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Kawamura Y, Komoto S, Fukuda S, Kugita M, Tang S, Patel A, Pieknik JR, Nagao S, Taniguchi K, Krause PR, Yoshikawa T. Development of recombinant rotavirus carrying herpes simplex virus 2 glycoprotein D gene based on reverse genetics technology. Microbiol Immunol 2024; 68:56-64. [PMID: 38098134 DOI: 10.1111/1348-0421.13107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/23/2023] [Accepted: 11/30/2023] [Indexed: 02/07/2024]
Abstract
Vaccine development for herpes simplex virus 2 (HSV-2) has been attempted, but no vaccines are yet available. A plasmid-based reverse genetics system for Rotavirus (RV), which can cause gastroenteritis, allows the generation of recombinant RV containing foreign genes. In this study, we sought to develop simian RV (SA11) as a vector to express HSV-2 glycoprotein D (gD2) and evaluated its immunogenicity in mice. We generated the recombinant SA11-gD2 virus (rSA11-gD2) and confirmed its ability to express gD2 in vitro. The virus was orally inoculated into suckling BALB/c mice and into 8-week-old mice. Serum IgG and IgA titers against RV and gD2 were measured by ELISA. In the 8-week-old mice inoculated with rSA11-gD2, significant increases in not only antibodies against RV but also IgG against gD2 were demonstrated. In the suckling mice, antibodies against RV were induced, but gD2 antibody was not detected. Diarrhea observed after the first inoculation of rSA11-gD2 in suckling mice was similar to that induced by the parent virus. A gD2 expressing simian RV recombinant, which was orally inoculated, induced IgG against gD2. This strategy holds possibility for genital herpes vaccine development.
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Affiliation(s)
- Yoshiki Kawamura
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
- Department of Pediatrics, Fujita Health University Okazaki Medical Center, Okazaki, Aichi, Japan
| | - Satoshi Komoto
- Department of Virology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
- Center for Infectious Disease Research, Research Promotion Headquarters, Fujita Health University, Toyoake, Aichi, Japan
- Division of One Health, Research Center for GLOBAL and LOCAL Infectious Diseases (RCGLID), Oita University, Yufu, Oita, Japan
| | - Saori Fukuda
- Department of Virology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Masanori Kugita
- Advanced Medical Research Center for Animal Models of Human Disease, Fujita Health University, Toyoake, Aichi, Japan
| | - Shuang Tang
- Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Amita Patel
- Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Julianna R Pieknik
- Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Shizuko Nagao
- Advanced Medical Research Center for Animal Models of Human Disease, Fujita Health University, Toyoake, Aichi, Japan
| | - Koki Taniguchi
- Department of Virology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Philip R Krause
- Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
- Independent Consultant, Bethesda, Maryland, USA
| | - Tetsushi Yoshikawa
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
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Watanabe H, Xu W, Uno H, Uraya Y, Kugita M, Komohara Y, Niidome T, Sasaki M, Shimizu I, Fujita N, Kawano Y. Fluoride-treated rare earth-free magnesium alloy ZK30: An inert and bioresorbable material for bone fracture treatment devices. J Biomed Mater Res A 2024. [PMID: 38235956 DOI: 10.1002/jbm.a.37673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/03/2024] [Accepted: 01/08/2024] [Indexed: 01/19/2024]
Abstract
Bone fractures represent a common health problem, particularly in an increasingly aging population. Bioresorbable magnesium (Mg) alloy-based implants offer promising alternatives to traditional metallic implants for the treatment of bone fractures because they eliminate the need for implant removal after healing. The Mg-Y-rare-earth (RE)-Zr alloy WE43, designed for orthopedic implants, has received European Conformity mark approval. However, currently, WE43 is not clinically used in certain countries possibly because of concerns related to RE metals. In this study, we investigated the use of a RE-free alloy, namely, Mg-Zn-Zr alloy (ZK30), as an implant for bone fractures. Hydrofluoric acid (HF) treatment was performed to improve the corrosion resistance of ZK30. HF-treated ZK30 (HF-ZK30) exhibited lower corrosion rate and higher biocompatibility than those of WE43 in in vitro experiments. After implanting a rod of HF-ZK30 into the fractured femoral bones of mice, HF-ZK30 held the bones and healed the fracture without deformation. Treatment results of HF-ZK30 were comparable to those of WE43, indicating the potential of HF-ZK30 as a bioresorbable and safe implant for bone repair.
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Affiliation(s)
- Hirotaka Watanabe
- Department of Orthopaedic Surgery, Fujita Health University, Toyoake, Aichi, Japan
| | - Wei Xu
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Haruka Uno
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Yuki Uraya
- Department of Orthopaedic Surgery, Fujita Health University, Toyoake, Aichi, Japan
| | - Masanori Kugita
- Advanced Medical Research Center for Animal Models of Human Diseases, Research Promotion Headquarters, Fujita Health University, Toyoake, Aichi, Japan
| | - Yoshihiro Komohara
- Department of Cell Pathology, Graduate School of Medical Science, Kumamoto University, Kumamoto, Japan
| | - Takuro Niidome
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Makoto Sasaki
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Ichiro Shimizu
- Department of Mechanical Engineering, Okayama University of Science, Okayama, Japan
| | - Nobuyuki Fujita
- Department of Orthopaedic Surgery, Fujita Health University, Toyoake, Aichi, Japan
| | - Yusuke Kawano
- Department of Orthopaedic Surgery, Fujita Health University, Toyoake, Aichi, Japan
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Kubota H, Kunisawa K, Wulaer B, Hasegawa M, Kurahashi H, Sakata T, Tezuka H, Kugita M, Nagao S, Nagai T, Furuyashiki T, Narumiya S, Saito K, Nabeshima T, Mouri A. High salt induces cognitive impairment via the interaction of the angiotensin II-AT 1 and prostaglandin E2-EP 1 systems. Br J Pharmacol 2023; 180:2393-2411. [PMID: 37076133 DOI: 10.1111/bph.16093] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/05/2023] [Accepted: 04/13/2023] [Indexed: 04/21/2023] Open
Abstract
BACKGROUND AND PURPOSE High salt (HS) intake has been associated with hypertension and cognitive impairment. It is well known that the angiotensin II (Ang II)-AT1 receptor and prostaglandin E2 (PGE2)-EP1 receptor systems are involved in hypertension and neurotoxicity. However, the involvement of these systems in HS-mediated hypertension and emotional and cognitive impairments remains unclear. EXPERIMENTAL APPROACH Mice were loaded with HS solution (2% NaCl drinking water) for 12 weeks, and blood pressure was monitored. Subsequently, effects of HS intake on emotional and cognitive function and tau phosphorylation in the prefrontal cortex (PFC) and hippocampus (HIP) were investigated. The involvement of Ang II-AT1 and PGE2-EP1 systems in HS-induced hypertension and neuronal and behavioural impairments was examined by treatment with losartan, an AT1 receptor blocker (ARB), or EP1 gene knockout. KEY RESULTS We demonstrate that hypertension and impaired social behaviour and object recognition memory following HS intake may be associated with tau hyperphosphorylation, decreased phosphorylation of Ca2+ /calmodulin-dependent protein kinase II (CaMKII), and postsynaptic density protein 95 (PSD95) expression in the PFC and HIP of mice. These changes were blocked by pharmacological treatment with losartan or EP1 receptor gene knockout. CONCLUSIONS AND IMPLICATIONS Our findings suggest that the interaction of Ang II-AT1 receptor and PGE2-EP1 receptor systems could be novel therapeutic targets for hypertension-induced cognitive impairment.
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Affiliation(s)
- Hisayoshi Kubota
- Department of Regulatory Science for Evaluation & Development of Pharmaceuticals & Devices, Fujita Health University Graduate School of Health Science, Toyoake, Aichi, Japan
| | - Kazuo Kunisawa
- Department of Regulatory Science for Evaluation & Development of Pharmaceuticals & Devices, Fujita Health University Graduate School of Health Science, Toyoake, Aichi, Japan
| | - Bolati Wulaer
- Laboratory of Health and Medical Science Innovation (HMSI), Fujita Health University Graduate School of Health Science, Toyoake, Aichi, Japan
| | - Masaya Hasegawa
- Department of Regulatory Science for Evaluation & Development of Pharmaceuticals & Devices, Fujita Health University Graduate School of Health Science, Toyoake, Aichi, Japan
| | - Hitomi Kurahashi
- Department of Regulatory Science for Evaluation & Development of Pharmaceuticals & Devices, Fujita Health University Graduate School of Health Science, Toyoake, Aichi, Japan
| | - Takatoshi Sakata
- Department of Regulatory Science for Evaluation & Development of Pharmaceuticals & Devices, Fujita Health University Graduate School of Health Science, Toyoake, Aichi, Japan
| | - Hiroyuki Tezuka
- Department of Cellular Function Analysis, Research Promotion and Support Headquarters, Fujita Health University, Toyoake, Aichi, Japan
| | - Masanori Kugita
- Education and Research Facility of Animal Models for Human Diseases, Center for Research Promotion and Support, Fujita Health University, Toyoake, Aichi, Japan
| | - Shizuko Nagao
- Education and Research Facility of Animal Models for Human Diseases, Center for Research Promotion and Support, Fujita Health University, Toyoake, Aichi, Japan
| | - Taku Nagai
- Division of Behavioral Neuropharmacology International Center for Brain Science (ICBS), Fujita Health University, Toyoake, Aichi, Japan
| | - Tomoyuki Furuyashiki
- Division of Pharmacology, Graduate School of Medicine, Kobe University, Kobe, Hyogo, Japan
| | - Shuh Narumiya
- Department of Drug Discovery Medicine, Kyoto University Graduate School of Medicine, Kyoto, Kyoto, Japan
| | - Kuniaki Saito
- Laboratory of Health and Medical Science Innovation (HMSI), Fujita Health University Graduate School of Health Science, Toyoake, Aichi, Japan
- Department of Disease Control and Prevention, Fujita Health University Graduate School of Health Science, Toyoake, Aichi, Japan
- Japanese Drug Organization of Appropriate Use and Research, Nagoya, Aichi, Japan
| | - Toshitaka Nabeshima
- Laboratory of Health and Medical Science Innovation (HMSI), Fujita Health University Graduate School of Health Science, Toyoake, Aichi, Japan
- Japanese Drug Organization of Appropriate Use and Research, Nagoya, Aichi, Japan
| | - Akihiro Mouri
- Department of Regulatory Science for Evaluation & Development of Pharmaceuticals & Devices, Fujita Health University Graduate School of Health Science, Toyoake, Aichi, Japan
- Japanese Drug Organization of Appropriate Use and Research, Nagoya, Aichi, Japan
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Kawamura Y, Komoto S, Fukuda S, Kugita M, Tang S, Pieknik J, Enya Y, Ihira M, Nagao S, Krause P, Taniguchi K, Yoshikawa T. 2136. Development of Recombinant Rotavirus Vaccine Carrying Herpes Simplex Virus 2 Gene Based on Reverse Genetics Technology. Open Forum Infect Dis 2022. [DOI: 10.1093/ofid/ofac492.1756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Abstract
Background
Herpes simplex virus type 2 (HSV-2) can cause genital herpes, which reduces the patient's QOL associated with pain. In addition, genital herpes can increase the risk of human immunodeficiency virus infection. Vaccine development has been attempted for many years, but it has not yet been put into practical use. Meanwhile, rotavirus (RV) is one of the major viral causes of severe gastroenteritis in infants and young children worldwide. Currently, two live attenuated vaccines are widely used to prevent severe RV infection in children. We have developed entirely plasmid-based reverse genetics systems of RV, which allowed the generation of recombinant reassortant RV containing a foreign gene.
In this study, we sought to develop simian RV (SA11), in which HSV-2 glycoprotein D (gD2) gene was inserted by reverse genetics system, as a herpes vaccine, and evaluated its immunogenicity in mice.
Construction of HSV-2 protein expressing rotavirus as a vaccine inducing mucosal immunity
Methods
Artificially synthesized gD2 DNA fragment was inserted into T7 expression NSP1 plasmids (pT7/NSP1-gD2). Using the plasmid, recombinant SA11-gD2 virus (rSA11-gD2) was generated. gD2 protein expression in infected MA104 cells was verified by Western blotting. rSA11-gD2 was orally inoculated into BALB/c suckling mice twice two weeks apart and into eight-week-old mice three times apart four weeks. Diarrhea score was evaluated for seven days after first inoculation in suckling mice. Serum IgG and IgA titers against RV and gD2 were measured by ELISA.
Results
Insertion of the gD2 gene and synthesis of gD2 protein were demonstrated by sequence analysis and Wester blotting analysis, respectively. Diarrhea occurred after the first inoculation of rSA11-gD2 in suckling mice. Although IgG and IgA antibodies against RV were induced, gD2 antibody was not detected in convalescent sera in the suckling mice. Meanwhile, in the eight-week-old mice inoculated with three times of rSA11-gD2, significant increases in not only IgG and IgA against RV but also IgG against gD2 were demonstrated.
Conclusion
Simian RV containing gD2 gene, which was developed by the reverse genetics, induced IgG antibody against gD2 in orally inoculated mice. This strategy can be used to develop genital herpes vaccine.
Disclosures
All Authors: No reported disclosures.
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Affiliation(s)
- Yoshiki Kawamura
- Fujita Health University Okazaki Medical Center , Okazaki, Aichi , Japan
| | - Satoshi Komoto
- Fujita Health University School of Medicine , Toyoake, Aichi , Japan
| | - Saori Fukuda
- Fujita Health University School of Medicine , Toyoake, Aichi , Japan
| | - Masanori Kugita
- Fujita Health University School of Medicine , Toyoake, Aichi , Japan
| | - Shuang Tang
- Food and drug administration , Silver Spring, Maryland
| | | | - Yasuko Enya
- Fujita Health University , Toyoake, Aichi , Japan
| | - Masaru Ihira
- Fujita Health University School of Medical Sciences , Toyoake, Aichi , Japan
| | - Shizuko Nagao
- Fujita Health University School of Medicine , Toyoake, Aichi , Japan
| | | | - Koki Taniguchi
- Fujita Health University School of Medicine , Toyoake, Aichi , Japan
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Fukuda S, Kugita M, Higashimoto Y, Shiogama K, Tsujikawa H, Moriguchi K, Ito N, Sugiyama M, Nagao S, Murata T, Taniguchi K, Komoto S. Rotavirus incapable of NSP6 expression can cause diarrhea in suckling mice. J Gen Virol 2022; 103. [PMID: 35639587 DOI: 10.1099/jgv.0.001745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The group A rotavirus (RVA) genome comprising 11 double-stranded RNAs encodes six structural proteins (VP1-VP4, VP6, and VP7) and six non-structural proteins (NSP1-NSP6). Among these 12 rotaviral proteins, NSP6 has been less studied as to its function. We previously prepared a recombinant NSP6-deficient RVA derived from simian strain SA11-L2 by reverse genetics, and found that the NSP6-deficient virus grew well in cell culture, although its growth was less abundant than that of the parental SA11-L2 strain. In this study, we examined the potency of a recombinant RVA incapable of NSP6 expression to cause diarrhoea in suckling mice. The suckling mice infected with the NSP6-deficient virus apparently experienced diarrhoea, although the symptom was milder and the duration of diarrhoea was shorter than in the mice infected with the authentic SA11-L2 strain. Thus, together with the results obtained for cultured cells in the previous study, it can be concluded that NSP6 is not necessarily required for replication and pathogenicity in vitro and in vivo.
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Affiliation(s)
- Saori Fukuda
- Department of Virology and Parasitology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Masanori Kugita
- Education and Research Facility of Animal Models for Human Diseases, Fujita Health University, Toyoake, Aichi 470-1192, Japan
| | - Yuki Higashimoto
- Division of Morphology and Diagnostic Pathology, Faculty of Medical Technology, Fujita Health University School of Health Sciences, Toyoake, Aichi 470-1192, Japan
| | - Kazuya Shiogama
- Division of Morphology and Diagnostic Pathology, Faculty of Medical Technology, Fujita Health University School of Health Sciences, Toyoake, Aichi 470-1192, Japan
| | - Hanako Tsujikawa
- Division of Pathology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Kyoko Moriguchi
- Department of Virology and Parasitology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Naoto Ito
- The United Graduate School of Veterinary Sciences, Gifu University, Gifu 501-1193, Japan.,Laboratory of Zoonotic Diseases, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan
| | - Makoto Sugiyama
- The United Graduate School of Veterinary Sciences, Gifu University, Gifu 501-1193, Japan.,Laboratory of Zoonotic Diseases, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan
| | - Shizuko Nagao
- Education and Research Facility of Animal Models for Human Diseases, Fujita Health University, Toyoake, Aichi 470-1192, Japan
| | - Takayuki Murata
- Department of Virology and Parasitology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Koki Taniguchi
- Department of Virology and Parasitology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Satoshi Komoto
- Department of Virology and Parasitology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
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Yoshimura A, Yamaguchi T, Kugita M, Kumamoto K, Shiogama K, Ogitsu N, Yoneda M, Miura T, Nagamura Y, Nagao S. High Levels of Dietary Lard or Sucrose May Aggravate Lysosomal Renal Injury in Non-Obese, Streptozotocin-Injected CD-1 Mice Provided Isocaloric Diets. J Nutr Sci Vitaminol (Tokyo) 2021; 67:243-248. [PMID: 34470999 DOI: 10.3177/jnsv.67.243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Daily fat and sugar intake has increased in Japan, while total energy intake has decreased. However, the number of type 2 diabetes mellitus patients has increased, and this often causes renal injury characterized by autophagic vacuoles. Although many studies with comparisons of high fat or sugar versus a normal macronutrient balanced diet have been reported, there are few studies that equalized calorie intake and body weights. In the current study, AIN93M diets (CONT group) with matching energy content with lard derived high saturated fat (LARD group), soybean oil derived unsaturated fat (SOY OIL group) and sucrose (SUCROSE group) were provided to compare their effects on renal morphology in streptozotocin-injected CD-1 mice without causing obesity. The number of renal tubular vacuoles was higher in SUCROSE and slightly higher in LARD compared with CONT mice, and was higher in LARD and SUCROSE compared with SOY OIL mice. Most of those vacuoles were LAMP1-positive, a marker of lysosomal autophagy. These results suggest that despite identical energy contents, diets with high sucrose or saturated fat compared to unsaturated fat may aggravate lysosomal renal injury in a non-obese, streptozotocin-induced model of diabetes mellitus.
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Affiliation(s)
- Aya Yoshimura
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University
| | - Tamio Yamaguchi
- Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science
| | - Masanori Kugita
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University
| | - Kanako Kumamoto
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University
| | - Kazuya Shiogama
- Division of Morphology and Cell Function, Faculty of Medical Technology, School of Health Sciences, Fujita Health University
| | - Naomichi Ogitsu
- Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science
| | - Misao Yoneda
- Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science
| | - Toshihiro Miura
- Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science
| | - Yoichi Nagamura
- Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science
| | - Shizuko Nagao
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University
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Nagao S, Kumamoto K, Kugita M, Yoshimura A, Murakami R, Fujigaki H, Yamamoto Y, Maeda Y, Yamaguchi T, Takahashi K, Saito K, Yuzawa Y. POS-431 ALTERED REGULATION OF TRYPTOPHAN METABOLISM AND ARYL HYDROCARBON RECEPTOR DISTRIBUTION IN RODENT POLYCYSTIC KIDNEYS. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Yoshihara D, Kugita M, Sasaki M, Horie S, Nakanishi K, Abe T, Aukema HM, Yamaguchi T, Nagao S. Telmisartan ameliorates fibrocystic liver disease in an orthologous rat model of human autosomal recessive polycystic kidney disease. PLoS One 2013; 8:e81480. [PMID: 24324698 PMCID: PMC3855683 DOI: 10.1371/journal.pone.0081480] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 10/19/2013] [Indexed: 01/13/2023] Open
Abstract
Human autosomal recessive polycystic kidney disease (ARPKD) produces kidneys which are massively enlarged due to multiple cysts, hypertension, and congenital hepatic fibrosis characterized by dilated bile ducts and portal hypertension. The PCK rat is an orthologous model of human ARPKD with numerous fluid-filled cysts caused by stimulated cellular proliferation in the renal tubules and hepatic bile duct epithelia, with interstitial fibrosis developed in the liver. We previously reported that a peroxisome proliferator activated receptor (PPAR)-γ full agonist ameliorated kidney and liver disease in PCK rats. Telmisartan is an angiotensin receptor blocker (ARB) used widely as an antihypertensive drug and shows partial PPAR-γ agonist activity. It also has nephroprotective activity in diabetes and renal injury and prevents the effects of drug-induced hepatotoxicity and hepatic fibrosis. In the present study, we determined whether telmisartan ameliorates progression of polycystic kidney and fibrocystic liver disease in PCK rats. Five male and 5 female PCK and normal control (+/+) rats were orally administered 3 mg/kg telmisartan or vehicle every day from 4 to 20 weeks of age. Treatment with telmisartan decreased blood pressure in both PCK and +/+ rats. Blood levels of aspartate amino transferase, alanine amino transferase and urea nitrogen were unaffected by telmisartan treatment. There was no effect on kidney disease progression, but liver weight relative to body weight, liver cystic area, hepatic fibrosis index, expression levels of Ki67 and TGF-β, and the number of Ki67- and TGF-β-positive interstitial cells in the liver were significantly decreased in telmisartan-treated PCK rats. Therefore, telmisartan ameliorates congenital hepatic fibrosis in ARPKD, possibly through the inhibition of signaling cascades responsible for cellular proliferation and interstitial fibrosis in PCK rats. The present results support the potential therapeutic use of ARBs for the treatment of fibrocystic liver disease in ARPKD patients.
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Affiliation(s)
- Daisuke Yoshihara
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University, Toyoake, Aichi, Japan
| | - Masanori Kugita
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University, Toyoake, Aichi, Japan
| | - Mai Sasaki
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University, Toyoake, Aichi, Japan
| | - Shigeo Horie
- Department of Urology, Juntendo University, Graduate School of Medicine, Bunkyou, Tokyo, Japan
| | - Koichi Nakanishi
- Department of Pediatrics, Wakayama Medical University, Wakayama City, Wakayama, Japan
| | - Takaaki Abe
- Division of Medical Science, Tohoku University Graduate School of Biomedical Engineering, Sendai, Miyagi, Japan
| | - Harold M. Aukema
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Tamio Yamaguchi
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Shizuko Nagao
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University, Toyoake, Aichi, Japan
- * E-mail:
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Abstract
Polycystic kidney disease (PKD) is a hereditary disorder with abnormal cellular proliferation, fluid accumulation in numerous cysts, remodeling of extracellular matrix, inflammation, and fibrosis in the kidney and liver. The two major types of PKD show autosomal dominant (ADPKD) or autosomal recessive inheritance (ARPKD). ADPKD is one of the most common genetic diseases, with an incidence of 1:500-1,000. Approximately 50% of patients with ADPKD develop end-stage renal disease (ESRD) by the age of 60. On the other hand, ARPKD is relatively rare, with an incidence of approximately 1:20,000-40,000. ARPKD is diagnosed early in life, often prenatally. The gene products responsible for ADPKD and ARPKD distribute in primary cilia and are thought to control intercellular Ca(2+). Two types of animal model of PKD have been established: spontaneous hereditary models identified by the typical manifestations of PKD and gene-engineered models established by modification of human orthologous genes. Both types of animal models are used to study the mechanism of cystogenesis and efficacy of medical treatments. In PKD progression, critical roles of signaling pathways including MAPK, mTOR, and PPAR-γ have been discovered with these models. Therefore, experimental animal models are indispensable for investigating molecular mechanisms of PKD onset and progression as well as potential therapeutic treatments.
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Affiliation(s)
- Shizuko Nagao
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
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10
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Kugita M, Nishii K, Morita M, Yoshihara D, Kowa-Sugiyama H, Yamada K, Yamaguchi T, Wallace DP, Calvet JP, Kurahashi H, Nagao S. Global gene expression profiling in early-stage polycystic kidney disease in the Han:SPRD Cy rat identifies a role for RXR signaling. Am J Physiol Renal Physiol 2011; 300:F177-88. [PMID: 20926632 DOI: 10.1152/ajprenal.00470.2010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Han:SPRD Cy is a spontaneous rat model of polycystic kidney disease (PKD) caused by a missense mutation in Pkdr1. Cystogenesis in this model is not clearly understood. In the current study, we performed global gene expression profiling in early-stage PKD cyst development in Cy/Cy kidneys and normal (+/+) kidneys at 3 and 7 days of postnatal age. Expression profiles were determined by microarray analysis, followed by validation with real-time RT-PCR. Genes were selected with over 1.5-fold expression changes compared with age-matched +/+ kidneys for canonical pathway analysis. We found nine pathways in common between 3- and 7-day Cy/Cy kidneys. Three significantly changed pathways were designated "Vitamin D Receptor (VDR)/Retinoid X Receptor (RXR) Activation," "LPS/IL-1-Mediated Inhibition of RXR Function," and "Liver X Receptor (LXR)/RXR Activation." These results suggest that RXR-mediated signaling is significantly altered in developing kidneys with mutated Pkdr1. In gene ontology analysis, the functions of these RXR-related genes were found to be involved in regulating cell proliferation and organ morphogenesis. With real-time RT-PCR analysis, the upregulation of Ptx2, Alox15b, OSP, and PCNA, major markers of cell proliferation associated with the RXR pathway, were confirmed in 3- and 7-day Cy/Cy kidneys compared with 3-day +/+ kidneys. The increased RXR protein was observed in both the nucleus and cytoplasm of cystic epithelial cells in early-stage Cy/Cy kidneys, and the RXR-positive cells were strongly positive for PCNA staining. Taken together, cell proliferation and organ morphogenesis signals transduced by RXR-mediated pathways may have important roles for cystogenesis in early-stage PKD in this Pkdr1-mutated Cy rat.
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Affiliation(s)
- Masanori Kugita
- Education and Research Center of Animal Models for Human Diseases, Faculty of Rehabilitation, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake, Aichi, Japan 470-1192
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Yoshihara D, Kurahashi H, Morita M, Kugita M, Hiki Y, Aukema HM, Yamaguchi T, Calvet JP, Wallace DP, Nagao S. PPAR-gamma agonist ameliorates kidney and liver disease in an orthologous rat model of human autosomal recessive polycystic kidney disease. Am J Physiol Renal Physiol 2010; 300:F465-74. [PMID: 21147840 DOI: 10.1152/ajprenal.00460.2010] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
In autosomal recessive polycystic kidney disease (ARPKD), progressive enlargement of fluid-filled cysts is due to aberrant proliferation of tubule epithelial cells and transepithelial fluid secretion leading to extensive nephron loss and interstitial fibrosis. Congenital hepatic fibrosis associated with biliary cysts/dilatations is the most common extrarenal manifestation in ARPKD and can lead to massive liver enlargement. Peroxisome proliferator-activated receptor γ (PPAR-γ), a member of the ligand-dependent nuclear receptor superfamily, is expressed in a variety of tissues, including the kidneys and liver, and plays important roles in cell proliferation, fibrosis, and inflammation. In the current study, we determined that pioglitazone (PIO), a PPAR-γ agonist, decreases polycystic kidney and liver disease progression in the polycystic kidney rat, an orthologous model of human ARPKD. Daily treatment with 10 mg/kg PIO for 16 wk decreased kidney weight (% of body weight), renal cystic area, serum urea nitrogen, and the number of Ki67-, pERK1/2-, and pS6-positive cells in the kidney. There was also a decrease in liver weight (% of body weight), liver cystic area, fibrotic index, and the number of Ki67-, pERK1/2-, pERK5-, and TGF-β-positive cells in the liver. Taken together, these data suggest that PIO inhibits the progression of polycystic kidney and liver disease in a model of human ARPKD by inhibiting cell proliferation and fibrosis. These findings suggest that PPAR-γ agonists may have therapeutic value in the treatment of the renal and hepatic manifestations of ARPKD.
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Affiliation(s)
- Daisuke Yoshihara
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University, Toyoake, Aichi, Japan
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Nagao S, Morita M, Kugita M, Yoshihara D, Yamaguchi T, Kurahashi H, Calvet JP, Wallace DP. Polycystic kidney disease in Han:SPRD Cy rats is associated with elevated expression and mislocalization of SamCystin. Am J Physiol Renal Physiol 2010; 299:F1078-86. [PMID: 20719982 DOI: 10.1152/ajprenal.00504.2009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Polycystic kidney disease (PKD) in Han:SPRD Cy rats is caused by a missense mutation in Anks6 (also called Pkdr1), leading to an R823W substitution in SamCystin, a protein that contains ankyrin repeats and a sterile alpha motif (SAM). The cellular function of SamCystin and the role of the Cy (R823W) mutation in cyst formation are unknown. In normal SPRD rats, SamCystin was found to be expressed in proximal tubules and glomeruli; protein expression was highest at 7 days of age and declined by ∼50-60% at 45-84 days of age. In Cy/+ and Cy/Cy kidneys, expression of SamCystin was lower than in +/+ kidneys at 3 and 7 days but became elevated at 21 days. Immunohistochemical analysis revealed that SamCystin was distributed on the brush border of proximal tubules in normal rat kidneys. In Cy/+ kidneys, there were robust SamCystin staining in cyst-lining epithelial cells and loss of apical localization, and increased number of PCNA-positive cells in cyst-lining epithelia. Verapamil, an L-type Ca(2+) channel blocker, accelerated PKD progression in this model and caused a further increase in the expression and abnormal distribution of SamCystin. We conclude that aberrant expression and mislocalization of R823W SamCystin lead to increased cell proliferation and renal cyst formation.
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Affiliation(s)
- Shizuko Nagao
- The Kidney Institute, Dept. of Medicine, Univ. of Kansas Medical Center, 3901 Rainbow Blvd., Kansas City, KS 66160-3018, USA
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Nishiyama T, Wolf PG, Kugita M, Sinclair RB, Sugita M, Sugiura C, Wakasugi T, Yamada K, Yoshinaga K, Yamaguchi K, Ueda K, Hasebe M. Chloroplast phylogeny indicates that bryophytes are monophyletic. Mol Biol Evol 2004; 21:1813-9. [PMID: 15240838 DOI: 10.1093/molbev/msh203] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Opinions on the basal relationship of land plants vary considerably and no phylogenetic tree with significant statistical support has been obtained. Here, we report phylogenetic analyses using 51 genes from the entire chloroplast genome sequences of 20 representative green plant species. The analyses, using translated amino acid sequences, indicated that extant bryophytes (mosses, liverworts, and hornworts) form a monophyletic group with high statistical confidence and that extant bryophytes are likely sisters to extant vascular plants, although the support for monophyletic vascular plants was not strong. Analyses at the nucleotide level could not resolve the basal relationship with statistical confidence. Bryophyte monophyly inferred using amino acid sequences has a good statistical foundation and is not rejected statistically by other data sets. We propose bryophyte monophyly as the currently best hypothesis.
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Kugita M, Yamamoto Y, Fujikawa T, Matsumoto T, Yoshinaga K. RNA editing in hornwort chloroplasts makes more than half the genes functional. Nucleic Acids Res 2003; 31:2417-23. [PMID: 12711687 PMCID: PMC154213 DOI: 10.1093/nar/gkg327] [Citation(s) in RCA: 154] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2002] [Revised: 02/05/2003] [Accepted: 02/24/2003] [Indexed: 11/15/2022] Open
Abstract
RNA editing in chloroplasts alters the RNA sequence by converting C-to-U or U-to-C at a specific site. During the study of the complete nucleotide sequence of the chloroplast genome from the hornwort Anthoceros formosae, RNA editing events have been systematically investigated. A total of 509 C-to-U and 433 U-to-C conversions are identified in the transcripts of 68 genes and eight ORFs. No RNA editing is seen in any of the rRNA but one tRNA suffered a C-to-U conversion at an anticodon. All nonsense codons in 52 protein-coding genes and seven ORFs are removed in the transcripts by U-to-C conversions, and five initiation and three termination codons are created by C-to-U conversions. RNA editing in intron sequence suggests that editing can precede intercistronic processing. The sequence complementary to the edited site is proposed as a distant cis-recognition element.
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Affiliation(s)
- Masanori Kugita
- Graduate School of Science and Engineering, Shizuoka University, Oya 836, 422-8529 Shizuoka, Japan
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Kugita M, Kaneko A, Yamamoto Y, Takeya Y, Matsumoto T, Yoshinaga K. The complete nucleotide sequence of the hornwort (Anthoceros formosae) chloroplast genome: insight into the earliest land plants. Nucleic Acids Res 2003; 31:716-21. [PMID: 12527781 PMCID: PMC140519 DOI: 10.1093/nar/gkg155] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
It is generally believed that bryophytes are the earliest land plants. However, the phylogenetic relationships among bryophytes, including mosses, liverworts and hornworts, are not clearly resolved. To obtain more information on the earliest land plants, we determined the complete nucleotide sequence of the chloroplast genome from the hornwort Anthoceros formosae. The circular double-stranded DNA of 161 162 bp is the largest genome ever reported among land plant chloroplasts. It contains 76 protein, 32 tRNA and 4 rRNA genes and 10 open reading frames (ORFs), which are identical with the chloroplast genome of the other green plants analyzed. The major difference is a larger inverted repeat than that of the liverwort Marchantia, Anthoceros contains an excess of ndhB and rps7 genes and the 3' exon of rps12. The genes matK and rps15, commonly found in the chloroplast genomes of land plants, are pseudogenes. The intron of rrn23 is the first finding in the known chloroplast genomes of land plants. A striking feature of the hornwort chloroplast is that more than half of the protein-coding genes have nonsense codons, which are converted into sense codons by RNA editing. Maximum-likelihood (ML) analysis, based on 11 518 amino acid sites of 52 proteins encoded in the chloroplast genomes of the green plants, placed liverworts as the sister to all other land plants.
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Affiliation(s)
- Masanori Kugita
- Graduate School of Science and Engineering, Shizuoka University, Oya 836, 422-8529 Shizuoka, Japan
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Eto Y, Kugita M, Sakamoto Y, Hashimoto A, Nakayama M. [Conditions of pregnancy toxemias observed at our delivery section and future problems]. Josanpu Zasshi 1980; 34:550-4. [PMID: 6906418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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