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Updated: Jul 14, 2025

Genetic Engineering of Dictyostelium discoideum Cells Based on Selection and Growth on Bacteria

Genetic Engineering of Dictyostelium discoideum Cells Based on Selection and Growth on Bacteria

Published on: January 25, 2019

在dictyostelia中的soma进化过程中,迪加尼酸环酶的新兴作用

Yoshinori Kawabe¹, Qingyou Du¹, Takaaki B Narita^1,2

¹Molecular Cell and Developmental Biology, School of Life Sciences, University of Dundee, Dundee, DD15EH, UK.

BMC ecology and evolution

|October 6, 2023

概括

循环二GMP (c-di-GMP) 信号在社会虫中影响聚合和茎形成. 虽然c-di-GMP对于茎发育至关重要,但其他祖先因素也对这一过程有所贡献.

科学领域:

细胞和分子生物学细胞和分子生物学
发展生物学发展生物学
进化生物学进化生物学

背景情况:

循环二酸 (c-di-GMP) 是 prokaryotes 中的一个关键的第二信使,调节像生物膜形成这样的过程.
社会性虫,如Dictyostelium discoideum,通过横向基因转移获得了迪加尼酸环酶 (dgcA).
在Dictyostelium discoideum中,c-di-GMP信号诱导茎细胞分化,这是子分散的祖先细胞类型.

研究的目的:

为了研究c-di-GMP在Dictyostelia中茎细胞分化中的进化作用.
探索dgcA在Polysphondylium pallidum和Polysphondylium violaceum中的功能,这些物种来自Dictyostelia中的不同类别.
了解在Dictyostelia发育中的c-di-GMP信号传递的保存机制.

主要方法:

在Polysphondylium pallidum和Polysphondylium violaceum中对dgcA基因表达和功能的比较分析.
在P. pallidum和P. violaceum中生成dgcA无突变,以观察表型变化.
在P. violaceum dgcA-突变体中删除编码其他茎形成因子 (StlB,AmtC,PhyA) 的基因,以评估其贡献.

主要成果:

在聚合后,dgcA上调,并在P. pallidum和P. violaceum的茎区域表达.
dgcA无基因突变体表现出长长,薄的茎,子数量减少,聚合动态发生变化.
删除stlB,amtC或phyA基因并没有显著地拯救P. violaceum dgcA-突变的茎类表型.

结论:

c-di-GMP在聚合中起作用,其对子数的影响可能是间接的.
迪西奥斯泰利亚可能利用了一个未知的祖先因子与c-di-GMP一起用于茎诱导.
腺酸环酶A (AcaA) 的c-di-GMP激活机制似乎在Dictyostelia中得到保护.

关键词:

亚地尼酸环酶A 是一种亚地尼酸环酶.迪克托斯泰利德的社会阿米巴斯.迪瓜尼酸环酸酶的使用索马的演变索马的演变聚基化合成酶钢性B B 普罗利尔4-氧化酶是一种4-氧化酶.氨运输体 C 氨运输体 C

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