The present invention relates to filamentous, i.e. thread-like nanoparticles comprising sterol and a component derived from Quillaja saponaria Molina selected from quillaja acid and quillaja saponin. More particularly, the invention relates to the use of said thread-like nanoparticles in vaccines and drug delivery or adsorption systems systems, methods for their production and uses thereof, such as for use as a vaccine adjuvant and in cancer therapy.
