Prepro-tachykinin gene expression in the brain of the honeybee Apis mellifera.
We have recently identified a tachykinin-related peptide (AmTRP) from the mushroom bodies (MBs) of the brain of the honeybee Apis mellifera L. by using direct matrix-assisted laser desorption/ionization with time-of-flight mass spectometry and have isolated its cDNA. Here, we have examined prepro-AmTRP gene expression in the honeybee brain by using in situ hybridization. The prepro-AmTRP gene is expressed predominantly in the MBs and in some neurons located in the optic and antennal lobes. cDNA microarray studies have revealed that AmTRP expression is enriched in the MBs compared with other brain regions. There is no difference in AmTRP-expressing cells among worker, queen, and drone brains, suggesting that the cell types that express the prepro-AmTRP gene do not change according to division of labor, sex, or caste. The unique expression pattern of the prepro-AmTRP gene suggests that AmTRPs function as neuromodulators in the MBs of the honeybee brain.
Department of Biological Sciences, Graduate School of Science, University of Tokyo, Bunkyo-ku, 113-0033 Tokyo, Japan.
Hideaki
H
Takeuchi
Akikazu
A
Yasuda
Yoshimi
Y
Yasuda-Kamatani
Miyuki
M
Sawata
Yuko
Y
Matsuo
Azusa
A
Kato
Atsumi
A
Tsujimoto
Terumi
T
Nakajima
Takeo
T
Kubo
D000818:Animals; D001516:Bees / Q000235:genetics*; D001921:Brain / Q000378:metabolism; D015870:Gene Expression / Q000235:genetics; D017403:In Situ Hybridization; D024521:Mushroom Bodies / Q000378:metabolism*; D020411:Oligonucleotide Array Sequence Analysis; D015320:Tachykinins / Q000235:genetics / Q000378:metabolism*
D015320:Tachykinins