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Liu ZF, Zhang F, Guo DD, Pan XM, Bi HS. Cytotoxic effect of specific T cells from mice with experimental autoimmune uveitis on murine photoreceptor cells. Int J Ophthalmol 2020; 13:1180-1186. [PMID: 32821670 DOI: 10.18240/ijo.2020.08.02] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 03/10/2020] [Indexed: 12/29/2022] Open
Abstract
AIM To investigate the cytotoxic effect of specific T cells from mice with experimental autoimmune uveitis (EAU) as well as their secreted interferon (IFN)-γ and interleukin (IL)-17A on murine photoreceptor (661W) cells. METHODS An EAU model was established in female mice by injection of interphotoreceptor retinoid binding protein (IRBP) emulsion supplemented with complete Freund's adjuvant (CFA) and Mycobacterium tuberculosis (TB). On day 12 after induction of EAU, specific T cells from spleen and lymph node tissues were isolated and cultured for 4d and the levels of IFN-γ and IL-17A in the supernatants were determined by enzyme-linked immunosorbent assays (ELISAs). T cells and their supernatants were added to 661W cells to observe the alteration of cell morphology; IFN-γ and IL-17A were separately added to 661W cells to observe the effect of IFN-γ and IL-17A on cell proliferation. RESULTS The levels of IFN-γ and IL-17A in the T cell supernatants were 1568.64±38.79 pg/mL and 1456.57±46.98 pg/mL, respectively. The supernatants apparently inhibited 661W cell proliferation (P<0.05). T cells could also attach to the surface of 661W cells, and IFN-γ showed a more serious cytotoxic effect on 661W cells than IL-17A, inhibiting cell proliferation (P<0.01). CONCLUSION IFN-γ and IL-17A from T cells of EAU mice model can exert cytotoxic effects on murine photoreceptor cell proliferation, and IFN-γ shows more serious cytotoxic effects on murine photoreceptor cells than IL-17A.
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Affiliation(s)
- Zheng-Feng Liu
- Medical School of Ophthalmology & Optometry, Shandong University of Traditional Chinese Medicine, Jinan 250355, Shandong Province, China
| | - Feng Zhang
- Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong Province, China.,Shandong Maternity & Child Health Care Hospital, Jinan 250014, Shandong Province, China
| | - Da-Dong Guo
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250002, Shandong Province, China.,Shandong Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases in Universities of Shandong; Eye Institute of Shandong University of Traditional Chinese Medicine, Jinan 250002, Shandong Province, China
| | - Xue-Mei Pan
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250002, Shandong Province, China
| | - Hong-Sheng Bi
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250002, Shandong Province, China.,Shandong Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases in Universities of Shandong; Eye Institute of Shandong University of Traditional Chinese Medicine, Jinan 250002, Shandong Province, China
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Chen T, Gao J, Xiang P, Chen Y, Ji J, Xie P, Wu H, Xiao W, Wei Y, Wang S, Lan L, Ji H, Yan T. Protective effect of platycodin D on liver injury in alloxan-induced diabetic mice via regulation of Treg/Th17 balance. Int Immunopharmacol 2015; 26:338-48. [PMID: 25887267 DOI: 10.1016/j.intimp.2015.04.001] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 03/29/2015] [Accepted: 04/02/2015] [Indexed: 02/06/2023]
Abstract
Platycodin D is a major pharmacological constituent of Platycodi Radix with immunomodulatory activity. The present study was designed to investigate how platycodin D (PLD) reveals liver injury in diabetic mice and its mechanism. Fifty mice were divided into five groups randomly: control group, model group, rosiglitazone (ROG, 10 mg/kg) group, PLD (50 mg/kg) group, and PLD (100 mg/kg) group. Diabetes was induced with the injection of alloxan monohydrate (150 mg/kg) subcutaneously, and animals with blood glucose level of ≥250 mg/dl were considered as diabetic mice. After the first day of diabetes induction, the treatments were performed for 8 weeks. Then the animals were anaesthetized, and blood and liver samples were also collected for further assay. PLD significantly decreased the serum levels of glucose, insulin, interleukin-6 (IL-6), interleukin-1β, tumor necrosis factor-α (TNF-α), and interleukin (IL)-17A and increased IL-10 level in serum. PLD effectively downregulated aspartate transaminase (AST), alanine aminotransferase (ALT), total cholesterol (TC), and triglycerides (TG) in liver. PLD also attenuated liver histological change. In addition, PLD significantly attenuated IL-17A and IL-10 levels in vitro, flow cytometry (FCM) studies also showed that PLD remarkably inhibited Th17 cells and significantly increased Treg cells in liver tissues and spleen cells. Western blot demonstrated PLD inhibited the phosphorylation of JAK and STAT-3 and the expression of RORγt and increased the expression of Foxp3. The findings showed that PLD exerts beneficial effects on alloxan-induced liver injury in mice.
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Affiliation(s)
- Tong Chen
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China
| | - Jin Gao
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Pengjun Xiang
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Yongde Chen
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China
| | - Jing Ji
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China
| | - Peng Xie
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China
| | - Hui Wu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China
| | - Wei Xiao
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China
| | - Yidan Wei
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China
| | - Shumin Wang
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Li Lan
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China
| | - Hui Ji
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China.
| | - Tianhua Yan
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.
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