The expression of syndecan-1 is related to the risk of endometrial hyperplasia progressing to endometrial carcinoma

Loss of expression of Syndecan-1 is associated with Tumor Recurrence, Metastatic Potential, and Poor Survival in patients with Colorectal carcinoma

OBJECTIVE

The loss of expression of syndecansyndecan-1 is associated with poor prognosis in many types of human cancer. The objective of this study was to evaluate the relation between syndecan-1 immunoexpression and several clinicopathological parameters in a subset of colorectal carcinoma (CRC) patients.

METHODS

Pathology tissue blocks of 202 primary tumors, 41 adenomas, and 37 normal colonic mucosae were used in this study. The cases diagnosed in the period 1995-2015 was included in the study. Immunohistochemistry analysis was performed using anti-CD138/syndecan-1 (B-A38) mouse monoclonal antibody. A semiquantitative method was used to score the syndecan-1 expression based on an evaluation of the percentage and intensity of the membranous and cytoplasmic expression. The data collected from Pathology Department at King Abdulaziz University Hospital, Jeddah, Saudi Arabia. This is a retrospective cohort study that was conducted from July 2018 until August 2019.

RESULTS

Loss of syndecan-1 immunoexpression was observed in 72 (42.6%), 5 (12.2%), and 3 (8.1%) cases of CRC, adenomas, and normal mucosae, respectively. Low expression of syndecan-1 showed an association with nodal (p=0.003) and distant (p=0.001) metastasis, lymphovascular invasion (p=0.001), and tumor recurrence (p=0.006). Low syndecan-1 expression were associated with short overall survival (OS) (log rank 4.019, p=0.045) and disease-free survival (DFS) probabilities (log rank 4.748, p=0.029).

CONCLUSION

Loss of syndecan-1 immunoexpression is associated with metastatic potential, tumor recurrence and shorter survival in CRC and is considered a potential biomarker of poor prognosis in CRC patients.

Cell adhesion molecules in endometrial cancer - A systematic review

Adhesive molecules are responsible for the cell-cell interaction and the surrounding intercellular environment creating normal tissue architecture. The role of adhesion proteins in cancer refers to angiogenesis, loss of tissue continuity, and deprivation of intercellular contact with the extracellular matrix, promoting the spread of cancer through the formation of metastases. The integrity of the epithelium is disturbed - with disturbances in the whole mechanism of cell connections, thanks to which cancer cells infiltrate surrounding tissues, and move to lymphatic and blood vessels. Adhesive molecules are divided into five main families: cadherin, catenins, integrins, the immunoglobulin superfamily and non-classical adhesion molecules. In the present review we describe the role of all five families of adhesive molecules in endometrial cancer.

Comparison of Syndecan-1 Immunohistochemical Expression in Lobular and Ductal Breast Carcinoma with Nodal Metastases

Syndecan-1 (Sdc1) is a transmembrane heparan sulfate proteoglycan, an extracellular matrix receptor involved in intercellular communication, proliferation, angiogenesis, and metastasis. This study determined and compared Sdc1 expression in the tumor cells and stroma of 30 invasive lobular and 30 invasive ductal breast carcinomas (ILCs/IDCs), also in the axillary node metastases of ductal type, and correlated it with clinical and tumor parameters. Sdc1 was expressed in the epithelium of 90% carcinoma of both histological types. Also, it was most frequently expressed in their tumor stroma, but in ILC, stromal expression was negative in 40%. Sdc1 was expressed in 86.7% of the metastatic epithelium of IDC nodal metastases (in even 50% as high expression), while the nodal stroma was negative in 46.7%. Primary IDC showed a negative correlation between epithelial Sdc1 and progesterone receptors (PRs), whereas ILC showed a positive correlation between stromal Sdc1 and histological gradus. In the metastatic epithelium, Sdc1 was negatively correlated with a patient's age, estrogen receptors (ERs), and PRs in the primary tumors, while the stroma of metastases demonstrated a positive correlation with the focus number in primary tumors and a negative correlation with PRs in primary tumors. This research revealed identical overall epithelial Sdc1 expression in both breast carcinomas with no statistically significant difference in its stromal expression and confirmed the role of Sdc1 in the progression of both tumor types and in the development of ductal carcinoma's metastatic potential.

UbcH10 Expression in Benign, Hyperplastic, and Malignant Endometrial Curetted Materials

The aim of this study was to investigate the role of UbcH10 expression in the differential diagnosis of benign, hyperplastic, and malignant endometrial tissues and also the relationship of UbcH10 with the clinicopathologic parameters of malignant cases. A tissue microarray was performed for 81 endometrial curettage biopsies, which histological diagnosis had demonstrated to be 13 cases of proliferative endometrium, 7 cases of disordered proliferative endometrium, 5 cases of complex atypical hyperplasia, 24 cases of nonatypical hyperplasia, and 32 cases of endometrioid adenocarcinoma. Expression of UbcH10 was assessed by immunohistochemistry. When groups were compared according to UbcH10 percentages and scores, a statistically significant difference was found only between the carcinoma group and the other groups, except the complex atypical hyperplasia group ( P < .05). In the malignant group, UbcH10 percentages and scores were only significantly related to age. There was no significant association between UbcH10 expression and tumor grade and stage. Overexpression of UbcH10 may be a useful indicator of endometrial carcinoma. UbcH10 also deserves further evaluation in the detection of prognostic mean and also for its role in endometrial carcinogenesis.

Syndecan-1 expression in human glioma is correlated with advanced tumor progression and poor prognosis

Syndecan-1 has been implicated in tumorigenesis and progression of various human malignancies. Recent studies have demonstrated that syndecan-1 may have a different function and biological activity depending on the specific tumor type. Therefore, the aim of this study was to investigate the clinical significance of syndecan-1 in human gliomas. One hundred and sixteen glioma patients (26 World Health Organization (WHO) grade I, 30 WHO grade II, 30 WHO grade III, and 30 WHO grade IV) and 15 normal brain specimens acquired from 15 patients undergoing surgery for epilepsy as control were collected. Immunohistochemistry assay, quantitative real-time PCR and Western blot analysis were carried out to detect the expression of syndecan-1 at gene and protein levels in glioma samples with different WHO grades. Syndecan-1 gene and protein levels were both higher in glioma tissues compared to controls (both P < 0.001). In addition, its expression levels increased with ascending tumor WHO grades according to the results of immunohistochemistry assay, quantitative real-time PCR and Western blot analysis. Moreover, the survival rate of syndecan-1-positive patients was significantly lower than that of syndecan-1-negative patients (P = 0.006). We further confirmed that the increased expression of syndecan-1 was an independent prognostic indicator in glioma by multivariate analysis (P = 0.01). Our data suggest for the first time that the increased expression of syndecan-1 at gene and protein levels is correlated with advanced tumor progression and poor outcome in patients with glioma. Syndecan-1 might serve as a potential prognosis predictor of this dismal tumor.

The effect of proteoglycans inhibited on the neurotropic growth of salivary adenoid cystic carcinoma

OBJECTIVE

To evaluate the relationship between inhibition of proteoglycans which secreted by salivary adenoid cystic carcinoma cell line (SACC-83) and the neurotropic ability of the tumor cells.

METHODS

The expression vector of short hairpin RNA (shRNA-WJ4) targeting xylosyltransferase-I gene was constructed and transfected into SACC-83 cells (group SACC83-WJ4), shRNA-HK used as negative control was transfected into SACC-83 cells (group SACC-83-HK), SACC-83 cells without transfection was used as black control (group SACC-83). The xylosyltransferase-I gene expression was measured by real-time PCR. The content of proteoglycans was detected by Blyscan Assay Kit. The effect of down-regulated proteoglycans on the perineural invasion of nude mice was observed. All data were analyzed by the software spss 13.0.

RESULTS

The results showed that the transfected efficiency of shRNA was 43.3%. The expression of xylosyltransferase-I was inhibited by 43.0% 48 h after transfection of shRNA-WJ4. The content of proteoglycans was down-regulated by 30.25% 48 h after transfection. In the neurotropic experiment in vivo of nude mice, the rate of perineural invasion of group SACC-83-WJ4 was 33.33%, significantly lower than that of the negative control (100%) and the black control (100%) (P < 0.05).

CONCLUSION

Xylosyltransferase-I gene of SACC cells was silenced by RNA interference technology, proteoglycans secretion was reduced and neurotropic invasion behavior of SACC was inhibited obviously.