SHP is a group of water soluble iron oxide nanocrystals with amphiphilic polymer coating. Their surface functional group is carboxylic acid and their zeta potential is from -30mV to -50mV. The overall thickness of the organic layers is about 4 nm. The hydrodynamic size of the nanocrystals is about 8-10 nm larger than their inorganic core size measured by the TEM.
SHP is very stable in most buffer solutions in the pH range of 3-14. However, it is not stable in MES buffer solution.
SHP can be conjugated to the protein, peptide and DNA by following our standard Conjugation Protocol. Ocean NanoTech also offers a SHP-Protein Conjugation Kit which includes all crosslinking agents and buffer solutions. If you need to perform SHP-protein conjugation, we recommend that you remove your original buffer solutions and use our Activation Buffer to disperse your protein for the conjugation. Otherwise, precipitation may occur. If it’s your first time to perform this conjugation, you may use BSA as a model protein to get familiar with the whole process.
References:
1. L. Yang, X. Peng, Y. A.Wang, X.Wang, Z. Cao, C. Ni, P. Karna, X. Zhang, W. C. Wood, X. Gao, S.Nie, H.Mao.
Receptor-Targeted Nanoparticles for In vivo Imaging of Breast Cancer. Clinical Cancer Research, 2009, 15, 4722-4732.
2. L. Yang, H. Mao, Z. Cao Y. A. Wang, X. Peng, X. Wang, H.K. Sajja, L.Wang, H.Duan, C. Ni, C. A Staley, W. C. Wood, X. Gao, S. Nie.
Molecular Imaging of Pancreatic Cancer in a Preclinical Animal Tumor Model Using Targeted Multifunctional Nanoparticles. Gastroenterlogy, 2009, 136, 1514-1525.
3. L. Yang, H. Mao, Y. A. Wang, Z. Cao, X. Peng, X. Wang, H. Duan, C. Ni, Q. Yuan, G. Adams, M. Q. Smith, W. C. Wood, X. Gao, S. Nie.
Single Chain Epidermal Growth Factor Receptor Antibody Conjugated Nanoparticles for in vivo Tumor Targeting and Imaging. Small, 2009, 5, 235-243.
4. J. Yang, J.Gunn, S. Dave, M.Zhang, Y. A Wang, X. Gao.
Ultrasensitive Detection and Molecular Imaging with Magnetic Nanoparticles. The Analysis, 2008, 133, 154–160.
5. H. Duan, M. Kuang, X. Wang, Y. A. Wang, S. Nie, H Mao.
Reexamining the effects of particle size and surface chemistry on magnetic properties of iron oxide nanocrystals: new insights into spin disorder and proton relaxivity. The Journal of Physical Chemistry C, 2008, 112, 8127–8131.
6. X. Peng, X Qian, H Mao, YA Wang, Z Chen, S Nie, DM Shin.
Targeted magnetic iron oxide nanoparticles for tumor imaging and therapy. International Journal of Nanomedicine, 2008, 3, 311-321.
7. L. Yang, Z. Cao, H. K. Sajja, H. Mao, L. Wang, H. Geng, H. Xu, T. Jiang, W. C. Wood, S. Nie, Y. A. Wang.
Development of Receptor Targeted Magnetic Iron Oxide Nanoparticles for Efficient Drug Delivery and Tumor Imaging. Journal of Biomedical Nanotechnology, 2008, 4, 439-449.
