1
|
Hu T, Liu L, Wang H, Yang M, Xu B, Xie H, Lin Z, Jin X, Wang P, Liu Y, Sun H, Liu S. RCAN family member 3 deficiency contributes to noncompaction of the ventricular myocardium. J Genet Genomics 2024; 51:543-553. [PMID: 38181896 DOI: 10.1016/j.jgg.2023.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 12/28/2023] [Indexed: 01/07/2024]
Abstract
Noncompaction of the ventricular myocardium (NVM), the third most diagnosed cardiomyopathy, is characterized by prominent trabeculae and intratrabecular recesses. However, the genetic etiology of 40%-60% of NVM cases remains unknown. Here, we identify two infants with NVM, in a nonconsanguineous family, with a typical clinical presentation of persistent bradycardia since the prenatal period. A homozygous missense variant (R223L) of RCAN family member 3 (RCAN3) is detected in both infants using whole-exome sequencing. In the zebrafish model, marked cardiac dysfunction is detected in rcan3 deficiency (MO-rcan3ATG-injected) and rcan-/- embryos. Developmental dysplasia of both endocardial and myocardial layers is also detected in rcan3-deficient embryos. RCAN3 R223L variant mRNAs can not rescue heart defects caused by rcan3 knockdown or knockout; however, hRCAN3 mRNAs rescue these phenotypes. RNA-seq experiments show that several genes involved in cardiomyopathies are significantly regulated through multiple signaling pathways in the rcan3-knockdown zebrafish model. In human cardiomyocytes, RCAN3 deficiency results in reduced proliferation and increased apoptosis, together with an abnormal mitochondrial ultrastructure. Thus, we suggest that RCAN3 is a susceptibility gene for cardiomyopathies, especially NVM and that the R223L mutation is a potential loss-of-function variant.
Collapse
Affiliation(s)
- Ting Hu
- Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China
| | - Lan Liu
- Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Medical College, Tibet University, Lhasa, Tibet 850000, China
| | - He Wang
- Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China
| | - Mei Yang
- Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China
| | - Bocheng Xu
- Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China
| | - Hanbing Xie
- Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China
| | - Ziyuan Lin
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China; SCU-CUHK Joint Laboratory for Reproductive Medicine, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xiaolei Jin
- Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China; West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, China
| | - Ping Wang
- Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China
| | - Yanyan Liu
- Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China
| | - Huaqin Sun
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China; SCU-CUHK Joint Laboratory for Reproductive Medicine, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Shanling Liu
- Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan 610041, China.
| |
Collapse
|
2
|
Lee SK, Ahnn J. Regulator of Calcineurin (RCAN): Beyond Down Syndrome Critical Region. Mol Cells 2020; 43:671-685. [PMID: 32576715 PMCID: PMC7468584 DOI: 10.14348/molcells.2020.0060] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/23/2020] [Accepted: 05/25/2020] [Indexed: 12/19/2022] Open
Abstract
The regulator of calcineurin (RCAN) was first reported as a novel gene called DSCR1, encoded in a region termed the Down syndrome critical region (DSCR) of human chromosome 21. Genome sequence comparisons across species using bioinformatics revealed three members of the RCAN gene family, RCAN1, RCAN2, and RCAN3, present in most jawed vertebrates, with one member observed in most invertebrates and fungi. RCAN is most highly expressed in brain and striated muscles, but expression has been reported in many other tissues, as well, including the heart and kidneys. Expression levels of RCAN homologs are responsive to external stressors such as reactive oxygen species, Ca2+, amyloid β, and hormonal changes and upregulated in pathological conditions, including Alzheimer's disease, cardiac hypertrophy, diabetes, and degenerative neuropathy. RCAN binding to calcineurin, a Ca2+/calmodulin-dependent phosphatase, inhibits calcineurin activity, thereby regulating different physiological events via dephosphorylation of important substrates. Novel functions of RCANs have recently emerged, indicating involvement in mitochondria homeostasis, RNA binding, circadian rhythms, obesity, and thermogenesis, some of which are calcineurin-independent. These developments suggest that besides significant contributions to DS pathologies and calcineurin regulation, RCAN is an important participant across physiological systems, suggesting it as a favorable therapeutic target.
Collapse
Affiliation(s)
- Sun-Kyung Lee
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
- Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Joohong Ahnn
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
- Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
| |
Collapse
|
3
|
Canedo-Antelo M, Serrano MP, Manterola A, Ruiz A, Llavero F, Mato S, Zugaza JL, Pérez-Cerdá F, Matute C, Sánchez-Gómez MV. Inhibition of Casein Kinase 2 Protects Oligodendrocytes From Excitotoxicity by Attenuating JNK/p53 Signaling Cascade. Front Mol Neurosci 2018; 11:333. [PMID: 30271323 PMCID: PMC6146035 DOI: 10.3389/fnmol.2018.00333] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 08/27/2018] [Indexed: 12/12/2022] Open
Abstract
Oligodendrocytes are highly vulnerable to glutamate excitotoxicity, a central mechanism involved in tissue damage in Multiple Sclerosis (MS). Sustained activation of AMPA receptors in rat oligodendrocytes induces cytosolic calcium overload, mitochondrial depolarization, increase of reactive oxygen species, and activation of intracelular pathways resulting in apoptotic cell death. Although many signals driven by excitotoxicity have been identified, some of the key players are still under investigation. Casein kinase 2 (CK2) is a serine/threonine kinase, constitutively expressed in all eukaryotic tissues, involved in cell proliferation, malignant transformation and apoptosis. In this study, we identify CK2 as a critical regulator of oligodendrocytic death pathways and elucidate its role as a signal inductor following excitotoxic insults. We provide evidence that CK2 activity is up-regulated in AMPA-treated oligodendrocytes and CK2 inhibition significantly diminished AMPA receptor-induced oligodendroglial death. In addition, we analyzed mitogen-activated protein kinase (MAPK) signaling after excitotoxic insult. We observed that AMPA receptor activation induced a rapid increase in c-Jun N-terminal kinase (JNK) and p38 phosphorylation that was reduced after CK2 inhibition. Moreover, blocking their phosphorylation, we enhanced oligodendrocyte survival after excitotoxic insult. Finally, we observed that the tumor suppressor p53 is activated during AMPA receptor-induced cell death and, interestingly, down-regulated by JNK or CK2 inhibition. Together, these data indicate that the increase in CK2 activity induced by excitotoxic insults regulates MAPKs, triggers p53 activation and mediates subsequent oligodendroglial loss. Therefore, targeting CK2 may be a useful strategy to prevent oligodendrocyte death in MS and other diseases involving central nervous system (CNS) white matter.
Collapse
Affiliation(s)
- Manuel Canedo-Antelo
- Achucarro Basque Center for Neuroscience, Leioa, Spain.,Departamento de Neurociencias, Universidad del País Vasco (UPV/EHU), Leioa, Spain.,Centro de Investigación en Red de Enfermedades Neurodegenerativas (CIBERNED), Leioa, Spain
| | - Mari Paz Serrano
- Achucarro Basque Center for Neuroscience, Leioa, Spain.,Departamento de Neurociencias, Universidad del País Vasco (UPV/EHU), Leioa, Spain.,Centro de Investigación en Red de Enfermedades Neurodegenerativas (CIBERNED), Leioa, Spain
| | - Andrea Manterola
- Achucarro Basque Center for Neuroscience, Leioa, Spain.,Departamento de Neurociencias, Universidad del País Vasco (UPV/EHU), Leioa, Spain.,Centro de Investigación en Red de Enfermedades Neurodegenerativas (CIBERNED), Leioa, Spain
| | - Asier Ruiz
- Achucarro Basque Center for Neuroscience, Leioa, Spain.,Departamento de Neurociencias, Universidad del País Vasco (UPV/EHU), Leioa, Spain.,Centro de Investigación en Red de Enfermedades Neurodegenerativas (CIBERNED), Leioa, Spain
| | - Francisco Llavero
- Achucarro Basque Center for Neuroscience, Leioa, Spain.,Departamento de Genética, Antropología Física y Fisiología Animal, Universidad del País Vasco (UPV/EHU), Leioa, Spain
| | - Susana Mato
- Achucarro Basque Center for Neuroscience, Leioa, Spain.,Departamento de Neurociencias, Universidad del País Vasco (UPV/EHU), Leioa, Spain.,Centro de Investigación en Red de Enfermedades Neurodegenerativas (CIBERNED), Leioa, Spain
| | - José Luis Zugaza
- Achucarro Basque Center for Neuroscience, Leioa, Spain.,Departamento de Genética, Antropología Física y Fisiología Animal, Universidad del País Vasco (UPV/EHU), Leioa, Spain.,IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | - Fernando Pérez-Cerdá
- Achucarro Basque Center for Neuroscience, Leioa, Spain.,Departamento de Neurociencias, Universidad del País Vasco (UPV/EHU), Leioa, Spain.,Centro de Investigación en Red de Enfermedades Neurodegenerativas (CIBERNED), Leioa, Spain
| | - Carlos Matute
- Achucarro Basque Center for Neuroscience, Leioa, Spain.,Departamento de Neurociencias, Universidad del País Vasco (UPV/EHU), Leioa, Spain.,Centro de Investigación en Red de Enfermedades Neurodegenerativas (CIBERNED), Leioa, Spain
| | - María Victoria Sánchez-Gómez
- Achucarro Basque Center for Neuroscience, Leioa, Spain.,Departamento de Neurociencias, Universidad del País Vasco (UPV/EHU), Leioa, Spain.,Centro de Investigación en Red de Enfermedades Neurodegenerativas (CIBERNED), Leioa, Spain
| |
Collapse
|
4
|
Regulator of Calcineurin 3 Ameliorates Autoimmune Arthritis by Suppressing Th17 Cell Differentiation. THE AMERICAN JOURNAL OF PATHOLOGY 2017; 187:2034-2045. [PMID: 28704638 DOI: 10.1016/j.ajpath.2017.05.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/10/2017] [Accepted: 05/15/2017] [Indexed: 01/10/2023]
Abstract
Regulator of calcineurin 3 (RCAN3), an endogenous regulator of the calcineurin-nuclear factor of activated T cells (NFAT) signaling pathway, inhibits the phosphatase activity of calcineurin, the nuclear translocation of NFAT, and the NFAT downstream pathway. To investigate the effects of RCAN3 on T-cell regulatory function and the development and progression of inflammatory arthritis, we studied the effects of RCAN3 transfection on regulation of Th17 cell differentiation in a murine T-lymphoma cell line and primary splenic CD4+ T cells. Overexpression of RCAN3 suppressed Th17 cell differentiation through the down-regulation of RAR receptor orphan receptor γT mRNA and up-regulation of forkhead box P3 mRNA. In mice with collagen-induced arthritis, injection of an RCAN3-overexpression vector controlled arthritis development in vivo. Injection of RCAN3 reduced the formation of osteoclasts and expression of inflammatory cytokines in vivo. Antioxidants stimulated the expression of RCAN3 in vitro, and combination therapy with pcDNA-RCAN3 had a synergistic suppressive effect on the development of arthritis. These data suggest that RCAN3 may be an effective treatment for rheumatoid arthritis.
Collapse
|
5
|
RCAN-11R peptide provides immunosuppression for fully mismatched islet allografts in mice. Sci Rep 2017; 7:3043. [PMID: 28596584 PMCID: PMC5465209 DOI: 10.1038/s41598-017-02934-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 04/20/2017] [Indexed: 12/23/2022] Open
Abstract
Calcineurin inhibitors have been used for transplant therapy. However, the inhibition of calcineurin outside the immune system has a number of side effects. We previously developed a cell-permeable inhibitor of NFAT (nuclear factor of activated T cells) using the polyarginine peptide delivery system. This peptide (11R-VIVIT) selectively interferes with calcineurin-NFAT interaction without affecting the activity of calcineurin phosphatase and provides immunosuppression for fully mismatched islet allografts in mice. However, our recent study showed that 11R-VIVIT affected cell viability in vitro when it was used at higher concentration because of the VIVIT sequence. The aim of this study is to develop a safer NFAT inhibitor (RCAN-11R) that does not affect cell viability, and which is less toxic than calcineurin inhibitors. The minimal sequence of the protein family of regulators of calcineurin (RCAN) that is responsible for the inhibition of calcineurin-NFAT signaling was recently characterized. The peptide could selectively interfere with the calcineurin-NFAT interaction without affecting the activity of calcineurin phosphatase, similar to 11R-VIVIT. RCAN-11R did not affect cell viability when it was used at a higher concentration than the toxic concentration of 11R-VIVIT. RCAN-11R could therefore be useful as a therapeutic agent that is less toxic than current drugs or 11R-VIVIT.
Collapse
|
6
|
Guasch A, Aranguren-Ibáñez Á, Pérez-Luque R, Aparicio D, Martínez-Høyer S, Mulero MC, Serrano-Candelas E, Pérez-Riba M, Fita I. Calcineurin Undergoes a Conformational Switch Evoked via Peptidyl-Prolyl Isomerization. PLoS One 2015; 10:e0134569. [PMID: 26248042 PMCID: PMC4527731 DOI: 10.1371/journal.pone.0134569] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 07/11/2015] [Indexed: 11/19/2022] Open
Abstract
A limited repertoire of PPP family of serine/threonine phosphatases with a highly conserved catalytic domain acts on thousands of protein targets to orchestrate myriad central biological roles. A major structural reorganization of human calcineurin, a ubiquitous Ser/Thr PPP regulated by calcium and calmodulin and targeted by immunosuppressant drugs cyclosporin A and FK506, is unveiled here. The new conformation involves trans- to cis-isomerization of proline in the SAPNY sequence, highly conserved across PPPs, and remodels the main regulatory site where NFATc transcription factors bind. Transitions between cis- and trans-conformations may involve peptidyl prolyl isomerases such as cyclophilin A and FKBP12, which are known to physically interact with and modulate calcineurin even in the absence of immunosuppressant drugs. Alternative conformations in PPPs provide a new perspective on interactions with substrates and other protein partners and may foster development of more specific inhibitors as drug candidates.
Collapse
Affiliation(s)
- Alicia Guasch
- Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Parc Científic, Baldiri Reixac 10, 08028, Barcelona, Spain
| | - Álvaro Aranguren-Ibáñez
- Human Molecular Genetics Laboratory, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Gran Via de L’Hospitalet 199, L’Hospitalet de Llobregat, 08908, Barcelona, Spain
| | - Rosa Pérez-Luque
- Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Parc Científic, Baldiri Reixac 10, 08028, Barcelona, Spain
| | - David Aparicio
- Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Parc Científic, Baldiri Reixac 10, 08028, Barcelona, Spain
| | - Sergio Martínez-Høyer
- Human Molecular Genetics Laboratory, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Gran Via de L’Hospitalet 199, L’Hospitalet de Llobregat, 08908, Barcelona, Spain
| | - M. Carmen Mulero
- Human Molecular Genetics Laboratory, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Gran Via de L’Hospitalet 199, L’Hospitalet de Llobregat, 08908, Barcelona, Spain
| | - Eva Serrano-Candelas
- Human Molecular Genetics Laboratory, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Gran Via de L’Hospitalet 199, L’Hospitalet de Llobregat, 08908, Barcelona, Spain
| | - Mercè Pérez-Riba
- Human Molecular Genetics Laboratory, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Gran Via de L’Hospitalet 199, L’Hospitalet de Llobregat, 08908, Barcelona, Spain
- * E-mail: (IF); (MPR)
| | - Ignacio Fita
- Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Parc Científic, Baldiri Reixac 10, 08028, Barcelona, Spain
- * E-mail: (IF); (MPR)
| |
Collapse
|
7
|
Matsoukas MT, Aranguren-Ibáñez Á, Lozano T, Nunes V, Lasarte JJ, Pardo L, Pérez-Riba M. Identification of small-molecule inhibitors of calcineurin-NFATc signaling that mimic the PxIxIT motif of calcineurin binding partners. Sci Signal 2015; 8:ra63. [PMID: 26106221 DOI: 10.1126/scisignal.2005918] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Calcineurin (CN), a serine and threonine protein phosphatase that depends on Ca(2+) and calmodulin for its activity, is the target of the immunosuppressant drugs cyclosporin A (CsA) and tacrolimus (FK506). CN dephosphorylates and activates members of the NFATc (nuclear factor of activated T cells) family of transcription factors in T cells by binding to their conserved PxIxIT motif. Upon dephosphorylation, NFATc proteins translocate to the nucleus, where they stimulate the expression of genes encoding cytokines and chemokines that are required for T cell proliferation and the immune response. We performed a pharmacophore-based virtual screening of ~5.5 million commercially available, "drug-like" compounds to identify nonpeptidic compounds that inhibited the CN-dependent activation of NFATc signaling and that could serve as potential drug candidates for immunosuppressive therapy. Of 32 compounds that mimicked the PxIxIT motif, 7 competed with NFATc for binding to CN in vitro without interfering with the phosphatase activity of CN. Furthermore, in activated human CD4(+) T cells, four of the seven compounds inhibited the expression of NFATc-dependent genes, cytokine production, and cell proliferation, suggesting that these may have therapeutic potential as immunosuppressive agents.
Collapse
Affiliation(s)
- Minos-Timotheos Matsoukas
- Laboratori de Medicina Computacional, Unitat de Bioestadística, Facultat de Medicina, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Álvaro Aranguren-Ibáñez
- Cellular Signalling Group, Laboratori de Genètica Molecular, Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Spain
| | - Teresa Lozano
- Programa de Inmunología e Inmunoterapia, Centro de Investigación Médica Aplicada - CIMA, Universidad de Navarra, IDISNA, Instituto de Investigación Sanitaria de Navarra, Navarra, Spain
| | - Virginia Nunes
- Laboratori de Genètica Molecular, IDIBELL, U-730, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), and Departament de Ciències Fisiològiques II, Facultat de Medicina, Universitat de Barcelona, 08908 Hospitalet del Llobregat, Spain
| | - Juan José Lasarte
- Programa de Inmunología e Inmunoterapia, Centro de Investigación Médica Aplicada - CIMA, Universidad de Navarra, IDISNA, Instituto de Investigación Sanitaria de Navarra, Navarra, Spain
| | - Leonardo Pardo
- Laboratori de Medicina Computacional, Unitat de Bioestadística, Facultat de Medicina, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
| | - Mercè Pérez-Riba
- Cellular Signalling Group, Laboratori de Genètica Molecular, Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Spain.
| |
Collapse
|
8
|
Fu C, Zhang J, Zheng Y, Xu H, Yu S. Binding of calmodulin changes the calcineurin regulatory region to a less dynamic conformation. Int J Biol Macromol 2015; 79:235-9. [PMID: 25956027 DOI: 10.1016/j.ijbiomac.2015.04.069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 04/28/2015] [Accepted: 04/29/2015] [Indexed: 12/24/2022]
Abstract
Calcineurin (CN) is a Ca(2+)/calmodulin (CaM) activated serine/threonine phosphatase, and its regulatory region (CNRR) plays a critical role in the coupling of Ca(2+) signals to cellular responses. Ca(2+)/CaM binds to the CNRR, resulting in a conformational change that removes an autoinhibitory domain (CN467-486) from the active site of the phosphatase and activates the enzyme. However, almost the entire regulatory region (CN374-521) is not visible in the electron density maps of reported structures. In this study, we produced separate CN fragments corresponding to the CNRR (CNRR381-521, CN residues 381-521) and determined the binding affinity of CNRR381-521 for Ca(2+)/CaM using isothermal titration calorimetry (ITC). The structural change in CNRR381-521 induced by Ca(2+)/CaM binding was also investigated by Fourier transform infrared spectroscopy (FT-IR). The results indicate that Ca(2+)/CaM binding to CNRR381-521 is an exothermic reaction with a dissociation constant of 2.0×10(-6) M. Binding of calmodulin changes the calcineurin regulatory region to a less dynamic conformation.
Collapse
Affiliation(s)
- Cuiping Fu
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Junting Zhang
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Ye Zheng
- Shanghai Pinghe Bilingual School, China
| | - Hongbing Xu
- Department of Clinical Pharmacy, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai 200080, China.
| | - Shaoning Yu
- Department of Chemistry, Fudan University, Shanghai 200433, China.
| |
Collapse
|
9
|
Martínez-Høyer S, Solé-Sánchez S, Aguado F, Martínez-Martínez S, Serrano-Candelas E, Hernández JL, Iglesias M, Redondo JM, Casanovas O, Messeguer R, Pérez-Riba M. A novel role for an RCAN3-derived peptide as a tumor suppressor in breast cancer. Carcinogenesis 2015; 36:792-9. [PMID: 25916653 DOI: 10.1093/carcin/bgv056] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 04/20/2015] [Indexed: 01/29/2023] Open
Abstract
The members of the human regulators of calcineurin (RCAN) protein family are endogenous regulators of the calcineurin (CN)-cytosolic nuclear factor of activated T-cells (NFATc) pathway activation. This function is explained by the presence of a highly conserved calcipressin inhibitor of calcineurin (CIC) motif in RCAN proteins, which has been shown to compete with NFATc for the binding to CN and therefore are able to inhibit NFATc dephosphorylation and activation by CN. Very recently, emerging roles for NFATc proteins in transformation, tumor angiogenesis and metastasis have been described in different cancer cell types. In this work, we report that the overexpression of RCAN3 dramatically inhibits tumor growth and tumor angiogenesis in an orthotopic human breast cancer model. We suggest that RCAN3 exerts these effects in a CN-dependent manner, as mutation of the CIC motif in RCAN3 abolishes the tumor suppressor effect. Moreover, the expression of the EGFP-R3(178-210) peptide, spanning the CIC motif of RCAN3, is able to reproduce all the antitumor effects of RCAN3 full-length protein. Finally, we show that RCAN3 and the EGFP-R3(178-210) peptide inhibit the CN-NFATc signaling pathway and the induction of the NFATc-dependent gene cyclooxygenase-2. Our work suggests that the EGFP-R3(178-210) peptide possess potent tumor suppressor properties and therefore constitutes a novel lead for the development of potent and specific antitumoral agents. Moreover, we propose the targeting of the CN-NFATc pathway in the tumor cells constitutes an effective way to hamper tumor progression by impairing the paracrine network among tumor, endothelial and polymorphonucleated cells.
Collapse
Affiliation(s)
- Sergio Martínez-Høyer
- Cellular Signaling Unit, Human Molecular Genetics Group, Bellvitge Biomedical Research Institute - IDIBELL. L'Hospitalet de Llobregat 08908 Barcelona, Spain
| | - Sònia Solé-Sánchez
- Cellular Signaling Unit, Human Molecular Genetics Group, Bellvitge Biomedical Research Institute - IDIBELL. L'Hospitalet de Llobregat 08908 Barcelona, Spain
| | - Fernando Aguado
- Department of Cell Biology, University of Barcelona, Barcelona, Spain
| | - Sara Martínez-Martínez
- Departamento de Biología Vascular e Inflamación, Centro Nacional de Investigaciones Cardiovasculares, 28029 Madrid, Spain
| | - Eva Serrano-Candelas
- Cellular Signaling Unit, Human Molecular Genetics Group, Bellvitge Biomedical Research Institute - IDIBELL. L'Hospitalet de Llobregat 08908 Barcelona, Spain
| | - José Luis Hernández
- Biomed Division, LEITAT Technological Center, Parc Cientific de Barcelona, Edifici Hèlix, 08028 Barcelona, Spain
| | - Mar Iglesias
- Department of Pathology, Hospital del Mar (Institut Hospital del Mar d'Investigacions Mèdiques), Autonomous University of Barcelona 08004, Barcelona, Spain
| | - Juan Miguel Redondo
- Departamento de Biología Vascular e Inflamación, Centro Nacional de Investigaciones Cardiovasculares, 28029 Madrid, Spain
| | - Oriol Casanovas
- Tumor Angiogenesis Group, Translational Research Laboratory, Catalan Institute of Oncology - Bellvitge Biomedical Research Institute - IDIBELL. L'Hospitalet de Llobregat 08908 Barcelona, Spain
| | - Ramon Messeguer
- Biomed Division, LEITAT Technological Center, Parc Cientific de Barcelona, Edifici Hèlix, 08028 Barcelona, Spain
| | - Mercè Pérez-Riba
- Cellular Signaling Unit, Human Molecular Genetics Group, Bellvitge Biomedical Research Institute - IDIBELL. L'Hospitalet de Llobregat 08908 Barcelona, Spain,
| |
Collapse
|
10
|
Serrano-Candelas E, Alemán-Muench G, Solé-Sánchez S, Aubareda A, Martínez-Høyer S, Adán J, Aranguren-Ibáñez Á, Pritchard MA, Soldevila G, Pérez-Riba M. RCAN 1 and 3 proteins regulate thymic positive selection. Biochem Biophys Res Commun 2015; 460:295-301. [PMID: 25783055 DOI: 10.1016/j.bbrc.2015.03.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 03/06/2015] [Indexed: 01/18/2023]
Abstract
Cooperation between calcineurin (CN)-NFATc and RAF-MEK-ERK signaling pathways is essential in thymocyte positive selection. It is known that the Regulators of Calcineurin (RCAN) proteins can act either facilitating or suppressing CN-dependent signaling events. Here, we show that RCAN genes are expressed in lymphoid tissues, and address the role of RCAN proteins in T cell development. Overexpression of human RCAN3 and RCAN1 can modulate T cell development by increasing positive selection-related surface markers, as well as the "Erk(hi) competence state" in double positive thymocytes, a characteristic molecular signature of positive selection, without affecting CN activity. We also found that RCAN1/3 interact with RAF kinases and CN in a non-exclusive manner. Our data suggests that the balance of RCAN interactions with CN and/or RAF kinases may influence T cell positive selection.
Collapse
Affiliation(s)
- Eva Serrano-Candelas
- Human Molecular Genetics Laboratory, Cell Signaling Unit, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, Barcelona 08908, Spain
| | - Germán Alemán-Muench
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, México DF 04510, Mexico
| | - Sònia Solé-Sánchez
- Human Molecular Genetics Laboratory, Cell Signaling Unit, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, Barcelona 08908, Spain
| | - Anna Aubareda
- Human Molecular Genetics Laboratory, Cell Signaling Unit, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, Barcelona 08908, Spain
| | - Sergio Martínez-Høyer
- Human Molecular Genetics Laboratory, Cell Signaling Unit, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, Barcelona 08908, Spain
| | - Jaume Adán
- LEITAT Technological Center, Biomed Divison, Parc Científic de Barcelona, Barcelona 08028, Spain
| | - Álvaro Aranguren-Ibáñez
- Human Molecular Genetics Laboratory, Cell Signaling Unit, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, Barcelona 08908, Spain
| | - Melanie A Pritchard
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3168, Australia
| | - Gloria Soldevila
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, México DF 04510, Mexico.
| | - Mercè Pérez-Riba
- Human Molecular Genetics Laboratory, Cell Signaling Unit, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, Barcelona 08908, Spain.
| |
Collapse
|
11
|
Juvvadi PR, Ma Y, Richards AD, Soderblom EJ, Moseley MA, Lamoth F, Steinbach WJ. Identification and mutational analyses of phosphorylation sites of the calcineurin-binding protein CbpA and the identification of domains required for calcineurin binding in Aspergillus fumigatus. Front Microbiol 2015; 6:175. [PMID: 25821446 PMCID: PMC4358225 DOI: 10.3389/fmicb.2015.00175] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 02/16/2015] [Indexed: 11/26/2022] Open
Abstract
Calcineurin is a key protein phosphatase required for hyphal growth and virulence in Aspergillus fumigatus, making it an attractive antifungal target. However, currently available calcineurin inhibitors, FK506 and cyclosporine A, are immunosuppressive, limiting usage in the treatment of patients with invasive aspergillosis. Therefore, the identification of endogenous inhibitors of calcineurin belonging to the calcipressin family is an important parallel strategy. We previously identified the gene cbpA as the A. fumigatus calcipressin member and showed its involvement in hyphal growth and calcium homeostasis. However, the mechanism of its activation/inhibition through phosphorylation and its interaction with calcineurin remains unknown. Here we show that A. fumigatus CbpA is phosphorylated at three distinct domains, including the conserved SP repeat motif (phosphorylated domain-I; PD-I), a filamentous fungal-specific domain (PD-II), and the C-terminal CIC motif (Calcipressin Inhibitor of Calcineurin; PD-III). While mutation of three phosphorylated residues (Ser208, Ser217, Ser223) in the PD-II did not affect CbpA function in vivo, mutation of the two phosphorylated serines (Ser156, Ser160) in the SP repeat motif caused reduced hyphal growth and sensitivity to oxidative stress. Mutational analysis in the key domains in calcineurin A (CnaA) and proteomic interaction studies confirmed the requirement of PxIxIT motif-binding residues (352-NIR-354) and the calcineurin B (CnaB)-binding helix residue (V371) for the binding of CbpA to CnaA. Additionally, while the calmodulin-binding residues (442-RVF-444) did not affect CbpA binding to CnaA, three mutations (T359P, H361L, and L365S) clustered between the CnaA catalytic and the CnaB-binding helix were also required for CbpA binding. This is the first study to analyze the phosphorylation status of calcipressin in filamentous fungi and identify the domains required for binding to calcineurin.
Collapse
Affiliation(s)
- Praveen R Juvvadi
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Duke University Medical Center Durham, NC, USA
| | - Yan Ma
- Department of Dermatology and Venereology, The Second Hospital of Shanxi Medical University Taiyuan, Shanxi, China
| | - Amber D Richards
- Department of Dermatology and Venereology, The Second Hospital of Shanxi Medical University Taiyuan, Shanxi, China
| | - Erik J Soderblom
- Department of Dermatology and Venereology, The Second Hospital of Shanxi Medical University Taiyuan, Shanxi, China
| | - M Arthur Moseley
- Duke Proteomics and Metabolomics Core Facility, Center for Genomic and Computational Biology, Duke University Durham, NC, USA
| | - Frédéric Lamoth
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Duke University Medical Center Durham, NC, USA ; Infectious Diseases Service, Department of Medicine, Lausanne University Hospital Lausanne, Switzerland ; Institute of Microbiology, Lausanne University Hospital Lausanne, Switzerland
| | - William J Steinbach
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Duke University Medical Center Durham, NC, USA ; Department of Molecular Genetics and Microbiology, Duke University Medical Center Durham, NC, USA
| |
Collapse
|
12
|
Harrison R. 2013 Lush Science Prize. Altern Lab Anim 2015; 42:395-402. [PMID: 25635648 DOI: 10.1177/026119291404200609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The annual Lush Science Prize is designed to reward outstanding contributions to 21st Century Toxicology Research. A Background Paper is prepared each year prior to the judging process, in order to provide the judging panel with a brief overview of current developments in the field of Replacement alternatives, particularly those relevant to the concept of toxicity pathways. The Background Paper includes information on some key institutional developments in the area--such as the OECD's Adverse Outcome Pathway Project, the Hamner Institute's work, and the Human Toxome Project, and on the phenomenon of collaborative computer systems relevant to the field. From the literature review that was also performed as part of the background research, the two papers receiving the highest score were recommended for consideration by the judges for the 2013 Science Prize.
Collapse
|
13
|
Serrano-Candelas E, Farré D, Aranguren-Ibáñez Á, Martínez-Høyer S, Pérez-Riba M. The vertebrate RCAN gene family: novel insights into evolution, structure and regulation. PLoS One 2014; 9:e85539. [PMID: 24465593 PMCID: PMC3896409 DOI: 10.1371/journal.pone.0085539] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 12/04/2013] [Indexed: 12/30/2022] Open
Abstract
Recently there has been much interest in the Regulators of Calcineurin (RCAN) proteins which are important endogenous modulators of the calcineurin-NFATc signalling pathway. They have been shown to have a crucial role in cellular programmes such as the immune response, muscle fibre remodelling and memory, but also in pathological processes such as cardiac hypertrophy and neurodegenerative diseases. In vertebrates, the RCAN family form a functional subfamily of three members RCAN1, RCAN2 and RCAN3 whereas only one RCAN is present in the rest of Eukarya. In addition, RCAN genes have been shown to collocate with RUNX and CLIC genes in ACD clusters (ACD21, ACD6 and ACD1). How the RCAN genes and their clustering in ACDs evolved is still unknown. After analysing RCAN gene family evolution using bioinformatic tools, we propose that the three RCAN vertebrate genes within the ACD clusters, which evolved from single copy genes present in invertebrates and lower eukaryotes, are the result of two rounds of whole genome duplication, followed by a segmental duplication. This evolutionary scenario involves the loss or gain of some RCAN genes during evolution. In addition, we have analysed RCAN gene structure and identified the existence of several characteristic features that can be involved in RCAN evolution and gene expression regulation. These included: several transposable elements, CpG islands in the 5′ region of the genes, the existence of antisense transcripts (NAT) associated with the three human genes, and considerable evidence for bidirectional promoters that regulate RCAN gene expression. Furthermore, we show that the CpG island associated with the RCAN3 gene promoter is unmethylated and transcriptionally active. All these results provide timely new insights into the molecular mechanisms underlying RCAN function and a more in depth knowledge of this gene family whose members are obvious candidates for the development of future therapies.
Collapse
Affiliation(s)
- Eva Serrano-Candelas
- Cancer and Human Molecular Genetics Department, Bellvitge Biomedical Research Institute – IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
| | - Domènec Farré
- Biological Aggression and Response Mechanisms Unit, Institut d'Investigacions Biomèdiques August Pi i Sunyer – IDIBAPS, Barcelona, Spain
| | - Álvaro Aranguren-Ibáñez
- Cancer and Human Molecular Genetics Department, Bellvitge Biomedical Research Institute – IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
| | - Sergio Martínez-Høyer
- Cancer and Human Molecular Genetics Department, Bellvitge Biomedical Research Institute – IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
| | - Mercè Pérez-Riba
- Cancer and Human Molecular Genetics Department, Bellvitge Biomedical Research Institute – IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
- * E-mail:
| |
Collapse
|