1
|
Glycan structures and their recognition roles in the human blood group ABH/Ii, Le a, b, x, y and Sialyl Le a,x active cyst glycoproteins. Glycoconj J 2019; 36:495-507. [PMID: 31773366 DOI: 10.1007/s10719-019-09887-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 08/06/2019] [Accepted: 08/09/2019] [Indexed: 01/15/2023]
Abstract
Human ovarian cyst glycoproteins (HOC, cyst gps) isolated from pseudomucinous type of human ovarian cyst fluids is one of the richest and pioneer sources for studying biosynthesis, structures and functional roles of blood group ABH, Lea,b,x,y, sLea and sLex active glycoproteins. After 70+ years of exploration, four top highlights are shared. (i) an updated concept of glycotopes and their internal structures in cyst gps was composited; (ii) the unknown codes of new genes in secreted cyst gps were unlocked as Lex and Ley; (iii) recognition profiles of cyst glycans and a sialic acid-rich (18%) glycan with lectins and antibodies were shown. (iv) Co-expression of Blood Group A/ A-Leb/y and B/B-Leb/y active Glycotopes in the same glycan chains were isolated and illustrated. These are the most advanced achievements since 1980.
Collapse
|
2
|
Hou R, Jiang L, Liu D, Lin B, Hu Z, Gao J, Zhang D, Zhang S, Iwamori M. Lewis(y) antigen promotes the progression of epithelial ovarian cancer by stimulating MUC1 expression. Int J Mol Med 2017; 40:293-302. [PMID: 28586014 PMCID: PMC5504979 DOI: 10.3892/ijmm.2017.3009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 05/10/2017] [Indexed: 12/24/2022] Open
Abstract
MUC1 is a type I transmembrane glycoprotein and is overexpressed in various epithelial tumor tissues. Some researchers have demonstrated that the glycosylation status of MUC1 can affect MUC1-mediated tumor growth and cell differentiation. In our previous study, we proved that the abilities of cell proliferation, adhesion, invasion and metastasis, and drug resistance were enhanced in ovarian cancer cells stably expressing Lewis(y). Therefore, we hypothesized that Lewis(y) antigen may play a central role in regulating MUC1 expression, and MUC1-mediated cell growth and differentiation may be closely associated with Lewis(y) antigen. This study aimed to examine the correlation between MUC1 expression and Lewis(y) antigen levels in ovarian cancer cell lines and tissue samples. A series of techniques, including RT-qPCR, western blot anlaysis, immunoprecipitation, immunohistochemistry and double-labeling immunofluorescence were applied to detect the expression of Lewis(y) and MUC1. In malignant epithelial ovarian tumors, the positive expression rates of Lewis(y) antigen and MUC1 were 88.33 and 86.67%, respectively, which were markedly higher than those in borderline (60.00 and 53.33%, P<0.05), benign (33.33 and 30%, P<0.01) and normal (0 and 25%, P<0.01) ovarian samples. There was no correlation between the positive expression rates of Lewis(y) or MUC1 and clinicopathological parameters in ovarian cancers (P>0.05). The expression levels of Lewis(y) and MUC1 correlated with the clinical FIGO stage (P<0.05). Both MUC1 and Lewis(y) were highly expressed in ovarian cancer tissues, and their expression levels were positively correlated (P<0.01). In α1,2-fucosyltransferase (α1,2-FT)-transfected cells, the gene and protein expression levels of MUC1 were significantly upregulated compared with the cells that did not overexpress α1,2-FT (P<0.05). The ratio of Lewis(y) immunoprecipitated with MUC1 to total MUC1 increased 1.55-fold in α1,2-FT-overexpressing cells (P<0.05). The overexpression of Lewis(y) resulted in the upregulation of MUC1. On the whole, our data indicate that both MUC1 and Lewis(y) are associated with the occurrence and development of ovarian cancers.
Collapse
Affiliation(s)
- Rui Hou
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Luo Jiang
- Department of Ultrasound, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Dawo Liu
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Bei Lin
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Zhenhua Hu
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Jian Gao
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Danye Zhang
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Shulan Zhang
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Masao Iwamori
- Department of Biochemistry, Faculty of Science and Technology, Kinki University, Osaka 577-8502, Japan
| |
Collapse
|
3
|
Wu AM, Liu JH, Herp A, Sudakevitz D, Gilboa-Garber N. Relative intensities of recognition factors at two combining sites ofRalstonia solanacearumlectin (RSL) for accommodatinglFucα1→,dManα1→ and Galβ1→3/4GlcNAc glycotopes. FEBS Lett 2012; 586:1294-9. [DOI: 10.1016/j.febslet.2012.03.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2012] [Revised: 03/10/2012] [Accepted: 03/12/2012] [Indexed: 11/30/2022]
|
4
|
Wu AM. Human blood group ABH/Ii, Le(a,b,x,y), and sialyl Le (a,x) glycotopes; internal structures; and immunochemical roles of human ovarian cyst glycoproteins. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2011; 705:33-51. [PMID: 21618103 DOI: 10.1007/978-1-4419-7877-6_3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Albert M Wu
- Glyco-Immunochemistry Research Laboratory, Institute of Molecular and Cellular Biology, College of Medicine, Chang-Gung University, Kwei-san, Tao-yuan 333, Taiwan.
| |
Collapse
|
6
|
Kolwijck E, Engelke UF, van der Graaf M, Heerschap A, Blom HJ, Hadfoune M, Buurman WA, Massuger LF, Wevers RA. N-acetyl resonances in in vivo and in vitro NMR spectroscopy of cystic ovarian tumors. NMR IN BIOMEDICINE 2009; 22:1093-9. [PMID: 19593761 DOI: 10.1002/nbm.1417] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
An unassigned and prominent resonance in the region from delta 2.0-2.1 ppm has frequently been found in the in vivo MR spectra of cancer patients. We demonstrated the presence of this resonance with in vivo MRS in the cyst fluid of a patient with an ovarian tumor. (1)H-NMRS on the aspirated cyst fluid of this patient confirmed the observation. A complex of resonances was observed between 2.0 and 2.1 ppm. It was also present in 11 additional ovarian cyst fluid samples randomly chosen from our biobank. The resonance complex was significantly more prominent in samples from mucinous tumors than in samples from other histological subtypes. A macromolecule (>10 kDa) was found responsible for this complex of resonances. A correlation spectroscopy (COSY) experiment revealed cross peaks of two different types of bound sialic acid suggesting that N-glycans from glycoproteins and/or glycolipids cause this resonance complex. In the literature, plasma alpha-1 acid glycoprotein (AGP), known for its high content of N-linked glycans, has been suggested to contribute to the delta 2.0-2.1 spectral region. The AGP cyst fluid concentration did not correlate significantly with the peak height of the delta 2.0-2.1 resonance complex in our study. AGP may be partly responsible for the resonance complex but other N-acetylated glycoproteins and/or glycolipids also contribute. After deproteinization of the cyst fluid, N-acetyl-L-aspartic acid (NAA) was found to contribute significantly to the signal in this spectral region in three of the 12 samples. GC-MS independently confirmed the presence of NAA in high concentration in the three samples, which all derived from benign serous tumors. We conclude that both NAA and N-acetyl groups from glycoproteins and/or glycolipids may contribute to the delta 2.0-2.1 ppm resonance complex in ovarian cyst fluid. This spectral region seems to contain resonances from biomarkers that provide relevant clinical information on the type of ovarian tumor.
Collapse
Affiliation(s)
- Eva Kolwijck
- Department of Obstetrics and Gynecology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands.
| | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Yu SY, Yang Z, Khoo KH, Wu AM. Identification of blood group A/A-Leb/y and B/B-Leb/y active glycotopes co-expressed on the O-glycans isolated from two distinct human ovarian cyst fluids. Proteomics 2009; 9:3445-62. [PMID: 19609959 DOI: 10.1002/pmic.200800870] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Although the individual human blood group A and B determinants are well defined, their co-expression pattern on a particular glycan carrier in individuals of blood group AB status has not been delineated. To address this issue, complex O-glycans were isolated from two distinct sources of human ovarian cyst glycoproteins (HOC 89 and Cyst 19) and profiled by advanced MS analyses, in conjunction with defining their binding characteristics against a panel of lectins and monoclonal antibodies. The major O-glycans of HOC 89 were found to correspond to sialyl Tn, mono- and di-sialyl T structures, whereas those of Cyst 19 were apparently more heterogeneous and extended to larger sizes. A minimal structure that carries both A and B determinants on the same molecule was identified, in which the A epitope is attached directly to the core GalNAc, whereas the B epitope is preferentially located on the six arms of a core 2 structure. Both arms can be further extended with internal fucosylation that appears to be restricted to those non-sialylated chains already carrying the terminal ABH determinants, thus giving rise to rather prominent A/B-Le(b/y) glycotopes on larger O-glycans.
Collapse
Affiliation(s)
- Shin-Yi Yu
- Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
| | | | | | | |
Collapse
|