Cited by 151Adipokines, Inflammation, and Metabolic DiseasesRegulation of Appetite and ObesityDiabetes Treatment and Management

Efficacy of metreleptin in obese patients with type 2 diabetes: Cellular and molecular pathways underlying leptin tolerance

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Moon, Hyun-Seuk, Matarese, Giuseppe, Brennan, Aoife M., Chamberland, John P., Liu, Xiaowen, Fiorenza, Christina G., Mylvaganam, Geetha H., Abanni, Luisa +5 more·2011·Diabetes

Abstract

OBJECTIVE: Metreleptin has been efficacious in improving metabolic control in patients with lipodystrophy, but its efficacy has not been tested in obese patients with type 2 diabetes. RESEARCH DESIGN AND METHODS: We studied the role of leptin in regulating the endocrine adaptation to long-term caloric deprivation and weight loss in obese diabetic subjects over 16 weeks in the context of a double-blinded, placebo-controlled, randomized trial. We then performed detailed interventional and mechanistic signaling studies in humans in vivo, ex vivo, and in vitro. RESULTS: In obese patients with diabetes, metreleptin administration for 16 weeks did not alter body weight or circulating inflammatory markers but reduced HbA(1c) marginally (8.01 ± 0.93-7.96 ± 1.12, P = 0.03). Total leptin, leptin-binding protein, and antileptin antibody levels increased, limiting free leptin availability and resulting in circulating free leptin levels of ∼50 ng/mL. Consistent with clinical observations, all metreleptin signaling pathways studied in human adipose tissue and peripheral blood mononuclear cells were saturable at ∼50 ng/mL, with no major differences in timing or magnitude of leptin-activated STAT3 phosphorylation in tissues from male versus female or obese versus lean humans in vivo, ex vivo, or in vitro. We also observed for the first time that endoplasmic reticulum (ER) stress in human primary adipocytes inhibits leptin signaling. CONCLUSIONS: In obese patients with diabetes, metreleptin administration did not alter body weight or circulating inflammatory markers but reduced HbA(1c) marginally. ER stress and the saturable nature of leptin signaling pathways play a key role in the development of leptin tolerance in obese patients with diabetes.

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  • In adults with hyperleptinemia and leptin resistance, administration of metreleptin showed marginal benefits with a reduction in glycated hemoglobin.

    “In adults with hyperleptinemia and leptin resistance administration of metreleptin showed marginal benefits with a reduction in glycated hemoglobin [43].”

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Authors
Moon, H.-S., Matarese, G., Brennan, A. M., Chamberland, J. P., Liu, X., Fiorenza, C. G., Mylvaganam, G. H., Abanni, L., Carbone, F., Williams, C. J., De Paoli, A. M., Schneider, B. E., & Mantzoros, C. S.
Affiliations
  • Beth Israel Deaconess Medical Center (US)
  • Institute for Experimental Endocrinology and Oncology (IT)
  • Amgen, Inc., Thousand Oaks, California
Corresponding author
Mantzoros, Christos S.
Venue
Diabetes
Published
2011-05-21
Volume
60
Issue
6
Pages
1647-1656
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2169893368
Cited by
151
References
28
Citations by year
2026: 3 · 2025: 3 · 2024: 7 · 2023: 14 · 2022: 9 · 2021: 10 · 2020: 5 · 2019: 6 · 2018: 12 · 2017: 12 · 2016: 9 · 2015: 12 · 2014: 16 · 2013: 17 · 2012: 8
FWCI
11.28
Type
journal article
Language
en
Open access
Locations
  • Diabetes (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
Funders
  • U.S. Department of Veterans Affairs
  • Amgen
  • Amylin Pharmaceuticals
  • Beth Israel Deaconess Medical Center
  • Harvard Catalyst (M01-RR-01032)
  • National Institutes of Health (DK58785)
  • National Institute on Aging (R01AG032030, AG032030.)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK079929, DK-081913, R01DK058785, F32DK064550, R56DK058785, DK 79929, DK 58785, K24DK081913, F32-DK64550-01A1)
  • National Center for Research Resources (M01-RR-01032, M01RR001032, UL1RR025758)
  • FP7 Ideas: European Research Council (202579)
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
Keywords
metreleptin, leptin resistance, type 2 diabetes, obesity, leptin signaling, endoplasmic reticulum stress, STAT3 phosphorylation, adipocytes, HbA1c, caloric restriction, weight loss, adipose tissue, inflammatory markers
MeSH terms
Adult, Body Weight, Cells, Cultured, Diabetes Mellitus, Type 2, Double-Blind Method, Enzyme-Linked Immunosorbent Assay, Female, Glycated Hemoglobin, Humans, Immunohistochemistry, Male, Middle Aged, Obesity, Phosphorylation, Blotting, Western, Signal Transduction, Adipocytes, Leptin, STAT3 Transcription Factor, Receptors, Leptin

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