Screening potential antagonists of epidermal growth factor receptor fromMarsdenia tenacissimavia cell membrane chromatography model assisted by HPLC–ESI–IT–TOF–MS

2019 ◽  
Vol 33 (9) ◽  
Author(s):  
Yanni Lv ◽  
Xianpeng Shi ◽  
Jia Fu ◽  
Qianqian Jia ◽  
Yuanyuan Lin ◽  
...  
Keyword(s):  
Epidermal Growth Factor Receptor ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Cell Membrane ◽  
Growth Factor Receptor ◽  
Cell Membrane Chromatography ◽  
Membrane Chromatography ◽  
Epidermal Growth ◽  
Tof Ms

scholarly journals Epidermal growth factor receptor overexpression in resected pancreatic cancer.

2011 ◽  
Vol 29 (4_suppl) ◽  
pp. 317-317
Author(s):  
A. Mahipal ◽  
M. J. McDonald ◽  
A. Witkiewicz ◽  
B. I. Carr
Keyword(s):  
Pancreatic Cancer ◽  
Epidermal Growth Factor Receptor ◽  
Lymph Node ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Cell Membrane ◽  
Growth Factor Receptor ◽  
Membrane Staining ◽  
Egfr Expression ◽  
Epidermal Growth

317 Background: The effect of overexpression of epidermal growth factor receptor (EGFR) in pancreatic carcinoma is uncertain. In this study, we examine the association between EGFR overexpression (membrane and cytoplasmic) and histopathologic features and clinical outcomes in patients post resection. Methods: Seventy three patients underwent curative resection for pancreatic cancer from 4/08 to 4/10. Tumor EGFR expression was determined immunohistochemically using EGFR pharmDxTM kit. Cytoplasmic overexpression was considered positive if EGFR expression was seen in the cytoplasm in ≥10% of cells. Cell membrane staining scores were assigned: 0 (no membrane staining), 1+ (incomplete membrane staining in ≥ 10% of cells, 2+ (complete weak/moderate membrane staining in ≥ 10% of cells) and 3+ (complete heavy staining in ≥ 10% of cells). A score of 2+ and 3+ were considered as membrane overexpression. Comparisons between EGFR overexpression and clinicopathologic features were assessed by chi-square test with p-value < 0.05 as statistically significant. Proportional hazard regression was used to estimate progression free survival and overall survival. Results: Out of 73 patients, 43 (59%) and 50 (68%) patients had membrane and cytoplasmic EGFR overexpression respectively. AJCC stages were: stage I: 8, stage II: 63, stage III: 1 and stage IV: 1 patient. There was statistically significant correlation between cell membrane EGFR overexpression and lymph node positivity (p=0.04). Membrane EGFR overexpression was not significantly associated with local invasion, margin positivity, vascular invasion, perineural invasion, histologic grade or stage. Cytoplasmic EFGR overexpression was significantly associated with margin positivity (p=0.01) only. The hazard ratios (95% CI) for PFS and OS in patients with membrane EGFR overexpression was 1.37 (0.72-2.60) and 1.27 (0.62-2.61) respectively. The corresponding values for patients with cytoplasmic overexpression were 1.65 (0.80-3.37) and 1.25 (0.58-2.71) respectively. Conclusions: Membrane EGFR overexpression was associated with lymph node status and cytoplasmic EFGR overexpression with margin positivity. There was no association of EFGR expression and clinical outcomes. No significant financial relationships to disclose.

Bio-engineered cell membrane nanovesicles as precision theranostics for perihilar cholangiocarcinoma

2020 ◽  
Vol 8 (6) ◽  
pp. 1575-1579 ◽  
Author(s):  
Xiaojie Zhang ◽  
Yang Zhang ◽  
Yunming Zhang ◽  
Peng Lv ◽  
Pengfei Zhang ◽  
...  
Keyword(s):  
Epidermal Growth Factor Receptor ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Cell Membrane ◽  
Indocyanine Green ◽  
Growth Factor Receptor ◽  
Perihilar Cholangiocarcinoma ◽  
Human Epidermal Growth Factor ◽  
Epidermal Growth

We engineered a human epidermal growth factor receptor 2 (HER2) affibody to the surface of cell membrane nanovesicles (A-NVs) in a ligand-oriented manner and loaded them with indocyanine green (ICG) as precision theranostics for PHCC treatment.

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