Haiyan Chu1,2, Liping Xia3,4, Xiaonan Qiu1,2, Dongying Gu5, Linjun Zhu6, Jing Jin1,2, Gaoyun Hui1,2, Qiuhan Hua1,2, Mulong Du1,2, Na Tong1,2, Jinfei Chen5, Zhengdong Zhang1,2, Meilin Wang1,2. 1. Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China. 2. Department of Genetic Toxicology, Key Laboratory of Modern Toxicology of the Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China. 3. Department of Nursing, Yancheng Health Vocational and Technical College, Yancheng, China. 4. Department of Nursing, Changhai Hospital, Second Military Medical University, Shanghai, China. 5. Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China. 6. Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Abstract
BACKGROUND: PIWI-interacting RNAs (piRNAs), which are a novel type of identified small noncoding RNA (ncRNA), play a crucial role in germline development and carcinogenesis. METHODS: By systematically screening all known piRNAs, the authors identified 7 common single nucleotide polymorphisms (SNPs) in 9 piRNAs. Associations between these selected SNPs and the risk of colorectal cancer (CRC) were detected in a case-control study. A quantitative real-time polymerase chain reaction assay was used to evaluate messenger RNA (mRNA) expression levels of piR-015551 and of the long ncRNA (lncRNA) LNC00964-3 in 88 pairs of tissue samples. RESULTS: The assay revealed that reference SNP rs11776042 in piR-015551 was significantly associated with a decreased risk of CRC in an additive model (P = .020). However, this protective effect was not significant after correction for multiple comparisons (test for the false discovery rate; P = .140). Furthermore, the authors observed that mRNA expression levels of LNC00964-3 (an lncRNA that included the piR-015551 sequence but not piR-015551) were significantly lower in CRC tissues than in corresponding normal tissues (P = 1.5 × 10(-5) for LNC00964-3; P = .899 for piR-015551). Correlation analysis revealed that piR-015551 expression was positively correlated with expression levels of LNC00964-3 (CRC tissues: r = 0.574, P = 5.13 × 10(-9) ; normal tissues: r = 0.601, P = 5.76 × 10(-10)). Moreover, rs11776042 was not significantly correlated with mRNA expression levels of piR-015551 or LNC00964-3 (all P > .05). CONCLUSIONS: The current findings reveal the possibility that piR-015551 may be generated from LNC00964-3, which may be involved in the development of CRC.
BACKGROUND:PIWI-interacting RNAs (piRNAs), which are a novel type of identified small noncoding RNA (ncRNA), play a crucial role in germline development and carcinogenesis. METHODS: By systematically screening all known piRNAs, the authors identified 7 common single nucleotide polymorphisms (SNPs) in 9 piRNAs. Associations between these selected SNPs and the risk of colorectal cancer (CRC) were detected in a case-control study. A quantitative real-time polymerase chain reaction assay was used to evaluate messenger RNA (mRNA) expression levels of piR-015551 and of the long ncRNA (lncRNA) LNC00964-3 in 88 pairs of tissue samples. RESULTS: The assay revealed that reference SNP rs11776042 in piR-015551 was significantly associated with a decreased risk of CRC in an additive model (P = .020). However, this protective effect was not significant after correction for multiple comparisons (test for the false discovery rate; P = .140). Furthermore, the authors observed that mRNA expression levels of LNC00964-3 (an lncRNA that included the piR-015551 sequence but not piR-015551) were significantly lower in CRC tissues than in corresponding normal tissues (P = 1.5 × 10(-5) for LNC00964-3; P = .899 for piR-015551). Correlation analysis revealed that piR-015551 expression was positively correlated with expression levels of LNC00964-3 (CRC tissues: r = 0.574, P = 5.13 × 10(-9) ; normal tissues: r = 0.601, P = 5.76 × 10(-10)). Moreover, rs11776042 was not significantly correlated with mRNA expression levels of piR-015551 or LNC00964-3 (all P > .05). CONCLUSIONS: The current findings reveal the possibility that piR-015551 may be generated from LNC00964-3, which may be involved in the development of CRC.
Authors: Norhan A Sabbah; Wael M Abdalla; Walid A Mawla; Nagla AbdAlMonem; Amal F Gharib; Ahmed Abdul-Saboor; Abdallah S Abdelazem; Nermin Raafat Journal: Genes (Basel) Date: 2021-04-19 Impact factor: 4.096