摘要:
The present invention described and shown in the specification and drawings provides novel recombinant DT-based immunotoxins, and, more specifically anti-T cell immunotoxin fusion proteins. Also provided are immunotoxins that can be expressed in bacterial, yeast, or mammalian cells. The invention also provides means for expression of the immunotoxin fusion protein. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
摘要:
The present invention relates to a method of expressing an immunotoxin in Pichia pastoris strain mutated to toxin resistance comprising a) growing the Pichia pastoris in a growth medium comprising an enzymatic digest of protein and yeast extract and maintaining a dissolved oxygen concentration at 40% and above; and b) performing methanol induction with a limited methanol feed of 0.5-0.75 ml/min/IO L of initial volume during induction along with a continuous infusion of yeast extract at a temperature below 17.5° C., antifoaming agent supplied up to 0.07%, agitation reduced to 400 RPM, and the induction phase extended out to 163 h.
摘要翻译:本发明涉及一种在对抗毒素抗性进行突变的巴斯德毕赤酵母菌株中表达免疫毒素的方法,包括:a)在含有蛋白质和酵母提取物的酶促消化物的生长培养基中培养巴斯德毕赤酵母,并将溶解氧浓度保持在40%以上 ; 和b)在诱导期间以0.5-0.75ml / min / IOL的初始体积的有限甲醇进料进行甲醇诱导,同时在低于17.5℃的温度下连续输注酵母提取物,消泡剂提供高达0.07% ,搅拌降至400RPM,诱导期延长至163小时。
摘要:
The present invention described and shown in the specification and drawings provides novel recombinant DT-based immunotoxins, and, more specifically anti-T cell immunotoxin fusion proteins. Also provided are immunotoxins that can be expressed in bacterial, yeast, or mammalian cells. The invention also provides means for expression of the immunotoxin fusion protein. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
摘要:
The present invention described and shown in the specification and drawings provides novel recombinant DT-based immunotoxins, and, more specifically anti-T cell immunotoxin fusion proteins. Also provided are immunotoxins that can be expressed in bacterial, yeast, or mammalian cells. The invention also provides means for expression of the immunotoxin fusion protein.
摘要:
Disclosed is a method of inhibiting a rejection response by a primate to a transplanted organ. One exposes the primate to a mutant diphtheria toxin linked to anti-CD3 antibody so as to largely eliminate the host's peripheral blood T cell lymphocyte population. At the same time as, or after, the exposure step one administers to the primate's thymus gland donor lymphocytes. Transplantation of the organ follows. The primate is tolerized to the transplanted organ.
摘要:
Crosslinking reagents for amino group-containing compounds are provided, which crosslinkers can be cleaved under mildly acidic conditions. The crosslinkers can be used to crosslink biologically active substances to be delivered to the cells, wherein the crosslinker will be cleaved in the mildly acidic conditions within the cell.
摘要:
A reagent and the protocol for the treatment of Graft Versus Host Disease is disclosed. Monoclonal antibodies specific for T-lymphocytes in human donor bone marrow are covalently linked to separate ricin toxin, combined in a mixture to form a treatment reagent, and combined with bone marrow removed from a human donor. The bone marrow-reagent mixture is then infused into an irradiated recipient. This protocol virtually eliminates T-lymphocyte activity, the cause of Graft Versus Host Disease.
摘要:
The receptor specificity of toxins can be altered by coupling the intact toxin to monoclonal antibodies directed to the cell surface antigen Thy 1.2. Monoclonal antibody Thy 1.2-ricin (or ricin A chain) is a pretreatment reagent used to eliminate graft-versus-host disease (GVHD) in bone marrow transplants.
摘要:
The present invention described and shown in the specification and drawings provides novel recombinant DT-based immunotoxins, and, more specifically anti-T cell immunotoxin fusion proteins. Also provided are immunotoxins that can be expressed in bacterial, yeast, or mammalian cells. The invention also provides means for expression of the immunotoxin fusion protein. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.