Baylor College of Medicine Researchers Eradicate Solid Tumors by Modifying Genetic Triggers in Regulatory T Cells

Baylor researchers discover that knocking out the SRC-3 gene in immune cells can eradicate glioblastoma and lung cancer. Read about this side effect-free therapy.

By: AXL Media

Published: Mar 27, 2026, 9:25 AM EDT

Source: Information for this report was sourced from Baylor College of Medicine

Reprogramming the Gatekeepers of the Immune System

A breakthrough study from Baylor College of Medicine has identified a method to flip the internal switch of regulatory T cells, known as Tregs, from protecting tumors to attacking them. Traditionally, these cells act as a shield for malignant growths, creating a "cold" environment that repels the body’s natural killer cells. By removing the steroid receptor coactivator 3 gene, researchers found that these modified cells instead infiltrate solid tumors and release chemical signals that recruit a massive immune assault.

Converting Immunological Deserts into Active Battlefields

The distinction between "hot" and "cold" tumors is a primary hurdle in modern oncology, as many solid cancers successfully hide from the immune system. According to Dr. Sang Jun Han, the elimination of the SRC-3 gene allows Tregs to modify the surrounding environment to favor tumor elimination rather than suppression. Once the gene is knocked out, these cells proliferate extensively within the tumor mass, effectively turning a defensive barrier into a beacon for cytotoxic T cells to begin the eradication process.

Overcoming the Resistance of Deadly Glioblastomas

Glioblastoma is notoriously resistant to treatment due to its immunologically "cold" nature, yet the study revealed a complete response in animal models using the modified cells. While control subjects saw rapid tumor growth and zero survival past 41 days, mice treated with the gene-modified cells showed total suppression of brain tumor growth. This shift indicates that the treatment can successfully breach the highly restrictive environments of some of the most aggressive human cancers.