alpha-Neup5Ac-(2--3)-beta-D-Galp-(1--4)-[alpha-L-Fucp-(1--3)]-D-GlcpNAc and Carcinoma--Renal-Cell

Changes in expression patterns of the sialyl Lewis antigens and MUC1 mucin can be considered as markers for the diagnosis of various cancers. However, there are no reports which have been devoted to analysis of differences in the sialyl Lewis antigens and MUC1 expression patterns as potential discrimination markers among different areas of clear cell renal cell carcinoma (ccRCC). The aim of this study was to determine the level of MUC1 and specific Lewis antigens on glycoproteins in three different areas: tumor (cancer tissue), intermediate zone (adjacent to tumor tissue) and normal renal cortex/medulla (uninvolved by tumor).. Study was performed on renal tissues taken from 30 patients with clear cell renal cell carcinoma. Relative amounts of sugar structures bound with proteins were determined by ELISA-like test with biotinylated lectins or monoclonal antibodies: anti-MUC1 and anti-sialyl Lewis(a/x). The study presented here provides novel information about relationship between MUC1 and sialyl Lewis antigens in the tumor, intermediate zone and noninvolved areas of normal renal tissue distant of tumor.. We have found statistically significant increase of MUC1 and sialic acid linked by α-2,3 bond with galactose in cancer tissue and in intermediate zone comparing to normal renal tissue distant of tumor. Moreover, we observed statistically significant increase of sialic acid linked by α-2,6 bond with Gal/GalNAc and sialyl Lewis(a/x) antigens in cancer tissues only, comparing to normal ones.. MUC1 and sialylated antigens can be involved in renal tumor development and can be considered as potential markers distinguishing normal renal tissue from intermediate zone and from cancer renal cells during ccRCC development.

Topics: Aged; Biomarkers, Tumor; Carcinoma, Renal Cell; Female; Humans; Kidney; Kidney Neoplasms; Lewis X Antigen; Male; Middle Aged; Mucin-1; Sialyl Lewis X Antigen

Certain carbohydrate-based biomarkers are known to correlate with cancer formation and progression. By targeting sialyl Lewis X, we have developed the first boronolectin-MS tag conjugate, which allows for MALDI-based imaging of cancer based on its cell surface carbohydrate.

Topics: Boron Compounds; Carcinoma, Renal Cell; Gene Expression Regulation, Neoplastic; Kidney Neoplasms; Lewis X Antigen; Molecular Imaging; Monosaccharides; Sialyl Lewis X Antigen; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization

To examine expression profiles of LewisX(Le(x))-related antigens, which have a possible role in hematogenous metastatic spread in various malignancies, in renal cell cancer (RCC) tissue in order to evaluate their prognostic value for patients with low-stage RCC.. Fifty-two patients with pT1-2N0M0 disease were evaluated for their expression patterns of Le(x)-related antigens using FH6 and CSLEX1 antibodies for sLe(x) and AG223 for 6-sulfo Le(x), immunohistochemically.. None of the expression levels of Le(x)-related antigens directed by the three antibodies related to the clinical outcomes of patients with low-stage RCC. However, combined use of FH6 and CSLEX1 antibodies enabled prognostic prediction, namely that patients with low intensity with FH6 and high intensity with CSLEX1 had a higher chance of disease progression and poor survival.. Expression levels Le(x)-related antigens determined by combined use of FH6 and CSLEX1 antibodies could be of value as a prognostic indicator for patients with low-stage RCC.

Topics: Antibodies, Monoclonal; Biomarkers, Tumor; Carcinoma, Renal Cell; Female; Humans; Immunoenzyme Techniques; Kidney Neoplasms; Lewis X Antigen; Male; Middle Aged; Neoplasm Staging; Oligosaccharides; Prognosis; Sialyl Lewis X Antigen

Interaction between tumor cells and endothelium plays a major role in cancer invasion and metastasis. Among various cell adhesion molecules, the cognate interaction between sialyl Lewis antigen expressed in the tumor cell surface and E-selectin expressed on endothelial cells is considered to be crucial for the tumor cell adhesion to the endothelium.. The sialyl Lewis X (sL(X)) expression in 45 specimens from renal cell carcinoma patients was examined using immunohistochemistry.. In this study, we demonstrate that the immunoreactivity for sL(X) in renal cell carcinoma specimens not only correlates with conventional histopathologic parameters but also serves as a useful indicator for the prognosis of renal cell carcinoma.. Since beneficial effect of cimetidine has been reported and ascribed to its inhibitory action on the expression of E-selectin, a ligand molecule of sialyl Lewis antigen, cimetidine may also show inhibitory effect on the tumor recurrence and metastasis of renal cell carcinoma with high level of sL(X) expression.

Topics: Adjuvants, Immunologic; Carcinoma, Renal Cell; Cimetidine; Humans; Immunohistochemistry; Kidney Neoplasms; Lewis Blood Group Antigens; Neoplasm Invasiveness; Neoplasm Metastasis; Oligosaccharides; Sialyl Lewis X Antigen

To investigate the clinical significance of nm23-H1 gene product in sarcomatous cancer cells, because this is known as a tumor-metastasis suppressor. Renal cell carcinoma with sarcomatoid cancer cells is characterized by high malignant potential and a poor prognosis.. We investigated the expression of nm23-H1 gene product in the carcinomatous and sarcomatous component (CC and SC) of renal cell carcinoma using immunohistochemical techniques and the relationships between the expression and clinicopathologic features. We also examined the expression of matrix metalloproteinase (MMP)-2, MMP-9, sialyl Lewis X, and c-erbB-2 in the SC because these proteins are regulated by the nm23-H1 gene or its products.. We examined 20 renal cell carcinoma specimens that contained an SC and CC. The CC of 12 of the 20 tumors stained positively for nm23-H1 gene product. In contrast, the SC of only 3 of the 20 stained positive. The reduced expression of nm23-H1 gene product in the SC correlated significantly with tumor invasion (P <0.01), but not with tumor size or metastasis. In contrast, the expression of the nm23-H1 gene product in the CC was not associated with these pathologic features. Expression of the nm23-H1 gene product correlated negatively with MMP-2 expression (r = -0.48, P = 0.03). Other factors did not show such significant correlations with nm23-H1 gene product expression.. Our results suggest that low expression of nm23-H1 gene products may play important roles in tumor invasion, and that this process is mediated in part by overexpression of MMP-2.

Topics: Aged; Antigens, Neoplasm; Carcinoma, Renal Cell; Female; Gene Expression; Humans; Kidney Neoplasms; Lewis X Antigen; Male; Matrix Metalloproteinase 2; Matrix Metalloproteinase 9; Middle Aged; Neoplasm Invasiveness; NM23 Nucleoside Diphosphate Kinases; Nucleoside-Diphosphate Kinase; Oligosaccharides; Receptor, ErbB-2; Sarcoma; Sialyl Lewis X Antigen

Monoclonal antibodies were used to study the expression of three recently characterized basement membrane components and two carbohydrate antigens in 11 renal-cell carcinomas, using immunohistological and biochemical techniques. The expression of several site-specific kidney antigens in renal-cell carcinoma were studied to determine the origin of the carcinoma and if it is possible further classify this type of carcinoma. Tubulointerstitial nephritis antigen (TIN) and two alpha-chains of type IV collagen, alpha 1 (IV) and alpha 3 (IV) were studied. In addition the expression of carbohydrate antigens Lex and SLex, which also exhibit site-specific distribution were characterized. Lex and SLex antibodies stained the majority of the tumours. TIN was expressed in 9 of 11 tumours, the alpha 1 (IV) chain was present in all 11, and the alpha 3 (IV) chain in two of the 11 tumours. Interestingly, the two alpha 3 (IV)-positive tumours were the same two that were negative for TIN. In normal tissue alpha 3 (IV) is found in distal tubules while TIN is found in proximal tubules. Our results are consistent with earlier observations that the proximal tubule is the origin of most renal-cell carcinomas, but the results also indicate that renal-cell carcinoma may originate from the distal tubule.

Topics: Antibodies, Monoclonal; Antigens, Surface; Carcinoma, Renal Cell; Cell Adhesion Molecules; Collagen; Humans; Immunohistochemistry; Kidney Neoplasms; Kidney Tubules, Distal; Kidney Tubules, Proximal; Lewis X Antigen; Membrane Glycoproteins; Oligosaccharides; Sialyl Lewis X Antigen; Telomere-Binding Proteins