Extracellular vesicles derived from Acholeplasma laidlawii PG8.

Extracellular vesicles derived from Acholeplasma laidlawii PG8.
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DOI:
10.1100/tsw.2011.109
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发表时间:
2011-05-26
影响因子:
--
通讯作者:
Trushin MV
Trushin MV
中科院分区:
其他
文献类型:
--
作者:
Chernov VM;Chernova OA;Mouzykantov AA;Efimova IR;Shaymardanova GF;Medvedeva ES;Trushin MV

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细胞外囊泡的产生被认为是细菌中普遍存在的过程,但是关于柔膜菌中这种过程的数据是缺失的。我们报告了从莱氏无胆甾原体PG 8(普遍存在的支原体;细胞培养的主要污染物)的上清液中分离超微结构-细胞外囊泡。从大小、形态和超微结构等方面考虑,A. Laidlawii PG 8与革兰氏阳性菌和革兰氏阴性菌的膜囊泡相似。我们证明了A. Laidlawii PG 8囊泡含有遗传物质和蛋白质,对人外周血淋巴细胞具有诱变性。我们发现另一种支原体鸡毒支原体S6也产生类似的结构,这表明囊泡脱落可能是柔膜菌门中的常见现象。我们发现,应力条件的作用导致支原体超微结构的密集形成。囊泡形成在支原体中的作用仍有待研究。
Extracellular vesicle production is believed to be a ubiquitous process in bacteria, but the data on such a process in Mollicutes are absent. We report the isolation of ultramicroforms – extracellular vesicles from supernatants of Acholeplasma laidlawii PG8 (ubiquitous mycoplasma; the main contaminant of cell culture). Considering sizes, morphology, and ultrastructural organization, the ultramicroforms of A. laidlawii PG8 are similar to membrane vesicles of Gram-positive and Gram-negative bacteria. We demonstrate that A. laidlawii PG8 vesicles contain genetic material and proteins, and are mutagenic to lymphocytes of human peripheral blood. We show that Mycoplasma gallisepticum S6, the other mycoplasma, also produce similar structures, which suggests that shedding of the vesicles might be the common phenomenon in Mollicutes. We found that the action of stress conditions results in the intensive formation of ultramicroforms in mycoplasmas. The role of vesicular formation in mycoplasmas remains to be studied.
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