Multireceptor somatostatin peptide analog

Pasireotide

Pasireotide is a somatostatin analog developed as SOM230. In vitro studies characterized binding to several receptor subtypes. Its comparative interest lies in distinguishing breadth of recognition from the type of cellular response.

This is a research reference, not a product offered in the Asciende catalog. Published studies do not establish the identity, purity or availability of a commercial preparation.

What changed from the reference

Write the evaluated material’s complete name. A shared family organizes a search but does not establish identity or result equivalence.

Which modification distinguishes the analog: sequence, terminus, conjugate or formulation?
Does the study compare both entities using the same assay?
Do the data separate molecular behavior from presentation effects?

Find readings for this question

Mechanism described in the literature

Binding studies found SOM230 affinity for sst1, sst2, sst3 and sst5. This does not imply identical signaling at every receptor or equivalence to octreotide across all functional readouts.

Other names in the literature

Pasireotide
SOM230

Design based on subtypes

The 2002 investigation compared structural modifications to identify features associated with somatostatin receptor binding, then examined secretory responses in cultures and animal models. Recognizing several subtypes is a binding property; secretion measurements supply functional evidence in a particular system.

Phosphorylation and signaling do not always coincide

A 2010 study used phosphorylation-site-specific antibodies to compare pasireotide and octreotide at rat sst2A receptors. Cellular models showed distinct phosphorylation and beta-arrestin association patterns, even when certain conventional signaling readouts could appear similar.

Receptor species matters

The phosphorylation work specifically identified a rat receptor, a detail that must accompany the finding even in cultured cells. Distinguish receptor origin from host-cell origin. Multireceptor is not synonymous with superiority; the profile requires the measured variable and purpose of comparison.

Questions and answers

Does multireceptor mean identical responses across subtypes?

No. It describes recognition breadth; each subtype and functional readout requires evaluation.

Did the phosphorylation study use human receptor?

No. The 2010 reference examined rat sst2A, a relevant distinction for interpretation.