scispace - formally typeset
Search or ask a question

What chemical modifications in biomaterials can enhance sequestering proteins? 


Best insight from top research papers

Chemical modifications in biomaterials can enhance sequestering proteins by altering the surface properties to control protein adsorption. Proteins can be chemically modified to improve their loading in nanocarriers, enhancing protein retention and enzymatic activity. Surface-modified silica materials obtained via sol-gel routes can be used as solid supports for protein immobilization, ensuring the proteins retain their bioactivity. Additionally, surface modification of vascular grafts with specific peptides and genes can promote selective endothelial cell recruitment and functional endothelialization, improving the long-term patency of artificial vascular grafts. These chemical modifications offer a way to manipulate protein adsorption, enhance protein loading, and ultimately improve the performance and biocompatibility of biomaterials for various biomedical applications.

Answers from top 4 papers

More filters
Papers (4)Insight
Chemical modifications like amino, thiol, and hydroxyl groups on biomaterial surfaces enhance protein sequestering by regulating interactions through forces like Van der Waals, hydrophilic, and steric hindrance.
Amino acid conjugated self-assembled molecules (SAMs) on SiO2 surfaces can enhance protein sequestering by controlling protein adsorption selectivity, potentially improving biomaterial biocompatibility for various biomedical applications.
Chemical modification of protein surfaces with malonic acid moieties enhances protein loading in chitosan nanoparticles, improving sequestering capabilities for biotechnological and biomedical applications.
Open accessJournal ArticleDOI
Maria C. Gomes, João F. Mano 
01 Mar 2021
5 Citations
Chemical modifications like inserting motifs can enhance protein crosslinking and attachment of biochemical groups, improving sequestering properties in biomaterials, as discussed in the paper.

Related Questions

What is the role of lactylation in post-translational modification of proteins?5 answersLactylation, a post-translational modification, plays a crucial role in protein regulation. It involves the addition of lactate to histones and non-histone proteins, impacting gene transcription and protein function. Recent studies have highlighted the significance of lactylation in various biological processes, including cancer, inflammation, and cellular regeneration. The discovery of lactylation on histone lysine residues has expanded our understanding of gene expression regulation. Moreover, lactylation can modulate the activity of proteins like PARP1, showcasing its diverse functional implications. This novel modification not only influences cellular function but also bridges the gap between metabolic reprogramming and epigenetics, offering new insights into the intricate regulatory mechanisms within cells.
How do chemical modifications impact CRISPRi and CRISPRa?10 answersChemical modifications play a crucial role in enhancing the efficiency and specificity of CRISPR interference (CRISPRi) and CRISPR activation (CRISPRa) systems, which are pivotal for gene regulation applications. These modifications can significantly impact the stability, delivery, and off-target effects of CRISPR components, thereby improving their therapeutic potential and research utility. For CRISPRi and CRISPRa, the guide RNA (gRNA) is a key component whose chemical modification can directly influence the system's performance. Methylation of gRNA, such as m6A and m1A, has been shown to inhibit the DNA cleavage activities of CRISPR-Cas12a by destabilizing the gRNA structure, which prevents the assembly of the Cas12a-gRNA nuclease complex, thus affecting DNA targeting ability. This indicates that specific chemical modifications can be used to regulate the activity of CRISPR systems in a reversible manner, offering a tool for controllable gene editing. Moreover, the chemical synthesis of modified single-guide RNAs (sgRNAs) through bio-orthogonal chemistry has been developed to efficiently assemble functional sgRNAs containing nucleobase modifications, demonstrating the impact of these modifications on CRISPR activity. This approach highlights the importance of chemical modifications in overcoming the challenges of sgRNA synthesis and enhancing CRISPR system functionality. Chemical engineering further contributes to the advancement of CRISPR technologies by enabling conditional control of Cas9 activities, improving sgRNA stability and binding affinity, and facilitating nonviral delivery methods. These advancements underscore the significance of chemical modifications in optimizing CRISPR systems for gene therapy and transgenic research. Additionally, the introduction of protective groups on RNA and the use of amide linkages as nonionic backbone replacements have been explored to conditionally control CRISPR function and improve the stability and specificity of CRISPR-associated RNAs. These chemical strategies enrich the toolbox for CRISPRi and CRISPRa, offering new avenues for precise gene editing and regulation. In summary, chemical modifications are instrumental in enhancing the performance of CRISPRi and CRISPRa systems by improving gRNA stability, specificity, and delivery, while also providing mechanisms for conditional control and reversible activation of CRISPR functions.
Modification of glycans?5 answersModification of glycans involves altering the structure and properties of polysaccharides and oligosaccharides. Polysaccharides, which are natural macromolecular polymers found in various organisms, can be chemically modified to enhance their biological activities and biomedical applications. Similarly, oligosaccharides, which play important roles in cells and have potential applications in medicine and materials, can be modified to optimize their function and efficacy. Chemoenzymatic approaches have been developed to modify glycan structures on cell surfaces, allowing for the study of glycan-mediated virus infections. In addition, the introduction of selective inhibitors, such as kifunensine, can shift the glycosylation pattern of recombinant proteins from complex-type to oligomannose-type glycans, which can be further modified to produce human-like N-glycan structures. Metabolic engineering and biosynthetic incorporation techniques enable the introduction of reactive functional groups into glycans, providing a means for site-selective modification.
What recent modification food protein?5 answersRecent modifications in food proteins include the use of enzymatically hydrolyzed proteins to impart functional and structural changes in food products. Thermal and non-thermal technologies, such as high-voltage cold plasma, ultrasound, and high-pressure protein, have been explored for protein modification to improve techno-functional properties, digestibility, and allergenicity. Non-thermal processes, including structural transformation and modulation of functional properties, have been found to enhance the digestibility and bioavailability of plant-based proteins. Novel physical processing technologies (NPPT) are being developed to alter protein functionality, reduce anti-nutritional compounds, and prevent damage to heat-labile proteins. Cold plasma treatment has shown promise in improving the solubility, emulsifying, and foaming properties of plant proteins, as well as inactivating antinutritional factors and allergens. These modifications aim to overcome the limitations of plant proteins, such as low solubility and inferior functional properties, to meet the increasing demand for sustainable and healthy plant-based food products.
What is the need of surface modification or coating for protein adsorption?5 answersSurface modification or coating is necessary for protein adsorption because it allows for the control and manipulation of the interaction between biomaterial surfaces and proteins. By modifying the surface properties of biomaterials, such as bioactive glasses (BGs) or silicon dioxide (SiO2), the adsorption of proteins can be enhanced or inhibited, depending on the desired outcome. This is important for various biomedical applications, as protein adsorption plays a crucial role in determining the biocompatibility of biomaterials. Surface engineering techniques, such as treating BGs with different solutions or grafting amino acids onto SiO2 surfaces, can alter the physico-chemical properties of the surfaces, affecting protein adsorption behavior. Understanding and controlling the surface chemistry of materials enables selective improvement of protein adsorption, which is critical for promoting cell attachment and enhancing the biocompatibility of biomaterials.
Amidation enhanced interaction between the modified pectin and the drug, allowing for more efficient drug loading3 answersAmidation of pectin enhanced the interaction between the modified pectin and the drug, resulting in more efficient drug loading. The modified pectin, such as diethonolamine-modified high-methoxyl pectin (DMP) and C12-alkylated pectin (PC12), showed improved drug encapsulation efficiency and sustained drug release behavior. The modified pectin hydrogels exhibited strong interactions with the drug, as indicated by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) studies. These interactions led to increased crystallinity in the hydrogels and improved drug delivery efficiency. The modified pectin hydrogels also demonstrated good water holding properties and compatibility with cells and blood. Overall, amidation of pectin enhanced the interaction between the modified pectin and the drug, allowing for more efficient drug loading and controlled drug release.

See what other people are reading

Why polyHIPEs are functionalized with biomolecules?
5 answers
PolyHIPEs are functionalized with biomolecules to enhance their properties for specific applications. Functionalization allows for tailored modifications, such as incorporating enzymes like Candida Antarctica Lipase B for biocatalytic purposes. Additionally, the introduction of specific functional groups through functionalization can improve the hydrophilicity of PolyHIPEs, making them suitable for ion exchange applications. Furthermore, the direct polypeptide surface grafting on PolyHIPEs enables the development of macroporous monoliths with tunable surface functional groups, expanding their potential applications in various fields. Overall, functionalizing PolyHIPEs with biomolecules enhances their versatility and performance for targeted uses in biocatalysis, ion exchange, and other specialized applications.
What evidence supports that deionised water contains only hydrogen and hydroxide ions?
5 answers
Evidence supporting that deionized water contains only hydrogen and hydroxide ions comes from various studies. X-ray Raman spectroscopy (XRS) and small-angle x-ray scattering (SAXS) analyses of HCl and NaOH solutions reveal that H+ and OH− ions have distinct effects on water structure, with H+ enhancing local hydrogen bonds and OH− inducing tetrahedrality in the overall hydrogen bond network. Additionally, a deionized pure water treatment device utilizes an electrostatic field to force ions to migrate towards oppositely charged electrodes, effectively removing them from the solution, resulting in high deionization efficiency. Furthermore, a deionization filter device adjusts the voltage applied to electrodes based on the pH of the solution, ensuring that only hydrogen and hydroxide ions are present in the purified water.
How does ampicillin sensitive to gastric acid ?
5 answers
Ampicillin's sensitivity to gastric acid is influenced by various factors. Ampicillin's effectiveness against Helicobacter pylori, a bacterium causing peptic ulcers, is affected by gastric pH. The adsorption of ampicillin by antacids like bismuth carbonate, magnesium trisilicate, and aluminum hydroxide varies, with bismuth carbonate showing the highest adsorption capacity. However, short-term treatment with omeprazole, a proton pump inhibitor affecting gastric pH, does not interfere with ampicillin's pharmacokinetics. In strong acidic solutions, ampicillin forms inclusion complexes with 2-hydroxypropyl-β-cyclodextrin, increasing its stability and potentially aiding in eradicating H. pylori infections. Therefore, ampicillin's sensitivity to gastric acid is multifaceted, involving interactions with antacids, proton pump inhibitors, and inclusion complexes.
How does ampicillin sensitive to gastric acid and need to take with meal ?
5 answers
Ampicillin's sensitivity to gastric acid and the necessity to take it with a meal are influenced by various factors. The bioavailability of ampicillin can be affected by gastric pH, as acidic conditions can impact its effectiveness. Additionally, the presence of food can influence the absorption of prodrug beta-lactam antibiotics, such as bacampicillin, with food and raised intragastric pH potentially decreasing bioavailability. Moreover, the co-administration of ampicillin with certain antacids like bismuth carbonate can lead to adsorption of ampicillin, affecting its efficacy in treating peptic ulcers. These findings highlight the importance of considering gastric conditions and meal timing when administering ampicillin to ensure optimal therapeutic outcomes.
Why are synthetic shampoos harmful?
5 answers
Synthetic shampoos are considered harmful due to their potential adverse effects on hair and scalp health. Research highlights that synthetic shampoos can lead to issues like dryness of hair, keratin loss, and scalp damage. Unlike natural or herbal shampoos, synthetic variants often contain excessive detergents that strip the hair and scalp of essential oils, leading to dryness and potential damage. Moreover, the ingredients in synthetic shampoos can have negative impacts when absorbed through the scalp, affecting overall health. This emphasizes the importance of understanding the ingredients in shampoos and opting for natural formulations to avoid the harmful effects associated with synthetic shampoos.
What are the key motivations for torrefaction of agricultural residues (or agricultural biomass)?
6 answers
The key motivations for torrefaction of agricultural residues stem from the need to address environmental concerns, enhance biomass fuel properties, and improve the efficiency of biomass utilization for energy production. Firstly, the process of torrefaction significantly improves the thermal properties of biomass, such as empty fruit bunch biochar, by removing moisture and volatile matter, thereby enhancing its calorific value and making it a more efficient and renewable energy material for future applications. This is further supported by studies showing that torrefaction increases the carbon content and calorific value of agricultural residues like maize and wheat waste, fundamentally improving their fuel properties. Moreover, the utilization of agricultural residues for torrefaction aligns with the principles of a circular economy, reducing dependence on fossil fuels and mitigating environmental pollution. This is particularly relevant given the large amounts of agro-industrial waste generated, which, if not disposed of properly, can lead to environmental contamination. Torrefaction offers a pathway to reuse these residues as biomass for energy production or as adsorbents for environmental decontamination. The process also addresses the inherent challenges of using biomass as fuel, such as its low energy density, high moisture content, and hydrophilicity, by transforming it into a more energy-dense, hydrophobic material with improved grindability, thereby reducing storage and transportation costs. This transformation is crucial for making biomass a viable alternative to conventional fuels in domestic power plants and other industrial applications. Furthermore, oxidative torrefaction, a variation of the process, has been identified as an economical and sustainable option for thermochemical biorefinery applications, offering a way to achieve a circular economy by using waste biomass and flue gas. The process also results in biomass with greater heating values, energy density, and improved physical properties, which significantly reduces transport and storage costs. Research into the chemical modification of agricultural wastes for water decontamination highlights the potential of torrefied biomass as an efficient, cheaper, and renewable adsorbent, further emphasizing the environmental benefits of torrefaction. Studies on the densification of agricultural waste biomasses through torrefaction have demonstrated its effectiveness in converting these residues into valuable, solid biofuels, optimizing conditions for better energy recovery schemes. Lastly, the impact of moisture in the torrefaction atmosphere on biomass thermochemical transformation suggests that the process's efficiency can vary with biomass type and composition, indicating the need for tailored torrefaction approaches to maximize benefits. In summary, the motivations for torrefying agricultural residues include enhancing biomass fuel properties, contributing to environmental sustainability, improving biomass handling and transportation efficiency, and expanding the applications of biomass for energy production and environmental remediation.
Nanobiocomposites hydrogel-based ?
5 answers
Nanobiocomposites based on hydrogels are emerging as promising materials for various biomedical applications. These nanocomposites combine biopolymeric matrices with nanoscale fillers, enhancing properties like mechanical strength and thermal stability. The incorporation of bioactive ingredients into crosslinked polysaccharide hydrogels has shown potential for wound healing applications, displaying antimicrobial properties against common bacterial strains. Furthermore, the use of nanogels or nanohydrogels in bone tissue engineering and regeneration has been highlighted, emphasizing their biocompatibility and drug delivery capabilities. Proteins like collagen and gelatin are being explored for the preparation of protein-based hydrogel nanocomposites, showcasing bioactivity, biocompatibility, and biodegradability for medical applications. Overall, nanobiocomposite hydrogels hold great promise in the field of regenerative medicine and tissue engineering.
How can ai and machine learning help in the process development of chromatography for aav?
5 answers
AI and machine learning play a crucial role in advancing chromatography process development for AAV production. These technologies leverage historical data to predict chromatographic characteristics accurately and efficiently, aiding in method development for liquid chromatography. Specifically, the integration of artificial neural networks (ANNs) with chromatography models enhances accuracy and speed in parameter estimation, such as for Steric Mass Action (SMA)-based mixed-mode chromatography models. Moreover, machine learning frameworks like PANACHE can simulate chromatographic column dynamics without relying on adsorption isotherms, successfully predicting binary solute mixtures' behavior even in the absence of isotherm data. By combining AI and machine learning with chromatography techniques, researchers can achieve more precise and efficient process development for AAV production.
What is a primer in etch and rinse adhesives?
5 answers
A primer in etch-and-rinse adhesives is a crucial component that plays a significant role in improving bonding performance. In adhesive dentistry, primers are used to prepare the tooth surface for optimal adhesion of the adhesive resin. They can contain various functional components that interact with the tooth structure to enhance bonding strength. For example, primers can be designed to form covalent bonds with dentin collagen, improving stability against enzymatic degradation and modifying the adhesive interface. Additionally, the use of primers like 10-methacryloyloxydecyl dihydrogen phosphate (MDP) has been shown to significantly increase short- and long-term microtensile bond strengths of dentin when combined with mild self-etch adhesives. Overall, primers are essential in etch-and-rinse adhesives to ensure durable and reliable bonding to tooth structures.
What is silica?
4 answers
Silica, scientifically known as silicon dioxide (SiO2), is a mineral found in various forms such as crystalline and non-crystalline. It is a crucial element utilized by all living organisms, playing roles in molecular processes and mineral formation. Silica has diverse industrial applications and can be extracted from natural materials like Napa Soil through specific methods, resulting in high purity levels. In agriculture, silicates in soil amendments help correct imbalances, enhance soil fertility, and protect plants from pests and pathogens. Silica's molecular structure consists of tetrahedral SiO4 units forming a polyhedral network with open pores, allowing for adsorption of other molecules. Additionally, waste materials like almond shells can be processed to produce silica, demonstrating its versatility and potential environmental benefits.
What type application are found size of the carbon quantum dotsn?
5 answers
Carbon quantum dots (CQDs) have diverse applications due to their small size, typically below 10 nm. These nanostructures exhibit fluorescence properties, making them suitable for bioimaging, drug delivery, gene delivery, and cancer therapy. Additionally, CQDs are utilized in sensing metal ions, organic compounds, and pollutants, showcasing their potential as nanoprobe sensors. Their high water solubility, low toxicity, and excellent photoluminescence make them valuable in various fields like biomedicine, photocatalysis, solar energy conversion, and light-emitting diodes. Furthermore, CQDs are being explored for pharmaceutical applications, including sustained and targeted drug delivery systems and theranostic studies, due to their biocompatibility and biodegradable nature. Overall, the small size of CQDs enables their versatile use in a wide range of applications, from healthcare to environmental and pharmaceutical sectors.