Peptides in insect oogenesis
نویسندگان
چکیده
منابع مشابه
Insect Venom Peptides
The insects of the order Hymenoptera (bees, wasps, and ants) are classified in two groups, based on their life history: social and solitary. The venoms of the social Hymenoptera evolved to be used as defensive tools to protect the colonies of these insects from the attacks of predators. Generally they do not cause lethal effects but cause mainly inflammatory and/or immunological reactions in th...
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Francisella tularensis causes the zoonotic disease tularemia. Arthropod vectors are important transmission routes for the disease, although it is not known how Francisella survives the efficient arthropod immune response. Here, we used Drosophila melanogaster as a model host for Francisella infections and investigated whether the bacteria are resistant to insect humoral immune responses, in par...
متن کاملAccessory nuclei in insect oogenesis: in search of the function of enigmatic organelles.
This review compiles present knowledge of the structure and molecular composition of the enigmatic cytoplasmic organelles called accessory nuclei. Most typically, they are found in the perinuclear cytoplasm in oocytes of insects and several other invertebrates. Accessory nuclei originate by budding of the oocyte nucleus (germinal vesicle) and are surrounded by an envelope identical to the nucle...
متن کاملOrigin and spatial distribution of maternal messenger RNA during oogenesis of an insect, Oncopeltus fasciatus.
In order to investigate the origin and spatial distribution of maternal mRNA during oogenesis, in situ hybridization with [3H]-poly(U) was utilized for the detection of poly(A)-containing RNA [poly(A)+RNA] in histological sections of Oncopeltus fasciatus ovaries. In the germarium poly(A)+RNA was found to accumulate in the trophocyte cytoplasm concomitant with the maturation of these cells. Poly...
متن کاملThe insect immune protein hemolin is expressed during oogenesis and embryogenesis
Hemolin is the most abundant bacteria-induced proteins in Hyalophora cecropia hemolymph. Its structural features, both at the protein and gene level, ascribe this molecule to the immunoglobulin gene superfamily (IgSF) with particular homology to neural cell adhesion molecules. An increasing number of evidence suggest a role in immune recognition and in cell adhesion events. Hemolin is also deve...
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ژورنال
عنوان ژورنال: Current Opinion in Insect Science
سال: 2019
ISSN: 2214-5745
DOI: 10.1016/j.cois.2018.08.007