Yonghua Wang

Government of the People's Republic of China, Peping, Beijing, China

Are you Yonghua Wang?

Claim your profile

Publications (4)5.37 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: The stimulatory and inhibitory coreceptors expressed by T lymphocytes are known to play critical roles in regulating cancer immunity. An array of inhibitory coreceptors involved in the inhibition of T-cell functions and the blockade of immune activation have been discovered in recent years, the most important of which are cytotoxic T-lymphocyte antigen-4 (CTLA-4), programmmed death-1 (PD-1), and B7 homolog 1 (B7-H1). Immunotherapies targeting T-cell coinhibitory molecules have proved to be effective in cancer treatment. Several kinds of monoclonal antibodies have been tested in preclinical studies, with better outcomes than conventional therapies in many malignancies. Common urological malignancies including renal cell carcinoma, bladder cancer and prostate cancer are supposed to be immunogenic cancer types and not so sensitive to conventional therapies as other malignancies. This review will focus on B7-H1/PD-1 blockade therapy in urological malignancies, summarizing the results of clinical trials as well as the challenges and prospects of this emerging immunotherapy.
    05/2015; DOI:10.5301/tj.5000326
  • [Show abstract] [Hide abstract]
    ABSTRACT: Bacillus Calmette-Guérin (BCG) has been used in the intravesical treatment of urothelial bladder cancer (UBC) for three decades. Despite its efficacy, intravesical BCG therapy is associated with some limitations such as side effects and BCG failure, which have inspired multiple ways to improve it. Recent advances have focused on recombinant BCG (rBCG) which provides a novel tactic for modification of BCG. To date, a number of rBCG strains have been developed and demonstrated to encourage efficacy and safety in preclinical and clinical studies. This review summarizes current rBCG strategies, concerns and future directions in UBC immunotherapy with an intention to encourage further research and eventually to inform clinical decisions.
    Expert Review of Anticancer Therapy 09/2014; DOI:10.1586/14737140.2015.961430 · 3.06 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Objective The aim of this study was to examine whether short hairpin RNA (shRNA) expressing lentiviral particles targeting B7-H1 infection could result in B7-H1 knockdown on dendritic cells (DCs) and to investigate whether B7-H1 silencing could augment the immune function of DCs and further elicit a more potent anti-tumor immune effect against bladder cancer cells in vitro. Methods Monocyte-derived DCs, which were generated from peripheral blood mononuclear cells, were infected by a recombinant lentivirus containing shRNA sequence aimed at B7-H1. After that, the infected DCs were pulsed by tumor antigens and used to stimulate cytotoxic T lymphocytes-based anti-tumor effect in vitro. Results The lentivirus-mediated shRNA delivery method efficiently and effectively silenced B7-H1 in DCs. Furthermore, the B7-H1 silencing enhanced the stimulatory capacity and the secretion of interleukin-12, but down-regulated interleukin-10 secretion. And more importantly, the anti-tumor effect of bladder cancer antigen-loaded DC vaccine in vitro was also potentially augmented. Conclusion This study suggests that a combination of B7-H1 knockdown and target antigen delivery could augment anti-tumor effects in vitro, which potentially provides a novel strategy in the immunotherapy of bladder cancer.
    OncoTargets and Therapy 08/2014; 7:1389-96. DOI:10.2147/OTT.S65367 · 2.31 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Objective The aim of this study was to study the expression and the clinical significance of B7-H1 on dendritic cells (DCs) in peripheral blood from patients with bladder cancer. Methods Peripheral blood mononuclear cell were disparted from 30 bladder cancer patients and 7 healthy controls by density gradient centrifugation and then co-cultured. The expression of B7-H1 on DCs were analyzed by flow cytometry. Results Expression of B7-H1 on DCs in bladder cancer was higher than healthy controls (P < 0.01). And the expression were strongly associated with the pathological grade and clinical stage of bladder cancer (P < 0.05). Conclusion The up-regulation of B7-H1 on DCs was strongly associated with neoplastic progression of bladder cancer. B7-H1/programmed death (PD)-1 signal pathway may also play an important role in immune escape of bladder cancer during initial phase of T cell immune response.
    The Chinese-German Journal of Clinical Oncology 06/2013; 12(6). DOI:10.1007/s10330-012-1171-x

Publication Stats

1 Citation
5.37 Total Impact Points

Institutions

  • 2014
    • Government of the People's Republic of China
      Peping, Beijing, China
  • 2013
    • Qingdao University
      • Department of Urology
      Tsingtao, Shandong Sheng, China