Immune gene discovery by expressed sequence tag analysis of hemocytes and hepatopancreas in the Pacific White Shrimp, Litopenaeus vannamei, and the Atlantic White Shrimp, L. setiferus.
A pilot program was undertaken in immune gene discovery in two sister species of litopenaeid shrimp, the Pacific white shrimp, Litopenaeus vannamei and the Atlantic white shrimp, L. setiferus. RNA from the hemocytes and hepatopancreas of single individuals from each species was recovered, 4 cDNA libraries (one from each tissue/species) were made by a PCR-based method and a total of approximately 2045 randomly selected clones were sequenced. A total of 268 expressed sequence tags (ESTs) were found that corresponded to 44 immune function genes. The most common immune-function ESTs (172) were antimicrobial peptides, which were restricted to the hemocyte libraries. Lectins were the largest group of immune-function ESTs found in the hepatopancreas. Analysis of these libraries indicates that EST approaches are effective for immune gene discovery in shrimp and that the diversity of these PCR-generated libraries would support full-scale EST collection.
Gross
P S
PS
Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA. grossp@musc.edu
Bartlett
T C
TC
Browdy
C L
CL
Chapman
R W
RW
Warr
G W
GW
D000818:Animals; D000890:Anti-Infective Agents; D001267:Atlantic Ocean; D004064:Digestive System; D010450:Endopeptidases / Q000235:genetics; D020224:Expressed Sequence Tags; D015723:Gene Library; D006360:Heat-Shock Proteins / Q000235:genetics; D006434:Hemocytes; D037102:Lectins / Q000235:genetics; D008969:Molecular Sequence Data; D010088:Oxidoreductases / Q000235:genetics; D010140:Pacific Ocean; D033561:Penaeidae / Q000235:genetics* / Q000276:immunology*; D011480:Protease Inhibitors; D013045:Species Specificity; D014018:Tissue Distribution
D000890:Anti-Infective Agents; D006360:Heat-Shock Proteins; D037102:Lectins; D011480:Protease Inhibitors; D010088:Oxidoreductases; D010450:Endopeptidases