1
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Lambert KA, Clements CM, Mukherjee N, Pacheco TR, Shellman SX, Henen MA, Vögeli B, Goldstein NB, Birlea S, Hintzsche J, Caryotakis G, Tan AC, Zhao R, Norris DA, Robinson WA, Wang Y, VanTreeck JG, Shellman YG. SASH1 S519N variant links skin hyperpigmentation and premature hair graying to dysfunction of melanocyte lineage. J Invest Dermatol 2024:S0022-202X(24)00393-2. [PMID: 38848986 DOI: 10.1016/j.jid.2024.04.027] [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: 12/19/2023] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 06/09/2024]
Abstract
A better understanding of human melanocyte (MC) and melanocyte stem cell (McSC) biology is essential for treating melanocyte-related diseases. This study employed an inherited pigmentation disorder carrying the SASH1S519N variant in a Hispanic family to investigate the SASH1 function in the MC lineage and the underlying mechanism for this disorder. We used a multidisciplinary approach, including clinical exams, human cell assays, yeast two-hybrid screening, and biochemical techniques. Results linked early hair graying to the SASH1S519N variant, a previously unrecognized clinical phenotype in hyperpigmentation disorders. In vitro, we identified SASH1 as a regulator in McSC maintenance and discovered that TNKS2 is crucial for SASH1's role. Additionally, the S519N variant is located in one of multiple tankyrase-binding motifs and alters the binding kinetics and affinity of the interaction. In summary, this disorder links both gain and loss of pigmentation in the same individual, hinting to accelerated aging in human McSC. The findings offer insights into the roles of SASH1 and TNKS2 in McSC maintenance and the molecular mechanisms of pigmentation disorders. We propose that a comprehensive clinical evaluation of patients with MC-related disorders should include an assessment and history of hair pigmentation loss.
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Affiliation(s)
- Karoline A Lambert
- Department of Dermatology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045
| | - Christopher M Clements
- Department of Dermatology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045
| | - Nabanita Mukherjee
- Department of Dermatology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045
| | - Theresa R Pacheco
- Department of Dermatology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045
| | - Samantha X Shellman
- Department of Computer Science, University of Colorado Boulder, Boulder, CO 80309
| | - Morkos A Henen
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045
| | - Beat Vögeli
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045
| | - Nathaniel B Goldstein
- Department of Dermatology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045
| | - Stanca Birlea
- Department of Dermatology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045; Gates Institute, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | | | - Griffin Caryotakis
- Departments of Oncological Sciences and Biomedical Informatics, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112
| | - Aik-Choon Tan
- Departments of Oncological Sciences and Biomedical Informatics, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112
| | - Rui Zhao
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045
| | - David A Norris
- Department of Dermatology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045
| | - William A Robinson
- Division of Medical Oncology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045
| | - Yizhou Wang
- Department of Chemistry, Emory University, Atlanta, GA 30322
| | - Jillian G VanTreeck
- College of Biological Sciences, University of Minnesota, Twin Cities, St. Paul, MN 55108
| | - Yiqun G Shellman
- Department of Dermatology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, CO 80045; Gates Institute, University of Colorado Anschutz Medical Campus, Aurora, CO 80045.
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2
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Mubaid S, Sanchez BJ, Algehani RA, Skopenkova V, Adjibade P, Hall DT, Busque S, Lian XJ, Ashour K, Tremblay AMK, Carlile G, Gagné JP, Diaz-Gaxiola A, Khattak S, Di Marco S, Thomas DY, Poirier GG, Gallouzi IE. Tankyrase-1 regulates RBP-mediated mRNA turnover to promote muscle fiber formation. Nucleic Acids Res 2024; 52:4002-4020. [PMID: 38321934 DOI: 10.1093/nar/gkae059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 01/19/2024] [Indexed: 02/08/2024] Open
Abstract
Poly(ADP-ribosylation) (PARylation) is a post-translational modification mediated by a subset of ADP-ribosyl transferases (ARTs). Although PARylation-inhibition based therapies are considered as an avenue to combat debilitating diseases such as cancer and myopathies, the role of this modification in physiological processes such as cell differentiation remains unclear. Here, we show that Tankyrase1 (TNKS1), a PARylating ART, plays a major role in myogenesis, a vital process known to drive muscle fiber formation and regeneration. Although all bona fide PARPs are expressed in muscle cells, experiments using siRNA-mediated knockdown or pharmacological inhibition show that TNKS1 is the enzyme responsible of catalyzing PARylation during myogenesis. Via this activity, TNKS1 controls the turnover of mRNAs encoding myogenic regulatory factors such as nucleophosmin (NPM) and myogenin. TNKS1 mediates these effects by targeting RNA-binding proteins such as Human Antigen R (HuR). HuR harbors a conserved TNKS-binding motif (TBM), the mutation of which not only prevents the association of HuR with TNKS1 and its PARylation, but also precludes HuR from regulating the turnover of NPM and myogenin mRNAs as well as from promoting myogenesis. Therefore, our data uncover a new role for TNKS1 as a key modulator of RBP-mediated post-transcriptional events required for vital processes such as myogenesis.
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Affiliation(s)
- Souad Mubaid
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Brenda Janice Sanchez
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
| | - Rinad A Algehani
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
| | - Viktoriia Skopenkova
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
| | - Pauline Adjibade
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Derek T Hall
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Sandrine Busque
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Xian Jin Lian
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Kholoud Ashour
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Anne-Marie K Tremblay
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Graeme Carlile
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
| | - Jean-Philippe Gagné
- Centre de recherche du CHU de Québec-Pavillon CHUL, Faculté de Médecine, Université Laval, Québec G1V 4G2, Canada
| | - Andrea Diaz-Gaxiola
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
| | - Shahryar Khattak
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
| | - Sergio Di Marco
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - David Y Thomas
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
| | - Guy G Poirier
- Centre de recherche du CHU de Québec-Pavillon CHUL, Faculté de Médecine, Université Laval, Québec G1V 4G2, Canada
| | - Imed-Eddine Gallouzi
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
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Clements CM, Shellman SX, Shellman MH, Shellman YG. TBM Hunter: Identify and Score Canonical, Extended, and Unconventional Tankyrase-Binding Motifs in Any Protein. Int J Mol Sci 2023; 24:16964. [PMID: 38069287 PMCID: PMC10706912 DOI: 10.3390/ijms242316964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
Tankyrases, a versatile protein group within the poly(ADP-ribose) polymerase family, are essential for post-translational poly(ADP-ribosyl)ation, influencing various cellular functions and contributing to diseases, particularly cancer. Consequently, tankyrases have become important targets for anti-cancer drug development. Emerging approaches in drug discovery aim to disrupt interactions between tankyrases and their binding partners, which hinge on tankyrase-binding motifs (TBMs) within partner proteins and ankyrin repeat cluster domains within tankyrases. Our study addresses the challenge of identifying and ranking TBMs. We have conducted a comprehensive review of the existing literature, classifying TBMs into three distinct groups, each with its own scoring system. To facilitate this process, we introduce TBM Hunter-an accessible, web-based tool. This user-friendly platform provides a cost-free and efficient means to screen and assess potential TBMs within any given protein. TBM Hunter can handle individual proteins or lists of proteins simultaneously. Notably, our results demonstrate that TBM Hunter not only identifies known TBMs but also uncovers novel ones. In summary, our study offers an all-encompassing perspective on TBMs and presents an easy-to-use, precise, and free tool for identifying and evaluating potential TBMs in any protein, thereby enhancing research and drug development efforts focused on tankyrases.
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Affiliation(s)
- Christopher M. Clements
- Department of Dermatology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
| | - Samantha X. Shellman
- Department of Computer Science, University of Colorado Boulder, Boulder, CO 80309, USA;
| | - Melody H. Shellman
- H. Milton Stewart School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;
| | - Yiqun G. Shellman
- Department of Dermatology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
- Charles C. Gates Regenerative Medicine and Stem Cell Biology Institute, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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4
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Lambert KA, Clements CM, Mukherjee N, Pacheco TR, Shellman SX, Henen MA, Vögeli B, Goldstein NB, Birlea S, Hintzsche J, Tan AC, Zhao R, Norris DA, Robinson WA, Wang Y, VanTreeck JG, Shellman YG. SASH1 interacts with TNKS2 and promotes human melanocyte stem cell maintenance. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.26.559624. [PMID: 37808724 PMCID: PMC10557680 DOI: 10.1101/2023.09.26.559624] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Both aging spots (hyperpigmentation) and hair graying (lack of pigmentation) are associated with aging, two seemingly opposite pigmentation phenotypes. It is not clear how they are mechanistically connected. This study investigated the underlying mechanism in a family with an inherited pigmentation disorder. Clinical examinations identified accelerated hair graying and skin dyspigmentation (intermixed hyper and hypopigmentation) in the family members carrying the SASH1 S519N variant. Cell assays indicated that SASH1 promoted stem-like characteristics in human melanocytes, and SASH1 S519N was defective in this function. Multiple assays showed that SASH1 binds to tankyrase 2 (TNKS2), which is required for SASH1's promotion of stem-like function. Further, the SASH1 S519N variant is in a bona fide Tankyrase-binding motif, and SASH1 S519N alters the binding kinetics and affinity. Results here indicate SASH1 as a novel protein regulating the appropriate balance between melanocyte stem cells (McSC) and mature melanocytes (MCs), with S519N variant causing defects. We propose that dysfunction of McSC maintenance connects multiple aging-associated pigmentation phenotypes in the general population.
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Vilchez Larrea S, Valsecchi WM, Fernández Villamil SH, Lafon Hughes LI. First body of evidence suggesting a role of a tankyrase-binding motif (TBM) of vinculin (VCL) in epithelial cells. PeerJ 2021; 9:e11442. [PMID: 34123588 PMCID: PMC8164839 DOI: 10.7717/peerj.11442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 04/21/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Adherens junctions (AJ) are involved in cancer, infections and neurodegeneration. Still, their composition has not been completely disclosed. Poly(ADP-ribose) polymerases (PARPs) catalyze the synthesis of poly(ADP-ribose) (PAR) as a posttranslational modification. Four PARPs synthesize PAR, namely PARP-1/2 and Tankyrase-1/2 (TNKS). In the epithelial belt, AJ are accompanied by a PAR belt and a subcortical F-actin ring. F-actin depolymerization alters the AJ and PAR belts while PARP inhibitors prevent the assembly of the AJ belt and cortical actin. We wondered which PARP synthesizes the belt and which is the PARylation target protein. Vinculin (VCL) participates in the anchorage of F-actin to the AJ, regulating its functions, and colocalized with the PAR belt. TNKS has been formerly involved in the assembly of epithelial cell junctions. HYPOTHESIS TNKS poly(ADP-ribosylates) (PARylates) epithelial belt VCL, affecting its functions in AJ, including cell shape maintenance. MATERIALS AND METHODS Tankyrase-binding motif (TBM) sequences in hVCL gene were identified and VCL sequences from various vertebrates, Drosophila melanogaster and Caenorhabditis elegans were aligned and compared. Plasma membrane-associated PAR was tested by immunocytofluorescence (ICF) and subcellular fractionation in Vero cells while TNKS role in this structure and cell junction assembly was evaluated using specific inhibitors. The identity of the PARylated proteins was tested by affinity precipitation with PAR-binding reagent followed by western blots. Finally, MCF-7 human breast cancer epithelial cells were subjected to transfection with Tol2-plasmids, carrying a dicistronic expression sequence including Gallus gallus wt VCL (Tol-2-GgVCL), or the same VCL gene with a point mutation in TBM-II (Tol2-GgVCL/*TBM) under the control of a β-actin promoter, plus green fluorescent protein following an internal ribosome entry site (IRES-GFP) to allow the identification of transfected cells without modifying the transfected protein of interest. RESULTS AND DISCUSSION In this work, some of the hypothesis predictions have been tested. We have demonstrated that: (1) VCL TBMs were conserved in vertebrate evolution while absent in C. elegans; (2) TNKS inhibitors disrupted the PAR belt synthesis, while PAR and an endogenous TNKS pool were associated to the plasma membrane; (3) a VCL pool was covalently PARylated; (4) transfection of MCF-7 cells leading to overexpression of Gg-VCL/*TBM induced mesenchymal-like cell shape changes. This last point deserves further investigation, bypassing the limits of our transient transfection and overexpression system. In fact, a 5th testable prediction would be that a single point mutation in VCL TBM-II under endogenous expression control would induce an epithelial to mesenchymal transition (EMT). To check this, a CRISPR/Cas9 substitution approach followed by migration, invasion, gene expression and chemo-resistance assays should be performed.
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Affiliation(s)
- Salomé Vilchez Larrea
- Instituto de Investigaciones en Ingeniería Genética y Biología Molecular “Dr Héctor N. Torres”, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Ciudad Autónoma de Buenos Aires, República Argentina
| | - Wanda Mariela Valsecchi
- Instituto de Química y Fisicoquímica Biológicas, “Prof. Alejandro C. Paladini” (IQUIFIB) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Ciudad Autónoma de Buenos Aires, República Argentina
- Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Silvia H. Fernández Villamil
- Instituto de Investigaciones en Ingeniería Genética y Biología Molecular “Dr Héctor N. Torres”, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Ciudad Autónoma de Buenos Aires, República Argentina
- Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Laura I. Lafon Hughes
- Grupo de Biofisicoquímica, Departamento de Ciencias Biológicas, Centro Universitario Regional Litoral Norte (CENUR), Universidad de la República, Salto, Uruguay
- Departamento de Genética, Instituto de Investigaciones Biológicas Clemente Estable, Ministerio de Educación y Cultura, Montevideo, Uruguay
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6
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Sowa ST, Vela-Rodríguez C, Galera-Prat A, Cázares-Olivera M, Prunskaite-Hyyryläinen R, Ignatev A, Lehtiö L. A FRET-based high-throughput screening platform for the discovery of chemical probes targeting the scaffolding functions of human tankyrases. Sci Rep 2020; 10:12357. [PMID: 32704068 PMCID: PMC7378079 DOI: 10.1038/s41598-020-69229-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 07/02/2020] [Indexed: 12/13/2022] Open
Abstract
Tankyrases catalyse poly-ADP-ribosylation of their binding partners and the modification serves as a signal for the subsequent proteasomal degradation of these proteins. Tankyrases thereby regulate the turnover of many proteins involved in multiple and diverse cellular processes, such as mitotic spindle formation, telomere homeostasis and Wnt/β-catenin signalling. In recent years, tankyrases have become attractive targets for the development of inhibitors as potential therapeutics against cancer and fibrosis. Further, it has become clear that tankyrases are not only enzymes, but also act as scaffolding proteins forming large cellular signalling complexes. While many potent and selective tankyrase inhibitors of the poly-ADP-ribosylation function exist, the inhibition of tankyrase scaffolding functions remains scarcely explored. In this work we present a robust, simple and cost-effective high-throughput screening platform based on FRET for the discovery of small molecule probes targeting the protein–protein interactions of tankyrases. Validatory screening with the platform led to the identification of two compounds with modest binding affinity to the tankyrase 2 ARC4 domain, demonstrating the applicability of this approach. The platform will facilitate identification of small molecules binding to tankyrase ARC or SAM domains and help to advance a structure-guided development of improved chemical probes targeting tankyrase oligomerization and substrate protein interactions.
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Affiliation(s)
- Sven T Sowa
- Faculty for Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Carlos Vela-Rodríguez
- Faculty for Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Albert Galera-Prat
- Faculty for Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Mariana Cázares-Olivera
- Faculty for Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, Oulu, Finland
| | | | - Alexander Ignatev
- Faculty for Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Lari Lehtiö
- Faculty for Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, Oulu, Finland.
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7
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Sjögren syndrome/scleroderma autoantigen 1 is a direct Tankyrase binding partner in cancer cells. Commun Biol 2020; 3:123. [PMID: 32170109 PMCID: PMC7070046 DOI: 10.1038/s42003-020-0851-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 02/21/2020] [Indexed: 12/30/2022] Open
Abstract
Sjögren syndrome/scleroderma autoantigen 1 (SSSCA1) was first described as an auto-antigen over-expressed in Sjögren’s syndrome and in scleroderma patients. SSSCA1 has been linked to mitosis and centromere association and as a potential marker candidate in diverse solid cancers. Here we characterize SSSCA1 for the first time, to our knowledge, at the molecular, structural and subcellular level. We have determined the crystal structure of a zinc finger fold, a zinc ribbon domain type 2 (ZNRD2), at 2.3 Å resolution. We show that the C-terminal domain serves a dual function as it both behaves as the interaction site to Tankyrase 1 (TNKS1) and as a nuclear export signal. We identify TNKS1 as a direct binding partner of SSSCA1, map the binding site to TNKS1 ankyrin repeat cluster 2 (ARC2) and thus define a new binding sequence. We experimentally verify and map a new nuclear export signal sequence in SSSCA1. Perdreau-Dahl et al. systematically characterise Sjögren syndrome/scleroderma autoantigen 1 at the molecular, structural and subcellular level. They show that the C-terminal domain serves a dual function as it both behaves as the interaction site to Tankyrase 1 and as a nuclear export signal.
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8
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Pollock K, Liu M, Zaleska M, Meniconi M, Pfuhl M, Collins I, Guettler S. Fragment-based screening identifies molecules targeting the substrate-binding ankyrin repeat domains of tankyrase. Sci Rep 2019; 9:19130. [PMID: 31836723 PMCID: PMC6911004 DOI: 10.1038/s41598-019-55240-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 11/22/2019] [Indexed: 12/16/2022] Open
Abstract
The PARP enzyme and scaffolding protein tankyrase (TNKS, TNKS2) uses its ankyrin repeat clusters (ARCs) to bind a wide range of proteins and thereby controls diverse cellular functions. A number of these are implicated in cancer-relevant processes, including Wnt/β-catenin signalling, Hippo signalling and telomere maintenance. The ARCs recognise a conserved tankyrase-binding peptide motif (TBM). All currently available tankyrase inhibitors target the catalytic domain and inhibit tankyrase's poly(ADP-ribosyl)ation function. However, there is emerging evidence that catalysis-independent "scaffolding" mechanisms contribute to tankyrase function. Here we report a fragment-based screening programme against tankyrase ARC domains, using a combination of biophysical assays, including differential scanning fluorimetry (DSF) and nuclear magnetic resonance (NMR) spectroscopy. We identify fragment molecules that will serve as starting points for the development of tankyrase substrate binding antagonists. Such compounds will enable probing the scaffolding functions of tankyrase, and may, in the future, provide potential alternative therapeutic approaches to inhibiting tankyrase activity in cancer and other conditions.
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Affiliation(s)
- Katie Pollock
- Divisions of Structural Biology & Cancer Biology, The Institute of Cancer Research (ICR), London, SW7 3RP, United Kingdom
- Division of Cancer Therapeutics, The Institute of Cancer Research (ICR), London, SW7 3RP, United Kingdom
- Cancer Research UK Beatson Institute, Drug Discovery Programme, Glasgow, G61 1BD, United Kingdom
| | - Manjuan Liu
- Division of Cancer Therapeutics, The Institute of Cancer Research (ICR), London, SW7 3RP, United Kingdom
| | - Mariola Zaleska
- Divisions of Structural Biology & Cancer Biology, The Institute of Cancer Research (ICR), London, SW7 3RP, United Kingdom
| | - Mirco Meniconi
- Division of Cancer Therapeutics, The Institute of Cancer Research (ICR), London, SW7 3RP, United Kingdom
| | - Mark Pfuhl
- School of Cardiovascular Medicine and Sciences and Randall Centre, King's College London, Guy's Campus, London, SE1 1UL, United Kingdom
| | - Ian Collins
- Division of Cancer Therapeutics, The Institute of Cancer Research (ICR), London, SW7 3RP, United Kingdom.
| | - Sebastian Guettler
- Divisions of Structural Biology & Cancer Biology, The Institute of Cancer Research (ICR), London, SW7 3RP, United Kingdom.
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9
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Vivelo CA, Ayyappan V, Leung AKL. Poly(ADP-ribose)-dependent ubiquitination and its clinical implications. Biochem Pharmacol 2019; 167:3-12. [PMID: 31077644 PMCID: PMC6702056 DOI: 10.1016/j.bcp.2019.05.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 05/04/2019] [Indexed: 12/11/2022]
Abstract
ADP-ribosylation-the addition of one or multiple ADP-ribose units onto proteins-is a therapeutically important post-translational modification implicated in cancer, neurodegeneration, and infectious diseases. The protein modification regulates a broad range of biological processes, including DNA repair, transcription, RNA metabolism, and the structural integrity of nonmembranous structures. The polymeric form of ADP-ribose, poly(ADP-ribose), was recently identified as a signal for triggering protein degradation through the ubiquitin-proteasome system. Using informatics analyses, we found that these ubiquitinated substrates tend to be low abundance proteins, which may serve as rate-limiting factors within signaling networks or metabolic processes. In this review, we summarize the current literature on poly(ADP-ribose)-dependent ubiquitination (PARdU) regarding its biological mechanisms, substrates, and relevance to diseases.
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Affiliation(s)
- Christina A Vivelo
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Vinay Ayyappan
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Anthony K L Leung
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA; Department of Molecular Biology and Genetics, School of Medicine, Johns Hopkins University, Baltimore, MD, USA; Department of Oncology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA.
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Insights into the biogenesis, function, and regulation of ADP-ribosylation. Nat Chem Biol 2019; 14:236-243. [PMID: 29443986 DOI: 10.1038/nchembio.2568] [Citation(s) in RCA: 183] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 12/28/2017] [Indexed: 12/26/2022]
Abstract
ADP-ribosylation-the transfer of ADP-ribose (ADPr) from NAD+ onto target molecules-is catalyzed by members of the ADP-ribosyltransferase (ART) superfamily of proteins, found in all kingdoms of life. Modification of amino acids in protein targets by ADPr regulates critical cellular pathways in eukaryotes and underlies the pathogenicity of certain bacteria. Several members of the ART superfamily are highly relevant for disease; these include the poly(ADP-ribose) polymerases (PARPs), recently shown to be important cancer targets, and the bacterial toxins diphtheria toxin and cholera toxin, long known to be responsible for the symptoms of diphtheria and cholera that result in morbidity. In this Review, we discuss the functions of amino acid ADPr modifications and the ART proteins that make them, the nature of the chemical linkage between ADPr and its targets and how this impacts function and stability, and the way that ARTs select specific amino acids in targets to modify.
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Zaleska M, Pollock K, Collins I, Guettler S, Pfuhl M. Solution NMR assignment of the ARC4 domain of human tankyrase 2. BIOMOLECULAR NMR ASSIGNMENTS 2019; 13:255-260. [PMID: 30847846 PMCID: PMC6439159 DOI: 10.1007/s12104-019-09887-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 03/02/2019] [Indexed: 06/09/2023]
Abstract
Tankyrases are poly(ADP-ribose)polymerases (PARPs) which recognize their substrates via their ankyrin repeat cluster (ARC) domains. The human tankyrases (TNKS/TNKS2) contain five ARCs in their extensive N-terminal region; of these, four bind peptides present within tankyrase interactors and substrates. These short, linear segments, known as tankyrase-binding motifs (TBMs), contain some highly conserved features: an arginine at position 1, which occupies a predominantly acidic binding site, and a glycine at position 6 that is sandwiched between two aromatic side chains on the surface of the ARC domain. Tankyrases are involved in a multitude of biological functions, amongst them Wnt/β-catenin signaling, the maintenance of telomeres, glucose metabolism, spindle formation, the DNA damage response and Hippo signaling. As many of these are relevant to human disease, tankyrase is an important target candidate for drug development. With the emergence of non-catalytic (scaffolding) functions of tankyrase, it seems attractive to interfere with ARC function rather than the enzymatic activity of tankyrase. To study the mechanism of ARC-dependent recruitment of tankyrase binders and enable protein-observed NMR screening methods, we have as the first step obtained a full backbone and partial side chain assignment of TNKS2 ARC4. The assignment highlights some of the unusual structural features of the ARC domain.
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Affiliation(s)
- Mariola Zaleska
- Divisions of Structural Biology & Cancer Biology, The Institute of Cancer Research (ICR), London, SW7 3RP, UK
| | - Katie Pollock
- Divisions of Structural Biology & Cancer Biology, The Institute of Cancer Research (ICR), London, SW7 3RP, UK
- Division of Cancer Therapeutics, The Institute of Cancer Research (ICR), London, SW7 3RP, UK
| | - Ian Collins
- Division of Cancer Therapeutics, The Institute of Cancer Research (ICR), London, SW7 3RP, UK
| | - Sebastian Guettler
- Divisions of Structural Biology & Cancer Biology, The Institute of Cancer Research (ICR), London, SW7 3RP, UK
| | - Mark Pfuhl
- School of Cardiovascular Medicine and Sciences and Randall Centre, King's College London, Guy's Campus, London, SE1 1UL, UK.
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Crawford K, Bonfiglio JJ, Mikoč A, Matic I, Ahel I. Specificity of reversible ADP-ribosylation and regulation of cellular processes. Crit Rev Biochem Mol Biol 2018; 53:64-82. [PMID: 29098880 DOI: 10.1080/10409238.2017.1394265] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/12/2017] [Accepted: 10/16/2017] [Indexed: 02/08/2023]
Abstract
Proper and timely regulation of cellular processes is fundamental to the overall health and viability of organisms across all kingdoms of life. Thus, organisms have evolved multiple highly dynamic and complex biochemical signaling cascades in order to adapt and survive diverse challenges. One such method of conferring rapid adaptation is the addition or removal of reversible modifications of different chemical groups onto macromolecules which in turn induce the appropriate downstream outcome. ADP-ribosylation, the addition of ADP-ribose (ADPr) groups, represents one of these highly conserved signaling chemicals. Herein we outline the writers, erasers and readers of ADP-ribosylation and dip into the multitude of cellular processes they have been implicated in. We also review what we currently know on how specificity of activity is ensured for this important modification.
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Affiliation(s)
- Kerryanne Crawford
- a Sir William Dunn School of Pathology , University of Oxford , Oxford , UK
| | | | - Andreja Mikoč
- c Division of Molecular Biology , Ruđer Bošković Institute , Zagreb , Croatia
| | - Ivan Matic
- b Max Planck Institute for Biology of Ageing , Cologne , Germany
| | - Ivan Ahel
- a Sir William Dunn School of Pathology , University of Oxford , Oxford , UK
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