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Gatto M, Radu CM, Luisetto R, Ghirardello A, Bonsembiante F, Trez D, Valentino S, Bottazzi B, Simioni P, Cavicchioli L, Doria A. Immunization with Pentraxin3 prevents transition from subclinical to clinical lupus nephritis in lupus-prone mice: Insights from renal ultrastructural findings. J Autoimmun 2020; 111:102443. [PMID: 32265078 DOI: 10.1016/j.jaut.2020.102443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 03/15/2020] [Accepted: 03/22/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Pentraxin3 (PTX3) is an emerging player in lupus nephritis (LN). Anti-PTX3 antibodies showed to delay LN occurrence in vivo. AIM To evaluate renal changes following immunization with PTX3 in a murine model of LN. MATERIALS AND METHODS Twenty-two lupus-prone New Zealand Black/White (NZB/W)F1 mice were divided into two groups (n = 11) and subcutaneously injected with human recombinant (hr)PTX3 100 μg or phosphate buffer saline (PBS) 200 μl, three times 3 weeks apart, starting before development of proteinuria. Five mice from each group were scheduled for sacrifice at week 22 and 6 from each group at week 29. Renal lesions included electron-dense deposits (EDD), glomerular deposition of IgG, complement and PTX3 as markers of renal inflammation. They were evaluated by immunofluorescence (IF), confocal and immunoelectron microscopy (IEM). Validated semiquantitative scores were used when available to score renal lesions. Chi-squared test with Fisher exact test was used for comparison. RESULTS Nineteen out of 22 mice were sacrificed as scheduled. Only hrPTX3-immunized mice developed anti-PTX3 antibodies. Compared to PBS-injected mice, they displayed a dramatic decrease in glomerular deposits of IgG, C1q and PTX3, as well as in the amount of EDD (p = 0.006) and podocyte effacement (p = 0.043). Importantly, PTX3 was pinpointed inside the EDD and co-localized with nuclear material. CONCLUSIONS Immunization with PTX3 prevented progression from the preclinical to the clinical stage of LN, inciting anti-PTX3 antibodies and preventing renal PTX3 deposition. PTX3 is a novel component of EDD, submitting it as one initiating autoantigen in LN and as potential target for early treatment.
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Affiliation(s)
- Mariele Gatto
- Unit of Rheumatology, Department of Medicine (DIMED), University of Padova, Padova, Italy
| | - Claudia M Radu
- Department of Women's and Children's Health, University of Padova, Padova, Italy; Thrombotic and Haemorrhagic Diseases Unit, Department of Medicine (DIMED), University of Padova, Padova, Italy
| | - Roberto Luisetto
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - Anna Ghirardello
- Unit of Rheumatology, Department of Medicine (DIMED), University of Padova, Padova, Italy
| | - Federico Bonsembiante
- Department of Comparative Biomedicine and Food Science (BCA), University of Padova, Padova, Italy; Department of Animal Medicine, Production and Health University of Padova, Italy
| | - Davide Trez
- Department of Comparative Biomedicine and Food Science (BCA), University of Padova, Padova, Italy
| | | | | | - Paolo Simioni
- Thrombotic and Haemorrhagic Diseases Unit, Department of Medicine (DIMED), University of Padova, Padova, Italy
| | - Laura Cavicchioli
- Department of Comparative Biomedicine and Food Science (BCA), University of Padova, Padova, Italy
| | - Andrea Doria
- Unit of Rheumatology, Department of Medicine (DIMED), University of Padova, Padova, Italy.
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Towards a pro-resolving concept in systemic lupus erythematosus. Semin Immunopathol 2019; 41:681-697. [DOI: 10.1007/s00281-019-00760-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 09/06/2019] [Indexed: 12/13/2022]
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Hamano Y, Ito F, Suzuki O, Koura M, Matsuoka S, Kobayashi T, Sugitani Y, Wali N, Koyanagi A, Hino O, Suzuki S, Sugamata R, Yoshizawa H, Yumura W, Maruyama N, Kameoka Y, Noda Y, Hasegawa Y, Arai T, Suzuki K. Vasculitis and crescentic glomerulonephritis in a newly established congenic mouse strain derived from ANCA-associated vasculitis-prone SCG/Kj mice. Autoimmunity 2019; 52:208-219. [DOI: 10.1080/08916934.2019.1658191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Yoshitomo Hamano
- Department of Pathology and Oncology, Juntendo University School of Medicine, Tokyo, Japan
- Team for Molecular Regulation of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Fuyu Ito
- Asia International Institute of Infectious Disease Control, Teikyo University, Tokyo, Japan
| | - Osamu Suzuki
- The National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Minako Koura
- The National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Shuji Matsuoka
- Department of Pathology and Oncology, Juntendo University School of Medicine, Tokyo, Japan
| | - Toshiyuki Kobayashi
- Department of Pathology and Oncology, Juntendo University School of Medicine, Tokyo, Japan
| | - Yoshinobu Sugitani
- Department of Pathology and Oncology, Juntendo University School of Medicine, Tokyo, Japan
| | - Nadila Wali
- Department of Pathology and Oncology, Juntendo University School of Medicine, Tokyo, Japan
| | - Ai Koyanagi
- Department of Pathology and Oncology, Juntendo University School of Medicine, Tokyo, Japan
| | - Okio Hino
- Department of Pathology and Oncology, Juntendo University School of Medicine, Tokyo, Japan
| | - Shoichi Suzuki
- Asia International Institute of Infectious Disease Control, Teikyo University, Tokyo, Japan
| | - Ryuichi Sugamata
- Asia International Institute of Infectious Disease Control, Teikyo University, Tokyo, Japan
| | | | - Wako Yumura
- Department of Nephrology, International University of Health and Welfare Hospital, Nasushiobara, Japan
| | - Naoki Maruyama
- Team for Molecular Regulation of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | | | - Yoshihiro Noda
- Laboratory Animal Facility, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Yasuko Hasegawa
- Department of Pathology, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Tomio Arai
- Department of Pathology, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Kazuo Suzuki
- Asia International Institute of Infectious Disease Control, Teikyo University, Tokyo, Japan
- A-CLIP Institute, Chiba, Japan
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Pedersen HL, Horvei KD, Thiyagarajan D, Norby GE, Seredkina N, Moroni G, Eilertsen GØ, Holdaas H, Strøm EH, Bakland G, Meroni PL, Rekvig OP. Lupus nephritis: low urinary DNase I levels reflect loss of renal DNase I and may be utilized as a biomarker of disease progression. JOURNAL OF PATHOLOGY CLINICAL RESEARCH 2018; 4:193-203. [PMID: 29624903 PMCID: PMC6065113 DOI: 10.1002/cjp2.99] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 01/10/2018] [Accepted: 02/19/2018] [Indexed: 11/21/2022]
Abstract
Renal DNase I is lost in advanced stages of lupus nephritis. Here, we determined if loss of renal DNase I reflects a concurrent loss of urinary DNase I, and whether absence of urinary DNase I predicts disease progression. Mouse and human DNase I protein and DNase I endonuclease activity levels were determined by western blot, gel, and radial activity assays at different stages of the murine and human forms of the disease. Cellular localization of DNase I was analyzed by immunohistochemistry, immunofluorescence, confocal microscopy, and immunoelectron microscopy. We further compared DNase I levels in human native and transplanted kidneys to determine if the disease depended on autologous renal genes, or whether the nephritic process proceeded also in transplanted kidneys. The data indicate that reduced renal DNase I expression level relates to serious progression of lupus nephritis in murine, human native, and transplanted kidneys. Notably, silencing of renal DNase I correlated with loss of DNase I endonuclease activity in the urine samples. Thus, urinary DNase I levels may therefore be used as a marker of lupus nephritis disease progression and reduce the need for renal biopsies.
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Affiliation(s)
- Hege L Pedersen
- Department of Medical Biology, UiT-the Arctic University of Norway, Tromsø, Norway
| | - Kjersti D Horvei
- Department of Medical Biology, UiT-the Arctic University of Norway, Tromsø, Norway
| | - Dhivya Thiyagarajan
- Department of Medical Biology, UiT-the Arctic University of Norway, Tromsø, Norway
| | - Gudrun E Norby
- Department of Rheumatology, OUH-Oslo University Hospital, Oslo, Norway
| | - Natalya Seredkina
- Department of Medical Biology, UiT-the Arctic University of Norway, Tromsø, Norway
| | - Gabriella Moroni
- Nephrological Unit, Fondazione Ca' Granda IRCCS, Ospedale Maggiore, Milano, Italy
| | - Gro Ø Eilertsen
- Department of Clinical Medicine, UiT-the Arctic University of Norway, Tromsø, Norway
| | - Hallvard Holdaas
- Department of Medicine, OUH-Oslo University Hospital, Oslo, Norway
| | - Erik H Strøm
- Department of Pathology, OUH-Oslo University Hospital, Oslo, Norway
| | - Gunnstein Bakland
- Department of Rheumatology, University Hospital of North Norway, Tromsø, Norway
| | - Pier-Luigi Meroni
- Department of Clinical Sciences and Community Health, University of Milan and IRCCS, Istituto Auxologico Italiano, Milan, Italy
| | - Ole P Rekvig
- Department of Medical Biology, UiT-the Arctic University of Norway, Tromsø, Norway
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