1
|
Matsumoto M, Ogawa N, Fukuda T, Bando Y, Nishimura T, Usuda J. Protein interaction networks characterizing the A549 cells Klotho transfected are associated with activated pro-apoptotic Bim and suppressed Wnt/β-catenin signaling pathway. Sci Rep 2024; 14:2130. [PMID: 38267588 PMCID: PMC10808115 DOI: 10.1038/s41598-024-52616-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/21/2024] [Indexed: 01/26/2024] Open
Abstract
Invasive assays and lung tumor-bearing mice models using a human lung adenocarcinoma cell line A549 cells transfected with the Klotho (KL) gene, A549/KL cells, have confirmed that KL suppresses invasive/metastatic potential. This study aimed to identify the co-expression protein networks and proteomic profiles associated with A549/KL cells to understand how Klotho protein expression affects molecular networks associated with lung carcinoma malignancy. A two-step application of a weighted network correlation analysis to the cells' quantitative proteome datasets of a total of 6,994 proteins, identified by mass spectrometry-based proteomic analysis with data-independent acquisition (DIA), identified one network module as most significantly associated with the A549/KL trait. Upstream analyses, confirmed by western blot, implicated the pro-apoptotic Bim (Bcl-2-like protein 11) as a master regulator of molecular networks affected by Klotho. GeneMANIA interaction networks and quantitative proteome data implicated that Klotho interacts with two signaling axes: negatively with the Wnt/β-catenin axis, and positively by activating Bim. Our findings might contribute to the development of future therapeutic strategies.
Collapse
Affiliation(s)
- Mitsuo Matsumoto
- Department of Thoracic Surgery, Nippon Medical School, Tokyo, 113-8602, Japan
| | - Naomi Ogawa
- Department of Thoracic Surgery, Nippon Medical School, Tokyo, 113-8602, Japan
| | | | | | - Toshihide Nishimura
- Department of Translational Medicine Informatics, St. Marianna University School of Medicine, Kawasaki, Kanagawa, 216-8511, Japan.
| | - Jitsuo Usuda
- Department of Thoracic Surgery, Nippon Medical School, Tokyo, 113-8602, Japan.
| |
Collapse
|
2
|
Wang Y, Nasiri AR, Damsky WE, Perry CJ, Zhang XM, Rabin-Court A, Pollak MN, Shulman GI, Perry RJ. Uncoupling Hepatic Oxidative Phosphorylation Reduces Tumor Growth in Two Murine Models of Colon Cancer. Cell Rep 2019; 24:47-55. [PMID: 29972790 DOI: 10.1016/j.celrep.2018.06.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 05/07/2018] [Accepted: 06/01/2018] [Indexed: 10/28/2022] Open
Abstract
Obesity is associated with colon cancer pathogenesis, but the underlying mechanism is actively debated. Here, we confirm that diet-induced obesity promotes tumor growth in two murine colon cancer models and show that this effect is reversed by an orally administered controlled-release mitochondrial protonophore (CRMP) that acts as a liver-specific uncoupler of oxidative phosphorylation. This agent lowered circulating insulin, and the reduction of tumor growth was abrogated by an insulin infusion raising plasma insulin to the level of high-fat-fed mice. We also demonstrate that hyperinsulinemia increases glucose uptake and oxidation in vivo in tumors and that CRMP reverses these effects. This study provides evidence that perturbations of whole-organism energy balance or hepatic energy metabolism can influence neoplastic growth. Furthermore, the data show that glucose uptake and utilization by cancers in vivo are not necessarily constitutively high but rather may vary according to the hormonal milieu.
Collapse
Affiliation(s)
- Yongliang Wang
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Ali R Nasiri
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - William E Damsky
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Curtis J Perry
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Xian-Man Zhang
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Aviva Rabin-Court
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Michael N Pollak
- Department of Oncology, McGill University, Montreal, Quebec H3T 1E2, Canada; Department of Medicine, McGill University, Montreal, Quebec H3T 1E2, Canada; Segal Cancer Centre, Jewish General Hospital, Montreal, Quebec H3T 1E2, Canada
| | - Gerald I Shulman
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA; Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520, USA; Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Rachel J Perry
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.
| |
Collapse
|
3
|
Genome-wide haplotype association study identifies risk genes for non-small cell lung cancer. J Theor Biol 2018; 456:84-90. [PMID: 30096405 DOI: 10.1016/j.jtbi.2018.08.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 08/05/2018] [Accepted: 08/06/2018] [Indexed: 02/07/2023]
Abstract
Lung cancer is the leading cause of cancer-related death worldwide. Most lung cancer is non-small cell lung cancer (NSCLC), in which malignant cells form in the lung epithelium. Mutations in multiple genes and environmental factors both contribute to NSCLC, and although some NSCLC susceptibility genes have been characterized, the pathogenesis of this disease remains unclear. To identify genes conferring NSCLC risk and determine their associated pathological mechanism, we combined genome-wide haplotype associated analysis with gene prioritization using 224,677 SNPs in 37 NSCLC cell lines and 116 unrelated European individuals. Five candidate genes were identified: ESR1, TGFBR1, INSR, CDH3, and MAP3K5. All of these have previously been implicated in NSCLC, with the exception of CDH3, which can therefore be considered a novel indicator of NSCLC risk. Functional annotation confirmed the relationship between these five genes and NSCLC. Our findings are indicative of the underlying pathological mechanisms of NSCLC and provide information to support future directions in diagnosing and treating NSCLC.
Collapse
|
4
|
Jiang J, Ren HY, Geng GJ, Mi YJ, Liu Y, Li N, Yang SY, Shen DY. Oncogenic activity of insulin in the development of non-small cell lung carcinoma. Oncol Lett 2017; 15:447-452. [PMID: 29387228 DOI: 10.3892/ol.2017.7347] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 08/17/2017] [Indexed: 12/19/2022] Open
Abstract
Insulin is associated with the progression of numerous different types of cancer. However, the association between insulin and non-small cell lung carcinoma (NSCLC) remains unknown. The aim of the present study was to evaluate the role of insulin in the proliferation, migration and drug resistance of NSCLC cells, and to determine whether the phosphoinositide 3-kinase/protein kinase B (PI3K/Akt) pathway was involved. NSCLC cells were treated with insulin in the absence or presence of LY294002, an inhibitor of the PI3K/Akt pathway. Following co-incubation with insulin, cell proliferation and drug resistance were measured by MTT; cell migration was examined by wound healing and Transwell assays; and the expression of cyclin A, proliferating cell nuclear antigen (PCNA), p27, matrix metalloproteinase 3 (MMP3), P-gp and proteins involved in the PI3K/Akt pathway were assessed via western blotting. The results of the current study demonstrated that insulin enhanced the proliferation, migration and drug resistance of NSCLC cells. Correspondingly, insulin upregulated the expression of cyclin A, PCNA, MMP3, P-gp and downregulated p27 expression in NSCLC cells. Following treatment with insulin, it was demonstrated that phospho-Akt expression increased in a dose-dependent manner. However, the effects of insulin on NSCLC cells was inhibited by the PI3K/Akt pathway inhibitor LY294002. Therefore, the results of the current study indicate that insulin is associated with the development of NSCLC by activating the PI3K/Akt pathway. This may improve understanding of the mechanism of action of insulin in NSCLC in the future.
Collapse
Affiliation(s)
- Jie Jiang
- Department of Thoracic Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| | - Hong-Yue Ren
- Department of Pathology, The Affiliated Southeast Hospital of Xiamen University, Zhangzhou, Fujian 363000, P.R. China
| | - Guo-Jun Geng
- Department of Thoracic Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| | - Yan-Jun Mi
- Department of Thoracic Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| | - Yu Liu
- Department of Biobank, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| | - Ning Li
- Department of Thoracic Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| | - Shu-Yu Yang
- Department of Xiamen Diabetes Institute, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| | - Dong-Yan Shen
- Department of Biobank, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| |
Collapse
|
5
|
Dai D, Wang Q, Li X, Liu J, Ma X, Xu W. Klotho inhibits human follicular thyroid cancer cell growth and promotes apoptosis through regulation of the expression of stanniocalcin-1. Oncol Rep 2015; 35:552-8. [PMID: 26531219 DOI: 10.3892/or.2015.4358] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 07/29/2015] [Indexed: 11/06/2022] Open
Abstract
The new anti-aging gene Klotho has been identified as a multi-functional humoral factor which influences multiple biological processes, including tumor progression. Although ample evidence indicates that Klotho plays important roles in cervical, lung and breast cancer, the role and mechanism of Klotho in thyroid cancer are still unclear. The present study aimed to investigate the effects and mechanisms of Klotho in human thyroid cancer cell lines FTC133 and FTC238. Klotho overexpression markedly reduced thyroid cancer FTC133 and FTC238 cell proliferation and enhanced apoptosis, whereas, Klotho silencing in the FTC133 and FTC238 cells increased cell growth. Moreover, soluble human KL1 (sKL) and Klotho overexpression had a similar effect on FTC133 and FTC238 cell growth. A high level of Klotho was also found to be associated with a low level of stanniocalcin 1 (STC1) in both the FTC133 and FTC238 cell lines. STC1 silencing significantly inhibited thyroid cancer cell proliferation, whereas recombinant human STC1 (hSTC1) markedly enhanced cell proliferation. In addition, our study demonstrated that hSTC1 treatment attenuated Klotho-induced inhibition of cell proliferation and promotion of apoptosis. Our data revealed the existence of a moderating effect between Klotho and STC1, where Klotho may inhibit thyroid tumor progression by inhibiting the tumor marker level of STC1.
Collapse
Affiliation(s)
- Dong Dai
- Department of Molecular Imaging and Nuclear Medicine, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, P.R. China
| | - Qi Wang
- Department of Molecular Imaging and Nuclear Medicine, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, P.R. China
| | - Xiaofeng Li
- Department of Molecular Imaging and Nuclear Medicine, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, P.R. China
| | - Jianjing Liu
- Department of Molecular Imaging and Nuclear Medicine, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, P.R. China
| | - Xiaoying Ma
- Department of Molecular Imaging and Nuclear Medicine, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, P.R. China
| | - Wengui Xu
- Department of Molecular Imaging and Nuclear Medicine, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, P.R. China
| |
Collapse
|
6
|
Vigneri PG, Tirrò E, Pennisi MS, Massimino M, Stella S, Romano C, Manzella L. The Insulin/IGF System in Colorectal Cancer Development and Resistance to Therapy. Front Oncol 2015; 5:230. [PMID: 26528439 PMCID: PMC4606066 DOI: 10.3389/fonc.2015.00230] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/01/2015] [Indexed: 12/13/2022] Open
Abstract
The insulin/insulin-like growth factor (IGF) system is a major determinant in the pathogenesis and progression of colorectal cancer (CRC). Indeed, several components of this signaling network, including insulin, IGF-1, IGF-2, the IGF-binding proteins, the insulin receptor (IR), the IGF-1 receptor (IGF-1R), and IR substrate proteins 1 and 2 contribute to the transformation of normal colon epithelial cells. Moreover, the insulin/IGF system is also implicated in the development of resistance to both chemotherapeutic drugs and epidermal growth factor receptor targeted agents. The identification of hybrid receptors comprising both the IR and IGF-1R adds further complexity to this signaling network. Thus, a comprehensive understanding of the biological functions performed by each component of the insulin/IGF system is required to design successful drugs for the treatment of CRC patients.
Collapse
Affiliation(s)
- Paolo Giovanni Vigneri
- Laboratory of Experimental Oncology and Hematology, Department of Clinical and Experimental Medicine, Faculty of Medicine, University of Catania , Catania , Italy
| | - Elena Tirrò
- Laboratory of Experimental Oncology and Hematology, Department of Clinical and Experimental Medicine, Faculty of Medicine, University of Catania , Catania , Italy
| | - Maria Stella Pennisi
- Laboratory of Experimental Oncology and Hematology, Department of Clinical and Experimental Medicine, Faculty of Medicine, University of Catania , Catania , Italy
| | - Michele Massimino
- Laboratory of Experimental Oncology and Hematology, Department of Clinical and Experimental Medicine, Faculty of Medicine, University of Catania , Catania , Italy
| | - Stefania Stella
- Laboratory of Experimental Oncology and Hematology, Department of Clinical and Experimental Medicine, Faculty of Medicine, University of Catania , Catania , Italy
| | - Chiara Romano
- Laboratory of Experimental Oncology and Hematology, Department of Clinical and Experimental Medicine, Faculty of Medicine, University of Catania , Catania , Italy
| | - Livia Manzella
- Laboratory of Experimental Oncology and Hematology, Department of Clinical and Experimental Medicine, Faculty of Medicine, University of Catania , Catania , Italy
| |
Collapse
|
7
|
Abbruzzese C, Diodoro MG, Sperduti I, Mileo AM, Pattaro G, De Salvo L, Cosimelli M, Perrotti N, Paggi MG. Detection of phosphorylated insulin receptor in colorectal adenoma and adenocarcinoma: implications for prognosis and clinical outcome. J Cell Physiol 2015; 230:562-7. [PMID: 25102778 DOI: 10.1002/jcp.24733] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 07/28/2014] [Indexed: 02/06/2023]
Abstract
Colorectal carcinoma remains among the most frequent causes of cancer death. Besides the well-known genetic predisposition, a key role in colorectal adenoma and adenocarcinoma etio-pathogenesis, mainly in sporadic cases, is played by definite risk factors, such as obesity, type 2 diabetes, insulin resistance, hyper-insulinemia, and insulin therapy. These epidemiological data motivated us to determine, by means of immunohistochemistry, the amount of activated (phosphorylated) insulin receptor in archival samples from 22 colorectal adenoma and 117 adenocarcinoma patients, with the objective to estimate the role of this factor in colorectal epithelium transformation and cancer progression. Statistical analysis of the results clearly showed that positive staining for phosphorylated insulin receptor was significantly more frequent in adenomas than adenocarcinomas (P < 0.0001) and, within the adenocarcinoma cohort, it was more frequent in low-grade tumors (P = 0.005). In adenomas, staining was exclusively cytoplasmic, while in adenocarcinomas it was cytoplasmic and/or nuclear (P < 0.0001). Interestingly, disease-free survival in colorectal adenocarcinoma patients pointed out a significantly better prognosis for those bearing a positive staining for phosphorylated insulin receptor (P = 0.02). From these data, we can argue that activated insulin receptor plays a fundamental role at the early stages of tumorigenesis, where late stages could be characterized by a shift toward more active oncogenic drivers. Determining the amount of phosphorylated insulin receptor could thus represent a novel prognostic/predictive tool in colorectal adenocarcinoma patients.
Collapse
Affiliation(s)
- Claudia Abbruzzese
- Department of Experimental Oncology, Regina Elena National Cancer Institute, IRCCS, Rome, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Mattarocci S, Abbruzzese C, Mileo AM, Carosi M, Pescarmona E, Vico C, Federico A, Vizza E, Corrado G, Arisi I, Felsani A, Paggi MG. Identification of pivotal cellular factors involved in HPV-induced dysplastic and neoplastic cervical pathologies. J Cell Physiol 2014; 229:463-70. [PMID: 24105779 DOI: 10.1002/jcp.24465] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 08/29/2013] [Indexed: 12/12/2022]
Abstract
Cervical carcinoma represents the paradigm of virus-induced cancers, where virtually all cervical cancers come from previous "high-risk" HPV infection. The persistent expression of the HPV viral oncoproteins E6 and E7 is responsible for the reprogramming of fundamental cellular functions in the host cell, thus generating a noticeable, yet only partially explored, imbalance in protein molecular networks and cell signaling pathways. Eighty-eight cellular factors, identified as HPV direct or surrogate targets, were chosen and monitored in a retrospective analysis for their mRNA expression in HPV-induced cervical lesions, from dysplasia to cancer. Real-time quantitative PCR (qPCR) was performed by using formalin-fixed, paraffin embedded archival samples. Gene expression analysis identified 40 genes significantly modulated in LSIL, HSIL, and squamous cervical carcinoma. Interestingly, among these, the expression level of a panel of four genes, TOP2A, CTNNB1, PFKM, and GSN, was able to distinguish between normal tissues and cervical carcinomas. Immunohistochemistry was also done to assess protein expression of two genes among those up-regulated during the transition between dysplasia and carcinoma, namely E2F1 and CDC25A, and their correlation with clinical parameters. Besides the possibility of significantly enhancing the use of some of these factors in diagnostic or prognostic procedures, these data clearly outline specific pathways, and thus key biological processes, altered in cervical dysplasia and carcinoma. Deeper insight on how these molecular mechanisms work may help widen the spectrum of novel innovative approaches to these virus-induced cell pathologies.
Collapse
Affiliation(s)
- Stefano Mattarocci
- Department of Molecular Biology, University of Geneva, Geneva, Switzerland
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Chang B, Kim J, Jeong D, Jeong Y, Jeon S, Jung SI, Yang Y, Kim KI, Lim JS, Kim C, Lee MS. Klotho inhibits the capacity of cell migration and invasion in cervical cancer. Oncol Rep 2012; 28:1022-8. [PMID: 22710352 DOI: 10.3892/or.2012.1865] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 05/22/2012] [Indexed: 11/05/2022] Open
Abstract
Aberrant activation of the Wnt/β-catenin signaling pathway is common in human cervical cancers. However, the mechanisms of Wnt activation in cervical cancer remain largely unknown. In the present study, we demonstrate that Klotho, a Wnt antagonist, is downregulated in invasive human cervical tumors and in a cell line we analyzed. Our data demonstrated that in vivo Klotho expression was not observed in invasive cervical carcinoma. In vitro restoration of Klotho expression in SiHa cells resulted in a decreased cell motility and invasiveness through upregulation of E-cadherin, downregulation of N-cadherin and reduced expression of MMP7 and -9. Ectopic expression of Klotho also reduced the expression of the epithelial-to-mesenchymal transition (EMT) transcription factors Slug and Twist. Furthermore, Klotho causes a significant inhibition of the Wnt/β-catenin pathway in cervical cancer cells, as supported by the expression of Wnt/β-catenin transcriptional target genes such as c-Myc and cyclin D1. Consequently, our findings demonstrate for the first time that Klotho regulates tumor invasion through the EMT process and provide novel mechanistic insights into the role of Klotho in cervical cancer progression and contribute to treatment for metastatic cervical cancer patients.
Collapse
Affiliation(s)
- Boogi Chang
- Research Center for Women's Diseases and Department of Biological Sciences, Sookmyung Women's University, Seoul, Republic of Korea
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Abbruzzese C, Mattarocci S, Pizzuti L, Mileo AM, Visca P, Antoniani B, Alessandrini G, Facciolo F, Amato R, D'Antona L, Rinaldi M, Felsani A, Perrotti N, Paggi MG. Determination of SGK1 mRNA in non-small cell lung cancer samples underlines high expression in squamous cell carcinomas. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2012; 31:4. [PMID: 22240294 PMCID: PMC3284423 DOI: 10.1186/1756-9966-31-4] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Accepted: 01/12/2012] [Indexed: 12/17/2022]
Abstract
Background Lung cancer represents the most frequent cause of death for cancer. In non-small cell lung cancer (NSCLC), which accounts for the vast majority of this disease, only early detection and treatment, when possible, may significantly affect patient's prognosis. An important role in NSCLC malignancy is attributed to the signal transduction pathways involving PI3Kinase, with consequent activation of the AKT family factors. The serum and glucocorticoid kinase (SGK) factors, which share high structural and functional homologies with the AKT factors, are a family of ubiquitously expressed serine/threonine kinases under the control of cellular stress and hormones. SGK1 is the most represented SGK member. Methods By means of immunohistochemistry and quantitative real-time PCR, we determined SGK1 protein and mRNA expression in a cohort of 66 formalin-fixed, paraffin-embedded NSCLC surgical samples. All samples belonged to patients with a well-documented clinical history. Results mRNA expression was significantly higher in squamous cell carcinomas, and correlated with several clinical prognostic indicators, being elevated in high-grade tumors and in tumors with bigger size and worse clinical stage. No correlation was found between SGK1 protein expression and these clinical parameters. Conclusions This explorative analysis of SGK1 expression in NSCLC samples highlights the potential role of this factor in NSCLC patients' prognosis. Moreover, the higher expression in the squamous cell carcinoma subtype opens new therapeutic possibilities in this NSCLC subtype by designing specific kinase inhibitors.
Collapse
Affiliation(s)
- Claudia Abbruzzese
- Department of Development of Therapeutic Programs, National Cancer Institute Regina Elena, IRCCS, 00144 Rome, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Kim JS, Kim ES, Liu D, Lee JJ, Solis L, Behrens C, Lippman SM, Hong WK, Wistuba II, Lee HY. Prognostic impact of insulin receptor expression on survival of patients with nonsmall cell lung cancer. Cancer 2011; 118:2454-65. [PMID: 21952750 DOI: 10.1002/cncr.26492] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 06/26/2011] [Accepted: 07/18/2011] [Indexed: 01/08/2023]
Abstract
BACKGROUND The purpose of this study was to characterize insulin receptor (IR) and insulin-like growth factor-1 receptor (IGF-1R) expression in patients with nonsmall cell lung cancer (NSCLC). METHODS A total of 459 patients who underwent curative resection of NSCLC were studied (median follow-up duration, 4.01 years). Expression of the IR and IGF-1R protein in tumor specimens was assessed immunohistochemically using tissue microarrays. RESULTS The cytoplasmic IR score was higher in patients with adenocarcinoma (ADC) than in those with squamous cell carcinoma (SCC), whereas cytoplasmic IGF-1R score was higher in patients with SCC than those with ADC. Neither IR nor IGF-1R expression was associated with sex, smoking history, or clinical stage. Patients with positive IR or IGF-1R expression levels had poor recurrence-free (RFS) (3.8 vs 3.3 years; 3.8 vs 2.0 years, respectively), but similar overall survival (OS). Patients with high expression levels of IR and IGF-1R had shorter RFS and OS compared with those with low levels of IR and/or IGF-1R expression. Finally, a multivariate analysis revealed the impact of IR, but not of IGF-1R, as an independent predictive marker of NSCLC survival: hazard ratio (HR) for OS, 1.005 (95% confidence interval [CI], 1.001-1.010], HR for RFS, 1.005 (95% CI, 1.001-1.009), when IR score was tested as a continuous variable. CONCLUSIONS Overexpression of IR predicts a poor survival among patients with NSCLC, especially those with SCC. These results might serve as future guidance to the clinical trials involving IR or IGR-1R targeting agents.
Collapse
Affiliation(s)
- Jin-Soo Kim
- Department of Thoracic/Head & Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Radulescu RT. Intracellular insulin in human tumors: examples and implications. Diabetol Metab Syndr 2011; 3:5. [PMID: 21457557 PMCID: PMC3077318 DOI: 10.1186/1758-5996-3-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Accepted: 04/01/2011] [Indexed: 12/04/2022] Open
Abstract
Insulin is one of the major metabolic hormones regulating glucose homeostasis in the organism and a key growth factor for normal and neoplastic cells. Work conducted primarily over the past 3 decades has unravelled the presence of insulin in human breast cancer tissues and, more recently, in human non-small cell lung carcinomas (NSCLC). These findings have suggested that intracellular insulin is involved in the development of these highly prevalent human tumors. A potential mechanism for such involvement is insulin's binding and inactivation of the retinoblastoma tumor suppressor protein (RB) which in turn is likely controlled by insulin-degrading enzyme (IDE). This model and its supporting data are collectively covered in this survey in order to provide further insight into insulin-driven oncogenesis and its reversal through future anticancer therapeutics.
Collapse
|
13
|
Paggi MG, Vona R, Abbruzzese C, Malorni W. Gender-related disparities in non-small cell lung cancer. Cancer Lett 2010; 298:1-8. [PMID: 20826048 DOI: 10.1016/j.canlet.2010.08.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2010] [Revised: 08/10/2010] [Accepted: 08/13/2010] [Indexed: 02/08/2023]
Abstract
Epidemiological studies clearly outline some disparities in cancer onset, progression as well as prognosis and therapeutic response between sexes. In particular, in lung cancer, the leading cause of cancer death, at least in Western countries, a gender disparity appears now to emerge, especially for non-small cell lung cancer (NSCLC). Such a disparity is apparently due to a variety of mechanisms, ranging from genetic and epigenetic differences to gender-specific lifestyle as well as to behavioral causes and, clearly, to sex hormones activity. Here we briefly recapitulate gender differences in terms of risk factors, histopathological features and pathogenetic mechanisms in NSCLC, and hypothesize that a gender-oriented pharmacology could beneficially impact on innovative therapeutic strategies.
Collapse
Affiliation(s)
- Marco G Paggi
- Department of Development of Therapeutic Programs, National Cancer Institute "Regina Elena", Via Elio Chianesi 53, 00144 Rome, Italy
| | | | | | | |
Collapse
|
14
|
Chen B, Wang X, Zhao W, Wu J. Klotho inhibits growth and promotes apoptosis in human lung cancer cell line A549. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2010; 29:99. [PMID: 20642846 PMCID: PMC2912837 DOI: 10.1186/1756-9966-29-99] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 07/19/2010] [Indexed: 01/02/2023]
Abstract
Background Klotho, as a new anti-aging gene, can shed into circulation and act as a multi-functional humoral factor that influences multiple biological processes. Recently, published studies suggest that klotho can also serve as a potential tumor suppressor. The aim of this study is to investigate the effects and possible mechanisms of action of klotho in human lung cancer cell line A549. Methods In this study, plasmids encoding klotho or klotho specific shRNAs were constructed to overexpress or knockdown klotho in vitro. A549 cells were respectively treated with pCMV6-MYC-KL or klotho specific shRNAs. The MTT assay was used to evaluate the cytotoxic effects of klotho and flow cytometry was utilized to observe and detect the apoptosis of A549 cells induced by klotho. The activation of IGF-1/insulin signal pathways in A549 cells treated by pCMV6-MYC-KL or shRNAs were evaluated by western blotting. The expression levels of bcl-2 and bax transcripts were evaluated by quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Results Overexpression of klotho reduced the proliferation of lung cancer A549 cells, whereas klotho silencing in A549 cells enhanced proliferation. Klotho did not show any effects on HEK-293 cells. Klotho overexpression in A549 cells was associated with reduced IGF-1/insulin-induced phosphorylation of IGF-1R (IGF-1 receptor)/IR (insulin receptor) (P < 0.01). Overexpression of klotho can promote the apoptosis of A549 cells (P < 0.01). Overexpression of klotho, a bcl family gene bax, was found up-regulated and bcl-2, an anti-apoptosis gene, was found down-regulated (P < 0.01). In contrast, bax and bcl-2 were found down-regulated (P < 0.05) and up-regulated (P < 0.01), respectively when silencing klotho using shRNAs. Conclusions Klotho can inhibit proliferation and increase apoptosis of A549 cells, this may be partly due to the inhibition of IGF-1/insulin pathways and involving regulating the expression of the apoptosis-related genes bax/bcl-2. Thus, klotho can serve as a potential tumor suppressor in A549 cells.
Collapse
Affiliation(s)
- Bo Chen
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China
| | | | | | | |
Collapse
|
15
|
Oncoprotein metastasis and its suppression revisited. J Exp Clin Cancer Res 2010; 29:30. [PMID: 20380702 PMCID: PMC2855699 DOI: 10.1186/1756-9966-29-30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Accepted: 04/09/2010] [Indexed: 11/16/2022] Open
Abstract
The past two decades have witnessed an increasing appreciation of the role of the tumor microenvironment, of genetic and epigenetic alterations in normal cells adjacent to tumors and of the migration of normal cells with aberrant intrinsic properties in cancer pathophysiology. Aside from these insights, a novel concept termed "oncoprotein metastasis" (OPM) has recently been advanced and proposed to reflect protein-based neoplastic phenomena that might occur even before any modifications relating to the morphology, location or (epi)genetic outfit of cells during the malignant process. Here, evidence is presented that supports the OPM perception and thus should contribute not only to further rethink the definition of a normal cell, but also the treatment of cancer disease in the years to come.
Collapse
|