Expression and regulation of MMP1, MMP3, and MMP9 in the chicken ovary in response to gonadotropins, sex hormones, and TGFB1.
Matrix metalloproteinases (MMPs) are a specific class of proteolytic enzymes that play critical roles in follicular development and luteinization in mammals. However, the role of MMPs in avian ovary remains largely unknown. We found that three MMP genes (MMP1, MMP3, and MMP9) were significantly up-regulated in 23-wk-old (laying phase) chicken ovaries compared with 6-wk-old ovaries (prepubertal phase). In reproductively active chicken ovary, MMP1 expression (both mRNA and protein) remained low in prehierarchical and preovulatory follicles but increased in postovulatory follicles (POFs). Both MMP3 and MMP9 expression levels increased during follicular maturation. MMP3 reached maximal expression in the first largest follicle (F1), while MMP9 levels continued to rise in POF1 and POF2 after ovulation. Immunohistochemistry, Western blot analysis, and zymography experiments indicated that MMP1, MMP3, and MMP9 were synthesized and secreted by granulosa cells of different follicles in the chicken ovary. The mRNA expression of MMP1 and MMP3 in the granulosa cells was stimulated by follicle-stimulating hormone, luteinizing hormone, progesterone, and estrogen but not by transforming growth factor beta 1 (TGFB1). However, the mRNA of MMP9 was induced by TGFB1 but not follicle-stimulating hormone, luteinizing hormone, progesterone, or estrogen. Luciferase reporter and mutagenesis analysis indicated the AP1 and NFkappaB elements located in the promoter region from -1700 to -2400 bp were critical for both basal and TGFB1-induced MMP9 transcription. These data provide the first spatial-temporal expression analysis of MMP system in the chicken ovary.
Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, China.
Guiyu
G
Zhu
Li
L
Kang
Qingqing
Q
Wei
Xinxing
X
Cui
Shouzhi
S
Wang
Yuxia
Y
Chen
Yunliang
Y
Jiang
D000818:Animals; D015153:Blotting, Western; D002478:Cells, Cultured; D002645:Chickens / Q000502:physiology*; D005260:Female; D005786:Gene Expression Regulation / Q000187:drug effects; D012739:Gonadal Steroid Hormones / Q000494:pharmacology*; D006062:Gonadotropins / Q000494:pharmacology*; D006107:Granulosa Cells / Q000187:drug effects / Q000378:metabolism; D007150:Immunohistochemistry; D020781:Matrix Metalloproteinase 1 / Q000096:biosynthesis* / Q000235:genetics; D019278:Matrix Metalloproteinase 3 / Q000096:biosynthesis* / Q000235:genetics; D020780:Matrix Metalloproteinase 9 / Q000096:biosynthesis* / Q000235:genetics; D016296:Mutagenesis; D016328:NF-kappa B / Q000096:biosynthesis / Q000235:genetics; D006080:Ovarian Follicle / Q000187:drug effects; D010053:Ovary / Q000187:drug effects* / Q000201:enzymology*; D010957:Plasmids / Q000235:genetics; D012313:RNA / Q000096:biosynthesis / Q000302:isolation & purification; D060888:Real-Time Polymerase Chain Reaction; D018808:Transcription Factor AP-1 / Q000096:biosynthesis / Q000235:genetics; D014162:Transfection; D053773:Transforming Growth Factor beta1 / Q000494:pharmacology*
D012739:Gonadal Steroid Hormones; D006062:Gonadotropins; D016328:NF-kappa B; D018808:Transcription Factor AP-1; D053773:Transforming Growth Factor beta1; D012313:RNA; D019278:Matrix Metalloproteinase 3; D020780:Matrix Metalloproteinase 9; D020781:Matrix Metalloproteinase 1
MMP; chicken; domestic animal reproduction; extracellular matrix; follicle; granulosa cell; ovary