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Guan B, Li D, Meng A. Development of radiation countermeasure agents for acute radiation syndromes. Animal Model Exp Med 2023; 6:329-336. [PMID: 37642199 PMCID: PMC10486342 DOI: 10.1002/ame2.12339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 07/18/2023] [Indexed: 08/31/2023] Open
Abstract
The risk of internal and external exposure to ionizing radiation (IR) has increased alongside the development and implementation of nuclear technology. Therefore, serious security issues have emerged globally, and there has been an increase in the number of studies focusing on radiological prevention and medical countermeasures. Radioprotective drugs are particularly important components of emergency medical preparedness strategies for the clinical management of IR-induced injuries. However, a few drugs have been approved to date to treat such injuries, and the related mechanisms are not entirely understood. Thus, the aim of the present review was to provide a brief overview of the World Health Organization's updated list of essential medicines for 2023 for the proper management of national stockpiles and the treatment of radiological emergencies. This review also discusses the types of radiation-induced health injuries and the related mechanisms, as well as the development of various radioprotective agents, including Chinese herbal medicines, for which significant survival benefits have been demonstrated in animal models of acute radiation syndrome.
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Affiliation(s)
- Bowen Guan
- National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical DiseasesInstitute of Laboratory Animal Sciences Chinese Academy of Medical Sciences (CAMS), Peking Union Medical College (PUMC), National Center of Technology Innovation for Animal ModelBeijingChina
| | - Deguan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear MedicineInstitute of Radiation Medicine, Chinese Academy of Medical Science, Peking Union Medical CollegeTianjinChina
| | - Aimin Meng
- National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical DiseasesInstitute of Laboratory Animal Sciences Chinese Academy of Medical Sciences (CAMS), Peking Union Medical College (PUMC), National Center of Technology Innovation for Animal ModelBeijingChina
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2
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Sun Y, Guan B, Liu X, Zhang L, Wang X, Meng A, Gao R. Screening for urinary markers predicting hematopoietic stem cell injury induced by busulfan using genetically diverse mice. Animal Model Exp Med 2023; 6:146-154. [PMID: 37062934 PMCID: PMC10158946 DOI: 10.1002/ame2.12320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 03/23/2023] [Indexed: 04/18/2023] Open
Abstract
BACKGROUND Busulfan (BU) is an alkylating agent used as a conditioning agent prior to hematopoietic stem cell (HSC) transplantation as it is known to be cytotoxic to host hematopoietic stem and progenitor cells. The susceptibility of HSCs to BU injury plays an important role in the myeloablative efficacy of BU. Different susceptibilities were demonstrated in genetically diverse (GD) mice in our preliminary research. METHODS Three strains of GD mice with different susceptibilities to BU-induced HSC injury were used for screening biological markers of HSC injury susceptibility in urine. The urine proteins were analyzed using liquid chromatography coupled with tandem mass spectrometry to screen for differentially expressed proteins. Screening for possible biomarkers based on differences in protein expression abundance was validated using enzyme-linked immunoassay (ELISA). RESULTS Functional analysis showed that the differential proteins were all involved in a series of biological pathways related to cellular senescence, apoptosis, and angiogenesis; whereas the differential proteins of the high-susceptible strain were enriched for the regulation of bone marrow microenvironment pathways, those of low-susceptible strain were enriched for the proapoptotic effect of GTPase pathways. Based on protein abundance differences, several urinary proteins that may be indicative of susceptibility were screened, and ELISA validation results showed that angiotensin-converting enzyme may be a potential biomarker predicting HSC susceptibility for BU conditioning. CONCLUSIONS This study indicates that urinary protein levels can reflect differences in susceptibility to BU-induced HSC injury. Using GD mice to construct genetic difference models will provide preclinical data for screening BU-related biological markers.
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Affiliation(s)
- Yuhang Sun
- National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Sciences Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), National Center of Technology Innovation for Animal Model, Beijing, China
| | - Bowen Guan
- National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Sciences Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), National Center of Technology Innovation for Animal Model, Beijing, China
| | - Xing Liu
- National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Sciences Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), National Center of Technology Innovation for Animal Model, Beijing, China
| | - Lingyan Zhang
- National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Sciences Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), National Center of Technology Innovation for Animal Model, Beijing, China
| | - Xinpei Wang
- National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Sciences Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), National Center of Technology Innovation for Animal Model, Beijing, China
| | - Aimin Meng
- National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Sciences Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), National Center of Technology Innovation for Animal Model, Beijing, China
| | - Ran Gao
- National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Sciences Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), National Center of Technology Innovation for Animal Model, Beijing, China
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3
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Dong Y, Zhang Y, Wang X, Li W, Zhang J, Lu L, Dong H, Fan S, Meng A, Li D. The protective effects of Xuebijing injection on intestinal injuries of mice exposed to irradiation. Animal Model Exp Med 2022; 5:565-574. [PMID: 36376997 PMCID: PMC9773304 DOI: 10.1002/ame2.12285] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 10/06/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Gastrointestinal (GI) injury is one of the most common side effects of radiotherapy. However, there is no ideal therapy method except for symptomatic treatment in the clinic. Xuebijing (XBJ) is a traditional Chinese medicine, used to treat sepsis by injection. In this study, the protective effects of XBJ on radiation-induced intestinal injury (RIII) and its mechanism were explored. METHODS The effect of XBJ on survival of irradiated C57BL/6 mice was monitored. Histological changes including the number of crypts and the length of villi were evaluated by H&E. The expression of Lgr5+ intestinal stem cells (ISCs), Ki67+ cells, villin and lysozymes were examined by immunohistochemistry. The expression of cytokines in the intestinal crypt was detected by RT-PCR. DNA damage and apoptosis rates in the small intestine were also evaluated by immunofluorescence. RESULTS In the present study, XBJ improved the survival rate of the mice after 8.0 and 9.0 Gy total body irradiation (TBI). XBJ attenuated structural damage of the small intestine, maintained regenerative ability and promoted proliferation and differentiation of crypt cells, decreased apoptosis rate and reduced DNA damage in the intestine. Elevation of IL-6 and TNF-α was limited, but IL-1, TNF-𝛽 and IL-10 levels were increased in XBJ-treated group after irradiation. The expression of Bax and p53 were decreased after XBJ treatment. CONCLUSIONS Taken together, XBJ provides a protective effect on RIII by inhibiting inflammation and blocking p53-related apoptosis pathway.
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Affiliation(s)
- Yinping Dong
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation MedicineChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
| | - YuanYang Zhang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation MedicineChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
| | - Xinyue Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation MedicineChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
| | - Wenxuan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation MedicineChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
| | - Junling Zhang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation MedicineChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
| | - Lu Lu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation MedicineChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
| | - Hui Dong
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation MedicineChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
| | - Saijun Fan
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation MedicineChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
| | - Aimin Meng
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Engineering Research Center for Laboratory Animal Models of Human Critical Diseases, National Human Diseases Animal Model Resource Center, Institute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC)BeijingChina
| | - Deguan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation MedicineChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
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Yang Y, Guan B, Wei Q, Wang W, Meng A. Morphine analgesia in male inbred genetic diversity mice recapitulates the among-individual variance in response to morphine in humans. Animal Model Exp Med 2022; 5:288-296. [PMID: 35656737 PMCID: PMC9240740 DOI: 10.1002/ame2.12234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 05/03/2022] [Indexed: 12/01/2022] Open
Abstract
Morphine is a widely used analgesic, but its use in clinical precision medicine is limited by the variance in response among individuals. Although previous studies have shown that individual differences in morphine can be explained in terms of pharmacodynamics and pharmacokinetics, genetic polymorphisms also play an important role. However, the genetic basis of different sensitivity and tolerance susceptibility to morphine remains ambiguous. Using 15 strains of inbred Genetic Diversity (GD) mice, a new resource with wide genetic and phenotypic variation, we demonstrated great variance in sensitivity to morphine analgesia and susceptibility to morphine tolerance between different GD strains. Among-individual variance in response to morphine analgesia in the population can be modeled in GD mice. Two loci respectively may be associated with the among-individual variance in morphine sensitivity and tolerance, confirming the role of genetic factors in among-individual different responses to morphine. These results indicate that GD mice may be a potential tool for the identification of new biomarkers to improve the clinical administration of morphine.
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Affiliation(s)
- Yin Yang
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Engineering Research Center for Laboratory Animal Models of Human Critical Diseases, Institute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC)BeijingChina
- Department of Physiology and Neurobiology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Bowen Guan
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Engineering Research Center for Laboratory Animal Models of Human Critical Diseases, Institute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC)BeijingChina
| | - Qiang Wei
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Engineering Research Center for Laboratory Animal Models of Human Critical Diseases, Institute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC)BeijingChina
| | - Wei Wang
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Engineering Research Center for Laboratory Animal Models of Human Critical Diseases, Institute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC)BeijingChina
| | - Aimin Meng
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Engineering Research Center for Laboratory Animal Models of Human Critical Diseases, Institute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC)BeijingChina
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Su L, Dong Y, Wang Y, Wang Y, Guan B, Lu Y, Wu J, Wang X, Li D, Meng A, Fan F. Potential role of senescent macrophages in radiation-induced pulmonary fibrosis. Cell Death Dis 2021; 12:527. [PMID: 34023858 PMCID: PMC8141056 DOI: 10.1038/s41419-021-03811-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 02/07/2023]
Abstract
Radiation-induced pulmonary fibrosis (RIPF) is a late toxicity of therapeutic radiation in clinic with poor prognosis and limited therapeutic options. Previous results have shown that senescent cells, such as fibroblast and type II airway epithelial cell, are strongly implicated in pathology of RIPF. However, the role of senescent macrophages in the development RIPF is still unknown. In this study, we report that ionizing radiation (IR) increase cellular senescence with higher expression of senescence-associated β-galactosidase (SA-β-Gal) and senescence-specific genes (p16, p21, Bcl-2, and Bcl-xl) in irradiated bone marrow-derived monocytes/macrophages (BMMs). Besides, there’s a significant increase in the expression of pro-fibrogenic factors (TGF-β1 and Arg-1), senescence-associated secretory phenotype (SASP) proinflammatory factors (Il-1α, Il-6, and Tnf-α), SASP chemokines (Ccl2, Cxcl10, and Ccl17), and SASP matrix metalloproteinases (Mmp2, Mmp9 and Mmp12) in BMMs exposed to 10 Gy IR. In addition, the percentages of SA-β-Gal+ senescent macrophages are significantly increased in the macrophages of murine irradiated lung tissue. Moreover, robustly elevated expression of p16, SASP chemokines (Ccl2, Cxcl10, and Ccl17) and SASP matrix metalloproteinases (Mmp2, Mmp9, and Mmp12) is observed in the macrophages of irradiated lung, which might stimulate a fibrotic phenotype in pulmonary fibroblasts. In summary, irradiation can induce macrophage senescence, and increase the secretion of SASP in senescent macrophages. Our findings provide important evidence that senescent macrophages might be the target for prevention and treatment of RIPF.
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Affiliation(s)
- Lulu Su
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences, 100021, Beijing, China.,NHC Key Laboratory of Human Disease Comparative Medicine, Comparative Medicine Center, Peking Union Medical College, 100021, Beijing, China
| | - Yinping Dong
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, 300192, Tianjin, China
| | - Yueying Wang
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, 300192, Tianjin, China
| | - Yuquan Wang
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences, 100021, Beijing, China.,NHC Key Laboratory of Human Disease Comparative Medicine, Comparative Medicine Center, Peking Union Medical College, 100021, Beijing, China
| | - Bowen Guan
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences, 100021, Beijing, China.,NHC Key Laboratory of Human Disease Comparative Medicine, Comparative Medicine Center, Peking Union Medical College, 100021, Beijing, China
| | - Yanhua Lu
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences, 100021, Beijing, China.,NHC Key Laboratory of Human Disease Comparative Medicine, Comparative Medicine Center, Peking Union Medical College, 100021, Beijing, China
| | - Jing Wu
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, 300192, Tianjin, China
| | - Xiaochun Wang
- The Beijing Prevention and Treatment Hospital of Occupational Disease for Chemical Industry, Beijing Institute of Occupational Disease Prevention and Treatment, 100093, Beijing, China
| | - Deguan Li
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, 300192, Tianjin, China.
| | - Aimin Meng
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences, 100021, Beijing, China. .,NHC Key Laboratory of Human Disease Comparative Medicine, Comparative Medicine Center, Peking Union Medical College, 100021, Beijing, China.
| | - Feiyue Fan
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences, 100021, Beijing, China. .,NHC Key Laboratory of Human Disease Comparative Medicine, Comparative Medicine Center, Peking Union Medical College, 100021, Beijing, China.
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6
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Pan J, Li D, Xu Y, Zhang J, Wang Y, Chen M, Lin S, Huang L, Chung EJ, Citrin DE, Wang Y, Hauer-Jensen M, Zhou D, Meng A. Inhibition of Bcl-2/xl With ABT-263 Selectively Kills Senescent Type II Pneumocytes and Reverses Persistent Pulmonary Fibrosis Induced by Ionizing Radiation in Mice. Int J Radiat Oncol Biol Phys 2017; 99:353-361. [PMID: 28479002 DOI: 10.1016/j.ijrobp.2017.02.216] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 02/14/2017] [Accepted: 02/23/2017] [Indexed: 12/20/2022]
Abstract
PURPOSE Ionizing radiation (IR)-induced pulmonary fibrosis (PF) is an irreversible and severe late effect of thoracic radiation therapy. The goal of this study was to determine whether clearance of senescent cells with ABT-263, a senolytic drug that can selectively kill senescent cells, can reverse PF. METHODS AND MATERIALS C57BL/6J mice were exposed to a single dose of 17 Gy on the right side of the thorax. Sixteen weeks after IR, they were treated with 2 cycles of vehicle or ABT-263 (50 mg/kg per day for 5 days per cycle) by gavage. The effects of ABT-263 on IR-induced increases in senescent cells; elevation in the expression of selective inflammatory cytokines, matrix metalloproteinases, and tissue inhibitors of matrix metalloproteinases; and the severity of the tissue injury and fibrosis in the irradiated lungs were evaluated 3 weeks after the last treatment, in comparison with the changes observed in the irradiated lungs before treatment or after vehicle treatment. RESULTS At 16 weeks after exposure of C57BL/6 mice to a single dose of 17 Gy, thoracic irradiation resulted in persistent PF associated with a significant increase in senescent cells. Treatment of the irradiated mice with ABT-263 after persistent PF had developed reduced senescent cells and reversed the disease. CONCLUSIONS To our knowledge, this is the first study to demonstrate that PF can be reversed by a senolytic drug such as ABT-263 after it becomes a progressive disease. Therefore, ABT-263 has the potential to be developed as a new treatment for PF.
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Affiliation(s)
- Jin Pan
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Deguan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin, China
| | - Yanfeng Xu
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Junling Zhang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin, China
| | - Yueying Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin, China
| | - Mengyi Chen
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Shuai Lin
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Lan Huang
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Eun Joo Chung
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Deborah E Citrin
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Yingying Wang
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Martin Hauer-Jensen
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Daohong Zhou
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
| | - Aimin Meng
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
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7
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Zhang J, Han X, Huang S, Lu L, Li D, Meng A. The combined effect of resveratrol and diphenyleneiodonium on irradiation-induced injury to the hematopoietic system. Int Immunopharmacol 2016; 43:33-39. [PMID: 27939823 DOI: 10.1016/j.intimp.2016.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 09/14/2016] [Revised: 12/01/2016] [Accepted: 12/01/2016] [Indexed: 10/20/2022]
Abstract
Both resveratrol(Res) and diphenyleneiodonium(DPI) have been shown to have radioprotective effects on hematopoietic system injury. However, the cooperative effect of Res and DPI are unknown. In this study, we explored the radioprotective effect of the combination of Res and DPI both in vitro and in vivo. Our results showed that the combined treatment of Res and DPI was more effective in protecting irradiated BMMNCs in terms of cell viability, colony-forming ability, and reconstitution ability in vitro compared with Res or DPI treatment alone. However, in mice, the combination of Res and DPI had no enhanced protection on 4Gy total body irradiation (TBI)-induced hematopoietic system injury, including TBI-induced myelosuppression, induction of the splenic index, and increases in HSC/HPC numbers and the colony-forming ability of BMCs,compared to Res or DPI alone. An exception was the number of BMCs. These studies illustrated the inconsistency between experiments carried out in vitro and in vivo and suggest an interaction between Res or DPI in vivo.
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Affiliation(s)
- Junling Zhang
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Science, Tianjin 300192, China
| | - Xiaodan Han
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Science, Tianjin 300192, China
| | - Song Huang
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Science, Tianjin 300192, China
| | - Lu Lu
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Science, Tianjin 300192, China
| | - Deguan Li
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Science, Tianjin 300192, China
| | - Aimin Meng
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Science, Tianjin 300192, China; Institute of Laboratory Animal Science, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100021, China.
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Zhang J, Xue X, Han X, Yao C, Lu L, Li D, Hou Q, Miao W, Meng A, Fan S. Vam3 ameliorates total body irradiation-induced hematopoietic system injury partly by regulating the expression of Nrf2-targeted genes. Free Radic Biol Med 2016; 101:455-464. [PMID: 27989754 DOI: 10.1016/j.freeradbiomed.2016.10.501] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 09/13/2016] [Accepted: 10/26/2016] [Indexed: 12/26/2022]
Abstract
Vam3, a resveratrol dimer, has been implicated in the regulation of chronic obstructive pulmonary disease. However, the effect of Vam3 on total body irradiation (TBI)-induced hematopoietic progenitor cells (HPCs), and hematopoietic stem cells (HSCs) injury is unknown. In this study, we examined whether Vam3could ameliorate hematopoietic system injury induced by TBI. Our results indicated that Vam3 alleviated TBI-induced injury by improving the self-renewal and differentiation of HPCs, and HSCs. Vam3 decreased the intracellular ROS levels in irradiated mice HPCs/HSCs or c-kit positive cells and inhibited apoptosis and DNA damage in LSKs and HPCs after TBI. Vam3 up-regulated the expression of Nrf2 and related genes and proteins in irradiated c-kit positive cells in vitro. However, Vam3 did not increase the cell viability or the number of CFU-GM c-kit positive cells in irradiated Nrf2-/- mice but decreased the cellular ROS level. The above data showed that Vam3 ameliorates total body irradiation-induced hematopoietic system injury and that Nrf2 is essential in mediating Vam3's protective effect on the proliferation of c-kit positive cells after irradiation but not its ability to scavenge for free radicals.
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Affiliation(s)
- Junling Zhang
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, China
| | - Xiaolei Xue
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, China
| | - Xiaodan Han
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, China
| | - Chunsuo Yao
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Lu Lu
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, China
| | - Deguan Li
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, China
| | - Qi Hou
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Weimin Miao
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300041, China
| | - Aimin Meng
- Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Science, Beijing 100021, China.
| | - Saijun Fan
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, China.
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Wang Y, Chang J, Shao L, Feng W, Luo Y, Chow M, Du W, Meng A, Zhou D. Hematopoietic Stem Cells from Ts65Dn Mice Are Deficient in the Repair of DNA Double-Strand Breaks. Radiat Res 2016; 185:630-7. [PMID: 27243896 DOI: 10.1667/rr14407.1] [Citation(s) in RCA: 10] [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: 11/03/2022]
Abstract
Down syndrome (DS) is a genetic disorder caused by the presence of an extra partial or whole copy of chromosome 21. In addition to musculoskeletal and neurodevelopmental abnormalities, children with DS exhibit various hematologic disorders and have an increased risk of developing acute lymphoblastic leukemia and acute megakaryocytic leukemia. Using the Ts65Dn mouse model, we investigated bone marrow defects caused by trisomy for 132 orthologs of the genes on human chromosome 21. The results showed that, although the total bone marrow cellularity as well as the frequency of hematopoietic progenitor cells (HPCs) was comparable between Ts65Dn mice and their age-matched euploid wild-type (WT) control littermates, human chromosome 21 trisomy led to a significant reduction in hematopoietic stem cell (HSC) numbers and clonogenic function in Ts65Dn mice. We also found that spontaneous DNA double-strand breaks (DSBs) were significantly increased in HSCs from the Ts65Dn mice, which was correlated with the significant reduction in HSC clonogenic activity compared to those from WT controls. Moreover, analysis of the repair kinetics of radiation-induced DSBs revealed that HSCs from Ts65Dn mice were less proficient in DSB repair than the cells from WT controls. This deficiency was associated with a higher sensitivity of Ts65Dn HSCs to radiation-induced suppression of HSC clonogenic activity than that of euploid HSCs. These findings suggest that an additional copy of genes on human chromosome 21 may selectively impair the ability of HSCs to repair DSBs, which may contribute to DS-associated hematological abnormalities and malignancies.
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Affiliation(s)
- Yingying Wang
- a Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical Collage, Tianjin 300192, China; and.,b Division of Radiation Health, Department of Pharmaceutical Sciences and
| | - Jianhui Chang
- b Division of Radiation Health, Department of Pharmaceutical Sciences and
| | - Lijian Shao
- b Division of Radiation Health, Department of Pharmaceutical Sciences and
| | - Wei Feng
- b Division of Radiation Health, Department of Pharmaceutical Sciences and
| | - Yi Luo
- b Division of Radiation Health, Department of Pharmaceutical Sciences and
| | - Marie Chow
- c Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205
| | - Wei Du
- b Division of Radiation Health, Department of Pharmaceutical Sciences and
| | - Aimin Meng
- a Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical Collage, Tianjin 300192, China; and
| | - Daohong Zhou
- b Division of Radiation Health, Department of Pharmaceutical Sciences and
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Li C, Lu L, Zhang J, Huang S, Xing Y, Zhao M, Zhou D, Li D, Meng A. Granulocyte colony-stimulating factor exacerbates hematopoietic stem cell injury after irradiation. Cell Biosci 2015; 5:65. [PMID: 26609358 PMCID: PMC4659162 DOI: 10.1186/s13578-015-0057-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 11/12/2015] [Indexed: 12/11/2022] Open
Abstract
Background Exposure to a moderate to high dose of ionizing radiation (IR) not only causes acute radiation syndrome but also induces long-term (LT) bone marrow (BM) injury. The latter effect of IR is primarily attributed to the induction of hematopoietic stem cell (HSC) senescence. Granulocyte colony-stimulating factor (G-CSF) is the only treatment recommended to be given to radiation victims soon after IR. However, clinical studies have shown that G-CSF used to treat the leukopenia induced by radiotherapy or chemotherapy in patients can cause sustained low white blood cell counts in peripheral blood. It has been suggested that this adverse effect is caused by HSC and hematopoietic progenitor cell (HPC) proliferation and differentiation stimulated by G-CSF, which impairs HSC self-renewal and may exhaust the BM capacity to exacerbate IR-induced LT-BM injury. Methods C57BL/6 mice were exposed to 4 Gy γ-rays of total body irradiation (TBI) at a dose-rate of 1.08 Gy per minute, and the mice were treated with G-CSF (1 μg/each by ip) or vehicle at 2 and 6 h after TBI on the first day and then twice every day for 6 days. All mice were killed one month after TBI for analysis of peripheral blood cell counts, bone marrow cellularity and long-term HSC (CD34-lineage-sca1+c-kit+) frequency. The colony-forming unit-granulocyte and macrophage (CFU-GM) ability of HPC was measured by colony-forming cell (CFC) assay, and the HSC self-renewal capacity was analyzed by BM transplantation. The levels of ROS production, the expression of phospho-p38 mitogen-activated protein kinase (p-p38) and p16INK4a (p16) mRNA in HSCs were measured by flow cytometry and RT-PCR, respectively. Results The results of our studies show that G-CSF administration mitigated TBI-induced decreases in WBC and the suppression of HPC function (CFU-GM) (p < 0.05), whereas G-CSF exacerbated the suppression of long-term HSC engraftment after transplantation one month after TBI (p < 0.05); The increase in HSC damage was associated with increased ROS production, activation of p38 mitogen-activated protein kinase (p38), induction of senescence in HSCs. Conclusion Our findings suggest that although G-CSF administration can reduce ARS, it can also exacerbate TBI-induced LT-BM injury in part by promoting HSC senescence via the ROS-p38-p16 pathway.
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Affiliation(s)
- Chengcheng Li
- Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China ; Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Lu Lu
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Junling Zhang
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Song Huang
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Yonghua Xing
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Mingfeng Zhao
- The First Central Clinical College of Tianjin Medical University, Tianjin First Central Hospital, Tianjin, China
| | - Daohong Zhou
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, USA
| | - Deguan Li
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Aimin Meng
- Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China ; Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
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Xing Y, Zhang J, Lu L, Li D, Wang Y, Huang S, Li C, Zhang Z, Li J, Meng A. Identification of hub genes of pneumocyte senescence induced by thoracic irradiation using weighted gene co‑expression network analysis. Mol Med Rep 2015; 13:107-16. [PMID: 26572216 PMCID: PMC4686054 DOI: 10.3892/mmr.2015.4566] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 10/14/2015] [Indexed: 01/03/2023] Open
Abstract
Irradiation commonly causes pneumocyte senescence, which may lead to severe fatal lung injury characterized by pulmonary dysfunction and respiratory failure. However, the molecular mechanism underlying the induction of pneumocyte senescence by irradiation remains to be elucidated. In the present study, weighted gene co-expression network analysis (WGCNA) was used to screen for differentially expressed genes, and to identify the hub genes and gene modules, which may be critical for senescence. A total of 2,916 differentially expressed genes were identified between the senescence and non-senescence groups following thoracic irradiation. In total, 10 gene modules associated with cell senescence were detected, and six hub genes were identified, including B-cell scaffold protein with ankyrin repeats 1, translocase of outer mitochondrial membrane 70 homolog A, actin filament-associated protein 1, Cd84, Nuf2 and nuclear factor erythroid 2. These genes were markedly associated with cell proliferation, cell division and cell cycle arrest. The results of the present study demonstrated that WGCNA of microarray data may provide further insight into the molecular mechanism underlying pneumocyte senescence.
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Affiliation(s)
- Yonghua Xing
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Nankai, Tianjin 300192, P.R. China
| | - Junling Zhang
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Nankai, Tianjin 300192, P.R. China
| | - Lu Lu
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Nankai, Tianjin 300192, P.R. China
| | - Deguan Li
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Nankai, Tianjin 300192, P.R. China
| | - Yueying Wang
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Nankai, Tianjin 300192, P.R. China
| | - Song Huang
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Nankai, Tianjin 300192, P.R. China
| | - Chengcheng Li
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Nankai, Tianjin 300192, P.R. China
| | - Zhubo Zhang
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Nankai, Tianjin 300192, P.R. China
| | - Jianguo Li
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Nankai, Tianjin 300192, P.R. China
| | - Aimin Meng
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Nankai, Tianjin 300192, P.R. China
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Xu G, Wu H, Zhang J, Li D, Wang Y, Wang Y, Zhang H, Lu L, Li C, Huang S, Xing Y, Zhou D, Meng A. Metformin ameliorates ionizing irradiation-induced long-term hematopoietic stem cell injury in mice. Free Radic Biol Med 2015; 87:15-25. [PMID: 26086617 PMCID: PMC4707049 DOI: 10.1016/j.freeradbiomed.2015.05.045] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 05/20/2015] [Accepted: 05/26/2015] [Indexed: 12/13/2022]
Abstract
Exposure to ionizing radiation (IR) increases the production of reactive oxygen species (ROS) not only by the radiolysis of water but also through IR-induced perturbation of the cellular metabolism and disturbance of the balance of reduction/oxidation reactions. Our recent studies showed that the increased production of intracellular ROS induced by IR contributes to IR-induced late effects, particularly in the hematopoietic system, because inhibition of ROS production with an antioxidant after IR exposure can mitigate IR-induced long-term bone marrow (BM) injury. Metformin is a widely used drug for the treatment of type 2 diabetes. Metformin also has the ability to regulate cellular metabolism and ROS production by activating AMP-activated protein kinase. Therefore, we examined whether metformin can ameliorate IR-induced long-term BM injury in a total-body irradiation (TBI) mouse model. Our results showed that the administration of metformin significantly attenuated TBI-induced increases in ROS production and DNA damage and upregulation of NADPH oxidase 4 expression in BM hematopoietic stem cells (HSCs). These changes were associated with a significant increase in BM HSC frequency, a considerable improvement in in vitro and in vivo HSC function, and complete inhibition of upregulation of p16(Ink4a) in HSCs after TBI. These findings demonstrate that metformin can attenuate TBI-induced long-term BM injury at least in part by inhibiting the induction of chronic oxidative stress in HSCs and HSC senescence. Therefore, metformin has the potential to be used as a novel radioprotectant to ameliorate TBI-induced long-term BM injury.
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Affiliation(s)
- Guoshun Xu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China; School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
| | - Hongying Wu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Junling Zhang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Deguan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China.
| | - Yueying Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Yingying Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China; Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Heng Zhang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Lu Lu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Chengcheng Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China; Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Song Huang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Yonghua Xing
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Daohong Zhou
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China; Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
| | - Aimin Meng
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin 300192, China; Key Laboratory of Human Diseases Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing 100021, China.
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Abstract
OBJECTIVE The aim of the present study was to develop potential candidates of integrin αvβ3-targeted imaging agent, which can facilitate the diagnosis and treatment of malignant solid tumors. METHODS Peptides derived from tumstatin, named T7 and T7-6H, were derivatized to contain histidine in the C-terminus of their sequence and were labeled with (99m)Tc via nitrido and carbonyl precursors. The radiochemical purity and stability of (99m)Tc-labeled T7 and T7-6H were characterized by thin-layer chromatography. The whole body biodistribution was studied in NCI-H157-bearing BALB/c nude mice. RESULTS The (99m)Tc-labeled T7 and T7-6H showed adequate in vitro stability, with a high radiochemical purity of over 90%. The dissociation constant (Kd) value of the (99m)Tc-labeled T7 and T7-6H ranged from 68.5 nM to 140.8 nM in U251 and NCI-H157 cell lines. (99m)Tc-labeled T7 and T7-6H showed no significant difference of biodistribution in mice. Furthermore, both T7 and T7-6H exhibited a poor blood-brain barrier penetration and a transient accumulation in lung; the uptake in tumor tissues was significantly higher than in muscle tissue, with a ratio of 5.8. CONCLUSION (99m)Tc-labeled T7 and T7-6H can be regarded as promising single-photon emission computed tomography probes for imaging integrin αvβ3, and need to be further studied for noninvasive detection of tumors.
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Affiliation(s)
- Xin He
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin, People's Republic of China
| | - Yumei Hao
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin, People's Republic of China ; Department of Reproductive Medicine, The Affiliated Hospital of Hebei University, Baoding, Hebei, People's Republic of China
| | - Wei Long
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin, People's Republic of China
| | - Naling Song
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin, People's Republic of China
| | - Saijun Fan
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin, People's Republic of China
| | - Aimin Meng
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Tianjin, People's Republic of China
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Zhang Y, Zhai W, Zhao M, Li D, Chai X, Cao X, Meng J, Chen J, Xiao X, Li Q, Mu J, Shen J, Meng A. Effects of iron overload on the bone marrow microenvironment in mice. PLoS One 2015; 10:e0120219. [PMID: 25774923 PMCID: PMC4361683 DOI: 10.1371/journal.pone.0120219] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [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: 11/10/2014] [Accepted: 01/20/2015] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE Using a mouse model, Iron Overload (IO) induced bone marrow microenvironment injury was investigated, focusing on the involvement of reactive oxygen species (ROS). METHODS Mice were intraperitoneally injected with iron dextran (12.5, 25, or 50 mg) every three days for two, four, and six week durations. Deferasirox(DFX)125 mg/ml and N-acetyl-L-cysteine (NAC) 40 mM were co-administered. Then, bone marrow derived mesenchymal stem cells (BM-MSCs) were isolated and assessed for proliferation and differentiation ability, as well as related gene changes. Immunohistochemical analysis assessed the expression of haematopoietic chemokines. Supporting functions of BM-MSCs were studied by co-culture system. RESULTS In IO condition (25 mg/ml for 4 weeks), BM-MSCs exhibited proliferation deficiencies and unbalanced osteogenic/adipogenic differentiation. The IO BM-MSCs showed a longer double time (2.07±0.14 days) than control (1.03±0.07 days) (P<0.05). The immunohistochemical analysis demonstrated that chemokine stromal cell-derived factor-1, stem cell factor -1, and vascular endothelial growth factor-1 expression were decreased. The co-cultured system demonstrated that bone marrow mononuclear cells (BMMNCs) co-cultured with IO BM-MSCs had decreased colony forming unit (CFU) count (p<0.01), which indicates IO could lead to decreased hematopoietic supporting functions of BM-MSCs. This effect was associated with elevated phosphatidylinositol 3 kinase (PI3K) and reduced of Forkhead box protein O3 (FOXO3) mRNA expression, which could induce the generation of ROS. Results also demonstrated that NAC or DFX treatment could partially attenuate cell injury and inhibit signaling pathway striggered by IO. CONCLUSION These results demonstrated that IO can impair the bone marrow microenvironment, including the quantity and quality of BM-MSCs.
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Affiliation(s)
- Yuchen Zhang
- Department of Hematology, Tianjin First Central Hospital, Tianjin, China
| | - Wenjing Zhai
- Department of Stem Cells Transplantation, Blood Disease Hospital of Chinese Academy of Medical Sciences, Tianjin, China
| | - Mingfeng Zhao
- Department of Hematology, Tianjin First Central Hospital, Tianjin, China
- * E-mail:
| | - Deguan Li
- Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, Tianjin, China
| | - Xiao Chai
- Department of Hematology, Tianjin First Central Hospital, Tianjin, China
| | - Xiaoli Cao
- Department of Hematology, Tianjin First Central Hospital, Tianjin, China
| | - Juanxia Meng
- Department of Hematology, Tianjin First Central Hospital, Tianjin, China
| | - Jie Chen
- Department of Hematology, Tianjin First Central Hospital, Tianjin, China
| | - Xia Xiao
- Department of Hematology, Tianjin First Central Hospital, Tianjin, China
| | - Qing Li
- Department of Hematology, Tianjin First Central Hospital, Tianjin, China
| | - Juan Mu
- Department of Hematology, Tianjin First Central Hospital, Tianjin, China
| | - Jichun Shen
- Department of Hematology, Affiliated Hospital of Logistics University of People’s Armed Police Force, Tianjin, China
| | - Aimin Meng
- Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, Tianjin, China
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Chai X, Zhao M, Li D, Zhang Y, Lu W, Cao X, Meng J, You Q, Meng A. [Effects and mechanism of iron overload on hematopoiesis in mice with bone marrow injury]. Zhonghua Xue Ye Xue Za Zhi 2014; 35:1000-4. [PMID: 25417878 DOI: 10.3760/cma.j.issn.0253-2727.2014.11.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To explore effects of iron overload on hematopoiesis in mice with bone marrow injury and its possible mechanism (s). METHODS C57BL/6 mice were divided into control, iron, irradiation, irradiation+iron groups. The iron-overloaded model of bone marrow injury was set up after mice were exposed to the dose of 4 Gy total body irradiation and (or) were injected iron dextran intraperitoneally. Iron overload was confirmed by observing iron deposits in mice and bone marrow labile iron pool. Additionally, the number of peripheral blood and bone marrow mononuclear cells and the frequency of erythroid cells and myeloid cells were counted and hematopoietic function was assessed. RESULTS (1)Iron overload occurred by bone marrow biopsy and flow cytometry analysis. (2)Compared with control group, the number of platelets [(801.9±81.2)×10⁹/L vs (926.0±28.2)×10⁹/L] and BMMNC and the frequency of erythroid cells and myeloid cells decreased. Moreover, hematopoietic colony forming units and single-cell cloning counts decreased significantly in irradiation group (P<0.05). (3)Compared with irradiation group, the number of platelets [(619.0±60.9)×10⁹/L vs (801.9±81.2)×10⁹/L] and the frequency of erythroid cells and myeloid cells decreased; moreover, hematopoietic colony forming units and single-cell cloning counts decreased significantly in irradiation+iron group (P<0.05). (4)Compared with irradiation group, ROS level increased by 1.94 fold in BMMNC, 1.93 fold in erythroid cells and 2.70 fold in myeloid cells, respectively (P<0.05). CONCLUSION The dose of 4 Gy total body irradiation caused bone marrow damage and iron overload based on this injury model, which could damage bone marrow hematopoietic function aggravatingly. And further study found that iron overload was closely related to increased ROS level in BMMNC. The findings would be helpful to further study the injury mechanism of iron overload on the hematopoiesis of bone marrow.
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Affiliation(s)
- Xiao Chai
- Department of Hematology and Oncology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Mingfeng Zhao
- Department of Hematology and Oncology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Deguan Li
- Department of Hematology and Oncology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Yuchen Zhang
- Department of Hematology and Oncology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Wenyi Lu
- Department of Hematology and Oncology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Xiaoli Cao
- Department of Hematology and Oncology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Juanxia Meng
- Department of Hematology and Oncology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Quan You
- Department of Hematology and Oncology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Aimin Meng
- Department of Hematology and Oncology, Tianjin First Central Hospital, Tianjin 300192, China
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Li DG, Meng AM. [Effects of dipeptidyl peptidase-4 on the hematopoiesis and transplantation]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2014; 36:538-41. [PMID: 25360654 DOI: 10.3881/j.issn.1000-503x.2014.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Dipeptidyl peptidase-4 (DPP-4) is a protease that cleaves the peptides with alanine, praline, or other selective amino acids at the N-terminal penultimate position. The substrates of DPP-4 include many chemokines, colony-stimulating factors, and interleukins. Recent research has shown that DPP-4 can affect the hematopoietic stem and progenitor cells and transplantation by truncating the granulocyte colony stimulating factor. However, its regulatory effect on DPP-4 and most peptides truncation are still unknown. This review summarizes the recent advances in the DPP-4 research.
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Affiliation(s)
- De-guan Li
- Tianjin Key Laboratory of Radiation Medicine and Nuclear Medicine,Institute of Radiation Medicine,CAMS and PUMC,Tianjin 300192,China
| | - Ai-min Meng
- Tianjin Key Laboratory of Radiation Medicine and Nuclear Medicine,Institute of Radiation Medicine,CAMS and PUMC,Tianjin 300192,China
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Li D, Lu L, Zhang J, Wang X, Xing Y, Wu H, Yang X, Shi Z, Zhao M, Fan S, Meng A. Mitigating the effects of Xuebijing injection on hematopoietic cell injury induced by total body irradiation with γ rays by decreasing reactive oxygen species levels. Int J Mol Sci 2014; 15:10541-53. [PMID: 24927144 PMCID: PMC4100167 DOI: 10.3390/ijms150610541] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [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: 04/22/2014] [Revised: 05/26/2014] [Accepted: 05/28/2014] [Indexed: 12/31/2022] Open
Abstract
Hematopoietic injury is the most common side effect of radiotherapy. However, the methods available for the mitigating of radiation injury remain limited. Xuebijing injection (XBJ) is a traditional Chinese medicine used to treat sepsis in the clinic. In this study, we investigated the effects of XBJ on the survival rate in mice with hematopoietic injury induced by γ ray ionizing radiation (IR). Mice were intraperitoneally injected with XBJ daily for seven days after total body irradiation (TBI). Our results showed that XBJ (0.4 mL/kg) significantly increased 30-day survival rates in mice exposed to 7.5 Gy TBI. This effect may be attributable to improved preservation of white blood cells (WBCs) and hematopoietic cells, given that bone marrow (BM) cells from XBJ-treated mice produced more granulocyte-macrophage colony forming units (CFU-GM) than that in the 2 Gy/TBI group. XBJ also decreased the levels of reactive oxygen species (ROS) by increasing glutathione (GSH) and superoxide dismutase (SOD) levels in serum and attenuated the increased BM cell apoptosis caused by 2 Gy/TBI. In conclusion, these findings suggest that XBJ enhances the survival rate of irradiated mice and attenuates the effects of radiation on hematopoietic injury by decreasing ROS production in BM cells, indicating that XBJ may be a promising therapeutic candidate for reducing hematopoietic radiation injury.
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Affiliation(s)
- Deguan Li
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Lu Lu
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Junling Zhang
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Xiaochun Wang
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Yonghua Xing
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Hongying Wu
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Xiangdong Yang
- Department of Hematology and Oncology, the First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China.
| | - Zhexin Shi
- Department of Hematology and Oncology, the First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China.
| | - Mingfeng Zhao
- Department of Hematology and Oncology, Tianjin First Central Hospital, Tianjin 300192, China.
| | - Saijun Fan
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Aimin Meng
- Tianjin Key Lab of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
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Hao Y, He X, Zhou X, Meng A, Liu J, Liu J, Song N. [Radio-labeling of T7 peptide with 99mTc and its biodistribution in nude mice bearing non-small cell lung cancer]. Zhongguo Fei Ai Za Zhi 2014; 17:189-96. [PMID: 24667254 PMCID: PMC6019362 DOI: 10.3779/j.issn.1009-3419.2014.03.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Lung cancer is a malignant tumor with high mortality rates. This study aims to develop potential candidates of integrin αvβ3 imaging agents, which can facilitate the diagnosis and treatment of lung cancer. METHODS The T7 peptide was labeled with carbonyl technetium. The thin layer chromatography with acetone as the development system was performed to investigate the purity and stability of (99m)Tc-T7. The binding affinity of (99m)Tc-T7 with NCI-H157 tumor cells was determined. The biodistribution of (99m)Tc-T7 in nude mice bearing non-small cell lung carcinoma was observed after injection of (99m)Tc-T7 at 0.5 h, 1 h, 2 h, 4 h, and 8 h, and the radioactive ratio of tumor (T) and non-tumor tissues (NT) was calculated. RESULTS 99mTc labeled T7 had high radiochemical purity of more than 90%, which does not require further purification, with good stability in vitro. The association and dissociation constant (KD) of (99m)Tc-T7 with NCI-H157 tumor cells was 196.1 nM. (99m)Tc-T7 was mainly metabolism through the internal organs with rapid blood removal. Moreover, the uptake in tumor tissue was significantly higher than the muscle with tumor/muscle ratio of 5.8. In addition, the (99m)Tc-T7 exhibited a transient accumulation in the lungs. CONCLUSIONS The (99m)Tc-T7 could be prepared using a simple method, had high labeling rate and good stability, and could be accumulated at tumor site. Thus, (99m)Tc-T7 is a potential lung cancer SPECT/CT imaging agent.
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Affiliation(s)
- Yumei Hao
- Department of Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Xin He
- Department of Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Xiaoliang Zhou
- Department of Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Aimin Meng
- Department of Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Jianfeng Liu
- Department of Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Jinjian Liu
- Department of Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Naling Song
- Department of Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Tianjin 300192, China
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Zhang J, Yang R, Zhou D, Rudolph KL, Meng A, Ju Z. Exonuclease 1 is essential for maintaining genomic stability and the proliferative capacity of neural but not hematopoietic stem cells. Stem Cell Res 2014; 12:250-9. [DOI: 10.1016/j.scr.2013.11.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 09/26/2013] [Accepted: 11/01/2013] [Indexed: 12/29/2022] Open
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Zhao J, Liu J, Han S, Deng H, Deng L, Liu J, Meng A, Dong A, Zhang J. Acid-induced disassemblable nanoparticles based on cyclic benzylidene acetal-functionalized graft copolymer via sequential RAFT and ATRP polymerization. Polym Chem 2014. [DOI: 10.1039/c3py01324c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhao J, Liu J, Xu S, Zhou J, Han S, Deng L, Zhang J, Liu J, Meng A, Dong A. Graft copolymer nanoparticles with pH and reduction dual-induced disassemblable property for enhanced intracellular curcumin release. ACS Appl Mater Interfaces 2013; 5:13216-13226. [PMID: 24313273 DOI: 10.1021/am404213w] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Nanoparticle (NP)-assisted drug delivery systems with disassemblable behaviors in response to intracellular microenvironment are urgently demanded in systemic cancer chemotherapy for enhanced intracellular drug release. Curcumin (CUR), an effective and safe anticancer agent, was limited by its water insolubility and poor bioavailability. Herein, pH and reduction dual-induced disassemblable NPs for high loading efficiency and improved intracellular release of CUR were developed based on an acid degradable cyclic benzylidene acetal groups (CBAs)-functionalized poly(2,4,6-trimethoxybenzylidene-1,1,1-tris(hydroxymethyl)ethane methacrylate)-g-SS-poly(ethylene glycol) (PTTMA-g-SS-PEG) graft copolymer, which was readily prepared via RAFT copolymerization and coupling reaction. The NPs self-assembled from PTTMA-g-SS-PEG copolymers were stable at physiological pH, and quickly disassembled in mildly acidic and reductive environments because of the hydrolysis of CBAs in hydrophobic PTTMA core and the cleavage of disulfide-linked detachable PEG shell. PTTMA-g-SS-PEG NPs exhibited excellent CUR loading capacity with drug loading content up to 19.2% and entrapment efficiency of 96.0%. Within 20 h in vitro, less than 15.0% of CUR was released from the CUR-loaded NPs in normal physiological conditions, whereas 94.3% was released in the presence of reductive agent and mildly acidic conditions analogous to the microenvironment in endosome/lysosome and cytoplasm. Confocal fluorescence microscopies revealed that the CUR-loaded PTTMA-g-SS-PEG NPs exhibited more efficiently intracellular CUR release for EC-109 cells than that of CUR-loaded reduction-unresponsive PTTMA-g-PEG NPs and free CUR. In vitro cytotoxicity studies displayed blank PTTMA-g-SS-PEG NPs showed low toxicity at concentrations up to 1.0 mg/mL, whereas CUR-loaded PTTMA-g-SS-PEG NPs demonstrated more efficient growth inhibition toward EC-109 and HepG-2 cells than reduction-unresponsive controls and free CUR. Therefore, the above results indicated that pH and reduction dual-induced disassemblable PTTMA-g-SS-PEG NPs may have emerged as superior nanocarriers for active loading and promoted intracellular drug delivery in systemic cancer chemotherapy.
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Affiliation(s)
- Junqiang Zhao
- School of Materials Science and Engineering, Tianjin University , Tianjin 300072, P.R. China
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Gao H, Liu J, Yang C, Cheng T, Chu L, Xu H, Meng A, Fan S, Shi L, Liu J. The impact of PEGylation patterns on the in vivo biodistribution of mixed shell micelles. Int J Nanomedicine 2013; 8:4229-46. [PMID: 24235825 PMCID: PMC3825670 DOI: 10.2147/ijn.s51566] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Polyethylene glycol (PEG)-ylation is a widely used strategy to fabricate nanocarriers with a long blood circulation time. Further elaboration of the contribution of the surface PEGylation pattern to biodistribution is highly desirable. We fabricated a series of polyion complex (PIC) micelles PEGylated with different ratios (PEG2k and PEG550). The plasma protein adsorption, murine macrophage uptake, and in vivo biodistribution with iodine-125 as the tracer were systematically studied to elucidate the impact of PEGylation patterns on the biodistribution of micelles. We demonstrated that the PEGylated micelles with short hydrophilic PEG chains mixed on the surface were cleared quickly by the reticuloendothelial system (RES), and the single PEG2k PEGylated micelles could efficiently prolong the blood circulation time and increase their deposition in tumor sites. The present study extends the understanding of the PEGylation strategy to further advance the development of ideal nanocarriers for drug delivery and imaging applications.
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Affiliation(s)
- Hongjun Gao
- Key Laboratory of Functional Polymer Materials, Ministry of Education, and Institute of Polymer Chemistry, Nankai University, Tianjin, People's Republic of China
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Chai X, Zhao MF, Li DG, Meng JX, Lu WY, Mu J, Meng AM. [Establishment of an mouse model of iron-overload and its impact on bone marrow hematopoiesis]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2013; 35:547-52. [PMID: 24183045 DOI: 10.3881/j.issn.1000-503x.2013.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To establish a mouse model of iron overload by intraperitoneal injection of iron dextran and investigate the impact of iron overload on bone marrow hematopoiesis. METHODS A total of 40 C57BL/6 mice were divided into control group, low-dose iron group (12.5 mg/ml), middle-dose iron group (25 mg/ml), and high-dose iron group (50 mg/ml). The control group received normal saline (0.2 ml), and the rest were injected with intraperitoneal iron dextran every three days for six weeks. Iron overload was confirmed by observing the bone marrow, hepatic, and splenic iron deposits and the bone marrow labile iron pool. In addition, peripheral blood and bone marrow mononuclear cells were counted and the hematopoietic function was assessed. RESULTS Iron deposits in bone marrow, liver, and spleen were markedly increased in the mouse models. Bone marrow iron was deposited mostly within the matrix with no significant difference in expression of labile iron pool.Compared with control group, the ability of hematopoietic colony-forming in three interventional groups were decreased significantly (P<0.05). Bone marrow mononuclear cells counts showed no significant difference. The amounts of peripheral blood cells (white blood cells, red blood cells, platelets, and hemoglobin) in different iron groups showed no significant difference among these groups;although the platelets were decreased slightly in low-dose iron group [(780.7±39.60)×10(9)/L], middle dose iron group [(676.2±21.43)×10(9)/L], and high-dose iron group [(587.3±19.67)×10(9)/L] when compared with the control group [(926.0±28.23)×10(9)/L], there was no significant difference(P>0.05). CONCLUSIONS The iron-overloaded mouse model was successfully established by intraperitoneal administration of iron dextran. Iron overload can damage the hepatic, splenic, and bone marrow hematopoietic function, although no significant difference was observed in peripheral blood count.
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Affiliation(s)
- Xiao Chai
- Department of Hematology, Tianjin First Central Hospital, the First Central Clinical College of Tianjin Medical University, Tianjin 300192, China
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Chang J, Wang Y, Shao L, Byrum J, Feng W, Luo Y, Meng A, Chow M, Zhou D. Hematopoietic stem cells from Ts65Dn mouse bone marrow are deficient in the repair of DNA double-strand breaks. Exp Hematol 2013. [DOI: 10.1016/j.exphem.2013.05.126] [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: 10/26/2022]
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Lu W, Zhao M, Rajbhandary S, Xie F, Chai X, Mu J, Meng J, Liu Y, Jiang Y, Xu X, Meng A. Free iron catalyzes oxidative damage to hematopoietic cells/mesenchymal stem cells in vitro and suppresses hematopoiesis in iron overload patients. Eur J Haematol 2013; 91:249-261. [PMID: 23772810 DOI: 10.1111/ejh.12159] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2013] [Indexed: 12/01/2022]
Abstract
OBJECTIVES Transfusional iron overload is of major concern in hematological disease. Iron-overload-related dyserythropoiesis and reactive oxygen species (ROS)-related damage to hematopoietic stem cell (HSC) function are major setbacks in treatment for such disorders. We therefore aim to investigate the effect of iron overload on hematopoiesis in the patients and explore the role of ROS in iron-induced oxidative damage in hematopoietic cells and microenvironment in vitro. PATIENTS AND METHODS The hematopoietic colony-forming capacity and ROS level of bone marrow cells were tested before and after iron chelation therapy. In vitro, we first established an iron overload model of bone marrow mononuclear cells (BMMNC) and umbilical cord-derived mesenchymal stem cells (UC-MSC). ROS level, cell cycle, and apoptosis were measured by FACS. Function of cells was individually studied by Colony-forming cell (CFC) assay and co-culture system. Finally, ROS-related signaling pathway was also detected by Western blot. RESULTS After administering deferoxamine (DFO), reduced blood transfusion, increased neutrophil, increased platelet, and improved pancytopenia were observed in 76.9%, 46.2%, 26.9%, and 15.4% of the patients, respectively. Furthermore, the colony-forming capacity of BMMNC from iron overload patient was deficient, and ROS level was higher, which were partially recovered following iron chelation therapy. In vitro, exposure of BMMNC to ferric ammonium citrate (FAC) for 24 h decreased the ratio of CD34(+) cell from 0.91 ± 0.12% to 0.39 ± 0.07%. Excessive iron could also induce apoptosis, arrest cell cycle, and decrease function of BMMNC and UC-MSC, which was accompanied by increased ROS level and stimulated p38MAPK, p53 signaling pathway. More importantly, N-acetyl-L-cysteine (NAC) or DFO could partially attenuate cell injury and inhibit the signaling pathway induced by excessive iron. CONCLUSIONS Our study shows that iron overload injures the hematopoiesis by damaging hematopoietic cell and hematopoietic microenvironment, which is mediated by ROS-related signaling proteins.
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Affiliation(s)
- Wenyi Lu
- The First Central Clinical College of Tianjin Medical University, Tianjin First Central Hospital, Tianjin, China
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Zhang H, Wang YA, Meng A, Yan H, Wang X, Niu J, Li J, Wang H. Inhibiting TGFβ1 has a protective effect on mouse bone marrow suppression following ionizing radiation exposure in vitro. J Radiat Res 2013; 54:630-636. [PMID: 23370919 PMCID: PMC3709670 DOI: 10.1093/jrr/rrs142] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 12/01/2012] [Accepted: 12/27/2012] [Indexed: 06/01/2023]
Abstract
Ionizing radiation (IR) causes not only acute tissue damage but also residual bone marrow (BM) suppression. The induction of residual BM injury is primarily attributable to the induction of reactive oxygen species (ROS) pressure in hematopoietic cells. In this study, we examined if SB431542, a transforming growth factor β1 (TGFβ1) inhibitor, can mitigate IR-induced BM suppression in vitro. Our results showed that treatment with SB431542 protected mice bone marrow mononuclear cells (BMMNCs), hematopoietic progenitor cells (HPCs) and hematopoietic stem cells (HSCs) from IR-induced suppression using cell viability assays, clonogenic assays and competitive repopulation assays. Moreover, expression of gene-related ROS production in hematopoietic cells was analyzed. The expression of NOX1, NOX2 and NOX4 was increased in irradiated BMMNCs, and that of NOX2 and NOX4 was reduced by SB431542 treatment. Therefore, the results from this study suggest that SB431542, a TGFβ1 inhibitor, alleviates IR-induced BM suppression at least in part via inhibiting IR-induced NOX2 and NOX4 expression.
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Affiliation(s)
- Heng Zhang
- Department of Radiation Oncology, Tianjin Union Medical Center, No.190 Jieyuan Road, Nankai District, Tianjin, China
- Institute of Radiation Medicine, Peking Union Medical College (PUMC), No. 238 Baidi Road, Nankai District, Tianjin, China
| | - Ying-ai Wang
- Department of Internal medicine, Tianjin Medical University, No. 22 Qixiangtai Road, Hexi District, Tianjin, China
| | - Aimin Meng
- Institute of Radiation Medicine, Peking Union Medical College (PUMC), No. 238 Baidi Road, Nankai District, Tianjin, China
| | - Hao Yan
- Department of Radiation Oncology, Tianjin Union Medical Center, No.190 Jieyuan Road, Nankai District, Tianjin, China
| | - Xinzhuo Wang
- Department of Radiation Oncology, Tianjin Union Medical Center, No.190 Jieyuan Road, Nankai District, Tianjin, China
| | - Jingxiu Niu
- Department of Radiation Oncology, Tianjin Union Medical Center, No.190 Jieyuan Road, Nankai District, Tianjin, China
| | - Jin Li
- Institute of Radiation Medicine, Peking Union Medical College (PUMC), No. 238 Baidi Road, Nankai District, Tianjin, China
| | - Hui Wang
- Department of Radiation Oncology, Tianjin Union Medical Center, No.190 Jieyuan Road, Nankai District, Tianjin, China
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Li D, Wang Y, Wu H, Lu L, Wang X, Zhang J, Zhang H, Fan S, Fan F, Zhou D, Meng A. The effects of p38 MAPK inhibition combined with G-CSF administration on the hematoimmune system in mice with irradiation injury. PLoS One 2013; 8:e62921. [PMID: 23646161 PMCID: PMC3639947 DOI: 10.1371/journal.pone.0062921] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Accepted: 03/29/2013] [Indexed: 12/20/2022] Open
Abstract
The acute and residual (or long-term) bone marrow (BM) injury induced by ionizing radiation (IR) is a major clinic concern for patients receiving conventional radiotherapy and victims accidentally exposed to a moderate-to-high dose of IR. In this study, we investigated the effects of the treatment with the p38 inhibitor SB203580 (SB) and/or granulocyte colony-stimulating factor (G-CSF) on the hematoimmune damage induced by IR in a mouse model. Specifically, C57BL/6 mice were exposed to a sublethal dose (6 Gy) of total body irradiation (TBI) and then treated with vehicle, G-CSF, SB, and G-CSF plus SB. G-CSF (1 µg/mouse) was administrated to mice by intraperitoneal (ip) injection twice a day for six successive days; SB (15 mg/kg) by ip injection every other day for 10 days. It was found that the treatment with SB and/or G-CSF significantly enhanced the recovery of various peripheral blood cell counts and the number of BM mononuclear cells 10 and 30 days after the mice were exposed to TBI compared with vehicle treatment. Moreover, SB and/or G-CSF treatment also increased the clonogenic function of BM hematopoietic progenitor cells (HPCs) and the frequency of BM lineage−Sca1+c-kit+ cells (LSK cells) and short-term and long term hematopoietic stem cells (HSCs) 30 days after TBI, in comparison with vehicle treated controls. However, the recovery of peripheral blood B cells and CD4+ and CD8+ T cells was not significantly affected by SB and/or G-CSF treatment. These results suggest that the treatment with SB and/or G-CSF can reduce IR-induced BM injury probably in part via promoting HSC and HPC regeneration.
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Affiliation(s)
- Deguan Li
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Yueying Wang
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Hongying Wu
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Lu Lu
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Xiaochun Wang
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Junling Zhang
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Heng Zhang
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Saijun Fan
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Feiyue Fan
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Daohong Zhou
- Division of Radiation Health, Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Aimin Meng
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
- * E-mail:
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Zhang N, Chen W, Zhou X, Zhou X, Xie X, Meng A, Li S, Wang L. C333H ameliorated insulin resistance through selectively modulating peroxisome proliferator-activated receptor γ in brown adipose tissue of db/db mice. Biol Pharm Bull 2013; 36:980-7. [PMID: 23563593 DOI: 10.1248/bpb.b13-00008] [Citation(s) in RCA: 7] [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: 11/22/2022]
Abstract
Peroxisome proliferator-activated receptor γ (PPARγ) is a unique target for insulin sensitizer agents. These drugs have been used for the clinical treatment of type 2 diabetes for almost twenty years. However, serious safety issues are associated with the PPARγ agonist thiazolidinediones (TZDs). Selective PPARγ modulators (SPPARMs) which retain insulin sensitization without TZDs-like side effects are emerging as a promising new generation of insulin sensitizers. C333H is a novel structure compound synthesized by our laboratory. In diabetic rodent models, C333H has insulin-sensitizing and glucose-lowering activity comparable to that of TZDs, and causes no significant increase in body weight or adipose tissue weight in db/db mice. In diabetic db/db mice, C333H elevated circulating high molecular weight adiponectin isoforms, decreased PPARγ 273 serine phosphorylation in brown adipose tissue and selectively modulated the expression of a subset of PPARγ target genes in adipose tissue. In vitro, C333H weakly recruited coactivator and weakly dissociated corepressor activity. These findings suggest that C333H has similar properties to SPPARMs and may be a potential therapeutic agent for the treatment of type 2 diabetes.
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Affiliation(s)
- Ning Zhang
- Institute of Radiation Medicine, Peking Union Medical College &Chinese Academy of Medical Sciences, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, P. R. China
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Zhang H, Zhai Z, Wang Y, Zhang J, Wu H, Wang Y, Li C, Li D, Lu L, Wang X, Chang J, Hou Q, Ju Z, Zhou D, Meng A. Resveratrol ameliorates ionizing irradiation-induced long-term hematopoietic stem cell injury in mice. Free Radic Biol Med 2013; 54:40-50. [PMID: 23124026 PMCID: PMC4711372 DOI: 10.1016/j.freeradbiomed.2012.10.530] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 09/06/2012] [Accepted: 10/08/2012] [Indexed: 01/25/2023]
Abstract
Our recent studies showed that total body irradiation (TBI) induces long-term bone marrow (BM) suppression in part by induction of hematopoietic stem cell (HSC) senescence through NADPH oxidase 4 (NOX4)-derived reactive oxygen species (ROS). Therefore, in this study we examined whether resveratrol (3,5,4'-trihydroxy-trans-stilbene), a potent antioxidant and a putative activator of Sirtuin 1 (Sirt1), can ameliorate TBI-induced long-term BM injury by inhibiting radiation-induced chronic oxidative stress and senescence in HSCs. Our results showed that pretreatment with resveratrol not only protected mice from TBI-induced acute BM syndrome and lethality but also ameliorated TBI-induced long-term BM injury. The latter effect is probably attributable to resveratrol-mediated reduction of chronic oxidative stress in HSCs, because resveratrol treatment significantly inhibited TBI-induced increase in ROS production in HSCs and prevented mouse BM HSCs from TBI-induced senescence, leading to a significant improvement in HSC clonogenic function and long-term engraftment after transplantation. The inhibition of TBI-induced ROS production in HSCs is probably attributable to resveratrol-mediated downregulation of NOX4 expression and upregulation of Sirt1, superoxide dismutase 2 (SOD2), and glutathione peroxidase 1 expression. Furthermore, we showed that resveratrol increased Sirt1 deacetylase activity in BM hematopoietic cells; and Ex527, a potent Sirt1 inhibitor, can attenuate resveratrol-induced SOD2 expression and the radioprotective effect of resveratrol on HSCs. These findings demonstrate that resveratrol can protect HSCs from radiation at least in part via activation of Sirt1. Therefore, resveratrol has the potential to be used as an effective therapeutic agent to ameliorate TBI-induced long-term BM injury.
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Affiliation(s)
- Heng Zhang
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
- Department of Radiation Oncology, Tianjin Union Medical Center
| | - Zhibin Zhai
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Yueying Wang
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Junling Zhang
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Hongying Wu
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Yingying Wang
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
- Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, USA
| | - Chengcheng Li
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Deguan Li
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Lu Lu
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Xiaochun Wang
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Jianhui Chang
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
- Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, USA
| | - Qi Hou
- Institute of Materia Medica PUMC & CAMS, Beijing, China
| | - Zhenyu Ju
- Institute of Aging Research, College of Medicine Hangzhou Normal University, Zhejiang, China
| | - Daohong Zhou
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
- Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, USA
- Corresponding author: Drs. Daohong Zhou (Tel: 001 501 5265272 and ) and Aimin Meng (Tel: +86 22 85682353 and )
| | - Aimin Meng
- Institute of Radiation Medicine, Peking Union Medical College & Chinese Academy of Medical Sciences (PUMC & CAMS), Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
- Corresponding author: Drs. Daohong Zhou (Tel: 001 501 5265272 and ) and Aimin Meng (Tel: +86 22 85682353 and )
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Abstract
AIM To appraise the efficacy of Vam3 (Amurensis H), a dimeric derivative of resveratrol, at inhibiting cigarette smoke-induced autophagy. METHODS Human bronchial epithelial cells were treated with cigarette smoke condensates, and a chronic obstructive pulmonary disease (COPD) model was established by exposing male BALB/c mice to cigarette smoke. The protein levels of the autophagic marker microtubule-associated protein 1A/1B-light chain 3 (LC3), Sirtuin 1 (Sirt1), and foxhead box O 3a (FoxO3a) were examined using Western blotting and Immunohistochemistry. LC3 punctae were detected by immunofluorescence. The levels of FoxO3a acetylation were examined by immunoprecipitation. The level of intracellular oxidation was assessed by detecting ROS and GSH-Px. RESULTS Vam3 attenuated cigarette smoke condensate-induced autophagy in human bronchial epithelial cells, and restored the expression levels of Sirt1 and FoxO3a that had been reduced by cigarette smoke condensates. Similar protective effects of Vam3, reducing autophagy and restoring the levels of Sirt1 and FoxO3a, were observed in the COPD animal model. Additionally, Vam3 also diminished the oxidative stress that was induced by the cigarette smoke condensates. CONCLUSION Vam3 decreases cigarette smoke-induced autophagy via up-regulating/restoring the levels of Sirt1 and FoxO3a and inhibiting the induced oxidative stress.
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Affiliation(s)
- Ji Shi
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Pharmaceutical, National Key Laboratory of Natural Pharmaceutical Active Substance and Function, Beijing 100050, China
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Key Laboratory of Molecular Nuclear Medicine, Tianjin 300192, China
| | - Ning Yin
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Key Laboratory of Molecular Nuclear Medicine, Tianjin 300192, China
| | - Ling-ling Xuan
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Pharmaceutical, National Key Laboratory of Natural Pharmaceutical Active Substance and Function, Beijing 100050, China
| | - Chun-suo Yao
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Natural Medicine Chemistry, Beijing 100050, China
| | - Ai-min Meng
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Key Laboratory of Molecular Nuclear Medicine, Tianjin 300192, China
| | - Qi Hou
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Pharmaceutical, National Key Laboratory of Natural Pharmaceutical Active Substance and Function, Beijing 100050, China
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Zhang H, Li J, Wang YY, Meng AM, Liu Q, Wang L, Chen FH, Wang XC, Zhai ZB, Fu Y, Wang Q. Retinoblastoma 94 enhances radiation treatment of esophageal squamous cell carcinoma in vitro and in vivo. J Radiat Res 2012; 53:117-124. [PMID: 22302052 DOI: 10.1269/jrr.11051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We performed the study to investigate whether adenovirus-mediated retinoblastoma 94 (RB94) gene transfer could enhance radiation treatment of esophageal squamous cell carcinoma (ESCC) in vitro and in vivo. ESCC cells (Kyse150 cell line) were cultivated in vitro and tumors originated from the cell line were propagated as xenografts in nude mice. Treatment with Ad-RB94 and/or ionizing radiation (IR) was carried out both in vitro and in vivo with Ad-LacZ control vector and blank control. Cell viability, cell cycle distribution, cell apoptosis, tumor growth and transfected gene expression were evaluated and tumor degeneration was analyzed. The data of quantification real-time PCR assays and immunohistochemistry staining using RB antibody indicated that RB94 was efficiently transfected into Kyse150 cells. In vitro, data of cell growth assay indicated that treatment with Ad-RB94 improved radiation treatment of Kyse150 cells. Tumor xenograft studies, pathological analysis of H.E. staining and Ki67 staining suggested transfecting RB94 enhanced tumor regression induced by radiation treatment in vivo. In addition, data of Annexin V, TUNEL and cell cycle distribution assays proposed combination treatment effectively induced cell apoptosis and cell cycle arresting in G2/M phase. In conclusion, transferring RB94 gene by the adenoviral vector enhances radiation treatment of ESCC.
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Affiliation(s)
- Heng Zhang
- Institute of Radiation Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, China
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Li H, Wang Y, Pazhanisamy SK, Shao L, Batinic-Haberle I, Meng A, Zhou D. Mn(III) meso-tetrakis-(N-ethylpyridinium-2-yl) porphyrin mitigates total body irradiation-induced long-term bone marrow suppression. Free Radic Biol Med 2011; 51:30-7. [PMID: 21565268 PMCID: PMC3390209 DOI: 10.1016/j.freeradbiomed.2011.04.016] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 04/05/2011] [Accepted: 04/08/2011] [Indexed: 12/28/2022]
Abstract
Our recent studies showed that total body irradiation (TBI) induces long-term bone marrow (BM) suppression in part by induction of hematopoietic stem cell (HSC) senescence through reactive oxygen species (ROS). In this study, we examined if Mn(III) meso-tetrakis-(N-ethylpyridinium-2-yl) porphyrin (MnTE), a superoxide dismutase mimetic and potent antioxidant, can mitigate TBI-induced long-term BM injury in a mouse model. Our results showed that post-TBI treatment with MnTE significantly inhibited the increases in ROS production and DNA damage in HSCs and the reduction in HSC frequency and clonogenic function induced by TBI. In fact, the clonogenic function of HSCs from irradiated mice after MnTE treatment was comparable to that of HSCs from normal controls on a per-HSC basis, suggesting that MnTE treatment inhibited the induction of HSC senescence by TBI. This suggestion is supported by the finding that MnTE treatment also reduced the expression of p16(Ink4a) (p16) mRNA in HSCs induced by TBI and improved the long-term and multilineage engraftment of irradiated HSCs after transplantation. Therefore, the results from this study demonstrate that MnTE has the potential to be used as a therapeutic agent to mitigate TBI-induced long-term BM suppression by inhibiting ionizing radiation-induced HSC senescence through the ROS-p16 pathway.
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Affiliation(s)
- Hongliang Li
- Department of Biochemistry and Molecular Biology, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Department of Pathology, Medical University of South Carolina, Charleston, SC
- Division of Radiation Health, Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Yong Wang
- Department of Pathology, Medical University of South Carolina, Charleston, SC
| | - Senthil K. Pazhanisamy
- Department of Pathology, Medical University of South Carolina, Charleston, SC
- Division of Radiation Health, Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Lijian Shao
- Department of Pathology, Medical University of South Carolina, Charleston, SC
- Division of Radiation Health, Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR
| | | | - Aimin Meng
- Department of Biochemistry and Molecular Biology, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Daohong Zhou
- Department of Pathology, Medical University of South Carolina, Charleston, SC
- Division of Radiation Health, Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR
- Corresponding author: Daohong Zhou, MD, Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, 4301 W Markham, #607, Little Rock, AR 72205; Tel: (501) 526-5272; Fax: (501) 686-6517;
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Shao L, Li H, Pazhanisamy SK, Meng A, Wang Y, Zhou D. Reactive oxygen species and hematopoietic stem cell senescence. Int J Hematol 2011; 94:24-32. [PMID: 21567162 DOI: 10.1007/s12185-011-0872-1] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 04/27/2011] [Accepted: 04/27/2011] [Indexed: 12/31/2022]
Abstract
Hematopoietic stem cells (HSCs) are responsible for sustaining hematopoietic homeostasis and regeneration after injury for the entire lifespan of an organism through self-renewal, proliferation, differentiation, and mobilization. Their functions can be affected by reactive oxygen species (ROS) that are produced endogenously through cellular metabolism or after exposure to exogenous stress. At physiological levels, ROS function as signal molecules which can regulate a variety of cellular functions, including HSC proliferation, differentiation, and mobilization. However, an abnormal increase in ROS production occurs under various pathological conditions, which can inhibit HSC self-renewal and induce HSC senescence, resulting in premature exhaustion of HSCs and hematopoietic dysfunction. This review aims to provide a summary of a number of recent findings regarding the cellular sources of ROS in HSCs and the mechanisms of action whereby ROS induce HSC senescence. In particular, we highlight the roles of the p38 mitogen-activated protein kinase (p38)-p16(Ink4a) (p16) pathway in mediating ROS-induced HSC senescence.
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Affiliation(s)
- Lijian Shao
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Hongliang Li
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Department of Biochemistry and Molecular Biology, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin, China
| | - Senthil K Pazhanisamy
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Aimin Meng
- Department of Biochemistry and Molecular Biology, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin, China
| | - Yong Wang
- Department of Pathology, Medical University of South Carolina, Charleston, SC, USA
| | - Daohong Zhou
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, 4301 W Markham, #607, Little Rock, AR, 72205, USA.
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Chang JH, Zhang H, Guan FX, Wang YY, Li DG, Wu HY, Wang CC, Zhou CH, Zhai ZB, Lu L, Wang XC, Hou Q, Meng AM. [The protective effects of SB203580 against mortality and radiation induced intestinal injury of mice]. Yao Xue Xue Bao 2011; 46:395-399. [PMID: 21751492] [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
This study is to investigate the protective effects of the SB203580 against radiation induced mortality and intestinal injury of mice. A total of 67 male C57BL/6 mice (20.0-22.0 g) were matched according to body weight and randomly assigned to one of three groups: control, total body irradiation exposure (IR, 7.2 Gy) only, and IR (7.2 Gy) + SB203580 (15 mg x kg(-1)). 30 days survival rate was observed in the experiment. In intestinal injury experiment, the expression levels of caspase-3, Ki67, p53 and p-p38 were assayed in the mice intestine crypts. The results showed that the 30 days survival rate was 100% (control), 0 (IR) and 40% (IR+ SB203580), separately. Compared to the IR groups, the positive cells of caspase-3, p53 and p-p38 in crypt cells decreased 33.00%, 21.78% and 34.63%, respectively. The rate of positive cells of Ki67 increased 37.96%. Significant difference was found between all of them (P < 0.01). SB203580 potently protected against radiation-induced lethal and intestinal injury in mice, and it may be a potential radio protector.
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Affiliation(s)
- Jian-hui Chang
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical Collage, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin 300192, China
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Li D, Wang Y, Wu H, Lu L, Zhang H, Chang J, Zhai Z, Zhang J, Wang Y, Zhou D, Meng A. Mitigation of ionizing radiation-induced bone marrow suppression by p38 inhibition and G-CSF administration. J Radiat Res 2011; 52:712-6. [PMID: 21971035 PMCID: PMC3390190 DOI: 10.1269/jrr.11007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
p38 mitogen-activated protein kinases (p38) has been shown to be activated in hematopoietic stem and progenitors cells after exposure to ionizing radiation (IR) and its activation has been implicated in bone marrow (BM) suppression under various pathological conditions. Therefore, in the present study we investigated whether inhibition of p38 activity alone with SB203580 (SB, a specific p38 inhibitor) or in combination with granulocyte colony-stimulating factor (G-CSF) can mitigate total body irradiation (TBI)-induced BM damage and lethality. Our results showed that p38 inhibition with SB had no significant effect on the 30-day survival rates of the mice exposed to 7.2 Gy TBI when it was used alone but increased the survival of the mice when it was combined with G-CSF. This combined effect may be attributable to a better preservation or stimulation of hematopoietic stem and progenitor cells, because BM cells from SB and G-CSF-treated mice produced more colony forming units-granulocyte-macrophage (CFU-GM) and 4-week cobblestone area forming cells (CAFCs) than the cells from either SB or G-CSF-treated mice after TBI in a colony forming cell assay and a CAFC assay, respectively. These findings suggest that the combined therapy with SB and G-GSF is more effective in mitigating TBI-induced acute BM injury than either agent alone.
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Affiliation(s)
- Deguan Li
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical Collage, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Yueying Wang
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical Collage, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Hongying Wu
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical Collage, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Lu Lu
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical Collage, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Heng Zhang
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical Collage, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Jianhui Chang
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical Collage, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Zhibin Zhai
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical Collage, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Junling Zhang
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical Collage, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
| | - Yong Wang
- Department of Pathology, Medical University of South Carolina, Charleston, SC, USA
| | - Daohong Zhou
- Division of Radiation Health, Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Aimin Meng
- Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical Collage, Tianjin Key Laboratory of Molecular Nuclear Medicine, Tianjin, China
- Corresponding author: Phone: + 86-022-85682353, Fax: + 86-022-85683033,
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Wang XC, Tian LL, Tian J, Wu HL, Meng AM. Erratum to: Overexpression of Cks1 is associated with poor survival by inhibiting apoptosis in breast cancer. J Cancer Res Clin Oncol 2010; 136:637. [DOI: 10.1007/s00432-010-0768-0] [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: 11/24/2022]
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Wang Y, Liu L, Pazhanisamy SK, Li H, Meng A, Zhou D. Total body irradiation causes residual bone marrow injury by induction of persistent oxidative stress in murine hematopoietic stem cells. Free Radic Biol Med 2010; 48:348-56. [PMID: 19925862 PMCID: PMC2818724 DOI: 10.1016/j.freeradbiomed.2009.11.005] [Citation(s) in RCA: 214] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2009] [Revised: 10/29/2009] [Accepted: 11/09/2009] [Indexed: 02/07/2023]
Abstract
Ionizing radiation (IR) and/or chemotherapy causes not only acute tissue damage but also late effects including long-term (or residual) bone marrow (BM) injury. The induction of residual BM injury is primarily attributable to the induction of hematopoietic stem cell (HSC) senescence. However, the molecular mechanisms by which IR and/or chemotherapy induces HSC senescence have not been clearly defined, nor has an effective treatment been developed to ameliorate the injury. Thus, we investigated these mechanisms in this study. The results from this study show that exposure of mice to a sublethal dose of total body irradiation (TBI) induced a persistent increase in reactive oxygen species (ROS) production in HSCs only. The induction of chronic oxidative stress in HSCs was associated with sustained increases in oxidative DNA damage, DNA double-strand breaks (DSBs), inhibition of HSC clonogenic function, and induction of HSC senescence but not apoptosis. Treatment of the irradiated mice with N-acetylcysteine after TBI significantly attenuated IR-induced inhibition of HSC clonogenic function and reduction of HSC long-term engraftment after transplantation. The induction of chronic oxidative stress in HSCs by TBI is probably attributable to the up-regulation of NADPH oxidase 4 (NOX4), because irradiated HSCs expressed an increased level of NOX4, and inhibition of NOX activity with diphenylene iodonium but not apocynin significantly reduced TBI-induced increases in ROS production, oxidative DNA damage, and DNA DSBs in HSCs and dramatically improved HSC clonogenic function. These findings provide the foremost direct evidence demonstrating that TBI selectively induces chronic oxidative stress in HSCs at least in part via up-regulation of NOX4, which leads to the induction of HSC senescence and residual BM injury.
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Affiliation(s)
- Yong Wang
- Department of Pathology, Medical University of South Carolina, Charleston, South Carolina
| | - Lingbo Liu
- Department of Pathology, Medical University of South Carolina, Charleston, South Carolina
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Senthil K. Pazhanisamy
- Department of Pathology, Medical University of South Carolina, Charleston, South Carolina
| | - Hongliang Li
- Department of Pathology, Medical University of South Carolina, Charleston, South Carolina
- Department of Biochemistry and Molecular Biology, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin, China
| | - Aimin Meng
- Department of Pathology, Medical University of South Carolina, Charleston, South Carolina
- Department of Biochemistry and Molecular Biology, Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin, China
| | - Daohong Zhou
- Department of Pathology, Medical University of South Carolina, Charleston, South Carolina
- Corresponding author: Daohong Zhou, MD, Department of Pathology, Medical University of SC, 165 Ashley Av., Suite 309, PO Box 250908, Charleston, SC 29425 Tel: (843)792-7532; Fax: (843)792-0368;
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Wang XC, Tian J, Tian LL, Wu HL, Meng AM, Ma TH, Xiao J, Xiao XL, Li CH. Role of Cks1 amplification and overexpression in breast cancer. Biochem Biophys Res Commun 2009; 379:1107-13. [PMID: 19161979 DOI: 10.1016/j.bbrc.2009.01.028] [Citation(s) in RCA: 22] [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: 01/04/2009] [Accepted: 01/08/2009] [Indexed: 12/21/2022]
Abstract
Gain of chromosome 1q is a common event in many kinds of carcinomas. The Cks1 gene, located at 1q21, is required for p27 ubiquitination by the SCF(skp2) ubiquitinating machinery. In the present study, we found that Cks1 gene amplification was highly correlated with protein overexpression. Statistical analysis showed that amplification and overexpression of Cks1 were strongly associated with lymph node metastasis and poor prognosis. At the molecular level, knockdown of Cks1 expression by RNA interference inhibited the growth of MDA-MB-231 cells, damaged cell migration and invasion ability. Knockdown of Cks1 expression promoted apoptosis of breast cancer cells and a wobble mutant of Cks1 that was resistant to Cks1 siRNA can rescue this effect. Overexpression of Cks1 inhibited the apoptosis of breast cancer cells through the MEK-Erk pathway. These data suggest that Cks1 is an oncogene in the 1q21 amplicon and plays an important role for breast cancer development.
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Affiliation(s)
- Xiao-Chun Wang
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, China
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Abstract
Vertebrate embryonic patterning requires several conserved inductive signals-including Nodal, Bmp, Wnt and Fgf signals. Nodal, which is a member of the transforming growth factor beta (TGFbeta) superfamily, activates a signal transduction pathway that is similar to that of other TGFbeta members. Nodal genes, which have been identified in numerous vertebrate species, are expressed in specific cell types and tissues during embryonic development. Nodal signal transduction has been shown to play a pivotal role in inducing and patterning mesoderm and endoderm, and in regulating neurogenesis and left-right axis asymmetry. Antagonists, which act at different steps in the Nodal signal transduction pathway, have been shown to tightly modulate the inductive activity of Nodal.
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Affiliation(s)
- T Tian
- Laboratory of Developmental Biology, State Key Laboratory of Biomembrane and Membrane Biotechnology, Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, China
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Wang Y, Meng A, Lang H, Brown SA, Konopa JL, Kindy MS, Schmiedt RA, Thompson JS, Zhou D. Activation of nuclear factor kappaB In vivo selectively protects the murine small intestine against ionizing radiation-induced damage. Cancer Res 2004; 64:6240-6. [PMID: 15342410 DOI: 10.1158/0008-5472.can-04-0591] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Exposure of mice to total body irradiation induces nuclear factor kappaB (NFkappaB) activation in a tissue-specific manner. In addition to the spleen, lymph nodes, and bone marrow, the tissues that exhibit NFkappaB activation now include the newly identified site of the intestinal epithelial cells. NFkappaB activated by total body irradiation mainly consists of NFkappaB p50/RelA heterodimers, and genetically targeted disruption of the NFkappaB p50 gene in mice significantly decreased the activation. By comparing tissue damage and lethality in wild-type and NFkappaB p50 knockout (p50-/-) mice after they were exposed to increasing doses of total body irradiation, we additionally examined the role of NFkappaB activation in total body irradiation-induced tissue damage. The results show that p50-/- mice are more sensitive to total body irradiation-induced lethality than wild-type mice (LD50/Day 7: wild-type = 13.12 Gy versus p50-/- = 7.75 Gy and LD50/Day 30: wild-type = 9.31 Gy versus p50-/- = 7.81 Gy). The increased radiosensitivity of p50-/- mice was associated with an elevated level of apoptosis in intestinal epithelial cells and decreased survival of the small intestinal crypts compared with wild-type mice (P < 0.01). In addition, RelA/TNFR1-deficient (RelA/TNFR1-/-) mice also exhibited a significant increase in intestinal epithelial cell apoptosis after they were exposed to total body irradiation as compared with TNFR1-deficient (TNFR1-/-) mice (P < 0.01). In contrast, no significant increase in total body irradiation-induced apoptosis or tissue injury was observed in bone marrow cells, spleen lymphocytes, and the liver, heart, lung, and kidney of p50-/- mice in comparison with wild-type mice. These findings indicate that activation of NFkappaB selectively protects the small intestine against ionizing radiation-induced damage.
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Affiliation(s)
- Yong Wang
- Departments of Pathology, Medical University of South Carolina, Charleston, South Carolina 29425, USA
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Wang Y, Meng A, Zhou D. Inhibition of phosphatidylinostol 3-kinase uncouples H2O2-induced senescent phenotype and cell cycle arrest in normal human diploid fibroblasts. Exp Cell Res 2004; 298:188-96. [PMID: 15242773 DOI: 10.1016/j.yexcr.2004.04.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2004] [Revised: 04/08/2004] [Indexed: 11/23/2022]
Abstract
Exposure of WI38 human diploid fibroblasts (HDFs) to hydrogen peroxide (H2O2) induced premature senescence. The senescent HDFs were permanently arrested and exhibited a senescent phenotype including enlarged and flattened cell morphology and increased senescence-associated beta-galactosidase (SA-beta-gal) activity. The induction of HDF senescence was associated with an activation of p53, increased expression of p21Cip1/WAF1, and hypophosphorylation of retinoblastoma protein (Rb), while no changes in the expression of p16Ink4a, p27Kip1, and p14Arf were observed. Exposure of WI38 cells to H2O2 also selectively activated phosphatidylinostol 3-kinase (PI3 kinase) and mitogen-activated protein kinase (MAPK) kinase (MEK), while no changes in p38 MAPK and Jun kinase (JNK) activities were observed. Selective inhibition of PI3 kinase activity with LY294002 abrogated H2O2-induced cell enlargement and flattened morphology and significantly attenuated the increase in SA-beta-gal activity, but did not affect H2O2-induced cell cycle arrest. In contrast, selective inhibition of MEK and p38 MAPK with PD98059 and SB203580, respectively, produced no significant effect on H2O2-induced senescent phenotype and cell cycle arrest. These findings demonstrate that expression of the senescent phenotype can be uncoupled from cell cycle arrest in prematurely senescent cells induced by H2O2 and does not contribute to the maintenance of permanent cell cycle arrest.
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Affiliation(s)
- Yong Wang
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston 29425, USA
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Meng A, Luberto C, Meier P, Bai A, Yang X, Hannun YA, Zhou D. Sphingomyelin synthase as a potential target for D609-induced apoptosis in U937 human monocytic leukemia cells. Exp Cell Res 2004; 292:385-92. [PMID: 14697345 DOI: 10.1016/j.yexcr.2003.10.001] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Tricyclodecan-9-yl-xanthogenate (D609) is a selective tumor cytotoxic agent. However, the mechanisms of action of D609 against tumor cells have not been well established. Using U937 human monocytic leukemia cells, we examined the ability of D609 to inhibit sphingomyelin synthase (SMS), since inhibition of SMS may contribute to D609-induced tumor cell cytotoxicity via modulating the cellular levels of ceramide and diacylglycerol (DAG). The results showed that D609 is capable of inducing U937 cell death by apoptosis in a dose- and time-dependent manner. The induction of U937 cell apoptosis was associated with an inhibition of SMS activity and a significant increase in the intracellular level of ceramide and decrease in that of sphingomyelin (SM) and DAG, which resulted in an elevation of the ratio between ceramide and DAG favoring the induction of apoptosis. In addition, incubation of U937 cells with C(6)-ceramide and/or H7 (a selective PKC inhibitor) reduced U937 cell viability; whereas pretreatment of the cells with a PKC activator, PMA or 1-oleoyl-2-acetylglycerol (OAG), attenuated D609-induced U937 cell apoptosis. These results suggest that SMS is a potential target of D609 and inhibition of SMS may contribute to D609-induced tumor cell death via modulation of the cellular levels of ceramide and DAG.
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Affiliation(s)
- Aimin Meng
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
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Meng A, Wang Y, Brown SA, Van Zant G, Zhou D. Ionizing radiation and busulfan inhibit murine bone marrow cell hematopoietic function via apoptosis-dependent and -independent mechanisms. Exp Hematol 2004; 31:1348-56. [PMID: 14662344 DOI: 10.1016/j.exphem.2003.08.014] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Ionizing radiation (IR) and busulfan (BU) are commonly used as preconditioning regimens for bone marrow transplantation (BMT). We examined whether induction of apoptosis in murine bone marrow (BM) hematopoietic cells contributes to IR- and BU-induced suppression of their hematopoietic function. METHODS The hematopoietic functions of hematopoietic stem cells (HSCs) and progenitors were analyzed by the cobblestone area-forming cell (CAFC) assay. Apoptosis was determined by measuring 3,3'-dihexyloxacarbocyanine iodide (DiCO6) uptake, annexin V staining, and/or sub-G(0/1) cells. Four cell types were studied: murine BM mononuclear cells (BM-MNCs), linage-negative hematopoietic cells (Lin-) cells), Lin- Scal+ c-kit+ cells, and Lin- Scal- c-kit+ cells by flow cytometry. RESULTS Exposure of BM-MNCs to IR (4 Gy) or incubation of the cells with BU (30 microM) resulted in a significant reduction in CAFC frequency (p<0.001). The survival fractions of various day-types of CAFC for the irradiated cells were less than 10%, while that for BU-treated cells was 71.3% on day 7 and progressively declined to 5.3% on day 35. Interestingly, IR significantly induced apoptosis in BM-MNCs, Lin- cells, HSCs, and progenitors, whereas BU failed to increase apoptosis in these cells. In addition, preincubation of BM-MNCs with z-Val-Ala-Asp (OCH3)-fluoromethylketone, methyl ester (z-VAD) attenuated IR-induced reduction in CAFC but not that induced by BU. CONCLUSION IR and BU differentially suppress the hematopoietic function of HSCs and progenitors by fundamentally different mechanisms. IR inhibits the function primarily by the induction of HSC and progenitor apoptosis. In contrast, BU suppresses HSC and progenitor function via an apoptosis-independent mechanism.
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Affiliation(s)
- Aimin Meng
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, 165 Ashley Avenue, Charleston, SC 29425, USA
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Meng A, Wang Y, Van Zant G, Zhou D. Ionizing radiation and busulfan induce premature senescence in murine bone marrow hematopoietic cells. Cancer Res 2003; 63:5414-9. [PMID: 14500376] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
Exposure of murine bone marrow (BM) cells to ionizing radiation (IR; 4 Gy) resulted in >95% inhibition of the frequency of various day types of cobblestone area-forming cells in association with the induction of apoptosis in hematopoietic stem cell alike cells (Lin(-) ScaI(+) c-kit(+) cells; IR: 64.8 +/- 0.4% versus control: 20.4 +/- 0.5%; P < 0.001) and progenitors (Lin(-) ScaI(-) c-kit(+) cells; IR: 46.2 +/- 1.4% versus control: 7.8 +/- 0.5%; P < 0.001). Incubation of murine BM cells with busulfan (BU; 30 micro M) for 6 h also inhibited the cobblestone area-forming cell frequency but failed to cause a significant increase in apoptosis in these two types of hematopoietic cells. After 5 weeks of long-term BM cell culture, 33% and 72% of hematopoietic cells survived IR- and BU-induced damage, respectively, as compared with control cells, but they could not form colony forming units-granulocyte macrophages. Moreover, these surviving cells expressed an increased level of senescence-associated beta-galactosidase, p16(Ink4a), and p19(Arf). These findings suggest that IR inhibits the function of hematopoietic stem cell alike cells and progenitors primarily by inducing apoptosis, whereas BU does so mainly by inducing premature senescence. In addition, induction of premature senescence in BM hematopoietic cells also contributes to IR-induced inhibition of their hematopoietic function. Interestingly, the induction of hematopoietic cell senescence by IR, but not by BU, was associated with an elevation in p53 and p21(Cip1/Waf1) expression. This suggests that IR induces hematopoietic cell senescence in a p53-p21(Cip1/Waf1)-dependent manner, whereas the induction of senescence by BU bypasses the p53-p21(Cip1/Waf1) pathway.
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Affiliation(s)
- Aimin Meng
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina 29425, USA
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Zhao CT, Shi KH, Su Y, Liang LY, Yan Y, Postlethwait J, Meng AM. Two variants of zebrafish p100 are expressed during embryogenesis and regulated by Nodal signaling. FEBS Lett 2003; 543:190-5. [PMID: 12753931 DOI: 10.1016/s0014-5793(03)00445-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Human p100 protein was first identified as a transcriptional coactivator of Epstein-Barr virus nuclear antigen 2, and has been shown to be a coactivator of other cellular transactivators. Its roles in development of vertebrate embryos, however, have not been reported. We have identified a zebrafish ortholog of the human p100 coactivator. The zebrafish p100 transcript is processed to two alternative variants, long and short forms, referred to as p100L and p100S, respectively. Both GFP-p100L and GFP-p100S fusion proteins are located in the cytoplasm of transfected culture cells and microinjected embryonic cells. Analysis of transcripts with Northern blots revealed the presence of p100L and lower amounts of p100S mRNAs from the one-cell stage throughout the life cycle. Whole-mount in situ hybridization shows that p100L and p100S share the same spatiotemporal expression pattern. Their zygotic expression is initially restricted to axial mesoderm precursors during gastrulation, and then spreads over other tissues during segmentation, and finally is constrained to some internal organs at day 5. We also find that Nodal signaling is essential for the zygotic expression of p100. These studies pave the way to understanding in depth the role of p100 during vertebrate embryogenesis.
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Affiliation(s)
- C T Zhao
- Department of Biological Sciences and Biotechnology, Protein Sciences Laboratory of the MOE, Tsinghua University, 100084, Beijing, PR China
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Xu D, Wu Y, Wang P, Xu Y, Meng A, Li H, Liu Z, Zhu R. [Study on making pneumoconiosis model and method of lung lavage in rabbit]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2002; 20:131-3. [PMID: 14694631] [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: 04/27/2023]
Abstract
OBJECTIVE To provide an intact rabbit pneumoconiosis model and a method of lung lavage for studying the pathogenesis and treatment of pneumoconiosis. METHODS The dust particles(< or = 5 microns diameter) were poured into the trachea of rabbit by trachea spile. The lung lavage of rabbit was carried out by the improved trachea catheter method. RESULTS The rabbit lungs exposed to coal dust showed many black dust spots and there were proliferation of fibroblasts. The rabbit lungs exposed to silica dust showed nodules and several fusing nodules. The X-ray film showed that there were small irregular shadows, or fusing together into flake-like or round shadows in both lungs. The recovery rate of the lung lavage was 89%-94%. CONCLUSION The model made by trachea spile and the method of lung lavage by the improved trachea catheter were simple, safe and without being injured.
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Affiliation(s)
- Dong Xu
- Department of Occupational Health and Toxicology, Zhengzhou University, Zhengzhou, 450052, China
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Meng AM, Bruneau RJ. Location of contraceptive implant capsules. AJR Am J Roentgenol 1995; 165:1010-1. [PMID: 7676952 DOI: 10.2214/ajr.165.4.7676952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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