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YUSUF OMOSUN

Title
Faculty RankAssistant Professor
InstitutionMorehouse School of Medicine
DepartmentMicrobiology, Biochemistry, & Immunology
Address720 Westveiw Drive, SW
Hugh Gloster Building
Atlanta GA 30310
Phone4047521705
Fax4047521179
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    Collapse Overview 
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    Research Focus
    Chlamydia trachomatis (Ct) is a major cause of bacterial sexually transmitted disease (STD) in the United States. In 2010, a total of over 1 million chlamydial infections were reported to CDC. Complications caused by Chlamydia in women include pelvic inflammatory disease (PID), ectopic pregnancy and involuntary tubal factor infertility. Chlamydia infections also have a major economic impact in the US, with an estimated total cost of $701 million annually. Although chlamydiae are susceptible to antibiotics, the rampart asymptomatic infections often makes presentation of complications such as Tubal factor infertility (TFI) as the first indication of an infection, and resistant chlamydial strains may be emerging. My research focus involves elucidating the molecular mechanisms in the parthenogenesis of chlamydial infection.
    I am currently involved in three projects which are all related

    1. This project involves the use of IL-10 deficient dendritic cell system which has a distinct advantage for studies of therapeutic strategies and vaccine development to define a set of host immune molecules that regulate the induction of optimum protective immunity against Chlamydia and determine their mechanism of immunomodulation. Identify a set of host molecules such as the inflammasomes that are involved in the immune pathogenesis of Chlamydia disease, and determine their mechanism of action. This study may provide biomarkers for use in drug treatment and vaccine development against chlamydial disease.

    2. This project involves studying the effect of caspase inhibition on infertility and the integrity of Dicer, a caspase-sensitive, fertility promoting ribonuclease III enzyme, and key micro-RNAs in the reproductive system of Ct infected mice. The results from this study will provide new insights into the molecular pathogenesis of TFI with significant implications for new strategies for diagnosis, treatment and prevention of chlamydial complications leading to TFI.

    3. This project proposes to investigate the role of vitamin D in ameliorating the effect of Chlamydia infection, by studying host immune molecules in infected HELA cells, genital tract pathology, inflammatory responses, and rate of pregnancy and fertility of chlamydial infected VDR knockout mice. The knowledge garnered from this study might be useful for designing part of the prevention strategies against Chlamydia by showing the necessity of screening for vitamin D levels as part of the general Chlamydia screening and might be an index of protection against infection as well as sequelae.



    Collapse Research 
    Collapse research activities and funding
    SC2HD086066     (OMOSUN, YUSUF OSEOBHUNU)Jun 24, 2015 - Apr 30, 2019
    NIH
    Discovering novel biomarkers predictive of Tubal infertility caused by Chlamydia
    Role: Principal Investigator

    R16AI175094     (OMOSUN, YUSUF OSEOBHUNU)May 24, 2023 - Apr 30, 2027
    NIH
    Determining the role of circadian rhythms in Chlamydia associated tubal infertility
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
    Newest   |   Oldest   |   Most Cited   |   Most Discussed   |   Timeline   |   Field Summary   |   Plain Text
    PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Tanner T, Medhavi FNU, Richardson S, Omosun YO, Eko FO. In silico design and analysis of a multiepitope vaccine against Chlamydia. Pathog Dis. 2024 Feb 07; 82. PMID: 38889932.
      Citations:    Fields:    Translation:HumansAnimalsCells
    2. Richardson S, Bell CR, Medhavi F, Tanner T, Lundy S, Omosun Y, Igietseme JU, Eko FO. A novel cold-chain free VCG-based subunit vaccine protects against Chlamydia abortus-induced neonatal mortality in a pregnant mouse model. Front Immunol. 2023; 14:1243743. PMID: 37915580.
      Citations: 1     Fields:    Translation:HumansAnimalsCells
    3. Ahmad TA, Omosun YO. Editorial: Global excellence in molecular immunology and therapeutics: Africa 2021. Front Immunol. 2023; 14:1247148. PMID: 37520543.
      Citations:    Fields:    Translation:Humans
    4. Zhao L, Lundy SR, Eko FO, Igietseme JU, Omosun YO. Genital tract microbiome dynamics are associated with time of Chlamydia infection in mice. Sci Rep. 2023 06 02; 13(1):9006. PMID: 37268696.
      Citations: 2     Fields:    Translation:AnimalsCells
    5. Idowu AO, Omosun YO, Igietseme JU, Azenabor AA. The COVID-19 pandemic in sub-Saharan Africa: The significance of presumed immune sufficiency. Afr J Lab Med. 2023; 12(1):1964. PMID: 36756213.
      Citations:    
    6. Richardson S, Medhavi F, Tanner T, Lundy S, Omosun Y, Igietseme JU, Carroll D, Eko FO. Cellular Basis for the Enhanced Efficacy of the Fms-Like Tyrosine Kinase 3 Ligand (FL) Adjuvanted VCG-Based Chlamydia abortus Vaccine. Front Immunol. 2021; 12:698737. PMID: 34249004.
      Citations: 1     Fields:    Translation:AnimalsCells
    7. Lundy SR, Abney K, Ellerson D, Igietseme JU, Carroll D, Eko FO, Omosun YO. MiR-378b Modulates Chlamydia-Induced Upper Genital Tract Pathology. Pathogens. 2021 May 07; 10(5). PMID: 34067003.
      Citations:    
    8. Howard S, Richardson S, Benyeogor I, Omosun Y, Dye K, Medhavi F, Lundy S, Adebayo O, Igietseme JU, Eko FO. Differential miRNA Profiles Correlate With Disparate Immunity Outcomes Associated With Vaccine Immunization and Chlamydial Infection. Front Immunol. 2021; 12:625318. PMID: 33692799.
      Citations: 4     Fields:    Translation:AnimalsCellsPHPublic Health
    9. Lundy SR, Richardson S, Ramsey A, Ellerson D, Fengxia Y, Onyeabor S, Kirlin W, Thompson W, Black CM, DeBruyne JP, Davidson AJ, Immergluck LC, Blas-Machado U, Eko FO, Igietseme JU, He Q, Omosun YO. Author Correction: Shift work influences the outcomes of Chlamydia infection and pathogenesis. Sci Rep. 2020 Dec 11; 10(1):22183. PMID: 33311582.
      Citations:    Fields:    
    10. Lundy SR, Richardson S, Ramsey A, Ellerson D, Fengxia Y, Onyeabor S, Kirlin W, Thompson W, Black CM, DeBruyne JP, Davidson AJ, Immergluck LC, Blas-Machado U, Eko FO, Igietseme JU, He Q, Omosun YO. Shift work influences the outcomes of Chlamydia infection and pathogenesis. Sci Rep. 2020 09 21; 10(1):15389. PMID: 32958779.
      Citations: 3     Fields:    Translation:AnimalsCells
    11. Igietseme JU, Partin J, George Z, Omosun Y, Goldstein J, Joseph K, Ellerson D, Eko FO, Pohl J, Bandea C, Black CM. Epidermal Growth Factor Receptor and Transforming Growth Factor ? Signaling Pathways Cooperate To Mediate Chlamydia Pathogenesis. Infect Immun. 2020 03 23; 88(4). PMID: 31964750.
      Citations: 5     Fields:    Translation:AnimalsCells
    12. Lundy SR, Ahmad T, Simoneaux T, Benyeogor I, Robinson Y, George Z, Ellerson D, Kirlin W, Omosun T, Eko FO, Black CM, Blas-Machado U, DeBruyne JP, Igietseme JU, He Q, Omosun YO. Effect of Time of Day of Infection on Chlamydia Infectivity and Pathogenesis. Sci Rep. 2019 08 06; 9(1):11405. PMID: 31388084.
      Citations: 7     Fields:    Translation:HumansAnimalsCells
    13. Pais R, Omosun Y, Igietseme JU, Fujihashi K, Eko FO. Route of Vaccine Administration Influences the Impact of Fms-Like Tyrosine Kinase 3 Ligand (Flt3L) on Chlamydial-Specific Protective Immune Responses. Front Immunol. 2019; 10:1577. PMID: 31333682.
      Citations: 6     Fields:    Translation:AnimalsCells
    14. Benyeogor I, Simoneaux T, Wu Y, Lundy S, George Z, Ryans K, McKeithen D, Pais R, Ellerson D, Lorenz WW, Omosun T, Thompson W, Eko FO, Black CM, Blas-Machado U, Igietseme JU, He Q, Omosun Y. A unique insight into the MiRNA profile during genital chlamydial infection. BMC Genomics. 2019 Feb 18; 20(1):143. PMID: 30777008.
      Citations: 7     Fields:    Translation:HumansAnimalsCells
    15. George Z, Omosun Y, Azenabor AA, Goldstein J, Partin J, Joseph K, Ellerson D, He Q, Eko F, McDonald MA, Reed M, Svoboda P, Stuchlik O, Pohl J, Lutter E, Bandea C, Black CM, Igietseme JU. The molecular mechanism of induction of unfolded protein response by Chlamydia. Biochem Biophys Res Commun. 2019 01 08; 508(2):421-429. PMID: 30503337.
      Citations: 5     Fields:    Translation:HumansAnimalsCells
    16. Omosun YO, Blackstock AJ, Williamson J, van Eijk AM, Ayisi J, Otieno J, Lal RB, Ter Kuile FO, Slutsker L, Shi YP. Association of maternal KIR gene content polymorphisms with reduction in perinatal transmission of HIV-1. PLoS One. 2018; 13(1):e0191733. PMID: 29360870.
      Citations: 2     Fields:    Translation:HumansCellsPHPublic Health
    17. Igietseme JU, Omosun Y, Nagy T, Stuchlik O, Reed MS, He Q, Partin J, Joseph K, Ellerson D, George Z, Goldstein J, Eko FO, Bandea C, Pohl J, Black CM. Molecular Pathogenesis of Chlamydia Disease Complications: Epithelial-Mesenchymal Transition and Fibrosis. Infect Immun. 2018 01; 86(1). PMID: 29084894.
      Citations: 15     Fields:    Translation:AnimalsCells
    18. McKeithen DN, Omosun YO, Ryans K, Mu J, Xie Z, Simoneaux T, Blas-Machado U, Eko FO, Black CM, Igietseme JU, He Q. The emerging role of ASC in dendritic cell metabolism during Chlamydia infection. PLoS One. 2017; 12(12):e0188643. PMID: 29216217.
      Citations: 4     Fields:    Translation:AnimalsCells
    19. Pais R, Omosun Y, He Q, Blas-Machado U, Black C, Igietseme JU, Fujihashi K, Eko FO. Rectal administration of a chlamydial subunit vaccine protects against genital infection and upper reproductive tract pathology in mice. PLoS One. 2017; 12(6):e0178537. PMID: 28570663.
      Citations: 15     Fields:    Translation:AnimalsCells
    20. Ryans K, Omosun Y, McKeithen DN, Simoneaux T, Mills CC, Bowen N, Eko FO, Black CM, Igietseme JU, He Q. The immunoregulatory role of alpha enolase in dendritic cell function during Chlamydia infection. BMC Immunol. 2017 05 19; 18(1):27. PMID: 28525970.
      Citations: 13     Fields:    Translation:AnimalsCells
    21. George Z, Omosun Y, Azenabor AA, Partin J, Joseph K, Ellerson D, He Q, Eko F, Bandea C, Svoboda P, Pohl J, Black CM, Igietseme JU. The Roles of Unfolded Protein Response Pathways in Chlamydia Pathogenesis. J Infect Dis. 2017 02 01; 215(3):456-465. PMID: 27932618.
      Citations: 17     Fields:    Translation:AnimalsCells
    22. Igietseme JU, Omosun Y, Stuchlik O, Reed MS, Partin J, He Q, Joseph K, Ellerson D, Bollweg B, George Z, Eko FO, Bandea C, Liu H, Yang G, Shieh WJ, Pohl J, Karem K, Black CM. Role of Epithelial-Mesenchyme Transition in Chlamydia Pathogenesis. PLoS One. 2015; 10(12):e0145198. PMID: 26681200.
      Citations: 26     Fields:    Translation:HumansAnimalsCells
    23. Gatei W, Gimnig JE, Hawley W, Ter Kuile F, Odero C, Iriemenam NC, Shah MP, Howard PP, Omosun YO, Terlouw DJ, Nahlen B, Slutsker L, Hamel MJ, Kariuki S, Walker E, Shi YP. Genetic diversity of Plasmodium falciparum parasite by microsatellite markers after scale-up of insecticide-treated bed nets in western Kenya. Malar J. 2015 Dec 09; 13 Suppl 1:495. PMID: 26651480.
      Citations: 12     Fields:    
    24. Omosun Y, McKeithen D, Ryans K, Kibakaya C, Blas-Machado U, Li D, Singh R, Inoue K, Xiong ZG, Eko F, Black C, Igietseme J, He Q. Interleukin-10 modulates antigen presentation by dendritic cells through regulation of NLRP3 inflammasome assembly during Chlamydia infection. Infect Immun. 2015 Dec; 83(12):4662-72. PMID: 26371131.
      Citations: 18     Fields:    Translation:AnimalsCells
    25. Pan Q, Pais R, Ohandjo A, He C, He Q, Omosun Y, Igietseme JU, Eko FO. Comparative evaluation of the protective efficacy of two formulations of a recombinant Chlamydia abortus subunit candidate vaccine in a mouse model. Vaccine. 2015 Apr 08; 33(15):1865-72. PMID: 25698486.
      Citations: 15     Fields:    Translation:AnimalsCells
    26. Shah M, Omosun Y, Lal A, Odero C, Gatei W, Otieno K, Gimnig JE, ter Kuile F, Hawley WA, Nahlen B, Kariuki S, Walker E, Slutsker L, Hamel M, Shi YP. Assessment of molecular markers for anti-malarial drug resistance after the introduction and scale-up of malaria control interventions in western Kenya. Malar J. 2015 Feb 14; 14:75. PMID: 25889220.
      Citations: 17     Fields:    Translation:HumansAnimals
    27. Igietseme JU, Omosun Y, Partin J, Goldstein J, He Q, Joseph K, Ellerson D, Ansari U, Eko FO, Bandea C, Zhong G, Black CM. Prevention of Chlamydia-induced infertility by inhibition of local caspase activity. J Infect Dis. 2013 Apr; 207(7):1095-104. PMID: 23303804.
      Citations: 29     Fields:    Translation:HumansAnimalsCells
    28. Iriemenam NC, Shah M, Gatei W, van Eijk AM, Ayisi J, Kariuki S, Vanden Eng J, Owino SO, Lal AA, Omosun YO, Otieno K, Desai M, ter Kuile FO, Nahlen B, Moore J, Hamel MJ, Ouma P, Slutsker L, Shi YP. Temporal trends of sulphadoxine-pyrimethamine (SP) drug-resistance molecular markers in Plasmodium falciparum parasites from pregnant women in western Kenya. Malar J. 2012 Jul 04; 11:134. PMID: 22540158.
      Citations: 47     Fields:    Translation:HumansAnimals
    29. Omosun YO, Blackstock AJ, Gatei W, Hightower A, van Eijk AM, Ayisi J, Otieno J, Lal RB, Steketee R, Nahlen B, ter Kuile FO, Slutsker L, Shi YP. Differential association of gene content polymorphisms of killer cell immunoglobulin-like receptors with placental malaria in HIV- and HIV+ mothers. PLoS One. 2012; 7(6):e38617. PMID: 22715396.
      Citations: 6     Fields:    Translation:HumansCellsCTClinical Trials
    30. Omosun YO, Adoro S, Anumudu CI, Odaibo A, Holder AA, Nwagwu M, Nwuba RI. Total immunoglobulin G and IgG1 subclass levels specific for the MSP-1(19) of Plasmodium falciparum are different in individuals with either processing-inhibitory, blocking or neutral antibodies. Afr Health Sci. 2010 Jun; 10(2):106-10. PMID: 21326959.
      Citations:    Fields:    Translation:HumansAnimals
    31. Okafor CM, Anumudu CI, Omosun YO, Uthaipibull C, Ayede I, Awobode HO, Odaibo AB, Langhorne J, Holder AA, Nwuba RI, Troye-Blomberg M. Cellular responses to modified Plasmodium falciparum MSP119 antigens in individuals previously exposed to natural malaria infection. Malar J. 2009 Nov 23; 8:263. PMID: 19930613.
      Citations: 2     Fields:    Translation:HumansAnimals
    32. Iriemenam NC, Okafor CM, Balogun HA, Ayede I, Omosun Y, Persson JO, Hagstedt M, Anumudu CI, Nwuba RI, Troye-Blomberg M, Berzins K. Cytokine profiles and antibody responses to Plasmodium falciparum malaria infection in individuals living in Ibadan, southwest Nigeria. Afr Health Sci. 2009 Jun; 9(2):66-74. PMID: 19652739.
      Citations: 16     Fields:    Translation:HumansAnimals
    33. Omosun YO, Adoro S, Anumudu CI, Odaibo AB, Uthiapibull C, Holder AA, Nwagwu M, Nwuba RI. Antibody specificities of children living in a malaria endemic area to inhibitory and blocking epitopes on MSP-1 19 of Plasmodium falciparum. Acta Trop. 2009 Mar; 109(3):208-12. PMID: 19081386.
      Citations: 5     Fields:    Translation:HumansAnimalsPHPublic Health
    34. Gruszynski AE, van Deursen FJ, Albareda MC, Best A, Chaudhary K, Cliffe LJ, del Rio L, Dunn JD, Ellis L, Evans KJ, Figueiredo JM, Malmquist NA, Omosun Y, Palenchar JB, Prickett S, Punkosdy GA, van Dooren G, Wang Q, Menon AK, Matthews KR, Bangs JD. Regulation of surface coat exchange by differentiating African trypanosomes. Mol Biochem Parasitol. 2006 Jun; 147(2):211-23. PMID: 16564583.
      Citations: 28     Fields:    Translation:Animals
    35. Omosun YO, Anumudu CI, Adoro S, Odaibo AB, Sodeinde O, Holder AA, Nwagwu M, Nwuba RI. Variation in the relationship between anti-MSP-1(19) antibody response and age in children infected with Plasmodium falciparum during the dry and rainy seasons. Acta Trop. 2005 Sep; 95(3):233-47. PMID: 16055071.
      Citations: 11     Fields:    Translation:HumansAnimals
    36. Nwuba RI, Sodeinde O, Anumudu CI, Omosun YO, Odaibo AB, Holder AA, Nwagwu M. The human immune response to Plasmodium falciparum includes both antibodies that inhibit merozoite surface protein 1 secondary processing and blocking antibodies. Infect Immun. 2002 Sep; 70(9):5328-31. PMID: 12183594.
      Citations: 37     Fields:    Translation:HumansAnimalsCells
    37. Nwuba RI, Anumudu CI, Omosun YO, Sodeinde O, Nwagwu M. Evaluation of a rapid immunochromatographic card test for Plasmodium falciparum in Ibadan, Nigeria. Afr J Med Med Sci. 2001 Mar-Jun; 30(1-2):123-4. PMID: 14510166.
      Citations: 4     Fields:    Translation:HumansAnimals
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