HLA-G allele and Haplotype Frequencies in a Healthy Population of Iran
-
Zahra Kuroshli
,
Hamid Gourabi
,
Masoud Bazrgar
,
Mohammad Hossein Sanati
,
Elmira Bahraminejad
,
Khadije Anisi
Abstract
The human leukocyte antigen (HLA)-G molecule is expressed in cytotrophoblast cells, adult thymic epithelial cells, erythroblasts, pancreatic islets and mesenchymal stem cells. Although, HLA-G expression in allotransplanted patients is correlated with a better allograft acceptance, it is associated with an advanced grade of the tumor in cancer. In addition to the role on the immune system, HLA-G is also involved in successful pregnancy through the embryo implantation, fetal survival and the initial steps of hematopoiesis and angiogenesis.
The aim of this study was determination of HLA-G allele frequencies in a healthy population of Iran. In this research, we selected 100 samples from healthy Iranian individuals and henceforth, we used polymerase chain reaction (PCR) followed by sequencing technique for exon 2, 3, 4 and intron 2 of the gene for evaluating the HLA-G alleles frequencies. Investigation of intronic (intron 2) variation is the novelty of our study.
The obtained results indicated thirteen alleles of HLA-G in Iranian individuals including G*01:01:01:01, G*01:06, G*01:01:01:06, G*01:01:02, G*01:01:03, G*01:01:05, G*01:01:06, G*01:01:07, G*01:01:08, G*01:03, G*01:04:01, G*01:04:03, and G*01:04:04. According to this study, the most prevalent alleles in the Iranian population were G*01:01:01:01 (52.5%), G*01:01:02 (16%) and G*01:04:03 (14.5%) and also the lowest alleles regarding the frequency were G*01:01:01:06 (0.5%) and G*01:03 (0.5%).
The results of G*01:01:01:01 and G*01:04:01 frequencies showed some similarities with the polish population. Our results were similar to the north Indian population for the frequencies of G*01:06 and G*01:01:02.
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| Issue | Vol 13, No 3 (2014) | |
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| Allele frequency HLA-G Iranian Polymorphism Population | ||
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