Abstract
Gsdm is a newly found gene family, which is restricted in its expression to the gastrointestinal tract and the skin epithelium. As a main member of the Gsdma subfamily, Gsdma3 is expressed specifically in the hair follicle of mouse skin, but its function remains largely unclear. By hematoxylin and eosin staining, we showed that Gsdma3 gene mutation caused an abnormal catagen phase with unshortened length and unshrunk structure of the hair follicle, in which the development of catagen phase was inhibited. TUNEL staining further revealed that the apoptosis of the hair follicle was obviously decreased in mutant mice. Caspase-3 downregulation was also detected by immunofluorescence, Western blot and RT-PCR in the hair follicle of the mutant mice. After intradermal injection of Gsdma3 gene expression plasmid, apoptosis as well as Caspase-3 expression in the hair follicle of mutant mice was enhanced, and so the catagen retardation of Gsdma3-mutant mice was rescued. Our results confirmed that Gsdma3 gene mutation interfered with catagen formation during mouse hair follicle cycle and, by upregulation of Caspase-3 expression and promotion of apoptosis, Gsdma3 gene could play an essential role in normal catagen induction.
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Abbreviations
- DAB:
-
Diaminobenzidine
- GFP:
-
Green fluorescent protein
- GSDM:
-
Gasdermin
- HE:
-
Hematoxylin and eosin staining
- PBS:
-
Phosphate-buffered saline
- PCR:
-
Polymerase chain reaction
- PFA:
-
Paraformaldehyde
- POD:
-
Peroxidase
- PVDF:
-
Polyvinylidene difluoride
- RT:
-
Reverse transcription
- SDS:
-
Sodium dodecyl sulfate
- TBS:
-
TRIS-buffered saline
- Tm:
-
Temperature
- TUNEL:
-
Terminal dUTP nick end-labeling
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Acknowledgments
This study was supported by grants 30872270 from the National Nature Science Foundation of China and and CS TC, 2009AA5045 from Key Science and Technology Program of CQ.
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M. Lei and X. Gao have contributed equally to this work.
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Lei, M., Gao, X., Yang, L. et al. Gsdma3 gene is needed for the induction of apoptosis-driven catagen during mouse hair follicle cycle. Histochem Cell Biol 136, 335–343 (2011). https://doi.org/10.1007/s00418-011-0845-8
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DOI: https://doi.org/10.1007/s00418-011-0845-8