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Huang Q, Zhong X, Li J, Hu R, Yi J, Sun J, Xu Y, Zhou X. Exosomal ncRNAs: Multifunctional contributors to the immunosuppressive tumor microenvironment of hepatocellular carcinoma. Biomed Pharmacother 2024; 173:116409. [PMID: 38460375 DOI: 10.1016/j.biopha.2024.116409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/23/2024] [Accepted: 03/06/2024] [Indexed: 03/11/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is a malignant liver cancer characterized by aggressive progression, unfavorable prognosis, and an increasing global health burden. Therapies that precisely target immunological checkpoints and immune cells have gained significant attention as possible therapeutics in recent years. In truth, the efficacy of immunotherapy is heavily contingent upon the tumor microenvironment (TME). Recent studies have indicated that exosomes serve as a sophisticated means of communication among biomolecules, executing an essential part in the TME of immune suppression. Exosomal non-coding RNAs (ncRNAs) can induce the activation of tumor cells and immunosuppressive immune cells that suppress the immune system, such as cancer-associated fibroblasts (CAFs), tumor-associated macrophages (TAMs), tumor-associated neutrophils (TANs), CD+8 T cells, regulatory T cells (Tregs), and regulatory B cells (Bregs). This cell-cell crosstalk triggered by exosomal ncRNAs promotes tumor proliferation and metastasis, angiogenesis, malignant phenotype transformation, and drug resistance. Hence, it is imperative to comprehend how exosomal ncRNAs regulate tumor cells or immune cells within the TME to devise more comprehensive and productive immunotherapy programs. This study discusses the features of exosomal ncRNAs in HCC and how the activation of the exosomes redefines the tumor's immunosuppressive microenvironment, hence facilitating the advancement of HCC. Furthermore, we also explored the potential of exosomal ncRNAs as a viable biological target or natural vehicle for HCC therapy.
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Affiliation(s)
- Qi Huang
- Faculty of Chinese Medicine, Macau University of Science and Technology, Taipa, Macao PR China; Department of Liver Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, PR China; Department of Liver Disease, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, PR China
| | - Xin Zhong
- Department of Liver Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, PR China; Department of Liver Disease, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, PR China
| | - Jing Li
- Faculty of Chinese Medicine, Macau University of Science and Technology, Taipa, Macao PR China; Department of Liver Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, PR China; Department of Liver Disease, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, PR China
| | - Rui Hu
- Faculty of Chinese Medicine, Macau University of Science and Technology, Taipa, Macao PR China; Department of Liver Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, PR China; Department of Liver Disease, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, PR China
| | - Jinyu Yi
- Faculty of Chinese Medicine, Macau University of Science and Technology, Taipa, Macao PR China; Department of Liver Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, PR China; Department of Liver Disease, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, PR China
| | - Jialing Sun
- Department of Liver Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, PR China; Department of Liver Disease, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, PR China
| | - Youhua Xu
- Faculty of Chinese Medicine, Macau University of Science and Technology, Taipa, Macao PR China.
| | - Xiaozhou Zhou
- Department of Liver Disease, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, PR China; Department of Liver Disease, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, PR China.
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Shi W, Zhang Z, Li X, Chen J, Liang X, Li J. GenX Disturbs the Indicators of Hepatic Lipid Metabolism Even at Environmental Concentration in Drinking Water via PPARα Signaling Pathways. Chem Res Toxicol 2024; 37:98-108. [PMID: 38150050 DOI: 10.1021/acs.chemrestox.3c00342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Hexafluoropropylene oxide dimer acid (HFPO-DA; trade name GenX), as a substitute for perfluorooctanoic acid (PFOA), has been attracting increasing attention. However, its impact and corresponding mechanism on hepatic lipid metabolism are less understood. To investigate the possible mechanisms of GenX for hepatotoxicity, a series of in vivo and in vitro experiments were conducted. In in vivo experiment, male mice were exposed to GenX in drinking water at environmental concentrations (0.1 and 10 μg/L) and high concentrations (1 and 100 mg/L) for 14 weeks. In in vitro experiments, human hepatocellular carcinoma cells (HepG2) were exposed to GenX at 10, 160, and 640 μM for 24 and 48 h. GenX exposure via drinking water resulted in liver damage and disruption of lipid metabolism even at environmental concentrations. The results of triglycerides (TG) and total cholesterol (TC) in this study converged with the results of the population study, for which TG increased in the liver but unchanged in the serum, whereas TC increased in both liver and serum concentrations. KEGG and GO analyses revealed that the hepatotoxicity of GenX was associated with fatty acid transport, synthesis, and oxidation pathways and that Peroxisome Proliferator-Activated Receptor (PPARα) contributed significantly to this process. PPARα inhibitors significantly reduced the expression of CD36, CPT1β, PPARα, SLC27A1, ACOX1, lipid droplets, and TC, suggesting that GenX exerts its toxic effects through PPARα signaling pathway. In general, GenX at environmental concentrations in drinking water causes abnormal lipid metabolism via PPARα signaling pathway.
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Affiliation(s)
- Wenshan Shi
- School of Public Health, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College, Soochow University, Suzhou 215123, China
| | - Zengli Zhang
- School of Public Health, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College, Soochow University, Suzhou 215123, China
| | - Xinyu Li
- School of Public Health, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College, Soochow University, Suzhou 215123, China
| | - Jingsi Chen
- School of Public Health, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College, Soochow University, Suzhou 215123, China
| | - Xiaojun Liang
- Center for Disease Control and Prevention of Kunshan, Kunshan 215301, China
| | - Jiafu Li
- School of Public Health, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College, Soochow University, Suzhou 215123, China
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