Role of Neuropeptide B/W Signaling in Modulating Intracellular Calcium in Human Skin Fibroblasts

Area of Science:

• Dermatology
• Cell Biology
• Endocrinology

Background:

• The neuropeptide B/W (NPB/W) signaling system regulates physiological processes and is present in human skin.
• Its specific functions in skin, particularly in dermal fibroblasts, require further investigation.

Purpose of the Study:

• To identify the expression of neuropeptides B/W receptor 1 (NPBWR1) and neuropeptides B/W receptor 2 (NPBWR2) in human dermal fibroblasts.
• To investigate the role of these receptors in fibroblast proliferation and calcium signaling.

Main Methods:

• Quantitative PCR (qPCR), western blot, and immunofluorescence were used to detect NPBWR1 and NPBWR2 mRNA and protein.
• Synthesized ligands, hNPB (25-53) and hNPW (33-62), were used to assess effects on cell proliferation and intracellular calcium levels.

Main Results:

• Human neuropeptide W (hNPW) (33-62) demonstrated an anti-proliferative effect on human dermal fibroblasts.
• A concentration of 0.1 μmol/L hNPW significantly decreased intracellular calcium levels (p < 0.05).
• Human neuropeptide B (hNPB) (25-53) did not affect fibroblast proliferation.

Conclusions:

• The NPB/W signaling system may be involved in skin pathologies linked to impaired calcium handling, such as fibrosis.
• Findings suggest potential therapeutic strategies for skin conditions and wound healing.