The uniqueness of the Spodoptera frugiperda engineering lies in the insect cell line's ability to correctly fold complex eukaryotic proteins and add glycan modifications. This characteristic, coupled with their rapid growth and ease of genetic manipulation, makes these cell lines highly adaptable platforms for protein production and glycobiology research. In particular, the use of these cell lines for chemoenzymatic glycoengineering provides a unique tool for producing customized glycoproteins with precise and predictable glycan structures that are unachievable with other systems.
CD BioGlyco has developed the cutting-edge GlycoChas™ Cells platform, which features a wide range of chassis species, including multiple Insect Chassis. These chassis are carefully designed and optimized to support a variety of complex biological experiments and engineering applications. It is particularly worth mentioning that S. frugiperda engineering service we provide, based on our GlycoChas™ provides clients with efficient and accurate S. frugiperda metabolic engineering, cell engineering, glycosyltransferase engineering, synthetic O-glycan engineering, and protein engineering services.
Metabolic pathway reconstruction: Through metabolic pathway engineering, we optimize the glycan metabolism pathway of S. frugiperda and improve the synthesis efficiency of specific glycan substances. For example, the ability of S. frugiperda to synthesize certain rare glycans can be enhanced by introducing exogenous genes or modifying endogenous genes.
Metabolic flow analysis and optimization: We real-time monitor metabolic flow changes of S. frugiperda under different physiological states using isotope labeling and mass spectrometry analysis. We analyze this data to optimize metabolic flow and improve the production and quality of carbohydrates.
The importance of S. frugiperda in synthetic glycobiology depends on its engineered cell lines, particularly the Sf9 and Sf21 cell lines. These cell lines are widely used in bioengineering to produce recombinant proteins using baculovirus expression vector systems. This technology utilizes insect cells to produce eukaryotic proteins with post-translational modifications such as glycosylation, which is difficult to achieve in bacterial or yeast systems. This makes the Sf9/Sf21 cell line invaluable for the production of complex proteins for structural and functional studies, vaccine production, and therapeutics.
Cell line establishment and optimization: We establish a stable S. frugiperda cell line to study its glycan metabolism characteristics and regulatory mechanism in vitro. These cell lines serve as bioreactors for the production of specific glycans. Improve the yield and purity of carbohydrates by optimizing cell culture conditions and metabolic pathways.
Large-scale culture and fermentation: S. frugiperda has a rapid growth rate and strong metabolic capacity, making it suitable for large-scale culture and fermentation. Efficient production and cost control of glycans are achieved by optimizing the fermentation process and reactor design.
S. frugiperda glycosyltransferase engineering techniques include expressing mammalian glycosyltransferases or creating S. frugiperda strains with enhanced glycosyltransferase activity to synthesize target glycan structures.
Identification and cloning of glycosyltransferase: First, it is necessary to identify and clone the enzyme gene with specific glycosyl transfer activity. These genes come from S. frugiperda or from other species.
Gene expression and regulation: We express the cloned glycosyltransferase gene in S. frugiperda, and control its expression level through gene editing technology. This can alter the extent and type of glycosylation modifications in insects.
Analysis of glycosylation products: We analyze the glycosylation products in insects after engineering glycosyltransferases, and evaluate their impact on the synthesis and properties of carbohydrates.
This technology aims to transform S. frugiperda cells and perform human-like O-glycosylation on recombinant proteins. While insects naturally only carry out simple forms of O-glycosylation, through genetic engineering, the more complex form (mucin-type O-glycosylation) commonly seen in humans can be recreated, resulting in a more realistically human appearance in these insects glycoprotein cells.
Glycoprotein engineering aims to optimize the structure and function of glycoproteins in S. frugiperda by regulating their synthesis and modification.
Glycoprotein structure and function analysis: By understanding the structure and functional characteristics of the target glycoprotein, we determine the key factors affecting its stability and activity.
Gene editing and regulation: Gene editing technology is used to knock out or down-regulate genes related to glycoprotein synthesis and modification to reduce non-specific glycosylation or increase the proportion of specific glycosylation. At the same time, the synthesis efficiency of glycoprotein is improved by up-regulating key enzyme genes.
Purification and identification of glycoproteins: After glycoprotein engineering, the glycoproteins synthesized in insects are purified and identified through chromatographic separation, mass spectrometry analysis and other methods.
Technology: Purification of a β-N-acetylhexosaminidase
Journal: Journal of Biological Chemistry
IF: 5.486
Published: 2006
Results: The authors reported the successful purification of a β-N-acetylhexosaminidase from the cultured medium of S. frugiperda Sf9 cells (Sfhex). Remarkably, the purified Sfhex protein exhibited activity levels ten times greater when acting on a terminal N-acetylglucosamine on the N-glycan core compared to tri-N-acetylchitotriose. When presented with a biantennary N-glycan substrate, Sfhex showed a 5-fold preference for removing the β(1,2)-linked N-acetylglucosamine from the Manα(1,3) branch over the Manα(1,6) branch. A completed phylogenetic analysis proposed that Sfhex is an ortholog of the mammalian lysosomal β-N-acetylhexosaminidases. When expressed in Sf9 cells, the recombinant Sfhex maintained the same substrate specificity and pH optimum as the purified enzyme.
Here are some of the results shown in this article:
Fig.1 Hydrolysis of GnGn-PA and (GlcNAc)3-PA by a hexosaminidase. (Tomiya, et al., 2006)
CD BioGlyco provides efficient S. frugiperda engineering services. We specialize in providing S. frugiperda chassis and its high-quality glycan/glycoprotein products. Our services cover the entire process from basic research to product development. Clients are welcome to
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