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Sökning: swepub > Larsson Anders > Ronquist Gunnar

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  • Carlsson, Lena, et al. (författare)
  • Mode of growth determines differential expression of prostasomes in cultures of prostate cancer cell lines and opens for studies of prostasome gene expression
  • 2006
  • Ingår i: Uppsala Journal of Medical Sciences. - 0300-9734. ; 111:3, s. 293-301
  • Tidskriftsartikel (refereegranskat)abstract
    • The exocrine secretion of the acinar gland cells in the human prostate consists of, among other components, a serous secretion and prostasomes. The prostasomes are functionally associated with both reproduction and prostate cancer development and are capable to raise autoantibodies at various pathologies. Therefore, we are trying to characterize prostasome antigens by analysing prostasome- producing cell lines of prostate cancers with the cDNA microarray technique. To obtain one state with synthesis of prostasomes and another state without synthesis, we checked whether the prostasome differentiation was influenced by the mode of growing the cells, that is, whether the cells had been growing on a solid support or on a flexible one.We studied the expression of prostasomes in the cell lines PC3, DU145 and LNCaP. We grew the cells with the following methods: Monocellular layers on microbeads, multicellular spheroids, single cells in suspension cultures, and xenotransplants in nude rats. The presence of prostasomes was examined by ELISA, immunocytochemistry or electron microscopy.The results showed that growing the cells on microbeads (solid support) produced a differentiation of prostasomes, while growing the cells in multicellular spheroids (flexible support) did not. Thus it should be possible to apply cDNA microarray analyses for characterizing the genes which are active at the cellular expression of prostasomes and then deduce the prostasome antigens.
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  • Inayat, S, et al. (författare)
  • High levels of cathepsins B, L and S in human seminal plasma and their association with prostasomes
  • 2012
  • Ingår i: Andrologia. - 0303-4569. ; 44:6, s. 423-427
  • Tidskriftsartikel (refereegranskat)abstract
    • Semen is a heterogenous and complex fluid with different functions, some of them well known, others still obscure. The aim of this study was to investigate the presence of cathepsins B, S and L in human seminal plasma and their possible associations with other semen variables. Cathepsin B, L and S concentrations were measured in seminal plasma from 99 men utilising commercial ELISA kits. Seminal plasma cathepsin B was approximately 70 times higher, while the cathepsin L values were approximately 500 times higher and the cathepsin S values approximately 40 times higher in seminal plasma than in a group of serum samples. The study shows that seminal plasma contains high levels of cathepsins B, L and S. All three cathepsins were also bound to the surface of prostasomes.
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  • Larsson, Anders, et al. (författare)
  • Antiprostasome antibodies : possible serum markers for prostate cancer metastasizing liability
  • 2006
  • Ingår i: Urologic Oncology. - 1078-1439. ; 24:3, s. 195-200
  • Tidskriftsartikel (refereegranskat)abstract
    • Prostasomes are secretory granules synthesized, stored, and secreted by normal and neoplastic human prostate epithelial cells. In prostate cancer, they are anticipated to be released into the blood circulation where they may be immunogenic. The aim of our study was to examine whether prostasome antibody presence in serum bears any prognostic significance for men with prostate cancer. We developed a sensitive and specific immunoassay (enzyme-linked immunosorbent assay) to establish the presence of antiprostasome antibodies in serum. The antiprostasome antibody titer in serum, sampled before any kind of therapy for prostate cancer, was examined together with clinicopathologic variables and outcome over a median follow-up of 350 days in 218 patients with verified prostate cancer. We detected these antibodies in 191 (88%) of these patients. This antibody titer did not correlate to serum values of prostate-specific antigen. Significant, inverse relationships were registered for antiprostasome antibody titer, and metastases to bone and/or lymph nodes (P = 0.035) and pT (P = 0.025). These results indicate that the antiprostasome antibody titer in serum may be a novel marker for prostate cancer liability to metastasize.
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