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Assessing Disaster Resilience of Concrete with Titanium Dioxide Nanoparticles
Published on: November 14, 2025
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Immunomodulatory properties of titanium dioxide nanostructural materials
T Sree Latha1, Madhava C Reddy2, Prasad V R Durbaka3
1Department of Genetics and Genomics, Yogi Vemana University, Kadapa, Andhra Pradesh, India.
Indian Journal of Pharmacology
|April 21, 2018
Summary
Titanium dioxide (TiO2) nanostructural materials, including nanotubes and nanoparticles, were found to suppress immune cell proliferation in vitro. These TiO2 materials reduce T-cell responses by lowering Th1 cytokine levels, suggesting potential immunomodulatory applications.
Area of Science:
- Biomedical Engineering
- Immunology
- Materials Science
Background:
- Titanium dioxide (TiO2) nanostructural materials are utilized in biology and medicine.
- The immunomodulatory mechanisms of TiO2 nanomaterials remain largely unexplored.
- Understanding these mechanisms is crucial for therapeutic applications, such as treating autoimmune disorders.
Purpose of the Study:
- To investigate the in vitro immunomodulatory effects of TiO2 nanostructural materials.
- To elucidate the impact of TiO2 nanoparticles (TNP), nanotubes (TNT), and fine particles (TFP) on immune responses.
- To explore the potential of TiO2 as an immunosuppressant.
Main Methods:
- Utilized H2Ti3O7 titanium dioxide nanotubes (TNT), commercial TiO2 nanoparticles (TNP), and TiO2 fine particles (TFP).
- Assessed in vitro immunomodulatory effects using the mixed lymphocyte reaction (MLR) assay.
- Quantified cell proliferation via MTT assay and measured cytokine profiles using ELISA.
Main Results:
- TiO2 nanostructural materials significantly suppressed splenocyte proliferation in MLR.
- Observed dose-dependent suppression: TNP and TNT (50 μg/ml) showed 20-35% suppression; TFP (100 μg/ml) showed 25-30% suppression.
- ELISA revealed significantly lower levels of Th1 cytokines (interleukin-2, interferon-γ) in MLR cultures.
Conclusions:
- TiO2 nanostructural materials effectively suppress T-cell-mediated immune responses in vitro.
- The observed immunosuppression is likely mediated by the reduction of Th1 cytokine production.
- These findings suggest TiO2 nanomaterials possess immunomodulatory properties with potential therapeutic relevance.
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