CD Formulation leverages advanced technologies to reveal the complex structures of nucleic acid drugs, aiding the innovation and development of new therapies. Our services provide detailed molecular analyses to ensure each drug performs its intended functions and meets strict research standards.
The complex three-dimensional structures of nucleic acid drugs, known as their higher order structures (HOS), are crucial for their biological functionality. These structures extend beyond mere sequences, encompassing intricate tertiary and quaternary formations. Tertiary structures, such as stem-loops, pseudoknots, and G-quadruplexes, result from further spatial folding of nucleic acid chains and are stabilized by various molecular interactions. These configurations guide precise recognition and target binding. Quaternary structures comprise interactions between multiple nucleic acid strands or nucleic acids with proteins, impacting the drug's stability, solubility, and function. Such structures are essential for processes like ribozyme catalysis and the enhanced specificity found in antibody-DNA complexes.
Our services specialize in examining the 3D shapes of nucleic acids in drug applications. We analyze sequences, secondary structures, and how these nucleic acids interact with proteins or small molecules. Utilizing X-ray crystallography, NMR, and Cryo-EM, we gather detailed structural data. This information aids in understanding how nucleic acids bind specifically to proteins and adapt to environmental changes.
Quaternary structure analysis extends beyond tertiary structure by focusing on dynamic changes and temporal evolution. Molecular dynamics simulations are the core method for studying four-dimensional structures, allowing scientists to observe the movement and changes of nucleic acid molecules at an atomic level. This approach can simulate the true behavior of nucleic acids within a cellular environment and reveal dynamic characteristics difficult to observe directly through experiments.
Structure prediction and modeling employ computer-assisted methods combined with existing experimental structural data to predict unknown three- and four-dimensional structures of nucleic acids. Utilizing machine learning, pattern recognition, and artificial intelligence algorithms, structure prediction tools simulate how nucleic acid sequences fold into their functional structures. This field's advancements facilitate the acquisition of structural information conveniently when experimental methods are limited or resources are scarce, guiding subsequent research.
Fig.1 Flow chart of nucleic acid purity HOS structure analysis. (CD Formulation)
Extract and purify target nucleic acid fragments to ensure sample integrity and stability, avoiding contamination from external substances.
Select appropriate analytical techniques such as NMR spectroscopy or Cryo-EM based on the characteristics of the nucleic acid and research needs.
Obtain original data from the sample using the selected structural analysis methods, potentially involving complex instrumentation operations and condition optimization.
Process collected data with software tools to perform preliminary structural calculations and analysis, resulting in a three-dimensional structural model of the nucleic acid.
Platforms | Descriptions |
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NMR Platform | NMR is an effective tool for analyzing nucleic acid molecular structures, providing atomic-level resolution information to determine three-dimensional structures, dynamic properties, and interactions. |
CD Platform | CD is mainly used to study the secondary structure of nucleic acid drugs. By measuring differences in light absorption in the ultraviolet region, information on conformational changes and stability is obtained. |
MS Platform | MS is used in nucleic acid analysis to determine molecular weight and structure. Particularly when coupled with LC-MS, MS provides insights into drug purity, modifications, and degradation products. |
SEM Platform | SEM is employed to observe the surface morphology and nanostructure of nucleic acid drugs. High-resolution imaging reveals physical characteristics and micro-morphologies. |
IR Platform | IR is used to analyze chemical bonds and molecular vibrations in nucleic acids. By measuring infrared spectral absorption, information on chemical structure and molecular environments is acquired. |
Technology: Analysis of high-order nucleic acid structures utilizing a TEM platform
Journal: Materials Chemistry Frontiers
IF: 7.0
Published: 2020
Results:
Over the last four decades, DNA and RNA nanotechnology have leveraged the unique properties of nucleic acids, isolating them from biological contexts to create precise and functional supramolecular structures. By capitalizing on their biocompatibility and customizable attributes, higher-order nucleic acid structures have emerged as potent biomedical tools. This overview outlines significant progress in crafting synthetic nucleic acid frameworks, emphasizing their applications in biosensing and targeted drug delivery.
Fig.2 High-order nucleic acid structures for biosensing and drug delivery. (Hill A C, et al., 2020)
To learn more about our higher order structure analysis services for nucleic acid drugs, or for specific technical discussions, please contact our professional team. We're ready to provide customized service solutions to meet your specific needs.
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