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Tian YG, Yue M, Nashun B, Wu SJ, Gu WW, Wang YJ. The diagnostic value of [ 18F]-FDG-PET/CT in assessment of radiation renal injury in Tibet minipigs model. J Transl Med 2018; 16:257. [PMID: 30223848 PMCID: PMC6142350 DOI: 10.1186/s12967-018-1626-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 08/31/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Radiation-induced kidney damage can severely affect renal function, and have a serious impact on glucose reabsorption. Fluoro-2-deoxyglucose positron emission tomography (FDG-PET) is routinely utilized for metabolic imaging of glucose utilization. In this study, we are trying to assess the diagnostic value of 18F-FDG-PET/CT on measuring hyperacute effect of total body irradiation (TBI) on the kidneys. METHODS Forty-eight Tibet minipigs were treated by TBI of different dosages using an 8-MV X-ray linear accelerator. Whole-body 18F-FDG-PET/CT was performed at 6, 24 and 72 h followed by histologic examination, blood samples' and renal function analysis. RESULTS The uptake of 18F-FDG was significantly different between 11/14 Gy dose groups and control group, the standard Uptake Values reached a maximal level at 72 h after 14-Gy TBI treatment. At doses over 8 Gy, histological observation showed formation of tube casts, degeneration, necrosis of tubular cells, inflammatory cell infiltration and dilatation of the mitochondria of tubule cells. Renal function analysis confirmed the changes in blood urea nitrogen and creatinine levels at various dosages and time intervals. Immunohistochemistry and western blot results indicate that the expression levels of IL-10 and TNF-α proteins were positively correlated with radiation dose up to 8 Gy. CONCLUSIONS 18F-FDG PET/CT can reflect pathological changes in kidneys and it may be a useful tool for rapid and non-invasive assessment in cases of suspected radiation-induced kidney damage.
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Affiliation(s)
- Yu-Guang Tian
- Department of Laboratory Animal Center, Southern Medical University, 1838# Guangzhou North Road, Guangzhou, 510515, Guangdong, China
| | - Min Yue
- Department of Laboratory Animal Center, Southern Medical University, 1838# Guangzhou North Road, Guangzhou, 510515, Guangdong, China
| | - Bayaer Nashun
- Department of Guangdong Medical University, Dongguan, 523808, People's Republic of China
| | - Shao-Jie Wu
- Department of Hemotology, Zhujiang Hospital, Southern Medical University, 253# Industry Road, Guangzhou, 510282, Guangdong, China
| | - Wei-Wang Gu
- Department of Laboratory Animal Center, Southern Medical University, 1838# Guangzhou North Road, Guangzhou, 510515, Guangdong, China.
| | - Yu-Jue Wang
- Department of Laboratory Animal Center, Southern Medical University, 1838# Guangzhou North Road, Guangzhou, 510515, Guangdong, China.
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Liu YM, Liu W, Jia JS, Chen BZ, Chen HW, Liu Y, Bie YN, Gu P, Sun Y, Xiao D, Gu WW. Abnormalities of hair structure and skin histology derived from CRISPR/Cas9-based knockout of phospholipase C-delta 1 in mice. J Transl Med 2018; 16:141. [PMID: 29793503 PMCID: PMC5968471 DOI: 10.1186/s12967-018-1512-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/08/2018] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Hairless mice have been widely applied in skin-related researches, while hairless pigs will be an ideal model for skin-related study and other biomedical researches because of the similarity of skin structure with humans. The previous study revealed that hairlessness phenotype in nude mice is caused by insufficient expression of phospholipase C-delta 1 (PLCD1), an essential molecule downstream of Foxn1, which encouraged us to generate PLCD1-deficient pigs. In this study, we plan to firstly produce PLCD1 knockout (KO) mice by CRISPR/Cas9 technology, which will lay a solid foundation for the generation of hairless PLCD1 KO pigs. METHODS Generation of PLCD1 sgRNAs and Cas 9 mRNA was performed as described (Shao in Nat Protoc 9:2493-2512, 2014). PLCD1-modified mice (F0) were generated via co-microinjection of PLCD1-sgRNA and Cas9 mRNA into the cytoplasm of C57BL/6J zygotes. Homozygous PLCD1-deficient mice (F1) were obtained by intercrossing of F0 mice with the similar mutation. RESULTS PLCD1-modified mice (F0) showed progressive hair loss after birth and the genotype of CRISPR/Cas9-induced mutations in exon 2 of PLCD1 locus, suggesting the sgRNA is effective to cause mutations that lead to hair growth defect. Homozygous PLCD1-deficient mice (F1) displayed baldness in abdomen and hair sparse in dorsa. Histological abnormalities of the reduced number of hair follicles, irregularly arranged and curved hair follicles, epidermal hyperplasia and disturbed differentiation of epidermis were observed in the PLCD1-deficient mice. Moreover, the expression level of PLCD1 was significantly decreased, while the expression levels of other genes (i.e., Krt1, Krt5, Krt13, loricrin and involucrin) involved in the differentiation of hair follicle were remarkerably increased in skin tissues of PLCD1-deficient mice. CONCLUSIONS In conclusion, we achieve PLCD1 KO mice by CRISPR/Cas9 technology, which provide a new animal model for hair development research, although homozygotes don't display completely hairless phenotype as expected.
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Affiliation(s)
- Yu-Min Liu
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, 510515 China
- Songshan Lake Pearl Laboratory Animal Sci. & Tech. Co., Ltd., Dongguan, 523808 China
| | - Wei Liu
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, 510515 China
- Songshan Lake Pearl Laboratory Animal Sci. & Tech. Co., Ltd., Dongguan, 523808 China
- Jing Brand Co., Ltd., Daye, 435100 Hubei China
| | - Jun-Shuang Jia
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou, 510515 China
| | - Bang-Zhu Chen
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, 510515 China
- Songshan Lake Pearl Laboratory Animal Sci. & Tech. Co., Ltd., Dongguan, 523808 China
| | - Heng-Wei Chen
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, 510515 China
| | - Yu Liu
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, 510515 China
| | - Ya-Nan Bie
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, 510515 China
| | - Peng Gu
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, 510515 China
- Songshan Lake Pearl Laboratory Animal Sci. & Tech. Co., Ltd., Dongguan, 523808 China
| | - Yan Sun
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - Dong Xiao
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, 510515 China
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou, 510515 China
| | - Wei-Wang Gu
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, 510515 China
- Songshan Lake Pearl Laboratory Animal Sci. & Tech. Co., Ltd., Dongguan, 523808 China
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Tian YG, Yue M, Gu Y, Gu WW, Wang YJ. Single-nucleotide polymorphism analysis of GH, GHR, and IGF-1 genes in minipigs. ACTA ACUST UNITED AC 2014; 47:753-8. [PMID: 25098617 PMCID: PMC4143202 DOI: 10.1590/1414-431x20143945] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 05/12/2014] [Indexed: 11/22/2022]
Abstract
Tibetan (TB) and Bama (BM) miniature pigs are two popular pig breeds that are used as experimental animals in China due to their small body size. Here, we analyzed single-nucleotide polymorphisms (SNPs) in gene fragments that are closely related to growth traits [growth hormone (GH), growth hormone receptor (GHR), and insulin-like growth factor (IGF)-1)] in these pig breeds and a large white (LW) control pig breed. On the basis of the analysis of 100 BMs, 108 TBs, and 50 LWs, the polymorphic distribution levels of GH, GHR, and IGF-1 were significantly different among these three pig breeds. According to correlation analyses between SNPs and five growth traits--body weight (BW), body length (BL), withers height (WH), chest circumference (CC), and abdomen circumference (AC)--three SNP loci in BMs and four SNP loci in TBs significantly affected growth traits. Three SNP sites in BMs and four SNP sites in TBs significantly affected growth traits. SNPs located in the GH gene fragment significantly affected BL and CC at locus 12 and BL at locus 45 in BMs, and also BW, WH, CC, and AC at locus 45 and WH and CC at locus 93 in TBs. One SNP at locus 85 in the BM GHR gene fragment significantly affected all growth traits. All indices were significantly reduced with a mixture of alleles at locus 85. These results provide more information regarding the genetic background of these minipig species and indicate useful selection markers for pig breeding programs.
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Affiliation(s)
- Y G Tian
- Laboratory Animal Center, Southern Medical University, Guangzhou, Guangdong, China
| | - M Yue
- Laboratory Animal Center, Southern Medical University, Guangzhou, Guangdong, China
| | - Y Gu
- Laboratory Animal Center, Southern Medical University, Guangzhou, Guangdong, China
| | - W W Gu
- Laboratory Animal Center, Southern Medical University, Guangzhou, Guangdong, China
| | - Y J Wang
- Laboratory Animal Center, Southern Medical University, Guangzhou, Guangdong, China
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Wang YJ, Liu W, Chen C, Yan LM, Song J, Guo KY, Wang G, Wu QH, Gu WW. Irradiation induced injury reduces energy metabolism in small intestine of Tibet minipigs. PLoS One 2013; 8:e58970. [PMID: 23527059 PMCID: PMC3602586 DOI: 10.1371/journal.pone.0058970] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Accepted: 02/08/2013] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND The radiation-induced energy metabolism dysfunction related to injury and radiation doses is largely elusive. The purpose of this study is to investigate the early response of energy metabolism in small intestinal tissue and its correlation with pathologic lesion after total body X-ray irradiation (TBI) in Tibet minipigs. METHODS AND RESULTS 30 Tibet minipigs were assigned into 6 groups including 5 experimental groups and one control group with 6 animals each group. The minipigs in these experimental groups were subjected to a TBI of 2, 5, 8, 11, and 14 Gy, respectively. Small intestine tissues were collected at 24 h following X-ray exposure and analyzed by histology and high performance liquid chromatography (HPLC). DNA contents in this tissue were also examined. Irradiation causes pathologic lesions and mitochondrial abnormalities. The Deoxyribonucleic acid (DNA) content-corrected and uncorrected adenosine-triphosphate (ATP) and total adenine nucleotides (TAN) were significantly reduced in a dose-dependent manner by 2-8 Gy exposure, and no further reduction was observed over 8 Gy. CONCLUSION TBI induced injury is highly dependent on the irradiation dosage in small intestine and inversely correlates with the energy metabolism, with its reduction potentially indicating the severity of injury.
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Affiliation(s)
- Yu-Jue Wang
- Department of Laboratory Animal Center, Southern Medical University, Guangzhou, Guangdong, China
- Pearl Laboratory Animal Sci. & Tech. Co. Ltd., Dongguan, China
| | - Wen Liu
- Department of Laboratory Animal Center, Southern Medical University, Guangzhou, Guangdong, China
| | - Chi Chen
- Department of Hematology, The People’s Hospital of Guizhou Province, Guiyang, Guizhou, China
| | - Li-Meng Yan
- Department of Ophthalmology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jun Song
- Department of Hematology, The People’s Hospital of Guizhou Province, Guiyang, Guizhou, China
| | - Kun-Yuan Guo
- Department of Hematology, Zhujiang Hospital, The Southern Medical University, Guangzhou, Guangdong, China
- * E-mail: (KYG); (WWG)
| | - Gang Wang
- Department of Oncology, Affiliated Oncology Hospital of Medical College of Guiyang, Guiyang, Guizhou, China
| | - Qing-Hong Wu
- Department of Laboratory Animal Center, Southern Medical University, Guangzhou, Guangdong, China
| | - Wei-Wang Gu
- Department of Laboratory Animal Center, Southern Medical University, Guangzhou, Guangdong, China
- * E-mail: (KYG); (WWG)
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