Yan-lei Wu, Lei Jiang, Yoshifumi Hashimoto, Robert R. Granados and Guo-xun Li. Establishment, Growth kinetics, and Susceptibility to AcMNPV of Heat Tolerant Lepidopteran Cell Lines[J]. Virologica Sinica, 2011, 26(3): 198-205. doi: 10.1007/s12250-011-3177-x
Citation: Yan-lei Wu, Lei Jiang, Yoshifumi Hashimoto, Robert R. Granados, Guo-xun Li. Establishment, Growth kinetics, and Susceptibility to AcMNPV of Heat Tolerant Lepidopteran Cell Lines .VIROLOGICA SINICA, 2011, 26(3) : 198-205.  http://dx.doi.org/10.1007/s12250-011-3177-x

建立及其生长特性和对病毒敏感性的研究

cstr: 32224.14.s12250-011-3177-x
  • 通讯作者: 李国勋, gxli@qau.edu.cn
  • 收稿日期: 2010-12-07
    录用日期: 2011-03-30
  • 目前已从鳞翅目sf-9,sf-21和一些家蚕细胞获得多株耐热细胞系,他们在染色体核型,膜脂质组成,形态和生长特性与亲代细胞系有很大的区别。本文报道了其它昆虫种类耐热细胞系的开发,测定 了它们的生长特性和对病毒敏感性。利用通过逐渐分阶段的提高温度,经2个月的处理,成功的获得了耐热细胞系,分别命名为sf9-ht33, sf9-ht35, High5-ht33, High5-ht35, MG1-ht33, MG1-ht35。现已传代70次以上,获得稳定的细胞系。结果表明,耐热细胞系的群体倍增时间比亲代细胞的短1-4小时。细胞形状没有明显变化,而sf9-ht细胞变大,High5和MG1 ht细胞变小。当细胞系在28℃,33℃,35℃,37℃下感染苜蓿银纹夜蛾核型多角体病毒时,芽殖病毒和多角体的产量在相应的细胞系中有最适宜的温度。

Establishment, Growth kinetics, and Susceptibility to AcMNPV of Heat Tolerant Lepidopteran Cell Lines

  • Corresponding author: Guo-xun Li, gxli@qau.edu.cn
  • Received Date: 07 December 2010
    Accepted Date: 30 March 2011

    Fund Project: Chinese National Science Foundation Project 30771451Boyce Thompson Institute for Plant Research Project BTI-QAU 1-23-2007Chinese National Basic Research Program (973) 2009CB118900

  • Lepidopteran heat-tolerant (ht) cell lines have been obtained with sf-9, sf-21 and several Bombyx cells. They have a distinct karyotype, membrane lipid composition, morphology and growth kinetics from the parental cell lines. In this paper, we report the development of ht cell lines from other insect species and examination of their growth characteristics and virus susceptibility. Adaptation of cell lines sf-9, BTI-TN-5B1-4 (High5) and BTI-TN-MG1 (MG1) to 33℃ and 35℃ was carried out by shifting the culture temperature between 28℃ and higher temperatures by a gradual stepwise increase in temperature. The process of adaption to a higher culture temperature was accomplished over a period of 2 months. The cell lines with the temperature adaption were designated as sf9-ht33, sf9-ht35, High5-ht33, High5-ht35, MG1-ht33, MG1-ht35. These cell lines have been subcultured over 70 passages. Adaption to high temperatures was confirmed by a constant population doubling time with individual cell lines. The population doubling time of heat adapted cell lines were 1-4 h less than these of parental cell lines. Cell shapes did not show obvious change, however, the cell size of sf9-ht cells was enlarged and those of High5 and MG1 ht cells were reduced after heat adaption. When the cell lines were infected with Autographa californica nuclear polyhedrosis virus (AcMNPV) at 28℃, 33℃, 35℃ and 37℃, production of budded virus and occlusion bodies in each cell line was optimum at its own adapted temperature.

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    Establishment, Growth kinetics, and Susceptibility to AcMNPV of Heat Tolerant Lepidopteran Cell Lines

      Corresponding author: Guo-xun Li, gxli@qau.edu.cn
    • 1. The Center for Advanced Invertebrate Cell Engineering Collaboration with BTI USA, Qingdao Agricultural University, Qingdao 266109, China
    • 2. Boyce Thompson Institute for Plant Research at Cornell University, Ithaca, NY 14853, USA
    Fund Project:  Chinese National Science Foundation Project 30771451Boyce Thompson Institute for Plant Research Project BTI-QAU 1-23-2007Chinese National Basic Research Program (973) 2009CB118900

    Abstract: Lepidopteran heat-tolerant (ht) cell lines have been obtained with sf-9, sf-21 and several Bombyx cells. They have a distinct karyotype, membrane lipid composition, morphology and growth kinetics from the parental cell lines. In this paper, we report the development of ht cell lines from other insect species and examination of their growth characteristics and virus susceptibility. Adaptation of cell lines sf-9, BTI-TN-5B1-4 (High5) and BTI-TN-MG1 (MG1) to 33℃ and 35℃ was carried out by shifting the culture temperature between 28℃ and higher temperatures by a gradual stepwise increase in temperature. The process of adaption to a higher culture temperature was accomplished over a period of 2 months. The cell lines with the temperature adaption were designated as sf9-ht33, sf9-ht35, High5-ht33, High5-ht35, MG1-ht33, MG1-ht35. These cell lines have been subcultured over 70 passages. Adaption to high temperatures was confirmed by a constant population doubling time with individual cell lines. The population doubling time of heat adapted cell lines were 1-4 h less than these of parental cell lines. Cell shapes did not show obvious change, however, the cell size of sf9-ht cells was enlarged and those of High5 and MG1 ht cells were reduced after heat adaption. When the cell lines were infected with Autographa californica nuclear polyhedrosis virus (AcMNPV) at 28℃, 33℃, 35℃ and 37℃, production of budded virus and occlusion bodies in each cell line was optimum at its own adapted temperature.