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Ye L, Zhang QQ, Lin S, Zhang Q, Yan J, Wu DT, Liu SX, Qin W. A Polysaccharide from Ficus carica L. Exerts Immunomodulatory Activity in Both In Vitro and In Vivo Experimental Models. Foods 2024; 13:195. [PMID: 38254496 PMCID: PMC10814953 DOI: 10.3390/foods13020195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/01/2024] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Polysaccharides from Ficus carica L. (FCP) exert multiple biological activities. As a biological macromolecule, the available knowledge about the specific structures and mechanisms of the biological activity of purified 'Brunswick' fig polysaccharides is currently limited. In the present study, chemical purification and characteristics were identified via chemical and instrumental analysis, and then the impact of FCP on immunomodulation activity in vitro and in vivo was examined. Structural characteristics showed that the molecular weight of the FCP sample was determined to be 127.5 kDa; the primary monosaccharides present in the FCP sample were galacturonic acid (GalA), arabinose (Ara), galactose (Gal), rhamnose (Rha), glucose (Glc), and xylose (Xyl) at a ratio of 0.321:0.287:0.269:0.091:0.013:0.011. Based on the investigation of in vitro immunomodulatory activity, FCP was found to stimulate the production of NO, TNF-α, and IL-6, and increased the pinocytic activity of macrophages. Further analysis revealed that FCP activated macrophages by interacting with Toll-like receptor 4 (TLR4). Moreover, the in vivo test results indicate that FCP showed a significant increase in serum pro-inflammatory factors in immunosuppressed mice. Overall, this study suggests that FCP has the potential to be utilized as a novel immunomodulator in the pharmaceutical and functional food industries.
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Affiliation(s)
- Lin Ye
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (L.Y.); (Q.-Q.Z.); (S.L.); (Q.Z.); (J.Y.); (S.-X.L.)
| | - Qin-Qiu Zhang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (L.Y.); (Q.-Q.Z.); (S.L.); (Q.Z.); (J.Y.); (S.-X.L.)
| | - Shang Lin
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (L.Y.); (Q.-Q.Z.); (S.L.); (Q.Z.); (J.Y.); (S.-X.L.)
| | - Qing Zhang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (L.Y.); (Q.-Q.Z.); (S.L.); (Q.Z.); (J.Y.); (S.-X.L.)
| | - Jing Yan
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (L.Y.); (Q.-Q.Z.); (S.L.); (Q.Z.); (J.Y.); (S.-X.L.)
| | - Ding-Tao Wu
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China;
| | - Shu-Xiang Liu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (L.Y.); (Q.-Q.Z.); (S.L.); (Q.Z.); (J.Y.); (S.-X.L.)
| | - Wen Qin
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (L.Y.); (Q.-Q.Z.); (S.L.); (Q.Z.); (J.Y.); (S.-X.L.)
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Zheng J, Zhao Y, Feng Y, Qian W, Zhang Y, Dong B, Liang Q. c-Jun N-terminal kinase activation contributes to improving low temperature tolerance via regulating apoptosis in the Pacific white shrimp Penaeus vannamei. FISH & SHELLFISH IMMUNOLOGY 2023; 139:108912. [PMID: 37353063 DOI: 10.1016/j.fsi.2023.108912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 06/25/2023]
Abstract
Temperature is an essential environmental factor for the survival of aquatic animals. Low temperature stress can induce mitochondria to produce excessive ROS and free radicals, and destroy homeostasis. c-Jun N-terminal kinase (JNK) is involved in regulating various physiological processes, including inflammatory responses, cell cycle, reproduction, and apoptosis. Here, we investigated the mechanism of ROS/JNK pathway under low temperature stress both in vitro and in vivo. In this study, transcriptome analysis revealed that apoptosis, autophagy, calcium channel, and antioxidant were involved in the mediation of low temperature tolerance in Pacific white shrimp (penaeus vannamei). PvJNK was activated in response to low temperature stress. Treatments with different temperature caused oxidative stress as demonstrated by increased intensity of the ROS indicator H2DCF-DA, and induced apoptosis as confirmed by indicator FITC. Pretreatment with N-acetylcysteine, an ROS scavenger, attenuated low temperature induced apoptosis, and inhibited the expression of PvJNK. In addition, we demonstrate that mediator PvJNK translocated to nuclear through interacting with PvRheb. By using flow cytometry, inhibiting PvJNK can increase the expression of apoptosis related genes, accelerate tissue damage, and induce ROS and cell apoptosis. The ultimate inhibition of PvJNK accelerates the mortality of shrimp under low temperature stress. Overall, these findings suggest that during low temperature stress, PvJNK was activated by ROS to regulates apoptosis via interacting with PvRheb to promote PvJNK into the nucleus and to improve low temperature tolerance of shrimp.
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Affiliation(s)
- JieRen Zheng
- Laboratory of Aquatic Animal Diseases and Immunity, School of Fishery, Zhejiang Ocean University, Zhoushan, Zhejiang, 316022, China
| | - Ying Zhao
- Laboratory of Aquatic Animal Diseases and Immunity, School of Fishery, Zhejiang Ocean University, Zhoushan, Zhejiang, 316022, China
| | - YuXin Feng
- Laboratory of Aquatic Animal Diseases and Immunity, School of Fishery, Zhejiang Ocean University, Zhoushan, Zhejiang, 316022, China
| | - WeiGuo Qian
- Laboratory of Aquatic Animal Diseases and Immunity, School of Fishery, Zhejiang Ocean University, Zhoushan, Zhejiang, 316022, China
| | - Yu Zhang
- Laboratory of Aquatic Animal Diseases and Immunity, School of Fishery, Zhejiang Ocean University, Zhoushan, Zhejiang, 316022, China
| | - BeiBei Dong
- Laboratory of Aquatic Animal Diseases and Immunity, School of Fishery, Zhejiang Ocean University, Zhoushan, Zhejiang, 316022, China.
| | - QingJian Liang
- Laboratory of Aquatic Animal Diseases and Immunity, School of Fishery, Zhejiang Ocean University, Zhoushan, Zhejiang, 316022, China; College of Life Science, South China Normal University, Guangzhou, 510631, PR China.
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Li C, Zhu Y, Liu W, Hayashi T, Xiang W, He S, Mizuno K, Hattori S, Fujisaki H, Ikejima T. Increased mitochondrial fission induces NLRP3/cGAS-STING mediated pro-inflammatory pathways and apoptosis in UVB-irradiated immortalized human keratinocyte HaCaT cells. Arch Biochem Biophys 2023; 738:109558. [PMID: 36878340 DOI: 10.1016/j.abb.2023.109558] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/02/2023] [Accepted: 03/03/2023] [Indexed: 03/07/2023]
Abstract
Ultraviolet B (UVB) irradiation causes skin inflammation and apoptosis. Mitochondria are highly dynamic and undergo constant fusion and fission that are essential for maintaining physiological functions of cells. Although dysfunction of mitochondria has been implicated in skin damages, little is known about the roles of mitochondrial dynamics in these processes. UVB irradiation increases abnormal mitochondrial content but decreases mitochondrial volume in immortalized human keratinocyte HaCaT cells. UVB irradiation resulted in marked upregulation of mitochondrial fission protein dynamin-related protein 1 (DRP1) and downregulation of mitochondrial outer membrane fusion proteins 1 and 2 (MFN1 and MFN2) in HaCaT cells. Mitochondrial dynamics was discovered to be crucial for NLRP3 inflammasome and cGAS-STING pathway activation, as well as the induction of apoptosis. Inhibition of mitochondrial fission by treatments with a DRP1 inhibitor, mdivi-1, or with DRP1-targeted siRNA, efficiently prevented UVB-induced NLRP3/cGAS-STING mediated pro-inflammatory pathways or apoptosis in the HaCaT cells, whereas inhibition of mitochondrial fusion with MFN1and 2 siRNA increased these pro-inflammatory pathways or apoptosis. The enhanced mitochondrial fission and reduced fusion caused the up-regulation of reactive oxygen species (ROS). Application of an antioxidant, N-acetyl-l-cysteine (NAC), which scavenges excessive ROS, attenuated inflammatory responses through suppressing NLRP3 inflammasome and cGAS-STING pathway activation, and rescued cells from apoptosis caused by UVB-irradiation. Together, our findings revealed the regulation of NLRP3/cGAS-STING inflammatory pathways and apoptosis by mitochondrial fission/fusion dynamics in UVB-irradiated HaCaT cells, providing a new strategy for the therapy of UVB skin injury.
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Affiliation(s)
- Can Li
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning, PR China
| | - Yuying Zhu
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning, PR China
| | - Weiwei Liu
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning, PR China
| | - Toshihiko Hayashi
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning, PR China; Nippi Research Institute of Biomatrix, Toride, Ibaraki, 302-0017, Japan
| | - Wendie Xiang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning, PR China
| | - Sijun He
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning, PR China
| | - Kazunori Mizuno
- Nippi Research Institute of Biomatrix, Toride, Ibaraki, 302-0017, Japan
| | - Shunji Hattori
- Nippi Research Institute of Biomatrix, Toride, Ibaraki, 302-0017, Japan
| | - Hitomi Fujisaki
- Nippi Research Institute of Biomatrix, Toride, Ibaraki, 302-0017, Japan
| | - Takashi Ikejima
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning, PR China; Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning, PR China.
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