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Current Development of siRNA Bioconjugates: From Research to the Clinic
In this study, it was shown that the main factor determining the nature of the biodistribution of conjugates is their lipophilicity. Conjugates of siRNA with lower lipophilicity; i.e., derivatives of retinoic acid, lithocholic acid, and docosahexanoic acid with greater efficiency than cholesterol conjugates accumulated in the kidneys, bladder, and lungs of the mouse after subcutaneous injection (Biscans et al., 2018). This fact is consistent with previous data that showed that more lipophilic conjugates bind more efficiently to serum components, and thus are not excreted by the kidneys (Wolfrum et al., 2007; Osborn et al.,...
Source: Frontiers in Pharmacology - April 25, 2019 Category: Drugs & Pharmacology Source Type: research

Abstract 4360: Validation of phosphodiesterase 10A as a cancer target
Phosphodiesterase 10A (PDE10) is a cAMP and cGMP degrading PDE isozyme that is highly expressed in the brain striatum where it plays an important role in cognition and psychomotor activity. PDE10 inhibitors are being developed for the treatment of schizophrenia and Huntington's disease and are generally well tolerated, likely because of low expression levels in peripheral tissues. We recently reported high levels of PDE10 in tumors and that genetic silencing by siRNA inhibits tumor cell growth with a high degree of selectivity over normal cells (Li et al., Oncogene 2014). These observations suggest that PDE10 may have an u...
Source: Cancer Research - August 2, 2015 Category: Cancer & Oncology Authors: Lee, K., Li, N., Chen, X., Zhu, B., Yet, L., Madeira da Silva, L., Russo, S., Keeton, A. B., Boyd, M. R., Piazza, G. A. Tags: Experimental and Molecular Therapeutics Source Type: research

Abstract 1762: Phosphodiesterase 10, a novel target for colorectal cancer therapeutics
Phosphodiesterase 10 (PDE10) is a newly characterized PDE isozyme that is expressed in regions of the brain affecting cognition and psychomotor activity. Inhibitors are currently being developed for the treatment of schizophrenia and Huntington's disease, one of which, Pf-2545920 (MP-10), is in clinical trials. Although PDE10 is not expressed in most peripheral tissues, we recently found high levels in colon tumor cells compared with normal colonocytes and that genetic silencing by siRNA selectively suppressed colon tumor cell growth. These observations suggest that PDE10 may represent a novel anticancer target. Pf-2545920...
Source: Cancer Research - September 30, 2014 Category: Cancer & Oncology Authors: Lee, K. J., Li, N., Chen, X., Zhu, B., Yet, L., Piazza, G. Tags: Experimental and Molecular Therapeutics Source Type: research