Dynamic transcriptional changes in benzo[a]pyrene exposed Hydra

Title
Dynamic transcriptional changes in benzo[a]pyrene exposed Hydra
Author(s)
이애경; 원효경; 김정희; 우선옥; 염승식
KIOST Author(s)
Lee, Na Yun(이나윤)Yum, Seungshic(염승식)
Publication Year
2014-10-29
Abstract
Transcriptional changes induced by Benzo[a]pyrene (BaP) acute toxicity in Hydra magnipapillata were evaluated. The median lethal concentrations of the animals (LC50) were determined to be 78.5 mg/L, 53.6 mg/L and 28.9 mg/L after exposure to BaP for 24 h, 48 h and 72 h, respectively. Morphological responses of hydra polyps to 50 mg/L of BaP by exposure time were observed. Differential gene expression profiling of the hydra polyp was performed with a cDNA microarray after exposure to 500 µ g/L of BaP (about 1/100 of 48-h LC50) for 4 h, 12 h, 24 h, and 48 h to understand the changes in the acute toxicity by exposure time. The gene expression levels of molecular chaperones, antioxidative enzyme were altered at the early phase of the exposure. Transcription of the genes related to development, tumorigenesis, apoptosis, and necrosis were affected by the 4 h BaP exposure group. After 12 h exposure, developmental process, inflammatory process, calcium metabolism, innate immune and sodium-potassium channel related metabolism in hydra polyp seemed to be affected since the transcription of the genes which related to those biological process were induced or repressed by BaP exposure. Neurotransmission might be suppressed tumorigenesis and DNA damage might be induced in 24 h BaP exposed hydra group. Finally, carcinogenesis, DNA damage and protein degradation process seemed to be induced after 48 h exposure, on the other han BaP for 24 h, 48 h and 72 h, respectively. Morphological responses of hydra polyps to 50 mg/L of BaP by exposure time were observed. Differential gene expression profiling of the hydra polyp was performed with a cDNA microarray after exposure to 500 µ g/L of BaP (about 1/100 of 48-h LC50) for 4 h, 12 h, 24 h, and 48 h to understand the changes in the acute toxicity by exposure time. The gene expression levels of molecular chaperones, antioxidative enzyme were altered at the early phase of the exposure. Transcription of the genes related to development, tumorigenesis, apoptosis, and necrosis were affected by the 4 h BaP exposure group. After 12 h exposure, developmental process, inflammatory process, calcium metabolism, innate immune and sodium-potassium channel related metabolism in hydra polyp seemed to be affected since the transcription of the genes which related to those biological process were induced or repressed by BaP exposure. Neurotransmission might be suppressed tumorigenesis and DNA damage might be induced in 24 h BaP exposed hydra group. Finally, carcinogenesis, DNA damage and protein degradation process seemed to be induced after 48 h exposure, on the other han
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25885
Bibliographic Citation
대한환경위해성보건과학회 학술대회, pp.s35 p3, 2014
Publisher
대한환경위해성보건과학회
Type
Conference
Language
English
Publisher
대한환경위해성보건과학회
Related Researcher
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse