Helping killer T cells fight Chlamydia infections

Cytotoxic T Cell Mediated Immunity to Chlamydia

NIH-funded research Harvard Medical School · NIH-11143808

Researchers are trying to improve killer (CD8) T cell responses to better protect people from repeat Chlamydia trachomatis infections.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionHarvard Medical School NIH-funded
Lab location1 site (Boston, United States)
Project IDNIH-11143808 on NIH RePORTER

What this research studies

This work uses lab and animal experiments to find out why CD8+ "killer" T cells respond to Chlamydia trachomatis but fail to form strong memory that prevents repeat infections. The team studies immune cells, transfers protective CD8+ cells into mice, and examines how memory responses are suppressed after initial infection. They will test vaccine formulations and delivery approaches, including adjuvants and nanoparticle carriers, to stimulate durable CD8+ T cell protection. Promising findings could guide development of human vaccines or clinical trials to reduce repeat infections and long-term reproductive damage.

Who could benefit from this research

Good fit: People with current or past Chlamydia trachomatis infection or those at high risk for infection would be the most likely candidates for future trials based on this work.

Not a fit: Patients with unrelated conditions or those seeking immediate treatment for an active infection are unlikely to receive direct benefit from this basic and preclinical research right now.

Why it matters

Potential benefit: Could lead to vaccines or immune-based approaches that prevent repeat chlamydia infections and reduce reproductive tract damage.

How similar studies have performed: Animal studies have shown CD8+ T cells can protect against chlamydia, but effective human vaccines remain unproven, so this work builds on promising mouse data while addressing known barriers to memory formation.

Where this research is happening

Boston, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.