Characterization and expression of a new subfamily member of penaeidin antimicrobial peptides (penaeidin 5) from Fenneropenaeus chinensis

2007 ◽  
Vol 44 (7) ◽  
pp. 1535-1543 ◽  
Author(s):  
Cui-Jie Kang ◽  
Jian-Feng Xue ◽  
Ning Liu ◽  
Xiao-Fan Zhao ◽  
Jin-Xing Wang
Keyword(s):  
Antimicrobial Peptides ◽  
Fenneropenaeus Chinensis ◽  
Subfamily Member

scholarly journals A Lymphoid Organ Specific Anti-Lipopolysaccharide Factor from Litopenaeus vannamei Exhibits Strong Antimicrobial Activities

Marine Drugs ◽  
2021 ◽  
Vol 19 (5) ◽  
pp. 250
Author(s):  
Mingzhe Sun ◽  
Shihao Li ◽  
Xinjia Lv ◽  
Jianhai Xiang ◽  
Yuanan Lu ◽  
...  
Keyword(s):  
Antimicrobial Peptides ◽  
Litopenaeus Vannamei ◽  
Fenneropenaeus Chinensis ◽  
Antibacterial Activities ◽  
Antimicrobial Activities ◽  
Lymphoid Organ ◽  
Shrimp Species ◽  
New Findings ◽  
New Research

Different shrimp species are known to possess apparent distinct resistance to different pathogens in aquaculture. However, the molecular mechanism underlying this finding still remains unknown. One kind of important antimicrobial peptides, anti-lipopolysaccharide factors (ALF), exhibit broad-spectrum antimicrobial activities. Here, we reported a newly identified ALF from the shrimp Litopenaeus vannamei and compared the immune function with its counterpart in the shrimp Fenneropenaeus chinensis. The ALF, designated as LvALF8, was specifically expressed in the lymphoid organ of L. vannamei. The expression level of LvALF8 was apparently changed after white spot syndrome virus (WSSV) or Vibrio parahaemolyticus challenges. The synthetic LBD peptide of LvALF8 (LvALF8-LBD) showed strong antibacterial activities against most tested Gram-negative and Gram-positive bacteria. LvALF8-LBD could also inhibit the in vivo propagation of WSSV similar as FcALF8-LBD, the LBD of LvALF8 counterpart in F. chinensis. However, LvALF8-LBD and FcALF8-LBD exhibited apparently different antibacterial activity against V. parahaemolyticus, the main pathogen causing acute hepatopancreatic necrosis disease (AHPND) of affected shrimp. A structural analysis showed that the positive net charge and amphipathicity characteristics of LvALF8-LBD peptide were speculated as two important components for its enhanced antimicrobial activity compared to those of FcALF8-LBD. These new findings may not only provide some evidence to explain the distinct disease resistance among different shrimp species, but also lay out new research ground for the testing and development of LBD-originated antimicrobial peptides to control of shrimp diseases.

Antimicrobial peptides in COPD

Pneumologie ◽  
2009 ◽  
Vol 63 (S 01) ◽  
Author(s):  
G Günther ◽  
E Andresen ◽  
J Bullwinkel ◽  
C Lange ◽  
H Heine
Keyword(s):  
Antimicrobial Peptides
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