1
|
Lin F, Zuo Y, Zhang Y, Cheng Y, Han T, Mo X, Suo P, Sun Y, Tang F, Wang F, Yan C, Chen Y, Han W, Wang J, Wang Y, Zhang X, Liu K, Huang X, Xu L. The impact of pretransplant serum ferritin on haploidentical hematopoietic stem cell transplant for acquired severe aplastic anemia in children and adolescents. Pediatr Blood Cancer 2022; 69:e29845. [PMID: 35731841 DOI: 10.1002/pbc.29845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 05/08/2022] [Accepted: 05/31/2022] [Indexed: 01/19/2023]
Abstract
Haploidentical hematopoietic stem cell transplant (haplo-HSCT) provides an important alternative for children and adolescents with acquired severe aplastic anemia (SAA) lacking matched donors. To test whether pretransplant serum ferritin (SF) represents a candidate predictor for survival and a potential biomarker for graft-versus-host disease (GvHD) in pediatric haplo-HSCT, we retrospectively evaluated 147 eligible patients with SAA who underwent haplo-HSCT. The patients were divided into the low-SF group (< 1000 ng/mL) and the high-SF group (≥ 1000 ng/mL). We found that SF ≥1000 ng/mL independently increased the risk of grade II-IV aGvHD (HR = 2.596; 95% CI, 1.304-5.167, P = 0.007) and grade III-IV aGvHD (HR = 3.350; 95% CI, 1.162-9.658, P = 0.025). Similar probabilities of transplant-related mortality at 100 days were observed in the two groups (6.19 ± 2.45% vs 8.00 ± 3.84%, P = 0.168). The two-year overall survival (85.29 ± 3.89% vs 92.00% ± 3.84%, P = 0.746) and failure-free survival (83.23% ± 4.08% vs 83.37% ± 6.27%, P = 0.915) were comparable. GvHD-/failure-free survival were 60.06 ± 5.10% and 75.56 ± 6.87%, respectively (P = 0.056). In conclusion, elevated pretransplant SF level is associated with higher incidences of grade II-IV aGvHD and grade III-IV aGvHD. However, it is not associated with worse survival after haplo-HSCT for children and adolescent patients with SAA.
Collapse
Affiliation(s)
- Fan Lin
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Yangyang Zuo
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Yuanyuan Zhang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Yifei Cheng
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Tingting Han
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Xiaodong Mo
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Pan Suo
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Yuqian Sun
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Feifei Tang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Fengrong Wang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Chenhua Yan
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Yuhong Chen
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Wei Han
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Jingzhi Wang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Yu Wang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Xiaohui Zhang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Kaiyan Liu
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| | - Xiaojun Huang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China.,Peking-Tsinghua Centre for Life Sciences, Beijing, China
| | - Lanping Xu
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Collaborative Innovation Center of Hematology, Beijing Key Laboratory of Haematopoietic Stem Cell Transplant, Beijing, China
| |
Collapse
|
2
|
Guo Y, Zhang X, Zeng W, Zhang J, Cai L, Wu Z, Su J, Xiao Y, Liu N, Tang L, Xu X, Chen X, Peng C. TRAF6 Activates Fibroblasts to Cancer-Associated Fibroblasts through FGF19 in Tumor Microenvironment to Benefit the Malignant Phenotype of Melanoma Cells. J Invest Dermatol 2020; 140:2268-2279.e11. [PMID: 32275977 DOI: 10.1016/j.jid.2020.03.950] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 01/10/2023]
Abstract
Cancer-associated fibroblasts (CAFs) are an important component of the tumor microenvironment and mediate tumor progression in various cancers. A previous study demonstrated that TRAF6 promotes the malignant phenotype of melanoma cells. However, the role of TRAF6 in melanoma CAFs remains unclear. In this study, we found that TRAF6 was significantly upregulated in CAFs adjacent to melanoma cells. Functional assays showed that TRAF6 promoted fibroblast proliferation and migration as well as MMP and α-SMA expression. Moreover, the expression of TRAF6 in fibroblasts promoted the malignant phenotype of melanoma cells in vitro and in vivo. Meanwhile, the intervention of TRAF6 expression in melanoma cells affected the activation of CAFs. We found that FGF19 was a key cytokine regulated by TRAF6 through NF-κB1 using luciferase assay and chromatin immunoprecipitation in melanoma cells. Because plasma FGF19 levels are elevated in patients with melanoma, it may significantly induce fibroblast activation in vitro and in vivo. Taken together, our results support that TRAF6 is a key molecule that mediates the interaction between melanoma cells and stromal fibroblasts, suggesting that TRAF6 is a potentially promising target in melanoma therapy.
Collapse
Affiliation(s)
- Yeye Guo
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xu Zhang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Weiqi Zeng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jianglin Zhang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lei Cai
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China; Department of Breast and Thyroid Surgery, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zeyu Wu
- Department of Urology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Juan Su
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yi Xiao
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Nian Liu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ling Tang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaowei Xu
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Cong Peng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Engineering Research Center of Skin Health And Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China.
| |
Collapse
|
3
|
Karoopongse E, Marcondes AM, Yeung C, Holman Z, Kowdley KV, Campbell JS, Deeg HJ. Disruption of Iron Regulation after Radiation and Donor Cell Infusion. Biol Blood Marrow Transplant 2016; 22:1173-1181. [PMID: 27060441 DOI: 10.1016/j.bbmt.2016.03.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 03/30/2016] [Indexed: 12/21/2022]
Abstract
Iron overload is common in patients undergoing hematopoietic cell transplantation (HCT). Peritransplant events, such as total body irradiation (TBI), and the effects of donor cell infusion may contribute to iron overload, in addition to disease-associated anemia and RBC transfusions. Using murine models we show complex time- and dose-dependent interactions of TBI and transplanted donor cells with expression patterns of iron regulatory genes in the liver. Infusion of allogeneic or syngeneic donor T lymphocytes increased serum iron, transiently up-regulated interleukin-6 (IL-6) and hepcidin (Hamp), and down-regulated ferroportin1 (Fpn1). After 7 to 14 days, however, changes were significant only with allogeneic cells. TBI (200 to 400 Gy) also induced IL-6 and Hamp expression but had little effect on Fpn1. TBI combined with allogeneic donor cell infusion resulted in modest early up-regulation of IL-6, followed by a decline in IL-6 levels and Hamp as well as Fpn1, and was accompanied by increased liver iron content. Injection of Fas ligand-deficient T lymphocytes from gld mice resulted in substantially lower alterations of gene expression than infusion of wild-type T cells. The agonistic anti-Fas antibody, JO2, triggered early up-regulation of Stat3 and IL-6, followed by an increase in Hamp and decreased expression of Fpn1 by 7 to 14 days, implicating Fas as a key modulator of gene expression in HCT. Minimal histologic changes were observed in mouse liver and duodenum. These data show profound and interacting effects of TBI and cell transplantation on the expression of iron regulatory genes in murine recipients. Alterations are largely related to induction of cytokines and Fas-dependent signals.
Collapse
Affiliation(s)
- Ekapun Karoopongse
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - A Mario Marcondes
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington
| | - Cecilia Yeung
- Department of Anatomic Pathology, University of Washington, Seattle, Washington
| | - Zaneta Holman
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Kris V Kowdley
- Liver Care Network and Organ Care Research, Swedish Medical Center, Seattle, Washington
| | - Jean S Campbell
- Icogenex Bioincubator R&D, OncoSec Medical, Seattle, Washington
| | - H Joachim Deeg
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington.
| |
Collapse
|
4
|
Li X, Xu F, Karoopongse E, Marcondes AM, Lee K, Kowdley KV, Miao CH, Trobridge GD, Campbell JS, Deeg HJ. Allogeneic transplantation, Fas signaling, and dysregulation of hepcidin. Biol Blood Marrow Transplant 2013; 19:1210-9. [PMID: 23707854 DOI: 10.1016/j.bbmt.2013.05.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 05/14/2013] [Indexed: 12/21/2022]
Abstract
Hepatic iron overload is common in patients undergoing hematopoietic cell transplantation. We showed previously in a murine model that transplantation of allogeneic T cells induced iron deposition and down-regulation of hepcidin (Hamp) in hepatocytes. We hypothesized that hepatic injury was related to disrupted iron homeostasis triggered by the interaction of Fas-ligand, expressed on activated T cells, with Fas on hepatocytes. In the current study, we determined the effects of modified expression of the Flice inhibitory protein (FLIP long [FLIPL]), which interferes with Fas signaling, on the impact of Fas-initiated signals on the expression of IL-6 and Stat3 and their downstream target, Hamp. To exclude a possible contribution by other pathways, we used agonistic anti-Fas antibodies (rather than allogeneic T cells) to trigger Fas signaling. Inhibition of FLIPL by RNA interference resulted, as expected, not only in enhanced hepatocyte apoptosis in response to Fas signals, but also in decreased levels of IL-6, Stat3, and Hamp. In contrast, overexpression of FLIPL protected hepatocytes against agonistic anti-Fas antibody-mediated apoptosis and increased the levels of IL-6 and Stat3, thereby maintaining the expression of Hamp in an NF-κB-dependent fashion. In vivo overexpression of FLIPL in the liver via hydrodynamic transfection, similarly, interfered with Fas-initiated apoptosis and prevented down-regulation of IL-6, Stat3, and Hamp. These data indicate that Fas-dependent signals alter the regulation of iron homeostasis and suggest that signals initiated by Fas may contribute to peritransplantation iron accumulation.
Collapse
Affiliation(s)
- Xiang Li
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
A simple method for large-scale purification of plasma-derived apo-transferrin. Biotechnol Appl Biochem 2011; 57:87-95. [DOI: 10.1042/ba20100156] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
6
|
Deeg HJ, Spaulding E, Shulman HM. Iron overload, hematopoietic cell transplantation, and graft-versus-host disease. Leuk Lymphoma 2009; 50:1566-72. [PMID: 19863335 PMCID: PMC2887728 DOI: 10.1080/10428190903144659] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Many patients who undergo hematopoietic cell transplantation (HCT) present with anemia and have received red blood cell transfusions before HCT. As a result, iron overload is frequent and appears to be particularly prominent in patients with myelodysplastic syndromes. There is evidence that peritransplant events contribute to further iron accumulation, although the mechanism that disrupts normal iron homeostasis remains to be determined. Recent studies suggest that iron overload, as determined by ferritin levels, a surrogate marker for iron, is a risk factor for increased non-relapse mortality after HCT. Iron overload is associated with an increased rate of infections, in particular with fungal organisms. Furthermore anecdotal data suggest that increased hepatic iron may mimic the clinical picture of (chronic) graft-versus-host-disease (GVHD). Whether excess iron contributes to GVHD and whether iron depletion, be it by phlebotomy or chelation, reduces the post-transplantation complication rate and improves transplant outcome is yet to be determined.
Collapse
Affiliation(s)
- H Joachim Deeg
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109-1024, USA.
| | | | | |
Collapse
|
7
|
Abstract
Iron overload is common in patients undergoing allogeneic hematopoietic cell transplantation (HCT), but the mechanisms leading to overload are unknown. Here, we determined iron levels and the expression of iron regulatory proteins in the liver and gut of nonobese diabetic-severe combined immunodeficient (NOD/SCID) mice that underwent transplantation with syngeneic (histocompatible) or allogeneic (histoincompatible) T lymphocytes. Infusion of histoincompatible T cells resulted in a significant rise in serum iron levels and liver iron content. Iron deposition was accompanied by hepatocyte injury and intestinal villous damage. Feeding of low- or high-iron diet was associated with appropriate ferroportin 1 and hepcidin responses in mice given histocompatible T cells, whereas mice given histoincompatible T cells showed inappropriate up-regulation of duodenal ferroportin 1 and a loss of expression of hepatic hepcidin. These findings suggest that alloreactive T cell-dependent signals induced dysregulation of intestinal iron absorption, which contributed to liver iron overload after HCT.
Collapse
|
8
|
Lesnikov V, Gorden N, Fausto N, Spaulding E, Campbell J, Shulman H, Fleming RE, Deeg HJ. Transferrin fails to provide protection against Fas-induced hepatic injury in mice with deletion of functional transferrin-receptor type 2. Apoptosis 2008; 13:1005-12. [PMID: 18561026 DOI: 10.1007/s10495-008-0233-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We reported previously that Fas-induced hepatic failure in normal mice was attenuated or prevented by exogenous transferrin (Tf), particularly apoTf. Here we show in C57BL6J/129 mice with genetic inactivation of transferrin receptor 2 (TfR2(Y245X)), that Fas-induced hepatotoxicity (apoptosis; rise in plasma aspartate aminotransferase (AST) levels) was comparable to that in wild-type mice, but was not modified by pretreatment with Tf. Rises in plasma AST were preceded by a decline in serum iron levels. AST elevations and iron declines were more profound in female than in male mice. Female mice also showed higher baseline levels of Bcl-xL in hepatocytes, which declined significantly upon treatment with agonistic anti-Fas antibody. These data confirm the cytoprotective function of Tf, and show a novel property of TfR2. Both apoptotic Fas responses and cytoprotective effects of Tf were associated with significant shifts in plasma iron levels, which quantitatively differed between male and female mice.
Collapse
Affiliation(s)
- Vladimir Lesnikov
- Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, D1-100, P.O. Box 19024, Seattle, WA 98109-1024, USA
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Lesnikov VA, Abbasi N, Lesnikova MP, Lazaro CA, Campbell JS, Fausto N, Deeg HJ. Protection of human and murine hepatocytes against Fas-induced death by transferrin and iron. Apoptosis 2007; 11:79-87. [PMID: 16374550 DOI: 10.1007/s10495-005-3086-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Recent studies in a murine model show that transferrin (Tf) interferes with Fas-mediated hepatocyte death and liver failure by decreasing pro-apoptotic and increasing anti-apoptotic signals. We show here in vitro in murine and human hepatocyte cell lines and in vivo in mice that Fas-induced apoptosis is modulated by exogenous Tf and iron. The results obtained with iron-free Tf (ApoTf), iron-saturated Tf (FeTf), and the iron chelator salicylaldehyde isonicotinoyl hydrazone (SIH) in its iron-free and iron-saturated (FeSIH) forms indicate that apoptosis-modulating effects of Tf are not mediated by iron alone. Both the Tf molecule and iron affect multiple aspects of cell death, and the route of iron delivery to the cell may be critical for the final outcome of cellular Fas signaling. Survival of hepatocytes 'stressed' by Fas signals can be manipulated by Tf and iron and may be a target for prophylactic and therapeutic interventions.
Collapse
Affiliation(s)
- V A Lesnikov
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109-1024, USA.
| | | | | | | | | | | | | |
Collapse
|
10
|
Chae JI, Cho SK, Seo JW, Yoon TS, Lee KS, Kim JH, Lee KK, Han YM, Yu K. Proteomic Analysis of the Extraembryonic Tissue from Cloned Porcine Embryos. Mol Cell Proteomics 2006; 5:1559-66. [PMID: 16815948 DOI: 10.1074/mcp.m500427-mcp200] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cloned animals developed from somatic cell nuclear transfer (SCNT) embryos are useful resources for agricultural and medical applications. However, the birth rate in the cloned animals is very low, and the cloned animals that have survived show various developmental defects. In this report, we present the morphology and differentially regulated proteins in the extraembryonic tissue from SCNT embryos to understand the molecular nature of the tissue. We examined 26-day-old SCNT porcine embryos at which the sonogram can first detect pregnancy. The extraembryonic tissue from SCNT embryos was abnormally small compared with the control. In the proteomic analysis with the SCNT extraembryonic tissue, 39 proteins were identified as differentially regulated proteins. Among up-regulated proteins, Annexins and Hsp27 were found. They are closely related to the processes of apoptosis. Among down-regulated proteins, Peroxiredoxins and anaerobic glycolytic enzymes were identified. In the Western blot analysis, antioxidant enzymes and the antiapoptotic Bcl-2 protein were down-regulated, and caspases were up-regulated. In the terminal deoxynucleotidyltransferase-mediated dUTP nick end labeling (TUNEL) assay with the placenta from SCNT embryos, apoptotic trophoblasts were observed. These results demonstrate that a major reason for the low birth rate of cloned animals is due to abnormal apoptosis in the extraembryonic tissue during early pregnancy.
Collapse
Affiliation(s)
- Jung-Il Chae
- Centre for Development and Differentiation, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 305-333, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Parkkinen J, Sahlstedt L, von Bonsdorff L, Salo H, Ebeling F, Ruutu T. Effect of repeated apotransferrin administrations on serum iron parameters in patients undergoing myeloablative conditioning and allogeneic stem cell transplantation. Br J Haematol 2006; 135:228-34. [PMID: 16925790 DOI: 10.1111/j.1365-2141.2006.06273.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Myeloablative conditioning prior to allogeneic stem cell transplantation causes a rapid increase in transferrin saturation and potentially toxic non-transferrin-bound iron (NTBI) in plasma. We have studied the ability of repeatedly administered apotransferrin to maintain this iron in a transferrin-bound form. Twenty adult patients undergoing myeloablative conditioning and allogeneic stem cell transplantation were enrolled to receive apotransferrin with one of three dosage regimens. Ten consecutive patients with the same preconditioning were studied as controls. At the highest dose level, full transferrin saturation and appearance of NTBI were prevented in five of the eight patients. Serum iron increased significantly more in the patients receiving apotransferrin than in the controls and remained elevated until erythropoietic recovery. From the increment of iron saturation and the amount of endogenous and administered apotransferrin, an average 180 mumol of iron per day was bound to transferrin during the first 4 d after the start of the conditioning therapy. Thereafter, iron accumulation levelled off in most patients. The results suggested that about half of the amount of iron normally transported to erythropoiesis was initially released to plasma after induction of the erythroid arrest. Complete iron binding with apotransferrin would apparently require very high apotransferrin doses.
Collapse
|
12
|
Ong ST, Ho JZS, Ho B, Ding JL. Iron-withholding strategy in innate immunity. Immunobiology 2006; 211:295-314. [PMID: 16697921 DOI: 10.1016/j.imbio.2006.02.004] [Citation(s) in RCA: 185] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2006] [Accepted: 02/14/2006] [Indexed: 10/24/2022]
Abstract
The knowledge of how organisms fight infections has largely been built upon the ability of host innate immune molecules to recognize microbial determinants. Although of overwhelming importance, pathogen recognition is but only one of the facets of innate immunity. A primitive yet effective antimicrobial mechanism which operates by depriving microbial organisms of their nutrients has been brought into the forefront of innate immunity once again. Such a tactic is commonly referred to as the iron-withholding strategy of innate immunity. In this review, we introduce various vertebrate iron-binding proteins and their invertebrate homologues, so as to impress upon readers an obscured arm of innate immune defense. An excellent comprehension of the mechanics of innate immunity paves the way for the possibility that novel antimicrobial therapeutics may emerge one day to overcome the prevalent antibiotic resistance in bacteria.
Collapse
Affiliation(s)
- Sek Tong Ong
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543
| | | | | | | |
Collapse
|
13
|
Gomme PT, McCann KB, Bertolini J. Transferrin: structure, function and potential therapeutic actions. Drug Discov Today 2005; 10:267-73. [PMID: 15708745 DOI: 10.1016/s1359-6446(04)03333-1] [Citation(s) in RCA: 307] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
There are many proteins that can multi-task. Transferrin, widely known as an iron-binding protein, is one such example of a multi-tasking protein. In this review, the multiple biological actions of transferrin, including its growth and cytoprotective activities, are discussed with the view of highlighting the potential therapeutic applications of this protein.
Collapse
Affiliation(s)
- Peter T Gomme
- Research and Development, CSL Ltd., Bioplasma Division, 189-209 Camp Road, Broadmeadows, Victoria 3047, Australia.
| | | | | |
Collapse
|