目的：检测自噬基因Beclin 1和MAP1LC3在皮肤黑色素瘤中的表达,探讨自噬与黑色素瘤的关系。方法采用免疫组化SP法检测85例标本(包括正常表皮、表皮痣、放射性生长阶段的黑色素瘤、垂直生长阶段的黑色素瘤和转移性黑色素瘤)中Beclin 1和MAP1LC3的表达。结果随着肿瘤的进展,瘤细胞胞质中 Beclin 1和 MAPLC3的表达水平显著下降( P <0．05)。正常表皮、表皮痣、放射性黑色素瘤、垂直性黑色素瘤和转移性黑色素瘤中Beclin 1、MAP1LC3的阳性率分别为100%、85%、58%、49．5%、17%,100%、95%、50%、44．4%、17%(P<0．05)。结论黑色素瘤中Beclin 1和MAP1LC3表达与肿瘤的进展呈负相关,且二者表达与预后因素有关。%Purpose To detect the expression of autophagic genes Beclin 1 and MAP1LC3 in cutaneous malignant melanoma and to ex-plore the relationship between autophagia and malignant melanoma. Methods 85 cases of speicmens including normal skin tissue, in-tradermal nevi, radial growth phase melanomas, vertical growth phase melanomas, and metastatic melanoma were collected, and the protein expression of Beclin 1 and MAP1LC3 were evaluated by immunohistochemistry of SP methods. Results The Beclin 1 and MAP1LC3 expression were pretended to be 100% in normal skin tissue, and they were declined to 85% and 95% in intradermal nevi, 58% and 50% in radial growth phase melanomas, 49. 5% and 44. 4% in vertical growth phase melanomas, both of 17% in melanoma metastases (P<0. 05). Conclusion Beclin 1 and MAP1LC3 autophagic gene expression were significantly decreased with tumor pro-gression, as well as was correlated with conventional histopathologic prognostic factors.
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