Hormonal regulation of the humoral innate immune response in Drosophila melanogaster.
Hormonal regulation of the humoral innate immune response in Drosophila melanogaster.
复制标题
DOI:
10.1242/jeb.014878
复制
发表时间:
2008-08
期刊:
影响因子:
--
通讯作者:
Silverman N
中科院分区:
文献类型:
--
作者:
Flatt T;Heyland A;Rus F;Porpiglia E;Sherlock C;Yamamoto R;Garbuzov A;Palli SR;Tatar M;Silverman N
Juvenile hormone (JH) and 20-hydroxy-ecdysone (20E) are highly versatile hormones, coordinating development, growth, reproduction, and aging in insects. Pulses of 20E provide key signals for initiating developmental and physiological transitions, while JH promotes or inhibits these signals in a stage-specific manner. Previous evidence suggests that JH and 20E might modulate innate immunity, but whether and how these hormones interact to regulate the immune response remains unclear. Here we show that JH and 20E have antagonistic effects on the induction of antimicrobial peptide (AMP) genes in Drosophila melanogaster. 20E pretreatment of S2* cells promoted the robust induction of AMP genes, following immune stimulation. On the other hand, JH III, and its synthetic analogs (JHa) methoprene and pyriproxyfen, strongly interfered with this 20E-dependent immune potentiation, although these hormones did not inhibit other 20E-induced cellular changes. Similarly, in vivo analyses in adult flies confirmed that JH is a hormonal immuno-suppressor. RNA silencing of either partner of the ecdysone receptor heterodimer (EcR or Usp) in S2* cells prevented the 20E-induced immune potentiation. In contrast, silencing methoprene-tolerant (Met), a candidate JH receptor, did not impair immuno-suppression by JH III and JHa, indicating that in this context MET is not a necessary JH receptor. Our results suggest that 20E and JH play major roles in the regulation of gene expression in response to immune challenge.
登录
查看更多内容
影响因子:
3.3
作者:
Flatt, Thomas;Kawecki, Tadeusz J.
通讯作者:
Kawecki, Tadeusz J.
影响因子:
5.8
作者:
Al-Shahrour, F;Díaz-Uriarte, R;Dopazo, J
通讯作者:
Dopazo, J
影响因子:
11.4
作者:
Ferrandon, D;Jung, AC;Hoffmann, JA
通讯作者:
Hoffmann, JA
DOI:
10.1111/j.1432-1033.1994.tb18730.x
发表时间:
1994-04-01
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
作者:
DIMARCQ, JL;HOFFMANN, D;HOFFMANN, JA
通讯作者:
HOFFMANN, JA
影响因子:
4.6
作者:
Gershman, Boris;Puig, Oscar;Garofalo, Robert S.
通讯作者:
Garofalo, Robert S.