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Articles by Y Shu
Total Records ( 2 ) for Y Shu
  G Jin , L Xu , Y Shu , T Tian , J Liang , Y Xu , F Wang , J Chen , J Dai , Z Hu and H. Shen

Chromosome 5p15.33, containing TERT and CLPTM1L genes, was recently identified as one of the susceptible regions for lung cancer in Caucasian populations. We hypothesized that single-nucleotide polymorphisms (SNPs) identified in this region in Caucasians are also important in the development of lung cancer in Chinese population. To test this hypothesis, we genotyped two most significant SNPs reported in Caucasians, rs2736100A/C and rs402710C/T at 5p15.33, in a case–control study with 1221 non-small cell lung cancer (NSCLC) cases and 1344 cancer-free controls in a Chinese population. We found that rs2736100C allele in TERT gene was associated with a significantly increased risk of NSCLC with adjusted odds ratios of 1.26 [95% confidence interval (CI) = 1.05–1.51] and 1.31 (95% CI = 1.04–1.66) for one or two copies of the variant C allele, respectively. This significant association was more prominent among female (P for heterogeneity: 0.044), non-smokers (P for heterogeneity: 0.054) and/or the subjects with adenocarcinoma (P for heterogeneity: 0.058). However, no significant association was found between rs402710C/T and NSCLC risk. These results suggest that genetic variants in 5p15.33, especially in TERT gene, may also predispose the susceptibility of lung cancer, especially adenocarcinoma, in Chinese population.

  S Ju , Y Ge , H Qiu , B Lu , Y Qiu , J Fu , G Liu , Q Wang , Y Hu , Y Shu and X. Zhang

Dendritic cells (DCs) are responsible for the initiation of immune responses. Our study demonstrates a new pathway for generating a large quantity of stimulatory monocyte-derived DCs (Mo-DCs) from human monocytes using anti-4-1BB ligand (4-1BBL) mAb to trigger reverse signaling. The anti-4-1BBL-driven Mo-DCs (DCs-4-1BBL) not only express higher levels of CD86, CD83 and HLA-DR, when compared with the Mo-DCs matured by tumor necrosis factor , but also exhibit a unique phenotype that expresses lower levels of PD-L1. High levels of GM-CSF, M-CSF and Flt3 ligand (FL) were found in the anti-4-1BBL-differentiation culture. Neutralizing M-CSF, GM-CSF and FL inhibited Mo-DC proliferation stimulated by anti-4-1BBL mAb, suggesting that M-CSF, GM-CSF and FL are involved in cell proliferation stimulated by anti-4-1BBL. Further analysis of the DCs-4-1BBL showed increased secretion of Th1-type cytokines IL-12 and IFN- and decreased secretion of IL-10. DCs-4-1BBL induced much stronger proliferative responses in the mixed lymphocyte reaction assay when compared with DCs derived by GM-CSF. Moreover, DCs-4-1BBL preferentially induced Th1 responses. We have further demonstrated that anti-4-1BBL antibody stimulated nuclear translocation of NF-B from the cytoplasm in monocytes, suggesting that reverse signaling by 4-1BBL is likely responsible for mediating DC differentiation. Collectively, we have found that reverse signaling of 4-1BBL promotes the differentiation of potent Th1-inducing DCs from human monocytes.

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