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Fibroblast growth factor 21: a regulator of metabolic disease and health span
Open accessAbstract
Fibroblast growth factor 21 (FGF21) is a potent endocrine regulator with physiological effects on glucose and lipid metabolism and thus garners much attention for its translational potential for the management of obesity and related metabolic syndromes. FGF21 is mainly expressed in several metabolically active tissue organs, such as the liver, adipose tissue, skeletal muscle, and pancreas, with profound effects and therapeutic relevance. Emerging experimental and clinical data point to the demonstrated metabolic benefits of FGF21, which include, but are not limited to, weight loss, glucose and lipid metabolism, and insulin sensitivity. In addition, FGF21 also acts directly through its coreceptor β-klotho in the brain to alter light-dark cycle activity. In this review, we critically appraise current advances in understanding the physiological actions of FGF21 and its role as a biomarker of various metabolic diseases, especially type 2 diabetes mellitus. We also discuss the potentially exciting role of FGF21 in improving our health and prolonging our life span. This information will provide a fuller understanding for further research into FGF21, as well as providing a scientific basis for potentially establishing health care guidelines for this promising molecule.
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“Several findings demonstrate that the overexpression of FGF21 improves healthspan”
From Human Aging and Longevity Are Characterized by High Levels of Mitokines (2019) · cites this paper as [17]
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BackgroundSporadic Inclusion Body Myositis: An Acquired Mitochondrial Disease with Extras
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“Corroborating this, a previous review of publications reported that FGF21 is considered a biomarker of many metabolic diseases, and experimental studies have shown that the administration of FGF21 in obesity can reduce body weight, glucose and triglyceride, improve insulin sensitivity and increase the mass of brown ad…”
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BackgroundMiyahara, H., Tamai, C., Inoue, M., Sekiguchi, K., Tahara, D., Tahara, N., Takeda, K., Arafuka, S., Moriyoshi, H., Koizumi, R., et al. (2023) · Brain Pathology · doi:10.1111/bpa.13199 · Cited by 5
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Kukla, M., Kierach, R., Skonieczna, M., Hudy, D., Dąbrowski, K., Menżyk, T., Derra, A., Boroń, D., & Grabarek, B. O. (2021) · Clinical and Experimental Hepatology · doi:10.5114/ceh.2021.104419 · Cited by 5
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BackgroundInflammatory related plasma proteins involved in acute preschool wheeze
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“36 FGF21 has been shown to correlate with the frequency of circulating mast cells in asthmatic patients 37,38 and is involved in energy homoeostasis.”
BackgroundResultMichaëlsson, K., Lemming, E. W., Larsson, S. C., Höijer, J., Melhus, H., Svennblad, B., Baron, J. A., Wolk, A., & Byberg, L. (2024) · BMC Medicine · doi:10.1186/s12916-024-03651-1 · Cited by 4
“Genetically determined lower circulating concentrations of FGF21 in humans seem to lead to higher plasma cholesterol and apolipoprotein B, higher CRP, higher liver enzyme concentrations, and impaired insulin sensitivity [54, 55, 62].”
BackgroundSaponins from Panax japonicus Enhance Lipolysis via Acting on FGF21-β-Klotho/FGFR1 in Obese Mice
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Dual Role of Fibroblast Growth Factor Pathways in Sleep Regulation
Forouzanfar, F., & Negah, S. S. (2022) · Endocrine Metabolic & Immune Disorders - Drug Targets · doi:10.2174/1871530322666220802161031 · Cited by 4
Dahl, K., Friedrichsen, M. H., Ribel‐Madsen, R., Hansen, J. S., Clausen, J. O., Axelsen, M. B., Palle, M. S., Lippert, S. L., Björkdahl, O., Toubro, S., et al. (2025) · Clinical and Translational Science · doi:10.1111/cts.70435 · Cited by 3
Circadian Regulation of Endocrine Fibroblast Growth Factors on Systemic Energy Metabolism
Yang, Z., Zarbl, H., & Guo, G. L. (2024) · Molecular Pharmacology · doi:10.1124/molpharm.123.000831 · Cited by 3
Xu, J., Wu, F., Li, Y., Wang, F., Lin, W., Song, Q., Li, H., Fan, Y., Li, H., Chen, L., et al. (2021) · BMC Neuroscience · doi:10.1186/s12868-021-00676-7 · Cited by 4
“FGF21 is considered an important pharmacological regulator and has the potential to serve as a biomarker for many diseases [21].”
BackgroundWang, X., Li, S., Liu, J., Sun, W., Zhao, H. Q., Han, Q., Liu, Y., Cao, X., Li, Q., Jin, Y., et al. (2023) · Naunyn-Schmiedeberg s Archives of Pharmacology · doi:10.1007/s00210-023-02540-3 · Cited by 3
“Previous studies have indicated that fibroblast growth factor-21 (FGF-21) is a cytokine mainly secreted by the liver and plays a variety of biological functions such as regulating lipid and sugar metabolism, anti-oxidative, and anti-inflammatory effects (Xie and Leung 2017).”
BackgroundBatokine in Central Nervous System Diseases
Shen, M., Zhang, M., Mao, N., & Lin, Z. (2023) · Molecular Neurobiology · doi:10.1007/s12035-023-03490-w · Cited by 3
“Compared with other FGFs, FGF21 exerts almost no mitogenic effects [19].”
BackgroundZheng, P., Wang, F., Li, H., Chen, H., Li, M.-T., Ma, H., He, J., Chen, L., Liu, Y., & Xu, H. (2024) · Endocrine Connections · doi:10.1530/ec-24-0016 · Cited by 3
“It targets these tissues and improves glucose and/ or lipid homeostasis (65, 66).”
BackgroundБелок клото и сердечно-сосудистая система
Тюренков, И. Н., Perfilova, V. N., Нестерова, А. А., & Глинка, Е. Ю. (2021) · Biochemistry (Moscow) · doi:10.31857/s0320972521020020 · Cited by 3
Wu, C.-C., Hung, C.-J., Wang, Y., Lin, S., Chen, W., Kuan, Y., Liao, S., Yang, C., & Chen, C. (2020) · Molecules · doi:10.3390/molecules25143229 · Cited by 2
Next-Generation Therapies for Type 2 Diabetes Mellitus
Patra, D., Roy, S., Ramprasad, P., & Pal, D. (2024) · Smart nanomaterials technology · doi:10.1007/978-981-99-6597-7_13 · Cited by 2
Evaluating Fibroblast Growth Factor 21 (FGF21) Levels Post-Gastric Sleeve Surgery in Obese Patients
Al-Regaiey, K., Iqbal, M., Alzaid, M., Alkaoud, O. A., Alhadyani, M. A., Alagel, O. A., Alshehri, S. S., Altamimi, I., & Alsofayan, S. M. (2024) · Cureus · doi:10.7759/cureus.66122 · Cited by 3
“Administration of FGF21 has been shown to reduce body weight, lower blood glucose and TG levels, enhance insulin sensitivity, maintain β -cell function, decrease LDL, and increase HDL [21].”
BackgroundLi, X., Shen, H., Zhou, T., Cao, X., Chen, Y., Liang, Y., Lu, T., He, J., Dou, Z., Liu, C., et al. (2021) · Research Square · doi:10.21203/rs.3.rs-349444/v1 · Cited by 2
Sepsis and Fibroblast Growth Factor 21: A New Acute Phase Reactant?
Deveci, S., Koca, A. O., Ertuğrul, D. T., Akkan, T., & Beyan, E. (2021) · Türk yoğun bakım derneği dergisi/Türk yoğun bakım dergisi · doi:10.4274/tybd.galenos.2021.13008 · Cited by 1
“There are many findings in the literature showing that FGF 21 is increased in chronic metabolic conditions such as polycystic ovarian syndrome (PCOS), nonalcoholic steatohepatitis (NASH), diabetes mellitus (DM), and chronic kidney failure (CKD) (16-20).”
BackgroundAdipokines Play Important Role in Cell Proliferation and Anti-proliferation
Maurya, S. K., Bhattacharya, N., Bhattacharya, A., & Senapati, S. (2021) · Springer eBooks · doi:10.1007/978-981-16-1846-8_4 · Cited by 1
Cronjé, H. T., Hu, S., Gurrell, R., Vujković, M., Larsson, S. C., Mason, R., Butt, R. P., & Gill, D. (2026) · BMC Medicine · doi:10.1186/s12916-026-04807-x · Cited by 3
“Fibroblast growth factor 21 (FGF21) is a circulating hormone that is primarily produced in the liver and has been implicated in glucose and lipid metabolism [1].”
Hu, R., Zhang, X., Hu, L., Li, X., Hu, Q., & Jin, H. (2026) · Frontiers in Medicine · doi:10.3389/fmed.2026.1868285 · Cited by 1
Wali, J. A., Ramos-Nieves, J. M., Binia, A., & van der Beek, E. M. (2026) · Advances in Nutrition · doi:10.1016/j.advnut.2026.100713 · Cited by 1
“…FGF21-FGFR1c-β -Klotho complex causes phosphorylation of FGFR substrate 2 α (FRS2 α ) and activation of downstream signaling pathways including the mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase and the phosphoinositide 3-kinase/protein kinase B pathways [2,20, 73].”
Adipose FGF21 signalling mediates the anti‐senescence effects of protein restriction
Yang, X., Wu, Y., Yang, Y., Huang, L., Jin, X., Jiang, X., Jin, C., Feng, B., Che, L., Xu, S., et al. (2026) · The Journal of Physiology · doi:10.1113/jp291341 · Cited by 1
“Through binding to fibroblast growth factor receptor 1c (FGFR1c) and its obligate co-receptor β -Klotho (KLB) (Kharitonenkov et al., 2008; Ogawa et al., 2007), FGF21 exerts pleiotropic metabolic effects on peripheral tissues, including WAT (Xie & Leung, 2017).”
Zhang, X., Zhao, Y., Liang, X., Zhang, L., Li, K., Sun, Z., & Zhao, Y. (2022) · Basic & Clinical Pharmacology & Toxicology · doi:10.1111/bcpt.13775 · Cited by 1
Hingole, P., Saha, P., Das, S., Gundu, C., & Kumar, A. (2025) · Molecular Biology Reports · doi:10.1007/s11033-025-10586-0 · Cited by 2
“FGF-21, responsive to mitochondrial stress, regulates energy homeostasis and metabolism [62], with elevated levels noted in COVID-19 patients, indicative of mitochondrial dysfunction.”
From Liver to Muscle: Crosstalk Mechanisms and Interventions in Sarcopenia
Wang, Q., Meng, Y., Wang, X., Lan, X., Fan, G., & Xiang, Y. (2025) · Health and Metabolism · doi:10.53941/hm.2025.100022 · Cited by 1
Oliveira‐Santos, A. A., Salvatori, R., Bueno, A. C., Nogueira, M. C., Campos, V. C., Melo, M. A., Oliveira, C. R. P., Barros-Oliveira, C. S., Marinho, C. G., Damascena, N. P., et al. (2021) · Endocrine · doi:10.1007/s12020-021-02700-6 · Cited by 1
The use of melatonin to mitigate the adverse metabolic side effects of antipsychotics
Romo‐Nava, F., Buijs, R. M., & McElroy, S. L. (2021) · Handbook of clinical neurology · doi:10.1016/b978-0-12-819975-6.00024-8 · Cited by 1
Comment on: “Fibroblast growth factor 21 controls mitophagy and muscle mass” by Oost et al.
Wu, Y., Zhu, B., Chen, Z., Duan, J., & Yang, L. (2019) · Journal of Cachexia Sarcopenia and Muscle · doi:10.1002/jcsm.12465 · Cited by 1
“FGF21, a member of the FGF family, consists of 209 amino acids and is physiologically decomposed into 181 amino acids for maturity, which is mainly secreted by and acts on target tissues such as liver, fat, pancreas, and muscle.(2) Importantly, there are still great divergences in the physiologic role and mechanism of…”
BackgroundCronjé, H. T., Hu, S., Gurrell, R., Vujković, M., Larsson, S. C., Mason, R., Butt, R., & Gill, D. (2025) · medRxiv · doi:10.1101/2025.11.15.25340305 · Cited by 1
Metadata
- Authors
- Xie, T., & Leung, P. S.
- Affiliations
- Chinese University of Hong Kong (HK)
- Corresponding author
- Leung, Po Sing
- Venue
- American Journal of Physiology-Endocrinology and Metabolism
- Publisher
- American Physiological Society
- Published
- 2017-09-01
- Volume
- 313
- Issue
- 3
- Pages
- E292-E302
- ISSN
- 0193-1849 (ISSN-L)
- 1522-1555
- PMC
- PMC5625087
- OpenAlex
- W2620038295
- Cited by
- 121
- References
- 110
- Citations by year
- 2026: 15 · 2025: 13 · 2024: 13 · 2023: 12 · 2022: 13 · 2021: 17 · 2020: 14 · 2019: 13 · 2018: 11
- FWCI
- 0.97
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Locations
- American Journal of Physiology-Endocrinology and Metabolism (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Research Grants Council of Hong Kong (14107415)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fibroblast Growth Factor Research
- Health Sciences › Medicine › Nephrology › Parathyroid Disorders and Treatments
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › GDF15 and Related Biomarkers
- Keywords
- FGF21, metabolic disorders, healthspan, obesity, type 2 diabetes, glucose metabolism, lipid metabolism, insulin sensitivity, β-Klotho, circadian rhythm, biomarkers, weight loss, adipose tissue, liver
- MeSH terms
- Klotho Proteins, Adipose Tissue, Circadian Rhythm, Diabetes Mellitus, Type 2, Fibroblast Growth Factors, Humans, Insulin Resistance, Liver, Longevity, Membrane Proteins, Obesity, Pancreas, Biomarkers, Muscle, Skeletal
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