Aedes aegypti midgut early trypsin is post-transcriptionally regulated by blood feeding
Article
Noriega, FG, Pennington, JE, Barillas-Mury, C et al. (1996). Aedes aegypti midgut early trypsin is post-transcriptionally regulated by blood feeding
. INSECT MOLECULAR BIOLOGY, 5(1), 25-29. 10.1111/j.1365-2583.1996.tb00037.x
Noriega, FG, Pennington, JE, Barillas-Mury, C et al. (1996). Aedes aegypti midgut early trypsin is post-transcriptionally regulated by blood feeding
. INSECT MOLECULAR BIOLOGY, 5(1), 25-29. 10.1111/j.1365-2583.1996.tb00037.x
Early trypsin is a female-specific protease present in the Aedes aegypti midgut during the first hours after ingestion of a blood meal. Early trypsin gene expression was studied by Northern blot analysis. The early trypsin mRNA, absent in larvae, pupae and newly emerged females, reaches detectable levels at 24 h post-emergence and attains a maximum level at an adult age of 4-7 days. After the first week there is a decrease in the steady-state level of the transcript, but it remains readily detectable for up to a month after emergence. Despite the high levels of early trypsin mRNA present in the midgut of the unfed female, translation of the early trypsin mRNA occurs only after a blood or a protein meal. Early trypsin mRNA levels rapidly decrease during the first 24 h after feeding, but the steady-state level of the transcript rises again at the end of the blood digestion cycle (60 h), as the mosquito prepares for a second blood meal.
