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Leptospira is an important infectious Gram-negative bacterium causing Leptospirosis in mammals. Outer membrane proteins (OMPs) are key molecules in the interface between the cell and its environment. A group of putative leptospiral outer membrane proteins with an OmpA-like domain, comprising Lp0056, Lp0222, Lp3615, Lp3685, Lp4337 and Lbp328, were identified by bioinformatic methods and expressed as...
Leptospiral immunoglobulin-like protein (LigB) was truncated into conserved (LigBcon) and variable (varB1, varB2) fragments and expressed as GST/His-tag fusion proteins. Four-week-old hamsters were immunized with equal amounts of each fragment individually or combined in alum adjuvant at days 0 and 21 and subsequently challenged three weeks after the booster with 2.5 LD 50 live virulent Leptospira...
Subunit vaccines are attractive as an intervention strategy against leptospirosis, an important zoonotic disease afflicting both humans and livestock. However, the success of subunit vaccines has been hampered by weak or short-term immunity and unavailability of nontoxic, potent adjuvants. In the present study, the variable region of recombinant Leptospira immunoglobulin like protein A (LigAvar) incorporated...
Leptospiral putative outer membrane proteins (OMPs) are likely to be essential components of more effective vaccines. Recently completed genomic sequences of Leptospira allowed us to target putative OMPs for the development of recombinant vaccines. We focused on 12 putative OMPs that had no homology with other organisms listed in the NCBI database except MceI and MceII of Leptospira, which are ∼25%...
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