• Asian Pacific Journal of Cancer Prevention
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• 제16권15호
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• pp.6457-6461
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• 2015

MicroRNAs directly and indirectly influence many biological processes such as apoptosis, cell maintenance, and immune responses, impacting on tumor genesis and metastasis. They modulate gene expression at the posttranscriptional level and are associated with progression of liver disease. Hepatocellular carcinoma (HCC) is a cancer which mostly occurs in males. There are many factors affect HCC development, for example, hepatitis B virus (HBV), hepatitis C virus (HCV) and human immunodeficiency virus (HIV), co-infection, environmental factors including alcohol, aflatoxin consumption and host-related factors such as age, gender immune response, microRNA and single nucleotide polymorphisms (SNPs). Chronic infection with the hepatitis B virus is the major factor leading to HCC progression since it causes the liver injury. At present, there are many reports regarding the association of SNPs on miRNAs and the HCC progression. In this research, we investigated the role of miR-149 (rs2292832) and miR-101-1 (rs7536540) with HCC progression in Thai population. The study included 289 Thai subjects including 104 HCC patients, 90 patients with chronic hepatitis B virus infection (CHB) and 95 healthy control subjects. The allele and genotype of rs2292832 and rs7536540 polymorphisms were determined by TaqMan real-time PCR assay. Our results revealed no significant association between miR-149 (rs2292832) and miR-101-1 (rs7536540) and the risk of HCC in our Thai population. However, this research is the first study of miR-149 (rs2292832) and miR-101-1 (rs7536540) in HCC in Thai populations and the results need to be confirmed with a larger population.

• Asian Pacific Journal of Cancer Prevention
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• 제14권4호
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• pp.2337-2342
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• 2013

Meta-analyses have shown that microRNA polymorphisms have variable effects in different population. Yet, no meta-analysis investigated the association of two common polymorphisms of miRNA, mir-499 rs3746444 polymorphism and mir-149 rs2292832 polymorphism, with cancer risk in the Chinese population. We searched the PubMed, Web of Knowledge, MEDLINE, CNKI databases, as well as Cochrane library, updated on December 31, 2012 for assays regarding cancer risk association with these two common polymorphisms in the present meta-analysis. Odds ratios (ORs) and 95% confidence intervals (95% CIs) were used to explore the strength of associations. The results showed that rs3746444 polymorphism was associated with increased cancer risk (dominant model: GG/AG vs. AA: OR = 1.43, 95% CI: 1.14-1.80; recessive model: GG vs. AG/AA: OR = 1.54, 95% CI: 1.04-2.30; homozygote model: GG vs. AA: OR = 1.69, 95% CI: 1.10-2.60; heterozygote model: AG vs. AA: OR = 1. 35, 95% CI: 1.09-1.67), and rs3746444 was associated with liver cancer in the subgroup of cancer types. For the rs2292832 polymorphism, the results showed no significant risk association in both overall pooled analysis and subgroup of cancer types, smoking status, gender and tea drinking status in the Chinese population. This meta-analysis suggested that the rs3746444 GG genotype is associated with increased cancer risk, especially liver cancer, while the rs2292832 polymorphism showed no association with cancer risk in Chinese.

• 생명과학회지
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• 제29권7호
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• pp.800-808
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• 2019

샤르코-마리-투스병(Charcot-Marie-Tooth disease: CMT)은 희귀 말초신경병의 그룹으로, 진행성 근육 약화 및 위축, 감각 소실, 상지 및 하지의 무반사 증상을 나타낸다. CMT1A는 PMP22 유전자가 존재하는 17p12 지역의 직렬 중복으로 발병하는데, 유전자형-표현형의 상관성이 느슨하여 2차 유전적 요인의 존재를 암시한다. 최근 MIR149의 rs71428439 (n.83A>G)와 rs2292832 (n.86T>C) 변이가 후기 발병 및 가벼운 증상의 표현형과 연관성이 있는 것으로 보고되었다. 본 연구는 CMT1A 기계내 임상적 표현형의 이질성이 MIR149의 SNP과 연관성이 있는지를 규명하기 위해 수행하였으며, 조사 대상으로는 가계내 표현형의 차이가 심한 6 CMT1A 대 가계를 대상으로 하였다. 그 결과, MIR149의 rs71428439와 s2292832 유전자형은 가족내의 늦은 발병과 약한 중증도의 유전적 요인으로 작용할 수 있음을 제시하였다. 특히, AG+GG (n.83A>G)와 TC+CC 유전자형(n.86T>C)은 발병 시기가 늦고 경미한 증상을 보였다. 운동신경 전기전도도(MNCV)는 MIR149 유전형과 연관이 없는 것으로 보였는데, 이러한 결과는 이전 연구와 일치한다. 따라서 본 연구는 MIR149의 rs71428439와 rs2292832 변이는 CMT1A 가계내 표현형적 이질성의 원인 중 하나로 작용할 가능성을 제시한다. 본 연구는 가계 내 증상의 차이가 심한 6 대가족을 사용하여 연구를 수행한 것은 의미가 크다고 여겨지며, 이런 결과는 CMT1A 환자의 분자 진단과 치료에 도움을 줄 수 있을 것으로 기대된다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권2호
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• pp.1047-1055
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• 2014

Background: MicroRNAs (miRNAs) are an abundant class of endogenous small non-coding RNAs of 20-25 nucleotides in length that function as negative gene regulators. MiRNAs play roles in most biological processes, as well as diverse human diseases including cancer. Recently, many studies investigated the association between SNPs in miR-146a rs2910164, miR-196a2 rs11614913, miR-149 rs229283, miR-499 rs3746444 and colorectal cancer (CRC), which results have been inconclusive. Methodology/Principal Findings: PubMed, EMBASE, CNKI databases were searched with the last search updated on November 5, 2013. For miR-196a2 rs11614913, a significantly decreased risk of CRC development was observed under three genetic models (dominant model: OR = 0.848, 95%CI: 0.735-0.979, P = 0.025; recessive model: OR = 0.838, 95%CI: 0.721-0.974, P = 0.021; homozygous model: OR = 0.754, 95%CI: 0.627-0.907, P = 0.003). In the subgroup analyses, miR-$196a2^*T$ variant was associated with a significantly decreased susceptibility of CRC (allele model: OR = 0.839, 95%CI: 0.749-0.940, P = 0.000; dominant model: OR = 0.770, 95%CI: 0.653-0.980, P = 0.002; recessive model: OR = 0.802, 95%CI: 0.685-0.939, P = 0.006; homozygous model: OR = 0.695, 95%CI: 0.570-0.847, P = 0.000). As for miR-149 rs2292832, the two genetic models (recessive model: OR = 1.199, 95% CI 1.028-1.398, P = 0.021; heterozygous model: OR = 1.226, 95% CI 1.039-1.447, P = 0.013) demonstrated increased susceptibility to CRC. On subgroup analysis, significantly increased susceptibility of CRC was found in the genetic models (recessive model: OR = 1.180, 95% CI 1.008-1.382, P = 0.040; heterozygous model: OR = 1.202, 95% CI 1.013-1.425, P = 0.013) in the Asian group. Conclusions: These findings supported that the miR-196a2 rs11614913 and miR-149 rs2292832 polymorphisms may contribute to susceptibility to CRC.