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Li F, Zhang Y, Lin Z, Yan L, Liu Q, Li Y, Pei X, Feng Y, Han X, Yang J, Zheng F, Li T, Zhang Y, Fu Z, Shao D, Yu J, Li C. Targeting SPHK1/S1PR3-regulated S-1-P metabolic disorder triggers autophagic cell death in pulmonary lymphangiomyomatosis (LAM). Cell Death Dis 2022; 13:1065. [PMID: 36543771 PMCID: PMC9772321 DOI: 10.1038/s41419-022-05511-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/07/2022] [Accepted: 12/09/2022] [Indexed: 12/24/2022]
Abstract
Lymphangioleiomyomatosis (LAM), a progressive pulmonary disease exclusively affecting females, is caused by defects or mutations in the coding gene tuberous sclerosis complex 1 (TSC1) or TSC2, causing the mammalian target of rapamycin complex 1 (mTORC1) activation and autophagy inhibition. Clinically, rapamycin shows limited cytocidal effects, and LAM recurs after drug withdrawal. In this study, we demonstrated that TSC2 negatively regulated the sphingolipid metabolism pathway and the expressions of sphingosine kinase 1 (SPHK1) and sphingosine-1-phosphate receptor 3 (S1PR3) were significantly elevated in LAM patient-derived TSC2-deficient cells compared to TSC2-addback cells, insensitive to rapamycin treatment and estrogen stimulation. Knockdown of SPHK1 showed reduced viability, migration and invasion in TSC2-deficient cells. Selective SPHK1 antagonist PF543 potently suppressed the viability of TSC2-deficient cells and induced autophagy-mediated cell death. Meanwhile, the cognate receptor S1PR3 was identified to mediating the tumorigenic effects of sphingosine-1-phosphate (S1P). Treatment with TY52156, a selective antagonist for S1PR3, or genetic silencing using S1PR3-siRNA suppressed the viability of TSC2-deficient cells. Both SPHK1 and S1PR3 inhibitors markedly exhibited antitumor effect in a xenograft model of TSC2-null cells, restored autophagy level, and triggered cell death. Together, we identified novel rapamycin-insensitive sphingosine metabolic signatures in TSC2-null LAM cells. Therapeutic targeting of aberrant SPHK1/S1P/S1PR3 signaling may have potent therapeutic benefit for patients with TSC/LAM or other hyperactive mTOR neoplasms with autophagy inhibition.
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Affiliation(s)
- Fei Li
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Yifan Zhang
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Zhoujun Lin
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Lizhong Yan
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Qiao Liu
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Yin Li
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Xiaolin Pei
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Ya Feng
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Xiao Han
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Juan Yang
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Fangxu Zheng
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Tianjiao Li
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Yupeng Zhang
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
| | - Zhenkun Fu
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China ,grid.410736.70000 0001 2204 9268Department of Immunology & Wu Lien-Teh Institute & Heilongjiang Provincial Key Laboratory for Infection and Immunity, Harbin Medical University & Heilongjiang Academy of Medical Science, Harbin, China
| | - Di Shao
- grid.414287.c0000 0004 1757 967XChongqing University Central Hospital, Chongqing Emergency Medical Center, 400000 Chongqing, China ,Chonggang General Hospital, 400000 Chongqing, China
| | - Jane Yu
- grid.24827.3b0000 0001 2179 9593Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267 USA
| | - Chenggang Li
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, 300350 Tianjin, P.R. China
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Cong CV, Anh TTT, Ly TT, Duc NM. Pulmonary lymphangioleiomyomatosis (LAM): A literature overview and case report. Radiol Case Rep 2022; 17:1646-1655. [PMID: 35330669 PMCID: PMC8938872 DOI: 10.1016/j.radcr.2022.02.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 02/20/2022] [Accepted: 02/22/2022] [Indexed: 11/24/2022] Open
Abstract
Lymphangioleiomyomatosis is a rare multisystem disease associated with genetic mutations. The disease usually occurs in women of childbearing age and is characterized by infiltration of immature smooth muscle cells into the lungs, airways, and axial lymphatic systems of the chest and abdomen. The disease often destroys lung parenchyma and produces air cysts. Lymphangioleiomyomatosis cell infiltration of the lymphatic axis can affect hilar lymph nodes, mediastinal ganglia, and extrathoracic lymph nodes. The disease can cause lymphatic dilation in the lungs and thoracic ducts, causing chylous effusion into the pleural or abdominal cavities. Invasion of cells into the walls of pulmonary veins can lead to venous obstruction and pulmonary venous hypertension with hemoptysis. Most patients present with cough, dyspnea, pneumothorax, hemoptysis, and abnormal lung function. Definitive diagnosis is usually based on histopathology and immunohistochemistry. We present a case of LAM in a 36-year-old female patient who was confirmed by specimens obtained from pneumothorax surgery and positive immunohistochemical staining with HMB-45.
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