PMID- 19729194 OWN - NLM STAT- MEDLINE DCOM- 20100114 LR - 20141120 IS - 1879-3231 (Electronic) IS - 0093-691X (Linking) VI - 72 IP - 8 DP - 2009 Nov TI - Amphiregulin promotes the proliferation of trophoblast cells during preimplantation development of porcine embryos. PG - 1023-31 LID - 10.1016/j.theriogenology.2009.05.021 [doi] AB - Our objective was to investigate the effects of in vitro culture (IVC) medium supplemented with amphiregulin (AREG) on the preimplantation embryonic development of porcine (Genus: Sus domestica, Species: Landrace) embryos derived from in vitro fertilization (IVF) and parthenogenetic activation (PA). In vitro fertilization and PA embryos at the 1-cell stage were cultured in IVC medium supplemented with 0, 0.5, 5, or 50 ng/mL AREG for 7 d. There were significantly greater total numbers of cells in blastocysts of IVF and PA embryos cultured with 50 ng/mL AREG compared with that of controls. In vitro fertilization and PA embryos were then cultured in NCSU-23 medium supplemented with 50 ng/mL AREG on Days 1 through 7, Days 1 through 3 (early stage), or Days 4 through 7 (late stage), or without AREG. There were significantly greater numbers of trophoblast cells in the late-stage and full-term groups of IVF and PA embryos than in the early-stage and control groups. The presence of AREG protein in IVF-derived blastocysts was detected using a polyclonal AREG antibody and indirect immunofluorescence. Amphiregulin protein was localized in both the cytoplasm and nucleus. Using real-time polymerase chain reaction, we detected the expression of AREG mRNA in all developmental stages of IVF and PA embryos; however, the expression level varied according to stage. Thus, the incubation of porcine IVF and PA embryos in AREG-supplemented culture medium mainly at the late preimplantation stage increases the numbers of trophoblast cells. FAU - Lee, J H AU - Lee JH AD - College of Veterinary Medicine, Chungbuk National University, Cheongju 361-763, Korea. FAU - Lee, E AU - Lee E FAU - Biswas, D AU - Biswas D FAU - Jeung, C S AU - Jeung CS FAU - Lee, G S AU - Lee GS FAU - Hyun, S H AU - Hyun SH FAU - Jeung, E B AU - Jeung EB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090903 PL - United States TA - Theriogenology JT - Theriogenology JID - 0421510 RN - 0 (Amphiregulin) RN - 0 (Culture Media) RN - 0 (Glycoproteins) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (RNA, Messenger) SB - IM MH - Amphiregulin MH - Animals MH - Cell Nucleus/metabolism MH - Culture Media MH - Cytoplasm/metabolism MH - *Embryo Culture Techniques MH - Embryonic Development/*drug effects MH - Fertilization in Vitro MH - Glycoproteins/analysis/metabolism/*pharmacology MH - Intercellular Signaling Peptides and Proteins/analysis/metabolism/*pharmacology MH - Polymerase Chain Reaction MH - RNA, Messenger/metabolism MH - *Swine MH - Trophoblasts/*drug effects/metabolism EDAT- 2009/09/05 06:00 MHDA- 2010/01/15 06:00 CRDT- 2009/09/05 06:00 PHST- 2009/01/06 00:00 [received] PHST- 2009/05/24 00:00 [revised] PHST- 2009/05/28 00:00 [accepted] PHST- 2009/09/05 06:00 [entrez] PHST- 2009/09/05 06:00 [pubmed] PHST- 2010/01/15 06:00 [medline] AID - S0093-691X(09)00305-7 [pii] AID - 10.1016/j.theriogenology.2009.05.021 [doi] PST - ppublish SO - Theriogenology. 2009 Nov;72(8):1023-31. doi: 10.1016/j.theriogenology.2009.05.021. Epub 2009 Sep 3.