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Wilson PG, Abdelmoti L, Gao T, Galperin E. The expression of congenital Shoc2 variants induces AKT-dependent crosstalk activation of the ERK1/2 pathway. Hum Mol Genet 2024; 33:1592-1604. [PMID: 38881369 PMCID: PMC11373329 DOI: 10.1093/hmg/ddae100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/11/2024] [Accepted: 06/10/2024] [Indexed: 06/18/2024] Open
Abstract
The Shoc2 scaffold protein is crucial in transmitting signals within the Epidermal Growth Factor Receptor (EGFR)-mediated Extracellular signal-Regulated Kinase (ERK1/2) pathway. While the significance of Shoc2 in this pathway is well-established, the precise mechanisms through which Shoc2 governs signal transmission remain to be fully elucidated. Hereditary variants in Shoc2 are responsible for Noonan Syndrome with Loose anagen Hair (NSLH). However, due to the absence of known enzymatic activity in Shoc2, directly assessing how these variants affect its function is challenging. ERK1/2 phosphorylation is used as a primary parameter of Shoc2 function, but the impact of Shoc2 mutants on the pathway activation is unclear. This study investigates how the NSLH-associated Shoc2 variants influence EGFR signals in the context of the ERK1/2 and AKT downstream signaling pathways. We show that when the ERK1/2 pathway is a primary signaling pathway activated downstream of EGFR, Shoc2 variants cannot upregulate ERK1/2 phosphorylation to the level of the WT Shoc2. Yet, when the AKT and ERK1/2 pathways were activated, in cells expressing Shoc2 variants, ERK1/2 phosphorylation was higher than in cells expressing WT Shoc2. In cells expressing the Shoc2 NSLH mutants, we found that the AKT signaling pathway triggers the PAK activation, followed by phosphorylation of Raf-1/MEK1/2 and activation of the ERK1/2 signaling axis. Hence, our studies reveal a previously unrecognized feedback regulation downstream of the EGFR and provide additional evidence for the role of Shoc2 as a "gatekeeper" in controlling the selection of downstream effectors within the EGFR signaling network.
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Affiliation(s)
- Patricia G Wilson
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 741 S Limestone St, Lexington, KY 40536, United States
| | - Lina Abdelmoti
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 741 S Limestone St, Lexington, KY 40536, United States
| | - Tianyan Gao
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 741 S Limestone St, Lexington, KY 40536, United States
| | - Emilia Galperin
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 741 S Limestone St, Lexington, KY 40536, United States
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2
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Qi Y, Ma G. Comprehensive bioinformatic analysis reveals a fibroblast-related gene signature for the diagnosis of keloids. Heliyon 2024; 10:e35011. [PMID: 39157347 PMCID: PMC11327581 DOI: 10.1016/j.heliyon.2024.e35011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 07/12/2024] [Accepted: 07/22/2024] [Indexed: 08/20/2024] Open
Abstract
Aim A keloid is a fibroproliferative cutaneous disorder secondary to skin injury, caused by an imbalance in fibroblast proliferation and apoptosis. However, the pathogenesis is not fully understood. In this study, candidate genes for keloid were identified and used to construct a diagnostic model. Methods Three datasets related to keloids were downloaded from NCBI Gene Expression Omnibus. Fibroblast-related genes were screened, and fibroblast scores for the samples were determined. Then, a weighted gene co-expression network analysis (WGCNA) was used to identify modules and genes associated with keloids and the fibroblast score. Differentially expressed genes (DEGs) between keloid and control samples were identified and compared with fibroblast-related genes and genes in the modules. Overlapping genes were evaluated using functional enrichment analyses. Signature genes were further screened, and a diagnostic model was constructed. Finally, correlations between immune cell frequences and signature genes were analyzed. Results In total, 124 fibroblast-related genes were obtained, and the fibroblast score was an effective indicator of the sample type. WGCNA revealed five modules that were significantly correlated with both the disease state and fibroblast scores, including 1760 genes. Additionally, 589 DEGs were identified, including 16 that overlapped with fibroblast-related genes and genes identified in the WGCNA. These genes were related to cell proliferation and apoptosis and were involved in FoxO, Rap1, p53, Ras, MAPK, and PI3K-Akt pathways. Finally, a six fibroblast-related gene signature (CCNB1, EGFR, E2F8, BTG1, TP63, and IGF1) was identified and used for diagnostic model construction. The proportions of regulatory T cells and macrophages were significantly higher in keloid tissues than in controls. Conclusion The established model based on CCNB1, EGFR, E2F8, BTG1, TP63, and IGF1 showed good performance and may be useful for keloid diagnosis.
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Affiliation(s)
- Yue Qi
- Plastic Surgery Hospital Chinese Academy of Medical Sciences, 33rd BaDaChu Street, Beijing, 100144, China
| | - GuiE Ma
- Plastic Surgery Hospital Chinese Academy of Medical Sciences, 33rd BaDaChu Street, Beijing, 100144, China
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3
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Khan IR, Sadida HQ, Hashem S, Singh M, Macha MA, Al-Shabeeb Akil AS, Khurshid I, Bhat AA. Therapeutic implications of signaling pathways and tumor microenvironment interactions in esophageal cancer. Biomed Pharmacother 2024; 176:116873. [PMID: 38843587 DOI: 10.1016/j.biopha.2024.116873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 05/21/2024] [Accepted: 06/03/2024] [Indexed: 06/20/2024] Open
Abstract
Esophageal cancer (EC) is significantly influenced by the tumor microenvironment (TME) and altered signaling pathways. Downregulating these pathways in EC is essential for suppressing tumor development, preventing metastasis, and enhancing therapeutic outcomes. This approach can increase tumor sensitivity to treatments, enhance patient outcomes, and inhibit cancer cell proliferation and spread. The TME, comprising cellular and non-cellular elements surrounding the tumor, significantly influences EC's development, course, and treatment responsiveness. Understanding the complex relationships within the TME is crucial for developing successful EC treatments. Immunotherapy is a vital TME treatment for EC. However, the heterogeneity within the TME limits the application of anticancer drugs outside clinical settings. Therefore, identifying reliable microenvironmental biomarkers that can detect therapeutic responses before initiating therapy is crucial. Combining approaches focusing on EC signaling pathways with TME can enhance treatment outcomes. This integrated strategy aims to interfere with essential signaling pathways promoting cancer spread while disrupting factors encouraging tumor development. Unraveling aberrant signaling pathways and TME components can lead to more focused and efficient treatment approaches, identifying specific cellular targets for treatments. Targeting the TME and signaling pathways may reduce metastasis risk by interfering with mechanisms facilitating cancer cell invasion and dissemination. In conclusion, this integrative strategy has significant potential for improving patient outcomes and advancing EC research and therapy. This review discusses the altered signaling pathways and TME in EC, focusing on potential future therapeutics.
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Affiliation(s)
- Inamu Rashid Khan
- Department of Zoology, Central University of Kashmir, Ganderbal, Jammu and Kashmir 191201, India
| | - Hana Q Sadida
- Department of Human Genetics-Precision Medicine in Diabetes, Obesity and Cancer Program, Sidra Medicine, Doha 26999, Qatar
| | - Sheema Hashem
- Department of Human Genetics, Sidra Medicine Doha 26999, Qatar
| | - Mayank Singh
- Department of Medical Oncology (Lab), Dr. B. R. Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Muzafar A Macha
- Watson-Crick Centre for Molecular Medicine, Islamic University of Science and Technology, Awantipora, Jammu and Kashmir 192122, India
| | - Ammira S Al-Shabeeb Akil
- Department of Human Genetics-Precision Medicine in Diabetes, Obesity and Cancer Program, Sidra Medicine, Doha 26999, Qatar
| | - Ibraq Khurshid
- Department of Zoology, Central University of Kashmir, Ganderbal, Jammu and Kashmir 191201, India.
| | - Ajaz A Bhat
- Department of Human Genetics-Precision Medicine in Diabetes, Obesity and Cancer Program, Sidra Medicine, Doha 26999, Qatar.
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4
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Tolue Ghasaban F, Ghanei M, Mahmoudian RA, Taghehchian N, Abbaszadegan MR, Moghbeli M. MicroRNAs as the critical regulators of epithelial mesenchymal transition in pancreatic tumor cells. Heliyon 2024; 10:e30599. [PMID: 38726188 PMCID: PMC11079401 DOI: 10.1016/j.heliyon.2024.e30599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/26/2024] [Accepted: 04/30/2024] [Indexed: 05/12/2024] Open
Abstract
Pancreatic cancer (PC), as one of the main endocrine and digestive systems malignancies has the highest cancer related mortality in the world. Lack of the evident clinical symptoms and appropriate diagnostic markers in the early stages of tumor progression are the main reasons of the high mortality rate among PC patients. Therefore, it is necessary to investigate the molecular pathways involved in the PC progression, in order to introduce novel early diagnostic methods. Epithelial mesenchymal transition (EMT) is a critical cellular process associated with pancreatic tumor cells invasion and distant metastasis. MicroRNAs (miRNAs) are also important regulators of EMT process. In the present review, we discussed the role of miRNAs in regulation of EMT process during PC progression. It has been reported that the miRNAs mainly regulate the EMT process in pancreatic tumor cells through the regulation of EMT-specific transcription factors and several signaling pathways such as WNT, NOTCH, TGF-β, JAK/STAT, and PI3K/AKT. Considering the high stability of miRNAs in body fluids and their role in regulation of EMT process, they can be introduced as the non-invasive diagnostic markers in the early stages of malignant pancreatic tumors. This review paves the way to introduce a non-invasive EMT based panel marker for the early tumor detection among PC patients.
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Affiliation(s)
- Faezeh Tolue Ghasaban
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Ghanei
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reihaneh Alsadat Mahmoudian
- Basic Sciences Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Cancer Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Negin Taghehchian
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Meysam Moghbeli
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Parisi F, Aurisicchio L, Pecorari A, Poli A, Millanta F. A Preliminary Evaluation of the Prognostic Role of HER-2 and HER-3 Immunohistochemical Expression in Canine Melanomas. Animals (Basel) 2024; 14:1400. [PMID: 38791617 PMCID: PMC11117344 DOI: 10.3390/ani14101400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/25/2024] [Accepted: 05/03/2024] [Indexed: 05/26/2024] Open
Abstract
Canine melanoma is a malignant and aggressive neoplasm showing clinical, histological, and molecular features similar to the human counterpart. In human medicine, epidermal growth factor receptors (EGFRs) have already been suggested as prognostic markers and potential therapeutic targets in cutaneous melanoma. The aim of this study was to evaluate the expression of HER-2 and HER-3 in canine melanomas by immunohistochemistry and correlate their expression to the clinicopathological parameters of the examined tumors. Thirty-seven canine melanoma samples were recruited. Data regarding signalment and clinical parameters were also collected. The population was composed of 18 cutaneous, 16 oral/mucosal, and three digital/foot pad melanomas. Histopathological investigations were carried out to analyze histological type, ulceration, and mitotic count. On each sample, immunohistochemistry was performed using an anti-Melan-A or anti-Melanoma antigen, i.e., anti-HER-2 and anti-HER-3 antibodies. HER-2 and HER-3 positivity were classified using already established scoring criteria and a statistical analysis was carried out. The results highlighted that HER-2 expression was observed in 48.6% of the samples and HER-3 expression in 18.9%. The highest HER 2 score (3+) was recorded in 16.2% of the samples, while the coexpression of the two receptors was detected in 13.5% of the samples. A statistically significant association (p < 0.05) was observed between the expression of HER-2 and HER-3 and the presence of ulceration in oromucosal tumors. This work confirms the expression of HER-2 and HER-3 in canine melanomas and suggests a putative association with negative prognostic parameters. Further studies are necessary to strengthen these data by increasing the samples size and combining pathological examinations with molecular biology in the investigation of EGFR family receptors.
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Affiliation(s)
- Francesca Parisi
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (A.P.); (A.P.); (F.M.)
| | | | - Arianna Pecorari
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (A.P.); (A.P.); (F.M.)
| | - Alessandro Poli
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (A.P.); (A.P.); (F.M.)
| | - Francesca Millanta
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (A.P.); (A.P.); (F.M.)
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Trammel J, Amusan O, Hultgren A, Raikhy G, Bodily JM. Epidermal growth factor receptor-dependent stimulation of differentiation by human papillomavirus type 16 E5. Virology 2024; 590:109952. [PMID: 38103269 PMCID: PMC10842332 DOI: 10.1016/j.virol.2023.109952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/14/2023] [Accepted: 11/22/2023] [Indexed: 12/19/2023]
Abstract
Human papillomaviruses (HPVs) infect keratinocytes of stratified squamous epithelia, and persistent infection with high-risk HPV types, such as HPV16, may lead to the development of malignancies. HPV evades host immunity in part by linking its gene expression to the host differentiation program, and therefore relies on differentiation to complete its life cycle. Based on previous reports indicating that the HPV16 protein E5 is important in the late stages of the differentiation-dependent life cycle, we found that organotypic cultures harboring HPV16 genomes lacking E5 showed reduced markers of terminal differentiation compared to wild type HPV16-containing cultures. We found that epidermal growth factor receptor (EGFR) levels and activation were increased in an E5-depdendent manner in these tissues, and that EGFR promoted terminal differentiation and expression of the HPV16 L1 gene. These findings suggest a function for E5 in preserving the ability of HPV16 containing keratinocytes to differentiate, thus facilitating the production of new virus progeny.
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Affiliation(s)
- Jessica Trammel
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center - Shreveport, Shreveport, LA, 71103, USA
| | - Oluwamuyiwa Amusan
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center - Shreveport, Shreveport, LA, 71103, USA
| | - Allison Hultgren
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center - Shreveport, Shreveport, LA, 71103, USA; School of Medicine, Louisiana State University Health Sciences Center - Shreveport, Shreveport, LA, 71103, USA
| | - Gaurav Raikhy
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center - Shreveport, Shreveport, LA, 71103, USA
| | - Jason M Bodily
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center - Shreveport, Shreveport, LA, 71103, USA.
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Hashem S, Zare SY, Fadare O. HER2 Status Assessment in Endometrial Serous Carcinoma: Comparative Analysis of Two Proposed Testing and Interpretation Algorithms. Int J Gynecol Pathol 2024; 43:4-14. [PMID: 37406350 DOI: 10.1097/pgp.0000000000000943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
HER2 status is now routinely assessed in endometrial serous carcinoma (ESC) due to the reported predictive value of HER2 protein overexpression and/or gene amplification. Herein the authors compare 2 proposed testing and interpretation guidelines for HER2 in ESC. Forty-three consecutive cases of ESC that had been dually tested by both HER2 immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) were interpreted using 2 sets of guidelines. Guideline set 1 (GS1) is the 2018 American Society of Clinical Oncology/College of American Pathologists guidelines for breast cancer. Guideline set 2 (GS2) is a recent proposal that is a slight modification of the enrollment criteria for the clinical trial (NCT01367002) that demonstrated a survival benefit for anti-HER2 therapy in ESC. By IHC, GS1 and GS2, respectively classified 39.5% (17/43) and 28% (12/43) of ESC as HER2-negative, 37.2% (16/43) and 53.4% (23/43) as HER2 equivocal, and 23.2% (10/43) and 18.6% (8/43) as HER2-positive ( P > 0.05 for all). IHC and FISH were highly concordant at the extremes using either set of guidelines, as no cases were found to be IHC3+/FISH-negative or IHC 0-1+/FISH-positive. GS1 and GS2 were comparable regarding the proportion of IHC equivocal cases that were HER2 amplified by FISH (19% vs 23% respectively; [ P = 0.71]). GS1 and GS2 displayed 98% (42/43) concordance regarding the final (IHC and/or FISH-based) classification of tumors as being HER2-positive or negative, and the same 13 cases were ultimately classified as HER2 amplified using either GS1 or GS2. One "discordant" case was classified as HER2-positive using GS2 but HER2-negative using GS1 (HER2 IHC score 2+ using both guidelines, HER2:CEP17 signal ratio of 3, HER2 signal number of 3.4). Six (14%) of the 43 cases (FISH Groups: 2, 3, and 4) would require IHC results to interpret the FISH findings using GS1. Because GS1 requires that the HER2 IHC staining be observed within a homogeneous and contiguous invasive cell population, and this is not a requirement in GS2, GS2 may be better suited for ESC given its frequently heterogeneous staining pattern. Additional studies may be required on the optimal interpretation of problematic dual-probe FISH scenarios in GS2 and the necessity for IHC correlation in such scenarios. Using either set of guidelines, our findings support a reflex testing strategy of restricting FISH testing to cases that are IHC equivocal.
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Çoban G. Structure-based virtual screening and molecular dynamics simulations for detecting novel candidates for allosteric inhibition of EGFRT790M. J Biomol Struct Dyn 2024; 42:571-597. [PMID: 37029759 DOI: 10.1080/07391102.2023.2194425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 03/17/2023] [Indexed: 04/09/2023]
Abstract
Structure-based virtual screening (SBVS) was applied to predict lead compounds for the allosteric inhibition of epidermal growth factor receptor (EGFR) by screening the library of chemical compounds prepared from the e-molecules chemical database. The library of chemical compounds consisting of 133,083 ligands was composed by evaluating the chemical and physical properties of e-molecules chemicals. The prepared library was screened by CCDC Gold software in the allosteric binding site of EGFRT790M using the library and virtual screening default parameters to filter out, respectively. The GOLD fitness scores 75 and 80 were selected as threshold values for the library and virtual screening processes, respectively. After the docking study, molecular dynamics simulations (MDS) of the top 25 compounds were built for calculating binding free energies from their MDS trajectories. MM-GBSA binding free energies for the compounds were computed from 20 ns MDS, 50 ns MDS and 200 ns MDS trajectories to filter out the candidates. Following MM-GBSA/MM-PBSA binding free energy calculations, six compounds were detected as the most promising candidates for allosteric inhibition of EGFRT790M. The dynamic behaviors of final compounds inside EGFR T790M were searched using structure stability, binding modes and energy decomposition analysis. Besides, the estimated inhibitors were exposed to docking study and MM-GBSA/MM-PBSA binding free energy calculations inside wild-type EGFR, respectively, to be determined their selectivity towards mutant form. Five of the estimated inhibitors displayed estimated selectivity towards EGFRT790M. Besides the ADMET properties of the estimated inhibitors were predicted by PreAdmet tools.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Güneş Çoban
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ege University, Bornova, Izmir, Turkey
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9
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Wilson P, Abdelmoti L, Gao T, Galperin E. The expression of congenital Shoc2 variants induces AKT-dependent feedback activation of the ERK1/2 pathway. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.23.573219. [PMID: 38187642 PMCID: PMC10769455 DOI: 10.1101/2023.12.23.573219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
The Shoc2 scaffold protein is crucial in transmitting signals within the Epidermal Growth Factor Receptor (EGFR)-mediated Extracellular signal-regulated Kinase (ERK1/2) pathway. While the significance of Shoc2 in this pathway is well-established, the precise mechanisms through which Shoc2 governs signal transmission remain to be fully elucidated. Hereditary mutations in Shoc2 are responsible for Noonan Syndrome with Loose anagen Hair (NSLH). However, due to the absence of known enzymatic activity in Shoc2, directly assessing how these mutations affect its function is challenging. ERK1/2 phosphorylation is used as a primary parameter of Shoc2 function, but the impact of Shoc2 mutants on the pathway activation is unclear. This study investigates how the NSLH-associated Shoc2 variants influence EGFR signals in the context of the ERK1/2 and AKT downstream signaling pathways. We show that when the ERK1/2 pathway is a primary signaling pathway activated downstream of EGFR, Shoc2 variants cannot upregulate ERK1/2 phosphorylation to the level of the WT Shoc2. Yet, when the AKT and ERK1/2 pathways were activated, in cells expressing Shoc2 variants, ERK1/2 phosphorylation was higher than in cells expressing WT Shoc2. We found that, in cells expressing the Shoc2 NSLH mutants, the AKT signaling pathway triggers the PAK activation, followed by phosphorylation and Raf-1/MEK1/2 /ERK1/2 signaling axis activation. Hence, our studies reveal a previously unrecognized feedback regulation downstream of the EGFR and provide evidence for the Shoc2 role as a "gatekeeper" in controlling the selection of downstream effectors within the EGFR signaling network.
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Androutsopoulos G, Styliara I, Zarogianni E, Lazurko N, Valasoulis G, Michail G, Adonakis G. The ErbB Signaling Network and Its Potential Role in Endometrial Cancer. EPIGENOMES 2023; 7:24. [PMID: 37873809 PMCID: PMC10594534 DOI: 10.3390/epigenomes7040024] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/24/2023] [Accepted: 09/26/2023] [Indexed: 10/25/2023] Open
Abstract
Endometrial cancer (EC) is the second most common malignancy of the female reproductive system worldwide. The updated EC classification emphasizes the significant role of various signaling pathways such as PIK3CA-PIK3R1-PTEN and RTK/RAS/β-catenin in EC pathogenesis. Some of these pathways are part of the EGF system signaling network, which becomes hyperactivated by various mechanisms and participates in cancer pathogenesis. In EC, the expression of ErbB receptors is significantly different, compared with the premenopausal and postmenopausal endometrium, mainly because of the increased transcriptional activity of ErbB encoding genes in EC cells. Moreover, there are some differences in ErbB-2 receptor profile among EC subgroups that could be explained by the alterations in pathophysiology and clinical behavior of various EC histologic subtypes. The fact that ErbB-2 receptor expression is more common in aggressive EC histologic subtypes (papillary serous and clear cell) could indicate a future role of ErbB-targeted therapies in well-defined EC subgroups with overexpression of ErbB receptors.
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Affiliation(s)
- Georgios Androutsopoulos
- Gynaecological Oncology Unit, Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
| | - Ioanna Styliara
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
| | - Evgenia Zarogianni
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
| | - Nadia Lazurko
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
| | - George Valasoulis
- Department of Obstetrics and Gynaecology, Medical School, University of Thessaly, 41334 Larisa, Greece;
- Hellenic National Public Health Organization—ECDC, 15123 Athens, Greece
| | - Georgios Michail
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
| | - Georgios Adonakis
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
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Ngaha TYS, Zhilenkova AV, Essogmo FE, Uchendu IK, Abah MO, Fossa LT, Sangadzhieva ZD, D. Sanikovich V, S. Rusanov A, N. Pirogova Y, Boroda A, Rozhkov A, Kemfang Ngowa JD, N. Bagmet L, I. Sekacheva M. Angiogenesis in Lung Cancer: Understanding the Roles of Growth Factors. Cancers (Basel) 2023; 15:4648. [PMID: 37760616 PMCID: PMC10526378 DOI: 10.3390/cancers15184648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/11/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Research has shown the role of growth factors in lung cancer angiogenesis. Angiogenesis promotes lung cancer progression by stimulating tumor growth, enhancing tumor invasion, contributing to metastasis, and modifying immune system responses within the tumor microenvironment. As a result, new treatment techniques based on the anti-angiogenic characteristics of compounds have been developed. These compounds selectively block the growth factors themselves, their receptors, or the downstream signaling pathways activated by these growth factors. The EGF and VEGF families are the primary targets in this approach, and several studies are being conducted to propose anti-angiogenic drugs that are increasingly suitable for the treatment of lung cancer, either as monotherapy or as combined therapy. The efficacy of the results are encouraging, but caution must be placed on the higher risk of toxicity, outlining the importance of personalized follow-up in the management of these patients.
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Affiliation(s)
- Tchawe Yvan Sinclair Ngaha
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
- Department of Public Health, James Lind Institute, Rue de la Cité 1, 1204 Geneva, Switzerland
| | - Angelina V. Zhilenkova
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
| | - Freddy Elad Essogmo
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
| | - Ikenna K. Uchendu
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
- Medical Laboratory Science Department, Faculty of Health Science and Technology, College of Medicine, University of Nigeria, Enugu Campus, Enugu 410001, Nigeria
| | - Moses Owoicho Abah
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
| | - Lionel Tabola Fossa
- Department of Oncology, Bafoussam Regional Hospital, Bafoussam 980, Cameroon;
| | - Zaiana D. Sangadzhieva
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
| | - Varvara D. Sanikovich
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
| | - Alexander S. Rusanov
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
| | - Yuliya N. Pirogova
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
| | - Alexander Boroda
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
| | - Alexander Rozhkov
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
| | - Jean D. Kemfang Ngowa
- Faculty of Medicine and Biomedical Sciences, University of Yaounde I, Yaounde 1364, Cameroon;
| | - Leonid N. Bagmet
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
| | - Marina I. Sekacheva
- Institute for Personalized Oncology, Center for Digital Biodesign and Personalized Healthcare, First Moscow State Medical University of the Ministry of Health of Russia (Sechenov University), 8-2 Trubetskaya str., Moscow 119991, Russia; (T.Y.S.N.); (A.V.Z.); (F.E.E.); (I.K.U.); (M.O.A.); (Z.D.S.); (V.D.S.); (A.S.R.); (Y.N.P.); (A.B.); (A.R.); (L.N.B.)
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12
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A Novel Mechanism Underlying the Inhibitory Effects of Trastuzumab on the Growth of HER2-Positive Breast Cancer Cells. Cells 2022; 11:cells11244093. [PMID: 36552857 PMCID: PMC9777316 DOI: 10.3390/cells11244093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
To improve the efficacy of trastuzumab, it is essential to understand its mechanism of action. One of the significant issues that makes it difficult to determine the precise mechanism of trastuzumab action is the formation of various HER receptor dimers in HER2-positive breast cancer cells. So far, studies have focused on the role of HER2-HER3 heterodimers, and little is known regarding EGFR-HER2 heterodimers. Here, we study the role of trastuzumab on the cell signaling and cell proliferation mediated by EGFR-HER2 heterodimers in BT474 and SRBR3 cells. EGF stimulates the formation of both EGFR homodimer and EGFR-HER2 heterodimer. Trastuzumab only binds to HER2, not EGFR. Therefore, any effects of trastuzumab on EGF-induced activation of EGFR, HER2, and downstream signaling proteins, as well as cell proliferation, are through its effects on EGFR-HER2 heterodimers. We show that trastuzumab inhibits EGF-induced cell proliferation and cell cycle progression in BT474 and SKBR3 cells. Interestingly trastuzumab strongly inhibits EGF-induced Akt phosphorylation and slightly inhibits EGF-induced Erk activation, in both BT474 and SKBR3 cells. These data suggest the presence of a novel mechanism that allows trastuzumab to inhibit EGR-induced Akt activation and cell proliferation, without blocking EGF-induced EGFR-HER2 heterodimerization and activation. We show that trastuzumab inhibits EGF-induced lipid raft localization of the EGFR-HER2 heterodimer. Disruption of the lipid raft with MβCD blocks HER2-mediated AKT activation in a similar way to trastuzumab. MβCD and trastuzumab synergically inhibit AKT activation. We conclude that trastuzumab inhibits EGF-induced lipid raft localization of EGFR-HER2 heterodimer, which leads to the inhibition of Akt phosphorylation and cell proliferation, without blocking the formation and phosphorylation of the EGFR-HER2 heterodimer.
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13
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Kilroy MK, Park S, Feroz W, Patel H, Mishra R, Alanazi S, Garrett JT. HER3 Alterations in Cancer and Potential Clinical Implications. Cancers (Basel) 2022; 14:cancers14246174. [PMID: 36551663 PMCID: PMC9776947 DOI: 10.3390/cancers14246174] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
In recent years, the third member of the HER family, kinase impaired HER3, has become a target of interest in cancer as there is accumulating evidence that HER3 plays a role in tumor growth and progression. This review focuses on HER3 activation in bladder, breast, colorectal, and lung cancer disease progression. HER3 mutations occur at a rate up to ~10% of tumors dependent on the tumor type. With patient tumors routinely sequenced for gene alterations in recent years, we have focused on HER3 mutations in bladder, breast, colon, and lung cancers particularly in response to targeted therapies and the potential to become a resistance mechanism. There are currently several HER3 targeting drugs in the pipeline, possibly improving outcomes for cancer patients with tumors containing HER3 activation and/or alterations.
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Affiliation(s)
- Mary Kate Kilroy
- Department of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - SoYoung Park
- Department of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
- Cancer Research Scholars Program, College of Allied Health Sciences, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Wasim Feroz
- Department of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Hima Patel
- Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Rosalin Mishra
- Department of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Samar Alanazi
- Department of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Joan T. Garrett
- Department of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
- Correspondence:
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14
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Chen L, Davelaar J, Gaddam S, Kosari K, Nissen N, Chaux G, Lee C, Vail E, Hendifar A, Gong J, Reckamp K, Osipov A. Early Application of Next-Generation Sequencing Identifies Pancreatic Mass as Metastasis From an EGFR-Mutated Lung Adenocarcinoma. J Natl Compr Canc Netw 2022; 21:6-11. [PMID: 36395704 DOI: 10.6004/jnccn.2022.7053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/07/2022] [Indexed: 11/18/2022]
Abstract
Pancreatic metastasis of primary lung adenocarcinoma is a rare occurrence, accounting for <0.3% of all pancreatic malignancies. Given that the prognosis and treatment options for primary pancreatic cancer differ greatly from pancreatic metastases from a primary site, an accurate diagnosis is critical. This report presents a unique case of a 65-year-old man who was admitted with significant unintentional weight loss, fatigue, abdominal pain, and jaundice, and found to have a pancreatic mass initially thought to be primary pancreatic adenocarcinoma and subsequently diagnosed as an EGFR-mutated lung adenocarcinoma with metastases to the pancreas via early application of next-generation sequencing (NGS). The use of NGS early in the patient's clinical course not only changed the treatment strategy but also drastically altered the prognosis. Although metastatic pancreatic adenocarcinoma has a poor prognosis and survival rate, treatment of EGFR-mutated non-small cell lung cancer with EGFR tyrosine kinase inhibitors is associated with high response rates. Importantly, our case demonstrates that timely application of NGS very early in the disease course is paramount to the diagnosis, management, and prognosis of solid malignancies.
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Affiliation(s)
- Luxi Chen
- 1Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - John Davelaar
- 1Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Srinivas Gaddam
- 2Department of Medicine, Gastroenterology, Cedars-Sinai Medical Center, Los Angeles, California
| | - Kambiz Kosari
- 3Department of Hepatobiliary and Pancreatic Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Nicholas Nissen
- 3Department of Hepatobiliary and Pancreatic Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - George Chaux
- 4Department of Medicine, Pulmonary and Lung Transplant Program, Cedars-Sinai Medical Center, Los Angeles, California
| | - Christopher Lee
- 5Department of Radiology, Cedars-Sinai Medical Center, Los Angeles, California
| | - Eric Vail
- 6Department of Pathology, Cedars-Sinai Medical Center, Los Angeles, California
| | - Andrew Hendifar
- 1Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Jun Gong
- 1Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Karen Reckamp
- 1Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Arsen Osipov
- 1Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
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15
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Van Hiep N, Sun WL, Feng PH, Lin CW, Chen KY, Luo CS, Dung LN, Van Quyet H, Wu SM, Lee KY. Heparin binding epidermal growth factor-like growth factor is a prognostic marker correlated with levels of macrophages infiltrated in lung adenocarcinoma. Front Oncol 2022; 12:963896. [PMID: 36439487 PMCID: PMC9686304 DOI: 10.3389/fonc.2022.963896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 10/27/2022] [Indexed: 11/11/2022] Open
Abstract
Background The interactions between tumor cells and the host immune system play a crucial role in lung cancer progression and resistance to treatment. The alterations of EGFR signaling have the potential to produce an ineffective tumor-associated immune microenvironment by upregulating a series of immune suppressors, including inhibitory immune checkpoints, immunosuppressive cells, and cytokines. Elevated Heparin-binding EGF-like growth factor (HB-EGF) expression, one EGFR ligand correlated with higher histology grading, worse patient prognosis, and lower overall survival rate, acts as a chemotactic factor. However, the role of heparin-binding epidermal growth factor-like growth factor (HB-EGF) in the accumulation of immune cells in the tumor microenvironment remains unclear. Methods The clinical association of HB-EGF expression in lung cancer was examined using the Gene Expression Omnibus (GEO) repository. HB-EGF expression in different cell types was determined using single-cell RNA sequencing (scRNA-seq) dataset. The correlation between HB-EGF expression and cancer-immune infiltrated cells was investigated by performing TIMER and ClueGo pathways analysis from TCGA database. The chemotaxis of HB-EGF and macrophage infiltration was investigated using migration and immunohistochemical staining. Results The high HB-EGF expression was significantly correlated with poor overall survival in patients with lung adenocarcinoma (LUAD) but not lung squamous cell carcinoma (LUSC). Moreover, HB-EGF expression was correlated with the infiltration of monocytes, macrophages, neutrophils, and dendritic cells in LUAD but not in LUSC. Analysis of scRNA-seq data revealed high HB-EGF expression in lung cancer cells and myeloid cells. Results from the pathway analysis and cell-based experiment indicated that elevated HB-EGF expression was associated with the presence of macrophage and lung cancer cell migration. HB-EGF was highly expressed in tumors and correlated with M2 macrophage infiltration in LUAD. Conclusions HB-EGF is a potential prognostic marker and therapeutic target for lung cancer progression, particularly in LUAD.
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Affiliation(s)
- Nguyen Van Hiep
- International Ph.D. Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan,Oncology Center, Bai Chay Hospital, Quang Ninh, Ha Long, Vietnam,Department of Thoracic and Neurological Surgery, Bai Chay Hospital, Quang Ninh, Ha Long, Vietnam
| | - Wei-Lun Sun
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan,TMU Research Center for Thoracic Medicine, Taipei Medical University, Taipei, Taiwan
| | - Po-Hao Feng
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan,TMU Research Center for Thoracic Medicine, Taipei Medical University, Taipei, Taiwan
| | - Cheng-Wei Lin
- International Ph.D. Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan,TMU Research Center for Thoracic Medicine, Taipei Medical University, Taipei, Taiwan,Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Kuan-Yuan Chen
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan,TMU Research Center for Thoracic Medicine, Taipei Medical University, Taipei, Taiwan,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ching-Shan Luo
- International Ph.D. Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan,Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan,TMU Research Center for Thoracic Medicine, Taipei Medical University, Taipei, Taiwan
| | - Le Ngoc Dung
- Department of Thoracic and Neurological Surgery, Bai Chay Hospital, Quang Ninh, Ha Long, Vietnam
| | - Hoang Van Quyet
- Department of Thoracic and Neurological Surgery, Bai Chay Hospital, Quang Ninh, Ha Long, Vietnam
| | - Sheng-Ming Wu
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan,TMU Research Center for Thoracic Medicine, Taipei Medical University, Taipei, Taiwan,*Correspondence: Kang-Yun Lee, ; Sheng-Ming Wu,
| | - Kang-Yun Lee
- International Ph.D. Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan,Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan,TMU Research Center for Thoracic Medicine, Taipei Medical University, Taipei, Taiwan,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan,*Correspondence: Kang-Yun Lee, ; Sheng-Ming Wu,
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16
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Brockhoff G. "Shedding" light on HER4 signaling in normal and malignant breast tissues. Cell Signal 2022; 97:110401. [PMID: 35820544 DOI: 10.1016/j.cellsig.2022.110401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 12/25/2022]
Abstract
Receptor Tyrosine Kinases of the Epidermal Growth Factor Receptor Family play a pivotal role as drivers of carcinogenesis and uncontrolled cell growth for a variety of malignancies, not least for breast cancer. Besides the estrogen receptor, the HER2 receptor was and still is a representative marker for advanced taxonomic sub-differentiation of breast cancer and emerged as one of the first therapeutic targets for antibody based therapies. Since the approval of trastuzumab for the therapy of HER2-positive breast cancer in 1998 anti-HER2 treatment strategies are being modified, refined, and successfully combined with complementary treatments, nevertheless there is still potential for improvement. The HER2 relatives, namely HER1 (i.e., EGFR), HER3 and HER4 share a high degree of molecular homology and together form a functional unit for signal transmission. Under regular conditions, receptor coexpression patterns and receptor interaction represent key parameters for signaling robustness, which ensures cellular growth control and enables tissue differentiation. In addition, treatment efficiency of e.g., an anti-HER2 targeting is substantially determined by the expression pattern of HER receptors on target cells. Within the receptor family, the HER4 plays a particular role and is engaged in exceptional signaling activities. A favorable prognostic impact has been attributed to HER4 expression in breast cancer under specific molecular conditions. HER4-specific cellular effects are initially determined by a ligand-dependent or -independent receptor activation. Essential processes as cell growth and proliferation, cell differentiation, and apoptotic cell death can be initiated by this receptor. This review gives an overview of the role of HER4 in normal and malignant breast epithelial cells and tissues. Specific mechanism of HER4 activation and subsequent intracellular signaling will be described by taking a focus on effects provoked by receptor shedding. HER4 activities and specific effects will be correlated to breast cancer subtypes and the impact of HER4 on course and outcome of disease will be considered. Moreover, current and potential therapeutic approaches will be discussed.
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Affiliation(s)
- Gero Brockhoff
- Department of Gynecology and Obstetrics, University Medical Center Regensburg, Regensburg, Germany.
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17
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Wang W, Tan S, Yang Y, Zhou T, Xing D, Su B, Wang J, Li S, Shang M, Gao D, Dunham R, Liu Z. Feminization of channel catfish with 17β-oestradiol involves methylation and expression of a specific set of genes independent of the sex determination region. Epigenetics 2022; 17:1820-1837. [PMID: 35703353 DOI: 10.1080/15592294.2022.2086725] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Exogenous oestrogen 17β-oestradiol (E2) has been shown to effectively induce feminization in teleosts. However, the molecular mechanisms underlying the process remain unclear. Here, we determined global DNA methylation and gene expression profiles of channel catfish (Ictalurus punctatus) during early sex differentiation after E2 treatment. Overall, the levels of global DNA methylation after E2 treatment were not significantly different from those of controls. However, a specific set of genes were differentially methylated, which included many sex differentiation-related pathways, such as MARK signalling, adrenergic signalling, Wnt signalling, GnRH signalling, ErbB signalling, and ECM-receptor interactions. Many genes involved in these pathways were also differentially expressed after E2 treatment. Specifically, E2 treatments resulted in upregulation of female-related genes and downregulation of male-related genes in genetic males during sex reversal. However, E2-induced sex reversal did not cause sex-specific changes in methylation profiles or gene expression within the sex determination region (SDR) on chromosome 4, suggesting that E2-induced sex reversal was a downstream process independent of the sex determination process that was regulated by sex-specific methylation within the SDR.
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Affiliation(s)
- Wenwen Wang
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, USA
| | - Suxu Tan
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, USA
| | - Yujia Yang
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, USA
| | - Tao Zhou
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, USA.,Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - De Xing
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, USA
| | - Baofeng Su
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, USA
| | - Jinhai Wang
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, USA
| | - Shangjia Li
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, USA
| | - Mei Shang
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, USA
| | - Dongya Gao
- Department of Biology, College of Arts and Sciences, Syracuse University, Syracuse, NY, USA
| | - Rex Dunham
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, USA
| | - Zhanjiang Liu
- Department of Biology, College of Arts and Sciences, Syracuse University, Syracuse, NY, USA
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18
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Balogun TA, Ipinloju N, Abdullateef OT, Moses SI, Omoboyowa DA, James AC, Saibu OA, Akinyemi WF, Oni EA. Computational Evaluation of Bioactive Compounds from Colocasia affinis Schott as a Novel EGFR Inhibitor for Cancer Treatment. Cancer Inform 2021; 20:11769351211049244. [PMID: 34646061 PMCID: PMC8504293 DOI: 10.1177/11769351211049244] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/02/2021] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION Epidermal growth factor receptor (EGFR) is a transmembrane protein that belongs to the ErbB/HER-family of tyrosine kinase receptors. Somatic mutations and overexpression of EGFR have been reported to play a vital role in cancer cell development and progression, including cell proliferation, differentiation, angiogenesis, apoptosis, and metastatic spread. Hence, EGFR is an important therapeutic target for the treatment of various types of epithelial cancers. Somatic mutations have led to resistance to clinically approved synthetic EGFR inhibitors. Furthermore, synthetic EGFR inhibitors have been associated with several side effects. Thus, there is a need to develop novel EGFR inhibitors with an acceptable biosafety profile and high efficacy. METHODS Herein, we employed structural bioinformatics and theoretical chemistry techniques via molecular docking, molecular mechanics generalized Born surface area (MM-GBSA) calculation, density functional theory analysis (DFT), and pharmacokinetic study to identify novel EGFR inhibitors. RESULTS The stringent molecular docking and MM-GBSA calculations identified MET 793, LYS 745, PHE 723, ASP 855, ARG 411, and THR 854 as principal amino acid residues for EGFR-ligands interactions. Furthermore, Colocasia affinis Schott compounds exhibited higher binding energy and more stable interactions than the reference compound (gefitinib). DFT analysis also ascertains better bioactivity and chemical reactivity of C. affinis Schott with favorable intramolecular charge transfer between electron-donor and electron acceptor groups. The pharmacokinetic profile of C. affinis Schott bioactive compounds satisfies Lipinski's rule of five assessment. CONCLUSION Collectively, C. affinis Schott compounds demonstrated higher inhibitory potentials against EGFR and better pharmacological properties when compared with gefitinib. C. affinis Schott compounds are therefore suggested as promising therapeutic EGFR inhibitors for cancer treatment.
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Affiliation(s)
- Toheeb A Balogun
- Department of Biochemistry, Adekunle Ajasin University, Akungba-Akoko, Nigeria
| | - Nureni Ipinloju
- Department of Chemical Sciences, Adekunle Ajasin University, Akungba-Akoko, Nigeria
| | | | - Segun I Moses
- Department of Microbiology, Federal University of Technology Akure, Akure, Nigeria
| | | | - Akinwumi C James
- Department of Chemical Sciences, Adekunle Ajasin University, Akungba-Akoko, Nigeria
| | - Oluwatosin A Saibu
- Department of Environmental Toxicology, University of Duisburg-Essen, Duisburg, Germany
| | - Wumi F Akinyemi
- Department of Biochemistry, Adekunle Ajasin University, Akungba-Akoko, Nigeria
| | - Ebenezer A Oni
- Department of Biochemistry, Adekunle Ajasin University, Akungba-Akoko, Nigeria
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19
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Damiani I, Castiglioni S, Sochaj-Gregorczyk A, Bonacina F, Colombo I, Rusconi V, Otlewski J, Corsini A, Bellosta S. Purification and In Vitro Evaluation of an Anti-HER2 Affibody-Monomethyl Auristatin E Conjugate in HER2-Positive Cancer Cells. BIOLOGY 2021; 10:biology10080758. [PMID: 34439990 PMCID: PMC8389717 DOI: 10.3390/biology10080758] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/04/2021] [Accepted: 08/04/2021] [Indexed: 12/17/2022]
Abstract
Simple Summary Antibody-drug conjugates (ADCs) represent an innovative class of anticancer agents specifically aimed at targeting cancer cells, reducing damage to healthy tissues but showing some weaknesses. A promising approach for the development of high-affinity tumor targeting ADCs is the use of engineered protein drugs, such as affibody molecules. Our aim was to develop a more efficient purification method for the cytotoxic conjugate ZHER2:2891DCS-MMAE that targets human epidermal growth factor receptor 2 (HER2)-positive breast cancer cells. The conjugate is based on ZHER2:2891 affibody and a drug conjugation sequence (DCS), which allowed for site-specific conjugation of the cytotoxic auristatin E molecule (MMAE) to the affibody. We tested the in vitro efficacy of ZHER2:2891DCS-MMAE on several parameters, such as cell viability, proliferation, migration, and apoptosis. Our results confirmed that the cytotoxic conjugate efficiently interacts with high affinity with HER2 positive cancer cells, allowing the selective and specific delivery of the cytotoxic payload. Abstract A promising approach for the development of high-affinity tumor targeting ADCs is the use of engineered protein drugs, such as affibody molecules, which represent a valuable alternative to monoclonal antibodies (mAbs) in cancer-targeted therapy. We developed a method for a more efficient purification of the ZHER2:2891DCS affibody conjugated with the cytotoxic antimitotic agent auristatin E (MMAE), and its efficacy was tested in vitro on cell viability, proliferation, migration, and apoptosis. The effects of ZHER2:2891DCS-MMAE were compared with the clinically approved monoclonal antibody trastuzumab (Herceptin®). To demonstrate that ZHER2:2891DCS-MMAE can selectively target HER2 overexpressing tumor cells, we used three different cell lines: the human adenocarcinoma cell lines SK-BR-3 and ZR-75-1, both overexpressing HER2, and the triple-negative breast cancer cell line MDA-MB-231. MTT assay showed that ZHER2:2891DCS-MMAE induces a significant time-dependent toxic effect in SK-BR-3 cells. A 30% reduction of cell viability was already found after 10 min exposure at a concentration of 7 nM (IC50 of 80.2 nM). On the contrary, MDA-MB-231 cells, which express basal levels of HER2, were not affected by the conjugate. The cytotoxic effect of the ZHER2:2891DCS-MMAE was confirmed by measuring apoptosis by flow cytometry. In SK-BR-3 cells, increasing concentrations of conjugated affibody induced cell death starting from 10 min of treatment, with the strongest effect observed after 48 h. Overall, these results demonstrate that the ADC, formed by the anti-HER2 affibody conjugated to monomethyl auristatin E, efficiently interacts with high affinity with HER2 positive cancer cells in vitro, allowing the selective and specific delivery of the cytotoxic payload.
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Affiliation(s)
- Isabella Damiani
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (I.D.); (S.C.); (F.B.); (I.C.); (V.R.); (A.C.)
| | - Silvia Castiglioni
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (I.D.); (S.C.); (F.B.); (I.C.); (V.R.); (A.C.)
| | - Alicja Sochaj-Gregorczyk
- Microbiology Department, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30387 Krakow, Poland;
| | - Fabrizia Bonacina
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (I.D.); (S.C.); (F.B.); (I.C.); (V.R.); (A.C.)
| | - Irma Colombo
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (I.D.); (S.C.); (F.B.); (I.C.); (V.R.); (A.C.)
| | - Valentina Rusconi
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (I.D.); (S.C.); (F.B.); (I.C.); (V.R.); (A.C.)
| | - Jacek Otlewski
- Department of Protein Engineering, Faculty of Biotechnology, University of Wroclaw, 50137 Wroclaw, Poland;
| | - Alberto Corsini
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (I.D.); (S.C.); (F.B.); (I.C.); (V.R.); (A.C.)
- IRCCS MultiMedica, Sesto San Giovanni, 20099 Milan, Italy
| | - Stefano Bellosta
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (I.D.); (S.C.); (F.B.); (I.C.); (V.R.); (A.C.)
- Correspondence: ; Tel.: +39-0250318392
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20
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Sun P, Qu Y, Wang Y, Wang J, Wang X, Sheng J. Wighteone exhibits an antitumor effect against EGFR L858R/T790M mutation non-small cell lung cancer. J Cancer 2021; 12:3900-3908. [PMID: 34093797 PMCID: PMC8176237 DOI: 10.7150/jca.54574] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 04/22/2021] [Indexed: 01/29/2023] Open
Abstract
Non-small cell lung cancer (NSCLC) harboring activating EGFR mutations were initially treated by first-generation EGFR tyrosine kinase inhibitors (EGFR-TKIs), unfortunately, the efficacy of these drugs is limited, mostly frequent due to T790M mutation. Although osimertinib has been approved to treat patients with T790M-positive NSCLC, the majority of patients will develop C797S mutation and suffer diseases again. Therefore, more novel therapeutic strategies for T790M mutation-positive NSCLC are urgently required. We hypothesized that wighteone, a natural compound isolated from plant derivatives, has antitumor effects against NSCLC with T790M mutation. In this study, we created a Ba/F3 cell line harboring EGFR L858R/T790M mutation (Ba/F3 EGFR L858R/T790M cell line), and then used this cell line and a human NSCLC cell line with EGFR L858R/T790M mutation (NCI-H1975) to investigate the effects and mechanism of wighteone. The results showed that wighteone inhibited cell proliferation, suppressed EGFR signaling pathway, caused cell cycle redistribution and induced cell apoptosis. Our studies suggest that wighteone may provide a novel potential therapeutic strategy for NSCLC patients with T790M mutation.
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Affiliation(s)
- Peiyuan Sun
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan, China.,College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Yana Qu
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan, China.,College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Yuna Wang
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan, China.,College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Jing Wang
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan, China.,College of Science, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Xuanjun Wang
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan, China.,College of Science, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Jun Sheng
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan, China.,College of Science, Yunnan Agricultural University, Kunming, Yunnan, China.,State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming, Yunnan, China
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21
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Gao ST, Girma DD, Bionaz M, Ma L, Bu DP. Hepatic transcriptomic adaptation from prepartum to postpartum in dairy cows. J Dairy Sci 2020; 104:1053-1072. [PMID: 33189277 DOI: 10.3168/jds.2020-19101] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/31/2020] [Indexed: 12/25/2022]
Abstract
The transition from pregnancy to lactation is the most challenging period for high-producing dairy cows. The liver plays a key role in biological adaptation during the peripartum. Prior works have demonstrated that hepatic glucose synthesis, cholesterol metabolism, lipogenesis, and inflammatory response are increased or activated during the peripartum in dairy cows; however, those works were limited by a low number of animals used or by the use of microarray technology, or both. To overcome such limitations, an RNA sequencing analysis was performed on liver biopsies from 20 Holstein cows at 7 ± 5d before (Pre-P) and 16 ± 2d after calving (Post-P). We found 1,475 upregulated and 1,199 downregulated differently expressed genes (DEG) with a false discovery rate adjusted P-value < 0.01 between Pre-P and Post-P. Bioinformatic analysis revealed an activation of the metabolism, especially lipid, glucose, and amino acid metabolism, with increased importance of the mitochondria and a key role of several signaling pathways, chiefly peroxisome proliferators-activated receptor (PPAR) and adipocytokines signaling. Fatty acid oxidation and gluconeogenesis, with a likely increase in amino acid utilization to produce glucose, were among the most important functions revealed by the transcriptomic adaptation to lactation in the liver. Although gluconeogenesis was induced, data indicated decrease in expression of glucose transporters. The analysis also revealed high activation of cell proliferation but inhibition of xenobiotic metabolism, likely due to the liver response to inflammatory-like conditions. Co-expression network analysis disclosed a tight connection and coordination among genes driving biological processes associated with protein synthesis, energy and lipid metabolism, and cell proliferation. Our data confirmed the importance of metabolic adaptation to lipid and glucose metabolism in the liver of early Post-P cows, with a pivotal role of PPAR and adipocytokines.
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Affiliation(s)
- S T Gao
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - D D Girma
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - M Bionaz
- Department of Animal and Rangeland Sciences, Oregon State University, Corvallis 97331
| | - L Ma
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
| | - D P Bu
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
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22
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Gou Q, Zhang W, Xu Y, Jin J, Liu Q, Hou Y, Shi J. EGFR/PPARδ/HSP90 pathway mediates cancer cell metabolism and chemoresistance. J Cell Biochem 2020; 122:394-402. [PMID: 33164261 DOI: 10.1002/jcb.29868] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/04/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023]
Abstract
Epidermal growth factor receptor (EGFR) induces peroxisome-proliferator-activated receptor-δ (PPARδ)-Y108 phosphorylation, while it is unclear the effect of phosphorylation of PPARδ on cancer cell metabolism. Here we found that EGF treatment increased its protein stability by inhibiting its lysosomal dependent degradation, which was reduced by gefitinib (EGFR inhibitor) treatment. PPARδ-Y108 phosphorylation in response to EGF recruited HSP90 (heat shock protein 90) to PPARδ resulting in increased PPARδ stability. In addition, PPARδ-Y108 phosphorylation promoted cancer cell metabolism, proliferation, and chemoresistance. Therefore, this study revealed a novel molecular mechanism of EGFR/HSP90/PPARδ pathway-mediated cancer cell metabolism, proliferation, and chemoresistance, which provides a strategy for cancer treatment.
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Affiliation(s)
- Qian Gou
- Department of Oncology, The Affiliated Wujin Hospital, Jiangsu University, Changzhou, Jiangsu, China.,School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,School of Life Science, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Wenbo Zhang
- School of Life Science, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ying Xu
- School of Life Science, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jianhua Jin
- Department of Oncology, The Affiliated Wujin Hospital, Jiangsu University, Changzhou, Jiangsu, China.,Department of Oncology, The Wujin Clinical College of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Qian Liu
- Department of Oncology, The Affiliated Wujin Hospital, Jiangsu University, Changzhou, Jiangsu, China.,Department of Oncology, The Wujin Clinical College of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yongzhong Hou
- Department of Oncology, The Affiliated Wujin Hospital, Jiangsu University, Changzhou, Jiangsu, China.,School of Life Science, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Juanjuan Shi
- School of Life Science, Jiangsu University, Zhenjiang, Jiangsu, China
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Emerging role of phytochemicals in targeting predictive, prognostic, and diagnostic biomarkers of lung cancer. Food Chem Toxicol 2020; 144:111592. [PMID: 32702507 DOI: 10.1016/j.fct.2020.111592] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 07/03/2020] [Accepted: 07/07/2020] [Indexed: 02/07/2023]
Abstract
Lung-cancer is the foremost cause of cancer in humans worldwide, of which 80-85% cases are composed of non-small cell lung carcinoma. All treatment decisions depend on the pattern of biomarkers selection to enhance the response to the targeted therapies. Although advanced treatments are available for lung-cancer, the disease treatment remains not adequate. There are several synthetic chemotherapeutic agents available for the treatment of lung cancer. However, due to their toxic effect, survival rate is still 15-18%. Besides, medicinal plants are a huge reservoir of natural products that provide protective effects against lung cancer. Likewise, successful studies of potential phytochemicals in targeting lung-cancer biomarkers have created a novel paradigm for the discovery of potent drugs against lung-cancer. Hence, to defeat severe toxicity and resistance towards the synthetic drugs, detailed studies are required regarding the available phytochemicals and targets responsible for the treatment of lung-cancer. The present review provides a comprehensive information about the lung-cancer biomarkers under the classification of predictive, prognostic, and diagnostic type. Moreover, it discusses and enlists the phytochemicals with mode of action against different biomarkers, effective doses in in vitro, in vivo, and clinical studies, the limitations associated with usage of phytochemicals as a drug to prevent/cure lung-cancer and the latest techniques employed to overcome such issues.
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24
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Targeted next-generation sequencing of matched localized and metastatic primary high-risk SCCs identifies driver and co-occurring mutations and novel therapeutic targets. J Dermatol Sci 2020; 99:30-43. [PMID: 32595073 DOI: 10.1016/j.jdermsci.2020.05.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/01/2020] [Accepted: 05/12/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND Cutaneous squamous cell carcinoma (SCC) is the second most common type of skin cancer and is responsible for over one million cases annually. While only 3-5 % of SCCs metastasize, those that do are associated with significant morbidity and mortality. Using gene mutations to help predict metastasis and select therapeutics is still being explored. OBJECTIVE To present novel data from targeted sequencing of 20 case-matched localized and metastatic high-risk SCCs. METHODS A cancer-associated gene panel of 76 genes was run from formalin-fixed paraffin-embedded samples of 20 case-matched localized (10) and metastatic (10) high-risk SCCs (Vela Diagnostics). RESULTS Using spatial clustering analysis, primary driver mutations were identified asEGFR in localized SCC and CDH1 in metastatic SCC. ERBB4 and STK11 were found to be significant co-occurring mutations in localized SCC. Pathway analyses showed the RTK/RAS, TP53, TGF-b, NOTCH1, PI3K, and cell cycle pathways to be highly relevant in all high-risk SCCs with the Wnt pathway enhanced in metastatic SCC only. CONCLUSIONS This study compared gene mutations between localized and metastatic SCC with the intent of identifying key differences and new potential targeted treatment options. To our knowledge, the co-occurrence ofERBB4 and STK11 mutations has not been previously reported. Targeted inhibition of CDH1 and the Wnt pathway should be further explored in metastatic SCC.
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25
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PPARδ is a regulator of autophagy by its phosphorylation. Oncogene 2020; 39:4844-4853. [PMID: 32439863 DOI: 10.1038/s41388-020-1329-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/05/2020] [Accepted: 05/07/2020] [Indexed: 02/06/2023]
Abstract
In response to nutrient deficiency, autophagy degrades cytoplasmic materials and organelles in lysosomes, which is nutrient recycling, whereas activation of EGFR mediates autophagy suppression in response to growth factors. It is unclear whether PPARδ could be the regulator of autophagy in response to active EGFR. Here we found that EGFR induced PPARδ phosphorylation at tyrosine-108 leading to increased binding of LC3 to PPARδ by its LIR (LC3 interacting region) motif, consequently, inhibited autophagic flux. Conversely, EGFR inhibitor treatment reversed this event. Furthermore, EGFR-mediated PPARδ phosphorylation at tyrosine-108 led to autophagy inhibition and tumor growth. These findings suggest that PPARδ serves as a regulator of autophagy by its phosphorylation.
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26
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Abnormal Hypermethylation of CpG Dinucleotides in Promoter Regions of Matrix Metalloproteinases Genes in Breast Cancer and Its Relation to Epigenomic Subtypes and HER2 Overexpression. Biomedicines 2020; 8:biomedicines8050116. [PMID: 32397602 PMCID: PMC7277193 DOI: 10.3390/biomedicines8050116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/06/2020] [Accepted: 05/08/2020] [Indexed: 01/09/2023] Open
Abstract
Matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs) substantially contribute to the regulation of intercellular interactions and thereby play a role in maintaining the tissue structure and function. We examined methylation of a subset of 5'-cytosine-phosphate-guanine-3' (CpG) dinucleotides in promoter regions of the MMP2, MMP11, MMP14, MMP15, MMP16, MMP17, MMP21, MMP23B, MMP24, MMP25, MMP28, TIMP1, TIMP2, TIMP3, and TIMP4 genes by methylation-sensitive restriction enzyme digestion PCR. In our collection of 183 breast cancer samples, abnormal hypermethylation was observed for CpGs in MMP2, MMP23B, MMP24, MMP25, and MMP28 promoter regions. The non-methylated status of the examined CpGs in promoter regions of MMP2, MMP23B, MMP24, MMP25, and MMP28 in tumors was associated with low HER2 expression, while the group of samples with abnormal hypermethylation of at least two of these MMP genes was significantly enriched with HER2-positive tumors. Abnormal methylation of MMP24 and MMP25 was significantly associated with a CpG island hypermethylated breast cancer subtype discovered by genome-wide DNA bisulfite sequencing. Our results indicate that abnormal hypermethylation of at least several MMP genes promoters is a secondary event not directly functional in breast cancer (BC) pathogenesis. We suggest that it is elevated and/or ectopic expression, rather than methylation-driven silencing, that might link MMPs to tumorigenesis.
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Zou Z, Fan X, Liu Y, Sun Y, Zhang X, Sun G, Li X, Xu S. Endogenous thrombopoietin promotes non-small-cell lung carcinoma cell proliferation and migration by regulating EGFR signalling. J Cell Mol Med 2020; 24:6644-6657. [PMID: 32337844 PMCID: PMC7299695 DOI: 10.1111/jcmm.15314] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 04/05/2020] [Accepted: 04/08/2020] [Indexed: 12/12/2022] Open
Abstract
Thrombopoietin (TPO) is a haematopoietic cytokine mainly produced by the liver and kidneys, which stimulates the production and maturation of megakaryocytes. In the past decade, numerous studies have investigated the effects of TPO outside the haematopoietic system; however, the role of TPO in the progression of solid cancer, particularly lung cancer, has not been well studied. Exogenous TPO does not affect non-small-cell lung cancer (NSCLC) cells as these cells show no or extremely low TPO receptor expression; therefore, in this study, we focused on endogenous TPO produced by NSCLC cells. Immunohistochemical analysis of 150 paired NSCLC and adjacent normal tissues indicated that TPO was highly expressed in NSCLC tissues and correlated with clinicopathological parameters including differentiation, P-TNM stage, lymph node metastasis and tumour size. Suppressing endogenous TPO by small interfering RNA inhibited the proliferation and migration of NSCLC cells. Moreover, TPO interacted with the EGFR protein and delayed ligand-induced EGFR degradation, thus enhancing EGFR signalling. Notably, overexpressing TPO in EGF-stimulated NSCLC cells facilitated cell proliferation and migration, whereas no obvious changes were observed without EGF stimulation. Our results suggest that endogenous TPO promotes tumorigenicity of NSCLC via regulating EGFR signalling and thus could be a therapeutic target for treating NSCLC.
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Affiliation(s)
- Zifang Zou
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Xiaoxi Fan
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Yang Liu
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Yanbin Sun
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Xin Zhang
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Guanghao Sun
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Xuehao Li
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Shun Xu
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
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Kang H, Ma D, Zhang J, Zhao J, Yang M. MicroRNA-18a induces epithelial-mesenchymal transition like cancer stem cell phenotype via regulating RKIP pathway in pancreatic cancer. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:433. [PMID: 32395477 PMCID: PMC7210200 DOI: 10.21037/atm.2020.03.195] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Background Pancreatic cancer is a devastating invasive disease. Understanding the molecular mechanism of metastasis of this cancer is basis for its treatment and prevention. Methods Pancreatic cancer tissues and normal adjacent tissues were collected from patients tour hospital. Western blotting and a sphere growth and invasion assay were performed to conduct analysis. Pancreatic ductal adenocarcinoma cell Line PANC-1 were cultured. To test the level of Raf-1 kinase inhibitor protein (RKIP), immunofluorescence analyses were performed. Results In this study, we showed that expression of RKIP was downregulated in pancreatic cancer. RKIP can inhibit epithelial to mesenchymal transition (EMT) in PANC-1 cells. MicroRNA-181a (miR-181a) has a high expression in pancreatic cancer and can induce EMT phenotype by directly degrading RKIP in pancreatic cancer PANC-1 cells. Conclusions We concluded that miR-181a induces EMT phenotype through its regulation of RKIP in pancreatic cancer. MicroRNA-18a may be a novel target in the treatment of pancreatic cancer in future.
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Affiliation(s)
- Honggang Kang
- Department of Oncology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Dan Ma
- Department of Oncology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Jing Zhang
- Department of Oncology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Jun Zhao
- Department of Oncology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Mengxiang Yang
- Department of Oncology, Liaocheng People's Hospital, Liaocheng 252000, China
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Patel HM, Ahmad I, Pawara R, Shaikh M, Surana S. In silico search of triple mutant T790M/C797S allosteric inhibitors to conquer acquired resistance problem in non-small cell lung cancer (NSCLC): a combined approach of structure-based virtual screening and molecular dynamics simulation. J Biomol Struct Dyn 2020; 39:1491-1505. [PMID: 32102624 DOI: 10.1080/07391102.2020.1734092] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Third generation EGFR inhibitor osimertinib was approved as the first-line treatment for EGFR T790M mutation-positive Non-Small Cell Lung Cancer (NSCLC) patients in 2017. However, EGFR tertiary Cys797 to Ser797 (C797S) point mutation emanate rapidly after treatment of osimertinib, which is undruggable mutation to the all existing drugs. Recently, EAI045 fourth-generation allosteric EGFR inhibitor has been reported, which binds away from the ATP-binding site and not rely on Cys 797 binding. Here, we are reporting compound ZINC20531199 by virtual based screening studies as allosteric inhibitor to overcome the EGFR T790M/C797S Tyrosine Kinase (TK) mutation problem. Molecular Dynamics simulation for 10 ns further suggested that docked compound ZINC20531199 was stable into the allosteric pocket of the C797S EGFR tyrosine kinase. In silico pharmacokinetic predictions of the virtually screened compounds are within the defined range described for human use. Results indicate that the virtual screened compounds could be potential leads for the further development of new allosteric EGFR T790M/C797S inhibitors to overcome the problem of drug resistance.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Harun M Patel
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India
| | - Iqrar Ahmad
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India
| | - Rahul Pawara
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India
| | - Matin Shaikh
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India
| | - Sanjay Surana
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India
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Duan X, Wu Y, Zhang Z, Lu Z. Identification and analysis of dysregulated lncRNA and associated ceRNA in the pathogenesis of keloid. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:222. [PMID: 32309369 PMCID: PMC7154391 DOI: 10.21037/atm.2020.01.07] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Background Keloid is an excessive fibrosis disease caused by the abnormal proliferation of collagen fibers following trauma. Previous studies have shown that genetic factors have been considered to play important roles in keloid formation. This study is aimed to investigate the regulatory network of messenger RNAs (mRNAs) microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) in keloid, and identifying its key biomarkers. Methods We performed RNA-seq and miRNA-seq on keloid and normal skin samples. Sequencing datasets were analyzed by bioinformatics. Gene ontology (GO) and pathway analysis presented the characteristics of associated protein-coding genes. Differentially expressed ceRNAs were validated by quantitative reverse transcriptase-PCR (qRT-PCR). Results We identified a total of 319 lncRNAs, 1,533 mRNAs and 40 miRNAs as keloid-specific RNAs. Both the GO biological processes and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were analyzed for 1,219 specific genes with differentially expressed mRNAs. Then, with 509 key lncRNAs, 25 miRNAs, and 94 mRNAs, we constructed a ceRNA network and explored any potential underlying mechanisms. In the regulation of the actin cytokeleton pathway, we validated 2 pairs of ceRNAs EGFR/miR-370-3p/lnc-GLB1L-1 and ITGB5/ miR-204/ lnc-CASP9-3 in another sample size in keloid. Conclusions Through RNA-seq and miRNA-seq, we identified keloid-associated lncRNAs, mRNAs and miRNAs, which can be used as potential therapeutic targets and biomarkers for keloid. Our study may lay a foundation for future pathogenesis studies.
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Affiliation(s)
- Xilei Duan
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Yuemeng Wu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Zheng Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Zhong Lu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai 200040, China
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Veloso ES, Gonçalves INN, Silveira TL, Oliveira FS, Vieira DS, Cassali GD, Del Puerto HL, Ferreira E. Diverse roles of epidermal growth factors receptors in oral and cutaneous canine melanomas. BMC Vet Res 2020; 16:24. [PMID: 31996230 PMCID: PMC6988198 DOI: 10.1186/s12917-020-2249-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 01/20/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The epidermal growth factor receptors participate in the physiological processes such as regulation of morphogenesis, proliferation and cell migration, but when overexpressed or overactivated they may play an important role in neoplastic progression. Melanoma is the most aggressive skin neoplasm and is characterized by elevated invasion and low survival rates in both humans and dogs. In human melanomas the overexpression of EGFR, HER3 or HER4 is associated with poor prognosis. In canine melanomas the epidermal growth factor receptors expression has not been evaluated. Therefore, this study evaluated the expression of epidermal growth factor receptors by immunohistochemistry and investigated their relationship with morphological characteristics and proliferative indices in cutaneous and oral canine melanoma. RESULTS In cutaneous melanoma an increased proliferative index was associated with increased cytoplasmic HER4 and reduced EGFR and HER3 protein expression. In oral melanomas, membranous HER2 protein expression correlated with occurrence of emboli, but ERBB2 gene amplification wasn't observed. CONCLUSION Thus, our work evidenced the relationship between HER4 and the stimulus to cell proliferation in cutaneous melanomas, in addition to the relationship between HER2 and the occurrence of emboli in oral melanomas.
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Affiliation(s)
- Emerson Soares Veloso
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG Brazil
| | - Ivy Nayra Nascimento Gonçalves
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG Brazil
| | - Tatiany Luiza Silveira
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG Brazil
| | - Fernando Soares Oliveira
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG Brazil
| | - Déborah Soares Vieira
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG Brazil
| | - Geovanni Dantas Cassali
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG Brazil
| | - Helen Lima Del Puerto
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG Brazil
| | - Enio Ferreira
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG Brazil
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Georges GJ, Dengl S, Bujotzek A, Hesse F, Fischer JA, Gärtner A, Benz J, Lauer ME, Ringler P, Stahlberg H, Plath F, Brinkmann U, Imhof-Jung S. The Contorsbody, an antibody format for agonism: Design, structure, and function. Comput Struct Biotechnol J 2020; 18:1210-1220. [PMID: 32542107 PMCID: PMC7283085 DOI: 10.1016/j.csbj.2020.05.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/28/2020] [Accepted: 05/06/2020] [Indexed: 12/26/2022] Open
Abstract
The careful design of the antibody architecture is becoming more and more important, especially when the purpose is agonism. We present the design of a novel antibody format that is able to promote receptor dimerization and induce signal transduction resulting in cell proliferation. Mono-specific bivalent Y-shape IgGs made of two light chains and two heavy chains are engineered into single chain dimers of two modified heavy chains, resulting in the fixation of the two Fab fragments along the Fc dimerizing moiety. By this, an antagonist of the Her-receptor family, Trastuzumab, is re-formatted into an agonist by simply incorporating the original binding motif into a different geometrically and sterically constrained conformation. This novel format, named Contorsbody, retains antigen binding properties of the parental IgGs and can be produced by standard technologies established for recombinant IgGs. Structural analyses using molecular dynamics and electron microscopy are described to guide the initial design and to confirm the Contorsbody as a very compact molecule, respectively. Contorsbodies show increased rigidity compared to IgGs and their Fab moieties are positioned parallel and adjacent to each other. This geometry has an increased potential to trigger cell surface antigen or receptor ‘cis’-dimerization without ‘trans’-bridging of cells or mere receptor blockade.
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Affiliation(s)
- Guy J. Georges
- Roche Pharmaceutical Research and Early Development, Large Molecule Research, Roche Innovation Center Munich, Nonnenwald 2, 82377 Penzberg, Germany
- Corresponding author.
| | - Stefan Dengl
- Roche Pharmaceutical Research and Early Development, Large Molecule Research, Roche Innovation Center Munich, Nonnenwald 2, 82377 Penzberg, Germany
| | - Alexander Bujotzek
- Roche Pharmaceutical Research and Early Development, Large Molecule Research, Roche Innovation Center Munich, Nonnenwald 2, 82377 Penzberg, Germany
| | - Friederike Hesse
- Roche Pharmaceutical Research and Early Development, Large Molecule Research, Roche Innovation Center Munich, Nonnenwald 2, 82377 Penzberg, Germany
| | - Jens A.A. Fischer
- Roche Pharmaceutical Research and Early Development, Large Molecule Research, Roche Innovation Center Munich, Nonnenwald 2, 82377 Penzberg, Germany
| | - Achim Gärtner
- Roche Pharmaceutical Research and Early Development, Large Molecule Research, Roche Innovation Center Munich, Nonnenwald 2, 82377 Penzberg, Germany
| | - Jörg Benz
- Roche Pharmaceutical Research and Early Development, Chemical Biology, Roche Innovation Center, Basel, Switzerland
| | - Matthias E. Lauer
- Roche Pharmaceutical Research and Early Development, Chemical Biology, Roche Innovation Center, Basel, Switzerland
| | - Philippe Ringler
- C-CINA, Center for Celullar Imaging and Nano Analytics, University of Basel, Switzerland
| | - Henning Stahlberg
- C-CINA, Center for Celullar Imaging and Nano Analytics, University of Basel, Switzerland
| | - Friederike Plath
- Roche Pharmaceutical Research and Early Development, Pharma Technical Development, Roche Innovation Center, Basel, Switzerland
| | - Ulrich Brinkmann
- Roche Pharmaceutical Research and Early Development, Large Molecule Research, Roche Innovation Center Munich, Nonnenwald 2, 82377 Penzberg, Germany
| | - Sabine Imhof-Jung
- Roche Pharmaceutical Research and Early Development, Large Molecule Research, Roche Innovation Center Munich, Nonnenwald 2, 82377 Penzberg, Germany
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Fazio N, Cella CA, Del Re M, Laffi A, Rubino M, Zagami P, Spada F. Pharmacodynamics, clinical findings and approval status of current and emerging tyrosine-kinase inhibitors for pancreatic neuroendocrine tumors. Expert Opin Drug Metab Toxicol 2019; 15:993-1004. [PMID: 31794273 DOI: 10.1080/17425255.2019.1700951] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Introduction: Pancreatic neuroendocrine tumors (panNETs) represent a rare group of malignancies. For decades, chemotherapy, somatostatin analogs and interferon represented the only systemic therapies; however, over the latest years, new options were registered, including Everolimus, Sunitinib (SUN), and Peptide Receptor Radionuclide Therapy.Areas covered: This review discusses the role of tyrosine kinase inhibitors (TKIs) in advanced panNETs.Expert opinion: TKIs showed an antiangiogenic and antiproliferative impact on advanced panNETs. Sunitinib is the only TKI currently available in clinical practice, having been approved on the basis of relevant results of a specific panNET phase III trial. New TKIs, such as Cabozantinib, Lenvatinib, Pazopanib, Surufatinib are still on investigation in panNETs. Although some phase II studies with the new TKIs yielded better PFS and RR compared with SUN, different study designs and tumor populations may have induced selection biases. However, it was reported that panNETs resistant to SUN could respond to a new TKI, indicating a possible further therapeutic line in this context. The global investigation plan of TKIs in panNETs is not homogeneous and it is difficult to understand what kind of development this can have in the near future for clinical practice.
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Affiliation(s)
- Nicola Fazio
- Division of Gastrointestinal Medical Oncology and Neuroendocrine Tumors, European Institute of Oncology, IEO, IRCCS, Milan, Italy
| | - Chiara A Cella
- Division of Gastrointestinal Medical Oncology and Neuroendocrine Tumors, European Institute of Oncology, IEO, IRCCS, Milan, Italy
| | - Marzia Del Re
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Pisa, Italy
| | - Alice Laffi
- Division of Gastrointestinal Medical Oncology and Neuroendocrine Tumors, European Institute of Oncology, IEO, IRCCS, Milan, Italy
| | - Manila Rubino
- Division of Gastrointestinal Medical Oncology and Neuroendocrine Tumors, European Institute of Oncology, IEO, IRCCS, Milan, Italy
| | - Paola Zagami
- Division of Gastrointestinal Medical Oncology and Neuroendocrine Tumors, European Institute of Oncology, IEO, IRCCS, Milan, Italy
| | - Francesca Spada
- Division of Gastrointestinal Medical Oncology and Neuroendocrine Tumors, European Institute of Oncology, IEO, IRCCS, Milan, Italy
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Huang Z, Wang SL, Chen H, Shen RK, Li XD, Huang QS, Wu CY, Weng DF, Lin JH. Clinicopathological and prognostic values of ErbB receptor family amplification in primary osteosarcoma. Scandinavian Journal of Clinical and Laboratory Investigation 2019; 79:601-612. [PMID: 31663373 DOI: 10.1080/00365513.2019.1683764] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Osteosarcoma is a malignant bone tumor with extremely high invasion, metastasis and mortality. The prognosis of patients with osteosarcoma remains poor. The ErbB receptor family was found to be overexpressed in human cancers and associated with poor prognosis. However, the role of ErbB receptor family in osteosarcoma has not been fully understood. The present study aimed to investigate the clinicopathological and prognostic significances of ErbB receptors in primary osteosarcoma. Western blot (WB), reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and fluorescence in situ hybridization (FISH) were used to detect the protein and gene expression of ErbB receptors in 60 primary osteosarcoma specimens and 30 non-neoplastic bone tissues. WB and RT-qPCR analyses showed that the protein and mRNA expression levels of EGFR, ErbB3 and ErbB4 in osteosarcoma specimens were significantly higher than those in non-neoplastic bone tissues. Seventeen (28.33%), 15 (25.00%) and 15 (25.00%) osteosarcoma specimens presented with amplification of EGFR, ErbB3 and ErbB4 gene, respectively, which were significantly higher compared with non-neoplastic bone tissues. The amplification of ErbB3 and ErbB4 in osteosarcoma was associated with advanced surgical stage. The amplification of EGFR, ErbB3, ErbB4 and the co-amplification of EGFR-ErbB3, EGFR-ErbB4, ErbB3-ErbB4 was linked with poor response to chemotherapy and distant metastasis. The amplification of EGFR, ErbB3 and ErbB4, as well as their co-amplification demonstrated independent prognostic values for reduced survival time of osteosarcoma patients and may serve as potential therapeutic targets for osteosarcoma patients in the future.
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Affiliation(s)
- Zhen Huang
- Department of Orthopedics, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China
| | - Sheng-Lin Wang
- Department of Orthopedics, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China
| | - Hui Chen
- Department of Nephrology, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China
| | - Rong-Kai Shen
- Department of Orthopedics, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China
| | - Xiao-Dong Li
- Department of Orthopedics, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China
| | - Qing-Shan Huang
- Department of Orthopedics, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China
| | - Chao-Yang Wu
- Department of Orthopedics, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China
| | - Dan-Feng Weng
- Department of Pathology, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China
| | - Jian-Hua Lin
- Department of Orthopedics, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China.,Fujian Provincial Institute of Orthopedics, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China
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Wang J, Sun P, Wang Q, Zhang P, Wang Y, Zi C, Wang X, Sheng J. (-)-Epigallocatechin-3-gallate derivatives combined with cisplatin exhibit synergistic inhibitory effects on non-small-cell lung cancer cells. Cancer Cell Int 2019; 19:266. [PMID: 31636509 PMCID: PMC6791019 DOI: 10.1186/s12935-019-0981-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 09/27/2019] [Indexed: 01/04/2023] Open
Abstract
Background Non-small-cell lung cancer (NSCLC) is the leading cause of cancer-related death worldwide. The inhibition of epidermal growth factor receptor (EGFR) signaling by tyrosine kinase inhibitors or monoclonal antibodies plays a key role in NSCLC treatment. Unfortunately, these treatment strategies are limited by eventual resistance and cell lines with differential EGFR status. Therefore, new therapeutic strategies for NSCLC are urgently required. Methods To improve the stability and absorption of (−)-epigallocatechin-3-gallate (EGCG), we synthesized a series of EGCG derivatives. The antitumor activities of EGCG derivatives with or without cisplatin were investigated in vitro and vivo. Cell proliferation, cell cycle distribution and apoptosis were measured in NSCLC cell lines and in vivo in a NCI-H441 xenograft model. Results We found that the EGCG derivatives inhibited cell viability and colony formation, caused cell cycle redistribution, and induced apoptosis. More importantly, the combination of the EGCG derivative and cisplatin led to increased growth inhibition, caused cell cycle redistribution, and enhanced the apoptosis rate compared to either compound alone. Consistent with the experiments in vitro, EGCG derivatives plus cisplatin significantly reduced tumor growth. Conclusions The combination treatment was found to inhibit the EGFR signaling pathway and decrease the expression of p-EGFR, p-AKT, and p-ERK in vitro and vivo. Our results suggest that compound 3 is a novel potential compound for NSCLC patients.
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Affiliation(s)
- Jing Wang
- 1Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan China.,2College of Science, Yunnan Agricultural University, Kunming, 650201 Yunnan China.,3College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan China
| | - Peiyuan Sun
- 1Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan China.,3College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan China
| | - Qi Wang
- 1Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan China
| | - Pan Zhang
- 1Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan China
| | - Yuna Wang
- 1Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan China.,3College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan China
| | - Chengting Zi
- 1Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan China.,2College of Science, Yunnan Agricultural University, Kunming, 650201 Yunnan China
| | - Xuanjun Wang
- 1Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan China.,2College of Science, Yunnan Agricultural University, Kunming, 650201 Yunnan China.,State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming, Yunnan China
| | - Jun Sheng
- 1Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, Yunnan China.,2College of Science, Yunnan Agricultural University, Kunming, 650201 Yunnan China.,State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming, Yunnan China
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36
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Paul MD, Hristova K. The transition model of RTK activation: A quantitative framework for understanding RTK signaling and RTK modulator activity. Cytokine Growth Factor Rev 2019; 49:23-31. [PMID: 31711797 PMCID: PMC6898792 DOI: 10.1016/j.cytogfr.2019.10.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 10/10/2019] [Indexed: 01/15/2023]
Abstract
Here, we discuss the transition model of receptor tyrosine kinase (RTK) activation, which is derived from biophysical investigations of RTK interactions and signaling. The model postulates that (1) RTKs can interact laterally to form dimers even in the absence of ligand, (2) different unliganded RTK dimers have different stabilities, (3) ligand binding stabilizes the RTK dimers, and (4) ligand binding causes structural changes in the RTK dimer. The model is grounded in the principles of physical chemistry and provides a framework to understand RTK activity and to make predictions in quantitative terms. It can guide basic research aimed at uncovering the mechanism of RTK activation and, in the long run, can empower the search for modulators of RTK function.
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Affiliation(s)
- Michael D Paul
- Department of Materials Science and Engineering, Institute for NanoBioTechnology, and Program in Molecular Biophysics, Johns Hopkins University, Baltimore, MD, 21218, United States
| | - Kalina Hristova
- Department of Materials Science and Engineering, Institute for NanoBioTechnology, and Program in Molecular Biophysics, Johns Hopkins University, Baltimore, MD, 21218, United States.
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EGF Receptor Stalls upon Activation as Evidenced by Complementary Fluorescence Correlation Spectroscopy and Fluorescence Recovery after Photobleaching Measurements. Int J Mol Sci 2019; 20:ijms20133370. [PMID: 31323980 PMCID: PMC6650801 DOI: 10.3390/ijms20133370] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 07/04/2019] [Accepted: 07/05/2019] [Indexed: 12/28/2022] Open
Abstract
To elucidate the molecular details of the activation-associated clustering of epidermal growth factor receptors (EGFRs), the time course of the mobility and aggregation states of eGFP tagged EGFR in the membranes of Chinese hamster ovary (CHO) cells was assessed by in situ mobility assays. Fluorescence correlation spectroscopy (FCS) was used to probe molecular movements of small ensembles of molecules over short distances and time scales, and to report on the state of aggregation. The diffusion of larger ensembles of molecules over longer distances (and time scales) was investigated by fluorescence recovery after photobleaching (FRAP). Autocorrelation functions could be best fitted by a two-component diffusion model corrected for triplet formation and blinking. The slow, 100–1000 ms component was attributed to membrane localized receptors moving with free Brownian diffusion, whereas the fast, ms component was assigned to cytosolic receptors or their fragments. Upon stimulation with 50 nM EGF, a significant decrease from 0.11 to 0.07 μm2/s in the diffusion coefficient of membrane-localized receptors was observed, followed by recovery to the original value in ~20 min. In contrast, the apparent brightness of diffusing species remained the same. Stripe FRAP experiments yielded a decrease in long-range molecular mobility directly after stimulation, evidenced by an increase in the recovery time of the slow component from 13 to 21.9 s. Our observations are best explained by the transient attachment of ligand-bound EGFRs to immobile or slowly moving structures such as the cytoskeleton or large, previously photobleached receptor aggregates.
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38
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Backus KM, Cao J, Maddox SM. Opportunities and challenges for the development of covalent chemical immunomodulators. Bioorg Med Chem 2019; 27:3421-3439. [PMID: 31204229 DOI: 10.1016/j.bmc.2019.05.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 05/24/2019] [Accepted: 05/31/2019] [Indexed: 02/06/2023]
Abstract
Compounds that react irreversibly with cysteines have reemerged as potent and selective tools for altering protein function, serving as chemical probes and even clinically approved drugs. The exquisite sensitivity of human immune cell signaling pathways to oxidative stress indicates the likely, yet still underexploited, general utility of covalent probes for selective chemical immunomodulation. Here, we provide an overview of immunomodulatory cysteines, including identification of electrophilic compounds available to label these residues. We focus our discussion on three protein classes essential for cell signaling, which span the 'druggability' spectrum from amenable to chemical probes (kinases), somewhat druggable (proteases), to inaccessible (phosphatases). Using existing inhibitors as a guide, we identify general strategies to guide the development of covalent probes for selected undruggable classes of proteins and propose the application of such compounds to alter immune cell functions.
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Affiliation(s)
- Keriann M Backus
- Departments of Biological Chemistry and Chemistry and Biochemistry, University of California Los Angeles, USA.
| | - Jian Cao
- Departments of Biological Chemistry and Chemistry and Biochemistry, University of California Los Angeles, USA
| | - Sean M Maddox
- Departments of Biological Chemistry and Chemistry and Biochemistry, University of California Los Angeles, USA
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Synthesis and stability test of radiogadolinium(III)-DOTA-PAMAM G3.0-trastuzumab as SPECT-MRI molecular imaging agent for diagnosis of HER-2 positive breast cancer. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1016/j.jrras.2014.12.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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40
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Veloso ES, Gonçalves INN, Arantes JA, de Abreu RVS, Cassali GD, Ferreira E. Quantification of EGFR family in canine mammary ductal carcinomas in situ: implications on the histological graduation. Vet Res Commun 2019; 43:123-129. [PMID: 31020460 DOI: 10.1007/s11259-019-09752-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 04/05/2019] [Indexed: 11/28/2022]
Abstract
The epithelial growth factor receptors are transmembrane proteins with an important role in the neoplastic progression of tumors, and in this context, DCIS is an important phase in the progression of canine mammary tumors. Studies on the molecular profile and its relationship to a progression of canine mammary tumors are important to improve the treatment of patients and for a better understanding of canine mammary carcinogenesis. The aim of this study was to determine, by immunohistochemistry, the relation between the expression of EGFR, ErbB-2, ErbB-3, and ErbB-4 in 52 canine mammary gland DCIS with high and low histological grade. A positive correlation between histological grade and expression of membrane ErbB-2 and cytoplasmic ErbB-4 was observed. Increased ErbB-4 membrane expression was correlated with increased ErbB-3 expression in low and high-grade DCIS. Our data suggest that increased expression of ErbB-2 and ErbB-4 may be related to more aggressive DCIS and probabily involved with canine mammary neoplastic progression.
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Affiliation(s)
- Emerson Soares Veloso
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Ivy Nayra Nascimento Gonçalves
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Jaqueline Amorim Arantes
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Rafael Vitor Santos de Abreu
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Geovanni Dantas Cassali
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Enio Ferreira
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil.
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Yee PS, Zainal NS, Gan CP, Lee BKB, Mun KS, Abraham MT, Ismail SM, Abdul Rahman ZA, Patel V, Cheong SC. Synergistic Growth Inhibition by Afatinib and Trametinib in Preclinical Oral Squamous Cell Carcinoma Models. Target Oncol 2019; 14:223-235. [DOI: 10.1007/s11523-019-00626-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Zhang M, Sun H, Deng Y, Su M, Wei S, Wang P, Yu L, Liu J, Guo J, Wang X, Han X, He Q, Shen L. COPI-Mediated Nuclear Translocation of EGFRvIII Promotes STAT3 Phosphorylation and PKM2 Nuclear Localization. Int J Biol Sci 2019; 15:114-126. [PMID: 30662352 PMCID: PMC6329918 DOI: 10.7150/ijbs.28679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 09/26/2018] [Indexed: 12/17/2022] Open
Abstract
As a non-ligand-dependent activation protein, EGFRvIII is the most common mutant of EGFR, and its existence or especially its nuclear translocation in tumors can exacerbate the malignancy. Compared with the nuclear translocation of EGFR, which has been studied extensively, the specific mechanism by which EGFRvIII undergoes nuclear translocation has not yet been reported. Here, we found that EGFRvIII eventually reached the nucleus with the involvement of the Golgi and endoplasmic reticulum (ER) in glioma cells. In this process, syntaxin-6 was responsible for the identification and transport of EGFRvIII on Golgi. We also demonstrated that COPI mediated the reverse transport of EGFRvIII from the Golgi to ER, which process was also important for EGFRvIII's nuclear accumulation. EGFRvIII's nuclear translocation can significantly promote STAT3 phosphorylation and PKM2 nuclear localization. Finally, we showed that EGFRvIII's nuclear translocation obviously induced the growth of gliomas in an intracranial xenotransplantation experiment. These data suggested that searching methods that inhibit EGFRvIII entry into the nucleus will be effective glioma treatments.
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Affiliation(s)
- Mingzhi Zhang
- Department of Cell Biology, Stem Cell Research Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, People's Republic of China
| | - Haojie Sun
- Neuroscience Research Institute, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, People's Republic of China
| | - Yue Deng
- Beijing Cellonis Biotechnologies Co. Ltd, Zhongguancun Bio-Medicine Park, Beijing, People's Republic of China
| | - Ming Su
- Department of Cell Biology, Stem Cell Research Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, People's Republic of China
| | - Shiruo Wei
- Department of Cell Biology, Stem Cell Research Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, People's Republic of China
| | - Peipei Wang
- Beijing Cellonis Biotechnologies Co. Ltd, Zhongguancun Bio-Medicine Park, Beijing, People's Republic of China
| | - Lanlan Yu
- Beijing DongFang YaMei Gene Science and Technology Research Institute, Beijing, People's Republic of China
| | - Jinwen Liu
- Beijing DongFang YaMei Gene Science and Technology Research Institute, Beijing, People's Republic of China
| | - Jinhai Guo
- Beijing DongFang YaMei Gene Science and Technology Research Institute, Beijing, People's Republic of China
| | - Xuan Wang
- Research Center of Artificial Organ and Tissue Engineering, Second Department of Hepatobiliary Surgery, ZhuJiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, People's Republic of China
| | - Xu Han
- Research Center of Artificial Organ and Tissue Engineering, Second Department of Hepatobiliary Surgery, ZhuJiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, People's Republic of China
| | - Qihua He
- Medical and Health Analytical Center, Peking University Health Science Center, People's Republic of China
| | - Li Shen
- Department of Cell Biology, Stem Cell Research Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, People's Republic of China
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Bonello M, Sims AH, Langdon SP. Human epidermal growth factor receptor targeted inhibitors for the treatment of ovarian cancer. Cancer Biol Med 2018; 15:375-388. [PMID: 30766749 PMCID: PMC6372909 DOI: 10.20892/j.issn.2095-3941.2018.0062] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 10/26/2018] [Indexed: 12/24/2022] Open
Abstract
Ovarian cancer is the second most lethal gynecological cancer worldwide and while most patients respond to initial therapy, they often relapse with resistant disease. Human epidermal growth factor receptors (especially HER1/EGFR and HER2/ERBB2) are involved in disease progression; hence, strategies to inhibit their action could prove advantageous in ovarian cancer patients, especially in patients resistant to first line therapy. Monoclonal antibodies and tyrosine kinase inhibitors are two classes of drugs that act on these receptors. They have demonstrated valuable antitumor activity in multiple cancers and their possible use in ovarian cancer continues to be studied. In this review, we discuss the human epidermal growth factor receptor family; review emerging clinical studies on monoclonal antibodies and tyrosine kinase inhibitors targeting these receptors in ovarian cancer patients; and propose future research possibilities in this area.
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Affiliation(s)
- Maria Bonello
- Cancer Research UK Edinburgh Center and Division of Pathology Laboratory, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU, UK
| | - Andrew Harvey Sims
- Cancer Research UK Edinburgh Center and Division of Pathology Laboratory, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU, UK
| | - Simon Peter Langdon
- Cancer Research UK Edinburgh Center and Division of Pathology Laboratory, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU, UK
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Yu G, Wang W, Wang X, Xu M, Zhang L, Ding L, Guo R, Shi Y. Network pharmacology-based strategy to investigate pharmacological mechanisms of Zuojinwan for treatment of gastritis. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:292. [PMID: 30382864 PMCID: PMC6211468 DOI: 10.1186/s12906-018-2356-9] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 10/18/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND Zuojinwan (ZJW), a classic herbal formula, has been extensively used to treat gastric symptoms in clinical practice in China for centuries. However, the pharmacological mechanisms of ZJW still remain vague to date. METHODS In the present work, a network pharmacology-based strategy was proposed to elucidate its underlying multi-component, multi-target, and multi-pathway mode of action against gastritis. First we collected putative targets of ZJW based on TCMSP and STITCH databases, and a network containing the interactions between the putative targets of ZJW and known therapeutic targets of gastritis was built. Then four topological parameters, "degree", "betweenness", "closeness", and "coreness" were calculated to identify the major targets in the network. Furthermore, the major hubs were imported to the Metacore database to perform a pathway enrichment analysis. RESULTS A total of 118 nodes including 59 putative targets of ZJW were picked out as major hubs in terms of their topological importance. The results of pathway enrichment analysis indicated that putative targets of ZJW mostly participated in various pathways associated with anti-inflammation response, growth and development promotion and G-protein-coupled receptor signaling. More importantly, five putative targets of ZJW (EGFR, IL-6, IL-1β, TNF-α and MCP-1) and two known therapeutic targets of gastritis (CCKBR and IL-12β) and a link target NF-κB were recognized as active factors involved in the main biological functions of treatment, implying the underlying mechanisms of ZJW acting on gastritis. CONCLUSION ZJW could alleviate gastritis through the molecular mechanisms predicted by network pharmacology, and this research demonstrates that the network pharmacology approach can be an effective tool to reveal the mechanisms of traditional Chinese medicine (TCM) from a holistic perspective.
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Affiliation(s)
- Guohua Yu
- School of Life Sciences, Beijing University of Chinese Medicine, No.11 East road, North 3rd Ring Road, Beijing, 100029 China
| | - Wubin Wang
- School of Life Sciences, Beijing University of Chinese Medicine, No.11 East road, North 3rd Ring Road, Beijing, 100029 China
| | - Xu Wang
- School of Life Sciences, Beijing University of Chinese Medicine, No.11 East road, North 3rd Ring Road, Beijing, 100029 China
| | - Meng Xu
- School of Life Sciences, Beijing University of Chinese Medicine, No.11 East road, North 3rd Ring Road, Beijing, 100029 China
| | - Lili Zhang
- School of Life Sciences, Beijing University of Chinese Medicine, No.11 East road, North 3rd Ring Road, Beijing, 100029 China
| | - Lei Ding
- School of Life Sciences, Beijing University of Chinese Medicine, No.11 East road, North 3rd Ring Road, Beijing, 100029 China
| | - Rui Guo
- School of Life Sciences, Beijing University of Chinese Medicine, No.11 East road, North 3rd Ring Road, Beijing, 100029 China
| | - Yuanyuan Shi
- School of Life Sciences, Beijing University of Chinese Medicine, No.11 East road, North 3rd Ring Road, Beijing, 100029 China
- Shenzhen Hospital, Beijing University of Chinese Medicine, No. 1 Dayun road, Sports New City Road, Shenzhen, 518172 China
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45
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Montes-Grajales D, Martínez-Romero E, Olivero-Verbel J. Phytoestrogens and mycoestrogens interacting with breast cancer proteins. Steroids 2018; 134:9-15. [PMID: 29608946 DOI: 10.1016/j.steroids.2018.03.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 03/20/2018] [Accepted: 03/27/2018] [Indexed: 12/22/2022]
Abstract
Breast cancer is a highly heterogeneous disease influenced by the hormonal microenvironment and the most common malignancy in women worldwide. Some phytoestrogens and mycoestrogens have been epidemiologically linked as risk factors or protectors, however their mechanisms of action are complex and not fully understood. The aim of this study was to predict the potential of 36 natural xenoestrogens to interact with 189 breast cancer proteins using AutoDock Vina. In order to validate our protocol, an in silico docking pose and binding site determination was compared with the crystallographic structure and the power of prediction to distinguish between ligand and decoys was evaluated through a receiver operating characteristic curve (ROC) of the resultant docking affinities and in vitro data. The best affinity score was obtained for glyceollin III interacting with the sex hormone binding globulin (-11.9 Kcal/mol), a plasma steroid transport protein that regulates sex steroids bioavailability. Other natural xenoestrogens such as beta-carotene, chrysophanol 8-O-beta-d-glucopyranoside and glyceollin I, also presented good affinity for proteins related to this disease and the validation was successful. This study may help to prioritize compounds for toxicity tests or drug development from natural scaffolds, and to elucidate their mechanisms of action.
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Affiliation(s)
- Diana Montes-Grajales
- Environmental and Computational Chemistry Group, School of Pharmaceutical Sciences, Zaragocilla Campus, University of Cartagena, Cartagena 130015, Colombia; Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México UNAM, Cuernavaca-Morelos 62210, Mexico
| | - Esperanza Martínez-Romero
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México UNAM, Cuernavaca-Morelos 62210, Mexico
| | - Jesus Olivero-Verbel
- Environmental and Computational Chemistry Group, School of Pharmaceutical Sciences, Zaragocilla Campus, University of Cartagena, Cartagena 130015, Colombia.
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46
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Yang Q, Cui ZL, Wang Q, Jin XB, Zhao Y, Wang MW, Song W, Qu HW, Kang WT. PlncRNA-1 induces apoptosis through the Her-2 pathway in prostate cancer cells. Asian J Androl 2018; 19:453-457. [PMID: 27232851 PMCID: PMC5507092 DOI: 10.4103/1008-682x.178849] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
To determine whether PlncRNA-1 induces apoptosis in prostate cancer cells through the Her-2 pathway. The expression of PlncRNA-1, Her-2, and related cyclin proteins in 23 cases of prostate cancer and adjacent normal tissues was analyzed and compared. LNCaP cells were divided into a control group and an LNCaP-PlncRNA-1-siRNA experimental group. Normal prostate RWPE-1 cells were divided into an RWPE-1 control group and an RWPE-1-PlncRNA-1 experimental group. After PlncRNA-1 silencing and overexpression, changes in Her-2 and cyclinD1 expression levels were detected both in vivo and in vitro. In prostate cancer tissues, Her-2 and PlncRNA-1 were highly expressed and significantly correlated. In LNCaP cells, the expression of Her-2 and cyclinD1 decreased following the downregulation of PlncRNA-1 as assessed by real-time PCR and Western blotting. In RWPE-1 cells, the expression of Her-2 and cyclinD1 increased following PlncRNA-1 overexpression. Flow cytometry revealed that the proportion of LNCaP cells in G2/M phase was significantly increased after PlncRNA-1 silencing and that the proportion of RWPE-1 cells in G2/M phase was significantly decreased after PlncRNA-1 overexpression. Furthermore, animal experiments validated these results. In conclusion, in prostate cancer, PlncRNA-1 regulates the cell cycle and cyclinD1 levels and can also regulate proliferation and apoptosis in prostate cancer cells through the Her-2 pathway.
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Affiliation(s)
- Qing Yang
- Department of Breast and Thyroid Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, PR China
| | - Zi-Lian Cui
- Shandong University School of Medicine, Jinan, Shandong, PR China.,Minimally Invasive Urology Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, PR China
| | - Qin Wang
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, Shandong, PR China
| | - Xun-Bo Jin
- Minimally Invasive Urology Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, PR China
| | - Yong Zhao
- Minimally Invasive Urology Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, PR China
| | - Mu-Wen Wang
- Minimally Invasive Urology Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, PR China
| | - Wei Song
- Minimally Invasive Urology Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, PR China
| | - Hua-Wei Qu
- Minimally Invasive Urology Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, PR China
| | - Wei-Ting Kang
- Minimally Invasive Urology Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, PR China
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Maadi H, Nami B, Tong J, Li G, Wang Z. The effects of trastuzumab on HER2-mediated cell signaling in CHO cells expressing human HER2. BMC Cancer 2018; 18:238. [PMID: 29490608 PMCID: PMC5831215 DOI: 10.1186/s12885-018-4143-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 02/19/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Targeted therapy with trastuzumab has become a mainstay for HER2-positive breast cancer without a clear understanding of the mechanism of its action. While many mechanisms have been suggested for the action of trastuzumab, most of them are not substantiated by experimental data. It has been suggested that trastuzumab functions by inhibiting intracellular signaling initiated by HER2, however, the data are very controversial. A major issue is the different cellular background of various breast cancer cells lines used in these studies. Each breast cancer cell line has a unique expression profile of various HER receptors, which could significantly affect the effects of trastuzumab. METHODS To overcome this problem, in this research we adopted a cell model that allow us to specifically examine the effects of trastuzumab on a single HER receptor without the influence of other HER receptors. Three CHO cell lines stably expressing only human EGFR (CHO-EGFR), HER2 (CHO-K6), or HER3 (CHO-HER3) were used. Various methods including cytotoxicity assay, immunoblotting, indirect immunofluorescence, cross linking, and antibody-dependent cellular cytotoxicity (ADCC) were employed in this research. RESULTS We showed that trastuzumab did not bind EGFR and HER3, and thus did not affect the homodimerization and phosphorylation of EGFR and HER3. However, overexpression of HER2 in CHO cells, in the absence of other HER receptors, resulted in the homodimerization of HER2 and the phosphorylation of HER2 at all major pY residues. Trastuzumab bound to HER2 specifically and with high affinity. Trastuzumab inhibited neither the homodimerization of HER2, nor the phosphorylation of HER2 at most phosphotyrosine residues. Moreover, trastuzumab did not inhibit the phosphorylation of ERK and AKT in CHO-K6 cells, and did not inhibit the proliferation of CHO-K6 cells. However, trastuzumab induced strong ADCC in CHO-K6 cells. CONCLUSION We concluded that, in the absence of other HER receptors, trastuzumab exerts its antitumor activity through the induction of ADCC, rather than the inhibition of HER2-homodimerization and phosphorylation.
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Affiliation(s)
- Hamid Maadi
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Babak Nami
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Junfeng Tong
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Gina Li
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Zhixiang Wang
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada.
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Richard S, Selle F, Lotz JP, Khalil A, Gligorov J, Soares DG. Pertuzumab and trastuzumab: the rationale way to synergy. AN ACAD BRAS CIENC 2018; 88 Suppl 1:565-77. [PMID: 27275646 DOI: 10.1590/0001-3765201620150178] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 05/05/2015] [Indexed: 02/03/2023] Open
Abstract
It has now been 15 years since the HER2-targeted monoclonal antibody trastuzumab was introduced in clinical and revolutionized the treatment of HER2-positive breast cancer patients. Despite this achievement, most patients with HER2-positive metastatic breast cancer still show progression of their disease, highlighting the need for new therapies. The continuous interest in novel targeted agents led to the development of pertuzumab, the first in a new class of agents, the HER dimerization inhibitors. Pertuzumab is a novel recombinant humanized antibody directed against extracellular domain II of HER2 protein that is required for the heterodimerization of HER2 with other HER receptors, leading to the activation of downstream signalling pathways. Pertuzumab combined with trastuzumab plus docetaxel was approved for the first-line treatment of patients with HER2-positive metastatic breast cancer and is currently used as a standard of care in this indication. In the neoadjuvant setting, the drug was granted FDA-accelerated approval in 2013. Pertuzumab is also being evaluated in the adjuvant setting. The potential of pertuzumab relies in the dual complete blockade of the HER2/3 axis when administered with trastuzumab. This paper synthetises preclinical and clinical data on pertuzumab and highlights the mechanisms underlying the synergistic activity of the combination pertuzumab-trastuzumab which are essentially due to their complementary mode of action.
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Affiliation(s)
- Sandrine Richard
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France
| | - Frédéric Selle
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France
| | - Jean-Pierre Lotz
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France.,Institut Universitaire de Cancérologie Université Pierre et Marie Curie (IUC-UPMC Univ Paris 06), Sorbonne Universités, 4 place Jussieu, 75005 Paris, France, Université Curie Paris 6, Institut Universitaire de Cancérologie, Université Pierre et Marie Curie, Paris , France
| | - Ahmed Khalil
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France
| | - Joseph Gligorov
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France.,Institut Universitaire de Cancérologie Université Pierre et Marie Curie (IUC-UPMC Univ Paris 06), Sorbonne Universités, 4 place Jussieu, 75005 Paris, France, Université Curie Paris 6, Institut Universitaire de Cancérologie, Université Pierre et Marie Curie, Paris , France
| | - Daniele G Soares
- Medical Oncology Department, APREC (Alliance Pour la Recherche En Cancérologie), Tenon Hospital (Hôpitaux Universitaires de l'Est-Parisien, AP-HP), rue de la Chine, 75020 Paris, France, Medical Oncology Department, Tenon Hospital, Paris , France
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Sarina N, Abeldenov S, Turgimbayeva A, Zhylkibayev A, Ramankulov Y, Khassenov B, Eskendirova S. Obtaining and characterization of monoclonal antibodies against recombinant extracellular domain of human epidermal growth factor receptor 2. Hum Antibodies 2018; 26:103-111. [PMID: 29036807 DOI: 10.3233/hab-170327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Human epidermal growth factor receptor 2 (HER2) is an important biomarker for detection and treatment of different types of cancers such as breast, ovarian, stomach cancer. In this study, we developed a monoclonal antibody against the extracellular domain (ECD) of HER2 biomarker of breast cancer. For this purpose, the ECD-HER2 gene was amplified and cloned into an expression vector. Gene was generated in Escherichia coli BL21 (DE3) strain for expression of recombinant protein. The expressed protein was separated by SDS-PAGE and detected by anti-his monoclonal antibody in immunoblotting. Hybridoma cells were obtained by fusing myeloma cells with mouse spleen cells injected with recombinant ECD-HER2 and screened by ELISA for the production of monoclonal antibody. The results indicate that out of three candidate hybridoma cells one clone (1E7) was producing the highest titer and antibody specificity was envisioned in ELISA results. In vivo scaling up culture of hybridoma cells in BALB/C mice lead to significant increase in the monoclonal antibody concentration up to 16 mg/ml. Immunochemical methods demonstrated the specificity of developed antibody against ECD-HER2 protein.
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MESH Headings
- Amino Acid Sequence
- Animals
- Antibodies, Monoclonal/biosynthesis
- Antibodies, Monoclonal/isolation & purification
- Antibodies, Monoclonal/pharmacology
- Antibody Specificity
- Antineoplastic Agents, Immunological/isolation & purification
- Antineoplastic Agents, Immunological/metabolism
- Antineoplastic Agents, Immunological/pharmacology
- Biomarkers, Tumor/antagonists & inhibitors
- Biomarkers, Tumor/chemistry
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/immunology
- Breast Neoplasms/drug therapy
- Breast Neoplasms/genetics
- Breast Neoplasms/immunology
- Breast Neoplasms/pathology
- Cell Fusion
- Cloning, Molecular
- Escherichia coli/genetics
- Escherichia coli/metabolism
- Female
- Gene Expression
- Genetic Vectors/chemistry
- Genetic Vectors/metabolism
- Humans
- Hybridomas/immunology
- Mice
- Mice, Inbred BALB C
- Models, Molecular
- Multiple Myeloma/immunology
- Protein Interaction Domains and Motifs
- Protein Structure, Secondary
- Receptor, ErbB-2/antagonists & inhibitors
- Receptor, ErbB-2/chemistry
- Receptor, ErbB-2/genetics
- Receptor, ErbB-2/immunology
- Recombinant Fusion Proteins/chemistry
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/immunology
- Sequence Alignment
- Spleen/cytology
- Spleen/immunology
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50
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NRF2 Regulates HER1 Signaling Pathway to Modulate the Sensitivity of Ovarian Cancer Cells to Lapatinib and Erlotinib. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:1864578. [PMID: 29410730 PMCID: PMC5749283 DOI: 10.1155/2017/1864578] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 09/09/2017] [Accepted: 10/16/2017] [Indexed: 12/24/2022]
Abstract
NF-E2-related factor 2 (NRF2) regulates the transcription of a battery of metabolic and cytoprotective genes. NRF2 and epidermal growth factor receptors (EGFRs/HERs) are regulators of cellular proliferation and determinants of cancer initiation and progression. NRF2 and HERs confer cancers with resistance to several therapeutic agents. Nevertheless, there is limited understanding of the regulation of HER expression and activation and the link between NRF2 and HER signalling pathways. We show that NRF2 regulates both basal and inducible expression of HER1, as treatment of ovarian cancer cells (PEO1, OVCAR3, and SKOV3) with NRF2 activator tBHQ inducing HER1, while inhibition of NRF2 by siRNA knockdown or with retinoid represses HER1. Furthermore, treatment of cells with tBHQ increased total and phosphorylated NRF2, HER1, and AKT levels and compromised the cytotoxic effect of lapatinib or erlotinib. Treatment with siRNA or retinoid antagonised the effect of tBHQ on NRF2 and HER1 levels and enhanced the sensitivity of ovarian cancer cells to lapatinib or erlotinib. Pharmacological or genetic inhibition of NRF2 and/or treatment with lapatinib or erlotinib elevated cellular ROS and depleted glutathione. This extends the understanding of NRF2 and its regulation of HER family receptors and opens a strategic target for improving cancer therapy.
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