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Immune Checkpoint Inhibition and Single Fraction Stereotactic Radiosurgery in Non-Small Cell Lung Cancer Brain Metastases: An International Multicenter Study of 395 Patients. Int J Radiat Oncol Biol Phys 2023; 117:e127-e128. [PMID: 37784682 DOI: 10.1016/j.ijrobp.2023.06.923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Brain metastases most commonly arise from non-small cell lung cancer (NSCLC). In recent years, immune checkpoint inhibitors (ICI) have demonstrated improvements in overall survival (OS) in NSCLC. However, concerns remain about the risk of radiation necrosis (RN) when ICI are administered with stereotactic radiosurgery (SRS). MATERIALS/METHODS Logistic regression was used to evaluate prognostic factors associated with the development of any grade RN and symptomatic RN. Cumulative incidence of RN was evaluated using competing risks analysis and the Fine and Gray model, where the null hypothesis was rejected for p < 0.05. RESULTS There were 395 patients with 2,513 brain metastases treated across 11 international institutions included in the analysis. The median follow-up was 14.2 months. Median patient age was 67 years (Interquartile Range [IQR]: 61-73), 53.4% were male, the median Karnofsky Performance Status was 80 (IQR: 80-90), and 88.6% has active extracranial disease at the time of SRS. The median margin dose was 19 Gy (IQR: 18-20), 97.5% of patients were treated on the Gamma Knife ®, 3.8% underwent prior whole brain radiation therapy (WBRT). The median V12 Gy was 5.2 cm3 and 36.5% of patients had a V12 Gy ≥ 10 cm3, anti-PD-1 agents were administered in 91.6% of patients. A V12 Gy ³ 10 cm3 was associated with an increased risk of developing any grade RN; odds ratio (OR): 2.12, p = 0.04 and OR: 2.18; p = 0.03 on univariable and multivariable analysis, respectively. Similarly, a V12 Gy ≥ 10 cm3 was associated with an increased risk of developing symptomatic RN; OR: 3.80, p = 0.003 and OR: 3.95; p = 0.003 on univariable and multivariable analysis, respectively. Receipt of concurrent ICI and prior WBRT were not statistically significant. At 1-year, the cumulative incidence of any grade and symptomatic RN was 4.8% and 3.8%, respectively. The cumulative incidence of any grade RN was 3.8% vs. 5.3% for the concurrent and non-concurrent groups at 1-year, respectively (p = 0.35). The cumulative incidence of symptomatic RN was 3.8% vs. 3.6% for the concurrent and non-concurrent groups at 1-year, respectively (p = 0.95). CONCLUSION The risk of any grade and symptomatic RN following SRS and ICI administration for NSCLC brain metastases increases as the V12 Gy exceeds 10 cm3. Concurrent ICI and SRS does not appear to increase this risk. Radiosurgical planning techniques should aim to minimize the V12 Gy.
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Breast Cancer Patients with ≥5 Involved Nodes: A Call for Surveillance Imaging in a High-Risk Population. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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3
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Social Isolation and Missed Radiotherapy Treatments: A Quality Improvement Project at a Safety-Net Hospital Radiation Oncology Clinic. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Vulnerable Populations Receiving Palliative Radiation in a Children’s Hospital: Reporting on the Underreported. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Applications of rapid prototyping teeth as surgical templates in autotransplantation. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
We report the identification of a photo-cleavable anionic surfactant, 4-hexylphenylazosulfonate (Azo) that can be rapidly degraded upon UV irradiation, for top-down proteomics. Azo can effectively solubilize proteins with performance comparable to SDS and is mass spectrometry (MS)-compatible. Importantly, Azo-aided top-down proteomics enables the solubilization of membrane proteins for comprehensive characterization of post-translational modifications. Moreover, Azo is simple to synthesize and can be used as a general SDS replacement in SDS-PAGE.
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Pediatric Palliative Radiation: Single Institution Practice Patterns and End of Life Outcomes. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Who is Tweeting in Oncology? Social Media (SM) Activity among Academic Leadership in 2018. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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MR Neurography of Greater Occipital Nerve Neuropathy: Initial Experience in Patients with Migraine. AJNR Am J Neuroradiol 2017; 38:2203-2209. [PMID: 28882864 DOI: 10.3174/ajnr.a5354] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 06/14/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND PURPOSE MR imaging of peripheral nerves (MR neurography) allows improved assessment of nerve anatomy and pathology. The objective of this study was to evaluate patients with unilateral occipital neuralgia using MR neurography and to assess the differences in greater occipital nerve signal and size between the symptomatic and asymptomatic sides. MATERIALS AND METHODS In this case-control evaluation using MR neurography, bilateral greater occipital nerve caliber, signal intensity, signal-to-noise ratios, and contrast-to-noise ratios were determined by 2 observers. RESULTS Among 18 subjects with unilateral occipital migraines, the average greater occipital nerve diameter for the symptomatic side was significantly greater at 1.77 ± 0.4 mm than for the asymptomatic side at 1.29 ± 0.25 mm (P = .001). The difference in nerve signal intensity between the symptomatic and asymptomatic sides was statistically significant at 269.06 ± 170.93 and 222.44 ± 170.46, respectively (P = .043). The signal-to-noise ratios on the symptomatic side were higher at 15.79 ± 4.59 compared with the asymptomatic nerve at 14.02 ± 5.23 (P = .009). Contrast-to-noise ratios were significantly higher on the symptomatic side than on the asymptomatic side at 2.57 ± 4.89 and -1.26 ± 5.02, respectively (P = .004). Intraobserver performance was good to excellent (intraclass coefficient correlation, 0.68-0.93), and interobserver performance was fair to excellent (intraclass coefficient correlation, 0.54-0.81). CONCLUSIONS MR neurography can be reliably used for the diagnosis of greater occipital nerve neuropathy in patients with unilateral occipital migraines with a good correlation of imaging findings to the clinical presentation.
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First-in-human Phase I study of bacterial RNA interference therapeutic CEQ508 in patients with familial adenomatous polyposis (FAP). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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11
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Enhanced antitumor activity of fixed-dose combinations of celecoxib and antihypertensives. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx390.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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IL-8 as a pharmacodynamic biomarker for TGF-β2 antisense (trabedersen) therapy: Results of a phase II trial. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx363.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Population pharmacokinetic analysis of OT-101 (trabedersen) in patients with advanced tumors. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx367.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Coupling functionalized cobalt ferrite nanoparticle enrichment with online LC/MS/MS for top-down phosphoproteomics. Chem Sci 2017; 8:4306-4311. [PMID: 28660060 PMCID: PMC5472028 DOI: 10.1039/c6sc05435h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/30/2017] [Indexed: 01/02/2023] Open
Abstract
An integrated top-down phosphoproteomics strategy enabled by functionalized cobalt ferrite nanoparticle enrichment and online LC/MS/MS for identification, quantification, and characterization of low abundance phosphoproteins is presented.
Phosphorylation plays pivotal roles in cellular processes and dysregulated phosphorylation is considered as an underlying mechanism in many human diseases. Top-down mass spectrometry (MS) analyzes intact proteins and provides a comprehensive analysis of protein phosphorylation. However, top-down MS-based phosphoproteomics is challenging due to the difficulty in enriching low abundance intact phosphoproteins as well as separating and detecting the enriched phosphoproteins from complex mixtures. Herein, we have designed and synthesized the next generation functionalized superparamagnetic cobalt ferrite (CoFe2O4) nanoparticles (NPs), and have further developed a top-down phosphoproteomics strategy coupling phosphoprotein enrichment enabled by the functionalized CoFe2O4 NPs with online liquid chromatography (LC)/MS/MS for comprehensive characterization of phosphoproteins. We have demonstrated the highly specific enrichment of a minimal amount of spike-in β-casein from a complex tissue lysate as well as effective separation and quantification of its phosphorylated genetic variants. More importantly, this integrated top-down phosphoproteomics strategy allows for enrichment, identification, quantification, and comprehensive characterization of low abundance endogenous phosphoproteins from complex tissue extracts on a chromatographic time scale.
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Abstract
Biologically relevant monolayer and bilayer films often consist of micron-scale high viscosity domains in a continuous low viscosity matrix. Here we show that this morphology can cause the overall monolayer fluidity to vary by orders of magnitude over a limited range of monolayer compositions. Modeling the system as a two-dimensional suspension in analogy with classic three-dimensional suspensions of hard spheres in a liquid solvent explains the rheological data with no adjustable parameters. In monolayers with ordered, highly viscous domains dispersed in a continuous low viscosity matrix, the surface viscosity increases as a power law with the area fraction of viscous domains. Changing the phase of the continuous matrix from a disordered fluid phase to a more ordered, condensed phase dramatically changes the overall monolayer viscosity. Small changes in the domain density and/or continuous matrix composition can alter the monolayer viscosity by orders of magnitude.
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Carrier Decay Properties of Mixed Cation Formamidinium-Methylammonium Lead Iodide Perovskite [HC(NH 2) 2] 1-x[CH 3NH 3] xPbI 3 Nanorods. J Phys Chem Lett 2016; 7:5036-5043. [PMID: 27973912 DOI: 10.1021/acs.jpclett.6b01958] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Organic-inorganic lead iodide perovskites are efficient materials for photovoltaics and light-emitting diodes. We report carrier decay dynamics of nanorods of mixed cation formamidinium and methylammonium lead iodide perovskites [HC(NH2)2]1-x[CH3NH3]xPbI3 (FA1-xMAxPbI3) synthesized through a simple solution method. The structure and FA/MA composition ratio of the single-crystal FA1-xMAxPbI3 nanorods are fully characterized, which shows that the mixed cation FA1-xMAxPbI3 nanorods are stabilized in the perovskite structure. The photoluminescence (PL) emission from FA1-xMAxPbI3 nanorods continuously shifts from 821 to 782 nm as the MA ratio (x) increases from 0 to 1 and is shown to be inhomogeneously broadened. Time-resolved PL from individual FA1-xMAxPbI3 nanorods demonstrates that lifetimes of mixed cation FA1-xMAxPbI3 nanorods are longer than those of the pure FAPbI3 or MAPbI3 nanorods, and the FA0.4MA0.6PbI3 displays the longest average PL lifetime of about 2 μs. These results suggest that mixed cation FA1-xMAxPbI3 perovskites are promising for high-efficiency photovoltaics and other optoelectronic applications.
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Shaping the Immune Landscape in Irradiated Breast Cancer Patients with Systemic TGF-β Blockade. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.09.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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The Impact of Radiation Cost on Patient Outcomes After Definitive Radiation Therapy in Prostate Cancer. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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A Family of Photolabile Nitroveratryl-Based Surfactants That Self-Assemble into Photodegradable Supramolecular Structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3963-9. [PMID: 27046005 PMCID: PMC4955541 DOI: 10.1021/acs.langmuir.6b00658] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Here we report the synthesis and characterization of a family of photolabile nitroveratryl-based surfactants that form different types of supramolecular structures depending on the alkyl chain lengths ranging from 8 to 12 carbon atoms. By incorporating a photocleavable α-methyl-o-nitroveratryl moiety, the surfactants can be degraded, along with their corresponding supramolecular structures, by light irradiation in a controlled manner. The self-assembly of the amphiphilic surfactants was characterized by conductometry to determine the critical concentration for the formation of the supramolecular structures, transmission electron microscopy to determine the size and shape of the supramolecular structures, and dynamic light scattering (DLS) to determine the hydrodynamic diameter of the structures in aqueous solutions. The photodegradation of the surfactants and the supramolecular structures was confirmed using UV-vis spectroscopy, mass spectrometry, and DLS. This surfactant family could be potentially useful in drug delivery, organic synthesis, and other applications.
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Nanowire Lasers of Formamidinium Lead Halide Perovskites and Their Stabilized Alloys with Improved Stability. NANO LETTERS 2016; 16:1000-8. [PMID: 26727024 DOI: 10.1021/acs.nanolett.5b04053] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The excellent intrinsic optoelectronic properties of methylammonium lead halide perovskites (MAPbX3, X = Br, I), such as high photoluminescence quantum efficiency, long carrier lifetime, and high gain coupled with the facile solution growth of nanowires make them promising new materials for ultralow-threshold nanowire lasers. However, their photo and thermal stabilities need to be improved for practical applications. Herein, we report a low-temperature solution growth of single crystal nanowires of formamidinium lead halide perovskites (FAPbX3) that feature red-shifted emission and better thermal stability compared to MAPbX3. We demonstrate optically pumped room-temperature near-infrared (∼820 nm) and green lasing (∼560 nm) from FAPbI3 (and MABr-stabilized FAPbI3) and FAPbBr3 nanowires with low lasing thresholds of several microjoules per square centimeter and high quality factors of about 1500-2300. More remarkably, the FAPbI3 and MABr-stabilized FAPbI3 nanowires display durable room-temperature lasing under ∼10(8) shots of sustained illumination of 402 nm pulsed laser excitation (150 fs, 250 kHz), substantially exceeding the stability of MAPbI3 (∼10(7) laser shots). We further demonstrate tunable nanowire lasers in wider wavelength region from FA-based lead halide perovskite alloys (FA,MA)PbI3 and (FA,MA)Pb(I,Br)3 through cation and anion substitutions. The results suggest that formamidinium lead halide perovskite nanostructures could be more promising and stable materials for the development of light-emitting diodes and continuous-wave lasers.
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Long-term Gastrointestinal Toxicity After Surgery and Radiation in Prostate Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Geographic Disparity in the Use of Hypofractionated Radiation Therapy Among Elderly Women Undergoing Breast Conservation for Invasive Breast Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Long-term Risks of Radiation Therapy for Stage II/III Rectal Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Subsequent Cancer-Directed Therapy After Radical Prostatectomy: A Population-Based Analysis. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Competing Event Models Improve Risk Stratification of Elderly Breast Cancer Patients. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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26
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Risk Factors for Esophageal Dilation in the Elderly Head and Neck Cancer Population. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Neural mechanisms of response inhibition and impulsivity in 22q11.2 deletion carriers and idiopathic attention deficit hyperactivity disorder. Neuroimage Clin 2015; 9:310-21. [PMID: 26509118 PMCID: PMC4588418 DOI: 10.1016/j.nicl.2015.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 07/31/2015] [Accepted: 08/13/2015] [Indexed: 10/26/2022]
Abstract
•22q11DS offers a compelling model to understand the neural substrates of attentional dysfunction.•First study directly comparing neural function in 22q11DS vs. ADHD patients•22q11DS and ADHD patients show a shared deficit in RI-related activation.•ADHD patients showed greater activity in the middle frontal gyrus than 22q11DS during RI.•Neural activity is inversely correlated with self-reported Cognitive Impulsivity in 22q11DS.
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Specific enrichment of phosphoproteins using functionalized multivalent nanoparticles. J Am Chem Soc 2015; 137:2432-5. [PMID: 25655481 DOI: 10.1021/ja511833y] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Analysis of protein phosphorylation remains a significant challenge due to the low abundance of phosphoproteins and the low stoichiometry of phosphorylation, which requires effective enrichment of phosphoproteins. Here we have developed superparamagnetic nanoparticles (NPs) whose surface is functionalized by multivalent ligand molecules that specifically bind to the phosphate groups on any phosphoproteins. These NPs enrich phosphoproteins from complex cell and tissue lysates with high specificity as confirmed by SDS-PAGE analysis with a phosphoprotein-specific stain and mass spectrometry analysis of the enriched phosphoproteins. This method enables universal and effective capture, enrichment, and detection of intact phosphoproteins toward a comprehensive analysis of the phosphoproteome.
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Abstract
Tissue proteomics is increasingly recognized for its role in biomarker discovery and disease mechanism investigation. However, protein solubility remains a significant challenge in mass spectrometry (MS)-based tissue proteomics. Conventional surfactants such as sodium dodecyl sulfate (SDS), the preferred surfactant for protein solubilization, are not compatible with MS. Herein, we have screened a library of surfactant-like compounds and discovered an MS-compatible degradable surfactant (MaSDeS) for tissue proteomics that solubilizes all categories of proteins with performance comparable to SDS. The use of MaSDeS in the tissue extraction significantly improves the total number of protein identifications from commonly used tissues, including tissue from the heart, liver, and lung. Notably, MaSDeS significantly enriches membrane proteins, which are often under-represented in proteomics studies. The acid degradable nature of MaSDeS makes it amenable for high-throughput MS-based proteomics. In addition, the thermostability of MaSDeS allows for its use in experiments requiring high temperature to facilitate protein extraction and solubilization. Furthermore, we have shown that MaSDeS outperforms the other MS-compatible surfactants in terms of overall protein solubility and the total number of identified proteins in tissue proteomics. Thus, the use of MaSDeS will greatly advance tissue proteomics and realize its potential in basic biomedical and clinical research. MaSDeS could be utilized in a variety of proteomics studies as well as general biochemical and biological experiments that employ surfactants for protein solubilization.
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IG-001—A Non-Biologic Micellar Paclitaxel Formulation for the Treatment of Metastatic Breast Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu071.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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P0157 Preclinical evaluation of NBN-paclitaxel in pancreatic cancer xenograft models. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Long-Term Outcomes of Orthotopic Heart Transplantation in Patients with Cardiac Amyloidosis: Differential Survival by Amyloid Type. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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201 THERAPEUTIC DRUG MONITORING (TDM) ASSAYS FOR LH AND FSH. Maturitas 2012. [DOI: 10.1016/s0378-5122(12)70312-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Size-controlled peptide-directed synthesis of hollow spherical gold nanoparticle superstructures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:1938-42. [PMID: 21638787 PMCID: PMC3412614 DOI: 10.1002/smll.201100477] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Indexed: 05/21/2023]
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Preparation of 1-D nanoparticle superstructures with tailorable thicknesses using gold-binding peptide conjugates. Chem Commun (Camb) 2011; 47:185-7. [DOI: 10.1039/c0cc02257h] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
MicroRNAs are gene regulators that work through a posttranscriptional repression mechanism. Dysregulation of microRNA expression could lead to a variety of disorders, in particular, human cancer, and has also been implicated in antihormone therapy resistance. However, little is known whether microRNAs have a role in estrogen-independent growth, leading to tamoxifen resistance in estrogen receptor (ER)-positive tumors. In this study, we use an in vivo selection system against a microRNA library using the MCF-7 model and demonstrate that miR-101 promotes estrogen-independent growth and causes the upregulation of phosphorylated Akt (pAkt) without impacting the ER level or activity. Importantly, although miR-101 suppresses cell growth in normal estradiol (E2)-containing medium, it promotes cell growth in E2-free medium. Moreover, estrogen deprivation greatly enhances miR-101-mediated Akt activation. Finally, we show that MAGI-2 (membrane-associated guanylate kinase), a scaffold protein required for PTEN (phosphatase and tensin homolog) activity, is a direct target for miR-101; suppression of MAGI-2 by miR-101 reduces PTEN activity, leading to Akt activation. Taken together, these results not only establish a role for miR-101 in estrogen-independent signaling but also provide a mechanistic link between miR-101 and Akt activation.
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SPARC microenvironment signature (SMS) in patients treated with nab-paclitaxel (nabP)/carboplatin (C)/bevacizumab(B) for triple-negative metastatic breast cancer (TNMBC). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e21040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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SPARC microenvironment signature (SMS) analysis of a phase II trial of neoadjuvant gemcitabine (G), epirubicin (E), and nab-paclitaxel ( nab-P) in locally advanced breast cancer (LABC). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Effect of plasma SPARC on outcome in cancer models. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Tumor SPARC microenvironment signature (SMS) and plasma levels in a phase II trial of unresectable stage IV melanoma treated with nab-paclitaxel and carboplatin: A translational study of NCCTG trial N057E. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Abstract
Abstract
Background: SPARC (Secreted Protein Acidic and Rich in Cysteine) is an albumin-binding glycoprotein overexpressed in breast cancer and is associated with poor prognosis and shorter overall survival. We have previously shown that SPARC expression appeared to correlate with response to nanoparticle albumin-bound (nab) paclitaxel (Abraxane) in head-and-neck and pancreatic-cancer patients. To further define the role of SPARC, recombinant-human SPARC (rhSPARC) was characterized to identify its albumin-binding and angiogenic domain.Materials and methods: The albumin-binding site on SPARC was defined by testing the binding of Alexa 488-labeled BSA to immobilized rhSPARC in a solid-phase-binding assay and in a competitive-binding assay in presence of increasing concentration of various SPARC-derived peptides. The angiogenic activity of rhSPARC was evaluated using a HUVEC tube-formation assay.Results: The SPARC albumin-binding assay revealed a pattern of saturable and specific binding with an estimated Kd of 700 µM very near the known plasma concentration of albumin (600 µM). Competitive binding with Cathepsin K-digested SPARC and SPARC-derived peptides defined the albumin-binding domain to be amino acids 209-223 in the C-terminal region. In the HUVEC tube-formation assay, rhSPARC was pro-angiogenic at 10 µg/ml and anti-angiogenic at 100 µg/ml. The angiogenic domain of SPARC was located to the C-terminal of SPARC.Discussion: The albumin-binding domain of SPARC was located to residues aa209-223, supporting its role as a target for nab-technology-based drug delivery. We confirmed that SPARC can promote angiogenesis at physiological concentrations, contributing to the role of SPARC in a more aggressive tumor phenotype. The angiogenic domain of SPARC is located within a 54-aa sequence of its C-terminus. SPARC could be a potential therapeutic target and a biomarker for predicting response to nab-paclitaxel.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 2144.
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1003 Identification of the albumin-binding domain and the angiogenic domain of SPARC. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)70296-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Abstract
e19015 Background: Lung cancer is the leading cause of cancer-related deaths. Better systemic therapies are needed. One potential therapeutic target is c-Src which is expressed and activated in NSCLC patient tumors where it can mediate invasion, angiogenesis, and proliferation. Additionally, epidermal growth factor receptor (EGFR) and c-Src cooperate to promote NSCLC survival. We are conducting a phase II study of dasatinib, a tyrosine kinase inhibitor of c-Src, Abl, c-Kit, PDGFR, Btk, and EphA2. The primary objective is to determine the rate of progression free survival at 12 weeks in patients with metastatic NSCLC treated with dasatinib as front line therapy. Methods: Patients with metastatic NSCLC were treated with dasatinib (100 mg BID), with PET/CT scans every 6 weeks. KRAS and EGFR mutations, EGFR copy number, and pSrc expression were measured in pre-treatment biopsies. Blood was collected pretreatment and on day 21 to measure drug exposure (PK), pharmacodynamics (PD), and serum cytokine levels. Results: Twenty five patients have enrolled on study. Of the 16 patients evaluable for response: 1 had a partial response (PR) with no evidence of recurrence for at least 18 months (male smoker with adenocarcinoma and KRAS mutation); 6 patients had stable disease (SD) which includes 3 patients with prolonged stable disease for 4, 6, and 18 months; 9 had progressive disease (PD). Only 4 patients had a significant change in SUV (>25%): decreased in 2 with PR and SD and increased in 2 with PD and SD. There is currently no clear association between EGFR and KRAS mutational analysis and response, although the sample number is small. Only 2 patients have activating EGFR mutations: one with SD and one with PD. PK, PD, and cytokine data will be presented. The most common grade 3/4 toxicity is dyspnea/pleural effusion that has led to a reduced dasatinib starting dose in subsequent patients. Conclusions: Dasatinib as a single agent has activity in a subset of patients with NSCLC. Planned correlative studies may lead to the discovery of biomarkers that predict response. Toxicities observed were consistent with prior dasatinib phase I studies in solid tumor patients. Supported by NCI/CTEP (NIH contract N01-CM-62202), The Commonwealth Foundation for Cancer Research and Bristol-Myers Squibb. [Table: see text]
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466. Peripheral Nerve Blocks for Ambulatory Surgery in a Private Practice Setting. Reg Anesth Pain Med 2008. [DOI: 10.1136/rapm-00115550-200809001-00308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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High Hiv Incidence among Drug Users in Hepatitis B Vaccination Project from Inner City Neighborhoods. Am J Epidemiol 2006. [DOI: 10.1093/aje/163.suppl_11.s194-c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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P.172 Functional comparison of the antagonism of hepatitis C virus genotype 1b and 2a nonstructural protein 5a to interferon antiviral activity. J Clin Virol 2006. [DOI: 10.1016/s1386-6532(06)80352-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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371 RETESTING FOR CHLAMYDIA TRACHOMATIS IN ADOLESCENTS: HOW WELL ARE WE DOING?:. J Investig Med 2005. [DOI: 10.2310/6650.2005.00005.370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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358 TREATMENT AND FOLLOW-UP OF ADOLESCENTS WITH CHLAMYDIA TRACHOMATIS INFECTIONS. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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