1
|
Takeda Y, Kimura F, Takasawa S. Possible Molecular Mechanisms of Hypertension Induced by Sleep Apnea Syndrome/Intermittent Hypoxia. Life (Basel) 2024; 14:157. [PMID: 38276286 PMCID: PMC10821044 DOI: 10.3390/life14010157] [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: 12/19/2023] [Revised: 01/13/2024] [Accepted: 01/15/2024] [Indexed: 01/27/2024] Open
Abstract
Intermittent hypoxia (IH) is a central characteristic of sleep apnea syndrome (SAS), and it subjects cells in the body to repetitive apnea, chronic hypoxia, oxygen desaturation, and hypercapnia. Since SAS is linked to various serious cardiovascular complications, especially hypertension, many studies have been conducted to elucidate the mechanism of hypertension induced by SAS/IH. Hypertension in SAS is associated with numerous cardiovascular disorders. As hypertension is the most common complication of SAS, cell and animal models to study SAS/IH have developed and provided lots of hints for elucidating the molecular mechanisms of hypertension induced by IH. However, the detailed mechanisms are obscure and under investigation. This review outlines the molecular mechanisms of hypertension in IH, which include the regulation systems of reactive oxygen species (ROS) that activate the renin-angiotensin system (RAS) and catecholamine biosynthesis in the sympathetic nervous system, resulting in hypertension. And hypoxia-inducible factors (HIFs), Endotheline 1 (ET-1), and inflammatory factors are also mentioned. In addition, we will discuss the influences of SAS/IH in cardiovascular dysfunction and the relationship of microRNA (miRNA)s to regulate the key molecules in each mechanism, which has become more apparent in recent years. These findings provide insight into the pathogenesis of SAS and help in the development of future treatments.
Collapse
Affiliation(s)
- Yoshinori Takeda
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Japan;
- Department of Obstetrics and Gynecology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Japan;
| | - Fuminori Kimura
- Department of Obstetrics and Gynecology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Japan;
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Japan;
| |
Collapse
|
2
|
Takasawa S, Makino M, Yamauchi A, Sakuramoto‐Tsuchida S, Hirota R, Fujii R, Asai K, Takeda Y, Uchiyama T, Shobatake R, Ota H. Intermittent hypoxia increased the expression of ESM1 and ICAM-1 in vascular endothelial cells via the downregulation of microRNA-181a1. J Cell Mol Med 2024; 28:e18039. [PMID: 37968862 PMCID: PMC10805502 DOI: 10.1111/jcmm.18039] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 09/25/2023] [Accepted: 10/19/2023] [Indexed: 11/17/2023] Open
Abstract
Sleep apnea syndrome (SAS) exposes cells throughout the body to intermittent hypoxia (IH). Intermittent hypoxia is a risk factor not only for hypertension and insulin resistance but also for vascular dysfunction. We have reported correlations between IH, insulin resistance and hypertension. However, the details of why IH leads to vascular dysfunction remain unclear. In this study, we investigated inflammation-related transcripts in vascular endothelial cells (human HUEhT-1 and mouse UV2) exposed to IH by real-time RT-PCR and found that intercellular adhesion molecule-1 (ICAM-1) and endothelial cell-specific molecule-1 (ESM1) mRNAs were significantly increased. ELISA confirmed that, in the UV2 cell medium, ICAM-1 and ESM1 were significantly increased by IH. However, the promoter activities of ICAM-1 and ESM1 were not upregulated. On the other hand, IH treatment significantly decreased microRNA (miR)-181a1 in IH-treated cells. The introduction of miR-181a1 mimic but not miR-181a1 mimic NC abolished the IH-induced upregulation of Ican-1 and ESM1. These results indicated that ICAM-1 and ESM1 were upregulated by IH via the IH-induced downregulation of miR-181a1 in vascular endothelial cells and suggested that SAS patients developed atherosclerosis via the IH-induced upregulation of ICAM-1 and ESM1.
Collapse
Grants
- 08102003 Ministry of Education, Culture, Sports, Science and Technology
- 5K19425 Ministry of Education, Culture, Sports, Science and Technology
- 21K16344 Ministry of Education, Culture, Sports, Science and Technology
- 21K15375 Ministry of Education, Culture, Sports, Science and Technology
- Ministry of Education, Culture, Sports, Science and Technology
Collapse
Affiliation(s)
- Shin Takasawa
- Department of BiochemistryNara Medical UniversityNaraJapan
| | - Mai Makino
- Department of BiochemistryNara Medical UniversityNaraJapan
| | - Akiyo Yamauchi
- Department of BiochemistryNara Medical UniversityNaraJapan
| | | | - Rina Hirota
- Department of BiochemistryNara Medical UniversityNaraJapan
| | - Ryusei Fujii
- Department of BiochemistryNara Medical UniversityNaraJapan
| | - Keito Asai
- Department of BiochemistryNara Medical UniversityNaraJapan
| | - Yoshinori Takeda
- Department of BiochemistryNara Medical UniversityNaraJapan
- Department of Obstetrics and GynecologyNara Medical UniversityNaraJapan
| | - Tomoko Uchiyama
- Department of BiochemistryNara Medical UniversityNaraJapan
- Department of Diagnostic PathologyNara Medical UniversityNaraJapan
| | - Ryogo Shobatake
- Department of BiochemistryNara Medical UniversityNaraJapan
- Department of NeurologyNara Medical UniversityNaraJapan
| | - Hiroyo Ota
- Department of BiochemistryNara Medical UniversityNaraJapan
- Department of Respiratory MedicineNara Medical UniversityNaraJapan
| |
Collapse
|
3
|
Takasawa S, Shobatake R, Itaya‐Hironaka A, Makino M, Uchiyama T, Sakuramoto‐Tsuchida S, Takeda Y, Ota H, Yamauchi A. Upregulation of IL-8, osteonectin, and myonectin mRNAs by intermittent hypoxia via OCT1- and NRF2-mediated mechanisms in skeletal muscle cells. J Cell Mol Med 2022; 26:6019-6031. [PMID: 36457269 PMCID: PMC9753449 DOI: 10.1111/jcmm.17618] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/21/2022] [Accepted: 11/02/2022] [Indexed: 12/04/2022] Open
Abstract
Sleep apnoea syndrome is characterized by recurrent episodes of oxygen desaturation and reoxygenation (intermittent hypoxia [IH]) and is a risk factor for insulin resistance/Type 2 diabetes. The induction of insulin resistance in skeletal muscle is a key phenomenon to develop diabetes. However, the mechanisms linking IH stress and insulin resistance remain elusive. We exposed human RD and mouse C2C12 muscle cells to normoxia or IH and measured their mRNA levels by real-time RT-PCR. We found that IH significantly increased the mRNA and protein levels of muscle-derived insulin resistance-factors (myokines) such as IL-8, osteonectin (ON), and myonectin (MN) in muscle cells. We further analysed the IH-induced expression mechanisms of IL-8, ON, and MN genes in muscle cells. Deletion analyses of the human myokine promoter(s) revealed that the regions -152 to -151 in IL-8, -105 to -99 in ON, and - 3741 to -3738 in MN promoters were responsible for the activation by IH in RD cells. The promoters contain consensus transcription factor binding sequences for OCT1 in IL-8 and MN promoters, and for NRF2 in ON promoter, respectively. The introduction of siRNA for OCT1 abolished the IH-induced expression(s) of IL-8 and MN and siRNA for NRF2 abolished the IH-induced expression of ON.
Collapse
Affiliation(s)
- Shin Takasawa
- Department of BiochemistryNara Medical UniversityNaraJapan
| | - Ryogo Shobatake
- Department of BiochemistryNara Medical UniversityNaraJapan,Department of NeurologyNara Medical UniversityNaraJapan,Department of NeurologyNara City HospitalNaraJapan
| | | | - Mai Makino
- Department of BiochemistryNara Medical UniversityNaraJapan
| | - Tomoko Uchiyama
- Department of BiochemistryNara Medical UniversityNaraJapan,Department of Diagnostic PathologyNara Medical UniversityNaraJapan
| | | | | | - Hiroyo Ota
- Department of BiochemistryNara Medical UniversityNaraJapan,Department of Respiratory MedicineNara Medical UniversityNaraJapan
| | - Akiyo Yamauchi
- Department of BiochemistryNara Medical UniversityNaraJapan
| |
Collapse
|
4
|
Shobatake R, Ota H, Takahashi N, Ueno S, Sugie K, Takasawa S. The Impact of Intermittent Hypoxia on Metabolism and Cognition. Int J Mol Sci 2022; 23:12957. [PMID: 36361741 PMCID: PMC9654766 DOI: 10.3390/ijms232112957] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/15/2022] [Accepted: 10/23/2022] [Indexed: 11/29/2022] Open
Abstract
Intermittent hypoxia (IH), one of the primary pathologies of sleep apnea syndrome (SAS), exposes cells throughout the body to repeated cycles of hypoxia/normoxia that result in oxidative stress and systemic inflammation. Since SAS is epidemiologically strongly correlated with type 2 diabetes/insulin resistance, obesity, hypertension, and dyslipidemia included in metabolic syndrome, the effects of IH on gene expression in the corresponding cells of each organ have been studied intensively to clarify the molecular mechanism of the association between SAS and metabolic syndrome. Dementia has recently been recognized as a serious health problem due to its increasing incidence, and a large body of evidence has shown its strong correlation with SAS and metabolic disorders. In this narrative review, we first outline the effects of IH on the expression of genes related to metabolism in neuronal cells, pancreatic β cells, hepatocytes, adipocytes, myocytes, and renal cells (mainly based on the results of our experiments). Next, we discuss the literature regarding the mechanisms by which metabolic disorders and IH develop dementia to understand how IH directly and indirectly leads to the development of dementia.
Collapse
Affiliation(s)
- Ryogo Shobatake
- Department of Neurology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Japan
- Department of Neurology, Nara City Hospital, 1-50-1 Higashikidera-cho, Nara 630-8305, Japan
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Japan
| | - Hiroyo Ota
- Department Respiratory Medicine, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Japan
| | - Nobuyuki Takahashi
- Department of Neurology, Nara City Hospital, 1-50-1 Higashikidera-cho, Nara 630-8305, Japan
| | - Satoshi Ueno
- Department of Neurology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Japan
| | - Kazuma Sugie
- Department of Neurology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Japan
| |
Collapse
|
5
|
Takasawa S, Tsuchida C, Sakuramoto-Tsuchida S, Uchiyama T, Makino M, Yamauchi A, Itaya-Hironaka A. Upregulation of REG IV gene in human intestinal epithelial cells by lipopolysaccharide via downregulation of microRNA-24. J Cell Mol Med 2022; 26:4710-4720. [PMID: 35946046 PMCID: PMC9443949 DOI: 10.1111/jcmm.17498] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 07/03/2022] [Accepted: 07/06/2022] [Indexed: 01/10/2023] Open
Abstract
The pathophysiology of inflammatory bowel diseases (IBD) reflects a balance between mucosal injury and reparative mechanisms. Some regenerating gene (Reg) family members (REG Iα, REG Iβ and REG IV) are expressed in Crohn's disease (CD) and ulcerative colitis (UC) and involved as proliferative mucosal factors in IBD. We revealed that REG Iα and REG Iβ were induced in cell culture system by IL‐6/IL‐22. Although REG IV was upregulated in IBD biopsy samples, the upregulation of REG IV was not at all induced in cell culture by autoimmune‐related cytokines such as IL‐6, IL‐22 and TNFα. Here, we analysed REG IV expression in LS‐174 T and HT‐29 human intestinal epithelial cells by real‐time RT–PCR and elisa. REG IV expression was induced by lipopolysaccharide (LPS). However, LPS did not activate REG IV promoter activity. As the LPS‐induced upregulation of REG IV was considered to be regulated post‐transcriptionally, we searched targeted microRNA (miR), which revealed that REG IV mRNA has a potential target sequence for miR‐24. We measured the miR‐24 level of LPS‐treated cells and found that the level was significantly lower. The LPS‐induced increase of REG IV mRNA was abolished by the introduction of miR‐24 mimic but not by non‐specific control RNA.
Collapse
Affiliation(s)
- Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara, Japan
| | | | | | - Tomoko Uchiyama
- Department of Biochemistry, Nara Medical University, Kashihara, Japan.,Department of Diagnostic Pathology, Nara Medical University, Kashihara, Japan
| | - Mai Makino
- Department of Biochemistry, Nara Medical University, Kashihara, Japan
| | - Akiyo Yamauchi
- Department of Biochemistry, Nara Medical University, Kashihara, Japan
| | | |
Collapse
|
6
|
Takasawa S, Makino M, Uchiyama T, Yamauchi A, Sakuramoto-Tsuchida S, Itaya-Hironaka A, Takeda Y, Asai K, Shobatake R, Ota H. Downregulation of the Cd38-Cyclic ADP-Ribose Signaling in Cardiomyocytes by Intermittent Hypoxia via Pten Upregulation. Int J Mol Sci 2022; 23:ijms23158782. [PMID: 35955916 PMCID: PMC9368863 DOI: 10.3390/ijms23158782] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/03/2022] [Accepted: 08/05/2022] [Indexed: 12/11/2022] Open
Abstract
Sleep apnea syndrome (SAS) is characterized by recurrent episodes of oxygen desaturation and reoxygenation (intermittent hypoxia, IH), and it is a risk factor for cardiovascular disease (CVD) and insulin resistance/type 2 diabetes. However, the mechanisms linking IH stress and CVD remain elusive. We exposed rat H9c2 and mouse P19.CL6 cardiomyocytes to experimental IH or normoxia for 24 h to analyze the mRNA expression of the components of Cd38-cyclic ADP-ribose (cADPR) signaling. We found that the mRNA levels of cluster of differentiation 38 (Cd38), type 2 ryanodine receptor (Ryr2), and FK506-binding protein 12.6 (Fkbp12.6) in H9c2 and P19.CL6 cardiomyocytes were significantly decreased by IH, whereas the promoter activities of these genes were not decreased. By contrast, the expression of phosphatase and tensin homolog deleted from chromosome 10 (Pten) was upregulated in IH-treated cells. The small interfering RNA for Pten (siPten) and a non-specific control RNA were introduced into the H9c2 cells. The IH-induced downregulation of Cd38, Ryr2, and Fkbp12.6 was abolished by the introduction of the siPten, but not by the control RNA. These results indicate that IH stress upregulated the Pten in cardiomyocytes, resulting in the decreased mRNA levels of Cd38, Ryr2, and Fkbp12.6, leading to the inhibition of cardiomyocyte functions in SAS patients.
Collapse
Affiliation(s)
- Shin Takasawa
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Nara, Japan
- Correspondence: ; Tel.: +81-74-422-3051 (ext. 2227); Fax: +81-744-24-9525
| | - Mai Makino
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Nara, Japan
| | - Tomoko Uchiyama
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Nara, Japan
- Department of Diagnostic Pathology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Nara, Japan
| | - Akiyo Yamauchi
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Nara, Japan
| | | | - Asako Itaya-Hironaka
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Nara, Japan
| | - Yoshinori Takeda
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Nara, Japan
- Department of Obstetrics and Gynecology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Nara, Japan
| | - Keito Asai
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Nara, Japan
| | - Ryogo Shobatake
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Nara, Japan
- Department of Neurology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Nara, Japan
| | - Hiroyo Ota
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Nara, Japan
- Department of Respiratory Medicine, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Nara, Japan
| |
Collapse
|
7
|
Shobatake R, Ota H, Takahashi N, Ueno S, Sugie K, Takasawa S. Anorexigenic Effects of Intermittent Hypoxia on the Gut-Brain Axis in Sleep Apnea Syndrome. Int J Mol Sci 2021; 23:364. [PMID: 35008784 PMCID: PMC8745445 DOI: 10.3390/ijms23010364] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/23/2021] [Accepted: 12/28/2021] [Indexed: 02/07/2023] Open
Abstract
Sleep apnea syndrome (SAS) is a breathing disorder characterized by recurrent episodes of upper-airway collapse, resulting in intermittent hypoxia (IH) during sleep. Experimental studies with animals and cellular models have indicated that IH leads to attenuation of glucose-induced insulin secretion from pancreatic β cells and to enhancement of insulin resistance in peripheral tissues and cells, such as the liver (hepatocytes), adipose tissue (adipocytes), and skeletal muscles (myocytes), both of which could lead to obesity. Although obesity is widely recognized as a major factor in SAS, it is controversial whether the development of SAS could contribute directly to obesity, and the effect of IH on the expression of appetite regulatory genes remains elusive. Appetite is regulated appropriately by both the hypothalamus and the gut as a gut-brain axis driven by differential neural and hormonal signals. In this review, we summarized the recent epidemiological findings on the relationship between SAS and feeding behavior and focused on the anorexigenic effects of IH on the gut-brain axis by the IH-induced up-regulation of proopiomelanocortin and cocaine- and amphetamine-regulated transcript in neuronal cells and the IH-induced up-regulation of peptide YY, glucagon-like peptide-1 and neurotensin in enteroendocrine cells and their molecular mechanisms.
Collapse
Affiliation(s)
- Ryogo Shobatake
- Department of Neurology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Japan; (S.U.); (K.S.)
- Department of Neurology, Nara City Hospital, 1-50-1 Higashikidera-cho, Nara 630-8305, Japan;
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Japan;
| | - Hiroyo Ota
- Department Respiratory Medicine, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Japan;
| | - Nobuyuki Takahashi
- Department of Neurology, Nara City Hospital, 1-50-1 Higashikidera-cho, Nara 630-8305, Japan;
| | - Satoshi Ueno
- Department of Neurology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Japan; (S.U.); (K.S.)
| | - Kazuma Sugie
- Department of Neurology, Nara Medical University, 840 Shijo-cho, Kashihara 634-8522, Japan; (S.U.); (K.S.)
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara 634-8521, Japan;
| |
Collapse
|
8
|
Uchiyama T, Ota H, Ohbayashi C, Takasawa S. Effects of Intermittent Hypoxia on Cytokine Expression Involved in Insulin Resistance. Int J Mol Sci 2021; 22:12898. [PMID: 34884703 PMCID: PMC8657675 DOI: 10.3390/ijms222312898] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 11/25/2021] [Accepted: 11/26/2021] [Indexed: 12/15/2022] Open
Abstract
Sleep apnea syndrome (SAS) is a prevalent disorder characterized by recurrent apnea or hypoxia episodes leading to intermittent hypoxia (IH) and arousals during sleep. Currently, the relationship between SAS and metabolic diseases is being actively analyzed, and SAS is considered to be an independent risk factor for the development and progression of insulin resistance/type 2 diabetes (T2DM). Accumulating evidence suggests that the short cycles of decreased oxygen saturation and rapid reoxygenation, a typical feature of SAS, contribute to the development of glucose intolerance and insulin resistance. In addition to IH, several pathological conditions may also contribute to insulin resistance, including sympathetic nervous system hyperactivity, oxidative stress, vascular endothelial dysfunction, and the activation of inflammatory cytokines. However, the detailed mechanism by which IH induces insulin resistance in SAS patients has not been fully revealed. We have previously reported that IH stress may exacerbate insulin resistance/T2DM, especially in hepatocytes, adipocytes, and skeletal muscle cells, by causing abnormal cytokine expression/secretion from each cell. Adipose tissues, skeletal muscle, and the liver are the main endocrine organs producing hepatokines, adipokines, and myokines, respectively. In this review, we focus on the effect of IH on hepatokine, adipokine, and myokine expression.
Collapse
Affiliation(s)
- Tomoko Uchiyama
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan;
- Department of Diagnostic Pathology, Nara Medical University, Kashihara 634-8522, Japan;
| | - Hiroyo Ota
- Department of Respiratory Medicine, Nara Medical University, Kashihara 634-8522, Japan;
| | - Chiho Ohbayashi
- Department of Diagnostic Pathology, Nara Medical University, Kashihara 634-8522, Japan;
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan;
| |
Collapse
|
9
|
Takeda Y, Itaya-Hironaka A, Yamauchi A, Makino M, Sakuramoto-Tsuchida S, Ota H, Kawaguchi R, Takasawa S. Intermittent Hypoxia Upregulates the Renin and Cd38 mRNAs in Renin-Producing Cells via the Downregulation of miR-203. Int J Mol Sci 2021; 22:10127. [PMID: 34576290 PMCID: PMC8466835 DOI: 10.3390/ijms221810127] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/16/2021] [Accepted: 09/16/2021] [Indexed: 02/06/2023] Open
Abstract
Sleep apnea syndrome is characterized by recurrent episodes of oxygen desaturation and reoxygenation (intermittent hypoxia [IH]), and it is a known risk factor for hypertension. The upregulation of the renin-angiotensin system has been reported in IH, and the correlation between renin and CD38 has been noted. We exposed human HEK293 and mouse As4.1 renal cells to experimental IH or normoxia for 24 h and then measured the mRNA levels using a real-time reverse transcription polymerase chain reaction. The mRNA levels of Renin (Ren) and Cd38 were significantly increased by IH, indicating that they could be involved in the CD38-cyclic ADP-ribose signaling pathway. We next investigated the promotor activities of both genes, which were not increased by IH. Yet, a target mRNA search of the microRNA (miRNA) revealed both mRNAs to have a potential target sequence for miR-203. The miR-203 level of the IH-treated cells was significantly decreased when compared with the normoxia-treated cells. The IH-induced upregulation of the genes was abolished by the introduction of the miR-203 mimic, but not the miR-203 mimic NC negative control. These results indicate that IH stress downregulates the miR-203 in renin-producing cells, thereby resulting in increased mRNA levels of Ren and Cd38, which leads to hypertension.
Collapse
Affiliation(s)
- Yoshinori Takeda
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (Y.T.); (A.I.-H.); (A.Y.); (M.M.); (S.S.-T.); (H.O.)
- Department of Obstetrics and Gynecology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan;
| | - Asako Itaya-Hironaka
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (Y.T.); (A.I.-H.); (A.Y.); (M.M.); (S.S.-T.); (H.O.)
| | - Akiyo Yamauchi
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (Y.T.); (A.I.-H.); (A.Y.); (M.M.); (S.S.-T.); (H.O.)
| | - Mai Makino
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (Y.T.); (A.I.-H.); (A.Y.); (M.M.); (S.S.-T.); (H.O.)
| | - Sumiyo Sakuramoto-Tsuchida
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (Y.T.); (A.I.-H.); (A.Y.); (M.M.); (S.S.-T.); (H.O.)
| | - Hiroyo Ota
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (Y.T.); (A.I.-H.); (A.Y.); (M.M.); (S.S.-T.); (H.O.)
- Respiratory Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Ryuji Kawaguchi
- Department of Obstetrics and Gynecology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan;
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (Y.T.); (A.I.-H.); (A.Y.); (M.M.); (S.S.-T.); (H.O.)
| |
Collapse
|
10
|
Matsubayashi M, Sakaguchi YM, Sahara Y, Nanaura H, Kikuchi S, Asghari A, Bui L, Kobashigawa S, Nakanishi M, Nagata R, Matsui TK, Kashino G, Hasegawa M, Takasawa S, Eriguchi M, Tsuruya K, Nagamori S, Sugie K, Nakagawa T, Takasato M, Umetani M, Mori E. 27-Hydroxycholesterol regulates human SLC22A12 gene expression through estrogen receptor action. FASEB J 2020; 35:e21262. [PMID: 33368618 PMCID: PMC7771643 DOI: 10.1096/fj.202002077r] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/11/2020] [Accepted: 11/25/2020] [Indexed: 02/06/2023]
Abstract
The excretion and reabsorption of uric acid both to and from urine are tightly regulated by uric acid transporters. Metabolic syndrome conditions, such as obesity, hypercholesterolemia, and insulin resistance, are believed to regulate the expression of uric acid transporters and decrease the excretion of uric acid. However, the mechanisms driving cholesterol impacts on uric acid transporters have been unknown. Here, we show that cholesterol metabolite 27‐hydroxycholesterol (27HC) upregulates the uric acid reabsorption transporter URAT1 encoded by SLC22A12 via estrogen receptors (ER). Transcriptional motif analysis showed that the SLC22A12 gene promoter has more estrogen response elements (EREs) than other uric acid reabsorption transporters such as SLC22A11 and SLC22A13, and 27HC‐activated SLC22A12 gene promoter via ER through EREs. Furthermore, 27HC increased SLC22A12 gene expression in human kidney organoids. Our results suggest that in hypercholesterolemic conditions, elevated levels of 27HC derived from cholesterol induce URAT1/SLC22A12 expression to increase uric acid reabsorption, and thereby, could increase serum uric acid levels.
Collapse
Affiliation(s)
| | | | - Yoshiki Sahara
- RIKEN Center for Biosystems Dynamics Research, Kobe, Japan.,Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Hitoki Nanaura
- Department of Future Basic Medicine, Nara Medical University, Nara, Japan.,Department of Neurology, Nara Medical University, Kashihara, Japan
| | - Sotaro Kikuchi
- Department of Future Basic Medicine, Nara Medical University, Nara, Japan
| | - Arvand Asghari
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Linh Bui
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Shinko Kobashigawa
- Department of Future Basic Medicine, Nara Medical University, Nara, Japan
| | - Mari Nakanishi
- Department of Future Basic Medicine, Nara Medical University, Nara, Japan
| | - Riko Nagata
- Department of Future Basic Medicine, Nara Medical University, Nara, Japan
| | - Takeshi K Matsui
- Department of Future Basic Medicine, Nara Medical University, Nara, Japan.,Department of Neurology, Nara Medical University, Kashihara, Japan
| | - Genro Kashino
- Radioisotope Research Center, Nara Medical University, Kashihara, Japan
| | - Masatoshi Hasegawa
- Department of Radiation Oncology, Nara Medical University, Kashihara, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara, Japan
| | | | - Kazuhiko Tsuruya
- Department of Nephrology, Nara Medical University, Kashihara, Japan
| | - Shushi Nagamori
- Department of Collaborative Research, Nara Medical University, Nara, Japan
| | - Kazuma Sugie
- Department of Neurology, Nara Medical University, Kashihara, Japan
| | - Takahiko Nakagawa
- Department of Future Basic Medicine, Nara Medical University, Nara, Japan
| | - Minoru Takasato
- RIKEN Center for Biosystems Dynamics Research, Kobe, Japan.,Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Michihisa Umetani
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX, USA.,HEALTH Research Institute, University of Houston, Houston, TX, USA
| | - Eiichiro Mori
- Department of Future Basic Medicine, Nara Medical University, Nara, Japan.,V-iCliniX Laboratory, Nara Medical University, Kashihara, Japan
| |
Collapse
|
11
|
Shobatake R, Ota H, Itaya-Hironaka A, Yamauchi A, Makino M, Sakuramoto-Tsuchida S, Uchiyama T, Takahashi N, Ueno S, Sugie K, Takasawa S. Peptide YY (PYY), glucagon-like peptide-1 (GLP-1), and neurotensin (NTS) are up-regulated by intermittent hypoxia in enteroendocrine cells. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.420] [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: 10/25/2022]
|
12
|
Kimura H, Ota H, Kimura Y, Takasawa S. Effects of Intermittent Hypoxia on Pulmonary Vascular and Systemic Diseases. Int J Environ Res Public Health 2019; 16:ijerph16173101. [PMID: 31455007 PMCID: PMC6747246 DOI: 10.3390/ijerph16173101] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/19/2019] [Accepted: 08/21/2019] [Indexed: 12/21/2022]
Abstract
Obstructive sleep apnea (OSA) causes many systemic disorders via mechanisms related to sympathetic nerve activation, systemic inflammation, and oxidative stress. OSA typically shows repeated sleep apnea followed by hyperventilation, which results in intermittent hypoxia (IH). IH is associated with an increase in sympathetic activity, which is a well-known pathophysiological mechanism in hypertension and insulin resistance. In this review, we show the basic and clinical significance of IH from the viewpoint of not only systemic regulatory mechanisms focusing on pulmonary circulation, but also cellular mechanisms causing lifestyle-related diseases. First, we demonstrate how IH influences pulmonary circulation to cause pulmonary hypertension during sleep in association with sleep state-specific change in OSA. We also clarify how nocturnal IH activates circulating monocytes to accelerate the infiltration ability to vascular wall in OSA. Finally, the effects of IH on insulin secretion and insulin resistance are elucidated by using an in vitro chamber system that can mimic and manipulate IH. The obtained data implies that glucose-induced insulin secretion (GIS) in pancreatic β cells is significantly attenuated by IH, and that IH increases selenoprotein P, which is one of the hepatokines, as well as TNF-α, CCL-2, and resistin, members of adipokines, to induce insulin resistance via direct cellular mechanisms. Clinical and experimental findings concerning IH give us productive new knowledge of how lifestyle-related diseases and pulmonary hypertension develop during sleep.
Collapse
Affiliation(s)
- Hiroshi Kimura
- Department of Advanced Medicine for Pulmonary Circulation and Respiratory Failure, Graduate School of Medicine, Nippon Medical School, Bunkyo, Tokyo 113-8603, Japan.
| | - Hiroyo Ota
- Department of Respiratory Medicine, Nara Medical University, Kashihara, Nara 634-8522, Japan
| | - Yuya Kimura
- Center for Pulmonary Diseases, NHO Tokyo National Hospital, Kiyose, Tokyo 204-0023, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara, Nara 634-8521, Japan
| |
Collapse
|
13
|
Kyotani Y, Takasawa S, Yoshizumi M. Proliferative Pathways of Vascular Smooth Muscle Cells in Response to Intermittent Hypoxia. Int J Mol Sci 2019; 20:ijms20112706. [PMID: 31159449 PMCID: PMC6600262 DOI: 10.3390/ijms20112706] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 05/20/2019] [Accepted: 05/30/2019] [Indexed: 12/13/2022] Open
Abstract
Obstructive sleep apnea (OSA) is characterized by intermittent hypoxia (IH) and is a risk factor for cardiovascular diseases (e.g., atherosclerosis) and chronic inflammatory diseases (CID). The excessive proliferation of vascular smooth muscle cells (VSMCs) plays a pivotal role in the progression of atherosclerosis. Hypoxia-inducible factor-1 and nuclear factor-κB are thought to be the main factors involved in responses to IH and in regulating adaptations or inflammation pathways, however, further evidence is needed to demonstrate the underlying mechanisms of this process in VSMCs. Furthermore, few studies of IH have examined smooth muscle cell responses. Our previous studies demonstrated that increased interleukin (IL)-6, epidermal growth factor family ligands, and erbB2 receptor, some of which amplify inflammation and, consequently, induce CID, were induced by IH and were involved in the proliferation of VSMCs. Since IH increased IL-6 and epiregulin expression in VSMCs, the same phenomenon may also occur in other smooth muscle cells, and, consequently, may be related to the incidence or progression of several diseases. In the present review, we describe how IH can induce the excessive proliferation of VSMCs and we develop the suggestion that other CID may be related to the effects of IH on other smooth muscle cells.
Collapse
Affiliation(s)
- Yoji Kyotani
- Department of Pharmacology, Nara Medical University School of Medicine, Kashihara 634-8521, Japan.
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University School of Medicine, Kashihara 634-8521, Japan.
| | - Masanori Yoshizumi
- Department of Pharmacology, Nara Medical University School of Medicine, Kashihara 634-8521, Japan.
| |
Collapse
|
14
|
Mikami S, Ota I, Masui T, Uchiyama T, Okamoto H, Kimura T, Takasawa S, Kitahara T. Resveratrol‑induced REG III expression enhances chemo‑ and radiosensitivity in head and neck cancer in xenograft mice. Oncol Rep 2019; 42:436-442. [PMID: 31059079 DOI: 10.3892/or.2019.7137] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 04/23/2019] [Indexed: 11/06/2022] Open
Abstract
Identifying the key molecules that enhance chemo‑ and radiosensitivity in head and neck squamous cell carcinoma (HNSCC) as well as reliable biomarkers for predicting recurrence and metastasis would be desirable to improve the prognosis of HNSCC. Previously, we have reported that Regenerating gene III (REG III) expression was associated with an improved survival rate for patients with HNSCC. In addition, resveratrol (3,4',5‑trihydroxystilbene) significantly increased REG III expression in HNSCC cells, and significantly inhibited cell growth, enhanced chemo‑ and radiosensitivity, and blocked the cancer invasion of HNSCC cells in vitro. In the present study, the effect of resveratrol on cancer progression in HNSCC was investigated in vivo using a xenograft nude mouse model. The results revealed that resveratrol increased the mRNA level of REG III in vivo, which was in agreement with our previous in vitro findings. Furthermore, REG III increased the antitumor effect of radiation or cisplatin in vivo, and resveratrol sensitized HNSCC to irradiation and cisplatin in vivo. These results indicated that resveratrol could increase the efficacy of cisplatin and irradiation through the REG III expression pathway, resulting in the inhibition of HNSCC progression in vivo.
Collapse
Affiliation(s)
- Shinji Mikami
- Department of Otolaryngology‑Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Ichiro Ota
- Department of Otolaryngology‑Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Takashi Masui
- Department of Otolaryngology‑Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Tomoko Uchiyama
- Department of Biochemistry, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Hideyuki Okamoto
- Department of Otolaryngology, Nara City Hospital, Nara, Nara 630‑8305, Japan
| | - Takahiro Kimura
- Department of Otolaryngology‑Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Tadashi Kitahara
- Department of Otolaryngology‑Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| |
Collapse
|
15
|
Uchiyama T, Itaya-Hironaka A, Yamauchi A, Makino M, Sakuramoto-Tsuchida S, Shobatake R, Ota H, Takeda M, Ohbayashi C, Takasawa S. Intermittent Hypoxia Up-Regulates CCL2, RETN, and TNFα mRNAs in Adipocytes via Down-regulation of miR-452. Int J Mol Sci 2019; 20:ijms20081960. [PMID: 31013606 PMCID: PMC6515141 DOI: 10.3390/ijms20081960] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 04/18/2019] [Accepted: 04/19/2019] [Indexed: 12/16/2022] Open
Abstract
Sleep apnea syndrome (SAS), characterized by recurrent episodes of oxygen desaturation and reoxygenation (intermittent hypoxia [IH]), is a risk factor for insulin resistance. Recently, IH is considered to independently cause adipose tissue inflammation/dysfunction, leading to worsening insulin resistance; however, the detailed mechanism remains unknown. We exposed mouse 3T3-L1 and human SW872 adipocytes to experimental IH or normoxia for 24 h, and analyzed mRNA expression of several adipokines. We found that the mRNA levels of RETN, TNFα, and CCL2 in SW872 and 3T3-L1 adipocytes were significantly increased by IH, whereas the promoter activities of these genes were not increased. A target mRNA search of microRNA (miR)s revealed that all human mRNAs have a potential target sequence for miR-452. The miR-452 level of IH-treated cells was significantly decreased compared to normoxia-treated cells. MiR-452 mimic and non-specific control RNA (miR-452 mimic NC) were introduced into SW872 cells, and the IH-induced up-regulation of the genes was abolished by introduction of the miR-452 mimic but not by the miR-452 mimic NC. These results indicate that IH stress down-regulates the miR-452 in adipocytes, resulting in increased levels of RETN, TNFα, and CCL2 mRNAs, leading to insulin resistance in SAS patients.
Collapse
Affiliation(s)
- Tomoko Uchiyama
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan.
- Department of Diagnostic Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan.
| | - Asako Itaya-Hironaka
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan.
| | - Akiyo Yamauchi
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan.
| | - Mai Makino
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan.
| | | | - Ryogo Shobatake
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan.
| | - Hiroyo Ota
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan.
- Second Department of Internal Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan.
| | - Maiko Takeda
- Department of Diagnostic Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan.
- Department of Laboratory Medicine and Pathology, National Hospital Organization Kinki-chuo Chest Medical Center, 1180 Nagasone-cho, Kita-ku, Sakai, Osaka 591-8025, Japan.
| | - Chiho Ohbayashi
- Department of Diagnostic Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan.
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan.
| |
Collapse
|
16
|
Ota I, Mikami S, Masui T, Kimura T, Uemura H, Okamoto H, Takasawa S, Kitahara T, Shobatake R. Abstract 4199: Resveratrol induced REG III and inhibited head and neck cancer progression. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-4199] [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: 11/16/2022]
Abstract
Abstract
Head and neck squamous cell carcinoma (HNSCC) is one of the 10 most common malignancies in the world and known for clinical progression and poor prognosis. Despite the recent progress of the treatment for improving locoregional control in HNSCC patients, that for recurrence and metastatic control remains insufficient, indicating that there is a continued need for improved treatment strategies. Therefore, the key molecules that enhance chemo- and radio-sensitivity in HNSCC and identification of reliable biomarkers for predicting the recurrence and metastasis would be desirable to improve the prognosis of HNSCC. The human regenerating gene (REG) expression has been reported to be associated with progression of various cancers. Recently, we have reported that REG III expression is associated with an improved survival rate for HNSCC patients as a reliable biomarker. Herein, we investigated the inducer for REG III expression in HNSCC cells and found that resveratrol significantly increased the REG III promoter activity and REG III mRNA. In addition, we demonstrated that the effects of resveratrol on cancer cell progression in HNSCC in vitro and in vivo. To reveal the effects of resveratrol on HNSCC cell proliferation, cell proliferation was measured by using WST-8 assay. Resveratrol significantly inhibited cell growth in FaDu and HSC-4 HNSCC cells. Secondly, to check the effects of resveratrol on chemo- and radio-sensitivity in HNSCC cells, HNSCC cells were expose to cisplatin and radiation, respectively. Resveratrol significantly increased the sensitivity of cisplatin and radiation in HNSCC cells. We also examined the effects of resveratrol on cancer invasion using 24-well Matrigel-coated Transwells. Resveratrol significantly attenuated the cancer invasion of HNSCC cells. Moreover, to assess resveratrol-induced chemo-sensitivity in vivo, we established a xenograft model of HNSCC in BALB/c nude mice. The tumor volumes in the mice receiving combined administration of resveratrol and cisplatin were significantly lower than those of resveratrol or cisplatin alone. These results strongly suggest that resveratrol can inhibit head and neck cancer progression through the REG III expression pathway and can be a potential sensitizer for anticancer therapy for patients with HNSCC.
Citation Format: Ichiro Ota, Shinji Mikami, Takashi Masui, Takahiro Kimura, Hirokazu Uemura, Hideyuki Okamoto, Shin Takasawa, Takashi Kitahara, Ryogo Shobatake. Resveratrol induced REG III and inhibited head and neck cancer progression [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 4199.
Collapse
|
17
|
Aida K, Kobayashi T, Takeshita A, Jimbo E, Nishida Y, Yagihashi S, Hosoi M, Fukui T, Sugawara A, Takasawa S. Crucial role of Reg I from acinar-like cell cluster touching with islets (ATLANTIS) on mitogenesis of beta cells in EMC virus-induced diabetic mice. Biochem Biophys Res Commun 2018; 503:963-969. [PMID: 29935186 DOI: 10.1016/j.bbrc.2018.06.103] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 06/19/2018] [Indexed: 12/12/2022]
Abstract
Recently, we reported the presence of distinct cell clusters named acinar-like cell clusters touching Langerhans islets with thin interstitial surrounding (ATLANTIS) in human pancreas. A morphological study in humans demonstrated that ATLANTIS and islet cell clusters are found together in the microenvironment enclosed by a common basement membrane, and ATLANTIS releases vesicles containing Regenerating gene protein (REG Iα) to islet cell clusters. We examined 1) the presence or absence of ATLANTIS in homozygous Reg I (mouse homologue of human REG Iα) deficient (Reg I-/-) and wild-type mice, and 2) the possible role of ATLANTIS in the regeneration of beta cell clusters after encephalomyocarditis (EMC) virus (D-variant) infection in Reg I-/- and wild-type mice. ATLANTIS was found in both wild-type and Reg I-/- mice. In both groups, mean blood glucose increased transiently to greater than 14.0 mmol/L at 5 days after EMC virus infection and recovered to baseline at 12 days. At 12 days after EMC virus infection, lower BrdU labeling indices were observed in islet beta cells of Reg I-/- mice compared to wild-type mice. Beta cell volume 12 days after EMC virus infection in Reg I-/- mice did not differ from that of wild-type mice. These results suggest that Reg I, which is released from ATLANTIS to islet beta cell clusters, has a crucial role in beta cell regeneration in EMC virus-induced diabetes. The presence of mechanism(s) other than that mediated by Reg I in beta cell restoration after destruction by EMC virus was also suggested.
Collapse
Affiliation(s)
- Kaoru Aida
- Third Department of Internal Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan
| | - Tetsuro Kobayashi
- Division of Immunology and Molecular Medicine, Okinaka Memorial Institute for Medical Research, Tokyo, Japan; Department of Endocrinology and Metabolism, Toranomon Hospital, Tokyo, Japan.
| | - Akira Takeshita
- Department of Endocrinology and Metabolism, Toranomon Hospital, Tokyo, Japan
| | - Erika Jimbo
- Division of Immunology and Molecular Medicine, Okinaka Memorial Institute for Medical Research, Tokyo, Japan
| | - Yoriko Nishida
- Department of Nursing, Interdisciplinary Graduate School of Medicine and Engineering, Department of Medical Sciences Nursing Science (Basic and Clinical Nursing Sciences), University of Yamanashi, Yamanashi, Japan
| | - Soroku Yagihashi
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - Mitsuko Hosoi
- Division of Immunology and Molecular Medicine, Okinaka Memorial Institute for Medical Research, Tokyo, Japan
| | - Tomoyasu Fukui
- Division of Diabetes, Metabolism and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Akira Sugawara
- Department of Molecular Endocrinology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shin Takasawa
- Department of Biochemistry (Biochemistry and Molecular Biology), Nara Medical University, Kashihara, Japan
| |
Collapse
|
18
|
Kyotani Y, Itaya-Hironaka A, Yamauchi A, Sakuramoto-Tsuchida S, Makino M, Takasawa S, Yoshizumi M. Intermittent hypoxia-induced epiregulin expression by IL-6 production in human coronary artery smooth muscle cells. FEBS Open Bio 2018; 8:868-876. [PMID: 29744301 PMCID: PMC5929938 DOI: 10.1002/2211-5463.12430] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 03/16/2018] [Accepted: 04/04/2018] [Indexed: 12/13/2022] Open
Abstract
Patients with obstructive sleep apnea (OSA) experience repetitive episodes of desaturation and resaturation of blood oxygen (known as intermittent hypoxia or IH), during sleep. We showed previously that IH induced excessive proliferation of rat vascular smooth muscle cells through upregulation of members of the epidermal growth factor family, especially epiregulin (EREG), and the erbB2 receptor. In this study, we exposed human coronary artery smooth muscle cells to IH and found that IH significantly increased the expression of EREG. IH increased the production of interleukin‐6 (IL‐6) in smooth muscle cells, and the addition of IL‐6 induced EREG expression. Small interfering RNA for IL‐6 or IL‐6 receptor attenuated the IH‐induced increase in EREG. IL‐6 may play a pivotal role in EREG upregulation by IH and consequently OSA‐related atherosclerosis.
Collapse
Affiliation(s)
- Yoji Kyotani
- Department of Pharmacology Nara Medical University Kashihara Japan
| | | | - Akiyo Yamauchi
- Department of Biochemistry Nara Medical University Kashihara Japan
| | | | - Mai Makino
- Department of Biochemistry Nara Medical University Kashihara Japan
| | - Shin Takasawa
- Department of Biochemistry Nara Medical University Kashihara Japan
| | | |
Collapse
|
19
|
Okamoto N, Morikawa M, Amano N, Yanagi M, Takasawa S, Kurumatani N. Effects of Tooth Loss and the Apolipoprotein E ɛ4 Allele on Mild Memory Impairment in the Fujiwara-kyo Study of Japan: A Nested Case-Control Study. J Alzheimers Dis 2018; 55:575-583. [PMID: 27716671 PMCID: PMC5147497 DOI: 10.3233/jad-160638] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Background: Several studies have suggested that periodontal disease can exacerbate the pro-inflammatory status of the brain. Tooth loss is one of the alternative evaluation indices of periodontal disease. There are few data on the relationship between tooth loss and memory impairment, depending on the apolipoprotein E (APOE) ɛ4 genotype. Objective: To determine if tooth loss is associated with mild memory impairment (MMI) and if this association is modified by the presence of the APOEɛ4 allele. Methods: A nested case-control study was conducted from 2007 to 2012 in Japan. Five hundred and thirty-seven Japanese subjects aged 65 years and over who were cognitively intact at baseline were analyzed. MMI at follow-up was evaluated. Results: The median number of teeth at baseline was significantly lower in MMI participants (n = 179) than in controls (n = 358) (MMI: median 21.0, interquartile range 10.0–25.0 versus controls: 24.0, 14.0–27.0). After adjustment for demographics, vascular risk factors, and APOEɛ4 allele, the multivariate adjusted odds ratio (OR) of ≤8 teeth was 1.97 (95% confidence interval [CI], 1.13–3.44) compared to 25–32 teeth. Participants with both the presence of at least 1 APOEɛ4 allele and ≤8 teeth had a higher risk of MMI compared with those with neither (OR, 2.82; 95% CI, 1.15–6.91). Those with either risk factor alone did not have a higher risk of MMI. Conclusions: A lower number of teeth is related to risk of MMI. This may be primarily true for those individuals with an APOEɛ4 allele.
Collapse
Affiliation(s)
- Nozomi Okamoto
- Department of Community Health and Epidemiology, Nara Medical University, Nara, Japan
| | - Masayuki Morikawa
- Mie Prefectural Mental Medical Center, Mie, Japan.,Department of Psychiatry, Nara Medical University, Nara, Japan
| | | | - Motokazu Yanagi
- Department of Food and Nutrition, Tezukayama University, Nara, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Nara, Japan
| | - Norio Kurumatani
- Department of Community Health and Epidemiology, Nara Medical University, Nara, Japan
| |
Collapse
|
20
|
Shobatake R, Takasawa K, Ota H, Itaya-Hironaka A, Yamauchi A, Sakuramoto-Tsuchida S, Uchiyama T, Makino M, Sugie K, Takasawa S, Ueno S. Up-regulation of POMC and CART mRNAs by intermittent hypoxia via GATA transcription factors in human neuronal cells. Int J Biochem Cell Biol 2018; 95:100-107. [DOI: 10.1016/j.biocel.2017.12.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 12/14/2017] [Accepted: 12/15/2017] [Indexed: 12/13/2022]
|
21
|
Tsuchida C, Sakuramoto-Tsuchida S, Taked M, Itaya-Hironaka A, Yamauchi A, Misu M, Shobatake R, Uchiyama T, Makino M, Pujol-Autonell I, Vives-Pi M, Ohbayashi C, Takasawa S. Expression of REG family genes in human inflammatory bowel diseases and its regulation. Biochem Biophys Rep 2017; 12:198-205. [PMID: 29090282 PMCID: PMC5655384 DOI: 10.1016/j.bbrep.2017.10.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 09/20/2017] [Accepted: 10/09/2017] [Indexed: 12/23/2022] Open
Abstract
The pathophysiology of inflammatory bowel disease (IBD) reflects a balance between mucosal injury and reparative mechanisms. Some regenerating gene (Reg) family members have been reported to be expressed in Crohn's disease (CD) and ulcerative colitis (UC) and to be involved as proliferative mucosal factors in IBD. However, expression of all REG family genes in IBD is still unclear. Here, we analyzed expression of all REG family genes (REG Iα, REG Iβ, REG III, HIP/PAP, and REG IV) in biopsy specimens of UC and CD by real-time RT-PCR. REG Iα, REG Iβ, and REG IV genes were overexpressed in CD samples. REG IV gene was also overexpressed in UC samples. We further analyzed the expression mechanisms of REG Iα, REG Iβ, and REG IV genes in human colon cells. The expression of REG Iα was significantly induced by IL-6 or IL-22, and REG Iβ was induced by IL-22. Deletion analyses revealed that three regions (- 220 to - 211, - 179 to - 156, and - 146 to - 130) in REG Iα and the region (- 274 to- 260) in REG Iβ promoter were responsible for the activation by IL-22/IL-6. The promoters contain consensus transcription factor binding sequences for MZF1, RTEF1/TEAD4, and STAT3 in REG Iα, and HLTF/FOXN2F in REG Iβ, respectively. The introduction of siRNAs for MZF1, RTEF1/TEAD4, STAT3, and HLTF/FOXN2F abolished the transcription of REG Iα and REG Iβ. The gene activation mechanisms of REG Iα/REG Iβ may play a role in colon mucosal regeneration in IBD.
Collapse
Key Words
- CD, Crohn's disease
- CDX2, caudal-type homeobox transcription factor 2
- Celiac disease
- Crohn's disease
- FOXN2, forkhead box protein N2
- GATA6, GATA DNA-binding protein 6
- HLTF, helicase-like transcription factor
- IBD, inflammatory bowel disease
- IL, interleukin
- MZF1, myeloid zinc finger 1
- REG family genes
- REG, regenerating gene
- RTEF1, related transcriptional enhancer factor-1
- SOCS3, suppressors of the cytokine signaling 3
- STAT3, signal transducer and activator of transcription 3
- TEAD4, TEA Domain transcription Factor 4
- Transcription
- UC, ulcerative colitis
- Ulcerative colitis
- siRNA, small interfering RNA
Collapse
Affiliation(s)
- Chikatsugu Tsuchida
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan.,Saiseikai Nara Hospital, Nara 630-8145, Japan
| | | | - Maiko Taked
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan.,Department of Diagnostic Pathology, Nara Medical University, Kashihara 634-8522, Japan.,Department of Laboratory Medicine and Pathology, National Hospital Organization Kinki-chuo Chest Medical Center, Sakai 591-8025, Japan
| | | | - Akiyo Yamauchi
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Masayasu Misu
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Ryogo Shobatake
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Tomoko Uchiyama
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan.,Department of Diagnostic Pathology, Nara Medical University, Kashihara 634-8522, Japan
| | - Mai Makino
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Irma Pujol-Autonell
- Immunology Division, Germans Trias i Pujol Health Sciences Research Institute, Autonomous University of Barcelona, 08916 Badalona, Spain
| | - Marta Vives-Pi
- Immunology Division, Germans Trias i Pujol Health Sciences Research Institute, Autonomous University of Barcelona, 08916 Badalona, Spain.,CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Instituto de Salud Carlos III (ISCIII), 28029, Madrid, Spain
| | - Chiho Ohbayashi
- Department of Diagnostic Pathology, Nara Medical University, Kashihara 634-8522, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| |
Collapse
|
22
|
Shobatake R, Takasawa K, Ota H, Itaya-Hironaka A, Yamauchi A, Sakuramoto-Tsuchida S, Uchiyama T, Makino M, Sugie K, Takasawa S, Ueno S. Intermittent hypoxia up-regulates POMC and cart mRNAs in human neuronal cells. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.846] [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: 11/25/2022]
|
23
|
Tsujinaka H, Itaya-Hironaka A, Yamauchi A, Sakuramoto-Tsuchida S, Shobatake R, Makino M, Masuda N, Hirai H, Takasawa S, Ogata N. Statins decrease vascular epithelial growth factor expression via down-regulation of receptor for advanced glycation end-products. Heliyon 2017; 3:e00401. [PMID: 28971147 PMCID: PMC5612812 DOI: 10.1016/j.heliyon.2017.e00401] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 07/06/2017] [Accepted: 08/31/2017] [Indexed: 12/13/2022] Open
Abstract
Aims Statins, inhibitors of 3-hydroxy-3-methylglutaryl coenzyme A reductase, possess pleiotropic effects that have been extended to modulation of various cellular behaviors. This study aimed to examine whether statins modulate vascular endothelial growth factor A (VEGF-A) expression in human retinal pigment epithelium (RPE) cells. Main methods Human RPE cells (h1RPE7), damaged by hydroquinone (HQ) + advanced glycation endproducts (AGE) in an in vitro AMD model, were treated with atorvastatin or lovastatin for 24 h. The expression of VEGF-A and receptor for AGE (RAGE) was evaluated by real-time RT-PCR. VEGF-A secretion was measured by ELISA. To investigate the impact of RAGE on VEGF-A expression, small interfering RNA (siRNA) for RAGE (siRAGE) was introduced into h1RPE7 cells and VEGF-A expression was measured by real-time RT-PCR. Deletions of VEGF-A and RAGE promoters were performed and transcriptional activities were measured after the addition of statins to HQ + AGE-damaged RPE cells. Key findings The mRNA levels of VEGF-A and RAGE and the levels of VEGF-A in the culture medium were increased by HQ + AGE. Both atorvastatin and lovastatin attenuated HQ + AGE-induced VEGF-A and RAGE expression. These statins also decreased VEGF-A levels in the culture medium. RNA interference of RAGE attenuated the up-regulation of VEGF-A in the HQ + AGE treated cells. The deletion analysis demonstrated that these statins attenuated RAGE promoter activation in HQ + AGE-damaged RPE cells. Significance Statins attenuated HQ + AGE-induced VEGF expression by decreasing RAGE expression. As VEGF is an important factor in developing wet AMD, statins could decrease the risk of wet-type AMD and be used as preventive medicines.
Collapse
Affiliation(s)
- Hiroki Tsujinaka
- Department of Ophthalmology, Nara Medical University, Kashihara 634-8522, Japan.,Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | | | - Akiyo Yamauchi
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | | | - Ryogo Shobatake
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Mai Makino
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Naonori Masuda
- Department of Ophthalmology, Nara Medical University, Kashihara 634-8522, Japan
| | - Hiromasa Hirai
- Department of Ophthalmology, Nara Medical University, Kashihara 634-8522, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Nahoko Ogata
- Department of Ophthalmology, Nara Medical University, Kashihara 634-8522, Japan
| |
Collapse
|
24
|
Mikami S, Ota I, Masui T, Itaya-Hironaka A, Shobatake R, Okamoto H, Takasawa S, Kitahara T. Effect of resveratrol on cancer progression through the REG Ⅲ expression pathway in head and neck cancer cells. Int J Oncol 2016; 49:1553-1560. [PMID: 27633858 DOI: 10.3892/ijo.2016.3664] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 08/12/2016] [Indexed: 11/05/2022] Open
Abstract
Identification of reliable markers of chemo- and radiosensitivity and the key molecules that enhance the susceptibility of head and neck squamous cell carcinoma (HNSCC) to anticancer treatments is highly desirable. Previously, we have reported that regenerating gene (REG) Ⅲ expression was such a marker associated with an improved survival rate for HNSCC patients. In the present study, we investigated the stimulators for induction of REG Ⅲ expression using REG Ⅲ promoter assay in HNSCC cells transfected with REG Ⅲ promoter vector. We tested inflammatory cytokines, growth factors, polyphenols, PPARγ activator of thiazolidinediones, and histone deacetylase inhibitors, and found that 3,4',5-trihydroxy-trans-stilbene (resveratrol) significantly increased the REG Ⅲ promoter activity and the mRNA levels of REG Ⅲ in HNSCC cells. Moreover, we demonstrated the effect of resveratrol on cancer cell progression, such as cell proliferation, chemo‑ and radiosensitivity and cancer invasion of HNSCC cells. Resveratrol significantly inhibited cell growth, enhanced chemo‑ and radiosensitivity, and blocked cancer invasion of HNSCC cells. These data suggested that resveratrol could inhibit cancer progression through the REG Ⅲ expression pathway in HNSCC cells.
Collapse
Affiliation(s)
- Shinji Mikami
- Department of Otolaryngology‑Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Ichiro Ota
- Department of Otolaryngology‑Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Takashi Masui
- Department of Otolaryngology‑Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Asako Itaya-Hironaka
- Department of Biochemistry, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Ryogo Shobatake
- Department of Biochemistry, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Hideyuki Okamoto
- Department of Otolaryngology, Nara City Hospital, Nara 630‑8305, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| | - Tadashi Kitahara
- Department of Otolaryngology‑Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634‑8522, Japan
| |
Collapse
|
25
|
Kitayama Y, Fukui H, Hara K, Eda H, Kodani M, Yang M, Sun C, Yamagishi H, Tomita T, Oshima T, Watari J, Takasawa S, Miwa H. Role of regenerating gene I in claudin expression and barrier function in the small intestine. Transl Res 2016; 173:92-100. [PMID: 27055226 DOI: 10.1016/j.trsl.2016.03.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 02/17/2016] [Accepted: 03/12/2016] [Indexed: 01/01/2023]
Abstract
We have recently shown that loss of the regenerating gene (Reg) I causes susceptibility to nonsteroidal anti-inflammatory drug-induced gastrointestinal damage. However, the mechanism by which Reg I plays a protective role against this pathophysiological condition is unclear. Here, we investigated whether Reg I plays roles in the induction of tight junction proteins and mucosal barrier function in the small intestine. The small-intestinal permeability was evaluated in Reg I-deficient mice by FITC-dextran and transepithelial electrical resistance (TEER) assay. The effect of REG Iα on TEER, claudins expression, and intracellular signaling was examined using Caco2 cells in vitro. Small-intestinal expression of claudins 3 and 4 was investigated in Reg I-deficient mice in vivo. REG I deficiency significantly decreased the expression of claudin 3 in the small-intestinal epithelium. When mice were treated with indomethacin, the serum level of FITC-dextran in Reg I knockout mice was significantly higher than that in wild-type (WT) mice. The level of small-intestinal TEER was significantly decreased in Reg I knockout mice compared with WT mice under normal condition. REG Iα stimulation significantly enhanced the level of TEER in Caco2 cells. Treatment with REG Iα enhanced the expression of claudins 3 and 4 and promoted Sp1, Akt, and ERK phosphorylation in Caco2 cells, whereas these effects were attenuated by treatment with anti-REG Iα antibody. Reg I may play a role in the maintenance of mucosal barrier function by inducing tight junction proteins such as claudins 3 and 4.
Collapse
Affiliation(s)
- Yoshitaka Kitayama
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Hirokazu Fukui
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan.
| | - Ken Hara
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Hirotsugu Eda
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Mio Kodani
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Mo Yang
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan; Department of Digestive Diseases, Tianjin Medical University General Hospital, Tianjin, China
| | - Chao Sun
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan; Department of Digestive Diseases, Tianjin Medical University General Hospital, Tianjin, China
| | - Hidetsugu Yamagishi
- Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, Tochigi, Japan
| | - Toshihiko Tomita
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Tadayuki Oshima
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Jiro Watari
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara, Japan
| | - Hiroto Miwa
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| |
Collapse
|
26
|
Abstract
INTRODUCTION The regenerating gene (Reg) was identified in regenerating islets and its related genes were revealed to constitute the Reg gene family. Reg family proteins act as growth factors for several cells. Recently, autoimmunity against the Reg family proteins has been reported in several diseases. In addition, the Reg family genes were found to be expressed in a large number of cancers and to influence prognosis. AREAS COVERED The historical background and current view of the structure, function, and expression of Reg family genes/proteins and their physiological/pathological significance in several diseases are described. Based on the findings, the diagnostic/therapeutic potential of Reg family genes/proteins is also discussed. EXPERT OPINION Autoimmunity against Reg family proteins may be a new diagnostic marker and/or therapeutic target for immune-mediated diseases. Treatment aimed at the expansion of the β-cell mass by the Reg genes/proteins, combined with the abrogation of autoimmunity, constitutes a potential approach for the treatment of diabetes. Conversely, some cancer cells have gained the ability to overexpress the Reg genes/proteins, thereby enhancing their proliferative capacities, resulting in these cells having a considerable growth advantage. Thus, the Reg genes/proteins are expected to be a new prognostic marker in cancer and/or a future therapeutic target.
Collapse
Affiliation(s)
- Shin Takasawa
- a Department of Biochemistry , Nara Medical University , Kashihara , Japan
| |
Collapse
|
27
|
Enami N, Itaya-Hironaka A, Yamauchi A, Sakuramoto-Tsuchida S, Takasawa S, Takahashi Y. The CD38 genotype (rs1800561 (4693C>T): R140W) is associated with an increased risk of admission to the neonatal intensive care unit. Early Hum Dev 2015; 91:467-70. [PMID: 26025338 DOI: 10.1016/j.earlhumdev.2015.05.002] [Citation(s) in RCA: 3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 04/28/2015] [Accepted: 05/05/2015] [Indexed: 11/25/2022]
Abstract
BACKGROUNDS Preterm birth (PTB)/admission to the neonatal intensive care unit (NICU) is a complex disorder associated with significant neonatal mortality and morbidity and long-term adverse health consequences. Multiple lines of evidence suggest that genetic factors play an important role in its etiology. AIM Given the role of CD38 in term delivery through oxytocin (OXT) release, we hypothesized that OXT signaling may play a role in the etiology of PTB/admission to the NICU. This study was designed to identify genetic variation in the CD38-oxytocin pathway associated with PTB/admission to the NICU. METHODS To identify common genetic variants predisposing individuals to PTB/admission to the NICU, we genotyped two single nucleotide polymorphisms (SNPs) in the CD38-oxytocin pathway in 63 case mothers, 55 control mothers, and 188 female volunteers in Nara Medical University Hospital, Japan. RESULTS Maternal genetic effect analysis of the SNP genotype data revealed a significant association between an SNP in CD38 (rs1800561 (4693C>T): R140W), which was reported to be correlated with diabetes and autism, and the risk of NICU admission. On the other hand, an SNP in the oxytocin receptor (OXTR) (rs2254298) showed no correlation with the risk of NICU admission. CONCLUSION Our study points to an association between maternal common polymorphisms in the CD38 (rs1800561) gene in Japanese women and susceptibility to PTB/admission to the NICU. Future studies with larger sample sizes are needed to confirm the findings of this study.
Collapse
Affiliation(s)
- Nobuko Enami
- Division of Neonatal Intensive Care, Perinatal Center, Nara Medical University Hospital, Kashihara 634-8522, Japan
| | | | - Akiyo Yamauchi
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | | | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan.
| | - Yukihiro Takahashi
- Division of Neonatal Intensive Care, Perinatal Center, Nara Medical University Hospital, Kashihara 634-8522, Japan
| |
Collapse
|
28
|
Tsujinaka H, Itaya-Hironaka A, Yamauchi A, Sakuramoto-Tsuchida S, Ota H, Takeda M, Fujimura T, Takasawa S, Ogata N. Human retinal pigment epithelial cell proliferation by the combined stimulation of hydroquinone and advanced glycation end-products via up-regulation of VEGF gene. Biochem Biophys Rep 2015; 2:123-131. [PMID: 29124153 PMCID: PMC5668646 DOI: 10.1016/j.bbrep.2015.05.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 05/12/2015] [Accepted: 05/18/2015] [Indexed: 01/26/2023] Open
Abstract
Although recent research showed that advanced glycation endproduct (AGE) and hydroquinone (HQ) are related to the pathogenesis of age-related macular degeneration (AMD), the mechanism how AGE and HQ induce or accelerate AMD remains elusive. In the present study, we examined the effects of AGE and HQ on changes of human retinal pigment epithelial (RPE) cell numbers and found that the viable cell numbers were markedly reduced by HQ by apoptosis and that AGE prevented the decreases of HQ-treated cell numbers by increased replicative DNA synthesis of RPE cells without changing apoptosis. Real-time RT-PCR revealed that vascular endothelial growth factor (VEGF)-A mRNA was increased by HQ treatment and the addition of HQ+AGE resulted in a further increment. The increase of VEGF secretion was confirmed by ELISA, and inhibition of VEGF signaling by chemical inhibitors and small interfering RNA decreased the HQ+AGE-induced increases in RPE cell numbers. The deletion analysis demonstrated that -102 to -43 region was essential for the VEGF-A promoter activation. Site-directed mutaions of specificity protein 1 (SP1) binding sequences in the VEGF-A promoter and RNA interference of SP1 revealed that SP1 is an essential transcription factor for VEGF-A expression. These results indicate that HQ induces RPE cell apoptosis, leading to dry AMD, and suggest that AGE stimulation in addition to HQ enhances VEGF-A transcription via the AGE-receptor for AGE pathway in HQ-damaged cells. As a result, the secreted VEGF acts as an autocrine/paracrine growth factor for RPE and/or adjacent vascular cells, causing wet AMD.
Collapse
Key Words
- AGE, advanced glycation endproduct
- AMD, age-related macular degeneration
- Advanced glycation endproduct(s)
- Age-related macular degeneration
- BSA, bovine serum albumin
- ELISA, enzyme-linked immunosorbent assay
- FCS, fetal calf serum
- HQ, hydroquinone
- Hydroquinone
- IdU, 5ʹ-Indo-2ʹ-deoxyuridine
- RAGE, receptor for advanced glycation endproduct
- RPE, retinal pigment epithelial
- RT-PCR, reverse transcription polymerase chain reaction;
- Retinal pigment epithelial cells
- SP1, specificity protein 1
- SR, scavenger receptor
- TUNEL, terminal deoxynucleotidyl transferase dUTP nick end labeling
- VEGF, vascular endothelial growth factor
- Vascular endothelial growth factor
- WST-8, 2-(2-methoxy-4-nitrophenyl)-3-(4-nitrophenyl)-5-(2,4-disulfophenyl)-2H-tetrazolium monosodium salt
- siRNA, small interfering RNA
Collapse
Affiliation(s)
- Hiroki Tsujinaka
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
- Department of Ophthalmology, Nara Medical University, Kashihara, 634-8522 Nara, Japan
| | - Asako Itaya-Hironaka
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | - Akiyo Yamauchi
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | | | - Hiroyo Ota
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | - Maiko Takeda
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | - Takanori Fujimura
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | - Nahoko Ogata
- Department of Ophthalmology, Nara Medical University, Kashihara, 634-8522 Nara, Japan
| |
Collapse
|
29
|
Sun C, Fukui H, Hara K, Kitayama Y, Eda H, Yang M, Yamagishi H, Tomita T, Oshima T, Watari J, Takasawa S, Chiba T, Miwa H. Expression of Reg family genes in the gastrointestinal tract of mice treated with indomethacin. Am J Physiol Gastrointest Liver Physiol 2015; 308:G736-44. [PMID: 25747353 DOI: 10.1152/ajpgi.00362.2014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 02/19/2015] [Indexed: 01/31/2023]
Abstract
Regenerating gene (Reg) family proteins, which are classified into four types, commonly act as trophic and/or antiapoptotic factors in gastrointestinal (GI) diseases. However, it remains unclear how these proteins coordinate their similar roles under such pathophysiological conditions. Here, we investigated the interrelationships of Reg family gene expression with mucosal cell proliferation and apoptosis in nonsteroidal anti-inflammatory drug (NSAID)-induced GI injury. GI injury was induced by subcutaneous injection of indomethacin into Reg I knockout (KO) and wild-type (WT) mice, and its severity was scored histopathologically. Temporal changes in the expression of Reg family genes, mucosal proliferation, and apoptosis were evaluated throughout the GI tract by real-time RT-PCR, Ki-67 immunoreactivity, and TUNEL assay, respectively. Reg I, Reg III family, and Reg IV were predominantly expressed in the upper, middle, and lower GI mucosa, respectively. Expression of Reg I and Reg III family genes was upregulated in specific portions of the GI tract after indomethacin treatment. Ki-67-positive epithelial cells were significantly decreased in the gastric and small-intestinal mucosa of Reg I KO mice under normal conditions. After treatment with indomethacin, the number of TUNEL-positive cells was significantly greater throughout the GI mucosa in Reg I KO mice than in WT mice. Expression of Reg I was independent of that of other Reg family genes in, not only normal GI tissues, but also indomethacin-induced GI lesions. Members of the Reg gene family show distinct profiles of expression in the GI tract, and Reg I independently plays a role in protecting the GI mucosa against NSAID-induced injury.
Collapse
Affiliation(s)
- Chao Sun
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan; Department of Digestive Diseases, Tianjin Medical University General Hospital, Tianjin, China
| | - Hirokazu Fukui
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan;
| | - Ken Hara
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Yoshitaka Kitayama
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Hirotsugu Eda
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Mo Yang
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan; Department of Digestive Diseases, Tianjin Medical University General Hospital, Tianjin, China
| | - Hidetsugu Yamagishi
- Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, Tochigi, Japan
| | - Toshihiko Tomita
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Tadayuki Oshima
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Jiro Watari
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara, Japan
| | - Tsutomu Chiba
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hiroto Miwa
- Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| |
Collapse
|
30
|
Yamauchi A, Itaya-Hironaka A, Sakuramoto-Tsuchida S, Takeda M, Yoshimoto K, Miyaoka T, Fujimura T, Tsujinaka H, Tsuchida C, Ota H, Takasawa S. Synergistic activations of REG I α and REG I β promoters by IL-6 and Glucocorticoids through JAK/STAT pathway in human pancreatic β cells. J Diabetes Res 2015; 2015:173058. [PMID: 25767811 PMCID: PMC4342170 DOI: 10.1155/2015/173058] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 01/26/2015] [Indexed: 12/31/2022] Open
Abstract
Reg (Regenerating gene) gene was originally isolated from rat regenerating islets and its encoding protein was revealed as an autocrine/paracrine growth factor for β cells. Rat Reg gene is activated in inflammatory conditions for β cell regeneration. In human, although five functional REG family genes (REG Iα, REG Iβ, REG III, HIP/PAP, and REG IV) were isolated, their expressions in β cells under inflammatory conditions remained unclear. In this study, we found that combined addition of IL-6 and dexamethasone (Dx) induced REG Iα and REG Iβ expression in human 1.1B4 β cells. Promoter assay revealed that a signal transducer and activator of transcription- (STAT-) binding site in each promoter of REG Iα (TGCCGGGAA) and REG Iβ (TGCCAGGAA) was essential for the IL-6+Dx-induced promoter activation. A Janus kinase 2 (JAK2) inhibitor significantly inhibited the IL-6+Dx-induced REG Iα and REG Iβ transcription. Electrophoretic mobility shift assay and chromatin immunoprecipitation revealed that IL-6+Dx stimulation increased STAT3 binding to the REG Iα promoter. Furthermore, small interfering RNA-mediated targeting of STAT3 blocked the IL-6+Dx-induced expression of REG Iα and REG Iβ. These results indicate that the expression of REG Iα and REG Iβ should be upregulated in human β cells under inflammatory conditions through the JAK/STAT pathway.
Collapse
Affiliation(s)
- Akiyo Yamauchi
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | | | | | - Maiko Takeda
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Kiyomi Yoshimoto
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Tomoko Miyaoka
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Takanori Fujimura
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Hiroki Tsujinaka
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Chikatsugu Tsuchida
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Hiroyo Ota
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara 634-8521, Japan
- *Shin Takasawa:
| |
Collapse
|
31
|
Okamoto H, Takasawa S, Sugawara A. The CD38-Cyclic ADP-Ribose System in Mammals: Historical Background, Pathophysiology and Perspective. ACTA ACUST UNITED AC 2014. [DOI: 10.1166/msr.2014.1032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
32
|
Fujimura T, Fujimoto T, Itaya-Hironaka A, Miyaoka T, Kondo S, Yoshimoto K, Sakuramoto-Tsuchida S, Yamauchi A, Takeda M, Tsujinaka H, Tanaka Y, Takasawa S. AB0189 Interleukin-6/Stat Pathway is Responsible for the Induction of REG Iα, A New Auto-Antigen in SjÖGren's Syndrome Patients, in Salivary Duct Epithelial Cells. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
33
|
Aida K, Saitoh S, Nishida Y, Yokota S, Ohno S, Mao X, Akiyama D, Tanaka S, Awata T, Shimada A, Oikawa Y, Shimura H, Furuya F, Takizawa S, Ichijo M, Ichijo S, Itakura J, Fujii H, Hashiguchi A, Takasawa S, Endo T, Kobayashi T. Distinct cell clusters touching islet cells induce islet cell replication in association with over-expression of Regenerating Gene (REG) protein in fulminant type 1 diabetes. PLoS One 2014; 9:e95110. [PMID: 24759849 PMCID: PMC3997392 DOI: 10.1371/journal.pone.0095110] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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: 12/02/2013] [Accepted: 03/23/2014] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Pancreatic islet endocrine cell-supporting architectures, including islet encapsulating basement membranes (BMs), extracellular matrix (ECM), and possible cell clusters, are unclear. PROCEDURES The architectures around islet cell clusters, including BMs, ECM, and pancreatic acinar-like cell clusters, were studied in the non-diabetic state and in the inflamed milieu of fulminant type 1 diabetes in humans. RESULT Immunohistochemical and electron microscopy analyses demonstrated that human islet cell clusters and acinar-like cell clusters adhere directly to each other with desmosomal structures and coated-pit-like structures between the two cell clusters. The two cell-clusters are encapsulated by a continuous capsule composed of common BMs/ECM. The acinar-like cell clusters have vesicles containing regenerating (REG) Iα protein. The vesicles containing REG Iα protein are directly secreted to islet cells. In the inflamed milieu of fulminant type 1 diabetes, the acinar-like cell clusters over-expressed REG Iα protein. Islet endocrine cells, including beta-cells and non-beta cells, which were packed with the acinar-like cell clusters, show self-replication with a markedly increased number of Ki67-positive cells. CONCLUSION The acinar-like cell clusters touching islet endocrine cells are distinct, because the cell clusters are packed with pancreatic islet clusters and surrounded by common BMs/ECM. Furthermore, the acinar-like cell clusters express REG Iα protein and secrete directly to neighboring islet endocrine cells in the non-diabetic state, and the cell clusters over-express REG Iα in the inflamed milieu of fulminant type 1 diabetes with marked self-replication of islet cells.
Collapse
Affiliation(s)
- Kaoru Aida
- Department of Internal Medicine III, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Sei Saitoh
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Yoriko Nishida
- Department of Nursing, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Sadanori Yokota
- Section of Functional Morphology, Faculty of Pharmaceutical Sciences, Nagasaki International University, Saseho, Nagasaki, Japan
| | - Shinichi Ohno
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Xiayang Mao
- Department of Computer Science, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Daiichiro Akiyama
- Department of Internal Medicine III, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Shoichiro Tanaka
- Department of Internal Medicine III, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Takuya Awata
- Division of Endocrinology and Diabetes, Department of Medicine, Saitama Medical School, Moroyama, Saitama, Japan
| | - Akira Shimada
- Department of Internal Medicine, Saiseikai Central Hospital, Tokyo, Japan
| | - Youichi Oikawa
- Department of Internal Medicine, Saiseikai Central Hospital, Tokyo, Japan
| | - Hiroki Shimura
- Department of Laboratory Medicine, Fukushima Medical University, Fukushima, Fukushima, Japan
| | - Fumihiko Furuya
- Department of Internal Medicine III, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Soichi Takizawa
- Department of Internal Medicine III, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Masashi Ichijo
- Department of Internal Medicine III, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Sayaka Ichijo
- Department of Internal Medicine III, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Jun Itakura
- Department of Surgery I, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Hideki Fujii
- Department of Surgery I, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Akinori Hashiguchi
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, Kashihara, Wakayama, Japan
| | - Toyoshi Endo
- Department of Internal Medicine III, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Tetsuro Kobayashi
- Department of Internal Medicine III, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
- * E-mail:
| |
Collapse
|
34
|
Klasan GS, Ivanac D, Erzen DJ, Picard A, Takasawa S, Peharec S, Arbanas J, Girotto D, Jerkovic R. Reg3G
gene expression in regenerating skeletal muscle and corresponding nerve. Muscle Nerve 2013; 49:61-8. [DOI: 10.1002/mus.23877] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2013] [Indexed: 12/19/2022]
Affiliation(s)
- Gordana Starcevic Klasan
- Department of Anatomy; School of Medicine; University of Rijeka; Brace Branchetta 20 51000 Rijeka Croatia
| | - Danijel Ivanac
- Department of Anatomy; School of Medicine; University of Rijeka; Brace Branchetta 20 51000 Rijeka Croatia
| | | | - Anne Picard
- Department of Biomedical Science; University of Padua; Padua Italy
| | - Shin Takasawa
- Department of Biochemistry; Nara Medical University; Nara Japan
| | | | - Juraj Arbanas
- Department of Anatomy; School of Medicine; University of Rijeka; Brace Branchetta 20 51000 Rijeka Croatia
| | - Dean Girotto
- Department of Neurosurgery; University Hospital Rijeka; Rijeka Croatia
| | - Romana Jerkovic
- Department of Anatomy; School of Medicine; University of Rijeka; Brace Branchetta 20 51000 Rijeka Croatia
| |
Collapse
|
35
|
Yoshimoto K, Fujimoto T, Itaya-Hironaka A, Miyaoka T, Sakuramoto-Tsuchida S, Yamauchi A, Takeda M, Kasai T, Nakagawara K, Nonomura A, Takasawa S. Involvement of autoimmunity to REG, a regeneration factor, in patients with primary Sjögren's syndrome. Clin Exp Immunol 2013; 174:1-9. [PMID: 23701206 DOI: 10.1111/cei.12142] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2013] [Indexed: 12/21/2022] Open
Abstract
The regenerating gene (Reg) was isolated originally as a gene specifically over-expressed in regenerating pancreatic islets and constitute a growth factor family. Reg gene product (Reg) is important in the pathophysiology of various human inflammatory diseases. Recently, the possible involvement of human REG in the regeneration of salivary ductal epithelial cells of patients with primary Sjögren's syndrome (SS) was reported. However, the expression of the REG family genes in minor salivary glands (MSG) and the occurrence of anti-REG Iα autoantibodies in SS patients were obscured. In this study, we examined the expression of REG family genes in the MSG of SS and screened anti-REG Iα autoantibodies in SS. The mRNA levels of REG family genes in MSG were quantified using real-time reverse transcription-polymerase chain reaction (RT-PCR) and REG Iα expression in the MSG was analysed by immunohistochemistry. The mRNA level of REG Iα in the MSG of SS patients was significantly higher than that of control. REG Iα protein was expressed highly in SS ductal epithelial cells. Anti-REG Iα autoantibodies in the sera were found in 11% of SS. All the MSG in the anti-REG Iα autoantibody-positive group showed REG Iα expression, whereas only 40% showed REG Iα expression in the anti-REG Iα autoantibody-negative group. The anti-REG Iα autoantibody-positive group showed significantly lower saliva secretion and a higher ratio of grade 4 (by Rubin-Holt) in sialography. These data suggest strongly that autoimmunity to REG Iα might play a role in the degeneration of MSG ductal epithelial cells in primary SS.
Collapse
Affiliation(s)
- K Yoshimoto
- Department of Biochemistry, Nara Medical University, Kashihara, Japan; Department of General Medicine, Nara Medical University, Kashihara, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Nakagawa K, Takasawa S, Nata K, Yamauchi A, Itaya-Hironaka A, Ota H, Yoshimoto K, Sakuramoto-Tsuchida S, Miyaoka T, Takeda M, Unno M, Okamoto H. Prevention of Reg I-induced β-cell apoptosis by IL-6/dexamethasone through activation of HGF gene regulation. Biochimica et Biophysica Acta (BBA) - Molecular Cell Research 2013; 1833:2988-2995. [DOI: 10.1016/j.bbamcr.2013.08.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 08/05/2013] [Accepted: 08/07/2013] [Indexed: 12/12/2022]
|
37
|
Kyotani Y, Ota H, Itaya-Hironaka A, Yamauchi A, Sakuramoto-Tsuchida S, Zhao J, Ozawa K, Nagayama K, Ito S, Takasawa S, Kimura H, Uno M, Yoshizumi M. Intermittent hypoxia induces the proliferation of rat vascular smooth muscle cell with the increases in epidermal growth factor family and erbB2 receptor. Exp Cell Res 2013; 319:3042-50. [DOI: 10.1016/j.yexcr.2013.08.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 07/31/2013] [Accepted: 08/06/2013] [Indexed: 11/25/2022]
|
38
|
Akther S, Korshnova N, Zhong J, Liang M, Cherepanov SM, Lopatina O, Komleva YK, Salmina AB, Nishimura T, Fakhrul AA, Hirai H, Kato I, Yamamoto Y, Takasawa S, Okamoto H, Higashida H. CD38 in the nucleus accumbens and oxytocin are related to paternal behavior in mice. Mol Brain 2013; 6:41. [PMID: 24059452 PMCID: PMC3848913 DOI: 10.1186/1756-6606-6-41] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 09/17/2013] [Indexed: 11/17/2022] Open
Abstract
Background Mammalian sires participate in infant care. We previously demonstrated that sires of a strain of nonmonogamous laboratory mice initiate parental retrieval behavior in response to olfactory and auditory signals from the dam during isolation in a new environment. This behavior is rapidly lost in the absence of such signals when the sires are caged alone. The neural circuitry and hormones that control paternal behavior are not well-understood. CD38, a membrane glycoprotein, catalyzes synthesis of cyclic ADP-ribose and facilitates oxytocin (OT) secretion due to cyclic ADP-ribose-dependent increases in cytosolic free calcium concentrations in oxytocinergic neurons in the hypothalamus. In this paper, we studied CD38 in the nucleus accumbens (NAcc) and the role of OT on paternal pup retrieval behavior using CD38 knockout (CD38−/−) mice of the ICR strain. Results CD38−/− sires failed to retrieve when they were reunited with their pups after isolation together with the mate dams, but not with pup, in a novel cage for 10 min. CD38−/− sires treated with a single subcutaneous injection of OT exhibited recovery in the retrieval events when caged with CD38−/− dams treated with OT. We introduced human CD38 in the NAcc of CD38−/− sires using a lentiviral infection technique and examined the effects of local expression of CD38. Pairs of knockout dams treated with OT and sires expressing CD38 in the NAcc showed more retrieval (83% of wild-type sire levels). Complete recovery of retrieval was obtained in sires with the expression of CD38 in the NAcc in combination with OT administration. Other paternal behaviors, including pup grooming, crouching and huddling, were also more common in CD38−/− sires with CD38 expression in the NAcc compared with those in CD38−/− sires without CD38 expression in the NAcc. Conclusions CD38 in the NAcc and OT are critical in paternal behavior.
Collapse
Affiliation(s)
- Shirin Akther
- Kanazawa University Center for Child Mental Development, Kanazawa 920-8640, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Kimura M, Naito H, Tojo T, Itaya-Hironaka A, Dohi Y, Yoshimura M, Nakagawara KI, Takasawa S, Taniguchi S. REG Iα gene expression is linked with the poor prognosis of lung adenocarcinoma and squamous cell carcinoma patients via discrete mechanisms. Oncol Rep 2013; 30:2625-31. [PMID: 24065141 PMCID: PMC3840002 DOI: 10.3892/or.2013.2739] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Accepted: 08/20/2013] [Indexed: 01/19/2023] Open
Abstract
The aim of the present study was to evaluate the effects of the REG Iα and REG Iβ genes on lung cancer cell lines, and thereafter, the expression of REG family genes (REG Iα, REG Iβ, REG III, HIP/PAP and REG IV) in lung cancer in relation to patient prognosis was evaluated. Lung adenocarcinoma (AD) and squamous cell carcinoma (SCC) cell lines expressing REG Iα or REG Iβ (HLC-1 REG Iα/Iβ and EBC-1 REG Iα/Iβ) were established, and cell number, cell invasive activity, and anchorage-independent cell growth were compared with these variables in the control cells. The expression levels of REG family genes were evaluated by real-time RT-PCR in surgically resected lung cancers, and disease-specific survival (DSS) curves were generated. The HLC-1 REG Iα/Iβ cell line showed significant increases in cell number and anchorage-independent cell growth compared with the control cells. EBC-1 REG Iα/Iβ cells showed significant increases in cell invasive activity and anchorage-independent cell growth as compared with the control cells. Except for the REG Iβ gene, expression of other REG family genes was observed in the surgically resected samples; however, DSS was significantly worse only in stage I patients who were positive for REG Iα expression than in patients who were negative for REG Iα expression. The effects of REG Iα on AD and SCC cells were different in the in vitro study, and a correlation between REG Iα expression and patient prognosis was noted in the in vivo study. Therefore, overexpression of REG Iα is a risk factor for poor prognosis caused by discrete mechanisms in AD and SCC patients.
Collapse
Affiliation(s)
- Michitaka Kimura
- Department of Thoracic and Cardiovascular Surgery, Nara Medical University, Kashihara, Nara 634-8522, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Mino M, Kamii H, Fujimura M, Kondo T, Takasawa S, Okamoto H, Yoshimoto T. Temporal changes of neurogenesis in the mouse hippocampus after experimental subarachnoid hemorrhage. Neurol Res 2013; 25:839-45. [PMID: 14669527 DOI: 10.1179/016164103771953934] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [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: 01/19/2023]
Abstract
Recent studies indicate the existence of progenitor cells and their potential for neurogenesis in the subventricular zone (SVZ) and the hippocampus dentate gyrus (DG) of normal adult mammalian brain. Increased neurogenesis has been shown following cerebral ischemia and traumatic brain injury; however, the involvement of neurogenesis in subarachnoid hemorrhage (SAH) has not been examined. Adult male CD-1 mice were subjected to SAH by endovascular perforation of the left anterior cerebral artery. Mice received intraperitoneal injections of the cell proliferation-specific marker 5'-bromodeoxyuridine (BrdU) after SAH induction. BrdU incorporation was examined from 1 to 30 days after SAH by immunohistochemistry. The BrdU-positive cells were detected in SVZ and DG of normal control brain, and were significantly decreased in both areas three days after SAH. The number of these cells had recovered to its control level seven days after SAH. Double staining with BrdU and NeuN indicated that the majority of the BrdU-positive cells migrating into the granular cell layer of the DG became NeuN-positive 30 days after SAH. In conclusion, temporal changes of the neurogenesis as shown in the present study suggest that neurogenesis in the hippocampus may affect functional outcome after SAH. The induction of the neurogenesis can provide therapeutic value against SAH.
Collapse
Affiliation(s)
- Masaki Mino
- Department of Neurosurgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
| | | | | | | | | | | | | |
Collapse
|
41
|
Fujimura T, Fujimoto T, Itaya-Hironaka A, Miyaoka T, Yoshimoto K, Sakuramoto-Tsuchida S, Yamauchi A, Tsujinaka H, Tanaka Y, Takasawa S. AB0136 Induction of reg ia, a new auto-antigen in sjögren’s syndrome patients, in salivary duct epithelial cells by interleukin-6 and -11. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2459] [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: 11/04/2022]
|
42
|
Naito H, Yoshimura M, Mizuno T, Takasawa S, Tojo T, Taniguchi S. The advantages of three-dimensional culture in a collagen hydrogel for stem cell differentiation. J Biomed Mater Res A 2013; 101:2838-45. [PMID: 23468218 DOI: 10.1002/jbm.a.34578] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 11/21/2012] [Accepted: 01/04/2013] [Indexed: 11/06/2022]
Abstract
We evaluated the advantages of three-dimensional (3D) culture in a collagen hydrogel for stem cell differentiation, including the morphology of differentiated cells, differentiation efficiency of stem cells from aged rat and cells after passaging and freeze/thawing. Rat mesenchymal stem cells (MSCs) from young and aged rats, and MSCs after passaging and freeze/thawing were induced to differentiate into osteoblasts in 3D and 2D cultures, and histological studies were performed. Differentiation efficiency was evaluated by markers of osteoblastic differentiation including Runx2 and osterix gene expressions, osteocalcin secretion and calcium deposition. MSCs were stained positive for alkaline phosphatase in 3D and 2D cultures. However, the morphology of differentiated cells in 3D culture, which was different from that in 2D culture, was similar to that of osteoblasts in vivo. Markers of osteoblastic differentiation in MSCs from aged rats in 3D culture were higher than those in MSCs from young rats in 2D culture. Markers of osteoblastic differentiation in MSCs after passaging and freeze/thawing in 3D culture were higher than those in nonpassaged MSCs in 2D culture. These results indicate that 3D culture in a collagen hydrogel has advantages for the differentiation of MSCs into osteoblasts with a similar phenotype to that of in vivo, when using even MSCs from aged donors or after passaging and freeze/thawing.
Collapse
Affiliation(s)
- Hiroshi Naito
- Department of Thoracic and Cardiovascular Surgery, Nara Medical University School of Medicine, Kashihara, Nara 634-8522, Japan
| | | | | | | | | | | |
Collapse
|
43
|
Ikeda T, Takasawa S, Noguchi N, Nata K, Yamauchi A, Takahashi I, Yoshikawa T, Sugawara A, Yonekura H, Okamoto H. Identification of a major enzyme for the synthesis and hydrolysis of cyclic ADP-ribose in amphibian cells and evolutional conservation of the enzyme from human to invertebrate. Mol Cell Biochem 2012; 366:69-80. [PMID: 22422046 DOI: 10.1007/s11010-012-1284-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Accepted: 03/02/2012] [Indexed: 11/30/2022]
Abstract
Cyclic ADP-ribose (cADPR), a metabolite of NAD(+), is known to function as a second messenger for intracellular Ca(2+) mobilization in various vertebrate and invertebrate tissues. In this study, we isolated two Xenopus laevis cDNAs (frog cd38 and cd157 cDNAs) homologous to the one encoding the human cADPR-metabolizing enzyme CD38. Frog CD38 and CD157 are 298-amino acid proteins with 35.9 and 27.2 % identity to human CD38 and CD157, respectively. Transfection of expression vectors for frog CD38 and CD157 into COS-7 cells revealed that frog CD38 had NAD(+) glycohydrolase, ADP-ribosyl cyclase (ARC), and cADPR hydrolase activities, and that frog CD157 had no enzymatic activity under physiological conditions. In addition, when recombinant CD38 and frog brain homogenate were electrophoresed on an SDS-polyacrylamide gel, ARC of the brain homogenate migrated to the same position in the gel as that of frog CD38, suggesting that frog CD38 is the major enzyme responsible for cADPR metabolism in amphibian cells. The frog cd38 gene consists of eight exons and is ubiquitously expressed in various tissues. These findings provide evidence for the existence of the CD38-cADPR signaling system in frog cells and suggest that the CD38-cADPR signaling system is conserved during vertebrate evolution.
Collapse
Affiliation(s)
- Takayuki Ikeda
- Department of Biochemistry, Kanazawa Medical University School of Medicine, 1-1 Daigaku, Uchinada, Kahoku-gun, Ishikawa 920-0293, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Ota H, Tamaki S, Itaya-Hironaka A, Yamauchi A, Sakuramoto-Tsuchida S, Morioka T, Takasawa S, Kimura H. Attenuation of glucose-induced insulin secretion by intermittent hypoxia via down-regulation of CD38. Life Sci 2011; 90:206-11. [PMID: 22154909 DOI: 10.1016/j.lfs.2011.11.011] [Citation(s) in RCA: 60] [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] [Received: 08/22/2011] [Revised: 10/29/2011] [Accepted: 11/09/2011] [Indexed: 12/17/2022]
Abstract
AIMS Sleep apnea syndrome (SAS) is characterized by recurrent episodes of oxygen desaturation during sleep, the development of daytime sleepiness, and deterioration in the quality of life. Accumulating evidence suggests the association of intermittent hypoxia (IH), a hallmark of SAS, and type 2 diabetes independently on body mass index and waist circumference. In addition to insulin resistance, the progression to type 2 diabetes is dependent on the impairment of glucose-induced insulin secretion (GIS) from pancreatic β-cells. However, the direct effects of IH on GIS are elusive. MAIN METHODS HIT-T15 hamster β-cells and isolated rat islets were exposed to 64 cycles/24 h of IH (5 min hypoxia/10 min normoxia) or normoxia for 24 h. Changes of GIS and gene expression in IH-treated β-cells were analyzed by ELISA and real-time RT-PCR, respectively. KEY FINDINGS After IH treatment, GIS both from IH-treated HIT-T15 cells and isolated rat islets were significantly attenuated. The level of insulin mRNA was unchanged by IH. The mRNA levels of glucose transporter 2 (Glut2), glucokinase (GK), sulfonylurea receptor1 (SUR1), and L-type Ca2+channel1.2 (Cav1.2) in IH-treated-islets were similar to those in normoxia-treated islets. In contrast, the mRNA level of CD38 in IH-treated islets was significantly lower than that in normoxia-treated islets. The reporter gene assay revealed that the transcription of CD38 was attenuated by IH, and the transfection of CD38 expression vector recovered the attenuation of GIS by IH. SIGNIFICANCE These results indicate that IH stress directly attenuates GIS from β-cells via the down-regulation of CD38.
Collapse
Affiliation(s)
- Hiroyo Ota
- Second Department of Internal Medicine, Nara Medical University, Kashihara 634-8521, Japan
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Suzuki H, Usui I, Kato I, Oya T, Kanatani Y, Yamazaki Y, Fujisaka S, Senda S, Ishii Y, Urakaze M, Mahmood A, Takasawa S, Okamoto H, Kobayashi M, Tobe K, Sasahara M. Deletion of platelet-derived growth factor receptor-β improves diabetic nephropathy in Ca²⁺/calmodulin-dependent protein kinase IIα (Thr286Asp) transgenic mice. Diabetologia 2011; 54:2953-62. [PMID: 21833587 DOI: 10.1007/s00125-011-2270-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Accepted: 07/05/2011] [Indexed: 01/28/2023]
Abstract
AIMS/HYPOTHESIS The activation of platelet-derived growth factor receptor-β (PDGFR-β) signalling is increased in the glomeruli and tubules of diabetic animals. In this study, we examined the role of PDGFR-β signalling during the development of diabetic nephropathy. METHODS We recently generated pancreatic beta cell-specific Ca(2+)/calmodulin-dependent protein kinase IIα (Thr286Asp) transgenic mice (CaMKIIα mice), which show very high plasma glucose levels up to 55.5 mmol/l and exhibit the features of diabetic nephropathy. These mice were crossed with conditional knockout mice in which Pdgfr-β (also known as Pdgfrb) was deleted postnatally. The effect of the deletion of the Pdgfr-β gene on diabetic nephropathy in CaMKIIα mice was evaluated at 10 and 16 weeks of age. RESULTS The plasma glucose concentrations and HbA(1c) levels were elevated in the CaMKIIα mice from 4 weeks of age. Variables indicative of diabetic nephropathy, such as an increased urinary albumin/creatinine ratio, kidney weight/body weight ratio and mesangial area/glomerular area ratio, were observed at 16 weeks of age. The postnatal deletion of the Pdgfr-β gene significantly decreased the urinary albumin/creatinine ratio and mesangial area/glomerular area ratio without affecting the plasma glucose concentration. Furthermore, the increased oxidative stress in the kidneys of the CaMKIIα mice as shown by the increased urinary 8-hydroxydeoxyguanosine (8-OHdG) excretion and the increased expression of NAD(P)H oxidase 4 (NOX4), glutathione peroxidase 1 (GPX1) and manganese superoxide dismutase (MnSOD) was decreased by Pdgfr-β gene deletion. CONCLUSIONS/INTERPRETATION The activation of PDGFR-β signalling contributes to the progress of diabetic nephropathy, with an increase in oxidative stress and mesangial expansion in CaMKIIα mice.
Collapse
Affiliation(s)
- H Suzuki
- First Department of Internal Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Naito H, Dohi Y, Zimmermann WH, Tojo T, Takasawa S, Eschenhagen T, Taniguchi S. The Effect of Mesenchymal Stem Cell Osteoblastic Differentiation on the Mechanical Properties of Engineered Bone-Like Tissue. Tissue Eng Part A 2011; 17:2321-9. [DOI: 10.1089/ten.tea.2011.0099] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Hiroshi Naito
- Department of Thoracic and Cardiovascular Surgery, Nara Medical University School of Medicine, Nara, Japan
| | - Yoshiko Dohi
- Department of Biochemistry, Nara Medical University School of Medicine, Nara, Japan
| | | | - Takashi Tojo
- Department of Thoracic and Cardiovascular Surgery, Nara Medical University School of Medicine, Nara, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University School of Medicine, Nara, Japan
| | - Thomas Eschenhagen
- Institute of Experimental and Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Shigeki Taniguchi
- Department of Thoracic and Cardiovascular Surgery, Nara Medical University School of Medicine, Nara, Japan
| |
Collapse
|
47
|
Zheng HC, Sugawara A, Okamoto H, Takasawa S, Takahashi H, Masuda S, Takano Y. Expression profile of the REG gene family in colorectal carcinoma. J Histochem Cytochem 2011; 59:106-15. [PMID: 21339177 DOI: 10.1369/jhc.2010.956961] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Regenerating (REG) gene family belongs to the calcium-dependent lectin gene superfamily and encodes small multifunctional secretory proteins, which might be involved in cell proliferation, differentiation, and carcinogenesis. To clarify REG expression profile in colorectal carcinoma (CRC), the authors examined the expression of REG Iα, Iβ, III, HIP/PAP, and REG IV by immunohistochemistry on tissue microarray. The expression of REG Iα, III, and HIP/PAP was more frequently observed in the CRCs than adjacent non-neoplastic mucosa (p < 0.001), whereas it was the converse for REG Iβ and IV (p < 0.001). The expression of REG Iα, Iβ, III, and HIP/PAP was negatively correlated with the depth of invasion of CRCs (p < 0.05). The REG Iβ and HIP/PAP were less expressed in CRCs with than without venous invasion (p < 0.05). The positive rates of REG Iα and HIP/PAP were significantly higher in CRCs without than with lymph node metastasis (p < 0.05). Mucinous carcinoma more frequently expressed REG IV protein than well- and moderately differentiated ones (p < 0.05). There was a positive relationship between REG Iα, Iβ, III, and HIP/PAP expression (p < 0.05). Survival analysis indicated the REG Iβ or HIP/PAP expression was positively linked to favorable prognosis of carcinoma patients (p < 0.05). This study indicated that aberrant REG expression might be closely linked to the pathogenesis, invasion, or lymph node metastasis of CRCs. REG Iβ and HIP/PAP could be considered reliable markers of favorable prognosis of CRC patients.
Collapse
Affiliation(s)
- Hua-chuan Zheng
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, China Medical University, Shenyang, China.
| | | | | | | | | | | | | |
Collapse
|
48
|
Yamamoto Y, Harashima A, Saito H, Tsuneyama K, Munesue S, Motoyoshi S, Han D, Watanabe T, Asano M, Takasawa S, Okamoto H, Shimura S, Karasawa T, Yonekura H, Yamamoto H. Septic Shock Is Associated with Receptor for Advanced Glycation End Products Ligation of LPS. J I 2011; 186:3248-57. [DOI: 10.4049/jimmunol.1002253] [Citation(s) in RCA: 147] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
49
|
Abe M, Toyohara T, Ishii A, Suzuki T, Noguchi N, Akiyama Y, Shiwaku HO, Nakagomi-Hagihara R, Zheng G, Shibata E, Souma T, Shindo T, Shima H, Takeuchi Y, Mishima E, Tanemoto M, Terasaki T, Onogawa T, Unno M, Ito S, Takasawa S, Abe T. The HMG-CoA reductase inhibitor pravastatin stimulates insulin secretion through organic anion transporter polypeptides. Drug Metab Pharmacokinet 2010; 25:274-82. [PMID: 20610886 DOI: 10.2133/dmpk.25.274] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor pravastatin has been reported to have a beneficial effect on reducing the new onset of diabetes as well as lowering plasma lipids. Because pravastatin is a water-soluble organic anion, it cannot easily penetrate the lipid bilayer of the cell membrane. As the precise mechanisms of the effect of pravastatin on glucose metabolism and diabetes have not been clarified, we examined the roles of the organic anion transporter family on pravastatin-treated islet and adipocyte functions. Rat oatp1/slco1a1, oatp2/slco1a4 and oatp3/slco1a5 were expressed in the pancreas, and rat oatp3/slco1a5 was also detected in rat insulinoma cell line INS-1e. Pravastatin was transported not only by oatp1/slco1a1 and oatp2/slco1a4, but also by rat oatp3/slco1a5. Pravastatin uptake into INS-1e cells was detected and this transport was inhibited by sulfobromophthalein and rifampicin, both of which are known to inhibit oatp family-mediated uptake. In addition, pravastatin enhanced the glucose-stimulated insulin secretion from INS-1e cells. When fat-loaded db/db mice were treated with pravastatin, glucose intolerance and insulin resistance were prevented. In addition, insulin secretion from isolated islets was enhanced by pravastatin. These data suggest that pravastatin has pleiotropic effects on islets through membrane transport under high fat/glucose conditions.
Collapse
Affiliation(s)
- Michiaki Abe
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-cho, Aoba-ku, Sendai, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Imaoka H, Ishihara S, Kazumori H, Kadowaki Y, Aziz MM, Rahman FB, Ose T, Fukuhara H, Takasawa S, Kinoshita Y. Exacerbation of indomethacin-induced small intestinal injuries in Reg I-knockout mice. Am J Physiol Gastrointest Liver Physiol 2010; 299:G311-9. [PMID: 20508157 DOI: 10.1152/ajpgi.00469.2009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Nonsteroidal anti-inflammatory drug (NSAID)-induced small intestinal injuries are serious clinical events and a successful therapeutic strategy is difficult. Regenerating gene (Reg) I protein functions as a regulator of cell proliferation and maintains intercellular integrity in the small intestine. The aim of this study was to evaluate the role of Reg I in NSAID-induced small intestinal injuries. First, to examine the effect of Reg I deficiency on such injuries, indomethacin, a widely used NSAID, was injected subcutaneously into 10-wk-old male Reg I-knockout (Reg I(-/-)) and wild-type (Reg I(+/+)) mice twice with an interval of 24 h, after which the mice were euthanized. Small intestinal injuries were assessed by gross findings, histopathology, and contents of IL-1beta and MPO in the experimental tissues. Next, we investigated the therapeutic potential of Reg I in indomethacin-induced small intestinal injuries. Recombinant Reg I protein (rReg I) was administered to 10-wk-old male ICR mice, then indomethacin was administered 6 h using the same protocol as noted above, after which small intestinal injuries were assessed after euthanasia. Our results showed that Reg I(-/-) mice had a greater number of severe small intestinal lesions after indomethacin administration. Histological examinations of the small intestines from those mice revealed deep ulcers with prominent inflammatory cell infiltration, whereas the mucosal content of proinflammatory agents was also significantly increased. In addition, rReg I administration inhibited indomethacin-induced small intestinal injuries in ICR mice. In conclusion, Reg I may be useful as a therapeutic agent in NSAID-induced small intestinal injuries.
Collapse
Affiliation(s)
- Hiroshi Imaoka
- Dept. of Gastroenterology and Hepatology, Shimane Univ., Izumo, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|