Adipotide

Adipotide, also known by its research designations FTPP (fat-targeting proapoptotic peptide) and prohibitin-targeting peptide 1, is an experimental peptidomimetic compound investigated for its potential to induce targeted destruction of the blood supply to adipose tissue.

Adipotide functions through a two-component molecular architecture designed for targeted apoptosis in specific cell types.

N-Terminal Targeting Domain

The N-terminal portion contains a peptide homing sequence with binding affinity for the prohibitin protein when it is expressed on cell surfaces. Prohibitin is a typically intracellular protein involved in mitochondrial biogenesis and cellular metabolism. Research has shown that prohibitin can also be present on the cell surface of certain cell types, including vascular endothelial cells in white adipose tissue.

C-Terminal Pro-Apoptotic Domain

The C-terminal portion of Adipotide contains a pro-apoptotic effector domain, D(KLAKLAK)2. This sequence is reported to function by disrupting mitochondrial membranes, leading to membrane permeabilization, release of cytochrome c, and activation of the intrinsic apoptosis pathway. The pro-apoptotic domain is reported to be effective primarily after internalization into a cell.

Cellular Mechanism

Upon binding of the homing domain to surface prohibitin on an endothelial cell, the peptide-protein complex is internalized. Once inside the cell, the pro-apoptotic domain can access mitochondria and exert its membrane-disrupting effects, leading to apoptosis of the endothelial cell.

In laboratory models, the death of multiple endothelial cells along adipose tissue blood vessels has been shown to compromise vessel integrity, leading to vascular regression and ischemia in the downstream adipocytes.

Observed Selectivity

Studies found that the selectivity of this mechanism was limited. Prohibitin was also observed on kidney vasculature endothelium. Binding and uptake of Adipotide by renal vascular endothelial cells was associated with kidney blood vessel damage and renal dysfunction in animal models.

Published nonclinical literature relevant to this material's molecular targets and experimental models is listed below for independent review. Findings involving other preparations or experimental systems should not be attributed to this research material.

This material is supplied solely for in vitro and other nonclinical laboratory research. It is not for human or veterinary use, consumption, administration, therapeutic use, or diagnostic use.

Laboratory Handling

Handle only in an appropriately equipped laboratory using applicable institutional procedures, personal protective equipment, and the storage conditions shown for the material. The purchaser is responsible for study design, handling controls, disposal, and regulatory compliance.

Research Limitations

Published observations involving other preparations, experimental systems, or study populations do not establish the identity, performance, or suitability of this research material for any particular experiment.