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González-Fernández R, González-Nicolás MÁ, Morales M, Ávila J, Lázaro A, Martín-Vasallo P. FKBP51, AmotL2 and IQGAP1 Involvement in Cilastatin Prevention of Cisplatin-Induced Tubular Nephrotoxicity in Rats. Cells 2022; 11:cells11091585. [PMID: 35563891 PMCID: PMC9099571 DOI: 10.3390/cells11091585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/01/2022] [Accepted: 05/06/2022] [Indexed: 01/27/2023] Open
Abstract
The immunophilin FKBP51, the angiomotin AmotL2, and the scaffoldin IQGAP1 are overexpressed in many types of cancer, with the highest increase in leucocytes from patients undergoing oxaliplatin chemotherapy. Inflammation is involved in the pathogenesis of nephrotoxicity induced by platinum analogs. Cilastatin prevents renal damage caused by cisplatin. This functional and confocal microscopy study shows the renal focal-segmental expression of TNFα after cisplatin administration in rats, predominantly of tubular localization and mostly prevented by co-administration of cilastatin. FKBP51, AmotL2 and IQGAP1 protein expression increases slightly with cilastatin administration and to a much higher extent with cisplatin, in a cellular- and subcellular-specific manner. Kidney tubule cells expressing FKBP51 show either very low or no expression of TNFα, while cells expressing TNFα have low levels of FKBP51. AmotL2 and TNFα seem to colocalize and their expression is increased in tubular cells. IQGAP1 fluorescence increases with cilastatin, cisplatin and joint cilastatin-cisplatin treatment, and does not correlate with TNFα expression or localization. These data suggest a role for FKBP51, AmotL2 and IQGAP1 in cisplatin toxicity in kidney tubules and in the protective effect of cilastatin through inhibition of dehydropeptidase-I.
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Affiliation(s)
- Rebeca González-Fernández
- Laboratorio de Biología del Desarrollo, UD de Bioquímica y Biología Molecular and Centro de, Investigaciones Biomédicas de Canarias (CIBICAN), Universidad de La Laguna, Av. Astrofísico Sánchez s/n., 38206 La Laguna, Spain; (R.G.-F.); (J.Á.)
| | - María Ángeles González-Nicolás
- Renal Physiopathology Laboratory, Department of Nephrology, Instituto de Investigación Sanitaria Gregorio Marañón, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain;
| | - Manuel Morales
- Department of Medical Oncology, Nuestra Señora de Candelaria University Hospital, 38010 Santa Cruz de Tenerife, Spain;
| | - Julio Ávila
- Laboratorio de Biología del Desarrollo, UD de Bioquímica y Biología Molecular and Centro de, Investigaciones Biomédicas de Canarias (CIBICAN), Universidad de La Laguna, Av. Astrofísico Sánchez s/n., 38206 La Laguna, Spain; (R.G.-F.); (J.Á.)
| | - Alberto Lázaro
- Renal Physiopathology Laboratory, Department of Nephrology, Instituto de Investigación Sanitaria Gregorio Marañón, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain;
- Department of Physiology, School of Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Correspondence: (A.L.); (P.M.-V.); Tel.: +34-922-318358 (P.M.-V.)
| | - Pablo Martín-Vasallo
- Laboratorio de Biología del Desarrollo, UD de Bioquímica y Biología Molecular and Centro de, Investigaciones Biomédicas de Canarias (CIBICAN), Universidad de La Laguna, Av. Astrofísico Sánchez s/n., 38206 La Laguna, Spain; (R.G.-F.); (J.Á.)
- Correspondence: (A.L.); (P.M.-V.); Tel.: +34-922-318358 (P.M.-V.)
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Rotoli D, Díaz-Flores L, Gutiérrez R, Morales M, Ávila J, Martín-Vasallo P. AmotL2, IQGAP1, and FKBP51 Scaffold Proteins in Glioblastoma Stem Cell Niches. J Histochem Cytochem 2022; 70:9-16. [PMID: 34165350 PMCID: PMC8721575 DOI: 10.1369/00221554211025480] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Glioma stem cells (GSCs) live in a continuous process of stemness reprogramming to achieve specific cell commitment within the so-called GSC niches, specifically located in periarteriolar regions. In this review, we analyze the expression levels, cellular and subcellular location, and role of three scaffold proteins (IQGAP1, FKBP51, and AmotL2) in GSC niches. Scaffold proteins contribute to cell differentiation, migration, and angiogenesis in glioblastoma. It could be of diagnostic interest for establishing stages, for therapeutic targets, and for improving glioblastoma prognosis, which is still at the experimental level.
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Affiliation(s)
- Deborah Rotoli
- Department of Bioquímica, Microbiología, Biología Celular y Genética, Universidad de La Laguna, San Cristóbal de La Laguna, Spain,Instituto de Tecnología Biomédicas de Canarias, Universidad de La Laguna, San Cristóbal de La Laguna, Spain,Istituto per l’Endocrinologia e l’Oncologia Gaetano Salvatore, Naples, Italy
| | - Lucio Díaz-Flores
- Department of Basic Medical Sciences and Department of Anatomy, Pathology, Histology and Radiology, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Ricardo Gutiérrez
- Department of Basic Medical Sciences and Department of Anatomy, Pathology, Histology and Radiology, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Manuel Morales
- Oncología Médica, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain
| | - Julio Ávila
- Department of Bioquímica, Microbiología, Biología Celular y Genética, Universidad de La Laguna, San Cristóbal de La Laguna, Spain,Instituto de Tecnología Biomédicas de Canarias, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Pablo Martín-Vasallo
- Pablo Martín-Vasallo, UD Bioquímica y Biología Molecular, Universidad de La Laguna, Av/Astrofísico Sánchez s/n, 38206 San Cristóbal de La Laguna, Tenerife, Spain. E-mail:
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Sun X, Lv Y, Wang J, Cheng H, Huang J, Du Y, Dong J. Differential protein expression profiling by iTRAQ‐2D‐LC‐MS/MS of rats treated with oxaliplatin. J Cell Biochem 2019; 120:18128-18141. [PMID: 31237037 DOI: 10.1002/jcb.29116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/13/2019] [Accepted: 05/15/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Xianjun Sun
- Department of Integrative Medicine, Huashan Hospital Fudan University Shanghai China
- Qingpu Chinese Medicine Hospital Institutes of Integrative Medicine, Fudan University Shanghai China
| | - Yubao Lv
- Department of Integrative Medicine, Huashan Hospital Fudan University Shanghai China
- Qingpu Chinese Medicine Hospital Institutes of Integrative Medicine, Fudan University Shanghai China
| | - Junjun Wang
- Qingpu Chinese Medicine Hospital Institutes of Integrative Medicine, Fudan University Shanghai China
| | - HuiQin Cheng
- Department of Prevention and Healthcare Yangpu Daqiao Community Health Service Center Shanghai China
| | - Jianhua Huang
- Department of Integrative Medicine, Huashan Hospital Fudan University Shanghai China
- Qingpu Chinese Medicine Hospital Institutes of Integrative Medicine, Fudan University Shanghai China
| | - Yijie Du
- Department of Integrative Medicine, Huashan Hospital Fudan University Shanghai China
- Qingpu Chinese Medicine Hospital Institutes of Integrative Medicine, Fudan University Shanghai China
| | - Jingcheng Dong
- Department of Integrative Medicine, Huashan Hospital Fudan University Shanghai China
- Qingpu Chinese Medicine Hospital Institutes of Integrative Medicine, Fudan University Shanghai China
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Rotoli D, Morales M, Maeso MDC, Ávila J, Pérez-Rodríguez ND, Mobasheri A, van Noorden CJF, Martín-Vasallo P. IQGAP1, AmotL2, and FKBP51 Scaffoldins in the Glioblastoma Microenvironment. J Histochem Cytochem 2019; 67:481-494. [PMID: 30794467 DOI: 10.1369/0022155419833334] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Glioblastoma (GB) is the most frequently occurring and aggressive primary brain tumor. Glioma stem cells (GSCs) and astrocytoma cells are the predominant malignant cells occurring in GB besides a highly heterogeneous population of migrating, neovascularizing and infiltrating myeloid cells that forms a complex tumor microenvironment (TME). Cross talk between the TME cells is pivotal in the biology of this tumor and, consequently, adaptor proteins at critical junctions of signaling pathways may be crucial. Scaffold proteins (scaffolins or scaffoldins) integrate external and internal stimuli to regulate various signaling pathways, interacting simultaneously with multiple proteins involved. We investigated by double and triple immunofluorescence the localization of IQGAP1, AmotL2, and FKBP51, three closely related scaffoldins, in malignant cells and TME of human GB tumors. We found that IQGAP1 is preferentially expressed in astrocytoma cells, AmotL2 in GSCs, and FKBP51 in white blood cells in human GB tumors. As GSCs are specially the target for novel therapies, we will investigate in further studies whether AmotL2 inhibition is effective in the treatment of GB.
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Affiliation(s)
- Deborah Rotoli
- UD of Biochemistry and Molecular Biology.,Instituto de Tecnologías Biomédicas de Canarias.,Universidad de La Laguna, San Cristóbal de La Laguna, Spain.,Istituto per l'Endocrinologia e l'Oncologia Sperimentale Gaetano Salvatore, Naples, Italy.,Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz, Spain
| | - Manuel Morales
- Oncología Médica.,Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz, Spain.,Oncología Médica, Hospiten Rambla, Santa Cruz, Spain
| | - María-Del-C Maeso
- Servicio de Anatomía Patológica.,Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz, Spain
| | - Julio Ávila
- UD of Biochemistry and Molecular Biology.,Instituto de Tecnologías Biomédicas de Canarias.,Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | | | - Ali Mobasheri
- Department of Regenerative Medicine, State Research Institute Center for Innovative Medicine, Vilnius, Lithuania
| | - Cornelis J F van Noorden
- Department of Medical Biology, Cancer Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands.,Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.,Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Ljubljana, Slovenia
| | - Pablo Martín-Vasallo
- UD of Biochemistry and Molecular Biology.,Instituto de Tecnologías Biomédicas de Canarias.,Universidad de La Laguna, San Cristóbal de La Laguna, Spain
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Rotoli D, Morales M, Maeso MDC, García MDP, Gutierrez R, Valladares F, Ávila J, Díaz-Flores L, Mobasheri A, Martín-Vasallo P. Alterations in IQGAP1 expression and localization in colorectal carcinoma and liver metastases following oxaliplatin-based chemotherapy. Oncol Lett 2017; 14:2621-2628. [PMID: 28928806 PMCID: PMC5588162 DOI: 10.3892/ol.2017.6525] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 10/11/2016] [Indexed: 01/29/2023] Open
Abstract
IQGAP1 is a scaffolding protein that serves a key role in cell dynamics by integrating internal and external stimuli to distinct signal outputs. Previous studies have identified several genes that are significantly up- or downregulated in the peripheral white cells (PWCs) of patients with colorectal adenocarcinoma (CRC), who underwent oxaliplatin-based chemotherapy (CT). In addition, screening studies have reported that IQ-motif containing GTPase activating protein 1 (IQGAP1) transcriptional expression levels varied from ‘off’ to ‘on’ following oxaliplatin CT. In order to determine if variations previously described in PWCs are able to be observed at the protein level in tumors and in metastases following CT, the present study performed an immunohistochemical analysis of IQGAP1 in CRC and primary metastases. IQGAP1 expression was observed in the nuclear envelope and in lateral cell membranes and cytoplasm in normal colon tissue. However, in tumor tissue, cells exhibited a diffuse pattern, with variable expression levels of staining in the nuclear membrane and cytoplasm, with the highest expression intensity observed at the invasive front. In healthy and metastasized liver tissue and in the metastases themselves, expression levels varied from cell to cell from no expression to a high level. In the majority of cells, IQGAP1 co-localized with microtubules at the cytoplasmic face of the nuclear envelope. Strong positive expression was observed in areas of the lesion where cells were detaching from the lesion into the lumen. Despite the homogeneous IQGAP1 staining pattern observed in healthy colon tissue sections, CRC demonstrated heterogeneity in staining, which was more marked in metastasized liver tissue resected following CT. However, the most notable findings were the observed effects on the cellular and subcellular distribution and its implications for cancer biology. These results suggest that IQGAP1 may be a putative biomarker, a candidate for clinical diagnostics and a potential novel target for anti-cancer therapeutics.
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Affiliation(s)
- Deborah Rotoli
- Laboratory of Developmental Biology, UD-Biochemistry and Molecular Biology and Centre for Biomedical Research of The Canary Islands, University of La Laguna, 38206 La Laguna, Canary Islands, Spain.,National Research Council, Institute of Endocrinology and Experimental Oncology, I-80131 Naples, Italy
| | - Manuel Morales
- Service of Medical Oncology, University Hospital Nuestra Señora de Candelaria, 38010 Santa Cruz de Tenerife, Canary Islands, Spain.,Medical Oncology, Hospiten Rambla, 38001 Santa Cruz de Tenerife, Canary Islands, Spain
| | - María Del Carmen Maeso
- Service of Pathology, University Hospital Nuestra Señora de Candelaria, 38010 Santa Cruz de Tenerife, Canary Islands, Spain
| | - María Del Pino García
- Department of Pathology, Hospiten Rambla, 38001 Santa Cruz de Tenerife, Canary Islands, Spain
| | - Ricardo Gutierrez
- Department of Pathology, School of Medicine, University of La Laguna, 38201 La Laguna, Canary Islands, Spain
| | - Francisco Valladares
- Department of Pathology, School of Medicine, University of La Laguna, 38201 La Laguna, Canary Islands, Spain
| | - Julio Ávila
- Laboratory of Developmental Biology, UD-Biochemistry and Molecular Biology and Centre for Biomedical Research of The Canary Islands, University of La Laguna, 38206 La Laguna, Canary Islands, Spain
| | - Lucio Díaz-Flores
- Department of Pathology, School of Medicine, University of La Laguna, 38201 La Laguna, Canary Islands, Spain
| | - Ali Mobasheri
- Department of Veterinary Preclinical Sciences, School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7XH, UK.,Center of Excellence in Genomic Medicine Research, King Fahd Medical Research Center, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Pablo Martín-Vasallo
- Laboratory of Developmental Biology, UD-Biochemistry and Molecular Biology and Centre for Biomedical Research of The Canary Islands, University of La Laguna, 38206 La Laguna, Canary Islands, Spain
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Rotoli D, Morales M, Ávila J, Maeso MDC, García MDP, Mobasheri A, Martín-Vasallo P. Commitment of Scaffold Proteins in the Onco-Biology of Human Colorectal Cancer and Liver Metastases after Oxaliplatin-Based Chemotherapy. Int J Mol Sci 2017; 18:ijms18040891. [PMID: 28441737 PMCID: PMC5412470 DOI: 10.3390/ijms18040891] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/15/2017] [Accepted: 04/19/2017] [Indexed: 01/13/2023] Open
Abstract
Scaffold proteins play pivotal roles in the regulation of signaling pathways, integrating external and internal stimuli to various cellular outputs. We report the pattern of cellular and subcellular expression of scaffoldins angiomotin-like 2 (AmotL2), FK506 binding protein 5 (FKBP51) and IQ motif containing GTPase-activating protein 1 (IQGAP1) in colorectal cancer (CRC) and metastases in liver resected after oxaliplatin-based chemotherapy (CT). Positive immunostaining for the three scaffoldins was found in most cells in healthy colon, tumor, healthy liver and metastasized liver. The patterns of expression of AmotL2, FKBP51 and IQGAP1 show the greatest variability in immune system cells and neurons and glia cells and the least in blood vessel cells. The simultaneous subcellular localization in tumor cells and other cell types within the tumor suggest an involvement of these three scaffoldins in cancer biology, including a role in Epithelial Mesenchymal Transition. The display in differential localization and quantitative expression of AmotL2, FKBP51, and IQGAP1 could be used as biomarkers for more accurate tumor staging and as potential targets for anti-cancer therapeutics by blocking or slowing down their interconnecting functions. Tough further research needs to be done in order to improve these assessments.
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Affiliation(s)
- Deborah Rotoli
- Laboratorio de Biología del Desarrollo, UD de Bioquímica y Biología Molecular and Centro de Investigaciones Biomédicas de Canarias (CIBICAN), Universidad de La Laguna, Av. Astrofísico Sánchez s/n., 38206 La Laguna, Spain.
- CNR-National Research Council, Institute of Endocrinology and Experimental Oncology (IEOS), Via Sergio Pansini 5, 80131 Naples, Italy.
| | - Manuel Morales
- Service of Medical Oncology, University Hospital Nuestra Señora de Candelaria, 38010 Santa Cruz de Tenerife, Spain.
- Service of Medical Oncology, Hospiten® Hospitals, 38001 Santa Cruz de Tenerife, Spain.
| | - Julio Ávila
- Laboratorio de Biología del Desarrollo, UD de Bioquímica y Biología Molecular and Centro de Investigaciones Biomédicas de Canarias (CIBICAN), Universidad de La Laguna, Av. Astrofísico Sánchez s/n., 38206 La Laguna, Spain.
| | - María Del Carmen Maeso
- Service of Pathology, University Hospital Nuestra Señora de Candelaria, 38010 Santa Cruz de Tenerife, Spain.
| | | | - Ali Mobasheri
- School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, GU2 7XH Guildford, UK.
- Center of Excellence in Genomic Medicine Research (CEGMR), King Fahd Medical Research Center (KFMRC), Faculty of Applied Medical Sciences, King AbdulAziz University, 21589 Jeddah, Saudi Arabia.
| | - Pablo Martín-Vasallo
- Laboratorio de Biología del Desarrollo, UD de Bioquímica y Biología Molecular and Centro de Investigaciones Biomédicas de Canarias (CIBICAN), Universidad de La Laguna, Av. Astrofísico Sánchez s/n., 38206 La Laguna, Spain.
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Rotoli D, Morales M, Del Carmen Maeso M, Del Pino García M, Morales A, Ávila J, Martín-Vasallo P. Expression and localization of the immunophilin FKBP51 in colorectal carcinomas and primary metastases, and alterations following oxaliplatin-based chemotherapy. Oncol Lett 2016; 12:1315-1322. [PMID: 27446431 PMCID: PMC4950813 DOI: 10.3892/ol.2016.4772] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 04/29/2016] [Indexed: 01/17/2023] Open
Abstract
The immunophilin FK506-binding protein 5 (FKBP51) is a scaffold protein that serves a pivotal role in the regulation of multiple signaling pathways, integrating external and internal stimuli into distinct signal outputs. In a previous study, we identified several genes that are significantly up- or downregulated in the peripheral white cells (PWCs) of colorectal adenocarcinoma (CRC) patients undergoing oxaliplatin-based chemotherapy. In our screening, FKBP51 gene expression was downregulated following chemotherapy. In order to determine whether this alteration in gene expression observed in PWCs may be detected at the protein level in tumors and metastases following the administration of adjuvant chemotherapy, an immunohistochemical analysis of FKBP51 in CRC and primary metastasis tissues was performed. The present study confirmed the downregulation of FKBP51 gene expression elicited by chemotherapy with folinic acid (leucovorin), fluorouracil and oxaliplatin in metastasized liver tissue that had been resected after the oxaliplatin-based chemotherapy, compared with tissue section samples of CRC from patients (prior to antineoplastic treatment). Furthermore, the results indicated that, in CRC tissue sections, the expression of FKBP51 protein is associated with an immature phenotype of stromal fibroblasts and with the epithelial-to-mesenchymal transition (EMT) phenotype, suggesting a role for this protein in the EMT process in CRC. Finally, the observation that only certain cells of the stroma express FKBP51 protein suggests a potential role for this immunophilin as a stroma cell subtype marker.
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Affiliation(s)
- Deborah Rotoli
- Developmental Biology Laboratory, UD- Biochemistry and Molecular Biology and Centre for Biomedical Research of the Canary Islands, La Laguna University, La Laguna, 38206 Tenerife, Spain; National Research Council, Institute of Endocrinology and Experimental Oncology, I-80131 Naples, Italy
| | - Manuel Morales
- Service of Medical Oncology, University Hospital Nuestra Señora de Candelaria, 38010 Santa Cruz de Tenerife, Spain; Unit of Medical Oncology, Hospiten Hospitals, Santa Cruz de Tenerife, 38001 Tenerife, Spain
| | - María Del Carmen Maeso
- Service of Pathology, University Hospital Nuestra Señora de Candelaria, 38010 Santa Cruz de Tenerife, Spain
| | | | - Araceli Morales
- Department of Physiology, Institute of Biomedical Technologies, School of Medicine and Centre for Biomedical Research of The Canary Islands, University of La Laguna, La Laguna, 38071 Santa Cruz de Tenerife, Spain
| | - Julio Ávila
- Developmental Biology Laboratory, UD- Biochemistry and Molecular Biology and Centre for Biomedical Research of the Canary Islands, La Laguna University, La Laguna, 38206 Tenerife, Spain
| | - Pablo Martín-Vasallo
- Developmental Biology Laboratory, UD- Biochemistry and Molecular Biology and Centre for Biomedical Research of the Canary Islands, La Laguna University, La Laguna, 38206 Tenerife, Spain
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Baker Bechmann M, Rotoli D, Morales M, Maeso MDC, García MDP, Ávila J, Mobasheri A, Martín-Vasallo P. Na,K-ATPase Isozymes in Colorectal Cancer and Liver Metastases. Front Physiol 2016; 7:9. [PMID: 26858653 PMCID: PMC4731494 DOI: 10.3389/fphys.2016.00009] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 01/11/2016] [Indexed: 02/01/2023] Open
Abstract
The goal of this study was to define Na,K-ATPase α and β subunit isoform expression and isozyme composition in colorectal cancer cells and liver metastases. The α1, α3, and β1 isoforms were the most highly expressed in tumor cells and metastases; in the plasma membrane of non-neoplastic cells and mainly in a cytoplasmic location in tumor cells. α1β1 and α3β1 isozymes found in tumor and metastatic cells exhibit the highest and lowest Na+ affinity respectively and the highest K+ affinity. Mesenchymal cell isozymes possess an intermediate Na+ affinity and a low K+ affinity. In cancer, these ions are likely to favor optimal conditions for the function of nuclear enzymes involved in mitosis, especially a high intra-nuclear K+ concentration. A major and striking finding of this study was that in liver, metastasized CRC cells express the α3β1 isozyme. Thus, the α3β1 isozyme could potentially serve as a novel exploratory biomarker of CRC metastatic cells in liver.
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Affiliation(s)
- Marc Baker Bechmann
- Laboratorio de Biología del Desarrollo, UD de Bioquímica y Biología Molecular and Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna Santa Cruz de Tenerife, Spain
| | - Deborah Rotoli
- Laboratorio de Biología del Desarrollo, UD de Bioquímica y Biología Molecular and Centro de Investigaciones Biomédicas de Canarias, Universidad de La LagunaSanta Cruz de Tenerife, Spain; Institute of Endocrinology and Experimental Oncology, National Research CouncilNaples, Italy
| | - Manuel Morales
- Service of Medical Oncology, University Hospital Nuestra Señora de CandelariaSanta Cruz de Tenerife, Spain; Medical Oncology, Hospiten HospitalsSanta Cruz de Tenerife, Spain
| | - María Del Carmen Maeso
- Service of Pathology, University Hospital Nuestra Señora de Candelaria Santa Cruz de Tenerife, Spain
| | | | - Julio Ávila
- Laboratorio de Biología del Desarrollo, UD de Bioquímica y Biología Molecular and Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna Santa Cruz de Tenerife, Spain
| | - Ali Mobasheri
- Department of Veterinary Preclinical Sciences, Faculty of Health and Medical Sciences, University of SurreyGuildford, UK; Faculty of Applied Medical Sciences, Center of Excellence in Genomic Medicine Research, King Fahd Medical Research Center, King AbdulAziz UniversityJeddah, Saudi Arabia
| | - Pablo Martín-Vasallo
- Laboratorio de Biología del Desarrollo, UD de Bioquímica y Biología Molecular and Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna Santa Cruz de Tenerife, Spain
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