Abstract: The present invention provides (1) an agent for the prevention or treatment of an estrogen receptor-negative and HER2-negative breast cancer comprising an Akt inhibitor, (2) an agent for the prevention or treatment of an estrogen receptor-negative, progesterone receptor-negative and HER2-negative breast cancer comprising an Akt inhibitor, (3) a method of screening an agent for the prevention or treatment of a breast cancer which is negative for hormone receptors such as an estrogen receptor, a progesterone receptor, etc. and is negative for HER2, which comprises using an Akt inhibitory activity as an indicator; and so on.

Abstract: The present invention provides cancer treatment preparations of excellent targetability. The sugar chain-modified liposomes of the present invention, which contain an aromatase inhibitor, anti-androgenic agent, lyase inhibitor, GnRH agonist, GnRH antagonist, anti-angiogenic agent, tyrosine kinase inhibitor, serine-threonine kinase inhibitor, antibody having an anticancer activity, ansamitocin, capecitabine, celmoleukin, docetaxel hydrate, gemcitabine hydrochloride, oxaliplatin, prednisolone, tegafur-uracil mixtures, zinostatin stimalamer or arsenic trioxide may be used as cancer treatment preparations having an excellent targetability.

Abstract: The present invention provides a novel inhibitor for inhibiting synthesis of a PI3 kinase-dependent inflammatory cytokine in vivo in a vertebrate and a method for inhibiting the same. More particularly, the present invention provides a suppressor for suppressing a cell-mediated immune response and a method for suppressing the same, as well as an activator for activating a humoral immune response and a method for activating the same. In the present invention, by administering Li ion to a living body to inhibit synthesis of an inflammatory cytokine, a cell-mediated immune responses can be suppressed, and immune-mediated inflammatory disorders (IMIDs) can be treated.