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Chung HH, Seo SH, Kim H, Kim Y, Kim DW, Lee KH, Lee KT, Heo JS, Han IW, Park SM, Jang KT, Lee JK, Park JK. Postoperative Prognostic Predictors of Bile Duct Cancers: Clinical Analysis and Immunoassays of Tissue Microarrays. Gut Liver 2023; 17:159-169. [PMID: 36317517 PMCID: PMC9840923 DOI: 10.5009/gnl220044] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/02/2022] [Accepted: 04/14/2022] [Indexed: 01/14/2023] Open
Abstract
Background/Aims Cholangiocarcinoma frequently recurs even after curative resection. Expression levels of proteins such as epidermal growth factor receptor (EGFR), Snail, epithelial cadherin (E-cadherin), and interleukin-6 (IL-6) examined by immunohistochemistry have been studied as potential prognostic factors for cholangiocarcinoma. The aim of this study was to investigate significant factors affecting the prognosis of resectable cholangiocarcinoma. Methods Ninety-one patients who underwent surgical resection at Samsung Medical Center for cholangiocarcinoma from 1995 to 2013 were included in this study. Expression levels of E-cadherin, Snail, IL-6, membranous EGFR, and cytoplasmic EGFR were analyzed by immunohistochemistry using tissue microarray blocks made from surgical specimens. Results Patients with high levels of membranous EGFR in tissue microarrays had significantly shorter overall survival (OS) and disease-free survival (DFS): high membranous EGFR (score 0-2) 38.0 months versus low membranous EGFR (score 3) 14.4 months (p=0.008) and high membranous EGFR (score 0-2) 23.2 months versus low membranous EGFR (score 3) 6.1 months (p=0.004), respectively. On the other hand, E-cadherin, Snail, cytoplasmic EGFR, and IL-6 did not show significant association with OS or DFS. Patients with distant metastasis had significantly higher IL-6 levels than those with locoregional recurrence (p=0.01). Conclusions This study showed that overexpression of membranous EGFR was significantly associated with shorter OS and DFS in surgically resected bile duct cancer patients. In addition, higher IL-6 expression was a predictive marker for recurrence in cholangiocarcinoma patients with distant organ metastasis after surgical resection.
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Affiliation(s)
- Hwe Hoon Chung
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seung Hee Seo
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyemin Kim
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yuil Kim
- Department of Clinical Pathology, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
| | - Dong Wuk Kim
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kwang Hyuck Lee
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kyu Taek Lee
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jin Seok Heo
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - In Woong Han
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seon Mee Park
- Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Kee-Taek Jang
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea,Kee-Taek Jang, ORCIDhttps://orcid.org/0000-0001-7987-4437, E-mail
| | - Jong Kyun Lee
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea,Jong Kyun Lee, ORCIDhttps://orcid.org/0000-0002-9384-3079, E-mail
| | - Joo Kyung Park
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea,Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, Korea,Corresponding AuthorJoo Kyung Park, ORCIDhttps://orcid.org/0000-0002-9652-5287, E-mail
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2
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Zhang Z, Guo Y, Chen M, Chen F, Liu B, Shen C. Kaempferol potentiates the sensitivity of pancreatic cancer cells to erlotinib via inhibition of the PI3K/AKT signaling pathway and epidermal growth factor receptor. Inflammopharmacology 2021; 29:1587-1601. [PMID: 34322786 DOI: 10.1007/s10787-021-00848-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 07/04/2021] [Indexed: 12/01/2022]
Abstract
Erlotinib (ERL) is an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) of pancreatic cancer (PC). However, the clinical efficacy of ERL is limited due to the activation of alternative pathways that bypass the EGFR signaling. Kaempferol (KAE), a natural flavonoid compound, has been reported to possess potent anti-tumor and anti-inflammatory properties, and in this study, we aimed at identifying the sensitization effect of KAE on ERL monotherapy in PC cells and mouse models. Briefly, the CCK-8, colony formation, and flow cytometry were used to assess the proliferation and apoptosis of two PC cell lines in response to a treatment combination of KAE and ERL. Additionally, the drug-disease targets and related anti-PC mechanisms of KAE and ERL were predicted with a network pharmacology method. The survival outcome for PC patients with EGFR differential expression was evaluated through survival analysis. The molecular docking technique predicted the affinity between KAE and EGFR. Moreover, western blot (WB) and immunohistochemistry (IHC) analyses were applied to verify the expression levels of related proteins. As a result, in vitro results showed that the combination of KAE and ERL significantly inhibited cell proliferation and promoted cell apoptosis compared to that with ERL alone. Network pharmacology results demonstrated that KAE sensitized PC to ERL treatment may likely be related to the PI3K/AKT signaling pathway and EGFR TKI resistance. Survival analysis illustrated that PC patients with high expression of EGFR had a relative lower survival rate. Molecular docking results further suggested that KAE had a high binding affinity of - 8.9 kcal/mol with EGFR. WB results indicated that the combination of KAE and ERL dramatically downregulated the expression levels of p-EGFR, p-AKT, p-ERK1/2, and Bcl-2, and upregulated the expression levels of cleaved caspase-9, cleaved PARP, and Bax. The in vivo results revealed that treatment combination of KAE and ERL further reduced the volume and weight of subcutaneous grafted tumors. IHC results confirmed the WB results. These data imply that KAE may be a valid therapeutic candidate to potentiate PC cell sensitivity to ERL via inhibiting PI3K/AKT and EGFR signaling.
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Affiliation(s)
- Zhengguang Zhang
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| | - Yuanyuan Guo
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Meijuan Chen
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Feiyan Chen
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Bing Liu
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Cunsi Shen
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210023, China.
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Khan T, Seddon AM, Dalgleish AG, Khelwatty S, Ioannou N, Mudan S, Modjtahedi H. Synergistic activity of agents targeting growth factor receptors, CDKs and downstream signaling molecules in a panel of pancreatic cancer cell lines and the identification of antagonistic combinations: Implications for future clinical trials in pancreatic cancer. Oncol Rep 2020; 44:2581-2594. [PMID: 33125153 PMCID: PMC7640362 DOI: 10.3892/or.2020.7822] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/06/2020] [Indexed: 12/24/2022] Open
Abstract
Pancreatic cancer is one of the most aggressive, heterogeneous and fatal type of human cancers for which more effective therapeutic agents are urgently needed. Here, we investigated the sensitivity of a panel of seven human pancreatic cancer cell lines (HPCCLs) to treatment with various tyrosine kinase inhibitors (TKIs), cyclin-dependent kinase (CDK) inhibitors, an inhibitor of STAT3 stattic, and a cytotoxic agent gemcitabine both as single agents and in combination. The membranous expression of various receptors and the effect of selected agents on cell cycle distribution, cell signaling pathways and migration was determined using flow cytometry, western blot analysis and scratch wound healing assays, respectively. While the expression of both HER-3 and HER-4 was low or negative, the expression of EGFR and HER2 was high or intermediate in all HPCCLs. Of all the agents examined, the CDK1/2/5/9 inhibitor, dinacicilib, was the most potent agent which inhibited the proliferation of all seven HPCCLs with IC50 values of ≤10 nM, followed by SRC targeting TKI dasatinib (IC50 of ≤258 nM), gemcitabine (IC50 of ≤330 nM), stattic (IC50 of ≤2 µM) and the irreversible pan-HER TKI afatinib (IC50 of ≤2.95 µM). Treatment with afatinib and dasatinib inhibited the ligand-induced phosphorylation of EGFR and SRC respectively. Statistically significant associations were found between HER2 expression and response to treatment with the ALK/IGF-IR/InsR inhibitor ceritinib and fibroblast growth factor receptor (FGFR)1/2/3 inhibitor AZD4547, HER3 and IGF-IR expression and their response to treatment with TKIs targeting HER family members (erlotinib and afatinib), and c-MET and ALK7 expression and their response to treatment with stattic. Interestingly, treatment with a combination of afatinib with dasatinib and gemcitabine with dasatinib resulted in synergistic tumor growth inhibition in all HPCCLs examined. In contrast, the combination of afatinib with dinaciclib was found to be antagonistic. Finally, the treatment with afatinib, dasatinib and dinaciclib strongly inhibited the migration of all HPCCLs examined. In conclusion, the CDK1/2/5/9 inhibitor dinaciclib, irreversible pan-HER TKI afatinib and SRC targeting TKI dasatinib were most effective at inhibiting the proliferation and migration of HPCCLs and the combination of afatinib with dasatinib and gemcitabine with dasatinib led to synergistic tumor growth inhibition in all HPCCLs examined. Our results support further investigation on the therapeutic potential of these combinations in future clinical trials in pancreatic cancer.
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Affiliation(s)
- Tanzeel Khan
- School of Life Science, Pharmacy and Chemistry, Kingston University London, Surrey KT1 2EE, UK
| | - Alan M Seddon
- School of Life Science, Pharmacy and Chemistry, Kingston University London, Surrey KT1 2EE, UK
| | | | - Said Khelwatty
- School of Life Science, Pharmacy and Chemistry, Kingston University London, Surrey KT1 2EE, UK
| | - Nikolaos Ioannou
- School of Cancer and Pharmaceutical Sciences, King's College London, London SE5 9NT, UK
| | - Satvinder Mudan
- St George's Hospital, University of London, London SW17 0QT, UK
| | - Helmout Modjtahedi
- School of Life Science, Pharmacy and Chemistry, Kingston University London, Surrey KT1 2EE, UK
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4
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Fagman JB, Ljungman D, Falk P, Iresjö BM, Engström C, Naredi P, Lundholm K. EGFR, but not COX-2, protein in resected pancreatic ductal adenocarcinoma is associated with poor survival. Oncol Lett 2019; 17:5361-5368. [PMID: 31186753 PMCID: PMC6507389 DOI: 10.3892/ol.2019.10224] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 02/19/2019] [Indexed: 02/06/2023] Open
Abstract
The effects of EGFR and COX-2 protein overexpression on clinical outcomes in pancreatic ductal adenocarcinoma (PDAC) patients remains unclear. Therefore, the aim of the present study was to evaluate the protein expression of epithelial growth factor receptor (EGFR) and cyclooxygenase-2 (COX-2) in tumor cells in surgically resected PDAC, in comparison with clinicopathological characteristics and clinical outcomes. Immunohistochemical staining of formalin-fixed paraffin-embedded tissue derived from surgically resected tumors was performed. Tissue slides were evaluated for membrane wild-type EGFR and cytoplasmic COX-2 staining using a histoscore system. Statistical associations between EGFR and COX-2 staining and clinicopathological characteristics were examined to predict survival. In a cohort of 32 resected PDAC patients, high EGFR protein expression in tumor cells was significantly associated with shorter median overall survival (7.9 vs. 39.2 months, P=0.0038). The corresponding hazard ratio (HR) for patients with high EGFR protein expression in tumor cells was 3.12 [95% confidence interval (CI): 1.39–7.00, P=0.006]. COX-2 protein expression was not associated with survival (22.6 vs. 24.5 months P=0.60; HR 1.22 95% CI: 0.59–2.51, P=0.60). Following multivariate Cox regression analysis, high EGFR protein expression in tumor cells (P=0.043) remained as significant independent prognostic factor for survival. In conclusion, high wild-type EGFR protein expression, but not COX-2 protein expression, in tumor cells is a prognostic factor for reduced overall survival following pancreatic tumor resection, supporting a role for EGFR in identifying resected patients that may benefit from EGFR-targeted therapy.
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Affiliation(s)
- Johan Bourghardt Fagman
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden.,Department of Surgery, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden
| | - David Ljungman
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden.,Department of Surgery, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden
| | - Peter Falk
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden.,Department of Surgery, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden
| | - Britt-Marie Iresjö
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden.,Department of Surgery, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden
| | - Cecilia Engström
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden.,Department of Surgery, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden
| | - Peter Naredi
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden.,Department of Surgery, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden
| | - Kent Lundholm
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, SE-413 45 Gothenburg, Sweden.,Department of Surgery, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden
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5
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Wang JL, Fang CL, Tzeng YT, Hsu HL, Lin SE, Yu MC, Bai KJ, Wang LS, Liu HE. Prognostic value of localization of epidermal growth factor receptor in lung adenocarcinoma. J Biomed Sci 2018; 25:53. [PMID: 29950164 PMCID: PMC6022489 DOI: 10.1186/s12929-018-0451-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 05/22/2018] [Indexed: 11/10/2022] Open
Abstract
Background The nuclear translocation of epidermal growth factor receptor (EGFR) has been considered to play a role in carcinogenesis. However, the relevance of differentially located EGFR proteins in lung cancer remains unclear. Methods We examined 161 patients with primary lung adenocarcinoma to detect EGFR expression in lung cancer cells using immunohistochemistry and determined the correlations of EGFR expression with clinical characteristics, EGFR mutations, and survival time. Moreover, we graded complete membranous staining with strong intensity as high membranous EGFR (mEGFR) expression, and nuclear EGFR staining with strong intensity as high nuclear (nEGFR) expression. Results The prevalence of high mEGFR and nEGFR expression in lung adenocarcinoma was 42.86 and 39.13%, respectively. After multivariate analyses, high mEGFR expression was associated with a significantly reduced mortality risk in older patients, those with a history of smoking, and those without brain metastasis (hazard ratio[95% confidential interval], HR[95% CI] = 0.55[0.32~ 0.92]; 0.51[0.26~ 0.98] and 0.56[0.33~ 0.94], in overall survival, respectively). An association between high nEGFR expression and early recurrence was observed in patients with metastasis (HR[95% CI] =1.68[1.05~ 2.68], in progression-free survival). Notably, patients with low mEGFR and low nEGFR expression had the lowest survival rate in cases without brain metastasis (p = 0.018) and with a history of smoking (p = 0.062) and total EGFR (any high mEGFR or nEGFR) expression indicated a more favorable response to platinum-based chemotherapy regardless of EGFR mutations (HR[95% CI] =0.33[0.12–0.92]; adjusted HR[95% CI] = 0.36[0.13~ 1.02] with the use of tyrosine kinase inhibitor). Conclusions EGFR proteins at different cellular locations in lung adenocarcinoma might influence the biology of cancer cells and are an independent indicator of more favorable prognosis and treatment response. Electronic supplementary material The online version of this article (10.1186/s12929-018-0451-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jinn-Li Wang
- Division of Hematology Oncology, Department of Pediatrics, Wan Fang Hospital, Taipei Medical University, No.111, Sec. 3, Xinglong Rd, Wenshan Dist, 11696, Taipei, Taiwan.,Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, 250 Wuxing St. Taipei, 11031, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, Collage of Medicine, Taipei Medical University, 250 Wuxing St. Taipei, 11031, Taipei, Taiwan
| | - Chia-Lang Fang
- Department of Pathology, Wan Fang Hospital, Taipei Medical University, No.111, Sec. 3, Xinglong Rd, Wenshan Dist, 11696, Taipei, Taiwan.,Department of Pathology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wuxing St. Taipei, 11031, Taipei, Taiwan
| | - Yu-Tien Tzeng
- Division of Pulmonary Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, No.111, Sec. 3, Xinglong Rd, Wenshan Dist, 11696, Taipei, Taiwan
| | - Han-Lin Hsu
- Division of Pulmonary Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, No.111, Sec. 3, Xinglong Rd, Wenshan Dist, 11696, Taipei, Taiwan.,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, 250 Wuxing St. Taipei, 11031, Taipei, Taiwan
| | - Sey-En Lin
- Department of Pathology, Wan Fang Hospital, Taipei Medical University, No.111, Sec. 3, Xinglong Rd, Wenshan Dist, 11696, Taipei, Taiwan.,Department of Pathology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wuxing St. Taipei, 11031, Taipei, Taiwan
| | - Ming-Chih Yu
- Division of Pulmonary Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, No.111, Sec. 3, Xinglong Rd, Wenshan Dist, 11696, Taipei, Taiwan
| | - Kuan-Jen Bai
- Division of Pulmonary Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, No.111, Sec. 3, Xinglong Rd, Wenshan Dist, 11696, Taipei, Taiwan
| | - Liang-Shun Wang
- Graduate Institute of Clinical Medicine, Collage of Medicine, Taipei Medical University, 250 Wuxing St. Taipei, 11031, Taipei, Taiwan.,Division of Thoracic Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, No.291, Zhongzheng Rd., Zhonghe District, New Taipei City, 23561, Taiwan
| | - Hsingjin Eugene Liu
- Graduate Institute of Clinical Medicine, Collage of Medicine, Taipei Medical University, 250 Wuxing St. Taipei, 11031, Taipei, Taiwan. .,Division of Hematology Oncology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, No.111, Sec. 3, Xinglong Rd, Wenshan Dist, 11696, Taipei, Taiwan.
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Ubezio P, Falcetta F, Carrassa L, Lupi M. Integrated experimental and simulation study of the response to sequential treatment with erlotinib and gemcitabine in pancreatic cancer. Oncotarget 2017; 7:15492-506. [PMID: 26909860 PMCID: PMC4941256 DOI: 10.18632/oncotarget.7491] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 01/29/2016] [Indexed: 12/29/2022] Open
Abstract
The combination of erlotinib with gemcitabine is one of the most promising therapies for advanced pancreatic cancer. Aiming at optimizing this combination, we analyzed in detail the response to sequential treatments with erlotinib → gemcitabine and gemcitabine → erlotinib with an 18 h interval, adopting a previously established experimental/computational approach to quantify the cytostatic and cytotoxic effects at G1, S and G2M checkpoints. This assessment was achieved by contemporary fits of flow cytometric and time-lapse experiments in two human pancreatic cancer cell lines (BxPC-3 and Capan-1) with a mathematical model reproducing the fluxes of cells through the cycle during and after treatment.The S-phase checkpoint contributes in the response to erlotinib, suggesting that the G1 arrest may hamper S-phase cytotoxicity. The response to gemcitabine was driven by the dynamics of the progressive resumption from the S-phase arrest after drug washout. The effects induced by single drugs were used to simulate combined treatments, introducing changes when required. Gemcitabine → erlotinib was more than additive in both cell lines, strengthening the cytostatic effects on cells recovering from the arrest induced by gemcitabine. The interval in the erlotinib → gemcitabine sequence enabled to overcome the antagonist effect of G1 block on gemcitabine efficacy and improved the outcome in Capan-1 cells.
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Affiliation(s)
- Paolo Ubezio
- Department of Oncology, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milano, Italy
| | - Francesca Falcetta
- Department of Oncology, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milano, Italy
| | - Laura Carrassa
- Department of Oncology, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milano, Italy
| | - Monica Lupi
- Department of Oncology, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milano, Italy
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7
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Geißler AL, Geißler M, Kottmann D, Lutz L, Fichter CD, Fritsch R, Weddeling B, Makowiec F, Werner M, Lassmann S. ATM mutations and E-cadherin expression define sensitivity to EGFR-targeted therapy in colorectal cancer. Oncotarget 2017; 8:17164-17190. [PMID: 28199979 PMCID: PMC5370031 DOI: 10.18632/oncotarget.15211] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 01/16/2017] [Indexed: 12/23/2022] Open
Abstract
EGFR-targeted therapy is a key treatment approach in patients with RAS wildtype metastatic colorectal cancers (CRC). Still, also RAS wildtype CRC may be resistant to EGFR-targeted therapy, with few predictive markers available for improved stratification of patients. Here, we investigated response of 7 CRC cell lines (Caco-2, DLD1, HCT116, HT29, LS174T, RKO, SW480) to Cetuximab and correlated this to NGS-based mutation profiles, EGFR promoter methylation and EGFR expression status as well as to E-cadherin expression. Moreover, tissue specimens of primary and/or recurrent tumors as well as liver and/or lung metastases of 25 CRC patients having received Cetuximab and/or Panitumumab were examined for the same molecular markers. In vitro and in situ analyses showed that EGFR promoter methylation and EGFR expression as well as the MSI and or CIMP-type status did not guide treatment responses. In fact, EGFR-targeted treatment responses were also observed in RAS exon 2 p.G13 mutated CRC cell lines or CRC cases and were further linked to PIK3CA exon 9 mutations. In contrast, non-response to EGFR-targeted treatment was associated with ATM mutations and low E-cadherin expression. Moreover, down-regulation of E-cadherin by siRNA in otherwise Cetuximab responding E-cadherin positive cells abrogated their response. Hence, we here identify ATM and E-cadherin expression as potential novel supportive predictive markers for EGFR-targeted therapy.
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Affiliation(s)
- Anna-Lena Geißler
- Institute of Surgical Pathology, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Biology, University of Freiburg, Freiburg im Breisgau, Germany.,German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Miriam Geißler
- Institute of Surgical Pathology, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Biology, University of Freiburg, Freiburg im Breisgau, Germany
| | - Daniel Kottmann
- Institute of Surgical Pathology, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Biology, University of Freiburg, Freiburg im Breisgau, Germany
| | - Lisa Lutz
- Institute of Surgical Pathology, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Christiane D Fichter
- Institute of Surgical Pathology, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Biology, University of Freiburg, Freiburg im Breisgau, Germany
| | - Ralph Fritsch
- Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,Department of Internal Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,Comprehensive Cancer Center Freiburg, All Medical Center - University of Freiburg, Freiburg im Breisgau, Germany
| | - Britta Weddeling
- Institute of Surgical Pathology, University of Freiburg, Freiburg im Breisgau, Germany.,Comprehensive Cancer Center Freiburg, All Medical Center - University of Freiburg, Freiburg im Breisgau, Germany
| | - Frank Makowiec
- Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,Department of Surgery, University of Freiburg, Freiburg im Breisgau, Germany.,Comprehensive Cancer Center Freiburg, All Medical Center - University of Freiburg, Freiburg im Breisgau, Germany
| | - Martin Werner
- Institute of Surgical Pathology, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany.,Comprehensive Cancer Center Freiburg, All Medical Center - University of Freiburg, Freiburg im Breisgau, Germany
| | - Silke Lassmann
- Institute of Surgical Pathology, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany.,Comprehensive Cancer Center Freiburg, All Medical Center - University of Freiburg, Freiburg im Breisgau, Germany.,BIOSS Centre for Biological Signaling Studies, University of Freiburg, Freiburg im Breisgau, Germany
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8
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Chadha AS, Skinner HD, Gunther JR, Munsell MF, Das P, Minsky BD, Delclos ME, Chatterjee D, Wang H, Clemons M, George G, Singh PK, Katz MH, Fleming JB, Javle MM, Wolff RA, Varadhachary GR, Crane CH, Krishnan S. Phase I Trial of Consolidative Radiotherapy with Concurrent Bevacizumab, Erlotinib and Capecitabine for Unresectable Pancreatic Cancer. PLoS One 2016; 11:e0156910. [PMID: 27336466 PMCID: PMC4919049 DOI: 10.1371/journal.pone.0156910] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 05/20/2016] [Indexed: 01/06/2023] Open
Abstract
Purpose To determine the safety, tolerability and maximum tolerated dose (MTD) of addition of erlotinib to bevacizumab and capecitabine-based definitive chemoradiation (CRT) in unresectable pancreatic cancer. Methods Seventeen patients with CT-staged, biopsy-proven unresectable pancreatic cancer were enrolled between 3/2008 and 10/2010. Prior chemotherapy was permitted. Two patients each were enrolled at dose levels (DLs) 1–4 and 9 patients at DL 5. All patients received 50.4 Gy (GTV only) in 28 fractions with concurrent capecitabine, bevacizumab and erlotinib. Dose of each drug was escalated in 5 DLs using the continual reassessment method. Bevacizumab was escalated from 5mg/Kg q2weeks (DLs 1–4) to 10mg/Kg q2weeks (DL 5); daily erlotinib from 100mg/day (DLs 1–2) to 150 mg/Kg (DLs 3–5); and capecitabine from 400mg/m2 twice daily on days of radiation (DL 1) to 650mg/m2 (DLs 2–3) to 825 mg/m2 (DLs 4–5). Reassessment for potential resection was performed 6–8 weeks later. Results Sixteen patients received gemcitabine-based chemotherapy prior to CRT. With a median clinical follow-up of 10 months, no grade 3 toxicities were observed in DLs 1–4. Three (33%) patients at DL 5 developed a grade 3 acute toxicity (2 diarrhea, 1 rash). No grade 4 or 5 toxicities were seen. DL 4 was selected as the MTD; therefore, the recommended doses in combination with radiation are: bevacizumab, 5mg/Kg q2weeks; erlotinib, 150 mg/Kg daily; and capecitabine, 825mg/m2 BID. Median survival was 17.4 months. Of the five patients who underwent resection, 4 were originally deemed locally advanced and 1 was borderline resectable. Three patients had excellent pathological response (2 complete response and 20% viable tumor) at surgery, and the 2 patients with complete response are still alive at 61 and 67 months of follow up with no local or distant failures. Conclusions This chemoradiation regimen at the recommended dose levels is safe and tolerable for patients with unresectable pancreatic cancer and merits further evaluation.
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Affiliation(s)
- Awalpreet S. Chadha
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Heath D. Skinner
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Jillian R. Gunther
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Mark F. Munsell
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Prajnan Das
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Bruce D. Minsky
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Marc E. Delclos
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Deyali Chatterjee
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Huamin Wang
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Marilyn Clemons
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Geena George
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Pankaj K. Singh
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Matthew H. Katz
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Jason B. Fleming
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Milind M. Javle
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Robert A. Wolff
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Gauri R. Varadhachary
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Christopher H. Crane
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Sunil Krishnan
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
- * E-mail:
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Lakshmanan I, Seshacharyulu P, Haridas D, Rachagani S, Gupta S, Joshi S, Guda C, Yan Y, Jain M, Ganti AK, Ponnusamy MP, Batra SK. Novel HER3/MUC4 oncogenic signaling aggravates the tumorigenic phenotypes of pancreatic cancer cells. Oncotarget 2016; 6:21085-99. [PMID: 26035354 PMCID: PMC4673252 DOI: 10.18632/oncotarget.3912] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 05/05/2015] [Indexed: 01/28/2023] Open
Abstract
Several studies have demonstrated that MUC4 is involved in progression and metastasis of pancreatic cancer (PC). Here, we report that HER3/MUC4 interaction in HER2 low cells is critical in driving pancreatic tumorigenesis. Upon HER2 knockdown, we observed elevated expression of HER3 and MUC4 and their interactions, which was confirmed by immunoprecipitation and bioinformatics analyses. In paired human PC tissues, higher percentage of HER3 positivity (10/33, 30.3%; p = 0.001) was observed than HER2 (5/33, 15.1%; p = 0.031), which was further confirmed in spontaneous mice (KPC; KrasG12D; Trp53R172H/+; Pdx-Cre) tumors of different weeks. Mechanistically, increased phosphorylation of ERK and expression of PI3K and c-Myc were observed in HER2 knockdown cells, suggesting a positive role for HER3/MUC4 in HER2 low cells. Further, HER2 knockdown resulted in increased proliferation, motility and tumorigenicity of PC cells. Consistently, transient knockdown of HER3 by siRNA in HER2 knockdown cells led to decreased proliferation. These observations led us to conclude that HER3 interacts with MUC4 to promote proliferation in HER2 low PC cells. Further, deficiency of both HER2 and HER3 leads to decreased proliferation of PC cells. Hence targeting these newly identified HER3/MUC4 signals would improve the PC patients survival by intercepting MUC4 mediated oncogenic signaling.
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Affiliation(s)
- Imayavaramban Lakshmanan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | | | - Dhanya Haridas
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Satyanarayana Rachagani
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Suprit Gupta
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Suhasini Joshi
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Chittibabu Guda
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Ying Yan
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
| | - Maneesh Jain
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.,Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Apar K Ganti
- Department of Medicine, VA Nebraska Western Iowa Health Care System, Omaha, NE, USA.,Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Moorthy P Ponnusamy
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.,Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.,Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
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Hutchinson RA, Adams RA, McArt DG, Salto-Tellez M, Jasani B, Hamilton PW. Epidermal growth factor receptor immunohistochemistry: new opportunities in metastatic colorectal cancer. J Transl Med 2015; 13:217. [PMID: 26149458 PMCID: PMC4492076 DOI: 10.1186/s12967-015-0531-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Accepted: 05/12/2015] [Indexed: 02/06/2023] Open
Abstract
The treatment of cancer is becoming more precise, targeting specific oncogenic drivers with targeted molecular therapies. The epidermal growth factor receptor has been found to be over-expressed in a multitude of solid tumours. Immunohistochemistry is widely used in the fields of diagnostic and personalised medicine to localise and visualise disease specific proteins. To date the clinical utility of epidermal growth factor receptor immunohistochemistry in determining monoclonal antibody efficacy has remained somewhat inconclusive. The lack of an agreed reproducible scoring criteria for epidermal growth factor receptor immunohistochemistry has, in various clinical trials yielded conflicting results as to the use of epidermal growth factor receptor immunohistochemistry assay as a companion diagnostic. This has resulted in this test being removed from the licence for the drug panitumumab and not performed in clinical practice for cetuximab. In this review we explore the reasons behind this with a particular emphasis on colorectal cancer, and to suggest a way of resolving the situation through improving the precision of epidermal growth factor receptor immunohistochemistry with quantitative image analysis of digitised images complemented with companion molecular morphological techniques such as in situ hybridisation and section based gene mutation analysis.
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Affiliation(s)
- Ryan A Hutchinson
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7AE, Northern Ireland, UK.
- Waring Laboratory, Department of Pathology, Centre for Translational Pathology, University of Melbourne, Parkville, 3010, VIC, Australia.
| | - Richard A Adams
- Institute of Cancer and Genetics, Cardiff University School of Medicine, Institute of Medical Genetics Building, Heath Park, Cardiff, CF14 4XN, UK.
| | - Darragh G McArt
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7AE, Northern Ireland, UK.
| | - Manuel Salto-Tellez
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7AE, Northern Ireland, UK.
| | - Bharat Jasani
- Department of Biomedical Sciences, Nazarbayev University School of Medicine, Astana, 010000, Kazakhstan.
| | - Peter W Hamilton
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7AE, Northern Ireland, UK.
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Wu Y, Kim J, Elshimali Y, Sarkissyan M, Vadgama JV. Activation of Akt1 accelerates carcinogen-induced tumorigenesis in mammary gland of virgin and post-lactating transgenic mice. BMC Cancer 2014; 14:266. [PMID: 24742286 PMCID: PMC4021211 DOI: 10.1186/1471-2407-14-266] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 03/17/2014] [Indexed: 11/10/2022] Open
Abstract
Background Data from in vivo and in vitro studies suggest that activation of Akt regulates cell survival signaling and plays a key role in tumorigenesis. Hence, transgenic mice were created to explore the oncogenic role of Akt1 in the development of mammary tumors. Methods The transgenic mice were generated by expressing myristoylated-Akt1 (myr-Akt1) under the control of the MMTV-LTR promoter. The carcinogen 7, 12 dimethyl-1,2-benzanthracene (DMBA) was used to induce tumor formation. Results The MMTV driven myr-Akt1 transgene expression was detected primarily in the mammary glands, uterus, and ovaries. The expression level increased significantly in lactating mice, suggesting that the response was hormone dependent. The total Akt expression level in the mammary gland was also higher in the lactating mice. Interestingly, the expression of MMTVmyr-Akt1 in the ovaries of the transgenic mice caused significant increase in circulating estrogen levels, even at the post-lactation stage. Expression of myr-Akt1 in mammary glands alone did not increase the frequency of tumor formation. However, there was an increased susceptibility of forming mammary tumors induced by DMBA in the transgenic mice, especially in mice post-lactation. Within 34 weeks, DMBA induced mammary tumors in 42.9% of transgenic mice post-lactation, but not in wild-type mice post-lactation. The myr-Akt1 mammary tumors induced by DMBA had increased phosphorylated-Akt1 and showed strong expression of estrogen receptor (ERα) and epidermal growth factor receptor (EGFR). In addition, Cyclin D1 was more frequently up-regulated in mammary tumors from transgenic mice compared to tumors from wild-type mice. Overexpression of Cyclin D1, however, was not completely dependent on activated Akt1. Interestingly, mammary tumors that had metastasized to secondary sites had increased expression of Twist and Slug, but low expression of Cyclin D1. Conclusions In summary, the MMTVmyr-Akt1 transgenic mouse model could be useful to study mechanisms of ER-positive breast tumor development.
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Affiliation(s)
| | | | | | | | - Jaydutt V Vadgama
- Division of Cancer Research and Training, Charles R, Drew University of Medicine and Science, 1731 East 120th Street, Los Angeles, CA 90059, USA.
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12
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Mahipal A, Kothari N, Gupta S. Epidermal Growth Factor Receptor Inhibitors: Coming of Age. Cancer Control 2014; 21:74-9. [DOI: 10.1177/107327481402100111] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Amit Mahipal
- Clinical Research Unit, H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida
| | - Nishi Kothari
- Clinical Research Unit, H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida
| | - Shilpa Gupta
- Department of Genitourinary Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida
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13
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Handra-Luca A, Hammel P, Sauvanet A, Lesty C, Ruszniewski P, Couvelard A. EGFR expression in pancreatic adenocarcinoma. Relationship to tumour morphology and cell adhesion proteins. J Clin Pathol 2013; 67:295-300. [DOI: 10.1136/jclinpath-2013-201662] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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14
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Perini MV, Montagnini AL, Coudry R, Patzina R, Penteado S, Abdo EE, Diniz A, Jukemura J, da Cunha JEM. Prognostic significance of epidermal growth factor receptor overexpression in pancreas cancer and nodal metastasis. ANZ J Surg 2013; 85:174-8. [PMID: 24112413 DOI: 10.1111/ans.12399] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2013] [Indexed: 12/28/2022]
Abstract
BACKGROUND Identification of molecular markers in pancreatic adenocarcinoma (PA) has the potential to guide targeted therapy. The objective of this study is to determine the prognostic significance of epidermal growth factor receptor (EGFR) expression (membrane and cytoplasmic) in resected PA and its correlation with lymph node metastasis and survival. METHODS EGFR overexpression was determined by immunohistochemistry, and the pattern of expression was compared between the primary tumour, adjacent normal pancreas and involved lymph nodes. RESULTS A total of 88 patients had curative resection. No difference was found in mEGFR overexpression between tumoural and metastatic nodal tissues (P = 0.28). Median overall survival time was 22.9 months. Overall cumulative 1-, 3- and 5-year survival was 48%, 20% and 18%, respectively. In positive mEGFR tumour expression, survival was 46% at 1 year, 8% at 3 years and 0% at 5 years (P < 0.05). Univariate analysis showed that male gender, portal vein (PV) resection, perineural, lymphovascular and peri-pancreatic invasion, positive margins and positive mEGFR expression in tumour tissue had worse survival. Multivariate analysis showed that male gender, PV resection, vascular and perineural invasion remained independent predictors of poor survival. CONCLUSION Positive mEGFR overexpression is associated with decreased survival; however, it is not an independent prognostic factor.
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Affiliation(s)
- Marcos Vinicius Perini
- Department of Gastroenterology, Surgical Division, University of Sao Paulo Medical School, Sao Paulo, Brazil
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Jonsson EL, Nylander K, Hallén L, Laurell G. Effect of radiotherapy on expression of hyaluronan and EGFR and presence of mast cells in squamous cell carcinoma of the head and neck. Oncol Lett 2012. [PMID: 23205115 DOI: 10.3892/ol.2012.907] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Head and neck squamous cell carcinoma is a common form of cancer, and despite improvements in treatment during the last decades, survival rates have not significantly increased. There is therefore a need to better understand how these tumours and the adjacent tissues react to radiotherapy, the most common type of treatment for this group of tumours. In order to improve this understanding, the expression of hyaluronan (HA) and epidermal growth factor receptor (EGFR) and the presence of mast cells were mapped before and after radiotherapy using immunohistochemistry. The results showed HA and EGFR to have similar expression patterns in tumour tissue and histologically normal squamous epithelium prior to radiotherapy. Following radiotherapy, EGFR increased in histologically normal epithelium. An increased number of mast cells were also observed as a result of radiotherapy. No expression of EGFR was observed in the connective tissue either prior to or following radiotherapy.
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LIU WEIJUN, WANG KUNHUA, GONG KUNMEI, LI XIAOGANG, LUO KAIYUAN. Epidermal growth factor enhances MPC-83 pancreatic cancer cell migration through the upregulation of aquaporin 3. Mol Med Rep 2012; 6:607-10. [DOI: 10.3892/mmr.2012.966] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Accepted: 06/13/2012] [Indexed: 11/06/2022] Open
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