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Sökning: WFRF:(de la Torre Manuel) > (2000-2004) > (2002)

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1.
  • Loskog, Angelica, et al. (författare)
  • Human urinary bladder carcinomas express adenovirus attachment and internalization receptors
  • 2002
  • Ingår i: Gene Therapy. - : Springer Science and Business Media LLC. - 0969-7128 .- 1476-5462. ; 9:9, s. 547-553
  • Tidskriftsartikel (refereegranskat)abstract
    • The use of adenoviral vectors as potent gene delivery systems requires expression of the Coxsackievirus/adenovirus receptor (CVADR) on the target cell surface. This receptor is important for virus attachment to the cell surface. For effective internalization of the vector into the target cell the integrins alpha(v)beta(3) and/or alpha(v)beta(5) are needed. Since there have been reports of loss of CVADR in bladder cancer cell lines, we wanted to investigate the expression of this receptor in bladder carcinoma biopsies. Surgical biopsies, as well as five human bladder cancer cell lines, were analyzed for expression of CVADR, the integrins alpha(v)beta(3) and alpha(v)beta(5) and MHC class I. Further, we studied the ability to transduce these cell lines using adenoviral vectors. Immunohistochemistry revealed that all biopsies (27/27) were positive for CVADR. Some variation in expression was evident, and superficially growing tumors stained more strongly than invasive ones. Most human tumors expressed the integrin alpha(v)beta(5) (14/24), whereas integrin alpha(v)beta(3) was less frequently seen (3/20). The established cell lines were efficiently transduced with adenoviral vectors, and transduction could be reduced with anti-CVADR antibodies. The abundance of appropriate viral receptors on tumor biopsy cells is a further argument for using adenoviral vectors in gene therapy of bladder cancer.
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2.
  • Wester, Kenneth, et al. (författare)
  • HER-2 : A possible target for therapy of metastatic urinary bladder carcinoma
  • 2002
  • Ingår i: Acta Oncologica. - : Informa UK Limited. - 0284-186X .- 1651-226X. ; 41:3, s. 282-288
  • Tidskriftsartikel (refereegranskat)abstract
    • Human epidermal growth factor receptor 2, HER-2, is overexpressed in various tumours, e.g. breast- and bladder tumours. The aim of this study was to predict the potential use of HER-2 receptors as targets in systemic treatment of disseminated bladder tumours. HER-2 expression was assessed in bladder carcinoma metastases and the corresponding primary tumours, and subsequently compared with the EGFR expression. HER-2 and EGFR expression was analysed by immunohistochemistry in formalin-fixed, paraffin-embedded tissues from 21 patients with metastatic bladder carcinoma. HER-2 was overexpressed in 81% of the primary tumours and in 67% of the metastases. All HER-2-positive metastases were from HER-2-positive primary tumours. The results for EG FR were 71% of both primary and metastases-positive tumours. In 90% of the primary tumours and 86% of the metastases, at least one of the receptors was overexpressed. These results suggest that HER-2 targeted therapy can be considered as an alternative or a complement to other modalities in the treatment of metastatic urinary bladder carcinoma.
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