Abstract:
본 발명은 세포내 침투능 및 표적 핵산 염기서열 특이적 가수분해능을 지닌 핵산 가수분해 항체, 이의 제조방법 및 이를 포함하는 약학 조성물에 관한 것으로, 상세하게는 세포 침투능을 가지면서 기질 특이성이 없는 핵산 가수분해 항체의 특정 부위를 변화시켜 핵산 가수분해 특성을 유지한 상태에서 서열 특이성을 갖도록 항체공학을 이용하여 개량함으로써, 특별한 외부 단백질 전달 시스템의 도움 없이 개량된 핵산 가수분해 항체가 스스로 세포내로 침투하여 세포질에 위치하거나 혹은 개량된 핵산 가수분해 항체를 세포 내부에서 발현시켰을 때 특정염기서열을 지닌 단일가닥/이중가닥의 표적 핵산에 특이적으로 결합하고 이를 가수분해하는 능력을 가져 특정 유전자의 발현을 감소시키는 것을 특징으로 한다.
Abstract:
An antiviral agent is provided to exhibit advantageous effects of selectively degrading foreign nucleic acid chains invaded in an animal cell and have no cytotoxicity to the animal cell, thereby causing no death of the animal cell. An anti-viral agent against animal viruses comprises: a protein which has the binding capacity and the decomposing capacity regarding a foreign nucleic acid chain invading animal cells and shows no toxicity on the animal cells; or a nucleic acid encoding the same protein as an effective ingredient, wherein the protein is recovered from an auto-immune disease induced animal and is an immunoglobulin or a fragment thereof having the binding capacity and the decomposing capacity regarding the nucleic acid chain. Further, the immunoglobulin is an immunoglobulin G.
Abstract:
PURPOSE: A composition containing anti-DR4 humanized antibody for preventing or treating cancer is provided to minimize immune rejection of anti-DR4 mouse antibody and to induce DR4-expressing cancer cell apoptosis. CONSTITUTION: An anti-DR4 humanized antibody which specifically binds to DR4 contains an amino acid sequence of sequence number 14. The anti-DR4 humanized antibody is encoded by cDNA of sequence number 13. The anti-DR4 humanized antibody contains a heavy chain variable region with an amino acid of sequence number 2, and a light chain variable region with an amino acid sequence of sequence number 4.
Abstract:
PURPOSE: A composition containing death receptor 5(DR5) is provided to induce cancer cell apoptosis or TRAIL-sensitivity and to prevent or treat cancer. CONSTITUTION: An anti-DR5 antibody which specifically binds to DR5 comprises an amino acid of sequence number 7 or 39. The anti-DR5 antibody contains heavy chain variable region of amino acid sequence numbers 1, 2, and 3 and light chain variable region of amino acid sequence of sequence numbers 4, 5, and 6. The light chain variable region has an amino acid of sequence number 27 or 37. The heavy chain variable region has an amino acid sequence of sequence number 28 or 38.
Abstract:
PURPOSE: A nucleic acid hydrolysis antibody is provided to replace and supplement gene silence technique such as siRNA and to reduce target protein expression. CONSTITUTION: A nucleic acid hydrolysis antibody has intracellular infiltration ability and specifically binds to single strand/double stran target nucleic acid having specific nucleotide sequence. The target nucleic acid is G18 or Her218. G18 has a nucleotide sequence of sequence number 12. The antibody has an amino acid sequence selected from sequence numbers 14 to 24. The antibody is encodes by DNA gene having a nucleotide selected from sequence numbers 25 to 35. The antibody is entire IgG, heavy chain variable region single domain, light chain variable region single domain, single chain variable region fragement (scFv), (scFv)2, Fab, Fab', F(ab')2, diabody or dsFv.
Abstract:
PURPOSE: A humanized antibody having nucleic acid hydrolysis ability and cancer cell infiltration ability is provided to specifically bind to and hydrolyze a nucleic acid and to ensure low immune reaction in a human body. CONSTITUTION: An immunoglobulin or single side chain antibody(scFv) fragment contains epitope of heavy chain variable region or light chain variable region. The immunoglobulin is immunoglobulin G, humanized 3D8 antibody. The heavy chain variable region is a protein comprising a sequence of sequence number 15. The VL is a protein comprising a sequence of sequence number 16. A composition for preventing or treating cancer contains the immunoglobulin or single side chain antibody(scFv) fragment as an active ingredient.
Abstract:
본 발명은 세포사멸 수용체 5 (death receptor 5; DR5)에 특이적으로 결합하는 항체 및 이를 포함하는 암 예방 또는 치료용 조성물에 관한 것으로, 상보성 결정 영역에 서열번호 1 내지 3의 아미노산 서열을 갖는 중쇄 가변영역 및 서열번호 4 내지 6의 아미노산 서열을 갖는 경쇄 가변영역을 포함하는 항체; 및 상보성 결정 영역에 서열번호 7 내지 9의 아미노산 서열을 갖는 중쇄 가변영역 및 서열번호 10 내지 12의 아미노산 서열을 갖는 경쇄 가변영역을 포함하는 항체로 이루어지는 군으로부터 선택되고, DR5에 특이적으로 결합하는 본 발명의 항체는 TRAIL-민감성 암세포뿐만 아니라 TRAIL-저항성 암세포에서도 DR5를 통한 자식작용에 의한 세포사멸 (autophagic cell death)을 유도하므로, 다양한 암의 예방 또는 치료에 사용될 수 있다.