51
|
Luo J, Wen Q, Li J, Xu L, Chu S, Wang W, Shi L, Xie G, Huang D, Fan S. Increased expression of IRS-1 is associated with lymph node metastasis in nasopharyngeal carcinoma. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2014; 7:6117-6124. [PMID: 25337259 PMCID: PMC4203230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 08/20/2014] [Indexed: 06/04/2023]
Abstract
Nasopharyngeal carcinoma (NPC) is a head and neck malignant tumor rare throughout most of the world but common in Southeast Asia, especially in Southern China, which is with characteristics of early cervical lymph node metastasis and high incidence rate of distant metastasis. Insulin receptor substrate 1 (IRS-1) is a signaling adapter protein that is encoded by the IRS-1 gene in humans, plays an important role in the development, progression, invasion and metastasis of tumors. The aim of the present study was to investigate the association between the expression of IRS-1 protein and clinicopathological characteristics in NPC by immunohistochemistry. The results showed that the expression level of IRS-1 was significant higher in NPC than that in the control nasopharyngeal epithelia (P = 0.042). The positive percentage of IRS-1 expression in NPC with lymph node metastasis was also significantly higher than those without lymph node metastasis (P = 0.008). Positive expression of IRS-1 was proved to be the independent predicted factor for lymph node metastasis of NPC (P = 0.025) regardless of age, gender, histological type and clinical stages by multivariate logistic regression analysis. In addition, results showed higher sensitivity and agreement rate of IRS-1 for predicting lymph node metastasis of NPC patients. Taken together, high expression of IRS-1 might be closely correlated with lymph node metastasis in NPC and positive expression of IRS-1 could be used as an independent biomarker for predicting lymph node metastasis of NPC.
Collapse
Affiliation(s)
- Jiadi Luo
- Department of Pathology, The Second Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Qiuyuan Wen
- Department of Pathology, The Second Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Jiao Li
- Department of Pathology, The Second Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Lina Xu
- Department of Pathology, The Second Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Shuzhou Chu
- Department of Pathology, The Second Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Weiyuan Wang
- Department of Pathology, The Second Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Lei Shi
- Department of Pathology, The Second Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Guiyuan Xie
- Department of Oncology, The Second Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Donghai Huang
- Department of Otorhinolaryngology, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Songqing Fan
- Department of Pathology, The Second Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| |
Collapse
|
52
|
Li H, Meng F, Ma J, Yu Y, Hua X, Qin J, Li Y. Insulin receptor substrate-1 and Golgi phosphoprotein 3 are downstream targets of miR‑126 in esophageal squamous cell carcinoma. Oncol Rep 2014; 32:1225-33. [PMID: 25017784 DOI: 10.3892/or.2014.3327] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 06/24/2014] [Indexed: 11/06/2022] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is a common histologic subtype in China. It has been suggested that abnormal expression of microRNAs (miRNAs) is associated with carcinogenesis. We investigated miR-126 expression and its potential targets in ESCC. The expression of miR-126 was detected in cancerous and paired paracancer tissues from 102 patients with ESCC. Target analysis of miR-126 was predicted using online tools. The effect of miR-126 expression on target proteins was assessed using miR-126 mimics or miR-126 inhibitors in ESCC cell lines. In addition, the impact of miR-126 on cell proliferation, apoptosis, migration and invasion was detected in ESCC cell lines. The expression of miR-126 was significantly lower in ESCC tissues, which was associated with tumor differentiation, lymph node metastasis, tumor in-depth and TNM stage. Insulin receptor substrate-1 (IRS-1) and Golgi phosphoprotein 3 (GOLPH3) were overexpressed in ESCC. Overexpression of IRS-1 was associated with cell differentiation, whereas GOLPH3 was related to lymph node metastasis, tumor invasion in-depth and TNM stage in ESCC patients. miR-126 mimics downregulated the expression of IRS-1 and GOLPH3 protein and suppressed the proliferation, migration and invasion of ESCC cells, whereas miR-126 inhibitors led to the opposite results. miR-126 suppressed the proliferation, migration and invasion of ESCC cells, and acted as a tumor suppressor in the carcinogenesis of ESCC. IRS-1 and GOLPH3 are downstream targets of miR-126 at the post-transcriptional level in ESCC.
Collapse
Affiliation(s)
- Haomiao Li
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan 450008, P.R. China
| | - Fanyu Meng
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan 450008, P.R. China
| | - Jun Ma
- The Second Affiliated Hospital, Institute of Digestive Diseases, Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Yongkui Yu
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan 450008, P.R. China
| | - Xionghuai Hua
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan 450008, P.R. China
| | - Jianjun Qin
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan 450008, P.R. China
| | - Yin Li
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan 450008, P.R. China
| |
Collapse
|
53
|
Venmar KT, Carter KJ, Hwang DG, Dozier EA, Fingleton B. IL4 receptor ILR4α regulates metastatic colonization by mammary tumors through multiple signaling pathways. Cancer Res 2014; 74:4329-40. [PMID: 24947041 DOI: 10.1158/0008-5472.can-14-0093] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
IL4, a cytokine produced mainly by immune cells, may promote the growth of epithelial tumors by mediating increased proliferation and survival. Here, we show that the type II IL4 receptor (IL4R) is expressed and activated in human breast cancer and mouse models of breast cancer. In metastatic mouse breast cancer cells, RNAi-mediated silencing of IL4Rα, a component of the IL4R, was sufficient to attenuate growth at metastatic sites. Similar results were obtained with control tumor cells in IL4-deficient mice. Decreased metastatic capacity of IL4Rα "knockdown" cells was attributed, in part, to reductions in proliferation and survival of breast cancer cells. In addition, we observed an overall increase in immune infiltrates within IL4Rα knockdown tumors, indicating that enhanced clearance of knockdown tumor cells could also contribute to the reduction in knockdown tumor size. Pharmacologic investigations suggested that IL4-induced cancer cell colonization was mediated, in part, by activation of Erk1/2, Akt, and mTOR. Reduced levels of pAkt and pErk1/2 in IL4Rα knockdown tumor metastases were associated with limited outgrowth, supporting roles for Akt and Erk activation in mediating the tumor-promoting effects of IL4Rα. Collectively, our results offer a preclinical proof-of-concept for targeting IL4/IL4Rα signaling as a therapeutic strategy to limit breast cancer metastasis.
Collapse
Affiliation(s)
- Katherine T Venmar
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Kathy J Carter
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Daniel G Hwang
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - E Ashley Dozier
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Barbara Fingleton
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee.
| |
Collapse
|
54
|
Hu Y, Zhou M, Zhang K, Kong X, Hu X, Li K, Liu L. Lack of association between insulin receptor substrate2 rs1805097 polymorphism and the risk of colorectal and breast cancer: a meta-analysis. PLoS One 2014; 9:e86911. [PMID: 24497996 PMCID: PMC3907441 DOI: 10.1371/journal.pone.0086911] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Accepted: 12/16/2013] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Insulin receptor substrate-2 (IRS-2), a signaling adaptor protein, was involved in two cancer-related pathways (the phosphatidylinositol 3'-kinase (PI3K) and the extracellular signal-regulated kinase (ERK) pathways). Several studies have evaluated the association between IRS2 rs1805097 (G>A) polymorphisms and the risk of colorectal and breast cancer. However, the results were inconsistent. METHODOLOGY/PRINCIPAL FINDINGS A meta-analysis of seven published case-control studies (4 studies with 4798 cases and 5478 controls for colorectal cancer and 3 studies with 2108 cases and 2507 controls for breast cancer) were conducted to assess the strength of association using crude odd ratios (ORs) with 95% confidence intervals (CIs). For colorectal cancer, no obvious associations were found for all genetic models (homozygote comparison OR = 0.96, 95%CI 0.85-1.08, Pheterogeneity = 0.97; heterozygote comparison: OR = 0.91, 95%CI 0.73-1.13, Pheterogeneity<0.01; dominant model: OR = 0.92, 95%CI 0.80-1.06, Pheterogeneity = 0.05; recessive model: OR = 1.02, 95%CI 0.91-1.14, Pheterogeneity = 0.60). In the subgroup analysis by ethnicity, control source and consistency of frequency with Hardy-Weinberg equilibrium (HWE), still no significant associations were observed. For breast cancer, also no obvious associations were found for all genetic models (homozygote comparison: OR = 0.95, 95%CI 0.71-1.26, Pheterogeneity = 0.10; heterozygote comparison: OR = 1.00, 95%CI 0.89-1.14, Pheterogeneity = 0.71; dominant model: OR = 0.98, 95%CI 0.87-1.10, Pheterogeneity = 0.55; recessive model: OR = 0.95, 95%CI 0.72-1.25, Pheterogeneity = 0.07). We performed subgroup analyses by sample size and did not find an association. CONCLUSIONS This meta-analysis indicated that IRS2 rs1805097 polymorphism was not associated with colorectal and breast cancer risk.
Collapse
Affiliation(s)
- Yue Hu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Min Zhou
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Zhang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangquan Kong
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyan Hu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kang Li
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Li Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|