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Medicine and Health Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

University Faculty Publications and Creative Works

2012

Articles 1 - 4 of 4

Full-Text Articles in Medicine and Health Sciences

Gene Expression In Human Accessory Lacrimal Glands Of Wolfring, John L. Ubels, Ilene K. Gipson, Sandra J. Spurr-Michaud, Ann S. Tisdale Oct 2012

Gene Expression In Human Accessory Lacrimal Glands Of Wolfring, John L. Ubels, Ilene K. Gipson, Sandra J. Spurr-Michaud, Ann S. Tisdale

University Faculty Publications and Creative Works

The accessory lacrimal glands are assumed to contribute to the production of tear fluid, but little is known about their function. The goal of this study was to conduct an analysis of gene expression by glands of Wolfring that would provide a more complete picture of the function of these glands. METHODS: Glands of Wolfring were isolated from frozen sections of human eyelids by laser microdissection. RNA was extracted from the cells and hybridized to gene expression arrays. The expression of several of the major genes was confirmed by immunohistochemistry. RESULTS: Of the 24 most highly expressed genes, 9 were …


Gene Expression In Human Accessory Lacrimal Glands Of Wolfring, John L. Ubels, Ilene K. Gipson, Sandra J. Spurr-Michaud, Ann S. Tisdale Oct 2012

Gene Expression In Human Accessory Lacrimal Glands Of Wolfring, John L. Ubels, Ilene K. Gipson, Sandra J. Spurr-Michaud, Ann S. Tisdale

University Faculty Publications and Creative Works

PURPOSE: The accessory lacrimal glands are assumed to contribute to the production of tear fluid, but little is known about their function. The goal of this study was to conduct an analysis of gene expression by glands of Wolfring that would provide a more complete picture of the function of these glands. METHODS: Glands of Wolfring were isolated from frozen sections of human eyelids by laser microdissection. RNA was extracted from the cells and hybridized to gene expression arrays. The expression of several of the major genes was confirmed by immunohistochemistry. RESULTS: Of the 24 most highly expressed genes, 9 …


Biophysical Characterization Of A Riboflavin-Conjugated Dendrimer Platform For Targeted Drug Delivery, Amanda B. Witte, Christine M. Timmer, Jeremy J. Gam, Seok Ki Choi Feb 2012

Biophysical Characterization Of A Riboflavin-Conjugated Dendrimer Platform For Targeted Drug Delivery, Amanda B. Witte, Christine M. Timmer, Jeremy J. Gam, Seok Ki Choi

University Faculty Publications and Creative Works

The present study describes the biophysical characterization of generation-five poly(amidoamine) (PAMAM) dendrimers conjugated with riboflavin (RF) as a cancer-targeting platform. Two new series of dendrimers were designed, each presenting the riboflavin ligand attached at a different site (isoalloxazine at N-3 and d-ribose at N-10) and at varying ligand valency. Isothermal titration calorimetry (ITC) and differential scanning calorimetry (DSC) were used to determine the binding activity for riboflavin binding protein (RfBP) in a cell-free solution. The ITC data shows dendrimer conjugates have K D values of ≥465 nM on a riboflavin basis, an affinity ∼93-fold lower than that of free riboflavin. …


Biophysical Characterization Of A Riboflavin-Conjugated Dendrimer Platform For Targeted Drug Delivery, Amanda B. Witte, Christine M. Timmer, Jeremy J. Gam, Seok Ki Choi Feb 2012

Biophysical Characterization Of A Riboflavin-Conjugated Dendrimer Platform For Targeted Drug Delivery, Amanda B. Witte, Christine M. Timmer, Jeremy J. Gam, Seok Ki Choi

University Faculty Publications and Creative Works

The present study describes the biophysical characterization of generation-five poly(amidoamine) (PAMAM) dendrimers conjugated with riboflavin (RF) as a cancer-targeting platform. Two new series of dendrimers were designed, each presenting the riboflavin ligand attached at a different site (isoalloxazine at N-3 and d-ribose at N-10) and at varying ligand valency. Isothermal titration calorimetry (ITC) and differential scanning calorimetry (DSC) were used to determine the binding activity for riboflavin binding protein (RfBP) in a cell-free solution. The ITC data shows dendrimer conjugates have K D values of ≥465 nM on a riboflavin basis, an affinity ∼93-fold lower than that of free riboflavin. …