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Ochi A, Sekiguchi M, Tsujimura K, Kinoshita T, Ueno T, Katayama Y. Two Cases of Equine Multinodular Pulmonary Fibrosis in Japan. J Comp Pathol 2019; 170:46-52. [PMID: 31375158 DOI: 10.1016/j.jcpa.2019.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/20/2019] [Accepted: 05/14/2019] [Indexed: 11/28/2022]
Abstract
Equine multinodular pulmonary fibrosis (EMPF) is a recently described form of interstitial pneumonia associated with equine herpesvirus type 5 (EHV-5). This disease has been reported in North and South America, Europe and Oceania but not, to our knowledge, in horses in Japan. We diagnosed EMPF in two Thoroughbred horses in Japan on the basis of gross and histopathological findings. In both cases, significant gross lesions, restricted to the lungs, consisted of numerous firm and coalescing nodules widely distributed throughout the lung. The nodules were <3 cm in diameter and pale white to tan in colour. Microscopically, they showed severe interstitial fibrosis and infiltration of macrophages, neutrophils, lymphocytes and a few eosinophils. The residual alveoli were lined by cuboidal epithelial cells (type II pneumocytes) and filled with many macrophages, which rarely displayed oval eosinophilic to amphophilic intranuclear inclusion bodies. Polymerase chain reaction and sequence analyses identified the glycoprotein H gene of EHV-5, and in-situ hybridization detected EHV-5 in the alveolar macrophages in the lesions. In one case, electron microscopy revealed herpesvirus-like particles and EHV-5 was isolated from pulmonary lesions.
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Affiliation(s)
- A Ochi
- Equine Research Institute, Japan Racing Association, 1400-4, Shiba, Shimotsuke, Tochigi, Japan
| | - M Sekiguchi
- Chuo Livestock Hygiene Service Office of Chiba Prefecture, 497 Iwatomi-machi, Sakura, Chiba, Japan.
| | - K Tsujimura
- Equine Research Institute, Japan Racing Association, 1400-4, Shiba, Shimotsuke, Tochigi, Japan
| | - T Kinoshita
- Chuo Livestock Hygiene Service Office of Chiba Prefecture, 497 Iwatomi-machi, Sakura, Chiba, Japan
| | - T Ueno
- Equine Research Institute, Japan Racing Association, 1400-4, Shiba, Shimotsuke, Tochigi, Japan
| | - Y Katayama
- Equine Research Institute, Japan Racing Association, 1400-4, Shiba, Shimotsuke, Tochigi, Japan
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Tsujimura K, Ota M, Chinen K, Nagayama K, Oroku M, Shiohira Y, Iseki K, Ishida H, Tanabe K. Effect of Influenza Vaccine in Patients With Kidney Transplant. Transplant Proc 2018; 50:2443-2446. [PMID: 30316375 DOI: 10.1016/j.transproceed.2018.02.186] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 02/26/2018] [Indexed: 01/27/2023]
Abstract
BACKGROUND Among infectious diseases, influenza is the most common cause of infection in Japan and worldwide. We aimed to evaluate the effect of influenza vaccination in kidney transplantation (KTx) recipients. METHODS We retrospectively evaluated the records of 98 participants who underwent KTx at our institution between March 2009 and May 2016. All patients received tacrolimus or cyclosporine, mycophenolate mofetil, and methylprednisolone for maintenance immunosuppression after KTx. In accordance with the criteria of our institution, everolimus was administered for the maintenance of immunosuppression after KTx. We compared the rate of influenza infection during the 2016-2017 season (8 months, from October 2016-May 2017) between KTx patients treated with 1 or 2 doses of influenza vaccine (treatment group, n = 71) and KTx patients who did not receive a vaccine (nontreatment group, n = 27). RESULTS Among patient characteristics, only the prevalence of diabetes mellitus differed significantly between the groups (treatment group: 9.9%, 7 of 71 patients; nontreatment group: 29.6%, 8 of 21 patients; P = .02). Influenza infection occurred at similar rates in the 2 groups (treatment group, 5.63% 4 of 71 patients; nontreatment group: 3.70%, 1 of 27 patients; P = .70). CONCLUSIONS Among KTx patients managed in our institution, treatment with 1 or 2 doses of influenza vaccine did not reduce the rate of influenza infection in the 2016-2017 season, suggesting that influenza vaccination may currently be ineffective in KTx patients.
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Affiliation(s)
- K Tsujimura
- Department of Surgery, Tomishiro Central Hospital, Okinawa, Japan.
| | - M Ota
- Department of Surgery, Tomishiro Central Hospital, Okinawa, Japan
| | - K Chinen
- Department of Surgery, Tomishiro Central Hospital, Okinawa, Japan
| | - K Nagayama
- Department of Nephrology, Tomishiro Central Hospital, Okinawa, Japan
| | - M Oroku
- Department of Nephrology, Tomishiro Central Hospital, Okinawa, Japan
| | - Y Shiohira
- Department of Nephrology, Tomishiro Central Hospital, Okinawa, Japan
| | - K Iseki
- Clinical Research Support Center, Tomishiro Central Hospital, Okinawa, Japan
| | - H Ishida
- Department of Urology, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| | - K Tanabe
- Department of Urology, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
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Satake Y, Nakamura Y, Kono M, Hozumi H, Nagata T, Tsujimura K, Enomoto N, Fujisawa T, Inui N, Fujiyama T, Tokura Y, Matsui T, Yokomura K, Shirai M, Hayakawa H, Suda T. Type-1 polarised dendritic cells are a potent immunogen against Mycobacterium tuberculosis. Int J Tuberc Lung Dis 2018; 21:523-530. [PMID: 28399967 DOI: 10.5588/ijtld.16.0371] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE Application of immunotherapy using dendritic cells (DCs) is considered an effective treatment strategy against persistent Mycobacterium tuberculosis infection. With the goal of developing improved therapeutic vaccination strategies for patients with tuberculosis (TB), we tested the ability of ex vivo-generated DCs to induce an effective TB antigen-specific type-1 immune response. METHODS Monocyte-derived DCs from TB patients were induced to mature using a 'standard' cytokine cocktail (interleukin [IL] 1β, tumour necrosis factor alpha [TNF-α], IL-6 and prostaglandin E2) or a type 1-polarised DC (DC1) cocktail (IL-1β, TNF-α, interferon [IFN] α, IFN-γ and polyinosinic:polycytidylic acid), and were loaded with the established TB antigen 6-kDa early secretory antigenic target protein (ESAT-6). RESULTS Although DC1s from TB patients expressed the same levels of multiple co-stimulatory molecules (CD83, CD86, CD80 and CD40) as the standard DCs (sDCs), DC1s secreted substantially higher levels of IL-12p70. Furthermore, when DCs pulsed with or without ESAT-6 were cultured with lymphocytes from the same patients, DC1s induced much higher numbers of ESAT-6-specific IFN-γ-producing T-cells than sDCs, as manifested by their superior induction of natural killer cell activation and antigen-independent suppression of regulatory T-cells. CONCLUSION TB antigen-loaded DC1s are potent inducers of antigen-specific T-cells, which could be used to develop improved immunotherapies of TB.
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Affiliation(s)
- Y Satake
- Second Division, Department of Internal Medicine
| | - Y Nakamura
- Second Division, Department of Internal Medicine
| | - M Kono
- Second Division, Department of Internal Medicine
| | - H Hozumi
- Second Division, Department of Internal Medicine
| | | | - K Tsujimura
- Department of Infectious Disease, Department of Health Science
| | - N Enomoto
- Second Division, Department of Internal Medicine
| | - T Fujisawa
- Second Division, Department of Internal Medicine
| | - N Inui
- Second Division, Department of Internal Medicine, Department of Clinical Pharmacology and Therapeutics
| | - T Fujiyama
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu
| | - Y Tokura
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu
| | - T Matsui
- Department of Respiratory Medicine, Seirei Mikatahara General Hospital, Hamamatsu
| | - K Yokomura
- Department of Respiratory Medicine, Seirei Mikatahara General Hospital, Hamamatsu
| | - M Shirai
- Department of Health Science, Second Division, Department of Internal Medicine
| | - H Hayakawa
- Second Division, Department of Internal Medicine, Second Division, Department of Internal Medicine
| | - T Suda
- Second Division, Department of Internal Medicine
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Tsujimura K, Shirakawa H, Tokumoto T, Endou M, Wakai S, Ishida H, Tanabe K. Utility of the Japanese Glomerular Filtration Rate Equation in Estimating Glomerular Filtration Rate of Donor Kidney. Transplant Proc 2016; 48:734-7. [PMID: 27234724 DOI: 10.1016/j.transproceed.2015.12.118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 12/30/2015] [Indexed: 11/18/2022]
Abstract
BACKGROUND An equation for the estimated glomerular filtration rate (eGFR) is generally used for evaluating renal function in Japan. OBJECTIVE To assess the accuracy of the preoperative eGFR for estimating kidney donors' measured glomerular filtration rate (mGFR). METHODS Between April 2009 and August 2014, 91 Japanese living kidney donors were included in this study. The eGFR was calculated as follows: eGFR = 194 × serum creatinine(-1.094) × Age(-0.287) (and × 0.739 for women), and the mGFR was evaluated using inulin clearance. The preoperative eGFR was then compared with the mGFR. RESULTS Patients included 27 men and 64 women with a mean age of 56.8 ± 9.5 years (range, 36-79 years), mean body surface area of 1.56 ± 0.14 m(2) (range 1.27-1.92 m(2)), mean body mass index of 22.3 ± 2.3 kg/m(2) (range 14.0-27.0 kg/m(2)), and mean serum creatinine level of 0.66 ± 0.14 mg/dL (range 0.39-0.97 mg/dL). The mean eGFR was 81.3 ± 14.2 mL/min/1.73 m(2) (range 45.5-125.9 mL/min/1.73 m(2)), and the mean mGFR was 89.0 ± 15.5 mL/min/1.73 m(2) (range 45.4-130.7 mL/min/1.73 m(2)). The eGFR was significantly lower than the mGFR (P < .001). The correlation coefficient for the relationship between the eGFR and mGFR values was 0.503, and the mean difference between the 2 values was -7.8 (8.7%). CONCLUSIONS Although the eGFR correlated with the mGFR, the eGFR values did not accurately estimate the mGFR in living kidney donors. Therefore, it is necessary to evaluate the mGFR, especially in marginal kidney donors.
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Affiliation(s)
- K Tsujimura
- Department of Surgery, Tomishiro Central Hospital, Okinawa, Japan.
| | - H Shirakawa
- Department of Transplant Surgery, Okubo Hospital Tokyo, Japan
| | - T Tokumoto
- Department of Transplant Surgery, Shonan Kamakura General Hospital Kanagawa, Japan
| | - M Endou
- Department of Nephrology, Okubo Hospital, Tokyo, Japan
| | - S Wakai
- Department of Nephrology, Okubo Hospital, Tokyo, Japan
| | - H Ishida
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - K Tanabe
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
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Tsujimura K, Yamamoto A, Miyazawa M, Harada T, Bannai H, Nemoto M, Yamanaka T, Ozawa M, Kato K, Kondo T. Application of ORF68-based grouping to an epidemiological survey of epidemic abortions caused by equine herpesvirus type 1. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.02.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Nemoto M, Bannai H, Tsujimura K, Yamanaka T, Kondo T. Genetic and antigenic analysis of Getah virus isolated in 1978 and 2014 in Japan. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.02.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Bannai H, Nemoto M, Tsujimura K, Yamanaka T, Kondo T. Protective effect of intranasal vaccination of horses with a modified live equine herpesvirus type 1 vaccine. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.02.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Yamanaka T, Cullinane A, Gildea S, Bannai H, Nemoto M, Tsujimura K, Kondo T, Matsumura T. The potential impact of a single amino-acid substitution on the efficacy of equine influenza vaccines. Equine Vet J 2014; 47:456-62. [DOI: 10.1111/evj.12290] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 04/09/2014] [Indexed: 11/29/2022]
Affiliation(s)
- T. Yamanaka
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
| | - A. Cullinane
- Virology Unit; Irish Equine Centre; Johnstown Naas Co.; Kildare Ireland
| | - S. Gildea
- Virology Unit; Irish Equine Centre; Johnstown Naas Co.; Kildare Ireland
| | - H. Bannai
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
| | - M. Nemoto
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
| | - K. Tsujimura
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
| | - T. Kondo
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
| | - T. Matsumura
- Epizootic Research Center; Equine Research Institute; Japan Racing Association; Shimotsuke Japan
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Kageyama Y, Torikai E, Tsujimura K, Kobayashi M. Involvement of IL-33 in the pathogenesis of rheumatoid arthritis: the effect of etanercept on the serum levels of IL-33. Mod Rheumatol 2014. [DOI: 10.3109/s10165-011-0480-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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10
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Seto S, Tsujimura K, Horii T, Koide Y. Autophagy adaptor protein p62/SQSTM1 and autophagy-related gene Atg5 mediate autophagosome formation in response to Mycobacterium tuberculosis infection in dendritic cells. PLoS One 2013; 8:e86017. [PMID: 24376899 PMCID: PMC3871604 DOI: 10.1371/journal.pone.0086017] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Accepted: 12/04/2013] [Indexed: 02/05/2023] Open
Abstract
Mycobacterium tuberculosis is an intracellular pathogen that can survive within phagocytic cells by inhibiting phagolysosome biogenesis. However, host cells can control the intracellular M. tuberculosis burden by the induction of autophagy. The mechanism of autophagosome formation to M. tuberculosis has been well studied in macrophages, but remains unclear in dendritic cells. We therefore characterized autophagosome formation in response to M. tuberculosis infection in dendritic cells. Autophagy marker protein LC3, autophagy adaptor protein p62/SQSTM1 (p62) and ubiquitin co-localized to M. tuberculosis in dendritic cells. Mycobacterial autophagosomes fused with lysosomes during infection, and major histcompatibility complex class II molecules (MHC II) also localized to mycobacterial autophagosomes. The proteins p62 and Atg5 function in the initiation and progression of autophagosome formation to M. tuberculosis, respectively; p62 mediates ubiquitination of M. tuberculosis and Atg5 is involved in the trafficking of degradative vesicles and MHC II to mycobacterial autophagosomes. These results imply that the autophagosome formation to M. tuberculosis in dendritic cells promotes the antigen presentation of mycobacterial peptides to CD4+ T lymphocytes via MHC II.
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Affiliation(s)
- Shintaro Seto
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
- * E-mail:
| | - Kunio Tsujimura
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Toshinobu Horii
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Yukio Koide
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
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Seto S, Sugaya K, Tsujimura K, Nagata T, Horii T, Koide Y. Rab39a interacts with phosphatidylinositol 3-kinase and negatively regulates autophagy induced by lipopolysaccharide stimulation in macrophages. PLoS One 2013; 8:e83324. [PMID: 24349490 PMCID: PMC3862771 DOI: 10.1371/journal.pone.0083324] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 11/01/2013] [Indexed: 11/25/2022] Open
Abstract
Rab39a has pleiotropic functions in phagosome maturation, inflammatory activation and neuritogenesis. Here, we characterized Rab39a function in membrane trafficking of phagocytosis and autophagy induction in macrophages. Rab39a localized to the periphery of LAMP2-positive vesicles and showed the similar kinetics on the phagosome to that of LAMP1. The depletion of Rab39a did not influence the localization of LAMP2 to the phagosome, but it augments the autophagosome formation and LC3 processing by lipopolysaccharide (LPS) stimulation. The augmentation of autophagosome formation in Rab39a-knockdown macrophages was suppressed by Atg5 depletion or an inhibitor for phosphatidylinostol 3-kinase (PI3K). Immunoprecipitation analysis revealed that Rab39a interacts with PI3K and that the amino acid residues from 34(th) to 41(st) in Rab39a were indispensable for this interaction. These results suggest that Rab39a negatively regulates the LPS-induced autophagy in macrophages.
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Affiliation(s)
- Shintaro Seto
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Keiko Sugaya
- Department of Health Science, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Kunio Tsujimura
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Toshi Nagata
- Department of Health Science, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Toshinobu Horii
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Yukio Koide
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
- Executive Director, Hamamatsu University School of Medicine, Hamamatsu Hamamatsu, Shizuoka, Japan
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Osada-Oka M, Tateishi Y, Hirayama Y, Ozeki Y, Niki M, Kitada S, Maekura R, Tsujimura K, Koide Y, Ohara N, Yamamoto T, Kobayashi K, Matsumoto S. Antigen 85A and mycobacterial DNA-binding protein 1 are targets of immunoglobulin G in individuals with past tuberculosis. Microbiol Immunol 2013; 57:30-7. [PMID: 23157580 DOI: 10.1111/j.1348-0421.2012.12005.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 10/19/2012] [Accepted: 11/02/2012] [Indexed: 12/01/2022]
Abstract
Development of accurate methods for predicting progression of tuberculosis (TB) from the latent state is recognized as vitally important in controlling TB, because a majority of cases develop from latent infections. Past TB that has never been treated has a higher risk of progressing than does latent Mycobacterium tuberculosis infection in patients who have previously received treatment. Antibody responses against 23 kinds of M. tuberculosis proteins in individuals with past TB who had not been medicated were evaluated. These individuals had significantly higher concentrations of antibodies against Antigen 85A and mycobacterial DNA-binding protein 1 (MDP1) than did those with active TB and uninfected controls. In addition, immunohistochemistry revealed colocalization of tubercle bacilli, antigen 85 and MDP1 inside tuberculous granuloma lesions in an asymptomatic subject, showing that M. tuberculosis in lesions expresses both antigen 85 and MDP1. Our study suggests the potential usefulness of measuring antibody responses to antigen 85A and MDP1 for assessing the risk of TB progression.
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Affiliation(s)
- Mayuko Osada-Oka
- Department of Bacteriology, Osaka City University Graduate School of Medicine, 1-4-3 Abeno-ku, Osaka 545-8585, Japan
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Hozumi H, Tsujimura K, Yamamura Y, Seto S, Uchijima M, Nagata T, Miwa S, Hayakawa H, Fujisawa T, Hashimoto D, Inui N, Suda T, Chida K, Koide Y. Immunogenicity of dormancy-related antigens in individuals infected with Mycobacterium tuberculosis in Japan. Int J Tuberc Lung Dis 2013; 17:818-24. [DOI: 10.5588/ijtld.12.0695] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- H. Hozumi
- Department of Infectious Diseases, and Internal Medicine 2 (Divisions of Endocrinology & Metabolism, Respiratology & Hepatology), Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - K. Tsujimura
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Y. Yamamura
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Japan; Department of Neurosurgery, Yaizu City Hospital, Yaizu, Japan
| | - S. Seto
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - M. Uchijima
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - T. Nagata
- Department of Health Science, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - S. Miwa
- Department of Respiratory Medicine, Tenryu Hospital, Hamamatsu, Japan
| | - H. Hayakawa
- Department of Respiratory Medicine, Tenryu Hospital, Hamamatsu, Japan
| | - T. Fujisawa
- Internal Medicine 2 (Divisions of Endocrinology & Metabolism, Respiratology & Hepatology), Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - D. Hashimoto
- Internal Medicine 2 (Divisions of Endocrinology & Metabolism, Respiratology & Hepatology), Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - N. Inui
- Internal Medicine 2 (Divisions of Endocrinology & Metabolism, Respiratology & Hepatology), Hamamatsu University School of Medicine, Hamamatsu, Japan; Department of Clinical Pharmacology and Therapeutics, Hamamatsu University School of
Medicine, Hamamatsu, Japan
| | - T. Suda
- Internal Medicine 2 (Divisions of Endocrinology & Metabolism, Respiratology & Hepatology), Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - K. Chida
- Internal Medicine 2 (Divisions of Endocrinology & Metabolism, Respiratology & Hepatology), Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Y. Koide
- Department of Infectious Diseases, Hamamatsu University School of Medicine, Hamamatsu, Japan
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14
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Taguchi O, Tsujimura K, Kontani K, Harada Y, Nomura S, Ikeda H, Morita A, Sugiura H, Hayashi N, Yatabe Y, Seto M, Tatematsu M, Takahashi T, Fukushima A. Behavior of bone marrow-derived cells following in vivo transplantation: differentiation into stromal cells with roles in organ maintenance. Am J Pathol 2013; 182:1255-62. [PMID: 23416163 DOI: 10.1016/j.ajpath.2012.12.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 11/19/2012] [Accepted: 12/24/2012] [Indexed: 11/16/2022]
Abstract
After injection of green fluorescent protein-positive (GFP(+)) bone marrow (BM) cells into lethally irradiated wild-type mice, the organs of the recipient mice [BM transplantation (BMT) mice] were regenerated; however, irradiation of the cecum or spleen (only) blocked their regeneration with loss of injected BM cells. These results suggest that the donor cells first enter the BM and then migrate to the peripheral organs. The maintenance of epithelial structure and function is controlled by interactions between stromal cells and the epithelia; the organ is stable only if the stroma is functioning normally. In BMT mice, intestinal GFP(+) stromal cells were regenerated fairly rapidly although GFP(+) cells were observed only rarely in the intestinal epithelium even if it passes several weeks or months post BMT, indicating that BM-derived stromal cells play a pivotal role in epithelial renewal and are crucial for maintaining organ structure and function. BM-derived cells in the periphery possess a special key to return to the BM and then to migrate to various organs to become resident cells.
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Affiliation(s)
- Osamu Taguchi
- Aichi Cancer Center Research Institute, Chikusa-ku, Nagoya, Japan.
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15
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Bannai H, Nemoto M, Tsujimura K, Yamanaka T, Kondo T, Matsumura T. Development of a novel virus-neutralizing test of equine herpesvirus type-1 by a plaque-reduction method using 96-well plates. J Equine Vet Sci 2012. [DOI: 10.1016/j.jevs.2012.08.124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Okanami Y, Tsujimura K, Mizuno S, Tabata M, Isaji S, Akatsuka Y, Kuzushima K, Takahashi T, Uemoto S. Intracellular Interferon-γ Staining Analysis of Donor-Specific T-Cell Responses in Liver Transplant Recipients. Transplant Proc 2012; 44:548-54. [DOI: 10.1016/j.transproceed.2011.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kono M, Nakamura Y, Suda T, Uchijima M, Tsujimura K, Nagata T, Giermasz AS, Kalinski P, Nakamura H, Chida K. Enhancement of protective immunity against intracellular bacteria using type-1 polarized dendritic cell (DC) vaccine. Vaccine 2012; 30:2633-9. [PMID: 22365841 DOI: 10.1016/j.vaccine.2012.02.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 02/08/2012] [Accepted: 02/10/2012] [Indexed: 11/30/2022]
Abstract
The development of effective vaccine strategies for intracellular bacteria, including tuberculosis, is one of the major frontiers of medical research. Our previous studies showed that dendritic cell (DC) vaccine is a promising approach for eliciting protective immunity against intracellular bacteria. However, it has been reported that standard fully mature DCs show reduced ability to produce IL-12p70 upon subsequent interaction with antigen (Ag)-specific T cells, limiting their in vivo performance for vaccines. Recently, we found that such "DC exhaustion" could be prevented by the presence of IL-4 and IFN-γ during the maturation of mouse DCs (type-1 polarization), resulting in improved induction of anti-tumor immunity in cancer. Here we show that such type-1 polarized DCs promote dramatic enhancement of protective immunity against an intracellular bacterium, Listeria monocytogenes. Murine bone marrow-derived DCs were cultured and matured with LPS, IL-4 and IFN-γ (type-1 polarized DCs), and with LPS alone (non-polarized DCs). DCs were loaded with listeriolysin O (LLO) 91-99, H2-K(d)-restricted epitope of L. monocytogenes, and were injected into naïve BALB/c mice intravenously. Type-1 polarized DCs produced significantly higher levels of IL-12p70 than non-polarized DCs in vitro, and this vaccine strongly enhanced LLO 91-99-specific CD8(+) T cells exhibiting epitope-specific cytotoxic activity and IFN-γ production, leading to significant induction of protective immunity against L. monocytogenes. Type-1 polarized DCs are potential candidates for enhancing protective immunity in the design of effective vaccination strategies against intracellular bacteria.
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Affiliation(s)
- Masato Kono
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Seto S, Tsujimura K, Koide Y. Coronin-1a inhibits autophagosome formation around Mycobacterium tuberculosis-containing phagosomes and assists mycobacterial survival in macrophages. Cell Microbiol 2012; 14:710-27. [PMID: 22256790 DOI: 10.1111/j.1462-5822.2012.01754.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Mycobacterium tuberculosis is an intracellular bacterium that can survive within macrophages. Such survival is potentially associated with Coronin-1a (Coro1a). We investigated the mechanism by which Coro1a promotes the survival of M. tuberculosis in macrophages and found that autophagy was involved in the inhibition of mycobacterial survival in Coro1a knock-down (KD) macrophages. Fluorescence microscopy and immunoblot analyses revealed that LC3, a representative autophagic protein, was recruited to M. tuberculosis-containing phagosomes in Coro1a KD macrophages. Thin-section electron microscopy demonstrated that bacilli were surrounded by the multiple membrane structures in Coro1a KD macrophages. The proportion of LC3-positive mycobacterial phagosomes colocalized with p62/SQSTM1, ubiquitin or LAMP1 increased in Coro1a KD macrophages during infection. These results demonstrate the formation of autophagosomes around M. tuberculosis in Coro1a KD macrophages. Phosphorylation of p38 mitogen-activated protein kinase (MAPK) was induced in response to M. tuberculosis infection in Coro1a KD macrophages, suggesting that Coro1a blocks the activation of the p38 MAPK pathway involved in autophagosome formation. LC3 recruitment to M. tuberculosis-containing phagosomes was also observed in Coro1a KD alveolar or bone marrow-derived macrophages. These results suggest that Coro1a inhibits autophagosome formation in alveolar macrophages, thereby facilitating M. tuberculosis survival within the lung.
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Affiliation(s)
- Shintaro Seto
- Department of Infectious Diseases, Hamamatsu University School of Medicine, 1-20-1 Handa-yama, Higashi-ku, Hamamatsu 431-3192, Japan.
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Seto S, Tsujimura K, Koide Y. [Mechanism of intracellular parasitism by Mycobacterium tuberculosis]. Nihon Rinsho 2011; 69:1373-1377. [PMID: 21838032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Mycobacterium tuberculosis is an intracellular bacterium that can replicate within infected macrophages. The intracellular parasitism by M. tuberculosis results from arresting phagosome maturation and inhibiting phagolysosome biogenesis in infected macrophages. It has been thought that M. tuberculosis arrests the maturation of its phagosome at the early stage. Several reports attended to the localization of Rab GTPases on mycobacterial phagosomes. Rab GTPases regulate membrane trafficking, but details of how Rab GTPases regulate phagosome maturation and how M. tuberculosis modulates their activities during inhibiting phagolysosome biogenesis remains elusive. Here, we introduce the new findings that M. tuberculosis alters the localization of Rab GTPases regulating phagosome maturation during inhibiting phagolysosome biogenesis.
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Affiliation(s)
- Shintaro Seto
- Department of Infectious Diseases, Hamamatsu University School of Medicine
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Sugaya K, Seto S, Tsujimura K, Koide Y. Mobility of late endosomal and lysosomal markers on phagosomes analyzed by fluorescence recovery after photobleaching. Biochem Biophys Res Commun 2011; 410:371-5. [PMID: 21683685 DOI: 10.1016/j.bbrc.2011.06.023] [Citation(s) in RCA: 7] [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] [Received: 05/30/2011] [Accepted: 06/01/2011] [Indexed: 10/18/2022]
Abstract
During phagosome maturation, the late endosomal marker Rab7 and the lysosomal marker LAMP1 localize to the phagosomes. We investigated the mobility of Rab7 and LAMP1 on the phagosomes in macrophages by fluorescence recovery after photobleaching (FRAP) analysis. Rab7 was mobile between the phagosomal membrane and the cytosol in macrophages that ingested latex beads during phagosome maturation. The addition of interferon-γ (IFN-γ) restricted this mobility, suggesting that Rab7 is forced to bind to the phagosomal membrane by IFN-γ-mediated activation. Immobilization of LAMP1 on the phagosomes was observed irrespective of IFN-γ-activation. We further examined the mobility of Rab7 on the phagosomes containing Mycobacterium bovis BCG by FRAP analysis. The rate of fluorescence recovery for Rab7 on mycobacterial phagosomes was lower than that on the phagosomes containing latex beads, suggesting that mycobacteria impaired the mobility of Rab7 and arrested phagosome maturation.
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Affiliation(s)
- Keiko Sugaya
- Department of Health Science, Hamamatsu University School of Medicine, 1-20-1 Handa-yama, Higashi-ku, Hamamatsu 431-3192, Japan
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Kageyama Y, Torikai E, Tsujimura K, Kobayashi M. Involvement of IL-33 in the pathogenesis of rheumatoid arthritis: the effect of etanercept on the serum levels of IL-33. Mod Rheumatol 2011; 22:89-93. [PMID: 21674220 DOI: 10.1007/s10165-011-0480-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Accepted: 05/24/2011] [Indexed: 10/18/2022]
Abstract
To investigate the role of interleukin (IL)-33 in rheumatoid arthritis (RA) patients, we measured the serum levels of IL-33 in RA patients before and after the administration of etanercept. Twenty-four patients with RA were treated with etanercept. Clinical and laboratory examinations, including serum levels of C-reactive protein (CRP) and hemoglobin (Hb); white blood cell (WBC) and red blood cell (RBC) counts; and the Disease Activity Score of 28 joints including CRP (DAS28-CRP), were performed at the baseline and at 3 and 6 months after the initial treatment with etanercept. The mean serum IL-33 levels had decreased significantly at 3 and 6 months after the initial treatment with etanercept. Serum IL-33 levels showed a significant correlation with the number of tender joints, CRP, DAS28-CRP, and the WBC count, and an inverse correlation with the RBC count and Hb level. These findings indicated that the decrease of serum IL-33 levels was a novel function of etanercept, shown for the first time in this study. Measurement of serum levels of IL-33 may become a useful control marker for RA treatment.
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Affiliation(s)
- Yasunori Kageyama
- Faculty of Health Sciences, Hamamatsu University, 1230 Miyakoda-cho, Kita-ku, Hamamatsu, Shizuoka 431-2102, Japan.
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Uto T, Tsujimura K, Uchijima M, Seto S, Nagata T, Suda T, Chida K, Nakamura H, Koide Y. A novel vaccine strategy to induce mycobacterial antigen-specific Th1 responses by utilizing the C-terminal domain of heat shock protein 70. ACTA ACUST UNITED AC 2011; 61:189-96. [DOI: 10.1111/j.1574-695x.2010.00762.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Mycobacterium tuberculosis (M. tb) is an intracellular pathogen that can replicate within infected macrophages. The ability of M. tb to arrest phagosome maturation is believed to facilitate its intracellular multiplication. Rab GTPases regulate membrane trafficking, but details of how Rab GTPases regulate phagosome maturation and how M. tb modulates their localization during inhibiting phagolysosome biogenesis remain elusive. We compared the localization of 42 distinct Rab GTPases to phagosomes containing either Staphylococcus aureus or M. tb. The phagosomes containing S. aureus were associated with 22 Rab GTPases, but only 5 of these showed similar localization kinetics as the phagosomes containing M. tb. The Rab GTPases responsible for phagosome maturation, phagosomal acidification and recruitment of cathepsin D were examined in macrophages expressing the dominant-negative form of each Rab GTPase. LysoTracker staining and immunofluorescence microscopy revealed that Rab7, Rab20 and Rab39 regulated phagosomal acidification and Rab7, Rab20, Rab22b, Rab32, Rab34, Rab38 and Rab43 controlled the recruitment of cathepsin D to the phagosome. These results suggest that phagosome maturation is achieved by a series of interactions between Rab GTPases and phagosomes and that differential recruitment of these Rab GTPases, except for Rab22b and Rab43, to M. tb-containing phagosomes is involved in arresting phagosome maturation and inhibiting phagolysosome biogenesis.
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Affiliation(s)
- Shintaro Seto
- Department of Infectious Diseases, 1-20-1 Handa-yama, Hamamatsu 431-3192, Japan
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Tsujimura K, Koide Y. [T cell-mediated immune responses and the recognition of tuberculosis antigens]. Kekkaku 2010; 85:509-514. [PMID: 20662246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
T cell-mediated immune responses profoundly contribute to the protection against the re-activation of latently infected Mycobacterium tuberculosis. Th1 cells produce IFN-gamma to activate infected macrophages and promote the formation of granulomas around infected macrophages. CD8+, gamma delta and CD1-restricted T cells also produce IFN-gamma and participate the protective responses against bacterial growth. Th17 cells produce IL-17 to promote the mobilization of immunocompetent cells and contribute to the granuloma formation. On the contrary, Th2 cells and Tregs interfere these protective immune responses.
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Affiliation(s)
- Kunio Tsujimura
- Department of Infectious Diseases, Hamamatsu University School of Medicine, 1-20-1, Handa-yama, Higashi-ku, Hamamatsu-shi, Shizuoka 431-3192, Japan
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Wang LX, Nagata T, Tsujimura K, Uchijima M, Seto S, Koide Y. Identification of HLA-DR4-restricted T-cell epitope on MPT51 protein, a major secreted protein derived from Mycobacterium tuberculosis using MPT51 overlapping peptides screening and DNA vaccination. Vaccine 2010; 28:2026-31. [PMID: 20188259 DOI: 10.1016/j.vaccine.2009.10.063] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We identified a novel HLA-DR4-restricted CD4+ T-cell epitope on a secreted antigen of Mycobacterium tuberculosis, MPT51, in 004149-MM HLA-DR4-transgenic mice which express HLA-DRB1*0401, but not murine MHC class II molecules. The mice were immunized with plasmid DNA encoding MPT51 using gene gun and interferon (IFN)-gamma production from the immune splenocytes was analyzed. In response to overlapping synthetic peptides covering the mature MPT51 sequence, only one peptide, p191-210, stimulated the splenocytes to produce IFN-gamma. Further analysis using flow cytometry and computer-assisted algorithm, ProPred, narrowed down the region of CD4+ T-cell epitope to p191-202. The CD4+ T-cell epitope would be feasible for vaccine design against tuberculosis as well as for analysis of MPT51-specific T-cells in M. tuberculosis infection.
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Affiliation(s)
- Li-Xin Wang
- Department of Infectious Diseases, Hamamatsu University School of Medicine, 1-20-1 Higashi-ku, Handa-yama, Hamamatsu 431-3192, Japan
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Eweda G, Suzuki D, Nagata T, Tsujimura K, Koide Y. Identification of murine T-cell epitopes on low-molecular-mass secretory proteins (CFP11, CFP17, and TB18.5) of Mycobacterium tuberculosis. Vaccine 2010; 28:4616-25. [PMID: 20457290 DOI: 10.1016/j.vaccine.2010.04.079] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2009] [Revised: 04/23/2010] [Accepted: 04/26/2010] [Indexed: 10/19/2022]
Abstract
The low-molecular-mass secretory proteins of Mycobacterium tuberculosis have been shown to be major T-cell antigens during infection with the pathogenic bacterium. In this study, we determined murine T-cell epitopes on three low-molecular-mass proteins, CFP11 (Rv2433c), CFP17 (Rv1827), and TB18.5 (Rv0164) using DNA immunization of inbred mice. We analyzed interferon-gamma production from immune splenocytes in response to overlapping peptides covering these proteins. We identified two CD8+ T-cell epitopes on CFP11 and CFP17, one in BALB/c mice and the other in C57BL/6 mice, respectively. On TB18.5, we identified a CD8+ T-cell epitope in BALB/c mice and a CD4+ T-cell epitope in C57BL/6 mice. With the aid of computer algorithms, we could identify the minimal CD8+ T-cell epitopes. These T-cell epitopes are feasible for analysis of the role of antigen-specific T cells during M. tuberculosis infection.
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Affiliation(s)
- Ghada Eweda
- Department of Infectious Diseases, Hamamatsu University School of Medicine, 1-20-1 Higashi-ku, Handa-yama, Hamamatsu 431-3192, Japan
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Seto S, Matsumoto S, Tsujimura K, Koide Y. Differential recruitment of CD63 and Rab7-interacting-lysosomal-protein to phagosomes containing Mycobacterium tuberculosis in macrophages. Microbiol Immunol 2010; 54:170-4. [PMID: 20236428 DOI: 10.1111/j.1348-0421.2010.00199.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
M.tb is an intracellular pathogen which survives within the phagosomes of host macrophages by inhibiting their fusion with lysosomes. Here, it has been demonstrated that a lysosomal glycoprotein, CD63, is recruited to the majority of M.tb phagosomes, while RILP shows limited localization. This is consistent with the author's findings that CD63, but not RILP, is recruited to the phagosomes in macrophages expressing the dominant negative form of Rab7. These results suggest that M.tb phagosomes selectively fuse with endosomes and lysosomes to escape killing activity while acquiring nutrients.
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Affiliation(s)
- Shintaro Seto
- Department of Infectious Diseases, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, 431-3192, Japan
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Mitsui S, Torii K, Fukui H, Tsujimura K, Maeda A, Nose M, Nagatsu A, Mizukami H, Morita A. The herbal medicine compound falcarindiol from Notopterygii Rhizoma suppresses dendritic cell maturation. J Pharmacol Exp Ther 2010; 333:954-60. [PMID: 20215408 DOI: 10.1124/jpet.109.162305] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Dendritic cells (DCs) are important for regulating the immune response. We report an herbal medicine compound called falcarindiol that affects DC function. Ethanol extracts of 99 crude drugs that are the main components of 210 traditional Japanese medicines (Kampo medicine) approved by the Ministry of Health, Labor and Welfare in Japan were prepared and screened using the murine epidermal-derived Langerhans cell line XS106. Notopterygii Rhizoma strongly suppressed major histocompatibility complex (MHC) class II expression in XS106 cells. Activity-guided fractionation led to the isolation and identification of falcarindiol as a principal active compound in Notopterygii Rhizoma. Falcarindiol (1-5 microM) dose-dependently suppressed MHC II expression in XS106 cells. Fresh-isolated bone marrow-derived DCs were examined for the production of MHC II, CD80, CD86, interleukin (IL)-12p70, and IL-10. Treatment of bone marrow-derived DCs with 5 muM falcarindiol significantly inhibited lipopolysaccharide-induced phenotype activation and cytokine secretion and inhibited MHC II expression by CD40 ligation, but not phorbol 12-myristate 13-acetate + ionomycin or IL-12. Falcarindiol inhibited DC maturation by blocking the canonical pathway of nuclear factor-kappaB and phosphorylated p38. Topical application of 0.002 and 0.01% falcarindiol before sensitization dose-dependently suppressed delayed-type hypersensitivity to ovalbumin (p < 0.01). Falcarindiol induces immunosuppressive effects in vitro and in vivo and might be a novel therapy for autoimmune or allergic diseases.
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Affiliation(s)
- Seika Mitsui
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Mizuho-ku, Nagoya, Japan
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Suzuki D, Nagata T, Eweda G, Matsumoto S, Matsumoto M, Tsujimura K, Koide Y. Characterization of murine T-cell epitopes on mycobacterial DNA-binding protein 1 (MDP1) using DNA vaccination. Vaccine 2010; 28:2020-5. [DOI: 10.1016/j.vaccine.2009.10.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Seto S, Matsumoto S, Tsujimura K, Koide Y. Differential recruitment of CD63 and Rab7-interacting-lysosomal-protein to phagosomes containing Mycobacterium tuberculosis in macrophages. Microbiol Immunol 2009. [DOI: 10.1111/j.1348-0421.2009.00199.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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31
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Enomoto M, Goto H, Tomono Y, Kasahara K, Tsujimura K, Kiyono T, Inagaki M. Novel positive feedback loop between Cdk1 and Chk1 in the nucleus during G2/M transition. J Biol Chem 2009; 284:34223-30. [PMID: 19837665 DOI: 10.1074/jbc.c109.051540] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Chk1, one of the critical transducers in DNA damage/replication checkpoints, prevents entry into mitosis through inhibition of Cdk1 activity. However, it has remained unclear how this inhibition is cancelled at the G(2)/M transition. We reported recently that Chk1 is phosphorylated at Ser(286) and Ser(301) by Cdk1 during mitosis. Here, we show that mitotic Chk1 phosphorylation is accompanied by Chk1 translocation from the nucleus to the cytoplasm in prophase. This translocation advanced in accordance with prophase progression and was regulated by Crm-1-dependent nuclear export. Exogenous Chk1 mutated at Ser(286) and Ser(301) to Ala (S286A/S301A) was observed mainly in the nuclei of prophase cells, although such nuclear accumulation was hardly observed in wild-type Chk1. Induction of S286A/S301A resulted in the delay of mitotic entry. Biochemical analyses using immunoprecipitated cyclin B(1)-Cdk1 complexes revealed S286A/S301A expression to block the adequate activation of Cdk1. In support of this, S286A/S301A expression retained Wee1 at higher levels and Cdk1-induced phosphorylation of cyclin B(1) and vimentin at lower levels. A kinase-dead version of S286A/S301A also localized predominantly in the nucleus but lost the ability to delay mitotic entry. These results indicate that Chk1 phosphorylation by Cdk1 participates in cytoplasmic sequestration of Chk1 activity, which releases Cdk1 inhibition in the nucleus and promotes mitotic entry.
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Affiliation(s)
- Masato Enomoto
- Division of Biochemistry, Aichi Cancer Center Research Institute, Nagoya, Aichi 464-8681, Japan
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Seto S, Matsumoto S, Ohta I, Tsujimura K, Koide Y. Dissection of Rab7 localization on Mycobacterium tuberculosis phagosome. Biochem Biophys Res Commun 2009; 387:272-7. [DOI: 10.1016/j.bbrc.2009.06.152] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Accepted: 06/30/2009] [Indexed: 10/20/2022]
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Namangala B, Yokoyama N, Ikehara Y, Taguchi O, Tsujimura K, Sugimoto C, Inoue N. Effect of CD4+CD25+ T cell-depletion on acute lethal infection of mice with Trypanosoma congolense. J Vet Med Sci 2008; 70:751-9. [PMID: 18772548 DOI: 10.1292/jvms.70.751] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Despite the immense socio-economic repercussions of African trypanosomosis (AT), there is currently no effective control measure against the disease. Characterization of mechanisms governing resistance and/or susceptibility to AT could suggest interventions that might lead to more effective disease control. The present study was designed in an attempt to address the possible role of CD4+CD25+ T cells during an acute lethal infection of mice with Trypanosoma congolense, the causative agent of AT in domestic animals, through selective depletion using anti-CD25 monoclonal antibody. Accordingly, CD4+CD25+ T-cell-depletion resulted in a significant reduction or delay in parasitemia, pathology, and mortality, as compared to controls. The apparent resistance in CD4+CD25+-T-cell-depleted mice correlated with a profound suppression of Th2 cytokines in vitro and in vivo, culminating in a net Th1 cytokine environment. Cumulatively, these findings suggest that CD4+CD25+ T-cell- depletion improves the trypanotolerance of highly susceptible BALB/c mice acutely infected with the lethal T. congolense.
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Affiliation(s)
- Boniface Namangala
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
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Demachi-Okamura A, Ito Y, Akatsuka Y, Tsujimura K, Morishima Y, Takahashi T, Kuzushima K. Epstein-Barr virus nuclear antigen 1-specific CD4+ T cells directly kill Epstein-Barr virus-carrying natural killer and T cells. Cancer Sci 2008; 99:1633-42. [PMID: 18754877 DOI: 10.1111/j.1349-7006.2008.00852.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Epstein-Barr virus (EBV) nuclear antigen (EBNA)1 is expressed in every EBV-infected cell, regardless of the state of EBV infection. Although EBNA1 is thought to be a promising antigen for immunotherapy of all EBV-associated malignancies, it is less clear whether EBNA1-specific CD4(+) T cells can act as direct effectors. Herein, we investigated the ability of CD4(+) T-cell clones induced with overlapping peptides covering the C-terminal region of EBNA1, and identified minimal epitopes and their restricted major histocompatibility complex class II molecules. Of these, a novel epitope, EYHQEGGPD, was found to be presented by DRB1*0401, 0403 and 0406. Five CD4(+) T-cell clones recognized endogenously processed and presented antigens on EBV-transformed lymphoblastoid cell lines (LCL) and one example proved capable of killing EBV-carrying natural killer (NK) and T-cell lines derived from patients with chronic active EBV infection (CAEBV). Identification of minimal epitopes facilitates design of peptide-based vaccines and our data suggest that EBNA1-specific CD4(+) T cells may play roles as direct effectors for immunotherapy targeting EBV-carrying NK and T-cell malignancies.
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Shimato S, Natsume A, Wakabayashi T, Tsujimura K, Nakahara N, Ishii J, Ito M, Akatsuka Y, Kuzushima K, Yoshida J. Identification of a human leukocyte antigen-A24-restricted T-cell epitope derived from interleukin-13 receptor alpha2 chain, a glioma-associated antigen. J Neurosurg 2008; 109:117-22. [PMID: 18590440 DOI: 10.3171/jns/2008/109/7/0117] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT The human leukocyte antigen-A24 (HLA-A24) allele is highly expressed in Asians. This allele is expressed in 60% of the Japanese population and in a significant number of people of other ethnicities. The interleukin-13 type alpha2 receptor (IL-13Ralpha2) has been shown to be a glioma-specific antigen, and is abundantly expressed in a majority of high-grade astrocytomas. In this study, the authors first investigated the suitability of IL-13Ralpha2 as a target antigen of malignant glioma cells, and then identified a potential HLA-A24-restricted peptide derived from IL-13Ralpha2. METHODS The expression of IL-13Ralpha2 in glioma tissues was examined by reverse transcription-polymerase chain reaction analysis. To identify the desired epitope, the authors selected 5 candidate peptides from IL-13Ralpha2 that were predicted to bind to HLA-A24. The lytic activity of cytotoxic T lymphocytes (CTLs) induced by peptide-pulsed dendritic cells was analyzed against various glioma cell lines and freshly isolated human glioma cells. RESULTS In a series of glioma tissues obtained in 29 patients, the authors found that > 50% of high-grade gliomas expressed IL-13Ralpha2. Of the 5 peptides tested, P174 (WYEGLDHAL) was found to be the most useful for the induction of HLA-A24-restricted and IL-13Ralpha2-specific CTLs. A CTL line induced by P174 also showed antigen-specific cytotoxicity to surgically removed glioma cells depending on their level of expression of IL-13Ralpha2 and HLA-A24. CONCLUSIONS Interleukin-13Ralpha2 is a glioma-specific antigen, and the immunogenic peptide P174 may contribute to a peptide-based immunotherapy against malignant glioma cells expressing HLA-A24.
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Affiliation(s)
- Shinji Shimato
- Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan
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Kojima N, Biao L, Nakayama T, Ishii M, Ikehara Y, Tsujimura K. Oligomannose-coated liposomes as a therapeutic antigen-delivery and an adjuvant vehicle for induction of in vivo tumor immunity. J Control Release 2008; 129:26-32. [DOI: 10.1016/j.jconrel.2008.03.023] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2007] [Revised: 03/22/2008] [Accepted: 03/29/2008] [Indexed: 10/22/2022]
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Fukui H, Mitsui S, Harima N, Nose M, Tsujimura K, Mizukami H, Morita A. Novel functions of herbal medicines in dendritic cells: role of Amomi Semen in tumor immunity. Microbiol Immunol 2008; 51:1121-33. [PMID: 18037790 DOI: 10.1111/j.1348-0421.2007.tb03998.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Dendritic cells (DCs) have a major role in regulating immune responses, including tumor immunity and peripheral tolerance. In the present study, we identified novel functions of herbal medicines in DCs by screening 99 herbal medicines, most of which are among the 210 Chinese medicines approved by the Ministry of Health, Labour, and Welfare, Japan. Ethanol extracts were prepared, and a murine epidermal-derived Langerhans cell line, XS106, was used to screen the 99 extracts by analyzing major histocompatibility complex (MHC) class II expression. Amomi Semen (amomum seed), Polyporus (polyporus sclerotium), and Plantaginis Semen (plantago seed) potently activated XS106 and were selected for further analysis. The effects of these extracts on bone marrow-derived DCs (BM-DCs) generated in vitro were then analyzed using surface phenotype (MHC class II, CD80, and CD86) and interleukin (IL)-12p70 production as indicators. BM-DCs treated with Amomi Semen extract exhibited activated phenotypes and secreted IL-12p70. The activation level was similar to that induced by lipopolysaccharides. Finally, an E.G7-OVA tumor model (E.L4-OVA transfectant) was used to examine the anti-tumor effects of Amomi Semen extract. Vaccination of mice with a subcutaneous injection of BM-DCs treated with Amomi Semen extract and OVA peptide significantly inhibited the growth of tumor cells and prolonged survival time compared to controls. Furthermore, therapeutic effects were observed on established tumors. The inhibition rates for both the prophylactic and therapeutic protocols were comparable to those of lipopolysaccharides. These results indicate that Amomi Semen extract potently activate DCs and is potentially useful for DC vaccination.
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Affiliation(s)
- Hajime Fukui
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Isomura I, Shintani Y, Yasuda Y, Tsujimura K, Morita A. Induction of regulatory dendritic cells by topical application of NF-kappaB decoy oligodeoxynucleotides. Immunol Lett 2008; 119:49-56. [PMID: 18547648 DOI: 10.1016/j.imlet.2008.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2007] [Revised: 04/06/2008] [Accepted: 04/13/2008] [Indexed: 11/15/2022]
Abstract
Dendritic cells (DC) have a key role in inducing an immune response, but DC in different maturation states are responsible for inducing tolerance. Topical application of nuclear factor (NF)-kappaB decoy oligodeoxynucleotides (ODN) induces antigen-specific peripheral tolerance in delayed-type hypersensitivity (DTH) to ovalbumin (OVA) by expanding CD4(+)CD25(+) regulatory T cells and by inhibiting DC migration. Herein we describe how topical NF-kappaB decoy ODN modulate DC maturation with respect to their migration, phenotype, and cytokine profiles. Topical application of NF-kappaB decoy ODN after OVA sensitization delayed the migration of Langerhans cells (LC) into draining lymph nodes, and morphologically mature LC remained in the peripheral tissue 2 days longer than in OVA-sensitized mice without application of NF-kappaB decoy ODN. During migration, NF-kappaB decoy-treated DC preferentially expressed inhibitory B7 molecules (i.e., B7-H1, B7-DC, and B7-H3) compared to OVA-sensitized DC without NF-kappaB decoy ODN, whereas co-stimulatory molecules (MHC class II, B7-1 and B7-2) were upregulated. Adoptive transfer of NF-kappaB decoy-treated DC inhibited DTH induction in prophylactic and therapeutic experiments. Inhibition of DTH by DC transfer was antigen-specific in vivo. This decoy ODN strategy might be useful for regulating immunity through DC.
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Affiliation(s)
- Iwao Isomura
- Department of Geriatric and Environmental Dermatology, Nagoya City University, Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
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Natsume A, Wakabayashi T, Tsujimura K, Shimato S, Ito M, Kuzushima K, Kondo Y, Sekido Y, Kawatsura H, Narita Y, Yoshida J. The DNA demethylating agent 5-aza-2'-deoxycytidine activates NY-ESO-1 antigenicity in orthotopic human glioma. Int J Cancer 2008; 122:2542-53. [PMID: 18240144 DOI: 10.1002/ijc.23407] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cancer/testis antigens (CTAs) are considered to be suitable targets for the immunotherapy of human malignancies. It has been demonstrated that in a variety of tumors, the expression of certain CTAs is activated via the demethylation of their promoter CpG islands. In our study, we have shown that while the composite expression of 13 CTAs in 30 human glioma specimens and newly established cell lines from the Japanese population was nearly imperceptible, the DNA-demethylating agent 5-aza-2'-deoxycytidine (5-aza-CdR) markedly reactivated CTA expression in glioma cells but not in normal human cells. We quantified the diminished methylation status of NY-ESO-1-one of the most immunogenic CTAs-following 5-aza-CdR treatment by using a novel Pyrosequencing technology and methylation-specific PCR. Microarray analysis revealed that 5-aza-CdR is capable of signaling the immune system, particularly, human leukocyte antigen (HLA) class I upregulation. (51)Cr-release cytotoxicity assays and cold target inhibition assays using NY-ESO-1-specific cytotoxic T lymphocyte (CTL) lines demonstrated the presentation of de novo NY-ESO-1 antigenic peptides on the cell surfaces. In an orthotopic xenograft model, the systemic administration of 5-aza-CdR resulted in a significant volume reduction of the transplanted tumors and prolonged the survival of the animals after the adoptive transfer of NY-ESO-1-specific CTLs. These results suggested that 5-aza-CdR induces the expression of epigenetically silenced CTAs in poorly immunogenic gliomas and thereby presents a new strategy for tumor immunotherapy targeting 5-aza-CdR-induced CTAs.
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Affiliation(s)
- Atsushi Natsume
- Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan.
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Hara M, Nakanishi H, Tsujimura K, Matsui M, Yatabe Y, Manabe T, Tatematsu M. Interleukin-2 potentiation of cetuximab antitumor activity for epidermal growth factor receptor-overexpressing gastric cancer xenografts through antibody-dependent cellular cytotoxicity. Cancer Sci 2008; 99:1471-8. [PMID: 18422755 DOI: 10.1111/j.1349-7006.2008.00821.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Cetuximab, a chimeric monoclonal antibody to epidermal growth factor receptor (EGFR), has been proved to have clinically significant antitumor activity against advanced colorectal cancers, but its therapeutic activity for gastric cancers remains unclear. In the present study, we investigated the antitumor effect and action mechanism of cetuximab using EGFR high-expressing (MKN-28) and EGFR low-expressing (GLM-1) gastric cancer cell lines without gene amplification. Cetuximab showed neither significant growth inhibition nor induction of apoptosis in either cell line in vitro, and only slightly inhibited ligand-induced phosphorylation of protein kinase B and extracellular signal-regulated kinase in MKN-28 cells. In contrast, cetuximab significantly inhibited subcutaneous and intraperitoneal tumor growth of MKN-28 cells, but not GLM-1 cells, in nude mice. This antitumor activity was significantly enhanced and diminished in nude mice by treatment with interleukin-2 (IL-2) and antiasialo GM1 antibody, which can expand and deplete natural killer (NK) cells, respectively. Antibody-dependent cellular cytotoxicity (ADCC) of cetuximab, as measured by (51)Cr release assay, was significantly higher in MKN-28 than in GLM-1 cells. This ADCC activity was enhanced by IL-2 and reduced by heat-aggregate of human immunoglobulin G, an inhibitor for FcR-III of NK cells. These results suggest that cetuximab in combination with IL-2 shows significant antitumor activity against EGFR high-expressing gastric cancer mainly through NK cell-mediated ADCC. Combination therapy with cetuximab and IL-2 would thus offer a new potential therapeutic approach for a subset of EGFR-overexpressing gastric cancers.
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Affiliation(s)
- Masayasu Hara
- Division of Oncological Pathology, Aichi Cancer Center Research Institute, 1-1 Kanokoden, Nagoya, Aichi 464-8681, Japan
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Ikehara Y, Shiuchi N, Kabata-Ikehara S, Nakanishi H, Yokoyama N, Takagi H, Nagata T, Koide Y, Kuzushima K, Takahashi T, Tsujimura K, Kojima N. Effective induction of anti-tumor immune responses with oligomannose-coated liposome targeting to intraperitoneal phagocytic cells. Cancer Lett 2008; 260:137-45. [DOI: 10.1016/j.canlet.2007.10.038] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2007] [Revised: 10/22/2007] [Accepted: 10/29/2007] [Indexed: 11/30/2022]
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Torikai H, Akatsuka Y, Miyauchi H, Terakura S, Onizuka M, Tsujimura K, Miyamura K, Morishima Y, Kodera Y, Kuzushima K, Takahashi T. The HLA-A*0201-restricted minor histocompatibility antigen HA-1H peptide can also be presented by another HLA-A2 subtype, A*0206. Bone Marrow Transplant 2007; 40:165-74. [PMID: 17530010 DOI: 10.1038/sj.bmt.1705689] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [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: 11/09/2022]
Abstract
HA-1(H) is one of the most attractive minor histocompatibility antigens (mHA) as a target for immunotherapy of hematopoietic malignancies, but HLA-A*0201 and HLA-B60 molecules capable of presenting HA-1(H)-derived peptides are less common in eastern Asian populations when compared with Caucasian populations. Therefore, an attempt was made to search for novel epitopes presented by HLA alleles other than those previously reported by generating CTL lines from patients undergoing HLA-identical, HA-1 disparate hematopoietic stem cell transplantation (hematopoietic SCT) by stimulation with a 29-mer HA-1(H) peptide spanning a central polymorphic histidine (His). Two CTL clones established were found to be restricted by HLA-A*0206, which is the second or third most common HLA-A2 subtype worldwide. Epitope mapping revealed that the clones recognized the same nonameric peptide as A*0201-restricted HA-1(H), VLHDDLLEA. This epitope was unexpected, since it does not contain any preferred anchor motifs for HLA-A*0206. However, an HLA peptide binding assay revealed stronger binding of this peptide to A*0206 than to A*0201. Interestingly, HLA-A*0206-restricted CTL clones could lyse both HLA-A*0206(+) and HLA-A*0201(+) targets (including leukemic blasts) that express HA-1(H) peptide endogenously, whereas an HLA-A*0201-restricted, HA-1(H)-specific CTL clone failed to lyse HLA-A*0206(+) targets. This finding will expand the patient population who can benefit from HA-1(H)-based immunotherapy.
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Affiliation(s)
- H Torikai
- Division of Immunology, Aichi Cancer Center Research Institute, 1-1 Kanokoden, Chikusa-ku, Nagoya 464-8681, Japan
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Kawase T, Akatsuka Y, Torikai H, Morishima S, Oka A, Tsujimura A, Miyazaki M, Tsujimura K, Miyamura K, Ogawa S, Inoko H, Morishima Y, Kodera Y, Kuzushima K, Takahashi T. Alternative splicing due to an intronic SNP in HMSD generates a novel minor histocompatibility antigen. Blood 2007; 110:1055-63. [PMID: 17409267 DOI: 10.1182/blood-2007-02-075911] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.1] [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: 11/20/2022] Open
Abstract
Here we report the identification of a novel human leukocyte antigen (HLA)-B44-restricted minor histocompatibility antigen (mHA) with expression limited to hematopoietic cells. cDNA expression cloning studies demonstrated that the cytotoxic T lymphocyte (CTL) epitope of interest was encoded by a novel allelic splice variant of HMSD, hereafter designated as HMSD-v. The immunogenicity of the epitope was generated by differential protein expression due to alternative splicing, which was completely controlled by 1 intronic single-nucleotide polymorphism located in the consensus 5' splice site adjacent to an exon. Both HMSD-v and HMSD transcripts were selectively expressed at higher levels in mature dendritic cells and primary leukemia cells, especially those of myeloid lineage. Engraftment of mHA(+) myeloid leukemia stem cells in nonobese diabetic/severe combined immunodeficient (NOD/SCID)/gammac(null) mice was completely inhibited by in vitro preincubation with the mHA-specific CTL clone, suggesting that this mHA is expressed on leukemic stem cells. The patient from whom the CTL clone was isolated demonstrated a significant increase of the mHA-specific T cells in posttransplantation peripheral blood, whereas mHA-specific T cells were undetectable in pretransplantation peripheral blood and in peripheral blood from his donor. These findings suggest that the HMSD-v-encoded mHA (designated ACC-6) could serve as a target antigen for immunotherapy against hematologic malignancies.
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MESH Headings
- Alternative Splicing/genetics
- Alternative Splicing/immunology
- Animals
- Cell Line, Tumor
- DNA, Complementary/genetics
- DNA, Complementary/immunology
- Epitopes, T-Lymphocyte/genetics
- Epitopes, T-Lymphocyte/immunology
- HLA-B Antigens/genetics
- HLA-B Antigens/immunology
- HLA-B44 Antigen
- Humans
- Immunotherapy
- Leukemia, Myeloid/genetics
- Leukemia, Myeloid/immunology
- Leukemia, Myeloid/therapy
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Minor Histocompatibility Antigens/genetics
- Minor Histocompatibility Antigens/immunology
- Neoplastic Stem Cells
- Polymorphism, Single Nucleotide
- RNA Splice Sites
- T-Lymphocytes, Cytotoxic/immunology
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Affiliation(s)
- Takakazu Kawase
- Division of Immunology, Aichi Cancer Center Research Institute, 1-1 Kanokoden, Chikusa-ku, Nagoya 464-8681, Japan
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44
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Ito Y, Demachi-Okamura A, Ohta R, Akatsuka Y, Nishida K, Tsujimura K, Morishima Y, Takahashi T, Kuzushima K. Full-length EBNA1 mRNA-transduced dendritic cells stimulate cytotoxic T lymphocytes recognizing a novel HLA-Cw*0303- and -Cw*0304-restricted epitope on EBNA1-expressing cells. J Gen Virol 2007; 88:770-780. [PMID: 17325349 DOI: 10.1099/vir.0.82519-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 12/20/2022] Open
Abstract
Epstein–Barr virus (EBV)-encoded nuclear antigen 1 (EBNA1) is an attractive target for immunotherapy against EBV-associated malignancies because it is expressed in all EBV-positive cells. Although CD8+ cytotoxic T-lymphocyte (CTL) epitope presentation is largely prevented by its glycine–alanine-repeat domain (GAr), the use of mRNA-transduced dendritic cells (DCs) would offer the advantage of priming EBNA1-specific CTLs. After stimulation with GAr-containing EBNA1-transduced monocyte-derived DCs, two EBNA1-specific CTL clones, B5 and C6, were isolated successfully from a healthy donor. These CTLs recognize peptides in the context of HLA-B*3501 and HLA-Cw*0303, respectively. A novel epitope, FVYGGSKTSL, was then identified, presented by both HLA-Cw*0303 and -Cw*0304, which are expressed by >35 % of Japanese, >20 % of Northern Han Chinese and >25 % of Caucasians. The mixed lymphocyte–peptide culture method revealed that FVYGGSKTSL-specific CTL-precursor frequencies in HLA-Cw*0303- or -Cw*0304-positive donors were between 1×10−5 and 1×10−4 CD8+ T cells. Moreover, both CTL clones inhibited growth of HLA-matched EBV-transformed B lymphocytes in vitro, and B5 CTLs produced a gamma interferon response to EBNA1-expressing gastric carcinoma cells in the context of HLA-Cw*0303. These data demonstrate that EBNA1 mRNA-transduced DCs may be useful tools for inducing EBNA1-specific CTLs that might be of clinical interest for CTL therapy of EBV-associated malignancies.
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Affiliation(s)
- Yoshinori Ito
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | | | - Rieko Ohta
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Yoshiki Akatsuka
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Keiko Nishida
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Kunio Tsujimura
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Yasuo Morishima
- Department of Cell Therapy, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Toshitada Takahashi
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Kiyotaka Kuzushima
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan
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Akazawa T, Ebihara T, Okuno M, Okuda Y, Shingai M, Tsujimura K, Takahashi T, Ikawa M, Okabe M, Inoue N, Okamoto-Tanaka M, Ishizaki H, Miyoshi J, Matsumoto M, Seya T. Antitumor NK activation induced by the Toll-like receptor 3-TICAM-1 (TRIF) pathway in myeloid dendritic cells. Proc Natl Acad Sci U S A 2006; 104:252-7. [PMID: 17190817 PMCID: PMC1765444 DOI: 10.1073/pnas.0605978104] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Myeloid dendritic cells (mDCs) recognize and respond to polyI:C, an analog of dsRNA, by endosomal Toll-like receptor (TLR) 3 and cytoplasmic receptors. Natural killer (NK) cells are activated in vivo by the administration of polyI:C to mice and in vivo are reciprocally activated by mDCs, although the molecular mechanisms are as yet undetermined. Here, we show that the TLR adaptor TICAM-1 (TRIF) participates in mDC-derived antitumor NK activation. In a syngeneic mouse tumor implant model (C57BL/6 vs. B16 melanoma with low H-2 expresser), i.p. administration of polyI:C led to the retardation of tumor growth, an effect relied on by NK activation. This NK-dependent tumor regression did not occur in TICAM-1(-/-) or IFNAR(-/-) mice, whereas a normal NK antitumor response was induced in PKR(-/-), MyD88(-/-), IFN-beta(-/-), and wild-type mice. IFNAR was a prerequisite for the induction of IFN-alpha/beta and TLR3. The lack of TICAM-1 did not affect IFN production but resulted in unresponsiveness to IL-12 production, mDC maturation, and polyI:C-mediated NK-antitumor activity. This NK activation required NK-mDC contact but not IL-12 function in in vivo transwell analysis. Implanted tumor growth in IFNAR(-/-) mice was retarded by adoptively transferring polyI:C-treated TICACM-1-positive mDCs but not TICAM-1(-/-) mDCs. Thus, TICAM-1 in mDCs critically facilitated mDC-NK contact and activation of antitumor NK, resulting in the regression of low MHC-expressing tumors.
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Affiliation(s)
| | - Takashi Ebihara
- Department of Microbiology and Immunology, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku Sapporo 060-8638, Japan
| | - Manabu Okuno
- Departments of *Immunology
- Department of Molecular Immunology, Nara Institute of Science and Technology, Ikoma, Nara 631-0101, Japan
| | - Yu Okuda
- Departments of *Immunology
- Department of Molecular Immunology, Nara Institute of Science and Technology, Ikoma, Nara 631-0101, Japan
| | - Masashi Shingai
- Department of Microbiology and Immunology, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku Sapporo 060-8638, Japan
| | - Kunio Tsujimura
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Aichi 464-8681, Japan; and
| | - Toshitada Takahashi
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Aichi 464-8681, Japan; and
| | - Masahito Ikawa
- Genome Information Research Center, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masaru Okabe
- Genome Information Research Center, Osaka University, Suita, Osaka 565-0871, Japan
| | | | - Miki Okamoto-Tanaka
- **Molecular Biology, Osaka Medical Center for Cancer, Nakamichi 1-3-2, Higashinari-ku, Osaka 537-8511, Japan
| | - Hiroyoshi Ishizaki
- **Molecular Biology, Osaka Medical Center for Cancer, Nakamichi 1-3-2, Higashinari-ku, Osaka 537-8511, Japan
| | - Jun Miyoshi
- **Molecular Biology, Osaka Medical Center for Cancer, Nakamichi 1-3-2, Higashinari-ku, Osaka 537-8511, Japan
| | - Misako Matsumoto
- Departments of *Immunology
- Department of Microbiology and Immunology, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku Sapporo 060-8638, Japan
| | - Tsukasa Seya
- Departments of *Immunology
- Department of Microbiology and Immunology, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku Sapporo 060-8638, Japan
- To whom correspondence should be addressed. E-mail:
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Akatsuka Y, Torikai H, Inamoto Y, Tsujimura K, Morishima Y, Kodera Y, Kuzushima K, Takahashi T. Bone marrow may be a reservoir of long-lived memory T cells specific for minor histocompatibility antigen. Br J Haematol 2006; 135:413-4. [PMID: 16978218 DOI: 10.1111/j.1365-2141.2006.06313.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Torikai H, Akatsuka Y, Miyazaki M, Tsujimura A, Yatabe Y, Kawase T, Nakao Y, Tsujimura K, Motoyoshi K, Morishima Y, Kodera Y, Kuzushima K, Takahashi T. The human cathepsin H gene encodes two novel minor histocompatibility antigen epitopes restricted by HLA-A*3101 and -A*3303. Br J Haematol 2006; 134:406-16. [PMID: 16822283 DOI: 10.1111/j.1365-2141.2006.06205.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [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: 11/28/2022]
Abstract
Minor histocompatibility antigens (mHags) play crucial roles in the induction of graft versus host disease (GVHD) and/or graft versus leukaemia (GVL) effects following human leucocyte antigen (HLA)-identical haematopoietic stem cell transplantation (HSCT). Using HLA-A*3101- and -A*3303-restricted cytotoxic T lymphocyte (CTL) clones generated from different post-HSCT recipients, we identified two novel mHag epitopes encoded by the leader sequence of cathepsin H (CTSH) isoform a. The nonameric sequence ATLPLLCAR was defined as an HLA-A*3101-restricted epitope (CTSH(R)/A31), while a decameric peptide featuring a one N-terminal amino acid extension, WATLPLLCAR, was presented by HLA-A*3303 (CTSH(R)/A33). The immunogenicity of both epitopes was totally dependent on the polymorphic C-terminal arginine residue and substitution with glycine completely abolished binding to the corresponding HLA molecules. Thus, the immunogenicity of this mHag is exerted by differential HLA binding capacity. CTSH is relatively ubiquitously expressed at protein levels, thus it may be involved in GVHD and anti-leukaemic/tumour responses. Interestingly, however, CTL clones predominantly lysed targets of haematopoietic cell origin, which could not be explained in terms of the immunoproteasome system. Although the mechanisms involved in the differential susceptibility remain to be determined, these data suggest that CTSH-encoded mHags could be targets for GVL effects.
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Affiliation(s)
- H Torikai
- Division of Immunology, Aichi Cancer Centre Research Institute, Nagoya, Japan
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48
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Tsujimura K, Obata Y, Matsudaira Y, Nishida K, Akatsuka Y, Ito Y, Demachi-Okamura A, Kuzushima K, Takahashi T. Characterization of murine CD160+ CD8+ T lymphocytes. Immunol Lett 2006; 106:48-56. [PMID: 16764942 DOI: 10.1016/j.imlet.2006.04.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2006] [Revised: 04/21/2006] [Accepted: 04/23/2006] [Indexed: 01/09/2023]
Abstract
CD160 is an Ig-like glycoprotein expressed on NK, NKT and TCRgammadelta T cells, as well as intestinal intraepithelial T lymphocytes. In addition, a minor subset of CD8(+) but not CD4(+) T cells in the periphery is also known to express CD160, but the subset has not been fully characterized. In this study, we prepared anti-murine CD160 mAbs and investigated the expression profile of CD160 on various subsets of CD8(+) T cells. The amount of CD160 on almost all CD8(+) T cells was increased upon CD3-mediated stimulation in vitro, and soluble CD160 was found to be released. Flow cytometric analysis revealed most CD8(+) T cells expressing CD160 to show a CD44(high) phenotype in vivo. On further analysis, both CD44(high)CD62L(low) effector memory T cells (T(EM)) and CD44(high)CD62L(high) central memory T cells (T(CM)) expressed CD160 at an intermediate level. High levels were evident with recently activated CD8(+) T(EM). Naïve CD8(+) T cells presumably immediately after stimulation (CD44(low)CD62L(low)CD69(+)) also expressed CD160, but only at a low level. Purified CD160(+) CD8(+) T cells from OT-1 transgenic mice expressing TCR against OVA residues 257-264 presented by H-2K(b) produced IFN-gamma more rapidly than CD160(-) CD8(+) T cells upon antigen stimulation. These results together show that CD160 is expressed on the majority of CD8(+) memory T cells as well as recently activated CD8(+) T cells.
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Affiliation(s)
- Kunio Tsujimura
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan.
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Demachi-Okamura A, Ito Y, Akatsuka Y, Tsujimura K, Morishima Y, Takahashi T, Kuzushima K. Epstein-Barr virus (EBV) latent membrane protein-1-specific cytotoxic T lymphocytes targeting EBV-carrying natural killer cell malignancies. Eur J Immunol 2006; 36:593-602. [PMID: 16479544 DOI: 10.1002/eji.200535485] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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: 11/06/2022]
Abstract
Epstein-Barr virus (EBV)-encoded latent membrane protein (LMP) 1 is a potential target for immunotherapy of some proportion of Hodgkin's disease cases, nasopharyngeal carcinomas, EBV-associated natural killer (NK)/T lymphomas, and chronic active EBV infection (CAEBV). Since it is unknown whether EBV-infected NK/T cells are susceptible to lysis by LMP1-specific cytotoxic T lymphohcytes (CTL), we here tested the ability of mRNA-transduced antigen-presenting cells (APC) to stimulate rare LMP1-specific CTL. A 43-amino acid N-terminal deletion mutant LMP1 (DeltaLMP1) could be efficiently expressed in dendritic cells and CD40-activated B cells upon mRNA electroporation. DeltaLMP1-expressing APC were found to stimulate LMP1-specific CTL from a healthy donor and a CTL clone recognized a peptide, IIIILIIFI, presented by HLA-A*0206 molecules. Processing and presentation of the antigenic peptide proved dependent on expression of an immunoproteasome subunit, low-molecular-weight protein-7, as confirmed by RNA interference gene silencing. Furthermore, an EBV-infected NK cell line derived from a patient with CAEBV, and another from an NK lymphoma with enforced HLA-A*0206 expression, were specifically lysed by the CTL. Overall, these data suggest that immunotherapy targeting LMP1 in EBV-associated NK lymphomas and CAEBV might serve as an alternative treatment modality.
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Isomura I, Tsujimura K, Morita A. Antigen-specific peripheral tolerance induced by topical application of NF-kappaB decoy oligodeoxynucleotide. J Invest Dermatol 2006; 126:97-104. [PMID: 16417224 DOI: 10.1038/sj.jid.5700027] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [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: 11/08/2022]
Abstract
Activation and maturation of dendritic cells (DC) are crucial for the establishment of delayed-type hypersensitivity (DTH). However, antigen presentation by immature DC (iDC) might lead to antigen-specific peripheral tolerance. NF-kappaB plays significant roles in upregulation of co-stimulatory molecules and cytokines in DC and therefore we investigated whether NF-kappaB decoy oligodeoxynucleotide (ODN) might induce tolerance to DTH. NF-kappaB decoy ODN suppressed ovalbumin (OVA)-induced DTH responses not only in naïve but also in presensitized mice. The suppressive effect was found to be antigen-specific. NF-kappaB decoy ODN-induced tolerance involved CD4(+)CD25(+) regulatory T cells (Treg), because in vivo depletion of CD25(+) T cells abrogated the tolerance, whereas adoptive transfer of such T cell population from tolerant mice induced tolerance. Furthermore, the induction of Treg was related to insufficient migration and/or maturation of DC, because a sizable DC population still remained in peripheral tissue even after exposure to exogenous antigen in NF-kappaB decoy ODN-treated mice. Even if they migrated into lymph nodes, they showed insufficient upregulation of co-stimulatory molecules and impaired antigen-specific activation of T cells. Topical application of NF-kappaB decoy ODN might thus be a new approach to induce antigen-specific peripheral tolerance.
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Affiliation(s)
- Iwao Isomura
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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