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Sun S, Yang C, Wang K, Huang R, Zhang KN, Liu Y, Cao Z, Zhao Z, Jiang T. Molecular and clinical characterization of PTRF in glioma via 1,022 samples. BMC Cancer 2023; 23:551. [PMID: 37322408 DOI: 10.1186/s12885-023-11001-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 05/24/2023] [Indexed: 06/17/2023] Open
Abstract
Polymerase I and transcript release factor (PTRF) plays a role in the regulation of gene expression and the release of RNA transcripts during transcription, which have been associated with various human diseases. However, the role of PTRF in glioma remains unclear. In this study, RNA sequencing (RNA-seq) data (n = 1022 cases) and whole-exome sequencing (WES) data (n = 286 cases) were used to characterize the PTRF expression features. Gene ontology (GO) functional enrichment analysis was used to assess the biological implication of changes in PTRF expression. As a result, the expression of PTRF was associated with malignant progression in gliomas. Meanwhile, somatic mutational profiles and copy number variations (CNV) revealed the glioma subtypes classified by PTRF expression showed distinct genomic alteration. Furthermore, GO functional enrichment analysis suggested that PTRF expression was associated with cell migration and angiogenesis, particularly during an immune response. Survival analysis confirmed that a high expression of PTRF is associated with a poor prognosis. In summary, PTRF may be a valuable factor for the diagnosis and treatment target of glioma.
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Affiliation(s)
- Si Sun
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Changlin Yang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
| | - Kuanyu Wang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
| | - Ruoyu Huang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
| | - Ke-Nan Zhang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
| | - Yanwei Liu
- Department of Radiotherapy, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
| | - Zhi Cao
- Department of Neurosurgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, China.
| | - Zheng Zhao
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China.
- Chinese Glioma Genome Atlas Network and Asian Glioma Genome Atlas Network, Beijing, 100070, China.
| | - Tao Jiang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China.
- Chinese Glioma Genome Atlas Network and Asian Glioma Genome Atlas Network, Beijing, 100070, China.
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
- Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, 100069, China.
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, China.
- Research Unit of Accurate Diagnosis, Treatment, and Translational Medicine of Brain Tumors, Chinese Academy of Medical Sciences, Beijing, 100070, China.
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Zhang S, Zhu P, Yuan J, Cheng K, Xu Q, Chen W, Pan Z, Zheng Y. Non-alcoholic fatty liver disease combined with rheumatoid arthritis exacerbates liver fibrosis by stimulating co-localization of PTRF and TLR4 in rats. Front Pharmacol 2023; 14:1149665. [PMID: 37346294 PMCID: PMC10279862 DOI: 10.3389/fphar.2023.1149665] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 05/25/2023] [Indexed: 06/23/2023] Open
Abstract
Rheumatoid arthritis (RA) has a high prevalence in patients with non-alcoholic fatty liver disease (NAFLD); however, the underlying mechanism is unclear. To address this, our study established a rat model with both NAFLD and RA by feeding a high-fat diet (HFD) and administering intradermal injection of Freund's complete adjuvant (FCA) with bovine type II collagen. Collagen-induced RA (CIA) was confirmed by hind paw swelling and histological examination. The histomorphological characteristics of NAFLD were evaluated by Masson's trichrome and hematoxylin-eosin staining. The development of NAFLD was further evaluated by measuring serum concentrations of triglyceride (TG), total cholesterol (T-CHO), alanine aminotransferase (ALT), aspartate aminotransferase (AST), and lipopolysaccharide (LPS). The results showed that HFD feeding exacerbated secondary inflammation in CIA rats, whereas FCA/bovine type II collagen injection increased serum levels of ALT, AST, TG, T-CHO, and LPS and exacerbated hepatic fibrosis in both normal and NAFLD rats. Interestingly, NAFLD + CIA significantly promoted the expression of PTRF, a caveolae structure protein involved in hepatic lipid metabolism and affecting downstream signaling of Toll-like receptor 4 (TLR4) and PI3K/Akt activation. High resolution confocal microscopy revealed increased PTRF and TLR4 co-localization in hepatic small vessels of NAFLD + CIA rats. AAV9-mediated PTRF knockdown inhibited TLR4 signaling and alleviated hepatic fibrosis in NAFLD + CIA rats. Together, these findings indicate that NAFLD combined with CIA causes synovial injury and enhances non-alcoholic fatty liver fibrosis in rats. PTRF could attenuate the symptoms of NAFLD + CIA likely by affecting TLR4/PTRF co-expression and downstream signaling.
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Affiliation(s)
| | - Peng Zhu
- School of Pharmacy, Wannan Medical College, Wuhu, China
| | - Jianan Yuan
- School of Pharmacy, Wannan Medical College, Wuhu, China
| | - Kunming Cheng
- School of Pharmacy, Wannan Medical College, Wuhu, China
| | - Qixiang Xu
- School of Pharmacy, Wannan Medical College, Wuhu, China
| | - Wei Chen
- Boster Biological Technology Co., Ltd., Wuhan, China
| | - Zui Pan
- College of Nursing and Health Innovation, The University of Texas at Arlington, Arlington, TX, United States
| | - Yongqiu Zheng
- School of Pharmacy, Wannan Medical College, Wuhu, China
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Bretones ML, Sampaio SC, Barbeiro DF, Ariga SKK, Soriano FG, Lima TMD. Crotoxin modulates inflammation and macrophages' functions in a murine sepsis model. Toxicon 2022; 216:132-138. [PMID: 35850256 DOI: 10.1016/j.toxicon.2022.07.007] [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: 01/13/2022] [Revised: 06/23/2022] [Accepted: 07/12/2022] [Indexed: 11/19/2022]
Abstract
Sepsis is a syndrome of physiological and biochemical abnormalities induced by an infection that represents a major public health concern. It involves the early activation of inflammatory responses. Crotoxin (CTX), the major toxin of the South American rattlesnake Crotalus durissus terrificus venom, presents longstanding anti-inflammatory properties. Since immune system modulation may be a strategic target in sepsis management, and macrophages' functional and secretory activities are related to the disease's progression, we evaluated the effects of CTX on macrophages from septic animals. Balb/c male mice submitted to cecal ligation and puncture (CLP) were treated with CTX (0.9 μg/animal, subcutaneously) 1 h after the procedure and euthanized after 6 h. We used plasma samples to quantify circulating cytokines and eicosanoids. Bone marrow differentiated macrophages (BMDM) were used to evaluate the CTX effect on macrophages' functions. Our data show that CTX administration increased the survival rate of the animals from 40% to 80%. Septic mice presented lower plasma concentrations of IL-6 and TNF-α after CTX treatment, and higher concentrations of LXA4, PGE2, and IL-1β. No effect was observed in IL-10, IFN-γ, and RD1 concentrations. BMDM from septic mice treated with CTX presented decreased capacity of E. coli phagocytosis, but sustained NO and H2O2 production. We also observed higher IL-6 concentration in the culture medium of BMDM from septic mice, and CTX induced a significant reduction. CTX treatment increased IL-10 production by macrophages as well. Our data show that the protective effect of CTX in sepsis mortality involves modulation of macrophage functions and inflammatory mediators' production.
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Affiliation(s)
- Marisa Langeani Bretones
- Laboratório de Emergências Clínicas (LIM51), Faculdade de Medicina da Universidade de São Paulo, Brazil
| | | | - Denise Frediani Barbeiro
- Laboratório de Emergências Clínicas (LIM51), Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - Suely K Kubo Ariga
- Laboratório de Emergências Clínicas (LIM51), Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - Francisco Garcia Soriano
- Laboratório de Emergências Clínicas (LIM51), Faculdade de Medicina da Universidade de São Paulo, Brazil
| | - Thais Martins de Lima
- Laboratório de Emergências Clínicas (LIM51), Faculdade de Medicina da Universidade de São Paulo, Brazil.
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Huang W, Hong Y, He W, Jiang L, Deng W, Peng B, Tang F, Shen C, Lan Q, Huang H, Zhong H, Lv J, Zeng S, Li M, OuYang Y, Liang J, Mo Z, Chen Q, Cui L, Zhang M, Xu F, Zhou Z. Cavin-1 promotes M2 macrophages/microglia polarization via SOCS3. Inflamm Res 2022; 71:397-407. [PMID: 35275225 DOI: 10.1007/s00011-022-01550-w] [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: 10/01/2021] [Revised: 02/13/2022] [Accepted: 02/17/2022] [Indexed: 11/27/2022] Open
Abstract
PURPOSE Our study aimed to investigate the function of Cavin-1 and SOCS3 in macrophages/microglia M2 polarization and further explored the relevant mechanism. METHODS Expression levels of Cavin-1 and SOCS3 in macrophages/microglia were measured by western blotting and RT-PCR, respectively. Then, Cavin-1 or SOCS3 was gene silenced by a siRNA approach, and gene silencing efficiency was determined by western blotting. Next, co-immunoprecipitation (Co-IP) was employed to further analyze the interaction between Cavin-1 and SOCS3. Finally, the activation of STAT6/PPAR-γ signaling was evaluated using western blotting, and the M2 macrophages/microglia polarization was validated by measuring the mRNA expression of M2 markers by RT-PCR. RESULTS In the polarization process of macrophages/microglia to M2 phenotype, both Cavin-1 and SOCS3 increased synchronously at protein and mRNA level, reached the peak at the 6 h, and then decreased. After Cavin-1 or SOCS3 silencing, the expression of Cavin-1 and SOCS3 declined. These results suggested that Cavin-1 and SOCS3 were positively correlated in macrophages/microglia, and this conjecture was verified by Co-IP. Besides, Cavin-1 silencing not only suppressed the activation of STAT6/PPAR-γ pathway, but also suppressed the release of anti-inflammatory factors. Finally, we found that SOCS3 overexpression reversed the inhibitory effect of Cavin-1 silencing on the release of anti-inflammatory factors in M2 macrophages/microglia. CONCLUSIONS Cavin-1 and SOCS3 are actively involved in the process of M2 macrophages/microglia polarization. As a SOCS3 interacting protein, Cavin-1 can promote M2 macrophages/microglia polarization via SOCS3.
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Affiliation(s)
- Wei Huang
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Yiyi Hong
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Wenjing He
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Li Jiang
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Wen Deng
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Biyan Peng
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Fen Tang
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Chaolan Shen
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Qianqian Lan
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Hui Huang
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Haibin Zhong
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Jian Lv
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Siming Zeng
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Min Li
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Yiqiang OuYang
- Laboratory Animal Center, Guangxi Medical University, Nanning, 530021, China
| | - Jinning Liang
- Laboratory Animal Center, Guangxi Medical University, Nanning, 530021, China
| | - Zhongxiang Mo
- Laboratory Animal Center, Guangxi Medical University, Nanning, 530021, China
| | - Qi Chen
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Ling Cui
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Mingyuan Zhang
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Fan Xu
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China.
| | - Zhou Zhou
- Guangxi Health Commission Key Laboratory of Ophthalmology and Related Systemic Diseases Artificial Intelligence Screening Technology & Research Center of Ophthalmology, Guangxi Academy of Medical Sciences & Department of Ophthalmology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China.
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Zhou HH, Zhang YM, Zhang SP, Xu QX, Tian YQ, Li P, Cao D, Zheng YQ. Suppression of PTRF Alleviates Post-Infectious Irritable Bowel Syndrome via Downregulation of the TLR4 Pathway in Rats. Front Pharmacol 2021; 12:724410. [PMID: 34690766 PMCID: PMC8529073 DOI: 10.3389/fphar.2021.724410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 08/13/2021] [Indexed: 12/15/2022] Open
Abstract
Background: Accumulating evidence suggests that the polymerase I and transcript release factor (PTRF), a key component of the caveolae structure on the plasma membrane, plays a pivotal role in suppressing the progression of colorectal cancers. However, the role of PTRF in the development of functional gastrointestinal (GI) disorders remains unclear. Post-infectious irritable bowel syndrome (PI-IBS) is a common functional GI disorder that occurs after an acute GI infection. Here, we focused on the role of PTRF in the occurrence of PI-IBS and investigated the underlying mechanisms. Methods: Lipopolysaccharide (LPS) (5 μg/ml) was used to induce inflammatory injury in human primary colonic epithelial cells (HCoEpiCs). Furthermore, a rat model of PI-IBS was used to study the role of PTRF. Intestinal sensitivity was assessed based on the fecal water content. A two-bottle sucrose intake test was used to evaluate behavioral changes. Furthermore, shRNA-mediated knockdown of PTRF was performed both in vitro and in vivo. We detected the expression of PTRF in colonic mucosal tissues through immunohistochemistry (IHC), western blotting (WB), and immunofluorescence (IF) analysis. Luciferase activity was quantified using a luciferase assay. Co-localization of PTRF and Toll-like receptor 4 (TLR4) was detected using IF analysis. The activation of the signaling pathways downstream of TLR4, including the iNOs, p38, extracellular signal-regulated kinase (ERK), and c-Jun N-terminal kinase (JNK) pathways, was detected via WB. The levels of NO, IL-1β, IL-6, and TNF-α were measured using enzyme-linked immunosorbent assays. Results: LPS significantly induced PTRF expression and signaling downstream of TLR4, including p38, ERK, and JNK pathways, in HCoEpiCs. Moreover, shRNA-mediated knockdown of PTRF in HCoEpiCs significantly decreased the phosphorylation of JNK, ERK, and p38 and iNOS expression. In PI-IBS rats, the lack of PTRF not only reduced fecal water content and suppressed depressive behavior but also increased the body weight. Furthermore, we found a strong co-localization pattern for PTRF and TLR4. Consistently, the lack of PTRF impaired TLR4 signaling, as shown by the decreased levels of p-JNK, p-ERK, and p-p38, which are upstream factors involved in iNOS expression. Conclusion: PTRF promoted PI-IBS and stimulated TLR4 signaling both in vitro and in vivo. The results of this study not only enlighten the pathogenesis of PI-IBS but also help us understand the biological activity of PTRF and provide an important basis for the clinical treatment of PI-IBS by targeting PTRF.
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Affiliation(s)
| | | | | | | | | | | | - Di Cao
- Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Teaching and Research Section of Traditional Chinese Medicine, School of Pharmacy, Wannan Medical College, Wuhu, China
| | - Yong-qiu Zheng
- Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Teaching and Research Section of Traditional Chinese Medicine, School of Pharmacy, Wannan Medical College, Wuhu, China
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Wang Z, Tu Z, Xie X, Cui H, Kong KW, Zhang L. Perilla frutescens Leaf Extract and Fractions: Polyphenol Composition, Antioxidant, Enzymes (α-Glucosidase, Acetylcholinesterase, and Tyrosinase) Inhibitory, Anticancer, and Antidiabetic Activities. Foods 2021; 10:foods10020315. [PMID: 33546380 PMCID: PMC7913586 DOI: 10.3390/foods10020315] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 01/29/2021] [Accepted: 01/30/2021] [Indexed: 02/06/2023] Open
Abstract
This study aims to evaluate the bioactive components, in vitro bioactivities, and in vivo hypoglycemic effect of P. frutescens leaf, which is a traditional medicine-food homology plant. P. frutescens methanol crude extract and its fractions (petroleum ether, chloroform, ethyl acetate, n-butanol fractions, and aqueous phase residue) were prepared by ultrasound-enzyme assisted extraction and liquid-liquid extraction. Among the samples, the ethyl acetate fraction possessed the high total phenolic (440.48 μg GAE/mg DE) and flavonoid content (455.22 μg RE/mg DE), the best antioxidant activity (the DPPH radical, ABTS radical, and superoxide anion scavenging activity, and ferric reducing antioxidant power were 1.71, 1.14, 2.40, 1.29, and 2.4 times higher than that of control Vc, respectively), the most powerful α-glucosidase inhibitory ability with the IC50 value of 190.03 μg/mL which was 2.2-folds higher than control acarbose, the strongest proliferative inhibitory ability against MCF-7 and HepG2 cell with the IC50 values of 37.92 and 13.43 μg/mL, which were considerable with control cisplatin, as well as certain inhibition abilities on acetylcholinesterase and tyrosinase. HPLC analysis showed that the luteolin, rosmarinic acid, rutin, and catechin were the dominant components of the ethyl acetate fraction. Animal experiments further demonstrated that the ethyl acetate fraction could significantly decrease the serum glucose level, food, and water intake of streptozotocin-induced diabetic SD rats, increase the body weight, modulate their serum levels of TC, TG, HDL-C, and LDL-C, improve the histopathology and glycogen accumulation in liver and intestinal tissue. Taken together, P. frutescens leaf exhibits excellent hypoglycemic activity in vitro and in vivo, and could be exploited as a source of natural antidiabetic agent.
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Affiliation(s)
- Zhenxing Wang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China; (Z.W.); (L.Z.)
- College of Life Sciences, Southwest Forestry University, Kunming 650224, China
| | - Zongcai Tu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China; (Z.W.); (L.Z.)
- College of Life Sciences, Jiangxi Normal University, Nanchang 330022, China;
- National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;
- Correspondence: ; Tel.: +86-791-8812-1868
| | - Xing Xie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;
| | - Hao Cui
- College of Life Sciences, Jiangxi Normal University, Nanchang 330022, China;
| | - Kin Weng Kong
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia;
| | - Lu Zhang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China; (Z.W.); (L.Z.)
- College of Life Sciences, Jiangxi Normal University, Nanchang 330022, China;
- National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China
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Fu Y, Wang Z, Lu B, Zhao S, Zhang Y, Zhao Z, Zhang C, Li J, Zhou B, Guo Z, Qian J, Liu L. Immune response and differentially expressed proteins in the lung tissue of BALB/c mice challenged by aerosolized Brucella melitensis 5. J Int Med Res 2018; 46:4740-4752. [PMID: 30282518 PMCID: PMC6259401 DOI: 10.1177/0300060518799879] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Objective This study was performed to develop a murine aerosol infection model of brucellosis to investigate the pathogenicity and immune reactions induced by aerosolized Brucella and to identify key proteins associated with Brucella infection in lung tissue. Methods BALB/c mice were exposed to aerosolized Brucella melitensis 5 (M5) for 30 minutes and killed at 1, 3, 7, and 15 days post-exposure. Clinical observation, pathological analysis of lung tissue, and cytokine expression detection were then performed. Proteomic analysis based on two-dimensional electrophoresis and mass spectrometry was used to identify proteins exhibiting significant changes in expression in lung tissues during Brucella infection. Results Pathological analysis revealed alveolar wall thickening, telangiectasia with hyperemia, inflammatory cell infiltration, large areas of congestion and bleeding, and areas of focal necrosis. The T-helper 1 type immune response played an important role during aerosol infection, and 12 differentially expressed proteins were involved in the infectious process in lung tissue. Conclusion These results contribute to our understanding of the pathogenic process of Brucella in the lung tissue of BALB/c mice challenged with aerosolized Brucella. Some of the identified proteins may be potential targets in future therapeutic strategies.
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Affiliation(s)
- Yingying Fu
- Academy of Military Medical Sciences, Beijing, China
| | - Zhongyi Wang
- Academy of Military Medical Sciences, Beijing, China
| | - Bing Lu
- Academy of Military Medical Sciences, Beijing, China
| | - Siyan Zhao
- Academy of Military Medical Sciences, Beijing, China
| | - Yi Zhang
- Academy of Military Medical Sciences, Beijing, China
| | | | - Chunmao Zhang
- Academy of Military Medical Sciences, Beijing, China
| | - Jiaming Li
- Academy of Military Medical Sciences, Beijing, China
| | - Bo Zhou
- Academy of Military Medical Sciences, Beijing, China
| | - Zhendong Guo
- Academy of Military Medical Sciences, Beijing, China
| | - Jun Qian
- Academy of Military Medical Sciences, Beijing, China
| | - Linna Liu
- Academy of Military Medical Sciences, Beijing, China
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9
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Dou H, Song Y, Liu X, Yang L, Jiang N, Chen D, Li E, Tan R, Hou Y. A novel benzenediamine derivate rescued mice from experimental sepsis by attenuating proinflammatory mediators via IRAK4. Am J Respir Cell Mol Biol 2014; 51:191-200. [PMID: 24588661 DOI: 10.1165/rcmb.2013-0411oc] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
We designed and synthesized a novel benzenediamine derivate, FC-99, that was tested for its ability to protect mice from experimental sepsis. Moreover, we sought to determine whether FC-99 could control a bacterial infection and to clarify the mechanism by which FC-99 inhibited LPS-activated macrophages. The effects of FC-99 on inflammation were evaluated in two experimental sepsis models and in cultured macrophages. Microarrays and docking and molecular dynamics simulations were used to determine the target of FC-99. Surface plasmon resonance and molecular detection were performed to confirm the direct interaction of FC-99 with its target. FC-99 protected mice from experimental sepsis. The mice that received FC-99 exhibited a diminished inflammatory response, had a lower local bacterial burden, and experienced a significantly improved survival rate. Genome-wide transcriptional profiling of FC-99-treated macrophages identified IRAK4 as a drug-regulated gene involved in LPS/TLR4 signaling. A computer search and calculations indicated that IRAK4 directly interacted with FC-99. Surface plasmon resonance, IRAK4-regulated signaling pathway analysis, and gene expression profiling of proinflammatory mediators confirmed the direct interaction between FC-99 and IRAK4. FC-99 is a potential therapeutic molecule for sepsis that alleviated experimental sepsis by directly inhibiting IRAK4 activation, which represents a novel target for sepsis therapy.
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Affiliation(s)
- Huan Dou
- 1 The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School
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Moon HG, Yang J, Zheng Y, Jin Y. miR-15a/16 regulates macrophage phagocytosis after bacterial infection. THE JOURNAL OF IMMUNOLOGY 2014; 193:4558-67. [PMID: 25261473 DOI: 10.4049/jimmunol.1401372] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Bacterial infection and its associated sepsis are devastating clinical entities that lead to high mortality and morbidity in critically ill patients. Phagocytosis, along with other innate immune responses, exerts crucial impacts on the outcomes of these patients. MicroRNAs (miRNAs) are a novel class of regulatory noncoding RNAs that target specific mRNAs for modulation of translation and expression of a targeted protein. The roles of miRNAs in host defense against bacterial sepsis remain unclear. We found that bacterial infections and/or bacterial-derived LPS enhanced the level of miR-15a/16 in bone marrow-derived macrophages (BMDMs). Deletion of miR-15a/16 (miR-15a/16(-/-)) in myeloid cells significantly decreased the bacterial infection-associated mortality in sepsis mouse models. Moreover, miR-15a/16 deficiency (miR-15a/16(-/-)) resulted in augmented phagocytosis and generation of mitochondrial reactive oxygen species in BMDMs. Supportively, overexpression of miR-15a/16 using miRNA mimics led to decreased phagocytosis and decreased generation of mitochondrial reactive oxygen species. Mechanistically, deletion of miR-15a/16 upregulated the expression of TLR4 via targeting the principle transcriptional regulator PU.1 locating on the promoter region of TLR4, and further modulated the downstream signaling molecules of TLR4, including Rho GTPase Cdc 42 and TRAF6. In addition, deficiency of miR-15a/16 also facilitated TLR4-mediated proinflammatory cytokine/chemokine release from BMDMs at the initial phase of infections. Taken together, miR-15a/16 altered phagocytosis and bacterial clearance by targeting, at least partially, on the TLR4-associated pathways, subsequently affecting the survival of septic mice.
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Affiliation(s)
- Hyung-Geun Moon
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115; and
| | - Jincheng Yang
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115; and
| | - Yijie Zheng
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115; and Department of Hematology, Columbia University, New York, NY 10032
| | - Yang Jin
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115; and
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Emerging role of polymerase-1 and transcript release factor (PTRF/ Cavin-1) in health and disease. Cell Tissue Res 2014; 357:505-13. [PMID: 25107607 DOI: 10.1007/s00441-014-1964-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Accepted: 07/04/2014] [Indexed: 01/06/2023]
Abstract
Polymerase-1 and release transcript factor (PTRF) was initially reported to be involved in the termination of the transcription process. More recently, it has been implicated in the formation of caveolae, cave-like structures in the plasma membrane. The effects of PTRF related to caveolae suggest that this protein may play important roles in health and disease. PTRF is highly expressed in various cells, including adipocytes, osteoblasts and muscle (cardiac, skeletal and smooth) cells. The role of PTRF in prostate cancer has been recently reviewed but there is growing evidence that PTRF is involved in other physiological processes such as cell repair and the regulation of glucose and lipid metabolism and, furthermore, altered expression of PTRF may be associated with disease. This review discusses the emerging role of PTRF in health and disease.
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