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Prolylcarboxypeptidase (PRCP) as a new target for obesity treatment

B Shariat-Madar1, D Kolte, A Verlangieri

  • 1College of Literature, Science, and the Arts, University of Michigan, Ann Arbor MI, USA.

Diabetes, Metabolic Syndrome and Obesity : Targets and Therapy
|August 10, 2010
PubMed

Insights

Prolylcarboxypeptidase (PRCP) deficiency in mice increases appetite-suppressing alpha-melanocyte-stimulating hormone (alpha-MSH), leading to weight loss. PRCP inhibitors may offer a new obesity treatment targeting this pathway.

Area of Science:

  • Neuroscience
  • Endocrinology
  • Metabolic Research

Background:

  • The hypothalamic pro-opiomelanocortin (POMC) system regulates food intake and body weight.
  • Alpha-melanocyte-stimulating hormone (alpha-MSH) is a key peptide within the POMC system that suppresses appetite.
  • The enzymatic regulation of alpha-MSH in the brain is not fully understood.

Purpose of the Study:

  • To investigate the role of prolylcarboxypeptidase (PRCP) in regulating alpha-MSH levels and body weight.
  • To explore the potential of PRCP as a therapeutic target for obesity and related disorders.

Main Methods:

  • Observation of PRCP-deficient mice exhibiting altered feeding behavior and body weight.
  • Measurement of alpha-MSH levels in PRCP-deficient mice.
  • Evaluation of the implications of PRCP's role in alpha-MSH regulation.

Main Results:

  • Mice deficient in PRCP showed elevated levels of alpha-MSH.
  • Elevated alpha-MSH in PRCP-deficient mice resulted in decreased food intake and significant weight loss.
  • These findings identify PRCP as an endogenous inactivator of alpha-MSH and an appetite stimulant.

Conclusions:

  • PRCP plays a crucial role in the inactivation of alpha-MSH within the brain.
  • Targeting PRCP could represent a novel therapeutic strategy for managing obesity and metabolic dysfunction.
  • Further research into PRCP's function in fuel homeostasis is warranted to fully elucidate its therapeutic potential.

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