- 14-bp Insertion/Deletion Polymorphism of the HLA-G Gene in Osteosarcoma Patients.
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Ahrim Moon, Su Kang Kim, Joo Ho Chung, Ki Yong Na, Liliana G Olvi, Eduardo Santini-Araujo, Youn Wha Kim, Yong Koo Park
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Korean J Pathol. 2011;45(5):485-490.
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DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.5.485
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 Abstract
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- BACKGROUND
The major histocompatibility complex class I, G (human leukocyte antigen-G [HLA-G]) gene plays a vital role in the suppression of immune responses. Recently, a number of studies have reported an association between HLA-G and diseases (pregnancy complications, organ transplantation, and tumors). Some of the studies have revealed that the 14-bp insertion/deletion polymorphism might be associated with various diseases. The aim of the present study was to explore a possible influence of the 14-bp insertion/deletion polymorphism on osteosarcoma.
METHODS
Genomic DNA was extracted from 75 formalin-fixed, paraffin-embedded tumor tissues derived from patients with conventional osteosarcoma (OSA) and 183 peripheral blood samples of healthy controls. Fifty-eight cases were South Korean patients with OSA and 17 cases were Argentine patients with OSA. The HLA-G 14-bp insertion/deletion polymorphism at exon 8 of the HLA-G locus was analyzed by polymerase chain reaction.
RESULTS
There was a significantly different distribution profile for the 14-bp genotypes between the Korean OSA and Korean control groups. Specifically, there were more heterozygote 210 bp/224 bp genotypes in the Korean OSA group when compared to the Korean control group (62.1% vs 40.4%, p=0.002).
CONCLUSIONS
The results suggest that HLA-G heterozygote patients may be more susceptible to OSA in the Korean population.
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Citations
Citations to this article as recorded by  - 14-bp Insertion/Deletion Polymorphism of the HLA-G gene in Breast Cancer among Women from North Western Iran
Mehdi Haghi, Mohammad Ali Hosseinpour Feizi, Majid Sadeghizadeh, Abbas Sahebghadam Lotfi
Asian Pacific Journal of Cancer Prevention.2015; 16(14): 6155. CrossRef
- The Global Histone Modification Patterns of Osteosarcoma.
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Sung Im Do, Sung Jig Lim, Youn Wha Kim, Liliana G Olvi, Eduardo Santini-Araujo, Yong Koo Park
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Korean J Pathol. 2011;45(2):146-150.
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DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.2.146
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Abstract
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- BACKGROUND
Epigenetic alteration may affect a patient's prognosis by altering the development and progression of the tumor. Some recent reports have identified a correlation between histone modification and patient outcome. However, no studies have been conducted on global histone modification in osteosarcomas.
METHODS
We investigated histone modification in 54 cases of osteosarcoma by performing immunohistochemical staining. The immunohistochemical expression of four histone modification markers, acetylated H4 lysine 12 (H4K12Ac), acetylated H3 lysine 18, trimethylated H3 lysine 27, and dimethylated H3 lysine 4 were evaluated.
RESULTS
High H4K12Ac expression was correlated with patient age (p=0.011). However, the other histone modification markers showed no correlation with any of the clinicopathological data such as survival, tumor grade, tumor site, metastasis, age, or gender.
CONCLUSIONS
Our study showed that all four histone modification markers are expressed in osteosarcoma (median expression rate, 40 to 60%). However, we did not find a correlation with the clinicopathological factors except for age. Further study to evaluate the reason for the association between H4K12Ac and patient age is needed.
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