Molecular Mimicry Inference, Therapeutic Target Identification, and Natural Product Inhibition Study in...

Area of Science:

• Infectious Diseases
• Immunology
• Computational Biology

Background:

• Cardiobacterium valvarum is a cause of infective endocarditis (IE).
• Autoimmune responses and molecular mimicry contribute to IE pathogenesis.
• Identifying pathogen-host immune interactions is crucial for understanding IE.

Purpose of the Study:

• To identify candidate proteins in C. valvarum that may trigger autoimmune responses via molecular mimicry.
• To discover potential drug targets within C. valvarum.
• To evaluate natural compounds for their potential to inhibit identified drug targets and treat IE.

Main Methods:

• Bioinformatics analysis to identify proteins with molecular mimicry potential.
• Subtractive proteomics to pinpoint drug targets.
• Molecular docking and molecular dynamics simulations to assess natural product efficacy.
• Analysis of compounds from Ocimum tenuiflorum, Leonurus cardiaca, and Panax ginseng.

Main Results:

• 18 C. valvarum proteins showed potential for autoimmunity.
• The purK gene product (5-(carboxyamino)-imidazole ribonucleotide synthase) was identified as a potential drug target.
• Five natural compounds exhibited strong binding affinity to the purK target.
• LTS0201798 and LTS0158828 showed good binding and stability, with potential for oral administration.

Conclusions:

• Bioinformatics and molecular docking identified potential autoimmune targets and natural product inhibitors for C. valvarum.
• Specific compounds like LTS0201798 and LTS0158828 show promise for infective endocarditis treatment.
• Further experimental validation is recommended to confirm clinical efficacy.