Science


Hiltonol® is an established Immuno Oncology and Anti Viral drug product and vaccine adjuvant

Hiltonol®, a synthetic dsRNA viral mimic and host-defense activator, mimics nature by combining the essential elements of human immunity. As an experimental viral mimic and broad activator of innate and adaptive immunity, Hiltonol® has broad biological effects in humans, including specific antiviral, immune activating, vaccine adjuvant, and antitumor actions. Important mechanisms of action include:

  • Hiltonol’s® tumor pro-apoptotic effect induces tumor antigen and neoantigen expression. It promotes induction of natural killer cells and dsRNA dependent systems (OAS, PKR)
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  • Hiltonol® is the preferred critical “danger signal” or immune adjuvant for cancer vaccines. Mechanisms include TLR3 and MDA5 mediated systems.

  • Hiltonol® induces killer-cell targeting (chemotaxis) and tumor vascular endothelial infiltration
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  • Hiltonol® supports the hosts ability to overcome immune suppression “checkpoints” in the tumor microenvironment. Via CD8 boost with aPD-1 and APD l-1 checkpoint blockers.

  • Hiltonol® activates immunological memory, facilitating durable tumor responses.

Hiltonol® is a stabilized dsRNA viral mimic and immunomodulator consisting of two long duplexed strands of Poly-inosinic and Polycytidilic acid stabilized with poly-L-Lysine and Carboxymethylcellulose. It induces a broad host-targeted humoral and cellular innate and adaptive immune activation. This includes natural killer cells (NK), dendritic cells (DC), T-cells, and B cells, as well as IFN, various cytokines, chemokines and costimulatory factors. While characterized as a pathogen associated molecular pattern (PAMP) functioning through TLR3, it also signals largely through cytoplasmic dsRNA-dependent helicases, notably MDA5.

Poly ICLC (Hiltonol ®)