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MC1R activates the
cyclic AMP (cAMP)
response-element
binding protein (CREB)
Increased expression of MITF and
its activation by phosphorylation
stimulate the transcription of
tyrosinase (TYR),TYRP1 and DCT.
Melanin synthesis takes place
within specialized intracellular
organelles named melanosomes.
Pigmentation Genes and Melanin Synthesis
皮肤受到强烈的适应性进化
小汗腺EDAREDA2REDARADD肤色
SLC24A5MATPHERC2KITLGTYRP1OCA2
大汗腺ABCC11
皮肤相关基因更多地受到自然选择
皮肤——人体最大器官接触环境的第一道屏障
皮肤衰老(Skin Aging)
Wrinkles on forehead
Pigment spots on
forehead
Frown lines
Laxity of eyelids
Wrinkles under eyes
Pigment spots on cheeks
Wrinkles on upper lip
Nasolabial folds
Morbus favre racouchot
Crow’s feets
Teleangiectasis
Solar elastosis
Laxity of cheeks
Pigment spots on arm
Even pigmentation on
lower side of forearm
Pigment spots on
back of hands
Fine wrinkles on back
of hand
Cutis rhomboidalis
nuchae
传统面部特征
上眼睑皱褶内眦褶眼裂开度眼裂倾斜眼内角宽眼外角宽
鼻根高度鼻根点凹陷鼻尖方向鼻孔形状
鼻背硬骨部鼻基底鼻宽鼻高鼻长
鼻翼高度
上唇皮部突度卷舌
铲形门齿唇皮部高唇高
口裂宽度
耳垂形状耳壳外展耳长耳宽
颧骨类型下颏类型酒窝双下巴头长头宽头围面宽
下颌角宽容貌面高形态面高耳屏间宽最小额宽
观察特征
测量特征
眼睛
鼻子
嘴
耳朵
面部
www.picb.ac.cn/dermatogenomics
谢谢!