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骆驼(单峰驼)血细胞中的热休克反应及对高温的适应

Heat-shock response in camel (Camelus dromedarius) blood cells and adaptation to hyperthermia.

作者信息

Ulmasov H A, Karaev K K, Lyashko V N, Evgen'ev M B

机构信息

Institute of Physiology and Experimental Pathology of Arid Zone, Ashkhabad, Russia.

出版信息

Comp Biochem Physiol B. 1993 Dec;106(4):867-72. doi: 10.1016/0305-0491(93)90043-5.

DOI:10.1016/0305-0491(93)90043-5
PMID:8299349
Abstract
  1. We demonstrate the difference between the reactions of camel (Camelus dromedarius) lymphocytes and erythrocytes to heat-shock treatment. 2. Lymphocytes of this organism characteristically have a higher resistance of general protein synthesis to elevated temperature in comparison with human lymphocytes. 3. Camel lymphocytes exhibited strong induction of constitutively expressed 73 kDa heat-shock protein (hsp 73) after heat-shock but failed to synthesize an inducible member of the same family (hsp 72) at high temperatures. 4. Nucleated camel erythrocytes do not synthesize any heat-shock proteins after temperature elevation. 5. Western blot analysis, using polyclonal antibody for hsp 73, revealed high levels of this protein in camel lymphocytes and diminished, but significant, amounts of hsp 73 protein in the erythrocytes under normal physiological conditions. 6. The role of 73 kDa hsp in providing thermotolerance of camel blood cells is discussed.
摘要
  1. 我们展示了骆驼(单峰驼)淋巴细胞和红细胞对热休克处理反应的差异。2. 与人类淋巴细胞相比,这种生物的淋巴细胞通常对升高的温度具有更高的总体蛋白质合成抗性。3. 骆驼淋巴细胞在热休克后表现出组成型表达的73 kDa热休克蛋白(hsp 73)的强烈诱导,但在高温下未能合成同一家族的诱导型成员(hsp 72)。4. 有核骆驼红细胞在温度升高后不合成任何热休克蛋白。5. 使用针对hsp 73的多克隆抗体进行的蛋白质印迹分析显示,在正常生理条件下,骆驼淋巴细胞中该蛋白水平很高,而红细胞中hsp 73蛋白的量减少但仍很显著。6. 讨论了73 kDa hsp在提供骆驼血细胞耐热性中的作用。

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