Study of acetylated histone h3k9 – an active chromatin mark – in chromosomes from adult and fetal human lymphocytes

Olga A. Efimova , Anna A. Pendina , Yuliia G. Lezhnina , Andrei V. Tikhonov , Olga G. Chiryaeva , Lyubov I. Petrova , Vera S. Dudkina , Alla S. Koltsova , Mikhail I. Krapivin , Anastasiia V. Petrovskaia-Kaminskaia , Olga E. Talantova , Tatiana V. Kuznetzova , Vladislav S. Baranov

Ecological Genetics ›› 2019, Vol. 17 ›› Issue (3) : 111 -117.

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Ecological Genetics ›› 2019, Vol. 17 ›› Issue (3) : 111 -117. DOI: 10.17816/ecogen173111-117
Human ecological genetics
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Study of acetylated histone h3k9 – an active chromatin mark – in chromosomes from adult and fetal human lymphocytes

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Abstract

Background: Incorrect epigenetic modifications of the human genome may result in epigenetic disorders, thus, highlighting the necessity of studying chromosome epigenetic patterns in human development.

Aim of the study: A comparative analysis of acetylated histone H3K9 (AcH3K9) patterns in human metaphase chromosomes from the lymphocytes of adults and fetuses.

            Materials and methods: The immunocytochemical detection of AcH3K9 in the metaphase chromosomes from PHA-stimulated peripheral lymphocytes of 13 adults and cord blood lymphocytes of 10 fetuses at 20-22 weeks of gestation.

Results: Both in the chromosomes of the adults and the fetuses, AcH3K9 accumulated in the R- and T-, but not G-bands and avoided the regions of pericentromeric heterochromatin of the chromosomes 1, 9 and 16. When comparing the adult and the fetal chromosomes, different levels of AcH3K9 were revealed in a few bands: 2q31, 5p13, 5p15 and 16p13 had higher level of Н3К9 acetylation in adults, in contrast to 9q13 which was hyperacetylated in fetuses.

Conclusion: The АсН3К9 distribution in metaphase chromosomes is band-specific and is similar between the adults and the fetuses, excluding a few bands with different acetylation levels.

Keywords

epigenetics / human development / histone acetylation / chromosomes / chromatin disorders / prenatal diagnosis

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Olga A. Efimova,Anna A. Pendina,Yuliia G. Lezhnina,Andrei V. Tikhonov,Olga G. Chiryaeva,Lyubov I. Petrova,Vera S. Dudkina,Alla S. Koltsova,Mikhail I. Krapivin,Anastasiia V. Petrovskaia-Kaminskaia,Olga E. Talantova,Tatiana V. Kuznetzova,Vladislav S. Baranov. Study of acetylated histone h3k9 – an active chromatin mark – in chromosomes from adult and fetal human lymphocytes. Ecological Genetics, 2019, 17(3): 111-117 DOI:10.17816/ecogen173111-117

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Scholarship of the President of the Russian FederationСтипендия Президента РФ()

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Efimova O.A., Pendina A.A., Lezhnina Y.G., Tikhonov A.V., Chiryaeva O.G., Petrova L.I., Dudkina V.S., Koltsova A.S., Krapivin M.I., Petrovskaia-Kaminskaia A.V., Talantova O.E., Kuznetzova T.V., Baranov V.S.

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