MMP12 Knockout Prevent Weight and Muscle Loss Induced by Cancer Cachexia
Jiang, L.; Yang, M.; He, S.; Li, Z.; Li, H.; Niu, T.; Xie, D.; Mei, Y.; He, X.; Wei, L.; Huang, P.; Huang, M.; Zhang, R.; Wang, L.; Li, J.
Show abstract
Weight loss and muscle wasting can have devastating impacts on survival and quality of life of patients with cancer cachexia. Here, we have established a hybrid mouse of ApcMin/+ mice and MMP12 knockout mice (ApcMin/+; MMP12-/-) and found that knockout MMP12 can suppress the weight and muscle loss of ApcMin/+ mice. In detail, we found that interleukin 6 was highly upregulated in the serum of cancer patients and MMP12 was increased in muscle of tumor-bearing mice. Interestingly, the interleukin 6 secreted by tumor cells led to MMP12 overexpression in the macrophages, which further resulted in degradation of insulin and insulin-like growth factor 1 and interruption of glycolipid metabolism. Notably, depletion of MMP12 prevented weight loss of ApcMin/+ mice. Our study uncovers the critical role of MMP12 in controlling weight and highlights the great potential of MMP12 in the treatment of cancer cachexia.
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