanisms upregulating oncogenes such as MDM2, CDK4, and HMGA2. Combining Hi-C, optical mapping, nanopore long reads, and WGS data partially resolved complex structural variations and reconstructed the local genome and the giant chromosome. Overall, this study provides a comprehensive resource for LPS research and offers insights into how altered enhancers and the 3D genome contribute to gene dysregulation in cancer. SIGNIFICANCE: Comprehensive profiling of the enhancer landscape and 3D genome structure in liposarcoma identifies extensive enhancer-oncogene coamplification and enhancer hijacking events, deepening the understanding of how oncogenes are regulated in cancer.
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spelling pubmed-101522362023-05-03 Enhancer Coamplification and Hijacking Promote Oncogene Expression in Liposarcoma Liu, Tingting Wang, Juan Yang, Hongbo Jin, Qiushi Wang, Xiaotao Fu, Yihao Luan, Yu Wang, Qixuan Youngblood, Mark W. Lu, Xinyan Casadei, Lucia Pollock, Raphael Yue, Feng Cancer Res Cancer Landscapes Liposarcoma (LPS) is the most common soft-tissue sarcoma in adults with two major subtypes, well differentiated and dedifferentiated. Both subtypes are characterized with the pathognomonic giant ring or marker chromosomes that harbor high copy numbers of known oncogenes. Here, we reported a comprehensive molecular characterization of both tumor and normal tissues from the same patients with LPS, including whole-genome sequencing (WGS), transcriptome, enhancer landscape, and genome-wide three-dimensional (3D) genome structure by Hi-C. Tumor-specific transcripts and regulatory elements were identified, and enhancer coamplification and hijacking events were discovered as novel mechanisms upregulating oncogenes such as MDM2, CDK4, and HMGA2. Combining Hi-C, optical mapping, nanopore long reads, and WGS data partially resolved complex structural variations and reconstructed the local genome and the giant chromosome. Overall, this study provides a comprehensive resource for LPS research and offers insights into how altered enhancers and the 3D genome contribute to gene dysregulation in cancer. SIGNIFICANCE: Comprehensive profiling of the enhancer landscape and 3D genome structure in liposarcoma identifies extensive enhancer-oncogene coamplification and enhancer hijacking events, deepening the understanding of how oncogenes are regulated in cancer. American Association for Cancer Research 2023-05-02 2023-02-27 /pmc/articles/PMC10152236/ /pubmed/36847778 http://dx.doi.org/10.1158/0008-5472.CAN-22-1858 Text en ©2023 The Authors; Published by the American Association for Cancer Research https://creativecommons.org/licenses/by-nc-nd/4.0/This open access article is distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) license.
spellingShingle Cancer Landscapes
Liu, Tingting
Wang, Juan
Yang, Hongbo
Jin, Qiushi
Wang, Xiaotao
Fu, Yihao
Luan, Yu
Wang, Qixuan
Youngblood, Mark W.
Lu, Xinyan
Casadei, Lucia
Pollock, Raphael
Yue, Feng
Enhancer Coamplification and Hijacking Promote Oncogene Expression in Liposarcoma
title Enhancer Coamplification and Hijacking Promote Oncogene Expression in Liposarcoma
title_full Enhancer Coamplification and Hijacking Promote Oncogene Expression in Liposarcoma
title_fullStr Enhancer Coamplification and Hijacking Promote Oncogene Expression in Liposarcoma
title_full_unstemmed Enhancer Coamplification and Hijacking Promote Oncogene Expression in Liposarcoma
title_short Enhancer Coamplification and Hijacking Promote Oncogene Expression in Liposarcoma
title_sort enhancer coamplification and hijacking promote oncogene expression in liposarcoma
topic Cancer Landscapes
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10152236/
https://www.ncbi.nlm.nih.gov/pubmed/36847778
http://dx.doi.org/10.1158/0008-5472.CAN-22-1858
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