Abstract
Many peripheral reproductive tissues have been found to contain gonadotrophin-releasing hormone (GnRH) and express the GnRH gene at low levels, presumably because the hormone functions in a paracrine/autocrine fashion. This study was designed to investigate and characterize GnRH gene expression in human endometrial tissue at different stages of the endometrial cycle. Reverse transcriptase-polymerase chain reaction (RT-PCR) analysis together with Southern blot assay demonstrated that human endometrial tissue expresses the proGnRH gene. RNA samples from endometrial tissue were analysed with two pairs of oligonucleotide primers. Both gave a doublet 870 bases apart at the expected sizes, indicating that both the upstream and downstream transcriptional start sites of the GnRH gene are used in endometrial tissue and that transcripts with and without intron 1 were produced. Our data also demonstrated that utilization of the two promoters varies with the stage of the endometrial cycle. The largest difference came from the mRNA transcribed from the downstream promoter and without intron 1. This mRNA was expressed at a very low level during the proliferative phase and dramatically increased almost 10-fold (P <0.01) during the early secretory phase, and subsequently decreased 5-fold during the late secretory stage. The presence of GnRH mRNA in the endometrium, as well as the differential expression of the GnRH gene during the early secretory phase provides physiological evidence that human GnRH may play a paracrine/autocrine function in the human uterus.
| Original language | English |
|---|---|
| Pages (from-to) | 893-898 |
| Number of pages | 6 |
| Journal | Molecular Human Reproduction |
| Volume | 4 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sep 1998 |
| Externally published | Yes |
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Keywords
- Endometrial cycle
- Human GnRH gene
- MRNA level
- Uterine tissue
ASJC Scopus subject areas
- Obstetrics and Gynaecology
- Genetics
- Developmental Biology
- Embryology
- Cell Biology
Cite this
Expression of gonadotropin-releasing hormone (GnRH) gene in human uterine endometrial tissue. / Dong, Ke Wen; Marcelin, Kerlin; Hsu, Ming I.; Chiang, Chun Ming; Hoffman, Glenn; Roberts, James L.
In: Molecular Human Reproduction, Vol. 4, No. 9, 09.1998, p. 893-898.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Expression of gonadotropin-releasing hormone (GnRH) gene in human uterine endometrial tissue
AU - Dong, Ke Wen
AU - Marcelin, Kerlin
AU - Hsu, Ming I.
AU - Chiang, Chun Ming
AU - Hoffman, Glenn
AU - Roberts, James L.
PY - 1998/9
Y1 - 1998/9
N2 - Many peripheral reproductive tissues have been found to contain gonadotrophin-releasing hormone (GnRH) and express the GnRH gene at low levels, presumably because the hormone functions in a paracrine/autocrine fashion. This study was designed to investigate and characterize GnRH gene expression in human endometrial tissue at different stages of the endometrial cycle. Reverse transcriptase-polymerase chain reaction (RT-PCR) analysis together with Southern blot assay demonstrated that human endometrial tissue expresses the proGnRH gene. RNA samples from endometrial tissue were analysed with two pairs of oligonucleotide primers. Both gave a doublet 870 bases apart at the expected sizes, indicating that both the upstream and downstream transcriptional start sites of the GnRH gene are used in endometrial tissue and that transcripts with and without intron 1 were produced. Our data also demonstrated that utilization of the two promoters varies with the stage of the endometrial cycle. The largest difference came from the mRNA transcribed from the downstream promoter and without intron 1. This mRNA was expressed at a very low level during the proliferative phase and dramatically increased almost 10-fold (P <0.01) during the early secretory phase, and subsequently decreased 5-fold during the late secretory stage. The presence of GnRH mRNA in the endometrium, as well as the differential expression of the GnRH gene during the early secretory phase provides physiological evidence that human GnRH may play a paracrine/autocrine function in the human uterus.
AB - Many peripheral reproductive tissues have been found to contain gonadotrophin-releasing hormone (GnRH) and express the GnRH gene at low levels, presumably because the hormone functions in a paracrine/autocrine fashion. This study was designed to investigate and characterize GnRH gene expression in human endometrial tissue at different stages of the endometrial cycle. Reverse transcriptase-polymerase chain reaction (RT-PCR) analysis together with Southern blot assay demonstrated that human endometrial tissue expresses the proGnRH gene. RNA samples from endometrial tissue were analysed with two pairs of oligonucleotide primers. Both gave a doublet 870 bases apart at the expected sizes, indicating that both the upstream and downstream transcriptional start sites of the GnRH gene are used in endometrial tissue and that transcripts with and without intron 1 were produced. Our data also demonstrated that utilization of the two promoters varies with the stage of the endometrial cycle. The largest difference came from the mRNA transcribed from the downstream promoter and without intron 1. This mRNA was expressed at a very low level during the proliferative phase and dramatically increased almost 10-fold (P <0.01) during the early secretory phase, and subsequently decreased 5-fold during the late secretory stage. The presence of GnRH mRNA in the endometrium, as well as the differential expression of the GnRH gene during the early secretory phase provides physiological evidence that human GnRH may play a paracrine/autocrine function in the human uterus.
KW - Endometrial cycle
KW - Human GnRH gene
KW - MRNA level
KW - Uterine tissue
UR - http://www.scopus.com/inward/record.url?scp=0343522721&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0343522721&partnerID=8YFLogxK
U2 - 10.1093/molehr/4.9.893
DO - 10.1093/molehr/4.9.893
M3 - Article
VL - 4
SP - 893
EP - 898
JO - Molecular Human Reproduction
JF - Molecular Human Reproduction
SN - 1360-9947
IS - 9
ER -