Abstract:
An atomic layer deposition method is disclosed for preparing polypeptides. The method comprises providing a solid-phase support comprising a reactive amine monolayer in an atomic layer deposition (ALD) chamber. The solid-phase support is contacted with a first protected amino acid substituted with a protecting group by atomic layer deposition, wherein the protecting group is bonded to a non-side chain amino group of the protected amino acid. A carboxylic acid group of the first protected amino acid is reacted with the reactive amine monolayer, thereby coupling the first protected amino acid to the solid- phase support to produce a coupled-product.
Abstract:
In one aspect, the invention provides novel monodisperse, colloidally-stable, torroidal mesoporous silica nanoparticles (TMSNPs) which are synthesized from ellipsoid-shaped mesoporous silica nanoparticles (MSNPs) which are prepared using an ammonia base- catalyzed method under a low surfactant conditions. Significantly, the TMSNPs can be loaded simultaneously with a small molecule active agent, a siRNA, a mRNA, a plasmid and other cargo and can be used in the diagnosis and/or treatment of a variety of disorders, including a cancer, a bacterial infection and/or a viral infection, among others. Related protocells, pharmaceutical compositions and therapeutic and diagnostic methods are also provided.
Abstract:
This disclosure describes compositions, vaccine, and methods that involve a biocomposite material Generally, the biocomposite material includes a cell and a lipid-silica matrix at least partially encapsulating the cell. In some cases, the cell can be viable but not culturable (VBNC). In some cases, the lipid-silica matrix includes a dried sol and/or possesses ordered nanostructure.