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Jonischkies K, del Angel M, Demiray YE, Loaiza Zambrano A, Stork O. The NDR family of kinases: essential regulators of aging. Front Mol Neurosci 2024; 17:1371086. [PMID: 38803357 PMCID: PMC11129689 DOI: 10.3389/fnmol.2024.1371086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 04/22/2024] [Indexed: 05/29/2024] Open
Abstract
Aging is defined as a progressive decline of cognitive and physiological functions over lifetime. Since the definition of the nine hallmarks of aging in 2013 by López-Otin, numerous studies have attempted to identify the main regulators and contributors in the aging process. One interesting group of proteins whose participation has been implicated in several aging hallmarks are the nuclear DBF2-related (NDR) family of serine-threonine AGC kinases. They are one of the core components of the Hippo signaling pathway and include NDR1, NDR2, LATS1 and LATS2 in mammals, along with its highly conserved metazoan orthologs; Trc in Drosophila melanogaster, SAX-1 in Caenorhabditis elegans, CBK1, DBF20 in Saccharomyces cerevisiae and orb6 in Saccharomyces pombe. These kinases have been independently linked to the regulation of widely diverse cellular processes disrupted during aging such as the cell cycle progression, transcription, intercellular communication, nutrient homeostasis, autophagy, apoptosis, and stem cell differentiation. However, a comprehensive overview of the state-of-the-art knowledge regarding the post-translational modifications of and by NDR kinases in aging has not been conducted. In this review, we summarize the current understanding of the NDR family of kinases, focusing on their relevance to various aging hallmarks, and emphasize the growing body of evidence that suggests NDR kinases are essential regulators of aging across species.
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Affiliation(s)
- Kevin Jonischkies
- Department of Genetics and Molecular Neurobiology, Institute of Biology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Miguel del Angel
- Department of Genetics and Molecular Neurobiology, Institute of Biology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Yunus Emre Demiray
- Department of Genetics and Molecular Neurobiology, Institute of Biology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Allison Loaiza Zambrano
- Department of Genetics and Molecular Neurobiology, Institute of Biology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Oliver Stork
- Department of Genetics and Molecular Neurobiology, Institute of Biology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
- Center for Behavioral Brain Science, Magdeburg, Germany
- Center for Intervention and Research on Adaptive and Maladaptive Brain Circuits Underlying Mental Health (C-I-R-C), Jena-Magdeburg-Halle, Germany
- German Center for Mental Health (DZPG), Jena-Magdeburg-Halle, Germany
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2
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Kim CL, Lim SB, Choi SH, Kim DH, Sim YE, Jo EH, Kim K, Lee K, Park HS, Lim SB, Kang LJ, Jeong HS, Lee Y, Hansen CG, Mo JS. The LKB1-TSSK1B axis controls YAP phosphorylation to regulate the Hippo-YAP pathway. Cell Death Dis 2024; 15:76. [PMID: 38245531 PMCID: PMC10799855 DOI: 10.1038/s41419-024-06465-4] [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: 07/31/2023] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 01/22/2024]
Abstract
The Hippo pathway's main effector, Yes-associated protein (YAP), plays a crucial role in tumorigenesis as a transcriptional coactivator. YAP's phosphorylation by core upstream components of the Hippo pathway, such as mammalian Ste20 kinase 1/2 (MST1/2), mitogen-activated protein kinase kinase kinase kinases (MAP4Ks), and their substrate, large tumor suppressor 1/2 (LATS1/2), influences YAP's subcellular localization, stability, and transcriptional activity. However, recent research suggests the existence of alternative pathways that phosphorylate YAP, independent of these core upstream Hippo pathway components, raising questions about additional means to inactivate YAP. In this study, we present evidence demonstrating that TSSK1B, a calcium/calmodulin-dependent protein kinase (CAMK) superfamily member, is a negative regulator of YAP, suppressing cellular proliferation and oncogenic transformation. Mechanistically, TSSK1B inhibits YAP through two distinct pathways. Firstly, the LKB1-TSSK1B axis directly phosphorylates YAP at Ser94, inhibiting the YAP-TEAD complex's formation and suppressing its target genes' expression. Secondly, the TSSK1B-LATS1/2 axis inhibits YAP via phosphorylation at Ser127. Our findings reveal the involvement of TSSK1B-mediated molecular mechanisms in the Hippo-YAP pathway, emphasizing the importance of multilevel regulation in critical cellular decision-making processes.
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Affiliation(s)
- Cho-Long Kim
- Department of Biomedical Sciences, Graduate School, Ajou University School of Medicine, Suwon, 16499, South Korea
| | - Su-Bin Lim
- Department of Biomedical Sciences, Graduate School, Ajou University School of Medicine, Suwon, 16499, South Korea
| | - Sue-Hee Choi
- Department of Biomedical Sciences, Graduate School, Ajou University School of Medicine, Suwon, 16499, South Korea
| | - Dong Hyun Kim
- Department of Biomedical Sciences, Graduate School, Ajou University School of Medicine, Suwon, 16499, South Korea
| | - Ye Eun Sim
- Department of Biomedical Sciences, Graduate School, Ajou University School of Medicine, Suwon, 16499, South Korea
| | - Eun-Hye Jo
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, South Korea
| | - Keeeun Kim
- Institute of Medical Science, Ajou University School of Medicine, Suwon, 16499, South Korea
| | - Keesook Lee
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, South Korea
| | - Hee-Sae Park
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, South Korea
| | - Su Bin Lim
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, South Korea
| | - Li-Jung Kang
- Three-Dimensional Immune System Imaging Core Facility, Ajou University, Suwon, 16499, South Korea
| | - Han-Sol Jeong
- Division of Applied Medicine, School of Korean Medicine, Pusan National University, Yangsan, 50612, South Korea
| | - Youngsoo Lee
- Institute of Medical Science, Ajou University School of Medicine, Suwon, 16499, South Korea
| | - Carsten G Hansen
- The University of Edinburgh, Institute for Regeneration and Repair, Centre for Inflammation Research, Edinburgh BioQuarter, Edinburgh, UK
| | - Jung-Soon Mo
- Department of Biomedical Sciences, Graduate School, Ajou University School of Medicine, Suwon, 16499, South Korea.
- Institute of Medical Science, Ajou University School of Medicine, Suwon, 16499, South Korea.
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3
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Zhao Y, Sheldon M, Sun Y, Ma L. New Insights into YAP/TAZ-TEAD-Mediated Gene Regulation and Biological Processes in Cancer. Cancers (Basel) 2023; 15:5497. [PMID: 38067201 PMCID: PMC10705714 DOI: 10.3390/cancers15235497] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/07/2023] [Accepted: 11/17/2023] [Indexed: 02/12/2024] Open
Abstract
The Hippo pathway is conserved across species. Key mammalian Hippo pathway kinases, including MST1/2 and LATS1/2, inhibit cellular growth by inactivating the TEAD coactivators, YAP, and TAZ. Extensive research has illuminated the roles of Hippo signaling in cancer, development, and regeneration. Notably, dysregulation of Hippo pathway components not only contributes to tumor growth and metastasis, but also renders tumors resistant to therapies. This review delves into recent research on YAP/TAZ-TEAD-mediated gene regulation and biological processes in cancer. We focus on several key areas: newly identified molecular patterns of YAP/TAZ activation, emerging mechanisms that contribute to metastasis and cancer therapy resistance, unexpected roles in tumor suppression, and advances in therapeutic strategies targeting this pathway. Moreover, we provide an updated view of YAP/TAZ's biological functions, discuss ongoing controversies, and offer perspectives on specific debated topics in this rapidly evolving field.
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Affiliation(s)
- Yang Zhao
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (Y.Z.); (M.S.)
| | - Marisela Sheldon
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (Y.Z.); (M.S.)
| | - Yutong Sun
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Li Ma
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (Y.Z.); (M.S.)
- The University of Texas MD Anderson Cancer Center UTHealth Houston Graduate School of Biomedical Sciences, Houston, TX 77030, USA
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Seo G, Yu C, Han H, Xing L, Kattan RE, An J, Kizhedathu A, Yang B, Luo A, Buckle AL, Tifrea D, Edwards R, Huang L, Ju HQ, Wang W. The Hippo pathway noncanonically drives autophagy and cell survival in response to energy stress. Mol Cell 2023; 83:3155-3170.e8. [PMID: 37595580 PMCID: PMC10568779 DOI: 10.1016/j.molcel.2023.07.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 06/22/2023] [Accepted: 07/18/2023] [Indexed: 08/20/2023]
Abstract
The Hippo pathway is known for its crucial involvement in development, regeneration, organ size control, and cancer. While energy stress is known to activate the Hippo pathway and inhibit its effector YAP, the precise role of the Hippo pathway in energy stress response remains unclear. Here, we report a YAP-independent function of the Hippo pathway in facilitating autophagy and cell survival in response to energy stress, a process mediated by its upstream components MAP4K2 and STRIPAK. Mechanistically, energy stress disrupts the MAP4K2-STRIPAK association, leading to the activation of MAP4K2. Subsequently, MAP4K2 phosphorylates ATG8-family member LC3, thereby facilitating autophagic flux. MAP4K2 is highly expressed in head and neck cancer, and its mediated autophagy is required for head and neck tumor growth in mice. Altogether, our study unveils a noncanonical role of the Hippo pathway in energy stress response, shedding light on this key growth-related pathway in tissue homeostasis and cancer.
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Affiliation(s)
- Gayoung Seo
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Clinton Yu
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA 92697, USA
| | - Han Han
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Li Xing
- Irvine Materials Research Institute, University of California, Irvine, Irvine, CA 92697, USA
| | - Rebecca Elizabeth Kattan
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Jeongmin An
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Amrutha Kizhedathu
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Bing Yang
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Annabella Luo
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Abigail L Buckle
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Delia Tifrea
- Department of Pathology, University of California, Irvine, Irvine, CA 92697, USA
| | - Robert Edwards
- Department of Pathology, University of California, Irvine, Irvine, CA 92697, USA
| | - Lan Huang
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA 92697, USA
| | - Huai-Qiang Ju
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou 510060, China.
| | - Wenqi Wang
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA.
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5
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Wei Y, Hui VLZ, Chen Y, Han R, Han X, Guo Y. YAP/TAZ: Molecular pathway and disease therapy. MedComm (Beijing) 2023; 4:e340. [PMID: 37576865 PMCID: PMC10412783 DOI: 10.1002/mco2.340] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 06/27/2023] [Accepted: 07/04/2023] [Indexed: 08/15/2023] Open
Abstract
The Yes-associated protein and its transcriptional coactivator with PDZ-binding motif (YAP/TAZ) are two homologous transcriptional coactivators that lie at the center of a key regulatory network of Hippo, Wnt, GPCR, estrogen, mechanical, and metabolism signaling. YAP/TAZ influences the expressions of downstream genes and proteins as well as enzyme activity in metabolic cycles, cell proliferation, inflammatory factor expression, and the transdifferentiation of fibroblasts into myofibroblasts. YAP/TAZ can also be regulated through epigenetic regulation and posttranslational modifications. Consequently, the regulatory function of these mechanisms implicates YAP/TAZ in the pathogenesis of metabolism-related diseases, atherosclerosis, fibrosis, and the delicate equilibrium between cancer progression and organ regeneration. As such, there arises a pressing need for thorough investigation of YAP/TAZ in clinical settings. In this paper, we aim to elucidate the signaling pathways that regulate YAP/TAZ and explore the mechanisms of YAP/TAZ-induce diseases and their potential therapeutic interventions. Furthermore, we summarize the current clinical studies investigating treatments targeting YAP/TAZ. We also address the limitations of existing research on YAP/TAZ and propose future directions for research. In conclusion, this review aims to provide fresh insights into the signaling mediated by YAP/TAZ and identify potential therapeutic targets to present innovative solutions to overcome the challenges associated with YAP/TAZ.
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Affiliation(s)
- Yuzi Wei
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduSichuanChina
| | - Victoria Lee Zhi Hui
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduSichuanChina
| | - Yilin Chen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduSichuanChina
- Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduSichuanChina
| | - Ruiying Han
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduSichuanChina
- Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduSichuanChina
| | - Xianglong Han
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduSichuanChina
- Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduSichuanChina
| | - Yongwen Guo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduSichuanChina
- Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduSichuanChina
- Department of OrthodonticsLanzhou Stomatological HospitalLanzhouGansuChina
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6
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Golubev DA, Zemskaya NV, Gorbunova AA, Kukuman DV, Moskalev A, Shaposhnikov MV. Studying the Geroprotective Properties of YAP/TAZ Signaling Inhibitors on Drosophila melanogaster Model. Int J Mol Sci 2023; 24:ijms24066006. [PMID: 36983079 PMCID: PMC10058302 DOI: 10.3390/ijms24066006] [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: 12/01/2022] [Revised: 02/28/2023] [Accepted: 03/21/2023] [Indexed: 03/30/2023] Open
Abstract
The transcriptional coactivators Yes-associated protein (YAP) and transcriptional coactivator with PDZ-binding motif (TAZ) are the main downstream effectors of the evolutionarily conserved Hippo signaling pathway. YAP/TAZ are implicated in the transcriptional regulation of target genes that are involved in a wide range of key biological processes affecting tissue homeostasis and play dual roles in the aging process, depending on the cellular and tissue context. The aim of the present study was to investigate whether pharmacological inhibitors of Yap/Taz increase the lifespan of Drosophila melanogaster. Real-time qRT-PCR was performed to measure the changes in the expression of Yki (Yorkie, the Drosophila homolog of YAP/TAZ) target genes. We have revealed a lifespan-increasing effect of YAP/TAZ inhibitors that was mostly associated with decreased expression levels of the wg and E2f1 genes. However, further analysis is required to understand the link between the YAP/TAZ pathway and aging.
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Affiliation(s)
- Denis A Golubev
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167982 Syktyvkar, Russia
| | - Nadezhda V Zemskaya
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167982 Syktyvkar, Russia
| | - Anastasia A Gorbunova
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167982 Syktyvkar, Russia
| | - Daria V Kukuman
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167982 Syktyvkar, Russia
| | - Alexey Moskalev
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167982 Syktyvkar, Russia
| | - Mikhail V Shaposhnikov
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences, 167982 Syktyvkar, Russia
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Borkowsky S, Gass M, Alavizargar A, Hanewinkel J, Hallstein I, Nedvetsky P, Heuer A, Krahn MP. Phosphorylation of LKB1 by PDK1 Inhibits Cell Proliferation and Organ Growth by Decreased Activation of AMPK. Cells 2023; 12:cells12050812. [PMID: 36899949 PMCID: PMC10000615 DOI: 10.3390/cells12050812] [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: 08/19/2022] [Revised: 02/24/2023] [Accepted: 03/03/2023] [Indexed: 03/08/2023] Open
Abstract
The master kinase LKB1 is a key regulator of se veral cellular processes, including cell proliferation, cell polarity and cellular metabolism. It phosphorylates and activates several downstream kinases, including AMP-dependent kinase, AMPK. Activation of AMPK by low energy supply and phosphorylation of LKB1 results in an inhibition of mTOR, thus decreasing energy-consuming processes, in particular translation and, thus, cell growth. LKB1 itself is a constitutively active kinase, which is regulated by posttranslational modifications and direct binding to phospholipids of the plasma membrane. Here, we report that LKB1 binds to Phosphoinositide-dependent kinase (PDK1) by a conserved binding motif. Furthermore, a PDK1-consensus motif is located within the kinase domain of LKB1 and LKB1 gets phosphorylated by PDK1 in vitro. In Drosophila, knockin of phosphorylation-deficient LKB1 results in normal survival of the flies, but an increased activation of LKB1, whereas a phospho-mimetic LKB1 variant displays decreased AMPK activation. As a functional consequence, cell growth as well as organism size is decreased in phosphorylation-deficient LKB1. Molecular dynamics simulations of PDK1-mediated LKB1 phosphorylation revealed changes in the ATP binding pocket, suggesting a conformational change upon phosphorylation, which in turn can alter LKB1's kinase activity. Thus, phosphorylation of LKB1 by PDK1 results in an inhibition of LKB1, decreased activation of AMPK and enhanced cell growth.
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Affiliation(s)
- Sarah Borkowsky
- Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer Campus 1-A14, 48149 Münster, Germany
| | - Maximilian Gass
- Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer Campus 1-A14, 48149 Münster, Germany
| | - Azadeh Alavizargar
- Institute of Physical Chemistry, University of Münster, Corrensstr. 28/30, 48149 Münster, Germany
| | - Johannes Hanewinkel
- Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer Campus 1-A14, 48149 Münster, Germany
| | - Ina Hallstein
- Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer Campus 1-A14, 48149 Münster, Germany
| | - Pavel Nedvetsky
- Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer Campus 1-A14, 48149 Münster, Germany
| | - Andreas Heuer
- Institute of Physical Chemistry, University of Münster, Corrensstr. 28/30, 48149 Münster, Germany
| | - Michael P. Krahn
- Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer Campus 1-A14, 48149 Münster, Germany
- Correspondence: ; Tel.: +49-251-8357052
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TNS1: Emerging Insights into Its Domain Function, Biological Roles, and Tumors. BIOLOGY 2022; 11:biology11111571. [PMID: 36358270 PMCID: PMC9687257 DOI: 10.3390/biology11111571] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/24/2022] [Accepted: 10/25/2022] [Indexed: 01/25/2023]
Abstract
Tensins are a family of cellular-adhesion constituents that have been extensively studied. They have instrumental roles in the pathogenesis of numerous diseases. The mammalian tensin family comprises four members: tensin1 (TNS1), tensin2, tensin3, and tensin4. Among them, TNS1 has recently received attention from researchers because of its structural properties. TNS1 engages in various biological processes, such as cell adhesion, polarization, migration, invasion, proliferation, apoptosis, and mechano-transduction, by interacting with various partner proteins. Moreover, the abnormal expression of TNS1 in vivo is associated with the development of various diseases, especially tumors. Interestingly, the role of TNS1 in different tumors is still controversial. Here, we systematically summarize three aspects of TNS1: the gene structure, the biological processes underlying its action, and the dual regulatory role of TNS1 in different tumors through different mechanisms, of which we provide the first overview.
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9
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Terry BK, Kim S. The Role of Hippo-YAP/TAZ Signaling in Brain Development. Dev Dyn 2022; 251:1644-1665. [PMID: 35651313 DOI: 10.1002/dvdy.504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 05/19/2022] [Accepted: 05/24/2022] [Indexed: 11/08/2022] Open
Abstract
In order for our complex nervous system to develop normally, both precise spatial and temporal regulation of a number of different signaling pathways is critical. During both early embryogenesis and in organ development, one pathway that has been repeatedly implicated is the Hippo-YAP/TAZ signaling pathway. The paralogs YAP and TAZ are transcriptional co-activators that play an important role in cell proliferation, cell differentiation, and organ growth. Regulation of these proteins by the Hippo kinase cascade is therefore important for normal development. In this article, we review the growing field of research surrounding the role of Hippo-YAP/TAZ signaling in normal and atypical brain development. Starting from the development of the neural tube to the development and refinement of the cerebral cortex, cerebellum, and ventricular system, we address the typical role of these transcriptional co-activators, the functional consequences that manipulation of YAP/TAZ and their upstream regulators have on brain development, and where further research may be of benefit. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Bethany K Terry
- Shriners Hospitals Pediatrics Research Center, Department of Neural Sciences, Temple University Lewis Katz School of Medicine, Philadelphia, PA.,Biomedical Sciences Graduate Program, Temple University Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Seonhee Kim
- Shriners Hospitals Pediatrics Research Center, Department of Neural Sciences, Temple University Lewis Katz School of Medicine, Philadelphia, PA
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10
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Behl T, Gupta A, Sehgal A, Sharma S, Singh S, Sharma N, Diaconu CC, Rahdar A, Hafeez A, Bhatia S, Al-Harrasi A, Bungau S. A spotlight on underlying the mechanism of AMPK in diabetes complications. Inflamm Res 2021; 70:939-957. [PMID: 34319417 DOI: 10.1007/s00011-021-01488-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/29/2021] [Accepted: 06/08/2021] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE Type 2 diabetes (T2D) is one of the centenarian metabolic disorders and is considered as a stellar and leading health issue worldwide. According to the International Diabetes Federation (IDF) Diabetes Atlas and National Diabetes Statistics, the number of diabetic patients will increase at an exponential rate from 463 to 700 million by the year 2045. Thus, there is a great need for therapies targeting functions that can help in maintaining the homeostasis of glucose levels and improving insulin sensitivity. 5' adenosine monophosphate-activated protein kinase (AMPK) activation, by various direct and indirect factors, might help to overcome the hurdles (like insulin resistance) associated with the conventional approach. MATERIALS AND RESULTS A thorough review and analysis was conducted using various database including MEDLINE and EMBASE databases, with Google scholar using various keywords. This extensive review concluded that various drugs (plant-based, synthetic indirect/direct activators) are available, showing tremendous potential in maintaining the homeostasis of glucose and lipid metabolism, without causing insulin resistance, and improving insulin sensitivity. Moreover, these drugs have an effect against diabetes and are therapeutically beneficial in the treatment of diabetes-associated complications (neuropathy and nephropathy) via mechanism involving inhibition of nuclear translocation of SMAD4 (SMAD family member) expression and association with peripheral nociceptive neurons mediated by AMPK. CONCLUSION From the available information, it may be concluded that various indirect/direct activators show tremendous potential in maintaining the homeostasis of glucose and lipid metabolism, without resulting in insulin resistance, and may improve insulin sensitivity, as well. Therefore, in a nut shell, it may be concluded that the regulation of APMK functions by various direct/indirect activators may bring promising results. These activators may emerge as a novel therapy in diabetes and its associated complications.
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Affiliation(s)
- Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
| | - Amit Gupta
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Aayush Sehgal
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Sanchay Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Camelia Cristina Diaconu
- Internal Medicine Department, Clinical Emergency Hospital of Bucharest, Bucharest, Romania.,Department 5, 'Carol Davila' University of Medicine and Pharmacy, Bucharest, Romania
| | - Abbas Rahdar
- Department of Physics, University of Zabol, Zabol, Iran
| | - Abdul Hafeez
- Glocal School of Pharmacy, Glocal University, Mirzapur, Uttar Pradesh, India
| | - Saurabh Bhatia
- Amity Institute of Pharmacy, Amity University, Haryana, India.,Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
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11
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Cho YS, Jiang J. Hippo-Independent Regulation of Yki/Yap/Taz: A Non-canonical View. Front Cell Dev Biol 2021; 9:658481. [PMID: 33869224 PMCID: PMC8047194 DOI: 10.3389/fcell.2021.658481] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/02/2021] [Indexed: 12/22/2022] Open
Abstract
Initially identified in Drosophila, the Hippo signaling pathway has emerged as an evolutionarily conserved tumor suppressor pathway that controls tissue growth and organ size by simultaneously inhibiting cell proliferation and promoting cell death. Deregulation of Hippo pathway activity has been implicated in a wide range of human cancers. The core Hippo pathway consists of a kinase cascade: an upstream kinase Hippo (Hpo)/MST1/2 phosphorylates and activates a downstream kinase Warts (Wts)/Lats1/2, leading to phosphorylation and inactivation of a transcriptional coactivator Yki/YAP/Taz. Many upstream signals, including cell adhesion, polarity, mechanical stress, and soluble factors, regulate Hippo signaling through the kinase cascade, leading to change in the cytoplasmic/nuclear localization of Yki/YAP/Taz. However, recent studies have uncovered other mechanisms that regulate Yki/YAP/Taz subcellular localization, stability, and activity independent of the Hpo kinase cascade. These mechanisms provide additional layers of pathway regulation, nodes for pathway crosstalk, and opportunities for pathway intervention in cancer treatment and regenerative medicine.
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Affiliation(s)
- Yong Suk Cho
- Department of Molecular Biology, UT Southwestern Medical Center, Dallas, TX, United States
| | - Jin Jiang
- Department of Molecular Biology, UT Southwestern Medical Center, Dallas, TX, United States.,Department of Pharmacology, UT Southwestern Medical Center, Dallas, TX, United States
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12
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Ibar C, Irvine KD. Integration of Hippo-YAP Signaling with Metabolism. Dev Cell 2021; 54:256-267. [PMID: 32693058 DOI: 10.1016/j.devcel.2020.06.025] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/27/2020] [Accepted: 06/21/2020] [Indexed: 12/12/2022]
Abstract
The Hippo-Yes-associated protein (YAP) signaling network plays a central role as an integrator of signals that control cellular proliferation and differentiation. The past several years have provided an increasing appreciation and understanding of the diverse mechanisms through which metabolites and metabolic signals influence Hippo-YAP signaling, and how Hippo-YAP signaling, in turn, controls genes that direct cellular and organismal metabolism. These connections enable Hippo-YAP signaling to coordinate organ growth and homeostasis with nutrition and metabolism. In this review, we discuss the current understanding of some of the many interconnections between Hippo-YAP signaling and metabolism and how they are affected in disease conditions.
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Affiliation(s)
- Consuelo Ibar
- Waksman Institute and Department of Molecular Biology and Biochemistry, Rutgers University, Piscataway, NJ 08854, USA
| | - Kenneth D Irvine
- Waksman Institute and Department of Molecular Biology and Biochemistry, Rutgers University, Piscataway, NJ 08854, USA.
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13
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Sahu MR, Mondal AC. Neuronal Hippo signaling: From development to diseases. Dev Neurobiol 2020; 81:92-109. [PMID: 33275833 DOI: 10.1002/dneu.22796] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/18/2020] [Accepted: 11/27/2020] [Indexed: 01/12/2023]
Abstract
Hippo signaling pathway is a highly conserved and familiar tissue growth regulator, primarily dealing with cell survival, cell proliferation, and apoptosis. The Yes-associated protein (YAP) is the key transcriptional effector molecule, which is under negative regulation of the Hippo pathway. Wealth of studies have identified crucial roles of Hippo/YAP signaling pathway during the process of development, including the development of neuronal system. We provide here, an overview of the contributions of this signaling pathway at multiple stages of neuronal development including, proliferation of neural stem cells (NSCs), migration of NSCs toward their destined niche, maintaining NSCs in the quiescent state, differentiation of NSCs into neurons, neuritogenesis, synaptogenesis, brain development, and in neuronal apoptosis. Hyperactivation of the neuronal Hippo pathway can also lead to a variety of devastating neurodegenerative diseases. Instances of aberrant Hippo pathway leading to neurodegenerative diseases along with the approaches utilizing this pathway as molecular targets for therapeutics has been highlighted in this review. Recent evidences suggesting neuronal repair and regenerative potential of this pathway has also been pointed out, that will shed light on a novel aspect of Hippo pathway in regenerative medicine. Our review provides a better understanding of the significance of Hippo pathway in the journey of neuronal system from development to diseases as a whole.
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Affiliation(s)
- Manas Ranjan Sahu
- Laboratory of Cellular and Molecular Neurobiology, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Amal Chandra Mondal
- Laboratory of Cellular and Molecular Neurobiology, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
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14
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The Hippo Pathway as a Driver of Select Human Cancers. Trends Cancer 2020; 6:781-796. [PMID: 32446746 DOI: 10.1016/j.trecan.2020.04.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 04/20/2020] [Accepted: 04/20/2020] [Indexed: 12/11/2022]
Abstract
The Hippo pathway regulates myriad biological processes in diverse species and is a key cancer signaling network in humans. Although Hippo has been linked to multiple aspects of cancer, its role in this disease is incompletely understood. Large-scale pan-cancer analyses of core Hippo pathway genes reveal that the pathway is mutated at a high frequency only in select human cancers, including malignant mesothelioma and meningioma. Hippo pathway deregulation is also enriched in squamous epithelial cancers. We discuss cancer-related functions of the Hippo pathway and potential explanations for the cancer-restricted mutation profile of core Hippo pathway genes. Greater understanding of Hippo pathway deregulation in cancers will be essential to guide the imminent use of Hippo-targeted therapies.
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15
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Gangwani K, Snigdha K, Kango-Singh M. Tep1 Regulates Yki Activity in Neural Stem Cells in Drosophila Glioma Model. Front Cell Dev Biol 2020; 8:306. [PMID: 32457905 PMCID: PMC7225285 DOI: 10.3389/fcell.2020.00306] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 04/07/2020] [Indexed: 12/18/2022] Open
Abstract
Glioblastoma Multiforme (GBM) is the most common form of malignant brain tumor with poor prognosis. Amplification of Epidermal Growth Factor Receptor (EGFR), and mutations leading to activation of Phosphatidyl-Inositol-3 Kinase (PI3K) pathway are commonly associated with GBM. Using a previously published Drosophila glioma model generated by coactivation of PI3K and EGFR pathways [by downregulation of Pten and overexpression of oncogenic Ras] in glial cells, we showed that the Drosophila Tep1 gene (ortholog of human CD109) regulates Yki (the Drosophila ortholog of human YAP/TAZ) via an evolutionarily conserved mechanism. Oncogenic signaling by the YAP/TAZ pathway occurs in cells that acquire CD109 expression in response to the inflammatory environment induced by radiation in clinically relevant models. Further, downregulation of Tep1 caused a reduction in Yki activity and reduced glioma growth. A key function of Yki in larval CNS is stem cell renewal and formation of neuroblasts. Other reports suggest different upstream regulators of Yki activity in the optic lobe versus the central brain regions of the larval CNS. We hypothesized that Tep1 interacts with the Hippo pathway effector Yki to regulate neuroblast numbers. We tested if Tep1 acts through Yki to affect glioma growth, and if in normal cells Tep1 affects neuroblast number and proliferation. Our data suggests that Tep1 affects Yki mediated stem cell renewal in glioma, as reduction of Tep significantly decreases the number of neuroblasts in glioma. Thus, we identify Tep1-Yki interaction in the larval CNS that plays a key role in glioma growth and progression.
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Affiliation(s)
- Karishma Gangwani
- Department of Biology, University of Dayton, Dayton, OH, United States
| | - Kirti Snigdha
- Department of Biology, University of Dayton, Dayton, OH, United States
| | - Madhuri Kango-Singh
- Department of Biology, University of Dayton, Dayton, OH, United States
- Center for Tissue Regeneration and Engineering at Dayton (TREND), University of Dayton, Dayton, OH, United States
- Premedical Programs, University of Dayton, Dayton, OH, United States
- Integrated Science and Engineering Center (ISE), University of Dayton, Dayton, OH, United States
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16
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Tyra LK, Nandi N, Tracy C, Krämer H. Yorkie Growth-Promoting Activity Is Limited by Atg1-Mediated Phosphorylation. Dev Cell 2020; 52:605-616.e7. [PMID: 32032548 DOI: 10.1016/j.devcel.2020.01.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/26/2019] [Accepted: 01/09/2020] [Indexed: 01/31/2023]
Abstract
The expression of multiple growth-promoting genes is coordinated by the transcriptional co-activator Yorkie with its major regulatory input provided by the Hippo-Warts kinase cascade. Here, we identify Atg1/ULK1-mediated phosphorylation of Yorkie as an additional inhibitory input independent of the Hippo-Warts pathway. Two serine residues in Yorkie, S74 and S97, are Atg1/ULK1 consensus target sites and are phosphorylated by ULK1 in vitro, thereby preventing its binding to Scalloped. In vivo, gain of function of Atg1, or its activator Acinus, caused elevated Yorkie phosphorylation and inhibited Yorkie's growth-promoting activity. Loss of function of Atg1 or Acinus raised expression of Yorkie target genes and increased tissue size. Unlike Atg1's role in autophagy, Atg1-mediated phosphorylation of Yorkie does not require Atg13. Atg1 is activated by starvation and other cellular stressors and therefore can impose temporary stress-induced constraints on the growth-promoting gene networks under the control of Hippo-Yorkie signaling.
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Affiliation(s)
- Lauren K Tyra
- Peter O'Donnell Jr. Brain Institute, Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX 75390-9111, USA
| | - Nilay Nandi
- Peter O'Donnell Jr. Brain Institute, Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX 75390-9111, USA
| | - Charles Tracy
- Peter O'Donnell Jr. Brain Institute, Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX 75390-9111, USA
| | - Helmut Krämer
- Peter O'Donnell Jr. Brain Institute, Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX 75390-9111, USA; Department of Cell Biology, UT Southwestern Medical Center, Dallas, TX 75390-9111, USA.
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17
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Abstract
The Hippo pathway was initially discovered in Drosophila melanogaster as a key regulator of tissue growth. It is an evolutionarily conserved signaling cascade regulating numerous biological processes, including cell growth and fate decision, organ size control, and regeneration. The core of the Hippo pathway in mammals consists of a kinase cascade, MST1/2 and LATS1/2, as well as downstream effectors, transcriptional coactivators YAP and TAZ. These core components of the Hippo pathway control transcriptional programs involved in cell proliferation, survival, mobility, stemness, and differentiation. The Hippo pathway is tightly regulated by both intrinsic and extrinsic signals, such as mechanical force, cell-cell contact, polarity, energy status, stress, and many diffusible hormonal factors, the majority of which act through G protein-coupled receptors. Here, we review the current understanding of molecular mechanisms by which signals regulate the Hippo pathway with an emphasis on mechanotransduction and the effects of this pathway on basic biology and human diseases.
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Affiliation(s)
- Shenghong Ma
- Department of Pharmacology and Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, USA; , , ,
| | - Zhipeng Meng
- Department of Pharmacology and Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, USA; , , ,
| | - Rui Chen
- Department of Pharmacology and Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, USA; , , ,
| | - Kun-Liang Guan
- Department of Pharmacology and Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, USA; , , ,
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18
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Abstract
The Hippo signalling pathway and its transcriptional co-activator targets Yorkie/YAP/TAZ first came to attention because of their role in tissue growth control. Over the past 15 years, it has become clear that, like other developmental pathways (e.g. the Wnt, Hedgehog and TGFβ pathways), Hippo signalling is a 'jack of all trades' that is reiteratively used to mediate a range of cellular decision-making processes from proliferation, death and morphogenesis to cell fate determination. Here, and in the accompanying poster, we briefly outline the core pathway and its regulation, and describe the breadth of its roles in animal development.
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Affiliation(s)
- John Robert Davis
- Apoptosis and Proliferation Control Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Nicolas Tapon
- Apoptosis and Proliferation Control Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
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19
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Zheng Y, Pan D. The Hippo Signaling Pathway in Development and Disease. Dev Cell 2019; 50:264-282. [PMID: 31386861 PMCID: PMC6748048 DOI: 10.1016/j.devcel.2019.06.003] [Citation(s) in RCA: 487] [Impact Index Per Article: 97.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 05/23/2019] [Accepted: 06/09/2019] [Indexed: 12/13/2022]
Abstract
The Hippo signaling pathway regulates diverse physiological processes, and its dysfunction has been implicated in an increasing number of human diseases, including cancer. Here, we provide an updated review of the Hippo pathway; discuss its roles in development, homeostasis, regeneration, and diseases; and highlight outstanding questions for future investigation and opportunities for Hippo-targeted therapies.
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Affiliation(s)
- Yonggang Zheng
- Department of Physiology, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390-9040, USA
| | - Duojia Pan
- Department of Physiology, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390-9040, USA.
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20
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Wu D, Birukov K. Endothelial Cell Mechano-Metabolomic Coupling to Disease States in the Lung Microvasculature. Front Bioeng Biotechnol 2019; 7:172. [PMID: 31380363 PMCID: PMC6658821 DOI: 10.3389/fbioe.2019.00172] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/03/2019] [Indexed: 12/15/2022] Open
Abstract
Lungs are the most vascular part of humans, accepting the totality of cardiac output in a volume much smaller than the body itself. Due to this cardiac output, the lung microvasculature is subject to mechanical forces including shear stress and cyclic stretch that vary with the cardiac and breathing cycle. Vessels are surrounded by extracellular matrix which dictates the stiffness which endothelial cells also sense and respond to. Shear stress, stiffness, and cyclic stretch are known to influence endothelial cell state. At high shear stress, endothelial cells exhibit cell quiescence marked by low inflammatory markers and high nitric oxide synthesis, whereas at low shear stress, endothelial cells are thought to "activate" into a pro-inflammatory state and have low nitric oxide. Shear stress' profound effect on vascular phenotype is most apparent in the arterial vasculature and in the pathophysiology of vascular inflammation. To conduct the flow of blood from the right heart, the lung microvasculature must be rigid yet compliant. It turns out that excessive substrate rigidity or stiffness is important in the development of pulmonary hypertension and chronic fibrosing lung diseases via excessive cell proliferation or the endothelial-mesenchymal transition. Recently, a new body of literature has evolved that couples mechanical sensing to endothelial phenotypic changes through metabolic signaling in clinically relevant contexts such as pulmonary hypertension, lung injury syndromes, as well as fibrosis, which is the focus of this review. Stretch, like flow, has profound effect on endothelial phenotype; metabolism studies due to stretch are in their infancy.
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Affiliation(s)
- David Wu
- Section of Pulmonary and Critical Care, Department of Medicine, University of Chicago, Chicago, IL, United States
| | - Konstantin Birukov
- Department of Anesthesia, University of Maryland, Baltimore, MD, United States
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21
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Huang J, Wang X, Zhu Y, Li Z, Zhu Y, Wu J, Qin Z, Xiang M, Lin F. Exercise activates lysosomal function in the brain through AMPK-SIRT1-TFEB pathway. CNS Neurosci Ther 2019; 25:796-807. [PMID: 30864262 PMCID: PMC6515701 DOI: 10.1111/cns.13114] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/22/2019] [Accepted: 02/05/2019] [Indexed: 01/01/2023] Open
Abstract
AIM To study the effects of exercise on lysosomal functions. METHODS Mouse exercise model was established and wheel running was scheduled as 18 rpm (14:00-17:00), 5 d/wk, for 8 weeks. Mice were injected EX527 to inhibit SIRT1 activity. The protein level was assayed with Western blot and immunofluorescence histochemistry. The transmission electron microscopic examination was used to show the structure of lysosome and mitochondria. RESULTS Exercise promoted the nuclear translocation of TFEB in the cortex which upregulated the transcription of genes associated with autophagy and lysosome. Exercise directly activated autophagy/lysosome system via up-regulating of AMPK-SIRT1 signaling. The SIRT1 inhibitor EX527 decreased TFEB regulated gene transcription but had little effect on the nuclear translocation of TFEB. In addition, long-term exercise showed more significant effects on activation of lysosomes biogenesis compared with the short-term exercise and trehalose, a classical autophagy activator in the mTOR-independent pathway. CONCLUSION Running exercise activates lysosomal function in the brain through AMPK-SIRT1-TFEB pathway.
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Affiliation(s)
- Jun Huang
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases (SZS0703)Soochow University School of Pharmaceutical ScienceSu ZhouChina
| | - Xue Wang
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases (SZS0703)Soochow University School of Pharmaceutical ScienceSu ZhouChina
| | - Yi Zhu
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases (SZS0703)Soochow University School of Pharmaceutical ScienceSu ZhouChina
| | - Zhe Li
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases (SZS0703)Soochow University School of Pharmaceutical ScienceSu ZhouChina
| | - Yu‐Ting Zhu
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases (SZS0703)Soochow University School of Pharmaceutical ScienceSu ZhouChina
| | - Jun‐Chao Wu
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases (SZS0703)Soochow University School of Pharmaceutical ScienceSu ZhouChina
| | - Zheng‐Hong Qin
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases (SZS0703)Soochow University School of Pharmaceutical ScienceSu ZhouChina
| | - Min Xiang
- Suzhou Vocation Health collegeSuZhouChina
| | - Fang Lin
- Department of Pharmacology, Laboratory of Aging and Nervous Diseases (SZS0703)Soochow University School of Pharmaceutical ScienceSu ZhouChina
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22
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Wang S, Ma K, Zhou C, Wang Y, Hu G, Chen L, Li Z, Hu C, Xu Q, Zhu H, Liu M, Xu N. LKB1 and YAP phosphorylation play important roles in Celastrol-induced β-catenin degradation in colorectal cancer. Ther Adv Med Oncol 2019; 11:1758835919843736. [PMID: 31040884 PMCID: PMC6477772 DOI: 10.1177/1758835919843736] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 03/18/2019] [Indexed: 02/05/2023] Open
Abstract
Wnt/β-catenin and Hippo pathways play essential roles in the tumorigenesis and
development of colorectal cancer. We found that Celastrol, isolated from
Tripterygium wilfordii plant, exerted a significant
inhibitory effect on colorectal cancer cell growth in vitro and
in vivo, and further unraveled the molecular mechanisms.
Celastrol induced β-catenin degradation through phosphorylation of
Yes-associated protein (YAP), a major downstream effector of Hippo pathway, and
also Celastrol-induced β-catenin degradation was dependent on liver kinase B1
(LKB1). Celastrol increased the transcriptional activation of LKB1, partially
through the heat shock factor 1 (HSF1). Moreover, LKB1 activated AMP-activated
protein kinase α (AMPKα) and further phosphorylated YAP, which eventually
promoted the degradation of β-catenin. In addition, LKB1 deficiency promoted
colorectal cancer cell growth and attenuated the inhibitory effect of Celastrol
on colorectal cancer growth both in vitro and in
vivo. Taken together, Celastrol inhibited colorectal cancer cell
growth by promoting β-catenin degradation via the
HSF1–LKB1–AMPKα–YAP pathway. These results suggested that Celastrol may
potentially serve as a future drug for colorectal cancer treatment.
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Affiliation(s)
- Shuren Wang
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Kai Ma
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Cuiqi Zhou
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Yu Wang
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Guanghui Hu
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lechuang Chen
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhuo Li
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chenfei Hu
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qing Xu
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hongxia Zhu
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Mei Liu
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 17 PanjiayuanNanli, Chaoyang District, P.O. Box 2258, 100021, Beijing, P. R. China
| | - Ningzhi Xu
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 17 PanjiayuanNanli, Chaoyang District, P.O. Box 2258, 100021, Beijing, P. R. China State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, No.17, 3rd Section of People's South Road, Chengdu, 610041, P.R. China
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23
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Abstract
Cancer is a serious health issue in the world due to a large body of cancer-related human deaths, and there is no current treatment available to efficiently treat the disease as the tumor is often diagnosed at a serious stage. Moreover, Cancer cells are often resistant to chemotherapy, radiotherapy, and molecular-targeted therapy. Upon further knowledge of mechanisms of tumorigenesis, aggressiveness, metastasis, and resistance to treatments, it is necessary to detect the disease at an earlier stage and for a better response to therapy. The hippo pathway possesses the unique capacity to lead to tumorigenesis. Mutations and altered expression of its core components (MST1/2, LATS1/2, YAP and TAZ) promote the migration, invasion, malignancy of cancer cells. The biological significance and deregulation of it have received a large body of interests in the past few years. Further understanding of hippo pathway will be responsible for cancer treatment. In this review, we try to discover the function of hippo pathway in different diversity of cancers, and discuss how Hippo pathway contributes to other cellular signaling pathways. Also, we try to describe how microRNAs, circRNAs, and ZNFs regulate hippo pathway in the process of cancer. It is necessary to find new therapy strategies for cancer.
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Affiliation(s)
- Yanyan Han
- Department of Pathology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.
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24
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The Scalloped and Nerfin-1 Transcription Factors Cooperate to Maintain Neuronal Cell Fate. Cell Rep 2018; 25:1561-1576.e7. [DOI: 10.1016/j.celrep.2018.10.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 06/14/2018] [Accepted: 10/09/2018] [Indexed: 02/08/2023] Open
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25
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Cox AG, Tsomides A, Yimlamai D, Hwang KL, Miesfeld J, Galli GG, Fowl BH, Fort M, Ma KY, Sullivan MR, Hosios AM, Snay E, Yuan M, Brown KK, Lien EC, Chhangawala S, Steinhauser ML, Asara JM, Houvras Y, Link B, Vander Heiden MG, Camargo FD, Goessling W. Yap regulates glucose utilization and sustains nucleotide synthesis to enable organ growth. EMBO J 2018; 37:embj.2018100294. [PMID: 30348863 DOI: 10.15252/embj.2018100294] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/12/2018] [Accepted: 09/13/2018] [Indexed: 12/14/2022] Open
Abstract
The Hippo pathway and its nuclear effector Yap regulate organ size and cancer formation. While many modulators of Hippo activity have been identified, little is known about the Yap target genes that mediate these growth effects. Here, we show that yap -/- mutant zebrafish exhibit defects in hepatic progenitor potential and liver growth due to impaired glucose transport and nucleotide biosynthesis. Transcriptomic and metabolomic analyses reveal that Yap regulates expression of glucose transporter glut1, causing decreased glucose uptake and use for nucleotide biosynthesis in yap -/- mutants, and impaired glucose tolerance in adults. Nucleotide supplementation improves Yap deficiency phenotypes, indicating functional importance of glucose-fueled nucleotide biosynthesis. Yap-regulated glut1 expression and glucose uptake are conserved in mammals, suggesting that stimulation of anabolic glucose metabolism is an evolutionarily conserved mechanism by which the Hippo pathway controls organ growth. Together, our results reveal a central role for Hippo signaling in glucose metabolic homeostasis.
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Affiliation(s)
- Andrew G Cox
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Allison Tsomides
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Dean Yimlamai
- Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Katie L Hwang
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.,Harvard/MIT MD-PhD Program, Harvard Medical School, Boston, MA, USA
| | | | - Giorgio G Galli
- Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Brendan H Fowl
- Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Michael Fort
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kimberly Y Ma
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Mark R Sullivan
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Aaron M Hosios
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Erin Snay
- Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Min Yuan
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Kristin K Brown
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Evan C Lien
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.,Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Sagar Chhangawala
- Weill Cornell Medical College and New York Presbyterian Hospital, New York, NY, USA
| | - Matthew L Steinhauser
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.,Harvard Stem Cell Institute, Cambridge, MA, USA.,Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - John M Asara
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Yariv Houvras
- Weill Cornell Medical College and New York Presbyterian Hospital, New York, NY, USA
| | - Brian Link
- Medical College of Wisconsin, Milwaukee, WI, USA
| | - Matthew G Vander Heiden
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.,Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Fernando D Camargo
- Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,Harvard Stem Cell Institute, Cambridge, MA, USA
| | - Wolfram Goessling
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA .,Harvard Stem Cell Institute, Cambridge, MA, USA.,Broad Institute of MIT and Harvard, Cambridge, MA, USA.,Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.,Harvard-MIT Division of Health Sciences and Technology, Boston, MA, USA
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26
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Segrelles C, Paramio JM, Lorz C. The transcriptional co-activator YAP: A new player in head and neck cancer. Oral Oncol 2018; 86:25-32. [PMID: 30409308 DOI: 10.1016/j.oraloncology.2018.08.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 08/26/2018] [Indexed: 12/14/2022]
Abstract
The Hippo-YAP (Yes-associated protein) pathway is a key regulator of tissue growth, organ size and stem cell function. More recently, a fundamental role for this pathway has emerged in stem cell function and tumorigenesis. Activation of the transcriptional co-activator YAP promotes cell-contact independent proliferation, epithelial to mesenchymal transition (EMT), cancer stem cell features and drug resistance. In this review, we describe the main components of the pathway, the microenvironment and the cell-intrinsic cues governing its activation, the downstream players of the pathway and the biological implications of their activation in the context of cancer. We will focus on the existing knowledge of this pathway in head and neck squamous carcinoma (HNSCC), its clinical value in this type of cancer as a marker of poor prognosis and resistance to therapy, as well as the most encouraging therapeutic strategies targeting the pathway.
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Affiliation(s)
- Carmen Segrelles
- Molecular Oncology Unit, CIEMAT (ed 70A), Av. Complutense 40, 28040 Madrid, Spain; Molecular Oncology, University Hospital 12 de Octubre, Research Institute 12 de Octubre i+12, Av. Córdoba s/n, 28041 Madrid, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Av. Monforte de Lemos, 3-5, 28029 Madrid, Spain
| | - Jesús M Paramio
- Molecular Oncology Unit, CIEMAT (ed 70A), Av. Complutense 40, 28040 Madrid, Spain; Molecular Oncology, University Hospital 12 de Octubre, Research Institute 12 de Octubre i+12, Av. Córdoba s/n, 28041 Madrid, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Av. Monforte de Lemos, 3-5, 28029 Madrid, Spain
| | - Corina Lorz
- Molecular Oncology Unit, CIEMAT (ed 70A), Av. Complutense 40, 28040 Madrid, Spain; Molecular Oncology, University Hospital 12 de Octubre, Research Institute 12 de Octubre i+12, Av. Córdoba s/n, 28041 Madrid, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Av. Monforte de Lemos, 3-5, 28029 Madrid, Spain.
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27
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Gill MK, Christova T, Zhang YY, Gregorieff A, Zhang L, Narimatsu M, Song S, Xiong S, Couzens AL, Tong J, Krieger JR, Moran MF, Zlotta AR, van der Kwast TH, Gingras AC, Sicheri F, Wrana JL, Attisano L. A feed forward loop enforces YAP/TAZ signaling during tumorigenesis. Nat Commun 2018; 9:3510. [PMID: 30158528 PMCID: PMC6115388 DOI: 10.1038/s41467-018-05939-2] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 07/30/2018] [Indexed: 12/13/2022] Open
Abstract
In most solid tumors, the Hippo pathway is inactivated through poorly understood mechanisms that result in the activation of the transcriptional regulators, YAP and TAZ. Here, we identify NUAK2 as a YAP/TAZ activator that directly inhibits LATS-mediated phosphorylation of YAP/TAZ and show that NUAK2 induction by YAP/TAZ and AP-1 is required for robust YAP/TAZ signaling. Pharmacological inhibition or loss of NUAK2 reduces the growth of cultured cancer cells and mammary tumors in mice. Moreover, in human patient samples, we show that NUAK2 expression is elevated in aggressive, high-grade bladder cancer and strongly correlates with a YAP/TAZ gene signature. These findings identify a positive feed forward loop in the Hippo pathway that establishes a key role for NUAK2 in enforcing the tumor-promoting activities of YAP/TAZ. Our results thus introduce a new opportunity for cancer therapeutics by delineating NUAK2 as a potential target for re-engaging the Hippo pathway. The Hippo pathway is frequently dysregulated in cancer. Here, the authors identify NUAK2 as negative regulator of the Hippo pathway from a siRNA kinome screen and show that NUAK2 promotes YAP/TAZ nuclear localisation while NUAK2 is a transcriptional target of YAP/TAZ, thus providing a feed forward loop to promote tumorigenesis.
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Affiliation(s)
- Mandeep K Gill
- Department of Biochemistry, University of Toronto, Toronto, ON, M5S 1A8, Canada.,Donnelly Centre, University of Toronto, Toronto, ON, M5S 3E1, Canada
| | - Tania Christova
- Department of Biochemistry, University of Toronto, Toronto, ON, M5S 1A8, Canada.,Donnelly Centre, University of Toronto, Toronto, ON, M5S 3E1, Canada
| | - Ying Y Zhang
- Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S 1A8, Canada.,Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada
| | - Alex Gregorieff
- Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada.,Department of Pathology, McGill University and Research Institute of the McGill University Health Center, Montreal, H4A 3J1, QC, Canada
| | - Liang Zhang
- Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada.,Department of Biomedical Sciences, College of Veterinary Medicine and Life Sciences, City University of Hong Kong, 999077, Hong Kong, China.,City University of Hong Kong Shenzhen Research Institute, Shenzhen, Guangdong, 518057, China
| | - Masahiro Narimatsu
- Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada
| | - Siyuan Song
- Department of Biochemistry, University of Toronto, Toronto, ON, M5S 1A8, Canada.,Donnelly Centre, University of Toronto, Toronto, ON, M5S 3E1, Canada
| | - Shawn Xiong
- Department of Biochemistry, University of Toronto, Toronto, ON, M5S 1A8, Canada.,Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada
| | - Amber L Couzens
- Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada
| | - Jiefei Tong
- Program in Cell Biology, Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Jonathan R Krieger
- SPARC BioCentre, Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Michael F Moran
- Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S 1A8, Canada.,Program in Cell Biology, Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada.,SPARC BioCentre, Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Alexandre R Zlotta
- Department of Surgery, Division of Urology, University of Toronto, Mount Sinai Hospital and University Health Network, Toronto, M5G 1X5, ON, Canada
| | - Theodorus H van der Kwast
- Department of Pathology, Toronto General Hospital, University Health Network, Toronto, ON, M5G 2C4, Canada
| | - Anne-Claude Gingras
- Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S 1A8, Canada.,Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada
| | - Frank Sicheri
- Department of Biochemistry, University of Toronto, Toronto, ON, M5S 1A8, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S 1A8, Canada.,Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada
| | - Jeffrey L Wrana
- Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S 1A8, Canada.,Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada
| | - Liliana Attisano
- Department of Biochemistry, University of Toronto, Toronto, ON, M5S 1A8, Canada. .,Donnelly Centre, University of Toronto, Toronto, ON, M5S 3E1, Canada.
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28
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Abstract
Yes-associated protein (YAP) and transcriptional coactivator with PDZ-binding motif (TAZ) are two homologous transcriptional coactivators that promote cell proliferation, stem cell maintenance, and tissue homeostasis. Under favorable conditions, YAP and TAZ are active to promote cell growth through a transcriptional program mediated by the TEAD family transcription factors. Given the indispensability of cellular energy and metabolites for survival and growth, YAP and TAZ are inhibited when energy level is low. Indeed, glucose, fatty acids, hormones, and other metabolic factors have been recently revealed to regulate YAP and TAZ. Conversely, YAP and TAZ are also involved in metabolism regulation, such as to promote glycolysis, lipogenesis, and glutaminolysis, suggesting YAP and TAZ as emerging nodes in coordinating nutrient availability with cell growth and tissue homeostasis. In this Review, we summarize recent findings and provide a current overview of YAP and TAZ in metabolism by focusing on the role of YAP and TAZ as integrators for metabolic cues and cell growth.
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Affiliation(s)
- Ja Hyun Koo
- Department of Pharmacology and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Kun-Liang Guan
- Department of Pharmacology and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA.
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29
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YAP/TAZ upstream signals and downstream responses. Nat Cell Biol 2018; 20:888-899. [PMID: 30050119 DOI: 10.1038/s41556-018-0142-z] [Citation(s) in RCA: 574] [Impact Index Per Article: 95.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 06/14/2018] [Indexed: 02/06/2023]
Abstract
Cell behaviour is strongly influenced by physical, mechanical contacts between cells and their extracellular matrix. We review how the transcriptional regulators YAP and TAZ integrate mechanical cues with the response to soluble signals and metabolic pathways to control multiple aspects of cell behaviour, including proliferation, cell plasticity and stemness essential for tissue regeneration. Corruption of cell-environment interplay leads to aberrant YAP and TAZ activation that is instrumental for multiple diseases, including cancer.
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30
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Moon S, Yeon Park S, Woo Park H. Regulation of the Hippo pathway in cancer biology. Cell Mol Life Sci 2018; 75:2303-2319. [PMID: 29602952 PMCID: PMC11105795 DOI: 10.1007/s00018-018-2804-1] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 03/17/2018] [Accepted: 03/22/2018] [Indexed: 01/23/2023]
Abstract
The Hippo tumor suppressor pathway, which is well conserved from Drosophila to humans, has emerged as the master regulator of organ size, as well as major cellular properties, such as cell proliferation, survival, stemness, and tissue homeostasis. The biological significance and deregulation of the Hippo pathway in tumorigenesis have received a surge of interest in the past decade. In the current review, we present the major discoveries that made substantial contributions to our understanding of the Hippo pathway and discuss how Hippo pathway components contribute to cellular signaling, physiology, and their potential implications in anticancer therapeutics.
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Affiliation(s)
- Sungho Moon
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - So Yeon Park
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Hyun Woo Park
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea.
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31
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Fulford A, Tapon N, Ribeiro PS. Upstairs, downstairs: spatial regulation of Hippo signalling. Curr Opin Cell Biol 2018; 51:22-32. [PMID: 29154163 DOI: 10.1016/j.ceb.2017.10.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 10/13/2017] [Indexed: 12/31/2022]
Abstract
Cellular signalling lies at the heart of every decision involved in the development and homeostasis of multicellular organisms. The Hippo pathway was discovered nearly two decades ago through seminal work in Drosophila and rapidly emerged as a crucial signalling network implicated in developmental and oncogenic growth, tissue regeneration and stem cell biology. Here, we review recent advances in the field relating to the upstream regulation of Hippo signalling and the intracellular tug-of-war that tightly controls its main target, the transcriptional co-activator Yorkie/YAP.
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Affiliation(s)
- Alexander Fulford
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Nicolas Tapon
- The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK.
| | - Paulo S Ribeiro
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK.
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32
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Fu V, Plouffe SW, Guan KL. The Hippo pathway in organ development, homeostasis, and regeneration. Curr Opin Cell Biol 2018; 49:99-107. [PMID: 29316535 DOI: 10.1016/j.ceb.2017.12.012] [Citation(s) in RCA: 152] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 12/05/2017] [Accepted: 12/16/2017] [Indexed: 12/12/2022]
Abstract
The Hippo pathway is a universal governor of organ size, tissue homeostasis, and regeneration. A growing body of work has advanced our understanding of Hippo pathway regulation of cell proliferation, differentiation, and spatial patterning not only in organ development but also upon injury-induced regeneration. The pathway's central role in stem cell biology thus implicates its potential for therapeutic manipulation in mammalian organ regeneration. In this review, we survey recent literature linking the Hippo pathway to the development, homeostasis, and regeneration of various organs, including Hippo-independent roles for YAP, defined here as YAP functions that are not regulated by the Hippo pathway kinases LATS1/2.
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Affiliation(s)
- Vivian Fu
- Department of Pharmacology and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, United States
| | - Steven W Plouffe
- Department of Pharmacology and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, United States
| | - Kun-Liang Guan
- Department of Pharmacology and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, United States.
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33
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Xie L, Mao M, Xiong K, Jiang B. Circular RNAs: A Novel Player in Development and Disease of the Central Nervous System. Front Cell Neurosci 2017; 11:354. [PMID: 29167634 PMCID: PMC5682331 DOI: 10.3389/fncel.2017.00354] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/25/2017] [Indexed: 01/09/2023] Open
Abstract
Circular RNAs (circRNAs) own unique capabilities to communicate with nucleic acids and ribonucleoproteins and are emerging as indispensable compositions of the regulatory messages encoded in the genome. Due to lack of 3′ termini, circRNAs are more resistant to degradation by exonuclease RNase R and possess greater stability than linear RNAs. Moreover, circRNAs can act as microRNA (miRNA) sponge and affect messenger RNA (mRNA) splicing and transcription. By virtue of their great stability and elaborate regulatory mechanisms of gene expression, circRNAs play important roles in certain physiological activities. The development, homeostasis and stress response of the central nervous system (CNS) depend upon precise temporal and spatial regulation of gene networks. Moreover, emerging evidence has revealed that circRNAs are spatiotemporally regulated and dynamically expressed during brain development; therefore, they can exert significant influences on CNS development and diseases. In this review, we highlight the biogenesis of circRNAs and their central roles in regulation of CNS development and diseases.
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Affiliation(s)
- Lili Xie
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Mao Mao
- Departments of Ophthalmology and Anatomy, Institute for Human Genetics, UCSF School of Medicine, San Francisco, CA, United States
| | - Kun Xiong
- Department of Human Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Bing Jiang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
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34
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Zheng X, Han H, Liu GP, Ma YX, Pan RL, Sang LJ, Li RH, Yang LJ, Marks JR, Wang W, Lin A. LncRNA wires up Hippo and Hedgehog signaling to reprogramme glucose metabolism. EMBO J 2017; 36:3325-3335. [PMID: 28963395 DOI: 10.15252/embj.201797609] [Citation(s) in RCA: 134] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/29/2017] [Accepted: 09/01/2017] [Indexed: 12/25/2022] Open
Abstract
The Hippo pathway plays essential roles in organ size control and cancer prevention via restricting its downstream effector, Yes-associated protein (YAP). Previous studies have revealed an oncogenic function of YAP in reprogramming glucose metabolism, while the underlying mechanism remains to be fully clarified. Accumulating evidence suggests long noncoding RNAs (lncRNAs) as attractive therapeutic targets, given their roles in modulating various cancer-related signaling pathways. In this study, we report that lncRNA breast cancer anti-estrogen resistance 4 (BCAR4) is required for YAP-dependent glycolysis. Mechanistically, YAP promotes the expression of BCAR4, which subsequently coordinates the Hedgehog signaling to enhance the transcription of glycolysis activators HK2 and PFKFB3. Therapeutic delivery of locked nucleic acids (LNAs) targeting BCAR4 attenuated YAP-dependent glycolysis and tumor growth. The expression levels of BCAR4 and YAP are positively correlated in tissue samples from breast cancer patients, where high expression of both BCAR4 and YAP is associated with poor patient survival outcome. Taken together, our study not only reveals the mechanism by which YAP reprograms glucose metabolism, but also highlights the therapeutic potential of targeting YAP-BCAR4-glycolysis axis for breast cancer treatment.
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Affiliation(s)
- Xin Zheng
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Han Han
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, USA
| | - Guang-Ping Liu
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yan-Xiu Ma
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Ruo-Lang Pan
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Ling-Jie Sang
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Rui-Hua Li
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Luo-Jia Yang
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jeffrey R Marks
- Division of Surgical Science, Department of Surgery, School of Medicine, Duke University, Durham, NC, USA
| | - Wenqi Wang
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, USA
| | - Aifu Lin
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
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35
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Berberine and cinnamaldehyde together prevent lung carcinogenesis. Oncotarget 2017; 8:76385-76397. [PMID: 29100319 PMCID: PMC5652713 DOI: 10.18632/oncotarget.20059] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 07/26/2017] [Indexed: 12/14/2022] Open
Abstract
Starving tumor cells by restricting nutrient sources is a promising strategy for combating cancer. Because both berberine and cinnamaldehyde can activate AMP-activated protein kinase (AMPK, a sensor of cellular energy status), we investigated whether the combination of berberine and cinnamaldehyde could synergistically prevent lung carcinogenesis through tumor cell starvation. Urethane treatment induced lung carcinogenesis in mice, downregulated AMPK and mammalian target of rapamycin (mTOR) while upregulating aquaporin-1 (AQP-1) and nuclear factor kappa B (NF-κB). Together, berberine and cinnamaldehyde reduced mouse susceptibility to urethane-induced lung carcinogenesis, and reversed the urethane-induced AMPK, mTOR, AQP-1, and NF-κB expression patterns. In vitro, berberine and cinnamaldehyde together induced A549 cell apoptosis, prevented cell proliferation, autophagy, and wound healing, upregulated AMPK, and downregulated AQP-1. The effects of the combined treatment were reduced by rapamycin (a mTOR inhibitor) or HgCL2 (an AQP inhibitor), but not Z-VAD-FMK (a caspase inhibitor). The berberine/cinnamaldehyde combination also prevented A549 cell substance permeability and decreased intracellular ATP concentrations. These results suggest the combination of berberine and cinnamaldehyde limited both primary and adaptive nutrient acquisition by lung tumors via AMPK-reduced AQP-1 expression, which ultimately starved the tumor cells.
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36
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Mo JS. The role of extracellular biophysical cues in modulating the Hippo-YAP pathway. BMB Rep 2017; 50:71-78. [PMID: 27916025 PMCID: PMC5342869 DOI: 10.5483/bmbrep.2017.50.2.199] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Indexed: 12/14/2022] Open
Abstract
The Hippo signaling pathway plays an essential role in adult-tissue homeostasis and organ-size control. In Drosophila and vertebrates, it consists of a highly conserved kinase cascade, which involves MST and Lats that negatively regulate the activity of the downstream transcription coactivators, YAP and TAZ. By interacting with TEADs and other transcription factors, they mediate both proliferative and antiapoptotic gene expression and thus regulate tissue repair and regeneration. Dysregulation or mutation of the Hippo pathway is linked to tumorigenesis and cancer development. Recent studies have uncovered multiple upstream inputs, including cell density, mechanical stress, G-protein-coupled receptor (GPCR) signaling, and nutrients, that modulate Hippo pathway activity. This review focuses on the role of the Hippo pathway as effector of these biophysical cues and its potential implications in tissue homeostasis and cancer.
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Affiliation(s)
- Jung-Soon Mo
- Genomic Instability Research Center (GIRC), Ajou University School of Medicine, Suwon 16499, Korea
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37
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Tissue growth and tumorigenesis in Drosophila: cell polarity and the Hippo pathway. Curr Opin Cell Biol 2017; 48:1-9. [PMID: 28364663 DOI: 10.1016/j.ceb.2017.03.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 03/07/2017] [Accepted: 03/10/2017] [Indexed: 12/17/2022]
Abstract
Cell polarity regulation is critical for defining membrane domains required for the establishment and maintenance of the apical-basal axis in epithelial cells (apico-basal polarity), asymmetric cell divisions, planar organization of tissues (planar cell polarity), and the formation of the front-rear axis in cell migration (front-rear polarity). In the vinegar fly, Drosophila melanogaster, cell polarity regulators also interact with the Hippo tissue growth control signaling pathway. In this review we survey the recent Drosophila literature linking cell polarity regulators with the Hippo pathway in epithelial tissue growth, neural stem cell asymmetric divisions and in cell migration in physiological and tumorigenic settings.
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38
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Zanconato F, Cordenonsi M, Piccolo S. YAP/TAZ at the Roots of Cancer. Cancer Cell 2016; 29:783-803. [PMID: 27300434 PMCID: PMC6186419 DOI: 10.1016/j.ccell.2016.05.005] [Citation(s) in RCA: 1267] [Impact Index Per Article: 158.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 04/26/2016] [Accepted: 05/16/2016] [Indexed: 02/06/2023]
Abstract
YAP and TAZ are highly related transcriptional regulators pervasively activated in human malignancies. Recent work indicates that, remarkably, YAP/TAZ are essential for cancer initiation or growth of most solid tumors. Their activation induces cancer stem cell attributes, proliferation, chemoresistance, and metastasis. YAP/TAZ are sensors of the structural and mechanical features of the cell microenvironment. A number of cancer-associated extrinsic and intrinsic cues conspire to overrule the YAP-inhibiting microenvironment of normal tissues, including changes in mechanotransduction, inflammation, oncogenic signaling, and regulation of the Hippo pathway. Addiction to YAP/TAZ thus potentially represents a central cancer vulnerability that may be exploited therapeutically.
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Affiliation(s)
- Francesca Zanconato
- Department of Molecular Medicine, University of Padua School of Medicine, viale Colombo 3, 35126 Padua, Italy
| | - Michelangelo Cordenonsi
- Department of Molecular Medicine, University of Padua School of Medicine, viale Colombo 3, 35126 Padua, Italy.
| | - Stefano Piccolo
- Department of Molecular Medicine, University of Padua School of Medicine, viale Colombo 3, 35126 Padua, Italy.
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39
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[Calcitonin gene-related peptide-induced osteogenic differentiation of mouse bone marrow stromal cells through Hippo pathway in vitro]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2016; 34. [PMID: 27526455 PMCID: PMC7030828 DOI: 10.7518/hxkq.2016.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Previous studies have clarified that calcitonin gene-related peptide (CGRP) can promote the biologi- cal activity of osteoblasts. To further reveal the role of CGRP in bone repair, we studied its influence on osteogenic differentia- tion of mouse bone marrow stromal cells (BMSCs) and initially explored the effect of the Hippo signaling pathway with this process. METHODS BMSCs were induced to osteogenic differentiate osteoblasts by different concentrations of CGRP for a screening of the optimal concentration. CGRP was added in BMSCs, then the activity of alkaline phosphatase (ALP) and the number of mineralized nodules were examined by specific ALP kits after 48 hours and alizarin red staining fluid after 7 days, respectively. The protein expression of p-Mst1/2 was measured by Western blot. Verteporfin was used to block the downstream Yap signaling. The mRNA expression of collagen type I (Col I) and runt-related transcription factor 2 (Runx2) were detected by reverse transcription-polymerase chain reaction. RESULTS Compared to the blank group, different concentrations of CGRP (10⁻⁹, 10⁻⁸, 10⁻⁷ mol · L⁻¹), especially 10⁻⁸ mol · L⁻¹, significantly increased the ALP activity of BMSCs (P < 0.05). Alizarin red staining also showed more mineralized nodules in 10⁻⁸ mol · L⁻¹ group. The expression of p-Mst1/2 increased in the CGRP group (P < 0.05). Verteporfin treatment effectively decreased the mRNA expression of Runx2 and Col I (P < 0.05). CONCLUSION The Hippo signaling pathway plays a role in CGRP-induced osteogenic differentiation in mouse BMSCs.
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40
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Abstract
In this review, Meng et al. focus on recent developments in our understanding of the molecular actions of the core Hippo kinase cascade and discuss key open questions in Hippo pathway regulation and function. The Hippo pathway was initially identified in Drosophila melanogaster screens for tissue growth two decades ago and has been a subject extensively studied in both Drosophila and mammals in the last several years. The core of the Hippo pathway consists of a kinase cascade, transcription coactivators, and DNA-binding partners. Recent studies have expanded the Hippo pathway as a complex signaling network with >30 components. This pathway is regulated by intrinsic cell machineries, such as cell–cell contact, cell polarity, and actin cytoskeleton, as well as a wide range of signals, including cellular energy status, mechanical cues, and hormonal signals that act through G-protein-coupled receptors. The major functions of the Hippo pathway have been defined to restrict tissue growth in adults and modulate cell proliferation, differentiation, and migration in developing organs. Furthermore, dysregulation of the Hippo pathway leads to aberrant cell growth and neoplasia. In this review, we focus on recent developments in our understanding of the molecular actions of the core Hippo kinase cascade and discuss key open questions in the regulation and function of the Hippo pathway.
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Affiliation(s)
- Zhipeng Meng
- Department of Pharmacology, Moores Cancer Center, University of California at San Diego, La Jolla, California 92093, USA
| | - Toshiro Moroishi
- Department of Pharmacology, Moores Cancer Center, University of California at San Diego, La Jolla, California 92093, USA
| | - Kun-Liang Guan
- Department of Pharmacology, Moores Cancer Center, University of California at San Diego, La Jolla, California 92093, USA
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Becker H, Renner S, Technau GM, Berger C. Cell-Autonomous and Non-cell-autonomous Function of Hox Genes Specify Segmental Neuroblast Identity in the Gnathal Region of the Embryonic CNS in Drosophila. PLoS Genet 2016; 12:e1005961. [PMID: 27015425 PMCID: PMC4807829 DOI: 10.1371/journal.pgen.1005961] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 03/04/2016] [Indexed: 12/12/2022] Open
Abstract
During central nervous system (CNS) development neural stem cells (Neuroblasts, NBs) have to acquire an identity appropriate to their location. In thoracic and abdominal segments of Drosophila, the expression pattern of Bithorax-Complex Hox genes is known to specify the segmental identity of NBs prior to their delamination from the neuroectoderm. Compared to the thoracic, ground state segmental units in the head region are derived to different degrees, and the precise mechanism of segmental specification of NBs in this region is still unclear. We identified and characterized a set of serially homologous NB-lineages in the gnathal segments and used one of them (NB6-4 lineage) as a model to investigate the mechanism conferring segment-specific identities to gnathal NBs. We show that NB6-4 is primarily determined by the cell-autonomous function of the Hox gene Deformed (Dfd). Interestingly, however, it also requires a non-cell-autonomous function of labial and Antennapedia that are expressed in adjacent anterior or posterior compartments. We identify the secreted molecule Amalgam (Ama) as a downstream target of the Antennapedia-Complex Hox genes labial, Dfd, Sex combs reduced and Antennapedia. In conjunction with its receptor Neurotactin (Nrt) and the effector kinase Abelson tyrosine kinase (Abl), Ama is necessary in parallel to the cell-autonomous Dfd pathway for the correct specification of the maxillary identity of NB6-4. Both pathways repress CyclinE (CycE) and loss of function of either of these pathways leads to a partial transformation (40%), whereas simultaneous mutation of both pathways leads to a complete transformation (100%) of NB6-4 segmental identity. Finally, we provide genetic evidences, that the Ama-Nrt-Abl-pathway regulates CycE expression by altering the function of the Hippo effector Yorkie in embryonic NBs. The disclosure of a non-cell-autonomous influence of Hox genes on neural stem cells provides new insight into the process of segmental patterning in the developing CNS. The central nervous system (CNS) needs to be subdivided into functionally specified regions. In the developing CNS of Drosophila, each neural stem cell, called neuroblasts (NB), acquires a unique identity according to its anterior-posterior and dorso-ventral position to generate a specific cell lineage. Along the anterior-posterior body axis, Hox genes of the Bithorax-Complex convey segmental identities to NBs in the trunk segments. In the derived gnathal and brain segments, the mechanisms specifying segmental NB identities are largely unknown. We investigated the role of Hox genes of the Antennapedia-Complex in the gnathal CNS. In addition to cell-autonomous Hox gene function, we unexpectedly uncovered a parallel non-cell-autonomous pathway in mediating segmental specification of embryonic NBs in gnathal segments. Both pathways restrict the expression of the cell cycle gene CyclinE, ensuring the proper specification of a glial cell lineage. Whereas the Hox gene Deformed mediates this cell-autonomously, labial and Antennapedia influence the identity via transcriptional regulation of the secreted molecule Amalgam (and its downstream pathway) in a non-cell-autonomous manner. These findings shed new light on the role of the highly conserved Hox genes during segmental patterning of neural stem cells in the CNS.
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Affiliation(s)
- Henrike Becker
- Institute of Genetics, University of Mainz, Mainz, Germany
| | - Simone Renner
- Institute of Genetics, University of Mainz, Mainz, Germany
| | - Gerhard M. Technau
- Institute of Genetics, University of Mainz, Mainz, Germany
- * E-mail: (CB); (GMT)
| | - Christian Berger
- Institute of Genetics, University of Mainz, Mainz, Germany
- * E-mail: (CB); (GMT)
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Poon CLC, Mitchell KA, Kondo S, Cheng LY, Harvey KF. The Hippo Pathway Regulates Neuroblasts and Brain Size in Drosophila melanogaster. Curr Biol 2016; 26:1034-42. [PMID: 26996505 DOI: 10.1016/j.cub.2016.02.009] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Revised: 12/22/2015] [Accepted: 02/02/2016] [Indexed: 12/12/2022]
Abstract
A key question in developmental neurobiology is how neural stem cells regulate their proliferative potential and cellular diversity and thus specify the overall size of the brain. Drosophila melanogaster neural stem cells (neuroblasts) are known to regulate their ability to self-renew by asymmetric cell division and produce different types of neurons and glia through sequential expression of temporal transcription factors [1]. Here, we show that the conserved Hippo pathway, a key regulator of epithelial organ size [2-4], restricts neuroblast proliferative potential and neuronal cell number to regulate brain size. The inhibition of Hippo pathway activity via depletion of the core kinases Tao-1, Hippo, or Warts regulates several key characteristics of neuroblasts during postembryonic neurogenesis. The Hippo pathway is required to maintain timely entry and exit from neurogenesis by regulating both neuroblast reactivation from quiescence and the time at which neuroblasts undergo terminal differentiation. Further, it restricts neuroblast cell-cycle speed, specifies cell size, and alters the proportion of neuron types generated during postembryonic neurogenesis. Collectively, deregulation of Hippo signaling in neuroblasts causes a substantial increase in overall brain size. We show that these effects are mediated via the key downstream transcription co-activator Yorkie and that, indeed, Yorkie overexpression in neuroblasts is sufficient to cause brain overgrowth. These studies reveal a novel mechanism that controls stem cell proliferative potential during postembryonic neurogenesis to regulate brain size.
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Affiliation(s)
- Carole L C Poon
- Peter MacCallum Cancer Centre, 7 St Andrews Place, East Melbourne, VIC 3002, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Katrina A Mitchell
- Peter MacCallum Cancer Centre, 7 St Andrews Place, East Melbourne, VIC 3002, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Shu Kondo
- Laboratory of Invertebrate Genetics, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka, Japan
| | - Louise Y Cheng
- Peter MacCallum Cancer Centre, 7 St Andrews Place, East Melbourne, VIC 3002, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC 3010, Australia; Department of Pathology, University of Melbourne, Parkville, VIC 3010, Australia.
| | - Kieran F Harvey
- Peter MacCallum Cancer Centre, 7 St Andrews Place, East Melbourne, VIC 3002, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC 3010, Australia; Department of Pathology, University of Melbourne, Parkville, VIC 3010, Australia.
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43
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Yu FX, Zhao B, Guan KL. Hippo Pathway in Organ Size Control, Tissue Homeostasis, and Cancer. Cell 2016; 163:811-28. [PMID: 26544935 DOI: 10.1016/j.cell.2015.10.044] [Citation(s) in RCA: 1537] [Impact Index Per Article: 192.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Indexed: 12/16/2022]
Abstract
Two decades of studies in multiple model organisms have established the Hippo pathway as a key regulator of organ size and tissue homeostasis. By inhibiting YAP and TAZ transcription co-activators, the Hippo pathway regulates cell proliferation, apoptosis, and stemness in response to a wide range of extracellular and intracellular signals, including cell-cell contact, cell polarity, mechanical cues, ligands of G-protein-coupled receptors, and cellular energy status. Dysregulation of the Hippo pathway exerts a significant impact on cancer development. Further investigation of the functions and regulatory mechanisms of this pathway will help uncovering the mystery of organ size control and identify new targets for cancer treatment.
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Affiliation(s)
- Fa-Xing Yu
- Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.
| | - Bin Zhao
- Life Sciences Institute and Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Kun-Liang Guan
- Department of Pharmacology and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA.
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Santinon G, Pocaterra A, Dupont S. Control of YAP/TAZ Activity by Metabolic and Nutrient-Sensing Pathways. Trends Cell Biol 2015; 26:289-299. [PMID: 26750334 DOI: 10.1016/j.tcb.2015.11.004] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 11/17/2015] [Accepted: 11/30/2015] [Indexed: 12/26/2022]
Abstract
Metabolism is a fundamental cellular function that can be reprogrammed by signaling pathways and oncogenes to meet cellular requirements. An emerging paradigm is that signaling and transcriptional networks can be in turn regulated by metabolism, allowing cells to coordinate their metabolism and behavior in an integrated manner. The activity of the YAP/TAZ transcriptional coactivators, downstream transducers of the Hippo cascade and powerful pro-oncogenic factors, was recently found to be regulated by metabolic pathways, such as aerobic glycolysis and mevalonate synthesis, and by the nutrient-sensing LKB1-AMPK and TSC-mTOR pathways. We discuss here current data linking YAP/TAZ to metabolism and suggest how this coupling might coordinate nutrient availability with genetic programs that sustain tissue growth, neoplastic cell proliferation, and tumor malignancy.
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Affiliation(s)
- Giulia Santinon
- Department of Molecular Medicine, University of Padua Medical School, Padua, Italy
| | - Arianna Pocaterra
- Department of Molecular Medicine, University of Padua Medical School, Padua, Italy
| | - Sirio Dupont
- Department of Molecular Medicine, University of Padua Medical School, Padua, Italy.
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