Joyce A. Ibana, Ph.D.

Associate Professor 3
MMicrobiology Academic Group Member
Ph.D. in Microbiology and Immunology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA, 2011
Research Lab: Immunopharmacology Research Laboratory


Bio 150 – Fundamentals of Cell & Molecular Biology
Bio 151 – Fundamentals of Immunobiology
Bio 250 – Advanced Cell & Molecular Biology
Bio 251 – Advanced Immunobiology
Micro 251 – Microbial Pathogenesis
Micro 296 – Seminar
MS 397 – Molecular Targets of Anti-cancer Agents
MS 398 – Biological and Social Structures and Progression


Reproductive Immunology, Host-Pathogen Interactions, Drug Discovery


1. Michael Angelo Nicdao PhD in Biology (Candidate)
2. Ivan Christian Imperial M.D. PhD in Biology Student
3. Fredmore Orosco PhD in Biology (Candidate)
4. Maevel Romero MS Microbiology
5. Francis Fontanilla MS Biology
6. Troyss Pilapil MS Microbiology
7. Jose Miguel Robes MS Microbiology
8. Giann Dellosa MS Biology
9. Janina Guarte MS Microbiology

  • Ibana, JA, Sherchand, SP, Fontanilla, FL, Nagamatsu, T, Schust, DJ, Quayle, AJ, & Aiyar, A. Chlamydia trachomatis-infected cells and uninfected-bystander cells exhibit diametrically opposed responses to interferon gamma. Scientific Reports 2018 May 31; 8, 8476.
  • Albritton, H.L., Kozlowski, P.A., Lillis, R.A., McGowin, C.L., Siren, J.D., Taylor, S.N., Ibana, J.A., Buckner, L.R., Shen, L. and Quayle, A.J., 2017. A novel whole-bacterial enzyme linked-immunosorbant assay to quantify Chlamydia trachomatis specific antibodies reveals distinct differences between systemic and genital compartments. PLoS One, 12(8), p.e0183101.
  • Marquez, C.M.D., Ibana, J.A. and Velarde, M.C., 2017. The female reproduction and senescence nexus. American Journal of Reproductive Immunology, 77(5).
  • Ibana JA. Towards Excellence in Science Research: A UP Research Guidebook, Copyright 2017 University of the Philippines “Chapter 6 : Gaining competency in science research” page 96.
  • Ibana, J., Romero, M. and Michael, A.N., 2017. P-328 Therapeutic Effects of 1-Methyl Tryptophan and Lactobacillus spp. on AOM/DSS-Induced Institute of Cancer Research (ICR) Mouse Model. Inflammatory Bowel Diseases, 23, pp.S104-S105.
  • Imperial, I.C. and Ibana, J.A., 2016. Addressing the antibiotic resistance problem with probiotics: reducing the risk of its double-edged sword effect. Frontiers in Microbiology, 7.
  • Sherchand, S., Ibana, J.A., Quayle, A.J. and Aiyar, A., 2016. Cell Intrinsic Factors Modulate the Effects of IFNγ on the Development of Chlamydia trachomatis. Journal of Bacteriology & Parasitology, 7(4).
  • Sherchand SP, Ibana JA, Zea AH, Quayle AJ, Aiyar A. The High-Risk Human Papillomavirus E6 Oncogene Exacerbates the Negative Effect of Tryptophan Starvation on the Development of Chlamydia trachomatis. PLoS One. 2016 Sep 22;11(9).
  • Ibana, J.A., Cutay, S.J., Romero, M. and Schust, D.J., 2016. Parallel Expression of Enzyme Inhibitors of CD8T Cell Activity in Tumor Microenvironments and Secretory Endometrium. Reproductive Sciences, 23(3), pp.289-301.
  • Ibana JA, Myers L, Porretta C, Lewis M, Taylor SN, Martin DH, Quayle AJ. 2012. The major CD8 T cell effector memory subset in the normal and C. trachomatis-infected human endocervix is low in perforin. BMC Immunology 13:(6).
  • Schust DJ, Ibana JA*, Buckner LR, Ficarra M, Sugimoto J, Amedee AM, Quayle AJ. 2012. Potential Mechanisms for Increased HIV-1 Transmission Across the Endocervical Epithelium During C. trachomatis Infection. Current HIV Research 10(3):218-27. Review (*Co-first author)
  • Caesar G, Ibana J, Kei Kawana K, Quayle AJ, Schust DJ. Host-pathogen co-evolution: Chlamydia trachomatis modulates surface ligand expression in genital epithelial cells to evade immune recognition. In Prof Mihai Mares (ed) Chlamydia, In Tech Publishers, 2012.
  • Ibana JA and Schust DJ. Chapter 86: Chlamydia trachomatis. In Winn HN, Chervenak FC, and Romero R (eds), Clinical Maternal Fetal Medicine Online Second Edition, Informa Healthcare, London, 2012.
  • Ibana JA, Aiyar A, Quayle AJ, Schust DJ. 2012. Modulation of MICA on the surface of Chlamydia trachomatis-infected endocervical epithelial cells promotes NK cell-mediated killing. FEMS Immunology and Medical Microbiology 65(1):32-42.
  • Ibana JA, Belland RJ, Zea AH, Schust DJ, Nagamatsu T, AbdelRahman YM, Tate DJ, Beatty WL, Aiyar AA, Quayle AJ. 2011. Inhibition of indoleamine 2,3-dioxygenase activity by levo-1-methyl tryptophan blocks gamma interferon-induced Chlamydia trachomatis persistence in human epithelial cells. Infection and Immunity 79(11):4425-37 (Featured as Issue Cover)
  • Ibana JA, Schust DJ, Sugimoto J, Nagamatsu T, Greene SJ, Quayle A. 2011. Chlamydia trachomatis immune evasion via downregulation of MHC class I surface expression involves direct and indirect mechanisms. Infectious Diseases Obstetrics and Gynecology. 420905. Epub 2011 May 29.
  • Ibana JA Finding my niche in Science In Padlan, E. Saloma, C and Concepcion G. (eds.) Selected Essays on Science and Technology for Securing a Better Philippines, University of the Philippine Press, 2009
  • Ficarra M, Ibana JS, Poretta C, Ma L, Myers L, Taylor SN, Greene S, Smith B, Hagensee M, Martin DH, Quayle AJ. 2008. A Distinct Cellular Profile Is Seen in the Human Endocervix During Chlamydia trachomatis Infection. American Journal of Reproductive Immunology 60(5):415‐25.
  • Kawana K, Quayle AJ, Ficarra M, Ibana JA, Shen L, Kawana Y, Yang H, Marrero L, Yavagal S, Greene SJ, Zhang YX, Pyles RB, Blumberg RS, Schust DJ. 2007. CD1d degradation in Chlamydia trachomatis-infected epithelial cells is the result of both cellular and chlamydial proteasomal activity. Journal of Biological Chemistry 282(10):7368‐75.
  • David MP, Asprer JJ, Ibana JS, Concepcion GP, Padlan EA. 2007. A study of the structural correlates of affinity maturation: antibody affinity as a function of chemical interactions, structural plasticity and stability. Molecular Immunology 44(6):1342‐51.
  • Lazaro JE, Nitcheu J, Mahmoudi N, Ibana JA, Mangalindan GC, Black GP, Howard‐Jones AG, Moore CG, Thomas DA, Mazier D, Ireland CM, Concepcion GP, Murphy PJ, Diquet B. 2006. Antimalarial activity of crambescidin 800 and synthetic analogues against liver and blood stage of Plasmodium sp. Journal of Antibiotics 59(9):583‐90.