Investigating how Cathepsin S affects pain in dry eye conditions

Role of Cathepsin S in Dry Eye Associated Neuropathic Pain

NIH-funded research University of Southern California · NIH-10671531

This study is looking at how a specific protein called Cathepsin S affects nerve pain related to dry eye syndrome, especially in older adults who often feel a lot of discomfort even when their eyes don’t look too bad, with hopes of finding new ways to help relieve that pain.

Quick facts

Grant typeR21 grant
Study typeNIH-funded research
Funding institutionUniversity of Southern California NIH-funded
Lab location1 site (Los Angeles, UNITED STATES)
Project IDNIH-10671531 on NIH RePORTER

What this research studies

This research focuses on understanding the role of Cathepsin S in the development of neuropathic pain associated with dry eye syndrome. It aims to explore how this protease influences inflammation and nerve responses in the eye, particularly in older adults who may experience severe symptoms despite minimal clinical signs. By using a mouse model, the study will examine the neurobiological mechanisms involved and assess potential therapeutic targets for alleviating pain. The findings could lead to new treatment strategies for patients suffering from chronic dry eye pain.

Who could benefit from this research

Good fit: Ideal candidates for this research are older adults experiencing severe dry eye symptoms and associated neuropathic pain.

Not a fit: Patients with dry eye who do not experience neuropathic pain or those with other underlying ocular conditions may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could provide new insights and treatment options for patients suffering from chronic pain associated with dry eye syndrome.

How similar studies have performed: Previous research has shown that targeting Cathepsin S in other neuropathic pain conditions has been effective, suggesting potential for success in this novel application.

Where this research is happening

Los Angeles, 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.