Oncolytic virus constructed by based on the colorectal cancer cells-specific infection Newcastle disease virus for colorectal cancer treatment and its composition
The present invention relates to: an M2-LVP-K1 virus comprising a mutant sialic acid binding domain specific to colon cancer cells; and a composition for treating colon cancer, comprising the same and, more specifically, to a recombinant Newcastle disease virus in which a mutant sialic acid binding...
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Zusammenfassung: | The present invention relates to: an M2-LVP-K1 virus comprising a mutant sialic acid binding domain specific to colon cancer cells; and a composition for treating colon cancer, comprising the same and, more specifically, to a recombinant Newcastle disease virus in which a mutant sialic acid binding domain of the present invention, prepared using a directed evolution technology, is substituted for a normal sialic acid binding domain in a cell binding receptor HN protein so that specific infectivity for HCT116 cells is increased. The recombinant Newcastle disease virus M2-LVP-K1 having improved specific infectivity for colon cancer cells has a better HCT116 cell-killing effect than a conventional normal recombinant Newcastle disease virus, and it has been identified through in vivo experiments that the excellent effect of inhibiting cancer tissue growth is provided. In addition, the present invention relates to a therapeutic viral preparation in which a mutant recombinant Newcastle disease virus can induce a reduction in clinical symptoms, and partial or complete regression through colon cancer cell death or colon cancer tissue reduction.
본 발명은 대장암 세포 특이적 mutant sialic acid binding domain을 포함하는 M2-LVP-K1 바이러스 및 이를 포함한 대장암 치료용 조성물에 관한 것으로 본 발명의 mutant sialic acid binding domain은 directed evolution 기술을 이용하여 제작된 것으로 세포 결합 receptor 인 HN 단백질에 정상적인 sialic acid binding domain과 치환되어 제작된 재조합 뉴캐슬병 바이러스로서 HCT116 세포에 대한 특이적 감염성이 향상되게 하였다. 대장암 세포 특이적 감염성이 향상된 M2-LVP-K1 재조합 뉴캐슬병 바이러스는 HCT116 세포 사멸 효과가 기존의 정상적인 재조합 뉴캐슬병 바이러스에 비해 향상되었으며 in vivo 실험을 통해서 암조직 성장 억제 효과가 우수함을 확인하였다. 본 연구에서 제시된 Mutant 재조합 뉴캐슬병 바이러스는 대장암 세포 사멸 또는 대장암 조직 축소를 통해 임상 증상 감소, 부분 관해 또는 완전 관해를 유도할 수 있는 치료용 바이러스 제제에 관한 것이다. |
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