Remodeling adipocytes’ lipid metabolism with a polycation loaded enzyme-active framework reverses osteoporotic bone marrow

Wenzheng Lin, Suyu Gu, Xing Zhang, Ke Li, Duoyi Zhao, Biao Ma, Chun Pan, Zhuobin Xu, Tingting Liu, Huihui Wang (), Sihan Hu () and Hao Chen ()
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Wenzheng Lin: Yangzhou University
Suyu Gu: Yangzhou University
Xing Zhang: Yangzhou University
Ke Li: Yangzhou University
Duoyi Zhao: Yangzhou University
Biao Ma: Yangzhou University
Chun Pan: Yangzhou University
Zhuobin Xu: Yangzhou University
Tingting Liu: Affiliated Hospital of Yangzhou University
Huihui Wang: Yangzhou University
Sihan Hu: Yangzhou University
Hao Chen: Yangzhou University

Nature Communications, 2025, vol. 16, issue 1, 1-18

Abstract: Abstract The function of osteoporosis-induced bone marrow adipocyte (BMAds) accumulation remains inadequately understood. Here, we analyze bone marrow lipidomic data and reveal that BMAds deteriorate the skeletal microenvironment by secreting large amounts of lipids, altering the senescence status of neighboring cells by affecting their mitochondrial function. To specifically target BMAds under osteoporotic conditions, we design a polycation-loaded biomimetic dual-site framework (CZP@LC) that interferes with lipid crosstalk between BMAds and neighboring bone marrow cells. Shutting down abnormal lipid metabolism and secretion in adipocytes mitigates mitochondrial dysfunction in neighboring cells, which prevents bone marrow cells from senescing. The inhibition of lipid synthesis in BMAds blocks bone marrow stromal cells from differentiating into adipocytes, interrupting the vicious cycle. Moreover, interruption of lipid communication rescues osteoblasts from mitochondrial dysfunction-induced senescence and restores osteogenesis. Here we demonstrate the metabolic mechanisms of BMAds and lipid crosstalk in osteoporosis, provide a potential avenue for targeted biotherapy.

Date: 2025
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DOI: 10.1038/s41467-025-63376-4

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