1
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Chagas PS, Chagas HIS, Naeini SE, Bhandari B, Gouron J, Malta TM, Salles ÉL, Wang LP, Yu JC, Baban B. Network-Based Transcriptome Analysis Reveals FAM3C as a Novel Potential Biomarker for Glioblastoma. J Cell Biochem 2024:e30612. [PMID: 38923575 DOI: 10.1002/jcb.30612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 05/23/2024] [Accepted: 05/28/2024] [Indexed: 06/28/2024]
Abstract
Glioblastoma (GBM) is the most common form of malignant primary brain tumor with a high mortality rate. The aim of the present study was to investigate the clinical significance of Family with Sequence Similarity 3, Member C, FAM3C, in GBM using bioinformatic-integrated analysis. First, we performed the transcriptomic integration analysis to assess the expression profile of FAM3C in GBM using several data sets (RNA-sequencing and scRNA-sequencing), which were obtained from TCGA and GEO databases. By using the STRING platform, we investigated FAM3C-coregulated genes to construct the protein-protein interaction network. Next, Metascape, Enrichr, and CIBERSORT databases were used. We found FAM3C high expression in GBM with poor survival rates. Further, we observed, via FAM3C coexpression network analysis, that FAM3C plays key roles in several hallmarks of cancer. Surprisingly, we also highlighted five FAM3C‑coregulated genes overexpressed in GBM. Specifically, we demonstrated the association between the high expression of FAM3C and the abundance of the different immune cells, which may markedly worsen GBM prognosis. For the first time, our findings suggest that FAM3C not only can be a new emerging biomarker with promising therapeutic values to GBM patients but also gave a new insight into a potential resource for future GBM studies.
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Affiliation(s)
- Pablo Shimaoka Chagas
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, Georgia, USA
- DCG Center for Excellence in Research, Scholarship and Innovation (CERSI) Augusta University, Augusta, Georgia, USA
| | | | - Sahar Emami Naeini
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Bidhan Bhandari
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Jules Gouron
- DCG Center for Excellence in Research, Scholarship and Innovation (CERSI) Augusta University, Augusta, Georgia, USA
| | - Tathiane M Malta
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Évila Lopes Salles
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Lei P Wang
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, Georgia, USA
- DCG Center for Excellence in Research, Scholarship and Innovation (CERSI) Augusta University, Augusta, Georgia, USA
- Georgia Institute of Cannabis Research, Medicinal Cannabis of Georgia LLC, Augusta, Georgia, USA
| | - Jack C Yu
- Department of Surgery, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Babak Baban
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, Georgia, USA
- DCG Center for Excellence in Research, Scholarship and Innovation (CERSI) Augusta University, Augusta, Georgia, USA
- Georgia Institute of Cannabis Research, Medicinal Cannabis of Georgia LLC, Augusta, Georgia, USA
- Department of Neurology, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
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2
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Flores RMA, Pantaleão SQ, Araujo SC, Malpartida HMG, Honorio KM. Structural analysis of factors related to FAM3C/ILEI dimerization and identification of inhibitor candidates targeting cancer treatment. Comput Biol Chem 2023; 104:107869. [PMID: 37068312 DOI: 10.1016/j.compbiolchem.2023.107869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 04/05/2023] [Accepted: 04/09/2023] [Indexed: 04/19/2023]
Abstract
FAM3 is a superfamily of four cytokines that maintain a single globular structure β -β -α of three classes: FAM3A, B, C and D. FAM3C was the first member of this family related to cancer and is functionally characterized as an essential factor for the epithelial-mesenchymal transition (EMT), leading to late delays in tumor progression. Due to its crucial role in EMT and metastasis, FAM3C has been termed an interleukin-like EMT (ILEI) inducer. There are several studies on the part of FAM3C in the progression of cancer and other diseases. However, little is known about its cellular receptors and possible inhibitors. In this study, based on in silico approaches, we performed structural analyses of factors related to FAM3C/ILEI dimerization. We also identified four possible inhibitor candidates, expected to be exciting prototypes and could be submitted to future biological tests targeting cancer treatment.
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Affiliation(s)
| | - Simone Queiroz Pantaleão
- Center for Mathematics, Computing, and Cognition, Federal University of ABC, 09210-170 Santo André, SP, Brazil
| | - Sheila Cruz Araujo
- Center for Sciences Natural and Human, Federal University of ABC, 09210-170 Santo André, SP, Brazil
| | | | - Kathia Maria Honorio
- Center for Sciences Natural and Human, Federal University of ABC, 09210-170 Santo André, SP, Brazil; School of Arts, Sciences and Humanities, University of São Paulo, 03828-0000 São Paulo, SP, Brazil.
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3
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Ruozi G, Bortolotti F, Mura A, Tomczyk M, Falcione A, Martinelli V, Vodret S, Braga L, Dal Ferro M, Cannatà A, Zentilin L, Sinagra G, Zacchigna S, Giacca M. Cardioprotective factors against myocardial infarction selected in vivo from an AAV secretome library. Sci Transl Med 2022; 14:eabo0699. [PMID: 36044596 DOI: 10.1126/scitranslmed.abo0699] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Therapies for patients with myocardial infarction and heart failure are urgently needed, in light of the breadth of these conditions and lack of curative treatments. To systematically identify previously unidentified cardioactive biologicals in an unbiased manner in vivo, we developed cardiac FunSel, a method for the systematic, functional selection of effective factors using a library of 1198 barcoded adeno-associated virus (AAV) vectors encoding for the mouse secretome. By pooled vector injection into the heart, this library was screened to functionally select for factors that confer cardioprotection against myocardial infarction. After two rounds of iterative selection in mice, cardiac FunSel identified three proteins [chordin-like 1 (Chrdl1), family with sequence similarity 3 member C (Fam3c), and Fam3b] that preserve cardiomyocyte viability, sustain cardiac function, and prevent pathological remodeling. In particular, Chrdl1 exerted its protective activity by binding and inhibiting extracellular bone morphogenetic protein 4 (BMP4), which resulted in protection against cardiomyocyte death and induction of autophagy in cardiomyocytes after myocardial infarction. Chrdl1 also inhibited fibrosis and maladaptive cardiac remodeling by binding transforming growth factor-β (TGF-β) and preventing cardiac fibroblast differentiation into myofibroblasts. Production of secreted and circulating Chrdl1, Fam3c, and Fam3b from the liver also protected the heart from myocardial infarction, thus supporting the use of the three proteins as recombinant factors. Together, these findings disclose a powerful method for the in vivo, unbiased selection of tissue-protective factors and describe potential cardiac therapeutics.
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Affiliation(s)
- Giulia Ruozi
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy
| | - Francesca Bortolotti
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy.,Cardiovascular Department, ASUGI, 34149 Trieste, Italy
| | - Antonio Mura
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy
| | - Mateusz Tomczyk
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy.,British Heart Foundation Centre of Research Excellence, School of Cardiovascular Medicine and Sciences, King's College London, London SE5 9NU, UK
| | - Antonella Falcione
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy
| | - Valentina Martinelli
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy
| | - Simone Vodret
- Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy
| | - Luca Braga
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy.,British Heart Foundation Centre of Research Excellence, School of Cardiovascular Medicine and Sciences, King's College London, London SE5 9NU, UK
| | | | - Antonio Cannatà
- Cardiovascular Department, ASUGI, 34149 Trieste, Italy.,British Heart Foundation Centre of Research Excellence, School of Cardiovascular Medicine and Sciences, King's College London, London SE5 9NU, UK
| | - Lorena Zentilin
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy
| | - Gianfranco Sinagra
- Cardiovascular Department, ASUGI, 34149 Trieste, Italy.,Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy
| | - Serena Zacchigna
- Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy.,Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy
| | - Mauro Giacca
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34139 Trieste, Italy.,British Heart Foundation Centre of Research Excellence, School of Cardiovascular Medicine and Sciences, King's College London, London SE5 9NU, UK.,Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy
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4
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Zhou J, Jiang H, Jiang H, Fan Y, Zhang J, Ma X, Yang X, Sun Y, Zhao X. The ILEI/LIFR complex induces EMT via the Akt and ERK pathways in renal interstitial fibrosis. J Transl Med 2022; 20:54. [PMID: 35093095 PMCID: PMC8800269 DOI: 10.1186/s12967-022-03265-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 01/17/2022] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is characterized by high morbidity and mortality and is difficult to cure. Renal interstitial fibrosis (RIF) is a major determinant of, and commonly occurs within, CKD progression. Epithelial mesenchymal transition (EMT) has been identified as a crucial process in triggering renal interstitial fibrosis (RIF). Interleukin-like EMT inducer (ILEI) is an important promotor of EMT; this study aims to elucidate the mechanisms involved. METHODS Male C57BL6/J mouse were randomly divided into 6 groups: sham (n = 10), sham with negative control (NC) shRNA (sham + NC, n = 10), sham with ILEI shRNA (sham + shILEI, n = 10), unilateral ureteral obstruction (UUO, n = 10), UUO with NC (UUO + NC, n = 10) and UUO with ILEI shRNA (UUO + shILEI, n = 10). Hematoxylin and eosin (H&E), Masson, and immunohistochemical (IHC) staining and western blotting (WB) were performed on murine kidney tissue to identify the function and mechanism of ILEI in RIF. In vitro, ILEI was overexpressed to induce EMT in HK2 cells and analyzed via transwell, WB, real-time PCR, and co-immunoprecipitation. Finally, tissue from 12 pediatric CKD patients (seven with RIF and five without RIF) were studied with H&E, Masson, and IHC staining. RESULTS Our in vitro model revealed that ILEI facilitates RIF in the UUO model via the Akt and ERK pathways. Further experiments in vivo and in vitro revealed that ILEI promotes renal tubular EMT by binding and activating leukemia inhibitory factor receptor (LIFR), in which phosphorylation of Akt and ERK is involved. We further find markedly increased expression levels of ILEI and LIFR in kidneys from pediatric CKD patients with RIF. CONCLUSION Our results indicate that ILEI may be a useful biomarker for renal fibrosis and a potential therapeutic target for modulating RIF.
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Affiliation(s)
- Jieqing Zhou
- Department of Pediatrics, First Hospital of China Medical University, Shenyang, 110001, China
| | - Hong Jiang
- Department of Pediatrics, First Hospital of China Medical University, Shenyang, 110001, China
| | - Hongkun Jiang
- Department of Pediatrics, First Hospital of China Medical University, Shenyang, 110001, China
| | - Yan Fan
- Department of Pediatrics, First Hospital of China Medical University, Shenyang, 110001, China
| | - Jing Zhang
- Department of Pediatrics, First Hospital of China Medical University, Shenyang, 110001, China
| | - Xiaoxue Ma
- Department of Pediatrics, First Hospital of China Medical University, Shenyang, 110001, China
| | - Xuewei Yang
- Department of Pediatrics, First Hospital of China Medical University, Shenyang, 110001, China
| | - Yu Sun
- Department of Pediatrics, First Hospital of China Medical University, Shenyang, 110001, China
| | - Xing Zhao
- Department of Pediatrics, First Hospital of China Medical University, Shenyang, 110001, China.
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5
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Watanabe N, Nakano M, Mitsuishi Y, Hara N, Mano T, Iwata A, Murayama S, Suzuki T, Ikeuchi T, Nishimura M. Transcriptional downregulation of FAM3C/ILEI in the Alzheimer's brain. Hum Mol Genet 2021; 31:122-132. [PMID: 34378027 DOI: 10.1093/hmg/ddab226] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/29/2021] [Accepted: 08/02/2021] [Indexed: 11/14/2022] Open
Abstract
Amyloid-β (Aβ) accumulation in the brain triggers the pathogenic cascade for Alzheimer's disease (AD) development. The secretory protein FAM3C (also named ILEI) is a candidate for an endogenous suppressor of Aβ production. In this study, we found that FAM3C expression was transcriptionally downregulated in the AD brain. To determine the transcriptional mechanism of the human FAM3C gene, we delineated the minimal 5'-flanking sequence required for basal promoter activity. From a database search for DNA-binding motifs, expression analysis using cultured cells, and promoter DNA-binding assays, we identified SP1 and EBF1 as candidate basal transcription factors for FAM3C, and found that SMAD1 was a putative inducible transcription factor and KLF6 was a transcription repressor for FAM3C. Genomic deletion of the basal promoter sequence from HEK293 and Neuro-2a cells markedly reduced endogenous expression of FAM3C and abrogated SP1- or EBF1-mediated induction of FAM3C. Nuclear protein extracts from AD brains contained lower levels of SP1 and EBF1 than did those from control brains, although the relative mRNA levels of these factors did not differ significantly between the groups. Additionally, the ability of nuclear SP1 and EBF1 in AD brains to bind with the basal promoter sequence-containing DNA probe was reduced compared with the binding ability of these factors in control brains. Thus, the transcriptional downregulation of FAM3C in the AD brain is attributable to the reduced nuclear levels and genomic DNA binding of SP1 and EBF1. An expressional decline in FAM3C may be a risk factor for Aβ accumulation and eventually AD development.
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Affiliation(s)
- Naoki Watanabe
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Masaki Nakano
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Yachiyo Mitsuishi
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Norikazu Hara
- Department of Molecular Genetics, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Tatsuo Mano
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Atsushi Iwata
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan.,Department of Neuropathology, Tokyo Metropolitan Institute of Gerontology, Tokyo 173-0015, Japan
| | - Shigeo Murayama
- Department of Neuropathology, Tokyo Metropolitan Institute of Gerontology, Tokyo 173-0015, Japan
| | - Toshiharu Suzuki
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Hokkaido 060-0812, Japan
| | - Takeshi Ikeuchi
- Department of Molecular Genetics, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Masaki Nishimura
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
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6
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Zhu Y, Pu Z, Wang G, Li Y, Wang Y, Li N, Peng F. FAM3C: an emerging biomarker and potential therapeutic target for cancer. Biomark Med 2021; 15:373-384. [PMID: 33666514 DOI: 10.2217/bmm-2020-0179] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
FAM3C is a member of the FAM3 family. Recently, overexpression of FAM3C has been reported in numerous types of cancer, including breast and colon cancer. Increasing evidence suggests that elevated FAM3C and its altered subcellular localization are closely associated with tumor formation, invasion, metastasis and poor survival. Moreover, FAM3C has been found to be the regulator of various proteins that associate with cancer, including Ras, STAT3, TGF-β and LIFR. This review summarizes the current knowledge regarding FAM3C, including its structure, expression patterns, regulation, physiological roles and regulatory functions in various malignancies. These findings highlight the importance of FAM3C in cancer development and provide evidence that FAM3C is a novel biomarker and potential therapeutic target for various cancers.
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Affiliation(s)
- Yuanyuan Zhu
- Department of Blood Transfusion, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China.,NHC Key Laboratory of Cancer Proteomics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China
| | - Zhangya Pu
- Department of Infectious Diseases & Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China
| | - Guoqiang Wang
- NHC Key Laboratory of Cancer Proteomics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China
| | - Yubin Li
- NHC Key Laboratory of Cancer Proteomics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China
| | - Yinmiao Wang
- Department of Blood Transfusion, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China.,NHC Key Laboratory of Cancer Proteomics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China
| | - Ning Li
- Department of Blood Transfusion, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China
| | - Fang Peng
- Department of Blood Transfusion, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China.,NHC Key Laboratory of Cancer Proteomics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province, 410008, China
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7
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Chen Z, Ding L, Yang W, Wang J, Chen L, Chang Y, Geng B, Cui Q, Guan Y, Yang J. Hepatic Activation of the FAM3C-HSF1-CaM Pathway Attenuates Hyperglycemia of Obese Diabetic Mice. Diabetes 2017; 66:1185-1197. [PMID: 28246289 DOI: 10.2337/db16-0993] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 02/18/2017] [Indexed: 11/13/2022]
Abstract
FAM3C is a member of the family with sequence similarity 3 (FAM3) gene family, and this study determined its role and mechanism in regulation of hepatic glucose/lipid metabolism. In obese diabetic mice, FAM3C expression was reduced in the liver, and hepatic FAM3C restoration improved insulin resistance, hyperglycemia, and fatty liver. FAM3C overexpression increased the expression of heat shock factor 1 (HSF1), calmodulin (CaM), and phosphorylated protein kinase B (Akt) and reduced that of gluconeogenic and lipogenic genes in diabetic mouse livers with the suppression of gluconeogenesis and lipid deposition. In cultured hepatocytes, FAM3C overexpression upregulated HSF1 expression, which elevated CaM protein level by inducing CALM1 transcription to activate Akt in a Ca2+- and insulin-independent manner. Furthermore, FAM3C overexpression promoted nuclear exclusion of FOXO1 and repressed gluconeogenic gene expression and gluconeogenesis in a CaM-dependent manner in hepatocytes. Hepatic HSF1 overexpression activated the CaM-Akt pathway to repress gluconeogenic and lipogenic gene expression and improve hyperglycemia and fatty liver in obese diabetic mice. In conclusion, the FAM3C-HSF1-CaM-Akt pathway plays important roles in regulating glucose and lipid metabolism in hepatocytes independent of insulin and calcium. Restoring hepatic FAM3C expression is beneficial for the management of type 2 diabetes and fatty liver.
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Affiliation(s)
- Zhenzhen Chen
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China
| | - Liwei Ding
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China
| | - Weili Yang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China
| | - Junpei Wang
- Department of Biomedical Informatics, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China
| | - Liming Chen
- Department of Biophysics and Molecular Physiology, Key Laboratory of Molecular Biophysics of Ministry of Education, Huazhong University of Science & Technology School of Life Science & Technology, Wuhan, China
| | - Yongsheng Chang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bin Geng
- Hypertension Center, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qinghua Cui
- Department of Biomedical Informatics, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China
| | - Youfei Guan
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China
| | - Jichun Yang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Center for Non-coding RNA Medicine, Peking University Health Science Center, Beijing, China
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8
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Bendre A, Büki KG, Määttä JA. Fam3c modulates osteogenic differentiation by down-regulating Runx2. Differentiation 2016; 93:50-57. [PMID: 27914282 DOI: 10.1016/j.diff.2016.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 11/04/2016] [Accepted: 11/17/2016] [Indexed: 12/19/2022]
Abstract
Fam3c, a cytokine-like protein, is a member of the Fam3 family (family with sequence similarity 3) and has been implicated to play a crucial role in Epithelial-to- mesenchymal transition (EMT) and subsequent metastasis during cancer progression. A few independent genome-wide association studies on different population cohorts predicted the gene locus of Fam3c to be associated with bone mineral density and fractures. In this study, we examined the role of Fam3c during osteoblast differentiation. Fam3c was found to be expressed during osteogenic differentiation of both primary bone marrow stromal cells and MC3T3-E1 pre-osteoblasts. In differentiating osteoblasts, knockdown of Fam3c increased alkaline phosphatase expression and activity whereas overexpression of Fam3c reduced it. Furthermore, overexpression of Fam3c caused reduction of Runx2 expression at both mRNA and protein levels. Fam3c was localized in the cytoplasm and it was not secreted outside the cell during osteoblast differentiation and therefore, may function intracellularly. Furthermore, Fam3c and TGF-β1 were found to regulate each other reciprocally. Our findings therefore suggest a functional role of Fam3c in the regulation of osteoblast differentiation.
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Affiliation(s)
- Ameya Bendre
- Institute of Biomedicine, Department of Cell Biology and Anatomy, University of Turku, Turku, Finland
| | - Kalman G Büki
- Institute of Biomedicine, Department of Cell Biology and Anatomy, University of Turku, Turku, Finland
| | - Jorma A Määttä
- Institute of Biomedicine, Department of Cell Biology and Anatomy, University of Turku, Turku, Finland.
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9
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Liu L, Watanabe N, Akatsu H, Nishimura M. Neuronal expression of ILEI/FAM3C and its reduction in Alzheimer's disease. Neuroscience 2016; 330:236-46. [PMID: 27256505 DOI: 10.1016/j.neuroscience.2016.05.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 05/20/2016] [Accepted: 05/25/2016] [Indexed: 01/22/2023]
Abstract
Decrease in brain amyloid-β (Aβ) accumulation is a leading strategy for treating Alzheimer's disease (AD). However, the intrinsic mechanism of the regulation of brain Aβ production is largely unknown. Previously, we reported that ILEI (also referred to as FAM3C) binds to the γ-secretase complex and suppresses Aβ production without inhibiting γ-secretase activity. In this study, we examined ILEI expression in mouse brain using immunohistochemistry and subcellular fractionation. Brain ILEI showed widespread expression in neurons and ependymal cells but not in glial and vascular endothelial cells. Neuronal ILEI resided in perinuclear vesicular structures, which were positive for a marker protein of the trans-Golgi network. Although ILEI immunostaining was negative at synaptic terminals, synaptosome fractionation analysis suggested that ILEI was enriched in presynaptic terminals, particularly in the active zone-docked synaptic vesicles. ILEI expression levels in brain peaked during the postnatal period and declined with age. In comparison with age-matched control brains, the number of ILEI-immunoreactive neurons decreased in AD brains, although the subcellular localization was unaltered. Our results suggest that a decline of ILEI expression may cause accumulation of Aβ in the brain and the eventual development of AD.
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Affiliation(s)
- Lei Liu
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan
| | - Naoki Watanabe
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan
| | - Hiroyasu Akatsu
- Choju Medical Institute, Fukushimura Hospital, Toyohashi, Aichi 441-8124, Japan
| | - Masaki Nishimura
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan.
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10
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Fam3c modulates osteogenic cell differentiation and affects bone volume and cortical bone mineral density. BONEKEY REPORTS 2016; 5:787. [PMID: 27087939 DOI: 10.1038/bonekey.2016.14] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 01/22/2016] [Indexed: 12/24/2022]
Abstract
Fam3c, a cytokine-like growth factor, has been suggested to have a role in epithelial-to-mesenchymal transition (EMT), tumor growth and metastasis. A single-nucleotide polymorphism affecting bone mineral density has been found in the first intron of the Fam3c gene in a study analyzing an Asian population cohort. Other independent studies on different population cohorts have found the fam3c locus to be associated with bone mineral density and fractures. In order to investigate the role of Fam3c in bone biology, we have generated a Fam3c knock-out (KO) mouse strain. The Fam3c KO mice were found to have normal appearance, behavior and fertility, but small changes in bone morphology and content were also observed. Micro-CT analysis of tibiae of the female mice revealed decreased number of trabeculae. In male mice the changes in the bone phenotype were smaller, but hematological changes were observed. Furthermore, there was a negative correlation between body weight and tibial trabecular and cortical bone volume in the male KO mice. There was a small increase in cortical bone mineral density, but in the lateral direction of tibiae the breaking strength was reduced. Fam3c KO bone marrow cells showed accelerated osteogenic differentiation and mineralization in vitro. The reduced number of bone trabeculae in Fam3c KO mice and the stimulated osteogenic differentiation indicate a role for Fam3c in osteoblast differentiation and bone homeostasis.
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Yang J, Guan Y. Family with sequence similarity 3 gene family and nonalcoholic fatty liver disease. J Gastroenterol Hepatol 2013; 28 Suppl 1:105-11. [PMID: 23855304 DOI: 10.1111/jgh.12033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/20/2013] [Indexed: 01/07/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) comprises a disease spectrum ranging from simple steatosis (fatty liver) and nonalcoholic steatohepatitis to fibrosis and cirrhosis. NAFLD has become the leading cause of chronic liver diseases as well as liver-related morbidity and mortality worldwide. NAFLD is also associated with increased risk of cardiovascular diseases, hyperlipidemia, and type 2 diabetes. Insulin resistance in adipose tissues and the liver plays crucial roles in the progression of NAFLD. The family with sequence similarity 3 (FAM3) gene family is a cytokine-like gene family with four members designated FAM3A, FAM3B, FAM3C, and FAM3D, respectively. Increasing evidence suggests that the FAM3 gene family members are involved in the pathogenesis of NAFLD. In particular, FAM3B, also called pancreatic-derived factor, is an important regulator of glucose and lipid metabolism. In obesity status, increased expression and secretion of FAM3B in pancreatic islets and liver may induce lipid accumulation in the liver via the induction of hepatic insulin resistance and lipogenesis. FAM3A and FAM3D may also participate in the regulation of lipid and energy metabolism. In this brief review, we discussed the latest findings regarding the role of FAM3 gene family members, in particular FAM3B, in the pathogenesis of NAFLD.
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Affiliation(s)
- Jichun Yang
- Department of Physiology and Pathophysiology, Peking University Diabetes Center, Beijing, China
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12
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FAM3A is a target gene of peroxisome proliferator-activated receptor gamma. Biochim Biophys Acta Gen Subj 2013; 1830:4160-70. [PMID: 23562554 DOI: 10.1016/j.bbagen.2013.03.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 03/05/2013] [Accepted: 03/27/2013] [Indexed: 11/23/2022]
Abstract
BACKGROUND To date, the biological function of FAM3A, the first member of FAM3 gene family, remains unknown. We aimed to investigate whether the expression of FAM3A in liver cells is regulated by peroxisome proliferator-activated receptors (PPARs). METHODS AND RESULTS The transcriptional activity of human and mouse FAM3A gene promoters was determined by luciferase reporter assay system. PPARγ agonist rosiglitazone induced FAM3A expression in primary cultured mouse hepatocytes and human HepG2 cells. PPARγ antagonism blocked rosiglitazone-induced FAM3A expression, whereas PPARγ overexpression stimulated FAM3A expression in HepG2 cells. In contrast, PPARα agonist fenofibrate or PPARβ agonist GW0742 failed to affect FAM3A expression in HepG2 cells. The transcriptional activities of human and mouse FAM3A promoters were markedly stimulated by PPARγ activation, but not by PPARα and PPARβ activation. Chromatin immunoprecipitation (ChIP) assay revealed a direct binding of PPARγ to the putative peroxisome proliferator response element (PPRE) located at -1258/-1246 in the human FAM3A promoter. Site-directed mutagenesis of this PPRE-like motif abolished PPARγ's stimulatory effect on the transcriptional activity of human FAM3A promoter. In vivo, oral rosiglitazone treatment upregulated FAM3A expression in the livers of C57BL/6 mice and db/db mice. Moreover, upregulation of FAM3A by PPARγ activation was correlated with increased level of phosphorylated Akt (pAkt) in liver cells. CONCLUSIONS FAM3A as a novel target gene of PPARγ. Upregulation of FAM3A by PPARγ activation is correlated with increased pAkt level in liver cells. GENERAL SIGNIFICANCE Upregulation of FAM3A might contribute to PPARγ's metabolic effects in the liver.
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Johansson P, Bernström J, Gorman T, Oster L, Bäckström S, Schweikart F, Xu B, Xue Y, Schiavone LH. FAM3B PANDER and FAM3C ILEI represent a distinct class of signaling molecules with a non-cytokine-like fold. Structure 2013; 21:306-13. [PMID: 23333428 DOI: 10.1016/j.str.2012.12.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 12/13/2012] [Accepted: 12/14/2012] [Indexed: 01/06/2023]
Abstract
The FAM3 superfamily is predicted to contain classical four-helix bundle cytokines, featuring a typical up-up-down-down fold. Two members of FAM3 have been extensively studied. FAM3B PANDER has been shown to regulate glucose homeostasis and β cell function, whereas the homologous FAM3C ILEI has been shown to be involved in epithelial-mesenchymal transition and cancer. Here, we present a three-dimensional structure of a FAM3 protein, murine PANDER. Contrary to previous suggestions, PANDER exhibits a globular β-β-α fold. The structure is composed of two antiparallel β sheets lined by three short helices packing to form a highly conserved water-filled cavity. The fold shares no relation to the predicted four-helix cytokines but is conserved throughout the FAM3 superfamily. The available biological data and the unexpected new fold indicate that FAM3 PANDER and ILEI could represent a new structural class of signaling molecules, with a different mode of action compared to the traditional four-helix bundle cytokines.
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Affiliation(s)
- Patrik Johansson
- Structure and Biophysics, Discovery Sciences, AstraZeneca, Mölndal 431-83, Sweden
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Sánchez-Guardado LÓ, Ferran JL, Rodríguez-Gallardo L, Puelles L, Hidalgo-Sánchez M. Meis gene expression patterns in the developing chicken inner ear. J Comp Neurol 2011; 519:125-47. [PMID: 21120931 DOI: 10.1002/cne.22508] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We are interested in stable gene network activities operating sequentially during inner ear specification. The implementation of this patterning process is a key event in the generation of functional subdivisions of the otic vesicle during early embryonic development. The vertebrate inner ear is a complex sensory structure that is a good model system for characterization of developmental mechanisms controlling patterning and specification. Meis genes, belonging to the TALE family, encode homodomain-containing transcription factors remarkably conserved during evolution, which play a role in normal and neoplastic development. To gain understanding of the possible role of homeobox Meis genes in the developing chick inner ear, we comprehensively analyzed their spatiotemporal expression patterns from early otic specification stages onwards. In the invaginating otic placode, Meis1/2 transcripts were observed in the borders of the otic cup, being absent in the portion of otic epithelium closest to the hindbrain. As development proceeds, Meis1 and Meis2 expressions became restricted to the dorsomedial otic epithelium. Both genes were strongly expressed in the entire presumptive domain of the semicircular canals, and more weakly in all associated cristae. The endolymphatic apparatus was labeled in part by Meis1/2. Meis1 was also expressed in the lateral wall of the growing cochlear duct, while Meis2 expression was detected in a few cells of the developing acoustic-vestibular ganglion. Our results suggest a possible role of Meis assigning regional identity in the morphogenesis, patterning, and specification of the developing inner ear.
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Katahira T, Nakagiri S, Terada K, Furukawa T. Secreted factor FAM3C (ILEI) is involved in retinal laminar formation. Biochem Biophys Res Commun 2010; 392:301-6. [PMID: 20059962 DOI: 10.1016/j.bbrc.2009.12.180] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2009] [Accepted: 12/31/2009] [Indexed: 01/25/2023]
Abstract
FAM3C is a secreted factor, which is involved in the epithelial to mesenchymal transition. In transcriptome profiling of the mouse retina using microarray, we found that FAM3C is highly expressed in the retina. FAM3C is expressed in the ganglion cell layer (GCL) of the retina. To explore the function of FAM3C in retinal development, we cloned Xenopus FAM3C (XFAM3C), and performed Xenopus gain- and loss-of-function analysis. Overexpression of XFAM3C resulted in retinal laminar disorganization and an increase in eye size. Loss of function experiments of XFAM3C using antisense morpholino oligonucleotides caused photoreceptor cell dislocation. Cellular differentiation was not affected by either gain- or loss-of-function experiments of XFAM3C. These findings suggest that FAM3C is involved in retinal laminar formation processes in vertebrates.
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Affiliation(s)
- Tatsuya Katahira
- Department of Developmental Biology and JST, CREST, Osaka Bioscience Institute, Suita, Osaka 565-0874, Japan
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16
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Lee BY, Jethwaney D, Schilling B, Clemens DL, Gibson BW, Horwitz MA. The Mycobacterium bovis bacille Calmette-Guerin phagosome proteome. Mol Cell Proteomics 2010; 9:32-53. [PMID: 19815536 PMCID: PMC2808266 DOI: 10.1074/mcp.m900396-mcp200] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Indexed: 11/06/2022] Open
Abstract
Mycobacterium tuberculosis and Mycobacterium bovis bacille Calmette-Guérin (BCG) alter the maturation of their phagosomes and reside within a compartment that resists acidification and fusion with lysosomes. To define the molecular composition of this compartment, we developed a novel method for obtaining highly purified phagosomes from BCG-infected human macrophages and analyzed the phagosomes by Western immunoblotting and mass spectrometry-based proteomics. Our purification procedure revealed that BCG grown on artificial medium becomes less dense after growth in macrophages. By Western immunoblotting, LAMP-2, Niemann-Pick protein C1, and syntaxin 3 were readily detectable on the BCG phagosome but at levels that were lower than on the latex bead phagosome; flotillin-1 and the vacuolar ATPase were barely detectable on the BCG phagosome but highly enriched on the latex bead phagosome. Immunofluorescence studies confirmed the scarcity of flotillin on BCG phagosomes and demonstrated an inverse correlation between bacterial metabolic activity and flotillin on M. tuberculosis phagosomes. By mass spectrometry, 447 human host proteins were identified on BCG phagosomes, and a partially overlapping set of 289 human proteins on latex bead phagosomes was identified. Interestingly, the majority of the proteins identified consistently on BCG phagosome preparations were also identified on latex bead phagosomes, indicating a high degree of overlap in protein composition of these two compartments. It is likely that many differences in protein composition are quantitative rather than qualitative in nature. Despite the remarkable overlap in protein composition, we consistently identified a number of proteins on the BCG phagosomes that were not identified in any of our latex bead phagosome preparations, including proteins involved in membrane trafficking and signal transduction, such as Ras GTPase-activating-like protein IQGAP1, and proteins of unknown function, such as FAM3C. Our phagosome purification procedure and initial proteomics analyses set the stage for a quantitative comparative analysis of mycobacterial and latex bead phagosome proteomes.
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Affiliation(s)
- Bai-Yu Lee
- From the ‡Division of Infectious Diseases, Department of Medicine, Center for Health Sciences, University of California-Los Angeles School of Medicine, Los Angeles, California 90095-1688
| | - Deepa Jethwaney
- §Buck Institute for Age Research, Novato, California 94945, and
| | | | - Daniel L. Clemens
- From the ‡Division of Infectious Diseases, Department of Medicine, Center for Health Sciences, University of California-Los Angeles School of Medicine, Los Angeles, California 90095-1688
| | - Bradford W. Gibson
- §Buck Institute for Age Research, Novato, California 94945, and
- **Department of Pharmaceutical Chemistry, University of California, San Francisco, California 94143
| | - Marcus A. Horwitz
- From the ‡Division of Infectious Diseases, Department of Medicine, Center for Health Sciences, University of California-Los Angeles School of Medicine, Los Angeles, California 90095-1688
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Xiao F, Chen D, Lu Y, Xiao Z, Guan LF, Yuan J, Wang L, Xi ZQ, Wang XF. Proteomic analysis of cerebrospinal fluid from patients with idiopathic temporal lobe epilepsy. Brain Res 2009; 1255:180-9. [DOI: 10.1016/j.brainres.2008.12.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2008] [Revised: 12/02/2008] [Accepted: 12/02/2008] [Indexed: 11/24/2022]
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Kalathur RKR, Gagniere N, Berthommier G, Poidevin L, Raffelsberger W, Ripp R, Léveillard T, Poch O. RETINOBASE: a web database, data mining and analysis platform for gene expression data on retina. BMC Genomics 2008; 9:208. [PMID: 18457592 PMCID: PMC2386825 DOI: 10.1186/1471-2164-9-208] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2007] [Accepted: 05/05/2008] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The retina is a multi-layered sensory tissue that lines the back of the eye and acts at the interface of input light and visual perception. Its main function is to capture photons and convert them into electrical impulses that travel along the optic nerve to the brain where they are turned into images. It consists of neurons, nourishing blood vessels and different cell types, of which neural cells predominate. Defects in any of these cells can lead to a variety of retinal diseases, including age-related macular degeneration, retinitis pigmentosa, Leber congenital amaurosis and glaucoma. Recent progress in genomics and microarray technology provides extensive opportunities to examine alterations in retinal gene expression profiles during development and diseases. However, there is no specific database that deals with retinal gene expression profiling. In this context we have built RETINOBASE, a dedicated microarray database for retina. DESCRIPTION RETINOBASE is a microarray relational database, analysis and visualization system that allows simple yet powerful queries to retrieve information about gene expression in retina. It provides access to gene expression meta-data and offers significant insights into gene networks in retina, resulting in better hypothesis framing for biological problems that can subsequently be tested in the laboratory. Public and proprietary data are automatically analyzed with 3 distinct methods, RMA, dChip and MAS5, then clustered using 2 different K-means and 1 mixture models method. Thus, RETINOBASE provides a framework to compare these methods and to optimize the retinal data analysis. RETINOBASE has three different modules, "Gene Information", "Raw Data System Analysis" and "Fold change system Analysis" that are interconnected in a relational schema, allowing efficient retrieval and cross comparison of data. Currently, RETINOBASE contains datasets from 28 different microarray experiments performed in 5 different model systems: drosophila, zebrafish, rat, mouse and human. The database is supported by a platform that is designed to easily integrate new functionalities and is also frequently updated. CONCLUSION The results obtained from various biological scenarios can be visualized, compared and downloaded. The results of a case study are presented that highlight the utility of RETINOBASE. Overall, RETINOBASE provides efficient access to the global expression profiling of retinal genes from different organisms under various conditions.
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Affiliation(s)
- Ravi Kiran Reddy Kalathur
- Laboratoire de Bioiformatique et de Genomique Integratives, Institut de Génétique et de Biologie Moléculaire et Céllulaire, CNRS/INSERM/ULP, BP 163, 67404 Illkirch Cedex, France.
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Frenz CM. Deafness mutation mining using regular expression based pattern matching. BMC Med Inform Decis Mak 2007; 7:32. [PMID: 17961241 PMCID: PMC2180167 DOI: 10.1186/1472-6947-7-32] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2007] [Accepted: 10/25/2007] [Indexed: 11/16/2022] Open
Abstract
Background While keyword based queries of databases such as Pubmed are frequently of great utility, the ability to use regular expressions in place of a keyword can often improve the results output by such databases. Regular expressions can allow for the identification of element types that cannot be readily specified by a single keyword and can allow for different words with similar character sequences to be distinguished. Results A Perl based utility was developed to allow the use of regular expressions in Pubmed searches, thereby improving the accuracy of the searches. Conclusion This utility was then utilized to create a comprehensive listing of all DFN deafness mutations discussed in Pubmed records containing the keywords "human ear".
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Affiliation(s)
- Christopher M Frenz
- Department of Computer Engineering Technology, New York City College of Technology (CUNY), 300 Jay St, Brooklyn, NY 11201, USA.
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Gianazza E, Wait R, Begum S, Eberini I, Campagnoli M, Labò S, Galliano M. Mapping the 5–50-kDa fraction of human amniotic fluid proteins by 2-DE and ESI-MS. Proteomics Clin Appl 2007; 1:167-75. [DOI: 10.1002/prca.200600543] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Waerner T, Alacakaptan M, Tamir I, Oberauer R, Gal A, Brabletz T, Schreiber M, Jechlinger M, Beug H. ILEI: a cytokine essential for EMT, tumor formation, and late events in metastasis in epithelial cells. Cancer Cell 2006; 10:227-39. [PMID: 16959614 DOI: 10.1016/j.ccr.2006.07.020] [Citation(s) in RCA: 144] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2005] [Revised: 03/13/2006] [Accepted: 07/06/2006] [Indexed: 12/11/2022]
Abstract
Erk/MAPK and TGFbeta signaling cause epithelial to mesenchymal transition (EMT) and metastasis in mouse mammary epithelial cells (EpH4) transformed with oncogenic Ras (EpRas). In trials to unravel underlying mechanisms, expression profiling for EMT-specific genes identified a secreted interleukin-related protein (ILEI), upregulated exclusively at the translational level. Stable overexpression of ILEI in EpH4 and EpRas cells caused EMT, tumor growth, and metastasis, independent of TGFbeta-R signaling and enhanced by Bcl2. RNAi-mediated knockdown of ILEI in EpRas cells before and after EMT (EpRasXT) prevented and reverted TGFbeta-dependent EMT, also abrogating metastasis formation. ILEI is overexpressed and/or altered in intracellular localization in multiple human tumors, an event strongly correlated to invasion/EMT, metastasis formation, and survival in human colon and breast cancer.
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Affiliation(s)
- Thomas Waerner
- Research Institute of Molecular Pathology, Dr. Bohrgasse 7, A-1030 Vienna, Austria
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Urzúa U, Roby KF, Gangi LM, Cherry JM, Powell JI, Munroe DJ. Transcriptomic analysis of an in vitro murine model of ovarian carcinoma: functional similarity to the human disease and identification of prospective tumoral markers and targets. J Cell Physiol 2006; 206:594-602. [PMID: 16245302 DOI: 10.1002/jcp.20522] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Ovarian cancer is an aggressive disease of poor prognostic when detected at advanced stage. It is widely accepted that the ovarian surface epithelium plays a central role in disease etiology, but little is known about disease progression at the molecular level. To identify genes involved in ovarian tumorigenesis, we carried out a genome-wide transcriptomic analysis of six spontaneously transformed mouse ovarian surface epithelial (MOSE) cell lines, an in vitro model for human ovarian carcinoma. Loess normalization followed by statistical analysis with control of multiple testing resulted in 509 differentially expressed genes using an adjusted P-value < or = 0.05 as cut-off. The top 20 differentially expressed genes included 10 genes (Spp1, Cyp1b1, Btg1, Cfh, Mt1, Mt2, Igfbp5, Gstm1, Gstm2, and Esr1) implicated in various aspects of ovarian carcinomas, and other 3 genes (Gsto1, Lcn7, and Alcam) associated to breast cancer. Upon functional analysis, the majority of alterations affected genes involved in glutathione metabolism and MAPK signaling pathways. Interestingly, over 20% of the aberrantly expressed genes were related to extracellular components, suggestive of potential markers of disease progression. In addition, we identified the genes Pura, Cnn3, Arpc1b, Map4k4, Tgfb1i4, and Crsp2 correlated to in vivo tumorigenic parameters previously reported for these cells. Taken together, our findings support the utility of MOSE cells in studying ovarian cancer biology and as a source of novel diagnostic and therapeutic targets.
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Affiliation(s)
- Ulises Urzúa
- Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Universidad de Chile, Independencia, Santiago, Chile.
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