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Myosin 10 is involved in murine pigmentation
Kifayathullah Liakath-Ali1, Valerie E Vancollie2, Inês Sequeira1
1Centre for Stem Cells & Regenerative Medicine, King's College London, London, UK.
Experimental Dermatology
|March 7, 2018
Summary
Myosin-10 (Myo10) plays a crucial role in mammalian skin pigmentation. Disruption of Myo10 in mice results in white patches and syndactyly, indicating its importance in melanocyte development.
Area of Science:
- Molecular Biology
- Developmental Biology
- Genetics
Background:
- Myosins are essential molecular motors involved in cellular functions.
- Their roles in mammalian skin physiology, particularly pigmentation, remain largely unexplored.
- Previous studies have implicated other myosins (Myo5a, Myo7a) in cellular processes.
Purpose of the Study:
- To investigate the function of Myosin-10 (Myo10) in mammalian skin pigmentation.
- To characterize the phenotypic consequences of Myo10 disruption in mice.
- To elucidate the role of Myo10 in melanocyte development and distribution within the skin.
Main Methods:
- Utilizing the Sanger Institute Mouse Genetics Project to study mice with a disrupted Myo10 allele.
- Phenotypic analysis of adult mice homozygous for the Myo10 mutation on a C57BL/6N background.
- Examination of tail epidermal wholemounts to assess melanocyte presence in hair follicles and epidermis.
Main Results:
- Homozygous Myo10-disrupted mice exhibited significant white patches on abdominal and dorsal surfaces.
- Syndactyly (fusion of digits) was observed in both forepaws and hind paws.
- Tail epidermal wholemounts revealed a complete absence of melanocytes in hair follicles and interfollicular epidermis.
Conclusions:
- Myosin-10 (Myo10) is critically involved in murine skin pigmentation.
- Myo10 disruption leads to a distinct depigmentation phenotype and limb abnormalities.
- The findings highlight Myo10's essential role in melanocyte development and/or migration in mammalian skin.
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