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Ran R, Li L, Xu T, Huang J, He H, Chen Y. Revealing mitf functions and visualizing allografted tumor metastasis in colorless and immunodeficient Xenopus tropicalis. Commun Biol 2024; 7:275. [PMID: 38443437 PMCID: PMC10915148 DOI: 10.1038/s42003-024-05967-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 02/23/2024] [Indexed: 03/07/2024] Open
Abstract
Transparent immunodeficient animal models not only enhance in vivo imaging investigations of visceral organ development but also facilitate in vivo tracking of transplanted tumor cells. However, at present, transparent and immunodeficient animal models are confined to zebrafish, presenting substantial challenges for real-time, in vivo imaging studies addressing specific biological inquiries. Here, we employed a mitf-/-/prkdc-/-/il2rg-/- triple-knockout strategy to establish a colorless and immunodeficient amphibian model of Xenopus tropicalis. By disrupting the mitf gene, we observed the loss of melanophores, xanthophores, and granular glands in Xenopus tropicalis. Through the endogenous mitf promoter to drive BRAFV600E expression, we confirmed mitf expression in melanophores, xanthophores and granular glands. Moreover, the reconstruction of the disrupted site effectively reinstated melanophores, xanthophores, and granular glands, further highlighting the crucial role of mitf as a regulator in their development. By crossing mitf-/- frogs with prkdc-/-/il2rg-/- frogs, we generated a mitf-/-/prkdc-/-/il2rg-/- Xenopus tropicalis line, providing a colorless and immunodeficient amphibian model. Utilizing this model, we successfully observed intravital metastases of allotransplanted xanthophoromas and migrations of allotransplanted melanomas. Overall, colorless and immunodeficient Xenopus tropicalis holds great promise as a valuable platform for tumorous and developmental biology research.
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Affiliation(s)
- Rensen Ran
- Department of Chemical Biology, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, School of Life Sciences, Southern University of Science and Technology, 518055, Shenzhen, China.
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, 519000, Zhuhai, China.
| | - Lanxin Li
- Department of Chemical Biology, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, School of Life Sciences, Southern University of Science and Technology, 518055, Shenzhen, China
| | - Tingting Xu
- Fujian Medical University Union Hospital, 350001, Fuzhou, China
| | - Jixuan Huang
- Department of Chemical Biology, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, School of Life Sciences, Southern University of Science and Technology, 518055, Shenzhen, China
| | - Huanhuan He
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, 519000, Zhuhai, China
| | - Yonglong Chen
- Department of Chemical Biology, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, School of Life Sciences, Southern University of Science and Technology, 518055, Shenzhen, China.
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Lin TC, Lin YY, Hsu CC, Yang YP, Yang CH, Hwang DK, Wang CY, Liu YY, Lo WL, Chiou SH, Peng CH, Chen SJ, Chang YL. Nanomedicine-based Curcumin Approach Improved ROS Damage in Best Dystrophy-specific Induced Pluripotent Stem Cells. Cell Transplant 2019; 28:1345-1357. [PMID: 31313605 PMCID: PMC6802151 DOI: 10.1177/0963689719860130] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Best dystrophy (BD), also termed best vitelliform macular dystrophy (BVMD), is a
juvenile-onset form of macular degeneration and can cause central visual loss.
Unfortunately, there is no clear definite therapy for BD or improving the visual function
on this progressive disease. The human induced pluripotent stem cell (iPSC) system has
been recently applied as an effective tool for genetic consultation and chemical drug
screening. In this study, we developed patient-specific induced pluripotent stem cells
(BD-iPSCs) from BD patient-derived dental pulp stromal cells and then differentiated
BD-iPSCs into retinal pigment epithelial cells (BD-RPEs). BD-RPEs were used as an
expandable platform for in vitro candidate drug screening. Compared with unaffected
sibling-derived iPSC-derived RPE cells (Ctrl-RPEs), BD-RPEs exhibited typical RPE-specific
markers with a lower expression of the tight junction protein ZO-1 and Bestrophin-1
(BEST1), as well as reduced phagocytic capabilities. Notably, among all candidate drugs,
curcumin was the most effective for upregulating both the BEST1 and ZO-1 genes in BD-RPEs.
Using the iPSC-based drug-screening platform, we further found that curcumin can
significantly improve the mRNA expression levels of Best gene in BD-iPSC-derived RPEs.
Importantly, we demonstrated that curcumin-loaded PLGA nanoparticles (Cur-NPs) were
efficiently internalized by BD-RPEs. The Cur-NPs-based controlled release formulation
further increased the expression of ZO-1 and Bestrophin-1, and promoted the function of
phagocytosis and voltage-dependent calcium channels in BD-iPSC-derived RPEs. We further
demonstrated that Cur-NPs enhanced the expression of antioxidant enzymes with a decrease
in intracellular ROS production and hydrogen peroxide-induced oxidative stress.
Collectively, these data supported that Cur-NPs provide a potential cytoprotective effect
by regulating the anti-oxidative abilities of degenerated RPEs. In addition, the
application of patient-specific iPSCs provides an effective platform for drug screening
and personalized medicine in incurable diseases.
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Affiliation(s)
- Tai-Chi Lin
- Institute of Clinical Medicine, National Yang-Ming University, Taipei.,Department of Ophthalmology, Taipei Veterans General Hospital, Taipei
| | - Yi-Ying Lin
- Institute of Pharmacology, National Yang-Ming University, Taipei
| | - Chih-Chen Hsu
- Institute of Clinical Medicine, National Yang-Ming University, Taipei.,Department of Ophthalmology, Taipei Veterans General Hospital, Taipei
| | - Yi-Ping Yang
- Institute of Pharmacology, National Yang-Ming University, Taipei.,School of Medicine, National Yang-Ming University, Taipei.,Department of Medical Research, Taipei Veterans General Hospital, Taipei
| | - Chang-Hao Yang
- Department of Ophthalmology, National Taiwan University Hospital, Taipei
| | - De-Kuang Hwang
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei.,School of Medicine, National Yang-Ming University, Taipei
| | - Chien-Ying Wang
- School of Medicine, National Yang-Ming University, Taipei.,Department of Critical Care Medicine, Taipei Veterans General Hospital, Taipei
| | - Yung-Yang Liu
- School of Medicine, National Yang-Ming University, Taipei.,Department of Chest, Taipei Veterans General Hospital, Taipei
| | - Wen-Liang Lo
- Department of Stomatology, Taipei Veterans General Hospital & Department of Dentistry, School of Dentistry, National Yang-Ming University, Taipei
| | - Shih-Hwa Chiou
- Institute of Clinical Medicine, National Yang-Ming University, Taipei.,Institute of Pharmacology, National Yang-Ming University, Taipei.,Department of Medical Research, Taipei Veterans General Hospital, Taipei
| | - Chi-Hsien Peng
- Department of Ophthalmology, Shin Kong Wu Ho-Su Memorial Hospital & Fu-Jen Catholic University, Taipei
| | - Shih-Jen Chen
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei.,School of Medicine, National Yang-Ming University, Taipei
| | - Yuh-Lih Chang
- Institute of Pharmacology, National Yang-Ming University, Taipei.,School of Medicine, National Yang-Ming University, Taipei.,Department of Pharmacology, Taipei Veterans General Hospital, Taipei.,School of Pharmaceutical Sciences, National Yang-Ming University, Taipei
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