Video Experimental Relacionado

Updated: Apr 16, 2026

Facile Protocol for the Synthesis of Self-assembling Polyamine-based Peptide Amphiphiles PPAs and Related Biomaterials

Facile Protocol for the Synthesis of Self-assembling Polyamine-based Peptide Amphiphiles PPAs and Related Biomaterials

Published on: June 25, 2018

Síntesis controlada de los derivados de la fosforilcolina de las poli (serina) y poli (homoserina)

Ilya Yakovlev¹, Timothy J Deming¹

¹†Department of Chemistry and Biochemistry and ‡Department of Bioengineering, University of California, Los Angeles, California 90095, United States.

Journal of the American Chemical Society

|March 20, 2015

Resumen

Los investigadores sintetizaron polipéptidos con grupos de fosforilcolina (PC, por sus siglas en inglés). Desarrollaron un método novedoso que combina la polimerización de NCA y la modificación de la pospolimerización para crear poli (L-fosforilcolina homoserina) estable y soluble en agua.

Área de la Ciencia:

Química de Polímeros La Química de Polímeros es la química de los polímeros.
Ciencia de los Biomateriales Ciencia de los Biomateriales.
Síntesis orgánica La síntesis orgánica.

Sus antecedentes:

Los grupos de fosforilcolina (PC) imparten propiedades biomateriales deseables.
La incorporación directa de grupos de PC en los monómeros de N-carboxyanhidruro (NCA) es un reto sintético.
Los métodos existentes para los polipéptidos funcionalizados con PC son limitados.

Objetivo del estudio:

Desarrollar una ruta sintética robusta para polipéptidos totalmente funcionalizados con grupos de PC.
Para superar los desafíos asociados con la incorporación directa de grupos de PC en los monómeros NCA.
Para sintetizar y caracterizar nuevos polipéptidos funcionalizados con PC.

Principales métodos:

Desarrolló una estrategia que combina la polimerización funcional de NCA con la modificación de la pospolimerización.
Investigó la síntesis de poli (L-fosforilcolina serina) y poli (L-fosforilcolina homoserina).
Longitudes controladas de la cadena polipeptídica y evaluación de la solubilidad en agua y la conformación de la cadena.

Principales resultados:

Poly ((L-fosforilcolina serina) resultó inestable durante la síntesis.
Se sintetizó con éxito poli (L-fosforilcolina homoserina) con pesos moleculares controlados.
La poli (L-fosforilcolina homoserina) resultante exhibió solubilidad en agua y conformaciones de cadena desordenadas.

Conclusiones:

El enfoque combinado de modificación por polimerización y pospolimerización de NCA es efectivo para sintetizar polipéptidos funcionalizados con PC.
La poli (L-fosforilcolina homoserina) es un candidato de biomaterial estable y soluble en agua.
Este método ofrece una vía viable para crear polímeros avanzados funcionalizados con PC para aplicaciones biomédicas.

Más Videos Relacionados

Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides CHIPS

Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides CHIPS

Published on: June 20, 2014

Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures

Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures

Published on: April 11, 2017

Videos de Conceptos Relacionados

Synthesis of Phosphatidylcholine in the ER Membrane

Synthesis of Phosphatidylcholine in the ER Membrane

The ER synthesizes lipids for building cell membranes and performing cellular functions such as energy storage and signaling. The lipid synthesis machinery embedded in the ER membrane primarily collects all reactants from the cytosol. Following synthesis, the secretory pathway and the ER contact sites distribute these lipids to other cellular organelles. Additionally, the energy-rich triacylglycerides are transported from the ER via lipid droplets.
The major components of all eukaryotic cell...

Direct-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship

Direct-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship

Cholinergic agonists or cholinomimetics mimic the action of acetylcholine to stimulate the parasympathetic nervous system. They are categorized into direct-acting and indirect-acting agents. The direct-acting cholinergic drugs induce the parasympathetic response by directly binding to the muscarinic or nicotine receptors. In comparison, the indirect-acting cholinergic drugs prevent acetylcholine hydrolysis, indirectly contributing to the extended parasympathetic response.
The direct-acting...

Cholinesterases: Distribution and Function

Cholinesterases: Distribution and Function

Cholinesterases are a group of serine hydrolase enzymes that play a crucial role in the breakdown of choline esters. The two primary types of cholinesterases are acetylcholinesterases (AChEs) and butyrylcholinesterase (BuChEs), which differ in their distribution, function, and substrate specificity. AChEs, also known as true cholinesterases, specifically hydrolyze acetylcholine, while BuChEs, often referred to as pseudocholinesterases, can hydrolyze various choline esters, including...

Indirect-Acting Cholinergic Agonists: Mechanism of Action

Indirect-Acting Cholinergic Agonists: Mechanism of Action

Indirect-acting cholinergic agonists work by interacting with an enzyme called acetylcholinesterase (AChE) in the synaptic cleft. They can be reversible or irreversible inhibitors and have different effects on the enzyme.
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex,...

Cholinergic Neurons: Neurotransmission

Cholinergic Neurons: Neurotransmission

Cholinergic neurotransmission involves the synthesis and the release of acetylcholine (ACh) in order to transmit nerve impulses across the synapse. The process begins with the synthesis of acetyl CoA, a precursor for ACh, from ATP, acetate, and coenzyme A in the mitochondria. Choline, another vital precursor, is transported inside the neuron through choline transporters, including high-affinity choline transporter CHT1, low-affinity choline transporter CTL1, and lower-affinity choline...

Prochirality

Prochirality

The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...