1
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Liao YQ, Fang BB, Wu QX, Dong WY, Deng GM. Verapamil modulates NFAT2 to inhibit tumor growth and potentiates PD1ab immune checkpoint inhibitor therapy in cervical cancer treatment. J Recept Signal Transduct Res 2023; 43:93-101. [PMID: 38070127 DOI: 10.1080/10799893.2023.2291562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 11/15/2023] [Indexed: 01/23/2024]
Abstract
PURPOSE Current evidence suggests a high co-prevalence of hypertension and cervical cancer. Accordingly, blood pressure control is indicated during anti-tumor drug therapy in this patient population. Over the past few years, immunotherapy has made great strides in treating different cancers. However, the role and clinical significance of verapamil as a first-line anti-hypertensive drug during immunotherapy remain poorly understood, emphasizing the need for further studies. METHODS Murine cervical cancer models were employed to assess the effect of verapamil monotherapy and combination with PD1ab. Immunohistochemistry was conducted to quantify the abundance of CD8+ T cell and Ki67+ cells. Several in-vitro and in-vivo assays were used to study the effects of verapamil and explore the preliminary mechanism. RESULTS Monotherapy with verapamil or PD1ab immune checkpoint inhibitor significantly suppressed the growth of subcutaneously grafted U14 cells in WT BABL/c mice, respectively, with increased survival time of mice. Consistent results were observed in the melanoma model. Furthermore, we substantiated that verapamil significantly impaired tumor proliferation and migration of SiHa human cervical cancer cells in vitro and in vivo. In silico analysis using TCGA data revealed that NFAT2 expression negatively correlated with patient survival. The CCK8 assay revealed that verapamil abrogated the stimulatory effect of NFAT2 after knockdown of NFAT2. CONCLUSIONS Our results suggest that verapamil inhibits tumor growth by modulating NFAT2 expression and enhancing tumor immune responses to PD1ab, which can be harnessed for cervical cancer therapy, especially for patients with comorbid hypertension. Indeed, further clinical trials are warranted to increase the robustness of our findings.
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Affiliation(s)
- Yao-Qing Liao
- Zhu Hai Center for Maternal and Child Health Care, Zhu Hai Women and Children's Hospital, Zhuhai, Xiangzhou, China
| | - Bin-Bo Fang
- Department of Medicine, Taizhou University, Zhejiang, China
| | - Qing-Xia Wu
- The First People's Hospital of Shunde, Shunde Hospital of Southern Medical University, Foshan, China
| | - Wei-Ying Dong
- Zhu Hai Center for Maternal and Child Health Care, Zhu Hai Women and Children's Hospital, Zhuhai, Xiangzhou, China
| | - Guan-Ming Deng
- Zhu Hai Center for Maternal and Child Health Care, Zhu Hai Women and Children's Hospital, Zhuhai, Xiangzhou, China
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2
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Yang J, Li B, Liu SW, Biswas MK, Liu S, Wei YR, Zuo CW, Deng GM, Kuang RB, Hu CH, Yi GJ, Li CY. Fermentation of Foc TR4-infected bananas and Trichoderma spp. Genet Mol Res 2016; 15:gmr-15-gmr15048494. [PMID: 27813563 DOI: 10.4238/gmr15048494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Fusarium wilt (also known as Panama disease) is one of the most destructive banana diseases, and greatly hampers the global production of bananas. Consequently, it has been very detrimental to the Chinese banana industry. An infected plant is one of the major causes of the spread of Fusarium wilt to nearby regions. It is essential to develop an efficient and environmentally sustainable disease control method to restrict the spread of Fusarium wilt. We isolated Trichoderma spp from the rhizosphere soil, roots, and pseudostems of banana plants that showed Fusarium wilt symptoms in the infected areas. Their cellulase activities were measured by endoglucanase activity, β-glucosidase activity, and filter paper activity assays. Safety analyses of the Trichoderma isolates were conducted by inoculating them into banana plantlets. The antagonistic effects of the Trichoderma spp on the Fusarium pathogen Foc tropical Race 4 (Foc TR4) were tested by the dual culture technique. Four isolates that had high cellulase activity, no observable pathogenicity to banana plants, and high antagonistic capability were identified. The isolates were used to biodegrade diseased banana plants infected with GFP-tagged Foc TR4, and the compost was tested for biological control of the infectious agent; the results showed that the fermentation suppressed the incidence of wilt and killed the pathogen. This study indicates that Trichoderma isolates have the potential to eliminate the transmission of Foc TR4, and may be developed into an environmentally sustainable treatment for controlling Fusarium wilt in banana plants.
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Affiliation(s)
- J Yang
- The College of Life Science, South China Agricultural University, Guangzhou, China
| | - B Li
- The College of Life Science, South China Agricultural University, Guangzhou, China
| | - S W Liu
- The College of Life Science, South China Agricultural University, Guangzhou, China
| | - M K Biswas
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China.,Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
| | - S Liu
- The College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Y R Wei
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China.,Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
| | - C W Zuo
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China.,Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
| | - G M Deng
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China.,Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
| | - R B Kuang
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China.,Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
| | - C H Hu
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China.,Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
| | - G J Yi
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China .,Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
| | - C Y Li
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China .,Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
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3
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Abstract
Unmethylated CpG motifs are frequently found in bacterial DNA, and have recently been shown to exert immunostimulatory effects on leukocytes. Since bacterial infections in the CNS will lead to local release of prokaryotic DNA, we wanted to investigate whether such an event might trigger meningitis. To that end, we have intracisternally injected mice and rats with bacterial DNA and oligonucleotides containing CpG motifs. Histopathological signs of meningitis were evident within 12 h and lasted for at least 14 days, and were characterized by an influx of monocytic, Mac-3(+) cells and by a lack of T lymphocytes. To study the mechanisms whereby unmethylated CpG DNA gives rise to meningitis, we deleted the monocyte/macrophage population leading to abrogation of brain inflammation. Also, interaction with NF-kappaB using antisense technology led to down-regulation of proinflammatory cytokine production and frequency of meningitis. Furthermore, specific interactions with vascular selectin expression and inhibition of NO synthase led to a significant amelioration of meningitis, altogether indicating that this condition is dependent on macrophages and their products. In contrast, neutrophils, NK cells, T/B lymphocytes, IL-12, and complement system were not instrumental in meningitis triggered by bacterial DNA containing CpG motifs. This study proves that bacterial DNA containing unmethylated CpG motifs induces meningitis, and indicates that this condition is mediated in vivo by activated macrophages.
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Affiliation(s)
- G M Deng
- Department of Rheumatology, Göteborg University, Göteborg, Sweden.
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4
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Liu ZQ, Deng GM, Foster S, Tarkowski A. Staphylococcal peptidoglycans induce arthritis. Arthritis Res 2001; 3:375-80. [PMID: 11714392 PMCID: PMC64849 DOI: 10.1186/ar330] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2001] [Revised: 08/15/2001] [Accepted: 08/24/2001] [Indexed: 11/10/2022]
Abstract
Staphylococcus aureus is one of the most important pathogens in septic arthritis. To analyse the arthritogenic properties of staphylococcal peptidoglycan (PGN), highly purified PGN from S. aureus was intra-articularly injected into murine joints. The results demonstrate that PGN will trigger arthritis in a dose-dependent manner. A single injection of this compound leads to massive infiltration of predominantly macrophages and polymorphonuclear cells with occasional signs of cartilage and/or bone destruction, lasting for at least 14 days. Further studies showed that this condition is mediated by the combined impact of acquired and innate immune systems. Our results indicate that PGN exerts a central role in joint inflammation triggered by S. aureus.
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MESH Headings
- Animals
- Animals, Congenic
- Antigens, Bacterial/immunology
- Antigens, Bacterial/pharmacology
- Arthritis, Infectious/chemically induced
- Arthritis, Infectious/immunology
- Arthritis, Infectious/microbiology
- Dose-Response Relationship, Drug
- Immunohistochemistry
- Knee Joint/immunology
- Macrophage-1 Antigen/analysis
- Macrophages/chemistry
- Macrophages/immunology
- Macrophages/microbiology
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, SCID
- Peptide Fragments/immunology
- Peptide Fragments/pharmacology
- Peptidoglycan/immunology
- Peptidoglycan/metabolism
- Peptidoglycan/pharmacology
- Staphylococcus aureus/immunology
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Affiliation(s)
- Z Q Liu
- Department of Rheumatology, University of Göteborg, Sweden.
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5
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Deng GM, Tarkowski A. Synovial cytokine mRNA expression during arthritis triggered by CpG motifs of bacterial DNA. Arthritis Res 2001; 3:48-53. [PMID: 11178126 PMCID: PMC17824 DOI: 10.1186/ar139] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2000] [Revised: 08/29/2000] [Accepted: 09/07/2000] [Indexed: 11/10/2022]
Abstract
Our results show that cytokines derived from macrophages play an important role in pathogenesis of arthritis triggered by CpG oligodinucleotide (CpG ODN). IL-12 is in this respect an important immunomodulator during the development of joint inflammation.
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MESH Headings
- Adjuvants, Immunologic/administration & dosage
- Animals
- Arthritis, Experimental/immunology
- Arthritis, Experimental/microbiology
- Arthritis, Experimental/pathology
- Cell-Free System/immunology
- Cells, Cultured
- CpG Islands/immunology
- Cytokines/biosynthesis
- Cytokines/immunology
- Cytokines/metabolism
- DNA, Bacterial/immunology
- Inflammation/immunology
- Interleukin-12/biosynthesis
- Interleukin-12/deficiency
- Interleukin-12/genetics
- Interleukin-12/metabolism
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Oligodeoxyribonucleotides/administration & dosage
- Oligodeoxyribonucleotides/immunology
- RNA, Messenger/biosynthesis
- RNA, Messenger/immunology
- Synovial Membrane/immunology
- Synovial Membrane/metabolism
- Synovial Membrane/pathology
- Tumor Necrosis Factor-alpha/metabolism
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Affiliation(s)
- G M Deng
- Department of Rheumatology, University of Göteborg, Göteborg, Sweden.
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6
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Deng GM, Verdrengh M, Liu ZQ, Tarkowski A. The major role of macrophages and their product tumor necrosis factor alpha in the induction of arthritis triggered by bacterial DNA containing CpG motifs. Arthritis Rheum 2000; 43:2283-9. [PMID: 11037888 DOI: 10.1002/1529-0131(200010)43:10<2283::aid-anr16>3.0.co;2-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To understand the mechanisms of arthritis triggered by CpG-containing oligonucleotides (ODN). METHODS Following the induction of CpG ODN-triggered arthritis in mice, we analyzed the impact of depletion of immune cells, including neutrophils, natural killer (NK) cells, and monocyte/macrophages, on the arthritis, as well as the impact in SCID mice lacking T and B cells. In addition, tumor necrosis factor alpha (TNFalpha) knockout mice were studied, and intraarticular administration of p65 antisense to nuclear factor kappaB (NF-kappaB) was used to examine effects in CpG ODN-triggered arthritis. Cytokine messenger RNA expression in synovial tissue was evaluated by in situ hybridization. RESULTS The presence of macrophages was mandatory for the mediation of arthritis triggered by CpG ODN, whereas the absence of neutrophils, NK cells, T cells, and B cells was of minor importance in this regard. The proinflammatory cytokines TNFalpha, interleukin-1beta, and interleukin-12, which originate from macrophages, were frequently found in the inflamed joints, and TNFalpha was confirmed to be an important mediator in the development of arthritis, since the incidence and severity of joint inflammation were markedly reduced in TNFalpha knockout mice. NF-kappaB exerted an important regulatory role in the development of CpG ODN-mediated arthritis, since local administration of antisense to the p65 subunit of NF-kappaB diminished the incidence of inflammation by 50%. CONCLUSION Macrophages and their products play an important role in the development of arthritis triggered by bacterial DNA containing CpG motifs.
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Affiliation(s)
- G M Deng
- Department of Rheumatology, Göteborg University, Sweden
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7
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Abstract
Unmethylated CpG motifs are frequently found in bacterial DNA and have recently been shown to exert immunostimulatory effects on leukocytes. Bacteria produce severe septic arthritis; bacterial DNA may be involved in this process. We injected intraarticularly bacterial DNA and oligonucleotides containing unmethylated CpG motifs into knee joints of mice. Arthritis was seen by histopathology within 2 h and lasted for at least 14 days, and was characterized by an influx of monocytic, Mac-1+ cells and by a lack of T lymphocytes. Macrophages and their products such as tumor necrosis factor (TNF) alpha are essential for development of arthritis triggered by bacterial DNA containing CpG motifs. In contrast, neurophils, NK cells, and T/B cells were not instrumental in this condition. This review demonstrates that bacterial DNA containing unmethylated CpG motifs induces arthritis and indicates an important pathogenic role for bacterial DNA in septic arthritis.
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Affiliation(s)
- G M Deng
- Department of Rheumatology, Goteborg University, S-41346 Goteborg, Sweden
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8
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Zhu QQ, Yang H, Lin XG, Deng GM. [Treatment of oral leukoplakia with chinese herbs(No.1) and transferrin factor]. Shanghai Kou Qiang Yi Xue 2000; 9:47-8. [PMID: 15014854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- Q Q Zhu
- Department of Dentistry, Central Hospital of Shaoyang City. Shaoyang 422000, Hunan province, China
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9
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Abstract
OBJECTIVE To investigate the features of arthritis induced by bacterial DNA that contain CpG motifs. METHODS Bacterial DNA originating from Escherichia coli and Staphylococcus aureus or synthetic oligonucleotides containing CpG motifs were injected directly into knee joints of mice. Histopathologic joint damage, antibody levels, cytokine levels, and synovial messenger RNA (mRNA) expression of cytokines and chemokines were assessed. RESULTS Histopathologic signs of arthritis were evident within 2 hours and lasted for at least 3 weeks. Nonmethylated CpG motifs were responsible for the induction of arthritis since oligonucleotides containing these motifs triggered arthritis, whereas methylation of these nucleotides abrogated the inflammatory response. Arthritis was characterized by an influx of monocytic, Mac-1+ cells and by a scarcity of T lymphocytes. The disease was characterized locally by mRNA expression of macrophage-derived cytokines (tumor necrosis factor alpha, interleukin-12 [IL-12], IL-1beta) and chemokines (monocyte chemoattractant protein 1, RANTES) in arthritic joints. Systemically, the arthritis was characterized by increased levels of circulating IL-6 and immunoglobulins. CONCLUSION These findings demonstrate that bacterial DNA that contain nonmethylated CpG motifs induces arthritis, suggesting an important pathogenic role for bacterial DNA in septic arthritis.
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Affiliation(s)
- G M Deng
- Department of Rheumatology, University of Göteborg, Sweden
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10
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Zhu QQ, Yang H, Deng GM, Lim XG. [Treatment of Oral fichen planus with Traditionalchinese Medicine No.2 and Transferring Factor]. Shanghai Kou Qiang Yi Xue 1999; 8:239-41. [PMID: 15048225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- Q Q Zhu
- Department of Dentistry, Central Hospital of Shaoyang City. Shaoyang 422000, Hunan province, China
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11
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Abstract
Unmethylated CpG motifs are often found in bacterial DNA, and exert immunostimulatory effects on hematopoietic cells. Bacteria produce severe joint inflammation in septic and reactive arthritides; bacterial DNA may be involved in this process. We injected bacterial DNA originating from Escherichia coli and Staphylococcus aureus and oligonucleotides containing CpG directly into the knee joints of mice of different strains. Arthritis was seen by histopathology within 2 hours and lasted for at least 14 days. Unmethylated CpG motifs were responsible for this induction of arthritis, as oligonucleotides containing these motifs produced the arthritis. The arthritis was characterized by an influx of monocytic, Mac-1+ cells and by a lack of T lymphocytes. Depletion of monocytes resulted in abrogation of the synovial inflammation. Tumor necrosis factor (TNF)-alpha, a cytokine produced by cells of the monocyte/macrophage lineage, is an important mediator of this disease, as expression of mRNA for TNF-alpha was evident in the inflamed joints, and the CpG-mediated inflammation was abrogated in mice genetically unable to produce this cytokine. These findings demonstrate that bacterial DNA containing unmethylated CpG motifs induces arthritis, and indicate an important pathogenic role for bacterial DNA in septic arthritis.
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MESH Headings
- Animals
- Arthritis/microbiology
- Arthritis/pathology
- CpG Islands
- DNA Methylation
- DNA, Bacterial/administration & dosage
- DNA, Bacterial/genetics
- DNA, Bacterial/metabolism
- Disease Models, Animal
- Etoposide/pharmacology
- Injections, Intraperitoneal
- Interleukin-12/metabolism
- Knee Joint/microbiology
- Macrophages/metabolism
- Macrophages/microbiology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Inbred Strains
- Mice, Knockout
- Mice, SCID
- Oligonucleotides/metabolism
- Oligonucleotides/pharmacology
- Synovial Membrane/microbiology
- Synovial Membrane/pathology
- Tumor Necrosis Factor-alpha/genetics
- Tumor Necrosis Factor-alpha/metabolism
- Vertebrates
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Affiliation(s)
- G M Deng
- Department of Rheumatology, University of Göteborg, Sweden.
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12
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Zhu J, Nennesmo I, Deng GM, Levi M, Wahren B, Diab A, Mix E, Zhou JN, Ljunggren HG. Induction of experimental autoimmune neuritis in CD4-8-C57BL/6J mice. J Neuroimmunol 1999; 94:196-203. [PMID: 10376953 DOI: 10.1016/s0165-5728(98)00252-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The C57BL/6J mice strain is known to be reputedly resistant to induction of experimental autoimmune neuritis (EAN), an animal model of Guillain-Barré syndrome in humans. Here we describe the induction of EAN in mice of the C57BL/6J background by transfer into naive syngeneic recipients bovine peripheral nerve myelin (BPM)-primed donor lymph node cells that had been stimulated in vitro with the bovine peripheral nervous system (PNS) myelin P2 protein peptide 57-81 followed by challenge with BPM, Freund's complete adjuvant and pertussis toxin. EAN was more severe, both clinically and histologically, and accompanied by extensive infiltration of inflammatory cells and demyelination in peripheral nerves when examined on day 30 after transfer of primed T cells from CD4- 8- mice into identical naive hosts than after transfer of cells from primed wild type, CD4-/- or CD8-/- mice to corresponding recipient animals. EAN in CD4-8- mice was also associated with elevated numbers of P2 peptide-reactive interferon-y (TFN-gamma) secreting cells and alphabeta T cells were present in lymph nodes and spleens. The data suggest that PNS myelin activated T cells from an EAN-resistant mice strain are capable of homing to the PNS. The expanded CD4-8- alphabeta T cells may have helper and effector functions, related to initiation of EAN in the CD4-8- mice. Lack of CD4+ and CD8+ expressing cells does not prevent the initiation of an autoimmune disease.
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Affiliation(s)
- J Zhu
- Division of Neurology, Karolinska Institute, Huddinge University Hospital, Stockholm, Sweden.
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13
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Abstract
Thalidomide is reported to have immunomodulatory and anti-inflammatory effects, which have led to its use in the treatment of a number of immune-mediated disorders, including leprosy, discoid lupus and Behcet's disease, and to prevent immunological rejection phenomena following skin and bone marrow grafts. Experimental autoimmune neuritis (EAN) is a CD4+ T-cell-mediated demyelinating autoimmune disease, which represents an animal model for the study of the immunopathogenesis and immunotherapy of Guillain-Barré syndrome (GBS) in humans. We examined the effect of thalidomide in Lewis rats with EAN, which was induced by immunization with bovine peripheral nerve myelin (BPM) and complete Freund's adjuvant (CFA). Thalidomide prolonged clinical EAN when given at a dose of 200 mg/kg/day by gavage. This clinical effect was associated with increased numbers of inflammatory cells in sciatic nerve sections and elevated numbers of interferon-gamma (IFN-gamma) mRNA-expressing cells among lymph node mononuclear cells from thalidomide-treated EAN rats on day 17 postimmunization, i.e. at the peak of clinical EAN. The finding that thalidomide prolongs clinical EAN is in agreement with the clinical polyneuropathy reported in patients receiving treatment with thalidomide and limits its clinical usefulness.
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Affiliation(s)
- J Zhu
- Division of Neurology, Karolinska Institute, Huddinge University Hospital, Stockholm, Sweden
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14
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Zou LP, Zhu J, Deng GM, Levi M, Wahren B, Diab A, Hillert J, Link H. Treatment with P2 protein peptide 57-81 by nasal route is effective in Lewis rat experimental autoimmune neuritis. J Neuroimmunol 1998; 85:137-45. [PMID: 9630162 DOI: 10.1016/s0165-5728(98)00022-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Experimental autoimmune neuritis (EAN) is a CD4+ T cell-mediated autoimmune disorder of the peripheral nervous system (PNS) that can be actively induced in susceptible animal species and strains by active immunization with PNS myelin + Freund's complete adjuvant (FCA). EAN represents an animal model for studying the immunopathogenesis and treatment of Guillain-Barré syndrome (GBS), which is a major inflammatory demyelinating disease of the PNS in humans. Here, we report that treatment by nasal administration of the neuritogenic peptide 57-81 of the PNS myelin component, P2 protein, dose-dependently suppressed EAN severity and shortened clinical EAN. Clinical EAN relapse induced by rechallenge with BPM + FCA was also prevented in EAN rats receiving high dose P2 peptide. P2 peptide induced suppression of EAN was associated with PNS antigen specific T cell hyporesponsiveness reflected by lymphocyte proliferation, numbers of PNS antigen-reactive IFN-gamma secreting and IFN-gamma mRNA expressing lymph node cells, but elevated levels of PNS antigen reactive TGF-beta mRNA secreting cells. Reduced CD4+ T cell and macrophage infiltrations within the PNS were also observed. Based on these observations, nasal autoantigen administration should be further evaluated, considering its possible future use in GBS.
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Affiliation(s)
- L P Zou
- Division of Neurology, Karolinska Institute, Huddinge University Hospital, Stockholm, Sweden
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15
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Diab A, Michael L, Wahren B, Deng GM, Björk J, Hedlund G, Zhu J. Linomide suppresses acute experimental autoimmune encephalomyelitis in Lewis rats by counter-acting the imbalance of pro-inflammatory versus anti-inflammatory cytokines. J Neuroimmunol 1998; 85:146-54. [PMID: 9630163 DOI: 10.1016/s0165-5728(98)00023-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Linomide (quinoline-3-carboxamide) is a synthetic immunomodulator that suppresses several experimental autoimmune diseases. Here we report the effects of Linomide on experimental autoimmune encephalomyelitis (EAE), a CD4+ T cell-mediated animal model of multiple sclerosis (MS). EAE induced in Lewis rats by inoculation with homogenized guinea pig spinal cord and Freund's complete adjuvant was strongly suppressed by Linomide administered daily subcutaneously from the day of inoculation. Linomide dose-dependently delayed the interval between immunization and onset of clinical EAE, and reduced severity of EAE symptoms. These clinical effects were associated with dose-dependent down-modulation of myelin antigens-induced T cell responses and by suppression of the proinflammatory cytokines IFN-gamma and TNF-alpha, and upregulation IL-4, IL-10 and TGF-beta as evaluated by in situ hybridization for mRNA expression in spleen mononuclear cells and spinal cord sections. These findings suggest that Linomide could be useful in certain T cell dependent autoimmune diseases.
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Affiliation(s)
- A Diab
- Division of Neurology, Karolinska Institute, Huddinge Hospital, Stockholm, Sweden
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16
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Zhu J, Deng GM, Levi M, Wahren B, Diab A, van der Meide PH, Link H. Prevention of experimental autoimmune neuritis by nasal administration of P2 protein peptide 57-81. J Neuropathol Exp Neurol 1998; 57:291-301. [PMID: 9600221 DOI: 10.1097/00005072-199803000-00010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Experimental autoimmune neuritis (EAN) is a CD4+ T cell-mediated inflammatory demyelinating disease of the peripheral nervous system (PNS) that serves as a model for Guillain-Barre syndrome (GBS) in humans. Both EAN and GBS are associated with upregulated T and B cells responses to PNS myelin proteins including P2 protein, and by changes of the Th1/Th2 cell balance in favor of Th1. Here we report that EAN can be prevented by the dominant neuritogenic peptide 57-81 of the PNS P2 protein when given nasally before immunization of Lewis rats with bovine PNS myelin (BPM) + Freund's complete adjuvant (FCA). P2 peptide-tolerized rats were also resistant to EAN relapse after challenge with BPM. Tolerance to EAN in rats receiving high dose (60 microg/day/rat) P2 peptide nasally was associated with specific T and B cell anergy. This was characterized by the failure of T cells to proliferate in response to PNS myelin antigens, while responsiveness to phytohemagglutinin was retained. Numbers of BPM- and P2 peptide-reactive interferon-gamma mRNA expressing lymph node cells were reduced, while levels of P2 peptide-reactive interleukin 4 and transforming growth factor-beta mRNA-expressing cells were markedly upregulated on day 18 post immunization in the rats receiving high dose P2 peptide nasally. Tolerance to EAN was also associated with lower CD4+ cell infiltration, low-grade inflammation, or the absence of histological evidence of EAN, as well as with low IL-2 receptor and MHC class II molecule expression within the PNS. This is the first study showing that mucosal tolerance is applicable to EAN and, as an extension, could be considered in GBS.
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MESH Headings
- Administration, Intranasal
- Animals
- B-Lymphocytes/immunology
- Cattle
- Cell Count
- Cytokines/genetics
- Cytokines/metabolism
- Immunity, Mucosal
- Immunohistochemistry
- Lymphocyte Activation/immunology
- Male
- Myelin P2 Protein/administration & dosage
- Myelin P2 Protein/immunology
- Neuritis, Autoimmune, Experimental/immunology
- Neuritis, Autoimmune, Experimental/pathology
- Neuritis, Autoimmune, Experimental/prevention & control
- Peptide Fragments/administration & dosage
- RNA, Messenger/metabolism
- Rats
- Rats, Inbred Lew
- Sciatic Nerve/pathology
- T-Lymphocytes/immunology
- Vaccination
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Affiliation(s)
- J Zhu
- Karolinska Institute, Division of Neurology, Huddinge University Hospital, Stockholm, Sweden
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17
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Abstract
We propose an improved mathematical model for the secretion in the hypothalamo-pituitary-gonadal axis. We think this model is more reasonable than any previous one and can interpret a large number of experimental facts.
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Affiliation(s)
- B Z Liu
- Department of Physics, Northeast Normal University, JiLin, China
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