|
Category:natural substances and extractives
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Physical Properties:
| Assay: | 95.00 to 100.00
|
| Food Chemicals Codex Listed: | No |
| Boiling Point: | 843.60 °C. @ 760.00 mm Hg (est)
|
| Flash Point: | 536.00 °F. TCC ( 280.20 °C. ) (est)
|
| logP (o/w): | 5.240 (est) |
| Soluble in: |
| | water, 0.002419 mg/L @ 25 °C (est) |
Organoleptic Properties:
| Odor and/or flavor descriptions from others (if found). |
Cosmetic Information:
Suppliers:
| Alfa Biotechnology |
| For experimental / research use only. |
| Isoginkgetin 98%
|
| BOC Sciences |
| For experimental / research use only. |
| Isoginkgetin 0.975
Odor: characteristic Use: Isoginkgetin isolated from the leaves of Ginkgo biloba L.
anti-tumor activity |
| Coompo |
| For experimental / research use only. |
| isoGinkgetin from Plants ≥98%
Odor: characteristic Use: Matrix metalloproteinase (MMP)-9 plays a key role in tumor invasion. Inhibitors of MMP-9 were screened from Metasequoia glyptostroboides (Dawn redwood) and one potent inhibitor, isoginkgetin, a biflavonoid, was identified. Noncytotoxic levels of isoginkgetin decreased MMP-9 production profoundly, but up-regulated the level of tissue inhibitor of metalloproteinase (TIMP)-1, an inhibitor of MMP-9, in HT1080 human fibrosarcoma cells. The major mechanism of Ras-dependent MMP-9 production in HT1080 cells was phosphatidylinositol 3-kinase (PI3K)/Akt/nuclear factor-kappaB (NF-kappaB) activation. Expression of dominant-active H-Ras and p85 (a subunit of PI3K) increased MMP-9 activity, whereas dominant-negative forms of these molecules decreased the level of MMP-9. H-Ras did not increase MMP-9 in the presence of a PI3K inhibitor, LY294002, and a NF-kappaB inhibitor, SN50. Further studies showed that isoginkgetin regulated MMP-9 production via PI3K/Akt/NF-kappaB pathway, as evidenced by the findings that isoginkgetin inhibited activities of both Akt and NF-kappaB. PI3K/Akt is a well-known key pathway for cell invasion, and isoginkgetin inhibited HT1080 tumor cell invasion substantially. Isoginkgetin was also quite effective in inhibiting the activities of Akt and MMP-9 in MDA-MB-231 breast carcinomas and B16F10 melanoma. Moreover, isoginkgetin treatment resulted in marked decrease in invasion of these cells. In summary, PI3K/Akt is a major pathway for MMP-9 expression and isoginkgetin markedly decreased MMP-9 expression and invasion through inhibition of this pathway. This suggests that isoginkgetin could be a potential candidate as a therapeutic agent against tumor invasion.
Isoginkgetin inhibits splicing both in vivo and in vitro at similar micromolar concentrations. It appears to do so by preventing stable recruitment of the U4/U5/U6 tri-small nuclear ribonucleoprotein, resulting in accumulation of the prespliceosomal A complex. Like two other recently reported general pre-mRNA splicing inhibitors, isoginkgetin has been previously described as an anti-tumor agent. Our results suggest that splicing inhibition is the mechanistic basis of the anti-tumor activity of isoginkgetin. Thus, pre-mRNA splicing inhibitors may represent a novel avenue for development of new anti-cancer agents. |
Safety Information:
| |
| Hazards identification |
| |
| Classification of the substance or mixture |
| GHS Classification in accordance with 29 CFR 1910 (OSHA HCS) |
| None found. |
| GHS Label elements, including precautionary statements |
| |
| Pictogram | |
| |
| Hazard statement(s) |
| None found. |
| Precautionary statement(s) |
| None found. |
| Oral/Parenteral Toxicity: |
|
Not determined
|
| Dermal Toxicity: |
|
Not determined
|
| Inhalation Toxicity: |
|
Not determined
|
Safety in Use Information:
| Category: | | natural substances and extractives |
| Recommendation for isoginkgetin usage levels up to: | | | not for fragrance use.
|
| |
| Recommendation for isoginkgetin flavor usage levels up to: |
| | not for flavor use.
|
Safety References:
| EPI System: View |
| AIDS Citations:Search |
| Cancer Citations:Search |
| Toxicology Citations:Search |
| EPA ACToR:Toxicology Data |
| EPA Substance Registry Services (SRS):Registry |
| Laboratory Chemical Safety Summary :5318569 |
| National Institute of Allergy and Infectious Diseases:Data |
| 8-[5-(5,7-dihydroxy-4-oxochromen-2-yl)-2-methoxyphenyl]-5,7-dihydroxy-2-(4-methoxyphenyl)chromen-4-one |
| Chemidplus:0000548196 |
References:
| | 8-[5-(5,7-dihydroxy-4-oxochromen-2-yl)-2-methoxyphenyl]-5,7-dihydroxy-2-(4-methoxyphenyl)chromen-4-one |
| NIST Chemistry WebBook: | Search Inchi |
| Pubchem (cid): | 5318569 |
| Pubchem (sid): | 135229393 |
Other Information:
Potential Blenders and core components note
Potential Uses:
Occurrence (nature, food, other): note
Synonyms:
| 4H-1- | benzopyran-4-one, 8-[5-(5,7-dihydroxy-4-oxo-4H-1-benzopyran-2-yl)-2-methoxyphenyl]-5,7-dihydroxy-2-(4-methoxyphenyl)- | | 3''',8- | biflavone, 5,5'',7,7''-tetrahydroxy-4',4'''-dimethoxy- | | 8-[5-(5,7- | dihydroxy-4-oxo-4H-chromen-2-yl)-2-methoxyphenyl]-5,7-dihydroxy-2-(4-methoxyphenyl)-4H-chromen-4-one | | 8-[5-(5,7- | dihydroxy-4-oxochromen-2-yl)-2-methoxyphenyl]-5,7-dihydroxy-2-(4-methoxyphenyl)chromen-4-one | | 4',4'''- | dimethylamentoflavone | | 5,5'',7,7''- | tetrahydroxy-4',4'''-dimethoxy-3''',8-biflavone |
Articles:
|
3D/inchi