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Kim G, Bhattarai PY, Lim SC, Lee KY, Choi HS. Sirtuin 5-mediated deacetylation of TAZ at K54 promotes melanoma development. Cell Oncol (Dordr) 2024; 47:967-985. [PMID: 38112979 DOI: 10.1007/s13402-023-00910-w] [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] [Accepted: 12/04/2023] [Indexed: 12/21/2023] Open
Abstract
PURPOSE Nuclear accumulation of YAP/TAZ promotes tumorigenesis in several cancers, including melanoma. Although the mechanisms underlying the nuclear retention of YAP are known, those underlying the retention of TAZ remain unclear. Our study investigates a novel acetylation/deacetylation switch in TAZ, governing its subcellular localization in melanoma tumorigenesis. METHODS Immunoprecipitation/Western blot assessed TAZ protein interactions and acetylation. SIRT5 activity was quantified with enzyme-linked immunosorbent assay. Immunofluorescence indicated TAZ nuclear localization. TEAD transcriptional activity was measured through luciferase reporter assays. ChIP detected TAZ binding to the CTGF promoter. Transwell and wound healing assays quantified melanoma cell invasiveness and migration. Metastasis was evaluated using a mouse model via tail vein injections. Clinical relevance was explored via immunohistochemical staining of patient tumors. RESULTS CBP facilitated TAZ acetylation at K54 in response to epidermal growth factor stimulation, while SIRT5 mediated deacetylation. Acetylation correlated with phosphorylation, regulating TAZ's binding with LATS2 or TEAD. TAZ K54 acetylation enhanced its S89 phosphorylation, promoting cytosolic retention via LATS2 interaction. SIRT5-mediated deacetylation enhanced TAZ-TEAD interaction and nuclear retention. Chromatin IP showed SIRT5-deacetylated TAZ recruited to CTGF promoter, boosting transcriptional activity. In a mouse model, SIRT5 overexpression induced melanoma metastasis to lung tissue following the injection of B16F10 melanocytes via the tail vein, and this effect was prevented by verteporfin treatment. CONCLUSIONS Our study revealed a novel mechanism of TAZ nuclear retention regulated by SIRT5-mediated K54 deacetylation and demonstrated the significance of TAZ deacetylation in CTGF expression. This study highlights the potential implications of the SIRT5/TAZ axis for treating metastatic melanoma.
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Affiliation(s)
- Garam Kim
- College of Pharmacy, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju, 501-759, Republic of Korea
| | - Poshan Yugal Bhattarai
- College of Pharmacy, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju, 501-759, Republic of Korea
| | - Sung-Chul Lim
- Department of Pathology, School of Medicine, Chosun University, Gwangju, 61452, Republic of Korea
| | - Kwang Youl Lee
- College of Pharmacy, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Hong Seok Choi
- College of Pharmacy, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju, 501-759, Republic of Korea.
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2
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Zheng H, Wang H, Xu Y, Xu X, Zhu Z, Fang J, Song Z, Liu J. MST2 Acts via AKT Activity to Promote Neurite Outgrowth and Functional Recovery after Spinal Cord Injury in Mice. Mol Neurobiol 2024:10.1007/s12035-024-04158-9. [PMID: 38581538 DOI: 10.1007/s12035-024-04158-9] [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: 08/17/2023] [Accepted: 03/28/2024] [Indexed: 04/08/2024]
Abstract
Spinal cord injury (SCI) constitutes a significant clinical challenge, and there is extensive research focused on identifying molecular activities that can facilitate the repair of spinal cord injuries. Mammalian sterile 20-like kinase 2 (MST2), a core component of the Hippo signaling pathway, plays a key role in apoptosis and cell growth. However, its role in neurite outgrowth after spinal cord injury remains unknown. Through comprehensive in vitro and in vivo experiments, we demonstrated that MST2, predominantly expressed in neurons, actively participated in the natural development of the CNS. Post-SCI, MST2 expression significantly increased, indicating its activation and potential role in the early stages of neural recovery. Detailed analyses showed that MST2 knockdown impaired neurite outgrowth and motor function recovery, whereas MST2 overexpression led to the opposite effects, underscoring MST2's neuroprotective role in enhancing neural repair. Further, we elucidated the mechanism underlying MST2's action, revealing its interaction with AKT and positive regulation of AKT activity, a well-established promoter of neurite outgrowth. Notably, MST2's promotion of neurite outgrowth and motor functional recovery was diminished by AKT inhibitors, highlighting the dependency of MST2's neuroprotective effects on AKT signaling. In conclusion, our findings affirmed MST2's pivotal role in fostering neuronal neurite outgrowth and facilitating functional recovery after SCI, mediated through its positive modulation of AKT activity. In conclusion, our findings confirmed MST2's crucial role in neural protection, promoting neurite outgrowth and functional recovery after SCI through positive AKT activity modulation. These results position MST2 as a potential therapeutic target for SCI, offering new insights into strategies for enhancing neuroregeneration and functional restoration.
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Affiliation(s)
- Hongming Zheng
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
- Department of Orthopedics, The People's Hospital of Danyang, Danyang, 212300, China
| | - Honghai Wang
- Department of Orthopedics, The NO. 2 People's Hospital of Fuyang, Fuyang, China
| | - Yi Xu
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xu Xu
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zhenghuan Zhu
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Jiawei Fang
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zhiwen Song
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China.
| | - Jinbo Liu
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China.
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3
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Melrose J. Hippo cell signaling and HS-proteoglycans regulate tissue form and function, age-dependent maturation, extracellular matrix remodeling, and repair. Am J Physiol Cell Physiol 2024; 326:C810-C828. [PMID: 38223931 DOI: 10.1152/ajpcell.00683.2023] [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: 12/11/2023] [Revised: 01/09/2024] [Accepted: 01/09/2024] [Indexed: 01/16/2024]
Abstract
This review examined how Hippo cell signaling and heparan sulfate (HS)-proteoglycans (HSPGs) regulate tissue form and function. Despite being a nonweight-bearing tissue, the brain is regulated by Hippo mechanoresponsive cell signaling pathways during embryonic development. HS-proteoglycans interact with growth factors, morphogens, and extracellular matrix components to regulate development and pathology. Pikachurin and Eyes shut (Eys) interact with dystroglycan to stabilize the photoreceptor axoneme primary cilium and ribbon synapse facilitating phototransduction and neurotransduction with bipolar retinal neuronal networks in ocular vision, the primary human sense. Another HSPG, Neurexin interacts with structural and adaptor proteins to stabilize synapses and ensure specificity of neural interactions, and aids in synaptic potentiation and plasticity in neurotransduction. HSPGs also stabilize the blood-brain barrier and motor neuron basal structures in the neuromuscular junction. Agrin and perlecan localize acetylcholinesterase and its receptors in the neuromuscular junction essential for neuromuscular control. The primary cilium is a mechanosensory hub on neurons, utilized by YES associated protein (YAP)-transcriptional coactivator with PDZ-binding motif (TAZ) Hippo, Hh, Wnt, transforming growth factor (TGF)-β/bone matrix protein (BMP) receptor tyrosine kinase cell signaling. Members of the glypican HSPG proteoglycan family interact with Smoothened and Patched G-protein coupled receptors on the cilium to regulate Hh and Wnt signaling during neuronal development. Control of glycosyl sulfotransferases and endogenous protease expression by Hippo TAZ YAP represents a mechanism whereby the fine structure of HS-proteoglycans can be potentially modulated spatiotemporally to regulate tissue morphogenesis in a similar manner to how Hippo signaling controls sialyltransferase expression and mediation of cell-cell recognition, dysfunctional sialic acid expression is a feature of many tumors.
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Affiliation(s)
- James Melrose
- Raymond Purves Laboratory, Institute of Bone and Joint Research, Kolling Institute of Medical Research, University of Sydney, Northern Sydney Local Health District, Royal North Shore Hospital, St. Leonards, New South Wales, Australia
- Sydney Medical School-Northern, University of Sydney at Royal North Shore Hospital, St. Leonards, New South Wales, Australia
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, New South Wales, Australia
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4
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Li X, Lou Y, Hu W, Wang K, Zhang Y, Xu R, Zhang T, Yang W, Qian Y. Activation of TAZ by XMU-MP-1 inhibits osteoclastogenesis and attenuates ovariectomy-induced cancellous bone loss. Biochem Biophys Res Commun 2024; 692:149323. [PMID: 38043154 DOI: 10.1016/j.bbrc.2023.149323] [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: 08/26/2023] [Revised: 11/09/2023] [Accepted: 11/22/2023] [Indexed: 12/05/2023]
Abstract
Osteoporosis is a metabolic bone loss disorder usually accompanied by overactivated osteoclast formation and increased bone resorption. Transcriptional co-activator with PDZ-binding motif (TAZ) is an emerging potential target for the treatment of osteoporosis. Our previous research showed that TAZ overexpression inhibited osteoclast formation while TAZ silencing had the opposite effect. In addition, TAZ knockout in mouse osteoclasts induced osteoporosis in animal experiments. XMU-MP-1 (XMU) is a selective MST1/2 inhibitor that can theoretically activate TAZ; however, its effect on osteoporosis remains unknown. In this study, we found that XMU treatment significantly increased TAZ expression in osteoclasts and inhibited osteoclast formation in vitro; however, this inhibitory effect was eliminated after the deletion of TAZ. Furthermore, XMU treatment upregulated TAZ expression in osteoclasts and alleviated ovariectomy (OVX)-induced osteoporosis in bilateral OVX mouse models. These findings suggest that XMU can effectively activate TAZ and that pharmacological activation of TAZ may be a promising option for the treatment of osteoporosis.
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Affiliation(s)
- Xinyu Li
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China; Department of Orthopaedics, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310000, China
| | - Yun Lou
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Wenjun Hu
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Kelei Wang
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Yufeng Zhang
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Rongjian Xu
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Tan Zhang
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Wanlei Yang
- Department of Orthopaedics, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China.
| | - Yu Qian
- Department of Orthopaedics, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China.
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5
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Meliambro K, Yang Y, de Cos M, Rodriguez Ballestas E, Malkin C, Haydak J, Lee JR, Salem F, Mariani LH, Gordon RE, Basgen JM, Wen HH, Fu J, Azeloglu EU, He JC, Wong JS, Campbell KN. KIBRA upregulation increases susceptibility to podocyte injury and glomerular disease progression. JCI Insight 2023; 8:e165002. [PMID: 36853804 PMCID: PMC10132156 DOI: 10.1172/jci.insight.165002] [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: 09/01/2022] [Accepted: 02/21/2023] [Indexed: 03/01/2023] Open
Abstract
Despite recent progress in the identification of mediators of podocyte injury, mechanisms underlying podocyte loss remain poorly understood, and cell-specific therapy is lacking. We previously reported that kidney and brain expressed protein (KIBRA), encoded by WWC1, promotes podocyte injury in vitro through activation of the Hippo signaling pathway. KIBRA expression is increased in the glomeruli of patients with focal segmental glomerulosclerosis, and KIBRA depletion in vivo is protective against acute podocyte injury. Here, we tested the consequences of transgenic podocyte-specific WWC1 expression in immortalized human podocytes and in mice, and we explored the association between glomerular WWC1 expression and glomerular disease progression. We found that KIBRA overexpression in immortalized human podocytes promoted cytoplasmic localization of Yes-associated protein (YAP), induced actin cytoskeletal reorganization, and altered focal adhesion expression and morphology. WWC1-transgenic (KIBRA-overexpressing) mice were more susceptible to acute and chronic glomerular injury, with evidence of YAP inhibition in vivo. Of clinical relevance, glomerular WWC1 expression negatively correlated with renal survival among patients with primary glomerular diseases. These findings highlight the importance of KIBRA/YAP signaling to the regulation of podocyte structural integrity and identify KIBRA-mediated injury as a potential target for podocyte-specific therapy in glomerular disease.
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Affiliation(s)
- Kristin Meliambro
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Yanfeng Yang
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Marina de Cos
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | - Caroline Malkin
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jonathan Haydak
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - John R. Lee
- Division of Nephrology and Hypertension, Department of Medicine, Weill Cornell Medicine, New York, New York, USA
| | - Fadi Salem
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Jacksonville, Florida, USA
| | - Laura H. Mariani
- Division of Nephrology, Department of Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Ronald E. Gordon
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - John M. Basgen
- Stereology and Morphometry Laboratory, Charles R. Drew University of Medicine and Science, Los Angeles, California, USA
| | - Huei Hsun Wen
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jia Fu
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Evren U. Azeloglu
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - John Cijiang He
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jenny S. Wong
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Kirk N. Campbell
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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6
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Kuo YZ, Kang YR, Chang WL, Sim LCL, Hsieh TC, Chang CH, Wang YC, Tsai CJ, Huang LC, Tsai ST, Wu LW. YAP1 acts as a negative regulator of pro-tumor TAZ expression in esophageal squamous cell carcinoma. Cell Oncol 2022; 45:893-909. [PMID: 35930163 PMCID: PMC9579103 DOI: 10.1007/s13402-022-00695-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2022] [Indexed: 11/26/2022] Open
Abstract
Purpose Although YAP1 and TAZ are believed to be equivalent downstream effectors of the Hippo pathway, differential expression of YAP1 or TAZ suggests distinct functions during cancer progression. The exact role of YAP1 and TAZ in esophageal cancer, the 6th leading cancer-related mortality in the world, remains elusive. Methods Following single or double manipulation of YAP1 or TAZ expression, we subjected these manipulated cells to proliferation, migration, invasion, and xenograft tumorigenesis assays. We used RT-qPCR and Western blotting to examine their expression in the manipulated cells with or without inhibition of transcription or translation. We also examined the impact of YAP1 or TAZ deregulation on clinical outcome of esophageal cancer patients from the TCGA database. Results We found that YAP1 functions as a tumor suppressor whereas TAZ exerts pro-tumor functions in esophageal cancer cells. We also found a significant increase in TAZ mRNA expression upon YAP1 depletion, but not vice versa, despite the downregulation of CTGF and CYR61, shared targets of YAP1 and TAZ, in xenografted tissue cells. In addition to transcriptional regulation, YAP1-mediated TAZ expression was found to occur via protein synthesis. Restored TAZ expression mitigated YAP1-mediated suppression of cellular behavior. By contrast, TAZ silencing reduced the promoting effect exerted by YAP1 depletion on cellular behaviors. The observed anti-tumor function of YAP1 was further supported by a better overall survival among esophageal cancer patients with a high YAP1 expression. Conclusion From our data we conclude that YAP1 functions as a suppressor and negatively regulates pro-tumor TAZ expression via transcriptional and translational control in esophageal cancer. Supplementary Information The online version contains supplementary material available at 10.1007/s13402-022-00695-4.
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Affiliation(s)
- Yi-Zih Kuo
- Department of Otolaryngology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan, Republic of China
| | - Ya-Rong Kang
- Institutes of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan, Republic of China
| | - Wei-Lun Chang
- Department of Internal Medicine, National Cheng Kung University Hospital, Tainan, 70428, Taiwan, Republic of China
| | - Lydia Chin-Ling Sim
- Institutes of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan, Republic of China
| | - Tzu-Chin Hsieh
- Institutes of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan, Republic of China
| | - Chu-Han Chang
- Institutes of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan, Republic of China
| | - Yi-Ching Wang
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan, Republic of China
| | - Ching-Jung Tsai
- Institutes of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan, Republic of China
| | - Li-Chun Huang
- Institutes of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan, Republic of China
| | - Sen-Tien Tsai
- Department of Otolaryngology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan, Republic of China.
| | - Li-Wha Wu
- Institutes of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan, Republic of China.
- Department of Laboratory Science and Technology, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China.
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7
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Guo CL. Self-Sustained Regulation or Self-Perpetuating Dysregulation: ROS-dependent HIF-YAP-Notch Signaling as a Double-Edged Sword on Stem Cell Physiology and Tumorigenesis. Front Cell Dev Biol 2022; 10:862791. [PMID: 35774228 PMCID: PMC9237464 DOI: 10.3389/fcell.2022.862791] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 04/29/2022] [Indexed: 12/19/2022] Open
Abstract
Organ development, homeostasis, and repair often rely on bidirectional, self-organized cell-niche interactions, through which cells select cell fate, such as stem cell self-renewal and differentiation. The niche contains multiplexed chemical and mechanical factors. How cells interpret niche structural information such as the 3D topology of organs and integrate with multiplexed mechano-chemical signals is an open and active research field. Among all the niche factors, reactive oxygen species (ROS) have recently gained growing interest. Once considered harmful, ROS are now recognized as an important niche factor in the regulation of tissue mechanics and topology through, for example, the HIF-YAP-Notch signaling pathways. These pathways are not only involved in the regulation of stem cell physiology but also associated with inflammation, neurological disorder, aging, tumorigenesis, and the regulation of the immune checkpoint molecule PD-L1. Positive feedback circuits have been identified in the interplay of ROS and HIF-YAP-Notch signaling, leading to the possibility that under aberrant conditions, self-organized, ROS-dependent physiological regulations can be switched to self-perpetuating dysregulation, making ROS a double-edged sword at the interface of stem cell physiology and tumorigenesis. In this review, we discuss the recent findings on how ROS and tissue mechanics affect YAP-HIF-Notch-PD-L1 signaling, hoping that the knowledge can be used to design strategies for stem cell-based and ROS-targeting therapy and tissue engineering.
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Feng P, Zhang J, Zhang J, Liu X, Pan L, Chen D, Ji M, Lu F, Li P, Li G, Sun T, Li J, Ye J, Ji C. Deacetylation of YAP1 Promotes the Resistance to Chemo- and Targeted Therapy in FLT3-ITD+ AML Cells. Front Cell Dev Biol 2022; 10:842214. [PMID: 35656547 PMCID: PMC9152322 DOI: 10.3389/fcell.2022.842214] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/18/2022] [Indexed: 12/19/2022] Open
Abstract
The FLT3-ITD mutation occurs in about 30% of acute myeloid leukemia (AML) and is associated with poor prognosis. However, FLT3 inhibitors are only partially effective and prone to acquired resistance. Here, we identified Yes-associated protein 1 (YAP1) as a tumor suppressor in FLT3-ITD+ AML. YAP1 inactivation conferred FLT3-ITD+ AML cell resistance to chemo- and targeted therapy. Mass spectrometric assay revealed that DNA damage repair gene poly (ADP-ribose) polymerase 1 (PARP1) might be the downstream of YAP1, and the pro-proliferative effect by YAP1 knockdown was partly reversed via PARP1 inhibitor. Importantly, histone deacetylase 10 (HDAC10) contributed to decreased YAP1 acetylation levels through histone H3 lysine 27 (H3K27) acetylation, leading to the reduced nuclear accumulation of YAP1. Selective HDAC10 inhibitor chidamide or HDAC10 knockdown activated YAP1, enhanced DNA damage, and significantly attenuated FLT3-ITD+ AML cell resistance. In addition, combination chidamide with FLT3 inhibitors or chemotherapy agents synergistically inhibited growth and increased apoptosis of FLT3-ITD+ AML cell lines and acquired resistant cells from the relapse FLT3-ITD+ AML patients. These findings demonstrate that the HDAC10-YAP1-PARP1 axis maintains FLT3-ITD+ AML cells and targeting this axis might improve clinical outcomes in FLT3-ITD+ AML patients.
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Affiliation(s)
- Panpan Feng
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jingru Zhang
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Juan Zhang
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiaomin Liu
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Lina Pan
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Dawei Chen
- Laboratory of Medical Chemistry, GIGA-Stem Cells, Faculty of Medicine, University of Liege, CHU, Liege, Belgium
| | - Min Ji
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Fei Lu
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Peng Li
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Guosheng Li
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Tao Sun
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jingxin Li
- Department of Physiology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jingjing Ye
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- *Correspondence: Chunyan Ji, ; Jingjing Ye,
| | - Chunyan Ji
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- *Correspondence: Chunyan Ji, ; Jingjing Ye,
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9
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MicroRNA-181a Regulates the Proliferation and Differentiation of Hu Sheep Skeletal Muscle Satellite Cells and Targets the YAP1 Gene. Genes (Basel) 2022; 13:genes13030520. [PMID: 35328074 PMCID: PMC8949050 DOI: 10.3390/genes13030520] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/10/2022] [Accepted: 03/14/2022] [Indexed: 02/05/2023] Open
Abstract
MicroRNA (miRNA) is of great importance to muscle growth and development, including the regulation of the proliferation and differentiation of skeletal muscle satellite cells (SMSCs). In our research group’s previous study, we found that miR-181a is differentially expressed in the longissimus dorsi muscle of Hu sheep at different stages. We speculated that miR-181a may participate in the growth and development process of Hu sheep. To understand the mechanism of miR-181a regulating the growth and development of Hu sheep skeletal muscle, we extracted skeletal muscle satellite cells from the longissimus dorsi muscle of 3-month-old Hu sheep fetuses and performed a series of experiments. Our results showed that miR-181a suppressed SMSCs’ proliferation using QRT-PCR, Western blot, CCK-8, EDU, and Flow cytometry cycle tests. In addition, QRT-PCR, Western blot, and immunofluorescence indicated that miR-181a facilitated the differentiation of SMSCs. Then, we used dual-luciferase reporter gene detection, QRT-PCR, and Western blot to find that the Yes1-related transcription regulator (YAP1) is the target gene of miR-181a. Our study supplies a research basis for understanding the regulation mechanism of miR-181a on the growth of Hu sheep skeletal muscle.
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10
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Jun JH, Lee EJ, Park M, Ko JY, Park JH. Reduced expression of TAZ inhibits primary cilium formation in renal glomeruli. Exp Mol Med 2022; 54:169-179. [PMID: 35177808 PMCID: PMC8894487 DOI: 10.1038/s12276-022-00730-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/30/2021] [Accepted: 11/15/2021] [Indexed: 11/20/2022] Open
Abstract
Renal primary cilia are antenna-like organelles that maintain cellular homeostasis via multiple receptors clustered along their membranes. Recent studies have revealed that YAP/TAZ, key paralogous effectors of the Hippo pathway, are involved in ciliogenesis; however, their independent roles need to be further investigated. Here, we analyzed the renal phenotypes of kidney-specific TAZ knockout mice and observed ciliary defects only in glomeruli where mild cysts were formed. This finding prompted us to verify the role of TAZ specifically in renal tubule ciliary regulation. Therefore, we investigated the effects of TAZ silencing and compared them to those of YAP knockdown using three different types of renal tubular cells. We found that the absence of TAZ prevented proper cilia formation in glomerular cells, whereas it had a negligible effect in collecting duct and proximal tubule cells. IFT and NPHP protein levels were altered because of TAZ deficiency, accompanied by ciliary defects in glomerular cells, and ciliary recovery was identified by regulating some NPHP proteins. Although our study focused on TAZ, ciliogenesis, and other ciliary genes, the results suggest the very distinct roles of YAP and TAZ in kidneys, specifically in terms of ciliary regulation. The roles of two regulatory proteins in the kidneys have been further clarified and provide insights into cilia defects and cyst formation. Cilia are organelles that act as ‘antennae’ for cell signaling in many tissues. Recent studies have highlighted two proteins involved in kidney cilia formation, YAP and TAZ, but little is known about their roles. Jong Hoon Park and co-workers at Sookmyung Women’s University in Seoul, South Korea, examined the role of TAZ in the regulation of kidney tubule cilia in mice. They explored the effects of silencing TAZ or YAP expression in different types of kidney tubule cells. TAZ deficiency but not YAP deficiency prevented correct cilia formation in the glomeruli, blood vessels that filter waste in the kidneys, and the resulting defects led to mild cyst generation.
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Affiliation(s)
- Jae Hee Jun
- Department of Biological Science, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Eun Ji Lee
- Department of Biological Science, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Minah Park
- Department of Biological Science, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Je Yeong Ko
- Department of Biological Science, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Jong Hoon Park
- Department of Biological Science, Sookmyung Women's University, Seoul, 04310, Republic of Korea.
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11
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Schwarz H, Popp B, Airik R, Torabi N, Knaup KX, Stoeckert J, Wiech T, Amann K, Reis A, Schiffer M, Wiesener MS, Schueler M. Biallelic ANKS6 mutations cause late onset ciliopathy with chronic kidney disease through YAP dysregulation. Hum Mol Genet 2021; 31:1357-1369. [PMID: 34740236 DOI: 10.1093/hmg/ddab322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 10/26/2021] [Accepted: 10/29/2021] [Indexed: 11/13/2022] Open
Abstract
Nephronophthisis-related ciliopathies (NPHP-RC) comprises a group of inherited kidney diseases, caused by mutations in genes encoding proteins localizing to primary cilia. NPHP-RC represent the one of the most frequent monogenic causes of renal failure within the first three decades of life, but its molecular disease mechanisms remains unclear. Here, we identified biallelic ANKS6 mutations in two affected siblings with late onset chronic kidney disease by whole exome sequencing. We employed patient derived fibroblasts generating an in vitro model to study the precise biological impact of distinct human ANKS6 mutations, completed by immunohistochemistry studies on renal biopsy samples. Functional studies using patient derived cells showed an impaired integrity of the ciliary Inversin compartment with reduced cilia length. Further analyses demonstrated that ANKS6 deficiency leads to a dysregulation of Hippo-signaling through nuclear YAP imbalance, and disrupted ciliary localization of YAP. Additionally an altered transcriptional activity of canonical Wnt target genes and altered expression of non-phosphorylated (active) β-catenin and phosphorylated GSK3β were observed. Upon ciliation ANKS6 deficiency revealed a deranged subcellular localization and expression of components of the endocytic recycling compartment. Our results demonstrate that ANKS6 plays a key role in regulating the Hippo pathway and ANKS6 deficiency is linked to dysregulation of signaling pathways. Our study provides molecular clues in understanding pathophysiological mechanisms of NPHP-RC and may offer new therapeutic targets.
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Affiliation(s)
- Hannah Schwarz
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, 91054, Germany
| | - Bernt Popp
- Institute of Human Genetics, University Medical Center Leipzig, Leipzig, 04103, Germany.,Institute of Human Genetics, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, 91054, Germany
| | - Rannar Airik
- Department of Pediatrics, Division of Nephrology, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, 15224, USA
| | - Nasrin Torabi
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, 91054, Germany
| | - Karl X Knaup
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, 91054, Germany
| | - Johanna Stoeckert
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, 91054, Germany
| | - Thorsten Wiech
- Institute of Pathology, Nephropathology Section, University Hospital Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Kerstin Amann
- Department of Nephropathology, Institute of Pathology, University of Erlangen-Nürnberg, Erlangen, 91054, Germany
| | - André Reis
- Institute of Human Genetics, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, 91054, Germany
| | - Mario Schiffer
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, 91054, Germany
| | - Michael S Wiesener
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, 91054, Germany
| | - Markus Schueler
- Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, Berlin, 10117, Germany
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12
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Sun X, Niu X, Qin N, Shan X, Zhao J, Ma C, Xu R, Mishra B. Novel insights into the regulation of LATS2 kinase in prehierarchical follicle development via the Hippo pathway in hen ovary. Poult Sci 2021; 100:101454. [PMID: 34649058 PMCID: PMC8517930 DOI: 10.1016/j.psj.2021.101454] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/19/2021] [Accepted: 08/26/2021] [Indexed: 11/29/2022] Open
Abstract
The large tumor suppressor homolog 2 (LATS2), one of the central regulators of the Hippo/MST signaling pathway, plays an inhibitory role in ovarian function and different organ development and growth in mammals. However, the exact roles and molecular regulatory mechanisms of LATS2 in chicken granulosa cell (GC) proliferation, differentiation, and steroidogenesis required for ovarian follicle growth, development, and follicular selection remain poorly understood. This study demonstrated that the LATS2 protein was predominantly localized in the oocytes and undifferentiated GCs of various-sized prehierarchical follicles of the hen ovary. Expression levels of LATS2 mRNA were significantly higher in the smaller follicles (from 1 mm to 5.9 mm in diameter) and the GCs than in the larger follicles (6–6.9 mm in diameter up to F1). Moreover, we found that high levels of LATS2 suppressed the GC proliferation and the mRNA and protein expression of the genes serving as the biomarkers of follicle selection, GC differentiation, and steroidogenesis in the GCs, including FSHR, STAR, CYP11A1, ESR1, and ESR2. Interestingly, the LATS2 significantly downregulated SAV1 and YAP1 transcripts but upregulated the expression of STK3, STK4, TEAD1, and TEAD3 mRNA. Our study provided evidences that STK3/4-LATS2-YAP1 not only acts as a suppressor of cell proliferation and follicle selection but also LATS2 may serve as an enhancer in cell proliferation and follicle selection through the YAP1-LATS2 and the LATS2-STK3/4 feedback loops by promoting the expression of TEAD1/3 but inhibiting the expression of SAV1 transcripts in the prehierarchical follicle development of hen ovary. Taken together, the present study initially revealed the pivotal role and molecular mechanism of LATS2 in the regulation of hen prehierarchical follicle development by controlling GC proliferation, differentiation, steroidogenesis, and follicle selection via the Hippo/MST signaling pathway.
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Affiliation(s)
- Xue Sun
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Xiaotian Niu
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Ning Qin
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Xuesong Shan
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Jinghua Zhao
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Chang Ma
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Rifu Xu
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China.
| | - Birendra Mishra
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822, USA
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13
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Chen Q, Fan K, Chen X, Xie X, Huang L, Song G, Qi W. Ezrin regulates synovial angiogenesis in rheumatoid arthritis through YAP and Akt signalling. J Cell Mol Med 2021; 25:9378-9389. [PMID: 34459110 PMCID: PMC8500952 DOI: 10.1111/jcmm.16877] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 07/26/2021] [Accepted: 08/02/2021] [Indexed: 12/23/2022] Open
Abstract
This study aimed to investigate the role and regulatory mechanisms of Ezrin in synovial vessels in rheumatoid arthritis (RA). Synovial tissues were obtained from people with osteoarthritis people and patients with RA patients. We also used an antigen-induced arthritis (AIA) mice model by using Freund's adjuvant injections. Ezrin expression was analysed by immunofluorescence and immunohistochemical staining in synovial vessels of patients with RA and AIA mice. We investigated the role of Ezrin on vascular endothelial cells and its regulatory mechanism in vivo and in vitro by adenoviral transfection technology. Our results suggest a role for the Ezrin protein in proliferation, migration and angiogenesis of vascular endothelial cells in RA. We also demonstrate that Ezrin plays an important role in vascular endothelial cell migration and tube formation through regulation of the Hippo-yes-associated protein 1 (YAP) pathway. YAP, as a key protein, can further regulate the activity of PI3K/Akt signalling pathway in vascular endothelial cells. In AIA mice experiments, we observed that the inhibition of Ezrin or of its downstream YAP pathway can affect synovial angiogenesis and may lead to progression of RA. In conclusion, Ezrin plays an important role in angiogenesis in the RA synovium by regulating YAP nuclear translocation and interacting with the PI3K/Akt signalling pathway.
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Affiliation(s)
- Qiyue Chen
- Department of Special ClinicsStomatological HospitalSouthern Medical UniversityGuangzhouGuangdongChina
| | - Kai Fan
- Department of Special ClinicsStomatological HospitalSouthern Medical UniversityGuangzhouGuangdongChina
| | - Xi Chen
- Department of DermatologyNanfang HospitalSouthern Medical UniversityGuangzhouGuangdongChina
| | - Xiaobo Xie
- Department of Joint and OrthopedicsZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdongChina
| | - Li Huang
- Department of Joint and OrthopedicsZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdongChina
| | - Guangbao Song
- Department of Special ClinicsStomatological HospitalSouthern Medical UniversityGuangzhouGuangdongChina
| | - Weizhong Qi
- Department of Joint and OrthopedicsZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdongChina
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14
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Chen J, Zhang K, Zhi Y, Wu Y, Chen B, Bai J, Wang X. Tumor-derived exosomal miR-19b-3p facilitates M2 macrophage polarization and exosomal LINC00273 secretion to promote lung adenocarcinoma metastasis via Hippo pathway. Clin Transl Med 2021; 11:e478. [PMID: 34586722 PMCID: PMC8435259 DOI: 10.1002/ctm2.478] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 06/07/2021] [Accepted: 06/14/2021] [Indexed: 12/14/2022] Open
Abstract
Numerous reports have elucidated the important participation of exosomes in the communication between tumor cells and other cancer-related cells including tumor-associated macrophages (TAMs) in microenvironment. However, the interchange of exosomes between tumor cells and TAMs in the progression of lung adenocarcinoma (LUAD) remains largely enigmatic. Herein, we discovered that LUAD cells induced the M2 polarization of TAMs and the M2-polarized macrophages facilitated LUAD cell invasion and migration and tumor metastasis in vivo. In detail, LUAD cells secreted exosomes to transport miR-19b-3p into TAMs so that miR-19b-3p targeted PTPRD and inhibited the PTPRD-mediated dephosphorylation of STAT3 in TAMs, leading to STAT3 activation and M2 polarization. Also, the activated STAT3 transcriptionally induced LINC00273 in M2 macrophages and exosomal LINC00273 was transferred into LUAD cells. In LUAD cells, LINC00273 recruited NEDD4 to facilitate LATS2 ubiquitination and degradation, so that the Hippo pathway was inactivated and YAP induced the transcription of RBMX. RBMX bound to miR-19b-3p to facilitate the packaging of miR-19b-3p into LUAD cell-derived exosomes. Collectively, our results revealed the mechanism underlying the interactive communication between LUAD cells and TAMs through elucidating the exchange of exosomal miR-19b-3p and LINC00273 and proved the prometastatic effect of the interchange between two cells. These discoveries opened a new vision for developing LUAD treatment.
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Affiliation(s)
- Jing Chen
- Department of Hematology and OncologyZhongda Hospital, School of MedicineSoutheast UniversityNanjingJiangsuP. R. China
| | - Kai Zhang
- Department of Respiratory MedicineNanjing First HospitalNanjing Medical UniversityNanjingJiangsuP. R. China
| | - Yingru Zhi
- Department of GastroenterologyNanjing First HospitalNanjing Medical UniversityNanjingJiangsuP. R. China
| | - Yin Wu
- Department of RespiratoryZhongda HospitalSoutheast UniversityNanjingJiangsuP. R. China
| | - Baoan Chen
- Department of Hematology and OncologyZhongda Hospital, School of MedicineSoutheast UniversityNanjingJiangsuP. R. China
| | - Jinyu Bai
- Department of OrthopedicsThe Second Affiliated Hospital of Soochow UniversitySuzhouJiangsuP. R. China
| | - Xuerong Wang
- Department of PharmacologyNanjing Medical UniversityNanjingJiangsuP. R. China
- Center for Clinical Pathology and LaboratoryAffiliated Hospital of YifuNanjing Medical UniversityNanjingJiangsuP. R. China
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15
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Zhang Y, He L, Huang L, Yao S, Lin N, Li P, Xu H, Wu X, Xu J, Lu Y, Li Y, Zhu S. Oncogenic PAX6 elicits CDK4/6 inhibitor resistance by epigenetically inactivating the LATS2-Hippo signaling pathway. Clin Transl Med 2021; 11:e503. [PMID: 34459131 PMCID: PMC8382979 DOI: 10.1002/ctm2.503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 07/04/2021] [Accepted: 07/11/2021] [Indexed: 12/13/2022] Open
Abstract
Intrinsic resistance to CDK4/6 inhibitors hinders their clinical utility in cancer treatment. Furthermore, the predictive markers of CDK4/6 inhibitors in gastric cancer (GC) remain incompletely described. Here, we found that PAX6 expression was negatively correlated with the response to palbociclib in vitro and in vivo in GC. We observed that the PAX6 expression level was negatively correlated with the overall survival of GC patients and further showed that PAX6 can promote GC cell proliferation and the cell cycle. The cell cycle is regulated by the interaction of cyclins with their partner serine/threonine cyclin-dependent kinases (CDKs), and the G1/S-phase transition is the main target of CDK4/6 inhibitors. Therefore, we tested whether PAX6 expression was correlated with the GC response to palbociclib. We found that PAX6 hypermethylates the promoter of LATS2 and inactivates the Hippo pathway, which upregulates cyclin D1 (CCND1) expression. This results in a suppressed response to palbociclib in GC. Furthermore, we found that the induction of the Hippo signaling pathway or treatment with a DNA methylation inhibitor could overcome PAX6-induced palbociclib resistance in GC. These findings uncover a tumor promoter function of PAX6 in GC and establish overexpressed PAX6 as a mechanism of resistance to palbociclib.
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Affiliation(s)
- Yi Zhang
- Department of Gastroenterology and Hepatology, the First Affiliated HospitalSun Yat‐sen UniversityNo.58 Zhongshan 2nd RoadGuangzhou510630China
- Department of Hepatobiliary surgery, the Third Affiliated HospitalSun Yat‐sen UniversityNo.600 Tian he RoadGuangzhou510630China
- Department of Hepatic surgery, the First Affiliated HospitalSun Yat‐sen UniversityNo.58 Zhongshan 2nd RoadGuangzhou510080China
| | - Long‐Jun He
- State Key Laboratory of Oncology in South ChinaCancer CenterSun Yat‐sen UniversityNo.651 Dongfeng Road EastGuangzhou510060China
| | - Lin‐Lin Huang
- Department of Gastroenterology and Hepatology, the First Affiliated HospitalSun Yat‐sen UniversityNo.58 Zhongshan 2nd RoadGuangzhou510630China
- Department of Gastroenterology and HepatologyGuangdong Provincial People's Hospital/Guangdong Academy of Medical
SciencesNo.106 Zhongshan 2nd RoadGuangzhou510080China
| | - Sheng Yao
- Department of Gastroenterology and Hepatology, the First Affiliated HospitalSun Yat‐sen UniversityNo.58 Zhongshan 2nd RoadGuangzhou510630China
| | - Nan Lin
- Department of Hepatobiliary surgery, the Third Affiliated HospitalSun Yat‐sen UniversityNo.600 Tian he RoadGuangzhou510630China
| | - Ping Li
- Department of Gastroenterology and Hepatology, the First Affiliated HospitalSun Yat‐sen UniversityNo.58 Zhongshan 2nd RoadGuangzhou510630China
| | - Hui‐Wen Xu
- Department of Gastroenterology and Hepatology, the First Affiliated HospitalSun Yat‐sen UniversityNo.58 Zhongshan 2nd RoadGuangzhou510630China
| | - Xi‐Wen Wu
- Department of Hepatic surgery, the First Affiliated HospitalSun Yat‐sen UniversityNo.58 Zhongshan 2nd RoadGuangzhou510080China
| | - Jian‐Liang Xu
- Department of Hepatobiliary surgery, the Third Affiliated HospitalSun Yat‐sen UniversityNo.600 Tian he RoadGuangzhou510630China
| | - Yi Lu
- Department of Hepatobiliary surgery, the Third Affiliated HospitalSun Yat‐sen UniversityNo.600 Tian he RoadGuangzhou510630China
| | - Yan‐Jie Li
- Department of Hepatobiliary surgery, the Third Affiliated HospitalSun Yat‐sen UniversityNo.600 Tian he RoadGuangzhou510630China
| | - Sen‐Lin Zhu
- Department of Gastroenterology and Hepatology, the First Affiliated HospitalSun Yat‐sen UniversityNo.58 Zhongshan 2nd RoadGuangzhou510630China
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16
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Van Sciver N, Ohashi M, Pauly NP, Bristol JA, Nelson SE, Johannsen EC, Kenney SC. Hippo signaling effectors YAP and TAZ induce Epstein-Barr Virus (EBV) lytic reactivation through TEADs in epithelial cells. PLoS Pathog 2021; 17:e1009783. [PMID: 34339458 PMCID: PMC8360610 DOI: 10.1371/journal.ppat.1009783] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 08/12/2021] [Accepted: 07/05/2021] [Indexed: 12/13/2022] Open
Abstract
The Epstein-Barr virus (EBV) human herpesvirus is associated with B-cell and epithelial-cell malignancies, and both the latent and lytic forms of viral infection contribute to the development of EBV-associated tumors. Here we show that the Hippo signaling effectors, YAP and TAZ, promote lytic EBV reactivation in epithelial cells. The transcriptional co-activators YAP/TAZ (which are inhibited by Hippo signaling) interact with DNA-binding proteins, particularly TEADs, to induce transcription. We demonstrate that depletion of either YAP or TAZ inhibits the ability of phorbol ester (TPA) treatment, cellular differentiation or the EBV BRLF1 immediate-early (IE) protein to induce lytic EBV reactivation in oral keratinocytes, and show that over-expression of constitutively active forms of YAP and TAZ reactivate lytic EBV infection in conjunction with TEAD family members. Mechanistically, we find that YAP and TAZ interact with, and activate, the EBV BZLF1 immediate-early promoter. Furthermore, we demonstrate that YAP, TAZ, and TEAD family members are expressed at much higher levels in epithelial cell lines in comparison to B-cell lines, and find that EBV infection of oral keratinocytes increases the level of activated (dephosphorylated) YAP and TAZ. Finally, we have discovered that lysophosphatidic acid (LPA), a known YAP/TAZ activator that plays an important role in inflammation, induces EBV lytic reactivation in epithelial cells through a YAP/TAZ dependent mechanism. Together these results establish that YAP/TAZ are powerful inducers of the lytic form of EBV infection and suggest that the ability of EBV to enter latency in B cells at least partially reflects the extremely low levels of YAP/TAZ and TEADs in this cell type.
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Affiliation(s)
- Nicholas Van Sciver
- Department of Oncology, School of Medicine and Public Health, University of Wisconsin- Madison, Madison, Wisconsin, United States of America
- Cellular and Molecular Pathology Graduate Training Program, University of Wisconsin- Madison, Madison, Wisconsin, United States of America
| | - Makoto Ohashi
- Department of Oncology, School of Medicine and Public Health, University of Wisconsin- Madison, Madison, Wisconsin, United States of America
| | - Nicholas P. Pauly
- Department of Oncology, School of Medicine and Public Health, University of Wisconsin- Madison, Madison, Wisconsin, United States of America
| | - Jillian A. Bristol
- Department of Oncology, School of Medicine and Public Health, University of Wisconsin- Madison, Madison, Wisconsin, United States of America
| | - Scott E. Nelson
- Department of Oncology, School of Medicine and Public Health, University of Wisconsin- Madison, Madison, Wisconsin, United States of America
| | - Eric C. Johannsen
- Department of Oncology, School of Medicine and Public Health, University of Wisconsin- Madison, Madison, Wisconsin, United States of America
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Shannon C. Kenney
- Department of Oncology, School of Medicine and Public Health, University of Wisconsin- Madison, Madison, Wisconsin, United States of America
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
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17
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Yang W, Lu X, Zhang T, Han W, Li J, He W, Jia Y, Zhao K, Qin A, Qian Y. TAZ inhibits osteoclastogenesis by attenuating TAK1/NF-κB signaling. Bone Res 2021; 9:33. [PMID: 34253712 PMCID: PMC8275679 DOI: 10.1038/s41413-021-00151-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 01/25/2021] [Accepted: 03/17/2021] [Indexed: 12/22/2022] Open
Abstract
Osteoporosis is an osteolytic disorder commonly associated with excessive osteoclast formation. Transcriptional coactivator with PDZ-binding motif (TAZ) is a key downstream effector of the Hippo signaling pathway; it was suggested to be involved in the regulation of bone homeostasis. However, the exact role of TAZ in osteoclasts has not yet been established. In this study, we demonstrated that global knockout and osteoclast-specific knockout of TAZ led to a low-bone mass phenotype due to elevated osteoclast formation, which was further evidenced by in vitro osteoclast formation assays. Moreover, the overexpression of TAZ inhibited RANKL-induced osteoclast formation, whereas silencing of TAZ reduced it. Mechanistically, TAZ bound to TGF-activated kinase 1 (TAK1) and reciprocally inhibited NF-κB signaling, suppressing osteoclast differentiation. Collectively, our findings highlight an essential role of TAZ in the regulation of osteoclastogenesis in osteoporosis and its underlying mechanism.
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Affiliation(s)
- Wanlei Yang
- Department of Orthopaedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, PR China
| | - Xuanyuan Lu
- Department of Orthopaedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, PR China
| | - Tan Zhang
- Department of Orthopaedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, PR China
| | - Weiqi Han
- Department of Orthopaedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, PR China
| | - Jianlei Li
- Department of Orthopaedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, PR China
| | - Wei He
- Department of Orthopaedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, PR China
| | - Yewei Jia
- Department of Orthopaedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, PR China
| | - Kangxian Zhao
- Department of Orthopaedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, PR China
| | - An Qin
- Department of Orthopedic Surgery, Shanghai Key Laboratory of Orthopedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Yu Qian
- Department of Orthopaedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, PR China.
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18
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Kim H, Son S, Ko Y, Lee JE, Kim S, Shin I. YAP, CTGF and Cyr61 are overexpressed in tamoxifen-resistant breast cancer and induce transcriptional repression of ERα. J Cell Sci 2021; 134:269035. [PMID: 34096606 DOI: 10.1242/jcs.256503] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 04/22/2021] [Indexed: 11/20/2022] Open
Abstract
About 70% of breast cancers overexpress estrogen receptor α (ERα, encoded by ESR1). Tamoxifen, a competitive inhibitor of estrogen that binds to ER, has been widely used as a treatment for ER-positive breast cancer. However, 20-30% of breast cancer is resistant to tamoxifen treatment. The mechanisms underlying tamoxifen resistance remain elusive. We found that Yes-associated protein (YAP; also known as YAP1), connective tissue growth factor (CTGF; also known as CCN2) and cysteine-rich angiogenic inducer 61 (Cyr61; also known as CCN1) are overexpressed, while ERα is downregulated in tamoxifen-resistant breast cancer. Inhibition of YAP, CTGF and Cyr61 restored ERα expression and increased sensitivity to tamoxifen. Overexpression of YAP, CTGF, and Cyr61 led to downregulation of ERα and conferred resistance to tamoxifen in ER-positive breast cancer cells. Mechanistically, CTGF and Cyr61 downregulated ERα expression at the transcriptional level by directly binding to the regulatory regions of the ERα-encoding gene, leading to increased tamoxifen resistance. Also, CTGF induced Glut3 (also known as SLC2A3) expression, leading to increased glycolysis, which enhanced cell proliferation and migration in tamoxifen-resistant cells. Together, these results demonstrate a novel role of YAP, CTGF and Cyr61 in tamoxifen resistance and provide a molecular basis for their function in tamoxifen-resistant breast cancer.
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Affiliation(s)
- Hyungjoo Kim
- Department of Life Science, Hanyang University, Seoul 04763, Korea
| | - Seogho Son
- Department of Life Science, Hanyang University, Seoul 04763, Korea
| | - Yunhyo Ko
- Department of Life Science, Hanyang University, Seoul 04763, Korea
| | - Jeong Eon Lee
- Department of Breast Cancer Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea
| | - Sangmin Kim
- Department of Breast Cancer Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea
| | - Incheol Shin
- Department of Life Science, Hanyang University, Seoul 04763, Korea.,Natural Science Institute, Hanyang University, Seoul 04763, Korea
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19
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Wang M, Xu T, Feng W, Liu J, Wang Z. Advances in Understanding the LncRNA-Mediated Regulation of the Hippo Pathway in Cancer. Onco Targets Ther 2021; 14:2397-2415. [PMID: 33854336 PMCID: PMC8039192 DOI: 10.2147/ott.s283157] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 03/08/2021] [Indexed: 12/24/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) are a class of RNA molecules that are longer than 200 nucleotides and cannot encode proteins. Over the past decade, lncRNAs have been defined as regulatory elements of multiple biological processes, and their aberrant expression contributes to the development and progression of various malignancies. Recent studies have shown that lncRNAs are involved in key cancer-related signaling pathways, including the Hippo signaling pathway, which plays a prominent role in controlling organ size and tissue homeostasis by regulating cell proliferation, apoptosis, and differentiation. However, dysregulation of this pathway is associated with pathological conditions, especially cancer. Accumulating evidence has revealed that lncRNAs can modulate the Hippo signaling pathway in cancer. In this review, we elaborate on the role of the Hippo signaling pathway and the advances in the understanding of its lncRNA-mediated regulation in cancer. This review provides additional insight into carcinogenesis and will be of great clinical value for developing novel early detection and treatment strategies for this deadly disease.
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Affiliation(s)
- Mengwei Wang
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Tianwei Xu
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Wenyan Feng
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Junxia Liu
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Zhaoxia Wang
- Cancer Medical Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
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20
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Seo Y, Park SY, Kim HS, Nam JS. The Hippo-YAP Signaling as Guardian in the Pool of Intestinal Stem Cells. Biomedicines 2020; 8:biomedicines8120560. [PMID: 33271948 PMCID: PMC7760694 DOI: 10.3390/biomedicines8120560] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 12/17/2022] Open
Abstract
Despite endogenous insults such as mechanical stress and danger signals derived from the microbiome, the intestine can maintain its homeostatic condition through continuous self-renewal of the crypt–villus axis. This extraordinarily rapid turnover of intestinal epithelium, known to be 3 to 5 days, can be achieved by dynamic regulation of intestinal stem cells (ISCs). The crypt base-located leucine-rich repeat-containing G-protein-coupled receptor 5-positive (Lgr5+) ISCs maintain intestinal integrity in the steady state. Under severe damage leading to the loss of conventional ISCs, quiescent stem cells and even differentiated cells can be reactivated into stem-cell-like cells with multi-potency and contribute to the reconstruction of the intestinal epithelium. This process requires fine-tuning of the various signaling pathways, including the Hippo–YAP system. In this review, we summarize recent advances in understanding the correlation between Hippo–YAP signaling and intestinal homeostasis, repair, and tumorigenesis, focusing specifically on ISC regulation.
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Affiliation(s)
- Yoojin Seo
- Department of Life Science in Dentistry, School of Dentistry, Pusan National University, Yangsan 50612, Korea;
- Dental and Life Science Institute, Pusan National University, Yangsan 50612, Korea
| | - So-Yeon Park
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 61005, Korea;
| | - Hyung-Sik Kim
- Department of Life Science in Dentistry, School of Dentistry, Pusan National University, Yangsan 50612, Korea;
- Dental and Life Science Institute, Pusan National University, Yangsan 50612, Korea
- Correspondence: (H.-S.K.); (J.-S.N.); Tel.: +82-51-510-8231 (H.-S.K.); +82-62-715-2893 (J.-S.N.)
| | - Jeong-Seok Nam
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 61005, Korea;
- Correspondence: (H.-S.K.); (J.-S.N.); Tel.: +82-51-510-8231 (H.-S.K.); +82-62-715-2893 (J.-S.N.)
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21
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Mesrouze Y, Bokhovchuk F, Meyerhofer M, Zimmermann C, Fontana P, Erdmann D, Chène P. Study of the TEAD-binding domain of the YAP protein from animal species. Protein Sci 2020; 30:339-349. [PMID: 33146905 PMCID: PMC7784741 DOI: 10.1002/pro.3988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/18/2020] [Accepted: 10/30/2020] [Indexed: 11/30/2022]
Abstract
The Hippo signaling pathway, which plays a central role in the control of organ size in animals, is well conserved in metazoans. The most downstream elements of this pathway are the TEAD transcription factors that are regulated by their association with the transcriptional coactivator YAP. Therefore, the creation of the binding interface that ensures the formation of the YAP:TEAD complex is a critical molecular recognition event essential for the development/survival of many living organisms. In this report, using the available structural information on the YAP:TEAD complex, we study the TEAD‐binding domain of YAP from different animal species. This analysis of more than 400 amino acid sequences reveals that the residues from YAP involved in the formation of the two main contact regions with TEAD are very well conserved. Therefore, the binding interface between YAP and TEAD, as found in humans, probably appeared at an early evolutionary stage in metazoans. We find that, in contrast to most other animal species, several Actinopterygii species possess YAP variants with a different TEAD‐binding domain. However, these variants bind to TEAD with a similar affinity. Our studies show that the protein identified as a YAP homolog in Caenorhabditis elegans does not contain the TEAD‐binding domain found in YAP of other metazoans. Finally, we do not identify in non‐metazoan species, amino acid sequences containing both a TEAD‐binding domain, as in metazoan YAP, and WW domain(s).
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Affiliation(s)
- Yannick Mesrouze
- Disease Area Oncology, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Fedir Bokhovchuk
- Disease Area Oncology, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Marco Meyerhofer
- Disease Area Oncology, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Catherine Zimmermann
- Disease Area Oncology, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Patrizia Fontana
- Disease Area Oncology, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Dirk Erdmann
- Disease Area Oncology, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Patrick Chène
- Disease Area Oncology, Novartis Institutes for Biomedical Research, Basel, Switzerland
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22
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Wu T, Wang S, Wang L, Zhang W, Chen W, Lv X, Li Y, Hussain Z, Sun W. Long Noncoding RNA (lncRNA) CTTN-IT1 Elevates Skeletal Muscle Satellite Cell Proliferation and Differentiation by Acting as ceRNA for YAP1 Through Absorbing miR-29a in Hu Sheep. Front Genet 2020; 11:843. [PMID: 32849826 PMCID: PMC7427492 DOI: 10.3389/fgene.2020.00843] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 07/13/2020] [Indexed: 12/26/2022] Open
Abstract
Characterizing the factors that regulate the growth and development of muscle is central to animal production. Skeletal muscle satellite cells (SMSCs) provide an important material for simulating the proliferation and differentiation of muscle cells. YAP1, which can promote muscle growth, is closely related to the proliferation of SMSCs in Hu sheep (Ovis aries). In addition, some miRNAs, such as miR-541-3p, miR-142-5p, and miR-29a, can play critical roles in muscle growth by specifically binding with their target mRNAs. Meanwhile, lncRNA can competitively bind these miRNAs and reduce the regulatory effect of miRNAs on their target genes and thus play critical roles themselves in muscle growth. However, the regulatory molecular mechanism of miRNA and lncRNA on SMSC proliferation through YAP1 remains unclear. Here, we characterized the regulatory network among YAP1 and its targeted miRNAs and lncRNAs in Hu sheep SMSCs. The potential ncRNAs that regulate YAP1 (miR-29a and CTTN-IT1) were predicted through multilevel bioinformatics analysis. Dual-luciferase assays, RT-qPCR, and western blots revealed that miR-29a can significantly reduce the mRNA and protein expression level by binding to a specific 3′-UTR of YAP1 (P < 0.05), while CTTN-IT1 can restore the expression of YAP1 through competitive binding to miR-29a. Furthermore, the mRNA and protein expression levels of MyoG, MyoD, and MyHC showed that miR-29a can inhibit the expression of genes related to the differentiation of SMSCs, and CTTN-IT1 can increase the expression of these same genes. Thus, miR-29a may inhibit the differentiation of SMSCs and CTTN-IT1 can restore this inhibition. The EdU staining assay indicated that excessive miR-29a can significantly reduce the proliferation ability of SMSCs (P < 0.05), while overexpression of CTTN-IT1 can significantly increase the proliferation of SMSCs (P < 0.01). CTTN-IT1 is a novel lncRNA that is a competing endogenous RNA (ceRNA) of miR-29a and can promote SMSC proliferation and differentiation by restoring the expression of YAP1 when it is inhibited by miR-29a in Hu sheep. Overall, our findings construct a CTTN-IT1-miR-29a-YAP1 regulatory network that will help contribute new insight into improving the muscle development of Hu sheep.
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Affiliation(s)
- Tianyi Wu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Shanhe Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Lihong Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Weibo Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Weihao Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Xiaoyang Lv
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yue Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Zahid Hussain
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Wei Sun
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
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23
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Sestrin2 inhibits YAP activation and negatively regulates corneal epithelial cell proliferation. Exp Mol Med 2020; 52:951-962. [PMID: 32528056 PMCID: PMC7338388 DOI: 10.1038/s12276-020-0446-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 04/08/2020] [Indexed: 01/14/2023] Open
Abstract
Corneal wound healing is essential for the maintenance of corneal integrity and transparency and involves a series of physiological processes that depend on the proliferation of epithelial cells. However, the molecular mechanisms that control corneal epithelial cell proliferation are poorly understood. Here, we show that Sestrin2, a stress-inducible protein, is downregulated in the corneal epithelium during wound healing and that the proliferation of epithelial basal cells is enhanced in Sestrin2-deficient mice. We also show that YAP, a major downstream effector of the Hippo signaling pathway, regulates cell proliferation during corneal epithelial wound repair and that Sestrin2 suppresses its activity. Moreover, increased levels of reactive oxygen species in the Sestrin2-deficient corneal epithelium promote the nuclear localization and dephosphorylation of YAP, activating it to enhance the proliferation of corneal epithelial cells. These results reveal that Sestrin2 is a negative regulator of YAP, which regulates the proliferative capacity of basal epithelial cells, and may serve as a potential therapeutic target for corneal epithelial damage.
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24
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Lahav N, Rotem-Bamberger S, Fahoum J, Dodson EJ, Kraus Y, Mousa R, Metanis N, Friedler A, Schueler-Furman O. Phosphorylation of the WWOX Protein Regulates Its Interaction with p73. Chembiochem 2020; 21:1843-1851. [PMID: 32185845 DOI: 10.1002/cbic.202000032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/19/2020] [Indexed: 11/10/2022]
Abstract
We describe a molecular characterization of the interaction between the cancer-related proteins WWOX and p73. This interaction is mediated by the first of two WW domains (WW1) of WWOX and a PPXY-motif-containing region in p73. While phosphorylation of Tyr33 of WWOX and association with p73 are known to affect apoptotic activity, the quantitative effect of phosphorylation on this specific interaction is determined here for the first time. Using ITC and fluorescence anisotropy, we measured the binding affinity between WWOX domains and a p73 derived peptide, and showed that this interaction is regulated by Tyr phosphorylation of WW1. Chemical synthesis of the phosphorylated domains of WWOX revealed that the binding affinity of WWOX to p73 is decreased when WWOX is phosphorylated. This result suggests a fine-tuning of binding affinity in a differential, ligand-specific manner: the decrease in binding affinity of WWOX to p73 can free both partners to form new interactions.
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Affiliation(s)
- Noa Lahav
- The Institute of Chemistry, The Hebrew University of Jerusalem Edmond J. Safra Campus, Givat Ram, 91904, Jerusalem, Israel
| | - Shahar Rotem-Bamberger
- Department of Microbiology and Molecular Genetics, Institute of Biomedical Research Israel-Canada, Faculty of Medicine, The Hebrew University of Jerusalem, Hadassah Medical School POB 12272, 91120, Jerusalem, Israel
| | - Jamal Fahoum
- Department of Microbiology and Molecular Genetics, Institute of Biomedical Research Israel-Canada, Faculty of Medicine, The Hebrew University of Jerusalem, Hadassah Medical School POB 12272, 91120, Jerusalem, Israel
| | - Emma-Joy Dodson
- Department of Microbiology and Molecular Genetics, Institute of Biomedical Research Israel-Canada, Faculty of Medicine, The Hebrew University of Jerusalem, Hadassah Medical School POB 12272, 91120, Jerusalem, Israel
| | - Yahel Kraus
- The Institute of Chemistry, The Hebrew University of Jerusalem Edmond J. Safra Campus, Givat Ram, 91904, Jerusalem, Israel
| | - Reem Mousa
- The Institute of Chemistry, The Hebrew University of Jerusalem Edmond J. Safra Campus, Givat Ram, 91904, Jerusalem, Israel
| | - Norman Metanis
- The Institute of Chemistry, The Hebrew University of Jerusalem Edmond J. Safra Campus, Givat Ram, 91904, Jerusalem, Israel
| | - Assaf Friedler
- The Institute of Chemistry, The Hebrew University of Jerusalem Edmond J. Safra Campus, Givat Ram, 91904, Jerusalem, Israel
| | - Ora Schueler-Furman
- Department of Microbiology and Molecular Genetics, Institute of Biomedical Research Israel-Canada, Faculty of Medicine, The Hebrew University of Jerusalem, Hadassah Medical School POB 12272, 91120, Jerusalem, Israel
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25
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Characterization of a novel compound that promotes myogenesis via Akt and transcriptional co-activator with PDZ-binding motif (TAZ) in mouse C2C12 cells. PLoS One 2020; 15:e0231265. [PMID: 32267872 PMCID: PMC7141682 DOI: 10.1371/journal.pone.0231265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 03/19/2020] [Indexed: 11/19/2022] Open
Abstract
Transcriptional co-activator with PDZ-binding motif (TAZ) plays versatile roles in the regulation of cell proliferation and differentiation. TAZ activity changes in response to the cellular environment such as mechanic and nutritional stimuli, osmolarity, and hypoxia. To understand the physiological roles of TAZ, chemical compounds that activate TAZ in cells are useful as experimental reagents. Kaempferol, TM-25659, and ethacridine are reported as TAZ activators. However, as each TAZ activator has a distinct property in cellular functions, additional TAZ activators are awaiting. We screened for TAZ activators and previously reported IB008738 as a TAZ activator that promotes myogenesis in C2C12 cells. In this study, we have characterized IBS004735 that was obtained in the same screening. IBS004735 also promotes myogenesis in C2C12 cells, but is not similar to IBS008738 in the structure. IBS004735 activates TAZ via Akt and has no effect on TAZ phosphorylation, which is the well-described key modification to regulate TAZ activity. Thus, we introduce IBS004735 as a novel TAZ activator that regulates TAZ in a yet unidentified mechanism.
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26
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Chen Y, Su X, Qin Q, Yu Y, Jia M, Zhang H, Li H, Pei L. New insights into phenotypic switching of VSMCs induced by hyperhomocysteinemia: Role of endothelin-1 signaling. Biomed Pharmacother 2020; 123:109758. [DOI: 10.1016/j.biopha.2019.109758] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/20/2019] [Accepted: 11/29/2019] [Indexed: 12/30/2022] Open
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27
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Miao J, Kyoyama H, Liu L, Chan G, Wang Y, Urisman A, Yang Y, Liu S, Xu Z, Bin H, Li H, Jablons DM, You L. Inhibition of cyclin-dependent kinase 7 down-regulates yes-associated protein expression in mesothelioma cells. J Cell Mol Med 2020; 24:1087-1098. [PMID: 31755214 PMCID: PMC6933402 DOI: 10.1111/jcmm.14841] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 09/30/2019] [Accepted: 10/20/2019] [Indexed: 01/23/2023] Open
Abstract
Cyclin-dependent kinase 7 (CDK7) is a protein kinase that plays a major role in transcription initiation. Yes-associated protein (YAP) is a main effector of the Hippo/YAP signalling pathway. Here, we investigated the role of CDK7 on YAP regulation in human malignant pleural mesothelioma (MPM). We found that in microarray samples of human MPM tissue, immunohistochemistry staining showed correlation between the expression level of CDK7 and YAP (n = 70, r = .513). In MPM cells, CDK7 expression level was significantly correlated with GTIIC reporter activity (r = .886, P = .019). Inhibition of CDK7 by siRNA decreased the YAP protein level and the GTIIC reporter activity in the MPM cell lines 211H, H290 and H2052. Degradation of the YAP protein was accelerated after CDK7 knockdown in 211H, H290 and H2052 cells. Inhibition of CDK7 reduced tumour cell migration and invasion, as well as tumorsphere formation ability. Restoration of the CDK7 gene rescued the YAP protein level and GTIIC reporter activity after siRNA knockdown in 211H and H2052 cells. Finally, we performed a co-immunoprecipitation analysis using an anti-YAP antibody and captured the CDK7 protein in 211H cells. Our results suggest that CDK7 inhibition reduces the YAP protein level by promoting its degradation and suppresses the migration and invasion of MPM cells. Cyclin-dependent kinase 7 may be a promising therapeutic target for MPM.
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Affiliation(s)
- Jinbai Miao
- Department of SurgeryThoracic Oncology LaboratoryComprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
- Department of Thoracic SurgeryBeijing Chao‐Yang HospitalAffiliated with Capital Medical UniversityBeijingChina
| | - Hiroyuki Kyoyama
- Department of SurgeryThoracic Oncology LaboratoryComprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Luwei Liu
- Department of SurgeryThoracic Oncology LaboratoryComprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
- Class of 2018Stony Brook UniversityStony BrookNYUSA
| | - Geraldine Chan
- Department of SurgeryThoracic Oncology LaboratoryComprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
- Class of 2020Medical College of WisconsinMilwaukeeWIUSA
| | - Yucheng Wang
- Department of SurgeryThoracic Oncology LaboratoryComprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Anatoly Urisman
- Department of PathologyUniversity of CaliforniaSan FranciscoCAUSA
| | - Yi‐Lin Yang
- Department of SurgeryThoracic Oncology LaboratoryComprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Shu Liu
- Department of SurgeryThoracic Oncology LaboratoryComprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Zhidong Xu
- Department of SurgeryThoracic Oncology LaboratoryComprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Hu Bin
- Department of Thoracic SurgeryBeijing Chao‐Yang HospitalAffiliated with Capital Medical UniversityBeijingChina
| | - Hui Li
- Department of Thoracic SurgeryBeijing Chao‐Yang HospitalAffiliated with Capital Medical UniversityBeijingChina
| | - David M. Jablons
- Department of SurgeryThoracic Oncology LaboratoryComprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Liang You
- Department of SurgeryThoracic Oncology LaboratoryComprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
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28
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Takaguri A, Akihiro O, Sasano J, Satoh K. Involvement of Yes-associated protein 1 (YAP1) in doxorubicin-induced cytotoxicity in H9c2 cardiac cells. Cell Biol Int 2019; 44:873-881. [PMID: 31833156 DOI: 10.1002/cbin.11285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 12/10/2019] [Indexed: 11/06/2022]
Abstract
Cardiac cell death is one of the major events implicated in doxorubicin-induced cardiotoxicity, which leads to heart failure. We recently reported that Yes-associated protein 1 (YAP1) regulates cell survival and apoptosis. However, it is unclear whether YAP1 regulates doxorubicin-induced cell death in cardiomyocytes. We investigated whether YAP1 is involved in doxorubicin-induced cell death using H9c2 cardiac cells and mouse heart. In an in vivo study, YAP1 protein expression was significantly decreased in hearts of doxorubicin-treated mice with increased caspase-3 activation. Doxorubicin also caused cell death by increasing caspase-3 activation in H9c2 cells. Doxorubicin reduced YAP1 protein expression and messenger RNA expression accompanied by increased phosphorylation of YAP1 at Ser127. Doxorubicin further increased cell death with increased caspase-3/7 activation in the absence of YAP1 when compared with doxorubicin or siYAP1 treatment alone. Overexpression of constitutively active YAP1 (YAP1-5SA) using an adenovirus gene transfer technique significantly reversed doxorubicin-induced cell death by decreasing caspase-3/7 activation in H9c2 cells. Akt, a potential prosurvival factor, decreased in doxorubicin- and YAP1 short interfering RNA (siRNA)-treated cells. Doxorubicin further significantly decreased Akt protein expression when YAP1 was silenced. Overexpression of YAP1 canceled decreased Akt protein expression induced by doxorubicin treatment in H9c2 cells. In conclusion, these results suggest that doxorubicin-induced cardiac cell death is mediated in part by down-regulation of YAP1 and YAP1-targeted gene, Akt. Modulating YAP1 and its related Hippo pathway on local cardiomyocytes may be a promising therapeutic approach for doxorubicin-induced cardiotoxicity.
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Affiliation(s)
- Akira Takaguri
- Department of Pharmacology, Hokkaido University of Science, 7-15-4-1 Maeda, Teine-ku, Sapporo, 006-8590, Japan
| | - Ohmiya Akihiro
- Department of Pharmacology, Hokkaido University of Science, 7-15-4-1 Maeda, Teine-ku, Sapporo, 006-8590, Japan
| | - Jun Sasano
- Department of Pharmacology, Hokkaido University of Science, 7-15-4-1 Maeda, Teine-ku, Sapporo, 006-8590, Japan
| | - Kumi Satoh
- Department of Pharmacology, Hokkaido University of Science, 7-15-4-1 Maeda, Teine-ku, Sapporo, 006-8590, Japan
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29
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Yang Z, Joyner AL. YAP1 is involved in replenishment of granule cell precursors following injury to the neonatal cerebellum. Dev Biol 2019; 455:458-472. [PMID: 31376393 DOI: 10.1016/j.ydbio.2019.07.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 07/30/2019] [Accepted: 07/30/2019] [Indexed: 01/08/2023]
Abstract
The cerebellum undergoes major rapid growth during the third trimester and early neonatal stage in humans, making it vulnerable to injuries in pre-term babies. Experiments in mice have revealed a remarkable ability of the neonatal cerebellum to recover from injuries around birth. In particular, recovery following irradiation-induced ablation of granule cell precursors (GCPs) involves adaptive reprogramming of Nestin-expressing glial progenitors (NEPs). Sonic hedgehog signaling is required for the initial step in NEP reprogramming; however, the full spectrum of developmental signaling pathways that promote NEP-driven regeneration is not known. Since the growth regulatory Hippo pathway has been implicated in the repair of several tissue types, we tested whether Hippo signaling is involved in regeneration of the cerebellum. Using mouse models, we found that the Hippo pathway transcriptional co-activator YAP1 (Yes-associated protein 1) but not TAZ (transcriptional coactivator with PDZ binding motif, or WWTR1) is required in NEPs for full recovery of cerebellar growth following irradiation one day after birth. Although Yap1 plays only a minor role during normal development in differentiation of NEPs or GCPs, the size of the cerebellum, and in particular the internal granule cell layer produced by GCPs, is significantly reduced in Yap1 mutants after irradiation, and the organization of Purkinje cells and Bergmann glial fibers is disrupted. The initial proliferative response of Yap1 mutant NEPs to irradiation is normal and the cells migrate to the GCP niche, but subsequently there is increased cell death of GCPs and altered migration of granule cells, possibly due to defects in Bergmann glia. Moreover, loss of Taz along with Yap1 in NEPs does not abrogate regeneration or alter development of the cerebellum. Our study provides new insights into the molecular signaling underlying postnatal cerebellar development and regeneration.
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Affiliation(s)
- Zhaohui Yang
- Biochemistry, Cell and Molecular Biology Program, Weill Cornell Graduate School of Medical Sciences, New York, NY, 10065, United States; Developmental Biology Program, Sloan Kettering Institute, New York, NY, 10065, United States
| | - Alexandra L Joyner
- Biochemistry, Cell and Molecular Biology Program, Weill Cornell Graduate School of Medical Sciences, New York, NY, 10065, United States; Developmental Biology Program, Sloan Kettering Institute, New York, NY, 10065, United States.
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30
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Zemke NR, Gou D, Berk AJ. Dedifferentiation by adenovirus E1A due to inactivation of Hippo pathway effectors YAP and TAZ. Genes Dev 2019; 33:828-843. [PMID: 31171701 PMCID: PMC6601516 DOI: 10.1101/gad.324814.119] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 04/26/2019] [Indexed: 01/09/2023]
Abstract
In this study, Zemke et al. show that E1A inactivates the Hippo pathway-regulated TEAD coactivators YAP and TAZ by causing their sequestration in the cytoplasm. Their findings suggest that YAP/TAZ function in a developmental checkpoint controlled by signaling from the actin cytoskeleton that prevents differentiation of a progenitor cell until it is in the correct cellular and tissue environment. Adenovirus transformed cells have a dedifferentiated phenotype. Eliminating E1A in transformed human embryonic kidney cells derepressed ∼2600 genes, generating a gene expression profile closely resembling mesenchymal stem cells (MSCs). This was associated with a dramatic change in cell morphology from one with scant cytoplasm and a globular nucleus to one with increased cytoplasm, extensive actin stress fibers, and actomyosin-dependent flattening against the substratum. E1A-induced hypoacetylation at histone H3 Lys27 and Lys18 (H3K27/18) was reversed. Most of the increase in H3K27/18ac was in enhancers near TEAD transcription factors bound by Hippo signaling-regulated coactivators YAP and TAZ. E1A causes YAP/TAZ cytoplasmic sequestration. After eliminating E1A, YAP/TAZ were transported into nuclei, where they associated with poised enhancers with DNA-bound TEAD4 and H3K4me1. This activation of YAP/TAZ required RHO family GTPase signaling and caused histone acetylation by p300/CBP, chromatin remodeling, and cohesin loading to establish MSC-associated enhancers and then superenhancers. Consistent results were also observed in primary rat embryo kidney cells, human fibroblasts, and human respiratory tract epithelial cells. These results together with earlier studies suggest that YAP/TAZ function in a developmental checkpoint controlled by signaling from the actin cytoskeleton that prevents differentiation of a progenitor cell until it is in the correct cellular and tissue environment.
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Affiliation(s)
- Nathan R Zemke
- Molecular Biology Institute, University of California at Los Angeles, Los Angeles, California 90095, USA
| | - Dawei Gou
- Molecular Biology Institute, University of California at Los Angeles, Los Angeles, California 90095, USA
| | - Arnold J Berk
- Molecular Biology Institute, University of California at Los Angeles, Los Angeles, California 90095, USA
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Snigdha K, Gangwani KS, Lapalikar GV, Singh A, Kango-Singh M. Hippo Signaling in Cancer: Lessons From Drosophila Models. Front Cell Dev Biol 2019; 7:85. [PMID: 31231648 PMCID: PMC6558396 DOI: 10.3389/fcell.2019.00085] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 05/03/2019] [Indexed: 12/19/2022] Open
Abstract
Hippo pathway was initially identified through genetic screens for genes regulating organ size in fruitflies. Recent studies have highlighted the role of Hippo signaling as a key regulator of homeostasis, and in tumorigenesis. Hippo pathway is comprised of genes that act as tumor suppressor genes like hippo (hpo) and warts (wts), and oncogenes like yorkie (yki). YAP and TAZ are two related mammalian homologs of Drosophila Yki that act as effectors of the Hippo pathway. Hippo signaling deficiency can cause YAP- or TAZ-dependent oncogene addiction for cancer cells. YAP and TAZ are often activated in human malignant cancers. These transcriptional regulators may initiate tumorigenic changes in solid tumors by inducing cancer stem cells and proliferation, culminating in metastasis and chemo-resistance. Given the complex mechanisms (e.g., of the cancer microenvironment, and the extrinsic and intrinsic cues) that overpower YAP/TAZ inhibition, the molecular roles of the Hippo pathway in tumor growth and progression remain poorly defined. Here we review recent findings from studies in whole animal model organism like Drosophila on the role of Hippo signaling regarding its connection to inflammation, tumor microenvironment, and other oncogenic signaling in cancer growth and progression.
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Affiliation(s)
- Kirti Snigdha
- Department of Biology, University of Dayton, Dayton, OH, United States
| | | | - Gauri Vijay Lapalikar
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, United States
| | - Amit Singh
- Department of Biology, University of Dayton, Dayton, OH, United States.,Pre-Medical Programs, University of Dayton, Dayton, OH, United States.,Center for Tissue Regeneration and Engineering at Dayton, University of Dayton, Dayton, OH, United States.,Integrated Science and Engineering Center, University of Dayton, Dayton, OH, United States
| | - Madhuri Kango-Singh
- Department of Biology, University of Dayton, Dayton, OH, United States.,Pre-Medical Programs, University of Dayton, Dayton, OH, United States.,Center for Tissue Regeneration and Engineering at Dayton, University of Dayton, Dayton, OH, United States.,Integrated Science and Engineering Center, University of Dayton, Dayton, OH, United States
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Tang Z, Ma Q, Wang L, Liu C, Gao H, Yang Z, Liu Z, Zhang H, Ji L, Jiang G. A brief review: some compounds targeting YAP against malignancies. Future Oncol 2019; 15:1535-1543. [PMID: 31066301 DOI: 10.2217/fon-2019-0035] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
YAP, acting as a crucial transcription factor in nucleus, regulates the organ size, tissue homeostasis and tumorigenesis. Dysregulation of Hippo-YAP pathway brings a significant impact on the occurrence and development of various tumor types. Moreover, regulation of YAP/TAZ far exceeds the core kinase of the Hippo pathway, and gradually opens up new therapeutic targets. For the moment, chemotherapy together with radiotherapy act as routine methods to prolong the lives of cancer patients. Seeking more effective anti-neoplastic agents seems to be the urgent problem. This brief review focuses on the research progress of YAP inhibitors as the antineoplastic targets. Small molecule inhibitors or drugs have been discovered including verteporfin, dasatinib, statins, A35, JQ1, norcantharidin, agave, MLN8237, dobutamine and peptide-based YAP inhibitors. We are trying to seek novel therapies from the relationship between known drugs and potential mechanisms.
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Affiliation(s)
- Zhenxue Tang
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, PR China
| | - Qingxia Ma
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, PR China
| | - Luyao Wang
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, PR China
| | - Chaolong Liu
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, PR China
| | - Hui Gao
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, PR China
| | - Zhihong Yang
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, PR China
| | - Zhantao Liu
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, PR China
| | - Huimin Zhang
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, PR China
| | - Lixia Ji
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, PR China
| | - Guohui Jiang
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, PR China
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Su M, Xiao Y, Ma J, Tang Y, Tian B, Zhang Y, Li X, Wu Z, Yang D, Zhou Y, Wang H, Liao Q, Wang W. Circular RNAs in Cancer: emerging functions in hallmarks, stemness, resistance and roles as potential biomarkers. Mol Cancer 2019; 18:90. [PMID: 30999909 PMCID: PMC6471953 DOI: 10.1186/s12943-019-1002-6] [Citation(s) in RCA: 266] [Impact Index Per Article: 53.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 03/13/2019] [Indexed: 02/06/2023] Open
Abstract
Circular RNAs (circRNAs) are a class of RNA molecules with closed loops and high stability. CircRNAs are abundantly expressed in eukaryotic organisms and exhibit both location- and step-specificity. In recent years, circRNAs are attracting considerable research attention attributed to their possible contributions to gene regulation through a variety of actions, including sponging microRNAs, interacting with RNA-binding proteins, regulating transcription and splicing, and protein translation. Growing evidence has revealed that circRNAs play critical roles in the development and progression of diseases, especially in cancers. Without doubt, expanding our understanding of circRNAs will enrich knowledge of cancer and provide new opportunities for cancer therapy. In this review, we provide an overview of the characteristics, functions and functional mechanisms of circRNAs. In particular, we summarize current knowledge regarding the functions of circRNAs in the hallmarks, stemness, resistance of cancer, as well as the possibility of circRNAs as biomarkers in cancer.
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Affiliation(s)
- Min Su
- Department of the 2nd Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, People's Republic of China.,Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,Department of the Central Laboratory, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, People's Republic of China
| | - Yuhang Xiao
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,Department of Pharmacy, Xiangya Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410001, People's Republic of China
| | - Junliang Ma
- Department of the 2nd Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, People's Republic of China
| | - Yanyan Tang
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Bo Tian
- Department of the 2nd Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, People's Republic of China
| | - Yuqin Zhang
- Department of Pharmacy, Xiangya Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410001, People's Republic of China
| | - Xu Li
- Department of the 2nd Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, People's Republic of China
| | - Zhining Wu
- Department of the 2nd Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, People's Republic of China
| | - Desong Yang
- Department of the 2nd Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, People's Republic of China
| | - Yong Zhou
- Department of the 2nd Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, People's Republic of China
| | - Hui Wang
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Qianjin Liao
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China. .,Department of the Central Laboratory, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, People's Republic of China.
| | - Wenxiang Wang
- Department of the 2nd Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, People's Republic of China. .,Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.
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Li Y, Wang S, Wei X, Zhang S, Song Z, Chen X, Zhang J. Role of inhibitor of yes-associated protein 1 in triple-negative breast cancer with taxol-based chemoresistance. Cancer Sci 2019; 110:561-567. [PMID: 30467925 PMCID: PMC6361558 DOI: 10.1111/cas.13888] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 11/17/2018] [Accepted: 11/20/2018] [Indexed: 12/11/2022] Open
Abstract
Triple‐negative breast cancer (TNBC) is highly clinically aggressive and taxol‐based chemoresistance remains a big TNBC therapeutic problem to be solved. Verteporfin, a small molecular yes‐associated protein 1 (YAP1) inhibitor, is little known as an antitumor drug for TNBC. Our data showed that YAP1 expression was associated with early relapse in tissue samples of patients with TNBC taxol chemoresistance (P < .001). Verteporfin reduced migration and enhanced apoptosis or autophagy of a taxol‐resistant MDA‐MB‐231 cell line in vitro. Knockdown of YAP1 increased epithelial‐mesenchymal transition response in a taxol‐resistant TNBC cell line. In an in vivo experiment, we found that verteporfin was able to shrink tumor weight and volume and decreased Ki67 expression in a taxol‐resistant mouse model. Our results provide evidence that verteporfin could be a chemosensitizer for TNBC patients with taxol‐based treatment.
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Affiliation(s)
- Ying Li
- The Third Surgical Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Breast Cancer Prevention and Therapy of Ministry of Education, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Shunan Wang
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, China
| | - Xi Wei
- Department of Diagnostic and Therapeutic Ultrasonography, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Sheng Zhang
- The Third Surgical Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Breast Cancer Prevention and Therapy of Ministry of Education, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Zian Song
- The Third Surgical Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Breast Cancer Prevention and Therapy of Ministry of Education, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Xiao Chen
- The Third Surgical Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Breast Cancer Prevention and Therapy of Ministry of Education, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Jin Zhang
- The Third Surgical Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Breast Cancer Prevention and Therapy of Ministry of Education, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
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35
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Zhang Q, Fang X, Zhao W, Liang Q. The transcriptional coactivator YAP1 is overexpressed in osteoarthritis and promotes its progression by interacting with Beclin-1. Gene 2018; 689:210-219. [PMID: 30496783 DOI: 10.1016/j.gene.2018.11.068] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/17/2018] [Accepted: 11/20/2018] [Indexed: 01/06/2023]
Abstract
Osteoarthritis (OA) constitutes the most common disease of degenerative joints, with chondrocytes playing an important role in disease progression. However, the underlying pathobiological mechanisms have not been fully characterized. In this study, we investigated the role of Yes-associated protein 1 (YAP1)-regulated autophagy in chondrocyte proliferation, apoptosis, and differentiation. The data showed that YAP1, a transcriptional coactivator, was overexpressed in OA tissues from a murine model of OA, as analyzed by real time PCR and western blot. Overexpression of YAP1 significantly suppressed ATDC5 chondrogenic cell proliferation and decreased the expression of differentiation-related genes including Runx2, osteocalcin, and collagen I, and elevated cell apoptosis, whereas these cellular processes were reversed by knockdown of YAP1. Immunofluorescence analysis demonstrated that YAP1 co-localized with the autophagy regulator beclin1. Co-immunoprecipitation experiments indicated that this interaction was enhanced in OA tissues. In contrast, YAP1 lacking the internal WW domains failed to interact with beclin1 and was unable to inhibit beclin1 ubiquitination. This resulted in upregulated autophagy, which significantly improved OA by increasing chondrocyte proliferation and differentiation. Notably, YAP1 expression was significantly downregulated by various anti-OA drugs. Finally, the Yap1 promoter was activated by transcriptional factors AP2α and SP1, whereas its 3'UTR was targeted by miR-5624-5p, miR-33-3p, and miR-6918-5p. In conclusion, inhibition of YAP1 could facilitate beclin1-regulated autophagy in OA, suggesting a potential therapeutic approach to combat OA.
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Affiliation(s)
- Qiang Zhang
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, Liaoning 110000, PR China; Department of Orthopedics, Benxi Central Hospital of China Medical University, Benxi, Liaoning, PR China
| | - Xin Fang
- Department of Orthopedics, Benxi Central Hospital of China Medical University, Benxi, Liaoning, PR China
| | - Wei Zhao
- Department of Clinical Biochemistry, School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan, PR China
| | - Qingwei Liang
- Department of Sports Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, PR China.
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Kim HB, Myung SJ. Clinical implications of the Hippo-YAP pathway in multiple cancer contexts. BMB Rep 2018; 51:119-125. [PMID: 29366445 PMCID: PMC5882218 DOI: 10.5483/bmbrep.2018.51.3.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Indexed: 12/22/2022] Open
Abstract
The Hippo pathway plays prominent and widespread roles in various forms of human carcinogenesis. Specifically, the Yes-associated protein (YAP), a downstream effector of the Hippo pathway, can lead to excessive cell proliferation and the inhibition of apoptosis, resulting in tumorigenesis. It was reported that the YAP is strongly elevated in multiple types of human malignancies such as breast, lung, small intestine, colon, and liver cancers. Recent work indicates that, surprisingly, Hippo signaling components' (SAV1, MST1/2, Lats1/2) mutations are virtually absent in human cancer, rendering this signaling an unlikely candidate to explain the vigorous activation of the YAP in most, if not all human tumors and an activated YAP promotes the resistance to RAF-, MAPK/ERK Kinase (MEK)-, and Epidermal growth factor receptor (EGFR)-targeted inhibitor therapy. The analysis of YAP expressions can facilitate the identification of patients who respond better to an anti-cancer drug treatment comprising RAF-, MEK-, and EGFR-targeted inhibitors. The prominence of YAP for those aspects of cancer biology denotes that these factors are ideal targets for the development of anti-cancer medications. Therefore, our report strongly indicates that the YAP is of potential prognostic utility and druggability in various human cancers. [BMB Reports 2018; 51(3): 119-125].
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Affiliation(s)
- Han-Byul Kim
- LG Chem, Department of Life Sciences, R&D Park, Seoul 07796, Korea
| | - Seung-Jae Myung
- Biomedical Research Center, Asan Institute for Life Sciences, Seoul 05505; Department of Gastroenterology and Convergence Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
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Zhu JY, Lin S, Ye J. YAP and TAZ, the conductors that orchestrate eye development, homeostasis, and disease. J Cell Physiol 2018; 234:246-258. [PMID: 30094836 DOI: 10.1002/jcp.26870] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/08/2018] [Accepted: 05/18/2018] [Indexed: 12/25/2022]
Abstract
Yes-associated protein (YAP) and transcriptional coactivator with PDZ-binding motif (TAZ) are transcriptional coactivators established as a nexus in numerous signaling pathways, notably in Hippo signaling. Previous research revealed multifarious function of YAP and TAZ in oncology and cardiovasology. Recently, the focus has been laid on their pivotal role in eye morphogenesis and homeostasis. In this review, we synthesize advances of YAP and TAZ function during eye development in different model organisms, introduce their function in different ocular tissues and eye diseases, and highlight the potential for therapeutic interventions.
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Affiliation(s)
- Jing-Yi Zhu
- Department of Ophthalmology and Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, China
| | - Sen Lin
- Department of Ophthalmology and Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, China
| | - Jian Ye
- Department of Ophthalmology and Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, China
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Liu Z, Huang S, Cao Y, Yao Y, Li J, Chen J, Jiang B, Yuan X, Xiang X, Xiong J, Deng J. YAP1 inhibits circRNA-000425 expression and thus promotes oncogenic activities of miR-17 and miR-106. Biochem Biophys Res Commun 2018; 503:2370-2375. [PMID: 30017188 DOI: 10.1016/j.bbrc.2018.06.163] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 06/28/2018] [Indexed: 01/04/2023]
Abstract
YAP1, a vital effector of Hippo pathway, promotes cancer development via transcriptionally regulating a batch of target genes involved in various signaling pathways, including proliferation, apoptosis, and cell drug sensitivity. Recently, circular RNAs (circRNAs) have been shown to control gene expression post-transcriptionally and become a new layer of gene regulation. However, whether circRNAs play roles in YAP1-induced tumorigenesis is still largely elusive. Here, we identify circRNA-000425 as a new inhibitory target of YAP1, and also find that it binds to miR-17/miR-106b, and thus suppresses cancer cell growth induced by these miRNAs. circRNA-000425 is revealed as a YAP1 target through circRNA microarray analysis of RNAs extracted from cells treated with or without YAP1 siRNAs, and further confirmed by RT-q-PCR and ChIP assays. Interestingly, bioinformatics analysis, luciferase assay, and RT-q-PCR results showed that circRNA-000425 binds to miR-17 and miR-106b, but not let-7a, and rescues the inhibitory effect of miR-17/miR-106 on the expressions of both p21 and BIM. In addition, colony formation and MTT assay showed that circRNA-000425 inhibits cancer cell growth induced by miR-17. These findings reveal a mechanism by which YAP1 promotes oncogenic activities of miR-17 and miR-106b through transcriptionally inhibiting circRNA-000425 expression.
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Affiliation(s)
- Zhen Liu
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China
| | - Shanshan Huang
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China
| | - Yuan Cao
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China
| | - Yangyang Yao
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China
| | - Junhe Li
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China
| | - Jun Chen
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China
| | - Bailing Jiang
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China
| | - Xiang Yuan
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China
| | - Xiaojun Xiang
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China.
| | - Jianping Xiong
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China.
| | - Jun Deng
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, 330006, China.
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Propofol Protects Hippocampal Neurons from Hypoxia-Reoxygenation Injury by Decreasing Calcineurin-Induced Calcium Overload and Activating YAP Signaling. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:1725191. [PMID: 30046369 PMCID: PMC6038584 DOI: 10.1155/2018/1725191] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 05/09/2018] [Indexed: 01/03/2023]
Abstract
Objectives Propofol is a popular anesthetic drug that is neuroprotective. However, the mechanisms of propofol for hippocampal neuroprotection remain elusive. This study is aimed at investigating the neuroprotective effect and mechanism of propofol in hippocampal neurons exposed to ischemia-reperfusion (I/R) injury. Methods Hypoxia-reoxygenated (H/R) HT-22 cells were used to mimic I/R injury of the hippocampus in vitro. An MTT assay was used to determine cell viability. Cell apoptosis was detected by a TUNEL assay and a flow cytometry cell apoptosis assay. Expression levels of proteins were measured by Western blotting. Intracellular calcium was assessed by Fura-2/AM staining. Flow cytometry was used to determine the mitochondrial membrane potential (MMP). Coimmunoprecipitation was used to evaluate the stability of the FKBP-RyR complex. Calcineurin enzymatic activity was measured with a colorimetric method. YAP nuclear translocation was tested by immunofluorescence staining. Results H/R induced HT-22 cell viability depression, and apoptosis was reversed by propofol treatment. Propofol could alleviate H/R-induced intracellular calcium accumulation and MMP loss by inhibiting calcineurin activity and FKBP12.6-RyR disassociation in a concentration-dependent manner. In addition, YAP expression was crucial for propofol to protect HT-22 cell apoptosis from H/R injury. Propofol could activate YAP through dephosphorylation. Activated YAP stimulated the transcription of the Bcl2 gene, which promotes cellular survival. Our data also demonstrated that propofol activated YAP through the RhoA-Lats1 pathway without large G proteins or MST involvement. In addition, we showed that there was no interaction between calcineurin signaling and YAP activation in HT-22 cells. Conclusions Propofol protected hippocampal neurons from I/R injury through two independent signaling pathways, including the calcineurin/FKBP12.6-RyR/calcium overload pathway and the RhoA/Lats1/YAP/Bcl-2 pathway.
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Zhou JX, Liu YJ, Chen X, Zhang X, Xu J, Yang K, Wang D, Lin S, Ye J. Low-Intensity Pulsed Ultrasound Protects Retinal Ganglion Cell From Optic Nerve Injury Induced Apoptosis via Yes Associated Protein. Front Cell Neurosci 2018; 12:160. [PMID: 29950973 PMCID: PMC6008403 DOI: 10.3389/fncel.2018.00160] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/25/2018] [Indexed: 01/08/2023] Open
Abstract
Background: Low-intensity pulsed ultrasound (LIPUS) has been used in clinical studies. But little is known about its effects on the central nervous system (CNS), or its mechanism of action. Retinal ganglion cells (RGCs) are CNS neuronal cells that can be utilized as a classic model system to evaluate outcomes of LIPUS protection from external trauma-induced retinal injury. In this study, we aim to: (1) determine the pulse energy and the capability of LIPUS in RGC viability, (2) ascertain the protective role of LIPUS in optic nerve (ON) crush-induced retinal injury, and 3) explore the cellular mechanisms of RGC apoptosis prevention by LIPUS. Methods: An ON crush model was set up to induce RGC death. LIPUS was used to treat mice eyes daily, and the retina samples were dissected for immunostaining and Western blot. The expression of yes-associated protein (YAP) and apoptosis-related proteins was detected by immunostaining and Western blot in vitro and in vivo. Apoptosis of RGCs was evaluated by TUNEL staining, the survival of RGCs and retained axons were labeled by Fluoro-gold and Tuj1 antibody, respectively. Rotenone was used to set up an in vitro cellular degenerative model and siYAP was used to interfering the expression of YAP to detect the LIPUS protective function. Results: LIPUS protected RGC from loss and apoptosis in vivo and in vitro. The ratio of cleaved/pro-caspase3 also decreased significantly under LIPUS treatment. As a cellular mechanical sensor, YAP expression increased and YAP translocated to nucleus in LIPUS stimulation group, however, phospho-YAP was found to be decreased. When YAP was inhibited, the LIPUS could not protect RGC from caspase3-dependent apoptosis. Conclusion: LIPUS prevented RGCs from apoptosis in an ON crush model and in vitro cellular degenerative model, which indicates a potential treatment for further traumatic ON injury. The mechanism of protection is dependent on YAP activation and correlated with caspase-3 signaling.
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Affiliation(s)
- Jia-Xing Zhou
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Yun-Jia Liu
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Xi Chen
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Xi Zhang
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Jie Xu
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Ke Yang
- Chongqing Engineering Technical Center Stem Cell Therapy, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Dong Wang
- Department of Ultrasound, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Ultrasound Molecular Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Sen Lin
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Jian Ye
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
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41
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Lee M, Goraya N, Kim S, Cho SH. Hippo-yap signaling in ocular development and disease. Dev Dyn 2018; 247:794-806. [PMID: 29532607 PMCID: PMC5980750 DOI: 10.1002/dvdy.24628] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/01/2018] [Accepted: 03/02/2018] [Indexed: 12/17/2022] Open
Abstract
The Hippo-Yes associated protein (Yap) pathway plays an important role in organ size control by regulating cell proliferation, apoptosis, and stem cell renewal. Hippo-Yap signaling also functions at the level of cellular development in a variety of organs through its effects on cell cycle control, cell survival, cell polarity, and cell fate. Because of its important roles in normal development and homeostasis, abnormal regulation of this pathway has been shown to lead to pathological outcomes such as tissue overgrowth, tumor formation, and abnormal organogenesis, including ocular-specific disorders. In this review, we summarize how normal and perturbed control of Yap signaling is implicated in ocular development and disease Developmental Dynamics 247:794-806, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Matthew Lee
- Temple University Lewis Katz School of Medicine, Temple University Lewis Katz School of Medicine 3500 N. Broad Street, Philadelphia, PA 19140
| | - Navneet Goraya
- Temple University Lewis Katz School of Medicine, Temple University Lewis Katz School of Medicine 3500 N. Broad Street, Philadelphia, PA 19140
| | - Seonhee Kim
- Shriners Hospitals Pediatric Research Center and Department of Anatomy and Cell Biology, Temple University Lewis Katz School of Medicine 3500 N. Broad Street, Philadelphia, PA 19140
| | - Seo-Hee Cho
- Shriners Hospitals Pediatric Research Center and Department of Anatomy and Cell Biology, Temple University Lewis Katz School of Medicine 3500 N. Broad Street, Philadelphia, PA 19140
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42
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Lv Y, Kim K, Sheng Y, Cho J, Qian Z, Zhao YY, Hu G, Pan D, Malik AB, Hu G. YAP Controls Endothelial Activation and Vascular Inflammation Through TRAF6. Circ Res 2018; 123:43-56. [PMID: 29794022 DOI: 10.1161/circresaha.118.313143] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 05/16/2018] [Accepted: 05/21/2018] [Indexed: 01/05/2023]
Abstract
RATIONALE Microvascular inflammation and endothelial dysfunction secondary to unchecked activation of endothelium play a critical role in the pathophysiology of sepsis and organ failure. The intrinsic signaling mechanisms responsible for dampening excessive activation of endothelial cells are not completely understood. OBJECTIVE To determine the central role of YAP (Yes-associated protein), the major transcriptional coactivator of the Hippo pathway, in modulating the strength and magnitude of endothelial activation and vascular inflammation. METHODS AND RESULTS Endothelial-specific YAP knockout mice showed increased basal expression of E-selectin and ICAM (intercellular adhesion molecule)-1 in endothelial cells, a greater number of adherent neutrophils in postcapillary venules and increased neutrophil counts in bronchoalveolar lavage fluid. Lipopolysaccharide challenge of these mice augmented NF-κB (nuclear factor-κB) activation, expression of endothelial adhesion proteins, neutrophil and monocyte adhesion to cremaster muscle venules, transendothelial neutrophil migration, and lung inflammatory injury. Deletion of YAP in endothelial cells also markedly augmented the inflammatory response and cardiovascular dysfunction in a polymicrobial sepsis model induced by cecal ligation and puncture. YAP functioned by interacting with the E3 ubiquitin-protein ligase TLR (Toll-like receptor) signaling adaptor TRAF6 (tumor necrosis factor receptor-associated factor 6) to ubiquitinate TRAF6, and thus promoted TRAF6 degradation and modification resulting in inhibition of NF-κB activation. TRAF6 depletion in endothelial cells rescued the augmented inflammatory phenotype in mice with endothelial cell-specific deletion of YAP. CONCLUSIONS YAP modulates the activation of endothelial cells and suppresses vascular inflammation through preventing TRAF6-mediated NF-κB activation and is hence essential for limiting the severity of sepsis-induced inflammation and organ failure.
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Affiliation(s)
- Yang Lv
- From the Department of Anesthesiology (Y.L., Guochang Hu).,University of Illinois College of Medicine, Chicago; Department of Pharmacology, Nanjing Medical University, Jiangsu, China (Y.L., Gang Hu)
| | - Kyungho Kim
- Department of Pharmacology (K.K., J.C., A.B.M., Guochang Hu)
| | - Yue Sheng
- Department of Medicine and Cancer Research Center, The University of Illinois Hospital and Health Sciences System, Chicago (Y.S., Z.Q.)
| | - Jaehyung Cho
- Department of Pharmacology (K.K., J.C., A.B.M., Guochang Hu)
| | - Zhijian Qian
- Department of Medicine and Cancer Research Center, The University of Illinois Hospital and Health Sciences System, Chicago (Y.S., Z.Q.)
| | - You-Yang Zhao
- Program for Lung and Vascular Biology, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, IL (Y.-Y.Z.).,Program for Lung and Vascular Biology, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, IL (Y.-Y.Z.).,Departments of Pediatrics and Pharmacology, Northwestern University Feinberg School of Medicine, Chicago, IL (Y.-Y.Z.)
| | - Gang Hu
- University of Illinois College of Medicine, Chicago; Department of Pharmacology, Nanjing Medical University, Jiangsu, China (Y.L., Gang Hu)
| | - Duojia Pan
- Howard Hughes Medical Institute and Department of Physiology, UT Southwestern Medical Center, Dallas, TX (D.P.)
| | - Asrar B Malik
- Department of Pharmacology (K.K., J.C., A.B.M., Guochang Hu)
| | - Guochang Hu
- From the Department of Anesthesiology (Y.L., Guochang Hu) .,Department of Pharmacology (K.K., J.C., A.B.M., Guochang Hu)
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43
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Gopinath M, Di Liddo R, Marotta F, Murugesan R, Banerjee A, Sriramulu S, Jothimani G, Subramaniam VD, Narasimhan S, Priya K S, Sun XF, Pathak S. Role of Hippo Pathway Effector Tafazzin Protein in Maintaining Stemness of Umbilical Cord-Derived Mesenchymal Stem Cells (UC-MSC). Int J Hematol Oncol Stem Cell Res 2018; 12:153-165. [PMID: 30233778 PMCID: PMC6141435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 07/24/2017] [Indexed: 11/22/2022] Open
Abstract
Tafazzin (TAZ) protein has been upregulated in various types of human cancers, although the basis for elevation is uncertain, it has been made definite that the effect of mutation in the hippo pathway, particularly when it is switched off, considerably activates tafazzin transcriptionally and thus this results in tissue or tumor overgrowth. Recent perceptions into the activity of tafazzin, have ascribed to it, a role as stem cell factor in mouse mesenchymal and as well as in neural stem cells. Being a downstream molecule in Hippo signalling, phosphorylation or dephosphorylation of tafazzin gene regulates its transcriptional activity and the stemness of mesenchymal stem cells. Commonly, extracellular matrix controls the stem cell fate commitment and perhaps tafazzin controls stemness through altering the extra cellular matrix. Extracellular matrix is generally made up of prime proteoglycans and the fate stabilization of the resulting lineages is surveilled by engineering these glycans. Tafazzin degradation and addition of proteoglycans affect physical attributes of the extracellular matrix that drives cell differentiation into various lineages. Thus, tafazzin along with major glycans present in the extracellular matrix is involved in imparting stemness. However, there are incoherent molecular events, wherein both tafazzin and the extracellular matrix components, together either activate or inhibit differentiation of stem cells. This review discusses about the role of tafazzin oncoprotein as a stemness factor.
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Affiliation(s)
- Madhumala Gopinath
- Department of Allied Health Sciences, Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai-603103, India
| | - Rosa Di Liddo
- Department of Pharmacology and Pharmaceutical Sciences, University of Padova, Padova, Italy
| | - Francesco Marotta
- ReGenera R&D International for Aging Intervention, Milano-Beijing, Italy-China, VCC Preventive Medical Promotion Foundation, Beijing, China
| | - Ramachandran Murugesan
- Department of Allied Health Sciences, Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai-603103, India
| | - Antara Banerjee
- Department of Allied Health Sciences, Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai-603103, India
| | - Sushmitha Sriramulu
- Department of Allied Health Sciences, Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai-603103, India
| | - Ganesan Jothimani
- Department of Allied Health Sciences, Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai-603103, India
| | - Vimala Devi Subramaniam
- Department of Allied Health Sciences, Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai-603103, India
| | - Srinivasan Narasimhan
- Department of Allied Health Sciences, Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai-603103, India
| | - Swarna Priya K
- Department of Gynecology and Pediatrics, Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai-603103, India
| | - Xiao-Feng Sun
- Department of Oncology and Department of Clinical and Experimental Medicine, University of Linköping, Linköping, Sweden
| | - Surajit Pathak
- Department of Allied Health Sciences, Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai-603103, India
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44
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Tang C, Takahashi-Kanemitsu A, Kikuchi I, Ben C, Hatakeyama M. Transcriptional Co-activator Functions of YAP and TAZ Are Inversely Regulated by Tyrosine Phosphorylation Status of Parafibromin. iScience 2018; 1:1-15. [PMID: 30227954 PMCID: PMC6135933 DOI: 10.1016/j.isci.2018.01.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 01/09/2018] [Accepted: 01/23/2018] [Indexed: 01/27/2023] Open
Abstract
YAP and TAZ, the Hippo signal-regulated transcriptional co-activators, play crucial roles in morphogenesis and organogenesis. Here we report that the YAP/TAZ activities are stimulated upon complex formation with Parafibromin, which undergoes tyrosine phosphorylation and dephosphorylation by kinases such as PTK6 and phosphatases such as SHP2, respectively. Furthermore, TAZ and the Wnt effector β-catenin interact cooperatively with tyrosine-dephosphorylated Parafibromin, which synergistically stimulates the co-activator functions of TAZ and β-catenin. On the other hand, YAP is selectively activated through binding with tyrosine-phosphorylated Parafibromin, which does not interact with β-catenin and thus cannot co-activate YAP and β-catenin. These findings indicate that Parafibromin inversely regulates the activities of YAP and TAZ depending on its tyrosine phosphorylation status. They also suggest that YAP and TAZ exert their redundant and non-redundant biological actions through mutually exclusive interaction with Parafibromin, which is regulated by a balance of kinase and phosphatase activities toward Parafibromin. YAP and TAZ co-activators bind to the nuclear tyrosine phosphoprotein Parafibromin TAZ is functionally activated through binding with dephosphorylated Parafibromin YAP activity is stimulated upon binding with tyrosine-phosphorylated Parafibromin Dephosphorylated Parafibromin co-stimulates TAZ and β-catenin via complex formation
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Affiliation(s)
- Chao Tang
- Division of Microbiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | | | - Ippei Kikuchi
- Division of Microbiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Chi Ben
- Division of Microbiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Masanori Hatakeyama
- Division of Microbiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan.
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45
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Yang R, Wu Y, Zou J, Zhou J, Wang M, Hao X, Cui H. The Hippo transducer TAZ promotes cell proliferation and tumor formation of glioblastoma cells through EGFR pathway. Oncotarget 2017; 7:36255-36265. [PMID: 27167112 PMCID: PMC5094998 DOI: 10.18632/oncotarget.9199] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 04/16/2016] [Indexed: 02/06/2023] Open
Abstract
TAZ, a WW-domain-containing transcriptional co-activator, is important for development of various tissues in mammals. Recently, TAZ has been found to be overexpressed in some types of human cancers. However, the role of TAZ in glioblastoma remains unclear. In this study, we found that TAZ was overexpressed in prognostically poor glioblastoma patients. Through knocking down or overexpressing TAZ in U87 and LN229 cells, the expression level of TAZ was found to be positively related to cell proliferation in vitro and tumor formation in vivo. Further investigation indicated that TAZ could significantly promote the acceleration of cell cycle. Moreover, the western blot for p-EGFR, p-AKT, p-ERK1/2, p21, cyclin E and CDK2 proteins, target genes of the EGFR pathway, indicated that TAZ significantly activated EGFR/AKT/ERK signaling. Additionally, the blockage of EGFR pathway resulted in a significantly inhibition of cell proliferation induced by TAZ. Taken together, these results demonstrate that TAZ can promote proliferation and tumor formation in glioblastoma cells by potentiating the EGFR/AKT/ERK pathway, and provide the evidence for promising target for the treatment of glioblastoma.
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Affiliation(s)
- Rui Yang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Yanan Wu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Jiahua Zou
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Ji Zhou
- Department of Neurosurgery, Second Artillery General Hospital, Chinese People's Liberation Army, Beijing 100088, China
| | - Mei Wang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Xiangwei Hao
- Chongqing Reproductive and Genentics Institute, Chongqing Obstetrics and Gynecology Hospital, Chongqing 400013, China
| | - Hongjuan Cui
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
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46
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Pathak S, Banerjee A, Meng WJ, Kumar Nandy S, Gopinath M, Sun XF. Significant expression of tafazzin (TAZ) protein in colon cancer cells and its downregulation by radiation. Int J Radiat Biol 2017; 94:79-87. [PMID: 29099643 DOI: 10.1080/09553002.2018.1400191] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Surajit Pathak
- Department of Oncology and Department of Clinical and Experimental Medicine, University of Linköping, Linköping, Sweden
- Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai, India
| | - Antara Banerjee
- Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai, India
| | - Wen-Jian Meng
- Department of Oncology and Department of Clinical and Experimental Medicine, University of Linköping, Linköping, Sweden
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Suman Kumar Nandy
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, India
- Bioinformatics Centre, Department of RDAP, North-Eastern Hill University, Tura Campus, Tura, India
| | - Madhumala Gopinath
- Chettinad Hospital & Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai, India
| | - Xiao-Feng Sun
- Department of Oncology and Department of Clinical and Experimental Medicine, University of Linköping, Linköping, Sweden
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47
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Zhang W, Dai Y, Hsu P, Wang H, Cheng L, Yang Y, Wang Y, Xu Z, Liu S, Chan G, Hu B, Li H, Jablons DM, You L. Targeting YAP in malignant pleural mesothelioma. J Cell Mol Med 2017; 21:2663-2676. [PMID: 28470935 PMCID: PMC5661117 DOI: 10.1111/jcmm.13182] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 03/04/2017] [Indexed: 12/28/2022] Open
Abstract
Malignant mesothelioma is an aggressive cancer that is resistant to current therapy. The poor prognosis of mesothelioma has been associated with elevated Yes-associated protein (YAP) activity. In this study, we evaluated the effect of targeting YAP in mesothelioma. First, we comprehensively studied YAP activity in five mesothelioma cell lines (211H, H2052, H290, MS-1 and H2452) and one normal mesothelial cell line (LP9). We found decreased phospho-YAP to YAP protein ratio and consistently increased GTIIC reporter activity in 211H, H2052 and H290 compared to LP9. The same three cell lines (IC50 s < 1 μM) were more sensitive than LP9 (IC50 = 3.5 μM) to the YAP/TEAD inhibitor verteporfin. We also found that verteporfin significantly reduced YAP protein level, mRNA levels of YAP downstream genes and GTIIC reporter activity in the same three cell lines, indicating inhibition of YAP signaling by verteporfin. Verteporfin also impaired invasion and tumoursphere formation ability of H2052 and H290. To validate the effect of specific targeting YAP in mesothelioma cells, we down-regulated YAP by siRNA. We found siYAP significantly decreased YAP transcriptional activity and impaired invasion and tumoursphere formation ability of H2052 and H290. Furthermore, forced overexpression of YAP rescued GTIIC reporter activity and cell viability after siYAP targeting 3'UTR of YAP. Finally, we found concurrent immunohistochemistry staining of ROCK2 and YAP (P < 0.05). Inhibition of ROCK2 decreased GTIIC reporter activity in H2052 and 211H suggesting that Rho/ROCK signaling also contributed to YAP activation in mesothelioma cells. Our results indicate that YAP may be a potential therapeutic target in mesothelioma.
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MESH Headings
- 3' Untranslated Regions
- Adaptor Proteins, Signal Transducing/antagonists & inhibitors
- Adaptor Proteins, Signal Transducing/genetics
- Adaptor Proteins, Signal Transducing/metabolism
- Antineoplastic Agents/pharmacology
- Cell Line, Tumor
- DNA-Binding Proteins/antagonists & inhibitors
- DNA-Binding Proteins/genetics
- DNA-Binding Proteins/metabolism
- Epithelial Cells/drug effects
- Epithelial Cells/metabolism
- Epithelial Cells/pathology
- Gene Expression Regulation, Neoplastic
- Genes, Reporter
- Humans
- Lung Neoplasms/genetics
- Lung Neoplasms/metabolism
- Lung Neoplasms/pathology
- Mesothelioma/genetics
- Mesothelioma/metabolism
- Mesothelioma/pathology
- Mesothelioma, Malignant
- Nuclear Proteins/antagonists & inhibitors
- Nuclear Proteins/genetics
- Nuclear Proteins/metabolism
- Phosphoproteins/antagonists & inhibitors
- Phosphoproteins/genetics
- Phosphoproteins/metabolism
- Phosphorylation
- Porphyrins/pharmacology
- Prognosis
- RNA, Messenger/antagonists & inhibitors
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Small Interfering/genetics
- RNA, Small Interfering/metabolism
- Signal Transduction
- Spheroids, Cellular/drug effects
- Spheroids, Cellular/metabolism
- Spheroids, Cellular/pathology
- TEA Domain Transcription Factors
- Transcription Factors/antagonists & inhibitors
- Transcription Factors/genetics
- Transcription Factors/metabolism
- Verteporfin
- YAP-Signaling Proteins
- rho-Associated Kinases/genetics
- rho-Associated Kinases/metabolism
- rhoA GTP-Binding Protein/genetics
- rhoA GTP-Binding Protein/metabolism
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Affiliation(s)
- Wen‐Qian Zhang
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
- Department of Thoracic SurgeryBeijing Chao‐Yang HospitalAffiliated with Capital University of Medical ScienceBeijingChina
| | - Yu‐Yuan Dai
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Ping‐Chih Hsu
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
- Department of Thoracic MedicineChang Gung Memorial HospitalLinkou, TaoyuanTaiwan
| | - Hui Wang
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
- Department of RespirationThe Second Hospital of Shandong UniversityJinanChina
| | - Li Cheng
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
- Department of GastroenterologyShanghai General HospitalShang Jiao Tong UniversityShanghaiChina
| | - Yi‐Lin Yang
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Yu‐Cheng Wang
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Zhi‐Dong Xu
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Shu Liu
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Geraldine Chan
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Bin Hu
- Department of Thoracic SurgeryBeijing Chao‐Yang HospitalAffiliated with Capital University of Medical ScienceBeijingChina
| | - Hui Li
- Department of Thoracic SurgeryBeijing Chao‐Yang HospitalAffiliated with Capital University of Medical ScienceBeijingChina
| | - David M. Jablons
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
| | - Liang You
- Thoracic Oncology LaboratoryDepartment of Surgery, Comprehensive Cancer CenterUniversity of CaliforniaSan FranciscoCAUSA
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48
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Peng J, Wang H, Wang X, Sun M, Deng S, Wang Y. YAP and TAZ mediate steroid-induced alterations in the trabecular meshwork cytoskeleton in human trabecular meshwork cells. Int J Mol Med 2017; 41:164-172. [PMID: 29115373 PMCID: PMC5746292 DOI: 10.3892/ijmm.2017.3207] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 09/28/2017] [Indexed: 12/20/2022] Open
Abstract
Primary open angle glaucoma is an important type of glaucoma as it is one of the most common causes of blindness. Previous studies have demonstrated that in glaucomatous patients, the human trabecular meshwork (HTM) is markedly stiffened. The purpose of the present study was to determine the regulatory role of Yes-associated protein (YAP) and transcriptional coactivator with PDZ-binding motif (TAZ) in HTM cells. Primary HTM cells were cultured with different concentrations of dexamethasone (DEX), and the expression levels of YAP and TAZ were evaluated using reverse transcription-quantitative polymerase chain reaction and western blotting. The results revealed that DEX increased the expression of YAP and TAZ in a dose-dependent manner. In addition, the western blot analysis of cytoskeleton-associated proteins revealed that the inhibition of YAP and/or TAZ using small interfering RNA resulted in the increased expression of collagen I, and decreased expression of fibronectin, laminin and collagen IV. The expression of β-catenin, a key protein in the Wnt pathway, was also observed to be regulated by YAP and TAZ. A 5-ethynyl-2′-deoxyuridine staining assay indicated that YAP and TAZ induced the proliferation of HTM cells. The investigation of cross-linked actin network formation by the HTM cells demonstrated that the knockdown of YAP and TAZ genes rescued HTM cells from cytoskeletal reorganization. Furthermore, functional evaluation of a HTM cell monolayer using a permeability assay demonstrated that the inhibition of YAP and TAZ attenuated the DEX-induced impairment of permeability. These findings suggest that YAP and TAZ play pivotal roles in the DEX-induced cytoskeletal changes of HTM cells, and reveal novel potential mechanisms for the development and progression of glaucoma.
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Affiliation(s)
- Jie Peng
- Department of Ophthalmology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Hailian Wang
- Institute of Organ Transplantation, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Xin Wang
- Department of Biomedical Engineering, Medical School of the University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
| | - Minghan Sun
- Department of Gynecology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Shaoping Deng
- Institute of Organ Transplantation, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Yi Wang
- Department of Biomedical Engineering, Medical School of the University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
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Maruyama J, Inami K, Michishita F, Jiang X, Iwasa H, Nakagawa K, Ishigami-Yuasa M, Kagechika H, Miyamura N, Hirayama J, Nishina H, Nogawa D, Yamamoto K, Hata Y. Novel YAP1 Activator, Identified by Transcription-Based Functional Screen, Limits Multiple Myeloma Growth. Mol Cancer Res 2017; 16:197-211. [DOI: 10.1158/1541-7786.mcr-17-0382] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 09/20/2017] [Accepted: 10/10/2017] [Indexed: 11/16/2022]
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Meliambro K, Wong JS, Ray J, Calizo RC, Towne S, Cole B, El Salem F, Gordon RE, Kaufman L, He JC, Azeloglu EU, Campbell KN. The Hippo pathway regulator KIBRA promotes podocyte injury by inhibiting YAP signaling and disrupting actin cytoskeletal dynamics. J Biol Chem 2017; 292:21137-21148. [PMID: 28982981 DOI: 10.1074/jbc.m117.819029] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Indexed: 11/06/2022] Open
Abstract
Kidney podocytes represent a key constituent of the glomerular filtration barrier. Identifying the molecular mechanisms of podocyte injury and survival is important for better understanding and management of kidney diseases. KIBRA (kidney brain protein), an upstream regulator of the Hippo signaling pathway encoded by the Wwc1 gene, shares the pro-injury properties of its putative binding partner dendrin and antagonizes the pro-survival signaling of the downstream Hippo pathway effector YAP (Yes-associated protein) in Drosophila and MCF10A cells. We recently identified YAP as an essential component of the glomerular filtration barrier that promotes podocyte survival by inhibiting dendrin pro-apoptotic function. Despite these recent advances, the signaling pathways that mediate podocyte injury remain poorly understood. Here we tested the hypothesis that, similar to its role in other model systems, KIBRA promotes podocyte injury. We found increased expression of KIBRA and phosphorylated YAP protein in glomeruli of patients with biopsy-proven focal segmental glomerulosclerosis (FSGS). KIBRA/WWc1 overexpression in murine podocytes promoted LATS kinase phosphorylation, leading to subsequent YAP Ser-127 phosphorylation, YAP cytoplasmic sequestration, and reduction in YAP target gene expression. Functionally, KIBRA overexpression induced significant morphological changes in podocytes, including disruption of the actin cytoskeletal architecture and reduction of focal adhesion size and number, all of which were rescued by subsequent YAP overexpression. Conversely, constitutive KIBRA knockout mice displayed reduced phosphorylated YAP and increased YAP expression at baseline. These mice were protected from acute podocyte foot process effacement following protamine sulfate perfusion. KIBRA knockdown podocytes were also protected against protamine-induced injury. These findings suggest an important role for KIBRA in the pathogenesis of podocyte injury and the progression of proteinuric kidney disease.
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Affiliation(s)
| | | | | | | | - Sara Towne
- Department of Pharmacological Sciences, and
| | | | - Fadi El Salem
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York 10029
| | - Ronald E Gordon
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York 10029
| | | | - John C He
- From the Division of Nephrology.,Department of Pharmacological Sciences, and
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