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Yang Y, Yu L, Zhu T, Xu S, He J, Mao N, Liu Z, Wang D. Neuroprotective effects of Rehmannia glutinosa polysaccharide on chronic constant light (CCL)-induced oxidative stress and autophagic cell death via the AKT/mTOR pathway in mouse hippocampus and HT-22 cells. Int J Biol Macromol 2024; 261:129813. [PMID: 38286367 DOI: 10.1016/j.ijbiomac.2024.129813] [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: 08/14/2023] [Revised: 01/22/2024] [Accepted: 01/26/2024] [Indexed: 01/31/2024]
Abstract
Rehmannia glutinosa polysaccharide (RGP) has been reported to exhibit anti-anxiety effects, yet the underlying mechanism remains unclear. Chronic constant light (CCL) induced cognitive dysfunction associated with oxidative stress in mice has been reported. Here, the neuroprotective effect of RGP on hippocampal neuron damage in CCL-treated mice was investigated. In vivo study, mice were subjected to CCL for 4 weeks and/or oral administration of 100, 200 and 400 mg/kg RGP every other day. In vitro experiment, hippocampal neuron cells (HT-22) was exposed to LED light and/or supplemented with 62.5, 125 and 250 μg/mL RGP. Mice exposed to CCL showed impaired cognitive and depressive-like behavior in the hippocampus, which were reversed by RGP. Meanwhile, RGP reversed light-induced oxidative stress and autophagy both in mice and hippocampal neuron cells (HT-22). Furthermore, compared with Light-exposed group, RGP treatment activated the AKT/mTOR pathway. Importantly, the AKT inhibitor Perifosine significantly weakened the neuroprotective of RGP on Light-induced oxidative stress and autophagy in HT-22 cells by inhibiting AKT/mTOR pathway and increasing the content of autophagy-related protein. Our data demonstrated, for the first time, that oxidative stress and the AKT/mTOR pathway plays a critical role in Light-induced apoptosis and autophagic cell death in mice and HT-22 cells.
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Affiliation(s)
- Yang Yang
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Lin Yu
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Tianyu Zhu
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Shuwen Xu
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jin He
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Ningning Mao
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Zhenguang Liu
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Deyun Wang
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China; MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, PR China.
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Yang Y, Yu L, Zhu T, Xu S, He J, Mao N, Liu Z, Wang D. Neuroprotective effects of Lycium barbarum polysaccharide on light-induced oxidative stress and mitochondrial damage via the Nrf2/HO-1 pathway in mouse hippocampal neurons. Int J Biol Macromol 2023; 251:126315. [PMID: 37582438 DOI: 10.1016/j.ijbiomac.2023.126315] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 07/31/2023] [Accepted: 08/11/2023] [Indexed: 08/17/2023]
Abstract
Light at night (LAN) induced cognitive impairment associated with oxidative stress in mice has been reported. Lycium barbarum polysaccharide (LBP) exhibits anti-tumor, anti-oxidant and neuroprotective effects, yet the neuroprotective effect on light-induced neuron damage still unclear. Here, mice exposed to LAN displayed cognitive impairment and depressive like behavior, which was reversed by LBP treatment. Meanwhile, LBP alleviated light-induced higher apoptosis and mitochondrial damage in HT-22 cells. Also, LBP prevented the decreased of mitochondrial membrane permeabilization (MMP) level in light-treated cells. Additionally, LBP demonstrated its antioxidant potential by reducing ROS production and malondialdehyde (MDA) level, while simultaneously enhancing the levels of superoxide dismutase (SOD) and glutathione peroxidases (GSH-Px) in both light-treated mice and HT-22 cells. Furthermore, the mRNA and protein expression of Nrf2 (NF-E2-related factor 2), heme oxygenease-1 (HO-1), and NAD(P)H quinone oxidoreductase (NQO1) were decreased in both light-treated mice and cells. Additionally, LBP treatment reversed light-induced the inhibition of Nrf2/HO-1 signaling pathway in both mice and cells. Moreover, Nrf2 antagonist ML385 significantly eliminated the neuroprotection of LBP on cell apoptosis, oxidative stress and mitochondrial damage in light-treated cells. These results indicate that LBP can rescue light-induced neurotoxicity in mice and HT-22 cells by activating the Nrf2/HO-1 signaling pathway.
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Affiliation(s)
- Yang Yang
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Lin Yu
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Tianyu Zhu
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Shuwen Xu
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jin He
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Ningning Mao
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Zhenguang Liu
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Deyun Wang
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China; MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, PR China.
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Kim S, Im G, Kim YH, Bhang SH. Fortifying angiogenic efficacy of conditioned media using phototoxic-free blue light for wound healing. Bioeng Transl Med 2023; 8:e10462. [PMID: 37206233 PMCID: PMC10189464 DOI: 10.1002/btm2.10462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 10/13/2022] [Accepted: 11/23/2022] [Indexed: 11/02/2023] Open
Abstract
We used a blue organic light-emitting diode (bOLED) to increase the paracrine factors secreted from human adipose-derived stem cells (hADSCs) for producing conditioned medium (CM). Our results showed that while the bOLED irradiation promotes a mild-dose reactive oxygen generation that enhances the angiogenic paracrine secretion of hADSCs, it does not induce phototoxicity. The bOLED enhances paracrine factors via a cell-signaling mechanism involving hypoxia-inducible factor 1 alpha. This study demonstrated that the CM resulting from bOLED treatment shows improved therapeutic effects on mouse wound-healing models. This method contributes to overcoming the barriers to stem-cell therapies, including the toxicity and low yields from other methods such as nanoparticles, synthetic polymers, and even cell-derived vesicles.
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Affiliation(s)
- Sung‐Won Kim
- School of Chemical Engineering, Sungkyunkwan UniversitySuwonSouth Korea
| | - Gwang‐Bum Im
- School of Chemical Engineering, Sungkyunkwan UniversitySuwonSouth Korea
- Present address:
Department of Cardiac SurgeryBoston Children's Hospital and Harvard Medical SchoolBostonMassachusettsUSA
| | - Yeong Hwan Kim
- School of Chemical Engineering, Sungkyunkwan UniversitySuwonSouth Korea
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan UniversitySuwonSouth Korea
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Lu Y, Xiao Y, Tu Y, Dai W, Xie Y. Propofol-induced sleep ameliorates cognition impairment in sleep-deprived rats. Sleep Breath 2023; 27:181-190. [PMID: 35314924 DOI: 10.1007/s11325-022-02591-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 02/19/2022] [Accepted: 02/25/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Propofol has been shown to clear sleep debt in rats after sleep deprivation (SD). We examined whether or not propofol-assisted sleep can restore cognitive function in SD rats and explored the possible mechanisms. METHODS A sleep deprivation model was established by housing 9 to 12 week-old rats to a multiplatform water tank for 96 h. Model rats were then intraperitoneally injected with different concentrations of propofol or 10% fat emulsion (vehicle control). All treatment groups were examined for spatial learning and memory ability in the Morris water maze (MWM). After euthanasia, morphological changes in the hippocampus, hippocampal neurons, and mitochondria were examined by hematoxylin-eosin staining and transmission electron microscopy. Serum and hippocampal levels of IL-1β, TNF-α, and hippocampal concentrations of ATP and Cyt-c were measured by ELISA (enzyme-linked immunosorbent assay). Immunohistochemistry and Western blotting were performed to assess hippocampal expression of Bcl-2, Bax, and cleaved caspase-3. RESULTS Results showed that escape latencies in MWM training trials were significantly shorter and target crossings in the memory probe trial significantly greater in propofol-treated SD model rats compared to vehicle-treated SD rats. Propofol also reduced the number of apoptotic bodies in the hippocampal CA1 region. Sleep deprivation reduced IL-1β and ATP in hippocampus while increasing TNF-α and Cyt-c, and propofol treatment reversed all these changes. There was no significant difference in Bcl-2 expression between propofol- and vehicle-treated SD rats, but pro-apoptotic Bax and cleaved caspase-3 expression levels were significantly reduced by propofol in SD rats. CONCLUSIONS Propofol-assisted sleep restored cognitive function in SD rats possibly by attenuating mitochondria-mediated neuronal apoptosis in the hippocampus.
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Affiliation(s)
- Yizhi Lu
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, no.6 shuang-yong road, Nanning, 530021, Guangxi, China
| | - Yong Xiao
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, no.6 shuang-yong road, Nanning, 530021, Guangxi, China
| | - Youbing Tu
- Department of Anesthesiology, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, 518020, Guangdong, China
| | - Weixin Dai
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, no.6 shuang-yong road, Nanning, 530021, Guangxi, China
| | - Yubo Xie
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, no.6 shuang-yong road, Nanning, 530021, Guangxi, China.
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Yang Y, Xu P, Liu J, Zhao M, Cong W, Han W, Wang D, Zhao R. Constant light exposure in early life induces m 6A-mediated inhibition of IGF gene family in the chicken. J Anim Sci 2022; 100:6596166. [PMID: 35641104 DOI: 10.1093/jas/skac199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 05/26/2022] [Indexed: 11/13/2022] Open
Abstract
Insulin-like growth factor (IGF) family plays important roles in regulating the development of various organ systems through stimulating cell proliferation and differentiation. Photoperiod is an important factor affecting growth and development in the chicken, yet the effect of constant light exposure in early life on IGF1 and IGF2 expression in the chicken remains unclear. In this study, one-day-old chickens were kept in either constant light (24L:0D, LL) or natural photoperiod (12L:12D, LD) for the first week of life and then maintained in constant light from 8 d to 21 d of age. Constant light exposure in early life reduced mRNA expression of IGF gene family, including mRNA expression of IGF1, IGF2 and IGF2 binding proteins (IGF2BPs), in the hippocampus, hypothalamus and liver of chickens at both 7 d and 21 d of age. Moreover, constant light exposure increased mRNA expression of genes involved in RNA methylation N6-methyladenosine (m 6A) in a tissue-specific manner. Interestingly, higher m 6A on 3'UTR of IGF2 mRNA coincides with lower IGF2 mRNA, indicating a possible role of m 6A in the post-transcriptional regulation of IGF2 expression in the hippocampus, hypothalamus, and liver of chickens. These findings suggest a m 6A-mediated gene regulation of IGF gene family in different organs of chicken and expand our knowledge on mechanism of gene regulation in response to early life experience.
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Affiliation(s)
- Yang Yang
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P. R. China
| | - Peirong Xu
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P. R. China
| | - Jie Liu
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P. R. China
| | - Mindie Zhao
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P. R. China
| | - Wei Cong
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P. R. China
| | - Wanwan Han
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P. R. China
| | - Deyun Wang
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Ruqian Zhao
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, P. R. China.,Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P. R. China
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Luo G, Feng R, Li W, Chen Y, Sun Y, Ma J, Duo Y, Wen T. Dcf1 induces glioblastoma cells apoptosis by blocking autophagy. Cancer Med 2022; 11:207-223. [PMID: 34799992 PMCID: PMC8704163 DOI: 10.1002/cam4.4440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 09/15/2021] [Accepted: 10/17/2021] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Dcf1 has been demonstrated to play vital roles in many CNS diseases, it also has a destructive role on cell mitochondria in glioma cells and promotes the autophagy. Hitherto, it is unclear whether the viability of glioblastoma cells is affected by Dcf1, in particular Dcf1 possesses broad localization on different organelles, and the organelles interaction frequently implicated in cancer cells survival. METHODS Surgically excised WHO grade IV human glioblastoma tissues were collected and cells isolated for culturing. RT-PCR and DNA sequencing assay to estimate the abundance and mutation of Dcf1. iTRAQ sequencing and bioinformatic analysis were performed. Subsequently, immunoprecipitation assay to evaluate the degradation of HistoneH2A isomers by UBA52 ubiquitylation. Transmission electron microscopy (TEM) was applied to observe the structure change of mitochondria and autophagosome. Organelle isolated assay to determine the distribution of protein. Cell cycle and apoptosis were evaluated by flow cytometric assays. RESULTS Dcf1 was downregulated in WHO grade IV tumor without mutation, and overexpression of Dcf1 was found to significantly regulate glioblastoma cells. One hundred and seventy-six differentially expressed proteins were identified by iTRAQ sequencing. Furthermore, we confirmed that overexpression of Dcf1 destabilized the structure of the nucleosome via UBA52 ubiquitination to downregulate HistoneH2A.X but not macroH2A or HistoneH2A.Z, decreased the mitochondrial DNA copy number and inhibited the mitochondrial biogenesis, thus causing mitochondrial destruction and dysfunction in order to supply cellular energy and induce mitophagy preferentially but not apoptosis. Dcf1 also has disrupted the integrity of lysosomes to block autolysosome degradation and autophagy and to increase the release of Cathepsin B and D from lysosomes into cytosol. These proteins cleaved and activated BID to induce glioblastoma cells apoptosis. CONCLUSIONS In this study, we demonstrated that unmutated Dcf1 expression is negatively related to the malignancy of glioblastoma, Dcf1 overexpression causes nucleosomes destabilization, mitochondria destruction and dysfunction to induce mitophagy preferentially, and block autophagy by impairing lysosomes to induce apoptosis in glioblastoma.
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Affiliation(s)
- Guanghong Luo
- Laboratory of Molecular Neural BiologySchool of Life SciencesShanghai UniversityShanghaiChina
- Department of Radiation OncologyThe Second Clinical Medical CollegeJinan University (Shenzhen People's Hospital)ShenzhenChina
- Integrated Chinese and Western Medicine Postdoctoral Research StationJinan UniversityGuangzhouChina
| | - Ruili Feng
- Laboratory of Molecular Neural BiologySchool of Life SciencesShanghai UniversityShanghaiChina
| | - Wengang Li
- Department of NeurosurgeryShanghai Fifth People's HospitalFudan UniversityShanghaiChina
| | - Yanlu Chen
- Laboratory of Molecular Neural BiologySchool of Life SciencesShanghai UniversityShanghaiChina
| | - Yangyang Sun
- Laboratory of Molecular Neural BiologySchool of Life SciencesShanghai UniversityShanghaiChina
| | - Junfeng Ma
- Department of NeurosurgeryShanghai Fifth People's HospitalFudan UniversityShanghaiChina
| | - Yanhong Duo
- Department of Microbiology, Tumor and Cell Biology (MTC)Karolinska InstitutetStockholmSweden
| | - Tieqiao Wen
- Laboratory of Molecular Neural BiologySchool of Life SciencesShanghai UniversityShanghaiChina
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Topaloglu N, Bakay E. Mechanistic Approaches to the Light-Induced Neural Cell Differentiation: Photobiomodulation vs Low-Dose Photodynamic Therapy. Photodiagnosis Photodyn Ther 2021; 37:102702. [PMID: 34954387 DOI: 10.1016/j.pdpdt.2021.102702] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/20/2021] [Accepted: 12/20/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Neurodegenerative diseases are the results of irreversible damages in the neuronal cells by affecting vital functions temporarily or even permanently. The use of light for the treatment of these diseases is an emerging promising innovative method. Photobiomodulation (PBM) and Photodynamic Therapy (PDT) are the modalities that have a wide range of use in medicine and have opposite purposes, biostimulation and cell death respectively. METHODS In this study, we aimed to compare these two modalities (PDT and PBM) at low-level intensities and create a stimulatory effect on the differentiation of PC12 cells. Three different energy densities (1, 3, and 5 J/cm2) were used in PBM and Chlorin e6-mediated PDT applications upon irradiation with 655-nm laser light. The light-induced differentiation profile of PC12 cells was analyzed by morphological examinations, qRT-PCR, cell viability assay, and some mechanistic approaches such as; the analysis of intracellular ROS production, NO release, and mitochondrial membrane potential change. RESULTS It has been observed that both of these modalities were successful at neural cell differentiation. PBM at 1 J/cm2 and low-dose PDT at 3 J/cm2 energy densities provided the best differentiation profiles which were proved by the over-expressions of SYN-1 and GAP43 genes. It was also observed that intracellular ROS production and NO release had pivotal roles in these mechanisms with more cell differentiation obtained especially in low-dose PDT application. CONCLUSION It can be concluded that light-induced mechanisms with properly optimized light parameters have the capacity for neural cell regeneration and thus, can be a successful treatment for incurable neurodegenerative diseases.
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Affiliation(s)
- Nermin Topaloglu
- Department of Biomedical Engineering, Faculty of Engineering and Architecture, Izmir Katip Celebi University, Izmir, 35620 Turkey.
| | - Emel Bakay
- Department of Biomedical Technologies, Graduate School of Natural and Applied Sciences, Izmir Katip Celebi University, Izmir, 35620 Turkey.
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Yang Y, Jiang W, Feng Y, Liu J, Chen H, Wang D, Zhao R. Melatonin alleviates hippocampal GR inhibition and depression-like behavior induced by constant light exposure in mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 228:112979. [PMID: 34794022 DOI: 10.1016/j.ecoenv.2021.112979] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 10/27/2021] [Accepted: 11/07/2021] [Indexed: 06/13/2023]
Abstract
Light pollution has become a potential health risk factor worldwide. Chronic exposure to constant light (CCL) leads to depressive-like behavior, yet the mechanism remains unclear. In this study, mice exposed to CCL for 3 weeks exhibited depression-like behaviors, with decreased melatonin in plasma and increased oxidative stress in hippocampus. Meanwhile, CCL-exposed mice showed elevated plasma corticosterone (CORT) levels and diminished glucocorticoid receptor (GR) phosphorylation in hippocampus. Concurrently, glycogen synthase kinase 3 beta (GSK3β) was inactivated with increased phosphorylation at Ser9. The interrelationship of GSK3β and GR was clarified in mouse hippocampal neuron (HT-22) cells. GSK3β inhibitor CHIR-99021 induced GR inhibition with diminished phosphorylation, while GR inhibitor RU486 did not affect GSK3β expression or phosphorylation. Furthermore, GSK3β-mediated GR inhibition was reproduced in vitro in HT-22 cells treated with melatonin receptor antagonist luzindole and H2O2 in combination. Finally, melatonin reversed GSK3β-mediated GR inhibition in hippocampus and improved CCL-induced depression-like behavior in mice. These results indicate that CCL induces melatonin deficiency and oxidative stress in hippocampus, which in turn leads to GSK3β-mediated GR inhibition and depression-like behavior in mice.
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Affiliation(s)
- Yang Yang
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, PR China; Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Wenduo Jiang
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, PR China; Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yue Feng
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, PR China; Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jie Liu
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, PR China; Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Hongwu Chen
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA, USA
| | - Deyun Wang
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, PR China; Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Ruqian Zhao
- MOE Joint International Research Laboratory of Animal Health & Food Safety, Institute of Immunology, Nanjing Agricultural University, Nanjing 210095, PR China; Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
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Icariin and its phosphorylated derivatives reduce duck hepatitis A virus serotype 1-induced oxidative stress and inflammatory damage in duck embryonic hepatocytes through mitochondrial regulation. Res Vet Sci 2021; 139:133-139. [PMID: 34298287 DOI: 10.1016/j.rvsc.2021.07.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 07/03/2021] [Accepted: 07/13/2021] [Indexed: 11/20/2022]
Abstract
Duck hepatitis A virus serotype 1 (DHAV-1) causes acute inflammatory injury with a very high mortality rate in ducklings, leading to severe economic losses worldwide, especially in mainland China. There is an urgent need to find new treatments to prevent and control infection with DHAV-1. Not only is there a shortage of commercial anti-DHAV-1 drugs, but there are also gaps in the use and protection rates of existing commercial vaccines. We previously found that icariin (ICA), an extract of Epimedium, can reduce the mortality rate of ducklings after DHAV-1 infection, and the effect of ICA after phosphorylation modification (pICA) is more evident. In this study, we used duck embryo hepatocytes (DEHs) to investigate the mechanism of the alleviation of DHAV-1-induced inflammation and oxidative stress by ICA and pICA, and to further study their effects on hepatocyte mitochondrial function, apoptosis and cell cycle. It was found that ICA and pICA can inhibit the negative effects of DHAV-1 on apoptosis and cell cycle progression by stabilizing mitochondrial function, thereby reducing inflammation and ultimately protecting liver cells. The effects of pICA are more beneficial than those of ICA. The results of this study may be useful in the development of a new prophylactic and therapeutic strategy against DHAV-1 and other acute inflammatory diseases.
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10
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Photobiomodulation effects on active brain networks during a spatial memory task. Physiol Behav 2021; 230:113291. [DOI: 10.1016/j.physbeh.2020.113291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/09/2020] [Accepted: 12/14/2020] [Indexed: 01/05/2023]
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11
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Wang F, Wang L, Sui G, Yang C, Guo M, Xiong X, Chen Z, Lei P. IGF-1 Alleviates Mitochondrial Apoptosis through the GSK3β/NF-κB/NLRP3 Signaling Pathway in LPS-Treated PC-12 Cells. J Mol Neurosci 2021; 71:1320-1328. [PMID: 33403593 DOI: 10.1007/s12031-020-01759-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/16/2020] [Indexed: 02/06/2023]
Abstract
Inflammation contributes to mitochondrial dysfunction and neuronal apoptosis. The aim of this study was to determine whether insulin-like growth factor-1 (IGF-1) alleviates mitochondrial apoptosis in lipopolysaccharide (LPS)-treated PC-12 cells, and to further explore the mechanism involved. Prepared PC-12 cells were treated with IGF-1, Mdivi-1 (DRP1 blocker), LY294002 (PI3K blocker), betulinic acid (NF-κB activator) or their combinations. Mitochondrial membrane potential and ATP generation were then measured to assess mitochondrial function. The rate of apoptosis was determined using flow cytometry. The expression of several apoptosis proteins (i.e. Bax, cleaved caspase-9 and cleaved caspase-3) and signaling proteins (i.e. p-GSK3β, NF-κB and NLRP3) was measured using western blotting. Compared with the control cells, the LPS-treated cells showed evidence of mitochondrial dysfunction, increased apoptosis and upregulation of apoptosis proteins, which were significantly alleviated by Mdivi-1. These findings indicate that neuronal apoptosis was activated partly through the mitochondrial pathway. IGF-1 treatment inhibited mitochondrial apoptosis in a dose-dependent manner in the LPS-treated cells. The reagent also increased the expression of p-GSK3β and decreased the expression of NF-κB and NLRP3. Both LY294002 and betulinic acid reversed the protective effect of IGF-1. In addition, LY294002 affected the expression of the three signaling proteins, while betulinic acid only affected the expression of NF-κB and NLRP3. These findings indicated a GSK3β/NF-κB/NLRP3 signaling pathway was existed and was involved in the protective mechanism of IGF-1. In conclusion, IGF-1 alleviated mitochondrial apoptosis through GSK3β/NF-κB/NLRP3 signaling pathway in LPS-treated PC-12 cells.
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Affiliation(s)
- Feng Wang
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin Geriatrics Institute, Tianjin, 300052, China.
| | - Lu Wang
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin Geriatrics Institute, Tianjin, 300052, China
| | - Guanghong Sui
- Department of Child and Adolescent Psychology, Tianjin Anding Hospital, Tianjin, 300074, China
| | - Caixia Yang
- Department of Rehabilitation, Tianjin Anding Hospital, Tianjin, 300074, China
| | - Mengtian Guo
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin Geriatrics Institute, Tianjin, 300052, China
| | - Xiangyang Xiong
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin Geriatrics Institute, Tianjin, 300052, China
| | - Zheng Chen
- Department of Psychology, Tianjin Anding Hospital, Tianjin, 300074, China
| | - Ping Lei
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin Geriatrics Institute, Tianjin, 300052, China
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Song J, Li D, Shan Z, Kurskaya O, Sharshov K, Gao T, Bi H. Photocytotoxicity of white light-emitting diode irradiation on human lens epithelium and retinal pigment epithelium via the JNK and p38 MAPK signaling pathways. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 213:112058. [PMID: 33147556 DOI: 10.1016/j.jphotobiol.2020.112058] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 10/06/2020] [Accepted: 10/19/2020] [Indexed: 12/23/2022]
Abstract
WLEDs have lately been the preferred lighting device based on properties such as energy saving, high efficiency, longevity, and environmental protection. However, studies on the safety of white light-emitting diode (WLED) are limited. In our previous study, we found that WLED light (4000 K ± 500 K color temperature, 250 lx, and 20 min exposure) is photocytotoxic to three mammalian cell lines by causing cell lipid peroxidation. To further investigate the potential photocytotoxicity of WLEDs on the human body, we used two human eye cell lines SRA01/04 and D407 as target cells for evaluating its potential phototoxicity on the human eye in the present study based on cell viability, apoptosis, and intracellular oxidative stress assays, as well as the activation levels of reactive oxygen species (ROS)-related apoptosis pathways, including extracellular signal-regulated kinase (ERK), c-Jun NH2-terminal kinase (JNK) and p38 kinase (p38), using mitogen-activated protein kinase (MAPK) signaling pathway assays. The results showed that WLED light has photocytotoxicities on SRA01/04 and D407 cells, which were both in a time-, irradiance-, and color temperature-dependent manner and strongest at the conditions of 2 h irradiation time, 60 W/m2 irradiance, and 4000 K color temperature. Moreover, the photocytotoxicity of red light-emitting diode (LED) light was the strongest in the three tested monochromatic light compositions of WLED. Mechanism studies show that the potential phototoxicity of WLED on human lens epithelium and retinal pigment epithelium may be caused by its induced oxidative stress damage via the JNK and p38 MAPKs pathways.
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Affiliation(s)
- Jiayin Song
- Tianjin Key Laboratory of Architectural Physics and Environmental Technology, Tianjin University, Tianjin 300072, China; Qinghai Provincial Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 81008, China
| | - Daoyong Li
- College of Architecture and Art, North China University of Technology, Beijing, 100144, China
| | - Zhongshu Shan
- Department of Orthopaedics, People's Hospital of Qinghai Province, Xining 810007, China
| | - Olga Kurskaya
- Department of Experimental Modeling and Pathogenesis of Infectious Diseases, Federal Research Center of Fundamental and Translational Medicine, Novosibirsk 630000, Russia
| | - Kirill Sharshov
- Department of Experimental Modeling and Pathogenesis of Infectious Diseases, Federal Research Center of Fundamental and Translational Medicine, Novosibirsk 630000, Russia
| | - Tingting Gao
- Department of Psychology, School of Public Health, Southern Medical University, Guangzhou 510515, China.
| | - Hongtao Bi
- Qinghai Provincial Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 81008, China.
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13
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Photobiomodulation as a promising new tool in the management of psychological disorders: A systematic review. Neurosci Biobehav Rev 2020; 119:242-254. [PMID: 33069687 DOI: 10.1016/j.neubiorev.2020.10.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/21/2020] [Accepted: 10/09/2020] [Indexed: 12/18/2022]
Abstract
Photobiomodulation is a brain modulation technique that has become a promising treatment for multiple pathologies. This systematic review collects studies up to 2019 about the beneficial effects of photobiomodulation as a therapy for treating psychological disorders and a tool for modulating cognitive processes. This technique is mostly used for the treatment of depression and stress, as well as to study its effects on psychological variables in healthy subjects. Despite the lack of parameters used, photobiomodulation seems to achieve enough brain penetration to produce beneficial effects in healthy subjects and patients with multiple pathologies. The best parameters are the wavelengths of 810 nm for the treatment of depression and 1064 nm for cognitive enhancement, along with a scalp irradiance of 250 mW/cm2 and a scalp yield of 60 J/cm2. It weekly application on the bilateral prefrontal area and the default mode network seems to be ideal for the maintenance of the effects. Photobiomodulation could be used as an effective and safe therapy for the treatment of multiple psychological pathologies.
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14
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Yang Y, Jia Y, Sun Q, Dong H, Zhao R. White light emitting diode induces autophagy in hippocampal neuron cells through GSK-3-mediated GR and RORα pathways. Aging (Albany NY) 2020; 11:1832-1849. [PMID: 30923260 PMCID: PMC6461168 DOI: 10.18632/aging.101878] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 03/11/2018] [Indexed: 02/04/2023]
Abstract
Autophagy plays an important role in cell survival under diverse stress conditions. Here, we show that white LED light exposure for 24 h significantly activated autophagy-related genes and increased autophagosome formation in hippocampal neural cells (HT-22). Concurrently, the rhythmic pattern of clock-related gene expression was disrupted, which was associated with augmented expression of SIRT1, AMPK and retinoid-related orphan receptor alpha (RORα). SR1001, a specific inhibitor of RORα, protected the cells from light-induced activation of autophagy. Moreover, light exposure increased glucocorticoid receptor (GR) phosphorylation and nuclear translocation. GR inhibitor RU486 prevented light-induced up-regulation of RORα and the activation of autophagy. These changes were associated with enhanced glycogen synthase kinase-3 (GSK-3) activity and its specific inhibitor CHIR-99021 significantly rescued light-induced autophagy and augmented GR, RORα and autophagy-related proteins. Furthermore, GSK-3 was identified as an upstream regulator of GR/RORα signaling as it was not affected by GR or RORα inhibitors. Taken together, our data demonstrate that GSK-3-mediated GR/RORα signaling pathway is involved in white LED light-induced autophagy in hippocampal neuron cells.
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Affiliation(s)
- Yang Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P. R. China.,Key Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, P. R. China
| | - Yimin Jia
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P. R. China.,Key Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, P. R. China
| | - Qinwei Sun
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P. R. China.,Key Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, P. R. China
| | - Haibo Dong
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P. R. China.,Key Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, P. R. China
| | - Ruqian Zhao
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P. R. China.,Key Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, P. R. China
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15
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Tao S, Niu L, Cai L, Geng Y, Hua C, Ni Y, Zhao R. N-(3-oxododecanoyl)-l-homoserine lactone modulates mitochondrial function and suppresses proliferation in intestinal goblet cells. Life Sci 2018; 201:81-88. [PMID: 29596921 DOI: 10.1016/j.lfs.2018.03.049] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/17/2018] [Accepted: 03/25/2018] [Indexed: 02/08/2023]
Abstract
AIMS The quorum-sensing molecule N‑(3‑oxododecanoyl)‑l‑homoserine lactone (C12-HSL), produced by the Gram negative human pathogenic bacterium Pseudomonas aeruginosa, modulates mammalian cell behavior. Our previous findings suggested that C12-HSL rapidly decreases viability and induces apoptosis in LS174T goblet cells. MAIN METHODS In this study, the effects of 100 μM C12-HSL on mitochondrial function and cell proliferation in LS174T cells treated for 4 h were evaluated by real-time PCR, enzyme-linked immunosorbent assay (ELISA) and flow cytometry. KEY FINDINGS The results showed that the activities of mitochondrial respiratory chain complexes IV and V were significantly increased (P < 0.05) in LS174T cells after C12-HSL treatment, with elevated intracellular ATP generation (P < 0.05). Flow cytometry analysis revealed significantly increased intracellular Ca2+ levels (P < 0.05), as well as disrupted mitochondrial activity and cell cycle arrest upon C12-HSL treatment. Apoptosis and cell proliferation related genes showed markedly altered expression levels (P < 0.05) in LS174T cells after C12-HSL treatment. Moreover, the paraoxonase 2 (PON2) inhibitor TQ416 (1 μM) remarkably reversed the above C12-HSL associated effects in LS174T cells. SIGNIFICANCE These findings indicated that C12-HSL alters mitochondrial energy production and function, and inhibits cell proliferation in LS174T cells, with PON2 involvement.
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Affiliation(s)
- Shiyu Tao
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Liqiong Niu
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Liuping Cai
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Yali Geng
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Canfeng Hua
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Yingdong Ni
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu, China.
| | - Ruqian Zhao
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu, China
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