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Que J, Cao Q, Sui T, Du S, Kong D, Cao X. Effect of FK506 in reducing scar formation by inducing fibroblast apoptosis after sciatic nerve injury in rats. Cell Death Dis 2013; 4:e526. [PMID: 23470533 PMCID: PMC3613834 DOI: 10.1038/cddis.2013.56] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We previously demonstrated that FK506, a generally applied immunosuppressant in organ transplantation, could promote peripheral nerve regeneration through reducing scar formation. However, little is known about how FK506 reduces scar formation. Herein we investigated the influence of FK506 on fibroblast proliferation and its correlation with scar formation after sciatic nerve injury in rats, and further explored the effect of FK506 on fibroblast proliferation and apoptosis in vitro. Masson staining and immunohistochemistry revealed that scar area and fibroblast number in the nerve anastomosis of sciatic nerve-injured rats were significantly reduced after FK506 administration. The scar area had a significant positive correlation with the fibroblast number, as detected by linear correlation analysis. CCK-8 assay and flow cytometry indicated that FK506 also inhibited proliferation and induced apoptosis of fibroblasts in vitro. It was primarily phosphorylation of JNK and ERK that were activated during the apoptosis of fibroblast. Pretreatment of cells with JNK inhibitor, SP600125, or ERK inhibitor, PD98059, could inhibit FK506-induced fibroblast apoptosis, respectively. Moreover, simultaneous application of both inhibitors had additive roles in cell protection from apoptosis. These results suggest that FK506-induced fibroblast apoptosis contributes to the suppression of fibroblast proliferation and then results in the reduction of scar formation in sciatic nerve-injured rat, and that JNK and ERK are involved in FK506-induced fibroblast apoptosis.
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Warlick ED, Cao Q, Miller J. Bortezomib and vorinostat in refractory acute myelogenous leukemia and high-risk myelodysplastic syndromes: produces stable disease but at the cost of high toxicity. Leukemia 2013; 27:1789-91. [PMID: 23446311 DOI: 10.1038/leu.2013.61] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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103
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Feng F, Prensner J, Chen W, Iyer M, Cao Q, Wilder-Romans K, Lawrence T, Chinnaiyan A. A Tissue-specific Long Noncoding RNA Controls Homologous Recombination in Prostate Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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104
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Tao L, Chen J, Zhou H, Qin C, Li P, Cao Q, Li J, Ju X, Zhu C, Wang M, Zhang Z, Shao P, Yin C. A functional polymorphism in the CYR61 (IGFBP10) gene is associated with prostate cancer risk. Prostate Cancer Prostatic Dis 2012; 16:95-100. [PMID: 23045290 DOI: 10.1038/pcan.2012.41] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND CYR61 (cysteine-rich protein 61, also named IGFBP10) is a secreted signaling molecule that promotes angiogenesis and tumor growth. The goal of this study is to determine whether a functional polymorphism in the promoter region of the CYR61 gene (rs3753793) is associated with prostate cancer (PCa) risk and gene expression in Chinese patients. METHODS A total of 665 patients diagnosed with PCa and 703 cancer-free controls were genotyped in this hospital-based case-control study, and 26 PCa tissue samples were evaluated for mRNA expression of CYR61 by real-time quantitative reverse-transcription PCR. RESULTS Men carrying the G allele of rs3753793 (TG+GG) had significantly lower risk of PCa when compared with the TT genotype (odds ratio (OR) = 0.76, 95% confidence interval (CI) = 0.61-0.95). The association was generally more pronounced among subgroups of PCa patients with advanced stage (OR = 0.70, 95% CI = 0.53-0.94), Gleason score >7 (OR = 0.63, 95% CI = 0.46-0.86) and PSA>20 ng ml(-1) (OR = 0.68, 95% CI = 0.53-0.88). Prostate tumors derived from cases with the GT/GG genotypes had significantly lower levels of CYR61 mRNA when compared with cases with the TT genotypes (P = 0.02). CONCLUSIONS Our results indicate that the genetic variation of rs3753793 in the CYR61 promoter may contribute to genetic predisposition to PCa and intra-tumor expression gene expression.
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Duan B, Cao Q. Hierarchically porous Co3O4 film prepared by hydrothermal synthesis method based on colloidal crystal template for supercapacitor application. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.01.004] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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106
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Jin L, Cao Q. Effect of gemfibrozil on the pharmacokinetics of mitiglinide in rats. ACTA ACUST UNITED AC 2012; 62:40-5. [PMID: 22331762 DOI: 10.1055/s-0031-1295425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
A sensitive and specific method was developed and validated for the determination of mitiglinide in plasma using LC-MS/MS. The effect of gemfibrozil on the pharmacokinetics of orally administered mitiglinide in rats was investigated. The validated method in positive electrospray ionization mode using MRM and fully validated according to commonly accepted criteria. The desired sensitivity of mitiglinide was achieved with an LOQ of 0.5 ng/mL and the short run time was suitable for analysis of the large batches of samples. The method was successfully used to analyze rats plasma samples for application in pharmacokinetic studies. Pharmacokinetic parameters of mitiglinide were determined in rats following oral (0.25, 0.5, 1 mg/kg) administration to rats in the presence and absence of gemfibrozil (1 mg/kg). Compared to those animals in an oral control group (given mitiglinide alone), the area under the plasma concentration-time curve (AUC) of mitiglinide were increased significantly by 2.8, 3.5, 4.1-fold (0.25, 0.5, 1 mg/kg) by gemfibrozil, respectively. Consequently, the bioavailability of mitiglinide in the presence of gemfibrozil was significantly enhanced compared to that in oral control group (only mitiglinide). Gemfibrozil significantly enhanced the oral bioavailability of mitiglinide, suggesting that concurrent use of gemfibrozil and mitiglinide should be monitored closely for potential drug interactions.
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Chen B, Wang YY, Shen Y, Zhang WN, He HY, Zhu YM, Chen HM, Gu CH, Fan X, Chen JM, Cao Q, Yang G, Jiang CL, Weng XQ, Zhang XX, Xiong SM, Shen ZX, Jiang H, Gu LJ, Chen Z, Mi JQ, Chen SJ. Newly diagnosed acute lymphoblastic leukemia in China (I): abnormal genetic patterns in 1346 childhood and adult cases and their comparison with the reports from Western countries. Leukemia 2012; 26:1608-16. [PMID: 22382891 DOI: 10.1038/leu.2012.26] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
It has been generally acknowledged that the diagnosis, treatment and prognosis evaluation of leukemia largely rely on an adequate identification of genetic abnormalities. A systemic analysis of genetic aberrations was performed in a cohort of 1346 patients with newly diagnosed acute lymphoblastic leukemia (ALL) in China. The pediatric patients had higher incidence of hyperdiploidy and t(12;21) (p13;q22)/ETV6-RUNX1 than adults (P<0.0001); in contrast, the occurrence of Ph and Ik6 variant of IKZF1 gene was much more frequent in adult patients (all P<0.0001). In B-ALL, the existence of Ik6 and that of BCR-ABL were statistically correlated (P<0.0001). In comparison with Western cohorts, the incidence of t(9;22) (q34;q11)/BCR-ABL (14.60%) in B-ALL and HOX11 expression in T-ALL (25.24%) seemed to be much higher in our group, while the incidence of t(12;21) (p13;q22)/ETV6-RUNX1 (15.34%) seemed to be lower in Chinese pediatric patients. The occurrence of hyperdiploidy was much lower either in pediatric (10.61% vs 20-38%) or adult patients (2.36% vs 6.77-12%) in our study than in Western reports. In addition, the frequencies of HOX11L2 in adult patients were much higher in our cohort than in Western countries (20.69% vs 4-11%). In general, it seems that Chinese ALL patients bear more adverse prognostic factors than their Western counterparts do.
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Lund T, Verneris M, Tolar J, Cao Q, Weisdorf D, Wagner J, Brunstein C. Encouraging Survival for Patients Who Had a Second Umbilical Cord Blood Transplant for Graft Failure. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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109
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Bachanova V, Karagulle Kendi A, Froelich J, Cao Q, Celalettin U, Burns L. Pre-Transplant Positron Emission Tomography (PET) Scan Is Not Predictive of Relapse and Survival in Non-Hodgkin Lymphoma (NHL) Patients Undergoing Allogeneic Transplantation. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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110
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Christiansen E, Trotz B, Cao Q, Lipsitz E, Weigel B, Stefanski H, Verneris M, Burke M, Smith A. Early Hematopoietic Stem Cell Transplant Is Associated with Improved Outcomes in Children with MDS. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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111
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Zhao HX, Yoon SF, Tong CZ, Liu CY, Wang R, Cao Q. Thermal Effects and Small Signal Modulation of 1.3-μm InAs/GaAs Self-Assembled Quantum-Dot Lasers. NANOSCALE RESEARCH LETTERS 2011; 6:37. [PMID: 27502659 PMCID: PMC3211460 DOI: 10.1007/s11671-010-9798-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Accepted: 09/10/2010] [Indexed: 05/31/2023]
Abstract
We investigate the influence of thermal effects on the high-speed performance of 1.3-μm InAs/GaAs quantum-dot lasers in a wide temperature range (5-50°C). Ridge waveguide devices with 1.1 mm cavity length exhibit small signal modulation bandwidths of 7.51 GHz at 5°C and 3.98 GHz at 50°C. Temperature-dependent K-factor, differential gain, and gain compression factor are studied. While the intrinsic damping-limited modulation bandwidth is as high as 23 GHz, the actual modulation bandwidth is limited by carrier thermalization under continuous wave operation. Saturation of the resonance frequency was found to be the result of thermal reduction in the differential gain, which may originate from carrier thermalization.
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Singh SN, Cao Q, Gojo I, Rapoport AP, Akpek G. Durable complete remission after single agent decitabine in AML relapsing in extramedullary sites after allo-SCT. Bone Marrow Transplant 2011; 47:1008-9. [PMID: 22080965 DOI: 10.1038/bmt.2011.210] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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113
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Zhou SZ, Hu JZ, ZHou H, Cao Q, Cheng XS, Hong K. Genetic study of ischemia-induced ventricular arrhythmia associated with potassium channels. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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114
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Qin C, Cao Q, Ju X, Wang M, Meng X, Zhu J, Yan F, Li P, Ding Q, Chen J, Gu M, Zhang W, Yin C, Zhang Z. The polymorphisms in the VHL and HIF1A genes are associated with the prognosis but not the development of renal cell carcinoma. Ann Oncol 2011; 23:981-9. [PMID: 21778301 DOI: 10.1093/annonc/mdr325] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The von Hippel-Lindau (VHL) tumor suppressor gene and hypoxia-inducible factor-1α (HIF1A) play a pivotal role in renal carcinogenesis. This study was aimed to clarify the influence of VHL and HIF1A polymorphisms on renal cell cancer (RCC) susceptibility and survival. SUBJECTS AND METHODS We genotyped four potentially functional single-nucleotide polymorphisms (rs779805 in VHL and rs11549465, rs11549467, and rs2057482 in HIF1A) and assessed their associations with RCC risk, clinicopathologic parameters in a case-control study of 620 patients and 623 controls, and the prognosis of RCC in a cohort of 311 patients. RESULTS No significant differences in VHL or HIF1A genotypes were observed between RCC cases and controls. However, individuals with ≥2 variant alleles of the four polymorphisms were associated with less frequent lymph node metastasis and lower clinical stage (P = 0.032 and P = 0.041, respectively). And the number of variant alleles was associated with improved survival in a dose-response manner (P(trend) = 0.013). Furthermore, multivariate Cox regression analysis showed that the number of variant alleles (≥1 versus 0) was an independent prognostic factor for RCC survival (P = 0.036) together with clinical stage and tumor grade. CONCLUSION The VHL and HIF1A polymorphisms may not influence RCC susceptibility but may jointly influence RCC progression and survival.
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115
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Cao Q, Kaur C, Wu CY, Lu J, Ling EA. Nuclear factor-kappa β regulates Notch signaling in production of proinflammatory cytokines and nitric oxide in murine BV-2 microglial cells. Neuroscience 2011; 192:140-54. [PMID: 21729740 DOI: 10.1016/j.neuroscience.2011.06.060] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 06/21/2011] [Accepted: 06/21/2011] [Indexed: 11/25/2022]
Abstract
Microglial cells exhibit Notch-1 signaling expression which is enhanced upon activation. We reported previously that enhanced Notch-1 expression in activated microglia modulates production of proinflammatory cytokines and nitric oxide (NO). Furthermore, Notch-1 modulates transcription factor nuclear factor-kappa B (NF-κB). This study was aimed to investigate if NF-κB reciprocally modulates Notch signaling in BV-2 cells. In this connection, the cells were pretreated with caffeic acid phenethyl ester (Cape) followed by stimulating the cells with lipopolysaccharide (LPS). Cape+LPS treatment resulted in reduced translocation of NF-κB into the nucleus. Concomitantly, NF-κB DNA binding activity and the mRNA and protein expression levels of NF-κB/p65, Notch-1, intracellular domain of Notch-1 receptor (NICD), Hes-1, tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β) and inducible nitric oxide synthase (iNOS) along with nitrite level were significantly reduced. Additionally, flow cytometry analysis showed a decrease in expression levels of NF-κB/p65, Notch-1, NICD but an increase in that of signal transducers and activators of transcription 3 (Stat3). Furthermore, nuclear Hes-1, phosphorylated Stat3 (p-Stat3) and recombination signal-binding protein 1 for J-Kappa (RBP-JK) expression levels were significantly suppressed. The present results suggest that Cape inhibits NF-κB activation through suppressing its interaction with DNA. Cape-induced reduction of Hes-1 may be attributed to decreased interaction between NICD and RBP-JK whose levels were reduced concurrently. Hes-1 reduction may lead to decreased production of inflammatory cytokines and NO. It is concluded that NF-κB can modulate Notch-1 signaling. Both pathways operate synergistically for production of proinflammatory cytokines and NO in activated microglia.
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Cao Q, van der Hilst RD, de Hoop MV, Shim SH. Seismic Imaging of Transition Zone Discontinuities Suggests Hot Mantle West of Hawaii. Science 2011; 332:1068-71. [PMID: 21617072 DOI: 10.1126/science.1202731] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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117
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Banerjee R, Mani RS, Russo N, Scanlon CS, Tsodikov A, Jing X, Cao Q, Palanisamy N, Metwally T, Inglehart RC, Tomlins S, Bradford C, Carey T, Wolf G, Kalyana-Sundaram S, Chinnaiyan AM, Varambally S, D'Silva NJ. The tumor suppressor gene rap1GAP is silenced by miR-101-mediated EZH2 overexpression in invasive squamous cell carcinoma. Oncogene 2011; 30:4339-49. [PMID: 21532618 PMCID: PMC3154567 DOI: 10.1038/onc.2011.141] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Rap1GAP is a critical tumor suppressor gene that is downregulated in multiple aggressive cancers, such as head and neck squamous cell carcinoma, melanoma and pancreatic cancer. However, the mechanistic basis of rap1GAP downregulation in cancers is poorly understood. By employing an integrative approach, we demonstrate polycomb-mediated repression of rap1GAP that involves Enhancer of Zeste Homolog 2 (EZH2), a histone methyltransferase in head and neck cancers. We further demonstrate that the loss of miR-101 expression correlates with EZH2 upregulation, and the concomitant downregulation of rap1GAP in head and neck cancers. EZH2 represses rap1GAP by facilitating the trimethylation of histone 3 at lysine 27, a mark of gene repression, and also hypermethylation of rap1GAP promoter. These results provide a conceptual framework involving a microRNA-oncogene-tumor suppressor axis to understand head and neck cancer progression.
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118
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Cao Q, Li P, Lu J, Dheen ST, Kaur C, Ling EA. Nuclear factor-κB/p65 responds to changes in the Notch signaling pathway in murine BV-2 cells and in amoeboid microglia in postnatal rats treated with the γ-secretase complex blocker DAPT. J Neurosci Res 2011; 88:2701-14. [PMID: 20648656 DOI: 10.1002/jnr.22429] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Microglial cells constitutively express Notch-1 and nuclear factor-kappaB/p65 (NF-kappaB/p65), and both pathways modulate production of inflammatory mediators. This study sought to determine whether a functional relationship exists between them and, if so, to investigate whether they synergistically regulate common microglial cell functions. By immunofluorescence labeling, real-time polymerase chain reaction (RT-PCR), flow cytometry, and Western blot, BV-2 cells exhibited Notch-1 and NF-kappaB/p65 expression, which was significantly up-regulated in cells challenged with lipopolysaccharide (LPS). This was coupled with an increase in expression of Hes-1, tumor necrosis factor-alpha (TNF-alpha), and interleukin-1beta (IL-1beta). In BV-2 cells pretreated with N-[N-(3,5-difluorophenacetyl)-1-alany1]-S-phenyglycine t-butyl ester (DAPT), a gamma-secretase inhibitor, followed by LPS stimulation, Notch-1 expression level was enhanced but that of all other markers was suppressed. Additionally, Hes-1 expression and NF-kappaB nuclear translocation decreased as shown by flow cytometry. Notch-1's modulation of NF-kappaB/p65 was also evidenced in amoeboid microglial cells (AMC) in vivo. In 5-day-old rats given intraperitoneal injections of LPS, Notch-1, NF-kappaB/p65, TNF-alpha, and IL-1beta immunofluorescence in AMC was markedly enhanced. However, in rats given an intraperitoneal injection of DAPT prior to LPS, Notch-1 labeling was augmented, but that of TNF-alpha and IL-1beta was reduced. The results suggest that blocking of Notch-1 activation with DAPT would reduce the level of its downstream end product Hes-1 along with suppression of NF-kappaB/p65 translocation, resulting in suppressed production of proinflammatory cytokines. It is concluded that Notch-1 signaling can trans-activate NF-kappaB/p65 by amplifying NF-kappaB/p65-dependent proinflammatory functions in activated microglia.
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Op den Camp R, Streng A, De Mita S, Cao Q, Polone E, Liu W, Ammiraju JSS, Kudrna D, Wing R, Untergasser A, Bisseling T, Geurts R. LysM-Type Mycorrhizal Receptor Recruited for Rhizobium Symbiosis in Nonlegume Parasponia. Science 2010; 331:909-12. [DOI: 10.1126/science.1198181] [Citation(s) in RCA: 208] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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120
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Cao Q, Qian M, Wang XF, Wang B, Wu HW, Zhu XJ, Wang YW, Guo J. Negative Feedback Regulation of Raf/MEK/ERK Cascade After Sublethal Cerebral Ischemia in the Rat Hippocampus. Neurochem Res 2010; 36:153-62. [DOI: 10.1007/s11064-010-0285-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2010] [Indexed: 10/19/2022]
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121
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Beck JC, Cao Q, Trotz B, Smith AR, Weigel BJ, Verneris MR, Burke MJ. Allogeneic hematopoietic cell transplantation outcomes for children with B-precursor acute lymphoblastic leukemia and early or late BM relapse. Bone Marrow Transplant 2010; 46:950-5. [PMID: 20856210 DOI: 10.1038/bmt.2010.217] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Large registry studies have shown superior disease-free survival (DFS) with matched sibling donor (MSD) allogeneic hematopoietic cell transplantation (allo-HCT) over chemotherapy alone for patients with B-precursor acute lymphoblastic leukemia (ALL) and a late BM relapse. As most of these patients will not have an MSD, the decision to pursue an unrelated allo-HCT in second remission (CR2) or await a future relapse and perform HCT in third remission (CR3) continues to be debated. Between 1990 and 2006, 41 children with relapsed B-precursor ALL received a myeloablative allo-HCT at the University of Minnesota. Graft sources consisted of matched related donor (n=11), matched unrelated donor (n=9), and unrelated umbilical cord blood (n=21). Before allo-HCT, 15 patients had an early relapse (<36 months from diagnosis) and 26 had an initial late relapse (36 months from diagnosis). In all, 30 patients (73%) were in CR2 and 11 were in CR3 (27%) at time of allo-HCT. Five year OS/DFS were similar for patients with an early or late marrow relapse, but there was inferior DFS among late-relapse patients transplanted in CR3 compared with CR2 (30% vs 75%, P=0.04). These results suggest that allo-HCT should be pursued in children after a first marrow relapse, rather than waiting for subsequent recurrence.
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Cao Q, Zheng D, Wang YP, Harris DCH. Macrophages and dendritic cells for treating kidney disease. Nephron Clin Pract 2010; 117:e47-52. [PMID: 20814218 DOI: 10.1159/000320595] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Based on new understanding of the diverse biological functions of macrophages and dendritic cells (DC), the focus of studies on these cells has been expanded from their pathogenic role in renal diseases to include their potential to regulate inflammation and restore renal architecture and function. By exploiting their regulatory function, macrophages or DC have been used to treat experimental renal disease following their adoptive transfer. This review summarizes current progress in the therapeutic use of macrophages and DC in renal diseases. Key issues for ongoing research are discussed.
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Yu J, Cao Q, Yu J, Wu L, Dallol A, Li J, Chen G, Grasso C, Cao X, Lonigro RJ, Varambally S, Mehra R, Palanisamy N, Wu JY, Latif F, Chinnaiyan AM. The neuronal repellent SLIT2 is a target for repression by EZH2 in prostate cancer. Oncogene 2010; 29:5370-80. [PMID: 20622896 PMCID: PMC2948081 DOI: 10.1038/onc.2010.269] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The neuronal repellent SLIT2 is repressed in a number of cancer types primarily through promoter hypermethylation. SLIT2, however, has not been studied in prostate cancer. Through genome-wide location analysis we identified SLIT2 as a target of Polycomb group (PcG) protein EZH2. The EZH2-containing Polycomb repressive complexes bound to the SLIT2 promoter inhibiting its expression. SLIT2 was down-regulated in a majority of metastatic prostate tumors exhibiting a negative correlation with EZH2. This repressed expression could be restored by methylation inhibitors or EZH2-suppressing compounds. In addition, a low level of SLIT2 expression was associated with aggressive prostate, breast and lung cancers. Functional assays showed that SLIT2 inhibited prostate cancer cell proliferation and invasion. Thus, this study demonstrated for the first time epigenetic silencing of SLIT2 in prostate tumors, and supported SLIT2 as a potential biomarker for aggressive solid tumors. Importantly, PcG-mediated repression may serve as a precursor for the silencing of SLIT2 by DNA methylation in cancer.
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Li J, Wu L, Cao Q, Yuan Y, Yang L, Guo Z, Kaur C, Sivakumar V, Ling E, Wu C. Endothelins-1/3 and endothelin-A/B receptors expressing glial cells with special reference to activated microglia in experimentally induced cerebral ischemia in the adult rats. Neuroscience 2010; 167:665-77. [DOI: 10.1016/j.neuroscience.2010.02.062] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2009] [Revised: 02/11/2010] [Accepted: 02/23/2010] [Indexed: 01/23/2023]
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125
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Huang Y, Li J, Meng XM, Jiang GL, Li H, Cao Q, Yu SC, Lv XW, Cheng WM. Effect of triterpene acids of Eriobotrya japonica (Thunb.) Lindl. leaf and MAPK signal transduction pathway on inducible nitric oxide synthase expression in alveolar macrophage of chronic bronchitis rats. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2010; 37:1099-111. [PMID: 19938219 DOI: 10.1142/s0192415x09007521] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The goal of this study was to investigate the possible therapy mechanism of triterpene acids of Eriobotrya japonica (Thunb.) Lindl. Leaf (TAL) in alveolar macrophage (AM) of chronic bronchitis (CB) rats. CB model was established by injection of bacillus calmette guein (BCG) plus lipopolisacharide (LPS) in rats. TAL significantly inhibited the increased NO concentration, iNOS expression and phosphorylation of p38 MAPK in alveolar macrophages (AMs) of CB rats. Using in vivo test, we found that SB203580, a p38 MAPK inhibitor, (10 muM) significantly inhibited inducible nitric oxide synthase (iNOS) mRNA expression in AM. This data indicate that TAL highly decreases excessive iNOS expression and NO induction, and p38 MAPK signal transduction participates in iNOS expression and NO induction in AM of CB rats. The effect of TAL on iNOS expression in AM may be related to its inhibition of p38 MAPK signal transduction.
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