NanoStilbene

a nanoparticle formulation of pterostilbene

NanoStilbene PK Study

NanoStilbene Administration Results in Superior Pharmacokinetic Profi­le Compared to Pterostilbene Administration

NanoStilbene Clinical Trial in Cancer

These results suggest that NanoStilbene may be a useful adjuvant to immunotherapy of cancer rescuing T cell and NK cell activities.

Pterostilbene Literature Review

Cancer and Pterostilbene Comprehensive Literature Review

Paper of Interest

J Agric Food Chem.2002 Jun 5;50(12):3453-7.
Cancer chemopreventive and antioxidant activities of pterostilbene, a naturally occurring analogue of resveratrol.
Rimando AM1, Cuendet M, Desmarchelier C, Mehta RG, Pezzuto JM, Duke SO.

Abstract
Pterostilbene, a natural methoxylated analogue of resveratrol, was evaluated for antioxidative potential. The peroxyl-radical scavenging activity of pterostilbene was the same as that of resveratrol, having total reactive antioxidant potentials of 237 +/- 58 and 253 +/- 53 microM, respectively. Both compounds were found to be more effective than Trolox as free radical scavengers. Using a plant system, pterostilbene also was shown to be as effective as resveratrol in inhibiting electrolyte leakage caused by herbicide-induced oxidative damage, and both compounds had the same activity as alpha-tocopherol. Pterostilbene showed moderate inhibition (IC50 = 19.8 microM) of cyclooxygenase (COX)-1, and was weakly active (IC50 = 83.9 microM) against COX-2, whereas resveratrol strongly inhibited both isoforms of the enzyme with IC50 values of approximately 1 microM. Using a mouse mammary organ culture model, carcinogen-induced preneoplastic lesions were, similarly to resveratrol, significantly inhibited by pterostilbene (ED50 = 4.8 microM), suggesting antioxidant activity plays an important role in this process.

PMID: 12033810

Osteosarcoma

 

Toxicology.2013 Feb 8;304:120-31. doi: 10.1016/j.tox.2012.12.018. Epub 2013 Jan 8.

Pterostilbene exerts antitumor activity against human osteosarcoma cells by inhibiting the JAK2/STAT3 signaling pathway.

Liu Y1, Wang L, Wu Y, Lv C, Li X, Cao X, Yang M, Feng D, Luo Z.

Author information

Abstract

Osteosarcoma is a high-grade malignant bone tumor. Pterostilbene (PTE) is a natural, dimethylated analog of resveratrol with higher bioavailability. While PTE has been shown to have potent antitumor activity against various types of cancer, the molecular mechanisms underlying the effects of PTE remain largely unknown. The Janus kinase 2/Signal Transducer and Activator of Transcription 3 (JAK2/STAT3) signaling pathway plays a crucial role in tumorigenesis and immune development. In this study, we assessed the antitumor activity of PTE against human osteosarcoma cells and explored the role of JAK2/STAT3 and apoptosis-related signaling pathways on the activity of PTE. PTE treatment resulted in a dose- and time-dependent inhibition of osteosarcoma cell viability. Additionally, PTE exhibited strong antitumor activity, as evidenced not only by reductions in tumor cell adhesion, migration and mitochondrial membrane potential (MMP) but also by increases in the apoptotic index, reactive oxygen species (ROS) and several biochemical parameters. Furthermore, PTE treatment directly inhibited the phosphorylation of JAK2 at Tyr 1007 and the downstream activation of STAT3. PTE also down-regulated the expression of STAT3 target genes, including the anti-apoptotic proteins Bcl-xL and Mcl-1, leading to the up-regulation of mitochondrial apoptosis pathway-related proteins (Bax, Bak, cytosolic Cytochrome c, and cleaved Caspase3) and cyclin-dependent kinase inhibitors such as p21 and p27. PTE, used in combination with a known JAK2/STAT3 inhibitor, AG490, further decreased the viability of osteosarcoma cells. Taken together, PTE is a potent inhibitor of osteosarcoma cell growth that targets the JAK2/STAT3 signaling pathway. These data suggest that inhibition of JAK2/STAT3 signaling is a novel mechanism of action for PTE during therapeutic intervention in osteosarcoma cancers.

Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

PMID: 23313376

Frequently Asked Questions

Learn More About It!

What is Pterostilbene?

Pterostilbene is a natural dietary compound found in blueberries. We use the syntheic version due to limited amounts occuring naturally in the berries.

how much nanostilbene should i take daily?

We recommend up to 300mg daily which is approx 1.5 milliliters. However many find that 200mg daily is also suffice, therefore a range of 200-300mg daily is recommended.

can it be applied topically?

Yes small amounts may be applied locally but remember at 200mg per ml it is highly concentrated with a single drop containing 10mg.

What is nanostilbene?

NanoStilbene  is an easily absorbed nanoemulsion of nanoparticle pterostilbene in the range of 75-100nm at a concentration of 200 milligrams per milliliter

what is the concentration of nanostilbene?

NanoStilbene contains 200mg per ml or approximately 10mg per drop.

where can i obtain nanostilbene?

NanoStilbene can be obtained at our e-commerce site.