PMID- 30619090 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200225 IS - 1664-2392 (Print) IS - 1664-2392 (Electronic) IS - 1664-2392 (Linking) VI - 9 DP - 2018 TI - FSHR Trans-Activation and Oligomerization. PG - 760 LID - 10.3389/fendo.2018.00760 [doi] LID - 760 AB - Follicle stimulating hormone (FSH) plays a key role in human reproduction through, among others, induction of spermatogenesis in men and production of estrogen in women. The function FSH is performed upon binding to its cognate receptor-follicle-stimulating hormone receptor (FSHR) expressed on the surface of target cells (granulosa and Sertoli cells). FSHR belongs to the family of G protein-coupled receptors (GPCRs), a family of receptors distinguished by the presence of various signaling pathway activation as well as formation of cross-talking aggregates. Until recently, it was claimed that the FSHR occurred naturally as a monomer, however, the crystal structure as well as experimental evidence have shown that FSHR both self-associates and forms heterodimers with the luteinizing hormone/chorionic gonadotropin receptor-LHCGR. The tremendous gain of knowledge is also visible on the subject of receptor activation. It was once thought that activation occurs only as a result of ligand binding to a particular receptor, however there is mounting evidence of trans-activation as well as biased signaling between GPCRs. Herein, we describe the mechanisms of aforementioned phenomena as well as briefly describe important experiments that contributed to their better understanding. FAU - Szymanska, Kamila AU - Szymanska K AD - Department of Biochemistry and Molecular Biology, Medical University of Lublin, Lublin, Poland. FAU - Kalafut, Joanna AU - Kalafut J AD - Department of Biochemistry and Molecular Biology, Medical University of Lublin, Lublin, Poland. FAU - Przybyszewska, Alicja AU - Przybyszewska A AD - Department of Biochemistry and Molecular Biology, Medical University of Lublin, Lublin, Poland. FAU - Paziewska, Beata AU - Paziewska B AD - Department of Biochemistry and Molecular Biology, Medical University of Lublin, Lublin, Poland. FAU - Adamczuk, Grzegorz AU - Adamczuk G AD - Independent Medical Biology Unit, Medical University of Lublin, Lublin, Poland. FAU - Kielbus, Michal AU - Kielbus M AD - Department of Biochemistry and Molecular Biology, Medical University of Lublin, Lublin, Poland. FAU - Rivero-Muller, Adolfo AU - Rivero-Muller A AD - Department of Biochemistry and Molecular Biology, Medical University of Lublin, Lublin, Poland. AD - Cell Biology, Biosciences, Faculty of Science and Engineering, Abo Akademi University, Turku, Finland. LA - eng PT - Journal Article PT - Review DEP - 20181213 PL - Switzerland TA - Front Endocrinol (Lausanne) JT - Frontiers in endocrinology JID - 101555782 PMC - PMC6301190 OTO - NOTNLM OT - G protein-coupled receptor (GPCR) OT - biased signaling OT - follicle-stimulating hormone (FSH) OT - follicle-stimulating hormone receptor (FSHR) OT - heterodimers OT - homodimers OT - oligomerization OT - transactivation EDAT- 2019/01/09 06:00 MHDA- 2019/01/09 06:01 PMCR- 2018/01/01 CRDT- 2019/01/09 06:00 PHST- 2018/09/26 00:00 [received] PHST- 2018/11/30 00:00 [accepted] PHST- 2019/01/09 06:00 [entrez] PHST- 2019/01/09 06:00 [pubmed] PHST- 2019/01/09 06:01 [medline] PHST- 2018/01/01 00:00 [pmc-release] AID - 10.3389/fendo.2018.00760 [doi] PST - epublish SO - Front Endocrinol (Lausanne). 2018 Dec 13;9:760. doi: 10.3389/fendo.2018.00760. eCollection 2018.