PMID- 31137555 OWN - NLM STAT- MEDLINE DCOM- 20200106 LR - 20200309 IS - 2073-4409 (Print) IS - 2073-4409 (Electronic) IS - 2073-4409 (Linking) VI - 8 IP - 5 DP - 2019 May 20 TI - Long Noncoding RNA HCP5, a Hybrid HLA Class I Endogenous Retroviral Gene: Structure, Expression, and Disease Associations. LID - 10.3390/cells8050480 [doi] LID - 480 AB - The HCP5 RNA gene (NCBI ID: 10866) is located centromeric of the HLA-B gene and between the MICA and MICB genes within the major histocompatibility complex (MHC) class I region. It is a human species-specific gene that codes for a long noncoding RNA (lncRNA), composed mostly of an ancient ancestral endogenous antisense 3' long terminal repeat (LTR, and part of the internal pol antisense sequence of endogenous retrovirus (ERV) type 16 linked to a human leukocyte antigen (HLA) class I promoter and leader sequence at the 5'-end. Since its discovery in 1993, many disease association and gene expression studies have shown that HCP5 is a regulatory lncRNA involved in adaptive and innate immune responses and associated with the promotion of some autoimmune diseases and cancers. The gene sequence acts as a genomic anchor point for binding transcription factors, enhancers, and chromatin remodeling enzymes in the regulation of transcription and chromatin folding. The HCP5 antisense retroviral transcript also interacts with regulatory microRNA and immune and cellular checkpoints in cancers suggesting its potential as a drug target for novel antitumor therapeutics. FAU - Kulski, Jerzy K AU - Kulski JK AUID- ORCID: 0000-0002-9789-245X AD - Faculty of Health and Medical Sciences, UWA Medical School, The University of Western Australia, Crawley, WA 6009, Australia. kulski@me.com. AD - Department of Molecular Life Science, Division of Basic Medical Science and Molecular Medicine, Tokai University School of Medicine, Isehara 259-1193, Japan. kulski@me.com. LA - eng PT - Journal Article PT - Review DEP - 20190520 PL - Switzerland TA - Cells JT - Cells JID - 101600052 RN - 0 (CCCTC-Binding Factor) RN - 0 (CTCF protein, human) RN - 0 (HCP5 long noncoding RNA, human) RN - 0 (HLA-B Antigens) RN - 0 (RNA, Long Noncoding) SB - IM MH - Autoimmune Diseases/*genetics MH - CCCTC-Binding Factor/genetics MH - Chromatin Assembly and Disassembly/genetics MH - Chromosome Mapping MH - Cytomegalovirus/genetics MH - Endogenous Retroviruses/*genetics MH - Epigenome MH - Gene Expression MH - HIV Infections/genetics MH - HLA-B Antigens/*genetics MH - Humans MH - Neoplasms/*genetics MH - Papillomaviridae/genetics MH - Polymorphism, Single Nucleotide/genetics MH - Promoter Regions, Genetic MH - RNA, Long Noncoding/*genetics PMC - PMC6562477 OTO - NOTNLM OT - HCP5 OT - HLA OT - MHC OT - autoimmune diseases OT - cancer OT - competing endogenous RNA (ceRNA) OT - human endogenous retrovirus (HERV) OT - human immunodeficiency virus (HIV) OT - human papillomavirus (HPV) OT - lncRNA COIS- The author declares no conflict of interest. EDAT- 2019/05/30 06:00 MHDA- 2019/05/30 06:01 PMCR- 2019/05/01 CRDT- 2019/05/30 06:00 PHST- 2019/05/05 00:00 [received] PHST- 2019/05/16 00:00 [revised] PHST- 2019/05/17 00:00 [accepted] PHST- 2019/05/30 06:00 [entrez] PHST- 2019/05/30 06:00 [pubmed] PHST- 2019/05/30 06:01 [medline] PHST- 2019/05/01 00:00 [pmc-release] AID - cells8050480 [pii] AID - cells-08-00480 [pii] AID - 10.3390/cells8050480 [doi] PST - epublish SO - Cells. 2019 May 20;8(5):480. doi: 10.3390/cells8050480.