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Adenoviral Gene Therapy for Diabetic Keratopathy: Effects on Wound Healing and Stem Cell Marker Expression in Human Organ-cultured Corneas and Limbal Epithelial Cells
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Lack of keratinocyte growth factor retards angiogenesis in cutaneous wounds

C Peng1, Q He, C Luo

  • 1Department of Burns and Plastic Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, China.

The Journal of International Medical Research
|June 16, 2011
PubMed

Insights

Keratinocyte growth factor (KGF) is crucial for wound healing, regulating angiogenesis and cell proliferation. While KGF knockout mice showed no difference in wound closure, they exhibited reduced angiogenesis and VEGF levels.

Area of Science:

  • Wound healing research
  • Molecular biology
  • Dermatology

Background:

  • Keratinocyte growth factor (KGF) is a key regulator of epithelial cell growth and differentiation.
  • Understanding KGF's role in wound healing is essential for developing new therapeutic strategies.

Purpose of the Study:

  • To investigate the specific effects of KGF on the processes involved in wound healing.
  • To determine the impact of KGF deficiency on keratinocyte proliferation, angiogenesis, and vascular endothelial growth factor (VEGF) expression during wound repair.

Main Methods:

  • Creation of full-thickness excisional dorsal wounds in KGF knockout (KGF KO) and wild-type (WT) mice.
  • Measurement of wound closure rates.
  • Immunohistochemical analysis for Ki67 (proliferation) and CD31 (angiogenesis).
  • Real-time reverse transcription-polymerase chain reaction (RT-PCR) for VEGF mRNA levels.

Main Results:

  • No significant difference in the overall rate of wound closure was observed between KGF KO and WT mice.
  • KGF KO mice exhibited significantly decreased keratinocyte proliferation compared to WT mice.
  • Reduced angiogenesis and lower VEGF mRNA levels were detected in KGF KO mice.
  • These findings indicate an impaired wound healing microenvironment in the absence of KGF.

Conclusions:

  • KGF plays a critical role in regulating keratinocyte proliferation and angiogenesis during wound healing.
  • KGF influences VEGF gene expression, impacting the formation of new blood vessels.
  • Despite no impact on closure rate, KGF is vital for the molecular and cellular processes underlying effective wound repair.

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