METHOD FOR INHIBITING AN INTRA-CELLULAR ACTIVATED RAS USING AN INTACT ANTIBODY OF AN IMMUNOGLOBULIN TYPE WITH THE ABILITY TO PERFORMANCE IN CYTOSOL, AND ITS APPLICATION
КИМ, Ён Сон (KR),ЦОЙ, Тон Ки (KR),СИН, Сон Мин (KR),КИМ, Сон Хун (KR)
申请号：
RU2017103679
公开号：
RU2017103679A
申请日:
2015.07.22
申请国别(地区):
RU
年份:
2018
代理人:
摘要：
The present invention relates to a method for inhibiting intracellular activated RAS using an intact immunoglobulin-type antibody having the ability to penetrate the cytosol. The present invention also relates to a heavy-chain variable region (VH) which induces an intact immunoglobulin-type antibody to actively penetrate the cytosol of living cells through endocytosis and endosomal escape and to bind to activated RAS in the cytosol, and to an antibody comprising the same. The present invention also relates to a method of inhibiting the growth of cancer or tumor cells and a method of treating cancer or tumor, by use of the antibody. The present invention also relates to a method for screening a heavy-chain variable region that binds specifically to RAS in the cytosol. The present invention also relates to a biologically active molecule fused to the antibody and selected from the group consisting of peptides, proteins, small-molecule drugs, nanoparticles and liposomes. The present invention also relates to a composition for prevention, treatment or diagnosis of cancer, comprising: the antibody； or a biological active molecule fused to the antibody and selected from the group consisting of peptides, proteins, small-molecule drugs, nanoparticles and liposomes. The present invention also relates to a polynucleotide that encodes the light-chain variable region and the antibody. According to the present invention, the method for inhibiting intracellular activated RAS using an intact immunoglobulin-type antibody having the ability to penetrate the cytosol is achieved by allowing the antibody to penetrate living cells and to specifically recognize activated (GTP-bound) RAS in the cytosol. Thus, the antibody can target activated (GTP-bound) RAS in the cytosol of living cells and inhibit the activity of the RAS. Furthermore, the antibody light-chain variable region according to the present invention and an antibody comprising the same is able to penetrate living cells and lo
