Application | Comment | Organism |
---|---|---|
diagnostics | GnT-III expression levels are elevated in high-grade serous ovarian carcinoma tissues and correlate with reduced survival | Homo sapiens |
medicine | therapeutic potential of inhibiting GnT-III as a treatment for controlling epithelial ovarian carcinoma (EOC) growth and recurrence | Homo sapiens |
Cloned (Comment) | Organism |
---|---|
gene MGAT3, quantitative real-time PCR enzyme expression analysis | Homo sapiens |
Protein Variants | Comment | Organism |
---|---|---|
additional information | gene mgat3 suppression via shRNA. A significant increase in ovarian masses and metastasis in control shRNA cells compared with GnT-III shRNA cells is observed. Control cell tumors are more invasive following i.p. injections in NOD/SCID mice or human carcinoma samples, whereas GnT-III shRNA tumors are less vascularized and never invade surrounding tissues | Homo sapiens |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[Notch receptor] | Homo sapiens | - |
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[Notch receptor] | - |
? | |
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] | Homo sapiens | - |
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | Q09327 | - |
- |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
cancer stem cell | - |
Homo sapiens | - |
additional information | quantitative real-time PCR enzyme expression analysis | Homo sapiens | - |
ovary | - |
Homo sapiens | - |
ovary cancer cell | GnT-III expression significantly increases ovarian cancer growth and metastasis and increases the expansion of the ovarian cancer stem cell (CSC) population | Homo sapiens | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[Notch receptor] | - |
Homo sapiens | UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[Notch receptor] | - |
? | |
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] | - |
Homo sapiens | UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] | - |
? |
Synonyms | Comment | Organism |
---|---|---|
GnT-III | - |
Homo sapiens |
MGAT3 | - |
Homo sapiens |
General Information | Comment | Organism |
---|---|---|
malfunction | suppression of GnT-III in epithelial ovarian carcinoma (EOC) cell lines and primary tumor-derived cells results in an inhibition of Notch signaling that is more potent than pharmacologic blockage of Notch activation via gamma-secretase inhibition. The inhibition results from the redirection of the Notch receptor to the lysosome, a distinct mechanism | Homo sapiens |
physiological function | glycosyltransferase GnT-III activates Notch signaling and drives stem cell expansion to promote the growth and invasion of ovarian cancer. Glycosylation mediated by GnT-III increases Notch receptor levels and activity. GnT-III expression controls the expansion of side-population cells, also known as cancer stem cells, GnT-III expression regulates the levels and activation of the heavily glycosylated Notch receptor involved in normal and malignant development. The gene Mgat3 encoding the glycosyltransferase GnT-III is elevated in epithelial ovarian carcinomas (EOCs) and leads to the production of abnormal truncated N-linked glycan structures instead of the typical bisected forms, role for bisecting glycosylation in the control of Notch transport, overview. GnT-III expression maintains the side-population and promotes spheroid formation in ovarian cancer cells | Homo sapiens |