Cancer Biomarkers - Volume 22, issue 4

Authors: Lyu, Yunxiao | Cheng, Yunxiao | Wang, Bin | Chen, Liang | Zhao, Sicong

Article Type: Research Article

Abstract: BACKGROUND: Recent studies have shown that Sulfatase 1 (SULF1) plays a crucial role in the genesis, development, and progression of tumors. However, there have been few studies on the role of SULF1 in pancreatic cancer. OBJECTIVE: The present study examined the differences in SULF1 expression levels between pancreatic cancer and normal tissues, and their correlation with the clinicopathological features and prognosis. METHODS: A total of 65 pancreatic cancer samples were enrolled in this study. An immunohistochemical assay were used in this study. The relationship between SULF1 expression and clinicopathological features were tested using …χ 2 test or Fisher’s exact test. The Kaplan-Meier method was used to calculate the cumulative survival rates of the patients. RESULTS: The study showed that the SULF1 expression level was higher in pancreatic cancer tissues than in normal tissues. Analysis of the clinical and pathological data of patients revealed that high SULF1 expression was associated with later T, N, and TNM stages, higher CA19-9 levels, smaller tumor size, and poorer prognosis. CONCLUSIONS: These findings suggested that SULF1 could be an indicator of the clinicopathological features and prognosis of pancreatic cancer. Show more

Keywords: Sulfatase 1, pancreatic cancer, metastasis, prognosis

DOI: 10.3233/CBM-181210

Citation: Cancer Biomarkers, vol. 22, no. 4, pp. 701-707, 2018

Authors: Taniguchi-Ponciano, Keiko | Ribas-Aparicio, Rosa María | Marrero-Rodríguez, Daniel | Arreola-De la Cruz, Hugo | Huerta-Padilla, Víctor | Muñoz, Nancy | Gómez-Ortiz, Laura | Ponce-Navarrete, Gustavo | Rodríguez-Esquivel, Miriam | Mendoza-Rodríguez, Mónica | Gómez-Virgilio, Laura | Peralta, Raúl | Serna, Luis | Gómez, Guillermo | Ortiz, Jorge | Mantilla, Alejandra | Hernández, Daniel | Hernández, Ángeles | Bandala, Cindy | Salcedo, Mauricio

Article Type: Research Article

Abstract: BACKGROUND: Similarities between the pathologic progression of cancer and the physiologic process of placentation have been recognized for many years proposing that both present similar mechanisms and processes. Cervical cancer (CC) is one of the most frequent neoplasia among Mexican women turning it into an important health problem. OBJECTIVE: The aim of this study was to determine the degree of the involvement of pregnancy related genes and in cancer progression by in-silico analysis and validated in CC samples. RESULTS: The data mining analysis resulted in the identification of genes expressed in term …placenta, first trimester placenta and normal cervical tissues. Finally, we selected KISS1 for the involvement of pregnancy related gene and also in cancer process. In order to explore KISS1 in CC, we analyzed Copy Number Variation (CNV) and gene expression using microarray experiments. KISS1 showed 20% genomic gain in 1q32.1 on CC samples. Furthermore, microarray analysis showed KISS1 as up-regulated genes. Results were validated showing an overexpression of 85% of KISS1 in CC samples. CONCLUSIONS: Data suggest KISS1 as a great candidate for CC molecular markers or as a therapeutic target for CC. Also, HPV presence does not seem to alter the KISS1 expression in CC. Show more

Keywords: KISS1, cervical cancer, in-silico analysis, molecular marker

DOI: 10.3233/CBM-181215

Citation: Cancer Biomarkers, vol. 22, no. 4, pp. 709-719, 2018

Authors: Wang, Yaozong | Li, Jianjun | Dai, Lei | Zheng, Jueru | Yi, Zhanbo | Chen, Liangliang

Article Type: Research Article

Abstract: BACKGROUND: Recurrence following conventional therapies in patients with breast cancer is a major cause of morbidity and mortality. This study aimed to investigate potential predictive biomarkers for breast cancer recurrence especially microRNAs (miRNAs). METHODS: The primary breast cancer patients who were scheduled to undergo curative resection in our hospital from May 2007 to May 2012 were recruited in this study. Clinical and pathological characteristics were compared in patients with or without recurrence. The expressions of tissue miRNAs by quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) were also analyzed in patients with recurrence or not. Multivariate Cox analysis …was fit to evaluate potential predicative factors for breast cancer recurrence. Kaplan-Meier plots was conducted to further evaluate the association between miR-17-5p expression and recurrence-free survival (RFS). RESULTS: A total of 133 consecutive patients were enrolled into the final analysis and 29 of them have suffered recurrence within 5 years after the operation. Our results revealed tissue miR-17-5p expression as an independent risk factor for breast cancer recurrence (HR: 4.45; 95% CI: 1.58–11.53, P = 0.015). Patients with a higher miR-17-5p expression was significantly associated with a worse 5-year RFS by log-rank test (p = 0.017). CONCLUSIONS: This study suggested that miR-17-5p might be a useful predictive factor for breast cancer recurrence. Show more

Keywords: Breast cancer, recurrence, microRNA, prediction

DOI: 10.3233/CBM-181228

Citation: Cancer Biomarkers, vol. 22, no. 4, pp. 721-726, 2018

Authors: Liu, Yang | Li, Lin | Liu, Zheng | Yuan, Qingling | Lu, Xiubo

Article Type: Research Article

Abstract: BACKGROUNDS: The purpose of this study was to investigate clinical role and functional effects of miR-431 expression in papillary thyroid carcinoma (PTC). METHODS: Expression of miR-431 in PTC patient tissue samples and plasma samples was examined by using qRT-PCR methods. Cell migration and invasion capacity were evaluated using transwell assays. Western blot analysis was performed to detect protein expression after miR-431 overexpression in PTC cells. RESULTS: We demonstrated that miR-431 expression was lower in PTC tissues and plasma samples compared to their corresponding controls. MiR-431 expression was particularly lower in PTC patients with …lymph node (LN) metastasis. In vitro , miR-431 overexpression significantly inhibited cell migration, invasion and EMT process by upregulating E-cadherin and downregulating Vimentin expression. Additionally, wedemonstrated that miR-431 overexpression suppressed Hedgehog (Hh) signaling pathway by downregulating Gli1 expression. CONCLUSION: Our results indicated that miR-431 could serve as a predictor for PTC patients with positive lymph node metastasis and a potential target of PTC treatment. Show more

Keywords: Papillary thyroid carcinoma, miR-431, lymph node metastasis, cell invasion

DOI: 10.3233/CBM-181253

Citation: Cancer Biomarkers, vol. 22, no. 4, pp. 727-732, 2018

Authors: Faghih, Zahra | Deihimi, Safoora | Talei, Abdolrasoul | Ghaderi, Abbas | Erfani, Nasrollah

Article Type: Research Article

Abstract: To find out if the T cell repertoire is efficiently and specifically provoked in patients with breast cancer, we have investigated the clonotypes of main T cell subsets (based on Vβ -Chain) in tumor draining lymph nodes. CD4+ helper, CD8+ cytotoxic and (CD4+CD127 dim CD25+) regulatory T cells, were negatively selected, and isolated, from lymph node mononuclear cells of 14 untreated patients with breast cancer. Four non-malignant patients, who underwent surgical operation, were also recruited as the control group. Based on sequences and new nomenclature of the T cell Receptor β Variables (TRBVs) …available in the international ImMunoGeneTics (IMGT) database, 28 TRBV specific forward primers and two TRB Constant region (TRBC) specific reverse primers were developed to amplify all functional alleles. Fluorescent-labeled PCR products were then run on an ABI PRISM 310 Genetic-Analyzer. The data was analyzed by GeneMapper software version 3.1. Clonotype analysis suggested that activated T cells are present in breast cancer. More TRBV usage were detected among CD4+ helper and regulatory subsets, with Gaussian-like pattern in the majority of functional TRBV families; whereas CD8+ cytotoxic T cells showed oligoclonality in almost all TRBV families with one or two dominant peaks in each family. Similar pattern in some of these TRBVs were also observed among controls. Having no expression or polyclonality in the controls, the oligoclonal pattern observed in the TRBV18, however, appears to be specific to breast cancer patients. This phenomenon may reflect the existence of new antigenic stimulation(s) in BC patients, preferentially activating those clones of T cells that express TRBV18. Show more

Keywords: Breast cancer, TCR clonotype, Tregs, cytotoxic T cells, helper T cells

DOI: 10.3233/CBM-181295

Citation: Cancer Biomarkers, vol. 22, no. 4, pp. 733-745, 2018

Authors: Velmurugan, Bharath Kumar | Chang, Wei-Hsiang | Chung, Chia-Min | Yeh, Chung-Min | Lee, Chien-Hsun | Yeh, Kun-Tu | Lin, Shu-Hui

Article Type: Research Article

Abstract: BACKGROUND: Discoidin domain receptors (DDRs), a collagen receptor tyrosine kinase, play a major role in cancer progression. DDR2 has been suggested as a prognostic marker in several cancer types; however, the correlation between DDR2 expression and clinical outcome of oral cancer patients in Taiwan population has not been investigated. MATERIALS AND METHODS: In the present study we sought to determine the clinical significance of Discoidin Domain Receptor Tyrosine Kinase 2 (DDR2) expression in oral squamous cell carcinoma (OSCC) patients. We examined DDR2 expression in OSCC specimens by immunohistochemistry and then we analyzed the association of DDR2 …expression with clinicopathological factors in OSCC. RESULTS: We divided 254 OSCC cases into two groups based on DDR2 expression levels and compared with several clinicopathological factors and their overall survival. The group with high DDR2 expression had significantly higher frequencies of lymph node metastasis (P = 0.0094) and AJCC stage (P = 0.0058) compared to the group with low DDR2 expression. Furthermore, the lymph node metastasis oral cancer patients with high DDR2 expression had low survival rate than low DDR2 group (P = 0.0458). CONCLUSIONS: Our data indicate that DDR2 is a potent biomarker that can be used as an effective therapeutic target for treating OSCC patients with lymph node metastasis. Show more

Keywords: DDR2, lymph node metastasis, IHC, OSCC, biomarker

DOI: 10.3233/CBM-181302

Citation: Cancer Biomarkers, vol. 22, no. 4, pp. 747-753, 2018

Authors: Yoshida, Tetsuya | Kageyama, Susumu | Isono, Takahiro | Yuasa, Takeshi | Kushima, Ryoji | Kawauchi, Akihiro | Chano, Tokuhiro

Article Type: Research Article

Abstract: BACKGROUND AND OBJECTIVE: Renal cell carcinoma (RCC) is the urological malignancy with the highest mortality rate and is increasing in incidence. The prognostic and predictive biomarkers are highly desired. This study aims to investigate the significance of superoxide dismutase 2 (SOD2) as a clinical biomarker in patients with renal cell carcinomas. METHODS: A cohort of 97 patients with RCC was analyzed retrospectively using various clinical parameters and SOD2 expression by immunohistochemistry. RESULTS: Cases with stronger SOD2 positivity of the tumor in comparison to the adjacent normal renal tubule by immunohistochemistry were categorized as high SOD2 …and were associated with worse overall survivals (p = 0.005). In particular, in cases with metastatic RCC, high SOD2 expression in the tumors was significantly associated with a worse overall survival (p = 0.001), and the maximum critical risk. Treatment with current molecular targeting therapies did not improve the prognoses of cases with metastatic or recurrent RCC. CONCLUSIONS: High SOD2 expression can be predictive of a poor clinical outcome and be clinically useful in the follow-up of metastatic RCC. Therapeutics for metastatic RCCs require further improvement, such as supplementary administration of agents targeting mitochondrial SOD2. Show more

Keywords: Metastasis, molecular targeting therapy, renal cell carcinoma, superoxide dismutase 2

DOI: 10.3233/CBM-181308

Citation: Cancer Biomarkers, vol. 22, no. 4, pp. 755-761, 2018

Authors: Li, Xiao | Hu, Wei-Wei | Wang, Li | Yang, Xiang-Hui

Article Type: Research Article

Abstract: BACKGROUND: Oral squamous cell carcinoma is a malignant tumor which is particularly common in the developing world, mostly in older males. OBJECTIVE: Although gene expression analyses had been performed previously, to our best knowledge, systemic co-expression analysis for this disease is still lacking to date. METHODS: In this study, we built the co-expression modules with the help of Weighted Correlation Network Analysis (WGCNA) and investigated the function enrichment of co-expression genes from important modules by bioinformatics analysis. RESULTS: A total of 10 co-expression modules were conducted for 4500 genes from 167 oral squamous …cell carcinoma samples. Number of genes for each module ranged from 52 to 1112, with the mean of 450. Interaction relationships of hub-genes between pairwise modules showed great differences, suggesting the high confidence of modules. Functional enrichments of the co-expression modules exhibited great differences. Furthermore, genes in the module ME blue and module ME magenta significantly enriched in hsa05332 (Graft-versus-host disease) and hsa05330 (Allograft rejection), and the two pathways were associated with the oral squamous cell carcinoma. CONCLUSION: Together, our findings provided the framework of co-expression gene modules of oral squamous cell carcinoma and further understanding of these modules at functional aspect. Show more

Keywords: Oral squamous cell carcinoma, WGCNA, co-expression modules, function enrichment

DOI: 10.3233/CBM-181314

Citation: Cancer Biomarkers, vol. 22, no. 4, pp. 763-771, 2018

Authors: Feng, Runhua | Lu, Sheng | Sah, Birendra K. | Beeharry, Maneesh K. | Zhang, Huan | Yan, Min | Liu, Bingya | Li, Chen | Zhu, Zhenggang

Article Type: Research Article

Abstract: BACKGROUND: Predicting lymph node metastasis (LNM) accurately is vital to design optimal treatment strategies preoperatively for gastric cancer (GC) patients. However, conventional tumor biomarkers and imaging techniques are not sufficient to predict LNM before surgery. miR-126 has been reported to play important roles in tumor metastasis which may represent a novel tumor biomarker. OBJECTIVE: To assess the utility of the combination of serum miR-126 and multi-detector computed tomography (MDCT) in predicting LNM preoperatively in GC. METHODS: Quantitative real-time polymerase chain reaction was performed to examine the serum miR-126 expression levels in 338 GC patients. MDCT was …also performed. The cut-off value of preoperative serum miR-126 level for LNM was determined by receiver characteristic curve (ROC) analysis. Logistic regression analysis was used to determine independent predictors for LNM. RESULTS: The serum miR-126 levels of GC patients with LNM were significantly lower compared with those without LNM (p < 0.05). In addition, the later the N stage was, the lower the serum miR-126 level was in GC patients (p < 0.05). With a cut-off value of 63.4, the sensitivity, specificity, accuracy, positive predictive value and negative predictive value of serum miR-126 for predicating LNM were 83.2%, 79.0%, 81.9%, 90.4% and 66.4%, respectively. The combination of serum miR-126 level and MDCT increased the accuracy of MDCT prediction for LNM from 69.2% to 86.7%. Serum miR-126 was an independent predictor for LNM. CONCLUSIONS: These results indicate for the first time that the combination of serum miR-126 and MDCT is useful for the prediction of LNM in GC. Show more

Keywords: Gastric cancer, miR-126, serum, computed tomography, lymph node metastasis

DOI: 10.3233/CBM-181324

Citation: Cancer Biomarkers, vol. 22, no. 4, pp. 773-780, 2018

Authors: Tian, Yu | Feng, Yun

Article Type: Research Article

Abstract: BACKGROUND: Long noncoding RNA ultraconserved element 338 (uc.338) is a long non-coding RNA reported to function as a promoter in non-small cell lung cancer (NSCLC). However, the function and potential mechanism of uc.338 in NSCLC is still unclear. OBJECTIVE: The aim of the present study was to assess the effect of uc.338 on the prognosis of patients with NSCLC. METHODS: The expression levels of uc.338 in NSCLC tissues and matched normal lung tissues were examined by real-time quantitative PCR. Then the association between uc.338 levels with clinical variables as well as survival time was …investigated. RESULTS: We found that uc.338 expression levels were significantly upregulated in NSCLC compared with the matched noncancerous lung tissues (P < 0.01). In addition, increased uc.338 expression was significantly associated with TNM stage (P < 0.003), lymph node metastasis (P < 0.006) and distant metastasis (P < 0.002). More importantly, Kaplan-Meier survival analysis demonstrated that higher uc.338 expression levels were associated with a shorter overall survival (P < 0.0016) and disease-free survival (p < 0.0001) in NSCLC patients. Finally, univariate and multivariate Cox regression analyses revealed that uc.338 was an independent risk factor for overall survival and disease-free survival. CONCLUSIONS: Our results show that uc.338 may play an important role in tumorigenesis and progression and could serve as a potential independent prognostic biomarker for patients with NSCLC. Show more

Keywords: Long noncoding RNA, ultraconserved element 338, prognosis

DOI: 10.3233/CBM-181331

Citation: Cancer Biomarkers, vol. 22, no. 4, pp. 781-785, 2018