Cakmak Guner B, Karlik E, Marakli S, Gozukirmizi N. Detection of HERV-K6 and HERV-K11 transpositions in the human genome.
Biomed Rep 2018;
9:53-59. [PMID:
29930805 DOI:
10.3892/br.2018.1096]
[Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 04/24/2018] [Indexed: 01/24/2023] Open
Abstract
Mobile genetic elements classed as transposons comprise an estimated 45% of the human genome, and 8% of these elements are human endogenous retroviruses (HERVs). Endogenous retroviruses are retrotransposons, containing 5' and 3' long terminal repeat sequences and encoding envelope, group-specific antigen and DNA polymerase proteins. The aim of the present study was to analyse genome integration polymorphisms of HERV type K member 6 (HERV-K6) and HERV-K11 by using the retrotransposon based molecular marker technique, inter-retrotransposon amplified polymorphism (IRAP). For this purpose, blood samples of 18 healthy individuals within the age range of 10-79 years (10 females and 8 males) were collected, genomic DNAs were isolated and IRAP-polymerase chain reaction (PCR) was performed. IRAP-PCR analyses demonstrated that there were 0-70% polymorphism rates for HERV-K6, and 0-38% polymorphism rates for HERV-K11 among all the samples. Furthermore, the polymorphism rates were 0-70% among females and 11-60% among males for HERV-K6, and 0-38% among females and 0-25% among males for HERV-K11. Age-associated polymorphism was also investigated, but no age-associated polymorphism was observed among the samples. Therefore, HERV-K6 and HERV-K11 polymorphisms may arise on an individual-specific basis. Various previous studies have investigated the associations between the expression of HERVs and cancer or other major diseases. However, few reports have analysed HERV-K movements among individuals. This is the first report to investigate HERV-K6 and HERV-K11 retrotransposon polymorphisms between the genders and different age groups.
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