[Killer immunoglobulin-like receptor gene distribution in Guangdong Han population]

Xiao-lin Yin, Kun-yuan Guo, Hong-jing Ma, Zheng-chuan Shang, Lu-lu Xiao, Xin Ye, Yang Zhao
Di 1 Jun Yi da Xue Xue Bao, Academic Journal of the First Medical College of PLA 2004, 24 (12): 1416-8

OBJECTIVE: To investigate the distribution of killer immunoglobulin-like receptor (KIR) gene in Guangdong Han population.

METHODS: KIR phenotype was examined by PCR with sequence-specific primers in 96 subjects of Han nationality in Guangdong Province of China, and KIR frequency was calculated and compared with those in Caucasian, north Indian and Japanese populations.

RESULT: The gene expression frequency of KIR in Guangdong Han people was 2DL1(0.85), 2DL2(0.12), 2DL3(0.58), 2DL4(1), 2DL5(0.24), 3DL1(0.96), 3DL2(1), 3DL3(1), 2DP1(0.97), 2DP2(0.98), 2DS1(0.10), 2DS2(0.30), 2DS3(0.02), 2DS4(0.28), 1D(0.65), 2DS5(0.19), and 3DS1(0.23) respectively. Comparison of the KIR recognizing the same HLA ligand suggested significantly higher expression frequency of inhibitory KIR than that of activating KIR. Compared with Caucasian and north Indian populations, Guangdong Han population had significantly lower expression frequency of activating KIR gene with the exception of KIR2DS4.

CONCLUSION: Different KIR genes have different expression frequencies in Guangdong Han population, and KIR gene distribution varies between populations of different races.

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