摘要:
Methods for purifying authentic, properly folded IGF polypeptides from yeast transformants are disclosed. The methods include a refolding step and provide for high yields of authentic IGF from a variety of yeast strains.
摘要:
Methods for purifying authentic, properly folded IGF polypeptides from yeast transformants are disclosed. The methods include a refolding step and provide for high yields of authentic IGF from a variety of yeast strains.
摘要:
Disclosed is an improved process for obtaining purified, monomeric, intact, correctly-folded insulin-like growth factor-I (also known as somatomedin-C). The improvements, consisting primarily of the addition of an IGF-I unfolding/refolding step and the substitution of a reverse phase chromatography step for a gel filtration chromatography step result in a three-fold increase in final yield. The process includes the following steps, in order: first cation exchange, unfolding/refolding, hydrophobic interaction chromatography, second cation exchange, and reverse phase chromatography.
摘要:
Methods for purifying authentic, properly folded IGF polypeptides from yeast transformants are disclosed. The methods include a refolding step and provide for high yields of authentic IGF from a variety of yeast strains.
摘要:
Highly purified preparations of TFPI or TFPI analogs can be prepared using a method that generally involves the following steps: (1) expression of TFPI or TFPI analog in E. coli, (2) isolation of refractile bodies, (3) dissolution of the refractile bodies and refolding of the expressed TFPI or TFPI analog, (4) SP-Sepharose fast flow (FF) chromatography, (5) a first concentration and diafiltration step, (6) Q-Sepharose high (HP) performance chromatography, (7) butyl hydrophobic interaction chromatography (HIC), (8) SP-Sepharose HP chromatography, and (9) a second concentration/diafiltration step. Less than about 12% of the TFPI or TFPI analog molecules in such preparations are modified TFPI or TFPI analog species (i.e., oxidized, carbamylated, acetylated, deamidated, aggregated, or misfolded species).
摘要:
The present invention is directed to an isolated and purified, recombinant, unglycosylated and dimeric CSF-1, the dimeric CSF-1 being biologically active and essentially endotoxin and pyrogen-free, the dimeric CSF-1 consisting essentially of two monomeric human CSF-1 subunits. The present invention is further directed to pharmaceutical compositions comprising the same.
摘要:
The present invention relates to the production of CSF-1 heterodimers and pharmaceutical formulations of the heterodimers. The heterodimers can be formed using CSF-1 monomers that have variations in sequence, N or C-terminal processing. For example, CSF/C.gradient.150 can be dimerized with LCSF/C.gradient. 190 to form a heterodimer. Dimerization may occur by separately preparing homodimers and mixing them together under the appropriate conditions. Thereafter, homodimers may be separated from the heterodimers by various chromatographic techniques. Once the heterodimers are isolated, pharmaceutical preparations can be prepared.
摘要翻译:本发明涉及产生异源二聚体的CSF-1异二聚体和药物制剂。 异二聚体可以使用具有序列变化,N或C末端加工的CSF-1单体形成。 例如,CSF / C NABLA 150可以用LCSF / C NABLA 190二聚化以形成异二聚体。 二聚可以通过单独制备同型二聚体并在合适的条件下将它们混合在一起而发生。 此后,可以通过各种色谱技术将同二聚体与异二聚体分离。 一旦异源二聚体被分离,就可以制备药物制剂。
摘要:
A process for recovering dimeric, biologically active CSF-1 from bacterially expressed recombinant CSF1 genes is described. The process comprises recovery of the solubilized monomeric form, followed by dimerization under refolding conditions and further purification of the dimer. Heterodimers may also be produced by this process.
摘要:
The present invention is directed to a biologically active CSF-1 dimer comprising a first CSF-1 monomer and a second CSF-1 monomer, wherein at least one of the monomers is truncated at the C-terminus after residue position 223. The dimers also include point mutations in one or both of the CSF-1 monomer. The invention also includes pharmaceutical compositions that comprise the CSF-1 dimer in a pharmaceutical excipient.