Search results for: Mark M. Banaszak Holl

Items from 1 to 20 out of 106 results

article

A Homochiral Porous Organic Cage‐Polymer Membrane for Enantioselective Resolution

Fanmengjing Wang, Kaiqiang He, Ruoxin Wang, Hongyu Ma, more

Advanced Materials > 36 > 29 > n/a - n/a

Membrane‐based enantioselective separation is a promising method for chiral resolution due to its low cost and high efficiency. However, scalable fabrication of chiral separation membranes displaying both high enantioselectivity and high flux of enantiomers is still a challenge. Here, the authors report the preparation of homochiral porous organic cage (Covalent cage 3 (CC3)‐R)‐based enantioselective...

article

A Homochiral Poly(2‐oxazoline)‐based Membrane for Efficient Enantioselective Separation

Fanmengjing Wang, David Pizzi, Yizhihao Lu, Kaiqiang He, more

Angewandte Chemie > 135 > 8 > n/a - n/a

Chiral separation membranes have shown great potential for the efficient separation of racemic mixtures into enantiopure components for many applications, such as in the food and pharmaceutical industries; however, scalable fabrication of membranes with both high enantioselectivity and flux remains a challenge. Herein, enantiopure S‐poly(2,4‐dimethyl‐2‐oxazoline) (S‐PdMeOx) macromonomers were synthesized...

article

A Homochiral Poly(2‐oxazoline)‐based Membrane for Efficient Enantioselective Separation

Fanmengjing Wang, David Pizzi, Yizhihao Lu, Kaiqiang He, more

Angewandte Chemie International Edition > 62 > 8 > n/a - n/a

article

Frontispiz: Homochiral MOF–Polymer Mixed Matrix Membranes for Efficient Separation of Chiral Molecules

Yizhihao Lu, Huacheng Zhang, Jun Yong Chan, Ranwen Ou, more

Angewandte Chemie > 131 > 47 > n/a - n/a

Mischmatrix‐Membranen Im Forschungsartikel auf S. 17084 beschreiben H. Zhang, H. Wang et al. die Herstellung von homochiralen Mischmatrix‐Membranen durch den Einbau von MOFs in eine Polymermatrix. Die Membranen sind hoch enantioselektiv bei der Trennung von racemischem 1‐Phenylethanol.

article

Homochiral MOF–Polymer Mixed Matrix Membranes for Efficient Separation of Chiral Molecules

Yizhihao Lu, Huacheng Zhang, Jun Yong Chan, Ranwen Ou, more

Angewandte Chemie > 131 > 47 > 17084 - 17091

Homochiral metal–organic framework (MOF) membranes have been recently reported for chiral separations. However, only a few high‐quality homochiral polycrystalline MOF membranes have been fabricated due to the difficulty in crystallization of a chiral MOF layer without defects on porous substrates. Alternatively, mixed matrix membranes (MMMs), which combine potential advantages of MOFs and polymers,...

article

Frontispiece: Homochiral MOF–Polymer Mixed Matrix Membranes for Efficient Separation of Chiral Molecules

Yizhihao Lu, Huacheng Zhang, Jun Yong Chan, Ranwen Ou, more

Angewandte Chemie International Edition > 58 > 47 > n/a - n/a

Mixed‐Matrix Membranes In their Research Article on page 16928, H. Zhang, H. Wang et al. report the synthesis of homochiral mixed matrix membranes show excellent enantioselectivity for racemic 1‐phenylethanol by incorporation of MOFs into a polymer matrix.

article

Homochiral MOF–Polymer Mixed Matrix Membranes for Efficient Separation of Chiral Molecules

Yizhihao Lu, Huacheng Zhang, Jun Yong Chan, Ranwen Ou, more

Angewandte Chemie International Edition > 58 > 47 > 16928 - 16935

article

Tailoring dendrimer conjugates for biomedical applications: the impact of altering hydrophobicity

Mark M. Banaszak Holl, Casey A. Dougherty, Sriram Vaidyanathan

Journal of Nanoparticle Research > 2018 > 20 > 10 > 1-7

Hydrophobicity is known to play a key role in the biological distribution of materials but is often an overlooked parameter when conjugating targeting agents, drugs, and dyes to dendrimers. This review examines the impact of hydrophobic variation in stochastically conjugated dendrimers as well as materials where synthetic methods or approaches to purification provide more controlled samples. Hydrophobic...

article

Microstructure dependent binding of pigment epithelium derived factor (PEDF) to type I collagen fibrils

Meagan Cauble, Phillip Yang, Ulrich Baumann, Jan M. Gebauer, more

Journal of Structural Biology > 2017 > 199 > 2 > 132-139

Pigment epithelium derived factor (PEDF) is a multifunctional extracellular protein. In addition to its known anti-angiogenic and neurotrophic roles in collagen rich tissues, PEDF is thought to be involved in collagen fibril assembly due to its sequence specific binding to the collagen fibril and high expression in regions of active bone formation. In order to image the presence of the protein on...

article

Nanostructured materials for microwave receptors

Kazem Majdzadeh-Ardakani, Mark M. Banaszak Holl

Progress in Materials Science > 2017 > 87 > C > 221-245

Microwave heating promises numerous benefits over conventional heating including rapid thermal ramps, energy transfer rather than heat transfer, material selectivity, and improved automation and safety. This set of advantages has led to growing application in industrial processes. Currently, use of microwave heating is restricted because many materials of interest have poor dielectric loss properties...

article

Estrogen depletion and drug treatment alter the microstructure of type I collagen in bone

Meagan A. Cauble, Matthew J. Muckley, Ming Fang, Jeffrey A. Fessler, more

Bone Reports > 2016 > 5 > Complete > 243-251

The impact of estrogen depletion and drug treatment on type I collagen fibril nanomorphology and collagen fibril packing (microstructure) was evaluated by atomic force microscopy (AFM) using an ovariectomized (OVX) rabbit model of estrogen deficiency induced bone loss. Nine month-old New Zealand white female rabbits were treated as follows: sham-operated (Sham; n=11), OVX+vehicle (OVX+Veh; n=12),...

article

In vivo targeting of metastatic breast cancer via tumor vasculature-specific nano-graphene oxide

Dongzhi Yang, Liangzhu Feng, Casey A. Dougherty, Kathryn E. Luker, more

Biomaterials > 2016 > 104 > C > 361-371

Angiogenesis, i.e. the formation of neovasculatures, is a critical process during cancer initiation, progression, and metastasis. Targeting of angiogenic markers on the tumor vasculature can result in more efficient delivery of nanomaterials into tumor since no extravasation is required. Herein we demonstrated efficient targeting of breast cancer metastasis in an experimental murine model with nano-graphene...

article

G5-PEG PAMAM dendrimer incorporating nanostructured lipid carriers enhance oral bioavailability and plasma lipid-lowering effect of probucol

Rong Qi, Yan-zhi Li, Mao-mao Yu, Wen-wen Shen, more

Nanomedicine: Nanotechnology, Biology and Medicine > 2016 > 12 > 2 > 509-510

article

G5-PEG PAMAM dendrimer incorporating nanostructured lipid carriers enhance oral bioavailability and plasma lipid-lowering effect of probucol

Rong Qi, Yan-zhi Li, Cong Chen, Yi-ni Cao, more

Journal of Controlled Release > 2015 > 210 > C > 160-168

This work aimed to improve the oral bioavailability and plasma lipid-lowering effect of probucol (PB) by constructing a combined drug delivery system (CDDS) composed of nanostructured lipid carrier (NLC) and PEGylated poly(amidoamine) dendrimer (PEG-PAMAM). PEG-PAMAM with dendrimer generations of 5 (G5-PEG) or 7 (G7-PEG) were incorporated in PB-NLCs to form PB-CDDSs, PB-NLCs/G5-PEG and PB-NLCs/G7-PEG...

article

G5 PAMAM dendrimer versus liposome: A comparison study on the in vitro transepithelial transport and in vivo oral absorption of simvastatin

Rong Qi, Heran Zhang, Lu Xu, Wenwen Shen, more

Nanomedicine: Nanotechnology, Biology and Medicine > 2015 > 11 > 5 > 1141-1151

This study compared formulation effects of a dendrimer and a liposome preparation on the water solubility, transepithelial transport, and oral bioavailability of simvastatin (SMV). Amine-terminated G5 PAMAM dendrimer (G5-NH₂) was chosen to form SMV/G5-NH₂ molecular complexes, and SMV-liposomes were prepared by using a thin film dispersion method. The effects of these preparations on the transepithelial...

article

Folate binding protein—Outlook for drug delivery applications

Rachel L. Merzel, Jun-Jie Chen, E. Neil G. Marsh, Mark M. Banaszak Holl

Chinese Chemical Letters > 2015 > 26 > 4 > 426-430

Serum proteins represent an important class of drug and imaging agent delivery vectors. In this mini-review, key advantages of using serum proteins are discussed, followed by the particular advantages and challenges associated with employing soluble folate binding protein. In particular, approaches employing drugs that target folate metabolism are reviewed. Additionally, the slow-onset, tight-binding...

article

The role of caveolin-1 and syndecan-4 in the internalization of PEGylated PAMAM dendrimer polyplexes into myoblast and hepatic cells

Wenwen Shen, Mallory A. van Dongen, Yingchun Han, Maomao Yu, more

European Journal of Pharmaceutics and Biopharmaceutics > 2014 > 88 > 3 > 658-663

To improve gene delivery efficiency of PEGylated poly(amidoamine) dendrimers in livers and muscles, the roles of syndecan-4 receptor and caveolin-1 protein in the endocytosis of PEGylated generation 5 (G5-PEG) or 7 (G7-PEG) dendrimers and plasmid DNA polyplexes were explored in C2C12 and HepG2 cells. Expression levels of syndecan-4 for both cell lines were downregulated by transfection of the cells...

article

Quantification of cytosolic plasmid DNA degradation using high‐throughput sequencing: implications for gene delivery

Rahul Rattan, Anna U. Bielinska, Mark M. Banaszak Holl

The Journal of Gene Medicine > 16 > 3-4 > 75 - 83

BackgroundAlthough cytosolic DNA degradation plays an important role in decreasing transgene expression, the plasmid degradation pattern remains largely unexplored. MethodsIllumina dye sequencing was employed to provide degradation site information for S1 and cytosolic nucleases. S1 nuclease provided a positive control for a comparison between the agarose gel method and sequencing approaches. ResultsThe...

article

Isolation and Characterization of Precise Dye/Dendrimer Ratios

Casey A. Dougherty, Joseph C. Furgal, Mallory A. van Dongen, Theodore Goodson, more

Chemistry – A European Journal > 20 > 16 > 4638 - 4645

Fluorescent dyes are commonly conjugated to nanomaterials for imaging applications using stochastic synthesis conditions that result in a Poisson distribution of dye/particle ratios and therefore a broad range of photophysical and biodistribution properties. We report the isolation and characterization of generation 5 poly(amidoamine) (G5 PAMAM) dendrimer samples containing 1, 2, 3, and 4 fluorescein...

article

Aryl Halide Radical Clocks as Probes of Stannylene/Aryl Halide C–H Activation Rates

Ajdin Kavara, Michael M. Kheir, Jeff W. Kampf, Mark M. Banaszak Holl

Journal of Inorganic and Organometallic Polymers and Materials > 2014 > 24 > 1 > 250-257

Using the radical cyclization induced by the reaction of (1) with 1-(but-3-en-1-yloxy)-2-iodobenzene, we have determined the rate of allylic and propargylic C–H activation to be 1.1 ± 0.2 × 10⁸ M⁻¹ s⁻¹. The rate of oxidative addition of aryl halide with 1 was estimated to be 10⁷–10⁸ M⁻¹ s⁻¹. The radical cyclization involving 1 and 1-(allyloxy)-2-iodobenzene proceeds quantitatively, indicating that...

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INFONA - science communication portal

Search results for: Mark M. Banaszak Holl

A Homochiral Porous Organic Cage‐Polymer Membrane for Enantioselective Resolution

A Homochiral Poly(2‐oxazoline)‐based Membrane for Efficient Enantioselective Separation

A Homochiral Poly(2‐oxazoline)‐based Membrane for Efficient Enantioselective Separation

Frontispiz: Homochiral MOF–Polymer Mixed Matrix Membranes for Efficient Separation of Chiral Molecules

Homochiral MOF–Polymer Mixed Matrix Membranes for Efficient Separation of Chiral Molecules

Frontispiece: Homochiral MOF–Polymer Mixed Matrix Membranes for Efficient Separation of Chiral Molecules

Homochiral MOF–Polymer Mixed Matrix Membranes for Efficient Separation of Chiral Molecules

Tailoring dendrimer conjugates for biomedical applications: the impact of altering hydrophobicity

Microstructure dependent binding of pigment epithelium derived factor (PEDF) to type I collagen fibrils

Nanostructured materials for microwave receptors

Estrogen depletion and drug treatment alter the microstructure of type I collagen in bone

In vivo targeting of metastatic breast cancer via tumor vasculature-specific nano-graphene oxide

G5-PEG PAMAM dendrimer incorporating nanostructured lipid carriers enhance oral bioavailability and plasma lipid-lowering effect of probucol

G5-PEG PAMAM dendrimer incorporating nanostructured lipid carriers enhance oral bioavailability and plasma lipid-lowering effect of probucol

G5 PAMAM dendrimer versus liposome: A comparison study on the in vitro transepithelial transport and in vivo oral absorption of simvastatin

Folate binding protein—Outlook for drug delivery applications

The role of caveolin-1 and syndecan-4 in the internalization of PEGylated PAMAM dendrimer polyplexes into myoblast and hepatic cells

Quantification of cytosolic plasmid DNA degradation using high‐throughput sequencing: implications for gene delivery

Isolation and Characterization of Precise Dye/Dendrimer Ratios

Aryl Halide Radical Clocks as Probes of Stannylene/Aryl Halide C–H Activation Rates

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