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Tang Q, Xing X, Huang H, Yang J, Li M, Xu X, Gao X, Liang C, Tian W, Liao L. Eliminating senescent cells by white adipose tissue-targeted senotherapy alleviates age-related hepatic steatosis through decreasing lipolysis. GeroScience 2024; 46:3149-3167. [PMID: 38217637 PMCID: PMC11009221 DOI: 10.1007/s11357-024-01068-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 12/28/2023] [Indexed: 01/15/2024] Open
Abstract
Cellular senescence is an important risk factor in the development of hepatic steatosis. Senolytics present therapeutic effects on age-related hepatic steatosis without eliminating senescent hepatocytes directly. Therefore, it highlights the need to find senolytics' therapeutic targets. Dysfunction of adipose tissue underlies the critical pathogenesis of lipotoxicity in the liver. However, the correlation between adipose tissue and hepatic steatosis during aging and its underlying molecular mechanism remains poorly understood. We explored the correlation between white adipose tissue (WAT) and the liver during aging and evaluated the effect of lipolysis of aged WAT on hepatic steatosis and hepatocyte senescence. We screened out the ideal senolytics for WAT and developed a WAT-targeted delivery system for senotherapy. We assessed senescence and lipolysis of WAT and hepatic lipid accumulation after treatment. The results displayed that aging accelerated cellular senescence and facilitated lipolysis of WAT. Free fatty acids (FFAs) generated by WAT during aging enhanced hepatic steatosis and induced hepatocyte senescence. The combined usage of dasatinib and quercetin was screened out as the ideal senolytics to eliminate senescent cells in WAT. To minimize non-specific distribution and enhance the effectiveness of senolytics, liposomes decorated with WAT affinity peptide P3 were constructed for senotherapy in vivo. In vivo study, WAT-targeted treatment eliminated senescent cells in WAT and reduced lipolysis, resulting in the alleviation of hepatic lipid accumulation and hepatocyte senescence when compared to non-targeted treatment, providing a novel tissue-targeted, effective and safe senotherapy for age-related hepatic steatosis.
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Affiliation(s)
- Qi Tang
- National Engineering Laboratory for Oral Regenerative Medicine & Engineering Research Center of Oral Translational Medicine, Ministry of Education & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, West China School of Public Health & West China Fourth Hospital, Sichuan University, No.14, 3Rd Section Of Ren Min Nan Rd, Chengdu, 610041, Sichuan, China
| | - Xiaotao Xing
- National Engineering Laboratory for Oral Regenerative Medicine & Engineering Research Center of Oral Translational Medicine, Ministry of Education & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, West China School of Public Health & West China Fourth Hospital, Sichuan University, No.14, 3Rd Section Of Ren Min Nan Rd, Chengdu, 610041, Sichuan, China
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Laboratory Center of Stomatology, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China
| | - Haisen Huang
- National Engineering Laboratory for Oral Regenerative Medicine & Engineering Research Center of Oral Translational Medicine, Ministry of Education & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, West China School of Public Health & West China Fourth Hospital, Sichuan University, No.14, 3Rd Section Of Ren Min Nan Rd, Chengdu, 610041, Sichuan, China
| | - Jian Yang
- National Engineering Laboratory for Oral Regenerative Medicine & Engineering Research Center of Oral Translational Medicine, Ministry of Education & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, West China School of Public Health & West China Fourth Hospital, Sichuan University, No.14, 3Rd Section Of Ren Min Nan Rd, Chengdu, 610041, Sichuan, China
| | - Maojiao Li
- National Engineering Laboratory for Oral Regenerative Medicine & Engineering Research Center of Oral Translational Medicine, Ministry of Education & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, West China School of Public Health & West China Fourth Hospital, Sichuan University, No.14, 3Rd Section Of Ren Min Nan Rd, Chengdu, 610041, Sichuan, China
| | - Xun Xu
- National Engineering Laboratory for Oral Regenerative Medicine & Engineering Research Center of Oral Translational Medicine, Ministry of Education & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, West China School of Public Health & West China Fourth Hospital, Sichuan University, No.14, 3Rd Section Of Ren Min Nan Rd, Chengdu, 610041, Sichuan, China
| | - Xin Gao
- National Engineering Laboratory for Oral Regenerative Medicine & Engineering Research Center of Oral Translational Medicine, Ministry of Education & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, West China School of Public Health & West China Fourth Hospital, Sichuan University, No.14, 3Rd Section Of Ren Min Nan Rd, Chengdu, 610041, Sichuan, China
| | - Cheng Liang
- National Engineering Laboratory for Oral Regenerative Medicine & Engineering Research Center of Oral Translational Medicine, Ministry of Education & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, West China School of Public Health & West China Fourth Hospital, Sichuan University, No.14, 3Rd Section Of Ren Min Nan Rd, Chengdu, 610041, Sichuan, China
| | - Weidong Tian
- National Engineering Laboratory for Oral Regenerative Medicine & Engineering Research Center of Oral Translational Medicine, Ministry of Education & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, West China School of Public Health & West China Fourth Hospital, Sichuan University, No.14, 3Rd Section Of Ren Min Nan Rd, Chengdu, 610041, Sichuan, China.
| | - Li Liao
- National Engineering Laboratory for Oral Regenerative Medicine & Engineering Research Center of Oral Translational Medicine, Ministry of Education & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, West China School of Public Health & West China Fourth Hospital, Sichuan University, No.14, 3Rd Section Of Ren Min Nan Rd, Chengdu, 610041, Sichuan, China.
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