The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
Skeletal Muscle FOXO1 (FKHR) Transgenic Mice Have Less Skeletal Muscle Mass, Down-regulated Type I (Slow Twitch/Red Muscle) Fiber Genes, and Impaired Glycemic Control
Open accessAbstract
FOXO1, a member of the FOXO forkhead type transcription factors, is markedly up-regulated in skeletal muscle in energy-deprived states such as fasting and severe diabetes, but its functions in skeletal muscle have remained poorly understood. In this study, we created transgenic mice specifically overexpressing FOXO1 in skeletal muscle. These mice weighed less than the wild-type control mice, had a reduced skeletal muscle mass, and the muscle was paler in color. Microarray analysis revealed that the expression of many genes related to the structural proteins of type I muscles (slow twitch, red muscle) was decreased. Histological analyses showed a marked decrease in size of both type I and type II fibers and a significant decrease in the number of type I fibers in the skeletal muscle of FOXO1 mice. Enhanced gene expression of a lysosomal proteinase, cathepsin L, which is known to be up-regulated during skeletal muscle atrophy, suggested increased protein degradation in the skeletal muscle of FOXO1 mice. Running wheel activity (spontaneous locomotive activity) was significantly reduced in FOXO1 mice compared with control mice. Moreover, the FOXO1 mice showed impaired glycemic control after oral glucose and intraperitoneal insulin administration. These results suggest that FOXO1 negatively regulates skeletal muscle mass and type I fiber gene expression and leads to impaired skeletal muscle function. Activation of FOXO1 may be involved in the pathogenesis of sarcopenia, the age-related decline in muscle mass in humans, which leads to obesity and diabetes.
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Transcriptional co-activator PGC-1α drives the formation of slow-twitch muscle fibres
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Forkhead transcription factor FOXO3a protects quiescent cells from oxidative stress
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Multiple types of skeletal muscle atrophy involve a common program of changes in gene expression
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Insulin-regulated hepatic gluconeogenesis through FOXO1–PGC-1α interaction
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Self-citation
Cited by
Fiber Types in Mammalian Skeletal Muscles
Schiaffino, S., & Reggiani, C. (2011) · Physiological Reviews · doi:10.1152/physrev.00031.2010 · Cited by 3,022
Mechanisms regulating skeletal muscle growth and atrophy
Schiaffino, S., Dyar, K. A., Ciciliot, S., Blaauw, B., & Sandri, M. (2013) · The FEBS Journal · doi:10.1111/febs.12253 · Cited by 1,492
Cellular and molecular mechanisms of muscle atrophy
Bonaldo, P., & Sandri, M. (2013) · Disease Models & Mechanisms · doi:10.1242/dmm.010389 · Cited by 1,284
Skeletal muscle hypertrophy and atrophy signaling pathways
Glass, D. J. (2005) · The International Journal of Biochemistry & Cell Biology · doi:10.1016/j.biocel.2005.04.018 · Cited by 1,106
Regulation of skeletal muscle growth by the IGF1-Akt/PKB pathway: insights from genetic models
Schiaffino, S., & Mammucari, C. (2011) · Skeletal Muscle · doi:10.1186/2044-5040-1-4 · Cited by 816
“Mice overexpressing FoxO1 under a musclespecific promoter have muscle atrophy and increased levels of the lysosomal protease cathepsin L [ 90 ].”
Background
Metadata
- Authors
- Kamei, Y., Miura, S., Suzuki, M., Kai, Y., Mizukami, J., Taniguchi, T., Mochida, K., Hata, T., Matsuda, J., Aburatani, H., Nishino, I., & Ezaki, O.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 2004-09
- Volume
- 279
- Issue
- 39
- Pages
- 41114-41123
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W2164713351
- Cited by
- 576
- References
- 11
- FWCI
- 6.67
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- CoChat. (2026). Citation check: Skeletal Muscle FOXO1 (FKHR) Transgenic Mice Have Less Skeletal Muscle Mass, Down-regulated Type I (Slow Twitch/Red Muscle) Fiber Genes, and Impaired Glycemic Control. https://app.cochat.ai/papers/10.1074/jbc.m400674200
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- Kamei, Y., Miura, S., Suzuki, M., Kai, Y., Mizukami, J., Taniguchi, T., Mochida, K., Hata, T., Matsuda, J., Aburatani, H., Nishino, I., & Ezaki, O. (2004). Skeletal Muscle FOXO1 (FKHR) Transgenic Mice Have Less Skeletal Muscle Mass, Down-regulated Type I (Slow Twitch/Red Muscle) Fiber Genes, and Impaired Glycemic Control. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m400674200
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