Production of recombinant human type I procollagen homotrimer in the mammary gland of transgenic mice
Production of recombinant human type I procollagen homotrimer in the mammary gland of transgenic mice
复制标题
转基因小鼠乳腺中重组人 I 型前胶原同源三聚体的生产
作者:
P. D. Toman;F. Pieper;N. Sakai;C. Karatzas;E. Platenburg;I. de Wit;C. Samuel;A. Dekker;G. Daniels;R. Berg;G. Platenburg
The large scale production of recombinant collagen for use in biomaterials requires an efficient expression system capable of processing a large (>400 Kd) multisubunit protein requiring post-translational modifications. To investigate whether the mammary gland of transgenic animals fulfills these requirements, transgenic mice were generated containing the αS1-casein mammary gland-specific promoter operatively linked to 37 Kb of the human α1(I) procollagen structural gene and 3′ flanking region. The frequency of transgenic lines established was 12%. High levels of soluble triple helical homotrimeric [(α1)3] type I procollagen were detected (up to 8 mg/ml) exclusively in the milk of six out of 9 lines of lactating transgenic mice. The transgene-derived human procollagen chains underwent efficient assembly into a triple helical structure. Although proline or lysine hydroxylation has never been described for any milk protein, procollagen was detected with these post-translational modifications. The procollagen was stable in mil; minimal degradation was observed. These results show that the mammary gland is capable of expressing a large procollagen gene construct, efficiently assembling the individual polypeptide chains into a stable triple helix, and secreting the intact molecule into the milk.
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DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Pihlajaniemi,T;Dickson,LA;Pope,FM;Korhonen,VR;Nicholls,A;Prockop,DJ;Myers,JC
通讯作者:
Myers,JC
DOI:
10.1016/s0021-9258(18)47783-6
发表时间:
1987-11
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
K. Kadler;Y. Hojima;D. J. Prockop
通讯作者:
K. Kadler;Y. Hojima;D. J. Prockop
影响因子:
--
作者:
E. J. Miller;S. Gay
通讯作者:
E. J. Miller;S. Gay
影响因子:
56.9
作者:
TRENTHAM, DE;DYNESIUSTRENTHAM, RA;WEINER, HL
通讯作者:
WEINER, HL
DOI:
--
发表时间:
1989
期刊:
Laboratory investigation; a journal of technical methods and pathology
影响因子:
--
作者:
Leheup,BP;Federspiel,SJ;Guerry-Force,ML;Wetherall,NT;Commers,PA;DiMari,SJ;Haralson,MA
通讯作者:
Haralson,MA