During pancreatic development, proliferating pancreatic progenitors activate the proendocrine transcription factor neurogenin 3 (NEUROG3), exit the cell cycle, and differentiate into islet cells. The mechanisms that direct robust NEUROG3 expression within a subset of progenitor cells control the size of the endocrine population. Here we demonstrate that NEUROG3 is phosphorylated within the nucleus on serine 183, which catalyzes its hyperphosphorylation…
Read More
Human papillomavirus (HPV) vaccines were originally approved with 3-dose schedules. However, 2 doses of HPV vaccine have been recommended1 for girls younger than 15 years based on antibody response at 36 months,2,3although continued research on the duration of antibody persistence was advised. We report antibody response at 60 months after 2 doses of quadrivalent HPV vaccine. Read More
Read More
My team focuses on development of novel innovative technology for cancer therapeutics and diagnostics. A major focus of the lab is on the identification of oncofetal proteins and secondary protein modifications such as glycosylation’s that can be potentially exploited as cancer targets in the clinic. We are more technology focused than disease focused in the sense that we are generally...
Read More
An early report on the molecular subtyping of muscle-invasive bladder cancer (MIBC) by gene expression suggested that response to neoadjuvant chemotherapy (NAC) varies by subtype. To investigate the ability of molecular subtypes to predict pathological downstaging and survival after NAC. Whole transcriptome profiling was performed on pre-NAC transurethral resection specimens from 343 patients with MIBC. Samples were classified according to four published…
Read More
Tyrosine kinase inhibitor (TKI) therapies induce clinical remission with remarkable effects on chronic myeloid leukemia (CML). However, very few TKIs completely eradicate the leukemic clone and persistence of leukemic stem cells (LSCs) remains challenging, warranting new, distinct targets for improved treatments. We demonstrated that the scaffold protein AHI-1 is highly deregulated in LSCs and interacts with multiple proteins, including Dynamin-2…
Read More
Alterations in cellular aging, indexed by leukocyte telomere length (LTL) and mitochondrial DNA copy number (mtDNAcn), might partly account for the increased health risks in persons with depression. Although some studies indeed found cross-sectional associations of depression with LTL and mtDNAcn, the longitudinal associations remain unclear. This 10-year longitudinal study examined between- and within-person associations of depressive symptoms with LTL…
Read More
Background People with Parkinson’s disease can show premotor neurochemical changes in the dopaminergic and non-dopaminergic systems. Using PET, we assessed whether dopaminergic and serotonin transporter changes are similar in LRRK2 mutation carriers with Parkinson’s disease and individuals with sporadic Parkinson’s disease, and whether LRRK2 mutation carriers without motor symptoms show PET changes. Methods We did two cross-sectional PET studies at…
Read More
Background Clinical grading systems using clinical features alongside nomograms lack precision in guiding treatment decisions in prostate cancer (PCa). There is a critical need for identification of biomarkers that can more accurately stratify patients with primary PCa. Objective To identify a robust prognostic signature to better distinguish indolent from aggressive prostate cancer (PCa). Design, setting, and participants To develop the…
Read More
ABSTRACT: Nonsense mutations underlie about 10% of rare genetic disease cases. They introduce a premature termination codon (PTC) and prevent the formation of full-length protein. Pharmaceutical gentamicin, a mixture of several related aminoglycosides, is a frequently used antibiotic in humans that can induce PTC readthrough and suppress nonsense mutations at high concentrations. However, testing of gentamicin in clinical trials has shown…
Read More
ABSTRACT: A mild and selective photocatalytic C-H 18F-fluorination reaction has been developed that provides direct access to 18F-fluorinated aminoacids. The biodistribution and uptake of three 18F-labeled leucine analogues via LAT1 mediated transport in several cancer cell lines is reported. Positron emission tomography imaging of mice bearing PC3 (prostate) or U87 (glioma) xenografts using 5-[18F]-fluorohomoleucine showed high tumor uptake and excellent…
Read More