Skip to main content
An official website of the United States government
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

TLR4 agonist G100

A synthetic lipid A derivative and selective toll-like receptor 4 (TLR4) agonist composed of glucopyranosyl lipid-A (GLA) in a stable, oil-in-water emulsion (GLA-SE), with potential immunostimulating and antineoplastic activities. Upon intratumoral administration into the immunosuppressed tumor microenvironment (TME), TLR4 agonist G100 binds to and activates TLR4 on various immune cells, thereby stimulating dendritic cells (DCs), monocytes and macrophages. This activation results in the production of pro-inflammatory cytokines and chemokines. This induces a T helper cell-1 (Th1) immune response and activates a cytotoxic T-lymphocyte (CTL) response against tumor-associated antigens (TAAs) that were released in the TME by tumor cells lysed during cytotoxic treatments, such as radiotherapy. TLR4, a member of the TLR family, plays a key role in the activation of innate immunity.
Synonym:GLA-SE
glucopyranosyl lipid A stable emulsion
glucopyranosyl lipid adjuvant–stable emulsion
TLR-4 agonist G100
TLR-4 agonist GLA-SE
Toll-like receptor 4 agonist G100
Toll-like receptor 4 agonist GLA-SE
Code name:G100
Search NCI's Drug Dictionary