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Related Experiment Videos

Phospholipase Cdelta1 is required for skin stem cell lineage commitment.

Yoshikazu Nakamura1, Kiyoko Fukami, Haiyan Yu

  • 1Department of Biochemistry, The Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan.

The EMBO Journal
|June 14, 2003
PubMed
Summary

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Phosphoinositide-specific phospholipase C (PLC) deficiency causes hair loss and skin abnormalities in mice. PLCdelta(1) is crucial for proper skin stem cell function and hair follicle development.

Area of Science:

  • Dermatology
  • Molecular Biology
  • Biochemistry

Background:

  • Phosphoinositide-specific phospholipase C (PLC) is vital for cellular signaling.
  • PLC enzymes regulate phosphoinositide turnover, impacting various physiological processes.
  • The specific role of PLCdelta(1) in skin biology and hair development remains largely unexplored.

Purpose of the Study:

  • To investigate the physiological role of PLCdelta(1) in mouse skin and hair development.
  • To elucidate the downstream signaling pathways affected by PLCdelta(1) deficiency in keratinocytes.

Main Methods:

  • Generation and analysis of PLCdelta(1)-deficient mice.
  • Histological examination of skin and hair follicles.
  • Assessment of calcium and protein kinase C signaling pathways in skin tissues.

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Main Results:

  • PLCdelta(1)-deficient mice exhibited progressive hair loss and epidermal hyperplasia.
  • Impaired calcium elevation and protein kinase C activation were observed in PLCdelta(1)-deficient skin.
  • Abnormal hair canal occlusion, cyst formation, sebaceous gland hyperplasia, and spontaneous skin tumors were noted.

Conclusions:

  • PLCdelta(1) is essential for normal hair cycle progression and epidermal integrity.
  • The enzyme plays a critical role in regulating downstream calcium and PKC signaling in skin.
  • PLCdelta(1) is required for proper skin stem cell lineage commitment and tumor suppression.