Cited by 254Bone Metabolism and DiseasesBone health and osteoporosis researchMesenchymal stem cell research

Glutamine Metabolism Regulates Proliferation and Lineage Allocation in Skeletal Stem Cells

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Yu, Yilin, Newman, Hunter, Shen, Leyao, Sharma, Deepika, Hu, Guoli, Mirando, Anthony J., Zhang, Hongyuan, Knudsen, Everett +3 more·2019·Cell Metabolism

Abstract

Skeletal stem cells (SSCs) are postulated to provide a continuous supply of osteoblasts throughout life. However, under certain conditions, the SSC population can become incorrectly specified or is not maintained, resulting in reduced osteoblast formation, decreased bone mass, and in severe cases, osteoporosis. Glutamine metabolism has emerged as a critical regulator of many cellular processes in diverse pathologies. The enzyme glutaminase (GLS) deaminates glutamine to form glutamate-the rate-limiting first step in glutamine metabolism. Using genetic and metabolic approaches, we demonstrate GLS and glutamine metabolism are required in SSCs to regulate osteoblast and adipocyte specification and bone formation. Mechanistically, transaminase-dependent α-ketoglutarate production is critical for the proliferation, specification, and differentiation of SSCs. Collectively, these data suggest stimulating GLS activity may provide a therapeutic approach to expand SSCs in aged individuals and enhance osteoblast differentiation and activity to increase bone mass.

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Crossref · 10.1016/j.cmet.2019.01.016

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  • When osteoblasts are induced to undergo mineralization, glucose alone is inadequate to fulfill their energy needs; the degree of mineralization only increases when cells are provided with glucose and glutamine supplementation.

    “It has been observed that when osteoblasts are induced to undergo mineralization, glucose alone is inadequate to fulfill their energy needs. The degree of mineralization only increases when cells are provided with glucose and glutamine supplementation [64, 65].”

    From Mesenchymal stromal cells in bone marrow niche of patients with multiple myeloma: a double-edged sword (2025) · cites this paper as [65]

    The Results section reports that withdrawing glutamine during skeletal stem cell differentiation reduced matrix mineralization, supporting the claim that glutamine availability matters. But the Discussion says glutamine did not appear to be a major energy source and that inhibiting its metabolism did not cause energetic stress; it does not support the assertion that glucose alone fails to meet the cells’ energy needs. The experiment also concerned skeletal stem cells differentiating into osteoblasts, rather than supplementation of already differentiated osteoblasts. (LLM, conf=0.90)

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  • In skeletal stem cells, GLS and glutamine metabolism are required for regulation of osteoblast and adipocyte specification and physiological bone formation.

    “In skeletal stem cells (SSCs), GLS and glutamine metabolism are required for the regulation of osteoblast and adipocyte specification and physiological bone formation107.”

    From Glutamine reliance in cell metabolism (2020) · cites this paper as [107]

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1 of the 69 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. (2004). In Bone Health and Osteoporosis: A Report of the Surgeon General, (Rockville (MD). 20945569

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Authors
Yu, Y., Newman, H., Shen, L., Sharma, D., Hu, G., Mirando, A. J., Zhang, H., Knudsen, E., Zhang, G.-F., Hilton, M. J., & Karner, C. M.
Affiliations
Duke University (US)
Corresponding author
Karner, Courtney M.
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2019-04
Volume
29
Issue
4
Pages
966-978.e4
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2913128985
Cited by
253
References
69
Citations by year
2026: 26 · 2025: 37 · 2024: 41 · 2023: 38 · 2022: 40 · 2021: 31 · 2020: 34 · 2019: 6
FWCI
9.18
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
NIH (2AR063071, AR071967)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
Keywords
skeletal stem cells, glutamine metabolism, glutaminase, osteogenic differentiation, adipogenesis, lineage specification, cell proliferation, alpha-ketoglutarate, transamination, bone formation, bone mass, osteoporosis, aging, stem cell expansion
MeSH terms
Animals, Cells, Cultured, Female, Glutamine, Male, Mice, Inbred Strains, Mass Spectrometry, Muscle, Skeletal, Cell Lineage, Myoblasts, Skeletal, Cell Proliferation, Mice

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