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Dao P, Jarray R, Le Coq J, Lietha D, Loukaci A, Lepelletier Y, Hadj-Slimane R, Garbay C, Raynaud F, Chen H. Synthesis of novel diarylamino-1,3,5-triazine derivatives as FAK inhibitors with anti-angiogenic activity. Bioorg Med Chem Lett 2013; 23:4552-6. [PMID: 23845217 DOI: 10.1016/j.bmcl.2013.06.038] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [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: 04/18/2013] [Revised: 06/10/2013] [Accepted: 06/12/2013] [Indexed: 12/01/2022]
Abstract
We report herein the synthesis of novel diarylamino-1,3,5-triazine derivatives as FAK (focal adhesion kinase) inhibitors and the evaluation of their anti-angiogenic activity on HUVEC cells. Generally, the effects of these compounds on endothelial cells could be correlated with their kinase inhibitory activity. The most efficient compounds displayed inhibition of viability against HUVEC cells in the micromolar range, as observed with TAE-226, which was designed by Novartis Pharma AG. X-ray crystallographic analysis of the co-crystal structure for compound 34 revealed that the mode of interaction with the FAK kinase domain is highly similar to that observed in the complex of TAE-226.
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Affiliation(s)
- Pascal Dao
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR8601, CNRS, Université Paris Descartes, PRES Sorbonne Paris Cité, UFR Biomédicale, 45 rue des Saints-Pères, 75270 Paris Cedex 06, France
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2
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Garcia F, Lepelletier Y, Smaniotto S, Hadj-Slimane R, Dardenne M, Hermine O, Savino W. Inhibitory effect of semaphorin-3A, a known axon guidance molecule, in the human thymocyte migration induced by CXCL12. J Leukoc Biol 2011; 91:7-13. [DOI: 10.1189/jlb.0111031] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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3
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Jarray R, Allain B, Borriello L, Biard D, Loukaci A, Larghero J, Hadj-Slimane R, Garbay C, Lepelletier Y, Raynaud F. Depletion of the novel protein PHACTR-1 from human endothelial cells abolishes tube formation and induces cell death receptor apoptosis. Biochimie 2011; 93:1668-75. [PMID: 21798305 DOI: 10.1016/j.biochi.2011.07.010] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 07/08/2011] [Indexed: 12/21/2022]
Abstract
Using suppression subtractive hybridisation (SSH), we identified a hitherto unreported gene PHACTR-1 (Phosphatase Actin Regulating Protein-1) in Human Umbilical Vascular Endothelial Cells (HUVECs). PHACTR-1 is an actin and protein phosphatase 1 (PP1) binding protein which is reported to be highly expressed in brain and which controls PP1 activity and F-actin remodelling. We have also reported that its expression is dependent of Vascular Endothelial Growth Factor (VEGF-A(165)). To study its function in endothelial cells, we used a siRNA strategy against PHACTR-1. PHACTR-1 siRNA-treated HUVECs showed a major impairment of tube formation and stabilisation. PHACTR-1 depletion triggered apoptosis through death receptors DR4, DR5 and FAS, which was reversed using death receptor siRNAs or with death receptor-dependent caspase-8 siRNA. Our findings suggest that PHACTR-1 is likely to be a key regulator of endothelial cell function properties. Because of its central role in the control of tube formation and endothelial cell survival, PHACTR-1 may represent a new target for the development of anti-angiogenic therapy.
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Affiliation(s)
- Rafika Jarray
- Université Paris Descartes, Sorbonne Paris Cité, CNRS UMR 8601, Laboratoire de chimie et biochimie pharmacologiques et toxicologiques, 45 rue des Saints-Pères, 75006 Paris, France
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4
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Pamonsinlapatham P, Hadj-Slimane R, Lepelletier Y, Allain B, Toccafondi M, Garbay C, Raynaud F. p120-Ras GTPase activating protein (RasGAP): a multi-interacting protein in downstream signaling. Biochimie 2008; 91:320-8. [PMID: 19022332 DOI: 10.1016/j.biochi.2008.10.010] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2008] [Accepted: 10/16/2008] [Indexed: 11/29/2022]
Abstract
p120-RasGAP (Ras GTPase activating protein) plays a key role in the regulation of Ras-GTP bound by promoting GTP hydrolysis via its C-terminal catalytic domain. The p120-RasGAP N-terminal part contains two SH2, SH3, PH (pleckstrin homology) and CaLB/C2 (calcium-dependent phospholipid-binding domain) domains. These protein domains allow various functions, such as anti-/pro-apoptosis, proliferation and also cell migration depending of their distinct partners. The p120-RasGAP domain participates in protein-protein interactions with Akt, Aurora or RhoGAP to regulate functions described bellow. Here, we summarize, in angiogenesis and cancer, the various functional roles played by p120-RasGAP domains and their effector partners in downstream signaling.
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Affiliation(s)
- Perayot Pamonsinlapatham
- Université Paris Descartes, UFR Biomédicale, Laboratoire de Pharmacochimie Moléculaire et Cellulaire, 45 Rue des Saints-Pères, 75270 Paris Cedex 06, France
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5
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Pamonsinlapatham P, Hadj-Slimane R, Raynaud F, Bickle M, Corneloup C, Barthelaix A, Lepelletier Y, Mercier P, Schapira M, Samson J, Mathieu AL, Hugo N, Moncorgé O, Mikaelian I, Dufour S, Garbay C, Colas P. A RasGAP SH3 peptide aptamer inhibits RasGAP-Aurora interaction and induces caspase-independent tumor cell death. PLoS One 2008; 3:e2902. [PMID: 18682833 PMCID: PMC2483412 DOI: 10.1371/journal.pone.0002902] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2007] [Accepted: 07/07/2008] [Indexed: 11/18/2022] Open
Abstract
The Ras GTPase-activating protein RasGAP catalyzes the conversion of active GTP-bound Ras into inactive GDP-bound Ras. However, RasGAP also acts as a positive effector of Ras and exerts an anti-apoptotic activity that is independent of its GAP function and that involves its SH3 (Src homology) domain. We used a combinatorial peptide aptamer approach to select a collection of RasGAP SH3 specific ligands. We mapped the peptide aptamer binding sites by performing yeast two-hybrid mating assays against a panel of RasGAP SH3 mutants. We examined the biological activity of a peptide aptamer targeting a pocket delineated by residues D295/7, L313 and W317. This aptamer shows a caspase-independent cytotoxic activity on tumor cell lines. It disrupts the interaction between RasGAP and Aurora B kinase. This work identifies the above-mentioned pocket as an interesting therapeutic target to pursue and points its cognate peptide aptamer as a promising guide to discover RasGAP small-molecule drug candidates.
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Affiliation(s)
- Perayot Pamonsinlapatham
- Université Paris Descartes, UFR Biomédicale, Laboratoire de Pharmacochimie Moléculaire et Cellulaire, INSERM U648, Paris, France
| | - Réda Hadj-Slimane
- Université Paris Descartes, UFR Biomédicale, Laboratoire de Pharmacochimie Moléculaire et Cellulaire, INSERM U648, Paris, France
| | - Françoise Raynaud
- Université Paris Descartes, UFR Biomédicale, Laboratoire de Pharmacochimie Moléculaire et Cellulaire, INSERM U648, Paris, France
| | | | | | | | - Yves Lepelletier
- Université Paris Descartes, Hôpital Necker, CNRS UMR 8147, Paris, France
| | | | | | - Jérôme Samson
- Université Paris Descartes, UFR Biomédicale, Laboratoire de Pharmacochimie Moléculaire et Cellulaire, INSERM U648, Paris, France
| | | | | | | | | | | | - Christiane Garbay
- Université Paris Descartes, UFR Biomédicale, Laboratoire de Pharmacochimie Moléculaire et Cellulaire, INSERM U648, Paris, France
- * E-mail:
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Hadj-Slimane R, Lepelletier Y, Lopez N, Garbay C, Raynaud F. Short interfering RNA (siRNA), a novel therapeutic tool acting on angiogenesis. Biochimie 2007; 89:1234-44. [PMID: 17707573 DOI: 10.1016/j.biochi.2007.06.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [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: 05/02/2007] [Accepted: 06/29/2007] [Indexed: 11/30/2022]
Abstract
The formation of new blood vessels, uncontrolled cell expansions and invasions are the common feature of cancer, neovascular inflammatory and ocular diseases, such as age-related macular degeneration (AMD). Short interfering RNA (siRNA) and short-hairpin RNA (shRNA) have recently helped extend our understanding of the mechanisms regulating angiogenesis and tumor developments. Moreover, the early success of these tools has reinforced the therapeutic hopes of preventing endogenous or exogenous gene translation. In vivo experiments using several animal tumor models and human pre-clinical trials augured many benefits to control protein expression and cell signaling. The high specificity of siRNA and shRNA to target a protein is crucial to design a new generation of therapeutic agents. At the present, several investigations are focused on the understanding of both gene function and the proof-of-concept for siRNA-mediated anti-angiogenesis. Taken together, in vitro and in vivo studies shed light on the efficiency of siRNA as a new alternative therapeutic agent.
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Affiliation(s)
- Réda Hadj-Slimane
- Université Paris Descartes, Faculté de Médecine, Laboratoire de Pharmacochimie Moléculaire et Cellulaire, 45 rue des Saints-Pères, 75270 Paris Cedex 06, France
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Lepelletier Y, Smaniotto S, Hadj-Slimane R, Villa-Verde DMS, Nogueira AC, Dardenne M, Hermine O, Savino W. Control of human thymocyte migration by Neuropilin-1/Semaphorin-3A-mediated interactions. Proc Natl Acad Sci U S A 2007; 104:5545-50. [PMID: 17369353 PMCID: PMC1838472 DOI: 10.1073/pnas.0700705104] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
It is largely established that molecules first discovered in the nervous system are also found in the immune system. Neuropilin-1 (NP-1) was initially identified to mediate semaphorin-induced chemorepulsion during brain development and is also involved in peripheral T cell/dendritic cell interactions. Herein, we studied NP-1 during T cell development in the human thymus. NP-1 is expressed in both cortex and medulla of thymic lobules, being found in distinct CD4/CD8-defined thymocyte subsets. NP-1 is also found in thymic epithelial cells (TEC) in situ and in vitro, and is recruited at the site of TEC-thymocyte contact. Moreover, NP-1 was rapidly up-regulated during thymocyte stimulation by T cell receptor (TCR) and IL-7 or after adhesion to TEC. Semaphorin-3A (Sema-3A), a natural ligand of NP-1, is also present in human thymus, both in TEC and thymocytes, being up-regulated in thymocytes after TCR engagement. Functionally, Sema-3A decreases the adhesion capacity of NP-1(+) thymocytes and induces their migration by a repulsive effect. In conclusion, we show here that NP-1/Sema-3A-mediated interactions participate in the control of human thymocyte development.
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Affiliation(s)
- Yves Lepelletier
- *Centre National de la Recherche Scientifique Unité Mixte de Recherche 8147, Université René Descartes Paris V, Hôpital Necker, 75743 Paris, France
| | - Salete Smaniotto
- Laboratory on Thymus Research, Department of Immunology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, 21045-900, Rio de Janeiro, Brazil
- Department of Morphology, Federal University of Alagoas, Maceió, 57072-970, Maceió, Brazil
| | - Réda Hadj-Slimane
- Institut National de la Santé et de la Recherche Médicale Unité 648, Université Paris V René Descartes, 45 Rue des Saints Pères, 75006 Paris, France; and
- TRAGEX Pharma, Tour Reflets, 75015 Paris, France
| | - Déa Maria Serra Villa-Verde
- Laboratory on Thymus Research, Department of Immunology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, 21045-900, Rio de Janeiro, Brazil
| | - Ana Cristina Nogueira
- Laboratory on Thymus Research, Department of Immunology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, 21045-900, Rio de Janeiro, Brazil
| | - Mireille Dardenne
- *Centre National de la Recherche Scientifique Unité Mixte de Recherche 8147, Université René Descartes Paris V, Hôpital Necker, 75743 Paris, France
| | - Olivier Hermine
- *Centre National de la Recherche Scientifique Unité Mixte de Recherche 8147, Université René Descartes Paris V, Hôpital Necker, 75743 Paris, France
| | - Wilson Savino
- Laboratory on Thymus Research, Department of Immunology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, 21045-900, Rio de Janeiro, Brazil
- To whom correspondence should be addressed at:
Laboratory on Thymus Research, Department of Immunology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Avenue Brasil 4365, Manguinhos, 21045-900, Rio de Janeiro, RJ, Brazil. E-mail:
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Ouararhni K, Hadj-Slimane R, Ait-Si-Ali S, Robin P, Mietton F, Harel-Bellan A, Dimitrov S, Hamiche A. The histone variant mH2A1.1 interferes with transcription by down-regulating PARP-1 enzymatic activity. Genes Dev 2007; 20:3324-36. [PMID: 17158748 PMCID: PMC1686608 DOI: 10.1101/gad.396106] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The histone variant mH2A is believed to be involved in transcriptional repression, but how it exerts its function remains elusive. By using chromatin immunoprecipitation and tandem affinity immunopurification of the mH2A1.1 nucleosome complex, we identified numerous genes with promoters containing mH2A1.1 nucleosomes. In particular, the promoters of the inducible Hsp70.1 and Hsp70.2 genes, but not that of the constitutively expressed Hsp70.8, were highly enriched in mH2A1.1. PARP-1 was identified as a part of the mH2A1.1 nucleosome complex and was found to be associated with the Hsp70.1 promoter. A specific interaction between mH2A1.1 and PARP-1 was demonstrated and found to be associated with inactivation of PARP-1 enzymatic activity. Heat shock released both mH2A1.1 and PARP-1 from the Hsp70.1 promoter and activated PARP-1 automodification activity. The data we present point to a novel mechanism for control of Hsp70.1 gene transcription. mH2A1.1 recruits PARP-1 to the promoter, thereby inactivating it. Upon heat shock, the Hsp70.1 promoter-bound PARP-1 is released to activate transcription through ADP-ribosylation of other Hsp70.1 promoter-bound proteins.
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Affiliation(s)
- Khalid Ouararhni
- Laboratoire Epigénétique et Cancer, Centre National de la Recherche Scientifique FRE 2944, 94801 Villejuif, France
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Lepelletier Y, Moura IC, Hadj-Slimane R, Renand A, Fiorentino S, Baude C, Shirvan A, Barzilai A, Hermine O. Immunosuppressive role of semaphorin-3A on T cell proliferation is mediated by inhibition of actin cytoskeleton reorganization. Eur J Immunol 2006; 36:1782-93. [PMID: 16791896 DOI: 10.1002/eji.200535601] [Citation(s) in RCA: 138] [Impact Index Per Article: 7.7] [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: 12/15/2022]
Abstract
Timely negative regulation of the immune system is critical to allow it to perform its duty while maintaining it under tight control to avoid overactivation. We previously reported that the neuronal receptor neuropilin-1 (NP-1) is expressed in human lymph nodes. However, the role of NP-1 interaction with its physiological ligand semaphorin-3A (Sema-3A) on immune cells remains elusive. Here we show that Sema-3A is expressed by activated DC and T cells, and that its secretion in DC/T cell cocultures is delayed. Sema-3A/NP-1 interaction down-modulated T cell activation since addition of Sema-3A in DC/T cell cocultures dramatically inhibited allogeneic T cell proliferation. More importantly, neutralization by blocking antibodies or by antagonist peptide of endogenous Sema-3A produced by DC/T cell cocultures resulted in a 130% increase in T cell proliferation. Sema-3A acted directly on T cells, since it could block anti-CD3/CD28-stimulated proliferation of T cells. Finally, immunomodulatory functions of Sema-3A relied on the blockage of actin cytoskeleton reorganization, affecting TCR polarization and interfering with early TCR signal transduction events such as ZAP-70 or focal adhesion kinase phosphorylation. Therefore, we propose that Sema-3A secretion and the resulting NP-1/Sema-3A interaction are involved in a late negative feedback loop controlling DC-induced T cell proliferation.
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Affiliation(s)
- Yves Lepelletier
- CNRS UMR 8147, Faculté de médecine, Université René Descartes, Paris V, Hôpital Necker, Assistance Publique-Hôpitaux de Paris, Paris, France
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Hadj-Slimane R, Chelbi-Alix MK, Tovey MG, Bobé P. An Essential Role for IFN-<I>α</I> in the Overexpression of Fas Ligand on MRL/<I>lpr</I> Lymphocytes and on Their Spontaneous Fas-Mediated Cytotoxic Potential. J Interferon Cytokine Res 2004. [DOI: 10.1089/1079990042722882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hadj-Slimane R, Chelbi-Alix MK, Tovey MG, Bobé P. An Essential Role for IFN-α in the Overexpression of Fas Ligand on MRL/lpr Lymphocytes and on Their Spontaneous Fas-Mediated Cytotoxic Potential. J Interferon Cytokine Res 2004; 24:717-28. [PMID: 15684739 DOI: 10.1089/jir.2004.24.717] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [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: 12/23/2022] Open
Abstract
Lymphocytes from aged autoimmune MRL/lpr mice overexpress Fas ligand (FasL), and are cytotoxic against Fas+ target cells. This cytotoxic potential is only partly due to FasL, as wild-type MRL+/+ lymphocytes are not able to kill Fas+ targets after induction of FasL. In addition, serum levels of interferon-alpha (IFN-alpha) increase in parallel with the Fas-dependent cytotoxic potential of lymphocytes from MRL/lpr mice as they age. To understand the mechanisms underlying these observations, combined suppression subtractive hybridization (SSH) and RT-PCR were used to study differential gene expression in splenocytes from MRL/lpr mice compared with splenocytes from MRL+/+ mice. Twenty-two genes were upregulated transcriptionally in MRL/lpr splenocytes compared with their MRL+/+ counterparts. Furthermore, 9 of these genes were also upregulated after treatment of MRL/lpr splenocytes with IFN-alpha, and 4 were strongly downregulated. MRL/lpr lymphocytes were also found to be hyperresponsive to IFN-alpha. Thus, MRL/lpr lymphocytes overexpressed mRNA for the IFN-alpha receptor (IFNAR-1 and IFNAR-2) chains of the IFN-alpha/beta receptor and exhibited high endogenous levels of both Stat1 and phosphorylated Stat1 proteins. Lymphocytes from young MRL/lpr mice, with low Fas-dependent cytotoxic activity, were found to become highly cytotoxic against Fas+ targets after treatment with IFN-alpha. These data suggest that IFN-alpha plays an important role in the physiopathology of the systemic lupus erythematosus (SLE)-like syndrome that occurs in MRL/lpr mice.
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MESH Headings
- Animals
- Cells, Cultured
- Cytotoxicity, Immunologic/genetics
- DNA, Complementary/analysis
- DNA-Binding Proteins/metabolism
- Fas Ligand Protein
- Gene Expression Regulation
- Interferon-alpha/blood
- Interferon-alpha/pharmacology
- Interferon-alpha/physiology
- Lupus Erythematosus, Systemic/genetics
- Lupus Erythematosus, Systemic/immunology
- Lymphocytes/drug effects
- Lymphocytes/immunology
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Mice
- Mice, Inbred MRL lpr
- Nucleic Acid Hybridization
- Phosphorylation
- RNA, Messenger/analysis
- RNA, Messenger/metabolism
- Receptor, Interferon alpha-beta
- Receptors, Interferon/genetics
- Receptors, Interferon/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- STAT1 Transcription Factor
- Spleen/cytology
- Spleen/metabolism
- Trans-Activators/metabolism
- Transcription, Genetic/drug effects
- Transcriptional Activation
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Affiliation(s)
- Réda Hadj-Slimane
- Laboratoire d'Oncologie Virale, CNRS UPR 9045, Institut André Lwoff, Villejuif, France
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