PMID- 23478318 OWN - NLM STAT- MEDLINE DCOM- 20130617 LR - 20211021 IS - 1098-5522 (Electronic) IS - 0019-9567 (Print) IS - 0019-9567 (Linking) VI - 81 IP - 5 DP - 2013 May TI - Vaccination with the recombinant major outer membrane protein elicits antibodies to the constant domains and induces cross-serovar protection against intranasal challenge with Chlamydia trachomatis. PG - 1741-50 LID - 10.1128/IAI.00734-12 [doi] AB - To determine the ability of the major outer membrane protein (MOMP) to elicit cross-serovar protection, groups of mice were immunized by the intramuscular (i.m.) and subcutaneous (s.c.) routes with recombinant MOMP (rMOMP) from Chlamydia trachomatis serovars D (UW-3/Cx), E (Bour), or F (IC-Cal-3) or Chlamydia muridarum strain Nigg II using CpG-1826 and Montanide ISA 720 VG as adjuvants. Negative-control groups were immunized i.m. and s.c. with Neisseria gonorrhoeae recombinant porin B (Ng-rPorB) or i.n. with Eagle's minimal essential medium (MEM-0). Following vaccination, the mice developed antibodies not only against the homologous serovar but also against heterologous serovars. The rMOMP-vaccinated animals also mounted cell-mediated immune responses as assessed by a lymphoproliferative assay. Four weeks after the last immunization, mice were challenged i.n. with 10(4) inclusion-forming units (IFU) of C. muridarum. The mice were weighed for 10 days and euthanized, and the number of IFU in their lungs was determined. At 10 days postinfection (p.i.), mice immunized with the rMOMP of C. muridarum or C. trachomatis D, E, or F had lost 4%, 6%, 8%, and 8% of their initial body weight, respectively, significantly different from the negative-control groups (Ng-rPorB, 13%; MEM-0, 19%; P < 0.05). The median number of IFU recovered from the lungs of mice immunized with C. muridarum rMOMP was 0.13 x 10(6). The median number of IFU recovered from mice immunized with rMOMP from serovars D, E, and F were 0.38 x 10(6), 7.56 x 10(6), and 11.94 x 10(6) IFU, respectively. All the rMOMP-immunized animals had significantly less IFU than the Ng-rPorB (40 x 10(6))- or MEM-0 (70 x 10(6))-immunized mice (P < 0.05). In conclusion, vaccination with rMOMP can elicit protection against homologous and heterologous Chlamydia serovars. FAU - Tifrea, Delia F AU - Tifrea DF AD - Department of Pathology and Laboratory Medicine, Medical Sciences I, University of California, Irvine, Irvine, California, USA. FAU - Ralli-Jain, Pooja AU - Ralli-Jain P FAU - Pal, Sukumar AU - Pal S FAU - de la Maza, Luis M AU - de la Maza LM LA - eng GR - R01 AI067888/AI/NIAID NIH HHS/United States GR - R01 AI092129/AI/NIAID NIH HHS/United States GR - AI-67888/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20130311 PL - United States TA - Infect Immun JT - Infection and immunity JID - 0246127 RN - 0 (Adjuvants, Immunologic) RN - 0 (Antibodies, Bacterial) RN - 0 (Bacterial Outer Membrane Proteins) RN - 0 (Bacterial Vaccines) RN - 0 (Recombinant Proteins) SB - IM MH - Adjuvants, Immunologic/administration & dosage/pharmacology MH - Administration, Intranasal MH - Animals MH - Antibodies, Bacterial/blood MH - Bacterial Outer Membrane Proteins/administration & dosage/*immunology MH - Bacterial Vaccines/administration & dosage/*immunology MH - Body Weight/immunology MH - Chlamydia Infections/immunology/*prevention & control MH - Chlamydia muridarum/isolation & purification MH - Chlamydia trachomatis/*immunology MH - Colony Count, Microbial MH - Female MH - Immunity, Humoral/physiology MH - Lung/microbiology MH - Mice MH - Mice, Inbred BALB C MH - Recombinant Proteins/immunology MH - T-Lymphocytes/immunology MH - Vaccination/methods PMC - PMC3648024 EDAT- 2013/03/13 06:00 MHDA- 2013/06/19 06:00 PMCR- 2013/11/01 CRDT- 2013/03/13 06:00 PHST- 2013/03/13 06:00 [entrez] PHST- 2013/03/13 06:00 [pubmed] PHST- 2013/06/19 06:00 [medline] PHST- 2013/11/01 00:00 [pmc-release] AID - IAI.00734-12 [pii] AID - 00734-12 [pii] AID - 10.1128/IAI.00734-12 [doi] PST - ppublish SO - Infect Immun. 2013 May;81(5):1741-50. doi: 10.1128/IAI.00734-12. Epub 2013 Mar 11.