Cholecystokinin-Like Peptide (DSK) in Drosophila, Not Only for Satiety Signaling

نویسندگان

  • Dick R. Nässel
  • Michael J. Williams
چکیده

Cholecystokinin (CCK) signaling appears well conserved over evolution. In Drosophila, the CCK-like sulfakinins (DSKs) regulate aspects of gut function, satiety and food ingestion, hyperactivity and aggression, as well as escape-related locomotion and synaptic plasticity during neuromuscular junction development. Activity in the DSK-producing neurons is regulated by octopamine. We discuss mechanisms behind CCK function in satiety, aggression, and locomotion in some detail and highlight similarities to mammalian CCK signaling.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Insulin-Producing Cells in the Drosophila Brain also Express Satiety-Inducing Cholecystokinin-Like Peptide, Drosulfakinin

Regulation of meal size and assessing the nutritional value of food are two important aspects of feeding behavior. The mechanisms that regulate these two aspects have not been fully elucidated in Drosophila. Diminished signaling with insulin-like peptides Drosophila insulin-like peptides (DILPs) affects food intake in flies, but it is not clear what signal(s) mediates satiety. Here we investiga...

متن کامل

A neuropeptide signaling pathway regulates synaptic growth in Drosophila

Neuropeptide signaling is integral to many aspects of neural communication, particularly modulation of membrane excitability and synaptic transmission. However, neuropeptides have not been clearly implicated in synaptic growth and development. Here, we demonstrate that cholecystokinin-like receptor (CCKLR) and drosulfakinin (DSK), its predicted ligand, are strong positive growth regulators of t...

متن کامل

Isolation and expression of the Drosophila drosulfakinin neural peptide gene product, DSK-I.

The Drosophila drosulfakinin (dsk) gene encodes the cholecystokinin homologues drosulfakinin-I (DSK-I) and drosulfakinin-II (DSK-II). The naturally occurring DSKI peptide was isolated from an extract of adult flies and its sequence determined by automated Edman degradation and sequence-specific radioimmunoassay. The dsk cDNA is expressed during the larval, pupal, and adult stages of development...

متن کامل

DIGESTIVO Interactions between gastric emptying and satiety, withspecial reference to glucagon-like peptide-1

The slowing of gastric emptying is an important mechanism for the satiating effect of gut peptide signaling. After food intake, cholecystokinin (CCK), as well as glucagon-like peptide-1 (GLP-1) and glucagon-like peptide-2 (GLP-2), are released from the gastrointestinal tract to mediate satiety. In humans, CCK and the GLP-1 have been found to cause satiety in both normal and obese subjects. This...

متن کامل

Peptide YY3-36 inhibits food intake in mice through a melanocortin-4 receptor-independent mechanism.

Peptide YY(3-36) (PYY(3-36)), a peptide released postprandially by the gut, has been demonstrated to inhibit food intake. Little is known about the mechanism by which PYY(3-36) inhibits food intake, although the peptide has been shown to increase hypothalamic proopiomelanocortin (POMC) mRNA in vivo and to activate POMC neurons in an electrophysiological slice preparation. Understanding the phys...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره 5  شماره 

صفحات  -

تاریخ انتشار 2014