Bacteria TRIZ Cases

Modified Corynebacterium glutamicum strains produce L-lysine by eliminating the WhiB4 regulatory gene.

A continuous directed evolution system transfers nucleic acids between host cells via phage infection to enable rapid protein diversification.

Bacterial artificial chromosome technology propagates a recombinant viral genome, eliminating live cell culture requirements and reducing storage complexity.

Engineered PPR nuclease hydrolyzes DNA at temperatures below 20°C while maintaining activity in high salt concentrations.

Adding aqueous solution to bacterial concentrates reduces water activity, enabling faster freeze-drying while preserving cell viability.

Engineered Endo-S mutants resolve core-fucosylated substrate limitations by enabling precise transglycosylation for homogeneous antibody glycoforms.

Targeted gene deletion in a mutant microorganism reduces 2,3-butanediol byproduct formation while maintaining high 1,3-propanediol production yields.

Optimized fermentation media and chaperones resolve rhGDF-5 aggregation issues while maintaining high cell density production scalability.

Endolysin-mediated autolysis releases plasmid DNA from E. coli cells, reducing nucleic acid impurities and toxic waste streams generated by alkaline lysis.

Engineered microbes synthesize lactose endogenously from glucose and galactose, eliminating thermal treatment steps that cause lactulose contamination.

Amide amino acids induce and stabilize enzymes, removing hazardous nitriles from waste detoxification.

Engineered Caldicellulosiruptor cells streamline lignocellulosic biomass conversion by merging hydrolysis and fermentation steps, reducing process complexity.

Polar exopolysaccharide preserves red blood cell integrity during freezing and thawing cycles.

Specific probiotic combinations enhance calcium uptake to prevent cortical bone loss and reduce inflammatory cytokines.

Engineered Zymomonas mobilis fixes atmospheric nitrogen using iron and molybdenum supplements, eliminating costly corn steep liquor in bio-ethanol production.

MP-RM-1 monoclonal antibody targets ErbB3 receptors to inhibit tumor growth while reducing toxicity from non-specific chemotherapeutic agents.

Reducing whey protein concentrate concentration during fermentation minimizes alpha-lactalbumin impurities while maintaining production yield.

Lactobacillus salivarius PS11610 restores urogenital microbiota balance through targeted probiotic colonization.

Site-directed mutations in the sigma factor polypeptide upregulate transcription, increasing L-lysine yield without inhibiting host cell growth.

Engineered organisms utilize ethanol to produce polyhydroxyalkanoates, reducing reliance on expensive sugar feedstocks.

Specific Lactobacillus strains metabolize organic acids to minimize carbon dioxide generation, preventing package expansion and preserving shelf-life stability.

Bifidobacterium lactis strain XLTG11 alleviates colitis by inhibiting the TLR4/MYD88/NF-κB signaling pathway, reducing pro-inflammatory cytokines.

Removable micro-pallets isolate adherent cells on a patterned plate, eliminating enzymatic damage during sorting.

Arthrobacter woluwensis HW-1 strain converts 2,5-dimethylpyrazine into 5-methylpyrazine-2-carboxylic acid via xylene monooxygenase catalysis.

Inactivating WhiB-family proteins in Corynebacterium reduces oxidative stress and improves GMP yield during fermentation.

EDTA chelation extracts outer membrane vesicles from Gram-negative bacteria at high pH.

Amino acid substitutions at positions 59, 88, and 94 in BMP2 variants block Noggin binding, maintaining bone formation activity despite local tissue inhibitors.

Modifying bacteria to attenuate phosphate transporter gene expression increases L-amino acid productivity.

Modified peptidoglycan incorporates bioorthogonal functional groups to enable specific chemical labeling of bacterial cell walls.

Lactobacillus plantarum CJLP475 and CJLP17 strains enhance immunity in piglets.

Selected probiotic strains induce interleukin-10 production, resolving the trade-off between anti-inflammatory activity and gastrointestinal survival.

Engineered microbial fermentation converts substrates into high-purity (R)-alpha-ionone, bypassing racemic chemical synthesis and laborious natural extraction.

Bacillus subtilis 6A-1 produces stable cellulases across pH 2 to 13, overcoming fungal spore sensitivity and narrow bacterial pH limits.

Sorbitol and corn gluten replace traditional nutrients to raise fidaxomicin yield above 500 mg/L, eliminating adsorbent resin use.

Strain HC4 isolates high cellulolytic activity to resolve bacterial instability, boosting energy production via short-chain fatty acids.

Targeted bacterial isolates restore microbiotic homeostasis, reducing reliance on complex antimicrobial treatments.

Engineered mutant reverse transcriptase maintains catalytic activity at elevated temperatures through targeted amino acid substitutions.

A trypsin-catalyzed semisynthesis process ligates amidated basic amino acids to peptides without protective groups.

Intravenous inactivated lactic acid bacteria enhance immune function while eliminating safety risks associated with live bacterial administration.

Blautia sp. B2132 strain restores microbial diversity and inhibits harmful bacteria to treat inflammatory bowel disease complications.

A culture medium uses bovine blood hydrolysate and yeast autolysate to support rapid Mycoplasma growth.

Two-phase fermentation with Lactobacillus strains yields 75 g/L lactic acid in 48 hours, avoiding antibiotic resistance.

A bio-silica chip uses a fusion protein to immobilize probe targets on a silica layer.

L. reuteri DAN080 supernatant increases lysozyme activity to treat gout and prevent infections.

Genome-modified bacteria resolve toxicity-activity trade-offs by selectively colonizing tumor microenvironments to stimulate adaptive immunity.

Probiotic compositions reduce pathogenic microorganism populations in the gut, increasing intestinal villi length and weight gain without antibiotic resistance.

Combined probiotic administration protects sperm from oxidative stress and inflammation, maintaining improved fertility for up to six weeks.