Ribocytokine IL-2 BNT153

**Semantic type:** Amino Acid, Peptide, or Protein|Immunologic Factor|Pharmacologic Substance

**Definition:** A formulation consisting of lipid nanoparticles (LNPs) encapsulating nucleoside-modified messenger RNA (mRNA) encoding the endogenous cytokine interleukin-2 (IL-2), with potential immunostimulating activity. Upon administration, ribocytokine IL-2 BNT153 is taken up by cells and the expressed IL-2 targets and binds to the IL-2 receptor beta subunit (IL2Rb; IL2Rbeta; CD122). The binding of IL-2 to IL2Rb activates IL2Rb-mediated signaling, which activates cytotoxic T-lymphocytes (CTLs) and natural killer (NK) cells, and induces expression of certain cytotoxic cytokines, such as interferon-gamma (IFNg) and transforming growth factor-beta (TGFb). The specific induction of T-cell-mediated cytotoxic immune responses against tumor cells causes tumor cell destruction. IL2Rb plays a key role in the proliferation and activation of effector T-cells.

**Synonyms:** - BNT 153 - BNT-153 - BNT-153 MRNA - BNT153 - Human Interleukin-2 mRNA-encoded BNT153