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Published on: August 4, 2016
Expression of KIT receptor tyrosine kinase protein in normal human skin: preliminary observations
1Pathology Department, School of Medicine, Assuit University, Assuit, Egypt. mrh17@swissinfo.org
Abstract:
KIT proto-oncogene is a receptor tyrosine kinase critical for signal transduction in several cell types. An understanding of KIT distribution in normal skin may reveal new insights into its implication in cutaneous biology and its associated disease states. This study examines expression patterns of KIT protein in normal human skin. KIT protein expression was examined in 50 specimens of normal human skin using specific antibodies (CD117) and immunoperoxidase staining methods. KIT protein expression was seen in keratinocytes (stratum basale), melanocytes, mast cells, and in both sebaceous and sweat glands. In contrast, KIT protein expression was absent in stratum spinosum, stratum granulosum, stratum corneum, blood vessels and arrector pili muscle. Thus, the expression of KIT protein in normal human skin suggests its possible role in regulation of cutaneous development and function.
Insights
KIT proto-oncogene (CD117) is expressed in normal human skin, found in keratinocytes, melanocytes, mast cells, and glands. This finding offers insights into skin development and disease.
Area of Science:
- Dermatology
- Molecular Biology
- Cell Biology
Background:
- The KIT proto-oncogene encodes a receptor tyrosine kinase vital for cellular signal transduction.
- Understanding KIT distribution in normal skin is crucial for elucidating its role in cutaneous biology and disease pathogenesis.
Purpose of the Study:
- To investigate and map the expression patterns of KIT protein in normal human skin.
- To identify specific skin cell types and structures that express KIT.
Main Methods:
- Utilized immunoperoxidase staining with specific CD117 antibodies.
- Analyzed 50 specimens of normal human skin to determine KIT protein localization.
Main Results:
- KIT protein expression was detected in keratinocytes (stratum basale), melanocytes, mast cells, sebaceous glands, and sweat glands.
- KIT protein expression was notably absent in the stratum spinosum, stratum granulosum, stratum corneum, blood vessels, and arrector pili muscle.
Conclusions:
- The widespread expression of KIT protein in various normal skin components suggests its significant role in regulating cutaneous development and function.
- These findings provide a foundational understanding for further research into KIT's involvement in skin conditions.
