Cancer cells exhibit altered metabolism and energetics, prominently reprogramming lipid metabolism to support tumor growth and progression, making it a promising target for cancer therapy. However, traditional genetic and pharmaceutical approaches for disrupting lipid metabolism face challenges due to the adaptability of tumor metabolism and potential side effects on normal tissues. Here, we present a bacteria-based bioorthogonal platform combining transition metal catalysts and to disrupt the flexible lipid homeostasis in tumors. This platform activates glutamine transporter inhibitors , targeting lipid synthesis in hypoxic tumor environments, while inhibits lipid accumulation. By disrupting lipid metabolism and glutamine utilization, the present study proposes a safe and potent strategy for cancer therapy, with potential applications for other metabolic diseases.
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http://dx.doi.org/10.1039/d4sc06481j | DOI Listing |
J Immunol
January 2025
Department of Microbiology and Immunology, Louisiana State University Health Sciences Center, Shreveport, LA, United States.
Macrophages are critical to maintaining and restoring tissue homeostasis during inflammation. The lipid metabolic state of macrophages influences their function and polarization, which is crucial to the resolution of inflammation. The contribution of lipid synthesis to proinflammatory macrophage responses is well understood.
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March 2025
Weill Institute for Cell and Molecular Biology, Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA.
Lipid homeostasis is critical to neuronal survival. ATP-binding cassette A (ABCA) proteins are lipid transporters associated with neurodegenerative diseases. How ABCA transporters regulate lipid homeostasis in neurodegeneration is an outstanding question.
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March 2025
Department of Radiation Oncology, Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Lung cancer exhibits altered metabolism, influencing its response to radiation. To investigate the metabolic regulation of radiation response, we conducted a comprehensive, metabolic-wide CRISPR-Cas9 loss-of-function screen using radiation as selection pressure in human non-small cell lung cancer. Lipoylation emerged as a key metabolic target for radiosensitization, with lipoyltransferase 1 (LIPT1) identified as a top hit.
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March 2025
Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium.
Carbohydrate-responsive element binding protein (ChREBP) and Max-like protein X (MLX) form a heterodimeric transcription factor complex that couples intracellular sugar levels to carbohydrate and lipid metabolism. To promote the expression of target genes, two ChREBP-MLX heterodimers form a heterotetramer to bind a tandem element with two adjacent E-boxes, called carbohydrate-responsive element (ChoRE). How the ChREBP-MLX hetero-tetramerization is achieved and regulated remains poorly understood.
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March 2025
MaineHeath Institute for Research, Center for Molecular Medicine, Scarborough, Maine, United States.
Obesity is a global health challenge associated with significant metabolic and cardiovascular risks. Bariatric surgery and GLP-1 receptor agonists (GLP-1RAs) are effective interventions for weight loss and metabolic improvement, yet their comparative effects on systemic metabolism-particularly energy metabolism, bone health, and heart function-remain unclear. In this study, obese male mice underwent vertical sleeve gastrectomy (VSG), 6 weeks of GLP-1RA (semaglutide) treatment, or sham procedure with saline injection as controls.
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