1
|
Freiin von Hövel F, Kefalakes E, Grothe C. What Can We Learn from FGF-2 Isoform-Specific Mouse Mutants? Differential Insights into FGF-2 Physiology In Vivo. Int J Mol Sci 2020; 22:ijms22010390. [PMID: 33396566 PMCID: PMC7795026 DOI: 10.3390/ijms22010390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/29/2020] [Accepted: 12/29/2020] [Indexed: 12/16/2022] Open
Abstract
Fibroblast growth factor 2 (FGF-2), ubiquitously expressed in humans and mice, is functionally involved in cell growth, migration and maturation in vitro and in vivo. Based on the same mRNA, an 18-kilo Dalton (kDa) FGF-2 isoform named FGF-2 low molecular weight (FGF-2LMW) isoform is translated in humans and rodents. Additionally, two larger isoforms weighing 21 and 22 kDa also exist, summarized as the FGF-2 high molecular weight (FGF-2HMW) isoform. Meanwhile, the human FGF-2HMW comprises a 22, 23, 24 and 34 kDa protein. Independent studies verified a specific intracellular localization, mode of action and tissue-specific spatiotemporal expression of the FGF-2 isoforms, increasing the complexity of their physiological and pathophysiological roles. In order to analyze their spectrum of effects, FGF-2LMW knock out (ko) and FGF-2HMWko mice have been generated, as well as mice specifically overexpressing either FGF-2LMW or FGF-2HMW. So far, the development and functionality of the cardiovascular system, bone formation and regeneration as well as their impact on the central nervous system including disease models of neurodegeneration, have been examined. This review provides a summary of the studies characterizing the in vivo effects modulated by the FGF-2 isoforms and, thus, offers a comprehensive overview of its actions in the aforementioned organ systems.
Collapse
Affiliation(s)
- Friederike Freiin von Hövel
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, Carl-Neuberg-Straße 1, D-30625 Hannover, Germany;
- Center for Systems Neuroscience (ZSN), University of Veterinary Medicine, Bünteweg 2, D-30559 Hannover, Germany;
| | - Ekaterini Kefalakes
- Center for Systems Neuroscience (ZSN), University of Veterinary Medicine, Bünteweg 2, D-30559 Hannover, Germany;
| | - Claudia Grothe
- Center for Systems Neuroscience (ZSN), University of Veterinary Medicine, Bünteweg 2, D-30559 Hannover, Germany;
- Correspondence: ; Tel.: +49-511-532-2897; Fax: +49-511-532-2880
| |
Collapse
|
2
|
Yu F, Cheng S, Lei J, Hang Y, Liu Q, Wang H, Yuan L. Heparin mimics and fibroblast growth factor-2 fabricated nanogold composite in promoting neural differentiation of mouse embryonic stem cells. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:1623-1647. [PMID: 32460635 DOI: 10.1080/09205063.2020.1767375] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The replacement therapy or transplantation using neural cells, which differentiated from stem cells, has emerged as a promising strategy for repairing damaged neural tissues and helping functional recovery in the treatment of neural system diseases. The challenge, however, is how to control embryonic stem cell fate so that neural differentiation can be efficiently directed to enrich a neuron cell population, and meanwhile to maintain their bioactivities. This is a key question and has a very significant impact in regenerative medicine. Here we proposed a new neural-differentiation inductive nanocomposite, containing gold nanoparticles (AuNPs), poly(2-methacrylamido glucopyranose-co-3-sulfopropyl acrylate) (PMS), and basic fibroblast growth factor (FGF2), for the high efficient directional neural-specific differentiation of mouse embryonic stem cells (mESCs). In this AuNP-PMS/FGF2 composite, PMS, playing as the high-active mimic of heparin/heparan sulfate (HS), is covalently anchored to AuNPs and bound with FGF2 on the surface of nanoparticles, forming a HS/FGF2 complex nanomimics to facilitate its binding to FGF receptor (FGFR) and promote high neural-inductive activity of mESCs. The stability, bioactivity and biocompatibility of the composite are investigated in this study. The results showed that the AuNP-PMS/FGF2 composite could maintain a long-term stability at room temperature for at least 8 days, and greatly promote the neural differentiation of mESCs. Compared with the other materials, the AuNP-PMS/FGF2 composite could significantly stimulate the expression of the specific neural differentiation markers (nestin and β3-tubulin), while obviously down-regulate the mRNA production of pluripotency marker Oct-4 in mESCs. Moreover, the promotion effect of the composite on neuronal maturation marker β3-tubulin expression achieved maximally at the low concentration of FGF2 (4 ng/mL), which suggested the high efficiency of AuNP-PMS/FGF2 composite in neural differentiation of mESCs. Meanwhile, both mESCs and L929 cells showed desirable growth during the incubation with AuNP-PMS/FGF2 composite. The AuNP-PMS/FGF2 system presents a new way to achieve HS/FGF2 complex nanomimics efficiently for the neural differentiation of mESCs.
Collapse
Affiliation(s)
- Fei Yu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, People's Republic of China
| | - Shaoyu Cheng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, People's Republic of China
| | - Jiehua Lei
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, People's Republic of China
| | - Yingjie Hang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, People's Republic of China
| | - Qi Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, People's Republic of China
| | - Hongwei Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, People's Republic of China
| | - Lin Yuan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, People's Republic of China
| |
Collapse
|
3
|
Wang K, Lai C, Li T, Wang C, Wang W, Ni B, Bai C, Zhang S, Han L, Gu H, Zhao Z, Duan Y, Yang X, Xing L, Zhao L, Zhou S, Xia M, Jiang C, Wang X, Yang P. Basic fibroblast growth factor protects against influenza A virus-induced acute lung injury by recruiting neutrophils. J Mol Cell Biol 2019; 10:573-585. [PMID: 29121325 DOI: 10.1093/jmcb/mjx047] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 11/02/2017] [Indexed: 12/18/2022] Open
Abstract
Influenza virus (IAV) infection is a major cause of severe respiratory illness that affects almost every country in the world. IAV infections result in respiratory illness and even acute lung injury and death, but the underlying mechanisms responsible for IAV pathogenesis have not yet been fully elucidated. In this study, the basic fibroblast growth factor 2 (FGF2) level was markedly increased in H1N1 virus-infected humans and mice. FGF2, which is predominately derived from epithelial cells, recruits and activates neutrophils via the FGFR2-PI3K-AKT-NFκB signaling pathway. FGF2 depletion or knockout exacerbated influenza-associated disease by impairing neutrophil recruitment and activation. More importantly, administration of the recombinant FGF2 protein significantly alleviated the severity of IAV-induced lung injury and promoted the survival of IAV-infected mice. Based on the results from experiments in which neutrophils were depleted and adoptively transferred, FGF2 protected mice against IAV infection by recruiting neutrophils. Thus, FGF2 plays a critical role in preventing IAV-induced lung injury, and FGF2 is a promising potential therapeutic target during IAV infection.
Collapse
Affiliation(s)
- Keyu Wang
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Chengcai Lai
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Tieling Li
- Chinese PLA General Hospital, Beijing, China
| | - Cheng Wang
- Chinese PLA General Hospital, Beijing, China
| | - Wei Wang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing, China
| | - Bing Ni
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Changqing Bai
- Beijing 307 Hospital of PLA Affiliated with the Chinese Academy of Medical Sciences, Beijing, China
| | | | - Lina Han
- Chinese PLA General Hospital, Beijing, China
| | - Hongjing Gu
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Zhongpeng Zhao
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yueqiang Duan
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Xiaolan Yang
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Li Xing
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Lingna Zhao
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Shanshan Zhou
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Min Xia
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Chengyu Jiang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiliang Wang
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Penghui Yang
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China.,Beijing 302 Hospital of PLA, Beijing, China
| |
Collapse
|
4
|
Pharmacological Transdifferentiation of Human Nasal Olfactory Stem Cells into Dopaminergic Neurons. Stem Cells Int 2019; 2019:2945435. [PMID: 31236114 PMCID: PMC6545791 DOI: 10.1155/2019/2945435] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 02/25/2019] [Indexed: 01/01/2023] Open
Abstract
The discovery of novel drugs for neurodegenerative diseases has been a real challenge over the last decades. The development of patient- and/or disease-specific in vitro models represents a powerful strategy for the development and validation of lead candidates in preclinical settings. The implementation of a reliable platform modeling dopaminergic neurons will be an asset in the study of dopamine-associated pathologies such as Parkinson's disease. Disease models based on cell reprogramming strategies, using either human-induced pluripotent stem cells or transcription factor-mediated transdifferentiation, are among the most investigated strategies. However, multipotent adult stem cells remain of high interest to devise direct conversion protocols and establish in vitro models that could bypass certain limitations associated with reprogramming strategies. Here, we report the development of a six-step chemically defined protocol that drives the transdifferentiation of human nasal olfactory stem cells into dopaminergic neurons. Morphological changes were progressively accompanied by modifications matching transcript and protein dopaminergic signatures such as LIM homeobox transcription factor 1 alpha (LMX1A), LMX1B, and tyrosine hydroxylase (TH) expression, within 42 days of differentiation. Phenotypic changes were confirmed by the production of dopamine from differentiated neurons. This new strategy paves the way to develop more disease-relevant models by establishing reprogramming-free patient-specific dopaminergic cell models for drug screening and/or target validation for neurodegenerative diseases.
Collapse
|
5
|
Chen D, Xin XX, Qian HC, Yu ZY, Shen LR. Evaluation of the major royal jelly proteins as an alternative to fetal bovine serum in culturing human cell lines. J Zhejiang Univ Sci B 2017; 17:476-83. [PMID: 27256681 DOI: 10.1631/jzus.b1500295] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Royal jelly (RJ) is a well-known bioactive substance. It contains large amounts of major royal jelly proteins (MRJPs), which express growth-factor-like activity in several animal and human cell lines. However, the question on whether MRJPs possess growth-factor-like activity on all types of cell cultures remains. In order to determine whether MRJPs can be used as an alternative to fetal bovine serum (FBS) in different types of human cell culture, the proliferation of the complex serum with different ratios of MRJPs/FBS (M/F) was evaluated on five cell lines: 293T, HFL-I, 231, HCT116, and Changliver using MTT (3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide) assay. The proliferation activity of the combination of the complex M/F serum with cytokines on the test cell lines was also measured. The results demonstrated that the complex serum with M/F 6/4 possessed the highest proliferation activity similar to or in excess of FBS. However, no activity of complex medium with M/F 6/4 was observed in 231 cells, indicating a selectivity of MRJPs on cell types. Compared with the complex medium with M/F 6/4, the complex medium with M/F 6/4 together with two cytokines, epidermal growth factor (EGF) and insulin-transferrin-selenium (ITS), promoted proliferations of Changliver, 293T, HCT116, and HFL-I by 18.73%‒56.19% (P<0.01). Our findings demonstrate that MRJPs could partially replace FBS in culturing many human cell lines.
Collapse
Affiliation(s)
- Di Chen
- Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Xiao-Xuan Xin
- Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Hao-Cheng Qian
- Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Zhang-Yin Yu
- Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Li-Rong Shen
- Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
| |
Collapse
|
6
|
Yanagihara K, Liu Y, Kanie K, Takayama K, Kokunugi M, Hirata M, Fukuda T, Suga M, Nikawa H, Mizuguchi H, Kato R, Furue MK. Prediction of Differentiation Tendency Toward Hepatocytes from Gene Expression in Undifferentiated Human Pluripotent Stem Cells. Stem Cells Dev 2016; 25:1884-1897. [PMID: 27733097 PMCID: PMC5165660 DOI: 10.1089/scd.2016.0099] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Functional hepatocytes derived from human pluripotent stem cells (hPSCs) have potential as tools for predicting drug-induced hepatotoxicity in the early phases of drug development. However, the propensity of hPSC lines to differentiate into specific lineages is reported to differ. The ability to predict low propensity of hPSCs to differentiate into hepatocytes would facilitate the selection of useful hPSC clones and substantially accelerate development of hPSC-derived hepatocytes for pharmaceutical research. In this study, we compared the expression of genes associated with hepatic differentiation in five hPSC lines including human ES cell line, H9, which is known to differentiate into hepatocytes, and an hPSC line reported with a poor propensity for hepatic differentiation. Genes distinguishing between undifferentiated hPSCs, hPSC-derived hepatoblast-like differentiated cells, and primary human hepatocytes were drawn by two-way cluster analysis. The order of expression levels of genes in undifferentiated hPSCs was compared with that in hPSC-derived hepatoblast-like cells. Three genes were selected as predictors of low propensity for hepatic differentiation. Expression of these genes was investigated in 23 hPSC clones. Review of representative cells by induction of hepatic differentiation suggested that low prediction scores were linked with low hepatic differentiation. Thus, our model using gene expression ranking and bioinformatic analysis could reasonably predict poor differentiation propensity of hPSC lines.
Collapse
Affiliation(s)
- Kana Yanagihara
- 1 Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation , Health and Nutrition, Osaka, Japan
| | - Yujung Liu
- 1 Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation , Health and Nutrition, Osaka, Japan
| | - Kei Kanie
- 2 Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University , Nagoya, Japan
| | - Kazuo Takayama
- 3 Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University , Osaka, Japan .,4 The Keihanshin Consortium for Fostering the Next Generation of Global Leaders in Research (K-CONNEX), Kyoto University , Kyoto, Japan .,5 Laboratory of Hepatocyte Regulation, National Institutes of Biomedical Innovation , Health and Nutrition, Osaka, Japan
| | - Minako Kokunugi
- 1 Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation , Health and Nutrition, Osaka, Japan .,6 Department of Oral Biology & Engineering Integrated Health Sciences, Institute of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
| | - Mitsuhi Hirata
- 1 Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation , Health and Nutrition, Osaka, Japan
| | - Takayuki Fukuda
- 1 Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation , Health and Nutrition, Osaka, Japan
| | - Mika Suga
- 1 Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation , Health and Nutrition, Osaka, Japan
| | - Hiroki Nikawa
- 6 Department of Oral Biology & Engineering Integrated Health Sciences, Institute of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
| | - Hiroyuki Mizuguchi
- 3 Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University , Osaka, Japan .,5 Laboratory of Hepatocyte Regulation, National Institutes of Biomedical Innovation , Health and Nutrition, Osaka, Japan .,7 Global Center for Medical Engineering and Informatics, Osaka University , Osaka, Japan
| | - Ryuji Kato
- 2 Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University , Nagoya, Japan
| | - Miho K Furue
- 1 Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation , Health and Nutrition, Osaka, Japan
| |
Collapse
|
7
|
Parametric analysis of colony morphology of non-labelled live human pluripotent stem cells for cell quality control. Sci Rep 2016; 6:34009. [PMID: 27667091 PMCID: PMC5036041 DOI: 10.1038/srep34009] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 09/06/2016] [Indexed: 11/17/2022] Open
Abstract
Given the difficulties inherent in maintaining human pluripotent stem cells (hPSCs) in a healthy state, hPSCs should be routinely characterized using several established standard criteria during expansion for research or therapeutic purposes. hPSC colony morphology is typically considered an important criterion, but it is not evaluated quantitatively. Thus, we designed an unbiased method to evaluate hPSC colony morphology. This method involves a combination of automated non-labelled live-cell imaging and the implementation of morphological colony analysis algorithms with multiple parameters. To validate the utility of the quantitative evaluation method, a parent cell line exhibiting typical embryonic stem cell (ESC)-like morphology and an aberrant hPSC subclone demonstrating unusual colony morphology were used as models. According to statistical colony classification based on morphological parameters, colonies containing readily discernible areas of differentiation constituted a major classification cluster and were distinguishable from typical ESC-like colonies; similar results were obtained via classification based on global gene expression profiles. Thus, the morphological features of hPSC colonies are closely associated with cellular characteristics. Our quantitative evaluation method provides a biological definition of ‘hPSC colony morphology’, permits the non-invasive monitoring of hPSC conditions and is particularly useful for detecting variations in hPSC heterogeneity.
Collapse
|
8
|
Kumagai A, Suga M, Yanagihara K, Itoh Y, Takemori H, Furue MK. A Simple Method for Labeling Human Embryonic Stem Cells Destined to Lose Undifferentiated Potency. Stem Cells Transl Med 2016; 5:275-81. [PMID: 26819254 DOI: 10.5966/sctm.2015-0145] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 10/23/2015] [Indexed: 12/19/2022] Open
Abstract
Mitochondrial oxidative phosphorylation is a major source of cellular ATP. Its usage as an energy source varies, not only according to the extracellular environment, but also during development and differentiation, as indicated by the reported changes in the flux ratio of glycolysis to oxidative phosphorylation during embryonic stem (ES) cell differentiation. The fluorescent probe JC-1 allows visualization of changes in the mitochondrial membrane potential produced by oxidative phosphorylation. Strong JC-1 signals were localized in the differentiated cells located at the edge of H9 ES colonies that expressed vimentin, an early differentiation maker. The JC-1 signals were further intensified when individual adjacent colonies were in contact with each other. Time-lapse analyses revealed that JC-1-labeled H9 cells under an overconfluent condition were highly differentiated after subculture, suggesting that monitoring oxidative phosphorylation in live cells might facilitate the prediction of induced pluripotent stem cells, as well as ES cells, that are destined to lose their undifferentiated potency.
Collapse
Affiliation(s)
- Ayako Kumagai
- Laboratory of Cell Signaling and Metabolic Disease, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Mika Suga
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Kana Yanagihara
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Yumi Itoh
- Laboratory of Cell Signaling and Metabolic Disease, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Hiroshi Takemori
- Laboratory of Cell Signaling and Metabolic Disease, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Miho K Furue
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| |
Collapse
|