Background: Metastasis is a major cause of HCC-related deaths with no effective pharmacotherapies. Chronic inflammation promotes HCC dissemination, however, its underlying mechanisms are not fully understood. Here, we investigated the role of Kruppel-like factor 7 (KLF7) in inflammation-provoked HCC metastasis and proposed therapeutic strategies for KLF7-positive patients.Methods: The expression of KLF7 in human HCC specimens were examined by immunohistochemistry and quantitative real-time PCR. The luciferase reporter assays and chromatin immunoprecipitation assays were conducted to explore the transcriptional regulation related to KLF7. Orthotopic xenograft models and DEN/CCl4-induced HCC models were established to evaluate HCC progression and metastasis.Results: KLF7 overexpression promotes HCC metastasis through transactivating toll-like receptor 4 (TLR4) and protein tyrosine kinase 2 (PTK2) expression. High mobility group box 1 (HMGB1) upregulates KLF7 expression through the TLR4/advanced glycosylation end-product specific receptor (RAGE)-PI3K-AKT-NF-& kappa;B pathway, forming an HMGB1-KLF7-TLR4 positive feedback loop. The HMGB1-KLF7-TLR4/PTK2 axis is gradually activated during the progression of inflammation-HCC transition. Genetic depletion of KLF7 impedes HMGB1-mediated HCC progression and metastasis. The combined application of TLR4 inhibitor TAK-242 and PTK2 inhibitor defactinib alleviates HCC progression and metastasis induced by the HMGB1-KLF7 axis. In human HCCs, KLF7 expression is positively correlated with cytoplasmic HMGB1, p-p65, TLR4, and PTK2 levels, and patients positively co-expressing HMGB1/KLF7, p-p65/KLF7, KLF7/TLR4 or KLF7/PTK2 exhibit the worst prognosis.Conclusions: HMGB1-induced KLF7 overexpression facilitates HCC progression and metastasis by upregulating TLR4 and PTK2. Genetic ablation of KLF7 via AAV gene therapy and combined blockade of TLR4 and PTK2 represents promising therapy strategies for KLF7-positive HCC patients.
基金:
National Natural Science Foundation of China [82273374, 82273310, 82173313, 82103303]; Natural Science Foundation of Hubei Province [2022CFA016]; Basic Research Support Program of Huazhong University of Science and Technology [2023BR038]
第一作者单位:[1]Fourth Mil Med Univ, State Key Lab Holist Integrat Management Gastroin, Xijing Hosp Digest Dis, Xian 710032, Shaanxi, Peoples R China[2]Fourth Mil Med Univ, Natl Clin Res Ctr Digest Dis, Xijing Hosp Digest Dis, Xian 710032, Shaanxi, Peoples R China
共同第一作者:
通讯作者:
通讯机构:[1]Fourth Mil Med Univ, State Key Lab Holist Integrat Management Gastroin, Xijing Hosp Digest Dis, Xian 710032, Shaanxi, Peoples R China[2]Fourth Mil Med Univ, Natl Clin Res Ctr Digest Dis, Xijing Hosp Digest Dis, Xian 710032, Shaanxi, Peoples R China[3]Huazhong Univ Sci & Technol, Inst Liver & Gastrointestinal Dis, Dept Gastroenterol,Hubei Key Lab Hepatopancreatob, Tongji Med Coll,Tongji Hosp, Wuhan 430030, Hubei, Peoples R China[*1]Huazhong Univ Sci & Technol, Hubei Key Lab Hepatopancreatobiliary Dis, Inst Liver & Gastrointestinal Dis, Dept Gastroenterol,Tongji Med Coll,Tongji Hosp, Wuhan 430030, Hubei, Peoples R China
推荐引用方式(GB/T 7714):
Feng Weibo,Chen Jie,Huang Wenjie,et al.HMGB1-mediated elevation of KLF7 facilitates hepatocellular carcinoma progression and metastasis through upregulating TLR4 and PTK2[J].THERANOSTICS.2023,13(12):4042-4058.doi:10.7150/thno.84388.
APA:
Feng, Weibo,Chen, Jie,Huang, Wenjie,Wang, Guodong,Chen, Xilang...&Xia, Limin.(2023).HMGB1-mediated elevation of KLF7 facilitates hepatocellular carcinoma progression and metastasis through upregulating TLR4 and PTK2.THERANOSTICS,13,(12)
MLA:
Feng, Weibo,et al."HMGB1-mediated elevation of KLF7 facilitates hepatocellular carcinoma progression and metastasis through upregulating TLR4 and PTK2".THERANOSTICS 13..12(2023):4042-4058