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Piha-Paul SA, Tseng C, Leung CH, Yuan Y, Karp DD, Subbiah V, Hong D, Fu S, Naing A, Rodon J, Javle M, Ajani JA, Raghav KP, Somaiah N, Mills GB, Tsimberidou AM, Zheng X, Chen K, Meric-Bernstam F. Phase II study of talazoparib in advanced cancers with BRCA1/2, DNA repair, and PTEN alterations. NPJ Precis Oncol 2024; 8:166. [PMID: 39085400 PMCID: PMC11291882 DOI: 10.1038/s41698-024-00634-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 07/09/2024] [Indexed: 08/02/2024] Open
Abstract
Cancer cells with BRCA1/2 deficiencies are sensitive to poly (ADP-ribose) polymerase (PARP) inhibitors. We evaluated the efficacy of talazoparib in DNA-Damage Repair (DDR)-altered patients. In this phase II trial, patients were enrolled onto one of four cohorts based on molecular alterations: (1) somatic BRCA1/2, (2) other homologous recombination repair pathway, (3) PTEN and (4) germline BRCA1/2. The primary endpoint was a clinical benefit rate (CBR): complete response, partial response or stable disease ≥24 weeks. 79 patients with a median of 4 lines of therapy were enrolled. CBR for cohorts 1-4 were: 32.5%, 19.7%, 9.4% and 30.6%, respectively. PTEN mutations correlated with reduced survival and a trend towards shorter time to progression.Talazoparib demonstrated clinical benefit in selected DDR-altered patients. PTEN mutations/loss patients derived limited clinical benefit. Further study is needed to determine whether PTEN is prognostic or predictive of response to PARP inhibitors.
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Affiliation(s)
- Sarina A Piha-Paul
- Department of Investigational Cancer Therapeutics (A Phase I Clinical Trials Program), University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Chieh Tseng
- Department of Investigational Cancer Therapeutics (A Phase I Clinical Trials Program), University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Cheuk Hong Leung
- Department of Biostatistics, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ying Yuan
- Department of Biostatistics, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Daniel D Karp
- Department of Investigational Cancer Therapeutics (A Phase I Clinical Trials Program), University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Vivek Subbiah
- Department of Investigational Cancer Therapeutics (A Phase I Clinical Trials Program), University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - David Hong
- Department of Investigational Cancer Therapeutics (A Phase I Clinical Trials Program), University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Siqing Fu
- Department of Investigational Cancer Therapeutics (A Phase I Clinical Trials Program), University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Aung Naing
- Department of Investigational Cancer Therapeutics (A Phase I Clinical Trials Program), University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jordi Rodon
- Department of Investigational Cancer Therapeutics (A Phase I Clinical Trials Program), University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Milind Javle
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Kanwal P Raghav
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Neeta Somaiah
- Department of Sarcoma Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Gordon B Mills
- Knight Cancer Institute, Oregon Health Sciences University, Portland, OR, USA
| | - Apostolia M Tsimberidou
- Department of Investigational Cancer Therapeutics (A Phase I Clinical Trials Program), University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Xiaofeng Zheng
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ken Chen
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Funda Meric-Bernstam
- Department of Investigational Cancer Therapeutics (A Phase I Clinical Trials Program), University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Breast Surgical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
- The Sheikh Khalifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Beccari S, Mohamed E, Voong V, Hilz S, Lafontaine M, Shai A, Lim Y, Martinez J, Switzman B, Yu RL, Lupo JM, Chang EF, Hervey-Jumper SL, Berger MS, Costello JF, Phillips JJ. Quantitative Assessment of Preanalytic Variables on Clinical Evaluation of PI3/AKT/mTOR Signaling Activity in Diffuse Glioma. Mod Pathol 2024; 37:100488. [PMID: 38588881 DOI: 10.1016/j.modpat.2024.100488] [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: 10/31/2023] [Revised: 03/08/2024] [Accepted: 03/30/2024] [Indexed: 04/10/2024]
Abstract
Biomarker-driven therapeutic clinical trials require the implementation of standardized, evidence-based practices for sample collection. In diffuse glioma, phosphatidylinositol 3 (PI3)-kinase/AKT/mTOR (PI3/AKT/mTOR) signaling is an attractive therapeutic target for which window-of-opportunity clinical trials could facilitate the identification of promising new agents. Yet, the relevant preanalytic variables and optimal tumor sampling methods necessary to measure pathway activity are unknown. To address this, we used a murine model for isocitrate dehydrogenase (IDH)-wildtype glioblastoma (GBM) and human tumor tissue, including IDH-wildtype GBM and IDH-mutant diffuse glioma. First, we determined the impact of delayed time-to-formalin fixation, or cold ischemia time (CIT), on the quantitative assessment of cellular expression of 6 phosphoproteins that are readouts of PI3K/AK/mTOR activity (phosphorylated-proline-rich Akt substrate of 40 kDa (p-PRAS40, T246), -mechanistic target of rapamycin (p-mTOR; S2448); -AKT (p-AKT, S473); -ribosomal protein S6 (p-RPS6, S240/244 and S235/236), and -eukaryotic initiation factor 4E-binding protein 1 (p-4EBP1, T37/46). With CITs ≥ 2 hours, typical of routine clinical handling, all had reduced or altered expression with p-RPS6 (S240/244) exhibiting relatively greater stability. A similar pattern was observed using patient tumor samples from the operating room with p-4EBP1 more sensitive to delayed fixation than p-RPS6 (S240/244). Many clinical trials utilize unstained slides for biomarker evaluation. Thus, we evaluated the impact of slide storage conditions on the detection of p-RPS6 (S240/244), p-4EBP1, and p-AKT. After 5 months, storage at -80°C was required to preserve the expression of p-4EBP1 and p-AKT, whereas p-RPS6 (240/244) expression was not stable regardless of storage temperature. Biomarker heterogeneity impacts optimal tumor sampling. Quantification of p-RPS6 (240/244) expression in multiple regionally distinct human tumor samples from 8 patients revealed significant intratumoral heterogeneity. Thus, the accurate assessment of PI3K/AKT/mTOR signaling in diffuse glioma must overcome intratumoral heterogeneity and multiple preanalytic factors, including time-to-formalin fixation, slide storage conditions, and phosphoprotein of interest.
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Affiliation(s)
- Sol Beccari
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Esraa Mohamed
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Viva Voong
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Stephanie Hilz
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Marisa Lafontaine
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California
| | - Anny Shai
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Yunita Lim
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Jerry Martinez
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Benjamin Switzman
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Ryon L Yu
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Janine M Lupo
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California
| | - Edward F Chang
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Shawn L Hervey-Jumper
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Mitchel S Berger
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Joseph F Costello
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Joanna J Phillips
- Department of Neurological Surgery, University of California, San Francisco, California; Neuropathology Division, Department of Pathology, University of California, San Francisco, California.
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3
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Martell K, McIntyre JB, Abedin T, Kornaga EN, Chan AMY, Enwere E, Köbel M, Dean ML, Phan T, Ghatage P, Lees-Miller SP, Doll CM. Prevalence and Prognostic Significance of PIK3CA Mutation and CNV Status and Phosphorylated AKT Expression in Patients With Cervical Cancer Treated With Primary Surgery. Int J Gynecol Pathol 2024; 43:158-170. [PMID: 37668363 DOI: 10.1097/pgp.0000000000000978] [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: 09/06/2023]
Abstract
Currently, there are limited and conflicting reports on the prognostic utility of PIK3CA and associated pathway markers for cervical cancers treated with primary surgical management. Moreover, current studies are lacking complete characterization of adjuvant treatment with RT and/or chemotherapy. We aimed to document the prevalence, clinicopathologic, adjuvant treatment details, and prognostic value of PI3K/AKT pathway mutations and copy number variation and phosphorylated AKT status in patients with cervical cancers treated with primary surgery. A clinicopathologic review was performed on a retrospective cohort of 185 patients with cervical cancer, treated with primary surgery at a single tertiary institution. Next-generation sequencing and digital PCR was used to determine PI3K/AKT pathway mutational status and PIK3CA copy number variation, respectively, and fluorescent immunohistochemistry measured phosphorylated AKT expression. In all, 179 of 185 (96.8%) of tumors were successfully sequenced; 48 (26.8%) were positive for PI3K/AKT pathway mutations-the majority (n=37, 77.1%) PIK3CA mutations. PIK3CA mutation was associated with pathologically positive lymph nodes [12 (32%) vs. 22 (16%); P =0.022] and indication for postoperative chemoradiotherapy [17 (45.9%) vs. 32 (22.5%); P =0.004]. On multivariable analysis, PIK3CA status was not associated with overall survival ( P =0.103) or progression-free survival ( P =0.240) at 5 yrs, nor was PIK3CA copy number variation status. phosphorylated AKT ≤ median significantly predicted for progression-free survival [multivariable hazard ratio 0.39 (0.17-0.89; P =0.025)] but not overall survival ( P =0.087). The correlation of PIK3CA with pathologic positive lymph node status yet lack of association with survival outcomes may be due to the use of adjuvant postoperative therapy. PIK3CA assessment before radical hysterectomy may help identify patients with a higher risk of node-positive disease.
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Gobena S, Admassu B, Kinde MZ, Gessese AT. Proteomics and Its Current Application in Biomedical Area: Concise Review. ScientificWorldJournal 2024; 2024:4454744. [PMID: 38404932 PMCID: PMC10894052 DOI: 10.1155/2024/4454744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/09/2024] [Accepted: 02/13/2024] [Indexed: 02/27/2024] Open
Abstract
Biomedical researchers tirelessly seek cutting-edge technologies to advance disease diagnosis, drug discovery, and therapeutic interventions, all aimed at enhancing human and animal well-being. Within this realm, proteomics stands out as a pivotal technology, focusing on extensive studies of protein composition, structure, function, and interactions. Proteomics, with its subdivisions of expression, structural, and functional proteomics, plays a crucial role in unraveling the complexities of biological systems. Various sophisticated techniques are employed in proteomics, including polyacrylamide gel electrophoresis, mass spectrometry analysis, NMR spectroscopy, protein microarray, X-ray crystallography, and Edman sequencing. These methods collectively contribute to the comprehensive understanding of proteins and their roles in health and disease. In the biomedical field, proteomics finds widespread application in cancer research and diagnosis, stem cell studies, and the diagnosis and research of both infectious and noninfectious diseases. In addition, it plays a pivotal role in drug discovery and the emerging frontier of personalized medicine. The versatility of proteomics allows researchers to delve into the intricacies of molecular mechanisms, paving the way for innovative therapeutic approaches. As infectious and noninfectious diseases continue to emerge and the field of biomedical research expands, the significance of proteomics becomes increasingly evident. Keeping abreast of the latest developments in proteomics applications becomes paramount for the development of therapeutics, translational research, and study of diverse diseases. This review aims to provide a comprehensive overview of proteomics, offering a concise outline of its current applications in the biomedical domain. By doing so, it seeks to contribute to the understanding and advancement of proteomics, emphasizing its pivotal role in shaping the future of biomedical research and therapeutic interventions.
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Affiliation(s)
- Semira Gobena
- College of Veterinary Medicine and Animal Sciences, University of Gondar, Gondar, Ethiopia
| | - Bemrew Admassu
- Department of Veterinary Biomedical Sciences, College of Veterinary Medicine and Animal Sciences, University of Gondar, Gondar, Ethiopia
| | - Mebrie Zemene Kinde
- Department of Veterinary Biomedical Sciences, College of Veterinary Medicine and Animal Sciences, University of Gondar, Gondar, Ethiopia
| | - Abebe Tesfaye Gessese
- Department of Veterinary Biomedical Sciences, College of Veterinary Medicine and Animal Sciences, University of Gondar, Gondar, Ethiopia
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5
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Wani S, Humaira, Farooq I, Ali S, Rehman MU, Arafah A. Proteomic profiling and its applications in cancer research. Proteomics 2023. [DOI: 10.1016/b978-0-323-95072-5.00015-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
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6
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Cancer proteomics: An overview. Proteomics 2023. [DOI: 10.1016/b978-0-323-95072-5.00009-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
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7
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Firdous P, Hassan T, Farooq S, Nissar K. Applications of proteomics in cancer diagnosis. Proteomics 2023. [DOI: 10.1016/b978-0-323-95072-5.00014-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
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Pairawan S, Akcakanat A, Kopetz S, Tapia C, Zheng X, Chen H, Ha MJ, Rizvi Y, Holla V, Wang J, Evans KW, Zhao M, Busaidy N, Fang B, Roth JA, Dumbrava EI, Meric-Bernstam F. Combined MEK/MDM2 inhibition demonstrates antitumor efficacy in TP53 wild-type thyroid and colorectal cancers with MAPK alterations. Sci Rep 2022; 12:1248. [PMID: 35075200 PMCID: PMC8786858 DOI: 10.1038/s41598-022-05193-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 12/14/2021] [Indexed: 11/08/2022] Open
Abstract
Most tumors with activating MAPK (mitogen-activated protein kinase) pathway alterations respond poorly to MEK inhibitors alone. Here, we evaluated combination therapy with MEK inhibitor selumetinib and MDM2 inhibitor KRT-232 in TP53 wild-type and MAPK altered colon and thyroid cancer models. In vitro, we showed synergy between selumetinib and KRT-232 on cell proliferation and colony formation assays. Immunoblotting confirmed p53 upregulation and MEK pathway inhibition. The combination was tested in vivo in seven patient-derived xenograft (PDX) models (five colorectal carcinoma and two papillary thyroid carcinoma models) with different KRAS, BRAF, and NRAS mutations. Combination therapy significantly prolonged event-free survival compared with monotherapy in six of seven models tested. Reverse-phase protein arrays and immunohistochemistry, respectively, demonstrated upregulation of the p53 pathway and in two models cleaved caspase 3 with combination therapy. In summary, combined inhibition of MEK and MDM2 upregulated p53 expression, inhibited MAPK signaling and demonstrated greater antitumor efficacy than single drug therapy in both in vitro and in vivo settings. These findings support further clinical testing of the MEK/MDM2 inhibitor combination in tumors of epithelial origin with MAPK pathway alterations.
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Affiliation(s)
- Seyed Pairawan
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Argun Akcakanat
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Scott Kopetz
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Coya Tapia
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Epizyme Inc., Boston, USA
| | - Xiaofeng Zheng
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Huiqin Chen
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Min Jin Ha
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Yasmeen Rizvi
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Vijaykumar Holla
- Sheikh Khalifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jing Wang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Kurt W Evans
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Ming Zhao
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Naifa Busaidy
- Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Bingliang Fang
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jack A Roth
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Ecaterina Ileana Dumbrava
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Funda Meric-Bernstam
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
- Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1400 Holcombe Blvd, FC8.3044, Houston, TX, 77030, USA.
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Al-Amrani S, Al-Jabri Z, Al-Zaabi A, Alshekaili J, Al-Khabori M. Proteomics: Concepts and applications in human medicine. World J Biol Chem 2021; 12:57-69. [PMID: 34630910 PMCID: PMC8473418 DOI: 10.4331/wjbc.v12.i5.57] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/04/2021] [Accepted: 07/15/2021] [Indexed: 02/06/2023] Open
Abstract
Proteomics is the complete evaluation of the function and structure of proteins to understand an organism’s nature. Mass spectrometry is an essential tool that is used for profiling proteins in the cell. However, biomarker discovery remains the major challenge of proteomics because of their complexity and dynamicity. Therefore, combining the proteomics approach with genomics and bioinformatics will provide an understanding of the information of biological systems and their disease alteration. However, most studies have investigated a small part of the proteins in the blood. This review highlights the types of proteomics, the available proteomic techniques, and their applications in different research fields.
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Affiliation(s)
- Safa Al-Amrani
- Department of Microbiology and Immunology, Sultan Qaboos University, Muscat 123, Oman
| | - Zaaima Al-Jabri
- Department of Microbiology and Immunology, Sultan Qaboos University, Muscat 123, Oman
| | - Adhari Al-Zaabi
- Department of Human and Clinical Anatomy, Sultan Qaboos University, Muscat 123, Oman
| | - Jalila Alshekaili
- Department of Microbiology and Immunology, Sultan Qaboos University Hospital, Muscat 123, Oman
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Akcakanat A, Zheng X, Cruz Pico CX, Kim TB, Chen K, Korkut A, Sahin A, Holla V, Tarco E, Singh G, Damodaran S, Mills GB, Gonzalez-Angulo AM, Meric-Bernstam F. Genomic, Transcriptomic, and Proteomic Profiling of Metastatic Breast Cancer. Clin Cancer Res 2021; 27:3243-3252. [PMID: 33782032 PMCID: PMC8172429 DOI: 10.1158/1078-0432.ccr-20-4048] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/10/2020] [Accepted: 03/26/2021] [Indexed: 12/28/2022]
Abstract
PURPOSE Metastatic breast cancer (MBC) is not curable and there is a growing interest in personalized therapy options. Here we report molecular profiling of MBC focusing on molecular evolution in actionable alterations. EXPERIMENTAL DESIGN Sixty-two patients with MBC were included. An analysis of DNA, RNA, and functional proteomics was done, and matched primary and metastatic tumors were compared when feasible. RESULTS Targeted exome sequencing of 41 tumors identified common alterations in TP53 (21; 51%) and PIK3CA (20; 49%), as well as alterations in several emerging biomarkers such as NF1 mutations/deletions (6; 15%), PTEN mutations (4; 10%), and ARID1A mutations/deletions (6; 15%). Among 27 hormone receptor-positive patients, we identified MDM2 amplifications (3; 11%), FGFR1 amplifications (5; 19%), ATM mutations (2; 7%), and ESR1 mutations (4; 15%). In 10 patients with matched primary and metastatic tumors that underwent targeted exome sequencing, discordances in actionable alterations were common, including NF1 loss in 3 patients, loss of PIK3CA mutation in 1 patient, and acquired ESR1 mutations in 3 patients. RNA sequencing in matched samples confirmed loss of NF1 expression with genomic NF1 loss. Among 33 patients with matched primary and metastatic samples that underwent RNA profiling, 14 actionable genes were differentially expressed, including antibody-drug conjugate targets LIV-1 and B7-H3. CONCLUSIONS Molecular profiling in MBC reveals multiple common as well as less frequent but potentially actionable alterations. Genomic and transcriptional profiling demonstrates intertumoral heterogeneity and potential evolution of actionable targets with tumor progression. Further work is needed to optimize testing and integrated analysis for treatment selection.
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Affiliation(s)
- Argun Akcakanat
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xiaofeng Zheng
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Christian X Cruz Pico
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Tae-Beom Kim
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ken Chen
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Anil Korkut
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Aysegul Sahin
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Vijaykumar Holla
- Sheikh Khalifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Emily Tarco
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Gopal Singh
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Senthil Damodaran
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Gordon B Mills
- Department of Cell, Developmental and Cancer Biology, Department of Medicine, Oregon Health and Science University, Portland, Oregon
- Precision Oncology, Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
| | - Ana Maria Gonzalez-Angulo
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Funda Meric-Bernstam
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas.
- Sheikh Khalifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, Texas
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
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11
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Garrido-Castro AC, Saura C, Barroso-Sousa R, Guo H, Ciruelos E, Bermejo B, Gavilá J, Serra V, Prat A, Paré L, Céliz P, Villagrasa P, Li Y, Savoie J, Xu Z, Arteaga CL, Krop IE, Solit DB, Mills GB, Cantley LC, Winer EP, Lin NU, Rodon J. Phase 2 study of buparlisib (BKM120), a pan-class I PI3K inhibitor, in patients with metastatic triple-negative breast cancer. Breast Cancer Res 2020; 22:120. [PMID: 33138866 PMCID: PMC7607628 DOI: 10.1186/s13058-020-01354-y] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 10/11/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Treatment options for triple-negative breast cancer remain limited. Activation of the PI3K pathway via loss of PTEN and/or INPP4B is common. Buparlisib is an orally bioavailable, pan-class I PI3K inhibitor. We evaluated the safety and efficacy of buparlisib in patients with metastatic triple-negative breast cancer. METHODS This was a single-arm phase 2 study enrolling patients with triple-negative metastatic breast cancer. Patients were treated with buparlisib at a starting dose of 100 mg daily. The primary endpoint was clinical benefit, defined as confirmed complete response (CR), partial response (PR), or stable disease (SD) for ≥ 4 months, per RECIST 1.1. Secondary endpoints included progression-free survival (PFS), overall survival (OS), and toxicity. A subset of patients underwent pre- and on-treatment tumor tissue biopsies for correlative studies. RESULTS Fifty patients were enrolled. Median number of cycles was 2 (range 1-10). The clinical benefit rate was 12% (6 patients, all SD ≥ 4 months). Median PFS was 1.8 months (95% confidence interval [CI] 1.6-2.3). Median OS was 11.2 months (95% CI 6.2-25). The most frequent adverse events were fatigue (58% all grades, 8% grade 3), nausea (34% all grades, none grade 3), hyperglycemia (34% all grades, 4% grade 3), and anorexia (30% all grades, 2% grade 3). Eighteen percent of patients experienced depression (12% grade 1, 6% grade 2) and anxiety (10% grade 1, 8% grade 2). Alterations in PIK3CA/AKT1/PTEN were present in 6/27 patients with available targeted DNA sequencing (MSK-IMPACT), 3 of whom achieved SD as best overall response though none with clinical benefit ≥ 4 months. Of five patients with paired baseline and on-treatment biopsies, reverse phase protein arrays (RPPA) analysis demonstrated reduction of S6 phosphorylation in 2 of 3 patients who achieved SD, and in none of the patients with progressive disease. CONCLUSIONS Buparlisib was associated with prolonged SD in a very small subset of patients with triple-negative breast cancer; however, no confirmed objective responses were observed. Downmodulation of key nodes in the PI3K pathway was observed in patients who achieved SD. PI3K pathway inhibition alone may be insufficient as a therapeutic strategy for triple-negative breast cancer. TRIAL REGISTRATION NCT01790932 . Registered on 13 February 2013; NCT01629615 . Registered on 27 June 2012.
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Affiliation(s)
- Ana C Garrido-Castro
- Department of Medical Oncology, Susan F. Smith Center for Women's Cancers, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Boston, MA, 02215, USA
| | - Cristina Saura
- Department of Medical Oncology, Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona, Barcelona, Spain
- Vall d'Hebron Institute of Oncology, VHIO, Barcelona, Spain
- SOLTI Breast Cancer Research Group, Barcelona, Spain
| | - Romualdo Barroso-Sousa
- Department of Medical Oncology, Susan F. Smith Center for Women's Cancers, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Boston, MA, 02215, USA
- Present Address: Hospital Sírio-Libanês, Brasilia, Brazil
| | - Hao Guo
- Division of Biostatistics, Department of Data Sciences, Dana-Farber Cancer Institute, Boston, MA, USA
| | | | - Begoña Bermejo
- Clinic University Hospital, INCLIVA Biomedical Research Institute, CIBERONC-ISCIII, Valencia, Spain
| | - Joaquin Gavilá
- Fundación Instituto Valenciano De Oncología, Valencia, Spain
| | - Violeta Serra
- Experimental Therapeutics Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Aleix Prat
- Department of Medical Oncology, Translational Genomics and Targeted Therapeutics in Solid Tumors, IDIBAPS, Hospital Clínic of Barcelona, Barcelona, Spain
| | - Laia Paré
- SOLTI Breast Cancer Research Group, Barcelona, Spain
| | - Pamela Céliz
- SOLTI Breast Cancer Research Group, Barcelona, Spain
| | | | - Yisheng Li
- Department of Biostatistics, Division of Basic Sciences, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jennifer Savoie
- Department of Medical Oncology, Susan F. Smith Center for Women's Cancers, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Boston, MA, 02215, USA
| | - Zhan Xu
- School of Communication, Northern Arizona University, Flagstaff, AZ, USA
| | - Carlos L Arteaga
- Harold C. Simmons Comprehensive Cancer Center, UT Southwestern Medical Center, Dallas, TX, USA
| | - Ian E Krop
- Department of Medical Oncology, Susan F. Smith Center for Women's Cancers, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Boston, MA, 02215, USA
| | - David B Solit
- Kravis Center for Molecular Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Gordon B Mills
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
- Present Address: Division of Basic Science Research, Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lewis C Cantley
- Sandra and Edward Meyer Cancer Center, Weill Cornell Medical College, New York, NY, USA
| | - Eric P Winer
- Department of Medical Oncology, Susan F. Smith Center for Women's Cancers, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Boston, MA, 02215, USA
| | - Nancy U Lin
- Department of Medical Oncology, Susan F. Smith Center for Women's Cancers, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Boston, MA, 02215, USA.
| | - Jordi Rodon
- Department of Medical Oncology, Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona, Barcelona, Spain
- SOLTI Breast Cancer Research Group, Barcelona, Spain
- Present Address: Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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12
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Sreekumar S, Levine KM, Sikora MJ, Chen J, Tasdemir N, Carter D, Dabbs DJ, Meier C, Basudan A, Boone D, McAuliffe PF, Jankowitz RC, Lee AV, Atkinson JM, Oesterreich S. Differential Regulation and Targeting of Estrogen Receptor α Turnover in Invasive Lobular Breast Carcinoma. Endocrinology 2020; 161:bqaa109. [PMID: 32609836 PMCID: PMC7438704 DOI: 10.1210/endocr/bqaa109] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 06/27/2020] [Indexed: 02/08/2023]
Abstract
Invasive lobular breast carcinoma (ILC) accounts for 10% to 15% of breast cancers diagnosed annually. Evidence suggests that some aspects of endocrine treatment response might differ between invasive ductal carcinoma (IDC) and ILC, and that patients with ILC have worse long-term survival. We analyzed The Cancer Genome Atlas dataset and observed lower levels of ESR1 mRNA (P = 0.002) and ERα protein (P = 0.038) in ER+ ILC (n = 137) compared to IDC (n = 554), and further confirmed the mRNA difference in a local UPMC cohort (ILC, n = 143; IDC, n = 877; P < 0.005). In both datasets, the correlation between ESR1 mRNA and ERα protein was weaker in ILC, suggesting differential post-transcriptional regulation of ERα. In vitro, 17β-estradiol (E2) decreased the rate of degradation and increased the half-life of ERα in ILC cell lines, whereas the opposite was observed in IDC cell lines. Further, E2 failed to induce robust ubiquitination of ERα in ILC cells. To determine the potential clinical relevance of these findings, we evaluated the effect of 2 selective estrogen receptor downregulators (SERDs), ICI 182,780 and AZD9496, on ERα turnover and cell growth. While ICI 182,780 and AZD9496 showed similar effects in IDC cells, in ILC cell lines, AZD9496 was not as effective as ICI 182,780 in decreasing ERα stability and E2-induced proliferation. Furthermore, AZD9496 exhibited partial agonist activity in growth assays in ILC cell lines. Our study provides evidence for a distinct ERα regulation by SERDs in ILC cell lines, and therefore it is important to include ILC models into preclinical and clinical testing of novel SERDs.
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MESH Headings
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/metabolism
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Lobular/genetics
- Carcinoma, Lobular/metabolism
- Carcinoma, Lobular/pathology
- Cell Line, Tumor
- Estradiol/pharmacology
- Estrogen Receptor alpha/genetics
- Estrogen Receptor alpha/metabolism
- Female
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- MCF-7 Cells
- Neoplasm Invasiveness
- Protein Processing, Post-Translational/drug effects
- Proteolysis/drug effects
- Ubiquitination/drug effects
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Affiliation(s)
- Sreeja Sreekumar
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Kevin M Levine
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania
- Department of Medicine, University of Washington, Seattle, Washington DC
| | - Matthew J Sikora
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Jian Chen
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
| | - Nilgun Tasdemir
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Dorothy Carter
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - David J Dabbs
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Carolin Meier
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Technische Universität, Dresden, Germany
| | - Ahmed Basudan
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania
- Department of Clinical Laboratory Sciences, King Saud University, Riyadh, Saudi Arabia
| | - David Boone
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Biomedical Informatics, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Priscilla F McAuliffe
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Division of Surgical Oncology, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Rachel C Jankowitz
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Division of Medical Oncology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Department of Medicine, Division of Hematology/Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Abramson Cancer Center, Philadelphia, Pennsylvania
| | - Adrian V Lee
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Jennifer M Atkinson
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Steffi Oesterreich
- Women’s Cancer Research Center, UPMC Hillman Cancer Center, Magee Womens Research Institute, Pittsburgh, Pennsylvania
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
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13
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Kelten Talu C, Toper MH, Şahin Y, Erdoğdu İH. Pathology and Biobanking. Turk Patoloji Derg 2020; 36:93-108. [PMID: 32189322 PMCID: PMC10511253 DOI: 10.5146/tjpath.2020.01482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 02/23/2020] [Indexed: 11/18/2022] Open
Abstract
Biobanks are units where high quality and long-term protection of biomaterials is maintained. This system, in which biological materials and data are systematically recorded and stored, is a unique resource for the study of the pathophysiology of disease, the development of diagnostic biomarkers, and working with human tissues for the potential discovery of targeted therapeutic agents. At this point, the pathology unit plays a unifying and complementary role between the clinical and core disciplines and offers optimal management of the patients' biomaterials for diagnostic and research projects. The aim of this article is to present general information with regard to a biobank constructed for the storage of tumor tissue and blood biospecimens. Ethical issues (informed consent, protection of confidentiality and privacy, and secondary use of biospecimens) and the information technology system (collection, systematic recording, backup and protection of clinical information) are important issues in biobanking. The selection of freezers to be used in storage (mechanical freezers, liquid-vapor nitrogen tanks), and if mechanical freezers are preferred the establishment of the relevant infrastructure and support team (such as additional power units for protection from power outages), the preservation of materials by aliquoting in different freezers, ensuring financing so as to afford the cost of the infrastructure, and implementation of all these dynamics while adhering to international guidelines are of the utmost importance.
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Affiliation(s)
- Canan Kelten Talu
- Department of Molecular Pathology, Graduate School of Health Sciences, Dokuz Eylul University, Izmir, Turkey
| | - Muhammed Hasan Toper
- Department of Molecular Pathology, Graduate School of Health Sciences, Dokuz Eylul University, Izmir, Turkey
| | - Yasemin Şahin
- Department of Molecular Pathology, Graduate School of Health Sciences, Dokuz Eylul University, Izmir, Turkey
| | - İbrahim Halil Erdoğdu
- Department of Molecular Pathology, Graduate School of Health Sciences, Dokuz Eylul University, Izmir, Turkey
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14
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Neoadjuvant Metformin Added to Systemic Therapy Decreases the Proliferative Capacity of Residual Breast Cancer. J Clin Med 2019; 8:jcm8122180. [PMID: 31835708 PMCID: PMC6947627 DOI: 10.3390/jcm8122180] [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: 11/07/2019] [Revised: 12/02/2019] [Accepted: 12/09/2019] [Indexed: 02/07/2023] Open
Abstract
The proliferative capacity of residual breast cancer (BC) disease indicates the existence of partial treatment resistance and higher probability of tumor recurrence. We explored the therapeutic potential of adding neoadjuvant metformin as an innovative strategy to decrease the proliferative potential of residual BC cells in patients failing to achieve pathological complete response (pCR) after pre-operative therapy. We performed a prospective analysis involving the intention-to-treat population of the (Metformin and Trastuzumab in Neoadjuvancy) METTEN study, a randomized multicenter phase II trial of women with primary, non-metastatic (human epidermal growth factor receptor 2) HER2-positive BC evaluating the efficacy, tolerability, and safety of oral metformin (850 mg twice-daily) for 24 weeks combined with anthracycline/taxane-based chemotherapy and trastuzumab (arm A) or equivalent regimen without metformin (arm B), before surgery. We centrally evaluated the proliferation marker Ki67 on sequential core biopsies using visual assessment (VA) and an (Food and Drug Administration) FDA-cleared automated digital image analysis (ADIA) algorithm. ADIA-based pre-operative values of high Ki67 (≥20%), but not those from VA, significantly predicted the occurrence of pCR in both arms irrespective of the hormone receptor status (p = 0.024 and 0.120, respectively). Changes in Ki67 in residual tumors of non-pCR patients were significantly higher in the metformin-containing arm (p = 0.025), with half of all patients exhibiting high Ki67 at baseline moving into the low-Ki67 (<20%) category after neoadjuvant treatment. By contrast, no statistically significant changes in Ki67 occurred in residual tumors of the control treatment arm (p = 0.293). There is an urgent need for innovative therapeutic strategies aiming to provide the protective effects of decreasing Ki67 after neoadjuvant treatment even if pCR is not achieved. Metformin would be evaluated as a safe candidate to decrease the aggressiveness of residual disease after neoadjuvant (pre-operative) systemic therapy of BC patients.
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15
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Li X, Martinez-Ledesma E, Zhang C, Gao F, Zheng S, Ding J, Wu S, Nguyen N, Clifford SC, Wen PY, Ligon KL, Yung WKA, Koul D. Tie2-FGFR1 Interaction Induces Adaptive PI3K Inhibitor Resistance by Upregulating Aurora A/PLK1/CDK1 Signaling in Glioblastoma. Cancer Res 2019; 79:5088-5101. [PMID: 31416846 DOI: 10.1158/0008-5472.can-19-0325] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 05/21/2019] [Accepted: 08/06/2019] [Indexed: 11/16/2022]
Abstract
PI3K-targeting therapy represents one of the most sought-after therapies for glioblastoma (GBM). Several small-molecule inhibitors have been evaluated in clinical trials, however, the emergence of resistance limits treatment potential. Here, we generated a patient-derived glioma sphere-forming cell (GSC) xenograft model resistant to the PI3K-specific inhibitor BKM-120. Integrated RNA sequencing and high-throughput drug screening revealed that the Aurora A kinase (Aurora A)/Polo-like kinase 1 (PLK1)/cyclin-dependent kinase 1 (CDK1) signaling pathway was the main driver of PI3K inhibitor resistance in the resistant xenografts. Aurora kinase was upregulated and pCDK1 was downregulated in resistant tumors from both xenografts and tumor tissues from patients treated with the PI3K inhibitor. Mechanistically, the tyrosine kinase receptor Tie2 physically interacted with FGFR1, promoting STAT3 phosphorylation and binding to the AURKA promoter, which increased Aurora A expression in resistant GSCs. Concurrent inhibition of Aurora A and PI3K signaling overcame PI3K inhibitor-induced resistance. This study offers a proof of concept to target PI3K and the collateral-activated pathway to improve GBM therapy. SIGNIFICANCE: These findings provide novel insights into the mechanisms of PI3K inhibitor resistance in glioblastoma.
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Affiliation(s)
- Xiaolong Li
- Brain Tumor Center, Departments of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Emmanuel Martinez-Ledesma
- Brain Tumor Center, Departments of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, Nuevo León, Mexico
| | - Chen Zhang
- Brain Tumor Center, Departments of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Feng Gao
- Brain Tumor Center, Departments of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Siyuan Zheng
- Brain Tumor Center, Departments of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jie Ding
- Brain Tumor Center, Departments of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Shaofang Wu
- Brain Tumor Center, Departments of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Nghi Nguyen
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M University College of Medicine, Houston, Texas
| | - Stephan C Clifford
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M University College of Medicine, Houston, Texas
| | - Patrick Y Wen
- Department of Oncologic Pathology, Dana-Farber Cancer Institute and Department of Pathology and Neurology Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Keith L Ligon
- Department of Oncologic Pathology, Dana-Farber Cancer Institute and Department of Pathology and Neurology Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - W K Alfred Yung
- Brain Tumor Center, Departments of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Dimpy Koul
- Brain Tumor Center, Departments of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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16
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Xing Y, Lin NU, Maurer MA, Chen H, Mahvash A, Sahin A, Akcakanat A, Li Y, Abramson V, Litton J, Chavez-MacGregor M, Valero V, Piha-Paul SA, Hong D, Do KA, Tarco E, Riall D, Eterovic AK, Wulf GM, Cantley LC, Mills GB, Doyle LA, Winer E, Hortobagyi GN, Gonzalez-Angulo AM, Meric-Bernstam F. Phase II trial of AKT inhibitor MK-2206 in patients with advanced breast cancer who have tumors with PIK3CA or AKT mutations, and/or PTEN loss/PTEN mutation. Breast Cancer Res 2019; 21:78. [PMID: 31277699 PMCID: PMC6612080 DOI: 10.1186/s13058-019-1154-8] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 05/15/2019] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND The PI3K/AKT pathway is activated through PIK3CA or AKT1 mutations and PTEN loss in breast cancer. We conducted a phase II trial with an allosteric AKT inhibitor MK-2206 in patients with advanced breast cancer who had tumors with PIK3CA/AKT1 mutations and/or PTEN loss/mutation. METHODS The primary endpoint was objective response rate (ORR). Secondary endpoints were 6-month progression-free survival (6 m PFS), predictive and pharmacodynamic markers, safety, and tolerability. Patients had pre-treatment and on-treatment biopsies as well as collection of peripheral blood mononuclear cells (PBMC) and platelet-rich plasma (PRP). Next-generation sequencing, immunohistochemistry, and reverse phase protein arrays (RPPA) were performed. RESULTS Twenty-seven patients received MK-2206. Eighteen patients were enrolled into the PIK3CA/AKT1 mutation arm (cohort A): 13 had PIK3CA mutations, four had AKT1 mutations, and one had a PIK3CA mutation as well as PTEN loss. ORR and 6 m PFS were both 5.6% (1/18), with one patient with HR+ breast cancer and a PIK3CA E542K mutation experiencing a partial response (on treatment for 36 weeks). Nine patients were enrolled on the PTEN loss/mutation arm (cohort B). ORR was 0% and 6 m PFS was 11% (1/9), observed in a patient with triple-negative breast cancer and PTEN loss. The study was stopped early due to futility. The most common adverse events were fatigue (48%) and rash (44%). On pre-treatment biopsy, PIK3CA and AKT1 mutation status was concordant with archival tissue testing. However, two patients with PTEN loss based on archival testing had PTEN expression on the pre-treatment biopsy. MK-2206 treatment was associated with a significant decline in pAKT S473 and pAKT T308 and PI3K activation score in PBMC and PRPs, but not in tumor biopsies. By IHC, there was no significant decrease in median pAKT S473 or Ki-67 staining, but a drop was observed in both responders. CONCLUSIONS MK-2206 monotherapy had limited clinical activity in advanced breast cancer patients selected for PIK3CA/AKT1 or PTEN mutations or PTEN loss. This may, in part, be due to inadequate target inhibition at tolerable doses in heavily pre-treated patients with pathway activation, as well as tumor heterogeneity and evolution in markers such as PTEN conferring challenges in patient selection. TRIAL REGISTRATION ClinicalTrials.gov, NCT01277757 . Registered 13 January 2011.
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Affiliation(s)
- Yan Xing
- Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Nancy U Lin
- Department of Medical Oncology, Dana Farber Cancer Institute, Boston, MA, 02215, USA
| | - Matthew A Maurer
- Columbia University, New York, NY, 10027, USA
- Present address: Bristol-Myers Squibb, Princeton, NJ, 08540, USA
| | - Huiqin Chen
- Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Armeen Mahvash
- Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Aysegul Sahin
- Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Argun Akcakanat
- Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Yisheng Li
- Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | | | - Jennifer Litton
- Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Mariana Chavez-MacGregor
- Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Vicente Valero
- Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Sarina A Piha-Paul
- Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - David Hong
- Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Kim-Anh Do
- Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Emily Tarco
- Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Dianna Riall
- IND Office, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Agda Karina Eterovic
- Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Gerburg M Wulf
- Department of Medicine, Beth Israel Deaconess Medical Center and Dana Farber Harvard Cancer Center, Boston, MA, 02215, USA
| | | | - Gordon B Mills
- Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | | | - Eric Winer
- Department of Medical Oncology, Dana Farber Cancer Institute, Boston, MA, 02215, USA
| | - Gabriel N Hortobagyi
- Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | | | - Funda Meric-Bernstam
- Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
- The Sheikh Khalifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
- Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1400 Holcombe Boulevard, Unit 455, Houston, TX, 77030, USA.
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17
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Annaratone L, Marchiò C, Sapino A. Tissues under-vacuum to overcome suboptimal preservation. N Biotechnol 2019; 52:104-109. [PMID: 31150841 DOI: 10.1016/j.nbt.2019.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 05/23/2019] [Accepted: 05/26/2019] [Indexed: 12/11/2022]
Abstract
The accuracy of histopathological diagnosis is strictly reliant on adequate tissue preservation, which is completely dependent on pre-analytical variables. Among these variables, the time interval between the end of surgical excision to the onset of fixation (the cold ischemia time) may adversely affect preservation of tissue morphology, influencing the interpretation and reproducibility of diagnosis. During this time interval, the activation of enzymes may produce autolysis and degradation of antigens and nucleic acids, thus potentially affecting immunocytochemical and molecular results. Several studies have described under-vacuum at 4 °C storage of fresh surgical specimens as a safe and reliable method to control cold ischemia and preserve fresh tissues, as well as to standardize fixation times and implement tissue-banking. This review article gives a systematic overview of the advantages and drawbacks of the use of under-vacuum tissue preservation and cooling in surgical pathology, highlighting the impact this procedure may have on diagnostic and experimental pathology. It also documents our experience acquired within daily practice and national and international projects.
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Affiliation(s)
- Laura Annaratone
- Department of Medical Sciences, University of Turin, Corso Dogliotti 14, 10126, Turin, Italy.
| | - Caterina Marchiò
- Department of Medical Sciences, University of Turin, Corso Dogliotti 14, 10126, Turin, Italy; Candiolo Cancer Institute, FPO-IRCCS, Str. Provinciale 142 km 3.95, 10060, Candiolo (Turin), Italy.
| | - Anna Sapino
- Department of Medical Sciences, University of Turin, Corso Dogliotti 14, 10126, Turin, Italy; Candiolo Cancer Institute, FPO-IRCCS, Str. Provinciale 142 km 3.95, 10060, Candiolo (Turin), Italy.
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18
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Kalinsky K, Sparano JA, Zhong X, Andreopoulou E, Taback B, Wiechmann L, Feldman SM, Ananthakrishnan P, Ahmad A, Cremers S, Sireci AN, Cross JR, Marks DK, Mundi P, Connolly E, Crew KD, Maurer MA, Hibshoosh H, Lee S, Hershman DL. Pre-surgical trial of the AKT inhibitor MK-2206 in patients with operable invasive breast cancer: a New York Cancer Consortium trial. Clin Transl Oncol 2018; 20:1474-1483. [PMID: 29736694 PMCID: PMC6222014 DOI: 10.1007/s12094-018-1888-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 04/26/2018] [Indexed: 12/19/2022]
Abstract
INTRODUCTION The PI3K/AKT/mTOR pathway is an oncogenic driver in breast cancer (BC). In this multi-center, pre-surgical study, we evaluated the tissue effects of the AKT inhibitor MK-2206 in women with stage I-III BC. MATERIALS AND METHODS Two doses of weekly oral MK2206 were administered at days - 9 and - 2 before surgery. The primary endpoint was reduction of pAktSer473 in breast tumor tissue from diagnostic biopsy to surgery. Secondary endpoints included changes in PI3K/AKT pathway tumor markers, tumor proliferation (ki-67), insulin growth factor pathway blood markers, pharmacokinetics (PK), genomics, and MK-2206 tolerability. Paired t tests were used to compare biomarker changes in pre- and post-MK-2206, and two-sample t tests to compare with prospectively accrued untreated controls. RESULTS Despite dose reductions, the trial was discontinued after 12 patients due to grade III rash, mucositis, and pruritus. While there was a trend to reduction in pAKT after MK-2206 (p = 0.06), there was no significant change compared to controls (n = 5, p = 0.65). After MK-2206, no significant changes in ki-67, pS6, PTEN, or stathmin were observed. There was no significant association between dose level and PK (p = 0.11). Compared to controls, MK-2206 significantly increased serum glucose (p = 0.02), insulin (p < 0.01), C-peptide (p < 0.01), and a trend in IGFBP-3 (p = 0.06). CONCLUSION While a trend to pAKT reduction after MK-2206 was observed, there was no significant change compared to controls. However, the accrued population was limited, due to toxicity being greater than expected. Pre-surgical trials can identify in vivo activity in the early drug development, but side effects must be considered in this healthy population.
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Affiliation(s)
- K Kalinsky
- Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, USA.
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Herbert Irving Pavilion, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, NY, 10032, USA.
| | - J A Sparano
- Department of Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, New York, USA
| | - X Zhong
- Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, USA
| | | | - B Taback
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Herbert Irving Pavilion, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, NY, 10032, USA
- Department of Surgery, College of Physicians and Surgeons, Columbia University, New York, USA
| | - L Wiechmann
- Department of Surgery, College of Physicians and Surgeons, Columbia University, New York, USA
| | - S M Feldman
- Department of Surgery, Albert Einstein College of Medicine, Montefiore Medical Center, New York, USA
| | | | - A Ahmad
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, New York, USA
| | - S Cremers
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, New York, USA
| | - A N Sireci
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, New York, USA
| | - J R Cross
- Donald B. and Catherine C. Marron Cancer Metabolism Center, Memorial Sloan-Kettering Cancer Center, New York, USA
| | - D K Marks
- Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, USA
| | - P Mundi
- Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Herbert Irving Pavilion, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, NY, 10032, USA
| | - E Connolly
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Herbert Irving Pavilion, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, NY, 10032, USA
- Department of Radiation Oncology, College of Physicians and Surgeons, Columbia University, New York, USA
| | - K D Crew
- Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Herbert Irving Pavilion, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, NY, 10032, USA
- Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, USA
| | - M A Maurer
- Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Herbert Irving Pavilion, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, NY, 10032, USA
| | - H Hibshoosh
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Herbert Irving Pavilion, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, NY, 10032, USA
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, New York, USA
| | - S Lee
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Herbert Irving Pavilion, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, NY, 10032, USA
- Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, USA
| | - D L Hershman
- Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Herbert Irving Pavilion, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, NY, 10032, USA
- Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, USA
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19
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Molecular determinants of post-mastectomy breast cancer recurrence. NPJ Breast Cancer 2018; 4:34. [PMID: 30345349 PMCID: PMC6185974 DOI: 10.1038/s41523-018-0089-z] [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] [Received: 01/23/2018] [Revised: 07/09/2018] [Accepted: 09/21/2018] [Indexed: 02/06/2023] Open
Abstract
Breast cancer (BC) adjuvant therapy after mastectomy in the setting of 1-3 positive lymph nodes has been controversial. This retrospective Translational Breast Cancer Research Consortium study evaluated molecular aberrations in primary cancers associated with locoregional recurrence (LRR) or distant metastasis (DM) compared to non-recurrent controls. We identified 115 HER2 negative, therapy naïve, T 1-3 and N 0-1 BC patients treated with mastectomy but no post-mastectomy radiotherapy. This included 32 LRR, 34 DM, and 49 controls. RNAseq was performed on primary tumors in 110 patients; with no difference in RNA profiles between patients with LRR, DM, or controls. DNA analysis on 57 primary tumors (17 LRR, 15 DM, and 25 controls) identified significantly more NF1 mutations and mitogen-activated protein kinase (MAPK) pathway gene mutations in patients with LRR (24%, 47%) and DM (27%, 40%) compared to controls (0%, 0%; p < 0.0001 and p = 0.0070, respectively). Three patients had matched primary vs. LRR samples, one patient had a gain of a NF1 mutation in the LRR. There was no significant difference between the groups for PTEN loss or cleaved caspase 3 expression. The mean percentage Ki 67 labeling index was higher in patients with LRR (29.2%) and DM (26%) vs. controls (14%, p = 0.0045). In summary, mutations in the MAPK pathway, specifically NF1, were associated with both LRR and DM, suggesting that alterations in MAPK signaling are associated with a more aggressive tumor phenotype. Validation of these associations in tissues from randomized trials may support targeted therapy to reduce breast cancer recurrence.
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20
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Evans KW, Yuca E, Akcakanat A, Scott SM, Arango NP, Zheng X, Chen K, Tapia C, Tarco E, Eterovic AK, Black DM, Litton JK, Yap TA, Tripathy D, Mills GB, Meric-Bernstam F. A Population of Heterogeneous Breast Cancer Patient-Derived Xenografts Demonstrate Broad Activity of PARP Inhibitor in BRCA1/2 Wild-Type Tumors. Clin Cancer Res 2018; 23:6468-6477. [PMID: 29093017 DOI: 10.1158/1078-0432.ccr-17-0615] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 04/19/2017] [Accepted: 07/11/2017] [Indexed: 12/21/2022]
Abstract
Background: Breast cancer patients who do not respond to neoadjuvant therapy have a poor prognosis. There is a pressing need for novel targets and models for preclinical testing. Here we report characterization of breast cancer patient-derived xenografts (PDX) largely generated from residual tumors following neoadjuvant chemotherapy.Experimental Design: PDXs were derived from surgical samples of primary or locally recurrent tumors. Normal and tumor DNA sequencing, RNASeq, and reverse phase protein arrays (RPPA) were performed. Phenotypic profiling was performed by determining efficacy of a panel of standard and investigational agents.Results: Twenty-six PDXs were developed from 25 patients. Twenty-two were generated from residual disease following neoadjuvant chemotherapy, and 24 were from triple-negative breast cancer (TNBC). These PDXs harbored a heterogeneous set of genomic alterations and represented all TNBC molecular subtypes. On RPPA, PDXs varied in extent of PI3K and MAPK activation. PDXs also varied in their sensitivity to chemotherapeutic agents. PI3K, mTOR, and MEK inhibitors repressed growth but did not cause tumor regression. The PARP inhibitor talazoparib caused dramatic regression in five of 12 PDXs. Notably, four of five talazoparib-sensitive models did not harbor germline BRCA1/2 mutations, but several had somatic alterations in homologous repair pathways, including ATM deletion and BRCA2 alterations.Conclusions: PDXs capture the molecular and phenotypic heterogeneity of TNBC. Here we show that PARP inhibition can have activity beyond germline BRCA1/2 altered tumors, causing regression in a variety of molecular subtypes. These models represent an opportunity for the discovery of rational combinations with targeted therapies and predictive biomarkers. Clin Cancer Res; 23(21); 6468-77. ©2017 AACR.
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Affiliation(s)
- Kurt W Evans
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Erkan Yuca
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Argun Akcakanat
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Stephen M Scott
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Natalia Paez Arango
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xiaofeng Zheng
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ken Chen
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Coya Tapia
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Emily Tarco
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Agda K Eterovic
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Dalliah M Black
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jennifer K Litton
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Timothy A Yap
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Debu Tripathy
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Gordon B Mills
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Funda Meric-Bernstam
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas. .,Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
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21
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Parasido EM, Silvestri A, Canzonieri V, Belluco C, Diodoro MG, Milione M, Melotti F, De Maria R, Liotta L, Petricoin EF, Pierobon M. Protein drug target activation homogeneity in the face of intra-tumor heterogeneity: implications for precision medicine. Oncotarget 2018; 8:48534-48544. [PMID: 28159918 PMCID: PMC5564706 DOI: 10.18632/oncotarget.14019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 12/09/2016] [Indexed: 12/17/2022] Open
Abstract
Introduction: Recent studies indicated tumors may be comprised of heterogeneous molecular subtypes and incongruent molecular portraits may emerge if different areas of the tumor are sampled. This study explored the impact of intra-tumoral heterogeneity in terms of activation/phosphorylation of FDA approved drug targets and downstream kinase substrates. Material and methods: Two independent sets of liver metastases from colorectal cancer were used to evaluate protein kinase-driven signaling networks within different areas using laser capture microdissection and reverse phase protein array. Results: Unsupervised hierarchical clustering analysis indicated that the signaling architecture and activation of the MAPK and AKT-mTOR pathways were consistently maintained within different regions of the same biopsy. Intra-patient variability of the MAPK and AKT-mTOR pathway were <1.06 fold change, while inter-patients variability reached fold change values of 5.01. Conclusions: Protein pathway activation mapping of enriched tumor cells obtained from different regions of the same tumor indicated consistency and robustness independent of the region sampled. This suggests a dominant protein pathway network may be activated in a high percentage of the tumor cell population. Given the genomic intra-tumoral variability, our data suggest that protein/phosphoprotein signaling measurements should be integrated with genomic analysis for precision medicine based analysis.
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Affiliation(s)
- Erika Maria Parasido
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA.,Department of Experimental Oncology, CRO-National Cancer Institute, Aviano, Italy
| | - Alessandra Silvestri
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
| | | | - Claudio Belluco
- Department of Surgical Oncology, CRO-National Cancer Institute, Aviano, Italy
| | | | - Massimo Milione
- Department of Pathology, Fondazione IRCCS Istituto Nazionale Tumori, Milano, Italy
| | - Flavia Melotti
- Department of Pathology, Fondazione IRCCS Istituto Nazionale Tumori, Milano, Italy
| | - Ruggero De Maria
- Department of Pathology, Sacred Heart Catholic University of Rome, Roma, Italy
| | - Lance Liotta
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
| | - Emanuel F Petricoin
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
| | - Mariaelena Pierobon
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
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22
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[Preanalytics and biobanking : Influence of preanalytical factors on tissue sample quality]. DER PATHOLOGE 2018; 39:297-302. [PMID: 29619508 DOI: 10.1007/s00292-018-0437-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Access to well-characterized human biosamples is one of the most important prerequisites for modern biomedical research. Biobanks play a decisive role here, as they provide corresponding biosamples for planned analyses. Many interfering factors influencing the quality of biosamples have to be taken into account. In addition to logistical, ethical, and data protection aspects, preanalytical variables in the context of sample acquisition, storage, and processing should be mentioned in particular. In this paper, therefore, the most important preanalytical influencing factors are presented systematically and an overview of current national and international activities for the standardized recording of these factors is provided with the goal of being able to better understand their influence on results and to minimize them in the near future.
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Abstract
The first biobank in Russia was created in 1998 to investigate post-Chernobyl thyroid tumors. The number of biobanks in the world is growing. Infrastructure and collaboration are improving. Ethical, legal and methodological guidelines for biobanking have been developed and are regularly reviewed. Biobanking objects are now not only biological samples of patients but also their dynamic biomedical characteristics. Comparison of genetics, proteome and tumour metabolism and in vivo radiological visualization is necessary to improve personalized diagnostics, treatment and its effectiveness. The article focuses on international evidence-based experience of sample preparation and cryopreservation of biological samples, information logistics, and integration solutions in biobanking. Guiding principles and the model of a modern biobank, integrating up-to-date technologies of digital personalized medicine and telemedicine in oncology and radiology are reported. The article may be of interest to a wide range of experts in biomedicine, especially oncologists, radiologists, pathologists, geneticists, and IT specialists.
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24
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Choi JS, Yoon D, Koo JS, Kim S, Park VY, Kim EK, Kim S, Kim MJ. Magnetic resonance metabolic profiling of estrogen receptor-positive breast cancer: correlation with currently used molecular markers. Oncotarget 2017; 8:63405-63416. [PMID: 28969000 PMCID: PMC5609932 DOI: 10.18632/oncotarget.18822] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 06/02/2017] [Indexed: 12/14/2022] Open
Abstract
Estrogen receptor (ER)-positive breast cancers overall have a good prognosis, however, some patients suffer relapses and do not respond to endocrine therapy. The purpose of this study was to determine whether there are any correlations between high-resolution magic angle spinning (HR-MAS) magnetic resonance spectroscopy (MRS) metabolic profiles of core needle biopsy (CNB) specimens and the molecular markers currently used in patients with ER-positive breast cancers. The metabolic profiling of CNB samples from 62 ER-positive cancers was performed by HR-MAS MRS. Metabolic profiles were compared according to human epidermal growth factor receptor 2 (HER2) and Ki-67 status, and luminal type, using the Mann-Whitney test. Multivariate analysis was performed with orthogonal projections to latent structure-discriminant analysis (OPLS-DA). In univariate analysis, the HER2-positive group was shown to have higher levels of glycine and glutamate, compared to the HER2-negative group (P<0.01, and P <0.01, respectively). The high Ki-67 group showed higher levels of glutamate than the low Ki-67 group without statistical significance. Luminal B cancers showed higher levels of glycine (P=0.01) than luminal A cancers. In multivariate analysis, the OPLS-DA models built with HR-MAS MR metabolic profiles showed visible discrimination between the subgroups according to HER2 and Ki-67 status, and luminal type. This study showed that the metabolic profiles of CNB samples assessed by HR-MAS MRS can be used to detect potential prognostic biomarkers as well as to understand the difference in metabolic mechanism among subtypes of ER-positive breast cancer.
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Affiliation(s)
- Ji Soo Choi
- Department of Radiology, Breast Cancer Center, Samsung Medical Center, Seoul, Korea
| | - Dahye Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University, Busan, Korea
| | - Ja Seung Koo
- Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Siwon Kim
- Department of Forensic Chemistry, National Forensic Service Busan Institute, Yangsan-si, Korea
| | - Vivian Youngjean Park
- Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea
| | - Eun-Kyung Kim
- Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea
| | - Suhkmann Kim
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University, Busan, Korea
| | - Min Jung Kim
- Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea
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25
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Liao P, Wang W, Li Y, Wang R, Jin J, Pang W, Chen Y, Shen M, Wang X, Jiang D, Pang J, Liu M, Lin X, Feng XH, Wang P, Ge X. Palmitoylated SCP1 is targeted to the plasma membrane and negatively regulates angiogenesis. eLife 2017; 6:e22058. [PMID: 28440748 PMCID: PMC5404917 DOI: 10.7554/elife.22058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Accepted: 03/25/2017] [Indexed: 12/12/2022] Open
Abstract
SCP1 as a nuclear transcriptional regulator acts globally to silence neuronal genes and to affect the dephosphorylation of RNA Pol ll. However, we report the first finding and description of SCP1 as a plasma membrane-localized protein in various cancer cells using EGFP- or other epitope-fused SCP1. Membrane-located SCP1 dephosphorylates AKT at serine 473, leading to the abolishment of serine 473 phosphorylation that results in suppressed angiogenesis and a decreased risk of tumorigenesis. Consistently, we observed increased AKT phosphorylation and angiogenesis followed by enhanced tumorigenesis in Ctdsp1 (which encodes SCP1) gene - knockout mice. Importantly, we discovered that the membrane localization of SCP1 is crucial for impeding angiogenesis and tumor growth, and this localization depends on palmitoylation of a conserved cysteine motif within its NH2 terminus. Thus, our study discovers a novel mechanism underlying SCP1 shuttling between the plasma membrane and nucleus, which constitutes a unique pathway in transducing AKT signaling that is closely linked to angiogenesis and tumorigenesis.
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Affiliation(s)
- Peng Liao
- Department of Central Laboratory, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Weichao Wang
- Department of Central Laboratory, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Yu Li
- Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Rui Wang
- Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Jiali Jin
- Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Weijuan Pang
- Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Yunfei Chen
- Department of Central Laboratory, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Mingyue Shen
- Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Xinbo Wang
- Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Dongyang Jiang
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jinjiang Pang
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Mingyao Liu
- Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Xia Lin
- Department of Surgery, Baylor College of Medicine, Houston, United States
| | - Xin-Hua Feng
- Life Sciences Institute and Innovation Center for Cell Signaling Network, Zhejiang University, Zhejiang, China
| | - Ping Wang
- Department of Central Laboratory, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
- School of Life Science and Technology, Tongji University, Shanghai, China
| | - Xin Ge
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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26
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Hadad SM, Jordan LB, Roy PG, Purdie CA, Iwamoto T, Pusztai L, Moulder-Thompson SL, Thompson AM. A prospective comparison of ER, PR, Ki67 and gene expression in paired sequential core biopsies of primary, untreated breast cancer. BMC Cancer 2016; 16:745. [PMID: 27658825 PMCID: PMC5034430 DOI: 10.1186/s12885-016-2788-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 09/15/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Sequential biopsy of breast cancer is used to assess biomarker effects and drug efficacy. The preoperative "window of opportunity" setting is advantageous to test biomarker changes in response to therapeutic agents in previously untreated primary cancers. This study tested the consistency over time of paired, sequential biomarker measurements on primary, operable breast cancer in the absence of drug therapy. METHODS Immunohistochemistry was performed for ER, PR and Ki67 on paired preoperative/operative tumor samples taken from untreated patients within 2 weeks of each other. Microarray analysis on mRNA extracted from formalin fixed paraffin embedded cores was performed using Affymetrix based arrays on paired core biopsies analysed using Ingenuity Pathway Analysis (IPA) and Gene Set Analysis (GSA). RESULTS In 41 core/resection pairs, the recognised trend to lower ER, PR and Ki67 score on resected material was confirmed. Concordance for ER, PR and Ki67 without changing biomarker status (e.g. ER+ to ER-) was 90, 74 and 80 % respectively. However, in 23 paired core samples (diagnostic core v on table core), Ki67 using a cut off of 13.25 % was concordant in 22/23 (96 %) and differences in ER and PR immunohistochemistry by Allred or Quickscore between the pairs did not impact hormone receptor status. IPA and GSA demonstrated substantial gene expression changes between paired cores at the mRNA level, including reduced expression of ER pathway analysis on the second core, despite the absence of drug intervention. CONCLUSIONS Sequential core biopsies of primary breast cancer (but not core versus resection) was consistent and is appropriate to assess the effects of drug therapy in vivo on ER, PR and Ki67 using immunohistochemistry. Conversely, studies utilising mRNA expression may require non-treatment controls to distinguish therapeutic from biopsy differences.
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Affiliation(s)
| | - Lee B. Jordan
- Department of Pathology, Ninewells Hospital and Medical School, Dundee, DD1 9SY UK
| | | | - Colin A. Purdie
- Department of Pathology, Ninewells Hospital and Medical School, Dundee, DD1 9SY UK
| | - Takayuki Iwamoto
- Department of Breast and Endocrine Surgery, Okayama University, Okayama, Japan
| | - Lajos Pusztai
- Yale Medical Oncology, PO Box 208028, New Haven, 06520 CT USA
| | - Stacy L. Moulder-Thompson
- Department of Breast Medical Oncology, University of Texas MD Anderson Cancer Center, 1400 Holcombe Boulevard, Houston, 77030 TX USA
| | - Alastair M. Thompson
- Department of Breast Surgical Oncology, University of Texas MD Anderson Cancer Center, 1400 Holcombe Boulevard, Houston, 77030 TX USA
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27
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Deng J, Wang L, Ni J, Beretov J, Wasinger V, Wu D, Duan W, Graham P, Li Y. Proteomics discovery of chemoresistant biomarkers for ovarian cancer therapy. Expert Rev Proteomics 2016; 13:905-915. [DOI: 10.1080/14789450.2016.1233065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Junli Deng
- Cancer Care Centre, St George Hospital, Kogarah, Australia
- St George and Sutherland Clinical School, University of New South Wales (UNSW), Kensington, Australia
- Department of Gynecological Oncology, Henan Cancer Hospital, Zhengzhou, China
- Zhengzhou University, Zhengzhou, China
| | - Li Wang
- Department of Gynecological Oncology, Henan Cancer Hospital, Zhengzhou, China
- Zhengzhou University, Zhengzhou, China
| | - Jie Ni
- Cancer Care Centre, St George Hospital, Kogarah, Australia
- St George and Sutherland Clinical School, University of New South Wales (UNSW), Kensington, Australia
| | - Julia Beretov
- Cancer Care Centre, St George Hospital, Kogarah, Australia
- St George and Sutherland Clinical School, University of New South Wales (UNSW), Kensington, Australia
| | - Valerie Wasinger
- Mark Wainwright Analytical Centre, Bioanalytical Mass Spectrometry Facility, University of New South Wales (UNSW), Kensington, Australia
- School of Medical Sciences, University of New South Wales (UNSW), Kensington, Australia
| | - Duojia Wu
- Cancer Care Centre, St George Hospital, Kogarah, Australia
- St George and Sutherland Clinical School, University of New South Wales (UNSW), Kensington, Australia
| | - Wei Duan
- School of Medicine, Deakin University, Waurn Ponds, Australia
| | - Peter Graham
- Cancer Care Centre, St George Hospital, Kogarah, Australia
- St George and Sutherland Clinical School, University of New South Wales (UNSW), Kensington, Australia
| | - Yong Li
- Cancer Care Centre, St George Hospital, Kogarah, Australia
- St George and Sutherland Clinical School, University of New South Wales (UNSW), Kensington, Australia
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28
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Lu Y, Ling S, Hegde AM, Byers LA, Coombes K, Mills GB, Akbani R. Using reverse-phase protein arrays as pharmacodynamic assays for functional proteomics, biomarker discovery, and drug development in cancer. Semin Oncol 2016; 43:476-83. [PMID: 27663479 PMCID: PMC5111873 DOI: 10.1053/j.seminoncol.2016.06.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The majority of the targeted therapeutic agents in clinical use target proteins and protein function. Although DNA and RNA analyses have been used extensively to identify novel targets and patients likely to benefit from targeted therapies, these are indirect measures of the levels and functions of most therapeutic targets. More importantly, DNA and RNA analysis is ill-suited for determining the pharmacodynamic effects of target inhibition. Assessing changes in protein levels and function is the most efficient way to evaluate the mechanisms underlying sensitivity and resistance to targeted agents. Understanding these mechanisms is necessary to identify patients likely to benefit from treatment and to develop rational drug combinations to prevent or bypass therapeutic resistance. There is an urgent need for a robust approach to assess protein levels and protein function in model systems and across patient samples. While "shot gun" mass spectrometry can provide in-depth analysis of proteins across a limited number of samples, and emerging approaches such as multiple reaction monitoring have the potential to analyze candidate markers, mass spectrometry has not entered into general use because of the high cost, requirement of extensive analysis and support, and relatively large amount of material needed for analysis. Rather, antibody-based technologies, including immunohistochemistry, radioimmunoassays, enzyme-linked immunosorbent assays (ELISAs), and more recently protein arrays, remain the most common approaches for multiplexed protein analysis. Reverse-phase protein array (RPPA) technology has emerged as a robust, sensitive, cost-effective approach to the analysis of large numbers of samples for quantitative assessment of key members of functional pathways that are affected by tumor-targeting therapeutics. The RPPA platform is a powerful approach for identifying and validating targets, classifying tumor subsets, assessing pharmacodynamics, and identifying prognostic and predictive markers, adaptive responses and rational drug combinations in model systems and patient samples. Its greatest utility has been realized through integration with other analytic platforms such as DNA sequencing, transcriptional profiling, epigenomics, mass spectrometry, and metabolomics. The power of the technology is becoming apparent through its use in pathology laboratories and integration into trial design and implementation.
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Affiliation(s)
- Yiling Lu
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Shiyun Ling
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Apurva M Hegde
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Lauren A Byers
- Department of Thoracic/Head & Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Kevin Coombes
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH
| | - Gordon B Mills
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Rehan Akbani
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX.
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Kalinsky K, Zheng T, Hibshoosh H, Du X, Mundi P, Yang J, Refice S, Feldman SM, Taback B, Connolly E, Crew KD, Maurer MA, Hershman DL. Proteomic modulation in breast tumors after metformin exposure: results from a "window of opportunity" trial. Clin Transl Oncol 2016; 19:180-188. [PMID: 27305912 DOI: 10.1007/s12094-016-1521-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 05/19/2016] [Indexed: 12/29/2022]
Abstract
PURPOSE Reverse Phase Protein Array (RPPA) is a high-throughput antibody-based technique to assess cellular protein activity. The goal of this study was to assess protein marker changes by RPPA in tumor tissue from a pre-surgical metformin trial in women with operable breast cancer (BC). METHODS In an open-label trial, metformin 1500-mg PO daily was administered prior to resection in 35 non-diabetic patients with stage 0-III BC, body mass index ≥25 kg/m2. For RPPA, formalin-fixed paraffin-embedded (FFPE) samples were probed with 160 antibodies. Paired and two-sample t-tests were performed (p ≤ 0.05). Multiple comparisons were adjusted for by fixing the false discovery rate at 25 %. We evaluated whether pre- and post-metformin changes of select markers by RPPA were identified by immunohistochemistry (IHC) in these samples. We also assessed for these changes by western blot in metformin-treated BC cell lines. RESULTS After adjusting for multiple comparisons in the 32 tumors from metformin-treated patients vs. 34 untreated historical controls, 11 proteins were significantly different between cases vs. CONTROLS increases in Raptor, C-Raf, Cyclin B1, Cyclin D1, TRFC, and Syk; and reductions in pMAPKpT202,Y204, JNKpT183,pT185, BadpS112, PKC.alphapS657, and SrcpY416. Cyclin D1 change after metformin by IHC was not observed. In cell lines, reductions in JNKpT183 and BadpS112 were seen, with no change in Cyclin D1 or Raptor. CONCLUSIONS These results suggest that metformin modulates apoptosis/cell cycle, cell signaling, and invasion/motility. These findings should be assessed in larger metformin trials. If confirmed, associations between these changes and BC clinical outcome should be evaluated. CLINICALTRIALS. GOV IDENTIFIER NCT00930579.
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Affiliation(s)
- K Kalinsky
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA. .,Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.
| | - T Zheng
- Department of Statistics, Columbia University, New York, USA
| | - H Hibshoosh
- Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - X Du
- Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA
| | - P Mundi
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - J Yang
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - S Refice
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - S M Feldman
- Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Surgery, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - B Taback
- Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Surgery, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - E Connolly
- Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Radiation Oncology, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - K D Crew
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA.,Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Epidemiology and Biostatistics, Mailman School of Public Health, Columbia University, New York, USA
| | - M A Maurer
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA.,Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA
| | - D L Hershman
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA.,Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Epidemiology and Biostatistics, Mailman School of Public Health, Columbia University, New York, USA
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30
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Park VY, Yoon D, Koo JS, Kim EK, Kim SI, Choi JS, Park S, Park HS, Kim S, Kim MJ. Intratumoral Agreement of High-Resolution Magic Angle Spinning Magnetic Resonance Spectroscopic Profiles in the Metabolic Characterization of Breast Cancer. Medicine (Baltimore) 2016; 95:e3398. [PMID: 27082613 PMCID: PMC4839857 DOI: 10.1097/md.0000000000003398] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
High-resolution magic angle spinning (HR-MAS) magnetic resonance (MR) spectroscopy data may serve as a biomarker for breast cancer, with only a small volume of tissue sample required for assessment. However, previous studies utilized only a single tissue sample from each patient. The aim of this study was to investigate whether intratumoral location and biospecimen type affected the metabolic characterization of breast cancer assessed by HR-MAS MR spectroscopy. This prospective study was approved by the institutional review board and informed consent was obtained. Preoperative core-needle biopsies (CNBs), central, and peripheral surgical tumor specimens were prospectively collected under ultrasound (US) guidance in 31 patients with invasive breast cancer. Specimens were assessed with HR-MAS MR spectroscopy. The reliability of metabolite concentrations was evaluated and multivariate analysis was performed according to intratumoral location and biospecimen type. There was a moderate or higher agreement between the relative concentrations of 94.3% (33 of 35) of metabolites in the center and periphery, 80.0% (28 of 35) of metabolites in the CNB and central surgical specimens, and 82.9% (29 of 35) of metabolites between all 3 specimen types. However, there was no significant agreement between the concentrations of phosphocholine (PC) and phosphoethanolamine (PE) in the center and periphery. The concentrations of several metabolites (adipate, arginine, fumarate, glutamate, PC, and PE) had no significant agreement between the CNB and central surgical specimens. In conclusion, most HR-MAS MR spectroscopic data do not differ based on intratumoral location or biospecimen type. However, some metabolites may be affected by specimen-related variables, and caution is recommended in decision-making based solely on metabolite concentrations, particularly PC and PE. Further validation through future studies is needed for the clinical implementation of these biomarkers based on data from a single tissue sample.
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Affiliation(s)
- Vivian Youngjean Park
- From the Department of Radiology and Research Institute of Radiological Science (VYP, E-KK, MJK), Severance Hospital, Yonsei University College of Medicine, Seoul; Department of Chemistry and Chemistry Institute for Functional Materials (DY, SK), Pusan National University, Busan; Department of Pathology (JSK), Department of Surgery (SIK, SP, HSP), Severance Hospital, Yonsei University College of Medicine; and Department of Radiology (JSC), Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Bauer DR, Stevens B, Chafin D, Theiss AP, Otter M. Active monitoring of formaldehyde diffusion into histological tissues with digital acoustic interferometry. J Med Imaging (Bellingham) 2016; 3:017002. [PMID: 26866049 DOI: 10.1117/1.jmi.3.1.017002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 01/06/2016] [Indexed: 01/08/2023] Open
Abstract
The preservation of certain labile cancer biomarkers with formaldehyde-based fixatives can be considerably affected by preanalytical factors such as quality of fixation. Currently, there are no technologies capable of quantifying a fixative's concentration or the formation of cross-links in tissue specimens. This work examined the ability to detect formalin diffusion into a histological specimen in real time. As formaldehyde passively diffused into tissue, an ultrasound time-of-flight (TOF) shift of several nanoseconds was generated due to the distinct sound velocities of formalin and exchangeable fluid within the tissue. This signal was resolved with a developed digital acoustic interferometry algorithm, which compared the phase differential between signals and computed the absolute TOF with subnanosecond precision. The TOF was measured repeatedly across the tissue sample for several hours until diffusive equilibrium was realized. The change in TOF from 6-mm thick ex vivo human tonsil fit a single-exponential decay ([Formula: see text]) with rate constants that varied drastically spatially between 2 and 10 h ([Formula: see text]) due to substantial heterogeneity. This technology may prove essential to personalized cancer diagnostics by documenting and tracking biospecimen preanalytical fixation, guaranteeing their suitability for diagnostic assays, and speeding the workflow in clinical histopathology laboratories.
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Affiliation(s)
- Daniel R Bauer
- Ventana Medical Systems Inc. , 1910 East Innovation Park Drive, Tucson, Arizona 85755, United States
| | - Benjamin Stevens
- Ventana Medical Systems Inc. , 1910 East Innovation Park Drive, Tucson, Arizona 85755, United States
| | - David Chafin
- Ventana Medical Systems Inc. , 1910 East Innovation Park Drive, Tucson, Arizona 85755, United States
| | - Abbey P Theiss
- Ventana Medical Systems Inc. , 1910 East Innovation Park Drive, Tucson, Arizona 85755, United States
| | - Michael Otter
- Ventana Medical Systems Inc. , 1910 East Innovation Park Drive, Tucson, Arizona 85755, United States
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Dias MH, Kitano ES, Zelanis A, Iwai LK. Proteomics and drug discovery in cancer. Drug Discov Today 2016; 21:264-77. [DOI: 10.1016/j.drudis.2015.10.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 09/30/2015] [Accepted: 10/12/2015] [Indexed: 12/14/2022]
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Incorporating Biomarkers in Studies of Chemoprevention. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 882:69-94. [PMID: 26987531 DOI: 10.1007/978-3-319-22909-6_3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Despite Food and Drug Administration approval of tamoxifen and raloxifene for breast cancer risk reduction and endorsement by multiple agencies, uptake of these drugs for primary prevention in the United States is only 4% for risk eligible women likely to benefit from their use. Side effects coupled with incomplete efficacy and lack of a survival advantage are the likely reasons. This disappointing uptake, after the considerable effort and expense of large Phase III cancer incidence trials required for approval, suggests that a new paradigm is required. Current prevention research is focused on (1) refining risk prediction, (2) exploring behavioral and natural product interventions, and (3) utilizing novel translational trial designs for efficacy. Risk biomarkers will play a central role in refining risk estimates from traditional models and selecting cohorts for prevention trials. Modifiable risk markers called surrogate endpoint or response biomarkers will continue to be used in Phase I and II prevention trials to determine optimal dose or exposure and likely effectiveness from an intervention. The majority of Phase II trials will continue to assess benign breast tissue for response and mechanism of action biomarkers. Co-trials are those in which human and animal cohorts receive the same effective dose and the same tissue biomarkers are assessed for modulation due to the intervention, but then additional animals are allowed to progress to cancer development. These collaborations linking biomarker modulation and cancer prevention may obviate the need for cancer incidence trials for non-prescription interventions.
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McAuliffe PF, Evans KW, Akcakanat A, Chen K, Zheng X, Zhao H, Eterovic AK, Sangai T, Holder AM, Sharma C, Chen H, Do KA, Tarco E, Gagea M, Naff KA, Sahin A, Multani AS, Black DM, Mittendorf EA, Bedrosian I, Mills GB, Gonzalez-Angulo AM, Meric-Bernstam F. Ability to Generate Patient-Derived Breast Cancer Xenografts Is Enhanced in Chemoresistant Disease and Predicts Poor Patient Outcomes. PLoS One 2015; 10:e0136851. [PMID: 26325287 PMCID: PMC4556673 DOI: 10.1371/journal.pone.0136851] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 07/20/2015] [Indexed: 12/23/2022] Open
Abstract
Background Breast cancer patients who are resistant to neoadjuvant chemotherapy (NeoCT) have a poor prognosis. There is a pressing need to develop in vivo models of chemo resistant tumors to test novel therapeutics. We hypothesized that patient-derived breast cancer xenografts (BCXs) from chemo- naïve and chemotherapy-exposed tumors can provide high fidelity in vivo models for chemoresistant breast cancers. Methods Patient tumors and BCXs were characterized with short tandem repeat DNA fingerprinting, reverse phase protein arrays, molecular inversion probe arrays, and next generation sequencing. Results Forty-eight breast cancers (24 post-chemotherapy, 24 chemo-naïve) were implanted and 13 BCXs were established (27%). BCX engraftment was higher in TNBC compared to hormone-receptor positive cancer (53.8% vs. 15.6%, p = 0.02), in tumors from patients who received NeoCT (41.7% vs. 8.3%, p = 0.02), and in patients who had progressive disease on NeoCT (85.7% vs. 29.4%, p = 0.02). Twelve patients developed metastases after surgery; in five, BCXs developed before distant relapse. Patients whose tumors developed BCXs had a lower recurrence-free survival (p = 0.015) and overall survival (p<0.001). Genomic losses and gains could be detected in the BCX, and three models demonstrated a transformation to induce mouse tumors. However, overall, somatic mutation profiles including potential drivers were maintained upon implantation and serial passaging. One BCX model was cultured in vitro and re-implanted, maintaining its genomic profile. Conclusions BCXs can be established from clinically aggressive breast cancers, especially in TNBC patients with poor response to NeoCT. Future studies will determine the potential of in vivo models for identification of genotype-phenotype correlations and individualization of treatment.
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Affiliation(s)
- Priscilla F. McAuliffe
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Kurt W. Evans
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Argun Akcakanat
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Ken Chen
- Department of Bioinformatics and Computational Science, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Xiaofeng Zheng
- Department of Bioinformatics and Computational Science, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Hao Zhao
- Department of Bioinformatics and Computational Science, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Agda Karina Eterovic
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Takafumi Sangai
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Ashley M. Holder
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Chandeshwar Sharma
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Huiqin Chen
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Kim-Anh Do
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Emily Tarco
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Mihai Gagea
- Department of Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Katherine A. Naff
- Department of Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Aysegul Sahin
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Asha S. Multani
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Dalliah M. Black
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Elizabeth A. Mittendorf
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Isabelle Bedrosian
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Gordon B. Mills
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Ana Maria Gonzalez-Angulo
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Funda Meric-Bernstam
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
- * E-mail:
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Boellner S, Becker KF. Recent progress in protein profiling of clinical tissues for next-generation molecular diagnostics. Expert Rev Mol Diagn 2015. [DOI: 10.1586/14737159.2015.1070098] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Dasari A, Phan A, Gupta S, Rashid A, Yeung SCJ, Hess K, Chen H, Tarco E, Chen H, Wei C, Anh-Do K, Halperin D, Meric-Bernstam F, Yao J. Phase I study of the anti-IGF1R antibody cixutumumab with everolimus and octreotide in advanced well-differentiated neuroendocrine tumors. Endocr Relat Cancer 2015; 22:431-41. [PMID: 25900182 PMCID: PMC4566955 DOI: 10.1530/erc-15-0002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/21/2015] [Indexed: 12/22/2022]
Abstract
Preclinical data suggest multiple roles for the IGF1 receptor (IGF1R) in neuroendocrine tumors (NETs), including mediating resistance to mammalian target of rapamycin (mTOR) inhibitors. Everolimus, an oral mTOR inhibitor, and octreotide long-acting repeatable (LAR) are approved for subgroups of well-differentiated NET. The primary objective of the present study was to establish the safety and recommended phase II dose (RP2D) of cixutumumab, a monoclonal antibody (MAB) against IGF1R, with everolimus and octreotide LAR. Patients with well-differentiated NET were treated with 10 mg everolimus p.o. daily, 20 mg octreotide LAR i.m. every 21 days, and escalating doses of cixutumumab. An expansion cohort was enrolled at RP2D. Correlative studies included the evaluation of mTOR pathway inhibition in paired tumor biopsies and the effects of this combination on metabolism via indirect calorimetry. Nineteen patients with progressive disease were enrolled, including nine to the expansion portion. Two patients had dose-limiting toxicities of grade 3 mucositis at 15 mg/kg cixutumumab. Long-term tolerance at RP2D was problematic, and the most common ≥grade 3 adverse event was fatigue. One patient with metastatic insulinoma had a confirmed partial response, whereas 17 had stable disease. The median progression-free survival was 43.6 weeks, and the median overall survival was 25.5 months. The RP2D of this combination per the predefined study protocol of 10 mg/kg cixutumumab i.v., 20 mg octreotide LAR i.m. every 21 days plus 10 mg everolimus p.o. daily is associated with non-dose-limiting toxicities that limit long-term tolerance. Although a signal of activity was noted in the present study, this will need to be reconciled with limited tolerance of the combination and data from larger studies of anti-IGF1R MABs in NET that have been disappointing.
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Affiliation(s)
- Arvind Dasari
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Alexandria Phan
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Sanjay Gupta
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Asif Rashid
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Sai-Ching Jim Yeung
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Kenneth Hess
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Helen Chen
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Emily Tarco
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Huiqin Chen
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Caimiao Wei
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Kim Anh-Do
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Daniel Halperin
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - Funda Meric-Bernstam
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
| | - James Yao
- Department of Gastrointestinal Medical OncologyThe University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Street, Unit 426, Houston, Texas 77030, USANational Cancer InstituteRockville, Maryland, USA
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Gündisch S, Annaratone L, Beese C, Drecol E, Marchiò C, Quaglino E, Sapino A, Becker KF, Bussolati G. Critical roles of specimen type and temperature before and during fixation in the detection of phosphoproteins in breast cancer tissues. J Transl Med 2015; 95:561-71. [PMID: 25730369 PMCID: PMC4421866 DOI: 10.1038/labinvest.2015.37] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 12/09/2014] [Accepted: 12/31/2014] [Indexed: 12/21/2022] Open
Abstract
The most efficient approach for therapy selection to inhibit the deregulated kinases in cancer tissues is to measure their phosphorylation status prior to the treatment. The aim of our study was to evaluate the influence of pre-analytical parameters (cold ischemia time, temperature before and during tissue fixation, and sample type) on the levels of proteins and phosphoproteins in breast cancer tissues, focusing on the PI3 kinase/AKT pathway. The BALB-neuT mouse breast cancer model expressing HER2 and pAKT proteins and human biopsy and resection specimens were analyzed. By using quantitative reverse phase protein arrays (RPPA), 9 proteins and 16 phosphoproteins relevant to breast cancer biology were assessed. Cold temperatures before and during fixation resulted in a marked improvement in the preservation of the reactivity of biological markers (eg, ER, HER2) in general and, specifically, pHER2 and pAKT. Some phosphoproteins, eg, pHER2 and pAKT, were more sensitive to prolonged cold ischemia times than others (eg, pS6RP and pSTAT5). By comparing the phosphoprotein levels in core needle biopsies with those in resection specimens, we found a marked decrease in many phosphoproteins in the latter. Cold conditions can improve the preservation of proteins and phosphoproteins in breast cancer tissues. Biopsies ≤ 1 mm in size are the preferred sample type for assessing the activity of deregulated kinases for personalized cancer treatments because the phosphoprotein levels are better preserved compared with resection specimens. Each potential new (phospho)protein biomarker should be tested for its sensitivity to pre-analytical processing prior to the development of a diagnostic assay.
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Affiliation(s)
- Sibylle Gündisch
- Institute of Pathology, Technische Universität München, Trogerstrasse, Munich, Germany
| | - Laura Annaratone
- Department of Medical Sciences, University of Turin, Via Santena, Turin, Italy
| | - Christian Beese
- Institute of Pathology, Technische Universität München, Trogerstrasse, Munich, Germany
| | - Enken Drecol
- Institute of Pathology, Technische Universität München, Trogerstrasse, Munich, Germany
| | - Caterina Marchiò
- Department of Medical Sciences, University of Turin, Via Santena, Turin, Italy,Pathology Service, Azienda Ospedaliera Città della Salute e della Scienza di Torino, Via Santena, Turin, Italy
| | - Elena Quaglino
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, Via Nizza, Turin, Italy
| | - Anna Sapino
- Department of Medical Sciences, University of Turin, Via Santena, Turin, Italy,Pathology Service, Azienda Ospedaliera Città della Salute e della Scienza di Torino, Via Santena, Turin, Italy
| | - Karl-Friedrich Becker
- Institute of Pathology, Technische Universität München, Trogerstrasse, Munich, Germany,Technische Universität München, Institute of Pathology, Trogerstrasse18, Munich, D-81675, Germany. E-mail:
| | - Gianni Bussolati
- Department of Medical Sciences, University of Turin, Via Santena, Turin, Italy,Department of Medical Sciences, University of Turin, Via Santena 7, Turin 10126, Italy. E-mail:
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Proteomics in cancer biomarkers discovery: challenges and applications. DISEASE MARKERS 2015; 2015:321370. [PMID: 25999657 PMCID: PMC4427011 DOI: 10.1155/2015/321370] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 01/15/2015] [Accepted: 02/18/2015] [Indexed: 01/28/2023]
Abstract
With the introduction of recent high-throughput technologies to various fields of science and medicine, it is becoming clear that obtaining large amounts of data is no longer a problem in modern research laboratories. However, coherent study designs, optimal conditions for obtaining high-quality data, and compelling interpretation, in accordance with the evidence-based systems biology, are critical factors in ensuring the emergence of good science out of these recent technologies. This review focuses on the proteomics field and its new perspectives on cancer research. Cornerstone publications that have tremendously helped scientists and clinicians to better understand cancer pathogenesis; to discover novel diagnostic and/or prognostic biomarkers; and to suggest novel therapeutic targets will be presented. The author of this review aims at presenting some of the relevant literature data that helped as a step forward in bridging the gap between bench work results and bedside potentials. Undeniably, this review cannot include all the work that is being produced by expert research groups all over the world.
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Becker KF. Using tissue samples for proteomic studies-Critical considerations. Proteomics Clin Appl 2015; 9:257-67. [DOI: 10.1002/prca.201400106] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 12/08/2014] [Accepted: 01/07/2015] [Indexed: 01/09/2023]
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Robbins HL, Hague A. The PI3K/Akt Pathway in Tumors of Endocrine Tissues. Front Endocrinol (Lausanne) 2015; 6:188. [PMID: 26793165 PMCID: PMC4707207 DOI: 10.3389/fendo.2015.00188] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 12/07/2015] [Indexed: 12/29/2022] Open
Abstract
The phosphatidylinositol 3-kinase (PI3K)/Akt pathway is a key driver in carcinogenesis. Defects in this pathway in human cancer syndromes such as Cowden's disease and Multiple Endocrine Neoplasia result in tumors of endocrine tissues, highlighting its importance in these cancer types. This review explores the growing evidence from multiple animal and in vitro models and from analysis of human tumors for the involvement of this pathway in the following: thyroid carcinoma subtypes, parathyroid carcinoma, pituitary tumors, adrenocortical carcinoma, phaeochromocytoma, neuroblastoma, and gastroenteropancreatic neuroendocrine tumors. While data are not always consistent, immunohistochemistry performed on human tumor tissue has been used alongside other techniques to demonstrate Akt overactivation. We review active Akt as a potential prognostic marker and the PI3K pathway as a therapeutic target in endocrine neoplasia.
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Affiliation(s)
- Helen Louise Robbins
- Department of General Surgery, University Hospital Coventry and Warwickshire, Coventry, UK
| | - Angela Hague
- School of Oral and Dental Sciences, School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
- *Correspondence: Angela Hague,
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Theiss AP, Chafin D, Bauer DR, Grogan TM, Baird GS. Immunohistochemistry of colorectal cancer biomarker phosphorylation requires controlled tissue fixation. PLoS One 2014; 9:e113608. [PMID: 25409462 PMCID: PMC4237459 DOI: 10.1371/journal.pone.0113608] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 10/28/2014] [Indexed: 12/31/2022] Open
Abstract
Phosphorylated signaling molecules are biomarkers of cancer pathophysiology and resistance to therapy, but because phosphoprotein analytes are often labile, poorly controlled clinical laboratory practices could prevent translation of research findings in this area from the bench to the bedside. We therefore compared multiple biomarker and phosphoprotein immunohistochemistry (IHC) results in 23 clinical colorectal carcinoma samples after either a novel, rapid tissue fixation protocol or a standard tissue fixation protocol employed by clinical laboratories, and we also investigated the effect of a defined post-operative "cold" ischemia period on these IHC results. We found that a one-hour cold ischemia interval, allowed by ASCO/CAP guidelines for certain cancer biomarker assays, is highly deleterious to certain phosphoprotein analytes, specifically the phosphorylated epidermal growth factor receptor (pEGFR), but shorter ischemic intervals (less than 17 minutes) facilitate preservation of phosphoproteins. Second, we found that a rapid 4-hour, two temperature, formalin fixation yielded superior staining in several cases with select markers (pEGFR, pBAD, pAKT) compared to a standard overnight room temperature fixation protocol, despite taking less time. These findings indicate that the future research and clinical utilities of phosphoprotein IHC for assessing colorectal carcinoma pathophysiology absolutely depend upon attention to preanalytical factors and rigorously controlled tissue fixation protocols.
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Affiliation(s)
- Abbey P. Theiss
- Ventana Medical Systems Inc., Tucson, Arizona, United States of America
| | - David Chafin
- Ventana Medical Systems Inc., Tucson, Arizona, United States of America
| | - Daniel R. Bauer
- Ventana Medical Systems Inc., Tucson, Arizona, United States of America
| | - Thomas M. Grogan
- Ventana Medical Systems Inc., Tucson, Arizona, United States of America
| | - Geoffrey S. Baird
- Department of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Pathology, University of Washington, Seattle, Washington, United States of America
- * E-mail:
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