Dimerization and higher-order oligomerization are believed to play an important role in the activation of the EGFR (epidermal growth factor receptor). Understanding of the process has been limited by the lack of availability of suitable methods for the measurement in cells of distances in the range 10-100 nm, too short for imaging methods and too long for spectroscopic methods such as FRET. In the present article, we review the current state of our knowledge of EGFR oligomerization, and describe results from a new single-molecule localization method that has allowed the quantitative characterization of the distribution of EGFR-EGFR distances in cells. Recent data suggest the involvement of cortical actin in regulating the formation of EGFR complexes.
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http://dx.doi.org/10.1042/BST20130236 | DOI Listing |
<b>Background and Objective:</b> Cervical cancer is the second most common cancer in Indonesia, where traditional herbal treatments like <i>Zanthoxylum acanthopodium</i> (andaliman) are culturally used. Investigating protein biomarkers such as E7, pRb, EGFR and p16 can help assess the efficacy of these treatments. <b>Materials and Methods:</b> There were 5 groups in this study: 2 control groups (C- and C+) and 3 treatment groups (each receiving one of three doses).
View Article and Find Full Text PDFJ Cancer Res Clin Oncol
December 2024
Department of Breast Surgery, Xiangdong Hospital Affiliated to Hunan Normal University, Liling, 412200, Hunan, China.
Purpose: The objective of the current research was to assess the clinicopathological characteristics and long-term prognosis of triple-negative breast cancer (TNBC) patients with human epidermal growth factor receptor 2 (HER2)-low status following breast surgery.
Methods: A total of 202 TNBC patients treated at Qingdao Central Hospital from January 2010 to December 2019 were included, comprising 71 HER2-low and 131 HER2-zero patients. Propensity score matching (PSM) was applied to minimize differences between the cohorts.
Curr Issues Mol Biol
December 2024
Department of Clinical Oncology, School of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata 990-9585, Japan.
Epidermal growth factor receptor (EGFR) inhibition is crucial in treating RAS wild-type metastatic colorectal cancer, yet current testing methods may miss rare RAS variants affecting treatment efficacy. We analyzed 4122 colorectal cancer patients receiving anti-EGFR antibodies from the Center for Cancer Genomics and Advanced Therapeutics database, identifying 54 patients (1.3%) with rare RAS variants undetectable by standard testing.
View Article and Find Full Text PDFPharmacotherapy
December 2024
Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, Germany.
Introduction: Zongertinib (BI 1810631) is a potent, selective, and epidermal growth factor receptor (EGFR) wild-type sparing human epidermal growth factor receptor 2 (HER2) inhibitor. Based on in vitro data, the oxidative hepatic metabolism of zongertinib is principally driven by cytochrome P450 (CYP) 3A4/5. Therefore, zongertinib may be affected by strong CYP3A inducers, like carbamazepine.
View Article and Find Full Text PDFThorac Cancer
December 2024
Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo, Japan.
Concurrent mutations in tumor protein p53 (TP53) or Kelch-like ECH-associated protein 1-nuclear factor erythroid 2-related factor 2-pathway components are linked to poor outcomes in epidermal growth factor receptor (EGFR)-mutant non-small cell lung cancer (NSCLC), but the impact of triple mutations remains unclear. We report a case of EGFR-, TP53-, and Cullin 3 (CUL3)-mutant NSCLC in a 43-year-old woman with widespread metastases at diagnosis, including those in the contralateral lung, distant lymph nodes, pericardium, liver, bones, left adrenal gland, and brain. She received osimertinib as first-line therapy, but pericardial effusion and liver metastases progressed rapidly over 3 months, and she was switched to carboplatin and pemetrexed.
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