PMID- 28742001 OWN - NLM STAT- MEDLINE DCOM- 20170906 LR - 20191209 IS - 1465-2099 (Electronic) IS - 0022-1317 (Print) IS - 0022-1317 (Linking) VI - 98 IP - 8 DP - 2017 Aug TI - Molecular cloning of porcine Siglec-3, Siglec-5 and Siglec-10, and identification of Siglec-10 as an alternative receptor for porcine reproductive and respiratory syndrome virus (PRRSV). PG - 2030-2042 LID - 10.1099/jgv.0.000859 [doi] AB - In recent years, several entry mediators have been characterized for porcine reproductive and respiratory syndrome virus (PRRSV). Porcine sialoadhesin [pSn, also known as sialic acid-binding immunoglobulin-type lectin (Siglec-1)] and porcine CD163 (pCD163) have been identified as the most important host entry mediators that can fully coordinate PRRSV infection into macrophages. However, recent isolates have not only shown a tropism for sialoadhesin-positive cells, but also for sialoadhesin-negative cells. This observation might be partly explained by the existence of additional receptors that can support PRRSV binding and entry. In the search for new receptors, recently identified porcine Siglecs (Siglec-3, Siglec-5 and Siglec-10), members of the same family as sialoadhesin, were cloned and characterized. Only Siglec-10 was able to significantly improve PRRSV infection and production in a CD163-transfected cell line. Compared with sialoadhesin, Siglec-10 performed equally effectively as a receptor for PRRSV type 2 strain MN-184, but it was less capable of supporting infection with PRRSV type 1 strain LV (Lelystad virus). Siglec-10 was demonstrated to be involved in the endocytosis of PRRSV, confirming the important role of Siglec-10 in the entry process of PRRSV. In conclusion, it can be stated that PRRSV may use several Siglecs to enter macrophages, which may explain the strain differences in the pathogenesis. FAU - Xie, Jiexiong AU - Xie J AD - Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium. FAU - Christiaens, Isaura AU - Christiaens I AD - Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium. FAU - Yang, Bo AU - Yang B AD - Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium. FAU - Breedam, Wander Van AU - Breedam WV AD - Unit for Medical Biotechnology, Medical Biotechnology Center, VIB, Technologiepark 927, B-9052 Ghent, Belgium. FAU - Cui, Tingting AU - Cui T AD - Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium. FAU - Nauwynck, Hans J AU - Nauwynck HJ AD - Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium. LA - eng PT - Journal Article DEP - 20170726 PL - England TA - J Gen Virol JT - The Journal of general virology JID - 0077340 RN - 0 (Antigens, CD) RN - 0 (Antigens, Differentiation, Myelomonocytic) RN - 0 (CD163 antigen) RN - 0 (Receptors, Cell Surface) RN - 0 (Receptors, Virus) RN - 0 (Sialic Acid Binding Ig-like Lectin 3) SB - IM MH - Amino Acid Sequence MH - Animals MH - Antigens, CD/genetics/metabolism MH - Antigens, Differentiation, Myelomonocytic/genetics/metabolism MH - *Cloning, Molecular MH - Endocytosis MH - Molecular Sequence Data MH - Porcine Reproductive and Respiratory Syndrome/genetics/*metabolism/physiopathology/virology MH - Porcine respiratory and reproductive syndrome virus/genetics/*metabolism MH - Receptors, Cell Surface/genetics/metabolism MH - Receptors, Virus/chemistry/genetics/*metabolism MH - Sequence Alignment MH - Sialic Acid Binding Ig-like Lectin 3/chemistry/genetics/*metabolism MH - Swine PMC - PMC5656783 EDAT- 2017/07/26 06:00 MHDA- 2017/09/07 06:00 PMCR- 2017/07/26 CRDT- 2017/07/26 06:00 PHST- 2017/07/26 06:00 [pubmed] PHST- 2017/09/07 06:00 [medline] PHST- 2017/07/26 06:00 [entrez] PHST- 2017/07/26 00:00 [pmc-release] AID - 000859 [pii] AID - 10.1099/jgv.0.000859 [doi] PST - ppublish SO - J Gen Virol. 2017 Aug;98(8):2030-2042. doi: 10.1099/jgv.0.000859. Epub 2017 Jul 26.