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Nakamura H, Matoba S, Iwai-Kanai E, Kimata M, Hoshino A, Nakaoka M, Katamura M, Okawa Y, Ariyoshi M, Mita Y, Ikeda K, Okigaki M, Adachi S, Tanaka H, Takamatsu T, Matsubara H. p53 Promotes Cardiac Dysfunction in Diabetic Mellitus Caused by Excessive Mitochondrial Respiration-Mediated Reactive Oxygen Species Generation and Lipid Accumulation. Circ Heart Fail 2012; 5:106-15. [DOI: 10.1161/circheartfailure.111.961565] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Background—
Diabetic cardiomyopathy is characterized by energetic dysregulation caused by glucotoxicity, lipotoxicity, and mitochondrial alterations. p53 and its downstream mitochondrial assembly protein, synthesis of cytochrome c oxidase 2 (SCO2), are important regulators of mitochondrial respiration, whereas the involvement in diabetic cardiomyopathy remains to be determined.
Methods and Results—
The role of p53 and SCO2 in energy metabolism was examined in both type I (streptozotocin [STZ] administration) and type II diabetic (
db/db
) mice. Cardiac expressions of p53 and SCO2 in 4-week STZ diabetic mice were upregulated (185% and 152% versus controls, respectively,
P
<0.01), with a marked decrease in cardiac performance. Mitochondrial oxygen consumption was increased (136% versus control,
P
<0.01) in parallel with augmentation of mitochondrial cytochrome c oxidase (complex IV) activity. Reactive oxygen species (ROS)-damaged myocytes and lipid accumulation were increased in association with membrane-localization of fatty acid translocase protein FAT/CD36. Antioxidant tempol reduced the increased expressions of p53 and SCO2 in STZ-diabetic hearts and normalized alterations in mitochondrial oxygen consumption, lipid accumulation, and cardiac dysfunction. Similar results were observed in
db/db
mice, whereas in p53-deficient or SCO2-deficient diabetic mice, the cardiac and metabolic abnormalities were prevented. Overexpression of SCO2 in cardiac myocytes increased mitochondrial ROS and fatty acid accumulation, whereas knockdown of SCO2 ameliorated them.
Conclusions—
Myocardial p53/SCO2 signal is activated by diabetes-mediated ROS generation to increase mitochondrial oxygen consumption, resulting in excessive generation of mitochondria-derived ROS and lipid accumulation in association with cardiac dysfunction.
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Affiliation(s)
- Hideo Nakamura
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Satoaki Matoba
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Eri Iwai-Kanai
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Masaki Kimata
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Atsushi Hoshino
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Mikihiko Nakaoka
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Maki Katamura
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Yoshifumi Okawa
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Makoto Ariyoshi
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Yuichiro Mita
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Koji Ikeda
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Mitsuhiko Okigaki
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Souichi Adachi
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Hideo Tanaka
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Tetsuro Takamatsu
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
| | - Hiroaki Matsubara
- From the Department of Cardiovascular Medicine, Kyoto Prefectural University School of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan (H.N., S.M., E.I.-K., M. Kimata, A.H., M. Katamura, Y.O., M.A., Y.M., K.I., M.O., H.M.); the Department of Cardiovascular Medicine, Meiji University of Integrative Medicine, Hiyoshi-cho, Nantan-shi, Kyoto, Japan (E.I.-K.); the Department of Pediatrics, Graduate School of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan (S.S.); and the
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