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He M, Li Y, Li Y, Dong B, Yu H. Dynamics of Chromatin Opening across Larval Development in the Urochordate Ascidian Ciona savignyi. Int J Mol Sci 2024; 25:2793. [PMID: 38474039 DOI: 10.3390/ijms25052793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 02/20/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
Ascidian larvae undergo tail elongation and notochord lumenogenesis, making them an ideal model for investigating tissue morphogenesis in embryogenesis. The cellular and mechanical mechanisms of these processes have been studied; however, the underlying molecular regulatory mechanism remains to be elucidated. In this study, assays for transposase-accessible chromatin using sequencing (ATAC-seq) and RNA sequencing (RNA-seq) were applied to investigate potential regulators of the development of ascidian Ciona savignyi larvae. Our results revealed 351 and 138 differentially accessible region genes through comparisons of ATAC-seq data between stages 21 and 24 and between stages 24 and 25, respectively. A joint analysis of RNA-seq and ATAC-seq data revealed a correlation between chromatin accessibility and gene transcription. We further verified the tissue expression patterns of 12 different genes. Among them, Cs-matrix metalloproteinase 24 (MMP24) and Cs-krüppel-like factor 5 (KLF5) were highly expressed in notochord cells. Functional assay results demonstrated that both genes are necessary for notochord lumen formation and expansion. Finally, we performed motif enrichment analysis of the differentially accessible regions in different tailbud stages and summarized the potential roles of these motif-bearing transcription factors in larval development. Overall, our study found a correlation between gene expression and chromatin accessibility and provided a vital resource for understanding the mechanisms of the development of ascidian embryos.
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Affiliation(s)
- Muchun He
- Fang Zongxi Center for Marine EvoDevo, MoE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China
| | - Yuting Li
- Fang Zongxi Center for Marine EvoDevo, MoE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Yajuan Li
- Fang Zongxi Center for Marine EvoDevo, MoE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Bo Dong
- Fang Zongxi Center for Marine EvoDevo, MoE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao 266237, China
- MoE Key Laboratory of Evolution & Marine Biodiversity, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China
| | - Haiyan Yu
- Fang Zongxi Center for Marine EvoDevo, MoE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
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2
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Roy G, Syed R, Lazaro O, Robertson S, McCabe SD, Rodriguez D, Mawla AM, Johnson TS, Kalwat MA. Identification of type 2 diabetes- and obesity-associated human β-cells using deep transfer learning. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.18.576260. [PMID: 38328172 PMCID: PMC10849510 DOI: 10.1101/2024.01.18.576260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Diabetes affects >10% of adults worldwide and is caused by impaired production or response to insulin, resulting in chronic hyperglycemia. Pancreatic islet β-cells are the sole source of endogenous insulin and our understanding of β-cell dysfunction and death in type 2 diabetes (T2D) is incomplete. Single-cell RNA-seq data supports heterogeneity as an important factor in β-cell function and survival. However, it is difficult to identify which β-cell phenotypes are critical for T2D etiology and progression. Our goal was to prioritize specific disease-related β-cell subpopulations to better understand T2D pathogenesis and identify relevant genes for targeted therapeutics. To address this, we applied a deep transfer learning tool, DEGAS, which maps disease associations onto single-cell RNA-seq data from bulk expression data. Independent runs of DEGAS using T2D or obesity status identified distinct β-cell subpopulations. A singular cluster of T2D-associated β-cells was identified; however, β-cells with high obese-DEGAS scores contained two subpopulations derived largely from either non-diabetic or T2D donors. The obesity-associated non-diabetic cells were enriched for translation and unfolded protein response genes compared to T2D cells. We selected DLK1 for validation by immunostaining in human pancreas sections from healthy and T2D donors. DLK1 was heterogeneously expressed among β-cells and appeared depleted from T2D islets. In conclusion, DEGAS has the potential to advance our holistic understanding of the β-cell transcriptomic phenotypes, including features that distinguish β-cells in obese non-diabetic or lean T2D states. Future work will expand this approach to additional human islet omics datasets to reveal the complex multicellular interactions driving T2D.
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3
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Chen Y, Liu Y, Zhang R, Mao Y, He A, Liu W. Delta like Non-Canonical Notch Ligand 2 inhibits chondrogenic differentiation and cell proliferation of bone marrow mesenchymal stem cells through the Notch1 signaling pathway. Tissue Cell 2023; 85:102220. [PMID: 37776784 DOI: 10.1016/j.tice.2023.102220] [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: 12/18/2022] [Revised: 05/23/2023] [Accepted: 09/09/2023] [Indexed: 10/02/2023]
Abstract
Bone marrow mesenchymal stem cells (BMSCs) is the candidate for the treatment of cartilage defects because of their directional induction potential and natural anti-inflammatory properties. As one of the non-canonical receptors of Notch1, Delta Like Non-Canonical Notch Ligand 2 (DLK2) involves in stem cells' adipogenesis and chondrogenic differentiation. However, the specific regulatory mechanism of DLK2 in the chondrogenic differentiation of BMSCs is still unclear. In this study, we found that the expression of DLK2 was reduced and the expression of Col2a1, Col10a1, Acan, Sox9, and Notch1 was raised in the process of BMSCs chondrogenic differentiation. However, the expression of Col2a1, Col10a1, Acan, and Sox9 reduced significantly, and the signal factor Notch1 and the chondrogenic differentiation capacity of BMSCs turned down in the DLK2 overexpression group. Furthermore, the expression of Col2a1, Col10a1, Acan, and Sox9 significantly enhanced, Notch1 expression was also increased, and the chondrogenic differentiation capacity of BMSCs turned up in the DLK2 suppression group. Concurrently, the proliferation of BMSCs was weakened after overexpression of DLK2, and there was no significant change in cell migration. However, the proliferation and migration of BMSCs were significantly enhanced after the inhibition of DLK2 expression. Therefore, these results suggest that DLK2 negatively regulates chondrogenic differentiation and cell proliferation in BMSCs by inhibiting the Notch1 signaling pathway.
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Affiliation(s)
- Yanan Chen
- College of Food Sciences &Technology, Shanghai Ocean University, Shanghai, China; Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai, China
| | - Yaru Liu
- College of Food Sciences &Technology, Shanghai Ocean University, Shanghai, China; Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai, China
| | - Renbo Zhang
- College of Food Sciences &Technology, Shanghai Ocean University, Shanghai, China; Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai, China
| | - Yanjie Mao
- Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai, China
| | - Axiang He
- Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai, China.
| | - Wanjun Liu
- Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai, China.
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4
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Chen X, Chen X, Chao R, Wang Y, Mao Y, Fan B, Zhang Y, Xu W, Qin A, Zhang S. Dlk2 interacts with Syap1 to activate Akt signaling pathway during osteoclast formation. Cell Death Dis 2023; 14:589. [PMID: 37669921 PMCID: PMC10480461 DOI: 10.1038/s41419-023-06107-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/17/2023] [Accepted: 08/22/2023] [Indexed: 09/07/2023]
Abstract
Excessive osteoclast formation and bone resorption are related to osteolytic diseases. Delta drosophila homolog-like 2 (Dlk2), a member of the epidermal growth factor (EGF)-like superfamily, reportedly regulates adipocyte differentiation, but its roles in bone homeostasis are unclear. In this study, we demonstrated that Dlk2 deletion in osteoclasts significantly inhibited osteoclast formation in vitro and contributed to a high-bone-mass phenotype in vivo. Importantly, Dlk2 was shown to interact with synapse-associated protein 1 (Syap1), which regulates Akt phosphorylation at Ser473. Dlk2 deletion inhibited Syap1-mediated activation of the AktSer473, ERK1/2 and p38 signaling cascades. Additionally, Dlk2 deficiency exhibits increased bone mass in ovariectomized mice. Our results reveal the important roles of the Dlk2-Syap1 signaling pathway in osteoclast differentiation and osteoclast-related bone disorders.
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Affiliation(s)
- Xinwei Chen
- Department of Oral and Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China
| | - Xuzhuo Chen
- Department of Oral and Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China
| | - Rui Chao
- Department of Oral and Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China
| | - Yexin Wang
- Department of Oral and Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China
| | - Yi Mao
- Department of Oral and Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China
| | - Baoting Fan
- Department of Oral and Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China
| | - Yaosheng Zhang
- Department of Stomatology, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Weifeng Xu
- Department of Oral and Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China.
| | - An Qin
- Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Orthopaedic Implant, Shanghai, People's Republic of China.
| | - Shanyong Zhang
- Department of Oral and Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China.
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5
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Lee MG, Lee YK, Huang SC, Chang CL, Ko CY, Lee WC, Chen TY, Tzou SJ, Huang CY, Tai MH, Lin YW, Kung ML, Tsai MC, Chen YL, Chang YC, Wen ZH, Huang CC, Chu TH. DLK2 Acts as a Potential Prognostic Biomarker for Clear Cell Renal Cell Carcinoma Based on Bioinformatics Analysis. Genes (Basel) 2022; 13:genes13040629. [PMID: 35456435 PMCID: PMC9030291 DOI: 10.3390/genes13040629] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 03/26/2022] [Accepted: 03/28/2022] [Indexed: 02/07/2023] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is the most common RCC subtype with a high mortality. It has been reported that delta-like 1 homologue (DLK1) participates in the tumor microenvironmental remodeling of ccRCC, but the relationship between delta-like 2 homologue (DLK2, a DLK1 homologue) and ccRCC is still unclear. Thus, this study aims to investigate the role of DLK2 in the biological function and disease prognosis of ccRCC using bioinformatics analysis. The TNMplot database showed that DLK2 was upregulated in ccRCC tissues. From the UALCAN analysis, the overexpression of DLK2 was associated with advanced stage and high grade in ccRCC. Moreover, the Kaplan-Meier plotter (KM Plotter) database showed that DLK2 upregulation was associated with poor survival outcome in ccRCC. By the LinkedOmics analysis, DLK2 signaling may participated in the modulation of ccRCC extracellular matrix (ECM), cell metabolism, ribosome biogenesis, TGF-β signaling and Notch pathway. Besides, Tumor Immune Estimation Resource (TIMER) analysis showed that the macrophage and CD8+ T cell infiltrations were associated with good prognosis in ccRCC patients. Finally, DLK2 overexpression was associated with the reduced macrophage recruitments and the M1–M2 polarization of macrophage in ccRCC tissues. Together, DLK2 may acts as a novel biomarker, even therapeutic target in ccRCC. However, this study lacks experimental validation, and further studies are required to support this viewpoint.
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Affiliation(s)
- Man-Gang Lee
- Department of Surgery, Division of Urology, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan;
- Department of Surgery, Division of Urology, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 81342, Taiwan
| | - Yung-Kuo Lee
- Medical Laboratory, Medical Education and Research Center, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan;
| | - Shih-Chung Huang
- Department of Internal Medicine, Division of Cardiology, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan;
- Department of Internal Medicine, Division of Cardiology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (C.-L.C.); (C.-Y.K.); (S.-J.T.)
| | - Chen-Lin Chang
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (C.-L.C.); (C.-Y.K.); (S.-J.T.)
- Department of Psychiatry, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan
| | - Chou-Yuan Ko
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (C.-L.C.); (C.-Y.K.); (S.-J.T.)
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
| | - Wen-Chin Lee
- Department of Internal Medicine, Division of Nephrology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan;
| | - Tung-Yuan Chen
- Department of Surgery, Division of Colorectal Surgery, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan;
| | - Shiow-Jyu Tzou
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (C.-L.C.); (C.-Y.K.); (S.-J.T.)
- Department of Nursing, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan
| | - Cheng-Yi Huang
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (C.-Y.H.); (M.-H.T.)
- Department of Pathology, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan
| | - Ming-Hong Tai
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (C.-Y.H.); (M.-H.T.)
- Center for Neuroscience, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Yu-Wei Lin
- Department of Radiation Oncology, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan;
| | - Mei-Lang Kung
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan;
| | - Ming-Chao Tsai
- Department of Internal Medicine, Division of Hepato-Gastroenterology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan;
| | - Yung-Lung Chen
- Section of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan;
| | - Yi-Chen Chang
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University and Academia Sinica, Kaohsiung 80424, Taiwan;
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 80424, Taiwan;
| | - Chao-Cheng Huang
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Biobank and Tissue Bank, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
- Correspondence: (C.-C.H.); (T.-H.C.); Tel.: +886-7-731-7123 (ext. 2557) (C.-C.H.); +886-7-749-6751 (ext. 726201) (T.-H.C.)
| | - Tian-Huei Chu
- Medical Laboratory, Medical Education and Research Center, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan;
- Correspondence: (C.-C.H.); (T.-H.C.); Tel.: +886-7-731-7123 (ext. 2557) (C.-C.H.); +886-7-749-6751 (ext. 726201) (T.-H.C.)
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6
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Naranjo AI, González-Gómez MJ, Baladrón V, Laborda J, Nueda ML. Different Expression Levels of DLK2 Inhibit NOTCH Signaling and Inversely Modulate MDA-MB-231 Breast Cancer Tumor Growth In Vivo. Int J Mol Sci 2022; 23:1554. [PMID: 35163478 PMCID: PMC8836183 DOI: 10.3390/ijms23031554] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/21/2022] [Accepted: 01/27/2022] [Indexed: 11/22/2022] Open
Abstract
NOTCH signaling is implicated in the development of breast cancer tumors. DLK2, a non-canonical inhibitor of NOTCH signaling, was previously shown to be involved in skin and breast cancer. In this work, we studied whether different levels of DLK2 expression influenced the breast cancer characteristics of MDA-MB-231 cells. We found that DLK2 overexpression inhibited NOTCH activation in a dose-dependent manner. Moreover, depending on the level of inhibition of NOTCH1 activation generated by different levels of DLK2 expression, cell proliferation, cell cycle dynamics, cell apoptosis, cell migration, and tumor growth in vivo were affected in opposite directions. Low levels of DLK2 expression produced a slight inhibition of NOTCH1 activation, and enhanced MDA-MB-231 cell invasion in vitro and cell proliferation both in vitro and in vivo. In contrast, MDA-MB-231 cells expressing elevated levels of DLK2 showed a strong inhibition of NOTCH1 activation, decreased cell proliferation, increased cell apoptosis, and were unable to generate tumors in vivo. In addition, DLK2 expression levels also affected some members of other cell signaling pathways implicated in cancer, such as ERK1/2 MAPK, AKT, and rpS6 kinases. Our data support an important role of DLK2 as a protein that can finely regulate NOTCH signaling and affect the tumor properties and growth dynamics of MDA-MB-231 breast cancer cells.
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Affiliation(s)
- Ana-Isabel Naranjo
- Biochemistry and Molecular Biology Branch, Medical School/CRIB/Biomedicine Unit, Department of Inorganic and Organic Chemistry and Biochemistry, University of Castilla-La Mancha (UCLM)/CSIC, 02008 Albacete, Spain; (A.-I.N.); (V.B.)
| | - María-Julia González-Gómez
- Biochemistry and Molecular Biology Branch, Higher Technical School of Agricultural and Forestry Engineering/CRIB/Biomedicine Unit, Department of Inorganic and Organic Chemistry and Biochemistry, University of Castilla-La Mancha (UCLM)/CSIC, 02008 Albacete, Spain;
| | - Victoriano Baladrón
- Biochemistry and Molecular Biology Branch, Medical School/CRIB/Biomedicine Unit, Department of Inorganic and Organic Chemistry and Biochemistry, University of Castilla-La Mancha (UCLM)/CSIC, 02008 Albacete, Spain; (A.-I.N.); (V.B.)
| | - Jorge Laborda
- Biochemistry and Molecular Biology Branch, School of Pharmacy/CRIB/Biomedicine Unit, Department of Inorganic and Organic Chemistry and Biochemistry, University of Castilla-La Mancha (UCLM)/CSIC, 02008 Albacete, Spain
| | - María-Luisa Nueda
- Biochemistry and Molecular Biology Branch, School of Pharmacy/CRIB/Biomedicine Unit, Department of Inorganic and Organic Chemistry and Biochemistry, University of Castilla-La Mancha (UCLM)/CSIC, 02008 Albacete, Spain
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7
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Rodríguez-Cano MM, González-Gómez MJ, Sánchez-Solana B, Monsalve EM, Díaz-Guerra MJM, Laborda J, Nueda ML, Baladrón V. NOTCH Receptors and DLK Proteins Enhance Brown Adipogenesis in Mesenchymal C3H10T1/2 Cells. Cells 2020; 9:cells9092032. [PMID: 32899774 PMCID: PMC7565505 DOI: 10.3390/cells9092032] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 08/27/2020] [Accepted: 09/03/2020] [Indexed: 12/26/2022] Open
Abstract
The NOTCH family of receptors and ligands is involved in numerous cell differentiation processes, including adipogenesis. We recently showed that overexpression of each of the four NOTCH receptors in 3T3-L1 preadipocytes enhances adipogenesis and modulates the acquisition of the mature adipocyte phenotype. We also revealed that DLK proteins modulate the adipogenesis of 3T3-L1 preadipocytes and mesenchymal C3H10T1/2 cells in an opposite way, despite their function as non-canonical inhibitory ligands of NOTCH receptors. In this work, we used multipotent C3H10T1/2 cells as an adipogenic model. We used standard adipogenic procedures and analyzed different parameters by using quantitative-polymerase chain reaction (qPCR), quantitative reverse transcription-polymerase chain reaction (qRT-PCR), luciferase, Western blot, and metabolic assays. We revealed that C3H10T1/2 multipotent cells show higher levels of NOTCH receptors expression and activity and lower Dlk gene expression levels than 3T3-L1 preadipocytes. We found that the overexpression of NOTCH receptors enhanced C3H10T1/2 adipogenesis levels, and the overexpression of NOTCH receptors and DLK (DELTA-like homolog) proteins modulated the conversion of cells towards a brown-like adipocyte phenotype. These and our prior results with 3T3-L1 preadipocytes strengthen the idea that, depending on the cellular context, a precise and highly regulated level of global NOTCH signaling is necessary to allow adipogenesis and determine the mature adipocyte phenotype.
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Affiliation(s)
- María-Milagros Rodríguez-Cano
- Departamento de Química Inorgánica, Laboratorio de Bioquímica y Biología Molecular, Facultad de Farmacia/CRIB/Unidad de Biomedicina, Orgánica y Bioquímica, Universidad de Castilla-La Mancha/CSIC, C/Almansa 14, 02008 Albacete, Spain; (M.-M.R.-C.); (M.-J.G.-G.)
| | - María-Julia González-Gómez
- Departamento de Química Inorgánica, Laboratorio de Bioquímica y Biología Molecular, Facultad de Farmacia/CRIB/Unidad de Biomedicina, Orgánica y Bioquímica, Universidad de Castilla-La Mancha/CSIC, C/Almansa 14, 02008 Albacete, Spain; (M.-M.R.-C.); (M.-J.G.-G.)
| | - Beatriz Sánchez-Solana
- National Institutes of Health, Laboratory of Cellular Oncology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA;
| | - Eva-María Monsalve
- Departamento de Química Inorgánica, Laboratorio de Bioquímica y Biología Molecular, Facultad de Medicina de Albacete/CRIB/Unidad de Biomedicina, Orgánica y Bioquímica, Universidad de Castilla-La Mancha/CSIC, C/Almansa 14, 02008 Albacete, Spain; (E.-M.M.); (M.-J.M.D.-G.)
| | - María-José M. Díaz-Guerra
- Departamento de Química Inorgánica, Laboratorio de Bioquímica y Biología Molecular, Facultad de Medicina de Albacete/CRIB/Unidad de Biomedicina, Orgánica y Bioquímica, Universidad de Castilla-La Mancha/CSIC, C/Almansa 14, 02008 Albacete, Spain; (E.-M.M.); (M.-J.M.D.-G.)
| | - Jorge Laborda
- Departamento de Química Inorgánica, Laboratorio de Bioquímica y Biología Molecular, Facultad de Farmacia/CRIB/Unidad de Biomedicina, Orgánica y Bioquímica, Universidad de Castilla-La Mancha/CSIC, C/Almansa 14, 02008 Albacete, Spain; (M.-M.R.-C.); (M.-J.G.-G.)
- Correspondence: (J.L.); (M.-L.N.); (V.B.); Tel.: +34-967-599-200 (ext. 2926) (V.B.); Fax: +34-967-599-327 (V.B.)
| | - María-Luisa Nueda
- Departamento de Química Inorgánica, Laboratorio de Bioquímica y Biología Molecular, Facultad de Farmacia/CRIB/Unidad de Biomedicina, Orgánica y Bioquímica, Universidad de Castilla-La Mancha/CSIC, C/Almansa 14, 02008 Albacete, Spain; (M.-M.R.-C.); (M.-J.G.-G.)
- Correspondence: (J.L.); (M.-L.N.); (V.B.); Tel.: +34-967-599-200 (ext. 2926) (V.B.); Fax: +34-967-599-327 (V.B.)
| | - Victoriano Baladrón
- Departamento de Química Inorgánica, Laboratorio de Bioquímica y Biología Molecular, Facultad de Medicina de Albacete/CRIB/Unidad de Biomedicina, Orgánica y Bioquímica, Universidad de Castilla-La Mancha/CSIC, C/Almansa 14, 02008 Albacete, Spain; (E.-M.M.); (M.-J.M.D.-G.)
- Correspondence: (J.L.); (M.-L.N.); (V.B.); Tel.: +34-967-599-200 (ext. 2926) (V.B.); Fax: +34-967-599-327 (V.B.)
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8
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Keyghobadi F, Mehdipour M, Nekoukar V, Firouzi J, Kheimeh A, Nobakht Lahrood F, Azimian Zavareh V, Azimi M, Mohammadi M, Sodeifi N, Ebrahimi M. Long-Term Inhibition of Notch in A-375 Melanoma Cells Enhances Tumor Growth Through the Enhancement of AXIN1, CSNK2A3, and CEBPA2 as Intermediate Genes in Wnt and Notch Pathways. Front Oncol 2020; 10:531. [PMID: 32695658 PMCID: PMC7338939 DOI: 10.3389/fonc.2020.00531] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 03/25/2020] [Indexed: 12/14/2022] Open
Abstract
Notch suppression by gamma-secretase inhibitors is a valid approach against melanoma. However, most of studies have evaluated the short-term effect of DAPT on tumor cells or even cancer stem cells. In the present study, we surveyed the short-term and long-term effects of DAPT on the stem cell properties of A375 and NA8 as melanoma cell lines. The effects of DAPT were tested both in vitro and in vivo using xenograft models. In A375 with B-raf mutation, DAPT decreased the level of NOTCH1, NOTH2, and HES1 as downstream genes of the Notch pathway. This was accompanied by enhanced apoptosis after 24 h treatment, arrest in the G2−M phase, and impaired ability of colony and melanosphere formation at the short term. Moreover, tumor growth also reduced during 13 days of treatment. However, long-term treatment of DAPT promoted tumor growth in the xenograft model and enhanced the number and size of colonies and spheroids in vitro. The gene expression studies confirmed the up-regulation of Wnt and Notch downstream genes as well as AXIN1, CSNK2A3, and CEBPA2 following the removal of Notch inhibitor in vitro and in the xenograft model. Moreover, the Gompertz-based mathematical model determined a new drug resistance term in the present study. Our data supported that the long-term and not short-term inhibition of Notch by DAPT may enhance tumor growth and motility through up-regulation of AXIN1, CSNK2A3, and CEBPA2 genes in B-raf mutated A375 cells.
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Affiliation(s)
- Faezeh Keyghobadi
- Department of Developmental Biology, University of Science and Culture, ACECR, Tehran, Iran.,Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Maryam Mehdipour
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Vahab Nekoukar
- School of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran
| | - Javad Firouzi
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Abolfazl Kheimeh
- Animal Core Facility, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Tehran, Iran
| | - Fatemeh Nobakht Lahrood
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Vajihe Azimian Zavareh
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Masoumeh Azimi
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mahsa Mohammadi
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Niloofar Sodeifi
- Department of Pathology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Marzieh Ebrahimi
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
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9
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MicroRNA-127 Inhibits the Progression of Melanoma by Downregulating Delta-Like Homologue 1. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8523465. [PMID: 32051829 PMCID: PMC6995326 DOI: 10.1155/2020/8523465] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/10/2019] [Indexed: 12/19/2022]
Abstract
Objective Melanoma is the most common form of skin cancer with low survival rate and poor prognosis. MicroRNAs (miRNAs) have been reported to play essential roles in progression of melanoma. However, the role and mechanism of miR-127 in the process of melanoma remain poorly understood. Methods The expressions of miR-127 and delta-like homologue 1 (DLK1) were measured in melanoma tissues and cells by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot. Cell proliferation and apoptosis were measured by MTT assay, flow cytometry, and Western blot. The interaction between miR-127 and DLK1 was investigated by bioinformatics analysis, luciferase activity assay, and RNA immunoprecipitation (RIP). Murine xenograft model was conducted to investigate the effect of miR-127 on tumor growth in vivo. Results miR-127 was inhibited and DLK1 mRNA was enhanced in melanoma tissues and cells. Low abundance of miR-127 in melanoma tissues predicted a poor prognosis and was associated with the malignant clinicopathological features. Overexpression of miR-127 inhibited cell proliferation and induced apoptosis in melanoma cells. Moreover, DLK1 was targeted by miR-127 and its restoration reversed the regulatory effect of miR-127 on the process of melanoma. Besides, the addition of miR-127 suppressed xenograft tumor growth via suppressing DLK1 protein level in nude mice. Conclusion miR-127 blocked the development of melanoma by targeting DLK1, providing a novel biomarker for the treatment of melanoma.
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10
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Wu J, Zhang Y, Li M. Identification of Methylation Markers and Differentially Expressed Genes with Prognostic Value in Breast Cancer. J Comput Biol 2019; 26:1394-1408. [PMID: 31290690 DOI: 10.1089/cmb.2019.0179] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Breast cancer is one of the most common cancers causing a high mortality worldwide. This study aimed to identify differential methylation and expression genes with prognostic value in breast cancer. DNA methylation and gene expression profiles (GSE60185, GSE42568, GSE21653, GSE58812, and GSE52865) were downloaded from TCGA (The Cancer Genome Atlas) and GEO (Gene Expression Omnibus) databases. The differentially expressed genes (DEGs) and differential methylation genes were identified between breast cancer samples and normal samples. Functional analysis was performed using DAVID (Database for Annotation, Visualization, and Integrated Discovery) tool. Furthermore, functional epigenetic modules (FEM) were analyzed to identify critical genes with prognostic values. A large amount of DEGs and aberrant methylation genes were identified between breast cancer samples and normal samples. These genes were mainly associated with several GO (Gene Ontology) terms and KEGG (Kyoto Encyclopedia of Genes and Genomes) pathways, such as neuroactive ligand-receptor interaction, alcoholism, gamma-aminobutyric acid signaling pathway, and G-protein-coupled receptor signaling pathway. Additionally, 10 DEGs with differential methylation levels were significantly correlated with survival outcomes in breast cancer patients. FEM analysis revealed that several DEGs (e.g., GABRA4, GABRG1, and GABRA1) in module GABRA4 were identified as potential biomarkers in breast cancer patients. Several DEGs identified were associated with breast cancer prognosis. These DEGs might act as prognostic and diagnostic markers in breast cancer.
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Affiliation(s)
- Jie Wu
- Key Laboratory of Hydrodynamics (Ministry of Education), School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yijian Zhang
- Shanghai Research Center of Biliary Tract Disease, Shanghai, China.,Shanghai Key Laboratory of Biliary Tract Disease Research, Shanghai, China
| | - Maolan Li
- Shanghai Research Center of Biliary Tract Disease, Shanghai, China
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11
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Traustadóttir GÁ, Lagoni LV, Ankerstjerne LBS, Bisgaard HC, Jensen CH, Andersen DC. The imprinted gene Delta like non-canonical Notch ligand 1 (Dlk1) is conserved in mammals, and serves a growth modulatory role during tissue development and regeneration through Notch dependent and independent mechanisms. Cytokine Growth Factor Rev 2019; 46:17-27. [DOI: 10.1016/j.cytogfr.2019.03.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/21/2019] [Accepted: 03/21/2019] [Indexed: 12/22/2022]
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12
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Delta-like 1 homologue promotes tumorigenesis and epithelial-mesenchymal transition of ovarian high-grade serous carcinoma through activation of Notch signaling. Oncogene 2019; 38:3201-3215. [PMID: 30626939 DOI: 10.1038/s41388-018-0658-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 10/26/2018] [Accepted: 12/04/2018] [Indexed: 01/07/2023]
Abstract
Ovarian carcinoma is the most lethal type of gynecologic malignancies. Alterations of Notch pathway are prevalent in ovarian carcinogenesis. This study investigated the expression profile and function of delta-like 1 homolog (DLK1), a non-canonical Notch ligand, during ovarian carcinogenesis. Tissue microarray (TMA) consisting of surgically resected samples from 221 patients with ovarian carcinoma was constructed for DLK1 expression. DLK1 overexpression or knockdown was achieved by adenovirus gene delivery to evaluate the effect of DLK1 on the oncogenic behaviors in ovarian cancer cells and in xenografted tumors. TMA analysis revealed that elevated DLK1 expression was correlated with stages, lymph node metastasis and E-cadherin downregulation. Despite no influence on survival among ovarian carcinoma patients, DLK1 overexpression was specially associated with overall survival and progression free survival in high-grade serous carcinoma (HGSC) patients, constituting an independent prognostic factor for these patients. By adenovirus gene delivery, it was found modulation of cellular DLK1 level regulated the tumorigenic behaviors and epithelial-mesenchymal transition (EMT) in vitro and in vivo. Immunohistochemical analysis further showed that DLK1 overexpression resulted in escalated proliferation, angiogenesis, EMT and Notch activities. Application of recombinant DLK1 extracellular domain (rDLK1-EC) recapitulated the tumorigenic behaviors of DLK1 in ovarian cancer cells. By using neutralizing antibody or pharmaceutical inhibitor, blockade of Notch signaling attenuated the tumorigenic behaviors evoked by DLK1 overexpression. The present study indicates that DLK1 overexpression participates in ovarian carcinogenesis through Notch activation and EMT induction. Moreover, DLK1 may constitute a novel diagnostic biomarker and therapeutic target for HGSC.
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13
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Nueda ML, González-Gómez MJ, Rodríguez-Cano MM, Monsalve EM, Díaz-Guerra MJM, Sánchez-Solana B, Laborda J, Baladrón V. DLK proteins modulate NOTCH signaling to influence a brown or white 3T3-L1 adipocyte fate. Sci Rep 2018; 8:16923. [PMID: 30446682 PMCID: PMC6240076 DOI: 10.1038/s41598-018-35252-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 11/01/2018] [Indexed: 02/05/2023] Open
Abstract
The role of NOTCH signaling in adipogenesis is highly controversial, with data indicating null, positive or negative effects on this differentiation process. We hypothesize that these contradictory results could be due to the different global NOTCH signaling levels obtained in different experimental settings, because of a specific modulation of NOTCH receptors’ activity by their ligands. We have previously demonstrated that DLK1 and DLK2, two non-canonical NOTCH1 ligands that inhibit NOTCH1 signaling in a dose-dependent manner, modulate the adipogenesis process of 3T3-L1 preadipocytes. In this work, we show that over-expression of any of the four NOTCH receptors enhanced adipogenesis of 3T3-L1 preadipocytes. We also determine that DLK proteins inhibit not only the activity of NOTCH1, but also the activity of NOTCH2, 3 and 4 receptors to different degrees. Interestingly, we have observed, by different approaches, that NOTCH1 over-expression seems to stimulate the differentiation of 3T3-L1 cells towards a brown-like adipocyte phenotype, whereas cells over-expressing NOTCH2, 3 or 4 receptors or DLK proteins would rather differentiate towards a white-like adipocyte phenotype. Finally, our data also demonstrate a complex feed-back mechanism involving Notch and Dlk genes in the regulation of their expression, which suggest that a precise level of global NOTCH expression and NOTCH-dependent transcriptional activity of specific targets could be necessary to determine the final phenotype of 3T3-L1 adipocytes.
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Affiliation(s)
- María-Luisa Nueda
- Área de Bioquímica y Biología Molecular, Dpto. Química Inorgánica y Bioquímica, Facultad de Farmacia/CRIB/Unidad de Biomedicina, Universidad de Castilla-La Mancha/CSIC. C/Almansa 14, 02008, Albacete, Spain
| | - María-Julia González-Gómez
- Área de Bioquímica y Biología Molecular, Dpto. Química Inorgánica y Bioquímica, Facultad de Farmacia/CRIB/Unidad de Biomedicina, Universidad de Castilla-La Mancha/CSIC. C/Almansa 14, 02008, Albacete, Spain
| | - María-Milagros Rodríguez-Cano
- Área de Bioquímica y Biología Molecular, Dpto. Química Inorgánica y Bioquímica, Facultad de Farmacia/CRIB/Unidad de Biomedicina, Universidad de Castilla-La Mancha/CSIC. C/Almansa 14, 02008, Albacete, Spain
| | - Eva-María Monsalve
- Área de Bioquímica y Biología Molecular, Dpto. Química Inorgánica, Orgánica y Bioquímica, Facultad de Medicina de Albacete/CRIB/Unidad de Biomedicina, Universidad de Castilla-La Mancha/CSIC, C/Almansa 14, 02008, Albacete, Spain
| | - María José M Díaz-Guerra
- Área de Bioquímica y Biología Molecular, Dpto. Química Inorgánica, Orgánica y Bioquímica, Facultad de Medicina de Albacete/CRIB/Unidad de Biomedicina, Universidad de Castilla-La Mancha/CSIC, C/Almansa 14, 02008, Albacete, Spain
| | - Beatriz Sánchez-Solana
- Laboratory of Cellular Oncology, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Jorge Laborda
- Área de Bioquímica y Biología Molecular, Dpto. Química Inorgánica y Bioquímica, Facultad de Farmacia/CRIB/Unidad de Biomedicina, Universidad de Castilla-La Mancha/CSIC. C/Almansa 14, 02008, Albacete, Spain
| | - Victoriano Baladrón
- Área de Bioquímica y Biología Molecular, Dpto. Química Inorgánica, Orgánica y Bioquímica, Facultad de Medicina de Albacete/CRIB/Unidad de Biomedicina, Universidad de Castilla-La Mancha/CSIC, C/Almansa 14, 02008, Albacete, Spain.
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14
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García-Gutiérrez MS, Navarrete F, Laborda J, Manzanares J. Deletion of Dlk1 increases the vulnerability to developing anxiety-like behaviors and ethanol consumption in mice. Biochem Pharmacol 2018; 158:37-44. [PMID: 30268817 DOI: 10.1016/j.bcp.2018.09.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 09/26/2018] [Indexed: 12/18/2022]
Abstract
Anxiety and alcohol use disorders (AUD) often present together, constituting a significant public health problem worldwide. In this study, we investigated the role of DLK1, a ligand of the Delta/NOTCH epidermal growth factor (EGF)-like protein family, reported to play a role in DA neurons differentiation in the striatum, as a neurobiological factor involved in the mechanisms regulating this psychiatric comorbidity. We exposed Dlk1 knockout mice (Dlk1-/- mice) to the open-field (OF), the light-dark box (LBD) and the elevated plus maze (EPM) tests, evaluating motivation to drink and ethanol consumption using the oral ethanol self-administration (OEA) paradigm. Quantitative real time polymerase chain reaction (qPCR) studies were carried out to evaluate alterations in targets closely related to DA neurotransmission in the reward system, tyrosine hydroxylase (Th) in the ventral tegmental area (VTA), and μ-opioid receptor (Oprm1) in the nucleus accumbens (NAc). No differences were observed in the total or peripheral distances travelled by Dlk1-/- compared to wild-type (WT) mice in OF. However, central distance travelled significantly decreased in Dlk1-/- mice. Deletion of Dlk1 increased anxiety-like behaviors in the LDB and EPM, and, Dlk1-/- mice also presented higher ethanol intake and motivation to drink (number of effective responses) in the OEA. In addition, Th and Oprm1 gene expression was reduced in the VTA and NAc of Dlk1-/- mice. We conclude that deletion of Dlk1 increases anxiety-related behaviors and vulnerability to ethanol consumption and modifies the gene expression of key targets closely related with DA neurotransmission involved in the reinforcing actions of ethanol.
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Affiliation(s)
- María S García-Gutiérrez
- Institute of Neurosciences, Miguel Hernández University-CSIC, Avda de Ramón y Cajal s/n, San Juan de Alicante, 03550 Alicante, Spain; Topic-based Network for Cooperative Health Research (RETICS), Substance Abuse Network, Health Institute Carlos III, MICINN and FEDER, Madrid, Spain
| | - Francisco Navarrete
- Institute of Neurosciences, Miguel Hernández University-CSIC, Avda de Ramón y Cajal s/n, San Juan de Alicante, 03550 Alicante, Spain; Topic-based Network for Cooperative Health Research (RETICS), Substance Abuse Network, Health Institute Carlos III, MICINN and FEDER, Madrid, Spain
| | - Jorge Laborda
- School of Pharmacy, Regional Center for Biomedical Research (CRIB), Biomedicine Unit UCLM-CSIC, Albacete, Spain
| | - Jorge Manzanares
- Institute of Neurosciences, Miguel Hernández University-CSIC, Avda de Ramón y Cajal s/n, San Juan de Alicante, 03550 Alicante, Spain; Topic-based Network for Cooperative Health Research (RETICS), Substance Abuse Network, Health Institute Carlos III, MICINN and FEDER, Madrid, Spain.
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15
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Gazdar AF, Bunn PA, Minna JD. Small-cell lung cancer: what we know, what we need to know and the path forward. Nat Rev Cancer 2017; 17:725-737. [PMID: 29077690 DOI: 10.1038/nrc.2017.87] [Citation(s) in RCA: 423] [Impact Index Per Article: 60.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Small-cell lung cancer (SCLC) is a deadly tumour accounting for approximately 15% of lung cancers and is pathologically, molecularly, biologically and clinically very different from other lung cancers. While the majority of tumours express a neuroendocrine programme (integrating neural and endocrine properties), an important subset of tumours have low or absent expression of this programme. The probable initiating molecular events are inactivation of TP53 and RB1, as well as frequent disruption of several signalling networks, including Notch signalling. SCLC, when diagnosed, is usually widely metastatic and initially responds to cytotoxic therapy but nearly always rapidly relapses with resistance to further therapies. There were no important therapeutic clinical advances for 30 years, leading SCLC to be designated a 'recalcitrant cancer'. Scientific studies are hampered by a lack of tissue availability. However, over the past 5 years, there has been a worldwide resurgence of studies on SCLC, including comprehensive molecular analyses, the development of relevant genetically engineered mouse models and the establishment of patient-derived xenografts. These studies have led to the discovery of new potential therapeutic vulnerabilities for SCLC and therefore to new clinical trials. Thus, while the past has been bleak, the future offers greater promise.
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Affiliation(s)
- Adi F Gazdar
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75230-8593, USA
- Department of Pathology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75230-8593, USA
| | - Paul A Bunn
- Division of Medical Oncology, University of Colorado Cancer Center, 12801 East 17th Avenue, Aurora, Colorado 80045, USA
| | - John D Minna
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75230-8593, USA
- Departments of Internal Medicine and Pharmacology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75230-8593, USA
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16
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Xu W, Wang Y, Zhao H, Fan B, Guo K, Cai M, Zhang S. Delta-like 2 negatively regulates chondrogenic differentiation. J Cell Physiol 2017; 233:6574-6582. [PMID: 29057471 DOI: 10.1002/jcp.26244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Accepted: 10/13/2017] [Indexed: 01/21/2023]
Abstract
Delta-like 2 (Dlk2), a glycoprotein highly homologous to Dlk1, belongs to the Notch/Delta/Serrata family. Dlk2 has been shown to be an important regulator of adipogenesis; however, its role in other cellular differentiation processes is still unknown. Therefore, in this study, we aimed to determine the role of Dlk2 in chondrogenic differentiation. We found that Dlk2 overexpression promoted the growth of ATDC5 cells but inhibited insulin-induced ATDC5 chondrogenic differentiation, as supported by the reduction in cartilage matrix formation and gene expression of aggrecan (acan), collagentype II (col2a1) and X (col10a1). In contrast, Dlk2 silencing inhibited the proliferation of ATDC5 cells but enhanced their chondrogenic differentiation. We then evaluated the roles of mitogen-activated protein kinases (MAPKs), which are activated by insulin during the chondrogenesis of ATDC5 cells. Overexpression of Dlk2 protein strongly promoted the activation of p38, but not extracellular signal-regulated kinase (ERK) 1/2 and c-Jun N-terminal kinase (JNK). Moreover, as expected, Dlk2 silencing inhibited the activation of p38, but had no effect on the ERK1/2 and JNK pathways. Finally, we also detected the expression of Dlk2 in mouse epiphyseal cartilage during embryo development. The expression of the Dlk2 protein in the limb bud could be detected at embryonic day 11.5; additionally, it was found to decrease in the superficial zones, but remained unchanged in the deep/hypertrophic zones. In conclusion, our results suggested that Dlk2 acted as an important regulator of chondrogenesis through the p38 pathway. These findings may lead to strategies for the treatment of cartilage-related diseases such as osteoarthritis.
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Affiliation(s)
- Weifeng Xu
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Yexin Wang
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Haoming Zhao
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Baotin Fan
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Ke Guo
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Ming Cai
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Craniomaxillofacial Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Shanyong Zhang
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
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17
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The adaptor SASH1 acts through NOTCH1 and its inhibitor DLK1 in a 3D model of lumenogenesis involving CEACAM1. Exp Cell Res 2017; 359:384-393. [DOI: 10.1016/j.yexcr.2017.08.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 08/02/2017] [Accepted: 08/13/2017] [Indexed: 12/21/2022]
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18
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Winham SJ, Mehner C, Heinzen EP, Broderick BT, Stallings-Mann M, Nassar A, Vierkant RA, Hoskin TL, Frank RD, Wang C, Denison LA, Vachon CM, Frost MH, Hartmann LC, Aubrey Thompson E, Sherman ME, Visscher DW, Degnim AC, Radisky DC. NanoString-based breast cancer risk prediction for women with sclerosing adenosis. Breast Cancer Res Treat 2017; 166:641-650. [PMID: 28798985 PMCID: PMC5668350 DOI: 10.1007/s10549-017-4441-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 08/04/2017] [Indexed: 01/13/2023]
Abstract
Purpose Sclerosing adenosis (SA), found in ¼ of benign breast disease (BBD) biopsies, is a histological feature characterized by lobulocentric proliferation of acini and stromal fibrosis and confers a two-fold increase in breast cancer risk compared to women in the general population. We evaluated a NanoString-based gene expression assay to model breast cancer risk using RNA derived from formalin-fixed, paraffin-embedded (FFPE) biopsies with SA. Methods The study group consisted of 151 women diagnosed with SA between 1967 and 2001 within the Mayo BBD cohort, of which 37 subsequently developed cancer within 10 years (cases) and 114 did not (controls). RNA was isolated from benign breast biopsies, and NanoString-based methods were used to assess expression levels of 61 genes, including 35 identified by previous array-based profiling experiments and 26 from biological insight. Diagonal linear discriminant analysis of these data was used to predict cancer within 10 years. Predictive performance was assessed with receiver operating characteristic area under the curve (ROC-AUC) values estimated from 5-fold cross-validation. Results Gene expression prediction models achieved cross-validated ROC-AUC estimates ranging from 0.66 to 0.70. Performing univariate associations within each of the five folds consistently identified genes DLK2, EXOC6, KIT, RGS12, and SORBS2 as significant; a model with only these five genes showed cross-validated ROC-AUC of 0.75, which compared favorably to risk prediction using established clinical models (Gail/BCRAT: 0.57; BBD-BC: 0.67). Conclusions Our results demonstrate that biomarkers of breast cancer risk can be detected in benign breast tissue years prior to cancer development in women with SA. These markers can be assessed using assay methods optimized for RNA derived from FFPE biopsy tissues which are commonly available. Electronic supplementary material The online version of this article (doi:10.1007/s10549-017-4441-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Stacey J Winham
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, 55905, USA
| | - Christine Mehner
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Ethan P Heinzen
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, 55905, USA
| | - Brendan T Broderick
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, 55905, USA
| | | | - Aziza Nassar
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Robert A Vierkant
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, 55905, USA
| | - Tanya L Hoskin
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, 55905, USA
| | - Ryan D Frank
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, 55905, USA
| | - Chen Wang
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, 55905, USA
| | - Lori A Denison
- Department of Information Technology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Celine M Vachon
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, 55905, USA
| | - Marlene H Frost
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Lynn C Hartmann
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - E Aubrey Thompson
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Mark E Sherman
- Department of Health Sciences Research, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Daniel W Visscher
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Amy C Degnim
- Department of Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Derek C Radisky
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL, 32224, USA.
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Ma Z, Cai H, Zhang Y, Chang L, Cui Y. MiR-129-5p inhibits non-small cell lung cancer cell stemness and chemoresistance through targeting DLK1. Biochem Biophys Res Commun 2017; 490:309-316. [DOI: 10.1016/j.bbrc.2017.06.041] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 06/11/2017] [Indexed: 11/26/2022]
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20
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Nueda ML, Naranjo AI, Baladrón V, Laborda J. Different expression levels of DLK1 inversely modulate the oncogenic potential of human MDA-MB-231 breast cancer cells through inhibition of NOTCH1 signaling. FASEB J 2017; 31:3484-3496. [PMID: 28461338 DOI: 10.1096/fj.201601341rrr] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 04/11/2017] [Indexed: 01/01/2023]
Abstract
NOTCH receptors participate in cancer cell proliferation and survival. Accumulated evidence indicates that, depending on the cellular context, these receptors can function as oncogenes or as tumor-suppressor genes. The epidermal growth factor-like protein delta-like homolog (DLK)1 acts as a NOTCH inhibitor and is involved in the regulation of normal and tumoral growth. In this work, we focused on the role of DLK1 in the control of breast cancer cell growth, a tumor type in which NOTCH receptors have been shown to play both opposite roles. We found that human DLK1 inhibits NOTCH signaling in MDA-MB-231 breast cancer cells. The proliferation rate and invasion capabilities of these cells depended on the level of NOTCH activation and signaling, as regulated by DLK1. High levels of DLK1 expression led to a significant decrease in NOTCH signaling, which was associated with a decrease in breast cancer cell proliferation and invasion. On the contrary, lower levels of NOTCH inhibition, caused by lower levels of DLK1 overexpression, led to enhanced in vitro MDA-MB-231 cell invasion, and to both in vitro and in vivo increased cell proliferation. The data presented in this work suggest that a fine regulation of NOTCH signaling plays an important role in the control of breast cancer cell proliferation and invasion.-Nueda, M.-L., Naranjo, A.-I., Baladrón V., Laborda, J. Different expression levels of DLK1 inversely modulate the oncogenic potential of human MDA-MB-231 breast cancer cells through inhibition of NOTCH1 signaling.
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Affiliation(s)
- María-Luisa Nueda
- Biochemistry and Molecular Biology Branch-Department of Inorganic and Organic Chemistry and Biochemistry, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain .,School of Pharmacy, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain
| | - Ana-Isabel Naranjo
- Biochemistry and Molecular Biology Branch-Department of Inorganic and Organic Chemistry and Biochemistry, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain.,School of Medicine, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain and.,Regional Center for Biomedical Research (CRIB)-Biomedicine Unit, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain
| | - Victoriano Baladrón
- Biochemistry and Molecular Biology Branch-Department of Inorganic and Organic Chemistry and Biochemistry, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain.,School of Medicine, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain and.,Regional Center for Biomedical Research (CRIB)-Biomedicine Unit, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain
| | - Jorge Laborda
- Biochemistry and Molecular Biology Branch-Department of Inorganic and Organic Chemistry and Biochemistry, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain .,School of Pharmacy, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain
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21
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Gene expression profiling of breast cancer in Lebanese women. Sci Rep 2016; 6:36639. [PMID: 27857161 PMCID: PMC5114572 DOI: 10.1038/srep36639] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 10/13/2016] [Indexed: 12/20/2022] Open
Abstract
Breast cancer is commonest cancer in women worldwide. Elucidation of underlying biology and molecular pathways is necessary for improving therapeutic options and clinical outcomes. Molecular alterations in breast cancer are complex and involve cross-talk between multiple signaling pathways. The aim of this study is to extract a unique mRNA fingerprint of breast cancer in Lebanese women using microarray technologies. Gene-expression profiles of 94 fresh breast tissue samples (84 cancerous/10 non-tumor adjacent samples) were analyzed using GeneChip Human Genome U133 Plus 2.0 arrays. Quantitative real-time PCR was employed to validate candidate genes. Differentially expressed genes between breast cancer and non-tumor tissues were screened. Significant differences in gene expression were established for COL11A1/COL10A1/MMP1/COL6A6/DLK1/S100P/CXCL11/SOX11/LEP/ADIPOQ/OXTR/FOSL1/ACSBG1 and C21orf37. Pathways/diseases representing these genes were retrieved and linked using PANTHER®/Pathway Studio®. Many of the deregulated genes are associated with extracellular matrix, inflammation, angiogenesis, metastasis, differentiation, cell proliferation and tumorigenesis. Characteristics of breast cancers in Lebanese were compared to those of women from Western populations to explain why breast cancer is more aggressive and presents a decade earlier in Lebanese victims. Delineating molecular mechanisms of breast cancer in Lebanese women led to key genes which could serve as potential biomarkers and/or novel drug targets for breast cancer.
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22
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Royer-Bertrand B, Torsello M, Rimoldi D, El Zaoui I, Cisarova K, Pescini-Gobert R, Raynaud F, Zografos L, Schalenbourg A, Speiser D, Nicolas M, Vallat L, Klein R, Leyvraz S, Ciriello G, Riggi N, Moulin AP, Rivolta C. Comprehensive Genetic Landscape of Uveal Melanoma by Whole-Genome Sequencing. Am J Hum Genet 2016; 99:1190-1198. [PMID: 27745836 PMCID: PMC5097942 DOI: 10.1016/j.ajhg.2016.09.008] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 09/15/2016] [Indexed: 02/07/2023] Open
Abstract
Uveal melanoma (UM) is a rare intraocular tumor that, similar to cutaneous melanoma, originates from melanocytes. To gain insights into its genetics, we performed whole-genome sequencing at very deep coverage of tumor-control pairs in 33 samples (24 primary and 9 metastases). Genome-wide, the number of coding mutations was rather low (only 17 variants per tumor on average; range 7-28), thus radically different from cutaneous melanoma, where hundreds of exonic DNA insults are usually detected. Furthermore, no UV light-induced mutational signature was identified. Recurrent coding mutations were found in the known UM drivers GNAQ, GNA11, BAP1, EIF1AX, and SF3B1. Other genes, i.e., TP53BP1, CSMD1, TTC28, DLK2, and KTN1, were also found to harbor somatic mutations in more than one individual, possibly indicating a previously undescribed association with UM pathogenesis. De novo assembly of unmatched reads from non-coding DNA revealed peculiar copy-number variations defining specific UM subtypes, which in turn could be associated with metastatic transformation. Mutational-driven comparison with other tumor types showed that UM is very similar to pediatric tumors, characterized by very few somatic insults and, possibly, important epigenetic changes. Through the analysis of whole-genome sequencing data, our findings shed new light on the molecular genetics of uveal melanoma, delineating it as an atypical tumor of the adult for which somatic events other than mutations in exonic DNA shape its genetic landscape and define its metastatic potential.
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Affiliation(s)
- Beryl Royer-Bertrand
- Department of Computational Biology, Unit of Medical Genetics, University of Lausanne, 1011 Lausanne Switzerland; Center for Molecular Diseases, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - Matteo Torsello
- Experimental Pathology, Institute of Pathology, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - Donata Rimoldi
- Ludwig Cancer Research, Department of Oncology, University of Lausanne, 1066 Epalinges, Switzerland
| | - Ikram El Zaoui
- Department of Computational Biology, Unit of Medical Genetics, University of Lausanne, 1011 Lausanne Switzerland
| | - Katarina Cisarova
- Department of Computational Biology, Unit of Medical Genetics, University of Lausanne, 1011 Lausanne Switzerland
| | - Rosanna Pescini-Gobert
- Department of Computational Biology, Unit of Medical Genetics, University of Lausanne, 1011 Lausanne Switzerland
| | - Franck Raynaud
- Department of Computational Biology, Computational Systems Oncology, University of Lausanne, 1011 Lausanne, Switzerland; Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland
| | - Leonidas Zografos
- Jules-Gonin Eye Hospital, Department of Ophthalmology, Fondation Asile des Aveugles, University of Lausanne, 1004 Lausanne, Switzerland
| | - Ann Schalenbourg
- Jules-Gonin Eye Hospital, Department of Ophthalmology, Fondation Asile des Aveugles, University of Lausanne, 1004 Lausanne, Switzerland
| | - Daniel Speiser
- Ludwig Cancer Research, Department of Oncology, University of Lausanne, 1066 Epalinges, Switzerland
| | - Michael Nicolas
- Jules-Gonin Eye Hospital, Department of Ophthalmology, Fondation Asile des Aveugles, University of Lausanne, 1004 Lausanne, Switzerland
| | - Laureen Vallat
- Jules-Gonin Eye Hospital, Department of Ophthalmology, Fondation Asile des Aveugles, University of Lausanne, 1004 Lausanne, Switzerland
| | - Robert Klein
- Formerly Complete Genomics, Mountain View, CA 94043, USA
| | - Serge Leyvraz
- Department of Oncology, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - Giovanni Ciriello
- Department of Computational Biology, Computational Systems Oncology, University of Lausanne, 1011 Lausanne, Switzerland; Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland
| | - Nicolò Riggi
- Experimental Pathology, Institute of Pathology, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - Alexandre P Moulin
- Jules-Gonin Eye Hospital, Department of Ophthalmology, Fondation Asile des Aveugles, University of Lausanne, 1004 Lausanne, Switzerland
| | - Carlo Rivolta
- Department of Computational Biology, Unit of Medical Genetics, University of Lausanne, 1011 Lausanne Switzerland.
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García-Gallastegui P, Luzuriaga J, Aurrekoetxea M, Baladrón V, Ruiz-Hidalgo MJ, García-Ramírez JJ, Laborda J, Unda F, Ibarretxe G. Reduced salivary gland size and increased presence of epithelial progenitor cells in DLK1-deficient mice. Cell Tissue Res 2015; 364:513-525. [DOI: 10.1007/s00441-015-2344-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 12/10/2015] [Indexed: 01/23/2023]
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24
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Li H, Cui ML, Chen TY, Xie HY, Cui Y, Tu H, Chen FH, Ge C, Li JJ. Serum DLK1 is a potential prognostic biomarker in patients with hepatocellular carcinoma. Tumour Biol 2015; 36:8399-404. [PMID: 26018510 DOI: 10.1007/s13277-015-3607-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 05/22/2015] [Indexed: 12/31/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the sixth most prevalent cancer and the third most frequent cause of cancer-related death in developing countries, especially in East Asia and South Africa, and the identification of new biomarkers for early diagnosis and prognosis is needed. Delta-like 1 homologue (Drosophila) (DLK1) is expressed in malignancies and promotes cancer cell stemness and tumourigenicity, which makes this molecule a potential target for therapies directed against cancer stem/progenitor cells. Here, we aimed to assess the predictive value of DLK1 as a diagnostic and prognostic biomarker in HCC. With this purpose, serum DLK1 levels were detected using an enzyme-linked immunosorbent assay (ELISA) in serum specimens from 397 HCC patients, 114 healthy individuals, 43 patients with chronic hepatitis B virus (HBV) infection and 24 cirrhotic liver patients with HBV infection, and the correlation between DLK1 levels and clinical features was evaluated. Our data showed that the serum DLK1 level was significantly higher in HCC patients than in healthy individuals or patients with chronic HBV infection (HBV carriers) (P < 0.05). Moreover, the serum DLK1 levels were positively correlated with tumour size and α-fetoprotein (AFP) levels, but not with gender, age, histological grade, HBV infection, intrahepatic metastasis or cirrhosis in HCC patients. Kaplan-Meier analysis indicated that higher DLK1 levels were associated with shorter survival in HCC patients. These results suggest that the serum levels of DLK1 may serve as a prognostic biomarker for HCC patients.
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Affiliation(s)
- Hong Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai, 200032, China
| | - Mei-ling Cui
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai, 200032, China
| | - Tao-yang Chen
- Qidong Liver Cancer Institute, Qidong, 226200, China
| | - Hai-yang Xie
- Department of General Surgery, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Ying Cui
- Cancer Institute of Guangxi, Nanning, 530027, China
| | - Hong Tu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai, 200032, China
| | - Fu-hua Chen
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai, 200032, China
| | - Chao Ge
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai, 200032, China
| | - Jin-jun Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai, 200032, China.
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25
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A Monoclonal Antibody to Human DLK1 Reveals Differential Expression in Cancer and Absence in Healthy Tissues. Antibodies (Basel) 2015. [DOI: 10.3390/antib4020071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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