Projects per year
Personal profile
Research Interests
Neuro-immunology in brain health and disease
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Area of Expertise
The overarching theme of my research program is to discover novel therapeutics that can reverse immune-mediated neurological dysfunction. My Ph.D. training involved the elucidation of myelin-reactive CD8 T-cells and their ability to target myelin-specific CD4 T-cells. By targeting these putative neuro-pathogenic cells, we could halt the progression of disease in a model of multiple sclerosis (MS). During this time, I became conversant with cellular and molecular immunological techniques, which I employed in murine and human MS studies. My postdoctoral research elucidated the role of B-cells in ischemia-induced brain injury. My postdoctoral fellowship included advanced training in several neuroscientific techniques such as behavior/motor function analysis, in vitro ischemic models, and in vivo stroke models. Now, I am employing the skills and expertise from these two distinct fields, using multi-organismal approaches with the singular focused purpose of reversing primary and secondary (immune-mediated) neurological dysfunction. My overall research goals are to: 1) Identify the role of neuronal-reactive CD8 T-cells in secondary immune-mediated stroke neuropathology. 2) Determine how myelin-reactive CD8 T-cells contribute to functional recovery in multiple sclerosis. 3) Identify other disease targets where myelin-reactive CD8 T-cells can be used as therapies.
Techniques
In vitro - cell culture, flow cytometry, Immunohistochemistry, elisa, spatial transcriptomics, human tissue samples
In Vivo - animal models, surgery, cognitive/memory/sensory/motor performance assay, and cerebral organoids
Education/Academic qualification
MS Biomedical Sciences, Barry University
BS Biology, University of Dallas
Ph.D. Integrative Biology, University of Texas Southwestern Medical Center
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The efficacy of an allosteric modulator of the alpha 7 nicotinic acetylcholine receptor in a murine model of stroke
Hernandez, K., Jones, N. & Ortega, S., 11 Feb 2025, In: Frontiers in Neuroscience. 19Research output: Contribution to journal › Article › peer-review
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Adaptive lymphocyte profiles correlate to brain Aβ burden in patients with mild cognitive impairment
Stowe, A. M., Ireland, S. J., Ortega, S. B., Chen, D., Huebinger, R. M., Tarumi, T., Harris, T. S., Cullum, C. M., Rosenberg, R., Monson, N. L. & Zhang, R., 27 Jul 2017, In: Journal of neuroinflammation. 14, 1, 149.Research output: Contribution to journal › Article › peer-review
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The disease-ameliorating function of autoregulatory CD8 T cells is mediated by targeting of encephalitogenic CD4 T cells in experimental autoimmune encephalomyelitis
Ortega, S. B., Kashi, V. P., Tyler, A. F., Cunnusamy, K., Mendoza, J. P. & Karandikar, N. J., 1 Jul 2013, In: Journal of Immunology. 191, 1, p. 117-126 10 p.Research output: Contribution to journal › Article › peer-review
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Immune regulatory CNS-reactive CD8+T cells in experimental autoimmune encephalomyelitis
York, N. R., Mendoza, J. P., Ortega, S. B., Benagh, A., Tyler, A. F., Firan, M. & Karandikar, N. J., Aug 2010, In: Journal of Autoimmunity. 35, 1, p. 33-44 12 p.Research output: Contribution to journal › Article › peer-review
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Transient regulatory T-cells: A state attained by all activated human T-cells
Pillai, V., Ortega, S. B., Wang, C. K. & Karandikar, N. J., Apr 2007, In: Clinical Immunology. 123, 1, p. 18-29 12 p.Research output: Contribution to journal › Article › peer-review