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Agarwal N, Machiels JP, Suárez C, Lewis N, Higgins M, Wisinski K, Awada A, Maur M, Stein M, Hwang A, Mosher R, Wasserman E, Wu G, Zhang H, Zieba R, Elmeliegy M. Phase I Study of the Prolactin Receptor Antagonist LFA102 in Metastatic Breast and Castration-Resistant Prostate Cancer. Oncologist 2016; 21:535-6. [PMID: 27091421 PMCID: PMC4861370 DOI: 10.1634/theoncologist.2015-0502] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 01/11/2016] [Indexed: 11/17/2022] Open
Abstract
LESSONS LEARNED Despite evidence for a role for prolactin signaling in breast and prostate tumorigenesis, a prolactin receptor-binding monoclonal antibody has not produced clinical efficacy.Increased serum prolactin levels may be a biomarker for prolactin receptor inhibition.Results from the pharmacokinetic and pharmacodynamics (PD) studies suggest that inappropriately long dosing intervals and insufficient exposure to LFA102 may have resulted in lack of antitumor efficacy.Based on preclinical data, combination therapy of LFA102 with those novel agents targeting hormonal pathways in metastatic castration-resistant prostate cancer and metastatic breast cancer is promising.Given the PD evidence of prolactin receptor blockade by LFA102, this drug has the potential to be used in conditions such as hyperprolactinemia that are associated with high prolactin levels. BACKGROUND Prolactin receptor (PRLR) signaling is implicated in breast and prostate cancer. LFA102, a humanized monoclonal antibody (mAb) that binds to and inhibits the PRLR, has exhibited promising preclinical antitumor activity. METHODS Patients with PRLR-positive metastatic breast cancer (MBC) or metastatic castration-resistant prostate cancer (mCRPC) received doses of LFA102 at 3-60 mg/kg intravenously once every 4 weeks. Objectives were to determine the maximum tolerated dose (MTD) and/or recommended dose for expansion (RDE) to investigate the safety/tolerability of LFA102 and to assess pharmacokinetics (PK), pharmacodynamics (PD), and antitumor activity. RESULTS A total of 73 patients were enrolled at 5 dose levels. The MTD was not reached because of lack of dose-limiting toxicities. The RDE was established at 60 mg/kg based on PK and PD analysis and safety data. The most common all-cause adverse events (AEs) were fatigue (44%) and nausea (33%) regardless of relationship. Grade 3/4 AEs reported to be related to LFA102 occurred in 4% of patients. LFA102 exposure increased approximately dose proportionally across the doses tested. Serum prolactin levels increased in response to LFA102 administration, suggesting its potential as a biomarker for PRLR inhibition. No antitumor activity was detected. CONCLUSION Treatment with LFA102 was safe and well tolerated, but did not show antitumor activity as monotherapy at the doses tested.
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Affiliation(s)
- Neeraj Agarwal
- Huntsman Cancer Institute, Division of Medical Oncology, Department of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Jean-Pascal Machiels
- Roi Albert II Institute, Medical Oncology Service, University Clinic Saint Luc and Institute of Experimental and Clinical Research (Pôle Molecular Imaging, Radiotherapy & Oncology), Catholic University of Louvain, Brussels, Belgium
| | - Cristina Suárez
- Vall d'Hebron University Hospital, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Nancy Lewis
- Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Michaela Higgins
- Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Kari Wisinski
- University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
| | | | - Michela Maur
- Oncology Unit, Department of Oncology, Hematology and Respiratory Disease, University Hospital Policlinico of Modena, Modena, Italy
| | - Mark Stein
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - Andy Hwang
- Novartis Pharmaceutical Corporation, East Hanover, New Jersey, USA
| | | | | | - Gang Wu
- Novartis Pharmaceutical Corporation, East Hanover, New Jersey, USA
| | - Hefei Zhang
- Novartis Pharmaceutical Corporation, East Hanover, New Jersey, USA
| | - Renata Zieba
- Novartis Pharmaceutical Corporation, East Hanover, New Jersey, USA
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Puig O, Yuan J, Stepaniants S, Zieba R, Zycband E, Morris M, Coulter S, Yu X, Menke J, Woods J, Chen F, Ramey DR, He X, O'Neill EA, Hailman E, Johns DG, Hubbard BK, Yee Lum P, Wright SD, Desouza MM, Plump A, Reiser V. A gene expression signature that classifies human atherosclerotic plaque by relative inflammation status. ACTA ACUST UNITED AC 2011; 4:595-604. [PMID: 22010137 DOI: 10.1161/circgenetics.111.960773] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Atherosclerosis is a complex disease requiring improvements in diagnostic techniques and therapeutic treatments. Both improvements will be facilitated by greater exploration of the biology of atherosclerotic plaque. To this end, we carried out large-scale gene expression analysis of human atherosclerotic lesions. METHODS AND RESULTS Whole genome expression analysis of 101 plaques from patients with peripheral artery disease identified a robust gene signature (1514 genes) that is dominated by processes related to Toll-like receptor signaling, T-cell activation, cholesterol efflux, oxidative stress response, inflammatory cytokine production, vasoconstriction, and lysosomal activity. Further analysis of gene expression in microdissected carotid plaque samples revealed that this signature is differentially expressed in macrophage-rich and smooth muscle cell-containing regions. A quantitative PCR gene expression panel and inflammatory composite score were developed on the basis of the atherosclerotic plaque gene signature. When applied to serial sections of carotid plaque, the inflammatory composite score was observed to correlate with histological and morphological features related to plaque vulnerability. CONCLUSIONS The robust mRNA expression signature identified in the present report is associated with pathological features of vulnerable atherosclerotic plaque and may be useful as a source of biomarkers and targets of novel antiatherosclerotic therapies.
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Affiliation(s)
- Oscar Puig
- Department of Molecular Profiling,, Merck Research Laboratories, Rahway, NJ 07033, USA.
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Reiser V, Smith RC, Xue J, Kurtz MM, Liu R, Legrand C, He X, Yu X, Wong P, Hinchcliffe JS, Tanen MR, Lazar G, Zieba R, Ichetovkin M, Chen Z, O'Neill EA, Tanaka WK, Marton MJ, Liao J, Morris M, Hailman E, Tokiwa GY, Plump AS. High-throughput simultaneous analysis of RNA, protein, and lipid biomarkers in heterogeneous tissue samples. Clin Chem 2011; 57:1545-55. [PMID: 21914789 DOI: 10.1373/clinchem.2010.157743] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND With expanding biomarker discovery efforts and increasing costs of drug development, it is critical to maximize the value of mass-limited clinical samples. The main limitation of available methods is the inability to isolate and analyze, from a single sample, molecules requiring incompatible extraction methods. Thus, we developed a novel semiautomated method for tissue processing and tissue milling and division (TMAD). METHODS We used a SilverHawk atherectomy catheter to collect atherosclerotic plaques from patients requiring peripheral atherectomy. Tissue preservation by flash freezing was compared with immersion in RNAlater®, and tissue grinding by traditional mortar and pestle was compared with TMAD. Comparators were protein, RNA, and lipid yield and quality. Reproducibility of analyte yield from aliquots of the same tissue sample processed by TMAD was also measured. RESULTS The quantity and quality of biomarkers extracted from tissue prepared by TMAD was at least as good as that extracted from tissue stored and prepared by traditional means. TMAD enabled parallel analysis of gene expression (quantitative reverse-transcription PCR, microarray), protein composition (ELISA), and lipid content (biochemical assay) from as little as 20 mg of tissue. The mean correlation was r = 0.97 in molecular composition (RNA, protein, or lipid) between aliquots of individual samples generated by TMAD. We also demonstrated that it is feasible to use TMAD in a large-scale clinical study setting. CONCLUSIONS The TMAD methodology described here enables semiautomated, high-throughput sampling of small amounts of heterogeneous tissue specimens by multiple analytical techniques with generally improved quality of recovered biomolecules.
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Affiliation(s)
- Vladimír Reiser
- Merck Sharp & Dohme Corporation, Whitehouse Station, NJ, USA.
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Kim YK, Kim SJ, Yatani A, Huang Y, Castelli G, Vatner DE, Liu J, Zhang Q, Diaz G, Zieba R, Thaisz J, Drusco A, Croce C, Sadoshima J, Condorelli G, Vatner SF. Mechanism of enhanced cardiac function in mice with hypertrophy induced by overexpressed Akt. J Biol Chem 2003; 278:47622-8. [PMID: 13129932 DOI: 10.1074/jbc.m305909200] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Transgenic mice with cardiac-specific overexpression of active Akt (TG) not only exhibit hypertrophy but also show enhanced left ventricular (LV) function. In 3-4-month-old TG, heart/body weight was increased by 60% and LV ejection fraction was elevated (84 +/- 2%, p < 0.01) compared with nontransgenic littermates (wild type (WT)) (73 +/- 1%). An increase in isolated ventricular myocyte contractile function (% contraction) in TG compared with WT (6.1 +/- 0.2 versus 3.5 +/- 0.2%, p < 0.01) was associated with increased Fura-2 Ca2+ transients (396 +/- 50 versus 250 +/- 24 nmol/liter, p < 0.05). The rate of relaxation (+dL/dt) was also enhanced in TG (214 +/- 15 versus 98 +/- 18 microm/s, p < 0.01). L-type Ca2+ current (ICa) density was increased in TG compared with WT (-9.0 +/- 0.3 versus 7.2 +/- 0.3 pA/pF, p < 0.01). Sarcoplasmic reticulum Ca2+ ATPase 2a (SERCA2a) protein levels were increased (p < 0.05) by 6.6-fold in TG, which could be recapitulated in vitro by adenovirus-mediated overexpression of Akt in cultured adult ventricular myocytes. Conversely, inhibiting SERCA with either ryanodine or thapsigargin affected myocyte contraction and relaxation and Ca2+ channel kinetics more in TG than in WT. Thus, myocytes from mice with overexpressed Akt demonstrated enhanced contractility and relaxation, Fura-2 Ca2+ transients, and Ca2+ channel currents. Furthermore, increased protein expression of SERCA2a plays an important role in mediating enhanced LV function by Akt. Up-regulation of SERCA2a expression and enhanced LV myocyte contraction and relaxation in Akt-induced hypertrophy is opposite to the down-regulation of SERCA2a and reduced contractile function observed in many other forms of LV hypertrophy.
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Affiliation(s)
- Young-Kwon Kim
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, University of Medicine and Dentistry New Jersey, New Jersey Medical School, Newark, New Jersey 07101-1709, USA
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Zieba R, Malinowska K, Wiewiórowski M, Graczyk J. New tumor--inhibiting cisplatin analogues. Acta Pol Pharm 2000; 57 Suppl:136-8. [PMID: 11293245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- R Zieba
- Department of Pharmacodynamics, Medical University of Łódź, 1 Muszyńskiego Str., Poland
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