PMID- 30057317 OWN - NLM STAT- MEDLINE DCOM- 20190315 LR - 20190315 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 503 IP - 3 DP - 2018 Sep 10 TI - St6gal1 knockdown alters HBV life cycle in HepAD38 cells. PG - 1841-1847 LID - S0006-291X(18)31626-7 [pii] LID - 10.1016/j.bbrc.2018.07.124 [doi] AB - Complex glycans at the cell surface play important roles, and their alteration is known to modulate cellular activity. Previously, we found that HBV replication in HepAD38 altered cell-surface sialylated N-glycan through the upregulation of St6gal1, Mgat2, and Mgat4a expression. Here we studied the effects of knocking them down on HBV replication in HepAD38. Our results showed that St6gal1 knockdown (KD) reduced intracellular HBV rcDNA level by 90%, that Mgat2 KD did not change the intracellular HBV rcDNA level, and that Mgat4 KD increased the intracellular HBV rcDNA level by 19 times compared to Tet(-). The changes in intracellular rcDNA level were followed by the alteration of Pol and HBc expression. Our study suggests that St6gal1 KD contributes more to the HBV life cycle than Mgat2 or Mgat4a KD through the modification of intracellular L, Pol, and HBc expression. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - Priyambada, Surya Agung AU - Priyambada SA AD - International Center for Biotechnology, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan. FAU - Misaki, Ryo AU - Misaki R AD - International Center for Biotechnology, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan. FAU - Okamoto, Toru AU - Okamoto T AD - Department of Molecular Virology, Research Institute for Microbial Disease, Osaka University, Yamada-oka 3-1, Suita, Osaka, 565-0871, Japan. FAU - Ohashi, Takao AU - Ohashi T AD - International Center for Biotechnology, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan. FAU - Ueda, Keiji AU - Ueda K AD - Division of Virology, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Yamada-oka 2-2, Suita, Osaka, 565-0871, Japan. FAU - Matsuura, Yoshiharu AU - Matsuura Y AD - Department of Molecular Virology, Research Institute for Microbial Disease, Osaka University, Yamada-oka 3-1, Suita, Osaka, 565-0871, Japan. FAU - Fujiyama, Kazuhito AU - Fujiyama K AD - International Center for Biotechnology, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan. Electronic address: fujiyama@icb.osaka-u.ac.jp. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180726 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Antigens, CD) RN - 0 (DNA, Circular) RN - EC 2.4.- (Glycosyltransferases) RN - EC 2.4.99.- (Sialyltransferases) RN - EC 2.4.99.1 (ST6GAL1 protein, human) SB - IM MH - Antigens, CD/genetics/metabolism MH - DNA, Circular/genetics/metabolism MH - Glycosyltransferases/metabolism MH - Hepatitis B virus/*growth & development MH - Humans MH - Mutation MH - Sialyltransferases/*deficiency/genetics/metabolism MH - Tumor Cells, Cultured OTO - NOTNLM OT - Complex-type N-glycan OT - Hepatitis B virus OT - N-glycan OT - Sialylated N-glycan EDAT- 2018/07/31 06:00 MHDA- 2019/03/16 06:00 CRDT- 2018/07/31 06:00 PHST- 2018/07/19 00:00 [received] PHST- 2018/07/24 00:00 [accepted] PHST- 2018/07/31 06:00 [pubmed] PHST- 2019/03/16 06:00 [medline] PHST- 2018/07/31 06:00 [entrez] AID - S0006-291X(18)31626-7 [pii] AID - 10.1016/j.bbrc.2018.07.124 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2018 Sep 10;503(3):1841-1847. doi: 10.1016/j.bbrc.2018.07.124. Epub 2018 Jul 26.