1500 East Duarte Road
1500 East Duarte Road
Cao P.,Beckman Research Institute |
Mooney R.,Beckman Research Institute |
Tirughana R.,Beckman Research Institute |
Abidi W.,Beckman Research Institute |
And 11 more authors.
Bioconjugate Chemistry | Year: 2017
Ovarian cancer is particularly aggressive once it has metastasized to the abdominal cavity (stage III). Intraperitoneal (IP) as compared to intravenous (IV) administration of chemotherapy improves survival for stage III ovarian cancer, demonstrating that concentrating chemotherapy at tumor sites has therapeutic benefit; unfortunately, IP therapy also increases toxic side effects, thus preventing its completion in many patients. The ability to target chemotherapy selectively to ovarian tumors while sparing normal tissue would improve efficacy and decrease toxicities. We have previously shown that tumor-tropic neural stem cells (NSCs) dramatically improve the intratumoral distribution of nanoparticles (NPs) when given intracerebrally near an orthotopic brain tumor or into a flank xenograft tumor. Here, we show that NPs either conjugated to the surface of NSCs or loaded within the cells are selectively delivered to and distributed within ovarian tumors in the abdominal cavity following IP injection, with no evidence of localization to normal tissue. IP administration is significantly more effective than IV administration, and NPs carried by NSCs show substantially deeper penetration into tumors than free NPs. The NSCs and NPs target and localize to ovarian tumors within 1 h of administration. Pt-loaded silica NPs (SiNP[Pt]) were developed that can be transported in NSCs, and it was found that the NSC delivery of SiNP[Pt] (NSC-SiNP[Pt]) results in higher levels of Pt in tumors as compared to free drug or SiNP[Pt]. To the best of our knowledge, this work represents the first demonstration that cells given IP can target the delivery of drug-loaded NPs. © 2017 American Chemical Society.
Kaddis J.S.,1500 East Duarte Road |
Pugliese A.,University of Miami |
Atkinson M.A.,University of Florida
Current Opinion in Endocrinology, Diabetes and Obesity | Year: 2015
Purpose of review Since the inaugural year of its biobank in 2007, the Network for Pancreatic Organ Donors with Diabetes program has provided 70370 human samples to 127 investigators worldwide for projects focused on the pathogenesis of type 1 diabetes (T1D). The purpose of this review was to highlight major advances in our understanding of T1D using works that contain original data from experiments utilizing biospecimens provided by the Network for Pancreatic Organ Donors with Diabetes program. A total of 15 studies, published between 1 June 2013 and 31 December 2014, were selected using various search and filter strategies. Recent findings The type and frequency of B and/or T-cell immune markers in both the endocrine and exocrine compartments vary in T1D. Enterovirus signals have been identified as having new proteins in the extracellular matrix around infiltrated islets. Novel genes within human islet cell types have been shown to play a role in immunity, infiltration, inflammation, disease progression, cell mass and function. Various cytokines and a complement degradation product have also been detected in the blood or surrounding pancreatic ducts/vasculature. Summary These findings, from T1D donors across the disease spectrum, emphasize the notion that pathogenic heterogeneity is a hallmark of the disorder. © 2015 Wolters Kluwer Health, Inc.
Wolfson J.,1500 East Duarte Road |
Sun C.-L.,1500 East Duarte Road |
Kang T.,1500 East Duarte Road |
Wyatt L.,1500 East Duarte Road |
And 2 more authors.
Journal of the National Cancer Institute | Year: 2014
Results: In Cox regression analysis restricted to World Health Organization (WHO) grade II tumors, patients of all ages saw worse outcome if not treated at NCICCC/COG sites (non-NCICCC/COG vs NCICCC/COG: hazard ratio [HR] =1.73; 95% confidence interval [CI] = 1.09 to 2.72). Furthermore, the worse outcome for AYAs compared with children (HR = 1.90; 95% CI = 1.21 to 2.98; P = .005) was abrogated (HR = 1.35; 95% CI = 0.79 to 2.29; P = .27) by care at NCICCC/COGs. Those less likely to receive care at NCICCC/COG sites included young AYAs (aged 15-21 years vs children: odds ratio [OR] = 0.23; 95% CI = 0.11 to 0.48; P < .001) and older AYAs (aged 22-39 years) with low socioeconomic status (OR = 0.39; 95% CI = 0.17 to 0.89; P = .02), public/no insurance (OR = 0.30; 95% CI = 0.12 to 0.71; P < .01), and distance to care greater than 5 miles (OR = 0.29; 95% CI = 0.15 to 0.57; P < .001).Conclusions: Population-based data reveal that care at NCICCC/COG sites mitigates inferior outcome in AYAs with WHO grade II CNS tumors compared with children. Compared with children, AYAs are less likely to receive care at NCICCC/ COGs. Insurance, socioeconomic status, and distance serve as barriers to care at NCICCCs for older AYAs.Background: Adolescents and young adults (AYAs; aged 15-39 years) have inferior survival in comparison with younger (aged 0-14 years) cancer patients. Impact of care at specialized centers such as National Cancer Institute-designated Comprehensive Cancer Centers (NCICCC) for AYAs of all ages or the Children's Oncology Group (COG) for AYAs aged 15 to 21 years with central nervous system (CNS) tumors remains unstudied.Methods: We constructed a cohort of 560 children and 784 AYAs with CNS tumors reported to the Los Angeles cancer registry from 1998 to 2008. Cox and logistic regression models were used, with two-sided P values from Wald χ2 tests. © The Author 2014. Published by Oxford University Press. All rights reserved.
Otis-Green S.,1500 East Duarte Road |
Wakabayashi M.T.,1500 East Duarte Road |
Morgan R.,1500 East Duarte Road |
Hakim A.,1500 East Duarte Road |
And 4 more authors.
Journal of Palliative Medicine | Year: 2013
Intraperitoneal chemotherapy poses both potential benefits as a cancer treatment and negative consequences on patient and family quality of life. The profound multi-dimensional quality of life impact of intraperitoneal (IP) chemotherapy upon women with advanced ovarian cancer makes the early integration of palliative care particularly important for this population. Numerous opportunities occur throughout the treatment process to improve the delivery of biopsychosocial-spiritual support to women receiving IP chemotherapy. © Copyright 2013, Mary Ann Liebert, Inc.