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Wyseure T, Yang T, Zhou JY, Cooke EJ, Wanko B, Olmer M, Agashe R, Morodomi Y, Behrendt N, Lotz M, Morser J, von Drygalski A, Mosnier LO. TAFI deficiency causes maladaptive vascular remodeling after hemophilic joint bleeding. JCI Insight 2019; 4:128379. [PMID: 31465300 PMCID: PMC6795396 DOI: 10.1172/jci.insight.128379] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 08/23/2019] [Indexed: 12/23/2022] Open
Abstract
Excessive vascular remodeling is characteristic of hemophilic arthropathy (HA) and may contribute to joint bleeding and the progression of HA. Mechanisms for pathological vascular remodeling after hemophilic joint bleeding are unknown. In hemophilia, activation of thrombin-activatable fibrinolysis inhibitor (TAFI) is impaired, which contributes to joint bleeding and may also underlie the aberrant vascular remodeling. Here, hemophilia A (factor VIII-deficient; FVIII-deficient) mice or TAFI-deficient mice with transient (antibody-induced) hemophilia A were used to determine the role of FVIII and TAFI in vascular remodeling after joint bleeding. Excessive vascular remodeling and vessel enlargement persisted in FVIII-deficient and TAFI-deficient mice, but not in transient hemophilia WT mice, after similar joint bleeding. TAFI-overexpression in FVIII-deficient mice prevented abnormal vessel enlargement and vascular leakage. Age-related vascular changes were observed with FVIII or TAFI deficiency and correlated positively with bleeding severity after injury, supporting increased vascularity as a major contributor to joint bleeding. Antibody-mediated inhibition of uPA also prevented abnormal vascular remodeling, suggesting that TAFI's protective effects include inhibition of uPA-mediated plasminogen activation. In conclusion, the functional TAFI deficiency in hemophilia drives maladaptive vascular remodeling in the joints after bleeding. These mechanistic insights allow targeted development of potentially new strategies to normalize vascularity and control rebleeding in HA.
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Affiliation(s)
- Tine Wyseure
- Deptartment of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Tingyi Yang
- Deptartment of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Jenny Y. Zhou
- Department of Medicine, UCSD, San Diego, California, USA
| | - Esther J. Cooke
- Deptartment of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
- Department of Medicine, UCSD, San Diego, California, USA
| | - Bettina Wanko
- Division of Hematology, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
- Clinical Division of Endocrinology and Metabolism, Department of Medicine III, Medical University Vienna, Vienna, Austria
| | - Merissa Olmer
- Deptartment of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Ruchi Agashe
- Deptartment of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Yosuke Morodomi
- Deptartment of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Niels Behrendt
- The Finsen Laboratory, Rigshospitalet/Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark
| | - Martin Lotz
- Deptartment of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - John Morser
- Division of Hematology, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Annette von Drygalski
- Deptartment of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
- Department of Medicine, UCSD, San Diego, California, USA
| | - Laurent O. Mosnier
- Deptartment of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
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Lou Y, Yu Y, Xu X, Zhou S, Shen H, Fan T, Wu D, Yin J, Li G. Long non-coding RNA LUCAT1 promotes tumourigenesis by inhibiting ANXA2 phosphorylation in hepatocellular carcinoma. J Cell Mol Med 2018; 23:1873-1884. [PMID: 30588744 PMCID: PMC6378214 DOI: 10.1111/jcmm.14088] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 11/10/2018] [Accepted: 11/22/2018] [Indexed: 01/09/2023] Open
Abstract
Long non‐coding RNAs (lncRNAs) play essential roles in diverse biological processes; however, current understanding of the mechanism underlying the regulation of tumour proliferation and metastasis is limited. Lung cancer‐associated transcript 1 (LUCAT1) has been reported in a variety of human cancers, while its role in hepatocellular carcinoma (HCC) remains unclear. This study aimed to determine the biological role and underlying mechanism of LUCAT1 on progression and metastasis in HCC cells and clinical specimens. Our results demonstrated that LUCAT1 was up‐regulated in HCC tissues and cells. Loss‐ and gain‐of‐function studies revealed that LUCAT1 promotes the proliferation and metastasis of HCC cells in vitro and in vivo. Furthermore, RNA pulldown and Western blot assays indicated that LUCAT1 inhibited the phosphorylation of Annexin A2 (ANXA2) to reduce the degradation of ANXA2‐S100A10 heterotetramer (AIIt), which in turn accelerated the secretion of plasminogen into plasmin, thereby resulting in the activation of metalloprotease proteins. In conclusion, we propose that LUCAT1 serves as a novel diagnostic and therapeutic target for HCC.
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Affiliation(s)
- Yun Lou
- Department of Liver Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu province, China
| | - Yue Yu
- Key Laboratory of Living Donor Transplantation of Ministry of Public Health, Nanjing, Jiangsu province, China
| | - Xiaolia Xu
- Medical School of Southeast University, Nanjing, Jiangsu province, P.R. China
| | - Shu Zhou
- Department of Liver Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu province, China
| | - Haiyuan Shen
- Department of Liver Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu province, China
| | - Tianlong Fan
- Department of Liver Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu province, China
| | - Di Wu
- Department of Liver Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu province, China
| | - Jie Yin
- Department of Respiratory Medicine, Jinling Hospital, Nanjing, Jiangsu province, China
| | - Guoqiang Li
- Department of Hepatobiliary Surgery of Drum Tower Clinical Medical College, Nanjing Medical University, Nanjing, China.,Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
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