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
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转基因小鼠乳腺中重组人 I 型前胶原同源三聚体的生产

DOI:
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发表时间:
2004
影响因子:
3
通讯作者:
G. Platenburg
G. Platenburg
中科院分区:
生物学4区
文献类型:
--
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

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用于生物材料的重组胶原蛋白的大规模生产需要一种高效的表达系统来处理需要翻译后修饰的大的(>400 kD)多亚基蛋白。为了研究转基因动物的乳腺是否满足这些要求,产生了含有αS1-酪蛋白乳腺特异性启动子的转基因小鼠,该启动子可操作地连接到37 kb的人α1(I)前胶原结构基因和3‘侧翼区。转基因株系的建立频率为12%。在9个哺乳期转基因小鼠品系中,有6个品系的乳汁中检测到高水平的可溶性三螺旋同源三聚体[(α1)3]I型前胶原(高达8 mg/ml)。转基因的人前胶原链被有效地组装成一个三螺旋结构。尽管从未描述过任何牛奶蛋白的脯氨酸或赖氨酸羟化,但在这些翻译后修饰中检测到了前胶原。MIL中的前胶原是稳定的,降解很小。这些结果表明,乳腺能够表达一个大的前胶原基因结构,有效地将单个多肽链组装成一个稳定的三螺旋结构,并将完整的分子分泌到牛奶中。
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.
成骨不全症:克隆具有移码突变的 pro-alpha 2(I) 胶原蛋白基因。
DOI: --
发表时间: 1984
期刊: The Journal of biological chemistry
影响因子: --
作者:
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DOI: 10.1016/s0021-9258(18)47783-6
发表时间: 1987-11
期刊: The Journal of biological chemistry
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DOI: 10.1016/0076-6879(82)82058-2
发表时间: 1982
影响因子: --
作者:
E. J. Miller;S. Gay
通讯作者: E. J. Miller;S. Gay
DOI: 10.1126/science.8378772
发表时间: 1993-09-24
期刊: SCIENCE
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