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Garcia Garcia de Paredes A, Villanueva C, Blanco C, Genescà J, Manicardi N, Garcia-Pagan JC, Calleja JL, Aracil C, Morillas RM, Poca M, Peñas B, Augustin S, Abraldes JG, Alvarado E, Royo F, Garcia-Bermejo ML, Falcon-Perez JM, Bañares R, Bosch J, Gracia-Sancho J, Albillos A. Serum miR-181b-5p predicts ascites onset in patients with compensated cirrhosis. JHEP Rep 2021; 3:100368. [PMID: 34712934 PMCID: PMC8531668 DOI: 10.1016/j.jhepr.2021.100368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/19/2021] [Accepted: 09/08/2021] [Indexed: 11/30/2022] Open
Abstract
Background & Aims Treatment with non-selective beta-blockers (NSBBs) reduces the risk of ascites, which is the most common decompensating event in cirrhosis. This study aimed to assess the ability of a serum microRNA (miRNA) signature to predict ascites formation and the hemodynamic response to NSBBs in compensated cirrhosis. Methods Serum levels of miR-452-5p, miR-429, miR-885-5p, miR-181b-5p, and miR-122-5p were analyzed in patients with compensated cirrhosis (N = 105). Hepatic venous pressure gradient (HVPG) was measured at baseline, after intravenous propranolol, and 1 year after randomization to NSBBs (n = 52) or placebo (n = 53) (PREDESCI trial). miRNAs were analyzed at baseline and at 1 year. Results Nineteen patients (18%) developed ascites, of whom 17 developed ascites after 1 year. miR-181b-5p levels at 1 year, but not at baseline, were higher in patients that developed ascites. The AUC of miR-181b-5p at 1 year to predict ascites was 0.7 (95% CI 0.59–0.78). miR-429 levels were lower at baseline in acute HVPG responders to NSBBs (AUC 0.65; 95% CI, 0.53–0.76), but levels at baseline and at 1 year were not associated with the HVPG response to NSBBs at 1 year. Conclusions Serum miR-181b-5p is a promising non-invasive biomarker to identify patients with compensated cirrhosis at risk of ascites development. Lay summary Ascites marks the transition from the compensated to decompensated stage in cirrhosis and indicates a worsening in prognosis. There are currently no easily accessible tools to identify patients with compensated cirrhosis at risk of developing ascites. We evaluated the levels of novel molecules termed microRNAs in the blood of patients with compensated cirrhosis and observed that miR-181b-5p can predict which patients are going to develop ascites. miR-181b-5p appears to be a useful serum biomarker to anticipate ascites onset. Low serum miR-181b-5p indicates low risk of ascites in compensated cirrhosis. Low serum miR-429 reflects acute hemodynamic response to non-selective beta-blockers.
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Affiliation(s)
- Ana Garcia Garcia de Paredes
- Gastroenterology and Hepatology Department, Hospital Universitario Ramon y Cajal, Instituto Ramon y Cajal de Investigacion Sanitaria (IRYCIS), Universidad de Alcala, Madrid, Spain
| | - Càndid Villanueva
- Hospital of Santa Creu and Sant Pau, Autonomous University of Barcelona, Hospital Sant Pau Biomedical Research Institute (IIB Sant Pau) Barcelona, Spain.,Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Spain
| | - Carolina Blanco
- Biomarkers and Therapeutic Targets Group, Instituto Ramon y Cajal de Investigacion Sanitaria (IRYCIS), Madrid, Spain
| | - Joan Genescà
- Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Spain.,Liver Unit, Vall d'Hebron University Hospital, Vall d'Hebron Institute of Research (VHIR), Vall d'Hebron Barcelona Hospital campus, Autonomous University of Barcelona, Barcelona, Spain
| | - Nicolo Manicardi
- Liver Vascular Biology Research Group, IDIBAPS Biomedical Research Institute, Barcelona, Spain
| | - Juan Carlos Garcia-Pagan
- Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Spain.,Barcelona Hepatic Haemodynamic Laboratory, Liver Unit, Institute of Digestive and Metabolic Diseases, August Pi i Sunyer Institute of Biomedical Research, Hospital Clínic, Barcelona, Spain
| | - Jose Luis Calleja
- Gastroenterology and Hepatology Department, Hospital Universitario Puerta de Hierro, Puerta de Hierro Hospital Research Institute, Autonomous University of Madrid, Madrid, Spain
| | - Carlos Aracil
- Institute of Biomedical Research, Arnau de Vilanova University Hospital (IRB Lleida), Lleida, Spain
| | - Rosa M Morillas
- Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Spain.,Liver Section, Hospital Universitari Germans Trias i Pujol, IGTP, Badalona, Spain.,Universitat Autònoma de Barcelona, Spain
| | - Maria Poca
- Hospital of Santa Creu and Sant Pau, Autonomous University of Barcelona, Hospital Sant Pau Biomedical Research Institute (IIB Sant Pau) Barcelona, Spain
| | - Beatriz Peñas
- Gastroenterology and Hepatology Department, Hospital Universitario Ramon y Cajal, Instituto Ramon y Cajal de Investigacion Sanitaria (IRYCIS), Universidad de Alcala, Madrid, Spain
| | - Salvador Augustin
- Liver Unit, Vall d'Hebron University Hospital, Vall d'Hebron Institute of Research (VHIR), Vall d'Hebron Barcelona Hospital campus, Autonomous University of Barcelona, Barcelona, Spain
| | - Juan G Abraldes
- Barcelona Hepatic Haemodynamic Laboratory, Liver Unit, Institute of Digestive and Metabolic Diseases, August Pi i Sunyer Institute of Biomedical Research, Hospital Clínic, Barcelona, Spain.,Liver Unit, Division of Gastroenterology, University of Alberta, Edmonton, Canada
| | - Eldimar Alvarado
- Hospital of Santa Creu and Sant Pau, Autonomous University of Barcelona, Hospital Sant Pau Biomedical Research Institute (IIB Sant Pau) Barcelona, Spain
| | - Félix Royo
- Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Spain.,Exosomes Laboratory, Center for Cooperative Research in Biosciencies (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio, Bizkaia, 48160, Spain
| | - Maria Laura Garcia-Bermejo
- Biomarkers and Therapeutic Targets Group, Instituto Ramon y Cajal de Investigacion Sanitaria (IRYCIS), Madrid, Spain
| | - Juan Manuel Falcon-Perez
- Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Spain.,Exosomes Laboratory, Center for Cooperative Research in Biosciencies (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio, Bizkaia, 48160, Spain
| | - Rafael Bañares
- Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Spain.,Gastroenterology and Hepatology Department, Hospital Universitario Gregorio Marañon, Instituto de Investigacion Sanitaria Gregorio Marañon (IiSGM), Universidad Complutense de Madrid, Madrid, Spain
| | - Jaime Bosch
- Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Spain.,Barcelona Hepatic Haemodynamic Laboratory, Liver Unit, Institute of Digestive and Metabolic Diseases, August Pi i Sunyer Institute of Biomedical Research, Hospital Clínic, Barcelona, Spain.,Department of Biomedical Research and University Clinic for Visceral Medicine and Surgery, Inselspital, Bern, Switzerland
| | - Jordi Gracia-Sancho
- Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Spain.,Liver Vascular Biology Research Group, IDIBAPS Biomedical Research Institute, Barcelona, Spain
| | - Agustin Albillos
- Gastroenterology and Hepatology Department, Hospital Universitario Ramon y Cajal, Instituto Ramon y Cajal de Investigacion Sanitaria (IRYCIS), Universidad de Alcala, Madrid, Spain.,Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Spain
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Martinez-Poveda B, Gomez V, Alcaide-German M, Perruca S, Vazquez S, Alba LE, Casanovas O, Garcia-Bermejo ML, Peso L, Jimenez B. Non-invasive monitoring of hypoxia-inducible factor activation by optical imaging during antiangiogenic treatment in a xenograft model of ovarian carcinoma. Int J Oncol 2011; 39:543-52. [PMID: 21667025 DOI: 10.3892/ijo.2011.1074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Accepted: 05/16/2011] [Indexed: 11/05/2022] Open
Abstract
Targeting the hypoxia response pathway and angiogenesis are two promising therapeutic strategies for cancer treatment. Their use as single strategies has important limitations. Thus, development of combined regimens has become an important step toward improving therapeutic efficacy. Also, non-invasive monitoring of the response to targeted biological therapies, as well as determination of the optimal schedule for combination regimens has become an active field of research over the last five years, with relevance for both preclinical and clinical settings. Here, we used an optical imaging method to non-invasively monitor the functional changes in HIF activity in response to antiangiogenic treatment in a xenograft model of human ovarian carcinoma. A bioluminescent reporter construct containing nine copies of the hypoxia response element upstream of the luciferase gene (9xHRE-luciferase) was characterized in vitro in a panel of tumor cell lines and in vivo in a subcutaneous xenograft model of ovarian carcinoma by means of optical imaging. We showed that in OVCAR-3 subcutaneous xenografts, the most abrupt change in the HIF functional reporter occurs before the onset of massive tumor growth. However, this system failed to detect hypoxia induced upon antiangiogenic treatment due to the compensating effects of increased hypoxia and decreased tumor cell viability caused by imbalanced neovascularization vs. tumor expansion. Therefore, the readout based on HIF functional reporter could be conditioned by the dynamics of tumor growth and angiogenesis, which is highly variable depending on the tumor type, tumor model and stage of progression.
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Affiliation(s)
- B Martinez-Poveda
- Departamento de Bioquímica, Instituto de Investigaciones Biomédicas (CSIC-UAM), 28029 Madrid, Spain
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Pescador N, Villar D, Cifuentes D, Garcia-Rocha M, Ortiz-Barahona A, Vazquez S, Ordoñez A, Cuevas Y, Saez-Morales D, Garcia-Bermejo ML, Landazuri MO, Guinovart J, del Peso L. Hypoxia promotes glycogen accumulation through hypoxia inducible factor (HIF)-mediated induction of glycogen synthase 1. PLoS One 2010; 5:e9644. [PMID: 20300197 PMCID: PMC2837373 DOI: 10.1371/journal.pone.0009644] [Citation(s) in RCA: 181] [Impact Index Per Article: 12.9] [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: 10/13/2009] [Accepted: 01/27/2010] [Indexed: 12/17/2022] Open
Abstract
When oxygen becomes limiting, cells reduce mitochondrial respiration and increase ATP production through anaerobic fermentation of glucose. The Hypoxia Inducible Factors (HIFs) play a key role in this metabolic shift by regulating the transcription of key enzymes of glucose metabolism. Here we show that oxygen regulates the expression of the muscle glycogen synthase (GYS1). Hypoxic GYS1 induction requires HIF activity and a Hypoxia Response Element within its promoter. GYS1 gene induction correlated with a significant increase in glycogen synthase activity and glycogen accumulation in cells exposed to hypoxia. Significantly, knockdown of either HIF1α or GYS1 attenuated hypoxia-induced glycogen accumulation, while GYS1 overexpression was sufficient to mimic this effect. Altogether, these results indicate that GYS1 regulation by HIF plays a central role in the hypoxic accumulation of glycogen. Importantly, we found that hypoxia also upregulates the expression of UTP:glucose-1-phosphate urydylyltransferase (UGP2) and 1,4-α glucan branching enzyme (GBE1), two enzymes involved in the biosynthesis of glycogen. Therefore, hypoxia regulates almost all the enzymes involved in glycogen metabolism in a coordinated fashion, leading to its accumulation. Finally, we demonstrated that abrogation of glycogen synthesis, by knock-down of GYS1 expression, impairs hypoxic preconditioning, suggesting a physiological role for the glycogen accumulated during chronic hypoxia. In summary, our results uncover a novel effect of hypoxia on glucose metabolism, further supporting the central importance of metabolic reprogramming in the cellular adaptation to hypoxia.
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Affiliation(s)
- Nuria Pescador
- Departamento de Bioquímica, Universidad Autónoma de Madrid, Madrid, Spain
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Garcia-Bermejo ML, Leskow FC, Fujii T, Wang Q, Blumberg PM, Ohba M, Kuroki T, Han KC, Lee J, Marquez VE, Kazanietz MG. Diacylglycerol (DAG)-lactones, a new class of protein kinase C (PKC) agonists, induce apoptosis in LNCaP prostate cancer cells by selective activation of PKCalpha. J Biol Chem 2002; 277:645-55. [PMID: 11584014 DOI: 10.1074/jbc.m107639200] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Phorbol esters, the archetypical (PKC) activators, induce apoptosis in androgen-sensitive LNCaP prostate cancer cells. In this study we evaluate the effect of a novel class of PKC ligands, the diacylglycerol (DAG)-lactones, as inducers of apoptosis in LNCaP cells. These unique ligands were designed using novel pharmacophore- and receptor-guided approaches to achieve highly potent DAG surrogates. Two of these compounds, HK434 and HK654, induced apoptosis in LNCaP cells with much higher potency than oleoyl-acetyl-glycerol or phorbol 12,13-dibutyrate. Moreover, different PKC isozymes were found to mediate the apoptotic effect of phorbol 12-myristate 13-acetate (PMA) and HK654 in LNCaP cells. Using PKC inhibitors and dominant negative PKC isoforms, we found that both PKCalpha and PKCdelta mediated the apoptotic effect of PMA, whereas only PKCalpha was involved in the effect of the DAG-lactone. The PKCalpha selectivity of HK654 in LNCaP cells contrasts with similar potencies in vitro for binding and activation of PKCalpha and PKCdelta. Consistent with the differences in isoform dependence in intact cells, PMA and HK654 show marked differences in their abilities to translocate PKC isozymes. Both PMA and HK654 induce a marked redistribution of PKCalpha to the plasma membrane. On the other hand, unlike PMA, HK654 translocates PKCdelta predominantly to the nuclear membrane. Thus, DAG-lactones have a unique profile of activation of PKC isozymes for inducing apoptosis in LNCaP cells and represent the first example of a selective activator of a classical PKC in cellular models. An attractive hypothesis is that selective activation of PKC isozymes by pharmacological agents in cells can be achieved by differential intracellular targeting of each PKC.
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Affiliation(s)
- Maria Laura Garcia-Bermejo
- Center for Experimental Therapeutics and Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6160, USA
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Caloca MJ, Garcia-Bermejo ML, Blumberg PM, Lewin NE, Kremmer E, Mischak H, Wang S, Nacro K, Bienfait B, Marquez VE, Kazanietz MG. beta2-chimaerin is a novel target for diacylglycerol: binding properties and changes in subcellular localization mediated by ligand binding to its C1 domain. Proc Natl Acad Sci U S A 1999; 96:11854-9. [PMID: 10518540 PMCID: PMC18376 DOI: 10.1073/pnas.96.21.11854] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The members of the chimaerin family of Rac-GTPase-activating proteins possess a single C1 domain with high homology to those present in protein kinase C (PKC) isozymes. This domain in PKCs is involved in phorbol ester and diacylglycerol (DAG) binding. We previously have demonstrated that one of the chimaerin isoforms, beta2-chimaerin, binds phorbol esters with high affinity. In this study we analyzed the properties of beta2-chimaerin as a DAG receptor by using a series of conformationally constrained cyclic DAG analogues (DAG lactones) as probes. We identified analogs that bind to beta2-chimaerin with more than 100-fold higher affinity than 1-oleoyl-2-acetylglycerol. The potencies of these analogs approach those of the potent phorbol ester tumor promoters. The different DAG lactones show some selectivity for this novel receptor compared with PKCalpha. Cellular studies revealed that these DAG analogs induce translocation of beta2-chimaerin from cytosolic (soluble) to particulate fractions. Using green fluorescent protein-fusion proteins for beta2-chimaerin we determined that this novel receptor translocates to the perinuclear region after treatment with DAG lactones. Binding and translocation were prevented by mutation of the conserved Cys-246 in the C1 domain. The structural homology between the C1 domain of beta2-chimaerin and the C1b domain of PKCdelta also was confirmed by modeling analysis. Our results demonstrate that beta2-chimaerin is a high affinity receptor for DAG through binding to its C1 domain and supports the emerging concept that multiple pathways transduce signaling through DAG and the phorbol esters.
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Affiliation(s)
- M J Caloca
- Center for Experimental Therapeutics, Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, PA 19104-6160, USA
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