Publications by authors named "Ryan Calhoun"

Article Synopsis
  • Adipocyte lipolysis plays a crucial role in regulating overall energy levels and metabolic balance, primarily controlled by specific enzymes and their modifications.
  • The study identifies IRF2BP2 as a transcriptional repressor that, when deleted, boosts lipolysis in human adipocytes without altering glucose uptake, while its overexpression has the opposite effect.
  • The research further reveals that the deletion of IRF2BP2 in mice leads to increased lipolysis and inflammation in adipose tissue, suggesting potential strategies for targeting lipolysis in metabolic disease treatments.
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Adipocyte lipolysis controls systemic energy levels and metabolic homeostasis. Lipolysis is regulated by post-translational modifications of key lipolytic enzymes. However, less is known about the transcriptional mechanisms that regulate lipolysis.

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The energy-burning capability of beige adipose tissue is a potential therapeutic tool for reducing obesity and metabolic disease, but this capacity is decreased by aging. Here, we evaluate the impact of aging on the profile and activity of adipocyte stem and progenitor cells (ASPCs) and adipocytes during the beiging process in mice. We found that aging increases the expression of and other fibro-inflammatory genes in fibroblastic ASPCs and blocks their differentiation into beige adipocytes.

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Objective: Glucagon-like peptide 1 (GLP-1) receptor agonists reduce food intake, producing remarkable weight loss in overweight and obese individuals. While much of this weight loss is fat mass, there is also a loss of lean mass, similar to other approaches that induce calorie deficit. Targeting signaling pathways that regulate skeletal muscle hypertrophy is a promising avenue to preserve lean mass and modulate body composition.

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The energy-burning capability of beige adipose tissue is a potential therapeutic tool for reducing obesity and metabolic disease, but this capacity is decreased by aging. Here, we evaluate the impact of aging on the profile and activity of adipocyte stem and progenitor cells (ASPCs) and adipocytes during the beiging process. We found that aging increases the expression of and other fibro-inflammatory genes in fibroblastic ASPCs and blocks their differentiation into beige adipocytes.

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Despite considerable advances in recent years, challenges in delivery and storage of biological drugs persist and may delay or prohibit their clinical application. Though nanoparticle-based approaches for small molecule drug encapsulation are mature, encapsulation of proteins remains problematic due to destabilization of the protein. Reverse micelles composed of decylmonoacyl glycerol (10MAG) and lauryldimethylamino-N-oxide (LDAO) in low-viscosity alkanes have been shown to preserve the structure and stability of a wide range of biological macromolecules.

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Female mate rejection acts as a major selective force within species, and can serve as a reproductive barrier between species. In spite of its critical role in fitness and reproduction, surprisingly little is known about the genetic or neural basis of variation in female mate choice. Here, we identify as a gene affecting female receptivity within , as well as female rejection of male .

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