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Tachachartvanich P, Sangsuwan R, Navasumrit P, Ruchirawat M. Assessment of immunomodulatory effects of five commonly used parabens on human THP-1 derived macrophages: Implications for ecological and human health impacts. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 944:173823. [PMID: 38851341 DOI: 10.1016/j.scitotenv.2024.173823] [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: 04/19/2024] [Revised: 06/05/2024] [Accepted: 06/05/2024] [Indexed: 06/10/2024]
Abstract
Parabens are widely used as broad-spectrum anti-microbials and preservatives in food, cosmetics, pharmaceuticals, and personal care products. Studies suggest that the utilization of parabens has substantially increased over the past years, particularly during the global pandemic of coronavirus disease 2019 (COVID-19). Although parabens are generally recognized as safe by the U.S. FDA, some concerns have been raised regarding the potential health effects of parabens associated with immunotoxicity. Herein, we comprehensively investigated several key characteristics of immunotoxicants of five commonly used parabens (methyl-, ethyl-, propyl-, butyl-, and benzyl parabens) in human THP-1 derived macrophages, which are effector cells serving as a first line of host defense against pathogens and tumor immunosurveillance. The results indicate parabens, at concentrations found in humans and biota, significantly dampened macrophage chemotaxis and secretion of major pro-inflammatory cytokines (TNF-α and IL-6) and anti-inflammatory cytokine (IL-10), corroborating the mRNA expression profile. Furthermore, some parabens were found to markedly alter macrophage adhesion and cell surface expression of costimulatory molecules, CD80+ and CD86+, and significantly increase macrophage phagocytosis. Collectively, these findings heighten awareness of potential immunotoxicity posed by paraben exposure at biologically relevant concentrations, providing implications for human health and ecological risks associated with immune dysfunctions.
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Affiliation(s)
- Phum Tachachartvanich
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Rapeepat Sangsuwan
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Panida Navasumrit
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Mathuros Ruchirawat
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Bangkok 10210, Thailand.
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2
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Zeng J, Liu J, Zhao N, Wong IN, Huang R. Caulerpa chemnitzia polysaccharide exerts immunomodulatory activity in macrophages by mediating the succinate/PHD2/HIF-1α/IL-1β pathway. Int J Biol Macromol 2024:134450. [PMID: 39098690 DOI: 10.1016/j.ijbiomac.2024.134450] [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: 04/25/2024] [Revised: 07/12/2024] [Accepted: 08/01/2024] [Indexed: 08/06/2024]
Abstract
Algal polysaccharide is an important food functional factor with diverse bioactive and low toxicity. Previous studies have confirmed Caulerpa chemnitzia polysaccharides (CRVP) have immunomodulatory activity, but the immunomodulatory mechanism of CRVP in macrophages has not been thoroughly explored yet. In our research, we found that CRVP has outstanding immunomodulatory activity in macrophages, which is reflected in promoting cell proliferation, upregulating cytokines (IL-1β, IL-6, and TNF-α) expression, and increasing NO and ROS levels. Additionally, the result of joint analysis of untargeted metabolomics showed metabolism played a major role in the immunomodulatory of CRVP and suggested succinic acid was a key metabolite. Further verification indicated that the accumulation of succinic acid in macrophages after administered with CRVP, induced the down-regulation of prolyl hydroxylase domain 2 (PHD2) and up-regulation of hypoxia-inducible factor-1α (HIF-1α), thereby enhancing IL-1β expression. Together, the immunomodulatory activity of CRVP in macrophages via succinate/PHD2/HIF-1α/IL-1β pathway.
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Affiliation(s)
- Jinzi Zeng
- Guangdong Provincial Key Laboratory of Food Quality and Safety/College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Jun Liu
- Laboratory of Pathogenic Biology, Guangdong Medical University, Zhanjiang 524023, China
| | - Ning Zhao
- Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen 518104, China
| | - Io Nam Wong
- Faculty of Medicine, Macau University of Science and Technology, Macau 999078, Macau.
| | - Riming Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety/College of Food Science, South China Agricultural University, Guangzhou 510642, China.
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3
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Chang YY, Chao YH, Jean WH, Lin TY, Lu CW. Nitric oxide and tumor necrosis factor-⍺ levels are negatively correlated in endotoxin tolerance recovery in vitro. Nitric Oxide 2024; 147:1-5. [PMID: 38547960 DOI: 10.1016/j.niox.2024.03.005] [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: 02/01/2024] [Revised: 03/19/2024] [Accepted: 03/26/2024] [Indexed: 04/12/2024]
Abstract
Endotoxin tolerance (ET) is the hyporesponsiveness to lipopolysaccharide (LPS) after prior exposure. It is characterized by the downregulation of pro-inflammatory cytokine levels. Although ET protects against inflammation, its abolishment or recovery is critical for immunity. Nitric oxide (NO) plays various roles in the development of ET; however, its specific role in ET recovery remains unknown. To induce ET, RAW264.7 cells (a murine macrophage cell line) were pre-exposed to LPS (LPS1, 100 ng/mL for 24 h) and subsequently re-stimulated with LPS (LPS2, 100 ng/mL for 24 h). Expression of cytokines, NO, nitrite and inducible NO synthase (iNOS) were measured after 0, 12, 24, and 36 h of resting after LPS1 treatment with or without the iNOS-specific inhibitor, 1400W. LPS2-induced tumor necrosis factor-⍺ (TNF-⍺) and interleukin-6 (IL-6) were downregulated after LPS1 treatment, confirming the development of ET. Notably, TNF-⍺ and IL-6 levels spontaneously rebounded after 12-24 h of resting following LPS1 treatment. In contrast, levles of NO, nitrite and iNOS increased during ET development and decreased during ET recovery. Moreover, 1400W inhibited ET development and blocked the early production of NO (<12 h) during ET recovery. Our findings suggest a negative correlation between iNOS-induced NO and cytokine levels in the abolishment of ET.
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Affiliation(s)
- Ya-Ying Chang
- Department of Anesthesiology, Far-Eastern Memorial Hospital, New Taipei City, Taiwan; International Program in Engineering for Bachelor, Yuan Ze University, Chung-Li, Taiwan
| | - Yuh-Huey Chao
- Department of Anesthesiology, Far-Eastern Memorial Hospital, New Taipei City, Taiwan; Department of Biomedical Engineering, Ming Chuan University, Taoyuan, Taiwan
| | - Wei-Horng Jean
- Department of Anesthesiology, Far-Eastern Memorial Hospital, New Taipei City, Taiwan; Department of Mechanical Engineering, Yuan Ze University, Chung-Li, Taiwan
| | - Tzu-Yu Lin
- Department of Anesthesiology, Far-Eastern Memorial Hospital, New Taipei City, Taiwan; Department of Mechanical Engineering, Yuan Ze University, Chung-Li, Taiwan
| | - Cheng-Wei Lu
- Department of Anesthesiology, Far-Eastern Memorial Hospital, New Taipei City, Taiwan; Department of Mechanical Engineering, Yuan Ze University, Chung-Li, Taiwan.
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4
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Kodosaki E, Daniels-Morgan A, Hassan N, Webb R, Morris K, Kelly CM. Development and characterisation of mgTHP-1, a novel in vitro model for neural macrophages with microglial characteristics. Neurol Res 2024; 46:1-13. [PMID: 37935114 DOI: 10.1080/01616412.2023.2257422] [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: 11/01/2022] [Accepted: 04/23/2023] [Indexed: 11/09/2023]
Abstract
Neuroinflammation is primarily characterised by activation of the brain's resident macrophages - the microglia. However, other central nervous system (CNS) cells also contribute to this response, including the astrocytes and endothelial cells. In addition, there is infiltration into the CNS of peripherally derived immune cells. Together these cells mediate inflammation by the production of cytokines, chemokines, reactive oxygen species, and secondary messengers, and enacting of the appropriate response to those signals. However, deciphering the specific contributions of each cell type has been challenging. Studying CNS cell biology is often challenging, as the isolation of primary cells is not always feasible, and differentiation towards microglia-like cells is complex. Here, we demonstrate a novel method whereby THP-1 monocytic cells are differentiated into neural macrophage cells with microglia-like cell characteristics. The cells, designated mgTHP-1, show typical morphological and gene expression patterns of resident CNS macrophages and functionally respond to inflammatory stimuli by producing inflammatory cytokines. Furthermore, with the addition of Vicenin-2 (an anti-inflammatory flavonoid) such responses can be reversed. This novel cell model will allow further investigations, and hence insights, into the neuroinflammatory mechanisms associated with CNS diseases.
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Affiliation(s)
- E Kodosaki
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - A Daniels-Morgan
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - N Hassan
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - R Webb
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - K Morris
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - C M Kelly
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
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Wang D, Sun T, Xia Y, Zhao Z, Sheng X, Li S, Ma Y, Li M, Su X, Zhang F, Li P, Ma D, Ye J, Lu F, Ji C. Homodimer-mediated phosphorylation of C/EBPα-p42 S16 modulates acute myeloid leukaemia differentiation through liquid-liquid phase separation. Nat Commun 2023; 14:6907. [PMID: 37903757 PMCID: PMC10616288 DOI: 10.1038/s41467-023-42650-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 10/09/2023] [Indexed: 11/01/2023] Open
Abstract
CCAAT/enhancer binding protein α (C/EBPα) regulates myeloid differentiation, and its dysregulation contributes to acute myeloid leukaemia (AML) progress. Clarifying its functional implementation mechanism is of great significance for its further clinical application. Here, we show that C/EBPα regulates AML cell differentiation through liquid-liquid phase separation (LLPS), which can be disrupted by C/EBPα-p30. Considering that C/EBPα-p30 inhibits the functions of C/EBPα through the LZ region, a small peptide TAT-LZ that could instantaneously interfere with the homodimerization of C/EBPα-p42 was constructed, and dynamic inhibition of C/EBPα phase separation was observed, demonstrating the importance of C/EBPα-p42 homodimers for its LLPS. Mechanistically, homodimerization of C/EBPα-p42 mediated its phosphorylation at the novel phosphorylation site S16, which promoted LLPS and subsequent AML cell differentiation. Finally, decreasing the endogenous C/EBPα-p30/C/EBPα-p42 ratio rescued the phase separation of C/EBPα in AML cells, which provided a new insight for the treatment of the AML.
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Affiliation(s)
- Dongmei Wang
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Immunohematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Tao Sun
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Immunohematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yuan Xia
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Zhe Zhao
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xue Sheng
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Shuying Li
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yuechan Ma
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Mingying Li
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xiuhua Su
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Fan Zhang
- Department of Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Peng Li
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Daoxin Ma
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Immunohematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Jingjing Ye
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Fei Lu
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China.
| | - Chunyan Ji
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China.
- Shandong Key Laboratory of Immunohematology, Qilu Hospital of Shandong University, Jinan, Shandong, China.
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Chen TT, Li XQ, Li N, Xu YP, Wang YH, Wang ZY, Zhang SN, Qi M, Zhang SH, Wei W, Wang H, Sun WY. β-arrestin2 deficiency ameliorates S-100-induced autoimmune hepatitis in mice by inhibiting infiltration of monocyte-derived macrophage and attenuating hepatocyte apoptosis. Acta Pharmacol Sin 2023; 44:2048-2064. [PMID: 37225848 PMCID: PMC10545685 DOI: 10.1038/s41401-023-01103-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 05/01/2023] [Indexed: 05/26/2023] Open
Abstract
Autoimmune hepatitis (AIH) is a progressive hepatitis syndrome characterized by high transaminase levels, interface hepatitis, hypergammaglobulinemia, and the presence of autoantibodies. Misdiagnosis or delayed treatment of AIH can lead to cirrhosis or liver failure, which poses a major risk to human health. β-Arrestin2, a key scaffold protein for intracellular signaling pathways, has been found to be involved in many autoimmune diseases such as Sjogren's syndrome and rheumatoid arthritis. However, whether β-arrestin2 plays a role in AIH remains unknown. In the present study, S-100-induced AIH was established in both wild-type mice and β-arrestin2 knockout (Arrb2 KO) mice, and the experiments identified that liver β-arrestin2 expression was gradually increased, and positively correlated to serum ANA, ALT and AST levels during AIH progression. Furthermore, β-arrestin2 deficiency ameliorated hepatic pathological damage, decreased serum autoantibody and inflammatory cytokine levels. β-arrestin2 deficiency also inhibited hepatocyte apoptosis and prevented the infiltration of monocyte-derived macrophages into the damaged liver. In vitro experiments revealed that β-arrestin2 knockdown suppressed the migration and differentiation of THP-1 cells, whereas β-arrestin2 overexpression promoted the migration of THP-1 cells, which was regulated by the activation of the ERK and p38 MAPK pathways. In addition, β-arrestin2 deficiency attenuated TNF-α-induced primary hepatocyte apoptosis by activating the Akt/GSK-3β pathway. These results suggest that β-arrestin2 deficiency ameliorates AIH by inhibiting the migration and differentiation of monocytes, decreasing the infiltration of monocyte-derived macrophages into the liver, thereby reducing inflammatory cytokines-induced hepatocytes apoptosis. Therefore, β-arrestin2 may act as an effective therapeutic target for AIH.
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Affiliation(s)
- Ting-Ting Chen
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Xiu-Qin Li
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Nan Li
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Ya-Ping Xu
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Yu-Han Wang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Zi-Ying Wang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Sheng-Nan Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Meng Qi
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Shi-Hao Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China.
| | - Hua Wang
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China.
| | - Wu-Yi Sun
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China.
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Lu C, Wu Z, Gao H, Li H, Deng R, Luo N, Fan S, Li X, He D, Zhao H. Sperm induce macrophage extracellular trap formation via phagocytosis-dependent mechanism. Biol Reprod 2023; 109:319-329. [PMID: 37402702 DOI: 10.1093/biolre/ioad068] [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: 02/01/2023] [Revised: 05/08/2023] [Accepted: 06/20/2023] [Indexed: 07/06/2023] Open
Abstract
Infertility is a public health concern worldwide. Asthenozoospermia is a common cause of male infertility and is characterized by decreased motility. Sperm motility ensures that sperm migrate to complete fertilization. Macrophages are an essential component of innate immunity in the female reproductive tract. Macrophage extracellular traps are induced by various microorganisms to capture and mediate the clearance of microorganisms. The relationship between sperm and macrophage extracellular traps is unclear. The human monocyte leukemia (THP-1) cells differentiated by phorbol myristate acetate (PMA) are widely used as surrogate of human macrophages. This study investigated sperm-induced macrophage extracellular trap formation and clarified some of the mechanisms affecting macrophage extracellular trap production. Sperm-induced macrophage extracellular traps were visualized and components of macrophage extracellular traps were identified by immunofluorescence analyses and scanning electron microscopy. By inhibiting macrophage extracellular trap production and macrophage phagocytosis, the relationship between macrophage phagocytosis and macrophage extracellular trap production was analyzed. Sperm could trigger PMA-differentiated THP-1 macrophages to produce extracellular traps. Sperm-triggered macrophage extracellular traps are dependent on phagocytosis and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase. Sperm from asthenozoospermia donors are more likely to be phagocytosed by macrophages than sperm from healthy donors, which induce more macrophage extracellular trap release. These data confirm the phenomenon and partial mechanism of sperm-induced macrophage extracellular trap formation in vitro. These may partly provide evidence to explain the mechanisms of clearing abnormally morphological or hypomotile sperm in the female reproductive tract and the rationale for the decreased probability of successful fertilization in asthenozoospermia.
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Affiliation(s)
- Chuncheng Lu
- Department of Urology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- The First Affiliated Hospital of Kunming Medical University, Yunnan Province Clinical Research Center for Chronic Kidney Disease, Kunming, China
| | - Zhao Wu
- Department of Reproductive Genetics, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Hongbin Gao
- Department of Urology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- The First Affiliated Hospital of Kunming Medical University, Yunnan Province Clinical Research Center for Chronic Kidney Disease, Kunming, China
| | - Haiyuan Li
- Department of Urology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- The First Affiliated Hospital of Kunming Medical University, Yunnan Province Clinical Research Center for Chronic Kidney Disease, Kunming, China
| | - Renbin Deng
- Department of Urology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- The First Affiliated Hospital of Kunming Medical University, Yunnan Province Clinical Research Center for Chronic Kidney Disease, Kunming, China
| | - Ning Luo
- Department of Urology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- The First Affiliated Hospital of Kunming Medical University, Yunnan Province Clinical Research Center for Chronic Kidney Disease, Kunming, China
| | - Shipeng Fan
- Department of Urology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- The First Affiliated Hospital of Kunming Medical University, Yunnan Province Clinical Research Center for Chronic Kidney Disease, Kunming, China
| | - Xi Li
- Department of Urology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- The First Affiliated Hospital of Kunming Medical University, Yunnan Province Clinical Research Center for Chronic Kidney Disease, Kunming, China
| | - Danpeng He
- Department of Urology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- The First Affiliated Hospital of Kunming Medical University, Yunnan Province Clinical Research Center for Chronic Kidney Disease, Kunming, China
| | - Hui Zhao
- Department of Urology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- The First Affiliated Hospital of Kunming Medical University, Yunnan Province Clinical Research Center for Chronic Kidney Disease, Kunming, China
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Wang X, Lin R, Fu C, Yang C, Dong D, Wu X, Chen X, Wang L, Hou J. Echinococcus granulosus cyst fluid inhibits inflammatory responses through inducing histone demethylase KDM5B in macrophages. Parasit Vectors 2023; 16:321. [PMID: 37689671 PMCID: PMC10492338 DOI: 10.1186/s13071-023-05948-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/26/2023] [Indexed: 09/11/2023] Open
Abstract
BACKGROUND Echinococcus granulosus cyst fluid (EgCF) weakens macrophage inflammatory responses, thereby enabling the parasite to evade the immune system. However, the role of histone modification in this process remains to be explored. METHODS The levels of IL-6, TNF-α, IL-10, H3K4me3, and KDM5B were detected using quantitative real-time PCR, ELISA, and Western blotting. The enrichment of H3K4me3 and KDM5B at the promoter of inflammatory factors was detected by chromatin immunoprecipitation. RESULTS Based on EgCF-stimulated macrophage models, we found that EgCF significantly inhibited mRNA expression and protein secretion of IL-6 and TNF-α and upregulated mRNA expression of IL-10 under the influence of TLR4. EgCF lowered the level of H3K4me3 and promoted the transcription and protein stability of histone demethylase KDM5B. Chromatin immunoprecipitation analysis revealed that EgCF suppressed the enrichment of H3K4me3 modification at the promoters of TNF-α and IL-6 and downregulated their expression in macrophages. Additionally, the inhibition of KDM5B activity by CPI-455 weakened the anti-inflammatory effect of EgCF. CONCLUSIONS Our findings demonstrate a novel mechanism through which EgCF promotes KDM5B expression and inhibits the enrichment of H3K4me3 at the promoters of inflammatory cytokines to suppress the inflammatory response.
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Affiliation(s)
- Xiaopeng Wang
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Ruolin Lin
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Chunxue Fu
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Chun Yang
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Dan Dong
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Xiangwei Wu
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Xueling Chen
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Lianghai Wang
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China.
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China.
| | - Jun Hou
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China.
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China.
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Tan H, Mao K, Cong X, Xin Y, Liu F, Wang J, Wang X, Han J, Zhang Y, Yang YG, Sun T. In Vivo Immune Adjuvant Effects of CaCO 3 Nanoparticles through Intracellular Ca 2+ Concentration Regulation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:39157-39166. [PMID: 37553750 DOI: 10.1021/acsami.3c07306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Calcium (Ca) is a vital component of the human body and plays a crucial role in intracellular signaling and regulation as a second messenger. Recent studies have shown that changes in intracellular Ca2+ concentration can influence immune cell function. In this study, we developed calcium carbonate nanoparticles (CaNPs) of various sizes using a Nanosystem Platform to modulate intracellular Ca2+ concentration in vitro and in vivo. Our findings demonstrate that intravenous administration of CaNPs led to changes in the number and ratio of immune cells in the spleen and stimulated the activation of dendritic cells (DCs) and macrophages. Notably, CaNPs exhibited strong adjuvant properties in the absence of antigenic stimuli. These results indicate that CaNPs have the potential to regulate immune cell function by modulating Ca2+ concentrations, offering a novel approach for disease prevention and treatment in combination with antigens or drugs. Overall, our study emphasizes the importance of modulating intracellular Ca2+ concentration as a means of regulating immune cell function.
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Affiliation(s)
- Huizhu Tan
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin 130062, China
| | - Kuirong Mao
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
- International Center of Future Science, Jilin University, Changchun, Jilin 130012, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin 130062, China
| | - Xiuxiu Cong
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin 130062, China
| | - Yanbao Xin
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin 130062, China
| | - Feiqi Liu
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
| | - Jialiang Wang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin 130062, China
| | - Xin Wang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin 130062, China
| | - Jing Han
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin 130062, China
| | - Yuning Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin 130062, China
| | - Yong-Guang Yang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
- International Center of Future Science, Jilin University, Changchun, Jilin 130012, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin 130062, China
| | - Tianmeng Sun
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin 130061, China
- International Center of Future Science, Jilin University, Changchun, Jilin 130012, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin 130062, China
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, Jilin 130012, China
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10
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Radhakrishnan A, Mukherjee T, Mahish C, Kumar PS, Goswami C, Chattopadhyay S. TRPA1 activation and Hsp90 inhibition synergistically downregulate macrophage activation and inflammatory responses in vitro. BMC Immunol 2023; 24:16. [PMID: 37391696 PMCID: PMC10314470 DOI: 10.1186/s12865-023-00549-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 06/14/2023] [Indexed: 07/02/2023] Open
Abstract
BACKGROUND Transient receptor potential ankyrin 1 (TRPA1) channels are known to be actively involved in various pathophysiological conditions, including neuronal inflammation, neuropathic pain, and various immunological responses. Heat shock protein 90 (Hsp90), a cytoplasmic molecular chaperone, is well-reported for various cellular and physiological processes. Hsp90 inhibition by various molecules has garnered importance for its therapeutic significance in the downregulation of inflammation and are proposed as anti-cancer drugs. However, the possible role of TRPA1 in the Hsp90-associated modulation of immune responses remains scanty. RESULTS Here, we have investigated the role of TRPA1 in regulating the anti-inflammatory effect of Hsp90 inhibition via 17-(allylamino)-17-demethoxygeldanamycin (17-AAG) in lipopolysaccharide (LPS) or phorbol 12-myristate 13-acetate (PMA) stimulation in RAW 264.7, a mouse macrophage cell lines and PMA differentiated THP-1, a human monocytic cell line similar to macrophages. Activation of TRPA1 with Allyl isothiocyanate (AITC) is observed to execute an anti-inflammatory role via augmenting Hsp90 inhibition-mediated anti-inflammatory responses towards LPS or PMA stimulation in macrophages, whereas inhibition of TRPA1 by 1,2,3,6-Tetrahydro-1,3-dimethyl-N-[4-(1-methylethyl)phenyl]-2,6-dioxo-7 H-purine-7-acetamide,2-(1,3-Dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7 H-purin-7-yl)-N-(4-isopropylphenyl)acetamide (HC-030031) downregulates these developments. LPS or PMA-induced macrophage activation was found to be regulated by TRPA1. The same was confirmed by studying the levels of activation markers (major histocompatibility complex II (MHCII), cluster of differentiation (CD) 80 (CD80), and CD86, pro-inflammatory cytokines (tumor necrosis factor (TNF) and interleukin 6 (IL-6)), NO (nitric oxide) production, differential expression of mitogen-activated protein kinase (MAPK) signaling pathways (p-p38 MAPK, phospho-extracellular signal-regulated kinase 1/2 (p-ERK 1/2), and phosphor-stress-activated protein kinase/c-Jun N-terminal kinase (p-SAPK/JNK)), and induction of apoptosis. Additionally, TRPA1 has been found to be an important contributor to intracellular calcium levels toward Hsp90 inhibition in LPS or PMA-stimulated macrophages. CONCLUSION This study indicates a significant role of TRPA1 in Hsp90 inhibition-mediated anti-inflammatory developments in LPS or PMA-stimulated macrophages. Activation of TRPA1 and inhibition of Hsp90 has synergistic roles towards regulating inflammatory responses associated with macrophages. The role of TRPA1 in Hsp90 inhibition-mediated modulation of macrophage responses may provide insights towards designing future novel therapeutic approaches to regulate various inflammatory responses.
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Affiliation(s)
- Anukrishna Radhakrishnan
- National Institute of Science Education and Research, an Off-campus Centre (OCC) of Homi Bhabha National Institute, Bhubaneswar, Odisha 752050 India
| | - Tathagata Mukherjee
- National Institute of Science Education and Research, an Off-campus Centre (OCC) of Homi Bhabha National Institute, Bhubaneswar, Odisha 752050 India
| | - Chandan Mahish
- National Institute of Science Education and Research, an Off-campus Centre (OCC) of Homi Bhabha National Institute, Bhubaneswar, Odisha 752050 India
| | - P Sanjai Kumar
- Institute of Life Sciences, Nalco Nagar Rd, NALCO Square, NALCO Nagar, Chandrasekharpur, Bhubaneswar, Odisha 751023 India
| | - Chandan Goswami
- National Institute of Science Education and Research, an Off-campus Centre (OCC) of Homi Bhabha National Institute, Bhubaneswar, Odisha 752050 India
| | - Subhasis Chattopadhyay
- National Institute of Science Education and Research, an Off-campus Centre (OCC) of Homi Bhabha National Institute, Bhubaneswar, Odisha 752050 India
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11
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Gil Gonzalez L, Fernandez-Marrero Y, Norris PAA, Tawhidi Z, Shan Y, Cruz-Leal Y, Won KD, Frias-Boligan K, Branch DR, Lazarus AH. THP-1 cells transduced with CD16A utilize Fcγ receptor I and III in the phagocytosis of IgG-sensitized human erythrocytes and platelets. PLoS One 2022; 17:e0278365. [PMID: 36516219 PMCID: PMC9749970 DOI: 10.1371/journal.pone.0278365] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/15/2022] [Indexed: 12/15/2022] Open
Abstract
Fc gamma receptors (FcγRs) are critical effector receptors for immunoglobulin G (IgG) antibodies. On macrophages, FcγRs mediate multiple effector functions, including phagocytosis, but the individual contribution of specific FcγRs to phagocytosis has not been fully characterized. Primary human macrophage populations, such as splenic macrophages, can express FcγRI, FcγRIIA, and FcγRIIIA. However, there is currently no widely available monocyte or macrophage cell line expressing all these receptors. Common sources of monocytes for differentiation into macrophages, such as human peripheral blood monocytes and the monocytic leukemia cell line THP-1, generally lack the expression of FcγRIIIA (CD16A). Here, we utilized a lentiviral system to generate THP-1 cells stably expressing human FcγRIIIA (CD16F158). THP-1-CD16A cells treated with phorbol 12-myristate 13-acetate for 24 hours phagocytosed anti-D-opsonized human red blood cells primarily utilizing FcγRI with a lesser but significant contribution of IIIA while phagocytosis of antibody-opsonized human platelets equally utilized FcγRI and Fcγ IIIA. Despite the well-known ability of FcγRIIA to bind IgG in cell free systems, this receptor did not appear to be involved in either RBC or platelet phagocytosis. These transgenic cells may constitute a valuable tool for studying macrophage FcγR utilization and function.
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Affiliation(s)
- Lazaro Gil Gonzalez
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto ON, Canada
| | | | - Peter Alan Albert Norris
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto ON, Canada
- Innovation and Portfolio Management, Canadian Blood Services, Ottawa, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Zoya Tawhidi
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Yuexin Shan
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto ON, Canada
| | - Yoelys Cruz-Leal
- Innovation and Portfolio Management, Canadian Blood Services, Ottawa, ON, Canada
| | - Kevin Doyoon Won
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Kayluz Frias-Boligan
- Innovation and Portfolio Management, Canadian Blood Services, Ottawa, ON, Canada
| | - Donald R. Branch
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto ON, Canada
- Innovation and Portfolio Management, Canadian Blood Services, Ottawa, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Alan H. Lazarus
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto ON, Canada
- Innovation and Portfolio Management, Canadian Blood Services, Ottawa, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Department of Medicine, University of Toronto, Toronto, ON, Canada
- * E-mail:
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12
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Oliveira MM, Bonturi CR, Salu BR, Oliva MLV, Mortara RA, Orikaza CM. Modulation of STAT-1, STAT-3, and STAT-6 activities in THP-1 derived macrophages infected with two Trypanosoma cruzi strains. Front Immunol 2022; 13:1038332. [PMID: 36389843 PMCID: PMC9643828 DOI: 10.3389/fimmu.2022.1038332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 10/04/2022] [Indexed: 12/03/2022] Open
Abstract
Trypanosoma cruzi is the causative protozoan of Chagas’ Disease, a neglected tropical disease that affects 6−7 million people worldwide. Interaction of the parasite with the host immune system is a key factor in disease progression and chronic symptoms. Although the human immune system is capable of controlling the disease, the parasite has numerous evasion mechanisms that aim to maintain intracellular persistence and survival. Due to the pronounced genetic variability of T. cruzi, co-infections or mixed infections with more than one parasite strain have been reported in the literature. The intermodulation in such cases is unclear. This study aimed to evaluate the co-infection of T. cruzi strains G and CL compared to their individual infections in human macrophages derived from THP-1 cells activated by classical or alternative pathways. Flow cytometry analysis demonstrated that trypomastigotes were more infective than extracellular amastigotes (EAs) and that strain G could infect more macrophages than strain CL. Classically activated macrophages showed lower number of infected cells and IL-4-stimulated cells displayed increased CL-infected macrophages. However, co-infection was a rare event. CL EAs decreased the production of reactive oxygen species (ROS), whereas G trypomastigotes displayed increased ROS detection in classically activated cells. Co-infection did not affect ROS production. Monoinfection by strain G or CL mainly induced an anti-inflammatory cytokine profile by decreasing inflammatory cytokines (IFN-γ, TNF-α, IL-1β) and/or increasing IL-4, IL-10, and TGF-β. Co-infection led to a predominant inflammatory milieu, with reduced IL-10 and TGF-β, and/or promotion of IFN-γ and IL-1β release. Infection by strain G reduced activation of intracellular signal transducer and activator of transcription (STAT) factors. In EAs, monoinfections impaired STAT-1 activity and promoted phosphorylation of STAT-3, both changes may prolong cell survival. Coinfected macrophages displayed pronounced activation of all STATs examined. These activations likely promoted parasite persistence and survival of infected cells. The collective results demonstrate that although macrophages respond to both strains, T. cruzi can modulate the intracellular environment, inducing different responses depending on the strain, parasite infective form, and co-infection or monoinfection. The modulation influences parasite persistence and survival of infected cells.
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Affiliation(s)
- Melissa Martins Oliveira
- ¹Microbiology, Immunology and Parasitology Department, Escola Paulista de Medicina, Federal University of São Paulo - UNIFESP, São Paulo, Brazil
| | - Camila Ramalho Bonturi
- ²Biochemistry Department, Escola Paulista de Medicina, Federal University of São Paulo - UNIFESP, São Paulo, Brazil
| | - Bruno Ramos Salu
- ²Biochemistry Department, Escola Paulista de Medicina, Federal University of São Paulo - UNIFESP, São Paulo, Brazil
| | - Maria Luiza Vilela Oliva
- ²Biochemistry Department, Escola Paulista de Medicina, Federal University of São Paulo - UNIFESP, São Paulo, Brazil
| | - Renato Arruda Mortara
- ¹Microbiology, Immunology and Parasitology Department, Escola Paulista de Medicina, Federal University of São Paulo - UNIFESP, São Paulo, Brazil
| | - Cristina Mary Orikaza
- ¹Microbiology, Immunology and Parasitology Department, Escola Paulista de Medicina, Federal University of São Paulo - UNIFESP, São Paulo, Brazil
- *Correspondence: Cristina Mary Orikaza,
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13
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Liu R, Sun X, Hu Z, Peng C, Wu T. Knockdown of long non-coding RNA MIR155HG suppresses melanoma cell proliferation, and deregulated MIR155HG in melanoma is associated with M1/M2 balance and macrophage infiltration. Cells Dev 2022; 170:203768. [DOI: 10.1016/j.cdev.2022.203768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/25/2021] [Accepted: 02/14/2022] [Indexed: 12/24/2022]
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14
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Zhang Q, Zhang W, Liu J, Yang H, Hu Y, Zhang M, Bai T, Chang F. Lysophosphatidylcholine promotes intercellular adhesion molecule-1 and vascular cell adhesion molecule-1 expression in human umbilical vein endothelial cells via an orphan G protein receptor 2-mediated signaling pathway. Bioengineered 2021; 12:4520-4535. [PMID: 34346841 PMCID: PMC8806654 DOI: 10.1080/21655979.2021.1956671] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The oxLDL-based bioactive lipid lysophosphatidylcholine (LPC) is a key regulator of physiological processes including endothelial cell adhesion marker expression. This study explored the relationship between LPC and the human umbilical vein endothelial cell expression of intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) with a particular focus on the regulation of the LPC-G2A-ICAM-1/VCAM-1 pathway in this context. We explored the LPC-inducible role of orphan G protein receptor 2 (G2A) in associated regulatory processes by using human kidney epithelial (HEK293) cells that had been transfected with pET-G2A, human umbilical vein endothelial cells (HUVECs) in which an shRNA was used to knock down G2A, and western blotting and qPCR assays that were used to confirm changes in gene expression. For in vivo studies, a rabbit model of atherosclerosis was established, with serum biochemistry and histological staining approaches being used to assess pathological outcomes in these animals. The treatment of both HEK293 cells and HUVECs with LPC promoted ICAM-1 and VCAM-1 upregulation, while incubation at a pH of 6.8 suppressed such LPC-induced adhesion marker expression. Knocking down G2A by shRNA and inhibiting NF-κB activity yielded opposite outcomes. The application of a Gi protein inhibitor had no impact on LPC-induced ICAM-1/VCAM-1 expression. Atherosclerotic model exhibited high circulating LDL and LPC levels as well as high aortic wall ICAM-1/VCAM-1 expression. Overall, these results suggested that the LPC-G2A-ICAM-1/VCAM-1 pathway may contribute to the atherogenic activity of oxLDL, with NF-κB antagonists representing potentially viable therapeutic tools for the treatment of cardiovascular disease.
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Affiliation(s)
- Qian Zhang
- The Center for New Drug Safety Evaluation and Research, Inner Mongolia Medical University, Hohhot, China.,The Center for New Drug Screening Engineering and Research of Inner Mongolia Autonomous Region, Inner Mongolia Medical University, Hohhot, China.,College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Wei Zhang
- The Center for New Drug Safety Evaluation and Research, Inner Mongolia Medical University, Hohhot, China.,The Center for New Drug Screening Engineering and Research of Inner Mongolia Autonomous Region, Inner Mongolia Medical University, Hohhot, China.,College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Jing Liu
- The Center for New Drug Safety Evaluation and Research, Inner Mongolia Medical University, Hohhot, China.,The Center for New Drug Screening Engineering and Research of Inner Mongolia Autonomous Region, Inner Mongolia Medical University, Hohhot, China.,College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Haisen Yang
- First Clinical Medical College, Inner Mongolia Medical University, Hohhot, China
| | - Yuxia Hu
- The Center for New Drug Safety Evaluation and Research, Inner Mongolia Medical University, Hohhot, China.,The Center for New Drug Screening Engineering and Research of Inner Mongolia Autonomous Region, Inner Mongolia Medical University, Hohhot, China.,College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Mengdi Zhang
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Tuya Bai
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Fuhou Chang
- The Center for New Drug Safety Evaluation and Research, Inner Mongolia Medical University, Hohhot, China.,The Center for New Drug Screening Engineering and Research of Inner Mongolia Autonomous Region, Inner Mongolia Medical University, Hohhot, China.,College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
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