OPG (Osteoprotegerin), also known as OCIF (osteoclastogenesis inhibitory factor), is a secreted 55 - 60 kDa protein of the TNF-receptor superfamily (TNFRSF11B).  Mature OPG is a 380 amino acid soluble protein consisting of 4 TNFR cysteine-rich repeats, 2 death domains (DD) and 1 heparin-binding region. The cysteine-rich repeats are essential for ligand interaction, while a cysteine at the C-terminus mediates homodimerization.  OPG is widely expressed and constitutively released by mesenchymal stem cells, fibroblasts and endothelial cells. OPG is an osteoblast-secreted decoy receptor that functions as a negative regulator of bone resorption. OPG specifically binds to its ligand, OPG ligand or RANKL (receptor activator of NF-κB ligand), both of which are key extracellular regulators of osteoclast development. OPG and RANKL may also play a role in lymph-node organogenesis and vascular calcification. OPG regulates bone density through inhibiting the activation of osteoclasts and promoting osteoclast apoptosis.  Bone homeostasis may depend on the local RANKL to OPG ratio. OPG also act as a decoy receptor for TRAIL (TNF-related apoptosis-inducing ligand). TRAIL binding blocks the inhibition of osteoclastogenesis. In addition TRAIL decreases the release of OPG from cells that express it, while OPG inhibits TRAIL-induced apoptosis. Binding of OPG by syndecan-1 heparin sulfates on multiple myeloma cells also results in OPG internalization and degradation, contributing to bone loss. OPG deficiency can cause juvenile Paget’s disease (JPD) in humans, and insufficient OPG can produce osteoporosis and vascular calcification in animals and humans.

OPG (Osteoprotegerin), also known as OCIF (osteoclastogenesis inhibitory factor), is a secreted 55 - 60 kDa protein of the TNF-receptor superfamily (TNFRSF11B).  Mature OPG is a 380 amino acid soluble protein consisting of 4 TNFR cysteine-rich repeats, 2 death domains (DD) and 1 heparin-binding region. The cysteine-rich repeats are essential for ligand interaction, while a cysteine at the C-terminus mediates homodimerization.  OPG is widely expressed and constitutively released by mesenchymal stem cells, fibroblasts and endothelial cells. OPG is an osteoblast-secreted decoy receptor that functions as a negative regulator of bone resorption. OPG specifically binds to its ligand, OPG ligand or RANKL (receptor activator of NF-κB ligand), both of which are key extracellular regulators of osteoclast development. OPG and RANKL may also play a role in lymph-node organogenesis and vascular calcification. OPG regulates bone density through inhibiting the activation of osteoclasts and promoting osteoclast apoptosis.  Bone homeostasis may depend on the local RANKL to OPG ratio. OPG also act as a decoy receptor for TRAIL (TNF-related apoptosis-inducing ligand). TRAIL binding blocks the inhibition of osteoclastogenesis. In addition TRAIL decreases the release of OPG from cells that express it, while OPG inhibits TRAIL-induced apoptosis. Binding of OPG by syndecan-1 heparin sulfates on multiple myeloma cells also results in OPG internalization and degradation, contributing to bone loss. OPG deficiency can cause juvenile Paget’s disease (JPD) in humans, and insufficient OPG can produce osteoporosis and vascular calcification in animals and humans.

  

Product Details

 

Gene Symbol: OPG; TR1; OCIF; TNFRSF11B

  

NCBI Gene ID: 4982

 

Uniprot Entry: O00300

 

Construct Details: Full length human OPG/TNFRSF11B gene is subcloned into the Lentiviral expression vector pLTC with an upstream CMV promoter, which can be used for both transient and stable expression in mammalian cells.  It can be co-transfected with the LentiPAK DNA mix (SKU# LP-001) into HEK293 cells to produce high titer lentiviral particles.

 

Vector Type: pLTC (lentiviral expression vector containing a heterologous CMV promoter, see the vector map above)

 

Formulation: Supplied with 10 μg of endotoxin-free plasmid DNA at 200 ng/μl in sterile TE buffer (pH8.0)

 

Gene Insert Sequence:  

ATGAACAACTTGCTGTGCTGCGCGCTCGTGTTTCTGGACATCTCCATTAAGTGGACCACCCAGGAAACGTTTCCTCCAAA

GTACCTTCATTATGACGAAGAAACCTCTCATCAGCTGTTGTGTGACAAATGTCCTCCTGGTACCTACCTAAAACAACACT

GTACAGCAAAGTGGAAGACCGTGTGCGCCCCTTGCCCTGACCACTACTACACAGACAGCTGGCACACCAGTGACGAGTGT

CTATACTGCAGCCCCGTGTGCAAGGAGCTGCAGTACGTCAAGCAGGAGTGCAATCGCACCCACAACCGCGTGTGCGAATG

CAAGGAAGGGCGCTACCTTGAGATAGAGTTCTGCTTGAAACATAGGAGCTGCCCTCCTGGATTTGGAGTGGTGCAAGCTG

GAACCCCAGAGCGAAATACAGTTTGCAAAAGATGTCCAGATGGGTTCTTCTCAAATGAGACGTCATCTAAAGCACCCTGT

AGAAAACACACAAATTGCAGTGTCTTTGGTCTCCTGCTAACTCAGAAAGGAAATGCAACACACGACAACATATGTTCCGG

AAACAGTGAATCAACTCAAAAATGTGGAATAGATGTTACCCTGTGTGAGGAGGCATTCTTCAGGTTTGCTGTTCCTACAA

AGTTTACGCCTAACTGGCTTAGTGTCTTGGTAGACAATTTGCCTGGCACCAAAGTAAACGCAGAGAGTGTAGAGAGGATA

AAACGGCAACACAGCTCACAAGAACAGACTTTCCAGCTGCTGAAGTTATGGAAACATCAAAACAAAGACCAAGATATAGT

CAAGAAGATCATCCAAGATATTGACCTCTGTGAAAACAGCGTGCAGCGGCACATTGGACATGCTAACCTCACCTTCGAGC

AGCTTCGTAGCTTGATGGAAAGCTTACCGGGAAAGAAAGTGGGAGCAGAAGACATTGAAAAAACAATAAAGGCATGCAAA

CCCAGTGACCAGATCCTGAAGCTGCTCAGTTTGTGGCGAATAAAAAATGGCGACCAAGACACCTTGAAGGGCCTAATGCA

CGCACTAAAGCACTCAAAGACGTACCACTTTCCCAAAACTGTCACTCAGAGTCTAAAGAAGACCATCAGGTTCCTTCACA

GCTTCACAATGTACAAATTGTATCAGAAGTTATTTTTAGAAATGATAGGTAACCAGGTCCAATCAGTAAAAATAAGCTGC

TTATAA

  

Primers: Gene insert coding sequence can be confirmed by following primers:

(a) forward (or 5'-end) primer: 5’-CAAATGGGCGGTAGGCGTG-3’;

(b) reverse (or 3'-end) primer: 5’-CGGGAAGCAATAGCATGATA-3’

 

 

Note: The sequence may vary due to the naturally occurring variants or mutations, such as single nucleotide polymorphism, or the artifact during PCR amplification.  High fidelity PCR systems should always be used. 

 

  

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

Restriction: This product is not transferable or re-sellable.  Customer obtain no right to transfer, assign, or sublicense its use rights, or to transfer, resell, package, or otherwise distribute the product, or to use the product for the benefit of any third party or for any commercial purpose.  Customer may only use the product in compliance with applicable local, state and federal laws, regulations and rules.  Customer may not directly or indirectly use the product or allow the transfer, transmission, export or re-export of all or any part of the product in violation of any export control law or regulation of the united states or any other relevant jurisdiction.  Your use of this product constitutes acceptance of the terms of this limited use agreement.  Please refer to our “terms & conditions” for details.  If you are not willing to accept the limitation of this agreement, G&P Biosciences will accept return of the product for a full/partial refund.

 

Storage

 

The product is shipped at 4°C. Upon receipt, centrifuge the product briefly before opening the vial. It is recommended to store small aliquots at the temperature below –20°C for long-term storage and the product is stable for 6 months. 

 

 

 

 

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

 

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

 

References

 

 

1. Cell 89:309 (1997).

2. Proc. Natl. Acad. Sci. 95:3597 (1998). 

3. J. Biol. Chem. 273:5117 (1998). 

4. N. Engl. J. Med. 347:175 (2002). 

5. Bone 39:706 (2006). 

6. J. Atherosclerosis 204:321 (2009).

 

 

 

Documentation

 

Product datasheet (pdf) can be downloaded here: LTP0588-PDS.pdf

 

 

 

Additional supporting documents, including COA and MSDS are available upon request.

 

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

Restriction: This product is not transferable or re-sellable.  Customer obtain no right to transfer, assign, or sublicense its use rights, or to transfer, resell, package, or otherwise distribute the product, or to use the product for the benefit of any third party or for any commercial purpose.  Customer may only use the product in compliance with applicable local, state and federal laws, regulations and rules.  Customer may not directly or indirectly use the product or allow the transfer, transmission, export or re-export of all or any part of the product in violation of any export control law or regulation of the united states or any other relevant jurisdiction.  Your use of this product constitutes acceptance of the terms of this limited use agreement.  Please refer to our “terms & conditions” for details.  If you are not willing to accept the limitation of this agreement, G&P Biosciences will accept return of the product for a full/partial refund.