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Sialyl lewis tumor

Shuyi Wang, Chunxiao Zhang, Guozhou Wang, Boran Cheng, Yulei Wang, Fangfang Chen, Yuanyuan Chen, Maohui Feng, Bin Xiong
Circulating tumor cells (CTCs) have been considered as the origin of cancer metastasis. Thus, detection of CTCs in peripheral blood is of great value in different types of solid tumors. However, owing to extremely low abundance of CTCs, detection of them has been technically challenging. To establish a simple and efficient method for CTCs detection in patients with hepatocellular carcinoma (HCC), we applied biocompatible and transparent HA/CTS (Hydroxyapatite/chitosan) nanofilm to achieve enhanced topographic interactions with nanoscale cellular surface components, and we used sLex-AP (aptamer for carbohydrate sialyl Lewis X) to coat onto HA/CTS nanofilm for efficient capture of HCC CTCs, these two functional components combined to form our CTC-(BioT)Chip platform...
2016: Theranostics
Yi-Ling Yang, Bing-Bing Liu, Xinmin Zhang, Li Fu
CONTEXT: -Invasive micropapillary carcinoma (IMPC) is a distinct variant of mammary carcinoma in which tumor cells are arranged in morulelike clusters devoid of fibrovascular cores and situated within empty stromal spaces. Identification of IMPC can be achieved by the assessment of morphologic features in conjunction with the characteristic "inside-out" staining pattern of epithelial membrane antigen and sialyl Lewis X highlighted by immunohistochemical analysis. Although recognizing micropapillary architecture is often not challenging, the criteria for distinguishing between mixed and pure IMPC remain imprecise...
August 2016: Archives of Pathology & Laboratory Medicine
Jin-Xiao Liang, Yong Liang, Wei Gao
Many studies have shown that sialyl Lewis X (sLe(X)) is related to cancer prognosis and clinicopathology, but failed to provide conclusive results. We conducted the present meta-analysis to identify the association between sLe(X) overexpression and cancer prognosis. We searched studies in PubMed and Embase databases. Relative risk or hazard ratio with 95% confidence intervals were estimated with the Mantel-Haenszel random-effect method and 29 studies were included. Our meta-analysis showed that sLe(X) overexpression is significantly related to lymphatic invasion, venous invasion, T stage, N stage, M stage, tumor stage, recurrence, and overall survival...
2016: OncoTargets and Therapy
Alessandro Natoni, Matthew S Macauley, Michael E O'Dwyer
Aberrant glycosylation is a hallmark of cancer cells with increased evidence pointing to a role in tumor progression. In particular, aberrant sialylation of glycoproteins and glycolipids has been linked to increased immune cell evasion, drug evasion, drug resistance, tumor invasiveness, and vascular dissemination, leading to metastases. Hypersialylation of cancer cells is largely the result of overexpression of sialyltransferases (STs). Differentially, humans express twenty different STs in a tissue-specific manner, each of which catalyzes the attachment of sialic acids via different glycosidic linkages (α2-3, α2-6, or α2-8) to the underlying glycan chain...
2016: Frontiers in Oncology
Sara Ricardo, Lara Marcos-Silva, Cristina Valente, Ricardo Coelho, Rosa Gomes, Leonor David
Mucins are heavily glycosylated proteins overexpressed and associated with truncated or sialylated glycans upon malignant transformation. We previously identified a panel of four glyco-mucin profiles (MUC16/Tn, MUC16/STn, MUC1/Tn, and MUC1/STn) with 100 % specificity and 100 % positive predictive value for detection of borderline/malignant serous tumors of the ovary, using proximity ligation assay (PLA). In the present work, using the same method, we studied other mucin glycosylation profiles that might add relevant information for diagnostic purposes...
June 2016: Virchows Archiv: An International Journal of Pathology
Patrick Borentain, Sylvie Carmona, Sylvie Mathieu, Elisabeth Jouve, Assou El-Battari, René Gérolami
PURPOSE: Interactions between endothelial and tumor cells via E-selectin and sialyl Lewis x (sLex) have been suggested to play a significant role in the development of metastasis and tumor growth. In this work, we tested whether inhibition of E-selectin expression on the surface of endothelial cells might impair endothelial/tumor cells interactions and tumor growth of hepatocarcinoma cells in vitro and in vivo. METHODS: We used HepG2 cells that highly express sLex antigens and HuH7 cells that do not express sLex...
April 2016: Cancer Chemotherapy and Pharmacology
José Alexandre Ferreira, Ana Magalhães, Joana Gomes, Andreia Peixoto, Cristiana Gaiteiro, Elisabete Fernandes, Lúcio Lara Santos, Celso A Reis
Glycosylation is the most frequent and structurally complex posttranslational modification in cell-surface and secreted proteins. Glycans are major orchestrators of biological processes, namely by controlling protein folding and key biological functions such as cell adhesion, migration, signaling and immune recognition. Altered glycosylation is considered a hallmark of malignant transformations that decisively contributes to disease outcome. This review comprehensively summarizes the main findings related with gastrointestinal cancers and the decisive impact of aberrant glycosylation on tumor biology towards more aggressive phenotypes...
January 29, 2016: Cancer Letters
Stefan Mereiter, Ana Magalhães, Barbara Adamczyk, Chunsheng Jin, Andreia Almeida, Lylia Drici, Maria Ibáñez-Vea, Catarina Gomes, José A Ferreira, Luis P Afonso, Lúcio L Santos, Martin R Larsen, Daniel Kolarich, Niclas G Karlsson, Celso A Reis
BACKGROUND: Terminal α2-3 and α2-6 sialylation of glycans precludes further chain elongation, leading to the biosynthesis of cancer relevant epitopes such as sialyl-Lewis X (SLe(X)). SLe(X) overexpression is associated with tumor aggressive phenotype and patients' poor prognosis. METHODS: MKN45 gastric carcinoma cells transfected with the sialyltransferase ST3GAL4 were established as a model overexpressing sialylated terminal glycans. We have evaluated at the structural level the glycome and the sialoproteome of this gastric cancer cell line applying liquid chromatography and mass spectrometry...
August 2016: Biochimica et Biophysica Acta
Weijing Zhang, Teng Hou, Chunhao Niu, Libing Song, Yanna Zhang
BACKGROUND: The β1,3-N-acetylglucosaminyltransferase-3 gene (B3GNT3) encodes a member of the B3GNT family that functions as the backbone structure of dimeric sialyl-Lewis A and is involved in L-selectin ligand biosynthesis, lymphocyte homing and lymphocyte trafficking. B3GNT3 has been implicated as an important element in the development of certain cancers. However, the characteristics of B3GNT3 in the development and progression of cancer remain largely unknown. Thus, our study aimed to investigate the expression pattern and the prognostic value of B3GNT3 in patients with early-stage cervical cancer...
2015: PloS One
Miki Tanaka-Okamoto, Masahiko Yabu, Mikio Mukai, Hidenori Takahashi, Yoshiyuki Fujiwara, Masayuki Ohue, Yoshihiro Kamada, Eiji Miyoshi, Yasuhide Miyamoto
We have attempted to identify a novel glycan tumor marker. Pyridylaminated (PA) O-glycans were prepared from sera, and the corresponding O-glycan profiles were constructed by HPLC separation. By comparing the serum O-glycan profiles from healthy controls with those of cancer patients, we identified a marker candidate, core 1 sialyl Lewis A (NeuAcα2-3Galβ1-3(Fucα1-4)GlcNAcβ1-3Gal) (abbreviated C1SLA), whose concentration appeared to be weakly correlated with CA19-9 values. To quantify this glycan, we developed a selected reaction monitoring (SRM) assay that used a stable isotope, tetradeuterium-labeled pyridylamino (d4-PA) glycan, as an internal standard...
January 4, 2016: Journal of Proteome Research
J L Jeffries, J Jia, W Choi, S Choe, J Miao, Y Xu, R Powell, J Lin, Z Kuang, H R Gaskins, G W Lau
Cystic fibrosis (CF) patients battle life-long pulmonary infections with the respiratory pathogen Pseudomonas aeruginosa (PA). An overabundance of mucus in CF airways provides a favorable niche for PA growth. When compared with that of non-CF individuals, mucus of CF airways is enriched in sialyl-Lewis(x), a preferred binding receptor for PA. Notably, the levels of sialyl-Lewis(x) directly correlate with infection severity in CF patients. However, the mechanism by which PA causes increased sialylation remains uncharacterized...
July 2016: Mucosal Immunology
Salvatore Scarà, Patrizia Bottoni, Roberto Scatena
CA19-9 (carbohydrate antigen 19-9, also called cancer antigen 19-9 or sialylated Lewis a antigen) is the most commonly used and best validated serum tumor marker for pancreatic cancer diagnosis in symptomatic patients and for monitoring therapy in patients with pancreatic adenocarcinoma. Normally synthesized by normal human pancreatic and biliary ductal cells and by gastric, colon, endometrial and salivary epithelia, CA 19-9 is present in small amounts in serum, and can be over expressed in several benign gastrointestinal disorders...
2015: Advances in Experimental Medicine and Biology
Ofra Malka Ohana, Janet Ozer, Isebrand Prinsloo, Daniel Benharroch, Jacob Gopas
Hodgkin's lymphoma is believed to spread in an orderly fashion within the lymphatic compartment. In a minority of cases, after reaching the spleen, the neoplasm disseminates, reminiscent of metastasis. In the spleen, the Hodgkin-Reed-Sternberg tumor cells come across platelets in the blood vessels and mainly in the splenic red pulp. Based on this knowledge, we investigated the possibility of platelets inducing cell adhesion in Hodgkin's lymphoma cell lines. We showed that L428 and KMH-2 cells strongly adhere to thrombin-activated platelets...
2015: Cancer Biology & Therapy
Jessica Catarine Frutuoso do Nascimento, Steffany de Almeida Ferreira, Juliana Lúcia de Albuquerque Vasconcelos, João Luiz Quirino da Silva-Filho, Bruno Trajano Barbosa, Matheus Filgueira Bezerra, Cíntia Renata Costa Rocha, Eduardo Isidoro Carneiro Beltrão
Fucosylated glycans synthesized by α1,3/4-fucosyltransferase (FUT3) enzyme play an important role in breast cancer prognosis and metastasis, being involved in the binding of circulating tumor cells to the endothelium and being related to tumor stage, metastatic potential and chemoresistance. Despite the pro-tumor action of this enzyme, studies have demonstrated its role in natural killer-induced cytotoxicity through the recognition of sialyl Lewis X by C-type lectin receptors and through extrinsic apoptosis pathway triggered by Apo2L-TRAIL...
December 2015: Experimental and Molecular Pathology
Minekatsu Taga, Hitomi Hoshino, Shulin Low, Yoshiaki Imamura, Hideaki Ito, Osamu Yokoyama, Motohiro Kobayashi
OBJECTIVES: It is widely accepted that sialyl Lewis X (sLeX) and sialyl Lewis A (sLeA, also known as CA 19-9) glycans expressed on cancer cells function in E-selectin-mediated metastasis. Recently, it was reported that 6-sulfo sLeX glycans detected by the MECA-79 monoclonal antibody are expressed in roughly a quarter of gastric adenocarcinoma cases, and that these cases show a poorer prognosis than MECA-79-negative cases do. The present study was undertaken to assess expression of 6-sulfo sLeX glycans in bladder urothelial carcinoma and evaluate potential clinical implications...
November 2015: Urologic Oncology
Manveen K Sethi, Hoguen Kim, Cheol Keun Park, Mark S Baker, Young-Ki Paik, Nicolle H Packer, William S Hancock, Susan Fanayan, Morten Thaysen-Andersen
Glycomics may assist in uncovering the structure-function relationships of protein glycosylation and identify glycoprotein markers in colorectal cancer (CRC) research. Herein, we performed label-free quantitative glycomics on a carbon-liquid chromatography-tandem mass spectrometry-based analytical platform to accurately profile the N-glycosylation changes associated with CRC malignancy. N-Glycome profiling was performed on isolated membrane proteomes of paired tumorigenic and adjacent non-tumorigenic colon tissues from a cohort of five males (62...
October 2015: Glycobiology
Makoto Miyara, Driss Chader, Edouard Sage, Daisuke Sugiyama, Hiroyoshi Nishikawa, Diane Bouvry, Laetitia Claër, Ravi Hingorani, Robert Balderas, Jurg Rohrer, Noel Warner, Alain Chapelier, Dominique Valeyre, Reiji Kannagi, Shimon Sakaguchi, Zahir Amoura, Guy Gorochov
CD4(+) regulatory T (Treg) cells expressing CD25 and the transcription factor forkhead box P3 (FOXP3) are indispensable for immunological self-tolerance and homeostasis. FOXP3(+)CD25(+)CD4(+) T cells in humans, however, are heterogeneous in function and differentiation status, including suppressive or nonsuppressive cells as well as resting or activated Treg cells. We have searched for cell surface markers specific for suppression-competent Treg cells by using a panel of currently available monoclonal antibodies reactive with human T cells...
June 9, 2015: Proceedings of the National Academy of Sciences of the United States of America
Vishwanath B Chachadi, Ganapati Bhat, Pi-Wan Cheng
The sialyl Lewis a and x (sLe(a/x)) antigens frequently displayed on the surface of tumor cells are involved in metastasis. Their synthesis has been attributed to altered expression of selective glycosyltransferases. Identification of these glycosyltransferases and the glycoproteins that carry these carbohydrate antigens should help advance our understanding of selectin-mediated cancer metastasis. In this study, quantitative real-time polymerase chain reaction analysis coupled with in situ proximity ligation assay and small interference RNA treatment shows involvement of β3galactosyltransferase-V in the synthesis of MUC16-associated sLe(a) in H292 cells...
September 2015: Glycobiology
Sudhir Singh, Kuntal Pal, Jessica Yadav, Huiyuan Tang, Katie Partyka, Doron Kletter, Peter Hsueh, Elliot Ensink, Birendra Kc, Galen Hostetter, H Eric Xu, Marshall Bern, David F Smith, Anand S Mehta, Randall Brand, Karsten Melcher, Brian B Haab
The fucose post-translational modification is frequently increased in pancreatic cancer, thus forming the basis for promising biomarkers, but a subset of pancreatic cancer patients does not elevate the known fucose-containing biomarkers. We hypothesized that such patients elevate glycan motifs with fucose in linkages and contexts different from the known fucose-containing biomarkers. We used a database of glycan array data to identify the lectins CCL2 to detect glycan motifs with fucose in a 3' linkage; CGL2 for motifs with fucose in a 2' linkage; and RSL for fucose in all linkages...
June 5, 2015: Journal of Proteome Research
Sònia Bassagañas, Helena Allende, Lara Cobler, M Rosa Ortiz, Esther Llop, Carme de Bolós, Rosa Peracaula
BACKGROUND: Pancreatic ductal adenocarcinoma (PDAC) is characterized by an abundant stroma containing several pro-inflammatory cytokines, which are described to modulate the expression of important genes related to tumor promotion and progression. In the present work we have investigated the potential role of these cytokines in the biosynthesis of tumor-associated carbohydrate antigens such as sialyl-Lewis(x) (SLe(x)) through the regulation of specific glycosyltransferase genes. METHODS: Two human PDAC cell lines MDAPanc-3 and MDAPanc-28 were treated with pro-inflammatory cytokines IL-1β, TNFα, IL-6 or IL-8, and the content of tumor-associated carbohydrate antigens at the cell membrane was analyzed by flow cytometry...
September 2015: Cytokine
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