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Koike T, Miura K, Hatta Y, Nakamura H, Hirabayashi Y, Yuda M, Harada T, Hirai S, Tsuboi I, Aizawa S. Macrophage depletion using clodronate liposomes reveals latent dysfunction of the hematopoietic microenvironment associated with persistently imbalanced M1/M2 macrophage polarization in a mouse model of hemophagocytic lymphohistiocytosis. Ann Hematol 2023; 102:3311-3323. [PMID: 37656190 DOI: 10.1007/s00277-023-05425-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 08/23/2023] [Indexed: 09/02/2023]
Abstract
Hemophagocytic lymphohistiocytosis (HLH), a hyperinflammatory syndrome, is caused by the incessant activation of lymphocytes and macrophages, resulting in damage to organs, including hematopoietic organs. Recently, we demonstrated that repeated lipopolysaccharide (LPS) treatment induces HLH-like features in senescence-accelerated (SAMP1/TA-1) mice but not in senescence-resistant control (SAMR1) mice. Hematopoietic failure in LPS-treated SAMP1/TA-1 mice was attributed to hematopoietic microenvironment dysfunction, concomitant with severely imbalanced M1 and M2 macrophage polarization. Macrophages are a major component of the bone marrow (BM) hematopoietic microenvironment. Clodronate liposomes are useful tools for in vivo macrophage depletion. In this study, we depleted macrophages using clodronate liposomes to determine their role in the hematopoietic microenvironment in SAMP1/TA-1 and SAMR1 mice. Under clodronate liposome treatment, the response between SAMR1 and SAMP1/TA-1 mice differed as follows: (1) increase in the number of activated M1 and M2 macrophages derived from newly generated macrophages and M2-dominant and imbalanced M1 and M2 macrophage polarization in the BM and spleen; (2) severe anemia and thrombocytopenia; (3) high mortality rate; (4) decrease in erythroid progenitors and B cell progenitors in the BM; and (5) decrease in the mRNA expression of erythroid-positive regulators such as erythropoietin and increase in that of erythroid- and B lymphoid-negative regulators such as interferon-γ in the BM. Depletion of residual macrophages in SAMP1/TA-1 mice impaired hematopoietic homeostasis, particularly erythropoiesis and B lymphopoiesis, owing to functional impairment of the hematopoietic microenvironment accompanied by persistently imbalanced M1/M2 polarization. Thus, macrophages play a vital role in regulating the hematopoietic microenvironment to maintain homeostasis.
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Affiliation(s)
- Takashi Koike
- Division of Hematology and Oncology, Department of Internal Medicine, Nihon University School of Medicine, 30-1 Ohyaguchi-kami-cho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Katsuhiro Miura
- Division of Hematology and Oncology, Department of Internal Medicine, Nihon University School of Medicine, 30-1 Ohyaguchi-kami-cho, Itabashi-ku, Tokyo, 173-8610, Japan.
| | - Yoshihiro Hatta
- Division of Hematology and Oncology, Department of Internal Medicine, Nihon University School of Medicine, 30-1 Ohyaguchi-kami-cho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Hideki Nakamura
- Division of Hematology and Oncology, Department of Internal Medicine, Nihon University School of Medicine, 30-1 Ohyaguchi-kami-cho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Yoko Hirabayashi
- Center for Biological Safety and Research, National Institute of Health Sciences, Kawasaki, Japan
| | - Miyuki Yuda
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo, Japan
| | - Tomonori Harada
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo, Japan
| | - Shuichi Hirai
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo, Japan
| | - Isao Tsuboi
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo, Japan
| | - Shin Aizawa
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo, Japan
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Yuda M, Aizawa S, Tsuboi I, Hirabayashi Y, Harada T, Hino H, Hirai S. Imbalanced M1 and M2 Macrophage Polarization in Bone Marrow Provokes Impairment of the Hematopoietic Microenvironment in a Mouse Model of Hemophagocytic Lymphohistiocytosis. Biol Pharm Bull 2022; 45:1602-1608. [DOI: 10.1248/bpb.b22-00108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Miyuki Yuda
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine
| | - Shin Aizawa
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine
| | - Isao Tsuboi
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine
| | - Yoko Hirabayashi
- Center for Biological Safety and Research, National Institute of Health Sciences
| | - Tomonori Harada
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine
| | - Hirotsugu Hino
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine
| | - Shuichi Hirai
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine
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Harada T, Tsuboi I, Hino H, Yuda M, Hirabayashi Y, Hirai S, Aizawa S. Age-related exacerbation of hematopoietic organ damage induced by systemic hyper-inflammation in senescence-accelerated mice. Sci Rep 2021; 11:23250. [PMID: 34853370 PMCID: PMC8636590 DOI: 10.1038/s41598-021-02621-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 11/16/2021] [Indexed: 12/11/2022] Open
Abstract
Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening systemic hyper-inflammatory disorder. The mortality of HLH is higher in the elderly than in young adults. Senescence-accelerated mice (SAMP1/TA-1) exhibit characteristic accelerated aging after 30 weeks of age, and HLH-like features, including hematopoietic organ damage, are seen after lipopolysaccharide (LPS) treatment. Thus, SAMP1/TA-1 is a useful model of hematological pathophysiology in the elderly with HLH. In this study, dosing of SAMP1/TA-1 mice with LPS revealed that the suppression of myelopoiesis and B-lymphopoiesis was more severe in aged mice than in young mice. The bone marrow (BM) expression of genes encoding positive regulators of myelopoiesis (G-CSF, GM-CSF, and IL-6) and of those encoding negative regulators of B cell lymphopoiesis (TNF-α) increased in both groups, while the expression of genes encoding positive-regulators of B cell lymphopoiesis (IL-7, SDF-1, and SCF) decreased. The expression of the GM-CSF-encoding transcript was lower in aged mice than in young animals. The production of GM-CSF by cultured stromal cells after LPS treatment was also lower in aged mice than in young mice. The accumulation of the TNF-α-encoding transcript and the depletion of the IL-7-encoding transcript were prolonged in aged mice compared to young animals. LPS dosing led to a prolonged increase in the proportion of BM M1 macrophages in aged mice compared to young animals. The expression of the gene encoding p16INK4a and the proportion of β-galactosidase- and phosphorylated ribosomal protein S6-positive cells were increased in cultured stromal cells from aged mice compared to those from young animals, while the proportion of Ki67-positive cells was decreased in stromal cells from aged mice. Thus, age-related deterioration of stromal cells probably causes the suppression of hematopoiesis in aged mice. This age-related latent organ dysfunction may be exacerbated in elderly people with HLH, resulting in poor prognosis.
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Affiliation(s)
- Tomonori Harada
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan.
| | - Isao Tsuboi
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Hirotsugu Hino
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Miyuki Yuda
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Yoko Hirabayashi
- Center for Biological Safety and Research, National Institute of Health Sciences, Kawasaki, 210-9501, Japan
| | - Shuichi Hirai
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Shin Aizawa
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
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Tsuboi I, Harada T, Hirabayashi Y, Aizawa S. Dynamics of hematopoiesis is disrupted by impaired hematopoietic microenvironment in a mouse model of hemophagocytic lymphohistiocytosis. Ann Hematol 2020; 99:1515-1523. [PMID: 32506245 DOI: 10.1007/s00277-020-04095-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 05/17/2020] [Indexed: 11/29/2022]
Abstract
Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening systemic hyperinflammatory disorder. We found recently that repeated lipopolysaccharide (LPS) treatment induces HLH-like features in senescence-accelerated mice (SAMP1/TA-1) but not in senescence-resistant control mice (SAMR1). In this study, we analyzed the dynamics of hematopoiesis in this mouse model of HLH. When treated repeatedly with LPS, the numbers of myeloid progenitor cells (CFU-GM) and B-lymphoid progenitor cells (CFU-preB) in the bone marrow (BM) rapidly decreased after each treatment in both strains. The number of CFU-GM in SAMP1/TA-1 and SAMR1, and of CFU-preB in SAMR1, returned to pretreatment levels by 7 days after each treatment. However, the recovery in the number of CFU-preB in SAMP1/TA-1 was limited. In both strains, the BM expression of genes encoding positive regulators of myelopoiesis (granulocyte colony-stimulating factor (G-CSF), granulocyte macrophage colony-stimulating factor (GM-CSF), and interleukin (IL)-6), and negative regulators of B lymphopoiesis (tumor necrosis factor (TNF)-α) was increased. The expression of genes encoding positive regulators of B lymphopoiesis (stromal-cell derived factor (SDF)-1, IL-7, and stem cell factor (SCF)) was persistently decreased in SAMP1/TA-1 but not in SAMR1. Expression of the gene encoding p16INK4a and the proportion of β-galactosidase-positive cells were increased in cultured stromal cells obtained from LPS-treated SAMP1/TA-1 but not in those from LPS-treated SAMR1. LPS treatment induced qualitative changes in stromal cells, which comprise the microenvironment supporting appropriate hematopoiesis, in SAMP1/TA-1; these stromal cell changes are inferred to disrupt the dynamics of hematopoiesis. Thus, hematopoietic tissue is one of the organs that suffer life-threatening damage in HLH.
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Affiliation(s)
- Isao Tsuboi
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Ohyaguchi-kami-machi, Itabashi-ku, Tokyo, 173-8610, Japan.
| | - Tomonori Harada
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Ohyaguchi-kami-machi, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Yoko Hirabayashi
- Center for Biological Safety and Research, National Institute of Health Sciences, Kawasaki, Japan
| | - Shin Aizawa
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Ohyaguchi-kami-machi, Itabashi-ku, Tokyo, 173-8610, Japan
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Tsuboi I, Harada T, Hirabayashi Y, Aizawa S. Senescence-accelerated mice (SAMP1/TA-1) treated repeatedly with lipopolysaccharide develop a condition that resembles hemophagocytic lymphohistiocytosis. Haematologica 2019; 104:1995-2005. [PMID: 30819910 PMCID: PMC6886438 DOI: 10.3324/haematol.2018.209551] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 02/25/2019] [Indexed: 11/21/2022] Open
Abstract
Hemophagocytic lymphohistiocytosis is a life-threatening systemic hyperinflammatory disorder with primary and secondary forms. Primary hemophagocytic lymphohistiocytosis is associated with inherited defects in various genes that affect the immunological cytolytic pathway. Secondary hemophagocytic lymphohistiocytosis is not inherited, but complicates various medical conditions including infections, autoinflammatory/autoimmune diseases, and malignancies. When senescence-accelerated mice (SAMP1/TA-1) with latent deterioration of immunological function and senescence-resistant control mice (SAMR1) were treated repeatedly with lipopolysaccharide, SAMP1/TA-1 mice displayed the clinicopathological features of hemophagocytic lymphohistiocytosis such as hepatosplenomegaly, pancytopenia, hypofibrinogenemia, hyperferritinemia, and hemophagocytosis. SAMR1 mice showed no features of hemophagocytic lymphohistiocytosis. Lipopolysaccharide induced upregulation of proinflammatory cytokines such as interleukin-1β, interleukin-6, tumor necrosis factor-α, and interferon-γ, and interferon-γ-inducible chemokines such as c-x-c motif chemokine ligands 9 and 10 in the liver and spleen in both SAMP1/TA-1 and SAMR1 mice. However, upregulation of proinflammatory cytokines and interferon-γ-inducible chemokines in the liver persisted for longer in SAMP1/TA-1 mice than in SAMR1 mice. In addition, the magnitude of upregulation of interferon-γ in the liver and spleen after lipopolysaccharide treatment was greater in SAMP1/TA-1 mice than in SAMR1 mice. Furthermore, lipopolysaccharide treatment led to a prolonged increase in the proportion of peritoneal M1 macrophages and simultaneously to a decrease in the proportion of M2 macrophages in SAMP1/TA-1 mice compared with SAMR1 mice. Lipopolysaccharide appeared to induce a hyperinflammatory reaction and prolonged inflammation in SAMP1/TA-1 mice, resulting in features of secondary hemophagocytic lymphohistiocytosis. Thus, SAMP1/TA-1 mice represent a useful mouse model to investigate the pathogenesis of bacterial infection-associated secondary hemophagocytic lymphohistiocytosis.
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Affiliation(s)
- Isao Tsuboi
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo .,Cellular and Molecular Toxicology Division, National Center for Biological Safety and Research, National Institute of Health Science, Kawasaki, Japan
| | - Tomonori Harada
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo
| | - Yoko Hirabayashi
- Cellular and Molecular Toxicology Division, National Center for Biological Safety and Research, National Institute of Health Science, Kawasaki, Japan
| | - Shin Aizawa
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo
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Tsuboi I, Harada T, Hirabayashi Y, Kanno J, Aizawa S. Differential Regulation of Lympho-Myelopoiesis by Stromal Cells in the Early and Late Phases in BALB/c Mice Repeatedly Exposed to Lipopolysaccharide. Biol Pharm Bull 2016; 39:1939-1947. [DOI: 10.1248/bpb.b16-00375] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Isao Tsuboi
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine
| | - Tomonori Harada
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine
| | - Yoko Hirabayashi
- Cellular and Molecular Toxicology Division, National Center for Biological Safety and Research, National Institute of Health Sciences
| | - Jun Kanno
- Cellular and Molecular Toxicology Division, National Center for Biological Safety and Research, National Institute of Health Sciences
| | - Shin Aizawa
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine
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Hirabayashi Y, Tsuboi I, Nakachi K, Kusunoki Y, Inoue T. Experimentally induced, synergistic late effects of a single dose of radiation and aging: significance in LKS fraction as compared with mature blood cells. J Appl Toxicol 2014; 35:230-40. [DOI: 10.1002/jat.3088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 10/01/2014] [Accepted: 10/01/2014] [Indexed: 01/19/2023]
Affiliation(s)
- Yoko Hirabayashi
- Cellular and Molecular Toxicology Division, National Center for Biological Safety and Research; National Institute of Health Sciences; 1-18-1 Kamiyohga Setagayaku Tokyo 158-8501 Japan
| | - Isao Tsuboi
- Department of Function and Structural Medicine; Nihon University School of Medicine; 30-1 Ohyaguchi-kamicho Itabashiku Tokyo 173-8610 Japan
| | - Kei Nakachi
- Department of Radiobiology/Molecular Epidemiology; Radiation Effects Research Foundation; 5-2 Hijiyamakouen Minamiku Hiroshima 732-0815 Japan
| | - Yoichiro Kusunoki
- Department of Radiobiology/Molecular Epidemiology; Radiation Effects Research Foundation; 5-2 Hijiyamakouen Minamiku Hiroshima 732-0815 Japan
| | - Tohru Inoue
- Department of Function and Structural Medicine; Nihon University School of Medicine; 30-1 Ohyaguchi-kamicho Itabashiku Tokyo 173-8610 Japan
- ToxSCO (ToxSafety Consultations)
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Maioli TU, de Melo Silva B, Dias MN, Paiva NC, Cardoso VN, Fernandes SO, Carneiro CM, Dos Santos Martins F, de Vasconcelos Generoso S. Pretreatment with Saccharomyces boulardii does not prevent the experimental mucositis in Swiss mice. J Negat Results Biomed 2014; 13:6. [PMID: 24721659 PMCID: PMC4004512 DOI: 10.1186/1477-5751-13-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 04/07/2014] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The antimetabolite chemotherapy 5-Fluorouracil is one of the most commonly prescribed drugs in clinical cancer treatment. Although this drug is not specific for cancer cells and also acts on healthy cells, it can cause mucositis, a common collateral effect. Dysbiosis has also been described in 5-fluorouracil-induced mucositis and is likely to contribute to the overall development of mucositis. In light of this theory, the use of probiotics could be a helpful strategy to alleviate mucositis. So the aim of this study was evaluate the impact of the probiotic Saccharomyces boulardii in a model of mucositis. RESULTS After induced of mucositis, mice from the Mucositis groups showed a decrease in food consumption (p < 0.05) and therefore had a greater weight loss (p < 0.05). The treatment with Saccharomyces boulardii did not reverse this effect (p > 0.05). Mucositis induced an increase in intestinal permeability and intestinal inflammation (p < 0.05). There were no differences in mucosal lesions, intestinal permeability and sIgA secretion (p > 0.05) in mice pretreated with S. boulardii. CONCLUSIONS S. boulardii was not able to prevent the effects of experimental mucositis induced by 5- Fluorouracil.
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Tsuboi I, Harada T, Hirabayashi Y, Kanno J, Inoue T, Aizawa S. Age-related decline of mast cell regeneration in senescence-accelerated mice (SAMP1) after chemical myeloablation due to senescent stromal cell impairment. Exp Biol Med (Maywood) 2013; 237:1289-97. [PMID: 23239440 DOI: 10.1258/ebm.2012.012158] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An age-related decline in immune functions is referred to as immunosenescence. Mast cells play an important role in the immune system. However, it has not yet been determined if aging may affect mast-cell development. In the present study, we examined the age-related change in mast-cell development after myeloablation with 5-fluorouracil (5-FU) in senescence accelerated mice (SAMP1), which exhibit senescence-mimicking stromal cell impairment after 30 weeks of age. We found that aged mice with stromal cell impairment (30-36 weeks old) showed a lower recovery of the number of femoral mast-cell progenitors (colony-forming unit [CFU]-mast) (64% of steady state), whereas young mice (8-12 weeks old) showed a higher recovery (122% of steady state). Stromal cells influence mast-cell development by producing positive regulators such as stem cell factor (SCF) and negative regulators such as transforming growth factor-beta (TGF-β). The ratio of the gene expression of SCF to that of TGF-β (SCF/TGF-β ratio) indicates the balance of positive and negative regulation of mast-cell development. SCF/TGF-β ratio increased in both the young and aged mice after 5-FU treatment. However, the SCF/TGF-β ratio rapidly decreased in aged mice, whereas it remained high in young mice. The number of femoral CFU-mast in the S-phase after 5-FU treatment reflects the activation of positive-dominant regulation for mast-cell development by stromal cells. Aged mice showed lower recovery of the number of femoral CFU-mast in the S-phase (47% of steady state), whereas young mice showed a higher recovery (205% of steady state). These results suggest that mast-cell development declines with aging due to stromal-cell functional impairment, which contributes to immunosenescence.
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Affiliation(s)
- Isao Tsuboi
- Department of Functional Morphology, Nihon University School of Medicine, Ohyaguchi-kami-machi, Itabashiku, Tokyo.
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Aisaki K, Tsuboi I, Harada T, Oshima H, Yamashita A, Hirabayashi Y, Kanno J, Inoue T, Aizawa S. Neopterin, inflammation-associated product, prolongs erythropoiesis suppression in aged SAMP1 mice due to senescent stromal-cell impairment. Exp Biol Med (Maywood) 2012; 237:279-86. [PMID: 22442357 DOI: 10.1258/ebm.2011.011303] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Anemia induced by inflammation is well known to be more serious in the elderly than in non-elderly adults; however, the reason why this is so remains unclear. Neopterin produced by monocytes during inflammation promotes myelopoiesis but suppresses B-lymphopoiesis and erythropoiesis, by activating stromal cells in mice. Here, age-related changes in the erythropoietic response to neopterin were determined using senescence accelerated mice (SAMP1) with senescence stromal-cell impairment. Intravenous injection of neopterin into young mice (8-12 weeks old) resulted in a decrease in erythroid progenitor cell number in the bone marrow (BM), concomitant with an increase in myeloid progenitor cell number over one week. Intravenous injection of neopterin into aged mice (30-36 weeks old) resulted in a prolonged decrease in erythroid progenitor cell number in the BM over three weeks and a limited increase in myeloid progenitor cell number over one day. Neopterin treatment induced a decrease in serum erythropoietin concentrations in young mice but not in aged mice. The gene expression of tumor necrosis factor α (TNF-α), a negative regulator of erythropoiesis, was up-regulated in the BM of both young and aged mice, and the degree of TNF-α up-regulation was the same in both groups. The gene expression of interleukin (IL)-11, a positive regulator of erythropoiesis, was also up-regulated over one day in both young and aged mice. However, IL-11 gene expression remained up-regulated thereafter in young mice, whereas it was rapidly down-regulated in aged mice. These data suggest that prolonged suppression of erythropoiesis in aged mice may be due to a decrease in the production of positive regulators rather than to an increase in the production of negative regulators. Our combined data suggest that age-related impairment of stromal cells induces serious anemia in the elderly during inflammation.
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Affiliation(s)
- Kazuo Aisaki
- Department of Functional Morphology, Nihon University School of Medicine, Tokyo 173-8610, Japan
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Guikema JE, Gerstein RM, Linehan EK, Cloherty EK, Evan-Browning E, Tsuchimoto D, Nakabeppu Y, Schrader CE. Apurinic/apyrimidinic endonuclease 2 is necessary for normal B cell development and recovery of lymphoid progenitors after chemotherapeutic challenge. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2011; 186:1943-50. [PMID: 21228350 PMCID: PMC4041036 DOI: 10.4049/jimmunol.1002422] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
B cell development involves rapid cellular proliferation, gene rearrangements, selection, and differentiation, and it provides a powerful model to study DNA repair processes in vivo. Analysis of the contribution of the base excision repair pathway in lymphocyte development has been lacking primarily owing to the essential nature of this repair pathway. However, mice deficient for the base excision repair enzyme, apurinic/apyrimidinic endonuclease 2 (APE2) protein develop relatively normally, but they display defects in lymphopoiesis. In this study, we present an extensive analysis of bone marrow hematopoiesis in mice nullizygous for APE2 and find an inhibition of the pro-B to pre-B cell transition. We find that APE2 is not required for V(D)J recombination and that the turnover rate of APE2-deficient progenitor B cells is nearly normal. However, the production rate of pro- and pre-B cells is reduced due to a p53-dependent DNA damage response. FACS-purified progenitors from APE2-deficient mice differentiate normally in response to IL-7 in in vitro stromal cell cocultures, but pro-B cells show defective expansion. Interestingly, APE2-deficient mice show a delay in recovery of B lymphocyte progenitors following bone marrow depletion by 5-fluorouracil, with the pro-B and pre-B cell pools still markedly decreased 2 wk after a single treatment. Our data demonstrate that APE2 has an important role in providing protection from DNA damage during lymphoid development, which is independent from its ubiquitous and essential homolog APE1.
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Affiliation(s)
- Jeroen E.J. Guikema
- Department of Molecular Genetics and Microbiology, Program in Immunology and Virology, University of Massachusetts Medical School, Worcester, MA 01655
| | - Rachel M. Gerstein
- Department of Molecular Genetics and Microbiology, Program in Immunology and Virology, University of Massachusetts Medical School, Worcester, MA 01655
| | - Erin K. Linehan
- Department of Molecular Genetics and Microbiology, Program in Immunology and Virology, University of Massachusetts Medical School, Worcester, MA 01655
| | - Erin K. Cloherty
- Department of Molecular Genetics and Microbiology, Program in Immunology and Virology, University of Massachusetts Medical School, Worcester, MA 01655
| | - Eric Evan-Browning
- Department of Molecular Genetics and Microbiology, Program in Immunology and Virology, University of Massachusetts Medical School, Worcester, MA 01655
| | - Daisuke Tsuchimoto
- Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Yusaku Nakabeppu
- Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Carol E. Schrader
- Department of Molecular Genetics and Microbiology, Program in Immunology and Virology, University of Massachusetts Medical School, Worcester, MA 01655
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Hokari T, Tsuboi I, Harada T, Oshima H, Hirabayashi Y, Kanno J, Inoue T, Aizawa S. Mast Cell Development and Biostresses: Different Stromal Responses in Bone Marrow and Spleen after Treatment of Myeloablater, 5-Fluorouracil, and Inflammatory Stressor, Lipopolysaccharide. Biol Pharm Bull 2011; 34:1533-41. [DOI: 10.1248/bpb.34.1533] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Takeo Hokari
- Department of Functional Morphology, School of Medicine, Nihon University
| | - Isao Tsuboi
- Department of Functional Morphology, School of Medicine, Nihon University
| | - Tomonori Harada
- Department of Functional Morphology, School of Medicine, Nihon University
| | - Hideki Oshima
- Department of Functional Morphology, School of Medicine, Nihon University
| | - Yoko Hirabayashi
- Division of Cellular and Molecular Toxicology, Center for Biological Safety and Research, National Institute of Health Science
| | - Jun Kanno
- Division of Cellular and Molecular Toxicology, Center for Biological Safety and Research, National Institute of Health Science
| | - Tohru Inoue
- Department of Functional Morphology, School of Medicine, Nihon University
- Center for Biological Safety and Research, National Institute of Health Science
| | - Shin Aizawa
- Department of Functional Morphology, School of Medicine, Nihon University
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