gene MMP9 is significantly upregulated in 23-wk-old (laying phase) chicken ovaries compared with 6-wk-old ovaries (prepubertal phase). In reproductively active chicken ovary, the enzyme expression level increases during follicular maturation. Enzyme MMP9 mRNA expression continues to rise in postovulatory follicle 1 and postovulatory follicle 2 after ovulation
enzyme matrix metalloproteinase 9/gelatinase B is required for neural crest cell migration, which are neuroepithelial progenitors that convert into mesenchyme and migrate along defined paths throughout the embryo. The enzyme plays a role during neural crest cell detachment from the neural tube, overview
potential role of the MMP system in avian oviduct development, avian reproductive system differs from that of mammals. The gelatinases, stromelysins and matrilysins, all belonging to the MMP family, are capable of degrading major constituents of basement membranes, including type IV collagen, laminin and fibronectin. Gelatinolytic activity of MMPs in the chicken oviduct during maturation, overview
enzyme MMP9 promotes neural crest cell emigration from the neural tube by enhancing breakage of laminin at the basement-membrane, mechanism of activity, overview
enzymes MMP1, MMP3, and MMP9 are synthesized and secreted by granulosa cells of different follicles in the chicken ovary, overview. The three MMP genes (MMP1, MMP3, and MMP9) are significantly upregulated 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) remains low in prehierarchical and preovulatory follicles but increases in postovulatory follicles (POFs). Both MMP3 and MMP9 expression levels increase during follicular maturation. MMP3 reaches maximal expression in the first largest follicle (F1), while MMP9 levels continue to rise in POF1 and POF2 after ovulation
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CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
gene MMP9, cloning of an enzyme fragment, containing an ATG start codon, signal peptide, prodomain sequence, active site, fibronectin II repeat domain and zinc binding sequence,from chondrocyte cDNA, stable recombinant expression in a rat chondrosarcoma cell line
the mRNA of MMP9 in the granulosa cells is induced by TGFB1 but not follicle-stimulating hormone, luteinizing hormone, progesterone, or estrogen. Luciferase reporter and mutagenesis analysis indicate the AP1 and NFkappaB elements located in the promoter region from -1700 to -2400 bp are critical for both basal and TGFB1-induced MMP9 transcription
Expression and localization of matrix metalloproteinases (MMP-2, -7, -9) and their tissue inhibitors (TIMP-2, -3) in the chicken oviduct during maturation
Cell Tissue Res.
364
185-197
2016
Gallus gallus (Q9DE15), Gallus gallus, Gallus gallus Hy-Line Brown (Q9DE15)