1
|
Feng A, Li L, He N, Li D, Zheng D, Liu Y, Yang H. A ratiometric electrochemical biosensor based on ARGET ATRP for detection of HER2 gene. Talanta 2024; 275:126130. [PMID: 38653117 DOI: 10.1016/j.talanta.2024.126130] [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: 09/24/2023] [Revised: 04/15/2024] [Accepted: 04/17/2024] [Indexed: 04/25/2024]
Abstract
Human epidermal growth factor receptor 2 (HER2), a common proto-oncogene, is overexpressed in a subset of breast cancer patients. It is essential to track HER2 expression for early breast cancer diagnosis. Herein, a ratiometric electrochemical biosensor for detection of HER2 based on activators generated by electron transfer for atom transfer radical polymerisation (AGET ATRP) and hairpin DNA was developed. Specifically, hairpin DNA was first self-assembled on the gold electrode by Au-S bond. Upon capturing HER2, the stem-loop structure of hairpin DNA was unfolded, the signal value of methylene blue (MB) decreased as it moved away from the electrode surface. cDNA was linked with HER2 by complementary base pairing to introduce amino group. Then, the initiator 2-bromo-2-methylpropionic acid (BMP) were connected to the amino group on the cDNA to activate ARGET ATRP. The detection performance of biosensors for HER2 was explored by the ratio signal between two signal molecules. Under optimal conditions, this ratiometric electrochemical biosensor shows good selectivity and stability with a wide detection range of 1-1 × 106 pM and a detection limit of 78.47 fM. Furthermore, the biosensor exhibits satisfactory anti-interference ability due to the hairpin DNA and dual signal system, and has promising application prospects in the detection of other DNA disease markers.
Collapse
Affiliation(s)
- Aozi Feng
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Li Li
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Ningxia He
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Daoxiang Li
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Danna Zheng
- Science and Education Office, the First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510632, China.
| | - Yanju Liu
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, China.
| | - Huaixia Yang
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, China.
| |
Collapse
|
2
|
Forster‐Sack M, Zoche M, Pestalozzi B, Witzel I, Schwarz EI, Herzig JJ, Fansa H, Tausch C, Ross J, Moch H, Varga Z. ERBB2-amplified lobular breast carcinoma exhibits concomitant CDK12 co-amplification associated with poor prognostic features. J Pathol Clin Res 2024; 10:e12362. [PMID: 38335502 PMCID: PMC10800294 DOI: 10.1002/2056-4538.12362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 12/06/2023] [Accepted: 12/22/2023] [Indexed: 02/12/2024]
Abstract
Most invasive lobular breast carcinomas (ILBCs) are luminal-type carcinomas with an HER2-negative phenotype (ERBB2 or HER2 un-amplified) and CDH1 mutations. Rare variants include ERBB2-amplified subtypes associated with an unfavorable prognosis and less response to anti-HER2 targeted therapies. We analyzed the clinicopathological and molecular features of ERBB2-amplified ILBC and compared these characteristics with ERBB2-unamplified ILBC. A total of 253 patients with ILBC were analyzed. Paraffin-embedded formalin-fixed tumor samples from 250 of these patients were added to a tissue microarray. Protein expression of prognostic, stem cell and breast-specific markers was tested by immunohistochemistry (IHC). Hybrid capture-based comprehensive genomic profiling (CGP) was performed for 10 ILBCs that were either fluorescent in situ hybridization (FISH) or IHC positive for HER2 amplification/overexpression and 10 ILBCs that were either FISH or IHC negative. Results were compared with a CGP database of 44,293 invasive breast carcinomas. The CGP definition of ERBB2 amplification was five copies or greater. A total of 17 of 255 ILBC (5%) were ERBB2 amplified. ERBB2-amplified ILBC had higher tumor stage (p < 0.0001), more frequent positive nodal status (p = 0.00022), more distant metastases (p = 0.012), and higher histological grade (p < 0.0001), and were more often hormone receptor negative (p < 0.001) and more often SOX10 positive (p = 0.005). ERBB2 short variant sequence mutations were more often detected in ERBB2-unamplified tumors (6/10, p = 0.027), whereas CDH1 mutations/copy loss were frequently present in both subgroups (9/10 and 7/10, respectively). Amplification of pathogenic genes were more common in HER2-positive ILBC (p = 0.0009). CDK12 gene amplification (≥6 copies) was detected in 7 of 10 ERBB2-amplified ILBC (p = 0.018). There were no CDK12 gene amplifications reported in 44,293 invasive breast carcinomas in the FMI Insights CGP database. ERBB2-amplified ILBC is a distinct molecular subgroup with frequent coamplification of CDK12, whereas ERBB2 sequence mutations occur only in ERBB2-unamplified ILBC. CDK12/ERBB2 co-amplification may explain the poor prognosis and therapy resistance of ERBB2-amplified ILBC.
Collapse
Affiliation(s)
- Miriam Forster‐Sack
- Department of Pathology and Molecular PathologyUniversity Hospital ZurichZürichSwitzerland
| | - Martin Zoche
- Department of Pathology and Molecular PathologyUniversity Hospital ZurichZürichSwitzerland
| | - Bernhard Pestalozzi
- Department of OncologyUniversity Hospital ZurichZürichSwitzerland
- Comprehensive Cancer Center, Breast CenterUniversity Hospital ZurichZürichSwitzerland
| | - Isabell Witzel
- Comprehensive Cancer Center, Breast CenterUniversity Hospital ZurichZürichSwitzerland
- Department of GynecologyUniversity Hospital Zurich, University of ZurichZürichSwitzerland
| | | | | | - Hisham Fansa
- Breast CenterHospital ZollikerbergZollikerbergSwitzerland
| | | | - Jeff Ross
- Department of Pathology, Urology and Medicine (Oncology)Upstate Medical UniversitySyracuseNYUSA
- Foundation Medicine, Inc.CambridgeMAUSA
| | - Holger Moch
- Department of Pathology and Molecular PathologyUniversity Hospital ZurichZürichSwitzerland
| | - Zsuzsanna Varga
- Department of Pathology and Molecular PathologyUniversity Hospital ZurichZürichSwitzerland
| |
Collapse
|
3
|
Lin Y, Wu Y, Zhang Q, Tu X, Chen S, Pan J, Xu N, Lin M, She P, Niu G, Chen Y, Li H. RPTOR blockade suppresses brain metastases of NSCLC by interfering the ceramide metabolism via hijacking YY1 binding. J Exp Clin Cancer Res 2024; 43:1. [PMID: 38163890 PMCID: PMC10759737 DOI: 10.1186/s13046-023-02874-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 10/29/2023] [Indexed: 01/03/2024] Open
Abstract
BACKGROUND Ceramide metabolism is crucial in the progress of brain metastasis (BM). However, it remains unexplored whether targeting ceramide metabolism may arrest BM. METHODS RNA sequencing was applied to screen different genes in primary and metastatic foci and whole-exome sequencing (WES) to seek crucial abnormal pathway in BM + and BM-patients. Cellular arrays were applied to analyze the permeability of blood-brain barrier (BBB) and the activation or inhibition of pathway. Database and Co-Immunoprecipitation (Co-IP) assay were adopted to verify the protein-protein interaction. Xenograft and zebrafish model were further employed to verify the cellular results. RESULTS RNA sequencing and WES reported the involvement of RPTOR and ceramide metabolism in BM progress. RPTOR was significantly upregulated in BM foci and increased the permeability of BBB, while RPTOR deficiency attenuated the cell invasiveness and protected extracellular matrix. Exogenous RPTOR boosted the SPHK2/S1P/STAT3 cascades by binding YY1, in which YY1 bound to the regions of SPHK2 promoter (at -353 ~ -365 nt), further promoting the expression of SPHK2. The latter was rescued by YY1 RNAi. Xenograft and zebrafish model showed that RPTOR blockade suppressed BM of non-small cell lung cancer (NSCLC) and impaired the SPHK2/S1P/STAT3 pathway. CONCLUSION RPTOR is a key driver gene in the brain metastasis of lung cancer, which signifies that RPTOR blockade may serve as a promising therapeutic candidate for clinical application.
Collapse
Affiliation(s)
- Ying Lin
- Department of Respiratory and Critical Care Medicine, Shengli Clinical Medical College, Fujian Medical University, Fujian Provincial Hospital, Fuzhou, 350001, Fujian, China
| | - Yun Wu
- Department of General Practice Medicine, Fujian Provincial Hospital, Fuzhou, 350001, China
| | - Qiangzu Zhang
- The High Performance Computing Research Center, Institute of Computing Technology, Chinese Academy of Sciences, Beijing, 100095, China
| | - Xunwei Tu
- Department of Respiratory and Critical Care Medicine, Shengli Clinical Medical College, Fujian Medical University, Fujian Provincial Hospital, Fuzhou, 350001, Fujian, China
| | - Sufang Chen
- Department of Respiratory and Critical Care Medicine, Shengli Clinical Medical College, Fujian Medical University, Fujian Provincial Hospital, Fuzhou, 350001, Fujian, China
| | - Junfan Pan
- Department of Respiratory and Critical Care Medicine, Shengli Clinical Medical College, Fujian Medical University, Fujian Provincial Hospital, Fuzhou, 350001, Fujian, China
| | - Nengluan Xu
- Department of Respiratory and Critical Care Medicine, Shengli Clinical Medical College, Fujian Medical University, Fujian Provincial Hospital, Fuzhou, 350001, Fujian, China
| | - Ming Lin
- Department of Respiratory and Critical Care Medicine, Shengli Clinical Medical College, Fujian Medical University, Fujian Provincial Hospital, Fuzhou, 350001, Fujian, China
| | - Peiwei She
- The Centre for Experimental Research in Clinical Medicine, Fujian Provincial Hospital, Fuzhou, 350001, Fujian, China
| | - Gang Niu
- The High Performance Computing Research Center, Institute of Computing Technology, Chinese Academy of Sciences, Beijing, 100095, China.
| | - Yusheng Chen
- Department of Respiratory and Critical Care Medicine, Shengli Clinical Medical College, Fujian Medical University, Fujian Provincial Hospital, Fuzhou, 350001, Fujian, China.
| | - Hongru Li
- Department of Respiratory and Critical Care Medicine, Shengli Clinical Medical College, Fujian Medical University, Fujian Provincial Hospital, Fuzhou, 350001, Fujian, China.
- Fujian Provincial Key Laboratory of Medical Big Data Engineering, Fujian Provincial Hospital, Shengli Clinical College of Fujian Medical University, Fuzhou, 350001, Fujian, China.
| |
Collapse
|
4
|
Couto JP, Vulin M, Jehanno C, Coissieux M, Hamelin B, Schmidt A, Ivanek R, Sethi A, Bräutigam K, Frei AL, Hager C, Manivannan M, Gómez‐Miragaya J, Obradović MMS, Varga Z, Koelzer VH, Mertz KD, Bentires‐Alj M. Nicotinamide N-methyltransferase sustains a core epigenetic program that promotes metastatic colonization in breast cancer. EMBO J 2023; 42:e112559. [PMID: 37259596 PMCID: PMC10308372 DOI: 10.15252/embj.2022112559] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 04/25/2023] [Accepted: 05/05/2023] [Indexed: 06/02/2023] Open
Abstract
Metastatic colonization of distant organs accounts for over 90% of deaths related to solid cancers, yet the molecular determinants of metastasis remain poorly understood. Here, we unveil a mechanism of colonization in the aggressive basal-like subtype of breast cancer that is driven by the NAD+ metabolic enzyme nicotinamide N-methyltransferase (NNMT). We demonstrate that NNMT imprints a basal genetic program into cancer cells, enhancing their plasticity. In line, NNMT expression is associated with poor clinical outcomes in patients with breast cancer. Accordingly, ablation of NNMT dramatically suppresses metastasis formation in pre-clinical mouse models. Mechanistically, NNMT depletion results in a methyl overflow that increases histone H3K9 trimethylation (H3K9me3) and DNA methylation at the promoters of PR/SET Domain-5 (PRDM5) and extracellular matrix-related genes. PRDM5 emerged in this study as a pro-metastatic gene acting via induction of cancer-cell intrinsic transcription of collagens. Depletion of PRDM5 in tumor cells decreases COL1A1 deposition and impairs metastatic colonization of the lungs. These findings reveal a critical activity of the NNMT-PRDM5-COL1A1 axis for cancer cell plasticity and metastasis in basal-like breast cancer.
Collapse
Affiliation(s)
- Joana Pinto Couto
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
- Friedrich Miescher Institute for Biomedical ResearchBaselSwitzerland
| | - Milica Vulin
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
- Friedrich Miescher Institute for Biomedical ResearchBaselSwitzerland
| | - Charly Jehanno
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
| | - Marie‐May Coissieux
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
- Friedrich Miescher Institute for Biomedical ResearchBaselSwitzerland
| | - Baptiste Hamelin
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
| | - Alexander Schmidt
- Proteomics Core Facility, BiozentrumUniversity of BaselBaselSwitzerland
| | - Robert Ivanek
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Swiss Institute of BioinformaticsBaselSwitzerland
| | - Atul Sethi
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
- Friedrich Miescher Institute for Biomedical ResearchBaselSwitzerland
- Swiss Institute of BioinformaticsBaselSwitzerland
| | - Konstantin Bräutigam
- Computational and Translational Pathology Group, Department of Pathology and Molecular Pathology, University Hospital ZurichUniversity of ZurichZürichSwitzerland
- Institute of PathologyUniversity of BernBernSwitzerland
| | - Anja L Frei
- Computational and Translational Pathology Group, Department of Pathology and Molecular Pathology, University Hospital ZurichUniversity of ZurichZürichSwitzerland
| | - Carolina Hager
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
| | - Madhuri Manivannan
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
| | - Jorge Gómez‐Miragaya
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
| | - Milan MS Obradović
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
- Friedrich Miescher Institute for Biomedical ResearchBaselSwitzerland
| | - Zsuzsanna Varga
- Computational and Translational Pathology Group, Department of Pathology and Molecular Pathology, University Hospital ZurichUniversity of ZurichZürichSwitzerland
| | - Viktor H Koelzer
- Computational and Translational Pathology Group, Department of Pathology and Molecular Pathology, University Hospital ZurichUniversity of ZurichZürichSwitzerland
| | - Kirsten D Mertz
- Institute of PathologyCantonal Hospital BasellandLiestalSwitzerland
| | - Mohamed Bentires‐Alj
- Department of Biomedicine, University Hospital BaselUniversity of BaselBaselSwitzerland
- Department of SurgeryUniversity Hospital BaselBaselSwitzerland
- Friedrich Miescher Institute for Biomedical ResearchBaselSwitzerland
| |
Collapse
|
5
|
Memon R, Prieto Granada CN, Harada S, Winokur T, Reddy V, Kahn AG, Siegal GP, Wei S. Discordance Between Immunohistochemistry and In Situ Hybridization to Detect HER2 Overexpression/Gene Amplification in Breast Cancer in the Modern Age: A Single Institution Experience and Pooled Literature Review Study. Clin Breast Cancer 2021; 22:e123-e133. [PMID: 34120846 DOI: 10.1016/j.clbc.2021.05.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 04/26/2021] [Accepted: 05/08/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Human epidermal growth factor 2 (HER2) amplification and/or overexpression occurs in 12% to 25% of breast cancers. Accurate detection of HER2 is critical in predicting response to HER2-targeted therapy. Both immunohistochemistry (IHC) and in situ hybridization (ISH) are FDA-approved methods for detecting HER2 status because its protein overexpression is largely attributable to gene amplification. However, variable discordant results between IHC and ISH have been reported. METHODS We determined the frequency of HER2 IHC/ISH discordance in these patients and also performed a pooled literature review analysis. RESULTS Of the 1125 consecutive primary or metastatic breast cancers with HER2 IHC and ISH performed simultaneously between 2015 and 2020, 84.6% had an unequivocal HER2 status. Discordance was found in 30 cases from 26 patients, including 13 IHC-/ISH+ and 17 IHC+/ISH-, representing 1.6% and 11.9% of IHC- and IHC+ cases, respectively. Review of the literature between 2001 and 2020 identified 46 relevant studies, with a total of 43,468 cases with IHC and ISH performed. The IHC-/ISH+ and IHC+/ISH- discordances were seen in all antibody clones and ISH methods used. The IHC+/ISH- discordance was significantly higher than IHC-/ISH+ (13.8% vs. 3%, P < .0001). The overall discordance constituted 4% of all cases and 5.4% of those with an unequivocal IHC status. Significantly lower incongruities for both IHC-/ISH+ and IHC+/ISH- were found in those published after 2018. The discordances probably reflect altered biology of HER2 oncogene/oncoprotein. Routinely performing both IHC and ISH may uncover such cases to prevent denial of potentially beneficial targeted therapy.
Collapse
Affiliation(s)
| | | | - Shuko Harada
- Department of Pathology; O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL
| | | | | | | | - Gene P Siegal
- Department of Pathology; O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL
| | - Shi Wei
- Department of Pathology; O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL.
| |
Collapse
|
6
|
Predictive significance of HER2 intratumoral heterogeneity, determined by simultaneous gene and protein analysis, for resistance to trastuzumab-based treatments for HER2-positive breast cancer. Virchows Arch 2021; 479:13-21. [PMID: 33496805 DOI: 10.1007/s00428-021-03036-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 01/01/2021] [Accepted: 01/15/2021] [Indexed: 10/22/2022]
Abstract
Gene-protein assay (GPA), a combination of immunohistochemistry and dual in situ hybridization, allows simultaneous visualization of HER2 protein and gene on a single slide. We aimed to clarify the clinical significance of HER2 intratumoral heterogeneity (ITH) using GPA. We investigated the relationships between various HER2 ITH indicators and clinical course in 102 patients with HER2-positive breast cancer, treated with neoadjuvant trastuzumab and chemotherapy. Five representative microscopic images were captured from each GPA slide of pre-therapeutic biopsy materials. All evaluable cancer cells in the images were individually assessed for HER2 gene copy number and protein expression. Mean and coefficient of variation (CV) of both gene copy number and protein category were calculated, and each was divided into negative, equivocal, and positive. Based on their combined status, cancer cells were classified into nine types. Pathological complete response (pCR) to neoadjuvant treatments showed positive relationships to mean gene copy number (P < 0.001), mean protein category (P < 0.001), and proportion of gene- and protein-positive tumor cells (P < 0.001) and showed negative relationships to the CV of protein category (P < 0.001) and the proportion of gene-amplified but protein-negative tumor cells (P = 0.002). Two diagnostic models, created by combining clinicopathological factors and ITH indicators, showed excellent potential diagnostic ability for pCR (mean gene copy number and protein category CV; AUC = 0.837, proportion of gene- and protein-positive tumor cells; AUC = 0.831). HER2 ITH quantified by GPA is a potential predictive indicator for efficacy of HER2-targeted treatment.
Collapse
|
7
|
Lee J, Park HS, Lee H, Lee DW, Song SY, Lew DH, Kim JY, Park S, Kim SI. Post-Operative Complications and Nipple Necrosis Rates Between Conventional and Robotic Nipple-Sparing Mastectomy. Front Oncol 2021; 10:594388. [PMID: 33489893 PMCID: PMC7819886 DOI: 10.3389/fonc.2020.594388] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 11/19/2020] [Indexed: 01/06/2023] Open
Abstract
Purpose This study is to directly compare surgical outcomes between conventional nipple-sparing mastectomy (CNSM) and robot-assisted nipple-sparing mastectomy (RNSM). Materials and Method For this case–control study, 369 cases of 333 patients who underwent CNSM or RNSM with immediate reconstruction between November 2016 and January 2019 at Severance Hospital in Seoul, Republic of Korea were reviewed. Patients with stage IV breast cancer (n = 1), receiving neoadjuvant chemotherapy (n = 43), or subjected to previous operations (n = 14) or radiotherapy on the breasts were excluded. The main outcomes were comparing rates of post-operative complications, of high-grade post-operative complications as defined by the Clavien-Dindo classification, and nipple necrosis between the CNSM and the RNSM groups. Results A total of 311 cases, including 270 CNSMs and 41 RNSMs, were analyzed. The rates of post-operative nipple necrosis (p = 0.026, 2.4 vs. 15.2%) and of high-grade post-operative complications (p = 0.031, 34.8 vs. 17.1%) in the RNSM group were significantly lower than those in the CNSM group. Conclusion RNSM was associated with lower rates of high-grade post-operative complications and nipple necrosis than CNSM for patients with small breast volumes and less ptotic breasts.
Collapse
Affiliation(s)
- Jeea Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyung Seok Park
- Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea.,Department of Plastic and Reconstructive Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Haemin Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Dong Won Lee
- Department of Plastic and Reconstructive Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Seung Yong Song
- Department of Plastic and Reconstructive Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Dae Hyun Lew
- Department of Plastic and Reconstructive Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Jee Ye Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Seho Park
- Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Seung Il Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| |
Collapse
|
8
|
Kim MC, Kang SH, Choi JE, Bae YK. Impact of the Updated Guidelines on Human Epidermal Growth Factor Receptor 2 (HER2) Testing in Breast Cancer. J Breast Cancer 2020; 23:484-497. [PMID: 33154824 PMCID: PMC7604374 DOI: 10.4048/jbc.2020.23.e53] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/13/2020] [Indexed: 01/13/2023] Open
Abstract
Purpose In 2007, the American Society of Clinical Oncology and the College of American Pathologists had established a human epidermal growth factor receptor 2 (HER2) testing guideline, which was updated in 2013 and subsequently in 2018. We assessed the clinical impact of the recent update by comparing the in situ hybridization (ISH) results based on the 2007, 2013, and 2018 guidelines. Methods We assessed 2 cohorts. The first cohort included 1,161 primary invasive breast cancer (IBC) samples including 18 bilateral IBC cases, with both immunohistochemistry (IHC) and silver-enhanced ISH (SISH) results available for the HER2 status. The second cohort included 160 IBC cases with equivocal HER2 IHC, assessed using SISH. We retrospectively evaluated and compared the HER2 SISH results. Results There were 22 (1.9%) and 20 (12.5%) cases with altered SISH results according to the 2013 guidelines in cohorts 1 and 2, respectively. As per the 2018 guidelines, final HER2 statuses of 16 (1.4%) and 14 (8.5%) cases changed in cohorts 1 and 2, respectively. The 2013 guidelines increased the positive rate compared to the 2007 guidelines, in both cohorts (0.6% and 6.2%, respectively). Most equivocal cases in cohorts 1 (92.3%) and 2 (100%) as per the 2013 guidelines were reclassified as HER2-negative according to the 2018 guidelines. The 2018 guidelines increased the negative rates (1.3% in cohort 1 and 8.7% in cohort 2) and slightly decreased the positive rates (−0.2% in cohort 1 and −3.1% in cohort 2), compared to the 2013 guidelines. With each update, minor changes in the positive and negative rates were observed in whole breast cancer samples (cohort 1). However, the 2018 guidelines affected previously defined HER2-positive IBC with equivocal IHC results. Conclusion Under the 2013 guidelines, the positive and equivocal cases increased. However, the 2018 guidelines eliminated ambiguous cases by reclassifying them as HER2-negative.
Collapse
Affiliation(s)
- Min Chong Kim
- Department of Pathology, Yeungnam University College of Medicine, Daegu, Korea
| | - Su Hwan Kang
- Department of Breast Surgery, Yeungnam University College of Medicine, Daegu, Korea
| | - Jung Eun Choi
- Department of Breast Surgery, Yeungnam University College of Medicine, Daegu, Korea
| | - Young Kyung Bae
- Department of Pathology, Yeungnam University College of Medicine, Daegu, Korea
| |
Collapse
|
9
|
Stocker A, Trojan A, Elfgen C, Hilbers ML, Moskovszky L, Varga Z. Differential prognostic value of positive HER2 status determined by immunohistochemistry or fluorescence in situ hybridization in breast cancer. Breast Cancer Res Treat 2020; 183:311-319. [PMID: 32638236 DOI: 10.1007/s10549-020-05772-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/23/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE Human epidermal growth factor-receptor-2 (HER2) is a membrane-tyrosine-kinase that is amplified/overexpressed up to 20% in breast cancer. HER2 positive status is associated with faster disease progression, higher metastatic potential, and shorter disease-free/overall survival and also has emerged as an important therapeutic target in breast cancer. HER2 status can be determined by in-situ-hybridization (ISH) or immunohistochemistry (IHC). Although the concordance rate between ISH and IHC is well-known, the prognostic power of both technologies if tested in parallel on the same tumor has not been studied extensively. METHODS In this study we retrospectively analyzed a large HER2 positive breast cancer cohort tested both with fluorescence labeled ISH (FISH) and IHC in parallel on each case. We stratified HER2 positive results by FISH and IHC with long-term overall survival, 5-year survival and metastases/recurrence rates. Positive HER2 status both FISH and IHC was available in 364 patients. RESULTS The number of HER2 FISH-positive and FISH-negative patients was 342 and 22, respectively. The number of HER2 IHC 0/1 + , IHC 2 + , and IHC 3 + patients was 12, 42, and 310, respectively. Among the patients with IHC 3 + status, 288 were FISH-positive and 22 FISH-negative. HER2 status determined by FISH correlated with clinical outcomes (overall survival and with metastases/recurrence, p = 0.036, p = 0.039), whereas HER2 status determined by IHC did not. CONCLUSION Our results indicate that prognostic information in HER2 positive breast cancer also depends on the methodology of how positivity was determined. In our cohort, FISH was superior to IHC based positive HER2 status.
Collapse
Affiliation(s)
- Albina Stocker
- Breast Center Seefeld and Oncocenter, Zurich, Switzerland.,County Hospital Waid, Zurich, Switzerland
| | - Andreas Trojan
- Breast Center Seefeld and Oncocenter, Zurich, Switzerland
| | - Constanze Elfgen
- Breast Center Seefeld and Oncocenter, Zurich, Switzerland.,University of Witten-Herdecke, Witten, Germany
| | | | - Linda Moskovszky
- Institute of Pathology and Molecular Pathology, University Hospital Zurich, Schmelzbergstrasse 12., CH-8091, Zurich, Switzerland
| | - Zsuzsanna Varga
- Institute of Pathology and Molecular Pathology, University Hospital Zurich, Schmelzbergstrasse 12., CH-8091, Zurich, Switzerland.
| |
Collapse
|
10
|
Sandén E, Khazaei S, Tryggvadottir H, Borgquist S, Isaksson K, Jirström K, Jernström H. Re-evaluation of HER2 status in 606 breast cancers-gene protein assay on tissue microarrays versus routine pathological assessment. Virchows Arch 2020; 477:317-320. [PMID: 32080761 PMCID: PMC7371653 DOI: 10.1007/s00428-020-02768-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/13/2020] [Accepted: 02/04/2020] [Indexed: 11/25/2022]
Abstract
Human epidermal growth factor receptor 2 (HER2) status in breast cancer is routinely determined through immunohistochemistry (IHC) and/or in situ hybridisation (ISH) performed on whole tissue sections (WS). The purpose was to evaluate whether a gene protein assay (GPA) combining IHC with ISH, performed on breast cancer tissue microarray (TMA), is suitable for large-scale retrospective HER2 status evaluation. TMAs from 606 tumours from a Swedish population-based cohort (2005-2012) were stained with GPA. GPA IHC on TMA yielded weaker staining than IHC on WS during routine pathological assessment (86.0% agreement). However, final HER2 status agreement between GPA on TMA and WS based on both IHC and ISH was 97.7%. Only 14 tumours were discordant and one tumour with IHC score 1+ on both TMA and WS was HER2 amplified on TMA. In conclusion, GPA on TMA is suitable for large-scale retrospective evaluation of HER2 status.
Collapse
Affiliation(s)
- Emma Sandén
- Department of Clinical Sciences in Lund, Oncology and Pathology, Faculty of Medicine, Lund University Cancer Center / Kamprad, Lund University and Skåne University Hospital, Lund, Sweden
| | - Somayeh Khazaei
- Department of Clinical Sciences in Lund, Oncology and Pathology, Faculty of Medicine, Lund University Cancer Center / Kamprad, Lund University and Skåne University Hospital, Lund, Sweden
| | - Helga Tryggvadottir
- Department of Clinical Sciences in Lund, Oncology and Pathology, Faculty of Medicine, Lund University Cancer Center / Kamprad, Lund University and Skåne University Hospital, Lund, Sweden
| | - Signe Borgquist
- Department of Clinical Sciences in Lund, Oncology and Pathology, Faculty of Medicine, Lund University Cancer Center / Kamprad, Lund University and Skåne University Hospital, Lund, Sweden
- Departments of Oncology and Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
| | - Karolin Isaksson
- Department of Clinical Sciences in Lund, Surgery, Faculty of Medicine, Lund University Cancer Center, Lund University and Skåne University Hospital, Lund, Sweden, and Central Hospital Kristianstad, Kristianstad, Sweden
| | - Karin Jirström
- Department of Clinical Sciences in Lund, Oncology and Pathology, Faculty of Medicine, Lund University Cancer Center / Kamprad, Lund University and Skåne University Hospital, Lund, Sweden
| | - Helena Jernström
- Department of Clinical Sciences in Lund, Oncology and Pathology, Faculty of Medicine, Lund University Cancer Center / Kamprad, Lund University and Skåne University Hospital, Lund, Sweden.
| |
Collapse
|
11
|
Nagpal A, Redvers RP, Ling X, Ayton S, Fuentes M, Tavancheh E, Diala I, Lalani A, Loi S, David S, Anderson RL, Smith Y, Merino D, Denoyer D, Pouliot N. Neoadjuvant neratinib promotes ferroptosis and inhibits brain metastasis in a novel syngeneic model of spontaneous HER2 +ve breast cancer metastasis. Breast Cancer Res 2019; 21:94. [PMID: 31409375 PMCID: PMC6693253 DOI: 10.1186/s13058-019-1177-1] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 07/26/2019] [Indexed: 12/24/2022] Open
Abstract
Background Human epidermal growth factor receptor-2 (HER2)-targeted therapies prolong survival in HER2-positive breast cancer patients. Benefit stems primarily from improved control of systemic disease, but up to 50% of patients progress to incurable brain metastases due to acquired resistance and/or limited permeability of inhibitors across the blood-brain barrier. Neratinib, a potent irreversible pan-tyrosine kinase inhibitor, prolongs disease-free survival in the extended adjuvant setting, and several trials evaluating its efficacy alone or combination with other inhibitors in early and advanced HER2-positive breast cancer patients are ongoing. However, its efficacy as a first-line therapy against HER2-positive breast cancer brain metastasis has not been fully explored, in part due to the lack of relevant pre-clinical models that faithfully recapitulate this disease. Here, we describe the development and characterisation of a novel syngeneic model of spontaneous HER2-positive breast cancer brain metastasis (TBCP-1) and its use to evaluate the efficacy and mechanism of action of neratinib. Methods TBCP-1 cells were derived from a spontaneous BALB/C mouse mammary tumour and characterised for hormone receptors and HER2 expression by flow cytometry, immunoblotting and immunohistochemistry. Neratinib was evaluated in vitro and in vivo in the metastatic and neoadjuvant setting. Its mechanism of action was examined by transcriptomic profiling, function inhibition assays and immunoblotting. Results TBCP-1 cells naturally express high levels of HER2 but lack expression of hormone receptors. TBCP-1 tumours maintain a HER2-positive phenotype in vivo and give rise to a high incidence of spontaneous and experimental metastases in the brain and other organs. Cell proliferation/viability in vitro is inhibited by neratinib and by other HER2 inhibitors, but not by anti-oestrogens, indicating phenotypic and functional similarities to human HER2-positive breast cancer. Mechanistically, neratinib promotes a non-apoptotic form of cell death termed ferroptosis. Importantly, metastasis assays demonstrate that neratinib potently inhibits tumour growth and metastasis, including to the brain, and prolongs survival, particularly when used as a neoadjuvant therapy. Conclusions The TBCP-1 model recapitulates the spontaneous spread of HER2-positive breast cancer to the brain seen in patients and provides a unique tool to identify novel therapeutics and biomarkers. Neratinib-induced ferroptosis provides new opportunities for therapeutic intervention. Further evaluation of neratinib neoadjuvant therapy is warranted. Electronic supplementary material The online version of this article (10.1186/s13058-019-1177-1) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Aadya Nagpal
- Matrix Microenvironment & Metastasis Laboratory, Olivia Newton-John Cancer Research Institute, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Richard P Redvers
- School of Cancer Medicine, La Trobe University, Bundoora, VIC, 3086, Australia.,Metastasis Research Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia
| | - Xiawei Ling
- Metastasis Research Laboratory, Peter MacCallum Cancer Centre, Melbourne, VIC, 3000, Australia
| | - Scott Ayton
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3052, Australia
| | - Miriam Fuentes
- Matrix Microenvironment & Metastasis Laboratory, Olivia Newton-John Cancer Research Institute, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Elnaz Tavancheh
- Matrix Microenvironment & Metastasis Laboratory, Olivia Newton-John Cancer Research Institute, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Irmina Diala
- Puma Biotechnology, Inc., 10880 Wilshire Blvd, Los Angeles, CA, 90024, USA
| | - Alshad Lalani
- Puma Biotechnology, Inc., 10880 Wilshire Blvd, Los Angeles, CA, 90024, USA
| | - Sherene Loi
- Translational Breast Cancer Genomics Laboratory, Peter MacCallum Cancer Centre, Melbourne, VIC, 3000, Australia
| | - Steven David
- Peter MacCallum Cancer Centre, Moorabbin Campus, East Bentleigh, VIC, 3165, Australia
| | - Robin L Anderson
- School of Cancer Medicine, La Trobe University, Bundoora, VIC, 3086, Australia.,Metastasis Research Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, 3000, Australia.,Department of Clinical Pathology, The University of Melbourne, Melbourne, VIC, 3000, Australia
| | - Yvonne Smith
- Royal College of Surgeons, Dublin, D02 YN77, Ireland
| | - Delphine Merino
- School of Cancer Medicine, La Trobe University, Bundoora, VIC, 3086, Australia.,Tumour Progression and Heterogeneity Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia.,Molecular Medicine Division, The Walter and ELIZA Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Delphine Denoyer
- Matrix Microenvironment & Metastasis Laboratory, Olivia Newton-John Cancer Research Institute, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Normand Pouliot
- Matrix Microenvironment & Metastasis Laboratory, Olivia Newton-John Cancer Research Institute, 145 Studley Road, Heidelberg, VIC, 3084, Australia. .,School of Cancer Medicine, La Trobe University, Bundoora, VIC, 3086, Australia. .,Department of Clinical Pathology, The University of Melbourne, Melbourne, VIC, 3000, Australia.
| |
Collapse
|
12
|
Song J, Wang H, Ng TI, Cui A, Zhu S, Huang Y, Sun L, Yang Z, Yu D, Yu P, Zhang H, Zhang Y, Xu W. Sequence Analysis of the Fusion Protein Gene of Human Respiratory Syncytial Virus Circulating in China from 2003 to 2014. Sci Rep 2018; 8:17618. [PMID: 30514963 PMCID: PMC6279739 DOI: 10.1038/s41598-018-35894-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 11/09/2018] [Indexed: 11/09/2022] Open
Abstract
The human respiratory syncytial virus (HRSV) fusion (F) protein is important for HRSV infection, but few studies have examined the genetic diversity of the F gene from Chinese samples. In this study, a total of 330 HRSV F sequences collected from different regions of China between 2003 and 2014 were analyzed to understand their genetic characteristics. In addition, these sequences were compared with 1150 HRSV F sequences in Genbank from 18 other countries. In phylogenetic analysis, Chinese HRSV F sequences sorted into a number of clusters containing sequences from China as well as other countries. F sequences from different genotypes (as determined based on the G gene sequences) within a HRSV subgroup could be found in the same clusters in phylogenetic trees generated based on F gene sequences. Amino acid analysis showed that HRSV F sequences from China and other countries were highly conserved. Of interest, F protein sequences from all Chinese samples were completely conserved at the palivizumab binding site, thus predicting the susceptibility of these strains to this neutralizing antibody. In conclusion, HRSV F sequences from China between 2003 and 2014, similar to those from other countries, were highly conserved.
Collapse
Affiliation(s)
- Jinhua Song
- WHO WPRO Regional Reference Measles/Rubella Laboratory and Key Laboratory of Medical Virology, National Health Commission of the People's Republic of China, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Huiling Wang
- WHO WPRO Regional Reference Measles/Rubella Laboratory and Key Laboratory of Medical Virology, National Health Commission of the People's Republic of China, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing, People's Republic of China
| | | | - Aili Cui
- WHO WPRO Regional Reference Measles/Rubella Laboratory and Key Laboratory of Medical Virology, National Health Commission of the People's Republic of China, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Shuangli Zhu
- WHO WPRO Regional Reference Measles/Rubella Laboratory and Key Laboratory of Medical Virology, National Health Commission of the People's Republic of China, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Yanzhi Huang
- Jilin Children's Medical Center, Children's Hospital of Changchun, Changchun, People's Republic of China
| | - Liwei Sun
- Jilin Children's Medical Center, Children's Hospital of Changchun, Changchun, People's Republic of China
| | - Zifeng Yang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Deshan Yu
- Gansu Provincial Centers for Disease Control and Prevention, Lanzhou, People's Republic of China
| | - Pengbo Yu
- Shaanxi Provincial Centers for Disease Control and Prevention, Xian, People's Republic of China
| | - Hong Zhang
- Hunan Provincial Centers for Disease Control and Prevention, Changsha, People's Republic of China
| | - Yan Zhang
- WHO WPRO Regional Reference Measles/Rubella Laboratory and Key Laboratory of Medical Virology, National Health Commission of the People's Republic of China, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing, People's Republic of China.
| | - Wenbo Xu
- WHO WPRO Regional Reference Measles/Rubella Laboratory and Key Laboratory of Medical Virology, National Health Commission of the People's Republic of China, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing, People's Republic of China.
| |
Collapse
|
13
|
Adamczyk A, Kruczak A, Harazin-Lechowska A, Ambicka A, Grela-Wojewoda A, Domagała-Haduch M, Janecka-Widła A, Majchrzyk K, Cichocka A, Ryś J, Niemiec J. Relationship between HER2 gene status and selected potential biological features related to trastuzumab resistance and its influence on survival of breast cancer patients undergoing trastuzumab adjuvant treatment. Onco Targets Ther 2018; 11:4525-4535. [PMID: 30122944 DOI: 10.2147/ott.s166983] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Background The aim of the study was to investigate if parameters associated with human epidermal growth factor receptor type 2 (HER2) status (HER2 gene copy number, HER2/CEP17 ratio or polysomy of chromosome 17) are related to various biological features potentially responsible for trastuzumab resistance (PTEN, IGF-1R, MUC4, EGFR, HER3, HER4, and mutation status of PIK3CA) as well as their influence on survival of HER2-positive breast cancer patients treated with adjuvant chemotherapy and trastuzumab. Patients and methods The investigated group consisted of 117 patients with invasive ductal breast cancer (T≥1, N≥0, M0) with overexpression of HER2, who underwent radical surgery between 2007 and 2014. Status of ER, PR, and HER2 expression was retrieved from patients' files. HER2 gene copy number was investigated by fluorescence in situ hybridization using PathVysion HER-2 DNA Probe Kit II. Expression of PTEN, IGF-1R, MUC4, EGFR, HER3, and HER4 was assessed immunohistochemically on formalin-fixed paraffin-embedded tissue sections. PIK3C mutation status was determined by qPCR analysis. Results Overexpression of HER2 protein (IHC 3+) and ER negativity corresponded to higher HER22 copy number and HER2/CEP17 ratio (.<0.001). Tumors with polysomy were characterized by higher HER22 gene copy number but lower HER2/CEP17p ratio (p<0.026, p<0.001). Patients with tumors featuring HER3 immunonegativity or low HER2/CEP17 ratio (#4) were characterized by 100% metastasis-free survival (.=0.018, p=0.062). Conclusion Presence of both unfavorable factors, ie, HER3 expression and high HER2/CEP17 ratio, allowed to distinguish a group of patients with worse prognosis (.=0.001).
Collapse
Affiliation(s)
| | | | | | | | - Aleksandra Grela-Wojewoda
- Department of Systemic and Generalized Malignancies, Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Cracow Branch, Cracow, Poland
| | - Małgorzata Domagała-Haduch
- Department of Systemic and Generalized Malignancies, Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Cracow Branch, Cracow, Poland
| | | | | | | | | | | |
Collapse
|
14
|
Oltulu P, Küpeli R, Kılınç F, İyisoy M, Esen H, Güngör S, avunduk MC, Tavlı L, Fındık S. COMPARISON OF THE HISTOPATHOLOGICAL AND CLINICAL PROGNOSTIC PARAMETERS IN HUMAN EPİDERMAL GROWTH FAKTÖR 2 (HER2 2) 2+/AMPLIFIED AND HER2 2+/NON-AMPLIFIED GROUPS OF THE CASES WITH INVASIVE BREAST CARCINOMA. KONURALP TIP DERGISI 2018. [DOI: 10.18521/ktd.371467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
15
|
Volpi CC, Gualeni AV, Pietrantonio F, Vaccher E, Carbone A, Gloghini A. Bright-field in situ hybridization detects gene alterations and viral infections useful for personalized management of cancer patients. Expert Rev Mol Diagn 2018; 18:259-277. [PMID: 29431533 DOI: 10.1080/14737159.2018.1440210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Bright-field in situ hybridization (ISH) methods detect gene alterations that may improve diagnostic precision and personalized management of cancer patients. Areas covered: This review focuses on some bright-field ISH techniques for detection of gene amplification or viral infection that have already been introduced in tumor pathology, research and diagnostic practice. Other emerging ISH methods, for the detection of translocation, mRNA and microRNA have recently been developed and need both an optimization and analytical validation. The review also deals with their clinical applications and implications on the management of cancer patients. Expert commentary: The technology of bright-field ISH applications has advanced significantly in the last decade. For example, an automated dual-color assay was developed as a clinical test for selecting cancer patients that are candidates for personalized therapy. Recently an emerging bright-field gene-protein assay has been developed. This method simultaneously detects the protein, gene and centromeric targets in the context of tissue morphology, and might be useful in assessing the HER2 status particularly in equivocal cases or samples with heterogeneous tumors. The application of bright-field ISH methods has become the gold standard for the detection of tumor-associated viral infection as diagnostic or prognostic factors.
Collapse
Affiliation(s)
- Chiara C Volpi
- a Department of Pathology and Laboratory Medicine , Fondazione IRCCS, Istituto Nazionale dei Tumori , Milano , Italy
| | - Ambra V Gualeni
- a Department of Pathology and Laboratory Medicine , Fondazione IRCCS, Istituto Nazionale dei Tumori , Milano , Italy
| | - Filippo Pietrantonio
- b Department of Medical Oncology , Fondazione IRCCS, Istituto Nazionale dei Tumori , Milano , Italy
| | - Emanuela Vaccher
- c Department of Medical Oncology , Centro di Riferimento Oncologico, IRCCS, National Cancer Institute , Aviano , Italy
| | - Antonino Carbone
- d Department of Pathology , Centro di Riferimento Oncologico, IRCCS, National Cancer Institute , Aviano , Italy
| | - Annunziata Gloghini
- a Department of Pathology and Laboratory Medicine , Fondazione IRCCS, Istituto Nazionale dei Tumori , Milano , Italy
| |
Collapse
|
16
|
Rechsteiner M, Dedes K, Fink D, Pestalozzi B, Sobottka B, Moch H, Wild P, Varga Z. Somatic BRCA1 mutations in clinically sporadic breast cancer with medullary histological features. J Cancer Res Clin Oncol 2018; 144:865-874. [PMID: 29453630 PMCID: PMC5916977 DOI: 10.1007/s00432-018-2609-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 02/13/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND The role of somatic BRCA1/2 gene mutations in breast cancer is getting increasing attention in view of hereditary disease. The medullary phenotype and triple negative intrinsic subtypes are often, but not exclusively encountered in BRCA1 germline mutated breast cancer, whilst for BRCA2, no association to specific histological features are known. In this study, we addressed the relationship between morphological medullary phenotype and BRCA1/2 somatic mutations in breast cancer without known positive family anamnesis. METHODS 32 clinically sporadic breast cancers with medullary features were analyzed for somatic BRCA1/2 mutations (all coding exons) with next-generation sequencing technology. Paraffin-embedded formalin-fixed breast cancer samples from all patients were analyzed. RESULTS Three of 32 tumors (9%) had pathogenic (ARUP class-5) BRCA1 gene alterations. Two of these pathogenic variants exhibited deletions leading to frameshift mutations (p.Glu23fs, p.Val1234fs), and the remaining single-nucleotid-variant resulted in premature STOP codon (p.Glu60Ter). In one patient, the same pathogenic BRCA1 mutation was detected (p.Glu23fs) in normal breast tissue. Retrospective follow-up in two patients revealed a positive family history for breast cancer and consecutive germline mutation testing confirmed presence of BRCA1 mutations. No somatic pathogenic BRCA2 mutations were detected. CONCLUSIONS BRCA1 mutation testing may be useful in clinically sporadic breast cancer patients with medullary features to identify potential mutation carriers independently from intrinsic molecular subtype. Formalin-fixed paraffin-embedded cancer tissue can undergo testing within a routine molecular-diagnostic setting as a clinical BRCA1/2 mutation screening strategy.
Collapse
Affiliation(s)
- Markus Rechsteiner
- Department of Pathology and Molecular Pathology, University Hospital Zurich, 8091, Zurich, Switzerland
| | - Konstantin Dedes
- Department of Gynecology, University Hospital Zurich, Zurich, Switzerland
| | - Daniel Fink
- Department of Gynecology, University Hospital Zurich, Zurich, Switzerland
| | | | - Bettina Sobottka
- Department of Pathology and Molecular Pathology, University Hospital Zurich, 8091, Zurich, Switzerland
| | - Holger Moch
- Department of Pathology and Molecular Pathology, University Hospital Zurich, 8091, Zurich, Switzerland
| | - Peter Wild
- Department of Pathology and Molecular Pathology, University Hospital Zurich, 8091, Zurich, Switzerland
| | - Zsuzsanna Varga
- Department of Pathology and Molecular Pathology, University Hospital Zurich, 8091, Zurich, Switzerland.
| |
Collapse
|
17
|
Pehlivanoglu B, Serin G, Yeniay L, Zekioglu O, Gokmen E, Ozdemir N. Comparison of HER2 status determination methods in HER2 (2+) patients: Manual fluorescent in situ hybridization (FISH) vs. dual silver enhanced in situ hybridization (SISH). Ann Diagn Pathol 2017; 31:36-40. [PMID: 29146056 DOI: 10.1016/j.anndiagpath.2017.06.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 06/18/2017] [Accepted: 06/23/2017] [Indexed: 02/08/2023]
Abstract
HER2 amplification has been demonstrated in 15-25% of invasive breast carcinomas and can be assessed using immunohistochemical and in situ hybridization methods. Here, we compared the accuracy of dual SISH to manual FISH in HER2 (2+) breast carcinoma and evaluated the feasibility of dual SISH method in routine practice. Sixty HER2 (2+) consecutive tumor samples diagnosed between January 2009 and February 2013 were selected. Demographic, histological and immunohistochemical features and FISH results were recruited from patient records and compared to dual SISH results. Nine (15%) of the 60 tumor samples were excluded from statistical analysis due to lack of interpretable SISH signals. HER2 staining percentages by immunohistochemistry differed between 20 and 80%. HER2 amplification was shown in 7 (13.7%) and 8 (15.7%) patients by FISH and SISH, respectively. Very good agreement was observed between FISH and SISH methods (kappa value: 0.92). Significant correlation was found between HER2 staining percentage and FISH positivity, in contrast to SISH positivity (p=0.012 vs. p=0.069). Our results are consistent with previously reported literature, indicating SISH can be used to determine HER2 status. However, preanalytical and analytical problems may cause inadequate or uncountable signals, making interpretation impossible for the pathologist and highlighting the importance of standardization and quality control programs.
Collapse
Affiliation(s)
- Burcin Pehlivanoglu
- Ege University, Faculty of Medicine, Department of Pathology, Izmir, Turkey.
| | - Gurdeniz Serin
- Ege University, Faculty of Medicine, Department of Pathology, Izmir, Turkey
| | - Levent Yeniay
- Ege University, Department of General Surgery, Izmir, Turkey
| | - Osman Zekioglu
- Ege University, Faculty of Medicine, Department of Pathology, Izmir, Turkey
| | - Erhan Gokmen
- Ege University, Department of Medical Oncology, Izmir, Turkey
| | - Necmettin Ozdemir
- Ege University, Faculty of Medicine, Department of Pathology, Izmir, Turkey
| |
Collapse
|
18
|
Britschgi A, Duss S, Kim S, Couto JP, Brinkhaus H, Koren S, De Silva D, Mertz KD, Kaup D, Varga Z, Voshol H, Vissieres A, Leroy C, Roloff T, Stadler MB, Scheel CH, Miraglia LJ, Orth AP, Bonamy GMC, Reddy VA, Bentires-Alj M. The Hippo kinases LATS1 and 2 control human breast cell fate via crosstalk with ERα. Nature 2017; 541:541-545. [PMID: 28068668 DOI: 10.1038/nature20829] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 11/24/2016] [Indexed: 01/06/2023]
Abstract
Cell fate perturbations underlie many human diseases, including breast cancer. Unfortunately, the mechanisms by which breast cell fate are regulated are largely unknown. The mammary gland epithelium consists of differentiated luminal epithelial and basal myoepithelial cells, as well as undifferentiated stem cells and more restricted progenitors. Breast cancer originates from this epithelium, but the molecular mechanisms that underlie breast epithelial hierarchy remain ill-defined. Here, we use a high-content confocal image-based short hairpin RNA screen to identify tumour suppressors that regulate breast cell fate in primary human breast epithelial cells. We show that ablation of the large tumour suppressor kinases (LATS) 1 and 2 (refs 5, 6), which are part of the Hippo pathway, promotes the luminal phenotype and increases the number of bipotent and luminal progenitors, the proposed cells-of-origin of most human breast cancers. Mechanistically, we have identified a direct interaction between Hippo and oestrogen receptor-α (ERα) signalling. In the presence of LATS, ERα was targeted for ubiquitination and Ddb1-cullin4-associated-factor 1 (DCAF1)-dependent proteasomal degradation. Absence of LATS stabilized ERα and the Hippo effectors YAP and TAZ (hereafter YAP/TAZ), which together control breast cell fate through intrinsic and paracrine mechanisms. Our findings reveal a non-canonical (that is, YAP/TAZ-independent) effect of LATS in the regulation of human breast cell fate.
Collapse
Affiliation(s)
- Adrian Britschgi
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland
| | - Stephan Duss
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland
| | - Sungeun Kim
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, USA
| | - Joana Pinto Couto
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland.,Department of Biomedicine, University of Basel, University Hospital Basel, 4031 Basel, Switzerland
| | - Heike Brinkhaus
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland
| | - Shany Koren
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland.,Department of Biomedicine, University of Basel, University Hospital Basel, 4031 Basel, Switzerland
| | - Duvini De Silva
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland.,Department of Biomedicine, University of Basel, University Hospital Basel, 4031 Basel, Switzerland
| | - Kirsten D Mertz
- Institute of Pathology Liestal, Cantonal Hospital Baselland, 4410 Liestal, Switzerland
| | - Daniela Kaup
- Institute of Pathology Liestal, Cantonal Hospital Baselland, 4410 Liestal, Switzerland
| | - Zsuzsanna Varga
- Institute of Surgical Pathology, University Hospital Zurich, 8091 Zurich, Switzerland
| | - Hans Voshol
- Novartis Institutes for Biomedical Research, 4058 Basel, Switzerland
| | | | - Cedric Leroy
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland.,Novartis Institutes for Biomedical Research, 4058 Basel, Switzerland
| | - Tim Roloff
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland
| | - Michael B Stadler
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland.,Swiss Institute of Bioinformatics, 4058 Basel, Switzerland
| | - Christina H Scheel
- Institute of Stem Cell Research, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Loren J Miraglia
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, USA
| | - Anthony P Orth
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, USA
| | - Ghislain M C Bonamy
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, USA
| | - Venkateshwar A Reddy
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, USA
| | - Mohamed Bentires-Alj
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland.,Department of Biomedicine, University of Basel, University Hospital Basel, 4031 Basel, Switzerland
| |
Collapse
|
19
|
Meehan K, Clynick B, Mirzai B, Maslen P, Harvey JM, Erber WN. HER2 mRNA transcript quantitation in breast cancer. Clin Transl Oncol 2016; 19:606-615. [PMID: 27837339 DOI: 10.1007/s12094-016-1573-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 10/31/2016] [Indexed: 12/15/2022]
Abstract
PURPOSE The human epidermal growth factor receptor 2 (HER2) status in breast cancer is important for prognostic prediction and the determination of optimal treatment. Current methods rely on protein expression, as determined by immunohistochemistry (IHC), as well as gene amplification as determined by in situ hybridisation (ISH). We explored whether quantitative droplet digital PCR (ddPCR) can be used for the detection and absolute quantitation of HER2 mRNA. METHODS Digital droplet PCR (ddPCR) was performed for HER2 mRNA on 178 formalin-fixed paraffin-embedded (FFPE) breast cancer specimens. HER2 positive, equivocal and negative cases as defined by standard criteria were included and both core biopsies and tissue sections were assessed. RESULTS HER2 positive cases contained significantly higher levels of HER2 mRNA (169-1,000,000 copies/µl) by ddPCR compared with equivocal (112-139 copies/µl, p = 0.025) and negative cases (6.2-644 copies/µl. p < 0.001). A continuum of transcript quantity was observed but a cutoff of 490 copies/µl distinguished between HER2 positive and negative cases. Results were consistent between core biopsy and tissue sections. CONCLUSIONS ddPCR can be used to quantify HER2 mRNA transcripts in FFPE breast cancer specimens. Our results highlight the potential of ddPCR on FFPE tissue to be used to accurately quantify HER2 transcripts. Validation in large cohorts will be required to determine a clinically applicable cutoff.
Collapse
Affiliation(s)
- K Meehan
- School of Pathology and Laboratory Medicine (M504), University of Western Australia, Crawley, WA, 6009, Australia.
| | - B Clynick
- School of Pathology and Laboratory Medicine (M504), University of Western Australia, Crawley, WA, 6009, Australia
| | - B Mirzai
- School of Pathology and Laboratory Medicine (M504), University of Western Australia, Crawley, WA, 6009, Australia
- PathWest Laboratory Medicine, Queen Elizabeth II Medical Centre, Nedlands, WA, 6009, Australia
| | - P Maslen
- School of Pathology and Laboratory Medicine (M504), University of Western Australia, Crawley, WA, 6009, Australia
| | - J M Harvey
- School of Pathology and Laboratory Medicine (M504), University of Western Australia, Crawley, WA, 6009, Australia
- PathWest Laboratory Medicine, Queen Elizabeth II Medical Centre, Nedlands, WA, 6009, Australia
| | - W N Erber
- School of Pathology and Laboratory Medicine (M504), University of Western Australia, Crawley, WA, 6009, Australia
- PathWest Laboratory Medicine, Queen Elizabeth II Medical Centre, Nedlands, WA, 6009, Australia
| |
Collapse
|
20
|
Nitta H, Kelly BD, Allred C, Jewell S, Banks P, Dennis E, Grogan TM. The assessment of HER2 status in breast cancer: the past, the present, and the future. Pathol Int 2016; 66:313-24. [DOI: 10.1111/pin.12407] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 01/28/2016] [Accepted: 03/09/2016] [Indexed: 01/25/2023]
Affiliation(s)
- Hiroaki Nitta
- Medical & Scientific Affairs and Technology & Applied Research, Ventana Medical Systems, Inc. Tucson Arizona USA
| | - Brian D. Kelly
- Technology & Applied Research, Ventana Medical Systems, Inc. Tucson Arizona USA
| | - Craig Allred
- Medical & Scientific Affairs and Technology & Applied Research, Ventana Medical Systems, Inc. Tucson Arizona USA
| | - Suzan Jewell
- Medical & Scientific Affairs and Technology & Applied Research, Ventana Medical Systems, Inc. Tucson Arizona USA
| | - Peter Banks
- Medical & Scientific Affairs and Technology & Applied Research, Ventana Medical Systems, Inc. Tucson Arizona USA
| | - Eslie Dennis
- Medical & Scientific Affairs and Technology & Applied Research, Ventana Medical Systems, Inc. Tucson Arizona USA
| | - Thomas M. Grogan
- Medical & Scientific Affairs and Technology & Applied Research, Ventana Medical Systems, Inc. Tucson Arizona USA
| |
Collapse
|
21
|
Matos A, Santos A. Advances in the understanding of the clinically relevant genetic pathways and molecular aspects of canine mammary tumours: Part 1. Proliferation, apoptosis and DNA repair. Vet J 2015; 205:136-43. [DOI: 10.1016/j.tvjl.2015.02.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 02/03/2015] [Accepted: 02/04/2015] [Indexed: 02/09/2023]
|