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Kodali MC, Salim C, Ismael S, Lebovitz SG, Lin G, Liao FF. Characterization of exosome-mediated propagation of systemic inflammatory responses into the Central Nervous System. RESEARCH SQUARE 2024:rs.3.rs-4423565. [PMID: 38883721 PMCID: PMC11177953 DOI: 10.21203/rs.3.rs-4423565/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
The mechanisms through which systemic inflammation exerts its effect on the CNS are still not completely understood. Exosomes are small (30 to 100 nanometers) membrane-bound extracellular vesicles released by most of the mammalian cells. Exosomes play a vital role in cell-to-cell communication. This includes regulation of inflammatory responses by shuttling mRNAs, miRNAs, and cytokines both locally and systemically to the neighboring as well as distant cells to further modulate their transcriptional and/or translational states and affect the functional phenotype of those cells that have taken up these exosomes. The role of circulating blood exosomes leading to neuroinflammation during systemic inflammatory conditions was further characterized. Serum-derived exosomes from LPS-challenged mice (SDEL) were freshly isolated from the sera of the mice that were earlier treated with LPS and used to study SDEL effects on neuroinflammation. Exosomes isolated from the sera of the mice injected with saline were used as a control. In-vitro studies showed that the SDEL upregulate pro-inflammatory cytokine gene expression in the murine cell lines of microglia (BV-2), astrocytes (C8-D1A), and cerebral microvascular endothelial cells (bEnd.3). To further study their effects in-vivo, SDEL were intravenously injected into normal adult mice. Elevated mRNA expression of pro-inflammatory cytokines was observed in the brains of SDEL recipient mice. Proteomic analysis of the SDEL confirmed the increased expression of inflammatory cytokines in them. Together, these results further demonstrate and strengthen the novel role of peripheral circulating exosomes in causing neuroinflammation during systemic inflammatory conditions.
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Affiliation(s)
| | | | | | - Sarah Grace Lebovitz
- University of Tennessee College of Medicine: The University of Tennessee Health Science Center College of Medicine
| | - Geng Lin
- University of Tennessee College of Medicine: The University of Tennessee Health Science Center College of Medicine
| | - Francesca-Fang Liao
- University of Tennessee College of Medicine: The University of Tennessee Health Science Center College of Medicine
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Liu L, Li Y, Li JX, Xiao X, Wan TT, Li HH, Guo SB. ACE2 Expressed on Myeloid Cells Alleviates Sepsis-Induced Acute Liver Injury via the Ang-(1-7)-Mas Receptor Axis. Inflammation 2024; 47:891-908. [PMID: 38240986 DOI: 10.1007/s10753-023-01949-5] [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: 09/24/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 06/04/2024]
Abstract
Sepsis-induced acute liver injury (ALI) is common in intensive care units. Angiotensin-converting enzyme 2 (ACE2) plays a vital role in hepatic fibrosis and steatosis; however, its role in sepsis-induced ALI remains unclear. This study found that hepatic ACE2 expression in cecal ligation and puncture (CLP)-treated mice significantly decreased 24 h after CLP. ACE2-transgenic (TG) mice exhibited a significant improvement in CLP-induced ALI, accompanied by the inhibition of hepatocyte apoptosis, oxidative stress, and inflammation, while ACE2-knockout mice demonstrated an opposite trend. During sepsis-induced ALI, ACE2-TG could also elevate the Ang-(1-7) and Mas receptor (MasR) levels in liver tissues. Interestingly, the MasR inhibitor A779 abrogated the favorable effects of ACE2 on CLP-induced ALI. In a bone marrow transplantation experiment, the ACE2-TG transplantation group showed significantly improved inflammation and liver dysfunction, less hepatocyte apoptosis, and reduced oxidative stress after CLP compared with the wild-type transplantation group. In contrast, the ACE2-knockout group showed poor inflammatory response and liver dysfunction, significantly more hepatocyte apoptosis, and elevated oxidative stress than the wild-type transplantation group after CLP. ACE2 protects against sepsis-induced ALI by inhibiting hepatocyte apoptosis, oxidative stress, and inflammation via the Ang-(1-7)-Mas receptor axis. Thus, targeting ACE2 may be a promising novel strategy for preventing and treating sepsis-induced ALI.
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Affiliation(s)
- Lei Liu
- Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, No. 8, South Road of Worker's Stadium, Chaoyang District, Beijing, 100020, China
| | - Ya Li
- Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, No. 8, South Road of Worker's Stadium, Chaoyang District, Beijing, 100020, China
| | - Jia-Xin Li
- Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, No. 8, South Road of Worker's Stadium, Chaoyang District, Beijing, 100020, China
| | - Xue Xiao
- Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, No. 8, South Road of Worker's Stadium, Chaoyang District, Beijing, 100020, China
| | - Tian-Tian Wan
- Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, No. 8, South Road of Worker's Stadium, Chaoyang District, Beijing, 100020, China
| | - Hui-Hua Li
- Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, No. 8, South Road of Worker's Stadium, Chaoyang District, Beijing, 100020, China.
| | - Shu-Bin Guo
- Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, No. 8, South Road of Worker's Stadium, Chaoyang District, Beijing, 100020, China.
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Kundu A, Ghosh P, Bishayi B. Vitexin along with verapamil downregulates efflux pump P-glycoprotein in macrophages and potentiate M1 to M2 switching via TLR4-NF-κB-TNFR2 pathway in lipopolysaccharide treated mice. Immunobiology 2024; 229:152767. [PMID: 38103391 DOI: 10.1016/j.imbio.2023.152767] [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: 08/30/2023] [Revised: 11/22/2023] [Accepted: 11/29/2023] [Indexed: 12/19/2023]
Abstract
The lipopolysaccharide, a microbial toxin, is one of the major causative agents of sepsis. P-gp expression and its functions are altered during inflammation. LPS has been known to impair the functions of P-gp, an efflux transporter. But the effect of LPS on P-gp expression in murine peritoneal macrophages is poorly understood. Molecular docking studies reveal that vitexin is a potent substrate and verapamil a potent inhibitor of P-gp. In the present experimental study, the curative potential of vitexin as a fruit component and verapamil treated as a control inhibitor of P-gp was examined in a murine LPS sepsis model. The effects of vitexin and verapamil on P-gp expression in macrophages correlating with changes in macrophage polarization and associated functional responses during LPS induced sepsis were studied. Peritoneal macrophages of LPS (10 mg/kg body weight) challenged mice exhibited elevated levels of H2O2, superoxide, and NO in parallel with lower antioxidant activity. LPS treatment increased P-gp expression through increased TLR4/expression. However, LPS challenged mice treated with vitexin (5 mg/kg body weight) + verapamil (5 mg/kg body weight) showed higher anti-oxidant enzyme activity (SOD, CAT and GRx) resulting in reduced oxidative stress. This combination treatment also elevated TNFR2, concomitant with down-regulation of TLR4, NF-κB and P-gp expression in murine peritoneal macrophages, resulting in a switch from M1 to M2 polarisation of macrophages and reduced inflammatory responses. In conclusion, combined vitexin and verapamil treatment could be used as a promising therapy to regulate P-gp expression and protection against LPS mediated sepsis and inflammatory damages.
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Affiliation(s)
- Ayantika Kundu
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, 92 APC Road, Calcutta 700009, West Bengal, India
| | - Pratiti Ghosh
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, 92 APC Road, Calcutta 700009, West Bengal, India.
| | - Biswadev Bishayi
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, 92 APC Road, Calcutta 700009, West Bengal, India.
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Fujimoto K, Hashimoto D, Kim SW, Lee YS, Suzuki T, Nakata M, Kumegawa S, Asamura S, Yamada G. Novel erectile analyses revealed augmentable penile Lyve-1, the lymphatic marker, expression. Reprod Med Biol 2024; 23:e12570. [PMID: 38566911 PMCID: PMC10985380 DOI: 10.1002/rmb2.12570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/06/2024] [Accepted: 02/26/2024] [Indexed: 04/04/2024] Open
Abstract
Purpose The pathophysiology of penis extends to erectile dysfunction (ED) to conditions including sexually transmitted diseases (STDs) and cancer. To date, there has been little research evaluating vascular drainage from the penis. We aimed to evaluate penile blood flow in vivo and analyze its possible relationship with the lymphatic maker. Materials and Methods We established an in vivo system designed to assess the dynamic blood outflow from the corpus cavernosum (CC) by dye injection. To analyze lymphatic characteristics in the CC, the expression of Lyve-1, the key lymphatic endothelium marker, was examined by the in vitro system and lipopolysaccharide (LPS) injection to mimic the inflammatory conditions. Results A novel cavernography methods enable high-resolution morphological and functional blood drainage analysis. The expression of Lyve-1 was detected along the sinusoids. Furthermore, its prominent expression was also observed after penile LPS injection and in the erectile condition. Conclusions The current in vivo system will potentially contribute to the assessment of penile pathology from a novel viewpoint. In addition, current analyses revealed inducible Lyve-1 expression for LPS injection and the erection state, which requires further analyses on penile lymphatic system.
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Affiliation(s)
- Kota Fujimoto
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Daiki Hashimoto
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Physiology and Regenerative Medicine, Faculty of MedicineKindai UniversityOsakaJapan
| | - Sang Woon Kim
- Department of Urology, Urological Science InstituteYonsei University College of MedicineSeoulKorea
| | - Yong Seung Lee
- Department of Urology, Urological Science InstituteYonsei University College of MedicineSeoulKorea
| | - Takuya Suzuki
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Masanori Nakata
- Department of Physiology, Faculty of MedicineWakayama Medical UniversityWakayamaJapan
| | - Shinji Kumegawa
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Shinichi Asamura
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Gen Yamada
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
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Hwang YS, Lim J, Yoon HR, Park SH, Kim A, Jang JP, Cho HJ, Lee HG. Astragalus Complanatus Ethanol Attenuates Septic Shock by Exerting Anti-Inflammatory Effects on Macrophages. Int J Mol Sci 2023; 25:384. [PMID: 38203555 PMCID: PMC10778658 DOI: 10.3390/ijms25010384] [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: 11/27/2023] [Revised: 12/22/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024] Open
Abstract
Sepsis is a systemic inflammatory syndrome that results in multiple-organ failure caused by a dysregulated host immune response to microbial infection. Astragali complanati semen extract (ACSE) exhibits pharmacological activities, including antioxidant, anticancer, antiaging, and anti-diabetes effects. It is widely used in traditional medicine to treat liver and kidney diseases; however, the protective effect of ACSE on sepsis and its mechanisms are unknown. In the present study, we investigated the anti-inflammatory effects and potential mechanisms of the action of ACSE on sepsis. We show that ACSE improved survival rates in mouse models of acute sepsis induced by CLP (cecal ligation and puncture) and LPS stimulation. ACSE administration decreased aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in sepsis-induced mice. Furthermore, ACSE reduced the levels of nitric oxide (NO), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) in the serum of septic mice. ACSE treatment inhibited the expression of these proinflammatory genes in LPS-stimulated J774 macrophages. Moreover, ACSE inhibited the phosphorylation of the IκB kinase (IKK) and the nuclear translocation of p65 NF-κB by LPS stimulation in macrophages. These results reveal the mechanism underlying the protective effect of ACSE against sepsis by inhibiting NF-κB activation and suggest that ACSE could be a potential therapeutic candidate to treat acute inflammatory diseases.
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Affiliation(s)
- Yo Sep Hwang
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejeon 34141, Republic of Korea; (Y.S.H.); (J.L.); (H.R.Y.)
| | - Jeewon Lim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejeon 34141, Republic of Korea; (Y.S.H.); (J.L.); (H.R.Y.)
- Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Hyang Ran Yoon
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejeon 34141, Republic of Korea; (Y.S.H.); (J.L.); (H.R.Y.)
| | - Seong-Hoon Park
- Genetic and Epigenetic Toxicology Research Group, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea;
| | - Aeyung Kim
- Korean Medicine Application Center, Korea Institute of Oriental Medicine, Daegu 41062, Republic of Korea;
| | - Jun-Pil Jang
- Chemical Biology Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju 28116, Republic of Korea;
| | - Hee Jun Cho
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejeon 34141, Republic of Korea; (Y.S.H.); (J.L.); (H.R.Y.)
- Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Hee Gu Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejeon 34141, Republic of Korea; (Y.S.H.); (J.L.); (H.R.Y.)
- Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Yuseong-gu, Daejeon 34113, Republic of Korea
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Gan Z, Huang J, Xu M, Yuan X, Shang X, Chen X, Chen K. Micheliolide prevents estrogen deficiency-induced bone loss via inhibiting osteoclast bone resorption. Aging (Albany NY) 2023; 15:10732-10745. [PMID: 37827691 PMCID: PMC10599737 DOI: 10.18632/aging.205111] [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: 03/23/2023] [Accepted: 09/18/2023] [Indexed: 10/14/2023]
Abstract
Osteoporosis is one of the major health problems characterized by decreased bone density and increased risk of fractures. Nowadays, the treating strategies against osteoporosis are efficient, but still have some drawbacks. Micheliolide, a guaianolide sesquiterpene lactone isolated from Michelia compressa and Michelia champac, has been reported to have anti-inflammatory effects. Here, our data suggest that Micheliolide could protect mice from ovariectomy induced bone loss. According to the Micro-CT scan and histomorphometry quantification data, Micheliolide treatment inhibits excessive osteoclast bone resorption without affecting bone formation in estrogen deficiency mice. Consistently, our data suggest that Micheliolide could inhibit osteoclastogenesis in vitro. Additionally, we confirmed that Micheliolide inhibits osteoclasts formation via inhibiting P38 MAPK signaling pathway, and P79350 (a P38 agonist) could rescue this effect. In summary, our data suggest that Micheliolide could ameliorate estrogen deficiency-induced bone loss via attenuating osteoclastogenesis. Hence, Micheliolide could be used as a novel anti-resorptive agent against osteoporosis.
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Affiliation(s)
- Ziyang Gan
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - Junming Huang
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Nanchang 330000, Jiangxi, China
| | - Mingyou Xu
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - Xingshi Yuan
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - Xifu Shang
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - Xi Chen
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - Kun Chen
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
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Huerta-Canseco C, Caba M, Camacho-Morales A. Obesity-mediated Lipoinflammation Modulates Food Reward Responses. Neuroscience 2023; 529:37-53. [PMID: 37591331 DOI: 10.1016/j.neuroscience.2023.08.019] [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: 12/01/2022] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/19/2023]
Abstract
Accumulation of white adipose tissue (WAT) during obesity is associated with the development of chronic low-grade inflammation, a biological process known as lipoinflammation. Systemic and central lipoinflammation accumulates pro-inflammatory cytokines including IL-6, IL-1β and TNF-α in plasma and also in brain, disrupting neurometabolism and cognitive behavior. Obesity-mediated lipoinflammation has been reported in brain regions of the mesocorticolimbic reward circuit leading to alterations in the perception and consumption of ultra-processed foods. While still under investigation, lipoinflammation targets two major outcomes of the mesocorticolimbic circuit during food reward: perception and motivation ("Wanting") and the pleasurable feeling of feeding ("Liking"). This review will provide experimental and clinical evidence supporting the contribution of obesity- or overnutrition-related lipoinflammation affecting the mesocorticolimbic reward circuit and enhancing food reward responses. We will also address neuroanatomical targets of inflammatory profiles that modulate food reward responses during obesity and describe potential cellular and molecular mechanisms of overnutrition linked to addiction-like behavior favored by brain lipoinflammation.
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Affiliation(s)
| | - Mario Caba
- Centro de Investigaciones Biomédicas, Universidad Veracruzana, Xalapa, Mexico
| | - Alberto Camacho-Morales
- Department of Biochemistry, College of Medicine, Universidad Autónoma de Nuevo León, Monterrey, NL, Mexico; Neurometabolism Unit, Center for Research and Development in Health Sciences, Universidad Autónoma de Nuevo León, Monterrey, NL, Mexico.
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Dong S, Feng Z, Ma R, Zhang T, Jiang J, Li Y, Zhang Y, Li S, Liu X, Liu X, Meng H. Engineered Design of a Mesoporous Silica Nanoparticle-Based Nanocarrier for Efficient mRNA Delivery in Vivo. NANO LETTERS 2023; 23:2137-2147. [PMID: 36881967 DOI: 10.1021/acs.nanolett.2c04486] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
We have developed tailor-designed mesoporous silica nanoparticles (MSNPs) specifically for delivering mRNA. Our unique assembly protocol involves premixing mRNA with a cationic polymer and then electrostatically binding it to the MSNP surface. Since the key physicochemical parameters of MSNPs could influence the biological outcome, we also investigated the roles of size, porosity, surface topology, and aspect ratio on the mRNA delivery. These efforts allow us to identify the best-performing carrier, which was able to achieve efficient cellular uptake and intracellular escape while delivering a luciferase mRNA in mice. The optimized carrier remained stable and active for at least 7 days after being stored at 4 °C and was able to enable tissue-specific mRNA expression, particularly in the pancreas and mesentery after intraperitoneal injection. The optimized carrier was further manufactured in a larger batch size and found to be equally efficient in delivering mRNA in mice and rats, without any obvious toxicity.
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Affiliation(s)
- Shuwen Dong
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology, Beijing 100190, China
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
| | - Zhenhan Feng
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology, Beijing 100190, China
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Runpu Ma
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
- College of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Tianyu Zhang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Jinhong Jiang
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
| | - Yibo Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yumo Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology, Beijing 100190, China
| | - Silu Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology, Beijing 100190, China
| | - Xiao Liu
- Department of Gastroenterology, Beijing Hospital, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, National Center of Gerontology, Beijing 100730, China
| | - Xiangsheng Liu
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huan Meng
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Deficiency in TLR4 impairs regulatory B cells production induced by Schistosome soluble egg antigen. Mol Biochem Parasitol 2023; 253:111532. [PMID: 36450338 DOI: 10.1016/j.molbiopara.2022.111532] [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: 07/11/2022] [Revised: 11/12/2022] [Accepted: 11/26/2022] [Indexed: 11/29/2022]
Abstract
Regulatory B cells (Bregs) producing IL-10 have negative regulatory function. Several studies have shown the important roles for Toll-like receptor 2 (TLR2), TLR4, and TLR9 ligation in the development of Bregs. We have reported that Schistosome soluble egg antigen (SEA) induced the production of Bregs. However, it remains unclear whether such activation is via the TLR pathway. The present study showed that IL-10 and TLR4 mRNA expression in spleen B cells of significantly increased in C57BL/10 J mice spleen B cells following SEA stimulation. The level of secreted IL-10 and IL-10+ B cell proportion decreased in spleen B cells derived from TLR4-deficient C57BL/10ScNJ (TLR4-/-) mice following SEA or LPS stimulation compared with C57BL/10 J mice. The CD1dhiCD5+ B cells proportion decreased in spleen B cells of TLR4-/- mice following SEA stimulation compared with control mice. NF-κB, ERK, p38MAPK and JNK signal transduction inhibitors significantly suppressed IL-10 secretion in CD1dhiCD5+ B cells induced by SEA or LPS. The phosphorylation levels of IκBα, p65, ERK, JNK and p38 were increased in CD1dhiCD5+ B cell of C57BL/10 J mice treated with LPS or SEA. In conclusion, this study suggests that TLR4 plays a critical role in Bregs activation induced by SEA. And the TLR4-triggered NF-κB and MAPK pathways activation in CD1dhiCD5+ B cells stimulated with SEA. The findings elucidated the mechanism of SEA induction of CD1dhiCD5+ B cells and helped us to understand the immune regulation during Schistosoma japonicum infection.
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Jiang X, Xu Y, Xiang T, Zhang H, Cheng X, Yang XD, Hu H, Jiang X, Zheng Y. SESLA suppresses the activation of macrophages and dendritic cells after Gram-positive bacterial challenge. Immunopharmacol Immunotoxicol 2022; 45:213-223. [PMID: 36218392 DOI: 10.1080/08923973.2022.2134790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Secoeudesma sesquiterpenes lactone A (SESLA) is a sesquiterpene derived from Inula japonica Thunb. and is known to possess many pharmacological properties, e.g., anti-tumor and anti-inflammatory activities. However, the immunomodulatory role of SESLA in gram-positive (G+) bacterial infection is not clear. MATERIALS AND METHODS To set up a G+ bacterial infection model in vitro, we carried out a bacterial mimic (PGN or Pam3CSK4) or Methicillin-resistant Staphylococcus aureus (MRSA) stimulated experiment using macrophages or dendritic cells (DCs). ELISA and qPCR were performed to measure the expression of inflammatory cytokines. Flow cytometry was used to detect the expression of MHC II and co-stimulatory molecules on the surface of DCs. The network pharmacology was used to identify the molecular mechanism and potential targets of SESLA that are predicted to be involved in the MRSA-elicited inflammation. Western blot and dual luciferase reporter assay were adopted to certify possible molecular mechanism of SESLA. RESULTS This study demonstrated that SESLA treatment significantly reduced the levels of inflammatory cytokines stimulated by PGN, Pam3CSK4 or even MRSA in vitro, and it also reduced PGN-induced expression of MHC II and co-stimulatory molecules on the surface of DCs. Mechanistically, the inhibition of IκBα phosphorylation and the suppression of T cells activation could account for its anti-inflammatory activity. CONCLUSION The present study validated the notable anti-inflammatory activity of SESLA and discovered its previously uncharacterized immunoregulatory role and the underlying mechanism in G+ bacterial infections. Overall, SESLA has a potential to be an antibiotic adjuvant for the treatment of G+ bacterial infections.
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Affiliation(s)
- Xinru Jiang
- Department of Medical Microbiology, School of Basic Medicine, Weifang Medical University, Weifang 261053, China.,The Research Center for Traditional Chinese Medicine, Shanghai Institute of Infectious Diseases and Biosafety, Center for Immunology and Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.,Department of Immunology, School of Basic Medical Sciences, Weifang Medical University, Weifang 261053, China
| | - Yanwu Xu
- Department of Biochemistry, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Tiannan Xiang
- The Research Center for Traditional Chinese Medicine, Shanghai Institute of Infectious Diseases and Biosafety, Center for Immunology and Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Hanxiao Zhang
- Shanghai Research Institute of Acupuncture and Meridian, Shanghai 200030, China
| | - Xiaodong Cheng
- Institute of Clinical Immunology, Yue-yang Hospital of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai200083, China
| | - Xiao-Dong Yang
- The Research Center for Traditional Chinese Medicine, Shanghai Institute of Infectious Diseases and Biosafety, Center for Immunology and Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Hongyi Hu
- Department of Gastroenterology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, No.725 South Wanping Road, Shanghai 200032, China
| | - Xin Jiang
- The Research Center for Traditional Chinese Medicine, Shanghai Institute of Infectious Diseases and Biosafety, Center for Immunology and Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yuejuan Zheng
- The Research Center for Traditional Chinese Medicine, Shanghai Institute of Infectious Diseases and Biosafety, Center for Immunology and Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.,Shanghai Key Laboratory of Health Identification and Assessment, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
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11
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Acute Endotoxemia-Induced Respiratory and Intestinal Dysbiosis. Int J Mol Sci 2022; 23:ijms231911602. [PMID: 36232913 PMCID: PMC9569575 DOI: 10.3390/ijms231911602] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/09/2022] Open
Abstract
Systemic inflammatory response syndrome (SIRS) is a severe condition characterized by systemic inflammation, which may lead to multiple organ failure, shock and death. SIRS is common in burn patients, pancreatitis and sepsis. SIRS is often accompanied by intestinal dysbiosis. However, the mechanism, role and details of microbiome alterations during the early phase of acute SIRS are not completely understood. The current study aimed to characterize the dynamic alterations of both the intestinal and respiratory microbiome at two timepoints during the early phase of acute SIRS (4 and 8 h after LPS) and link these to the host response in a mouse model of a LPS-induced lethal SIRS. Acute SIRS had no effect on the microbiome in the large intestine but induced a rapid dysbiosis in the small intestine, which resembled the microbiome alterations commonly observed in SIRS patients. Later in the disease progression, a dysbiosis of the respiratory microbiome was observed, which was associated with the MMP9 expression in the lungs. Although similar bacteria were increased in both the lung and the small intestine, no evidence for a gut-lung translocation was observed. Gut dysbiosis is commonly observed in diseases involving inflammation in the gut. However, whether the inflammatory response associated with SIRS and sepsis can directly cause gut dysbiosis was still unclear. In the current study we provide evidence that a LPS-induced SIRS can directly cause dysbiosis of the small intestinal and respiratory microbiome.
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Sesquiterpene Lactones and Cancer: New Insight into Antitumor and Anti-inflammatory Effects of Parthenolide-Derived Dimethylaminomicheliolide and Micheliolide. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:3744837. [PMID: 35898475 PMCID: PMC9313921 DOI: 10.1155/2022/3744837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/24/2022] [Accepted: 06/25/2022] [Indexed: 12/28/2022]
Abstract
Applied science nowadays works on the isolation and application of biological macromolecules (BMM). These BMM are isolates from plants using different techniques and used as anticancer, antimicrobial, and anti-inflammatory drugs. Parthenolide (PLT) is one of the most important biological macromolecules and a naturally occurring sesquiterpene lactone that is isolated from a plant species Tanacetum parthenium (T. parthenium). The anti-cancer and anti-inflammatory effects of PTL isolated from T. parthenium were previously reported and summarized in detail. These biological activities make it a vital candidate for further researches and drugs development. As per the previously obtained findings, the sesquiterpene is very much known for some biological activities; therefore, the anti-cancer and anti-inflammatory activities of the sesquiterpene were critically reviewed. During the research process, PTL was found to be unstable in both acidic and basic conditions with low solubility, so structurally related compounds micheliolide (MCL) and Dimethylaminomicheliolide (DMAMCL) (a prodrug of MCL) were developed. In this article, we briefly review the therapeutic effects of PTL and its derivative DMAPT on inflammatory diseases and tumors, focusing on the current application of PTL in targeted therapy and combination therapy, together with anti-inflammatory and anti-tumor functions of MCL and DMAMCL. The uniqueness of this biological macromolecule is not to harm the normal cell but target the cancerous cells. Therefore, the current literature review might be helpful and useful for prospects based on the effects of MCL and DMAMCL on cancer.
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Pharmacological Inhibition of Spleen Tyrosine Kinase Suppressed Neuroinflammation and Cognitive Dysfunction in LPS-Induced Neurodegeneration Model. Cells 2022; 11:cells11111777. [PMID: 35681471 PMCID: PMC9179326 DOI: 10.3390/cells11111777] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/23/2022] [Accepted: 05/26/2022] [Indexed: 02/04/2023] Open
Abstract
Tyrosine-protein kinase (Syk) plays a potential role in neuroinflammation and adaptive immune responses in several neurodegenerative conditions. Seeing the significant role of Syk in the pathophysiology of neurodegeneration, several pharmacological inhibitors have been developed. One of the known inhibitors of Syk is BAY61-3606, which has shown efficacies in Alzheimer’s disease (AD) through regulating amyloid production. However, little is known about its efficacies in neuroinflammation and neurodegeneration. Our finding showed that Syk expression was up-regulated by lipopolysaccharide (LPS)-dependent manner, and BAY61-3606 significantly suppressed the activated microglia (ionized calcium-binding adaptor molecule 1 [Iba-1]) and the inflammatory cytokines (tumor necrosis factor-alpha [TNF-α], interleukin 1-beta [IL-1β], IL-6) and other inflammatory mediators (nuclear factor kappa B [NF-κB], cyclooxygenase-2 [Cox-2], and inducible nitric axide synthase [iNOS]) in the lipopolysaccharide (LPS)-treated in vivo and in vitro models. Moreover, BAY61-3606 significantly reduced microglia-mediated neuronal cell death by regulating the expression of Cytochrome C and Bim (B-cell lymphoma 2 [BCL-2] interacting mediator of cell death) in the LPS-treated mice brain and HT22 cells. Furthermore, the expression of synaptic markers, synaptosomal-associated protein, 25 kDa (SNAP25), synaptophysin (Syp), and postsynaptic density protein-95 (PSD95) in LPS-challenged mice showed that BAY61-3606 significantly recovered the synaptic markers. Finally, we have analyzed the effects of BAY61-3606 against memory and cognitive dysfunctions in the LPS injected mice. The Y-maze test and Passive avoidance test suggested that BAY61-3606 significantly protected against LPS-induced cognitive and memory dysfunctions. The current findings not only highlight the mechanisms of Syk in the pathophysiology of neuro-inflammation, but also support the therapeutic efficacy of BAY61-3606 in the management of neurodegeneration.
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Balkrishna A, Solleti SK, Singh H, Sharma N, Varshney A. Withanolides from Withania somnifera Ameliorate Neutrophil Infiltration in Endotoxin-Induced Peritonitis by Regulating Oxidative Stress and Inflammatory Cytokines. PLANTA MEDICA 2022; 88:466-478. [PMID: 33862643 DOI: 10.1055/a-1438-2816] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Identification of novel anti-inflammatory strategies are needed to avoid the side effects associated with the currently available therapies. Use of anti-inflammatory herbal remedies is gaining attention. The purpose of the present investigation was to evaluate the pharmacological potential of the withanolide-rich root extracts of the medical plant Withania somnifera (L.) Dunal using in vivo and in vitro models of endotoxin-induced inflammation and oxidative stress. The pharmacological effects of W. somnifera root extracts were evaluated using a mouse model of endotoxin (lipopolysaccharide)-induced peritonitis and various relevant human cell lines. HPLC analysis of the W. somnifera root extracts identified the presence of various bioactive withanolides. In vivo challenge of mice with endotoxin resulted in the infiltration of various leukocytes, specifically neutrophils, along with monocytes and lymphocytes into the peritoneal cavity. Importantly, prophylactic treatment with W. somnifera inhibited the migration of neutrophils, lymphocytes, and monocytes and decreased the release of interleukin-1β, TNF-α, and interleukin-6 cytokines into the peritoneal cavity as identified by ELISA. Liver (glutathione peroxidase, glutathione, glutathione disulfide, superoxide dismutase, malondialdehyde, myeloperoxidase) and peritoneal fluid (nitrite) biochemical analysis revealed the antioxidant profile of W. somnifera. Similarly, in human HepG2 cells, W. somnifera significantly modulated the antioxidant levels. In THP-1 cells, W. somnifera decreased the secretion of interleukin-6 and TNF-α. In HEK-Blue reporter cells, W. somnifera inhibited TNF-α-induced nuclear factor-κB/activator protein 1 transcriptional activity. Our findings suggest the pharmacological effects of root extracts of W. somnifera rich in withanolides inhibit neutrophil infiltration, oxidative hepatic damage, and cytokine secretion via modulating the nuclear factor-κB/activator protein 1 pathway.
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Affiliation(s)
- Acharya Balkrishna
- Drug Discovery and Development Division, Patanjali Research Institute, Haridwar, Uttarakhand, India
- Department of Allied and Applied Sciences, University of Patanjali, Patanjali Yog Peeth, Haridwar, Uttarakhand, India
- Patanjali UK Trust, Glasgow, Scotland, United Kingdom
| | - Siva Kumar Solleti
- Drug Discovery and Development Division, Patanjali Research Institute, Haridwar, Uttarakhand, India
| | - Hoshiyar Singh
- Drug Discovery and Development Division, Patanjali Research Institute, Haridwar, Uttarakhand, India
| | - Niti Sharma
- Drug Discovery and Development Division, Patanjali Research Institute, Haridwar, Uttarakhand, India
| | - Anurag Varshney
- Drug Discovery and Development Division, Patanjali Research Institute, Haridwar, Uttarakhand, India
- Department of Allied and Applied Sciences, University of Patanjali, Patanjali Yog Peeth, Haridwar, Uttarakhand, India
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15
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Kim YN, Sim KS, Park S, Sohn HY, Kim T, Kim JH. In Vitro and In Vivo Anti-Inflammatory Effects of Cannabis sativa Stem Extract. J Med Food 2022; 25:408-417. [PMID: 35438555 DOI: 10.1089/jmf.2021.k.0200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
With growing scientific interest in cannabinoids, a number of studies have focused on biological activities of cannabidiol and its major source, inflorescence and leaf of Cannabis sativa plant. However, recent analytical chemistry studies have reported the pharmacological significance of non-cannabinoid phytochemicals that are rich in other parts of the plant. Thus, the objective of this study was to investigate the anti-inflammatory effects of Cannabis extracts from plant parts of shelled seeds, roots, and stems containing no or trace amounts of cannabinoids. Among water and ethanol extracts from three plant parts, Cannabis stem ethanol extract (CSE) had the most potent free radical scavenging activities and suppressive effects on the production of nitric oxide from macrophages. In further studies using macrophages, CSE effectively inhibited lipopolysaccharide (LPS)-induced inflammatory responses by suppressing proinflammatory cytokines, nuclear factor-κB and mitogen-activated protein kinase phosphorylations, and cellular accumulation of reactive oxygen species. Moreover, in mice exposed to LPS, CSE reduced tumor necrosis factor-α production and normalized activations of proapoptotic proteins in the liver, kidney, and spleen. Gas chromatography/mass spectrometry analyses of CSE showed several active compounds that might be associated with its antioxidant and anti-inflammatory effects. Collectively, these findings indicate that CSE counteracts LPS-induced acute inflammation and apoptosis, suggesting pharmaceutical applications for the stem part of C. sativa.
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Affiliation(s)
- Ye Na Kim
- Department of Vaccine Development, Gyeongbuk Institute for Bio-industry, Andong, Republic of Korea
| | - Kyu Sang Sim
- Biomaterials Research Institute, Kyochon F&B, Andong, Republic of Korea
| | - Song Park
- Department of Food Science and Biotechnology, Andong National University, Andong, Republic of Korea
| | - Ho-Yong Sohn
- Department of Food and Nutrition, Andong National University, Andong, Republic of Korea
| | - Taewan Kim
- Department of Food Science and Biotechnology, Andong National University, Andong, Republic of Korea
| | - Jun Ho Kim
- Department of Food Science and Biotechnology, Andong National University, Andong, Republic of Korea
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Antunes GL, Matzenbacher LS, Costa BP, de Sousa Basso B, Levorse VGS, Antunes KH, Costa-Ferro ZSM, de Oliveira JR. Methoxyeugenol Protects Against Lung Inflammation and Suppresses Neutrophil Extracellular Trap Formation in an LPS-Induced Acute Lung Injury Model. Inflammation 2022; 45:1534-1547. [PMID: 35267122 DOI: 10.1007/s10753-022-01639-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 12/27/2021] [Accepted: 01/26/2022] [Indexed: 12/20/2022]
Abstract
Acute lung injury (ALI) is a life-threatening acute inflammatory disease with high rates of morbidity and mortality worldwide. 4-Allyl-2,6-dimethoxyphenol (methoxyeugenol), a phenylpropanoid from a synthetic source, exhibits strong anti-inflammatory activity, but its effects on the inflammation of ALI have not yet been reported. In our study, the anti-inflammatory effects of methoxyeugenol were investigated on RAW 264.7 cells and a mice model of ALI. Our results showed that methoxyeugenol (7.5 and 30 µM) attenuated the proliferation and gene expression of interleukin (IL)-6 in LPS-stimulated RAW 264.7 cells. In a mice model of ALI induced with LPS, methoxyeugenol exhibited a significant protective effect, based on influx reduction of macrophages and neutrophils into the lungs; reduction in release of the cytokines IL-6, TNF-α, and IL-10; and in reactive oxygen species (ROS) formation. We show that the anti-inflammatory effects of methoxyeugenol are associated with the suppression of the NFκB signaling pathway. Moreover, we demonstrated for the first time that a phenolic compound, from a synthetic source, protects against lung tissue inflammation and promotes a reduction of NET formation. These findings provided evidence for the use of methoxyeugenol as a new strategy to control inflammation in ALI disease.
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Affiliation(s)
- Géssica Luana Antunes
- Laboratory of Cellular Biophysics and Inflammation, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), 6690 Ipiranga Ave, Porto Alegre, RS, 90610-000, Brazil.
| | - Lucas Strassburger Matzenbacher
- Laboratory of Cellular Biophysics and Inflammation, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), 6690 Ipiranga Ave, Porto Alegre, RS, 90610-000, Brazil
| | - Bruna Pasqualotto Costa
- Laboratory of Cellular Biophysics and Inflammation, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), 6690 Ipiranga Ave, Porto Alegre, RS, 90610-000, Brazil
| | - Bruno de Sousa Basso
- Laboratory of Cellular Biophysics and Inflammation, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), 6690 Ipiranga Ave, Porto Alegre, RS, 90610-000, Brazil
| | - Vitor Giancarlo Schneider Levorse
- Laboratory of Cellular Biophysics and Inflammation, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), 6690 Ipiranga Ave, Porto Alegre, RS, 90610-000, Brazil
| | - Krist Helen Antunes
- Laboratory of Clinical and Experimental Immunology, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, Brazil
| | - Zaquer Suzana Munhoz Costa-Ferro
- Brain Institute of Rio Grande Do Sul (BraIns), Pontifical Catholic University of Rio Grande Do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Jarbas Rodrigues de Oliveira
- Laboratory of Cellular Biophysics and Inflammation, Pontifical Catholic University of Rio Grande Do Sul (PUCRS), 6690 Ipiranga Ave, Porto Alegre, RS, 90610-000, Brazil
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17
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Song YC, Liu CT, Lee HJ, Yen HR. Cordycepin prevents and ameliorates experimental autoimmune encephalomyelitis by inhibiting leukocyte infiltration and reducing neuroinflammation. Biochem Pharmacol 2022; 197:114918. [DOI: 10.1016/j.bcp.2022.114918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 11/30/2022]
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18
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PPARγ Alleviates Sepsis-Induced Liver Injury by Inhibiting Hepatocyte Pyroptosis via Inhibition of the ROS/TXNIP/NLRP3 Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1269747. [PMID: 35136484 PMCID: PMC8818407 DOI: 10.1155/2022/1269747] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 09/26/2021] [Accepted: 12/01/2021] [Indexed: 12/24/2022]
Abstract
Sepsis is a systemic inflammatory response syndrome caused by a dysregulated host response to infection. Peroxisome proliferator-activated receptor gamma (PPARγ) exerts anti-inflammatory and antioxidative properties. To investigate the potential effects of PPARγ on sepsis-induced liver injury and determine the related mechanisms, C57BL/6 male mice were subjected to cecal ligation and puncture (CLP) to create a sepsis model which was treated with GW1929 or GW9662 to upregulate or downregulate the expression of PPARγ. We found that upregulation of PPARγ decreased the serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), total bilirubin (TBIL), and liver pathological damage and improved the 5-day survival rate. Increased expression of PPARγ also decreased sepsis-induced reactive oxygen species (ROS) by promoting the expression of Nrf2. In addition, upregulated PPARγ inhibited the expression of the TXNIP/NLRP3 signaling pathway by reducing ROS-induced injury in the liver during sepsis, which further reduced NLRP3-mediated pyroptosis and the inflammatory response. The role of PPARγ was further examined in in vitro experiments, where lipopolysaccharide- (LPS-) treated HepG2 and Hep3B cells were incubated with GW1929 or GW9662 to upregulate or downregulate the expression of PPARγ. We found that upregulated PPARγ ameliorated LDH release and improved cell viability. Our results indicated that increased expression of PPARγ reduced ROS levels and inhibited the TXNIP/NLRP3 signaling pathway, resulting in decreased pyroptosis and reduced liver dysfunction during sepsis.
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Wu DM, Li J, Shen R, Li J, Yu Y, Li L, Deng SH, Liu T, Zhang T, Xu Y, Wang DG. Autophagy Induced by Micheliolide Alleviates Acute Irradiation-Induced Intestinal Injury via Inhibition of the NLRP3 Inflammasome. Front Pharmacol 2022; 12:773150. [PMID: 35115927 PMCID: PMC8804324 DOI: 10.3389/fphar.2021.773150] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/20/2021] [Indexed: 01/02/2023] Open
Abstract
Radiation-induced enteropathy (RIE) is one of the most common and fatal complications of abdominal radiotherapy, with no effective interventions available. Pyroptosis, a form of proinflammatory regulated cell death, was recently found to play a vital role in radiation-induced inflammation and may represent a novel therapeutic target for RIE. To investigate this, we found that micheliolide (MCL) exerted anti-radiation effects in vitro. Therefore, we investigated both the therapeutic effects of MCL in RIE and the possible mechanisms by which it may be therapeutic. We developed a mouse model of RIE by exposing C57BL/6J mice to abdominal irradiation. MCL treatment significantly ameliorated radiation-induced intestinal tissue damage, inflammatory cell infiltration, and proinflammatory cytokine release. In agreement with these observations, the beneficial effects of MCL treatment in RIE were abolished in Becn1+/− mice. Furthermore, super-resolution microscopy revealed a close association between NLR pyrin domain three and lysosome-associated membrane protein/light chain 3-positive vesicles following MCL treatment, suggesting that MCL facilitates phagocytosis of the NLR pyrin domain three inflammasome. In summary, MCL-mediated induction of autophagy can ameliorate RIE by NLR pyrin domain three inflammasome degradation and identify MCL as a novel therapy for RIE.
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Affiliation(s)
- Dong-ming Wu
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
- The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Jing Li
- The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Rong Shen
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Jin Li
- The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Ye Yu
- The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Li Li
- The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Shi-hua Deng
- The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Teng Liu
- The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Ting Zhang
- The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Ying Xu
- The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
- *Correspondence: Ying Xu, ; De-gui Wang,
| | - De-gui Wang
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
- *Correspondence: Ying Xu, ; De-gui Wang,
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Xie L, Huang W, Li J, Chen G, Xiao Q, Zhang Y, He H, Wang Q, He J. The protective effects and mechanisms of modified Lvdou Gancao decoction on acute alcohol intoxication in mice. JOURNAL OF ETHNOPHARMACOLOGY 2022; 282:114593. [PMID: 34480998 DOI: 10.1016/j.jep.2021.114593] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/02/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Acute alcohol intoxication (AAI) is a ubiquitous emergency worldwide, whereas the searching for both effective and safe drugs is still a task to be completed. Modified Lvdou Gancao decoction (MLG), a traditional Chinese medicine decoction, has been confirmed to be valid to alcohol-induced symptoms and hepatotoxicity clinically, whereas its protective mechanisms have not been determined. MATERIALS AND METHODS AAI mice model was established by alcohol gavage (13.25 mL/kg) and MLG (5, 10, 20 g/kg BW) was administered to mice 2 h before and 30 min after the alcohol exposure. Assay kits for alcohol dehydrogenase (ADH), aldehyde dehydrogenase (ALDH), aspartate aminotransferase (AST), alanine aminotransferase (ALT), glutamine transferase (GGT), total superoxide dismutase (T-SOD), malondialdehyde (MDA), nitric oxide (NO), and glutathione peroxidase (GSH-Px), as well as histopathology were used to explore the effects of MLG on acute alcohol-induced intoxication and hepatotoxicity. Mechanisms of MLG on oxidative stress and inflammatory were evaluated with RT-qPCR and Western Blot. RESULTS MLG remarkably decreased the drunkenness rate, prolonged the tolerance time and shortened the sober-up time of AAI mice. After acute alcohol exposure, MLG treatment induced significant increment of ADH, ALDH, T-SOD and GSH-Px activities in liver, while serum ALT, AST, GGT and NO levels as well as hepatic MDA activity were reduced, in a dose-dependent manner. In contrast to the model group, the mRNA expression of TNFα, IL-1β and NF-κB in the MLG treated groups had a downward trend while the Nrf-2 showed an upward trend simultaneously. Furthermore, the protein levels of p65, p-p65, p-IκBα in the MLG treated groups were considerably diminished, with HO-1 and Nrf2 elevated. To sum up, our results suggested that MLG could efficaciously ameliorate AAI via accelerating the metabolism of alcohol, alleviating acute hepatotoxicity, and weakening the oxidative stress coupled with inflammation response, which might be attributed to the inhibition of the NF-κB signaling pathway and the activation of the Nrf2/HO-1 signaling pathway. CONCLUSIONS Taken together, our present study verified the protective effect and mechanisms of MLG to AAI mice, and we further conclude that MLG may be a potent and reliable candidate for the prevention and treatment of AAI.
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Affiliation(s)
- Lei Xie
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong, China.
| | - Wenguan Huang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong, China.
| | - Junlin Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong, China.
| | - Guirong Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong, China.
| | - Qiao Xiao
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong, China.
| | - Yan Zhang
- First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong, China.
| | - Haolan He
- Guangzhou Eighth People's Hospital, Guangzhou, 510080, Guangdong, China.
| | - Qi Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong, China.
| | - Jinyang He
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong, China.
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21
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Zhang X, Ye L, Liang G, Tang W, Yao L, Huang C. Different microRNAs contribute to the protective effect of mesenchymal stem cell-derived microvesicles in LPS induced acute respiratory distress syndrome. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2021; 24:1702-1708. [PMID: 35432797 PMCID: PMC8976904 DOI: 10.22038/ijbms.2021.56433.12640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 11/27/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The present study aimed to determine whether bone marrow mesenchymal stem cell-derived microvesicles (MSC MVs) were effective in restoring lung tissue structure, and to assess the potential role of miRNAs in the pathogenesis and progression of acute respiratory distress syndrome (ARDS). MATERIALS AND METHODS ARDS was induced by lipopolysaccharide in male C57BL/6 mice. The degree of lung injury was assessed by histological analysis, lung's wet weight/body weight, and protein levels in the bronchoalveolar lavage fluid (BALF). Sequencing was performed on the BGISEQ-500 platform. Differentially expressed miRNAs (DEMs) were screened with the DEGseq software. The target genes of DEMs were predicted by iRNAhybrid, miRanda, and TargetScan. RESULTS Compared with LPS-injured mice, MSC MVs reduced lung water and total protein levels in the BALF, demonstrating a protective effect. 52 miRNAs were differentially expressed following treatment with MSC MVs in ARDS mice. Among them, miR-532-5p, miR-223-3p, and miR-744-5p were significantly regulated. Gene Ontology (GO) function and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses revealed the target genes were mainly located in the cell, organelle, and membrane. Furthermore, KEGG pathways such as ErbB, PI3K-Akt, Ras, MAPK, Toll, and Wnt signaling pathways were the most significant pathways enriched by the target genes. CONCLUSION MSC MVs treatment was involved in alleviating lung injury and promoting lung tissue repair by dysregulated miRNAs.
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Affiliation(s)
- Xingcai Zhang
- Department of Anesthesiology, Ningbo First Hospital, No. 59 Liuting Street, Haishu District, Ningbo 315010, Zhejiang, China
| | - Lifang Ye
- Department of Anesthesiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Guojin Liang
- Department of Anesthesiology, Ningbo First Hospital, No. 59 Liuting Street, Haishu District, Ningbo 315010, Zhejiang, China
| | - Wan Tang
- Department of Anesthesiology, Ningbo First Hospital, No. 59 Liuting Street, Haishu District, Ningbo 315010, Zhejiang, China
| | - Lifeng Yao
- Department of Anesthesiology, Ningbo First Hospital, No. 59 Liuting Street, Haishu District, Ningbo 315010, Zhejiang, China
| | - Changshun Huang
- Department of Anesthesiology, Ningbo First Hospital, No. 59 Liuting Street, Haishu District, Ningbo 315010, Zhejiang, China,Corresponding author: Changshun Huang. Department of Anesthesiology, Ningbo First Hospital, No. 59 Liuting Street, Haishu District, Ningbo 315010, Zhejiang, China. Tel/ Fax: +86-13957882779;
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22
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Yin J, Sun W, Yu X, Xiao X, Li B, Tong Z, Ke L, Mao W, Li W. Lacticaseibacillus rhamnosus TR08 alleviated intestinal injury and modulated microbiota dysbiosis in septic mice. BMC Microbiol 2021; 21:249. [PMID: 34536996 PMCID: PMC8449483 DOI: 10.1186/s12866-021-02317-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 09/14/2021] [Indexed: 11/29/2022] Open
Abstract
Background Probiotics are widely used in intestinal microbiota imbalance caused by sepsis, however, the protective mechanism is still unclear. This study aimed to explore protective effect of Lacticaseibacillus rhamnosus TR08 on intestinal injury in septic mice. Results The levels of serum inflammatory factors were reduced significantly in septic mice treated with L. rhamnosus TR08. The levels of sIgA in terminal ileum were significantly higher in probiotic treatment group than sepsis group. Intestinal pathological damage in septic mice improved and the expression of tight junction proteins increased after probiotic treatment. Sequencing of fecal microbiota showed that the abundance and diversity of probiotic treatment group were significantly better than those of sepsis group, and beneficial bacteria increased while some bacteria decreased in the phylum level. Conclusion L. rhamnosus TR08 could improve the integrity of intestinal barrier, enhance the intestinal mucosal immunity in septic mice, and rebalance the intestinal microecosystem.
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Affiliation(s)
- Jiangtao Yin
- Department of Critical Care Medicine, Jinling Hospital of Nanjing Medical University, 305 East Zhongshan Road, Nanjing, 225001, China.,Department of Critical Care Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Wen Sun
- Department of Critical Care Medicine, Jurong Hospital Affiliated to Jiangsu University, Zhenjiang, China
| | - Xianqiang Yu
- Southeast University School of Medicine, Nanjing, China
| | - Xiaojia Xiao
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Baiqiang Li
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Zhihui Tong
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Lu Ke
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Wenjian Mao
- Department of Critical Care Medicine, Jinling Hospital of Nanjing Medical University, 305 East Zhongshan Road, Nanjing, 225001, China.
| | - Weiqin Li
- Department of Critical Care Medicine, Jinling Hospital of Nanjing Medical University, 305 East Zhongshan Road, Nanjing, 225001, China. .,Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China.
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23
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Mvubu NE, Chiliza TE. Exploring the Use of Medicinal Plants and Their Bioactive Derivatives as Alveolar NLRP3 Inflammasome Regulators during Mycobacterium tuberculosis Infection. Int J Mol Sci 2021; 22:ijms22179497. [PMID: 34502407 PMCID: PMC8431520 DOI: 10.3390/ijms22179497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/01/2021] [Accepted: 08/19/2021] [Indexed: 12/12/2022] Open
Abstract
Mycobacterium tuberculosis, the causative agent of tuberculosis (TB), is a successful intracellular pathogen that is responsible for the highest mortality rate among diseases caused by bacterial infections. During early interaction with the host innate cells, M. tuberculosis cell surface antigens interact with Toll like receptor 4 (TLR4) to activate the nucleotide-binding domain, leucine-rich-repeat containing family, pyrin domain-containing 3 (NLRP3) canonical, and non-canonical inflammasome pathways. NLRP3 inflammasome activation in the alveoli has been reported to contribute to the early inflammatory response that is needed for an effective anti-TB response through production of pro-inflammatory cytokines, including those of the Interleukin 1 (IL1) family. However, overstimulation of the alveolar NLRP3 inflammasomes can induce excessive inflammation that is pathological to the host. Several studies have explored the use of medicinal plants and/or their active derivatives to inhibit excessive stimulation of the inflammasomes and its associated factors, thus reducing immunopathological response in the host. This review describes the molecular mechanism of the NLRP3 inflammasome activation in the alveoli during M. tuberculosis infection. Furthermore, the mechanisms of inflammasome inhibition using medicinal plant and their derivatives will also be explored, thus offering a novel perspective on the alternative control strategies of M. tuberculosis-induced immunopathology.
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24
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Nishi K, Ito T, Kadota A, Ishida M, Nishiwaki H, Fukuda N, Kanamoto N, Nagata Y, Sugahara T. Aqueous Extract from Leaves of Citrus unshiu Attenuates Lipopolysaccharide-Induced Inflammatory Responses in a Mouse Model of Systemic Inflammation. PLANTS 2021; 10:plants10081708. [PMID: 34451753 PMCID: PMC8399385 DOI: 10.3390/plants10081708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/16/2021] [Accepted: 08/16/2021] [Indexed: 12/15/2022]
Abstract
Inflammation is related to various life-threatening diseases including cancer, neurodegenerative diseases, and metabolic syndrome. Because macrophages are prominent inflammatory cells, regulation of macrophage activation is a key issue to control the onset of inflammation-associated diseases. In this study, we aimed to evaluate the potential anti-inflammatory activity of Citrus unshiu leaf extract (CLE) and to elucidate the mechanism underlying its anti-inflammatory effect. We found the inhibitory activity of CLE on the secretion of proinflammatory cytokines and a chemokine from mouse macrophage-like RAW 264.7 cells and mouse peritoneal macrophages. The inhibitory activity of CLE was attributed to downregulated JNK, p38 MAPK, and NF-κB signaling pathways, leading to suppressed gene expression of inflammation-associated proteins. Oral administration of CLE significantly decreased the serum level of proinflammatory cytokines IL-6 and TNFα and increased that of anti-inflammatory cytokine IL-10 in lipopolysaccharide-induced systemic inflammation mice. In addition, oral administration of CLE decreased secretion and gene expression of several proinflammatory proteins in the liver and spleen of the model mice. Overall results revealed that C. unshiu leaf is effective to attenuate inflammatory responses in vitro and in vivo.
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Affiliation(s)
- Kosuke Nishi
- Department of Bioscience, Graduate School of Agriculture, Ehime University, Ehime, Matsuyama 790-8566, Japan; (K.N.); (T.I.); (M.I.); (H.N.)
- Food and Health Sciences Research Center, Ehime University, Ehime, Matsuyama 790-8566, Japan
| | - Takako Ito
- Department of Bioscience, Graduate School of Agriculture, Ehime University, Ehime, Matsuyama 790-8566, Japan; (K.N.); (T.I.); (M.I.); (H.N.)
| | - Ayumu Kadota
- Ikata Service Inc., Ikata, Ehime, Matsuyama 796-0421, Japan;
| | - Momoko Ishida
- Department of Bioscience, Graduate School of Agriculture, Ehime University, Ehime, Matsuyama 790-8566, Japan; (K.N.); (T.I.); (M.I.); (H.N.)
| | - Hisashi Nishiwaki
- Department of Bioscience, Graduate School of Agriculture, Ehime University, Ehime, Matsuyama 790-8566, Japan; (K.N.); (T.I.); (M.I.); (H.N.)
| | - Naohiro Fukuda
- Ehime Institute of Industrial Technology, Matsuyama, Ehime, Matsuyama 790-1101, Japan; (N.F.); (N.K.); (Y.N.)
| | - Naoaki Kanamoto
- Ehime Institute of Industrial Technology, Matsuyama, Ehime, Matsuyama 790-1101, Japan; (N.F.); (N.K.); (Y.N.)
| | - Yoko Nagata
- Ehime Institute of Industrial Technology, Matsuyama, Ehime, Matsuyama 790-1101, Japan; (N.F.); (N.K.); (Y.N.)
| | - Takuya Sugahara
- Department of Bioscience, Graduate School of Agriculture, Ehime University, Ehime, Matsuyama 790-8566, Japan; (K.N.); (T.I.); (M.I.); (H.N.)
- Food and Health Sciences Research Center, Ehime University, Ehime, Matsuyama 790-8566, Japan
- Correspondence: ; Tel.: +81-89-946-9863
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25
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Kodali MC, Chen H, Liao FF. Temporal unsnarling of brain's acute neuroinflammatory transcriptional profiles reveals panendothelitis as the earliest event preceding microgliosis. Mol Psychiatry 2021; 26:3905-3919. [PMID: 33293688 PMCID: PMC7722246 DOI: 10.1038/s41380-020-00955-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/28/2020] [Accepted: 11/05/2020] [Indexed: 12/15/2022]
Abstract
Sepsis-associated encephalopathy (SAE) is an acutely progressing brain dysfunction induced by systemic inflammation. The mechanism of initiation of neuroinflammation during SAE, which ultimately leads to delirium and cognitive dysfunction, remains elusive. We aimed to study the molecular events of SAE to capture its onset and progression into the central nervous system (CNS), and further identify the cellular players involved in mediating acute inflammatory signaling. Gene expression profiling on the cerebral vessels isolated from the brains of the mice treated with peripheral lipopolysaccharide (LPS) revealed that the cerebral vasculature responds within minutes to acute systemic inflammation by upregulating the expression of immediate early response genes, followed by activation of the nuclear factor-κB pathway. To identify the earliest responding cell type, we used fluorescence-activated cell sorting (FACS) to sort the glial and vascular cells from the brains of the mice treated with LPS at different time points, and RNA-seq was performed on microglia and cerebral endothelial cells (CECs). Bioinformatic analysis followed by further validation in all the cell types revealed that panendothelitis. i.e., the activation of CECs is the earliest event in the CNS during the inception of acute neuroinflammation. Microglial activation occurs later than that of CECs, suggesting that CECs are the most likely initial source of proinflammatory mediators, which could further initiate glial cell activation. This is then followed by the activation of apoptotic signaling in the CECs, which is known to lead to the blood-brain barrier disruption and allow peripheral cytokines to leak into the CNS, exacerbate the gliosis, and result in the vicious neuroinflammatory cascade. Together, our results model the earliest sequential events during the advancement of systemic inflammation into the CNS and facilitate to understand the interplay between the vascular and glial cells in initiating and driving acute neuroinflammation during SAE.
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Affiliation(s)
- Mahesh Chandra Kodali
- Department of Pharmacology, Addiction Science and Toxicology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38103, USA.
- Integrated Biomedical Sciences Program, Molecular and Systems Pharmacology Track, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN, 38163, USA.
| | - Hao Chen
- Department of Pharmacology, Addiction Science and Toxicology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38103, USA
| | - Francesca-Fang Liao
- Department of Pharmacology, Addiction Science and Toxicology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38103, USA.
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26
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Matos MS, Anastácio JD, Nunes dos Santos C. Sesquiterpene Lactones: Promising Natural Compounds to Fight Inflammation. Pharmaceutics 2021; 13:pharmaceutics13070991. [PMID: 34208907 PMCID: PMC8309091 DOI: 10.3390/pharmaceutics13070991] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/18/2021] [Accepted: 06/22/2021] [Indexed: 12/14/2022] Open
Abstract
Inflammation is a crucial and complex process that reestablishes the physiological state after a noxious stimulus. In pathological conditions the inflammatory state may persist, leading to chronic inflammation and causing tissue damage. Sesquiterpene lactones (SLs) are composed of a large and diverse group of highly bioactive plant secondary metabolites, characterized by a 15-carbon backbone structure. In recent years, the interest in SLs has risen due to their vast array of biological activities beneficial for human health. The anti-inflammatory potential of these compounds results from their ability to target and inhibit various key pro-inflammatory molecules enrolled in diverse inflammatory pathways, and prevent or reduce the inflammatory damage on tissues. Research on the anti-inflammatory mechanisms of SLs has thrived over the last years, and numerous compounds from diverse plants have been studied, using in silico, in vitro, and in vivo assays. Besides their anti-inflammatory potential, their cytotoxicity, structure–activity relationships, and pharmacokinetics have been investigated. This review aims to gather the most relevant results and insights concerning the anti-inflammatory potential of SL-rich extracts and pure SLs, focusing on their effects in different inflammatory pathways and on different molecular players.
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Affiliation(s)
- Melanie S. Matos
- Instituto de Biologia Experimental e Tecnológica (iBET), Apartado 12, 2781-901 Oeiras, Portugal; (M.S.M.); (J.D.A.)
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - José D. Anastácio
- Instituto de Biologia Experimental e Tecnológica (iBET), Apartado 12, 2781-901 Oeiras, Portugal; (M.S.M.); (J.D.A.)
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 130, 1169-056 Lisboa, Portugal
| | - Cláudia Nunes dos Santos
- Instituto de Biologia Experimental e Tecnológica (iBET), Apartado 12, 2781-901 Oeiras, Portugal; (M.S.M.); (J.D.A.)
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 130, 1169-056 Lisboa, Portugal
- Correspondence:
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27
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Alwaseem H, Giovani S, Crotti M, Welle K, Jordan CT, Ghaemmaghami S, Fasan R. Comprehensive Structure-Activity Profiling of Micheliolide and its Targeted Proteome in Leukemia Cells via Probe-Guided Late-Stage C-H Functionalization. ACS CENTRAL SCIENCE 2021; 7:841-857. [PMID: 34079900 PMCID: PMC8161485 DOI: 10.1021/acscentsci.0c01624] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Indexed: 05/03/2023]
Abstract
The plant-derived sesquiterpene lactone micheliolide was recently found to possess promising antileukemic activity, including the ability to target and kill leukemia stem cells. Efforts toward improving the biological activity of micheliolide and investigating its mechanism of action have been hindered by the paucity of preexisting functional groups amenable for late-stage derivatization of this molecule. Here, we report the implementation of a probe-based P450 fingerprinting strategy to rapidly evolve engineered P450 catalysts useful for the regio- and stereoselective hydroxylation of micheliolide at two previously inaccessible aliphatic positions in this complex natural product. Via P450-mediated chemoenzymatic synthesis, a broad panel of novel micheliolide analogs could thus be obtained to gain structure-activity insights into the effect of C2, C4, and C14 substitutions on the antileukemic activity of micheliolide, ultimately leading to the discovery of "micheliologs" with improved potency against acute myelogenic leukemia cells. These late-stage C-H functionalization routes could be further leveraged to generate a panel of affinity probes for conducting a comprehensive analysis of the protein targeting profile of micheliolide in leukemia cells via chemical proteomics analyses. These studies introduce new micheliolide-based antileukemic agents and shed new light onto the biomolecular targets and mechanism of action of micheliolide in leukemia cells. More broadly, this work showcases the value of the present P450-mediated C-H functionalization strategy for streamlining the late-stage diversification and elucidation of the biomolecular targets of a complex bioactive molecule.
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Affiliation(s)
- Hanan Alwaseem
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Simone Giovani
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Michele Crotti
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
- Dipartimento
di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, 20133 Milan, Italy
| | - Kevin Welle
- Mass
Spectrometry Resource Laboratory, University
of Rochester Medical School, Rochester, New York 14627, United States
| | - Craig T. Jordan
- Department
of Hematology, School of Medicine, University
of Colorado, Aurora, Colorado 80045, United
States
| | - Sina Ghaemmaghami
- Mass
Spectrometry Resource Laboratory, University
of Rochester Medical School, Rochester, New York 14627, United States
- Department
of Biology, University of Rochester, Rochester, New York 14627, United States
| | - Rudi Fasan
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
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28
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Zeng B, Cheng Y, Zheng K, Liu S, Shen L, Hu J, Li Y, Pan X. Design, synthesis and in vivo anticancer activity of novel parthenolide and micheliolide derivatives as NF-κB and STAT3 inhibitors. Bioorg Chem 2021; 111:104973. [PMID: 34004586 DOI: 10.1016/j.bioorg.2021.104973] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/26/2021] [Accepted: 05/05/2021] [Indexed: 01/20/2023]
Abstract
Parthenolide and micheliolide have attracted great attention in anticancer research due to their unique activities. In this study, thirteen parthenolide derivatives and twenty-three micheliolide derivatives were synthesized. Most synthesized compounds showed higher cytotoxicity than parthenolide or micheliolide. The in vivo anticancer activity of several representative compounds was evaluated in mice. One micheliolide derivative, 9-oxomicheliolide (43), showed promising in vivo antitumor activity compared with clinical drugs cyclophosphamide or temozolomide. Compound 43 was particularly effective against glioblastoma, with its tumor inhibition rate in mice comparable to the drug temozolomide. The discovery of compound 43 also demonstrates the feasibility of developing anticancer micheliolide derivatives by modification at C-9 position. Anticancer mechanism studies revealed that 9-oxomicheliolide exhibited inhibition effect against NF-κB and STAT3 signaling pathways, as well as induction effects of cell apoptosis. It is postulated that 9-oxomicheliolide is likely to be a modulator of the immune system, which regulates the anticancer immune responses.
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Affiliation(s)
- Binglin Zeng
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines and Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Yu Cheng
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines and Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Kailu Zheng
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines and Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Shuoxiao Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines and Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Longying Shen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines and Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Jinping Hu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines and Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Yan Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines and Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China.
| | - Xiandao Pan
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines and Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China.
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29
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PAMK Relieves LPS-Induced Enteritis and Improves Intestinal Flora Disorder in Goslings. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:9721353. [PMID: 33688370 PMCID: PMC7920704 DOI: 10.1155/2021/9721353] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 01/06/2021] [Accepted: 01/16/2021] [Indexed: 12/14/2022]
Abstract
Polysaccharide of Atractylodes macrocephala Koidz (PAMK) is a biologically active component of Atractylodes macrocephala, which has the effect of maintaining the immune homeostasis of the body. Therefore, this study constructed a model of PAMK to relieve LPS-induced gosling enteritis and observed the morphological changes of the small intestine after HE staining. ELISA was used to detect serum CRP, IL-1β, IL-6, and TNF-α levels; immunohistochemistry was used to detect the positive rate of IgA in the small intestine; TLR4, occludin, ZO-1, cytokines, and immunoglobulin mRNA expression in the small intestine were detected by qPCR; and intestinal flora of gosling excrement was analyzed by 16S rDNA sequencing to analyze the protective effect of PAMK on goslings enteritis and the impact on intestinal flora. The results showed that PAMK relieves LPS-induced gosling enteritis by maintaining the small intestine morphology, cytokine, tight junctions, and immunoglobulin relatively stable and improving the disorder of intestinal flora.
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Abdel-Dayem SIA, Khalil MNA, Abdelrahman EH, El-Gohary HM, Kamel AS. Sesquiterpene lactones; Damsin and neoambrosin suppress cytokine-mediated inflammation in complete Freund's adjuvant rat model via shutting Akt/ERK1/2/STAT3 signaling. JOURNAL OF ETHNOPHARMACOLOGY 2021; 266:113407. [PMID: 32979413 DOI: 10.1016/j.jep.2020.113407] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 09/15/2020] [Accepted: 09/17/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGIAL RELEVANCE Although Damsissa (Ambrosia maritima) is traditionally used as anti-inflammatory and diuretic, the biological activity and mechanism of action of its major constituents are to be elucidated. AIM to decipher the anti-arthritic potential of damsin (DMS) and neoambrosin (NMS) and to unfold their molecular signaling in complete Freund's adjuvant (CFA)-induced arthritis model. MATERIALS AND METHODS the right hind paw was inoculated with CFA (0.1 ml) at day 0 and 7 while treatments were started from the 14th day and continued for 2 weeks. Rats were randomly assigned into 4 groups; normal group (NRML), CFA-induced arthritis group, CFA-induced arthritis treated with DMS and NMS (10 mg/kg/day) as 3rd and 4th group; respectively. RESULTS Throughout experimental period, treatments ameliorated the increase of paw volume, knee joint diameter and nociception tests as reflected in open field arena. Also, DSM and NMS suppressed phosphorylation of Akt, STAT-3, ERK1/2 which was further mirrored by inactivation of GSK3β and downregulation of MCP-1 together with CCN1 and NF-kβ in hind paw tissue. Concomitantly, inflammation markers; TNF-α, IL-6, -12 were lowered as confirmed microscopically during examination of hind paw tissue. CONCLUSION DSM and NMS-induced suppression of NF-kβ subdues clinical features of RA most probably through repression of Akt/ERK1/2/STAT3 pathway. Therefore, DMS and NMS can serve as safe and effective treatment for rheumatoid arthritis, one of the most disabling chronic, inflammatory and painful autoimmune disease.
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Affiliation(s)
- Shymaa I A Abdel-Dayem
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini, Cairo, 11562, Egypt.
| | - Mohammed N A Khalil
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini, Cairo, 11562, Egypt; Pharmacognosy Department, Faculty of Pharmacy, Heliopolis University, Cairo, 11361, Egypt.
| | - Enas H Abdelrahman
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini, Cairo, 11562, Egypt.
| | - Hamida M El-Gohary
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini, Cairo, 11562, Egypt.
| | - Ahmed S Kamel
- Pharmacology Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini, Cairo, 11562, Egypt.
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31
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Ahmed B, Sultana R, Greene MW. Adipose tissue and insulin resistance in obese. Biomed Pharmacother 2021; 137:111315. [PMID: 33561645 DOI: 10.1016/j.biopha.2021.111315] [Citation(s) in RCA: 280] [Impact Index Per Article: 93.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 02/08/2023] Open
Abstract
Currently, obesity has become a global health issue and is referred to as an epidemic. Dysfunctional obese adipose tissue plays a pivotal role in the development of insulin resistance. However, the mechanism of how dysfunctional obese-adipose tissue develops insulin-resistant circumstances remains poorly understood. Therefore, this review attempts to highlight the potential mechanisms behind obesity-associated insulin resistance. Multiple risk factors are directly or indirectly associated with the increased risk of obesity; among them, environmental factors, genetics, aging, gut microbiota, and diets are prominent. Once an individual becomes obese, adipocytes increase in their size; therefore, adipose tissues become larger and dysfunctional, recruit macrophages, and then these polarize to pro-inflammatory states. Enlarged adipose tissues release excess free fatty acids (FFAs), reactive oxygen species (ROS), and pro-inflammatory cytokines. Excess systemic FFAs and dietary lipids enter inside the cells of non-adipose organs such as the liver, muscle, and pancreas, and are deposited as ectopic fat, generating lipotoxicity. Toxic lipids dysregulate cellular organelles, e.g., mitochondria, endoplasmic reticulum, and lysosomes. Dysregulated organelles release excess ROS and pro-inflammation, resulting in systemic inflammation. Long term low-grade systemic inflammation prevents insulin from its action in the insulin signaling pathway, disrupts glucose homeostasis, and results in systemic dysregulation. Overall, long-term obesity and overnutrition develop into insulin resistance and chronic low-grade systemic inflammation through lipotoxicity, creating the circumstances to develop clinical conditions. This review also shows that the liver is the most sensitive organ undergoing insulin impairment faster than other organs, and thus, hepatic insulin resistance is the primary event that leads to the subsequent development of peripheral tissue insulin resistance.
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Affiliation(s)
- Bulbul Ahmed
- Department of Nutrition, Auburn University, Auburn, AL, 36849, United States.
| | - Rifat Sultana
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD, 57007, United States
| | - Michael W Greene
- Department of Nutrition, Auburn University, Auburn, AL, 36849, United States
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32
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Catarina AV, Branchini G, Bettoni L, De Oliveira JR, Nunes FB. Sepsis-Associated Encephalopathy: from Pathophysiology to Progress in Experimental Studies. Mol Neurobiol 2021; 58:2770-2779. [PMID: 33495934 DOI: 10.1007/s12035-021-02303-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 01/18/2021] [Indexed: 12/14/2022]
Abstract
Sepsis is an organ dysfunction caused by an uncontrolled inflammatory response from the host to an infection. Sepsis is the main cause of morbidity and mortality in intensive care units (ICU) worldwide. One of the first organs to suffer from injuries resulting from sepsis is the brain. The central nervous system (CNS) is particularly vulnerable to damage, mediated by inflammatory and oxidative processes, which can cause the sepsis-associated encephalopathy (SAE), being reported in up to 70% of septic patients. This review aims to bring a summary of the main pathophysiological changes and dysfunctions in SAE, and the main focuses of current experimental studies for new treatments and therapies. The pathophysiology of SAE is complex and multifactorial, combining intertwined processes, and is promoted by countless alterations and dysfunctions resulting from sepsis, such as inflammation, neuroinflammation, oxidative stress, reduced brain metabolism, and injuries to the integrity of the blood-brain barrier (BBB). The treatment is limited once its cause is not completely understood. The patient's sedation is far to provide an adequate treatment to this complex condition. Studies and experimental advances are important for a better understanding of its pathophysiology and for the development of new treatments, medicines, and therapies for the treatment of SAE and to reduce its effects during and after sepsis.
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Affiliation(s)
- Anderson Velasque Catarina
- Programa de Pós-graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre - UFCSPA, Porto Alegre, RS, 90050-170, Brazil.
| | - Gisele Branchini
- Programa de Pós-graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre - UFCSPA, Porto Alegre, RS, 90050-170, Brazil
| | - Lais Bettoni
- Programa de Pós-graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre - UFCSPA, Porto Alegre, RS, 90050-170, Brazil
| | - Jarbas Rodrigues De Oliveira
- Laboratório de Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul - PUCRS, Porto Alegre, Brazil
| | - Fernanda Bordignon Nunes
- Programa de Pós-graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre - UFCSPA, Porto Alegre, RS, 90050-170, Brazil.,Laboratório de Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul - PUCRS, Porto Alegre, Brazil
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Yarmohammadi F, Hayes AW, Karimi G. Natural compounds against cytotoxic drug-induced cardiotoxicity: A review on the involvement of PI3K/Akt signaling pathway. J Biochem Mol Toxicol 2020; 35:e22683. [PMID: 33325091 DOI: 10.1002/jbt.22683] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/09/2020] [Accepted: 11/25/2020] [Indexed: 12/17/2022]
Abstract
Cardiotoxicity is a critical concern in the use of several cytotoxic drugs. Induction of apoptosis, inflammation, and autophagy following dysregulation of the PI3K/Akt signaling pathway contributes to the cardiac damage induced by these drugs. Several natural compounds (NCs), including ferulic acid, gingerol, salvianolic acid B, paeonol, apigenin, calycosin, rutin, neferine, higenamine, vincristine, micheliolide, astragaloside IV, and astragalus polysaccharide, have been reported to suppress cytotoxic drug-induced cardiac injury. This article reviews these NCs that have been reported to have a protective effect against cytotoxic drug-induced cardiotoxicity through regulation of the PI3K/Akt signaling pathway.
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Affiliation(s)
- Fatemeh Yarmohammadi
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - A Wallace Hayes
- College of Public Health, University of South Florida, Tampa, Florida, USA.,Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA
| | - Gholamreza Karimi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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Gil TY, Jin BR, Hong CH, Park JH, An HJ. Astilbe Chinensis ethanol extract suppresses inflammation in macrophages via NF-κB pathway. BMC Complement Med Ther 2020; 20:302. [PMID: 33028307 PMCID: PMC7542915 DOI: 10.1186/s12906-020-03073-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 09/07/2020] [Indexed: 12/23/2022] Open
Abstract
Background Macrophages play a crucial role in inflammation. Astilbe chinensis is one of perennial herbs belonging to the genus Astilbe. Plants in the genus have been used for pain, headaches, arthralgia, and chronic bronchitis. However, the effect of A.chinensis on inflammation remains unclear. To study the anti-inflammatory action of A.chinensis ethanol extract (ACE), we investigated the effect of ACE on the production of pro-inflammatory mediators and cytokines in macrophages. Methods We evaluated the effectiveness of ACE in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages and thioglycollate (TG)-elicited peritoneal macrophages from male C57BL/6 mice. We measured the levels of pro-inflammatory mediators and cytokines, and examined the anti-inflammatory actions of ACE on nuclear factor κB (NF-κB) pathway in the macrophages. Western blot analysis and immunofluorescence microscopy were used to determine protein level and translocation, respectively. Results ACE suppressed the output of nitric oxide (NO), prostaglandin E2 (PGE2), and pro-inflammatory cytokines in stimulated macrophages via inhibiting the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) proteins. ACE suppressed mRNA expression of pro-inflammatory cytokines such as interleukin (IL)-6 and tumor necrosis factor-alpha (TNF-α). We examined the efficacies of ACE on NF-κB activation by measuring the expressions including IκB kinase (IKK), inhibitor of κB (IκB), and nuclear p65 proteins. In addition, the inhibition of NF-κB p65’s translocation was determined with immunofluorescence assay. Conclusion Our findings manifested that ACE inhibited LPS or TG-induced inflammation by blocking the NF-κB signaling pathway in macrophages. It indicated that ACE is a potential therapeutic mean for inflammation and related diseases.
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Affiliation(s)
- Tae-Young Gil
- Department of Pharmacology, College of Korean Medicine, Sangji University, 83, Sangjidae-gil, Wonju-si, Gangwon-do, 26339, Republic of Korea
| | - Bo-Ram Jin
- Department of Pharmacology, College of Korean Medicine, Sangji University, 83, Sangjidae-gil, Wonju-si, Gangwon-do, 26339, Republic of Korea
| | - Chul-Hee Hong
- Department of Korean Medicine Ophthalmology & Otolaryngology & Dermatology, College of Korean Medicine, Sangji University, 83, Sangjidae-gil, Wonju-si, Gangwon-do, 26339, Republic of Korea
| | | | - Hyo-Jin An
- Department of Pharmacology, College of Korean Medicine, Sangji University, 83, Sangjidae-gil, Wonju-si, Gangwon-do, 26339, Republic of Korea.
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35
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Liu Z, Wang J, Zhang Y, Wu D, Li S, Jiang A, Du C, Xie G. Pterostilbene Exerts Hepatoprotective Effects through Ameliorating LPS/D-Gal-Induced Acute Liver Injury in Mice. Inflammation 2020; 44:526-535. [PMID: 33006074 DOI: 10.1007/s10753-020-01349-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 09/15/2020] [Accepted: 09/24/2020] [Indexed: 11/25/2022]
Abstract
Acute liver injury (ALI) refers to abnormalities in liver function caused by various causes and accompanied by poor prognosis and high mortality. Common predisposing factors for the disease are viral hepatitis, bacteria, alcohol, and certain hepatotoxic drugs. Inflammatory response and oxidative stress are critical for the pathogenesis of ALI. Pterostilbene (Pte), a natural polyphenol product extracted from blueberries and grapes, has been reported that exerted multiple biological activities, including antioxidative, anti-inflammatory, anti-carcinogenic, and anti-apoptotic properties. However, there is very little data showing the hepatoprotective effect of Pte on lipopolysaccharide/D-galactosamine (LPS/D-Gal)-induced ALI in mice. In this study, the possible protective effect and potential mechanisms of Pte on ALI are being investigated. It has been found that Pte markedly ameliorates LPS/D-Gal-induced inflammatory infiltration, hemorrhage, and dissociation of the hepatic cord, reducing the myeloperoxidase (MPO) activity in liver tissues and serum levels of alanine transaminase (ALT) and aspartate aminotransferase (AST) in ALI. Pte also inhibits LPS/D-Gal-induced secretion of pro-inflammatory cytokine tumor necrosis factor-a (TNF-α), interleukin 6 (IL-6), and interleukin 1β (IL-1β) in liver tissues. Furthermore, the western blot analysis reveals that LPS/D-Gal-activated nuclear factor-kappa B (NF-κB) is significantly inhibited by Pte, and nuclear factor (erythroid-derived 2)-like 2 (Nrf2) and heme oxygenase-1 (HO-1) are upregulated by Pte. In conclusion, our results suggest that Pte exerts anti-inflammatory and antioxidative effects, which might contribute to ameliorating LPS/D-Gal-induced ALI in mice. Pte has the potential to be a preventive hepatoprotective agent.
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Affiliation(s)
- Ziyi Liu
- College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin, People's Republic of China
| | - Jingjing Wang
- College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin, People's Republic of China
| | - Yong Zhang
- College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin, People's Republic of China
| | - Di Wu
- College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin, People's Republic of China
| | - Shuangqiu Li
- College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin, People's Republic of China
| | - Aimin Jiang
- College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin, People's Republic of China
| | - ChongTao Du
- College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin, People's Republic of China.
| | - Guanghong Xie
- College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin, People's Republic of China.
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Lin YS, Tsai KL, Chen JN, Wu CS. Mangiferin inhibits lipopolysaccharide-induced epithelial-mesenchymal transition (EMT) and enhances the expression of tumor suppressor gene PER1 in non-small cell lung cancer cells. ENVIRONMENTAL TOXICOLOGY 2020; 35:1070-1081. [PMID: 32420661 DOI: 10.1002/tox.22943] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 03/10/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
Non-small cell lung cancer (NSCLC) is often complicated by pulmonary infection, which affects treatment and prognosis. Bacterial lipopolysaccharide (LPS) is an effective stimulator of inflammatory cytokine production, and previous studies have reported that LPS promotes tumor invasion and metastasis. Mangiferin is a plant-derived C-glucosylxanthone with many biological activities, such as antioxidation and anti-inflammation. This research mainly explored the mechanism of its antitumor activities on LPS-induced A549, NCI-H460, and NCI-H520 NSCLC cells. We determined that mangiferin exhibits growth inhibiting activity against LPS-induced NSCLC cells through the 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay. In addition, mangiferin reversed the LPS-induced downregulation of E-cadherin (epithelial marker); conversely, it significantly inhibited the expression of raised vimentin (mesenchymal markers). Moreover, the ability of NSCLC cells to migrate, as evidenced by the wound healing and transwell migration assays, and the expression of CXCR4 increased by LPS were significantly repressed by mangiferin. In addition, mangiferin markedly mediated protein levels of PER1 and NLRP3 in LPS-induced NSCLC cells and reduced the secretion of IL-1β. These results indicate that mangiferin is not only a remarkable anti-inflammatory compound but also an antitumor agent; thus, it has the potential for being developed into anti-inflammatory and antitumor drugs in the future.
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Affiliation(s)
- Yen-Sung Lin
- Division of Pulmonary and Critical Care Medicine, An Nan Hospital, China Medical University, Tainan, Taiwan
| | - Kun-Ling Tsai
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jia-Ni Chen
- Department of Medical Sciences Industry, College of Health Sciences, Chang Jung Christian University, Tainan, Taiwan
| | - Chen-Shiou Wu
- Department of Medical Sciences Industry, College of Health Sciences, Chang Jung Christian University, Tainan, Taiwan
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Tian ZG, Yao M, Chen J. Micheliolide alleviates ankylosing spondylitis (AS) by suppressing the activation of the NLRP3 inflammasome and maintaining the balance of Th1/Th2 via regulating the NF-κB signaling pathway. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:991. [PMID: 32953791 PMCID: PMC7475468 DOI: 10.21037/atm-20-4987] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Background Ankylosing spondylitis (AS) is a common form of inflammatory arthritis. Micheliolide (MCL), a sesquiterpene lactone, is reportedly involved in the alleviation of inflammatory response. This study aimed to investigate the mechanism of MCL in the treatment of AS. Methods Mice were randomly divided into five groups: the sham group, the MCL (50 mg/kg) group, the AS model group, the AS + MCL (20 mg/kg) group, and the AS + MCL (50 mg/kg) group. After the addition of the inhibitor celastrol, mice were randomly divided into five groups: the sham group, the AS model group, the AS + MCL (50 mg/kg) group, the AS + Celastrol (1 mg/kg) group, and the AS + Celastrol (1 mg/kg) + MCL (50 mg/kg) group. Results Compared with the AS model mice, the protein expression levels of tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-6, and IL-18 were decreased after MCL treatment. The protein expression levels of capase-1 p10, IL-1β p17, NOD-like receptor family and pyrin domain containing 3 (NLRP3), caspase-1, and apoptosis-associated speck-like protein (ASC) were also reduced. The protein expression levels of Interferon (IFN)-γ were down-regulated, but levels of IL-4 were increased. Western blotting and immunohistochemistry revealed that the levels of p-IκB α were up-regulated, while the levels of phosphorylated-p65 were down-regulated. After the addition of celastrol, MCL treatment significantly reduced the levels of p-p65, NLRP3, caspase-1, and ASC. Meanwhile, the levels of IFN-γ were markedly down-regulated, but the levels of IL-4 were enhanced. Conclusions Our study found that MCL suppressed the activation of NLRP3 inflammasome and maintained the balance of Th1/Th2 via regulating NF-κB signaling. Therefore, MCL could potentially be used to treat AS.
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Affiliation(s)
- Zhong-Gu Tian
- Department of Orthopedics, Pinggu Hospital, Beijing Hospital of Traditional Chinese Medicine, Beijing, China
| | - Miaomiao Yao
- Drug Clinical Trial Institution, Xi'an Gaoxin Hospital, Xi'an, China
| | - Jie Chen
- Department of Osteoporosis, Gansu Provincial Hospital of Traditional Chinese Medicine, Lanzhou, China
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Shi T, Li T, Jiang X, Jiang X, Zhang Q, Wang Y, Zhang Y, Wang L, Qin X, Zhang W, Zheng Y. Baicalin protects mice from infection with methicillin-resistant Staphylococcus aureus via alleviating inflammatory response. J Leukoc Biol 2020; 108:1829-1839. [PMID: 32893374 DOI: 10.1002/jlb.3ab0820-576rrr] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 12/27/2022] Open
Abstract
Sepsis was redefined as life-threatening organ dysfunction caused by a dysregulated host response to infection in 2016. One of its most common causes is Staphylococcus aureus, especially methicillin-resistant Staphylococcus aureus (MRSA), which leads to a significant increase in morbidity and mortality. Therefore, innovative and effective approaches to combat MRSA infection are urgently needed. Recently, host-directed therapy (HDT) has become a new strategy in the treatment of infectious diseases, especially those caused by antibiotic-resistant bacteria. Baicalin (BAI) is the predominant flavonoid and bioactive compound isolated from the roots of Radix Scutellariae (Huang Qin), a kind of traditional Chinese medicine. It has been reported that BAI exhibits multiple biological properties such as anti-oxidant, antitumor, and anti-inflammatory activities. However, the therapeutic role of BAI in MRSA infection is still unknown. In this study, it is found that BAI treatment inhibited the production of IL-6, TNF-α, and other cytokines from MRSA- or bacterial mimics-stimulated Mϕs and dendritic cells (DCs). BAI played an anti-inflammatory role by inhibiting the activation of ERK, JNK MAPK, and NF-κB pathways. Moreover, the serum level of TNF-α was decreased, whereas IL-10 was increased, in mice injected with MRSA. Furthermore, the bacterial load in livers and kidneys were further decreased by the combination of BAI and vancomycin (VAN), which might account for the amelioration of tissue damage. BAI reduced the high mortality rate caused by MRSA infection. Collectively, the results suggested that BAI may be a viable candidate of HDT strategy against severe sepsis caused by antibiotic-resistant bacteria such as MRSA.
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Affiliation(s)
- Ting Shi
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, P. R. China.,Scientific Research Center, Shanghai Public Health Clinical Center, Fudan University, Shanghai, P. R. China
| | - Tiantian Li
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, P. R. China
| | - Xinru Jiang
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, P. R. China
| | - Xin Jiang
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, P. R. China
| | - Qingwen Zhang
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, P. R. China
| | - Yuli Wang
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, P. R. China
| | - Yaxing Zhang
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, P. R. China
| | - Lixin Wang
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, P. R. China
| | - Xiangyang Qin
- Department of Chemistry, School of Pharmacy, Air Force Medical University, Xi'an, Shaanxi, P. R. China
| | - Weidong Zhang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, P. R. China.,School of Pharmacy, Second Military Medical University, Shanghai, P. R. China
| | - Yuejuan Zheng
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, P. R. China
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Chlorogenic Acid Potentiates the Anti-Inflammatory Activity of Curcumin in LPS-Stimulated THP-1 Cells. Nutrients 2020; 12:nu12092706. [PMID: 32899726 PMCID: PMC7551420 DOI: 10.3390/nu12092706] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/27/2020] [Accepted: 08/30/2020] [Indexed: 02/03/2023] Open
Abstract
The anti-inflammatory effects of curcumin are well documented. However, the bioavailability of curcumin is a major barrier to its biological efficacy. Low-dose combination of complimentary bioactives appears to be an attractive strategy for limiting barriers to efficacy of bioactive compounds. In this study, the anti-inflammatory potential of curcumin in combination with chlorogenic acid (CGA), was investigated using human THP-1 macrophages stimulated with lipopolysaccharide (LPS). Curcumin alone suppressed TNF-α production in a dose-dependent manner with a decrease in cell viability at higher doses. Although treatment with CGA alone had no effect on TNF-α production, it however enhanced cell viability and co-administration with curcumin at a 1:1 ratio caused a synergistic reduction in TNF-α production with no impact on cell viability. Furthermore, an qRT-PCR analysis of NF-κB pathway components and inflammatory biomarkers indicated that CGA alone was not effective in reducing the mRNA expression of any of the tested inflammatory marker genes, except TLR-4. However, co-administration of CGA with curcumin, potentiated the anti-inflammatory effects of curcumin. Curcumin and CGA together reduced the mRNA expression of pro-inflammatory cytokines [TNF-α (~88%) and IL-6 (~99%)], and COX-2 (~92%), possibly by suppression of NF-κB (~78%), IκB-β-kinase (~60%) and TLR-4 receptor (~72%) at the mRNA level. Overall, co-administration with CGA improved the inflammation-lowering effects of curcumin in THP-1 cells.
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Feng D, Liu M, Liu Y, Zhao X, Sun H, Zheng X, Zhu J, Shang F. Micheliolide suppresses the viability, migration and invasion of U251MG cells via the NF-κB signaling pathway. Oncol Lett 2020; 20:67. [PMID: 32863900 PMCID: PMC7436293 DOI: 10.3892/ol.2020.11928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 06/16/2020] [Indexed: 11/06/2022] Open
Abstract
Micheliolide (MCL), a sesquiterpene lactone isolated from Michelia compressa and Michelia champaca, has been used previously to inhibit the NF-κB signaling pathway. MCL has exerted various therapeutic effects in numerous types of disease, such as inflammatory and cancer. However, to the best of our knowledge, its underlying anticancer mechanism remains to be understood. The present study aimed to investigate the effects of MCL on human glioma U251MG cells and to determine the potential anticancer mechanism of action of MCL. From Cell Counting Kit-8, colony formation assay, apoptosis assay and Confocal immunofluorescence imaging analysis, the results revealed that MCL significantly inhibited cell viability in vitro and induced cell apoptosis via activation of the cytochrome c/caspase-dependent apoptotic pathway. In addition, MCL also suppressed cell invasion and metastasis via the wound healing and Transwell invasion assays. Furthermore, western blot and reverse transcription PCR analyses demonstrated that MCL significantly downregulated cyclooxygenase-2 (COX-2) expression levels, which may have partially occurred through the inactivation of the NF-κB signaling pathway. In conclusion, the results of the present study indicated that MCL may inhibit glioma carcinoma growth by downregulating the NF-κB/COX-2 signaling pathway, which suggested that MCL may be a novel and alternative antitumor agent for the treatment of human glioma carcinoma.
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Affiliation(s)
- Dingkun Feng
- Department of Neurosurgery, The Affiliated Renhe Hospital, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Min Liu
- Department of Neurology, Xinhua Hospital affiliated to Dalian University, Dalian, Liaoning 116021, P.R. China
| | - Yanting Liu
- Department of Neurosurgery, The First College of Clinical Medical Science, China Three Gorges University & Yichang Central People's Hospital, Yichang, Hubei 443003, P.R. China.,Central Laboratory, The First College of Clinical Medical Science, China Three Gorges University & Yichang Central People's Hospital, Yichang, Hubei 443003, P.R. China
| | - Xiaojin Zhao
- Department of Gastroenterology, The Affiliated Renhe Hospital, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Huan Sun
- Department of Neurosurgery, The Affiliated Renhe Hospital, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Xu Zheng
- Department of Neurosurgery, The Affiliated Renhe Hospital, China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Jiabin Zhu
- Department of Neurosurgery, The Affiliated Renhe Hospital, China Three Gorges University, Yichang, Hubei 443000, P.R. China.,Central Laboratory, The First College of Clinical Medical Science, China Three Gorges University & Yichang Central People's Hospital, Yichang, Hubei 443003, P.R. China
| | - Fajun Shang
- Department of Neurosurgery, The Affiliated Renhe Hospital, China Three Gorges University, Yichang, Hubei 443000, P.R. China
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Methane-Rich Saline Protects Against Sepsis-Induced Liver Damage by Regulating the PPAR-γ/NF-κB Signaling Pathway. Shock 2020; 52:e163-e172. [PMID: 30601406 DOI: 10.1097/shk.0000000000001310] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Sepsis, a life-threatening organ dysfunction due to a dysregulated response to infection, is a common complication of major surgery. Previous studies have shown that methane possesses protective properties. This study aims to investigate the protective effect of methane-rich saline (MRS) on sepsis-induced liver injury. In an in vivo experiment, C57BL/6 mice received cecal ligation and puncture to create a septic model followed by MRS treatment (10 mL/kg, ip treatment) 30 min and 12 h after the operation. We found that methane effectively decreased the serum aspartate aminotransferase, alanine aminotransferase and liver index, as well as the liver pathological damage, and reduced the localized infiltration of inflammatory cells. Methane suppressed the expression of the toll-like receptor 4/nuclear factor-kappa B (NF-κB) signaling pathway and stimulated the expression of peroxisome proliferator-activated receptor-γ (PPAR-γ) during sepsis, which inhibited the activation of NF-κB and decreased the level of inflammatory cytokines, such as tumor necrosis factor-α, interleukin-6, and interleukin-1β. Moreover, we found that MRS treatment relieved reactive oxygen species (ROS) damage by upregulating heme oxygenase-1, superoxide dismutase and glutathione, and downregulating malondialdehyde, which was consistent with the results of dihydroethidium fluorescent staining. MRS treatment also regulated apoptosis-related proteins, such as Bax, Bcl-2, and caspase-3. In the in vitro experiment, HepG2 cells received inflammatory stimulation induced by LPS followed by methane-rich medium (MRM) treatment. We found that MRM alleviated the inflammatory damage, ROS damage and regulated the expression of PPAR-γ/NF-κB. Our data indicated that methane treatment prevented liver damage in sepsis via anti-inflammatory, anti-oxidative, and anti-apoptotic properties that involved the PPAR-γ/ NF-κB signaling pathway.
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Corraliza-Gómez M, Gallardo AB, Díaz-Marrero AR, de la Rosa JM, D’Croz L, Darias J, Arranz E, Cózar-Castellano I, Ganfornina MD, Cueto M. Modulation of Glial Responses by Furanocembranolides: Leptolide Diminishes Microglial Inflammation in Vitro and Ameliorates Gliosis In Vivo in a Mouse Model of Obesity and Insulin Resistance. Mar Drugs 2020; 18:E378. [PMID: 32708004 PMCID: PMC7459604 DOI: 10.3390/md18080378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/09/2020] [Accepted: 07/20/2020] [Indexed: 02/06/2023] Open
Abstract
Neurodegenerative diseases are age-related disorders caused by progressive neuronal death in different regions of the nervous system. Neuroinflammation, modulated by glial cells, is a crucial event during the neurodegenerative process; consequently, there is an urgency to find new therapeutic products with anti-glioinflammatory properties. Five new furanocembranolides (1-5), along with leptolide, were isolated from two different extracts of Leptogorgia sp., and compound 6 was obtained from chemical transformation of leptolide. Their structures were determined based on spectroscopic evidence. These seven furanocembranolides were screened in vitro by measuring their ability to modulate interleukin-1β (IL-1β) production by microglial BV2 cells after LPS (lipopolysaccharide) stimulation. Leptolide and compounds 3, 4 and 6 exhibited clear anti-inflammatory effects on microglial cells, while compound 2 presented a pro-inflammatory outcome. The in vitro results prompted us to assess anti-glioinflammatory effects of leptolide in vivo in a high-fat diet-induced obese mouse model. Interestingly, leptolide treatment ameliorated both microgliosis and astrogliosis in this animal model. Taken together, our results reveal a promising direct biological effect of furanocembranolides on microglial cells as bioactive anti-inflammatory molecules. Among them, leptolide provides us a feasible therapeutic approach to treat neuroinflammation concomitant with metabolic impairment.
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Affiliation(s)
- Miriam Corraliza-Gómez
- Instituto de Biología y Genética Molecular, Universidad de Valladolid-CSIC, 47003 Valladolid, Spain; (M.C.-G.); (E.A.); (I.C.-C.)
| | - Amalia B. Gallardo
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avenida Astrofísico F. Sánchez, 3, 38206 La Laguna, Tenerife, Spain; (A.B.G.); (A.R.D.-M.); (J.M.d.l.R.); (J.D.)
- Departamento de Ciencias y Recursos Naturales, Facultad de Ciencias, Universidad de Magallanes, Avenida Bulnes 01855, Punta Arenas, Chile
| | - Ana R. Díaz-Marrero
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avenida Astrofísico F. Sánchez, 3, 38206 La Laguna, Tenerife, Spain; (A.B.G.); (A.R.D.-M.); (J.M.d.l.R.); (J.D.)
| | - José M. de la Rosa
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avenida Astrofísico F. Sánchez, 3, 38206 La Laguna, Tenerife, Spain; (A.B.G.); (A.R.D.-M.); (J.M.d.l.R.); (J.D.)
| | - Luis D’Croz
- Departamento de Biología Marina y Limnología, Universidad de Panamá, Panama 3366, Panama;
- Smithsonian Tropical Research Institute, STRI, Box 0843-03092 Balboa, Panama
| | - José Darias
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avenida Astrofísico F. Sánchez, 3, 38206 La Laguna, Tenerife, Spain; (A.B.G.); (A.R.D.-M.); (J.M.d.l.R.); (J.D.)
| | - Eduardo Arranz
- Instituto de Biología y Genética Molecular, Universidad de Valladolid-CSIC, 47003 Valladolid, Spain; (M.C.-G.); (E.A.); (I.C.-C.)
| | - Irene Cózar-Castellano
- Instituto de Biología y Genética Molecular, Universidad de Valladolid-CSIC, 47003 Valladolid, Spain; (M.C.-G.); (E.A.); (I.C.-C.)
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 28029 Madrid, Spain
| | - María D. Ganfornina
- Instituto de Biología y Genética Molecular, Universidad de Valladolid-CSIC, 47003 Valladolid, Spain; (M.C.-G.); (E.A.); (I.C.-C.)
| | - Mercedes Cueto
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avenida Astrofísico F. Sánchez, 3, 38206 La Laguna, Tenerife, Spain; (A.B.G.); (A.R.D.-M.); (J.M.d.l.R.); (J.D.)
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Long-term every-other-day administration of DMAMCL has little effect on aging and age-associated physiological decline in mice. Aging (Albany NY) 2020; 11:2583-2609. [PMID: 31048563 PMCID: PMC6535057 DOI: 10.18632/aging.101932] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 04/22/2019] [Indexed: 12/19/2022]
Abstract
The activation of transcription factor NF-κB is currently identified as one of the driving forces to the aging process. Genetic impairment of NF-κB signaling pathway or pharmacological inhibition of NF-κB activity has been shown to extend healthspan and lifespan in animal models, and delay or reduce many age-related symptoms. However, the aging intervention strategies based on NF-κB inhibition by the suitable small molecular compound is currently still lacking. The water-soluble dimethylaminomicheliolide (DMAMCL), can inhibit NF-κB activity and is currently undergoing clinical trials. In this study, we showed that 15 months of DMAMCL administration started in 1-year old male mice was well-tolerated and safe, and improved or had little effect on some age-associated symptoms, such as neurobehavioral phenotypes, physical performance, cardiac function, hematological parameters, immune aging phenotypes, clinical chemistry parameters, and glucose homeostasis. At the molecular level, DMAMCL administration mitigated serum levels of several age-associated inflammatory cytokines, including IL-6, IL-1α, IL-1β, TNF-α, IFN-γ, and CXCL2, and inhibited NF-κB activity in several aged tissues. Collectively, our results indicate that current strategy of DMAMCL administration may has little effect on aging process in mice, and provide basic clues to further exploit the possibility of DMAMCL-based aging intervention to promote healthy aging.
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Jiang X, Chen Y, Liu D, Shi T, Cheng X, He W, Li Y, Ryffel B, Zheng SG, Zheng Y. Secoeudesma sesquiterpenes lactone A alleviates inflammation and offers adjuvant protection in severe infection of carbapenem-resistant Klebsiella pneumoniae. JOURNAL OF ETHNOPHARMACOLOGY 2020; 252:112605. [PMID: 31981749 DOI: 10.1016/j.jep.2020.112605] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/07/2020] [Accepted: 01/19/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Secoeudesma sesquiterpenes lactone A (SESLA) is a sesquiterpene compound isolated from Inula japonica Thunb. (I. japonica). It is an herb widely distributed in Asian countries often used for the treatment of various conditions including tumors, bronchitis and bacterial and viral infections. It has been reported that SESLA could significantly inhibit the production of nitric oxide (NO) by lipopolysaccharide (LPS) in Raw264.7 cells. However, the mechanism responsible for this anti-inflammatory role and its role in the treatment of antibiotic-resistant bacterial infection, e.g., carbapenem-resistant Klebsiella pneumoniae (CRKP), remain to be investigated. AIM OF THE STUDY This study was carried out to investigate the protective anti-inflammatory role and the underlying molecular mechanisms of SESLA in LPS or CRKP evoked inflammation. MATERIALS AND METHODS ELISA and PCR were utilized to detect the expression of inflammatory mediators in LPS or heat-killed CRKP (HK CRKP)-stimulated immune cells containing different concentrations of SESLA. The protective role of SESLA was observed in mice challenged with a lethal dose of CRKP. Mice were intraperitoneally injected with CRKP to create a septic mouse model to evaluate the protective role of SESLA in vivo. Phosphorylated proteins, which represented the activation of signaling pathways, were examined by Western blot. RESULTS SESLA was showed to inhibit the expression of inflammatory mediators in various macrophages and dendritic cells upon stimulation of LPS or HK CRKP. It also facilitated phagocytosis of bacteria by Raw264.7 cells. The combined use of SELSA and the ineffective antibiotic, meropenem, increased the survival rate of CRKP infected mice from 25% to 50%. ERK, NF-κB and PI3K/Akt pathways accounted for the anti-inflammatory role of SESLA with the stimulation of LPS. CONCLUSION According to the notable anti-inflammatory effect in vitro and its joint protective effects on a septic mouse model, SESLA might act as an adjuvant drug candidate for sepsis, even those caused by antibiotic-resistant bacteria, e.g., CRKP.
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Affiliation(s)
- Xinru Jiang
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yijian Chen
- Institute of Antibiotics, Huashan Hospital, Fudan University & Key Laboratory of Clinical Pharmacology of Antibiotics, National Health and Family Planning Commission, Shanghai, China
| | - Dan Liu
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ting Shi
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaodong Cheng
- Yue-yang Hospital of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Weigang He
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yinhong Li
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | | | - Song Guo Zheng
- Division of Immunology and Rheumatology, Department of Internal Medicine, Ohio State University College of Medicine, Columbus, OH, USA.
| | - Yuejuan Zheng
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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Shi Y, Liu T, Nieman DC, Cui Y, Li F, Yang L, Shi H, Chen P. Aerobic Exercise Attenuates Acute Lung Injury Through NET Inhibition. Front Immunol 2020; 11:409. [PMID: 32265910 PMCID: PMC7096358 DOI: 10.3389/fimmu.2020.00409] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 02/21/2020] [Indexed: 12/12/2022] Open
Abstract
Introduction: Aerobic exercise improves lung inflammation in acute lung injury (ALI), but its mechanism remains unknown. Neutrophil extracellular traps (NETs) play an important role in LPS-induced ALI, and a positive correlation exists between NET formation and proinflammatory macrophage polarization. This study investigated whether aerobic exercise reduces the pro-inflammatory polarization of alveolar macrophages (AMs) by inhibiting the excessive release of NETs and then alleviating the inflammatory response of ALI. Methods: C57BL/6 male mice were randomly divided into four groups: sedentary group (CON), sedentary and extra-pulmonary LPS injection group (LPS), 5-weeks aerobic training intervention and LPS injection group (EXE+LPS), and DNase I plus LPS injection group (DNase+LPS). Twenty-four hours after drug injection, bronchoalveolar lavage fluid (BALF), AM, and lung tissues were obtained to detect inflammatory responses, NET formation, macrophage polarization, and protein activation. In the in vitro study, a murine AM cell line, designated MH-S, was stimulated with LPS, purified NETs, and NETs plus DNase I. Results: EXE+LPS and DNase+LPS mice exhibited reduced neutrophil infiltration, decreased NET release, and lower pro-inflammatory polarization of AM compared with LPS mice. Subsequently, Western blot showed inhibition of the phosphorylation of MAPK and NF-κB proteins of AMs in EXE+LPS and DNase+LPS mice compared with LPS mice. Lastly, stimulation of MH-S cells by NETs revealed a trend for pro-inflammatory cell polarization, with NF-κB protein activation at 8 h and ERK1/2 activation at 1, 2, and 8 h. Conclusions: Aerobic exercise alleviated ALI through NET-induced AM pro-inflammatory polarization involving ERK1/2 and NF-κB signaling.
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Affiliation(s)
- Yue Shi
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Tingting Liu
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - David C Nieman
- North Carolina Research Campus, Appalachian State University, Kannapolis, NC, United States
| | - Yanqiu Cui
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Fei Li
- School of Physical Education and Sport Training, Shanghai University of Sport, Shanghai, China
| | - Luyu Yang
- Department of General Surgery, Cancer Metastasis Institute, Huashan Hospital, Fudan University, Shanghai, China
| | - Hui Shi
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peijie Chen
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
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Zhou T, Sun Y, Wang Y, Chen X, Zhuo L, Bu L, Xu S, Han J, Li X, Shi J. Umbilical Cord Blood Mesenchymal Stem Cells Enhance Lipopolysaccharide-Induced IL-10 and IL-37 Production in THP-1 Cells. Inflammation 2019; 42:987-993. [PMID: 30707387 DOI: 10.1007/s10753-019-00960-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Umbilical cord blood mesenchymal stem cells (UCB-MSCs) have been shown to be a source of stem cells for use in cellular therapies and have immunomodulatory effects on several immune cells in an inflammatory environment. However, whether UCB-MSCs have immunomodulatory effects against lipopolysaccharide (LPS)-induced inflammatory cytokine secretion in macrophages and whether it is involved in phosphoinositide 3-kinase/protein kinase B (PI3K/Akt) signaling pathway remain unclear. After co-culture of UCB-MSCs and phorbol 12-myristate 13-acetate (PMA)-activated human THP-1 cells using a transwell system, it showed that LPS significantly induced increases in the expression levels of interleukin 10 (IL-10), interleukin 37 (IL-37), phospho-PI3K (p-PI3K), and phospho-Akt (p-Akt) in macrophages. UCB-MSCs upregulated the expression of IL-10, IL-37, p-PI3K, and p-Akt, while it had no obvious effect on PI3K and Akt levels. Inhibitors of PI3K (LY294002) significantly suppressed the expression of IL-10, IL-37, p-PI3K, and p-Akt; however, it had no effect on the expression levels of PI3K and Akt. The present study demonstrated that UCB-MSCs increased the LPS-stimulated expression of IL-10 and IL-37 in macrophages through the PI3K/Akt signaling pathway.
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Affiliation(s)
- Ting Zhou
- Department of Emergency Medicine, Xuzhou Medical University Affiliated Hospital of Lianyungang, No.182 North Tongguan Road, Lianyungang, 222002, China
| | - Yan Sun
- Department of Emergency Medicine, Xuzhou Medical University Affiliated Hospital of Lianyungang, No.182 North Tongguan Road, Lianyungang, 222002, China
| | - Yanli Wang
- Department of Emergency Medicine, Xuzhou Medical University Affiliated Hospital of Lianyungang, No.182 North Tongguan Road, Lianyungang, 222002, China
| | - Xiaobing Chen
- Department of Emergency Medicine, Xuzhou Medical University Affiliated Hospital of Lianyungang, No.182 North Tongguan Road, Lianyungang, 222002, China
| | - Luo Zhuo
- Department of Emergency Medicine, Xuzhou Medical University Affiliated Hospital of Lianyungang, No.182 North Tongguan Road, Lianyungang, 222002, China
| | - Lin Bu
- Department of Critical Care Medicine, Xuzhou Medical University Affiliated Hospital, No.99 West Huaihai Road, Xuzhou, 221000, China
| | - Suo Xu
- Department of Emergency Medicine, Xuzhou Medical University Affiliated Hospital of Lianyungang, No.182 North Tongguan Road, Lianyungang, 222002, China
| | - Jiayan Han
- Department of Emergency Medicine, Xuzhou Medical University Affiliated Hospital of Lianyungang, No.182 North Tongguan Road, Lianyungang, 222002, China
| | - Xiaomin Li
- Department of Emergency Medicine, Xuzhou Medical University Affiliated Hospital of Lianyungang, No.182 North Tongguan Road, Lianyungang, 222002, China.
| | - Jiaxin Shi
- Department of Respiratory Medicine, Xuzhou Medical University Affiliated Hospital of Lianyungang, No.182 North Tongguan Road, Lianyungang, 222002, China.
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Oikawa S, Kai Y, Mano A, Sugama S, Mizoguchi N, Tsuda M, Muramoto K, Kakinuma Y. Potentiating a non-neuronal cardiac cholinergic system reinforces the functional integrity of the blood brain barrier associated with systemic anti-inflammatory responses. Brain Behav Immun 2019; 81:122-137. [PMID: 31176726 DOI: 10.1016/j.bbi.2019.06.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 05/21/2019] [Accepted: 06/04/2019] [Indexed: 10/26/2022] Open
Abstract
We previously reported that the heart-specific choline acetyltransferase (ChAT) gene overexpressing mice (ChAT tg) show specific phenotypes including ischemic tolerance and the CNS stress tolerance. In the current study, we focused on molecular mechanisms responsible for systemic and localized anti-inflammatory phenotypes of ChAT tg. ChAT tg were resistant to systemic inflammation induced by lipopolysaccharides due to an attenuated cytokine response. In addition, ChAT tg, originally equipped with less reactive Kupffer cells, were refractory to brain cold injury, with decreased blood brain barrier (BBB) permeability and reduced inflammation. This is because ChAT tg brain endothelial cells expressed more claudin-5, and their astrocytes were less reactive, causing decreased hypertrophy. Moreover, reconstruction of the BBB integrity in vitro confirmed the consolidation of ChAT tg. ChAT tg were also resistant to 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) neuronal toxicity due to lower mortality rate and neuronal loss of substantia nigra. Additionally, ChAT tg subjected to MPTP showed attenuated BBB disruption, as evident from reduced sodium fluorescein levels in the brain parenchyma. The activated central cholinergic pathway of ChAT tg lead to anti-convulsive effects like vagus nerve stimulation. However, DSP-4, a noradrenergic neuron-selective neurotoxin against the CNS including the locus ceruleus, abrogated the beneficial phenotype and vagotomy attenuated expression of claudin-5, suggesting the link between the cholinergic pathway and BBB function. Altogether, these findings indicate that ChAT tg possess an anti-inflammatory response potential, associated with upregulated claudin-5, leading to the consolidation of BBB integrity. These characteristics protect ChAT tg against systemic and localized inflammatory pathological disorders, which targets the CNS.
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Affiliation(s)
- Shino Oikawa
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Yuko Kai
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Asuka Mano
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Shuei Sugama
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Naoko Mizoguchi
- Department of Physiology, School of Dentistry, Meikai University, Sakaido, Saitama 350-0283, Japan
| | - Masayuki Tsuda
- Institute for Laboratory Animal Research, Kochi Medical School, Nankoku, Kochi 783-8505, Japan
| | - Kazuyo Muramoto
- Department of Physiology, School of Dentistry, Meikai University, Sakaido, Saitama 350-0283, Japan
| | - Yoshihiko Kakinuma
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan.
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Chen Y, Chen WN, Hu N, Banwell MG, Ma C, Gardiner MG, Lan P. Cytotoxicity and Anti-inflammatory Properties of Apigenin-Derived Isolaxifolin. JOURNAL OF NATURAL PRODUCTS 2019; 82:2451-2459. [PMID: 31465218 DOI: 10.1021/acs.jnatprod.9b00113] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The rare flavonoid isolaxifolin, a potent insecticide, has been touted as a potential grain-protecting agent. In order to assess any impact of this natural product on human health and to explore its various other biological properties, we have established a semisynthesis from the simpler but structurally related and more abundant natural product apigenin. The five-step reaction sequence has provided, for the first time, sufficient material for an in-depth evaluation of the cytotoxic properties of the title natural product. The impact of isolaxifolin on certain pro-inflammatory cytokines in murine macrophage RAW 264.7 cells has also been examined. Such studies have revealed that isolaxifolin displays no toxic effects toward normal cells while displaying greater cytotoxicities against certain cancer cell lines than its synthetic precursor apigenin. Furthermore, unlike apigenin, isolaxifolin only reduced NO, TNF-α, and IL-6 secretions in LPS-induced RAW 264.7 cells in a rather modest and dose-independent manner.
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Affiliation(s)
- Yongsheng Chen
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Guangzhou , 510632 , People's Republic of China
- Department of Food Science and Engineering , Jinan University , Guangzhou , 510632 , People's Republic of China
| | - Wan-Na Chen
- College of Pharmacy , Jinan University , Guangzhou , 510632 , People's Republic of China
| | - Nan Hu
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Guangzhou , 510632 , People's Republic of China
| | - Martin G Banwell
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Guangzhou , 510632 , People's Republic of China
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , Australian Capital Territory 2601 , Australia
| | - Chenxi Ma
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , Australian Capital Territory 2601 , Australia
| | - Michael G Gardiner
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , Australian Capital Territory 2601 , Australia
| | - Ping Lan
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Guangzhou , 510632 , People's Republic of China
- College of Pharmacy , Jinan University , Guangzhou , 510632 , People's Republic of China
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Yang H, Wang J, Chen X, Jiang C, He K, Li B, Hu Y. Effects of sinomenine in LPS-associated diseases are related to inhibition of LBP, Mac-1, and L-selectin levels. J Vet Pharmacol Ther 2019; 42:732-737. [PMID: 31490576 DOI: 10.1111/jvp.12807] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/31/2019] [Accepted: 07/31/2019] [Indexed: 12/15/2022]
Abstract
The aim of the research was to investigate the anti-endotoxin and anti-inflammatory effects of Sinomenine, an agent commonly found in Chinese herbal medicines. Endotoxin (i.e., 1 mg lipopolysaccharide (LPS)/kg)) was administered via intraperitoneal (IP) injection to piglets in high-, middle-, and low-dose sinomenine groups. Piglets were then treated with 1, 5 or 10 mg/kg sinomenine, intramuscularly (i.m.), 3 hr after LPS. Vehicle was administered, as above, to drug control group piglets followed 3 hr later by 10 mg/kg sinomenine i.m.. LPS control group piglets were challenged with 1 mg/kg LPS IP, followed by vehicle i.m., and naïve control piglets were treated with normal saline IP, followed by normal saline i.m., as above. Temperatures were measured, and blood samples were collected from the precaval veins of piglets at 12, 24, and 48 hr post-LPS or vehicle injection. Clinical signs were recorded, and index levels were analyzed via ELISA. Sinomenine was found to reduce the incidence and severity of LPS-induced toxicities, including body temperature elevation, cell adhesion, and systemic inflammation. These data suggest that sinomenine may be effective for regulating inflammatory responses and has the potential for use as an anti-endotoxin therapy.
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Affiliation(s)
- Haifeng Yang
- Jiangsu Agri-animal Husbandry Vocational College, Taizhou, China
| | - Jing Wang
- Jiangsu Agri-animal Husbandry Vocational College, Taizhou, China
| | - Xiaolan Chen
- Jiangsu Agri-animal Husbandry Vocational College, Taizhou, China
| | - Chunmao Jiang
- Jiangsu Agri-animal Husbandry Vocational College, Taizhou, China
| | - Kongwang He
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Xuanwu District, Nanjing, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou, China
| | - Bin Li
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Xuanwu District, Nanjing, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou, China
| | - Yiyi Hu
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Xuanwu District, Nanjing, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou, China
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50
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TSLP Exacerbates Septic Inflammation via Murine Double Minute 2 (MDM2) Signaling Pathway. J Clin Med 2019; 8:jcm8091350. [PMID: 31480519 PMCID: PMC6780965 DOI: 10.3390/jcm8091350] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/12/2019] [Accepted: 08/26/2019] [Indexed: 02/07/2023] Open
Abstract
Thymic stromal lymphopoietin (TSLP) is crucial for Th2-mediated inflammation. Sepsis is a serious systemic inflammatory reaction with organ dysfunction by infection. However, the function of TSLP during sepsis is poorly understood. Thus, we investigated a role and regulatory mechanism of TSLP during sepsis. Sepsis was induced by lipopolysaccharides (LPS) or Escherichia coli DH5α injection in mice. TSLP levels were measured in human subjects, mice, and macrophages. TSLP deficiency or murine double minute 2 (MDM2) deficiency was induced using siRNA or an MDM2 inhibitor, nutlin-3a. We found that TSLP levels were elevated in serum of patients and mice with sepsis. TSLP deficiency lowered liver damage and inflammatory cytokine levels in mice with sepsis. TSLP was produced by the MDM2/NF-κB signaling pathway in LPS-stimulated macrophages. TSLP downregulation by an MDM2 inhibitor, nutlin-3a, alleviated clinical symptoms and septic inflammatory responses. Pharmacological inhibition of TSLP level by cisplatin reduced the septic inflammatory responses. Altogether, the present results show that TSLP exacerbates septic inflammation via the MDM2 signaling pathway, suggesting that TSLP may be a potential target for the treatment of sepsis.
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