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KIMURA MakiInclusive Campus and Healthcare CenterAssociate Professor
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■ Paper- The condition in which the insulin secretory ability of pancreatic β-cells decreases in diabetes is extremely important, but there are currently no biomarkers that reflect pancreatic β-cell failure. Therefore, we conducted a search for biomarkers, using pancreatic β-cell-specific 3-Phosphoinositide-dependent protein kinase 1 (PDK1) knockout mice, which develop severe hyperglycemia due to a decrease in pancreatic β-cell mass without insulin resistance. The analysis was performed in young mice when metabolic abnormalities were not yet apparent. Comprehensive analysis of microRNAs contained in extracellular vesicles in the blood of these mice revealed that miR378a-3p levels were significantly lower in PDK1 knockout mice than in control mice. Furthermore, in other mouse models of diabetes, namely, db/db mice and streptozotocin-induced diabetic mice, there was an increase and decrease in miR378a-3p expression, respectively, in line with the number of β-cells. These results suggest that miR378a-3p contained in serum extracellular vesicles is a biomarker that reflects pancreatic β-cell mass before the onset of diabetes. It is hoped that miR378a-3p can be utilized to realize earlier diagnosis and treatment of diabetes.Mar. 2025, Biochemical and biophysical research communications, 750, 151367 - 151367, English, International magazineScientific journal
- In most cases, the diagnosis of diabetes in animal models is based solely on blood glucose levels. While hemoglobin A1c (HbA1c) is widely used in the diagnosis of diabetes in humans, it is rarely measured in mice in diabetes research. This is thought to be because there are no established reference values for mouse HbA1c, as well as the fact that there are very few reports on the variability and reproducibility of measurements taken using different devices. In this study, we measured HbA1c levels in diabetic mouse models using different devices based on different principles, including capillary electrophoresis, high-performance liquid chromatography, and enzymatic methods, and compared the results. A positive correlation was observed between blood glucose and HbA1c levels in all measurement methods, and high reproducibility was confirmed in the measurement of HbA1c. However, HbA1c levels measured using the enzymatic method were slightly higher than those measured using the other two methods. In addition, an examination of diabetic mice given a sodium-glucose cotransporter 2 inhibitor, which is used to treat diabetes, revealed that there was a 2-week difference in the fluctuation of mouse HbA1c levels compared with the fluctuation of blood glucose levels. Based on these results, it is thought that HbA1c can be a reliable indicator in diabetic mouse models, and it is expected to make the evaluation of abnormal glucose metabolism in mice more reliable.Jan. 2025, Experimental animals, English, Domestic magazineScientific journal
- Decreased pancreatic β-cell volume is a serious problem in patients with type 2 diabetes mellitus, and there is a need to establish appropriate treatments. Increasingly, sodium/glucose cotransporter 2 (SGLT2) inhibitors, which have a protective effect on pancreatic β-cells, are being prescribed to treat diabetes; however, the underlying mechanism is not well understood. We previously administered SGLT2 inhibitor dapagliflozin to a mouse model of type 2 diabetes and found significant changes in gene expression in the early-treated group, which led us to hypothesize that epigenetic regulation was a possible mechanism of these changes. Therefore, we performed comprehensive DNA methylation analysis by methylated DNA immunoprecipitation using isolated pancreatic islets after dapagliflozin administration to diabetic model mice. As a result, we identified 31 genes with changes in expression due to DNA methylation changes. Upon immunostaining, cystic fibrosis transmembrane conductance regulator and cadherin 24 were found to be upregulated in islets in the dapagliflozin-treated group. These molecules may contribute to the maintenance of islet morphology and insulin secretory capacity, suggesting that SGLT2 inhibitors' protective effect on pancreatic β-cells is accompanied by DNA methylation changes, and that the effect is long-term and not temporary. In future diabetes care, SGLT2 inhibitors may be expected to have positive therapeutic effects, including pancreatic β-cell protection.Sep. 2024, Biochemical and biophysical research communications, 725, 150254 - 150254, English, International magazineScientific journal
- UNLABELLED: Fixed-ratio combination injection therapy (FRC) is a fixed-ratio mixture containing basal insulin and glucagon-like peptide-1 receptor agonist (GLP-1 RA) in a single injection for the treatment of patients with type 2 diabetes. The two types of FRC products contain different concentrations and mixing ratios of basal insulin and GLP-1 RA. Both products demonstrated satisfactory blood glucose control throughout the day, with less hypoglycemia and weight gain. However, few studies have examined the differences in the actions of the two formulations. Herein, we present a case of a 71-year-old man with pancreatic diabetes and significantly impaired intrinsic insulin secretion capacity, who demonstrated a marked difference in glycemic control following treatment with two different FRC formulations. Treatment with IDegLira, an FRC product, demonstrated suboptimal glucose control in the patient. However, after a change in therapy to another FRC product, IGlarLixi, his glucose control markedly improved, even with a decrease in the injection dose. This difference could have been due to lixisenatide, a short-acting GLP-1RA contained in IGlarLixi, which exerts a postprandial hypoglycemic effect irrespective of intrinsic insulin secretion capacity. In conclusion, IGlarLixi has the potential to achieve good fasting and postprandial glucose control with a once-daily injection, even in patients with type 2 diabetes who have a reduced intrinsic insulin secretion capacity. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s13340-023-00621-5.Jul. 2023, Diabetology international, 14(3) (3), 294 - 297, English, Domestic magazine
- (一社)日本糖尿病学会, Apr. 2023, 糖尿病, 66(Suppl.1) (Suppl.1), S - 186, Japanese膵β細胞におけるmTORC1活性化は膵外分泌細胞への分化を誘導する
- (一社)日本糖尿病学会, Apr. 2023, 糖尿病, 66(Suppl.1) (Suppl.1), S - 186, Japanese膵β細胞におけるmTORC1活性化は膵外分泌細胞への分化を誘導する
- Chlorogenic Acid and Caffeine in Coffee Restore Insulin Signaling in Pancreatic Beta Cells.The incidence of type 2 diabetes is reported to be lower in frequent coffee drinkers than in non-coffee drinkers. To elucidate the mechanism by which coffee prevents the onset of type 2 diabetes, we analyzed how caffeine and chlorogenic acid, which are components of coffee, alter insulin signaling in MIN6 cells, a mouse pancreatic Β cell line. The results showed that caffeine improved insulin signaling under endoplasmic reticulum stress, and chlorogenic acid protected pancreatic Β cells by enhancing the expression of insulin receptor substrate 2 via cAMP response element-binding protein and promoting insulin signaling downstream of insulin receptor substrate 2. In addition, chlorogenic acid was a potent antioxidant for the protection of pancreatic Β cells. Furthermore, in vivo and in vitro analyses revealed that the pancreatic Β cell-protective effect of chlorogenic acid was mediated by the alleviation of endoplasmic reticulum stress. The results suggest that these components of coffee have the potential to reduce the pathogenesis of type 2 diabetes and improve pancreatic Β cell insufficiency.Mar. 2023, The Kobe journal of medical sciences, 69(1) (1), E1-E8, English, Domestic magazineScientific journal
- Eif2ak4, a susceptibility gene for type 2 diabetes, encodes GCN2, a molecule activated by amino acid deficiency. Mutations or deletions in GCN2 in pancreatic β-cells increase mTORC1 activity by decreasing Sestrin2 expression in a TSC2-independent manner. In this study, we searched for molecules downstream of GCN2 that suppress mTORC1 activity in a TSC2-dependent manner. To do so, we used a pull-down assay to identify molecules that competitively inhibit the binding of the T1462 phosphorylation site of TSC2 to 14-3-3. l-asparaginase was identified. Although l-asparaginase is frequently used as an anticancer drug for acute lymphoblastic leukemia, little is known about endogenous l-asparaginase. l-Asparaginase, which is expressed downstream of GCN2, was found to bind 14-3-3 and thereby to inhibit its binding to the T1462 phosphorylation site of TSC2 and contribute to TSC2 activation and mTORC1 inactivation upon TSC2 dephosphorylation. Further investigation of the regulation of mTORC1 activity in pancreatic β-cells by l-asparaginase should help to elucidate the mechanism of diabetes and insulin secretion failure during anticancer drug use.Feb. 2023, Biochemical and biophysical research communications, 652, 121 - 130, English, International magazineScientific journal
- Diabetes, hypertension, and dyslipidemia are obesity-related comorbidities that contribute to the development of cardiovascular disease, one of the leading causes of death. In addition to obesity, the underweight condition is a concern because it can give rise to sarcopenia, particularly after the age of 65 years. We examined the risk for diabetes, hypertension, and dyslipidemia due to obesity in individuals of this age. We retrospectively investigated the relation between obesity and its three major comorbidities in 10,852 individuals aged 65 years who underwent health checkups implemented by Kobe City between April 2017 and March 2021. The prevalence of diabetes, hypertension, and dyslipidemia with and without hyper-low-density lipoprotein-cholesterolemia was 9.7%, 41.0%, 63.8%, and 19.5%, respectively, and the prevalence of these conditions increased with increasing obesity. The risk for diabetes and hypertension was increased markedly (odds ratios of 12.95 and 19.44, respectively), and that for dyslipidemia with and without hyper-low-density lipoprotein-cholesterolemia was modestly increased (odds ratios of 2.59 and 3.65, respectively) at a BMI of ≥ 35 kg/m2 compared with normal weight. Analysis by gender revealed that the obesity-related risk for dyslipidemia with hyper-low-density lipoprotein-cholesterolemia was small compared with other comorbidities in women, while the risk for all comorbidities elevated similarly in men. Our results suggest the importance of public health intervention for obesity to suppress its comorbidities, especially diabetes and hypertension, at this age.Feb. 2023, Scientific reports, 13(1) (1), 2346 - 2346, English, International magazineScientific journal
- BACKGROUND: Bariatric surgery is an effective treatment for severe obesity and its associated medical problems. Preoperative factors that predict postoperative weight loss remain to be fully characterized, however. METHODS: Anthropometric and laboratory data were collected retrospectively for severely obese patients who underwent laparoscopic sleeve gastrectomy (LSG) between April 2016 and July 2019 at our hospital. Preoperative factors that predicted weight loss at 1 year after LSG were investigated. RESULTS: A total of 122 subjects (45 men and 77 women) underwent LSG. The mean ± SD age and body mass index at surgery were 44.4 ± 10.4 years and 40.7 ± 6.7 kg/m2. The percent total weight loss (%TWL) was 27.0 ± 8.6 among all subjects, 26.4 ± 8.0 among men, and 27.4 ± 8.9 among women, with no significant difference between the sexes. The %TWL showed a significant inverse correlation with serum cortisol level in men and with age and the visceral/subcutaneous fat area ratio in women. Multivariable regression analysis revealed the presence of type 2 diabetes and the serum cortisol concentration to be negatively associated with %TWL among all subjects and men, respectively. Receiver operating characteristic curve analysis identified an optimal cutoff of 10 µg/dL for prediction of a %TWL of ≥ 25 in men by serum cortisol level. CONCLUSIONS: Serum cortisol concentration was identified as a predictor for postoperative weight loss in men. Our results may thus help inform the decision to perform LSG or more effective surgical procedures in men with severe obesity.Jan. 2023, Obesity surgery, English, International magazineScientific journal
- Lead, Mar. 2022, 大学教育研究, (30) (30), 35 - 47Analysis of Factors Affecting SOC during Residency Training[Refereed]Research institution
- The reduction of pancreatic β cell mass is one of the key factors for the onset of type 2 diabetes. Many reports have indicated that insulin signaling is important for type 2 diabetes, but the mechanism by which insulin signaling is altered in pancreatic β cells remains unclear. This study was designed to examine the role of histone deacetylases (HDACs) in the regulation of insulin signaling in pancreatic β cells. We found that insulin signaling was downregulated by inhibition of HDAC6. HDAC6 expression was specifically observed in pancreatic β cells and was decreased in the pancreatic islets of a type 2 diabetes mouse model. When a mouse pancreatic β cell line (MIN6 cells) was treated with palmitic acid to mimic the effect of a high-fat diet on pancreatic β cells, HDAC6 was imported into the nucleus. These results suggest that HDAC6 plays an important role in the regulation of insulin signaling in pancreatic β cells. Therefore, clarifying the regulation of insulin signaling by HDAC6 may be a valuable approach for the treatment of type 2 diabetes.Jan. 2021, Biochemical and biophysical research communications, 534, 896 - 901, English, International magazineScientific journal
- EIF2AK4, which encodes the amino acid deficiency-sensing protein GCN2, has been implicated as a susceptibility gene for type 2 diabetes in the Japanese population. However, the mechanism by which GCN2 affects glucose homeostasis is unclear. Here, we show that insulin secretion is reduced in individuals harboring the risk allele of EIF2AK4 and that maintenance of GCN2-deficient mice on a high-fat diet results in a loss of pancreatic β cell mass. Our data suggest that GCN2 senses amino acid deficiency in β cells and limits signaling by mechanistic target of rapamycin complex 1 to prevent β cell failure during the consumption of a high-fat diet.May 2020, JCI insight, 5(9) (9), English, International magazine[Refereed]Scientific journal
- May 2019, J. Diab. Invest., 10(3) (3), 577 - 590, EnglishEarly administration of dapagliflozin preserves pancreatic beta cell mass through a legacy effect in type 2 diabetic mice.[Refereed]Scientific journal
- Docosahexaenoic Acid Reduces Palmitic Acid-Induced Endoplasmic Reticulum Stress in Pancreatic Β Cells.Endoplasmic reticulum (ER) stress leads to peripheral insulin resistance and the progression of pancreatic beta cell failure in type 2 diabetes. Although ER stress plays an important role in the pathogenesis of diabetes, it is indispensable for cellular activity. Therefore, when assessing the pathological significance of ER stress, it is important to monitor and quantify ER stress levels. Here, we have established a novel system to monitor ER stress levels quickly and sensitively, and using this method, we have clarified the effect of differences in glucose concentration and various fatty acids on the ER of pancreatic β cells. First, we developed a cell system that secretes Gaussia luciferase in culture medium depending on the activation of the GRP78 promoter. This system could sensitively monitor ER stress levels that could not be detected with real-time RT-PCR and immunoblotting. This system revealed that hyperglycemia does not induce unfolded protein response (UPR) in a short period of time in MIN6 cells, a mouse pancreatic β cell line. Physiological concentrations of palmitic acid, a saturated fatty acid, induced ER stress quickly, while physiological concentrations of oleic acid, an unsaturated fatty acid, did not. Docosahexaenoic acid, an n-3 unsaturated fatty acid, inhibited palmitic acid-induced ER stress. In this study, we have established a system that can sensitively detect ER stress levels of living cells in a short period of time. This system can be used to monitor the state of the ER in living cells and lead to the investigation of the significance of physiological or pathological ER stress levels.Sep. 2018, The Kobe journal of medical sciences, 64(2) (2), E43-E55 - E55, English, Domestic magazine[Refereed]Scientific journal
- Elsevier B.V., Feb. 2018, Biochemical and Biophysical Research Communications, 497(1) (1), 451 - 456, English, International magazine[Refereed]Scientific journal
- 2017, PloS one, 12(9) (9), e0184435, English, International magazine[Refereed]Scientific journal
- Jul. 2015, Proceedings of the National Academy of Sciences of the United States of America, 112(27) (27), 8332 - 7, English, International magazine[Refereed]Scientific journal
- Mar. 2015, BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 458(3) (3), 681 - 686, English, International magazine[Refereed]Scientific journal
- 2015, PloS one, 10(6) (6), e0130757, English, International magazine[Refereed]Scientific journal
- Sep. 2014, DIABETES, 63(9) (9), 2996 - 3008, English, International magazine[Refereed]Scientific journal
- Springer-Verlag Tokyo, 2014, Diabetology International, 5(1) (1), 43 - 52, English[Refereed]Scientific journal
- May 2013, DIABETOLOGIA, 56(5) (5), 1088 - 1097, English[Refereed]Scientific journal
- Oct. 2012, Journal of molecular endocrinology, 49(2) (2), 125 - 35, English, International magazine[Refereed]Scientific journal
- Aug. 2011, PLOS ONE, 6(8) (8), e23238, English[Refereed]Scientific journal
- Jan. 2010, JOURNAL OF CLINICAL INVESTIGATION, 120(1) (1), 115 - 126, English[Refereed]Scientific journal
- Dec. 2009, BIOMEDICAL RESEARCH-TOKYO, 30(6) (6), 325 - 330, EnglishEffect of intrauterine undernutrition during late gestation on pancreatic beta cell mass[Refereed]Scientific journal
- May 2008, MOLECULAR AND CELLULAR BIOLOGY, 28(9) (9), 2971 - 2979, English[Refereed]Scientific journal
- 2023, 糖尿病(Web), 66(Suppl) (Suppl)膵β細胞におけるmTORC1活性化は膵外分泌細胞への分化を誘導する
- 2023, 日本糖尿病・肥満動物学会年次学術集会プログラム・講演抄録集, 36th膵β細胞におけるmTORC1活性化が膵島可塑性に及ぼす影響の検討
- (一社)日本医学教育学会, Jul. 2022, 医学教育, 53(Suppl.) (Suppl.), 187 - 187, Japanese基本的技術トレーニング研修における初期臨床研修医に対する医療安全教育の実践
- (一社)日本医学教育学会, Jul. 2022, 医学教育, 53(Suppl.) (Suppl.), 203 - 203, Japanese臨床実習後のOSCEは卒後研修医の能力を予測しうるか 卒業就職先アンケートを用いた検討
- (NPO)日本医療マネジメント学会, Jul. 2022, 日本医療マネジメント学会雑誌, 23(Suppl,) (Suppl,), 235 - 235, Japanese
- (一社)日本糖尿病学会, Apr. 2022, 糖尿病, 65(Suppl.1) (Suppl.1), S - 148, Japanese術前の血清コルチゾール濃度は高度肥満男性における腹腔鏡下スリーブ状胃切除術後の減量効果を予測する因子である
- (一社)日本糖尿病学会, Apr. 2022, 糖尿病, 65(Suppl.1) (Suppl.1), S - 206, Japanese65歳の健康診断受診者における肥満度と肥満に合併する健康障害の検討
- (一社)日本糖尿病学会, Apr. 2022, 糖尿病, 65(Suppl.1) (Suppl.1), S - 217, Japanese膵β細胞におけるmTORC1恒常的活性化と膵島可塑性の関連についての検討
- (一社)日本医学教育学会, Jul. 2021, 医学教育, 52(Suppl.) (Suppl.), 197 - 197, Japanese初期臨床研修1年経過前後におけるSOC推移とその関連因子に関する検討
- (公社)日本小児科学会, Feb. 2021, 日本小児科学会雑誌, 125(2) (2), 257 - 257, Japanese神戸大学医学部附属病院研修医を対象とした新生児科に関するアンケート調査
- (一社)日本医学教育学会, Jul. 2020, 医学教育, 51(Suppl.) (Suppl.), 105 - 105, Japanese
- (一社)日本医学教育学会, Jul. 2020, 医学教育, 51(Suppl.) (Suppl.), 143 - 143, Japanese
- (一社)日本医学教育学会, Jul. 2020, 医学教育, 51(Suppl.) (Suppl.), 226 - 226, Japanese
- 日本臨床分子医学会, Apr. 2020, 日本臨床分子医学会学術総会プログラム・抄録集, 57回, 76 - 76, JapaneseCK2活性化は膵β細胞において小胞体ストレスを改善する
- (一社)日本医学教育学会, Jul. 2019, 医学教育, 50(Suppl.) (Suppl.), 122 - 122, Japanese神戸大学医学部医学科における男女共同参画講義の5年間の歩み
- (一社)日本医学教育学会, Jul. 2019, 医学教育, 50(Suppl.) (Suppl.), 154 - 154, Japanese新規採用初期臨床研修医を対象とした基本的技術トレーニング研修の取り組み
- 日本臨床分子医学会, Apr. 2019, 日本臨床分子医学会学術総会プログラム・抄録集, 56回, 65 - 65, Japanese膵β細胞の小胞体ストレス誘導性アポトーシスにおけるCK2βの役割
- (一社)日本糖尿病学会, Apr. 2019, 糖尿病, 62(Suppl.1) (Suppl.1), S - 257, Japanese膵β細胞特異的TSC2ノックアウトマウスにおける膵β細胞不全発症機序の解明
- (一社)日本医学教育学会, Jul. 2018, 医学教育, 49(Suppl.) (Suppl.), 236 - 236, Japanese初期臨床研修医を対象としたSOC(Sense of Coherence)によるレジリエンス測定とストレス対処能力自己評価
- (一社)日本医学教育学会, Jul. 2018, 医学教育, 49(Suppl.) (Suppl.), 237 - 237, Japanese初期臨床研修における復職支援「Back-on-trackプログラム」の実践と課題
- (一社)日本内分泌学会, Apr. 2018, 日本内分泌学会雑誌, 94(1) (1), 323 - 323, Japanese
- (一社)日本糖尿病学会, Apr. 2018, 糖尿病, 61(Suppl.1) (Suppl.1), S - 133, Japanese2型糖尿病に対する新規分子標的治療薬の確立
- (一社)日本糖尿病学会, Apr. 2018, 糖尿病, 61(Suppl.1) (Suppl.1), S - 261, Japanese膵β細胞の小胞体ストレス誘導性アポトーシスにおけるCK2βの役割
- (一社)日本糖尿病学会, Apr. 2018, 糖尿病, 61(Suppl.1) (Suppl.1), S - 386, JapaneseヒトiPS細胞を用いた膵内分泌細胞への分化誘導
- 生命科学系学会合同年次大会運営事務局, Dec. 2017, 生命科学系学会合同年次大会, 2017年度, [1P - 1157], Japanese膵β細胞の小胞体ストレス誘導性アポトーシスにおけるCK2βの役割
- 生命科学系学会合同年次大会運営事務局, Dec. 2017, 生命科学系学会合同年次大会, 2017年度, [2P - 0995], Japanese高脂肪食負荷GCN2欠損マウスの膵島におけるmTORC1シグナル調節機構の解明
- 生命科学系学会合同年次大会運営事務局, Dec. 2017, 生命科学系学会合同年次大会, 2017年度, [3P - 0838], JapaneseヒトiPS細胞を用いた膵内分泌細胞への分化誘導法の確立
- (一社)日本糖尿病学会, Apr. 2017, 糖尿病, 60(Suppl.1) (Suppl.1), S - 464, Japanese膵β細胞の小胞体ストレス誘導性アポトーシスにおけるCK2βの役割
- (一社)日本糖尿病学会, Apr. 2017, 糖尿病, 60(Suppl.1) (Suppl.1), S - 464, Japanese脂肪酸が膵β細胞の小胞体に及ぼす影響
- (一社)日本糖尿病学会, Apr. 2017, 糖尿病, 60(Suppl.1) (Suppl.1), S - 465, JapaneseヒトiPS細胞を用いた2型糖尿病発症機序の解明
- (一社)日本内分泌学会, Apr. 2016, 日本内分泌学会雑誌, 92(1) (1), 242 - 242, Japanese
- (一社)日本糖尿病学会, Apr. 2016, 糖尿病, 59(Suppl.1) (Suppl.1), S - 158, Japanese膵β細胞不全関連分子CEBP/βの安定化に対するcasein kinase 2の役割
- (一社)日本糖尿病学会, Apr. 2016, 糖尿病, 59(Suppl.1) (Suppl.1), S - 353, Japanese生物発光イメージング法による生存細胞内小胞体ストレスの定量化
- (公社)日本生化学会, Dec. 2015, 日本生化学会大会・日本分子生物学会年会合同大会講演要旨集, 88回・38回, [2P1230] - [2P1230], JapaneseC/EBPβの蛋白安定化に関与する新規リン酸化部位の同定
- (公社)日本生化学会, Dec. 2015, 日本生化学会大会・日本分子生物学会年会合同大会講演要旨集, 88回・38回, [4T特L - 08(3P1199)], Japanese膵β細胞不全関連分子CEBP/βの安定化に対するcasein kinase βの役割
- Sep. 2015, DIABETOLOGIA, 58, S240 - S240, EnglishGCN2, a type 2 diabetes mellitus susceptibility gene, is associated with the regulation of pancreatic beta cell massSummary international conference
- Jun. 2015, DIABETES, 64, A599 - A599, EnglishGCN2, a Type 2 Diabetes Mellitus Susceptibility Gene, Is Associated with the Regulation of Pancreatic beta-Cell MassSummary international conference
- Jun. 2015, DIABETES, 64, A578 - A578, EnglishReduction in Pancreatic beta-Cell Mass Caused by Enhanced Expression of Cdkn1c via Interaction between C/EBP beta and Epigenetic ControlSummary international conference
- (一社)日本内分泌学会, Apr. 2015, 日本内分泌学会雑誌, 91(1) (1), 274 - 274, Japanese
- (一社)日本内分泌学会, Apr. 2015, 日本内分泌学会雑誌, 91(1) (1), 318 - 318, Japanese
- (一社)日本内分泌学会, Apr. 2015, 日本内分泌学会雑誌, 91(1) (1), 319 - 319, Japanese
- (一社)日本内分泌学会, Apr. 2015, 日本内分泌学会雑誌, 91(1) (1), 352 - 352, Japanese
- (一社)日本糖尿病学会, Apr. 2015, 糖尿病, 58(Suppl.1) (Suppl.1), S - 149, Japanese膵β細胞不全関連因子C/EBPβの発現制御機構の解明
- (一社)日本糖尿病学会, Apr. 2015, 糖尿病, 58(Suppl.1) (Suppl.1), S - 262, Japanese膵β細胞におけるp38経路の活性化は膵島の慢性炎症を惹起することにより膵β細胞不全の病態形成に関与する
- (一社)日本糖尿病学会, Apr. 2015, 糖尿病, 58(Suppl.1) (Suppl.1), S - 263, Japanese膵β細胞における細胞周期調節因子p57の機能解析
- (一社)日本糖尿病学会, Apr. 2015, 糖尿病, 58(Suppl.1) (Suppl.1), S - 443, Japaneseヒストン脱アセチル化酵素(HDACs)による膵β細胞量調節機構の解析
- Blackwell Publishing, Mar. 2015, Diabetes : a journal of the American Diabetes Association, 8(2) (2), 25 - 37, JapanesePancreatic β-Cell Failure Mediated by mTORC1 Hyperactivity and Autophagic Impairment
- (一社)日本内分泌学会, Apr. 2014, 日本内分泌学会雑誌, 90(1) (1), 252 - 252, Japanese
- (一社)日本糖尿病学会, Apr. 2014, 糖尿病, 57(Suppl.1) (Suppl.1), S - 263, JapaneseAMPK活性依存的なC/EBPβの発現調節による膵β細胞量制御機構
- 日本臨床分子医学会, Apr. 2014, 日本臨床分子医学会学術総会プログラム・抄録集, 51回, 78 - 78, Japanese2型糖尿病感受性遺伝子GCN2は膵β細胞量の調節に関与する
- (一社)日本糖尿病学会, Apr. 2013, 糖尿病, 56(Suppl.1) (Suppl.1), S - 188, JapaneseDPP4阻害薬MK-626が膵β細胞特異mTORC1活性亢進モデルマウスに及ぼす影響
- (一社)日本内科学会, Feb. 2013, 日本内科学会雑誌, 102(Suppl.) (Suppl.), 214 - 214, Japaneseインスリノーマにおけるインスリン分泌特性と遺伝子発現の解析
- 2013, 臨床病理, 61膵β細胞増殖機構におけるエピジェネティクス修飾の解析
- 2013, 糖尿病, 56(Supplement 1) (Supplement 1)膵β細胞特異的C/EBPβトランスジェニックマウスに対するビルダグリプチンとメトホルミン併用による膵β細胞保護作用
- (一社)日本糖尿病学会, 2013, 糖尿病, 56(Supplement 1) (Supplement 1), S - 141, Japanese2型糖尿病感受性遺伝子GCN2は膵β細胞量の調節に関与する
- (一社)日本糖尿病学会, 2013, 日本分子生物学会年会プログラム・要旨集(Web), 36th(Suppl.1) (Suppl.1), S - 142, Japanese膵β細胞のKcnq1遺伝子領域におけるエピジェネティクス制御機構の解析
- Oct. 2012, DIABETOLOGIA, 55, S222 - S223, EnglishPancreatic beta cell failure mediated by mTORC1 hyperactivity and autophagic impairmentSummary international conference
- (一社)日本糖尿病学会, Apr. 2012, 糖尿病, 55(Suppl.1) (Suppl.1), S - 298, Japaneseインスリンシグナルが低出生体重モデルマウスの膵β細胞量調節に与える影響
- (一社)日本糖尿病学会, Apr. 2012, 糖尿病, 55(Suppl.1) (Suppl.1), S - 298, Japanese膵β細胞特異的C/EBPβトランスジェニックマウスに対するビルダグリプチンの膵β細胞保護効果に関する検討
- (一社)日本糖尿病学会, Apr. 2012, 糖尿病, 55(Suppl.1) (Suppl.1), S - 298, Japanese2型糖尿病発症におけるeIF2αキナーゼGCN2の機能解析
- 2012, 日本分子生物学会年会プログラム・要旨集(Web), 35th2型糖尿病候補遺伝子Kcnq1遺伝子領域が膵β細胞に及ぼす影響の解析
- 2012, 日本糖尿病・肥満動物学会年次学術集会プログラム・講演抄録集, 26th2型糖尿病候補遺伝子Kcnq1遺伝子領域が膵β細胞に及ぼす影響の解析
- (一社)日本糖尿病学会, Apr. 2011, 糖尿病, 54(Suppl.1) (Suppl.1), S - 231, Japanese低出生体重モデルマウスにおける膵β細胞量調節機構の検討
- (一社)日本内分泌学会, Apr. 2011, 日本内分泌学会雑誌, 87(1) (1), 279 - 279, Japanese膵β細胞におけるmTORC1シグナルはミトコンドリア数増加を介してインスリン分泌を亢進させる
- 2011, 日本内分泌学会雑誌, 87(1) (1)2型糖尿病候補遺伝子KCNQ1の膵β細胞に及ぼす役割の検討
- 2011, 日本分子生物学会年会プログラム・要旨集(Web), 34th低出生体重モデルマウスにおける膵β細胞量調節機構の検討
- 2011, 肥満研究, 17(Supplement) (Supplement)低出生体重モデルマウスにおける膵β細胞量調節機構の検討
- 2011, 肥満研究, 17(Supplement) (Supplement)2型糖尿病関連遺伝子Kcnq1領域の膵β細胞に及ぼす影響の検討
- 2011, 糖尿病, 54(Supplement 1) (Supplement 1)2型糖尿病候補遺伝子Kcnq1遺伝子領域が膵β細胞に及ぼす影響の解析
- 2011, 糖尿病, 54(Supplement 1) (Supplement 1)膵β細胞特異的C/EBPβトランスジェニックマウスを用いた膵β細胞不全に対するDPP-4阻害剤(ビルダグリプチン)の効果の検討
- 2011, 糖尿病, 54(Supplement 1) (Supplement 1)膵β細胞におけるelF2αキナーゼGCN2の機能解析
- Jun. 2010, DIABETES, 59, A91 - A91, EnglishAblation of TSC2 Enhances Mitochondrial Function Via Activation of mTORC1 in beta CellsSummary international conference
- (一社)日本糖尿病学会, Apr. 2010, 糖尿病, 53(Suppl.1) (Suppl.1), S - 93, Japanese2型糖尿病候補遺伝子KCNQ1の膵β細胞に及ぼす役割の検討
- (一社)日本糖尿病学会, Apr. 2010, 糖尿病, 53(Suppl.1) (Suppl.1), S - 156, Japanese膵β細胞におけるmTORシグナルとミトコンドリア機能の検討
- Mar. 2010, ENDOCRINE JOURNAL, 57, S386 - S386, EnglishRac1 regulates glucose-induced insulin secretion through the modulation of cytoskeletal organization in beta cellsSummary international conference
- 2010, 月刊内分泌・糖尿病・代謝内科, 30(1) (1)膵β細胞増殖を調節するシグナル インスリンシグナル 2)PDK1/TSC2
- 2010, ホルモンと臨床, 58(5) (5)インスリン抵抗性 臓器インスリン抵抗性 膵β細胞でのインスリン作用とその障害
- 2010, 生化学2型糖尿病候補遺伝子KCNQ1の膵β細胞に及ぼす役割の検討
- Jun. 2009, DIABETES, 58, A2 - A2, EnglishEffect of the Constitutive Activation of mTORC1 on Mitochondrial Function in Pancreatic beta CellsSummary international conference
- (一社)日本内分泌学会, Apr. 2009, 日本内分泌学会雑誌, 85(1) (1), 274 - 274, Japanese膵β細胞における低分子量GタンパクRac1の機能解析
- (一社)日本糖尿病学会, Apr. 2009, 糖尿病, 52(Suppl.1) (Suppl.1), S - 249, Japanese2型糖尿病候補遺伝子KCNQ1の膵β細胞に及ぼす役割の検討
- (一社)日本糖尿病学会, Apr. 2009, 糖尿病, 52(Suppl.1) (Suppl.1), S - 217, Japanese膵β細胞におけるmTORシグナルとミトコンドリア機能の検討
- 日本臨床分子医学会, Apr. 2009, 日本臨床分子医学会学術総会プログラム・抄録集, 46回, 73 - 73, Japanese膵β細胞におけるmTORシグナルとミトコンドリア機能の検討
- 日本臨床分子医学会, Jul. 2008, 日本臨床分子医学会学術総会プログラム・抄録集, 45回(Supplement 1) (Supplement 1), 63 - 63, Japanese膵β細胞における低分子量GタンパクRac1の機能解析
- Jun. 2008, DIABETES, 57, A55 - A55, EnglishRac1 regulates glucose-induced insulin secretion through modulation of cytoskeletal organization in beta cellsSummary international conference
- (一社)日本糖尿病学会, Apr. 2008, 糖尿病, 51(Suppl.1) (Suppl.1), S - 208, Japanese膵β細胞における低分子量GタンパクRac1の機能解析
- (一社)日本糖尿病学会, Apr. 2008, 糖尿病, 51(Suppl.1) (Suppl.1), S - 318, JapanesemTORシグナルによる膵β細胞数・サイズ調節機構の解明
- 2008, 生体の科学, 59(6) (6)mTORをめぐるシグナルタンパク TSC2ノックアウトマウス
- 2008, Gastroenterological Endoscopy, 50(9) (9)GASTRIC VARICES BLEEDING CAUSED BY SPLENIC THROMBOSIS COMPLICATING HYPERLIPIDEMIC PANCREATITIS-REPORT OF A CASE
- 2007, 診断病理, 24(4) (4)粘液腫様変化を呈した胃gastrointestinal stromal tumor(GIST)の1例
- 2007, 癌と化学療法, 34(13) (13)Complete Histological Response in Gastric Cancer Stage IV after Neoadjuvant Chemotherapy Including S-1 Combined with CDDP-Report of a Case
- 2007, Gastroenterological Endoscopy, 49(9) (9)ANORECTAL MALIGNANT MALANOMA LIMITED TO THE MUCOSA, REPORT OF A CASE
- Joint work, 226 - 229, (株)メディカ出版, Mar. 2021【ダウンロードで今すぐ使える!初診・再診・重症化予防の3ステップ 最高で最強の糖尿病患者説明シート57】(第5章)薬物療法の患者説明シート(ステップ2) 低血糖がこわいあなたへ
- Joint work, 10 - 15, 日本サルコペニア・フレイル学会雑誌, Jun. 2020【サルコペニア肥満】サルコペニア肥満とobesity paradox
- Joint work, 88 - 94, 月刊糖尿病, Feb. 2015【糖尿病治療の経口薬up to date】これらの薬剤のみで不十分な際に、相乗効果を期待して加える薬剤は、その理由は? SU薬
- Joint work, 395 - 403, ホルモンと臨床, May 2010【インスリン抵抗性】臓器インスリン抵抗性 膵β細胞でのインスリン作用とその障害
- Joint work, 15-24, 内分泌・糖尿病・代謝内科, Jan. 2010【膵β細胞増殖を調節するシグナル】インスリンシグナル PDK1/TSC2
- Joint work, 490 - 496, 生体の科学, Dec. 2008【mTORをめぐるシグナルタンパク】TSC2ノックアウトマウス
- 第65回日本糖尿病学会年次学術集会, 2022膵β細胞におけるmTOR;恒常的活性化と膵島可塑性の関連についての検討
- 第54回医学教育学会大会, 2022臨床実習後のOSCEは卒後研修医の能力を予測しうるか 卒業就職先アンケートを用いた検討
- 第54回医学教育学会大会, 2022基本的技術トレーニング研修における初期臨床研修医に対する医療安全教育の実践
- 第24回日本医療マネジメント学会学総会, 2022基本的技術トレーニング研修による初期臨床研修医に対する医療安全教育の実践
- 第53回医学教育学会大会, 2021初期臨床研修1年経過前後におけるSOC推移とその関連因子に関する検討
- 第52回医学教育学会大会初期臨床研修医のレジリエンスに影響を及ぼす要因に関する検討
- 第57回日本臨床分子医学会学術総会, 2020CK2活性化は膵β細胞において小胞体ストレスを改善する
- 第52回医学教育学会大会, 2020初期研修医の患者把握能力向上を目的としたTime-dependent Problem Listの有用性の更なる検討
- 第52回医学教育学会大会, 2020白衣授与式におけるグループワークの試み
- 第51回医学教育学会大会, 2019新規採用初期臨床研修医を対象とした基本的技術トレーニング研修の取り組み
- 第62回日本糖尿病学会年次学術集会, 2019膵β細胞特異的TSC2ノックアウトマウスにおける膵β細胞不全発症機序の解明
- 第51回医学教育学会大会, 2019神戸大学医学部医学科における男女共同参画講義の5年間の歩み
- 第56回日本臨床分子医学会学術総会, 2019膵β細胞の小胞体ストレス誘導性アポトーシスにおけるCK2βの役割
- 日本分子生物学会年会, Nov. 2018, Japanese, 横浜, Domestic conference膵β細胞特異的PDK1ノックアウトマウスにおける血糖値推移とβ細胞量の検討Poster presentation
- 第41回日本分子生物学会年会, Nov. 2018, Japanese, 横浜, Domestic conference膵β細胞特異的PDK1ノックアウトマウスにおける血糖値推移とβ細胞量の検討Poster presentation
- 日本分子生物学会年会, Nov. 2018, Japanese, 横浜, Domestic conference膵β細胞の小胞体ストレス誘導性アポトーシスにおけるCK2の役割Poster presentation
- 第41回日本分子生物学会年会, Nov. 2018, Japanese, 横浜, Domestic conference膵β細胞の小胞体ストレス誘導性アポトーシスにおけるCK2の役割Poster presentation
- 日本分子生物学会年会, Nov. 2018, Japanese, 横浜, Domestic conference膵β細胞のUnfolded Protein ResponseにおけるCK2の役割Poster presentation
- 第41回日本分子生物学会年会, Nov. 2018, Japanese, 横浜, Domestic conference膵β細胞のUnfolded Protein ResponseにおけるCK2の役割Poster presentation
- 日本分子生物学会年会, Nov. 2018, Japanese, 横浜, Domestic conference膵β細胞におけるGCN2/asparaginase/mTORC1シグナルの同定Poster presentation
- 第41回日本分子生物学会年会, Nov. 2018, Japanese, 横浜, Domestic conference膵β細胞におけるGCN2/asparaginase/mTORC1シグナルの同定Poster presentation
- 第61回日本糖尿病学会年次学術集会, May 2018, Japanese, 東京, Domestic conferenceヒトips細胞を用いた膵内分泌細胞への分化誘導Others
- 日本内分泌学会, Apr. 2018, Japanese, 宮崎, Domestic conference2型糖尿病感受性遺伝子GCN2はSestrin2を介して膵β細胞量の調節に関与するOral presentation
- 第91回日本内分泌学会学術総会, Apr. 2018, Japanese, 宮崎, Domestic conference2型糖尿病感受性遺伝子GCN2はSestrin2を介して膵β細胞量の調節に関与するOral presentation
- 第50回医学教育学会大会, 2018初期臨床研修における復職支援「Back-on-trackプログラム」の実践と課題
- 第50回医学教育学会大会, 2018初期臨床研修医を対象としたSOC(Sense of Coherence)によるレジリエンス測定とストレス対処能力自己評価
- 第40回日本分子生物学会年会, Dec. 2017, Japanese, 神戸, Domestic conference膵β細胞の小胞体ストレス誘導性アポトーシスにおけるCK2βの役割Oral presentation
- 第40回日本分子生物学会年会, Dec. 2017, Japanese, 神戸, Domestic conference高脂肪食負荷GCN2欠損マウスの膵島におけるmTORC1シグナル調節機構の解明Oral presentation
- 第40回日本分子生物学会年会, Dec. 2017, Japanese, 神戸, Domestic conferenceヒトiPS細胞を用いた膵内分泌細胞への分化誘導法の確立Poster presentation
- 第60回日本糖尿病学会年次学術集会, May 2017, Japanese, 名古屋, Domestic conference膵β細胞の小胞体ストレス誘導性アポトーシスにおけるCK2βの役割Oral presentation
- 第60回日本糖尿病学会年次学術集会, May 2017, Japanese, 名古屋, Domestic conference脂肪酸が膵β細胞の小胞体に及ぼす影響Poster presentation
- 第60回日本糖尿病学会年次学術集会, May 2017, Japanese, 名古屋, Domestic conferenceヒトIps細胞を用いた2型糖尿病発症機序の解明Poster presentation
- THE JAPAN SOCIETY FOR MEDICAL EDUCATION
- The Japan Endocrine Society
- THE JAPAN DIABETES SOCIETY
- THE JAPANESE SOCIETY OF INTERNAL MEDICINE
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2023 - 31 Mar. 2026Elucidation of the pathogenic mechanism of de-differentiation into pancreatic adenocytes in diabetic pancreatic beta cells.
- 日本学術振興会, 科学研究費助成事業 基盤研究(C), 基盤研究(C), 神戸大学, 01 Apr. 2020 - 31 Mar. 2023日本人2型糖尿病感受性遺伝子GCN2が膵β細胞機能に及ぼす影響に関する検討2型糖尿病の発症・進展には、膵β細胞の質的異常のみならず、膵β細胞量調節機構の異常の関与が明らかとなっている。ヒト被験者における2型糖尿病に関連するGCN2のSNP多型と代謝パラメータとの関係を評価し、リスク対立遺伝子を有する被験者では75gOGTT試験ならびにインスリンクランプ試験にてインスリン分泌が減少していることを見出した。高脂肪食負荷全身性GCN2ノックアウトマウスが耐糖能異常および膵β細胞量減少をきたすこと、およびβ細胞特異的GCN2ノックアウトマウスは高脂肪食負荷後の耐糖能異常および膵β細胞量減少を認めることを既に確認している。GCN2の機能不全が膵β細胞のインスリン分泌能に影響を与えるメカニズムを解明することが本研究の目的である。 当該年度高脂肪食負荷全身性GCN2ノックアウトマウスの膵島およびGCN2ノックダウンINS-1細胞においてSestrin2の発現が低下していることが明らかとなった。このSestrin2がmTORC1活性をネガティブコントロールしていることが培養細胞において確認済である。我々は、mTORC1活性調節に重要なTSC2/14-3-3結合に干渉しうる分子を同定するため、アミノ酸欠損下で培養したコントロールINS-1細胞とGCN2ノックダウンINS-1細胞においてプロテオーム解析を行った。4つの候補分子の中から、L-asparaginaseが糖負荷によりMIN-6細胞および高脂肪食負荷マウスにおいて発現が上昇することを見出した。ここまでの結果において、高脂肪食負荷において、インスリン需要が増大し、膵β細胞におけるインスリン合成が亢進しアミノ酸濃度が減少することにより、GCN2のリン酸化が惹起され、mTORC1活性の調整がSestrin2やL-asparaginaseを介して行われる新たなメカニズムの存在が示唆された。
- 学術研究助成基金助成金/基盤研究(C), Apr. 2016 - Mar. 2019, Principal investigatorCompetitive research funding
- 学術研究助成基金助成金/若手研究(B), Apr. 2014 - Mar. 2016, Principal investigator高脂肪食による糖尿病発症機序における細胞内アミノ酸濃度センサーGCN2の役割Competitive research funding
- ダノン学術研究助成金, Apr. 2013 - Mar. 2014, Principal investigator妊娠後期低栄養が胎児の膵β細胞量に及ぼす影響に関する検討Competitive research funding
- 学術研究助成基金助成金/若手研究(B), Apr. 2012 - Mar. 2014, Principal investigator膵β細胞機能調節に関するeIF2αキナーゼGCN2の機能解析Competitive research funding