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Nannan L, Gsell W, Belderbos S, Gallet C, Wouters J, Brassart-Pasco S, Himmelreich U, Brassart B. A multimodal imaging study to highlight elastin-derived peptide pro-tumoral effect in a pancreatic xenograft model. Br J Cancer 2023; 128:2000-2012. [PMID: 37002342 PMCID: PMC10206107 DOI: 10.1038/s41416-023-02242-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 02/28/2023] [Accepted: 03/16/2023] [Indexed: 04/03/2023] Open
Abstract
BACKGROUND Pancreatic ductal adenocarcinoma (PDAC) is highly malignant with a very poor prognosis due to its silent development and metastatic profile with a 5-year survival rate below 10%. PDAC is characterised by an abundant desmoplastic stroma modulation that influences cancer development by extracellular matrix/cell interactions. Elastin is a key element of the extracellular matrix. Elastin degradation products (EDPs) regulate numerous biological processes such as cell proliferation, migration and invasion. The aim of the present study was to characterise for the first time the effect of two EDPs with consensus sequences "GxxPG" and "GxPGxGxG" (VG-6 and AG-9) on PDAC development. The ribosomal protein SA (RPSA) has been discovered recently, acting as a new receptor of EDPs on the surface of tumour cells, contributing to poor prognosis. METHODS Six week-old female Swiss nude nu/nu (Nu(Ico)-Foxn1nu) mice were subcutaneously injected with human PDAC MIA PaCa-2/eGFP-FLuc+ cells, transduced with a purpose-made lentiviral vector, encoding green fluorescent protein (GFP) and Photinus pyralis (firefly) luciferase (FLuc). Animals were treated three times per week with AG-9 (n = 4), VG-6 (n = 5) or PBS (n = 5). The influence of EDP on PDAC was examined by multimodal imaging (bioluminescence imaging (BLI), fluorescence imaging (FLI) and magnetic resonance imaging (MRI). Tumour volumes were also measured using a caliper. Finally, immunohistology was performed at the end of the in vivo study. RESULTS After in vitro validation of MIA PaCa-2 cells by optical imaging, we demonstrated that EDPs exacerbate tumour growth in the PDAC mouse model. While VG-6 stimulated tumour growth to some extent, AG-9 had greater impact on tumour growth. We showed that the expression of the RPSA correlates with a possible effect of EDPs in the PDAC model. Multimodal imaging allowed for longitudinal in vivo follow-up of tumour development. In all groups, we showed mature vessels ending in close vicinity of the tumour, except for the AG-9 group where mature vessels are penetrating the tumour reflecting an increase of vascularisation. CONCLUSIONS Our results suggest that AG-9 strongly increases PDAC progression through an increase in tumour vascularisation.
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Affiliation(s)
- Lise Nannan
- KU Leuven, Department of Imaging and Pathology/Biomedical MRI, Leuven, Belgium
- CNRS UMR 7369 Matrice Extracellulaire et Dynamique Cellulaire, Reims, France
- Université de Reims Champagne Ardenne, Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
| | - Willy Gsell
- KU Leuven, Department of Imaging and Pathology/Biomedical MRI, Leuven, Belgium
| | - Sarah Belderbos
- KU Leuven, Department of Imaging and Pathology/Biomedical MRI, Leuven, Belgium
| | - Célia Gallet
- CNRS UMR 7369 Matrice Extracellulaire et Dynamique Cellulaire, Reims, France
- Université de Reims Champagne Ardenne, Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
| | - Jens Wouters
- KU Leuven, Department of Imaging and Pathology/Biomedical MRI, Leuven, Belgium
| | - Sylvie Brassart-Pasco
- CNRS UMR 7369 Matrice Extracellulaire et Dynamique Cellulaire, Reims, France
- Université de Reims Champagne Ardenne, Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
| | - Uwe Himmelreich
- KU Leuven, Department of Imaging and Pathology/Biomedical MRI, Leuven, Belgium
| | - Bertrand Brassart
- CNRS UMR 7369 Matrice Extracellulaire et Dynamique Cellulaire, Reims, France.
- Université de Reims Champagne Ardenne, Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France.
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2
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Oudart JB, Villemin M, Brassart B, Sellier C, Terryn C, Dupont-Deshorgue A, Monboisse JC, Maquart FX, Ramont L, Brassart-Pasco S. F4, a collagen XIX-derived peptide, inhibits tumor angiogenesis through αvβ3 and α5β1 integrin interaction. Cell Adh Migr 2021; 15:215-223. [PMID: 34308743 PMCID: PMC8312610 DOI: 10.1080/19336918.2021.1951425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
We previously demonstrated that F4 peptide (CNPEDCLYPVSHAHQR) from collagen XIX was able to inhibit melanoma cell migrationin vitro and cancer progression in a mouse melanoma model. The aim of the present work was to study the anti-angiogenic properties of F4 peptide. We demonstrated that F4 peptide inhibited VEGF-induced pseudo-tube formation on Matrigel by endothelial cells and endothelial sprouting in a rat aortic ring assay. By affinity chromatography, we identified αvβ3 and α5β1 integrins as potential receptors for F4 peptide on endothelial cell surface. Using solid phase assays, we proved the direct interaction between F4 and both integrins. Taken together, our results demonstrate that F4 peptide is a potent antitumor agent inhibiting both angiogenesis and tumor cell migration.
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Affiliation(s)
- Jean-Baptiste Oudart
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France.,CHU Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Matthieu Villemin
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France
| | - Bertrand Brassart
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France
| | - Christèle Sellier
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France
| | - Christine Terryn
- PICT, Université de Reims Champagne Ardenne (URCA), Reims, France
| | - Aurélie Dupont-Deshorgue
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France
| | - Jean Claude Monboisse
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France.,CHU Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - François-Xavier Maquart
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France.,CHU Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Laurent Ramont
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France.,CHU Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Sylvie Brassart-Pasco
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France
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3
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Bretaudeau C, Baud S, Dupont-Deshorgue A, Cousin R, Brassart B, Brassart-Pasco S. AG-9, an Elastin-Derived Peptide, Increases In Vitro Oral Tongue Carcinoma Cell Invasion, through an Increase in MMP-2 Secretion and MT1-MMP Expression, in a RPSA-Dependent Manner. Biomolecules 2020; 11:biom11010039. [PMID: 33396696 PMCID: PMC7823410 DOI: 10.3390/biom11010039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/22/2020] [Accepted: 12/26/2020] [Indexed: 12/12/2022] Open
Abstract
Oral tongue squamous cell carcinoma is one of the most prevalent head and neck cancers. During tumor progression, elastin fragments are released in the tumor microenvironment. Among them, we previously identified a nonapeptide, AG-9, that stimulates melanoma progression in vivo in a mouse melanoma model. In the present paper, we studied AG-9 effect on tongue squamous cell carcinoma invasive properties. We demonstrated that AG-9 stimulates cell invasion in vitro in a modified Boyen chamber model. It increases MMP-2 secretion, analyzed by zymography and MT1-MMP expression, studied by Western blot. The stimulatory effect was mediated through Ribosomal Protein SA (RPSA) receptor binding as demonstrated by SiRNA experiments. The green tea-derived polyphenol, (−)-epigallocatechin-3-gallate (EGCG), was previously shown to bind RPSA. Molecular docking experiments were performed to compare the preferred areas of interaction of AG-9 and EGCG with RPSA and suggested overlapping areas. This was confirmed by competition assays. EGCG abolished AG-9-induced invasion, MMP-2 secretion, and MT1-MMP expression.
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Affiliation(s)
- Clara Bretaudeau
- Université de Reims Champagne-Ardenne (URCA), 51100 Reims, France; (C.B.); (S.B.); (A.D.-D.); (R.C.); (B.B.)
- CNRS, UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), 51100 Reims, France
- CHU Reims, Service d’Odontologie, 51100 Reims, France
| | - Stéphanie Baud
- Université de Reims Champagne-Ardenne (URCA), 51100 Reims, France; (C.B.); (S.B.); (A.D.-D.); (R.C.); (B.B.)
- CNRS, UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), 51100 Reims, France
- Plateau de Modélisation Moléculaire Multi-échelle, URCA, 51100 Reims, France
| | - Aurélie Dupont-Deshorgue
- Université de Reims Champagne-Ardenne (URCA), 51100 Reims, France; (C.B.); (S.B.); (A.D.-D.); (R.C.); (B.B.)
- CNRS, UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), 51100 Reims, France
| | - Rémi Cousin
- Université de Reims Champagne-Ardenne (URCA), 51100 Reims, France; (C.B.); (S.B.); (A.D.-D.); (R.C.); (B.B.)
- CNRS, UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), 51100 Reims, France
| | - Bertrand Brassart
- Université de Reims Champagne-Ardenne (URCA), 51100 Reims, France; (C.B.); (S.B.); (A.D.-D.); (R.C.); (B.B.)
- CNRS, UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), 51100 Reims, France
| | - Sylvie Brassart-Pasco
- Université de Reims Champagne-Ardenne (URCA), 51100 Reims, France; (C.B.); (S.B.); (A.D.-D.); (R.C.); (B.B.)
- CNRS, UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), 51100 Reims, France
- Correspondence:
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Vautrin-Glabik A, Devy J, Bour C, Baud S, Choulier L, Hoarau A, Dupont-Deshorgue A, Sellier C, Brassart B, Oudart JB, Ramont L, Monboisse JC, Brassart-Pasco S. Angiogenesis Inhibition by a Short 13 Amino Acid Peptide Sequence of Tetrastatin, the α4(IV) NC1 Domain of Collagen IV. Front Cell Dev Biol 2020; 8:775. [PMID: 32850867 PMCID: PMC7431705 DOI: 10.3389/fcell.2020.00775] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 07/23/2020] [Indexed: 11/13/2022] Open
Abstract
Angiogenesis is defined as the formation of new capillaries by sprouting from the pre-existing microvasculature. It occurs in physiological and pathological processes particularly in tumor growth and metastasis. α1, α2, α3, and α6 NC1 domains from type IV collagen were reported to inhibit tumor angiogenesis. We previously demonstrated that the α4 NC1 domain from type IV collagen, named Tetrastatin, inhibited tumor growth in a mouse melanoma model. The inhibitory activity was located in a 13 amino acid sequence named QS-13. In the present paper, we demonstrate that QS-13 decreases VEGF-induced-angiogenesis in vivo using the Matrigel plug model. Fluorescence molecular tomography allows the measurement of a 65% decrease in Matrigel plug angiogenesis following QS-13 administration. The results are confirmed by CD31 microvessel density analysis on Matrigel plug slices. QS-13 peptide decreases Human Umbilical Vein Endothelial Cells (HUVEC) migration and pseudotube formation in vitro. Relevant QS-13 conformations were obtained from molecular dynamics simulations and docking. A putative interaction of QS-13 with α5β1 integrin was investigated. The interaction was confirmed by affinity chromatography, solid phase assay, and surface plasmon resonance. QS-13 binding site on α5β1 integrin is located in close vicinity to the RGD binding site, as demonstrated by competition assays. Collectively, our results suggest that QS-13 exhibits a mighty anti-angiogenic activity that could be used in cancer treatment and other pathologies with excessive angiogenesis such as hemangioma, psoriasis or diabetes.
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Affiliation(s)
- Alexia Vautrin-Glabik
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France
| | - Jérôme Devy
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France
| | - Camille Bour
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France
| | - Stéphanie Baud
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France.,Plateau de Modélisation Moléculaire Multi-échelle, URCA, Reims, France
| | - Laurence Choulier
- CNRS UMR 7021, Laboratoire de Bioimagerie et Pathologies, Université de Strasbourg, Illkirch, France
| | - Anthony Hoarau
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France
| | - Aurélie Dupont-Deshorgue
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France
| | - Christèle Sellier
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France
| | - Bertrand Brassart
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France
| | - Jean-Baptiste Oudart
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France.,CHU Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Laurent Ramont
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France.,CHU Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Jean Claude Monboisse
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France.,CHU Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Sylvie Brassart-Pasco
- Laboratoire de Biochimie, Université de Reims Champagne-Ardenne (URCA), Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Reims, France
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5
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Nannan L, Oudart JB, Monboisse JC, Ramont L, Brassart-Pasco S, Brassart B. Extracellular Vesicle-Dependent Cross-Talk in Cancer-Focus on Pancreatic Cancer. Front Oncol 2020; 10:1456. [PMID: 32974169 PMCID: PMC7466446 DOI: 10.3389/fonc.2020.01456] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 07/09/2020] [Indexed: 01/10/2023] Open
Abstract
Extracellular vesicles (EVs) like exosomes and shed microvesicles are generated by many different cells. However, among all the cells, cancer cells are now recognized to secrete more EVs than healthy cells. Tumor-derived EVs can be isolated from biofluids such as blood, urine, ascitic fluid, and saliva. Their numerous components (nucleic acids, proteins, and lipids) possess many pleiotropic functions involved in cancer progression. The tumor-derived EVs generated under the influence of tumor microenvironment play distant roles and promote cellular communication by directly interacting with different cells. Moreover, they modulate extracellular matrix remodeling and tumor progression. Tumor-derived EVs are involved in pre-metastatic niche formation, dependent on the EV-associated protein receptors, and in cancer chemoresistance as they transfer drug-resistance-related genes to recipient cells. Recent advances in preclinical and clinical fields suggest their potential use as biomarkers for diagnosis and prognosis as well as for drug delivery in cancer. In this Review, we discuss EV characteristics and pro-tumor capacities, and highlight the future crucial impact of tumor-derived EVs in pancreatic cancer diagnosis and prognosis.
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Affiliation(s)
- Lise Nannan
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire-MEDyC, Reims, France.,Biomedical MRI Group, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Jean-Baptiste Oudart
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire-MEDyC, Reims, France.,CHU Reims, Service de Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Jean Claude Monboisse
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire-MEDyC, Reims, France.,CHU Reims, Service de Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Laurent Ramont
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire-MEDyC, Reims, France.,CHU Reims, Service de Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Sylvie Brassart-Pasco
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire-MEDyC, Reims, France
| | - Bertrand Brassart
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire-MEDyC, Reims, France
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6
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Lefebvre T, Rybarczyk P, Bretaudeau C, Vanlaeys A, Cousin R, Brassart-Pasco S, Chatelain D, Dhennin-Duthille I, Ouadid-Ahidouch H, Brassart B, Gautier M. TRPM7/RPSA Complex Regulates Pancreatic Cancer Cell Migration. Front Cell Dev Biol 2020; 8:549. [PMID: 32733880 PMCID: PMC7360683 DOI: 10.3389/fcell.2020.00549] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 06/10/2020] [Indexed: 12/20/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a malignancy with a very poor prognosis due to highly metastatic profile. Cell migration is an essential step of the metastatic cascade allowing cancer cells to spread toward target tissues. Recent studies strongly suggest that bioactive elastin peptides, also named elastokines or elastin-derived peptides (EDPs), are released in the extracellular microenvironment during tumoral remodeling of the stroma. EDPs stimulate cancer cell migration by interacting with their membrane receptor, ribosomal protein SA (RPSA). Others membrane proteins like ion channels are also involved in cancer cell migration. It has been recently shown that the transient receptor potential melastatin-related 7 (TRPM7) channel regulates PDAC cell migration and invasion. The objective of this work was to study the effect of EDPs on TRPM7 channel in human pancreatic cancer cells. We showed that EDPs promote MIA PaCa-2 cell migration using Boyden chamber assay. Cells transfected with a siRNA targeting TRPM7 were not able to migrate in response to EDPs indicating that TRPM7 regulated cell migration induced by these peptides. Moreover, EDPs were able to stimulate TRPM7 currents recorded by Patch-Clamp. Finally, we showed that TRPM7 channels and RPSA receptors are colocalized at the plasma membrane of human pancreatic cancer cells. Taken together, our data suggest that TRPM7/RPSA complex regulated human pancreatic cancer cell migration. This complex may be a promising therapeutic target in PDAC.
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Affiliation(s)
- Thibaut Lefebvre
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR-UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), Amiens, France
| | - Pierre Rybarczyk
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR-UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), Amiens, France.,Service d'Anatomie et Cytologie Pathologiques, CHU Amiens-Picardie, Amiens, France
| | - Clara Bretaudeau
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France
| | - Alison Vanlaeys
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR-UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), Amiens, France
| | - Rémi Cousin
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France
| | - Sylvie Brassart-Pasco
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France
| | - Denis Chatelain
- Service d'Anatomie et Cytologie Pathologiques, CHU Amiens-Picardie, Amiens, France
| | - Isabelle Dhennin-Duthille
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR-UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), Amiens, France
| | - Halima Ouadid-Ahidouch
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR-UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), Amiens, France
| | - Bertrand Brassart
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, France
| | - Mathieu Gautier
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR-UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), Amiens, France
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7
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Brassart-Pasco S, Dalstein V, Brassart B, Dewolf M, Clavel C, Oudart JB. Immunotherapy in non-small-cell lung cancer: from targeted molecules to resistance patterns. Pharmacogenomics 2020; 21:705-720. [PMID: 32567537 DOI: 10.2217/pgs-2020-0021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Immunotherapies are now considered as a pillar of non-small-cell lung cancer treatment. The main targets of immune-checkpoint inhibitors (ICI) are programmed cell death 1/programmed cell death ligand 1 and cytotoxic T-lymphocyte antigen 4, aiming at restoring antitumor immunity. Despite durable responses observed in some patients, all patients do not benefit from the treatment and almost all responders ultimately relapse after some time. In this review, we discuss the biomarkers that could be used to predict response to ICI, the current indications of ICI in non-small-cell lung cancer, the mechanisms inducing tumor-cell intrinsic or extrinsic resistance to ICI and finally, the potential treatment response monitoring.
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Affiliation(s)
- Sylvie Brassart-Pasco
- Université de Reims Champagne-Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, 51100 Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire - MEDyC, 51100 Reims, France
| | - Véronique Dalstein
- Université de Reims Champagne Ardenne, INSERM, P3Cell UMR-S1250, SFR CAP-SANTE, 51100 Reims, France.,CHU Reims, Service de Pathologie, 51100 Reims, France
| | - Bertrand Brassart
- Université de Reims Champagne-Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, 51100 Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire - MEDyC, 51100 Reims, France
| | - Maxime Dewolf
- CHU Reims, Service des maladies respiratoires et allergiques, 51100 Reims, France
| | - Christine Clavel
- Université de Reims Champagne Ardenne, INSERM, P3Cell UMR-S1250, SFR CAP-SANTE, 51100 Reims, France.,CHU Reims, Service de Pathologie, 51100 Reims, France
| | - Jean-Baptiste Oudart
- Université de Reims Champagne-Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, 51100 Reims, France.,CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire - MEDyC, 51100 Reims, France.,CHU Reims, Service de Biochimie-Pharmacologie-Toxicologie, 51100 Reims, France
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8
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Brassart-Pasco S, Brézillon S, Brassart B, Ramont L, Oudart JB, Monboisse JC. Tumor Microenvironment: Extracellular Matrix Alterations Influence Tumor Progression. Front Oncol 2020; 10:397. [PMID: 32351878 PMCID: PMC7174611 DOI: 10.3389/fonc.2020.00397] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/05/2020] [Indexed: 12/12/2022] Open
Abstract
The tumor microenvironment (TME) is composed of various cell types embedded in an altered extracellular matrix (ECM). ECM not only serves as a support for tumor cell but also regulates cell-cell or cell-matrix cross-talks. Alterations in ECM may be induced by hypoxia and acidosis, by oxygen free radicals generated by infiltrating inflammatory cells or by tumor- or stromal cell-secreted proteases. A poorer diagnosis for patients is often associated with ECM alterations. Tumor ECM proteome, also named cancer matrisome, is strongly altered, and different ECM protein signatures may be defined to serve as prognostic biomarkers. Collagen network reorganization facilitates tumor cell invasion. Proteoglycan expression and location are modified in the TME and affect cell invasion and metastatic dissemination. ECM macromolecule degradation by proteases may induce the release of angiogenic growth factors but also the release of proteoglycan-derived or ECM protein fragments, named matrikines or matricryptins. This review will focus on current knowledge and new insights in ECM alterations, degradation, and reticulation through cross-linking enzymes and on the role of ECM fragments in the control of cancer progression and their potential use as biomarkers in cancer diagnosis and prognosis.
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Affiliation(s)
- Sylvie Brassart-Pasco
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
- CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire - MEDyC, Reims, France
| | - Stéphane Brézillon
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
- CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire - MEDyC, Reims, France
| | - Bertrand Brassart
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
- CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire - MEDyC, Reims, France
| | - Laurent Ramont
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
- CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire - MEDyC, Reims, France
- CHU Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Jean-Baptiste Oudart
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
- CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire - MEDyC, Reims, France
- CHU Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Jean Claude Monboisse
- Université de Reims Champagne Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
- CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire - MEDyC, Reims, France
- CHU Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
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9
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Vanlaeys A, Fouquet G, Kischel P, Hague F, Pasco-Brassart S, Lefebvre T, Rybarczyk P, Dhennin-Duthille I, Brassart B, Ouadid-Ahidouch H, Gautier M. Cadmium exposure enhances cell migration and invasion through modulated TRPM7 channel expression. Arch Toxicol 2020; 94:735-747. [PMID: 32080757 DOI: 10.1007/s00204-020-02674-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 02/11/2020] [Indexed: 12/26/2022]
Abstract
Cadmium is a xenobiotic involved in neoplastic transformation. Cadmium enters the cells through divalent cation transporters including the Transient Receptor Potential Melastatin-related 7 (TRPM7) which is known to be involved in cancer cell fate. This work aimed to study the role of TRPM7 in neoplastic transformation induced by cadmium exposure in non-cancer epithelial cells. Non-cancer epithelial cells were chronically exposed to low-dose of cadmium. TRPM7 expression and function were studied by Western-Blot, Patch-Clamp and calcium and magnesium imaging. Finally, cell migration and invasion were studied by Boyden chamber assays. Chronic cadmium exposure induced TRPM7 overexpression and increased the membrane currents (P < 0.001). Cells exposed to cadmium had higher intracellular calcium and magnesium levels (P < 0.05). TRPM7 silencing restored calcium levels but strongly decreased intracellular magnesium concentration (P < 0.001). Moreover, cadmium exposure enhanced both cell migration and invasion, but TRPM7 silencing strongly decreased these features (P < 0.001). Furthermore, mammary epithelial cells exposed to cadmium became rounded and had less cell-to-cell junctions. Cadmium exposure decreased epithelial markers while the mesenchymal ones were increased. Importantly, TRPM7 silencing was able to reverse these phenotypic modifications (P < 0.05). To summarize, our data show that chronic cadmium exposure enhanced TRPM7 expression and activity in non-cancer epithelial cells. TRPM7 overexpression induced intracellular magnesium increase and stimulated cell migration and invasion. These neoplastic properties could be linked to a TRPM7-dependent epithelial-to-mesenchymal transition reprogramming in cell exposed to cadmium. These findings provide new insights into the regulation of cell fates by cadmium exposure.
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Affiliation(s)
- Alison Vanlaeys
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Grégory Fouquet
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Philippe Kischel
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Frédéric Hague
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Sylvie Pasco-Brassart
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), 51095, Amiens, France
| | - Thibaut Lefebvre
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Pierre Rybarczyk
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
- Anatomie et Cytologie Pathologiques, CHU Amiens-Picardie, Amiens, France
| | - Isabelle Dhennin-Duthille
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Bertrand Brassart
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), 51095, Amiens, France
| | - Halima Ouadid-Ahidouch
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Mathieu Gautier
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France.
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10
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Lambert E, Fuselier E, Ramont L, Brassart B, Dukic S, Oudart JB, Dupont-Deshorgue A, Sellier C, Machado C, Dauchez M, Monboisse JC, Maquart FX, Baud S, Brassart-Pasco S. Conformation-dependent binding of a Tetrastatin peptide to α vβ 3 integrin decreases melanoma progression through FAK/PI 3K/Akt pathway inhibition. Sci Rep 2018; 8:9837. [PMID: 29959360 PMCID: PMC6026150 DOI: 10.1038/s41598-018-28003-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 06/11/2018] [Indexed: 02/08/2023] Open
Abstract
Tetrastatin, a 230 amino acid sequence from collagen IV, was previously demonstrated to inhibit melanoma progression. In the present paper, we identified the minimal active sequence (QKISRCQVCVKYS: QS-13) that reproduced the anti-tumor effects of whole Tetrastatin in vivo and in vitro on melanoma cell proliferation, migration and invasion. We demonstrated that QS-13 binds to SK-MEL-28 melanoma cells through the αvβ3 integrin using blocking antibody and β3 integrin subunit siRNAs strategies. Relevant QS-13 conformations were extracted from molecular dynamics simulations and their interactions with αVβ3 integrin were analyzed by docking experiments to determine the binding areas and the QS-13 amino acids crucial for the binding. The in silico results were confirmed by in vitro experiments. Indeed, QS-13 binding to SK-MEL-28 was dependent on the presence of a disulfide-bound as shown by mass spectroscopy and the binding site on αVβ3 was located in close vicinity to the RGD binding site. QS-13 binding inhibits the FAK/PI3K/Akt pathway, a transduction pathway that is largely involved in tumor cell proliferation and migration. Taken together, our results demonstrate that the QS-13 peptide binds αvβ3 integrin in a conformation-dependent manner and is a potent antitumor agent that could target cancer cells through αVβ3.
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Affiliation(s)
- Eléonore Lambert
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France.,Laboratoire de Recherche sur les Nanosciences (LRN), EA4682, Université de Reims Champagne-Ardenne, Reims, F-51685, Reims, France
| | - Eloïse Fuselier
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France
| | - Laurent Ramont
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, F-51092, France
| | - Bertrand Brassart
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France
| | - Sylvain Dukic
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France
| | - Jean-Baptiste Oudart
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, F-51092, France
| | - Aurélie Dupont-Deshorgue
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France
| | - Christèle Sellier
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France
| | - Carine Machado
- CNRS UMR 7312, Institut de Chimie Moléculaire de Reims, Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France
| | - Manuel Dauchez
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France.,Plateau de Modélisation Moléculaire Multi-échelle, Université de Reims Champagne Ardenne (URCA), Reims, F-51687, France
| | - Jean-Claude Monboisse
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, F-51092, France
| | - François-Xavier Maquart
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, F-51092, France
| | - Stéphanie Baud
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France.,Plateau de Modélisation Moléculaire Multi-échelle, Université de Reims Champagne Ardenne (URCA), Reims, F-51687, France
| | - Sylvie Brassart-Pasco
- UMR CNRS/URCA 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), Reims, F-51100, France.
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11
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Da Silva J, Lameiras P, Beljebbar A, Berquand A, Villemin M, Ramont L, Dukic S, Nuzillard JM, Molinari M, Gautier M, Brassart-Pasco S, Brassart B. Structural characterization and in vivo pro-tumor properties of a highly conserved matrikine. Oncotarget 2018; 9:17839-17857. [PMID: 29707150 PMCID: PMC5915158 DOI: 10.18632/oncotarget.24894] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 02/25/2018] [Indexed: 01/13/2023] Open
Abstract
Elastin-derived peptides (EDPs) exert protumor activities by increasing tumor growth, migration and invasion. A number of studies have highlighted the potential of VGVAPG consensus sequence-derived elastin-like polypeptides whose physicochemical properties and biocompatibility are particularly suitable for in vivo applications, such as drug delivery and tissue engineering. However, among the EDPs, the influence of elastin-derived nonapeptides (xGxPGxGxG consensus sequence) remains unknown. Here, we show that the AGVPGLGVG elastin peptide (AG-9) present in domain-26 of tropoelastin is more conserved than the VGVAPG elastin peptide (VG-6) from domain-24 in mammals. The results demonstrate that the structural features of AG-9 and VG-6 peptides are similar. CD, NMR and FTIR spectroscopies show that AG-9 and VG-6 present the same conformation, which includes a mixture of random coils and β-turn structures. On the other hand, the supraorganization differs between peptides, as demonstrated by AFM. The VG-6 peptide gathers in spots, whereas the AG-9 peptide aggregates into short amyloid-like fibrils. An in vivo study showed that AG-9 peptides promote tumor progression to a greater extent than do VG-6 peptides. These results were confirmed by in vitro studies such as 2D and 3D proliferation assays, migration assays, adhesion assays, proteinase secretion studies and pseudotube formation assays to investigate angiogenesis. Our findings suggest the possibility that the AG-9 peptide present in patient sera may dramatically influence cancer progression and could be used in the design of new, innovative antitumor therapies.
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Affiliation(s)
- Jordan Da Silva
- UMR CNRS/URCA 7369 MEDyC, Université de Reims Champagne Ardenne, UFR Médecine, 51095 Reims, France
| | - Pedro Lameiras
- ICMR, CNRS UMR 7312, UFR de Pharmacie, Université de Reims Champagne-Ardenne, 51096 Reims, France
| | - Abdelilah Beljebbar
- UMR CNRS/URCA 7369 MEDyC, Université de Reims Champagne Ardenne, UFR Médecine, 51095 Reims, France
| | - Alexandre Berquand
- Laboratoire de Recherche en Nanosciences, LRN-EA4682, Université de Reims Champagne-Ardenne, 51100 Reims, France
| | - Matthieu Villemin
- UMR CNRS/URCA 7369 MEDyC, Université de Reims Champagne Ardenne, UFR Médecine, 51095 Reims, France
| | - Laurent Ramont
- UMR CNRS/URCA 7369 MEDyC, Université de Reims Champagne Ardenne, UFR Médecine, 51095 Reims, France
- CHU de Reims, Laboratoire Central de Biochimie, 51092 Reims, France
| | - Sylvain Dukic
- UMR CNRS/URCA 7369 MEDyC, Université de Reims Champagne Ardenne, UFR Médecine, 51095 Reims, France
| | - Jean-Marc Nuzillard
- ICMR, CNRS UMR 7312, UFR de Pharmacie, Université de Reims Champagne-Ardenne, 51096 Reims, France
| | - Michael Molinari
- Laboratoire de Recherche en Nanosciences, LRN-EA4682, Université de Reims Champagne-Ardenne, 51100 Reims, France
| | - Mathieu Gautier
- Laboratoire de Physiologie Cellulaire et Moléculaire, LPCM - EA4667, Université de Picardie Jules Verne, UFR Sciences, F-80039 Amiens, France
| | - Sylvie Brassart-Pasco
- UMR CNRS/URCA 7369 MEDyC, Université de Reims Champagne Ardenne, UFR Médecine, 51095 Reims, France
| | - Bertrand Brassart
- UMR CNRS/URCA 7369 MEDyC, Université de Reims Champagne Ardenne, UFR Médecine, 51095 Reims, France
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12
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Rybarczyk P, Vanlaeys A, Brassart B, Dhennin-Duthille I, Chatelain D, Sevestre H, Ouadid-Ahidouch H, Gautier M. The Transient Receptor Potential Melastatin 7 Channel Regulates Pancreatic Cancer Cell Invasion through the Hsp90α/uPA/MMP2 pathway. Neoplasia 2017; 19:288-300. [PMID: 28284058 PMCID: PMC5345960 DOI: 10.1016/j.neo.2017.01.004] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 01/05/2017] [Accepted: 01/13/2017] [Indexed: 12/28/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is an aggressive malignancy with a very poor prognosis. There is an urgent need to better understand the molecular mechanisms that regulate PDAC cell aggressiveness. The transient receptor potential melastatin 7 (TRPM7) is a nonselective cationic channel that mainly conducts Ca2+ and Mg2+. TRPM7 is overexpressed in numerous malignancies including PDAC. In the present study, we used the PANC-1 and MIA PaCa-2 cell lines to specifically assess the role of TRPM7 in cell invasion and matrix metalloproteinase secretion. We show that TRPM7 regulates Mg2+ homeostasis and constitutive cation entry in both PDAC cell lines. Moreover, cell invasion is strongly reduced by TRPM7 silencing without affecting the cell viability. Conditioned media were further studied, by gel zymography, to detect matrix metalloproteinase (MMP) secretion in PDAC cells. Our results show that MMP-2, urokinase plasminogen activator (uPA), and heat-shock protein 90α (Hsp90α) secretions are significantly decreased in TRPM7-deficient PDAC cells. Moreover, TRPM7 expression in human PDAC lymph node metastasis is correlated to the channel expression in primary tumor. Taken together, our results show that TRPM7 is involved in PDAC cell invasion through regulation of Hsp90α/uPA/MMP-2 proteolytic axis, confirming that this channel could be a promising biomarker and possibly a target for PDAC metastasis therapy.
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Affiliation(s)
- Pierre Rybarczyk
- Laboratoire de Physiologie Cellulaire et Moléculaire-EA4667, UFR Sciences, Université de Picardie Jules Verne, F-80039 Amiens, France; SFR CAP-Santé (FED 4231)
| | - Alison Vanlaeys
- Laboratoire de Physiologie Cellulaire et Moléculaire-EA4667, UFR Sciences, Université de Picardie Jules Verne, F-80039 Amiens, France; SFR CAP-Santé (FED 4231)
| | - Bertrand Brassart
- SFR CAP-Santé (FED 4231); UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), F-51095 Reims, France
| | - Isabelle Dhennin-Duthille
- Laboratoire de Physiologie Cellulaire et Moléculaire-EA4667, UFR Sciences, Université de Picardie Jules Verne, F-80039 Amiens, France; SFR CAP-Santé (FED 4231)
| | - Denis Chatelain
- Service d'anatomie pathologique, CHU d'Amiens, Université de Picardie Jules Verne, F-80000 Amiens, France, France
| | - Henri Sevestre
- Laboratoire de Physiologie Cellulaire et Moléculaire-EA4667, UFR Sciences, Université de Picardie Jules Verne, F-80039 Amiens, France; SFR CAP-Santé (FED 4231); Service d'anatomie pathologique, CHU d'Amiens, Université de Picardie Jules Verne, F-80000 Amiens, France, France
| | - Halima Ouadid-Ahidouch
- Laboratoire de Physiologie Cellulaire et Moléculaire-EA4667, UFR Sciences, Université de Picardie Jules Verne, F-80039 Amiens, France; SFR CAP-Santé (FED 4231)
| | - Mathieu Gautier
- Laboratoire de Physiologie Cellulaire et Moléculaire-EA4667, UFR Sciences, Université de Picardie Jules Verne, F-80039 Amiens, France; SFR CAP-Santé (FED 4231).
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13
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Mohsen A, Collery P, Garnotel R, Brassart B, Etique N, Mohamed Sabry G, Elsherif Hassan R, Jeannesson P, Desmaële D, Morjani H. A new gallium complex inhibits tumor cell invasion and matrix metalloproteinase MMP-14 expression and activity. Metallomics 2017; 9:1176-1184. [DOI: 10.1039/c7mt00049a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this study, we investigated the effect of [N-(5-chloro-2-hydroxyphenyl)-l-aspartato] chlorogallate (GS2) on tumor cell invasion and on the expression and activity of MMPs.
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14
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Merghoub N, El Btaouri H, Benbacer L, Gmouh S, Trentesaux C, Brassart B, Attaleb M, Madoulet C, Wenner T, Amzazi S, Morjani H, El Mzibri M. Tomentosin Induces Telomere Shortening and Caspase-Dependant Apoptosis in Cervical Cancer Cells. J Cell Biochem 2016; 118:1689-1698. [PMID: 27922187 DOI: 10.1002/jcb.25826] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Accepted: 11/30/2016] [Indexed: 12/23/2022]
Abstract
Tomentosin, a natural sesquiterpene lactone purified from of Inula viscosa L., was investigated for its anti-proliferative, telomere shortening, and apoptotic effects on human cervical cancer HeLa and SiHa cell lines. Tomentosin was found to inhibit the growth of SiHa and HeLa cell lines in dose and time-dependent manner (IC50 values of 7.10 ± 0.78 μM and 5.87 ± 0.36 μM, respectively after 96 h of treatment). As evidenced by TTAGGG telomere length assay, tomentosin target specifically the telomeric overhang lengthening. This was confirmed by the evaluation of the cytotoxic effects of tomentosin in the foetal fibroblast Wi38 and JW10 cells which were derived from Wi38 and express hTERT, the telomerase catalytic subunit. We found that JW10 cells are 4.7-fold more sensitive to tomentosin which argues for telomere as its specific target. Furthermore, we found that tomentosin mediate this cytotoxic effect by inducing apoptosis and cell cycle arrest at G2/M phase. Morphological features of treated cells, as evidenced by Hoechst 33324 staining, revealed that the cytotoxic effect was due to induction of apoptosis. This was accompanied by pro-caspase-3 cleavage, an increase in caspase-3 activity and a cleavage of poly (ADP-ribose) polymerase (PARP). Moreover, tomentosin induced a decrease in mitochondrial membrane potential (ΔΨm) and an increase in reactive oxygen species (ROS), accompanied by a decrease in Bcl-2 expression. This indicates that tomentosin-induced apoptosis may involve a mitochondria-mediated signaling pathway. This study provides the first evidence that tomentosin targets telomere machinery and induces apoptosis in cervical cancer cells. The molecular mechanism underlying tomentosin-induced apoptosis may involve a mitochondria-mediated signaling pathway. J. Cell. Biochem. 118: 1689-1698, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Nawel Merghoub
- Laboratoire de Biochimie-Immunologie, Faculté des Sciences de Rabat, Agdal, Morocco.,Unité Biologie & Recherche Médicale CNESTEN, Rabat, Morocco.,MEDyC CNRS UMR7369, UFR Sciences, UFR Médecine et UFR Pharmacie, Reims, France.,Green Biotechnology Center, MAScIR (Moroccan foundation for Advanced Science, Innovation and Research), Rabat, Morocco
| | - Hassan El Btaouri
- MEDyC CNRS UMR7369, UFR Sciences, UFR Médecine et UFR Pharmacie, Reims, France
| | - Laila Benbacer
- Unité Biologie & Recherche Médicale CNESTEN, Rabat, Morocco
| | - Saïd Gmouh
- Centre National Pour la Recherche Scientifique et Technique, Rabat, Morocco
| | - Chantal Trentesaux
- University of Reims and MNHN, INSERM U565, CNRS UMR 7196, 75005, Paris, France
| | - Bertrand Brassart
- MEDyC CNRS UMR7369, UFR Sciences, UFR Médecine et UFR Pharmacie, Reims, France
| | | | - Claudie Madoulet
- MEDyC CNRS UMR7369, UFR Sciences, UFR Médecine et UFR Pharmacie, Reims, France
| | - Thomas Wenner
- Laboratoire de Pathologie de la cellule B Indolente, UMR CNRS 5239, Faculté de Médecine Lyon Sud, France
| | - Saaid Amzazi
- Laboratoire de Biochimie-Immunologie, Faculté des Sciences de Rabat, Agdal, Morocco
| | - Hamid Morjani
- MEDyC CNRS UMR7369, UFR Sciences, UFR Médecine et UFR Pharmacie, Reims, France
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15
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Oudart JB, Doué M, Vautrin A, Brassart B, Sellier C, Dupont-Deshorgue A, Monboisse JC, Maquart FX, Brassart-Pasco S, Ramont L. The anti-tumor NC1 domain of collagen XIX inhibits the FAK/ PI3K/Akt/mTOR signaling pathway through αvβ3 integrin interaction. Oncotarget 2016; 7:1516-28. [PMID: 26621838 PMCID: PMC4811477 DOI: 10.18632/oncotarget.6399] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 11/14/2015] [Indexed: 11/25/2022] Open
Abstract
Type XIX collagen is a minor collagen associated with basement membranes. It was isolated for the first time in a human cDNA library from rhabdomyosarcoma and belongs to the FACITs family (Fibril Associated Collagens with Interrupted Triple Helices). Previously, we demonstrated that the NC1 domain of collagen XIX (NC1(XIX)) exerts anti-tumor properties on melanoma cells by inhibiting their migration and invasion. In the present work, we identified for the first time the integrin αvβ3 as a receptor of NC1(XIX). Moreover, we demonstrated that NC1(XIX) inhibits the FAK/PI3K/Akt/mTOR pathway, by decreasing the phosphorylation and activity of the major proteins involved in this pathway. On the other hand, NC1(XIX) induced an increase of GSK3β activity by decreasing its degree of phosphorylation. Treatments targeting this central signaling pathway in the development of melanoma are promising and new molecules should be developed. NC1(XIX) seems to have the potential for the design of new anti-cancer drugs.
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Affiliation(s)
- Jean-Baptiste Oudart
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, France
| | - Manon Doué
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Alexia Vautrin
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Bertrand Brassart
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Christèle Sellier
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Aurelie Dupont-Deshorgue
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Jean-Claude Monboisse
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, France
| | - François-Xavier Maquart
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, France
| | - Sylvie Brassart-Pasco
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Laurent Ramont
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, France
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16
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Merghoub N, El Btaouri H, Benbacer L, Gmouh S, Trentesaux C, Brassart B, Terryn C, Attaleb M, Madoulet C, Benjouad A, Amzazi S, El Mzibri M, Morjani H. Inula Viscosa Extracts Induces Telomere Shortening and Apoptosis in Cancer Cells and Overcome Drug Resistance. Nutr Cancer 2016; 68:131-43. [PMID: 26771897 DOI: 10.1080/01635581.2016.1115105] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Telomerase is activated in human papillomavirus (HPV) positive cervical cancer and targeting telomeres offers a novel anticancer therapeutic strategy. In this study, the telomere targeting properties, the cytotoxic as well as the pro-apoptotic effects of hexane (IV-HE) and dichloromethane (IV-DF) fractions from Inula viscosa L. extracts were investigated on human cervical HeLa and SiHa cancer cells. Our data demonstrate that IV-HE and IV-DF extracts were able to inhibit cell growth in HeLa and SiHa cells in a dose-dependent manner and studied resistant cell lines exhibited a resistance factor less than 2 when treated with the extracts. IV-HE and IV-DF extracts were able to inhibit telomerase activity and to induce telomere shortening as shown by telomeric repeat amplification protocol and TTAGGG telomere length assay, respectively. The sensitivity of fibroblasts to the extracts was increased when telomerase was expressed. Finally, IV-HE and IV-DF were able to induce apoptosis as evidenced by an increase in annexin-V labeling and caspase-3 activity. This study provides the first evidence that the IV-HE and IV-DF extracts from Inula viscosa L. target telomeres induce apoptosis and overcome drug resistance in tumor cells. Future studies will focus on the identification of the molecules involved in the anticancer activity.
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Affiliation(s)
- Nawal Merghoub
- a Laboratory of Biochemistry and Immunology, Faculty of Sciences, Rabat, Morocco Department of Biology and Medical Research CNESTEN, Rabat, Morocco and MEDyC CNRS UMR 7369, Faculty of Pharmacy , Reims , France
| | | | - Laila Benbacer
- c Department of Biology and Medical Research CNESTEN , Rabat , Morocco
| | - Saïd Gmouh
- d Faculté des Sciences Ben M'sik , Casablanca , Morocco
| | | | | | | | - Mohammed Attaleb
- h Department of Biology and Medical Research CNESTEN , Rabat , Morocco
| | | | - Abdelaziz Benjouad
- j Laboratory of Biochemistry and Immunology, Faculty of Sciences , Rabat , Morocco
| | - Saaïd Amzazi
- j Laboratory of Biochemistry and Immunology, Faculty of Sciences , Rabat , Morocco
| | | | - Hamid Morjani
- l MEDyC CNRS UMR 7369, Faculty of Pharmacy , Reims , France
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17
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Oudart JB, Brassart-Pasco S, Vautrin A, Sellier C, Machado C, Dupont-Deshorgue A, Brassart B, Baud S, Dauchez M, Monboisse JC, Harakat D, Maquart FX, Ramont L. Plasmin releases the anti-tumor peptide from the NC1 domain of collagen XIX. Oncotarget 2016; 6:3656-68. [PMID: 25668817 PMCID: PMC4414144 DOI: 10.18632/oncotarget.2849] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 12/05/2014] [Indexed: 02/07/2023] Open
Abstract
During tumor invasion, tumor cells degrade the extracellular matrix. Basement membrane degradation is responsible for the production of peptides with anti-tumor properties. Type XIX collagen is associated with basement membranes in vascular, neuronal, mesenchymal and epithelial tissues. Previously, we demonstrated that the non-collagenous NC1, C-terminal, domain of collagen XIX [NC1(XIX)] inhibits the migration capacities of tumor cells and exerts a strong inhibition of tumor growth. Here, we demonstrate that plasmin, one of the most important enzyme involved in tumor invasion, was able to release a fragment of NC1(XIX), which retained the anti-tumor activity. Molecular modeling studies showed that NC1(XIX) and the anti-tumor fragment released by plasmin (F4) adopted locally the same type I β-turn conformation. This suggests that the anti-tumor effect is conformation-dependent. This study demonstrates that collagen XIX is a novel proteolytic substrate for plasmin. Such release may constitute a defense of the organism against tumor invasion.
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Affiliation(s)
- Jean-Baptiste Oudart
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, France
| | - Sylvie Brassart-Pasco
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Alexia Vautrin
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Christèle Sellier
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Carine Machado
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, CNRS UMR N°7312, Faculté de Pharmacie, Reims, France
| | - Aurelie Dupont-Deshorgue
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Bertrand Brassart
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - S Baud
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,Plateau de Modélisation Moléculaire Multi-échelle, UFR Sciences Exactes et Naturelles, Université de Reims Champagne-Ardenne, Reims, France
| | - Manuel Dauchez
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,Plateau de Modélisation Moléculaire Multi-échelle, UFR Sciences Exactes et Naturelles, Université de Reims Champagne-Ardenne, Reims, France
| | - Jean-Claude Monboisse
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, France
| | - Dominique Harakat
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, CNRS UMR N°7312, Faculté de Pharmacie, Reims, France
| | - François-Xavier Maquart
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, France
| | - Laurent Ramont
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,CHU de Reims, Laboratoire Central de Biochimie, Reims, France
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18
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Baud S, Duca L, Bochicchio B, Brassart B, Belloy N, Pepe A, Dauchez M, Martiny L, Debelle L. Elastin peptides in aging and pathological conditions. Biomol Concepts 2015; 4:65-76. [PMID: 25436566 DOI: 10.1515/bmc-2011-0062] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Accepted: 08/29/2012] [Indexed: 11/15/2022] Open
Abstract
Elastin is the protein responsible for the resilience of vertebrate tissue. It is an extremely stable protein deposited during the early stages of life and experiencing almost no renewal. As a consequence, it can be considered that each individual has an elastin capital for life. Despite its extreme stability, elastin can be degraded by several enzymes termed elastases. Elastases are among the most aggressive proteases, and their presence is increased with age. As a consequence, elastin fragmentation resulting in the generation of elastin peptides is one of the hallmarks of aging. This review will examine their nature and further expose our current understanding of the role played by these peptides in aging and their contribution to tissue homeostasis and several pathologies.
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19
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Aires V, Brassart B, Carlier A, Scagliarini A, Mandard S, Limagne E, Solary E, Martiny L, Tarpin M, Delmas D. A role for peroxisome proliferator-activated receptor gamma in resveratrol-induced colon cancer cell apoptosis. Mol Nutr Food Res 2014; 58:1785-94. [PMID: 24975132 DOI: 10.1002/mnfr.201300962] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 03/31/2014] [Accepted: 05/01/2014] [Indexed: 12/22/2022]
Abstract
SCOPE Resveratrol may function as a chemopreventive agent. A recent clinical study demonstrates a reduction in tumor cell proliferation in colorectal patients receiving repeated oral ingestion of resveratrol. However, gaps remain in our knowledge of the molecular mechanisms by which resveratrol exerts its chemopreventive effect. We have previously demonstrated that resveratrol induces apoptosis in colon cancer cells and that resveratrol can sensitize chemoresistant colon cancer cells to various drugs. Based on its ability to activate peroxisome proliferator-activated receptor gamma (PPARγ) in colon cancer cells, we sought to determine the implication of this nuclear transcription factor in resveratrol-induced apoptosis. METHODS AND RESULTS Transient transfection of cancer cells with a dominant-negative PPARγ mutant or treatment with a PPARγ antagonist (GW9662) reversed the inhibitory effect of resveratrol. Moreover, GW9662 prevented disruption of the cell cycle induced by resveratrol and consequently abrogated resveratrol-induced apoptosis. Tumor cell death was potentiated by combining resveratrol with rosiglitazone, a PPARγ agonist. CONCLUSION The results show that PPARγ plays a role in resveratrol-induced apoptosis of colon carcinoma cells. The combination of resveratrol with a PPARγ agonist could be a promising pharmacological approach for treatment of colorectal cancer.
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Affiliation(s)
- Virginie Aires
- Université de Bourgogne, Dijon, France; Centre de Recherche INSERM U866 - Equipe Chimiothérapie, Métabolisme Lipidique et Réponse Immunitaire Antitumorale, Dijon, France
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20
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Rusciani A, Duca L, Brassart B, Martiny L, Debelle L. From elastin peptides to neuraminidase-1-dependent lactosylceramide generation. CR CHIM 2012. [DOI: 10.1016/j.crci.2011.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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21
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Thevenard J, Ramont L, Devy J, Brassart B, Dupont-Deshorgue A, Floquet N, Schneider L, Ouchani F, Terryn C, Maquart FX, Monboisse JC, Brassart-Pasco S. The YSNSG cyclopeptide derived from tumstatin inhibits tumor angiogenesis by down-regulating endothelial cell migration. Int J Cancer 2010; 126:1055-66. [PMID: 19551865 DOI: 10.1002/ijc.24688] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
We previously demonstrated that the CNYYSNS peptide derived from tumstatin inhibited in vivo tumor progression. The YSNS motif formed a beta-turn crucial for biological activity. More recently, a YSNSG cyclopeptide with a constrained beta-turn on the YSNS residues was designed. Intraperitoneal administration of the YSNSG cyclopeptide inhibited in vivo melanoma progression more efficiently than the native linear peptide. In the present article, we showed that the YSNSG cyclopeptide also triggered an inhibition of in vivo tumor neovascularization and we further analyzed its in vitroantiangiogenic effect. The YSNSG cyclopeptide did not alter endothelial cell proliferation but inhibited cell migration by 83% in an in vitro wound healing model. The inhibition was mediated by a decrease in active MT1-MMP at the migration front as well as a decrease in u-PA and u-PAR expression. The cyclopeptide also altered beta1-integrin distribution in endothelial cell lamellipodia, induced a strong decrease in the phosphorylated focal adhesion kinase (p125(FAK)), disorganized F-actin stress fibers and decreased the number of lamellipodia, resulting in a non migratory phenotype. Our results confirm the YSNSG cyclopeptide as a potent antitumor agent, through both the inhibition of invasive properties of tumor cells and the antiangiogenic activity.
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Affiliation(s)
- Jessica Thevenard
- CNRS UMR 6237, Université de Reims Champagne-Ardenne, CHU de Reims, Reims, France
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22
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Laronze-Cochard M, Cochard F, Daras E, Lansiaux A, Brassart B, Vanquelef E, Prost E, Nuzillard JM, Baldeyrou B, Goosens JF, Lozach O, Meijer L, Riou JF, Henon E, Sapi J. Synthesis and biological evaluation of new penta- and heptacyclic indolo- and quinolinocarbazole ring systems obtained via Pd0 catalysed reductive N-heteroannulation. Org Biomol Chem 2010; 8:4625-36. [DOI: 10.1039/c0ob00149j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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23
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El Bakali J, Klupsch F, Guédin A, Brassart B, Fontaine G, Farce A, Roussel P, Houssin R, Bernier JL, Chavatte P, Mergny JL, Riou JF, Hénichart JP. 2,6-Diphenylthiazolo[3,2-b][1,2,4]triazoles as telomeric G-quadruplex stabilizers. Bioorg Med Chem Lett 2009; 19:3434-8. [PMID: 19473838 DOI: 10.1016/j.bmcl.2009.05.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2009] [Revised: 05/07/2009] [Accepted: 05/08/2009] [Indexed: 11/19/2022]
Abstract
The design and synthesis of 2,6-diphenylthiazolo[3,2-b][1,2,4]triazoles characterized by a large aromatic building block bearing cationic side chains are reported. These molecules are evaluated as telomeric G-quadruplex stabilizers and for their selectivity towards duplex DNA by competition experiments. Two compounds (14a, 19) were found active with high selectivity for telomeric G-quadruplex over duplex DNA.
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Affiliation(s)
- Jamal El Bakali
- Institut de Chimie Pharmaceutique Albert Lespagnol, EA 2692, IFR 114, Université de Lille 2, 3 rue du Professeur Laguesse, BP 83, 59006 Lille, France
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24
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D'Onofrio MF, Brézillon S, Baranek T, Perreau C, Radwanska A, Brassart B, Roughley PJ, Malicka-Blaszkiewicz M, Ricard-Blum S, Maquart FX, Wegrowski Y. WITHDRAWN: PUBLISHED IN ERROR BY PUBLISHER: Lumican core protein increases melanoma cell adhesion through a beta 1-type integrin receptor. J Biol Chem 2007:M701861200. [PMID: 17699515 DOI: 10.1074/jbc.m701861200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Ahead of Print article withdrawn by publisher
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Affiliation(s)
- Marie-France D'Onofrio
- Laboratoire de Biochimie Medicale et Biologie Moleculaire, CNRS UMR 6198, IFR53-Biomolecules, Reims 51095
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25
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Brassart B, Gomez D, De Cian A, Paterski R, Montagnac A, Qui KH, Temime-Smaali N, Trentesaux C, Mergny JL, Gueritte F, Riou JF. A new steroid derivative stabilizes g-quadruplexes and induces telomere uncapping in human tumor cells. Mol Pharmacol 2007; 72:631-40. [PMID: 17586599 DOI: 10.1124/mol.107.036574] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Human telomeric DNA consists of tandem repeats of the sequence d(TTAGGG) with a 3' single-stranded extension (the G-overhang). The stabilization of G-quadruplexes in the human telomeric sequence by small-molecule ligands inhibits the activity of telomerase and results in telomere uncapping, leading to senescence or apoptosis of tumor cells. Therefore, the search for new and selective G-quadruplex ligands is of considerable interest because a selective ligand might provide a telomere-targeted therapeutic approach to treatment of cancer. We have screened a bank of derivatives from natural and synthetic origin using a temperature fluorescence assay and have identified two related compounds that induce G-quadruplex stabilization: malouetine and steroid FG. These steroid derivatives have nonplanar and nonaromatic structures, different from currently known G-quadruplex ligands. Malouetine is a natural product isolated from the leaves of Malouetia bequaaertiana E. Woodson and is known for its curarizing and DNA-binding properties. Steroid FG, a funtumine derivative substituted with a guanylhydrazone moiety, interacted selectively with the telomeric G-quadruplex in vitro. This derivative induced senescence and telomere shortening of HT1080 tumor cells at submicromolar concentrations, corresponding to the phenotypic inactivation of telomerase activity. In addition, steroid FG induced a rapid degradation of the telomeric G-overhang and the formation of anaphase bridges, characteristics of telomere uncapping. Finally, the expression of protection of telomere 1 (POT1) induced resistance to the growth effect of steroid FG. These results indicate that these steroid ligands represent a new class of telomere-targeted agents with potential as antitumor drugs.
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Affiliation(s)
- Bertrand Brassart
- Laboratoire d'Onco-Pharmacologie, JE 2428, UFR de Pharmacie, Université de Reims Champagne-Ardenne, 51 rue Cognacq-Jay, F-51096 Reims, France
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26
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Gomez D, Wenner T, Brassart B, Douarre C, O'Donohue MF, El Khoury V, Shin-Ya K, Morjani H, Trentesaux C, Riou JF. Telomestatin-induced telomere uncapping is modulated by POT1 through G-overhang extension in HT1080 human tumor cells. J Biol Chem 2006; 281:38721-9. [PMID: 17050546 DOI: 10.1074/jbc.m605828200] [Citation(s) in RCA: 168] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Telomestatin is a potent G-quadruplex ligand that interacts with the 3' telomeric overhang, leading to its degradation, and induces a delayed senescence and apoptosis of cancer cells. POT1 and TRF2 were recently identified as specific telomere-binding proteins involved in telomere capping and t-loop maintenance and whose interaction with telomeres is modulated by telomestatin. We show here that the treatment of HT1080 human tumor cells by telomestatin induces a rapid decrease of the telomeric G-overhang and of the double-stranded telomeric repeats. Telomestatin treatment also provokes a strong decrease of POT1 and TRF2 from their telomere sites, suggesting that the ligand triggers the uncapping of the telomere ends. The effect of the ligand is associated with an increase of the gamma-H2AX foci, one part of them colocalizing at telomeres, thus indicating the occurrence of a DNA damage response at the telomere, but also the presence of additional DNA targets for telomestatin. Interestingly, the expression of GFP-POT1 in HT1080 cells increases both telomere and G-overhang length. As compared with HT1080 cells, HT1080GFP-POT1 cells presented a resistance to telomestatin treatment characterized by a protection to the telomestatin-induced growth inhibition and the G-overhang shortening. This protection is related to the initial G-overhang length rather than to its degradation rate and is overcome by increased telomestatin concentration. Altogether these results suggest that telomestatin induced a telomere dysfunction in which G-overhang length and POT1 level are important factors but also suggest the presence of additional DNA sites of action for the ligand.
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Affiliation(s)
- Dennis Gomez
- Laboratoire d'Onco-Pharmacologie, JE 2428, UFR de Pharmacie, Université de Reims Champagne-Ardenne, 51 Rue Cognacq-Jay, 51096 Reims, France
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27
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Pasco S, Brassart B, Ramont L, Maquart FX, Monboisse JC. Control of melanoma cell invasion by type IV collagen. ACTA ACUST UNITED AC 2004; 29:260-6. [PMID: 15936594 DOI: 10.1016/j.cdp.2004.09.003] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2004] [Accepted: 09/15/2004] [Indexed: 11/19/2022]
Abstract
Malignant melanoma is the leading cause of death from diseases of the skin. This review summarizes the data from the literature and our laboratory addressing the effects of type IV collagen on melanoma progression. Many different sequences from type IV collagen promote melanoma cell adhesion, migration and invasion. The triple helical conformation of the collagenous domain plays a critical role in some of these interactions. However, recent studies from our group demonstrated that a sequence from the alpha3(IV) NC1 domain inhibits melanoma cell proliferation, migration and invasion by decreasing MMP production and activation. Peptide sequences from the alpha1(IV), alpha2(IV) and alpha3(IV) chains named arresten, canstatin and tumstatin, respectively were shown to inhibit angiogenesis. Further investigations regarding the inhibitory effects of the alpha(IV) NC1 domains will have a paramount relevance for the design of efficient strategies to limit melanoma development.
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Affiliation(s)
- Sylvie Pasco
- Laboratoire de Biochimie, UMR 6198 CNRS, IFR 53 Biomolecules, UFR Médecine, Université de Reims Champagne-Ardenne, 51 Rue Cognacq Jay, F51095, REIMS Cedex, France.
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Mochizuki S, Brassart B, Hinek A. Signaling pathways transduced through the elastin receptor facilitate proliferation of arterial smooth muscle cells. J Biol Chem 2002; 277:44854-63. [PMID: 12244048 DOI: 10.1074/jbc.m205630200] [Citation(s) in RCA: 187] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
In this report we demonstrate that soluble peptides, elastin degradation products stimulate proliferation of arterial smooth muscle cells. We show that these effects are due to generation of intracellular signals transduced through the cell surface elastin receptor, which consists of peripheral 67-kDa elastin-binding protein (EBP) (spliced variant of beta-galactosidase), immobilized to the transmembrane sialidase and the protective protein. We found that elastin receptor-transduced signaling triggers activation of G proteins, opening of l-type calcium channels, and a sequential activation of tyrosine kinases: FAK, c-Src, platelet-derived growth factor-receptor kinase and then Ras-Raf-MEK1/2-ERK1/2 phosphorylation cascade. This, in turn, causes an increase in expression of cyclins and cyclin-dependent kinases, and a consequent increase in cellular proliferation. The EBP-transduced signals also induce tyrosine kinase-dependent phosphorylation of beta-tubulin, LC3, microtubule-associated protein 1, and alpha-actin and troponin-T, which could be linked to reorganization of cytoskeleton. We have also disclosed that induction of these signals can be abolished by anti-EBP antibody or by galactosugars, which cause shedding of EBP from the cell surface. Moreover, elastin-derived peptides did not induce proliferation of EBP-deficient cells derived from patients bearing a nonsense mutation of the beta-galactosidase gene or sialidase-deficient cells from patients with congenital sialidosis.
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MESH Headings
- Animals
- Arteries/anatomy & histology
- Arteries/physiology
- CSK Tyrosine-Protein Kinase
- Calcium/metabolism
- Calcium Channel Blockers/pharmacology
- Cell Division/physiology
- Cells, Cultured
- Culture Media, Serum-Free
- Cyclin-Dependent Kinases/metabolism
- Cyclins/metabolism
- Elastin/metabolism
- Enzyme Inhibitors/metabolism
- Fibroblasts/cytology
- Fibroblasts/drug effects
- Fibroblasts/metabolism
- Focal Adhesion Kinase 1
- Focal Adhesion Protein-Tyrosine Kinases
- Gangliosidosis, GM1/metabolism
- Humans
- JNK Mitogen-Activated Protein Kinases
- Mitogen-Activated Protein Kinases/metabolism
- Models, Biological
- Mucolipidoses/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/physiology
- Nisoldipine/pharmacology
- Peptides/genetics
- Peptides/metabolism
- Pertussis Toxin/pharmacology
- Phosphorylation
- Protein-Tyrosine Kinases/metabolism
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Signal Transduction/physiology
- Swine
- Tyrosine/metabolism
- src-Family Kinases
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Affiliation(s)
- Satsuki Mochizuki
- Cardiovascular Research Program, The Hospital for Sick Children and Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5G 1X8, Canada
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Huet E, Brassart B, Cauchard JH, Debelle L, Birembaut P, Wallach J, Emonard H, Polette M, Hornebeck W. Cumulative influence of elastin peptides and plasminogen on matrix metalloproteinase activation and type I collagen invasion by HT-1080 fibrosarcoma cells. Clin Exp Metastasis 2002; 19:107-17. [PMID: 11964074 DOI: 10.1023/a:1014547324918] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
HT-1080 fibrosarcoma cells express at their plasma membrane the elastin-binding protein (EBP). Occupancy of EBP by elastin fragments, tropoelastin or XGVAPG peptides was found to trigger procollagenase-1 (proMMP-1) overproduction by HT-1080 cells at the protein and enzyme levels. RT-PCR analysis indicated that elastin peptides did not modify the MMP-1 mRNA steady state levels, suggesting the involvement of a post-transcriptional mechanism. We previously reported that binding of elastin peptides to EBP induced other matrix metalloproteinases (MMP-2 and MT1-MMP) expression. Since those peptides were here found to also accelerate the secretion of urokinase from HT-1080 cells, culture medium was supplemented with plasminogen together with elastin peptides at aims to induce or potentiate MMPs activation cascades. In such conditions, plasmin activity was generated and exacerbate proMMP-1 and proMMP-2 activation. As a consequence, elastin peptides and plasminogen-treated HT-1080 cells displayed a significant type I collagen matrix invasive capacity.
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Affiliation(s)
- Eric Huet
- FRE 2260 CNRS, Université de Reims (URCA), France
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30
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Huet E, Brassart B, Wallach J, Debelle L, Haye B, Emonard H, Hornebeck W. [Effect of elastin peptides on the production of matrix metalloproteinase 2 by human skin fibroblasts in culture]. J Soc Biol 2002; 195:165-72. [PMID: 11723829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Soluble elastin-derived peptides from alkaline or elastase hydrolysis of insoluble elastin, as well as tropoelastin, increase matrix metalloproteinase-2 (MMP-2) production by human skin fibroblasts in culture as determined by gelatin zymography and ELISA. Such an effect is time and concentration dependent; it can be reproduced by synthetic elastin: VGVAPG, PGAIPG, and laminin: LGTIPG, hexapeptides and inhibited by lactose and is therefore elastin receptor-mediated. The steady state levels of MMP-2 mRNAs are invariant following elastin-fibroblasts interaction. Inhibition of phospholipase C (D-609), ADP-ribosylation factor (brefeldin), protein kinase C (RO-318220) and phospholipase D (1-propanol) totally abolished the elastin-mediated increase of MMP-2 production. It suggested that the post-transcriptional mechanism controlling the elastin-mediated overproduction of MMP-2 involved a cascade leading to phospholipase D activation.
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Affiliation(s)
- E Huet
- Signalisation Cellulaire et Matrice Extracellulaire, CNRS FRE 2260, IFR 53 Biomolécules, Facultés de Médecine et des Sciences, Université de Reims Champagne-Ardenne, Reims, France
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31
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Brassart B, Fuchs P, Huet E, Alix AJ, Wallach J, Tamburro AM, Delacoux F, Haye B, Emonard H, Hornebeck W, Debelle L. Conformational dependence of collagenase (matrix metalloproteinase-1) up-regulation by elastin peptides in cultured fibroblasts. J Biol Chem 2001; 276:5222-7. [PMID: 11084020 DOI: 10.1074/jbc.m003642200] [Citation(s) in RCA: 134] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We have established that treatment of cultured human skin fibroblasts with tropoelastin or with heterogenic peptides, obtained after organo-alkaline or leukocyte elastase hydrolysis of insoluble elastin, induces a high expression of pro-collagenase-1 (pro-matrix metalloproteinase-1 (pro-MMP-1)). The identical effect was achieved after stimulation with a VGVAPG synthetic peptide, reflecting the elastin-derived domain known to bind to the 67-kDa elastin-binding protein. This clearly indicated involvement of this receptor in the described phenomenon. This notion was further reinforced by the fact that elastin peptides-dependent MMP-1 up-regulation has not been demonstrated in cultures preincubated with 1 mm lactose, which causes shedding of the elastin-binding protein and with pertussis toxin, which blocks the elastin-binding protein-dependent signaling pathway involving G protein, phospholipase C, and protein kinase C. Moreover, we demonstrated that diverse peptides maintaining GXXPG sequences can also induce similar cellular effects as a "principal" VGVAPG ligand of the elastin receptor. Results of our biophysical studies suggest that this peculiar consensus sequence stabilizes a type VIII beta-turn in several similar, but not identical, peptides that maintain a sufficient conformation to be recognized by the elastin receptor. We have also established that GXXPG elastin-derived peptides, in addition to pro-MMP-1, cause up-regulation of pro-matrix metalloproteinase-3 (pro-stromelysin 1). Furthermore, we found that the presence of plasmin in the culture medium activated these MMP proenzymes, leading to a consequent degradation of collagen substrate. Our results may be, therefore, relevant to pathobiology of inflammation, in which elastin-derived peptides bearing the GXXPG conformation (created after leukocyte-dependent proteolysis) bind to the elastin receptor of local fibroblasts and trigger signals leading to expression and activation of MMP-1 and MMP-3, which in turn exacerbate local connective tissue damage.
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Affiliation(s)
- B Brassart
- UPRES-A CNRS 6021, IFR53 Biomolécules, Faculties of Sciences and Medicine, IFR53 Biomolécules, Faculty of Sciences, University of Reims, 51687 Reims, France
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32
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Brassart B, Randoux A, Hornebeck W, Emonard H. Regulation of matrix metalloproteinase-2 (gelatinase A, MMP-2), membrane-type matrix metalloproteinase-1 (MT1-MMP) and tissue inhibitor of metalloproteinases-2 (TIMP-2) expression by elastin-derived peptides in human HT-1080 fibrosarcoma cell line. Clin Exp Metastasis 1998; 16:489-500. [PMID: 9872597 DOI: 10.1023/a:1006550503612] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Soluble kappa-elastin peptides were shown to stimulate the expression of MMP-2 (but not MMP-9) by human fibrosarcoma HT-1080 cells, both at the protein and mRNA levels; maximal effect being observed at a concentration of 25 microg/ml of kappa-elastin. The stimulatory effect could be reproduced using Val-Gly-Val-Ala-Pro-Gly (VGVAPG) peptide, an elastin-derived hydrophobic hexapeptide which represented the elastin receptor binding sequence of tropoelastin. Furthermore, treatment of cells with lactose (30 mM), which dissociated 67-kDa elastin binding protein (EBP) from cell surfaces, completely abolished this effect, suggesting that the elastin receptor could mediate such a response. Using a specific monoclonal antibody, 67-kDa EBP was detected in HT-1080 membrane preparations by Western immunoblotting. Following treatment with 25 microg/ml kappa-elastin or 200 microg/ml VGVAPG, increased levels of the active 62-kDa form of MMP-2 were found in HT-1080 cell extracts. Stimulation of MT1-MMP mRNA expression by treatment with elastin-derived peptides (EDPs) was shown by competitive polymerase chain reaction (PCR). A reverse zymography analysis revealed that EDPs also stimulated TIMP-2 (but not TIMP-1) production by HT-1080 cells. Competitive PCR confirmed increased TIMP-2 mRNA expression by such treatment. These results suggest that occupancy of the 67-kDa elastin receptor by elastin-derived peptides enhanced both expression and activation of proMMP-2 and consequently, could promote the invasive/metastatic ability of tumor cells expressing this receptor.
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Affiliation(s)
- B Brassart
- Laboratoire de Biochimie, CNRS, Upresa 6021, IFR 53-BiomoPéailes, Faculté de Médecine, Reims, France
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Brassart B, Lansac J, Maillet M, Soutoul JH. [Ultrastructural and histochemical study of the zones of the junctions of luteal cells in women. Functional significance]. J Gynecol Obstet Biol Reprod (Paris) 1976; 5:483-93. [PMID: 182742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We are reporting here the results of an electron microscopic study of the junction between cells which have been seen in corpora lutea in human beings between the 20th and 27th days of the cycle. Conventional electron microscopic techniques, using tracers (plotters) for the extracellular spaces as well as Thiery's histochemical technique, were used. Two principal types of junctions between the cells have been described: tight junctions and septate junctions. A discussion takes place about the different histophysiological problems which presented (LH hormone receptors and intercellular diffusion of the message).
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Brassart B, Maillet M. [Junction zones of luteal cells in the luteotrophic phase in humans]. Bull Assoc Anat (Nancy) 1975; 59:363-76. [PMID: 1203549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Three different types of junctions were revealed studying human corpus luteum during luteotrophic phasis : tight-junctions, gap-junctions and septate junctions. Tight-junctions were characterized by a discontinuous central leaflet formed by osmiophilous punctiform components separated by osmiophobic spaces. Lanthanum nitrate permeability of these junctions lead us to think that they may be leaky. They were only a very few gap-junctions, they were found to be as classically described, made up of seven leaflets. Septate junctions were about 250 A long, some septa were arrayed in a discordely fashion and were separated by lanthanum nitrate permeable spaces. The location of these different junctions was determined with accuracy: tight and gap junctions were located on the lateral faces and around cellular interdigitations, septate junctions were shown to bind either the microvillosities of a same cell or the microvillosities of two bordering cells. The fonctionnal signification of these junctions is discussed. Les auteurs remercient vivement M. le Professeur SOUTOUL et M. le Docteur LANSAC du Service de Gynécologie-Obstétrique (C.H.U. Bretonneau) pour leur aimable collaboration.
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