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Ople R, Ramos-Gonzalez N, Li Q, Sobecks BL, Aydin D, Powers AS, Faouzi A, Polacco BJ, Bernhard SM, Appourchaux K, Sribhashyam S, Eans SO, Tsai BA, Dror RO, Varga BR, Wang H, Hüttenhain R, McLaughlin JP, Majumdar S. Signaling Modulation Mediated by Ligand Water Interactions with the Sodium Site at μOR. ACS CENTRAL SCIENCE 2024; 10:1490-1503. [PMID: 39220695 PMCID: PMC11363324 DOI: 10.1021/acscentsci.4c00525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 06/19/2024] [Accepted: 06/20/2024] [Indexed: 09/04/2024]
Abstract
The mu opioid receptor (μOR) is a target for clinically used analgesics. However, adverse effects, such as respiratory depression and physical dependence, necessitate the development of alternative treatments. Recently we reported a novel strategy to design functionally selective opioids by targeting the sodium binding allosteric site in μOR with a supraspinally active analgesic named C6guano. Presently, to improve systemic activity of this ligand, we used structure-based design, identifying a new ligand named RO76 where the flexible alkyl linker and polar guanidine guano group is swapped with a benzyl alcohol, and the sodium site is targeted indirectly through waters. A cryoEM structure of RO76 bound to the μOR-Gi complex confirmed that RO76 interacts with the sodium site residues through a water molecule, unlike C6guano which engages the sodium site directly. Signaling assays coupled with APEX based proximity labeling show binding in the sodium pocket modulates receptor efficacy and trafficking. In mice, RO76 was systemically active in tail withdrawal assays and showed reduced liabilities compared to those of morphine. In summary, we show that targeting water molecules in the sodium binding pocket may be an avenue to modulate signaling properties of opioids, and which may potentially be extended to other G-protein coupled receptors where this site is conserved.
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Affiliation(s)
- Rohini
S. Ople
- Center
for Clinical Pharmacology, University of
Health Sciences & Pharmacy at St. Louis and Washington University
School of Medicine, St. Louis, Missouri 63110, United States
- Department
of Anesthesiology and Washington University Pain Center, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Nokomis Ramos-Gonzalez
- Center
for Clinical Pharmacology, University of
Health Sciences & Pharmacy at St. Louis and Washington University
School of Medicine, St. Louis, Missouri 63110, United States
- Department
of Anesthesiology and Washington University Pain Center, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Qiongyu Li
- Department
of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, California 94158, United States
| | - Briana L. Sobecks
- Department of Computer Science, Stanford
University, Stanford, California 94305, United States
- Department
of Structural Biology, Stanford University
School of Medicine, Stanford, California 94305, United States
- Department
of Molecular & Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Deniz Aydin
- Department of Computer Science, Stanford
University, Stanford, California 94305, United States
- Department
of Structural Biology, Stanford University
School of Medicine, Stanford, California 94305, United States
- Department
of Molecular & Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Alexander S. Powers
- Department of Computer Science, Stanford
University, Stanford, California 94305, United States
- Department
of Structural Biology, Stanford University
School of Medicine, Stanford, California 94305, United States
- Department
of Molecular & Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Abdelfattah Faouzi
- Center
for Clinical Pharmacology, University of
Health Sciences & Pharmacy at St. Louis and Washington University
School of Medicine, St. Louis, Missouri 63110, United States
- Department
of Anesthesiology and Washington University Pain Center, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Benjamin J. Polacco
- Department of Computer Science, Stanford
University, Stanford, California 94305, United States
- Department
of Structural Biology, Stanford University
School of Medicine, Stanford, California 94305, United States
| | - Sarah M. Bernhard
- Center
for Clinical Pharmacology, University of
Health Sciences & Pharmacy at St. Louis and Washington University
School of Medicine, St. Louis, Missouri 63110, United States
- Department
of Anesthesiology and Washington University Pain Center, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Kevin Appourchaux
- Center
for Clinical Pharmacology, University of
Health Sciences & Pharmacy at St. Louis and Washington University
School of Medicine, St. Louis, Missouri 63110, United States
- Department
of Anesthesiology and Washington University Pain Center, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Sashrik Sribhashyam
- Center
for Clinical Pharmacology, University of
Health Sciences & Pharmacy at St. Louis and Washington University
School of Medicine, St. Louis, Missouri 63110, United States
- Department
of Anesthesiology and Washington University Pain Center, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Shainnel O. Eans
- Department
of Pharmacodynamics, University of Florida, Gainesville, Florida 032610, United
States
| | - Bowen A. Tsai
- Department
of Pharmacodynamics, University of Florida, Gainesville, Florida 032610, United
States
| | - Ron O. Dror
- Department of Computer Science, Stanford
University, Stanford, California 94305, United States
- Department
of Structural Biology, Stanford University
School of Medicine, Stanford, California 94305, United States
- Department
of Molecular & Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Balazs R. Varga
- Center
for Clinical Pharmacology, University of
Health Sciences & Pharmacy at St. Louis and Washington University
School of Medicine, St. Louis, Missouri 63110, United States
- Department
of Anesthesiology and Washington University Pain Center, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Haoqing Wang
- Department
of Molecular & Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Ruth Hüttenhain
- Department
of Molecular & Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Jay P. McLaughlin
- Department
of Pharmacodynamics, University of Florida, Gainesville, Florida 032610, United
States
| | - Susruta Majumdar
- Center
for Clinical Pharmacology, University of
Health Sciences & Pharmacy at St. Louis and Washington University
School of Medicine, St. Louis, Missouri 63110, United States
- Department
of Anesthesiology and Washington University Pain Center, Washington University School of Medicine, St. Louis, Missouri 63110, United States
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2
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Joustra V, Li Yim AYF, van Gennep S, Hageman I, de Waard T, Levin E, Lauffer P, de Jonge W, Henneman P, Löwenberg M, D’Haens G. Peripheral Blood DNA Methylation Signatures and Response to Tofacitinib in Moderate-to-severe Ulcerative Colitis. J Crohns Colitis 2024; 18:1179-1189. [PMID: 37526299 PMCID: PMC11324342 DOI: 10.1093/ecco-jcc/jjad129] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/22/2023] [Accepted: 07/27/2023] [Indexed: 08/02/2023]
Abstract
INTRODUCTION Predictive biomarkers for treatment efficacy of ulcerative colitis [UC] treatments are lacking. Here, we performed a longitudinal study investigating the association and potential predictive power of genome-wide peripheral blood [PB] DNA methylation signatures and response to tofacitinib treatment in UC. METHODS We recruited moderate-to-severe UC patients starting tofacitinib treatment, and measured PB DNA methylation profiles at baseline [T1], after 8 weeks [T2], and in a subset [n = 8] after a median of 20 weeks [T3] using the Illumina Infinium HumanMethylation EPIC BeadChip. After 8 weeks, we distinguished responders [R] from non-responders [NR] based on a centrally read endoscopic response [decrease in endoscopic Mayo score ≥1 or Ulcerative Colitis Endoscopic Index of Severity ≥2] combined with corticosteroid-free clinical and/or biochemical response. T1 PB samples were used for biomarker identification, and T2 and publicly available intraclass correlation [ICC] data were used for stability analyses. RNA-sequencing was performed to understand the downstream effects of the predictor CpG loci. RESULTS In total, 16 R and 15 NR patients, with a median disease duration of 7 [4-12] years and overall comparable patient characteristics at baseline, were analysed. We identified a panel of 53 differentially methylated positions [DMPs] associated with response to tofacitinib [AUROC 0.74]. Most DMPs [77%] demonstrated both short- and long-term hyperstability [ICC ≥0.90], irrespective of inflammatory status. Gene expression analysis showed lower FGFR2 [pBH = 0.011] and LRPAP1 [pBH = 0.020], and higher OR2L13 [pBH = 0.016] expression at T1 in R compared with NR. CONCLUSION Our observations demonstrate the utility of genome-wide PB DNA methylation signatures to predict response to tofacitinib.
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Affiliation(s)
- Vincent Joustra
- Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Andrew Y F Li Yim
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Genome Diagnostics Laboratory, Department of Human Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Reproduction and Development, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Sara van Gennep
- Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Ishtu Hageman
- Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | | | | | - Peter Lauffer
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Pediatric Endocrinology, Emma Children’s Hospital, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Wouter de Jonge
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Surgery, University of Bonn, Bonn, Germany
| | - Peter Henneman
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Genome Diagnostics Laboratory, Department of Human Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Reproduction and Development, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Mark Löwenberg
- Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Geert D’Haens
- Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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Trudeau SJ, Hwang H, Mathur D, Begum K, Petrey D, Murray D, Honig B. PrePCI: A structure- and chemical similarity-informed database of predicted protein compound interactions. Protein Sci 2023; 32:e4594. [PMID: 36776141 PMCID: PMC10019447 DOI: 10.1002/pro.4594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 02/14/2023]
Abstract
We describe the Predicting Protein-Compound Interactions (PrePCI) database which comprises over 5 billion predicted interactions between 6.8 million chemical compounds and 19,797 human proteins. PrePCI relies on a proteome-wide database of structural models based on both traditional modeling techniques and the AlphaFold Protein Structure Database. Sequence- and structural similarity-based metrics are established between template proteins, T, in the Protein Data Bank that bind compounds, C, and query proteins in the model database, Q. When the metrics exceed threshold values, it is assumed that C also binds to Q with a likelihood ratio (LR) derived from machine learning. If the relationship is based on structural similarity, the LR is based on a scoring function that measures the extent to which C is compatible with the binding site of Q as described in the LT-scanner algorithm. For every predicted complex derived in this way, chemical similarity based on the Tanimoto coefficient identifies other small molecules that may bind to Q. An overall LR for the binding of C to Q is obtained from Naive Bayesian statistics. The PrePCI database can be queried by entering a UniProt ID or gene name for a protein to obtain a list of compounds predicted to bind to it along with associated LRs. Alternatively, entering an identifier for the compound outputs a list of proteins it is predicted to bind. Specific applications of the database to lead discovery, elucidation of drug mechanism of action, and biological function annotation are described.
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Affiliation(s)
- Stephen J. Trudeau
- Department of Systems BiologyColumbia University Irving Medical CenterNew YorkNew YorkUSA
- Integrated Graduate Program in Cellular, Molecular and Biomedical Studies (CMBS), Columbia University Irving Medical CenterNew YorkNew YorkUSA
| | - Howook Hwang
- Department of Systems BiologyColumbia University Irving Medical CenterNew YorkNew YorkUSA
- Schrodinger, Inc.New YorkNew YorkUSA
| | - Deepika Mathur
- Department of Systems BiologyColumbia University Irving Medical CenterNew YorkNew YorkUSA
- Department of Genetics and Genomic SciencesIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
- Department of PsychiatryIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Kamrun Begum
- Department of Systems BiologyColumbia University Irving Medical CenterNew YorkNew YorkUSA
| | - Donald Petrey
- Department of Systems BiologyColumbia University Irving Medical CenterNew YorkNew YorkUSA
| | - Diana Murray
- Department of Systems BiologyColumbia University Irving Medical CenterNew YorkNew YorkUSA
| | - Barry Honig
- Department of Systems BiologyColumbia University Irving Medical CenterNew YorkNew YorkUSA
- Department of Biochemistry and Molecular BiophysicsColumbia University Irving Medical CenterNew YorkNew YorkUSA
- Department of MedicineColumbia UniversityNew YorkNew YorkUSA
- Zuckerman Mind Brain and Behavior InstituteColumbia UniversityNew YorkNew YorkUSA
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Davies EM, Gurung R, Le KQ, Roan KT, Harvey RP, Mitchell GM, Schwarz Q, Mitchell CA. PI(4,5)P 2-dependent regulation of endothelial tip cell specification contributes to angiogenesis. SCIENCE ADVANCES 2023; 9:eadd6911. [PMID: 37000875 PMCID: PMC10065449 DOI: 10.1126/sciadv.add6911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 02/24/2023] [Indexed: 06/19/2023]
Abstract
Dynamic positioning of endothelial tip and stalk cells, via the interplay between VEGFR2 and NOTCH signaling, is essential for angiogenesis. VEGFR2 activates PI3K, which phosphorylates PI(4,5)P2 to PI(3,4,5)P3, activating AKT; however, PI3K/AKT does not direct tip cell specification. We report that PI(4,5)P2 hydrolysis by the phosphoinositide-5-phosphatase, INPP5K, contributes to angiogenesis. INPP5K ablation disrupted tip cell specification and impaired embryonic angiogenesis associated with enhanced DLL4/NOTCH signaling. INPP5K degraded a pool of PI(4,5)P2 generated by PIP5K1C phosphorylation of PI(4)P in endothelial cells. INPP5K ablation increased PI(4,5)P2, thereby releasing β-catenin from the plasma membrane, and concurrently increased PI(3,4,5)P3-dependent AKT activation, conditions that licensed DLL4/NOTCH transcription. Suppression of PI(4,5)P2 in INPP5K-siRNA cells by PIP5K1C-siRNA, restored β-catenin membrane localization and normalized AKT signaling. Pharmacological NOTCH or AKT inhibition in vivo or genetic β-catenin attenuation rescued angiogenesis defects in INPP5K-null mice. Therefore, PI(4,5)P2 is critical for β-catenin/DLL4/NOTCH signaling, which governs tip cell specification during angiogenesis.
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Affiliation(s)
- Elizabeth M. Davies
- Cancer Program, Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Victoria 3800, Australia
| | - Rajendra Gurung
- Cancer Program, Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Victoria 3800, Australia
| | - Kai Qin Le
- Cancer Program, Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Victoria 3800, Australia
| | - Katherine T. T. Roan
- Cancer Program, Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Victoria 3800, Australia
| | - Richard P. Harvey
- Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales 2010, Australia
- School of Clinical Medicine and School of Biotechnology and Biomolecular Science, University of New South Wales, Kensington, New South Wales 2052, Australia
| | - Geraldine M. Mitchell
- O’Brien Institute Department of St Vincent’s Institute and University of Melbourne, Department of Surgery, St. Vincent’s Hospital, Fitzroy, Victoria 3065, Australia
- Health Sciences Faculty, Australian Catholic University, Fitzroy, Victoria 3065, Australia
| | - Quenten Schwarz
- Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia 5001, Australia
| | - Christina A. Mitchell
- Cancer Program, Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Victoria 3800, Australia
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Cho HD, Nhàn NTT, Zhou C, Tu K, Nguyen T, Sarich NA, Yamada KH. KIF13B mediates VEGFR2 recycling to modulate vascular permeability. Cell Mol Life Sci 2023; 80:91. [PMID: 36928770 PMCID: PMC10165967 DOI: 10.1007/s00018-023-04752-5] [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: 07/06/2022] [Revised: 03/04/2023] [Accepted: 03/06/2023] [Indexed: 03/18/2023]
Abstract
Excessive vascular endothelial growth factor-A (VEGF-A) signaling induces vascular leakage and angiogenesis in diseases. VEGFR2 trafficking to the cell surface, mediated by kinesin-3 family protein KIF13B, is essential to respond to VEGF-A when inducing angiogenesis. However, the precise mechanism of how KIF13B regulates VEGF-induced signaling and its effects on endothelial permeability is largely unknown. Here we show that KIF13B-mediated recycling of internalized VEGFR2 through Rab11-positive recycling vesicle regulates endothelial permeability. Phosphorylated VEGFR2 at the cell-cell junction was internalized and associated with KIF13B in Rab5-positive early endosomes. KIF13B mediated VEGFR2 recycling through Rab11-positive recycling vesicle. Inhibition of the function of KIF13B attenuated phosphorylation of VEGFR2 at Y951, SRC at Y416, and VE-cadherin at Y685, which are necessary for endothelial permeability. Failure of VEGFR2 trafficking to the cell surface induced accumulation and degradation of VEGFR2 in lysosomes. Furthermore, in the animal model of the blinding eye disease wet age-related macular degeneration (AMD), inhibition of KIF13B-mediated VEGFR2 trafficking also mitigated vascular leakage. Thus, the present results identify the fundamental role of VEGFR2 recycling to the cell surface in mediating vascular permeability, which suggests a promising strategy for mitigating vascular leakage associated with inflammatory diseases.
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Affiliation(s)
- Hyun-Dong Cho
- Department of Pharmacology and Regenerative Medicine, University of Illinois College of Medicine, Chicago, IL, 60612, USA
- Department of Food and Nutrition, Sunchon National University, Sunchon, 57922, Republic of Korea
| | - Nguyễn Thị Thanh Nhàn
- Department of Pharmacology and Regenerative Medicine, University of Illinois College of Medicine, Chicago, IL, 60612, USA
| | - Christopher Zhou
- Department of Pharmacology and Regenerative Medicine, University of Illinois College of Medicine, Chicago, IL, 60612, USA
| | - Kayeman Tu
- Department of Pharmacology and Regenerative Medicine, University of Illinois College of Medicine, Chicago, IL, 60612, USA
| | - Tara Nguyen
- Department of Ophthalmology and Visual Sciences, University of Illinois College of Medicine, Chicago, IL, 60612, USA
| | - Nicolene A Sarich
- Department of Pharmacology and Regenerative Medicine, University of Illinois College of Medicine, Chicago, IL, 60612, USA
| | - Kaori H Yamada
- Department of Pharmacology and Regenerative Medicine, University of Illinois College of Medicine, Chicago, IL, 60612, USA.
- Department of Ophthalmology and Visual Sciences, University of Illinois College of Medicine, Chicago, IL, 60612, USA.
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Rademaker G, Costanza B, Pyr Dit Ruys S, Peiffer R, Agirman F, Maloujahmoum N, Vertommen D, Turtoi A, Bellahcène A, Castronovo V, Peulen O. Paladin, overexpressed in colon cancer, is required for actin polymerisation and liver metastasis dissemination. Oncogenesis 2022; 11:42. [PMID: 35882839 PMCID: PMC9325978 DOI: 10.1038/s41389-022-00416-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 07/06/2022] [Accepted: 07/08/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction Colorectal cancer remains a public health issue and most colon cancer patients succumb to the development of metastases. Using a specific protocol of pressure-assisted interstitial fluid extrusion to recover soluble biomarkers, we identified paladin as a potential colon cancer liver metastases biomarker. Methods Using shRNA gene knockdown, we explored the biological function of paladin in colon cancer cells and investigated the phospho-proteome within colon cancer cells. We successively applied in vitro migration assays, in vivo metastasis models and co-immunoprecipitation experiments. Results We discovered that paladin is required for colon cancer cell migration and metastasis, and that paladin depletion altered the phospho-proteome within colon cancer cells. Data are available via ProteomeXchange with identifier PXD030803. Thanks to immunoprecipitation experiments, we demonstrated that paladin, was interacting with SSH1, a phosphatase involved in colon cancer metastasis. Finally, we showed that paladin depletion in cancer cells results in a less dynamic actin cytoskeleton. Conclusions Paladin is an undervalued protein in oncology. This study highlights for the first time that, paladin is participating in actin cytoskeleton remodelling and is required for efficient cancer cell migration. ![]()
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Affiliation(s)
- Gilles Rademaker
- Metastasis Research Laboratory, Giga Cancer University of Liège, Liège, Belgium.,Department of Anatomy, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Brunella Costanza
- Department of Experimental Oncology, European Institute of Oncology (IEO), IRCCS, Milan, 20139, Italy
| | - Sébastien Pyr Dit Ruys
- MassProt platform, de Duve Institute, Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Raphaël Peiffer
- Metastasis Research Laboratory, Giga Cancer University of Liège, Liège, Belgium
| | - Ferman Agirman
- Metastasis Research Laboratory, Giga Cancer University of Liège, Liège, Belgium
| | - Naïma Maloujahmoum
- Metastasis Research Laboratory, Giga Cancer University of Liège, Liège, Belgium
| | - Didier Vertommen
- MassProt platform, de Duve Institute, Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Andrei Turtoi
- Tumor microenvironment and resistance to treatment Laboratory, Institut de Recherche en Cancérologie de Montpellier (IRCM), Université de Montpellier (UM), Institut Régional du Cancer de Montpellier (ICM), Montpellier, France
| | - Akeila Bellahcène
- Metastasis Research Laboratory, Giga Cancer University of Liège, Liège, Belgium
| | - Vincent Castronovo
- Metastasis Research Laboratory, Giga Cancer University of Liège, Liège, Belgium
| | - Olivier Peulen
- Metastasis Research Laboratory, Giga Cancer University of Liège, Liège, Belgium.
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7
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May EA, Kalocsay M, D'Auriac IG, Schuster PS, Gygi SP, Nachury MV, Mick DU. Time-resolved proteomics profiling of the ciliary Hedgehog response. J Cell Biol 2021; 220:211991. [PMID: 33856408 PMCID: PMC8054476 DOI: 10.1083/jcb.202007207] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 02/01/2021] [Accepted: 03/03/2021] [Indexed: 12/12/2022] Open
Abstract
The primary cilium is a signaling compartment that interprets Hedgehog signals through changes of its protein, lipid, and second messenger compositions. Here, we combine proximity labeling of cilia with quantitative mass spectrometry to unbiasedly profile the time-dependent alterations of the ciliary proteome in response to Hedgehog. This approach correctly identifies the three factors known to undergo Hedgehog-regulated ciliary redistribution and reveals two such additional proteins. First, we find that a regulatory subunit of the cAMP-dependent protein kinase (PKA) rapidly exits cilia together with the G protein-coupled receptor GPR161 in response to Hedgehog, and we propose that the GPR161/PKA module senses and amplifies cAMP signals to modulate ciliary PKA activity. Second, we identify the phosphatase Paladin as a cell type-specific regulator of Hedgehog signaling that enters primary cilia upon pathway activation. The broad applicability of quantitative ciliary proteome profiling promises a rapid characterization of ciliopathies and their underlying signaling malfunctions.
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Affiliation(s)
- Elena A May
- Center of Human and Molecular Biology, Saarland University School of Medicine, Homburg, Germany
| | - Marian Kalocsay
- Department of Systems Biology, Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA.,Department of Cell Biology, Harvard Medical School, Boston, MA
| | - Inès Galtier D'Auriac
- Department of Ophthalmology, University of California, San Francisco, San Francisco, CA
| | - Patrick S Schuster
- Center of Human and Molecular Biology, Saarland University School of Medicine, Homburg, Germany
| | - Steven P Gygi
- Department of Cell Biology, Harvard Medical School, Boston, MA
| | - Maxence V Nachury
- Department of Ophthalmology, University of California, San Francisco, San Francisco, CA
| | - David U Mick
- Center of Human and Molecular Biology, Saarland University School of Medicine, Homburg, Germany.,Center for Molecular Signaling, Department of Medical Biochemistry and Molecular Biology, Saarland University School of Medicine, Homburg, Germany
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